/* roulang page: index */
:root {
            --color-primary: #0F1F1A;
            --color-primary-light: #1A2F28;
            --color-primary-dark: #0A1511;
            --color-charcoal: #161616;
            --color-accent: #E0A526;
            --color-accent-hover: #C9921E;
            --color-cyan: #2EC4B6;
            --color-cyan-hover: #28A99E;
            --color-bg: #F4F1EA;
            --color-card: #E8EAE6;
            --color-card-alt: #FFFFFF;
            --color-text-primary: #1A1A1A;
            --color-text-secondary: #5A5A5A;
            --color-text-muted: #8A8A8A;
            --color-border: #E0E0E0;
            --color-border-light: #EBEBEB;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --spacing-xs: 8px;
            --spacing-sm: 12px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.4s ease;
            --container-max: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.7;
            font-weight: 400;
            color: var(--color-text-primary);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
            text-decoration-color: var(--color-accent);
            text-underline-offset: 3px;
        }

        a:focus {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
            border-radius: 2px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }

        button:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        button:active {
            transform: scale(0.98);
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--spacing-lg);
            padding-right: var(--spacing-lg);
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* Header / Magazine Masthead Navigation */
        .site-header {
            background-color: var(--color-primary);
            border-bottom: 3px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .masthead {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: var(--spacing-md);
            padding-bottom: var(--spacing-md);
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .masthead-brand {
            flex-shrink: 0;
        }

        .masthead-brand a {
            font-size: 36px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 4px;
            text-decoration: none;
            line-height: 1.2;
            display: block;
            transition: color var(--transition-fast);
        }

        .masthead-brand a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }

        .masthead-brand .brand-sub {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 2px;
            text-transform: uppercase;
            display: block;
            margin-top: 2px;
        }

        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 0;
            flex-shrink: 1;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 2px 0;
        }

        .masthead-nav::-webkit-scrollbar {
            display: none;
        }

        .masthead-nav-item {
            display: flex;
            align-items: center;
            white-space: nowrap;
        }

        .masthead-nav-item:not(:first-child) {
            border-left: 1px solid rgba(255, 255, 255, 0.25);
            margin-left: 0;
        }

        .masthead-nav-item a {
            display: inline-block;
            padding: 6px var(--spacing-md);
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            letter-spacing: 1px;
            border-radius: var(--radius-sm);
        }

        .masthead-nav-item a:hover {
            color: var(--color-accent);
            background-color: rgba(255, 255, 255, 0.05);
            text-decoration: none;
        }

        .masthead-nav-item a.active {
            color: var(--color-accent);
            font-weight: 700;
            background-color: rgba(224, 165, 38, 0.12);
        }

        .masthead-nav-item a:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: -2px;
        }

        .masthead-info-bar {
            background-color: var(--color-primary-dark);
            padding: 4px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .masthead-info-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 1px;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
        }

        .masthead-info-inner .date-text {
            color: rgba(255, 255, 255, 0.7);
        }

        .masthead-info-inner .period-text {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: background-color var(--transition-fast);
        }

        .nav-toggle:hover {
            background-color: rgba(255, 255, 255, 0.15);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Hero Section - Resource Download Style with Centered Search */
        .hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            padding: var(--spacing-4xl) 0;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 31, 26, 0.85) 0%, rgba(15, 31, 26, 0.72) 40%, rgba(15, 31, 26, 0.58) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .hero-content {
            max-width: 720px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background-color: rgba(224, 165, 38, 0.18);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid rgba(224, 165, 38, 0.35);
            letter-spacing: 2px;
            margin-bottom: var(--spacing-lg);
            text-transform: uppercase;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.25;
            letter-spacing: 2px;
            margin-bottom: var(--spacing-md);
        }

        .hero h1 .accent-text {
            color: var(--color-accent);
        }

        .hero-description {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
            max-width: 580px;
            margin: 0 auto var(--spacing-xl);
            letter-spacing: 0.5px;
        }

        .hero-search-wrapper {
            max-width: 560px;
            margin: 0 auto var(--spacing-xl);
            position: relative;
        }

        .hero-search {
            display: flex;
            align-items: center;
            background-color: #FFFFFF;
            border-radius: 30px;
            padding: 6px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            border: 2px solid transparent;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .hero-search:focus-within {
            border-color: var(--color-accent);
            box-shadow: 0 8px 40px rgba(224, 165, 38, 0.3);
        }

        .hero-search-icon {
            padding: 0 var(--spacing-md);
            color: var(--color-text-muted);
            font-size: 18px;
            flex-shrink: 0;
        }

        .hero-search input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 8px;
            font-size: 15px;
            color: var(--color-text-primary);
            outline: none;
            min-width: 0;
        }

        .hero-search input::placeholder {
            color: var(--color-text-muted);
        }

        .hero-search-btn {
            background-color: var(--color-accent);
            color: #FFFFFF;
            padding: 10px 22px;
            border-radius: 25px;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 1px;
            white-space: nowrap;
            transition: background-color var(--transition-fast), transform var(--transition-fast);
        }

        .hero-search-btn:hover {
            background-color: var(--color-accent-hover);
            transform: translateY(-1px);
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-lg);
        }

        .hero-tags-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            align-self: center;
            letter-spacing: 1px;
        }

        .hero-tag {
            display: inline-block;
            background-color: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            text-decoration: none;
            transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
        }

        .hero-tag:hover {
            background-color: rgba(224, 165, 38, 0.2);
            border-color: var(--color-accent);
            color: var(--color-accent);
            text-decoration: none;
        }

        .hero-data-points {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-xl);
        }

        .hero-data-point {
            text-align: center;
            padding: var(--spacing-sm) var(--spacing-md);
        }

        .hero-data-point .data-value {
            font-size: 26px;
            font-weight: 800;
            color: var(--color-accent);
            display: block;
            line-height: 1.3;
        }

        .hero-data-point .data-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.65);
            letter-spacing: 1px;
        }

        /* Section base */
        .section {
            padding: var(--spacing-4xl) 0;
        }

        .section-header {
            margin-bottom: var(--spacing-2xl);
        }

        .section-header .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 3px;
            text-transform: uppercase;
            margin-bottom: var(--spacing-sm);
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.3;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 1px;
        }

        .section-header .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 640px;
        }

        /* Metrics Dashboard */
        .metrics-section {
            background-color: var(--color-card-alt);
            border-bottom: 1px solid var(--color-border-light);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }

        .metric-card {
            background-color: var(--color-card);
            border: 1px solid #DDDDDD;
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            text-align: left;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .metric-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .metric-card-label {
            font-size: 12px;
            font-weight: 700;
            color: var(--color-text-muted);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: var(--spacing-sm);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .metric-card-label .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--color-accent);
            display: inline-block;
        }

        .metric-card-value {
            font-size: 40px;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.2;
            margin-bottom: var(--spacing-xs);
            letter-spacing: 1px;
        }

        .metric-card-footer {
            font-size: 13px;
            color: var(--color-text-muted);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-xs);
        }

        .metric-card-footer .trend-up {
            color: var(--color-cyan);
            font-weight: 600;
        }

        .metric-card-footer .trend-steady {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Services Matrix */
        .services-section {
            background-color: var(--color-bg);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .service-card {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .service-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
        }

        .service-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: rgba(224, 165, 38, 0.12);
            color: var(--color-accent);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        .service-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.35;
        }

        .service-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex-grow: 1;
        }

        .service-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-fast);
        }

        .service-card-link:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
        }

        /* Deep Content Areas */
        .deep-content-section {
            background-color: var(--color-card-alt);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }

        .deep-content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .deep-content-text h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.35;
            margin-bottom: var(--spacing-md);
        }

        .deep-content-text .paragraph-block {
            margin-bottom: var(--spacing-md);
        }

        .deep-content-text .paragraph-block p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: var(--spacing-sm);
            text-align: justify;
        }

        .deep-content-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            background-color: var(--color-card);
        }

        .deep-content-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .deep-content-image:hover img {
            transform: scale(1.03);
        }

        /* Comparison Section */
        .comparison-section {
            background-color: var(--color-bg);
        }

        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
        }

        .comparison-card {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition-fast);
        }

        .comparison-card:hover {
            border-color: var(--color-accent);
        }

        .comparison-card .comparison-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: var(--spacing-md);
            padding-bottom: var(--spacing-sm);
            border-bottom: 2px solid var(--color-border-light);
        }

        .comparison-card .comparison-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
        }

        .comparison-card .comparison-badge {
            font-size: 12px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            background-color: rgba(46, 196, 182, 0.15);
            color: var(--color-cyan);
            letter-spacing: 1px;
        }

        .comparison-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--color-border-light);
            font-size: 14px;
        }

        .comparison-row:last-child {
            border-bottom: none;
        }

        .comparison-row .row-label {
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        .comparison-row .row-value {
            font-weight: 700;
            color: var(--color-text-primary);
            font-size: 16px;
        }

        .comparison-row .row-value.highlight {
            color: var(--color-accent);
            font-size: 18px;
        }

        .comparison-chart-placeholder {
            margin-top: var(--spacing-lg);
            background-color: var(--color-card);
            border: 1px dashed var(--color-border);
            border-radius: var(--radius-md);
            min-height: 140px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-muted);
            font-size: 13px;
            letter-spacing: 1px;
            padding: var(--spacing-md);
            text-align: center;
        }

        /* About Section */
        .about-section {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .about-text h2 {
            font-size: 28px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: var(--spacing-md);
            line-height: 1.35;
        }

        .about-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.85;
            margin-bottom: var(--spacing-sm);
            text-align: justify;
        }

        .about-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* News Section */
        .news-section {
            background-color: var(--color-card-alt);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .news-item {
            display: flex;
            gap: var(--spacing-lg);
            padding: var(--spacing-lg);
            background-color: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            align-items: flex-start;
        }

        .news-item:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-md);
        }

        .news-date {
            flex-shrink: 0;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-accent);
            min-width: 80px;
            padding-top: 2px;
            letter-spacing: 1px;
            border-right: 2px solid var(--color-border);
            padding-right: var(--spacing-md);
        }

        .news-body {
            flex: 1;
        }

        .news-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: var(--spacing-xs);
            line-height: 1.4;
        }

        .news-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-sm);
        }

        .news-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-fast);
        }

        .news-more:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
        }

        /* Changelog Section */
        .changelog-section {
            background-color: var(--color-bg);
        }

        .changelog-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .changelog-item {
            display: flex;
            gap: var(--spacing-md);
            padding: var(--spacing-md) var(--spacing-lg);
            background-color: var(--color-card-alt);
            border-left: 3px solid var(--color-accent);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        .changelog-version {
            font-weight: 700;
            color: var(--color-primary);
            flex-shrink: 0;
            min-width: 60px;
            letter-spacing: 1px;
        }

        /* Guarantee Icons Strip */
        .guarantee-section {
            background-color: var(--color-card-alt);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
            padding: var(--spacing-2xl) 0;
        }

        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            text-align: center;
        }

        .guarantee-item {
            padding: var(--spacing-md);
        }

        .guarantee-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: rgba(224, 165, 38, 0.12);
            color: var(--color-accent);
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            border: 1px solid rgba(224, 165, 38, 0.3);
        }

        .guarantee-item h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
        }

        .guarantee-item p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* Categories Section */
        .categories-section {
            background-color: var(--color-bg);
        }

        .categories-grid {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .category-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: 25px;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-primary);
            text-decoration: none;
            transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
        }

        .category-chip:hover {
            background-color: var(--color-accent);
            border-color: var(--color-accent);
            color: #FFFFFF;
            text-decoration: none;
        }

        .category-chip .chip-num {
            font-size: 11px;
            font-weight: 700;
            color: var(--color-text-muted);
            background-color: rgba(0, 0, 0, 0.05);
            border-radius: 10px;
            padding: 1px 7px;
        }

        .category-chip:hover .chip-num {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.2);
        }

        /* FAQ Section */
        .faq-section {
            background-color: var(--color-card-alt);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background-color: #FFFFFF;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-accent);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding: var(--spacing-md) var(--spacing-lg);
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-primary);
            list-style: none;
            user-select: none;
            transition: background-color var(--transition-fast);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            background-color: var(--color-card);
        }

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-accent);
            transition: transform var(--transition-fast);
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            padding: 0 var(--spacing-lg) var(--spacing-md);
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* CTA Form Section */
        .cta-form-section {
            background-color: var(--color-bg);
        }

        .cta-form-wrapper {
            max-width: 700px;
            margin: 0 auto;
            background-color: var(--color-card-alt);
            border: 2px solid var(--color-accent);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl);
            box-shadow: var(--shadow-md);
        }

        .cta-form-wrapper h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--color-primary);
            text-align: center;
            margin-bottom: var(--spacing-sm);
        }

        .cta-form-wrapper .cta-form-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            text-align: center;
            margin-bottom: var(--spacing-xl);
            line-height: 1.7;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .form-row {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .form-row label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-primary);
            letter-spacing: 1px;
        }

        .form-row input,
        .form-row select,
        .form-row textarea {
            padding: 12px var(--spacing-md);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--color-text-primary);
            background-color: #FFFFFF;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            outline: none;
        }

        .form-row input:focus,
        .form-row select:focus,
        .form-row textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(224, 165, 38, 0.15);
        }

        .form-row textarea {
            resize: vertical;
            min-height: 80px;
        }

        .form-submit-btn {
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            letter-spacing: 2px;
            transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            align-self: center;
            min-width: 180px;
        }

        .form-submit-btn:hover {
            background-color: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .form-submit-btn:active {
            transform: scale(0.98);
        }

        .form-privacy-note {
            font-size: 12px;
            color: var(--color-text-muted);
            text-align: center;
            margin-top: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        /* Scene Demo Section */
        .scene-demo-section {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }

        .scene-demo-section .section-header h2 {
            color: #FFFFFF;
        }

        .scene-demo-section .section-header .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        .scene-demo-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .scene-demo-card {
            background-color: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl);
            transition: background-color var(--transition-fast), border-color var(--transition-fast);
        }

        .scene-demo-card:hover {
            background-color: rgba(255, 255, 255, 0.12);
            border-color: var(--color-accent);
        }

        .scene-demo-card .scene-step {
            font-size: 12px;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 2px;
            margin-bottom: var(--spacing-sm);
        }

        .scene-demo-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: var(--spacing-xs);
            line-height: 1.4;
        }

        .scene-demo-card p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: var(--spacing-3xl) 0 var(--spacing-lg);
            border-top: 3px solid var(--color-accent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-2xl);
        }

        .footer-brand .footer-logo {
            font-size: 28px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 3px;
            margin-bottom: var(--spacing-sm);
            display: block;
            text-decoration: none;
        }

        .footer-brand .footer-logo:hover {
            color: var(--color-accent);
            text-decoration: none;
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: var(--spacing-md);
            letter-spacing: 1px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .footer-col ul a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-lg);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }

        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            align-items: center;
        }

        .footer-beian a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 12px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .deep-content-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .deep-content-image {
                order: -1;
                max-height: 320px;
            }

            .about-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .about-image {
                max-height: 300px;
                order: -1;
            }

            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .scene-demo-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .masthead {
                flex-wrap: nowrap;
            }

            .masthead-brand a {
                font-size: 26px;
                letter-spacing: 2px;
            }

            .masthead-brand .brand-sub {
                font-size: 10px;
                letter-spacing: 1px;
            }

            .masthead-nav {
                flex-shrink: 1;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                gap: 0;
                max-width: calc(100vw - 200px);
            }

            .masthead-nav-item a {
                font-size: 13px;
                padding: 5px 10px;
                letter-spacing: 0.5px;
            }

            .hero {
                min-height: 420px;
                padding: var(--spacing-2xl) 0;
            }

            .hero h1 {
                font-size: 30px;
                letter-spacing: 1px;
            }

            .hero-description {
                font-size: 15px;
                margin-bottom: var(--spacing-lg);
            }

            .hero-search {
                flex-wrap: wrap;
                border-radius: 16px;
                padding: 4px;
            }

            .hero-search input {
                padding: 8px 12px;
                font-size: 14px;
                min-width: 0;
                flex: 1 1 100%;
                border-radius: 12px 12px 0 0;
                text-align: center;
            }

            .hero-search-btn {
                flex: 1 1 100%;
                border-radius: 0 0 12px 12px;
                padding: 10px;
                font-size: 14px;
                text-align: center;
            }

            .hero-tags {
                gap: 6px;
            }

            .hero-tag {
                font-size: 12px;
                padding: 4px 10px;
            }

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }

            .metric-card {
                padding: var(--spacing-md);
            }

            .metric-card-value {
                font-size: 28px;
            }

            .services-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .comparison-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .news-item {
                flex-direction: column;
                gap: var(--spacing-sm);
                padding: var(--spacing-md);
            }

            .news-date {
                border-right: none;
                border-bottom: 1px solid var(--color-border);
                padding-right: 0;
                padding-bottom: var(--spacing-xs);
                min-width: auto;
            }

            .guarantee-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }

            .scene-demo-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .cta-form-wrapper {
                padding: var(--spacing-lg);
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
                text-align: left;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: var(--spacing-xs);
            }

            .footer-beian {
                justify-content: center;
            }

            .section {
                padding: var(--spacing-3xl) 0;
            }

            .section-header h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }

            .hero h1 {
                font-size: 24px;
            }

            .hero-description {
                font-size: 14px;
            }

            .hero-data-points {
                gap: var(--spacing-sm);
                flex-direction: column;
                align-items: center;
            }

            .hero-data-point .data-value {
                font-size: 20px;
            }

            .guarantee-grid {
                grid-template-columns: 1fr;
            }

            .form-submit-btn {
                width: 100%;
                min-width: auto;
            }

            .masthead-brand a {
                font-size: 22px;
            }

            .masthead-info-inner {
                flex-direction: column;
                gap: 2px;
                font-size: 11px;
                text-align: center;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0F1F1A;
            --color-primary-light: #1A2F28;
            --color-primary-dark: #0A1511;
            --color-charcoal: #161616;
            --color-accent: #E0A526;
            --color-accent-hover: #C9921E;
            --color-cyan: #2EC4B6;
            --color-cyan-hover: #28A99E;
            --color-bg: #F4F1EA;
            --color-card: #E8EAE6;
            --color-card-alt: #FFFFFF;
            --color-text-primary: #1A1A1A;
            --color-text-secondary: #5A5A5A;
            --color-text-muted: #8A8A8A;
            --color-border: #E0E0E0;
            --color-border-light: #EBEBEB;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --spacing-xs: 8px;
            --spacing-sm: 12px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.4s ease;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
            box-sizing: border-box;
        }
        *,
        *::before,
        *::after {
            box-sizing: inherit;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.7;
            font-weight: 400;
            color: var(--color-text-primary);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
            border-radius: var(--radius-md);
        }
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
            text-decoration-color: var(--color-accent);
            text-underline-offset: 3px;
        }
        a:focus {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
            border-radius: 2px;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        button:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        button:active {
            transform: scale(0.98);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--spacing-lg);
            padding-right: var(--spacing-lg);
        }
        /* Header / Magazine Masthead Navigation */
        .site-header {
            background-color: var(--color-primary);
            border-bottom: 3px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .masthead {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            padding-top: var(--spacing-sm);
            padding-bottom: var(--spacing-sm);
            flex-wrap: wrap;
        }
        .masthead-brand {
            flex-shrink: 0;
        }
        .masthead-brand a {
            font-size: 36px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 4px;
            text-decoration: none;
            line-height: 1.2;
            display: block;
            transition: color var(--transition-fast);
        }
        .masthead-brand a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .masthead-brand .brand-sub {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 2px;
            text-transform: uppercase;
            display: block;
            margin-top: 2px;
        }
        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 0;
            flex-shrink: 1;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 2px 0;
        }
        .masthead-nav::-webkit-scrollbar {
            display: none;
        }
        .masthead-nav-item {
            display: flex;
            align-items: center;
            white-space: nowrap;
        }
        .masthead-nav-item:not(:first-child) {
            border-left: 1px solid rgba(255, 255, 255, 0.25);
            margin-left: 0;
        }
        .masthead-nav-item a {
            display: inline-block;
            padding: 6px var(--spacing-md);
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            letter-spacing: 1px;
            border-radius: var(--radius-sm);
        }
        .masthead-nav-item a:hover {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.08);
            text-decoration: none;
        }
        .masthead-nav-item a.active {
            color: var(--color-accent);
            background-color: rgba(224, 165, 38, 0.12);
            font-weight: 700;
        }
        .masthead-info-bar {
            background-color: var(--color-primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .masthead-info-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-md);
            padding-top: 6px;
            padding-bottom: 6px;
            flex-wrap: wrap;
        }
        .date-text,
        .period-text {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 0.5px;
        }
        /* Section base */
        section {
            padding: var(--spacing-3xl) 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            font-size: 13px;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: var(--spacing-sm);
        }
        .section-label::before {
            content: '';
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: var(--color-accent);
            border-radius: 50%;
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.3;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
        }
        .section-title .highlight {
            color: var(--color-accent);
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 760px;
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
        }
        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-xs);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.5px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--color-accent);
            color: #0F1F1A;
            border-color: var(--color-accent);
        }
        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            color: #0F1F1A;
            text-decoration: none;
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border-color: var(--color-border);
        }
        .btn-outline:hover {
            background-color: rgba(224, 165, 38, 0.08);
            border-color: var(--color-accent);
            color: var(--color-accent-hover);
            text-decoration: none;
        }
        .btn-ghost-light {
            background-color: transparent;
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.4);
        }
        .btn-ghost-light:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: var(--color-accent);
            color: var(--color-accent);
            text-decoration: none;
        }
        /* Hero */
        .hero {
            background-color: var(--color-primary);
            color: #FFFFFF;
            padding: var(--spacing-4xl) 0 var(--spacing-3xl);
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background: linear-gradient(135deg, rgba(224, 165, 38, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-inner {
            display: flex;
            align-items: center;
            gap: var(--spacing-2xl);
            position: relative;
            z-index: 2;
        }
        .hero-content {
            flex: 1.1;
        }
        .hero-title {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            color: #FFFFFF;
            margin-bottom: var(--spacing-lg);
            letter-spacing: 1px;
        }
        .hero-title .highlight {
            color: var(--color-accent);
        }
        .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.75;
            max-width: 620px;
            margin-bottom: var(--spacing-xl);
        }
        .hero-actions {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }
        .hero-visual {
            flex: 0.9;
            position: relative;
        }
        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .hero-visual::after {
            content: '走势观察';
            position: absolute;
            bottom: var(--spacing-md);
            left: var(--spacing-md);
            background-color: rgba(15, 31, 26, 0.85);
            color: var(--color-accent);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 2px;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            backdrop-filter: blur(4px);
        }
        /* Hero stats strip */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-2xl);
            position: relative;
            z-index: 2;
        }
        .hero-stat-card {
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: background-color var(--transition-fast), border-color var(--transition-fast);
        }
        .hero-stat-card:hover {
            background-color: rgba(255, 255, 255, 0.09);
            border-color: rgba(224, 165, 38, 0.4);
        }
        .hero-stat-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 1px;
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
        }
        .hero-stat-value {
            font-size: 38px;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.2;
            letter-spacing: 1px;
        }
        .hero-stat-note {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
            margin-top: var(--spacing-xs);
        }
        /* Content section */
        .content-section {
            background-color: var(--color-card-alt);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }
        .content-section-alt {
            background-color: var(--color-bg);
        }
        /* Trend feature cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
        }
        .feature-card {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl) var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .feature-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
        }
        .feature-card-icon {
            font-size: 32px;
            margin-bottom: var(--spacing-sm);
            display: block;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.4;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        /* Image + text arranged horizontally */
        .split-panel {
            display: flex;
            align-items: center;
            gap: var(--spacing-2xl);
            flex-wrap: wrap;
        }
        .split-panel .split-image {
            flex: 0 0 45%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .split-panel .split-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        .split-panel .split-text {
            flex: 1;
            min-width: 300px;
        }
        .split-panel .split-text h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: var(--spacing-md);
            line-height: 1.35;
        }
        .split-panel .split-text p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: var(--spacing-md);
        }
        /* Steps */
        .steps-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
        }
        .steps-list li {
            display: flex;
            gap: var(--spacing-lg);
            align-items: flex-start;
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .steps-list li:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-md);
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: var(--color-accent);
            color: #0F1F1A;
            font-size: 22px;
            font-weight: 800;
            border-radius: 50%;
        }
        .step-content h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 var(--spacing-xs);
        }
        .step-content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        /* Data comparison bars */
        .compare-bars {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl) var(--spacing-lg);
            box-shadow: var(--shadow-sm);
        }
        .compare-bar-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }
        .compare-bar-label {
            flex: 0 0 120px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
        }
        .compare-bar-track {
            flex: 1;
            min-width: 200px;
            height: 10px;
            background-color: var(--color-card);
            border-radius: 999px;
            overflow: hidden;
        }
        .compare-bar-fill {
            height: 100%;
            background-color: var(--color-cyan);
            border-radius: 999px;
            transition: width var(--transition-base);
        }
        .compare-bar-fill.warm {
            background-color: var(--color-accent);
        }
        .compare-bar-value {
            flex: 0 0 60px;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-primary);
            text-align: right;
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            max-width: 820px;
        }
        .faq-item {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-accent);
        }
        .faq-item summary {
            padding: var(--spacing-lg);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-sm);
            list-style: none;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 24px;
            color: var(--color-accent);
            font-weight: 600;
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 var(--spacing-lg) var(--spacing-lg);
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }
        /* CTA form */
        .cta-section {
            background-color: var(--color-primary);
            color: #FFFFFF;
            padding: var(--spacing-4xl) 0;
        }
        .cta-inner {
            display: flex;
            align-items: center;
            gap: var(--spacing-2xl);
            flex-wrap: wrap;
        }
        .cta-text {
            flex: 1;
            min-width: 280px;
        }
        .cta-text h2 {
            font-size: 28px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
            line-height: 1.35;
        }
        .cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.75;
            margin: 0;
        }
        .cta-form {
            flex: 1;
            min-width: 300px;
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
        }
        .cta-form .form-group {
            margin-bottom: var(--spacing-md);
        }
        .cta-form label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: var(--spacing-xs);
            letter-spacing: 0.5px;
        }
        .cta-form input,
        .cta-form select {
            width: 100%;
            padding: 10px 14px;
            font-size: 15px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.3);
            background-color: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .cta-form select option {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }
        .cta-form input:focus,
        .cta-form select:focus {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 2px rgba(224, 165, 38, 0.3);
        }
        .cta-form .btn {
            width: 100%;
            margin-top: var(--spacing-sm);
        }
        /* Deep content block */
        .deep-block {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl);
            box-shadow: var(--shadow-sm);
        }
        .deep-block h3 {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: var(--spacing-md);
            line-height: 1.4;
        }
        .deep-block p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: var(--spacing-md);
        }
        .deep-block p:last-child {
            margin-bottom: 0;
        }
        /* Data note chips */
        .chips-row {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-md);
        }
        .chip {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 500;
            border-radius: 999px;
            background-color: var(--color-card);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
        }
        .chip.hot {
            background-color: rgba(224, 165, 38, 0.1);
            color: var(--color-accent-hover);
            border-color: rgba(224, 165, 38, 0.3);
        }
        .chip.mint {
            background-color: rgba(46, 196, 182, 0.1);
            color: var(--color-cyan-hover);
            border-color: rgba(46, 196, 182, 0.3);
        }
        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-3xl) 0 var(--spacing-lg);
            border-top: 3px solid var(--color-accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-2xl);
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin-top: var(--spacing-sm);
            max-width: 320px;
        }
        .footer-brand .footer-logo {
            font-size: 28px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 3px;
            text-decoration: none;
            display: inline-block;
        }
        .footer-brand .footer-logo:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 1px;
            margin-bottom: var(--spacing-md);
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: var(--spacing-lg);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-beian {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }
        .footer-beian a {
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
        }
        .footer-beian a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-visual {
                width: 100%;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .masthead {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }
            .masthead-nav {
                width: 100%;
            }
            .container {
                padding-left: var(--spacing-md);
                padding-right: var(--spacing-md);
            }
            section {
                padding: var(--spacing-2xl) 0;
            }
            .hero {
                padding: var(--spacing-2xl) 0;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-stat-value {
                font-size: 28px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .split-panel {
                flex-direction: column;
            }
            .split-panel .split-image {
                flex: 0 0 100%;
            }
            .section-title {
                font-size: 24px;
            }
            .deep-block {
                padding: var(--spacing-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }
            .cta-inner {
                flex-direction: column;
            }
        }
        @media (max-width: 520px) {
            .masthead-brand a {
                font-size: 28px;
                letter-spacing: 2px;
            }
            .hero-title {
                font-size: 24px;
                letter-spacing: 0.5px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-stat-value {
                font-size: 24px;
            }
            .masthead-info-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 2px;
            }
            .steps-list li {
                flex-direction: column;
                gap: var(--spacing-sm);
            }
            .step-number {
                width: 36px;
                height: 36px;
                font-size: 18px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0F1F1A;
            --color-primary-light: #1A2F28;
            --color-primary-dark: #0A1511;
            --color-charcoal: #161616;
            --color-accent: #E0A526;
            --color-accent-hover: #C9921E;
            --color-cyan: #2EC4B6;
            --color-cyan-hover: #28A99E;
            --color-bg: #F4F1EA;
            --color-card: #E8EAE6;
            --color-card-alt: #FFFFFF;
            --color-text-primary: #1A1A1A;
            --color-text-secondary: #5A5A5A;
            --color-text-muted: #8A8A8A;
            --color-border: #E0E0E0;
            --color-border-light: #EBEBEB;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --spacing-xs: 8px;
            --spacing-sm: 12px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.4s ease;
            --container-max: 1200px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.7;
            font-weight: 400;
            color: var(--color-text-primary);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; border: 0; }
        a { color: var(--color-accent); text-decoration: none; transition: color var(--transition-fast); }
        a:hover { color: var(--color-accent-hover); text-decoration: underline; text-underline-offset: 3px; }
        a:focus { outline: 2px solid var(--color-cyan); outline-offset: 2px; border-radius: 2px; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; }
        button { cursor: pointer; border: none; background: none; transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast); }
        button:focus { outline: 2px solid var(--color-primary); outline-offset: 2px; }
        button:active { transform: scale(0.98); }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--color-text-primary); font-weight: 700; }
        ul, ol { list-style: none; }

        .container { max-width: var(--container-max); margin: 0 auto; padding-left: var(--spacing-lg); padding-right: var(--spacing-lg); }

        /* ===== Header / Magazine Masthead ===== */
        .site-header {
            background-color: var(--color-primary);
            border-bottom: 3px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .masthead { display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-xl); padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); flex-wrap: wrap; }
        .masthead-brand { flex-shrink: 0; }
        .masthead-brand a { font-size: 32px; font-weight: 800; color: #FFFFFF; letter-spacing: 4px; text-decoration: none; line-height: 1.2; display: block; transition: color var(--transition-fast); }
        .masthead-brand a:hover { color: var(--color-accent); text-decoration: none; }
        .masthead-brand .brand-sub { font-size: 11px; color: rgba(255, 255, 255, 0.55); letter-spacing: 2px; text-transform: uppercase; display: block; margin-top: 2px; }
        .masthead-nav { display: flex; align-items: center; gap: 0; flex-shrink: 1; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; -ms-overflow-style: none; padding: 2px 0; }
        .masthead-nav::-webkit-scrollbar { display: none; }
        .masthead-nav-item { display: flex; align-items: center; white-space: nowrap; }
        .masthead-nav-item:not(:first-child) { border-left: 1px solid rgba(255, 255, 255, 0.25); }
        .masthead-nav-item a { display: inline-block; padding: 6px var(--spacing-md); font-size: 14px; font-weight: 500; color: rgba(255, 255, 255, 0.85); text-decoration: none; transition: color var(--transition-fast), background-color var(--transition-fast); letter-spacing: 1px; border-radius: var(--radius-sm); }
        .masthead-nav-item a:hover { color: var(--color-accent); text-decoration: none; background-color: rgba(255, 255, 255, 0.06); }
        .masthead-nav-item a.active { color: #FFFFFF; background-color: rgba(224, 165, 38, 0.22); font-weight: 700; }
        .masthead-info-bar { background-color: var(--color-primary-dark); }
        .masthead-info-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--spacing-xs); padding-top: 6px; padding-bottom: 6px; font-size: 12px; color: rgba(255, 255, 255, 0.6); letter-spacing: 1px; }
        .masthead-info-inner .period-text { color: var(--color-accent); }

        /* ===== Buttons ===== */
        .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600; letter-spacing: 1px; text-decoration: none; transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast); }
        .btn-primary { background-color: var(--color-accent); color: var(--color-primary-dark); }
        .btn-primary:hover { background-color: var(--color-accent-hover); color: var(--color-primary-dark); text-decoration: none; box-shadow: var(--shadow-md); }
        .btn-outline { background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary); }
        .btn-outline:hover { background-color: rgba(224, 165, 38, 0.12); border-color: var(--color-accent); color: var(--color-primary-dark); text-decoration: none; }
        .btn-text { color: var(--color-accent); padding: 4px 0; font-weight: 600; font-size: 14px; text-decoration: none; display: inline-flex; align-items: center; gap: 4px; }
        .btn-text:hover { color: var(--color-accent-hover); text-decoration: underline; }

        /* ===== Section Base ===== */
        .section { padding: var(--spacing-3xl) 0; }
        .section-alt { background-color: var(--color-card-alt); }
        .section-deep { background-color: var(--color-primary); color: #FFFFFF; }
        .section-deep h2, .section-deep h3 { color: #FFFFFF; }
        .section-header { margin-bottom: var(--spacing-xl); max-width: 760px; }
        .section-header h2 { font-size: 28px; font-weight: 800; letter-spacing: 1px; margin-bottom: var(--spacing-sm); }
        .section-header p { color: var(--color-text-secondary); font-size: 16px; line-height: 1.7; }
        .section-deep .section-header p { color: rgba(255, 255, 255, 0.7); }
        .eyebrow { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; color: var(--color-accent); margin-bottom: var(--spacing-xs); }

        /* ===== Hero Bento ===== */
        .hero-bento { position: relative; background-color: var(--color-primary); color: #FFFFFF; padding: var(--spacing-3xl) 0 var(--spacing-2xl); overflow: hidden; }
        .hero-bento::after { content: ''; position: absolute; top: 0; right: 0; width: 40%; height: 100%; background-image: url('/assets/images/backpic/back-1.jpg'); background-size: cover; background-position: center; opacity: 0.15; pointer-events: none; }
        .hero-bento .container { position: relative; z-index: 1; }
        .hero-bento-grid { display: grid; grid-template-columns: 1fr 360px; gap: var(--spacing-2xl); align-items: center; }
        .hero-main h1 { font-size: 38px; font-weight: 800; color: #FFFFFF; letter-spacing: 2px; line-height: 1.25; margin-bottom: var(--spacing-md); }
        .hero-main .hero-sub { color: rgba(255, 255, 255, 0.75); font-size: 17px; line-height: 1.7; margin-bottom: var(--spacing-lg); max-width: 620px; }
        .hero-meta { display: flex; gap: var(--spacing-lg); flex-wrap: wrap; margin-bottom: var(--spacing-lg); }
        .hero-meta-item { background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.2); border-radius: var(--radius-md); padding: var(--spacing-sm) var(--spacing-md); }
        .hero-meta-item span { display: block; font-size: 11px; color: rgba(255, 255, 255, 0.55); letter-spacing: 1px; margin-bottom: 4px; }
        .hero-meta-item strong { font-size: 18px; color: var(--color-accent); font-weight: 700; }
        .hero-actions { display: flex; gap: var(--spacing-sm); flex-wrap: wrap; }
        .hero-side { display: flex; flex-direction: column; gap: var(--spacing-sm); }
        .hero-side-card { background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.18); border-radius: var(--radius-md); padding: var(--spacing-md); display: flex; align-items: center; gap: var(--spacing-sm); }
        .hero-side-card img { width: 56px; height: 56px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
        .hero-side-card h4 { font-size: 14px; color: #FFFFFF; font-weight: 600; margin-bottom: 4px; }
        .hero-side-card p { font-size: 12px; color: rgba(255, 255, 255, 0.6); line-height: 1.4; }

        /* ===== Metrics ===== */
        .metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); }
        .metric-card { background: var(--color-card-alt); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--spacing-lg); box-shadow: var(--shadow-sm); transition: transform var(--transition-fast), box-shadow var(--transition-fast); }
        .metric-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .metric-label { font-size: 12px; font-weight: 700; letter-spacing: 2px; color: var(--color-text-muted); text-transform: uppercase; margin-bottom: var(--spacing-xs); }
        .metric-value { font-size: 40px; font-weight: 800; color: var(--color-accent); line-height: 1.1; }
        .metric-desc { font-size: 13px; color: var(--color-text-secondary); margin-top: var(--spacing-xs); }

        /* ===== List Flow ===== */
        .list-flow { display: flex; flex-direction: column; gap: 0; }
        .list-flow-item { display: flex; gap: var(--spacing-lg); padding: var(--spacing-lg) 0; border-bottom: 1px solid var(--color-border-light); align-items: flex-start; }
        .list-flow-item:last-child { border-bottom: none; }
        .list-flow-index { flex-shrink: 0; width: 48px; height: 48px; border-radius: 50%; background-color: var(--color-primary); color: var(--color-accent); display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; }
        .list-flow-content h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
        .list-flow-content p { color: var(--color-text-secondary); font-size: 15px; line-height: 1.7; }

        /* ===== Scenario Cards ===== */
        .scenario-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-md); }
        .scenario-card { background: var(--color-card-alt); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--spacing-lg); display: flex; gap: var(--spacing-md); align-items: flex-start; box-shadow: var(--shadow-sm); transition: transform var(--transition-fast), box-shadow var(--transition-fast); }
        .scenario-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .scenario-icon { width: 40px; height: 40px; border-radius: var(--radius-sm); background-color: rgba(46, 196, 182, 0.15); display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0; }
        .scenario-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
        .scenario-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

        /* ===== Data Table ===== */
        .table-wrap { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--color-border); background: var(--color-card-alt); }
        .data-table { width: 100%; border-collapse: collapse; min-width: 700px; }
        .data-table th { background-color: var(--color-primary); color: #FFFFFF; font-weight: 600; font-size: 14px; padding: var(--spacing-md); text-align: left; letter-spacing: 1px; }
        .data-table td { padding: var(--spacing-md); border-bottom: 1px solid var(--color-border-light); font-size: 14px; color: var(--color-text-secondary); }
        .data-table tr:hover td { background-color: rgba(224, 165, 38, 0.06); }
        .data-table .highlight { color: var(--color-accent); font-weight: 700; }

        /* ===== Deep Content ===== */
        .deep-content { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-2xl); align-items: center; }
        .deep-content-text h2 { font-size: 26px; font-weight: 800; margin-bottom: var(--spacing-md); }
        .deep-content-text p { color: var(--color-text-secondary); font-size: 15px; line-height: 1.8; margin-bottom: var(--spacing-sm); }
        .deep-content-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
        .deep-content-img img { width: 100%; height: 100%; object-fit: cover; }

        /* ===== FAQ ===== */
        .faq-list { display: flex; flex-direction: column; gap: var(--spacing-sm); max-width: 800px; }
        .faq-item { background: var(--color-card-alt); border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
        .faq-item summary { padding: var(--spacing-md) var(--spacing-lg); cursor: pointer; font-weight: 700; font-size: 15px; color: var(--color-text-primary); list-style: none; display: flex; justify-content: space-between; align-items: center; transition: background-color var(--transition-fast); }
        .faq-item summary:hover { background-color: rgba(224, 165, 38, 0.06); }
        .faq-item summary::after { content: '+'; font-size: 20px; color: var(--color-accent); font-weight: 700; transition: transform var(--transition-fast); }
        .faq-item[open] summary::after { content: '−'; }
        .faq-item .faq-answer { padding: 0 var(--spacing-lg) var(--spacing-lg); color: var(--color-text-secondary); font-size: 14px; line-height: 1.7; }

        /* ===== CTA Form ===== */
        .cta-section { background-color: var(--color-primary); color: #FFFFFF; }
        .cta-section h2 { color: #FFFFFF; }
        .cta-section p { color: rgba(255, 255, 255, 0.7); }
        .cta-form-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-2xl); align-items: center; }
        .cta-form-card { background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.18); border-radius: var(--radius-lg); padding: var(--spacing-2xl); }
        .cta-form-card form { display: flex; flex-direction: column; gap: var(--spacing-md); }
        .form-group { display: flex; flex-direction: column; gap: 6px; }
        .form-group label { font-size: 12px; font-weight: 600; letter-spacing: 1px; color: rgba(255, 255, 255, 0.8); }
        .form-group input, .form-group select, .form-group textarea { background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.25); border-radius: var(--radius-sm); padding: 12px 14px; color: #FFFFFF; font-size: 14px; transition: border-color var(--transition-fast), background-color var(--transition-fast); }
        .form-group input::placeholder, .form-group textarea::placeholder { color: rgba(255, 255, 255, 0.4); }
        .form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: 2px solid var(--color-accent); outline-offset: 2px; border-color: var(--color-accent); }
        .form-group select option { color: var(--color-text-primary); }
        .cta-form-card .btn { width: 100%; }
        .cta-panel h3 { font-size: 22px; font-weight: 700; color: #FFFFFF; margin-bottom: var(--spacing-sm); }
        .cta-panel ul { display: flex; flex-direction: column; gap: var(--spacing-sm); }
        .cta-panel ul li { display: flex; align-items: flex-start; gap: var(--spacing-xs); color: rgba(255, 255, 255, 0.75); font-size: 14px; line-height: 1.6; }
        .cta-panel ul li::before { content: '●'; color: var(--color-accent); font-size: 10px; margin-top: 6px; }

        /* ===== Footer ===== */
        .site-footer { background-color: var(--color-primary-dark); color: rgba(255, 255, 255, 0.7); padding-top: var(--spacing-3xl); font-size: 14px; }
        .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--spacing-xl); padding-bottom: var(--spacing-2xl); }
        .footer-logo { font-size: 24px; font-weight: 800; color: #FFFFFF; letter-spacing: 3px; text-decoration: none; display: block; margin-bottom: var(--spacing-sm); }
        .footer-logo:hover { color: var(--color-accent); text-decoration: none; }
        .footer-brand p { font-size: 13px; color: rgba(255, 255, 255, 0.55); line-height: 1.7; max-width: 320px; }
        .footer-col h4 { font-size: 14px; font-weight: 700; color: #FFFFFF; letter-spacing: 1px; margin-bottom: var(--spacing-sm); }
        .footer-col ul { display: flex; flex-direction: column; gap: 6px; }
        .footer-col ul li a { color: rgba(255, 255, 255, 0.6); font-size: 13px; }
        .footer-col ul li a:hover { color: var(--color-accent); }
        .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.15); padding: var(--spacing-lg) 0; display: flex; flex-wrap: wrap; gap: var(--spacing-sm); align-items: center; justify-content: space-between; font-size: 12px; color: rgba(255, 255, 255, 0.5); }
        .footer-beian { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
        .footer-beian a { color: rgba(255, 255, 255, 0.5); }
        .footer-beian a:hover { color: var(--color-accent); }
        .footer-bottom a { color: rgba(255, 255, 255, 0.6); }
        .footer-bottom a:hover { color: var(--color-accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-bento-grid { grid-template-columns: 1fr; gap: var(--spacing-xl); }
            .hero-side { flex-direction: row; flex-wrap: wrap; }
            .hero-side-card { flex: 1 1 45%; }
            .metrics-grid { grid-template-columns: repeat(2, 1fr); }
            .deep-content { grid-template-columns: 1fr; gap: var(--spacing-lg); }
            .cta-form-wrap { grid-template-columns: 1fr; gap: var(--spacing-xl); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .masthead { flex-direction: column; align-items: flex-start; gap: var(--spacing-sm); }
            .masthead-nav { width: 100%; }
            .masthead-info-inner { flex-direction: column; align-items: flex-start; gap: 2px; }
            .hero-main h1 { font-size: 28px; }
            .hero-side { flex-direction: column; }
            .hero-side-card { flex: 1 1 auto; }
            .metrics-grid { grid-template-columns: 1fr 1fr; }
            .scenario-grid { grid-template-columns: 1fr; }
            .section { padding: var(--spacing-2xl) 0; }
            .section-header h2 { font-size: 22px; }
            .metric-value { font-size: 32px; }
            .list-flow-item { flex-direction: column; }
            .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-lg); }
            .footer-bottom { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 520px) {
            .masthead-brand a { font-size: 26px; }
            .hero-bento { padding-top: var(--spacing-2xl); }
            .hero-main h1 { font-size: 24px; }
            .metrics-grid { grid-template-columns: 1fr; }
            .container { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
            .btn { padding: 10px 20px; font-size: 14px; }
            .metric-value { font-size: 28px; }
            .section-header h2 { font-size: 20px; }
            .faq-item summary { font-size: 14px; padding: var(--spacing-sm) var(--spacing-md); }
            .faq-item .faq-answer { padding: 0 var(--spacing-md) var(--spacing-md); font-size: 13px; }
        }

/* roulang page: category3 */
:root {
  --color-primary: #0F1F1A;
  --color-primary-light: #1A2F28;
  --color-primary-dark: #0A1511;
  --color-charcoal: #161616;
  --color-accent: #E0A526;
  --color-accent-hover: #C9921E;
  --color-cyan: #2EC4B6;
  --color-cyan-hover: #28A99E;
  --color-bg: #F4F1EA;
  --color-card: #E8EAE6;
  --color-card-alt: #FFFFFF;
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #5A5A5A;
  --color-text-muted: #8A8A8A;
  --color-border: #E0E0E0;
  --color-border-light: #EBEBEB;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 80px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.4s ease;
  --container-max: 1200px;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}
body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  font-weight: 400;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}
a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 3px;
}
a:focus {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
  border-radius: 2px;
}
button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}
button {
  cursor: pointer;
  border: none;
  background: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
button:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
button:active {
  transform: scale(0.98);
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}
/* Header / Magazine Masthead Navigation */
.site-header {
  background-color: var(--color-primary);
  border-bottom: 3px solid var(--color-accent);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  min-height: 76px;
}
.masthead-brand {
  flex-shrink: 0;
}
.masthead-brand a {
  font-size: 36px;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: 4px;
  text-decoration: none;
  line-height: 1.2;
  display: block;
  transition: color var(--transition-fast);
}
.masthead-brand a:hover {
  color: var(--color-accent);
  text-decoration: none;
}
.masthead-brand .brand-sub {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-top: 2px;
}
.masthead-nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 1;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 2px 0;
}
.masthead-nav::-webkit-scrollbar {
  display: none;
}
.masthead-nav-item {
  display: flex;
  align-items: center;
  white-space: nowrap;
}
.masthead-nav-item:not(:first-child) {
  border-left: 1px solid rgba(255, 255, 255, 0.25);
  margin-left: 0;
}
.masthead-nav-item a {
  display: inline-block;
  padding: 6px var(--spacing-md);
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  letter-spacing: 1px;
  border-radius: var(--radius-sm);
}
.masthead-nav-item a:hover {
  color: var(--color-accent);
  text-decoration: none;
  background-color: rgba(255, 255, 255, 0.06);
}
.masthead-nav-item a.active {
  color: var(--color-accent);
  background-color: rgba(224, 165, 38, 0.12);
  font-weight: 600;
}
.masthead-nav-item a:focus {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}
.masthead-info-bar {
  background-color: var(--color-primary-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px 0;
}
.masthead-info-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}
.masthead-info-inner .date-text,
.masthead-info-inner .period-text {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 1px;
}
/* Hero Section */
.hero-section {
  position: relative;
  background-color: var(--color-primary);
  overflow: hidden;
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
}
.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.22;
  z-index: 1;
}
.hero-section .container {
  position: relative;
  z-index: 2;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--spacing-2xl);
  align-items: center;
}
.hero-content h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  color: #FFFFFF;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-md);
}
.hero-content h1 .highlight {
  color: var(--color-accent);
}
.hero-subtitle {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.75);
  max-width: 520px;
  margin-bottom: var(--spacing-lg);
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}
.hero-tags .tag {
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 1px;
}
.hero-action {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
  text-decoration: none;
  transition: all var(--transition-fast);
  line-height: 1.4;
}
.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-primary-dark);
}
.btn-primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-primary-dark);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-primary:focus {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}
.btn-secondary {
  background-color: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #FFFFFF;
}
.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.55);
  color: #FFFFFF;
  text-decoration: none;
}
.btn-accent-outline {
  background-color: transparent;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
}
.btn-accent-outline:hover {
  background-color: rgba(224, 165, 38, 0.1);
  border-color: var(--color-accent-hover);
  color: var(--color-accent-hover);
  text-decoration: none;
}
.hero-visual {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  backdrop-filter: blur(4px);
}
.hero-visual .visual-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
  display: block;
}
.hero-visual .visual-title {
  font-size: 18px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: var(--spacing-md);
}
.hero-visual .visual-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.hero-visual .visual-row:last-child {
  border-bottom: none;
}
.hero-visual .visual-row .row-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}
.hero-visual .visual-row .row-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-accent);
}
.hero-visual .visual-row .row-unit {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  margin-left: 4px;
}
/* Section Common */
.section {
  padding: var(--spacing-3xl) 0;
}
.section-alt {
  background-color: var(--color-card-alt);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}
.section-header {
  margin-bottom: var(--spacing-xl);
}
.section-header h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 1px;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}
.section-header p {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 680px;
  line-height: 1.8;
}
.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}
/* Comparison Table */
.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  background-color: var(--color-card-alt);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.comparison-table thead th {
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-weight: 600;
  text-align: left;
  padding: 14px 16px;
  letter-spacing: 1px;
  white-space: nowrap;
  font-size: 13px;
}
.comparison-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
  font-size: 14px;
}
.comparison-table tbody tr:last-child td {
  border-bottom: none;
}
.comparison-table tbody tr:hover td {
  background-color: rgba(224, 165, 38, 0.05);
}
.comparison-table .dimension-cell {
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
}
.comparison-table .value-highlight {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 16px;
}
.comparison-table .value-cyan {
  font-weight: 700;
  color: var(--color-cyan);
  font-size: 16px;
}
.table-note {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
  letter-spacing: 0.5px;
}
/* Comparison Cards */
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}
.comparison-card {
  background-color: var(--color-card-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.comparison-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.comparison-card .card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: rgba(224, 165, 38, 0.12);
  color: var(--color-accent);
  font-size: 20px;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
}
.comparison-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}
.comparison-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
/* Image Text Row */
.image-text-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}
.image-text-row .text-content h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.35;
}
.image-text-row .text-content p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.85;
  margin-bottom: var(--spacing-md);
}
.image-text-row .text-content p:last-child {
  margin-bottom: 0;
}
.image-holder {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
}
.image-holder img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}
.image-holder .image-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75), transparent);
  color: #FFFFFF;
  font-size: 13px;
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
  letter-spacing: 1px;
}
/* Trend Chart Placeholder */
.chart-placeholder {
  background-color: var(--color-card-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}
.chart-placeholder .chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}
.chart-placeholder .chart-header h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
}
.chart-placeholder .chart-header .legend {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}
.chart-placeholder .legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.chart-placeholder .legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.legend-dot.accent {
  background-color: var(--color-accent);
}
.legend-dot.cyan {
  background-color: var(--color-cyan);
}
.legend-dot.dark {
  background-color: var(--color-primary);
}
.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-md);
  height: 240px;
  padding-top: var(--spacing-md);
}
.chart-bar-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}
.chart-bar {
  width: 100%;
  max-width: 50px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: all var(--transition-base);
  min-height: 20px;
}
.chart-bar.bar-accent {
  background-color: var(--color-accent);
}
.chart-bar.bar-cyan {
  background-color: var(--color-cyan);
}
.chart-bar:hover {
  opacity: 0.8;
  transform: scaleY(1.03);
  transform-origin: bottom;
}
.chart-bar-label {
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
/* Deep Content */
.deep-content h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.35;
}
.deep-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}
.deep-content p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.85;
  margin-bottom: var(--spacing-md);
  text-align: justify;
}
.deep-content p:last-child {
  margin-bottom: 0;
}
/* Comparison List */
.comparison-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.comparison-list-item {
  display: grid;
  grid-template-columns: 160px 1fr 160px;
  gap: var(--spacing-md);
  align-items: center;
  background-color: var(--color-card-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.comparison-list-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}
.comparison-list-item .list-label {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-primary);
}
.comparison-list-item .list-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.comparison-list-item .list-value {
  font-weight: 700;
  font-size: 18px;
  color: var(--color-accent);
  text-align: right;
}
.comparison-list-item .list-value.cyan-text {
  color: var(--color-cyan);
}
/* FAQ */
.faq-wrapper {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background-color: var(--color-card-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.faq-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  gap: var(--spacing-md);
}
.faq-question .faq-icon {
  flex-shrink: 0;
  font-size: 18px;
  color: var(--color-accent);
  transition: transform var(--transition-fast);
  line-height: 1;
}
.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 var(--spacing-lg) var(--spacing-md);
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}
.faq-answer p {
  margin-bottom: var(--spacing-xs);
}
.faq-answer p:last-child {
  margin-bottom: 0;
}
/* CTA Form */
.cta-section {
  background-color: var(--color-primary);
  padding: var(--spacing-3xl) 0;
}
.cta-section .section-header h2 {
  color: #FFFFFF;
}
.cta-section .section-header p {
  color: rgba(255, 255, 255, 0.7);
}
.form-wrapper {
  max-width: 720px;
  margin: 0 auto;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 6px;
  letter-spacing: 1px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  color: #FFFFFF;
  font-size: 15px;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.35);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: rgba(255, 255, 255, 0.12);
}
.form-group select option {
  color: var(--color-text-primary);
  background-color: #FFFFFF;
}
.form-group textarea {
  resize: vertical;
  min-height: 100px;
}
.form-btn-row {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
}
/* Footer */
.site-footer {
  background-color: var(--color-primary-dark);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}
.footer-brand .footer-logo {
  font-size: 28px;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: 3px;
  text-decoration: none;
  display: block;
  margin-bottom: var(--spacing-sm);
}
.footer-brand .footer-logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}
.footer-brand p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.8;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: var(--spacing-xs);
}
.footer-col ul li a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-col ul li a:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-bottom a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}
.footer-beian {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  flex-wrap: wrap;
}
.footer-beian a {
  color: rgba(255, 255, 255, 0.45);
}
.footer-beian a:hover {
  color: var(--color-accent);
}
/* Responsive */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  .comparison-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
  .image-text-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  .comparison-list-item {
    grid-template-columns: 120px 1fr 120px;
  }
}
@media (max-width: 768px) {
  .masthead {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
  }
  .masthead-brand a {
    font-size: 28px;
    letter-spacing: 3px;
  }
  .masthead-nav {
    gap: 0;
    padding: 4px 0;
  }
  .masthead-nav-item a {
    padding: 5px var(--spacing-sm);
    font-size: 13px;
    letter-spacing: 0.5px;
  }
  .masthead-info-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
  .hero-content h1 {
    font-size: 32px;
    letter-spacing: 1px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .section {
    padding: var(--spacing-2xl) 0;
  }
  .section-header h2 {
    font-size: 24px;
  }
  .comparison-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  .comparison-list-item {
    grid-template-columns: 1fr;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
  }
  .comparison-list-item .list-value {
    text-align: left;
  }
  .form-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  .chart-bar-group {
    gap: 2px;
  }
  .chart-bar {
    max-width: 36px;
  }
  .chart-bar-label {
    font-size: 10px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .deep-content h2 {
    font-size: 22px;
  }
  .image-text-row .text-content h2 {
    font-size: 22px;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
  .hero-content h1 {
    font-size: 26px;
  }
  .hero-subtitle {
    font-size: 14px;
  }
  .btn {
    padding: 10px 18px;
    font-size: 14px;
  }
  .hero-action {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  .hero-visual {
    padding: var(--spacing-md);
  }
  .hero-visual .visual-title {
    font-size: 16px;
  }
  .hero-visual .visual-row .row-value {
    font-size: 17px;
  }
  .section-header h2 {
    font-size: 21px;
  }
  .comparison-table {
    font-size: 13px;
  }
  .comparison-table thead th,
  .comparison-table tbody td {
    padding: 10px 12px;
  }
  .chart-bars {
    height: 160px;
    gap: var(--spacing-xs);
  }
  .chart-bar {
    max-width: 26px;
  }
  .chart-bar-label {
    font-size: 9px;
  }
  .form-wrapper {
    padding: var(--spacing-lg);
  }
  .deep-content p {
    font-size: 14px;
  }
}

/* roulang page: category4 */
:root {
            --color-primary: #0F1F1A;
            --color-primary-light: #1A2F28;
            --color-primary-dark: #0A1511;
            --color-charcoal: #161616;
            --color-accent: #E0A526;
            --color-accent-hover: #C9921E;
            --color-cyan: #2EC4B6;
            --color-cyan-hover: #28A99E;
            --color-bg: #F4F1EA;
            --color-card: #E8EAE6;
            --color-card-alt: #FFFFFF;
            --color-text-primary: #1A1A1A;
            --color-text-secondary: #5A5A5A;
            --color-text-muted: #8A8A8A;
            --color-border: #E0E0E0;
            --color-border-light: #EBEBEB;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --spacing-xs: 8px;
            --spacing-sm: 12px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.4s ease;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.7;
            font-weight: 400;
            color: var(--color-text-primary);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        *, *::before, *::after {
            box-sizing: border-box;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
            text-decoration-color: var(--color-accent);
            text-underline-offset: 3px;
        }
        a:focus {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
            border-radius: 2px;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        button:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        button:active {
            transform: scale(0.98);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--spacing-lg);
            padding-right: var(--spacing-lg);
        }
        .site-header {
            background-color: var(--color-primary);
            border-bottom: 3px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .masthead {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
            padding-top: var(--spacing-md);
            padding-bottom: var(--spacing-md);
            min-height: 64px;
        }
        .masthead-brand {
            flex-shrink: 0;
        }
        .masthead-brand a {
            font-size: 36px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 4px;
            text-decoration: none;
            line-height: 1.2;
            display: block;
            transition: color var(--transition-fast);
        }
        .masthead-brand a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .masthead-brand .brand-sub {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 2px;
            text-transform: uppercase;
            display: block;
            margin-top: 2px;
        }
        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 0;
            flex-shrink: 1;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 2px 0;
        }
        .masthead-nav::-webkit-scrollbar {
            display: none;
        }
        .masthead-nav-item {
            display: flex;
            align-items: center;
            white-space: nowrap;
        }
        .masthead-nav-item:not(:first-child) {
            border-left: 1px solid rgba(255, 255, 255, 0.25);
            margin-left: 0;
        }
        .masthead-nav-item a {
            display: inline-block;
            padding: 6px var(--spacing-md);
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            letter-spacing: 1px;
            border-radius: var(--radius-sm);
        }
        .masthead-nav-item a:hover {
            color: var(--color-accent);
            text-decoration: none;
            background-color: rgba(255, 255, 255, 0.08);
        }
        .masthead-nav-item a.active {
            color: var(--color-accent);
            font-weight: 700;
        }
        .masthead-info-bar {
            background-color: var(--color-primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .masthead-info-inner {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            padding-top: 6px;
            padding-bottom: 6px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 0.5px;
        }
        .hero-section {
            background-color: var(--color-primary);
            background-image: linear-gradient(rgba(15, 31, 26, 0.88), rgba(15, 31, 26, 0.92)), url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            padding: var(--spacing-3xl) 0 var(--spacing-2xl);
            color: #FFFFFF;
            border-bottom: 3px solid var(--color-accent);
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }
        .hero-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: 2px;
            margin: 0 0 var(--spacing-md);
            color: #FFFFFF;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.75);
            margin: 0 0 var(--spacing-lg);
            max-width: 560px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-lg);
        }
        .hero-tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid rgba(224, 165, 38, 0.5);
            border-radius: 999px;
            color: var(--color-accent);
            background-color: rgba(224, 165, 38, 0.1);
            letter-spacing: 1px;
        }
        .hero-visual {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .hero-visual img {
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero-visual-caption {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            text-align: center;
            letter-spacing: 1px;
        }
        .section {
            padding: var(--spacing-3xl) 0;
        }
        .section-alt {
            background-color: var(--color-card);
        }
        .section-head {
            margin-bottom: var(--spacing-2xl);
            max-width: 720px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: 1px;
            margin: 0 0 var(--spacing-sm);
            color: var(--color-primary);
        }
        .section-head p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
        }
        .metric-card {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg) var(--spacing-md);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .metric-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .metric-label {
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--color-text-muted);
            margin-bottom: var(--spacing-sm);
        }
        .metric-value {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--color-accent);
            margin-bottom: var(--spacing-xs);
        }
        .metric-note {
            font-size: 12px;
            color: var(--color-text-muted);
        }
        .split-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }
        .split-grid.reverse {
            direction: rtl;
        }
        .split-grid.reverse > * {
            direction: ltr;
        }
        .split-grid img {
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .split-text h3 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-primary);
            margin: 0 0 var(--spacing-md);
        }
        .split-text p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin: 0 0 var(--spacing-md);
        }
        .split-text p:last-child {
            margin-bottom: 0;
        }
        .data-table-wrapper {
            overflow-x: auto;
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: var(--spacing-md);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 680px;
        }
        .data-table th {
            background-color: var(--color-primary);
            color: #FFFFFF;
            font-weight: 600;
            text-align: left;
            padding: 12px 16px;
            letter-spacing: 0.5px;
            font-size: 13px;
        }
        .data-table td {
            padding: 11px 16px;
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text-primary);
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background-color: rgba(224, 165, 38, 0.05);
        }
        .table-highlight {
            font-weight: 700;
            color: var(--color-accent);
        }
        .two-col-layout {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: var(--spacing-2xl);
        }
        .main-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 var(--spacing-md);
            line-height: 1.4;
        }
        .main-content p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-secondary);
            margin: 0 0 var(--spacing-md);
        }
        .side-panel {
            background-color: var(--color-primary);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            color: rgba(255, 255, 255, 0.8);
            box-shadow: var(--shadow-sm);
        }
        .side-panel h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-accent);
            margin: 0 0 var(--spacing-md);
            letter-spacing: 1px;
        }
        .side-panel ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .side-panel li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 14px;
            line-height: 1.6;
        }
        .side-panel li:last-child {
            border-bottom: none;
        }
        .side-panel li strong {
            color: #FFFFFF;
            font-weight: 600;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
        }
        .step-item {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .step-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .step-num {
            display: inline-block;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-weight: 800;
            font-size: 16px;
            line-height: 32px;
            text-align: center;
            margin-bottom: var(--spacing-sm);
        }
        .step-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 var(--spacing-xs);
        }
        .step-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        .faq-section {
            background-color: var(--color-card);
            padding: var(--spacing-3xl) 0;
        }
        .faq-inner {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-accent);
        }
        .faq-item summary {
            padding: var(--spacing-md) var(--spacing-lg);
            font-weight: 700;
            color: var(--color-primary);
            cursor: pointer;
            list-style: none;
            position: relative;
            font-size: 15px;
            letter-spacing: 0.5px;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            position: absolute;
            right: var(--spacing-lg);
            top: 50%;
            transform: translateY(-50%);
            font-size: 22px;
            font-weight: 400;
            color: var(--color-accent);
            transition: transform var(--transition-base);
        }
        .faq-item[open] summary::after {
            content: '−';
            transform: translateY(-50%);
        }
        .faq-item .faq-answer {
            padding: 0 var(--spacing-lg) var(--spacing-md);
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-secondary);
        }
        .cta-section {
            padding: var(--spacing-3xl) 0;
            background-color: var(--color-primary);
            background-image: linear-gradient(rgba(15, 31, 26, 0.94), rgba(15, 31, 26, 0.96)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
        }
        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }
        .cta-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 var(--spacing-sm);
            letter-spacing: 1px;
        }
        .cta-content p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            margin: 0;
        }
        .cta-form {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl);
        }
        .form-group {
            margin-bottom: var(--spacing-md);
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 10px 14px;
            font-size: 14px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-sm);
            background-color: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            transition: border-color var(--transition-fast), background-color var(--transition-fast);
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 1px;
            border-color: var(--color-accent);
            background-color: rgba(255, 255, 255, 0.15);
        }
        .form-group select option {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            background-color: var(--color-accent);
            border-radius: var(--radius-sm);
            border: none;
            letter-spacing: 1px;
            text-decoration: none;
            transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            text-decoration: none;
            color: #FFFFFF;
            box-shadow: 0 4px 16px rgba(224, 165, 38, 0.35);
        }
        .btn-primary:focus {
            outline: 2px solid #FFFFFF;
            outline-offset: 3px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 9px 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            background-color: transparent;
            border: 1px solid var(--color-accent);
            border-radius: var(--radius-sm);
            letter-spacing: 1px;
            text-decoration: none;
            transition: background-color var(--transition-fast), color var(--transition-fast);
        }
        .btn-outline:hover {
            background-color: rgba(224, 165, 38, 0.1);
            color: var(--color-accent);
            text-decoration: none;
        }
        .site-footer {
            background-color: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
            border-top: 3px solid var(--color-accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }
        .footer-logo {
            font-size: 30px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 3px;
            text-decoration: none;
            margin-bottom: var(--spacing-sm);
            display: block;
        }
        .footer-logo:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin: 0 0 var(--spacing-md);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 var(--spacing-sm);
            letter-spacing: 1px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            align-items: center;
            justify-content: space-between;
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-beian {
            display: flex;
            gap: var(--spacing-sm);
            align-items: center;
            flex-wrap: wrap;
        }
        .footer-beian a {
            color: rgba(255, 255, 255, 0.45);
            text-decoration: none;
        }
        .footer-beian a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .footer-bottom > div:last-child a {
            color: rgba(255, 255, 255, 0.45);
            text-decoration: none;
        }
        .footer-bottom > div:last-child a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        @media (max-width: 1024px) {
            .masthead {
                flex-wrap: wrap;
                gap: var(--spacing-sm);
            }
            .masthead-brand a {
                font-size: 28px;
                letter-spacing: 2px;
            }
            .hero-title {
                font-size: 34px;
            }
            .metric-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .two-col-layout {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
        }
        @media (max-width: 768px) {
            .masthead {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-xs);
                padding-bottom: var(--spacing-xs);
            }
            .masthead-nav {
                width: 100%;
                justify-content: flex-start;
                padding-bottom: 4px;
            }
            .masthead-nav-item a {
                padding: 4px 10px;
                font-size: 13px;
                letter-spacing: 0.5px;
            }
            .masthead-brand a {
                font-size: 24px;
                letter-spacing: 2px;
            }
            .masthead-info-inner {
                flex-direction: column;
                gap: 2px;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .section {
                padding: var(--spacing-2xl) 0;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .split-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .split-grid.reverse {
                direction: ltr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .metric-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
            .metric-value {
                font-size: 28px;
            }
            .cta-form {
                padding: var(--spacing-md);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-xs);
            }
            .container {
                padding-left: var(--spacing-md);
                padding-right: var(--spacing-md);
            }
        }
        @media (max-width: 480px) {
            .metric-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 24px;
                letter-spacing: 0.5px;
            }
            .cta-content h2 {
                font-size: 22px;
            }
            .masthead-brand a {
                font-size: 20px;
            }
            .masthead-nav-item a {
                padding: 3px 8px;
                font-size: 12px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #0F1F1A;
            --color-primary-light: #1A2F28;
            --color-primary-dark: #0A1511;
            --color-charcoal: #161616;
            --color-accent: #E0A526;
            --color-accent-hover: #C9921E;
            --color-cyan: #2EC4B6;
            --color-cyan-hover: #28A99E;
            --color-bg: #F4F1EA;
            --color-card: #E8EAE6;
            --color-card-alt: #FFFFFF;
            --color-text-primary: #1A1A1A;
            --color-text-secondary: #5A5A5A;
            --color-text-muted: #8A8A8A;
            --color-border: #E0E0E0;
            --color-border-light: #EBEBEB;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --spacing-xs: 8px;
            --spacing-sm: 12px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.4s ease;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.7;
            font-weight: 400;
            color: var(--color-text-primary);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
            text-decoration-color: var(--color-accent);
            text-underline-offset: 3px;
        }
        a:focus {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
            border-radius: 2px;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        button:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        button:active {
            transform: scale(0.98);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--spacing-lg);
            padding-right: var(--spacing-lg);
        }
        /* Header / Magazine Masthead Navigation */
        .site-header {
            background-color: var(--color-primary);
            border-bottom: 3px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .masthead {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            padding-top: var(--spacing-md);
            padding-bottom: var(--spacing-md);
        }
        .masthead-brand {
            flex-shrink: 0;
        }
        .masthead-brand a {
            font-size: 36px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 4px;
            text-decoration: none;
            line-height: 1.2;
            display: block;
            transition: color var(--transition-fast);
        }
        .masthead-brand a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .masthead-brand .brand-sub {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 2px;
            text-transform: uppercase;
            display: block;
            margin-top: 2px;
        }
        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 0;
            flex-shrink: 1;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 2px 0;
        }
        .masthead-nav::-webkit-scrollbar {
            display: none;
        }
        .masthead-nav-item {
            display: flex;
            align-items: center;
            white-space: nowrap;
        }
        .masthead-nav-item:not(:first-child) {
            border-left: 1px solid rgba(255, 255, 255, 0.25);
            margin-left: 0;
        }
        .masthead-nav-item a {
            display: inline-block;
            padding: 6px var(--spacing-md);
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            letter-spacing: 1px;
            border-radius: var(--radius-sm);
        }
        .masthead-nav-item a:hover {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.1);
            text-decoration: none;
        }
        .masthead-nav-item a.active {
            color: #FFFFFF;
            background-color: var(--color-accent);
            font-weight: 600;
        }
        .masthead-info-bar {
            background-color: var(--color-primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
        }
        .masthead-info-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 6px;
            padding-bottom: 6px;
            flex-wrap: wrap;
            gap: 8px;
        }
        /* Hero Section */
        .hero-data-hero {
            background-color: var(--color-primary);
            color: #FFFFFF;
            padding: var(--spacing-4xl) 0;
            border-bottom: 3px solid var(--color-accent);
            position: relative;
            overflow: hidden;
        }
        .hero-data-hero::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle at center, rgba(224, 165, 38, 0.18), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-data-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-3xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-data-left h1 {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 800;
            margin: 0 0 var(--spacing-lg);
            color: #FFFFFF;
            letter-spacing: 2px;
        }
        .hero-data-left .hero-highlight {
            color: var(--color-accent);
            border-bottom: 3px solid var(--color-accent);
        }
        .hero-data-left p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 0 var(--spacing-xl);
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }
        .btn-primary {
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            letter-spacing: 1px;
            border: 1px solid var(--color-accent);
            transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            box-shadow: var(--shadow-md);
            text-decoration: none;
        }
        .btn-secondary {
            background-color: transparent;
            color: #FFFFFF;
            font-weight: 500;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            letter-spacing: 1px;
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: border-color var(--transition-fast), background-color var(--transition-fast);
        }
        .btn-secondary:hover {
            border-color: var(--color-accent);
            background-color: rgba(224, 165, 38, 0.1);
            color: #FFFFFF;
            text-decoration: none;
        }
        .hero-compare-card {
            background-color: var(--color-card-alt);
            color: var(--color-text-primary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--color-border);
            position: relative;
        }
        .hero-compare-card .compare-badge {
            display: inline-block;
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 1px;
            margin-bottom: var(--spacing-md);
        }
        .hero-compare-card h2 {
            font-size: 22px;
            margin: 0 0 var(--spacing-md);
            font-weight: 700;
            color: var(--color-primary);
        }
        .hero-compare-card .compare-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--color-border-light);
        }
        .hero-compare-card .compare-row:last-child {
            border-bottom: none;
        }
        .hero-compare-card .compare-label {
            font-size: 14px;
            color: var(--color-text-secondary);
        }
        .hero-compare-card .compare-value {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
        }
        .hero-compare-card .compare-value.accent-value {
            color: var(--color-accent);
            font-size: 24px;
        }
        /* Section Common */
        .section {
            padding: var(--spacing-4xl) 0;
        }
        .section-alt {
            background-color: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--color-primary);
            margin: 0 0 var(--spacing-md);
            letter-spacing: 1px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin: 0 0 var(--spacing-xl);
            line-height: 1.7;
            max-width: 800px;
        }
        /* Stats Table */
        .data-table-wrap {
            background-color: var(--color-card-alt);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
        }
        .data-table th {
            background-color: var(--color-primary);
            color: #FFFFFF;
            text-align: left;
            padding: var(--spacing-md) var(--spacing-lg);
            font-weight: 600;
            letter-spacing: 1px;
            font-size: 14px;
        }
        .data-table td {
            padding: var(--spacing-md) var(--spacing-lg);
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text-secondary);
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table .td-highlight {
            color: var(--color-primary);
            font-weight: 600;
        }
        .data-table .td-accent {
            color: var(--color-accent);
            font-weight: 700;
        }
        /* Method Section */
        .method-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }
        .method-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
        }
        .method-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }
        .method-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 var(--spacing-md);
        }
        .method-content p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin: 0 0 var(--spacing-md);
        }
        .method-tag {
            display: inline-block;
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            color: var(--color-primary);
            font-size: 13px;
            padding: 4px 14px;
            border-radius: 20px;
            margin-right: var(--spacing-xs);
            margin-bottom: var(--spacing-xs);
        }
        /* Compare List */
        .compare-list-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
        }
        .compare-list-card {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .compare-list-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .compare-list-card.highlight {
            border: 2px solid var(--color-accent);
            box-shadow: var(--shadow-md);
        }
        .compare-list-card .compare-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: var(--spacing-md);
        }
        .compare-list-card .compare-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
        }
        .compare-list-card .badge-recommend {
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 20px;
            letter-spacing: 1px;
        }
        .compare-list-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .compare-list-card ul li {
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--color-border-light);
            font-size: 14px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .compare-list-card ul li:last-child {
            border-bottom: none;
        }
        .compare-list-card ul li .check-icon {
            color: var(--color-cyan);
            font-weight: 700;
            flex-shrink: 0;
        }
        .compare-list-card ul li .dash-icon {
            color: var(--color-text-muted);
            font-weight: 700;
            flex-shrink: 0;
        }
        /* Deep Content */
        .deep-content {
            background-color: var(--color-card-alt);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: var(--spacing-2xl);
            box-shadow: var(--shadow-sm);
            margin-bottom: var(--spacing-lg);
        }
        .deep-content h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 var(--spacing-md);
        }
        .deep-content h4 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin: var(--spacing-lg) 0 var(--spacing-sm);
        }
        .deep-content p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-text-secondary);
            margin: 0 0 var(--spacing-md);
            text-align: justify;
        }
        /* FAQ */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            overflow: hidden;
            transition: box-shadow var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: var(--spacing-md) var(--spacing-lg);
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            font-size: 22px;
            color: var(--color-accent);
            font-weight: 700;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 var(--spacing-lg) var(--spacing-lg);
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-secondary);
        }
        /* CTA Section */
        .cta-section {
            background-color: var(--color-primary);
            color: #FFFFFF;
            padding: var(--spacing-4xl) 0;
        }
        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-3xl);
            align-items: center;
        }
        .cta-left h2 {
            font-size: 32px;
            font-weight: 800;
            margin: 0 0 var(--spacing-md);
            color: #FFFFFF;
        }
        .cta-left p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin: 0;
        }
        .cta-form {
            background-color: var(--color-card-alt);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            color: var(--color-text-primary);
            box-shadow: var(--shadow-lg);
        }
        .cta-form h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 var(--spacing-md);
        }
        .form-group {
            margin-bottom: var(--spacing-md);
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 15px;
            background-color: #FFFFFF;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            box-sizing: border-box;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--color-cyan);
            box-shadow: 0 0 0 3px rgba(46, 196, 182, 0.15);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn-submit {
            width: 100%;
            background-color: var(--color-accent);
            color: #FFFFFF;
            font-weight: 600;
            padding: 14px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            letter-spacing: 2px;
            border: 1px solid var(--color-accent);
            transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .btn-submit:hover {
            background-color: var(--color-accent-hover);
            box-shadow: var(--shadow-md);
        }
        /* Footer */
        .site-footer {
            background-color: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: var(--spacing-3xl) 0 var(--spacing-lg);
            border-top: 3px solid var(--color-accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }
        .footer-brand .footer-logo {
            font-size: 28px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 3px;
            text-decoration: none;
            display: block;
            margin-bottom: var(--spacing-sm);
        }
        .footer-brand .footer-logo:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            margin: 0;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 var(--spacing-md);
            letter-spacing: 1px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            padding-top: var(--spacing-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-beian {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }
        .footer-beian a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
        }
        .footer-beian a:hover {
            color: var(--color-accent);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-data-inner {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
            .method-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .compare-list-wrap {
                grid-template-columns: 1fr;
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .masthead {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }
            .masthead-brand a {
                font-size: 28px;
                letter-spacing: 2px;
            }
            .masthead-nav {
                width: 100%;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .masthead-nav-item a {
                font-size: 13px;
                padding: 4px 12px;
            }
            .hero-data-left h1 {
                font-size: 32px;
            }
            .section {
                padding: var(--spacing-3xl) 0;
            }
            .section-title {
                font-size: 26px;
            }
            .data-table {
                font-size: 13px;
            }
            .data-table th,
            .data-table td {
                padding: var(--spacing-sm) var(--spacing-md);
            }
            .deep-content {
                padding: var(--spacing-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .method-image img {
                height: 240px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding-left: var(--spacing-md);
                padding-right: var(--spacing-md);
            }
            .hero-data-left h1 {
                font-size: 28px;
            }
            .hero-data-left p {
                font-size: 15px;
            }
            .hero-compare-card {
                padding: var(--spacing-lg);
            }
            .hero-compare-card .compare-value.accent-value {
                font-size: 20px;
            }
            .section-title {
                font-size: 22px;
            }
            .deep-content h3 {
                font-size: 22px;
            }
            .data-table {
                font-size: 12px;
            }
            .data-table th,
            .data-table td {
                padding: var(--spacing-xs) var(--spacing-sm);
                word-break: break-all;
            }
            .btn-primary,
            .btn-secondary {
                padding: 10px 18px;
                font-size: 14px;
            }
            .cta-form {
                padding: var(--spacing-lg);
            }
            .compare-list-card {
                padding: var(--spacing-lg);
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #0F1F1A;
            --color-primary-light: #1A2F28;
            --color-primary-dark: #0A1511;
            --color-charcoal: #161616;
            --color-accent: #E0A526;
            --color-accent-hover: #C9921E;
            --color-cyan: #2EC4B6;
            --color-cyan-hover: #28A99E;
            --color-bg: #F4F1EA;
            --color-card: #E8EAE6;
            --color-card-alt: #FFFFFF;
            --color-text-primary: #1A1A1A;
            --color-text-secondary: #5A5A5A;
            --color-text-muted: #8A8A8A;
            --color-border: #E0E0E0;
            --color-border-light: #EBEBEB;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --spacing-xs: 8px;
            --spacing-sm: 12px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.4s ease;
            --container-max: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.7;
            font-weight: 400;
            color: var(--color-text-primary);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
            text-decoration-color: var(--color-accent);
            text-underline-offset: 3px;
        }
        a:focus {
            outline: 2px solid var(--color-cyan);
            outline-offset: 2px;
            border-radius: 2px;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        button:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        button:active {
            transform: scale(0.98);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--spacing-lg);
            padding-right: var(--spacing-lg);
        }

        /* Header / Magazine Masthead Navigation */
        .site-header {
            background-color: var(--color-primary);
            border-bottom: 3px solid var(--color-accent);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .masthead {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            padding-top: var(--spacing-md);
            padding-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }
        .masthead-brand {
            flex-shrink: 0;
        }
        .masthead-brand a {
            font-size: 36px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 4px;
            text-decoration: none;
            line-height: 1.2;
            display: block;
            transition: color var(--transition-fast);
        }
        .masthead-brand a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .masthead-brand .brand-sub {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 2px;
            text-transform: uppercase;
            display: block;
            margin-top: 2px;
        }
        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 0;
            flex-shrink: 1;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 2px 0;
        }
        .masthead-nav::-webkit-scrollbar {
            display: none;
        }
        .masthead-nav-item {
            display: flex;
            align-items: center;
            white-space: nowrap;
        }
        .masthead-nav-item:not(:first-child) {
            border-left: 1px solid rgba(255, 255, 255, 0.25);
            margin-left: 0;
        }
        .masthead-nav-item a {
            display: inline-block;
            padding: 6px var(--spacing-md);
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            letter-spacing: 1px;
            border-radius: var(--radius-sm);
        }
        .masthead-nav-item a:hover {
            color: var(--color-accent);
            text-decoration: none;
            background-color: rgba(255, 255, 255, 0.06);
        }
        .masthead-nav-item a.active {
            color: var(--color-accent);
            font-weight: 700;
            background-color: rgba(224, 165, 38, 0.12);
        }
        .masthead-info-bar {
            background-color: var(--color-primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .masthead-info-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            padding-top: 6px;
            padding-bottom: 6px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 0.5px;
        }

        /* Hero */
        .category-hero {
            background-image: linear-gradient(120deg, rgba(15, 31, 26, 0.92) 0%, rgba(22, 22, 22, 0.88) 60%, rgba(15, 31, 26, 0.94) 100%), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            padding: var(--spacing-4xl) 0;
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-cyan), var(--color-accent));
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background-color: rgba(224, 165, 38, 0.15);
            border: 1px solid rgba(224, 165, 38, 0.4);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            border-radius: 20px;
            margin-bottom: var(--spacing-lg);
        }
        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            color: #FFFFFF;
            letter-spacing: 1px;
            margin-bottom: var(--spacing-lg);
            max-width: 760px;
        }
        .category-hero p.hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.78);
            max-width: 680px;
            margin-bottom: var(--spacing-xl);
        }
        .hero-actions {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.5px;
            transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            text-decoration: none;
            border: 1px solid transparent;
        }
        .btn-primary {
            background-color: var(--color-accent);
            color: var(--color-primary-dark);
            border-color: var(--color-accent);
        }
        .btn-primary:hover {
            background-color: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            text-decoration: none;
        }
        .btn-secondary {
            background-color: transparent;
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.35);
        }
        .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.08);
            border-color: var(--color-cyan);
            color: var(--color-cyan);
            transform: translateY(-2px);
            text-decoration: none;
        }

        /* Section Common */
        .section {
            padding: var(--spacing-3xl) 0;
        }
        .section-alt {
            background-color: var(--color-card);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.3;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: var(--spacing-xl);
        }

        /* Data Strip */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            margin-top: -60px;
            position: relative;
            z-index: 10;
        }
        .data-strip-item {
            text-align: center;
            padding: var(--spacing-md);
            border-right: 1px solid var(--color-border-light);
        }
        .data-strip-item:last-child {
            border-right: none;
        }
        .data-strip-label {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: var(--spacing-xs);
        }
        .data-strip-value {
            font-size: 40px;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.1;
            letter-spacing: 1px;
        }
        .data-strip-note {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: var(--spacing-xs);
        }

        /* Deep Content */
        .deep-content {
            max-width: 860px;
            margin: 0 auto;
        }
        .deep-content h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.35;
            margin-bottom: var(--spacing-lg);
            letter-spacing: 0.5px;
        }
        .deep-content p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-primary);
            margin-bottom: var(--spacing-lg);
        }
        .deep-content p strong {
            color: var(--color-primary);
            font-weight: 700;
        }
        .deep-content .highlight-box {
            background-color: var(--color-card-alt);
            border-left: 4px solid var(--color-accent);
            padding: var(--spacing-lg);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: var(--spacing-xl) 0;
            box-shadow: var(--shadow-sm);
        }
        .deep-content .highlight-box p {
            margin-bottom: 0;
            color: var(--color-text-secondary);
            font-size: 14px;
        }

        /* Stage Timeline */
        .stage-timeline {
            max-width: 860px;
            margin: 0 auto;
            position: relative;
        }
        .stage-timeline::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 0;
            bottom: 0;
            width: 2px;
            background-color: var(--color-border);
        }
        .stage-item {
            display: flex;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
            position: relative;
            padding-left: 60px;
        }
        .stage-item:last-child {
            margin-bottom: 0;
        }
        .stage-dot {
            position: absolute;
            left: 14px;
            top: 6px;
            width: 22px;
            height: 22px;
            background-color: var(--color-accent);
            border-radius: 50%;
            border: 4px solid var(--color-bg);
            box-shadow: 0 0 0 2px var(--color-accent);
            z-index: 2;
        }
        .stage-card {
            flex: 1;
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-fast);
        }
        .stage-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stage-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
        }
        .stage-card p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .stage-tag {
            display: inline-block;
            padding: 3px 12px;
            background-color: rgba(46, 196, 182, 0.12);
            border: 1px solid rgba(46, 196, 182, 0.3);
            color: var(--color-cyan-hover);
            font-size: 12px;
            font-weight: 600;
            border-radius: 20px;
            margin-bottom: var(--spacing-md);
            letter-spacing: 1px;
        }

        /* Data Table */
        .data-table-wrapper {
            max-width: 960px;
            margin: 0 auto;
            overflow-x: auto;
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }
        .data-table th {
            background-color: var(--color-primary);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 14px var(--spacing-md);
            text-align: left;
            border-bottom: 2px solid var(--color-accent);
            white-space: nowrap;
        }
        .data-table td {
            padding: 13px var(--spacing-md);
            font-size: 14px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid var(--color-border-light);
            text-align: left;
        }
        .data-table tbody tr:hover td {
            background-color: rgba(224, 165, 38, 0.04);
        }
        .data-table .td-highlight {
            font-weight: 700;
            color: var(--color-accent);
        }
        .data-table .td-primary {
            font-weight: 600;
            color: var(--color-primary);
        }

        /* Image Content */
        .image-content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }
        .image-content-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
        }
        .image-content-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .image-content-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-lg);
            line-height: 1.35;
        }
        .image-content-text p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-md);
        }

        /* FAQ Section */
        .faq-wrapper {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: var(--color-card-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-md);
            overflow: hidden;
            transition: box-shadow var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: var(--spacing-lg);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 700;
            color: var(--color-accent);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
            color: var(--color-cyan);
        }
        .faq-answer {
            padding: 0 var(--spacing-lg) var(--spacing-lg);
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-text-secondary);
        }

        /* CTA Form */
        .cta-section {
            background-color: var(--color-primary);
            border-top: 3px solid var(--color-accent);
            padding: var(--spacing-3xl) 0;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: start;
        }
        .cta-info h2 {
            font-size: 28px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: var(--spacing-md);
            line-height: 1.35;
        }
        .cta-info p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
        }
        .cta-form {
            display: grid;
            gap: var(--spacing-md);
            background-color: var(--color-primary-light);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
        }
        .cta-form label {
            font-size: 13px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 1px;
            margin-bottom: 4px;
        }
        .cta-form input,
        .cta-form select,
        .cta-form textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background-color: rgba(255, 255, 255, 0.06);
            color: #FFFFFF;
            font-size: 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .cta-form input:focus,
        .cta-form select:focus,
        .cta-form textarea:focus {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(224, 165, 38, 0.2);
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }
        .cta-form select option {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }
        .cta-form .btn-submit {
            background-color: var(--color-accent);
            color: var(--color-primary-dark);
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 700;
            letter-spacing: 2px;
            border-radius: var(--radius-md);
            border: none;
            transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        .cta-form .btn-submit:hover {
            background-color: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 20px rgba(224, 165, 38, 0.3);
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding-top: var(--spacing-3xl);
            border-top: 1px solid var(--color-border);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-2xl);
            padding-bottom: var(--spacing-2xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .footer-logo {
            font-size: 28px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 3px;
            text-decoration: none;
            display: inline-block;
            margin-bottom: var(--spacing-md);
        }
        .footer-brand .footer-logo:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 1px;
            margin-bottom: var(--spacing-md);
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
        }
        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            padding: var(--spacing-lg) 0;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-beian {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
            align-items: center;
        }
        .footer-beian a {
            color: rgba(255, 255, 255, 0.45);
            text-decoration: none;
        }
        .footer-beian a:hover {
            color: var(--color-accent);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .masthead {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }
            .masthead-nav {
                width: 100%;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
                padding: var(--spacing-lg);
            }
            .data-strip-item {
                border-right: none;
                border-bottom: 1px solid var(--color-border-light);
            }
            .data-strip-item:nth-child(3),
            .data-strip-item:nth-child(4) {
                border-bottom: none;
            }
            .image-content-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xl);
            }
        }
        @media (max-width: 768px) {
            .category-hero h1 {
                font-size: 32px;
            }
            .category-hero p.hero-sub {
                font-size: 15px;
            }
            .section {
                padding: var(--spacing-2xl) 0;
            }
            .section-title {
                font-size: 24px;
            }
            .deep-content h2 {
                font-size: 22px;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                margin-top: -40px;
            }
            .data-strip-value {
                font-size: 32px;
            }
            .data-table-wrapper {
                border-radius: var(--radius-md);
            }
            .stage-item {
                padding-left: 40px;
                gap: var(--spacing-md);
            }
            .stage-timeline::before {
                left: 14px;
            }
            .stage-dot {
                left: 4px;
                width: 20px;
                height: 20px;
            }
            .cta-form {
                padding: var(--spacing-lg);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }
        }
        @media (max-width: 520px) {
            .masthead-brand a {
                font-size: 28px;
                letter-spacing: 2px;
            }
            .masthead-brand .brand-sub {
                font-size: 10px;
            }
            .masthead-nav-item a {
                padding: 5px 10px;
                font-size: 13px;
            }
            .masthead-info-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 2px;
            }
            .category-hero {
                padding: var(--spacing-2xl) 0;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .data-strip {
                grid-template-columns: 1fr;
                padding: var(--spacing-md);
                margin-top: -20px;
            }
            .data-strip-item {
                border-bottom: 1px solid var(--color-border-light);
                padding: var(--spacing-sm);
            }
            .data-strip-item:last-child {
                border-bottom: none;
            }
            .section-title {
                font-size: 20px;
            }
            .deep-content h2 {
                font-size: 19px;
            }
            .stage-card {
                padding: var(--spacing-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .data-table th,
            .data-table td {
                font-size: 12px;
                padding: 8px 10px;
            }
        }

/* roulang page: category7 */
:root {
  --color-primary: #0F1F1A;
  --color-primary-light: #1A2F28;
  --color-primary-dark: #0A1511;
  --color-charcoal: #161616;
  --color-accent: #E0A526;
  --color-accent-hover: #C9921E;
  --color-cyan: #2EC4B6;
  --color-cyan-hover: #28A99E;
  --color-bg: #F4F1EA;
  --color-card: #E8EAE6;
  --color-card-alt: #FFFFFF;
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #5A5A5A;
  --color-text-muted: #8A8A8A;
  --color-border: #E0E0E0;
  --color-border-light: #EBEBEB;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 80px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.4s ease;
  --container-max: 1200px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  font-weight: 400;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 3px;
}

a:focus {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
  border-radius: 2px;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

button:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button:active {
  transform: scale(0.98);
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

/* Header / Magazine Masthead Navigation */
.site-header {
  background-color: var(--color-primary);
  border-bottom: 3px solid var(--color-accent);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.masthead {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding-top: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
}

.masthead-brand {
  flex-shrink: 0;
}

.masthead-brand a {
  font-size: 32px;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: 4px;
  text-decoration: none;
  line-height: 1.2;
  display: block;
  transition: color var(--transition-fast);
}

.masthead-brand a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.masthead-brand .brand-sub {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-top: 2px;
}

.masthead-nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 1;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 2px 0;
  min-width: 0;
}

.masthead-nav::-webkit-scrollbar {
  display: none;
}

.masthead-nav-item {
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.masthead-nav-item:not(:first-child) {
  border-left: 1px solid rgba(255, 255, 255, 0.25);
  margin-left: 0;
}

.masthead-nav-item a {
  display: inline-block;
  padding: 6px var(--spacing-md);
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  letter-spacing: 1px;
  border-radius: var(--radius-sm);
}

.masthead-nav-item a:hover {
  color: var(--color-accent);
  text-decoration: none;
  background-color: rgba(255, 255, 255, 0.08);
}

.masthead-nav-item a.active {
  color: #FFFFFF;
  background-color: var(--color-accent);
  font-weight: 600;
}

.masthead-info-bar {
  background-color: var(--color-primary-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.masthead-info-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  padding-top: 6px;
  padding-bottom: 6px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.5px;
  flex-wrap: wrap;
}

.date-text,
.period-text {
  white-space: nowrap;
}

/* Page hero */
.page-hero {
  background-color: var(--color-primary-light);
  color: #FFFFFF;
  padding: var(--spacing-3xl) 0 var(--spacing-3xl);
  border-bottom: 2px solid var(--color-accent);
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(224, 165, 38, 0.16), rgba(224, 165, 38, 0) 70%);
  pointer-events: none;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.35);
}

.page-hero h1 {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 800;
  margin: 0 0 var(--spacing-md);
  letter-spacing: 1px;
  position: relative;
  z-index: 1;
  color: #FFFFFF;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
  max-width: 720px;
  margin: 0;
  position: relative;
  z-index: 1;
}

/* Section */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-alt {
  background-color: var(--color-card);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.section-head {
  margin-bottom: var(--spacing-2xl);
  max-width: 680px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  background: rgba(224, 165, 38, 0.1);
  padding: 2px 10px;
  border-radius: 100px;
  border: 1px solid rgba(224, 165, 38, 0.25);
  margin-bottom: var(--spacing-sm);
}

.section-head h2 {
  font-size: 28px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--spacing-sm);
}

.section-head p {
  color: var(--color-text-secondary);
  margin: 0;
}

/* Overview */
.overview-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.overview-text h2 {
  font-size: 26px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--spacing-md);
}

.overview-text p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.overview-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.overview-media img {
  width: 100%;
  height: auto;
  display: block;
}

/* Dimension cards */
.dimension-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.dimension-card {
  background: var(--color-card-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.dimension-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.dim-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.dimension-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--spacing-sm);
}

.dimension-card p {
  color: var(--color-text-secondary);
  margin: 0;
}

/* Long read */
.long-read {
  padding: var(--spacing-2xl) 0;
}

.long-read-block {
  margin-bottom: var(--spacing-2xl);
}

.long-read-block h2 {
  font-size: 27px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--spacing-md);
  line-height: 1.3;
}

.prose p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.75;
}

.prose p strong {
  color: var(--color-text-primary);
}

/* Steps */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.step-card {
  background: var(--color-card-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.step-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.step-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--spacing-xs);
}

.step-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
}

/* Timeline */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 3px solid var(--color-accent);
  padding-left: var(--spacing-xl);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
  padding-left: var(--spacing-md);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -31px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-date {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 1px;
  display: block;
  margin-bottom: var(--spacing-xs);
}

.timeline-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--spacing-xs);
}

.timeline-desc {
  color: var(--color-text-secondary);
  margin: 0;
}

/* FAQ */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-card-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  padding: 0;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  background: transparent;
  gap: var(--spacing-md);
}

.faq-question .indicator {
  font-size: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-question .indicator {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-answer p {
  margin: 0;
}

/* CTA */
.cta-section {
  background-color: var(--color-primary);
  padding: var(--spacing-3xl) 0;
  border-top: 3px solid var(--color-accent);
}

.cta-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.cta-text h2 {
  font-size: 28px;
  font-weight: 700;
  color: #FFFFFF;
  margin: 0 0 var(--spacing-sm);
}

.cta-text p {
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

.cta-form {
  background: var(--color-card-alt);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form-field {
  margin-bottom: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-field label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.form-input,
.form-select,
.form-textarea {
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #FFFFFF;
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
  font-size: 15px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(224, 165, 38, 0.15);
}

.form-textarea {
  min-height: 90px;
  resize: vertical;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #FFFFFF;
  text-decoration: none;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: rgba(224, 165, 38, 0.1);
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

.form-note {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
}

/* Footer */
.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--spacing-3xl) 0 var(--spacing-sm);
  border-top: 2px solid var(--color-accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand .footer-logo {
  font-size: 26px;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: 3px;
  text-decoration: none;
  display: inline-block;
  margin-bottom: var(--spacing-sm);
}

.footer-brand .footer-logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  margin: 0;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #FFFFFF;
  margin: 0 0 var(--spacing-sm);
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding-top: var(--spacing-md);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-beian {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  color: rgba(255, 255, 255, 0.45);
}

.footer-beian a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
}

.footer-beian a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 1024px) {
  .masthead {
    gap: var(--spacing-md);
  }
  .masthead-brand a {
    font-size: 28px;
    letter-spacing: 3px;
  }
  .overview-grid {
    gap: var(--spacing-xl);
  }
  .dimension-grid {
    gap: var(--spacing-md);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
  .cta-wrap {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
  .masthead {
    gap: var(--spacing-sm);
  }
  .masthead-brand a {
    font-size: 24px;
    letter-spacing: 2px;
  }
  .masthead-brand .brand-sub {
    font-size: 10px;
    letter-spacing: 1px;
  }
  .masthead-nav-item a {
    padding: 6px var(--spacing-sm);
    font-size: 13px;
    letter-spacing: 0.5px;
  }
  .masthead-info-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .page-hero {
    padding: var(--spacing-2xl) 0;
  }
  .page-hero h1 {
    font-size: 28px;
  }
  .section {
    padding: var(--spacing-2xl) 0;
  }
  .overview-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  .dimension-grid {
    grid-template-columns: 1fr;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .long-read-block h2 {
    font-size: 23px;
  }
  .timeline {
    padding-left: var(--spacing-md);
  }
  .timeline-item::before {
    left: -19px;
    width: 10px;
    height: 10px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  .cta-form {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 520px) {
  body {
    font-size: 14px;
  }
  .masthead-brand a {
    font-size: 20px;
    letter-spacing: 1px;
  }
  .masthead-brand .brand-sub {
    font-size: 9px;
    letter-spacing: 0.5px;
  }
  .page-hero h1 {
    font-size: 24px;
  }
  .section-head h2 {
    font-size: 21px;
  }
  .overview-text h2 {
    font-size: 22px;
  }
  .dimension-card {
    padding: var(--spacing-lg);
  }
  .step-card {
    padding: var(--spacing-md);
  }
  .timeline {
    padding-left: var(--spacing-sm);
  }
  .timeline-item::before {
    left: -13px;
    width: 8px;
    height: 8px;
  }
}