/* roulang page: index */
:root {
            --color-primary: #1b3b2b;
            --color-primary-light: #2a5a3f;
            --color-accent: #c4a07a;
            --color-accent-light: #d9bfa0;
            --color-cta: #e0553d;
            --color-cta-hover: #c44832;
            --color-dark-bg: #0f2318;
            --color-light-bg: #faf7f2;
            --color-text: #1a1a1a;
            --color-text-secondary: #5c5c5c;
            --color-text-weak: #8a8a8a;
            --color-white: #ffffff;
            --color-border: #e5e0d8;
            --color-faq-bg: #f5f2ed;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 2px 12px rgba(27, 59, 43, 0.08);
            --shadow-card-hover: 0 4px 20px rgba(27, 59, 43, 0.15);
            --shadow-btn-hover: 0 6px 18px rgba(224, 85, 61, 0.28);
            --shadow-nav: 0 1px 8px rgba(0, 0, 0, 0.12);
            --transition-base: 0.25s ease;
            --font-stack: system-ui, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --max-width: 1280px;
            --spacing-section: 4.5rem;
            --spacing-card: 1.75rem;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-stack);
            color: var(--color-text);
            background-color: var(--color-light-bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base);
        }

        a:hover {
            color: var(--color-cta);
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

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

        .section-title {
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            margin-bottom: 0.4rem;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 48px;
            height: 3px;
            background: var(--color-cta);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-secondary);
            margin-bottom: 2.5rem;
            max-width: 600px;
        }

        .section-header {
            margin-bottom: 2.5rem;
        }

        .section-header.centered {
            text-align: center;
        }

        .section-header.centered .section-title::after {
            left: 50%;
            transform: translateX(-50%);
        }

        .section-header.centered .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-nav);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-nav.scrolled {
            background: rgba(15, 35, 24, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.2);
        }

        .site-nav.scrolled .nav-logo-text,
        .site-nav.scrolled .nav-link,
        .site-nav.scrolled .nav-search-trigger {
            color: #ffffff;
        }

        .site-nav.scrolled .nav-link:hover {
            color: var(--color-accent-light);
        }

        .site-nav.scrolled .nav-link.active {
            color: var(--color-cta);
        }

        .site-nav.scrolled .nav-toggle span {
            background: #ffffff;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            height: 64px;
            gap: 1.5rem;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: nowrap;
        }

        .nav-link {
            display: inline-block;
            padding: 0.45rem 0.85rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-md);
            white-space: nowrap;
            transition: color var(--transition-base), background var(--transition-base);
            letter-spacing: 0.01em;
        }

        .nav-link:hover {
            color: var(--color-cta);
        }

        .nav-link.active {
            color: var(--color-cta);
            font-weight: 600;
            background: rgba(224, 85, 61, 0.07);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .nav-search-trigger {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--color-border);
            background: transparent;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            transition: all var(--transition-base);
            font-size: 0.9rem;
        }

        .nav-search-trigger:hover {
            border-color: var(--color-cta);
            color: var(--color-cta);
        }

        .nav-hot-tag {
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--color-cta);
            background: rgba(224, 85, 61, 0.06);
            padding: 0.3rem 0.7rem;
            border-radius: 20px;
            white-space: nowrap;
            cursor: pointer;
            transition: background var(--transition-base);
        }

        .nav-hot-tag:hover {
            background: rgba(224, 85, 61, 0.14);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px;
            z-index: 1001;
        }

        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(15, 35, 24, 0.98);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            padding: 2rem;
        }

        .mobile-nav-panel.open {
            display: flex;
        }

        .mobile-nav-panel .nav-link {
            font-size: 1.3rem;
            color: #ffffff;
            padding: 0.6rem 1.2rem;
        }

        .mobile-nav-panel .nav-link:hover,
        .mobile-nav-panel .nav-link.active {
            color: var(--color-cta);
        }

        .mobile-nav-close {
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 78vh;
            display: flex;
            align-items: center;
            background: var(--color-dark-bg);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 35, 24, 0.88) 0%, rgba(27, 59, 43, 0.72) 50%, rgba(15, 35, 24, 0.85) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 3rem;
            flex-wrap: wrap;
            width: 100%;
        }

        .hero-text {
            flex: 1 1 480px;
            color: #ffffff;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(224, 85, 61, 0.85);
            color: #fff;
            font-size: 0.82rem;
            font-weight: 600;
            padding: 0.35rem 0.9rem;
            border-radius: 20px;
            letter-spacing: 0.03em;
            margin-bottom: 1.2rem;
        }

        .hero-title {
            font-size: clamp(2.4rem, 4.5vw, 3.2rem);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
            color: #ffffff;
        }

        .hero-title .highlight {
            color: var(--color-cta);
        }

        .hero-desc {
            font-size: 1.1rem;
            line-height: 1.65;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 2rem;
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.6rem;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all var(--transition-base);
            border: none;
            letter-spacing: 0.02em;
            white-space: nowrap;
            text-align: center;
        }

        .btn-primary {
            background: var(--color-cta);
            color: #fff;
            box-shadow: 0 3px 12px rgba(224, 85, 61, 0.3);
        }

        .btn-primary:hover {
            background: var(--color-cta-hover);
            color: #fff;
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-1px);
        }

        .btn-ghost {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.55);
        }

        .btn-ghost:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .btn-outline-dark {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
        }

        .btn-outline-dark:hover {
            background: var(--color-primary);
            color: #fff;
        }

        .btn-sm {
            padding: 0.5rem 1rem;
            font-size: 0.82rem;
            border-radius: var(--radius-sm);
        }

        .hero-data-scroll {
            flex: 0 0 340px;
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: var(--radius-xl);
            padding: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: #fff;
            max-height: 380px;
            overflow: hidden;
        }

        .hero-data-scroll .data-item {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            padding: 0.7rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            animation: scrollData 12s linear infinite;
        }

        .hero-data-scroll .data-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-cta);
            flex-shrink: 0;
            animation: pulse 2s ease-in-out infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(1.5);
            }
        }

        @keyframes scrollData {
            0% {
                transform: translateY(0);
            }
            100% {
                transform: translateY(-50%);
            }
        }

        .hero-data-scroll .data-text {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.4;
        }

        .hero-data-scroll .data-val {
            font-weight: 700;
            color: var(--color-accent-light);
            font-size: 0.85rem;
        }

        /* ========== FEATURE CARDS ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 1.4rem;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.3rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-accent);
        }

        .feature-card .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            margin: 0 auto 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            background: rgba(27, 59, 43, 0.08);
            color: var(--color-primary);
            transition: all var(--transition-base);
        }

        .feature-card:hover .feature-icon {
            background: var(--color-primary);
            color: #fff;
        }

        .feature-card:nth-child(2) .feature-icon {
            background: rgba(196, 160, 122, 0.18);
            color: #8b6f4e;
        }
        .feature-card:nth-child(2):hover .feature-icon {
            background: var(--color-accent);
            color: #fff;
        }

        .feature-card:nth-child(3) .feature-icon {
            background: rgba(224, 85, 61, 0.1);
            color: var(--color-cta);
        }
        .feature-card:nth-child(3):hover .feature-icon {
            background: var(--color-cta);
            color: #fff;
        }

        .feature-card:nth-child(4) .feature-icon {
            background: rgba(27, 59, 43, 0.06);
            color: #2a5a3f;
        }
        .feature-card:nth-child(4):hover .feature-icon {
            background: var(--color-primary-light);
            color: #fff;
        }

        .feature-card:nth-child(5) .feature-icon {
            background: rgba(196, 160, 122, 0.14);
            color: #9b7b5a;
        }
        .feature-card:nth-child(5):hover .feature-icon {
            background: #b8906a;
            color: #fff;
        }

        .feature-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
            color: var(--color-text);
        }

        .feature-card p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content-block {
            display: flex;
            align-items: center;
            gap: 3rem;
            flex-wrap: wrap;
        }

        .deep-content-block.reverse {
            flex-direction: row-reverse;
        }

        .deep-content-text {
            flex: 1 1 400px;
        }

        .deep-content-text h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }

        .deep-content-text p {
            font-size: 1rem;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin-bottom: 1rem;
        }

        .deep-content-image {
            flex: 0 0 440px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .deep-content-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform 0.5s ease;
        }

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

        /* ========== DASHBOARD ========== */
        .dashboard-mixed {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: start;
        }

        .dashboard-rank {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
        }

        .dashboard-rank h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 1rem;
        }

        .rank-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .rank-list li {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--color-border);
            font-size: 0.9rem;
        }

        .rank-list li:last-child {
            border-bottom: none;
        }

        .rank-num {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.8rem;
            flex-shrink: 0;
        }

        .rank-list li:nth-child(1) .rank-num {
            background: var(--color-cta);
        }
        .rank-list li:nth-child(2) .rank-num {
            background: #d4784a;
        }
        .rank-list li:nth-child(3) .rank-num {
            background: var(--color-accent);
        }

        .rank-name {
            flex: 1;
            font-weight: 500;
        }
        .rank-val {
            font-weight: 600;
            color: var(--color-primary);
            font-size: 0.88rem;
        }

        .dashboard-stats {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .stat-card-large {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }

        .stat-icon-big {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            background: rgba(27, 59, 43, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .stat-info .stat-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
        }
        .stat-info .stat-unit {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text-weak);
            margin-left: 2px;
        }
        .stat-info .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin-top: 0.3rem;
        }

        .trend-mini {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
        }

        .trend-mini h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 0.8rem;
        }

        .trend-bars {
            display: flex;
            align-items: flex-end;
            gap: 0.5rem;
            height: 120px;
        }

        .trend-bar {
            flex: 1;
            background: var(--color-primary);
            border-radius: 6px 6px 0 0;
            transition: all var(--transition-base);
            min-height: 16px;
            opacity: 0.75;
        }

        .trend-bar:hover {
            opacity: 1;
            background: var(--color-cta);
        }

        .trend-bar:nth-child(odd) {
            background: var(--color-accent);
            opacity: 0.7;
        }
        .trend-bar:nth-child(odd):hover {
            opacity: 1;
            background: var(--color-cta);
        }

        .trend-labels {
            display: flex;
            gap: 0.5rem;
            margin-top: 0.5rem;
            font-size: 0.7rem;
            color: var(--color-text-weak);
            text-align: center;
        }
        .trend-labels span {
            flex: 1;
        }

        /* ========== NEWS ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 1rem 1.3rem;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            border-left: 3px solid transparent;
        }

        .news-item:hover {
            border-left-color: var(--color-cta);
            box-shadow: var(--shadow-card-hover);
            transform: translateX(3px);
        }

        .news-date-tag {
            flex-shrink: 0;
            background: var(--color-cta);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 0.6rem;
            border-radius: var(--radius-sm);
            white-space: nowrap;
            text-align: center;
            min-width: 54px;
        }

        .news-body {
            flex: 1;
        }

        .news-body h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: var(--color-text);
        }

        .news-body p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.5;
        }

        .news-more {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-cta);
            cursor: pointer;
            white-space: nowrap;
            align-self: center;
            transition: color var(--transition-base);
        }
        .news-more:hover {
            color: var(--color-cta-hover);
            text-decoration: underline;
        }

        /* ========== TOPICS ========== */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .topic-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .topic-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-card-hover);
        }

        .topic-card-image {
            width: 100%;
            aspect-ratio: 16/10;
            overflow: hidden;
            position: relative;
        }

        .topic-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .topic-card:hover .topic-card-image img {
            transform: scale(1.06);
        }

        .topic-card-body {
            padding: 1.3rem;
        }

        .topic-card-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--color-text);
        }

        .topic-card-body .topic-desc {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin-bottom: 0.8rem;
            line-height: 1.5;
        }

        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            margin-bottom: 0.8rem;
        }

        .topic-tag {
            font-size: 0.73rem;
            font-weight: 500;
            padding: 0.25rem 0.6rem;
            border-radius: 20px;
            background: rgba(27, 59, 43, 0.07);
            color: var(--color-primary);
        }

        .topic-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-cta);
            cursor: pointer;
        }
        .topic-link:hover {
            text-decoration: underline;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border-left: 3px solid var(--color-accent);
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .faq-item.open {
            border-left-color: var(--color-cta);
        }

        .faq-question {
            padding: 1.1rem 1.4rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-arrow {
            transition: transform var(--transition-base);
            font-size: 0.8rem;
            color: var(--color-text-weak);
            flex-shrink: 0;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--color-cta);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            background: var(--color-faq-bg);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 1rem 1.4rem 1.4rem;
        }

        .faq-answer p {
            margin: 0;
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.6rem;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: all var(--transition-base);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .testimonial-card .quote-mark {
            font-size: 3rem;
            color: var(--color-accent);
            line-height: 1;
            opacity: 0.5;
            margin-bottom: 0.5rem;
        }

        .testimonial-card p {
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        .testimonial-card .user-anon {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-primary);
        }

        .testimonial-card .user-tag {
            font-size: 0.75rem;
            color: var(--color-text-weak);
        }

        /* ========== PRICING ========== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.3rem;
            align-items: stretch;
        }

        .pricing-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.4rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 2px solid transparent;
            transition: all var(--transition-base);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .pricing-card.featured {
            border-color: var(--color-cta);
            box-shadow: 0 6px 28px rgba(224, 85, 61, 0.18);
            transform: scale(1.03);
            z-index: 1;
        }

        .pricing-card.featured .pricing-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-cta);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.3rem 0.9rem;
            border-radius: 20px;
            white-space: nowrap;
        }

        .pricing-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
            color: var(--color-text);
        }

        .pricing-card .price {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 0.3rem;
        }

        .pricing-card .price-period {
            font-size: 0.8rem;
            color: var(--color-text-weak);
            margin-bottom: 1rem;
        }

        .pricing-card .pricing-features {
            list-style: none;
            margin: 0 0 1.3rem;
            padding: 0;
            text-align: left;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            flex: 1;
        }

        .pricing-card .pricing-features li {
            padding: 0.35rem 0;
            border-bottom: 1px solid var(--color-border);
        }
        .pricing-card .pricing-features li:last-child {
            border-bottom: none;
        }
        .pricing-card .pricing-features li::before {
            content: '✓ ';
            color: var(--color-primary);
            font-weight: 700;
        }

        /* ========== CTA BOTTOM ========== */
        .cta-bottom-section {
            background: var(--color-dark-bg);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            text-align: center;
            color: #fff;
            padding: 4rem 1.5rem;
            border-radius: var(--radius-xl);
            overflow: hidden;
        }

        .cta-bottom-overlay {
            position: absolute;
            inset: 0;
            background: rgba(15, 35, 24, 0.82);
            z-index: 1;
        }

        .cta-bottom-content {
            position: relative;
            z-index: 2;
        }

        .cta-bottom-content h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            letter-spacing: -0.01em;
        }

        .cta-bottom-content p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 1.8rem;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-dark-bg);
            color: rgba(255, 255, 255, 0.8);
            padding: 3rem 1.5rem 1.5rem;
            font-size: 0.88rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            max-width: var(--max-width);
            margin: 0 auto 2rem;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

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

        .footer-col ul li {
            margin-bottom: 0.5rem;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.82rem;
            transition: color var(--transition-base);
            cursor: pointer;
        }

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

        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.8;
        }

        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
            margin-bottom: 0.8rem;
        }

        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.55);
            cursor: pointer;
            font-size: 0.78rem;
            transition: color var(--transition-base);
        }
        .footer-bottom-links a:hover {
            color: var(--color-accent-light);
        }

        .footer-friend-links {
            max-width: var(--max-width);
            margin: 0 auto 1.5rem;
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-friend-links span {
            margin: 0 0.5rem;
            cursor: default;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1200px) {
            .features-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-data-scroll {
                flex: 0 0 280px;
            }
            .deep-content-image {
                flex: 0 0 340px;
            }
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .dashboard-mixed {
                grid-template-columns: 1fr;
            }
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-content {
                flex-direction: column;
                gap: 2rem;
            }
            .hero-data-scroll {
                flex: 1 1 auto;
                width: 100%;
                max-height: 200px;
            }
            .deep-content-block {
                flex-direction: column;
                gap: 2rem;
            }
            .deep-content-block.reverse {
                flex-direction: column;
            }
            .deep-content-image {
                flex: 1 1 auto;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                gap: 0;
            }
            .nav-link {
                padding: 0.4rem 0.55rem;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-actions .nav-hot-tag {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .pricing-card.featured {
                transform: none;
            }
            .topics-grid {
                grid-template-columns: 1fr;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .hero-section {
                min-height: 65vh;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .cta-bottom-content h2 {
                font-size: 1.5rem;
            }
            .news-item {
                flex-wrap: wrap;
            }
            .news-date-tag {
                min-width: auto;
            }
        }

        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .hero-cta-group .btn {
                width: 100%;
            }
            .hero-section {
                min-height: auto;
                padding: 3rem 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .section-padding {
                padding: 2.5rem 0;
            }
            .dashboard-mixed {
                gap: 1rem;
            }
            .stat-card-large {
                flex-direction: column;
                text-align: center;
            }
            .nav-inner {
                height: 56px;
                padding: 0 1rem;
            }
            .nav-logo-text {
                font-size: 1.1rem;
            }
            .deep-content-text h2 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1b3b2b;
            --color-primary-deep: #0f2318;
            --color-primary-light: #2a5a3f;
            --color-accent: #c4a07a;
            --color-accent-light: #d9c4a8;
            --color-cta: #e0553d;
            --color-cta-hover: #c94a34;
            --color-cta-glow: rgba(224, 85, 61, 0.25);
            --color-bg: #faf7f2;
            --color-bg-light: #fefdfa;
            --color-bg-muted: #f5f2ed;
            --color-text: #1a1a1a;
            --color-text-secondary: #5c5c5c;
            --color-text-muted: #8a8a8a;
            --color-border: #e5ded5;
            --color-border-light: #efe9e0;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 4px 20px rgba(27, 59, 43, 0.10);
            --shadow-card-hover: 0 8px 30px rgba(27, 59, 43, 0.16);
            --shadow-btn: 0 4px 14px rgba(224, 85, 61, 0.22);
            --shadow-btn-hover: 0 6px 18px rgba(224, 85, 61, 0.30);
            --transition-fast: 0.2s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-stack: system-ui, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --container-max: 1280px;
            --section-gap: 5rem;
            --section-gap-sm: 3rem;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text);
            background: var(--color-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            outline: none;
        }

        input {
            font-family: inherit;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 35, 24, 0.97);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(196, 160, 122, 0.18);
            transition: all var(--transition-base);
            min-height: 64px;
            display: flex;
            align-items: center;
        }

        .nav-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.35rem;
            color: #faf7f2;
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-brand:hover {
            opacity: 0.85;
            color: #faf7f2;
        }
        .nav-logo-icon {
            font-size: 1.4rem;
            color: var(--color-accent);
            display: flex;
            align-items: center;
        }
        .nav-logo-text {
            font-weight: 700;
            letter-spacing: 0.03em;
        }

        .nav-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
        }
        .nav-links li {
            margin: 0;
        }
        .nav-link {
            display: inline-block;
            padding: 0.45rem 0.85rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: #d5cec4;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-link:hover {
            color: #faf7f2;
            background: rgba(196, 160, 122, 0.12);
        }
        .nav-link.active {
            color: #faf7f2;
            background: rgba(196, 160, 122, 0.20);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }
        .nav-hot-tag {
            font-size: 0.8rem;
            color: var(--color-accent-light);
            background: rgba(196, 160, 122, 0.10);
            padding: 0.35rem 0.7rem;
            border-radius: 20px;
            font-weight: 500;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-search-trigger {
            background: none;
            color: #d5cec4;
            font-size: 1.1rem;
            padding: 0.35rem;
            border-radius: 50%;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
        }
        .nav-search-trigger:hover {
            color: #faf7f2;
            background: rgba(196, 160, 122, 0.15);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            padding: 0.4rem;
            border-radius: var(--radius-sm);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: #d5cec4;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* ========== HERO ========== */
        .page-hero {
            position: relative;
            min-height: 42vh;
            display: flex;
            align-items: center;
            background: linear-gradient(170deg, #0f2318 0%, #1b3b2b 40%, #1a3626 100%);
            overflow: hidden;
            padding: 4rem 0;
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.35;
            mix-blend-mode: soft-light;
            z-index: 0;
        }
        .page-hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 40% 50%, rgba(196, 160, 122, 0.12) 0%, transparent 65%),
                linear-gradient(180deg, rgba(15, 35, 24, 0.55) 0%, rgba(27, 59, 43, 0.7) 100%);
            z-index: 1;
        }
        .page-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .page-hero-tag {
            display: inline-block;
            background: rgba(224, 85, 61, 0.22);
            color: #f0c4b8;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.35rem 1rem;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 1.25rem;
        }
        .page-hero h1 {
            font-size: 2.7rem;
            font-weight: 700;
            color: #faf7f2;
            letter-spacing: -0.02em;
            margin: 0 0 1rem;
            line-height: 1.25;
        }
        .page-hero-desc {
            font-size: 1.1rem;
            color: #d5cec4;
            max-width: 600px;
            margin: 0 auto 1.75rem;
            line-height: 1.7;
        }
        .page-hero-cta {
            display: inline-flex;
            gap: 0.75rem;
            flex-wrap: wrap;
            justify-content: center;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            cursor: pointer;
            white-space: nowrap;
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--color-cta);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: var(--color-cta-hover);
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #faf7f2;
            border: 1.5px solid rgba(196, 160, 122, 0.55);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            background: rgba(196, 160, 122, 0.10);
            color: #faf7f2;
        }
        .btn-sm {
            font-size: 0.82rem;
            padding: 0.45rem 1rem;
            border-radius: var(--radius-sm);
        }
        .btn-ghost {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-border);
        }
        .btn-ghost:hover {
            border-color: var(--color-primary);
            background: rgba(27, 59, 43, 0.04);
            color: var(--color-primary);
        }

        /* ========== MAIN SECTIONS ========== */
        main {
            padding: 0;
        }
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: var(--section-gap-sm) 0;
        }
        .section-bg-muted {
            background: var(--color-bg-muted);
        }
        .section-bg-deep {
            background: var(--color-primary-deep);
            color: #faf7f2;
        }
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 0.6rem;
            letter-spacing: -0.01em;
        }
        .section-header p {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-bg-deep .section-header h2 {
            color: #faf7f2;
        }
        .section-bg-deep .section-header p {
            color: #c5bfb5;
        }

        /* ========== RANKING TABLE ========== */
        .ranking-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            background: #fff;
            border: 1px solid var(--color-border-light);
        }
        .ranking-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
            font-size: 0.95rem;
        }
        .ranking-table thead th {
            background: var(--color-primary);
            color: #faf7f2;
            padding: 1rem 1.2rem;
            text-align: left;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
            border-bottom: 2px solid var(--color-accent);
        }
        .ranking-table thead th:first-child {
            border-radius: var(--radius-lg) 0 0 0;
            text-align: center;
            width: 60px;
        }
        .ranking-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }
        .ranking-table tbody td {
            padding: 0.95rem 1.2rem;
            border-bottom: 1px solid var(--color-border-light);
            vertical-align: middle;
            color: var(--color-text);
        }
        .ranking-table tbody tr {
            transition: background var(--transition-fast);
        }
        .ranking-table tbody tr:hover {
            background: #fdfaf6;
        }
        .ranking-table tbody tr:last-child td {
            border-bottom: none;
        }
        .ranking-table tbody tr:last-child td:first-child {
            border-radius: 0 0 0 var(--radius-lg);
        }
        .ranking-table tbody tr:last-child td:last-child {
            border-radius: 0 0 var(--radius-lg) 0;
        }
        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.9rem;
            color: #fff;
        }
        .rank-badge.top1 {
            background: linear-gradient(135deg, #f5a623, #e0951a);
            box-shadow: 0 2px 10px rgba(245, 166, 35, 0.35);
            font-size: 1rem;
            width: 36px;
            height: 36px;
        }
        .rank-badge.top2 {
            background: linear-gradient(135deg, #b0b8c1, #8e99a1);
            box-shadow: 0 2px 8px rgba(140, 150, 160, 0.3);
        }
        .rank-badge.top3 {
            background: linear-gradient(135deg, #c47f5a, #a8683f);
            box-shadow: 0 2px 8px rgba(180, 120, 85, 0.3);
        }
        .rank-badge.normal {
            background: #7a8a80;
            font-size: 0.82rem;
        }
        .team-cell {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            font-weight: 600;
            white-space: nowrap;
        }
        .team-cell-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-bg-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .heat-bar-wrap {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            min-width: 140px;
        }
        .heat-bar {
            flex: 1;
            height: 10px;
            background: #e8e2d9;
            border-radius: 5px;
            overflow: hidden;
        }
        .heat-bar-fill {
            height: 100%;
            border-radius: 5px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-cta));
            transition: width var(--transition-slow);
        }
        .heat-value {
            font-weight: 700;
            color: var(--color-primary);
            font-size: 0.9rem;
            min-width: 42px;
            text-align: right;
        }
        .topic-count {
            font-weight: 600;
            color: var(--color-text-secondary);
            font-size: 0.9rem;
        }
        .trend-up {
            color: #2e7d32;
            font-weight: 600;
            font-size: 0.85rem;
        }
        .trend-stable {
            color: #8a8a8a;
            font-weight: 500;
            font-size: 0.85rem;
        }
        .trend-hot {
            color: #e0553d;
            font-weight: 600;
            font-size: 0.85rem;
        }

        /* ========== ANALYSIS CARDS ========== */
        .analysis-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: start;
        }
        .analysis-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 2rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
        }
        .analysis-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 0.8rem;
            letter-spacing: -0.01em;
        }
        .analysis-card p {
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0 0 1rem;
        }
        .analysis-card p:last-child {
            margin-bottom: 0;
        }
        .insight-badge {
            display: inline-block;
            background: rgba(27, 59, 43, 0.07);
            color: var(--color-primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.3rem 0.7rem;
            border-radius: var(--radius-sm);
            margin-right: 0.4rem;
            margin-bottom: 0.4rem;
            letter-spacing: 0.02em;
        }

        /* ========== COMPARISON CARDS ========== */
        .comparison-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .comparison-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: all var(--transition-base);
        }
        .comparison-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .comparison-card-rank {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1;
            margin-bottom: 0.4rem;
            letter-spacing: -0.02em;
        }
        .comparison-card-name {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-primary);
            margin-bottom: 0.5rem;
        }
        .comparison-card-stat {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .comparison-card-stat strong {
            color: var(--color-text);
            font-weight: 700;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: 0 1px 4px rgba(27, 59, 43, 0.04);
        }
        .faq-item.open {
            box-shadow: var(--shadow-card);
            border-color: var(--color-accent);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            cursor: pointer;
            transition: color var(--transition-fast);
            border-left: 3px solid var(--color-accent);
            letter-spacing: 0.01em;
        }
        .faq-item.open .faq-question {
            border-left-color: var(--color-cta);
            color: var(--color-primary);
        }
        .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            color: var(--color-accent);
            font-size: 0.9rem;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--color-cta);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            background: var(--color-bg-muted);
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
        }
        .faq-answer-inner {
            padding: 0 1.5rem 1.4rem 1.5rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary-deep);
            text-align: center;
            padding: 4rem 1.5rem;
            border-radius: var(--radius-xl);
            margin: 0 1.5rem;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(196, 160, 122, 0.10) 0%, transparent 70%);
            z-index: 0;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #faf7f2;
            margin: 0 0 0.8rem;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            color: #d5cec4;
            max-width: 500px;
            margin: 0 auto 1.75rem;
            font-size: 1.05rem;
            line-height: 1.7;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary-deep);
            color: #d5cec4;
            padding: 3.5rem 1.5rem 2rem;
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .footer-grid {
            max-width: var(--container-max);
            margin: 0 auto 2.5rem;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        .footer-col h4 {
            color: #faf7f2;
            font-size: 0.95rem;
            font-weight: 700;
            margin: 0 0 0.8rem;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.35rem;
        }
        .footer-col ul li a {
            color: #b5afa6;
            transition: color var(--transition-fast);
            cursor: pointer;
        }
        .footer-col ul li a:hover {
            color: #faf7f2;
        }
        .footer-friend-links {
            max-width: var(--container-max);
            margin: 0 auto 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(196, 160, 122, 0.2);
            font-size: 0.82rem;
            color: #9a948b;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            align-items: center;
        }
        .footer-friend-links span {
            color: #b5afa6;
            cursor: default;
            margin-right: 0.3rem;
        }
        .footer-bottom {
            max-width: var(--container-max);
            margin: 0 auto;
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(196, 160, 122, 0.2);
            font-size: 0.8rem;
            color: #8a857d;
            line-height: 2;
        }
        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.5rem 1.2rem;
            margin-bottom: 0.5rem;
        }
        .footer-bottom-links a {
            color: #b5afa6;
            transition: color var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }
        .footer-bottom-links a:hover {
            color: #faf7f2;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .analysis-grid {
                grid-template-columns: 1fr;
            }
            .comparison-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                gap: 0;
            }
            .nav-link {
                padding: 0.4rem 0.6rem;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(15, 35, 24, 0.98);
                flex-direction: column;
                padding: 1rem 1.5rem;
                gap: 0.25rem;
                border-bottom: 2px solid rgba(196, 160, 122, 0.3);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                padding: 0.6rem 1rem;
                font-size: 0.95rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-toggle {
                display: flex;
            }
            .nav-hot-tag {
                display: none;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero-desc {
                font-size: 0.95rem;
            }
            .comparison-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section {
                padding: var(--section-gap-sm) 0;
            }
            .cta-section {
                margin: 0 0.75rem;
                padding: 2.5rem 1rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .analysis-card {
                padding: 1.25rem;
            }
            .btn {
                padding: 0.6rem 1.2rem;
                font-size: 0.88rem;
            }
            .ranking-table {
                min-width: 600px;
                font-size: 0.82rem;
            }
            .ranking-table thead th,
            .ranking-table tbody td {
                padding: 0.7rem 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero {
                min-height: 32vh;
                padding: 2.5rem 0;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .page-hero-cta {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .footer-bottom-links {
                gap: 0.3rem 0.8rem;
            }
            .heat-bar-wrap {
                min-width: 100px;
            }
            .nav-inner {
                gap: 0.75rem;
            }
            .nav-brand {
                font-size: 1.15rem;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1b3b2b;
            --color-primary-dark: #0f2318;
            --color-accent: #c4a07a;
            --color-cta: #e0553d;
            --color-cta-hover: #c74a34;
            --color-bg-light: #faf7f2;
            --color-bg-panel: #f5f2ed;
            --color-text-main: #1a1a1a;
            --color-text-sub: #5c5c5c;
            --color-text-weak: #8a8a8a;
            --color-white: #ffffff;
            --color-border: #e8e3da;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 2px 12px rgba(27, 59, 43, 0.07);
            --shadow-card-hover: 0 6px 24px rgba(27, 59, 43, 0.13);
            --shadow-btn: 0 4px 14px rgba(224, 85, 61, 0.22);
            --shadow-btn-hover: 0 6px 22px rgba(224, 85, 61, 0.35);
            --transition-fast: 0.2s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-heading: system-ui, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --font-body: system-ui, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --max-width: 1280px;
            --nav-height: 68px;
            --nav-height-scrolled: 56px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text-main);
            background-color: var(--color-bg-light);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            outline: none;
        }

        button:focus-visible,
        a:focus-visible {
            outline: 3px solid var(--color-cta);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
            outline: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            margin: 0;
            line-height: 1.3;
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--color-primary);
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 600;
            letter-spacing: -0.01em;
            color: var(--color-primary);
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--color-text-main);
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-main);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-normal);
            height: var(--nav-height);
        }
        .site-nav.scrolled {
            background: rgba(15, 35, 24, 0.94);
            border-bottom-color: transparent;
            height: var(--nav-height-scrolled);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.18);
        }
        .site-nav.scrolled .nav-logo-text,
        .site-nav.scrolled .nav-link,
        .site-nav.scrolled .nav-hot-tag,
        .site-nav.scrolled .nav-search-trigger {
            color: #f0ece5;
        }
        .site-nav.scrolled .nav-link:hover,
        .site-nav.scrolled .nav-link.active {
            color: var(--color-accent);
        }
        .site-nav.scrolled .nav-toggle span {
            background: #f0ece5;
        }
        .site-nav.scrolled .nav-logo-icon i {
            color: var(--color-accent);
        }

        .nav-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 0.55rem;
            text-decoration: none;
            flex-shrink: 0;
            z-index: 1001;
        }
        .nav-logo-icon {
            font-size: 1.5rem;
            color: var(--color-cta);
            display: flex;
            align-items: center;
            transition: color var(--transition-fast);
        }
        .nav-logo-text {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            transition: color var(--transition-fast);
        }
        .nav-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-link {
            display: inline-block;
            padding: 0.45rem 0.85rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-sub);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(27, 59, 43, 0.05);
        }
        .nav-link.active {
            color: var(--color-cta);
            font-weight: 600;
            background: rgba(224, 85, 61, 0.07);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
            z-index: 1001;
        }
        .nav-hot-tag {
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--color-text-sub);
            padding: 0.35rem 0.7rem;
            background: var(--color-bg-panel);
            border-radius: 20px;
            cursor: default;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .site-nav.scrolled .nav-hot-tag {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-search-trigger {
            font-size: 1.05rem;
            color: var(--color-text-sub);
            padding: 0.4rem;
            border-radius: 50%;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
        }
        .nav-search-trigger:hover {
            color: var(--color-cta);
            background: rgba(224, 85, 61, 0.06);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 0.5rem;
            z-index: 1001;
            background: none;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .site-nav.scrolled .nav-toggle span {
            background: #f0ece5;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* Mobile nav panel */
        @media (max-width: 1024px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--color-primary-dark);
                flex-direction: column;
                align-items: flex-start;
                padding: 5rem 1.8rem 2rem;
                gap: 0.15rem;
                transition: right var(--transition-slow);
                z-index: 999;
                box-shadow: -4px 0 30px rgba(0, 0, 0, 0.3);
            }
            .nav-links.open {
                right: 0;
            }
            .nav-link {
                color: #d5cfc4;
                font-size: 1rem;
                padding: 0.65rem 0.5rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-link:hover {
                color: #fff;
                background: rgba(255, 255, 255, 0.08);
            }
            .nav-link.active {
                color: var(--color-accent);
                background: rgba(196, 160, 122, 0.12);
            }
            .nav-toggle {
                display: flex;
            }
            .nav-hot-tag {
                display: none;
            }
        }
        @media (max-width: 640px) {
            .nav-links {
                width: 100%;
                right: -100%;
            }
            .nav-logo-text {
                font-size: 1.15rem;
            }
        }

        /* ========== PAGE HERO ========== */
        .page-hero {
            position: relative;
            padding: 7rem 0 4rem;
            background: linear-gradient(170deg, #0f2318 0%, #1b3b2b 40%, #1a3528 100%);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.22;
            z-index: 0;
            animation: heroBgSlow 30s ease-in-out infinite alternate;
        }
        @keyframes heroBgSlow {
            0% {
                transform: scale(1);
            }
            100% {
                transform: scale(1.06);
            }
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg-light), transparent);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero-content {
            max-width: 700px;
        }
        .page-hero-badge {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(196, 160, 122, 0.15);
            padding: 0.35rem 1rem;
            border-radius: 20px;
            margin-bottom: 1.2rem;
            letter-spacing: 0.03em;
            border: 1px solid rgba(196, 160, 122, 0.25);
        }
        .page-hero h1 {
            color: #faf7f2;
            font-size: 2.8rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .page-hero .hero-subtitle {
            color: #c4bfb2;
            font-size: 1.1rem;
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 520px;
        }
        .page-hero-stats {
            display: flex;
            gap: 2.5rem;
            flex-wrap: wrap;
        }
        .page-hero-stat {
            text-align: left;
        }
        .page-hero-stat .stat-number {
            display: block;
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1;
        }
        .page-hero-stat .stat-label {
            font-size: 0.8rem;
            color: #a09888;
            margin-top: 0.3rem;
        }

        @media (max-width: 1024px) {
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .page-hero {
                min-height: 340px;
                padding: 6rem 0 3rem;
            }
        }
        @media (max-width: 640px) {
            .page-hero h1 {
                font-size: 1.75rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .page-hero {
                min-height: 300px;
                padding: 5.5rem 0 2.5rem;
            }
            .page-hero-stats {
                gap: 1.5rem;
            }
            .page-hero-stat .stat-number {
                font-size: 1.5rem;
            }
        }

        /* ========== SECTION SPACING ========== */
        .section {
            padding: 3.5rem 0;
        }
        .section-sm {
            padding: 2rem 0;
        }
        .section-lg {
            padding: 5rem 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-cta);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 0.6rem;
        }
        .section-title {
            margin-bottom: 1rem;
            color: var(--color-primary);
        }
        .section-desc {
            color: var(--color-text-sub);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 620px;
            margin-bottom: 2rem;
        }

        /* ========== MAIN LAYOUT 2-COL ========== */
        .two-col-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 2.5rem;
            align-items: start;
        }
        @media (max-width: 1024px) {
            .two-col-layout {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        /* ========== CONTENT CARD / PROSE ========== */
        .content-card {
            background: var(--color-white);
            border-radius: var(--radius-xl);
            padding: 2.2rem 2.5rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            margin-bottom: 2rem;
        }
        .content-card h2 {
            margin-bottom: 1.2rem;
        }
        .content-card h3 {
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            font-size: 1.25rem;
        }
        .content-card p {
            color: var(--color-text-sub);
            line-height: 1.85;
            margin-bottom: 1rem;
        }
        .content-card .inline-img {
            border-radius: var(--radius-lg);
            margin: 1.5rem 0;
            width: 100%;
            box-shadow: var(--shadow-card);
        }
        .content-card blockquote {
            border-left: 4px solid var(--color-accent);
            margin: 1.5rem 0;
            padding: 1rem 1.5rem;
            background: var(--color-bg-panel);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--color-text-sub);
            font-style: italic;
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .content-card ul,
        .content-card ol {
            color: var(--color-text-sub);
            line-height: 1.85;
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
        .content-card li {
            margin-bottom: 0.4rem;
        }
        @media (max-width: 640px) {
            .content-card {
                padding: 1.5rem 1.2rem;
            }
        }

        /* ========== SIDEBAR ========== */
        .sidebar-card {
            background: var(--color-white);
            border-radius: var(--radius-xl);
            padding: 1.6rem 1.8rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            margin-bottom: 1.5rem;
        }
        .sidebar-card h4 {
            margin-bottom: 1rem;
            font-size: 1rem;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar-card h4 i {
            color: var(--color-cta);
            font-size: 0.9rem;
        }
        .sidebar-stat-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.7rem 0;
            border-bottom: 1px solid var(--color-border);
            font-size: 0.9rem;
        }
        .sidebar-stat-item:last-child {
            border-bottom: none;
        }
        .sidebar-stat-item .stat-key {
            color: var(--color-text-sub);
        }
        .sidebar-stat-item .stat-val {
            font-weight: 600;
            color: var(--color-primary);
            font-size: 0.95rem;
        }
        .sidebar-stat-item .stat-val.highlight {
            color: var(--color-cta);
        }
        .sidebar-tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 0.5rem;
        }
        .sidebar-tag {
            font-size: 0.78rem;
            font-weight: 500;
            padding: 0.3rem 0.75rem;
            border-radius: 20px;
            background: var(--color-bg-panel);
            color: var(--color-text-sub);
            transition: all var(--transition-fast);
        }
        .sidebar-tag:hover {
            background: rgba(27, 59, 43, 0.1);
            color: var(--color-primary);
        }
        .sidebar-related-item {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            padding: 0.7rem 0;
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .sidebar-related-item:last-child {
            border-bottom: none;
        }
        .sidebar-related-item:hover .related-title {
            color: var(--color-cta);
        }
        .sidebar-related-item .related-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
            margin-top: 0.5rem;
        }
        .sidebar-related-item .related-title {
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--color-text-main);
            line-height: 1.45;
            transition: color var(--transition-fast);
        }

        /* ========== RELATION GRAPH SECTION ========== */
        .relation-graph-area {
            background: var(--color-white);
            border-radius: var(--radius-xl);
            padding: 2.5rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            margin-bottom: 2rem;
            overflow: hidden;
        }
        .relation-graph-area h3 {
            text-align: center;
            margin-bottom: 2rem;
            color: var(--color-primary);
        }
        .graph-visual {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 1.5rem 2.5rem;
            position: relative;
            padding: 1rem 0;
        }
        .graph-node {
            text-align: center;
            padding: 1.2rem 1.5rem;
            background: var(--color-bg-light);
            border-radius: var(--radius-lg);
            border: 2px solid var(--color-border);
            min-width: 130px;
            transition: all var(--transition-normal);
            position: relative;
            cursor: default;
        }
        .graph-node:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .graph-node.central {
            background: var(--color-primary);
            color: #faf7f2;
            border-color: var(--color-primary);
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 4px 20px rgba(27, 59, 43, 0.3);
        }
        .graph-node.central:hover {
            border-color: var(--color-accent);
            box-shadow: 0 6px 28px rgba(27, 59, 43, 0.4);
        }
        .graph-node .node-icon {
            font-size: 1.6rem;
            margin-bottom: 0.4rem;
            display: block;
            color: var(--color-cta);
        }
        .graph-node.central .node-icon {
            color: var(--color-accent);
        }
        .graph-node .node-label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-text-main);
        }
        .graph-node.central .node-label {
            color: #faf7f2;
        }
        .graph-connector {
            display: flex;
            align-items: center;
            color: var(--color-accent);
            font-size: 1.2rem;
            font-weight: 700;
        }
        @media (max-width: 768px) {
            .graph-visual {
                flex-direction: column;
                gap: 0.8rem;
            }
            .graph-connector {
                transform: rotate(90deg);
            }
            .graph-node {
                min-width: 100%;
                max-width: 280px;
            }
        }

        /* ========== COMPARISON TABLE ========== */
        .comparison-table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
            -webkit-overflow-scrolling: touch;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
            min-width: 600px;
        }
        .comparison-table thead th {
            background: var(--color-primary);
            color: #faf7f2;
            padding: 0.85rem 1rem;
            font-weight: 600;
            text-align: left;
            border: none;
        }
        .comparison-table thead th:first-child {
            border-radius: var(--radius-md) 0 0 0;
        }
        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-md) 0 0;
        }
        .comparison-table tbody td {
            padding: 0.8rem 1rem;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text-sub);
            background: var(--color-white);
        }
        .comparison-table tbody tr:hover td {
            background: var(--color-bg-panel);
        }
        .comparison-table tbody tr:last-child td:first-child {
            border-radius: 0 0 0 var(--radius-md);
        }
        .comparison-table tbody tr:last-child td:last-child {
            border-radius: 0 0 var(--radius-md) 0;
        }
        .comparison-table .highlight-cell {
            color: var(--color-cta);
            font-weight: 600;
        }

        /* ========== FAQ ========== */
        .faq-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .faq-item {
            margin-bottom: 0.6rem;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
        }
        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.2rem 1.5rem;
            cursor: pointer;
            width: 100%;
            text-align: left;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text-main);
            background: none;
            border: none;
            font-family: inherit;
            transition: all var(--transition-fast);
            position: relative;
        }
        .faq-question .faq-indicator {
            width: 3px;
            min-width: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            transition: all var(--transition-fast);
            align-self: stretch;
            min-height: 24px;
        }
        .faq-item.open .faq-indicator {
            background: var(--color-cta);
        }
        .faq-question .faq-text {
            flex: 1;
            line-height: 1.5;
        }
        .faq-question .faq-arrow {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
            margin-top: 0.2rem;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--color-cta);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            background: var(--color-bg-panel);
        }
        .faq-item.open .faq-answer {
            max-height: 600px;
        }
        .faq-answer-inner {
            padding: 0 1.5rem 1.3rem 2.8rem;
            color: var(--color-text-sub);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        @media (max-width: 640px) {
            .faq-question {
                padding: 1rem 1.2rem;
                font-size: 0.9rem;
            }
            .faq-answer-inner {
                padding: 0 1.2rem 1rem 2.2rem;
                font-size: 0.85rem;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(160deg, #1b3b2b 0%, #0f2318 100%);
            border-radius: var(--radius-xl);
            padding: 3rem 2.5rem;
            text-align: center;
            color: #faf7f2;
            margin: 2rem 0 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(196, 160, 122, 0.08);
            z-index: 0;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -30px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(224, 85, 61, 0.06);
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h3 {
            color: #faf7f2;
            font-size: 1.6rem;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            color: #c4bfb2;
            max-width: 500px;
            margin: 0 auto 1.8rem;
            line-height: 1.7;
        }
        .btn-cta {
            display: inline-block;
            padding: 0.85rem 2.2rem;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            background: var(--color-cta);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-btn);
            text-decoration: none;
            border: none;
            cursor: pointer;
            font-family: inherit;
        }
        .btn-cta:hover {
            background: var(--color-cta-hover);
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-ghost-light {
            display: inline-block;
            padding: 0.75rem 2rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: #faf7f2;
            background: transparent;
            border: 2px solid rgba(250, 247, 242, 0.4);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
            font-family: inherit;
            margin-left: 0.8rem;
        }
        .btn-ghost-light:hover {
            border-color: #faf7f2;
            background: rgba(250, 247, 242, 0.06);
            color: #faf7f2;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 2.2rem 1.5rem;
            }
            .cta-section h3 {
                font-size: 1.3rem;
            }
            .btn-ghost-light {
                margin-left: 0;
                margin-top: 0.6rem;
                display: block;
            }
            .btn-cta {
                display: block;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary-dark);
            color: #d5cfc4;
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            max-width: var(--max-width);
            margin: 0 auto 2rem;
        }
        .footer-col h4 {
            color: #faf7f2;
            font-size: 1rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            color: #b0a89a;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
            cursor: pointer;
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-friend-links {
            max-width: var(--max-width);
            margin: 0 auto 2rem;
            text-align: center;
            color: #8a8275;
            font-size: 0.82rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.6rem 1.2rem;
        }
        .footer-friend-links span {
            color: #a09888;
            cursor: default;
            transition: color var(--transition-fast);
        }
        .footer-friend-links span:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            color: #8a8275;
            font-size: 0.78rem;
            line-height: 2;
        }
        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.8rem 1.5rem;
            margin-bottom: 0.6rem;
        }
        .footer-bottom-links a {
            color: #a09888;
            font-size: 0.78rem;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--color-accent);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.2rem;
            }
            .site-footer {
                padding: 2rem 1rem 1rem;
            }
        }

        /* ========== OVERRIDE FOUNDATION ========== */
        .foundation-mq .row {
            max-width: none;
        }
        .row {
            margin-left: 0;
            margin-right: 0;
        }
        .row .columns,
        .row .column {
            padding-left: 0.75rem;
            padding-right: 0.75rem;
        }

/* roulang page: category1 */
:root {
            --color-primary: #1b3b2b;
            --color-primary-dark: #0f2318;
            --color-accent: #c4a07a;
            --color-accent-light: #d9bfa3;
            --color-cta: #e0553d;
            --color-cta-hover: #c94a33;
            --color-cta-glow: rgba(224, 85, 61, 0.25);
            --color-bg-light: #faf7f2;
            --color-bg-warm: #f5f2ed;
            --color-bg-dark: #0f2318;
            --color-text-primary: #1a1a1a;
            --color-text-secondary: #5c5c5c;
            --color-text-weak: #8a8a8a;
            --color-text-light: #faf7f2;
            --color-border: #e0d8cf;
            --color-border-light: #ede6dd;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 2px 12px rgba(27, 59, 43, 0.07);
            --shadow-card-hover: 0 4px 20px rgba(27, 59, 43, 0.12);
            --shadow-btn: 0 4px 14px rgba(224, 85, 61, 0.20);
            --shadow-btn-hover: 0 6px 18px rgba(224, 85, 61, 0.30);
            --transition-fast: 0.2s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-stack: system-ui, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --max-width: 1280px;
            --nav-height: 68px;
            --nav-height-scrolled: 56px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text-primary);
            background-color: var(--color-bg-light);
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--color-cta);
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            outline: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-cta);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            line-height: 1.3;
            color: var(--color-primary);
        }

        h1 {
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            font-weight: 600;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
        }
        p {
            margin: 0 0 1rem;
            color: var(--color-text-secondary);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            height: var(--nav-height);
        }
        .site-nav.scrolled {
            background: rgba(15, 35, 24, 0.95);
            border-bottom-color: transparent;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
            height: var(--nav-height-scrolled);
        }
        .site-nav.scrolled .nav-brand,
        .site-nav.scrolled .nav-link,
        .site-nav.scrolled .nav-hot-tag,
        .site-nav.scrolled .nav-search-trigger {
            color: var(--color-text-light);
        }
        .site-nav.scrolled .nav-link.active {
            color: var(--color-accent);
        }
        .site-nav.scrolled .nav-link:hover {
            color: var(--color-cta);
        }
        .site-nav.scrolled .nav-toggle span {
            background-color: var(--color-text-light);
        }
        .site-nav.scrolled .nav-logo-icon {
            color: var(--color-accent);
        }
        .nav-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 1.5rem;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .nav-brand:hover {
            color: var(--color-primary);
            opacity: 0.85;
        }
        .nav-logo-icon {
            font-size: 1.35rem;
            color: var(--color-cta);
            transition: color var(--transition-fast);
        }
        .nav-logo-text {
            letter-spacing: 0.02em;
        }
        .nav-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 0.15rem;
            flex-wrap: nowrap;
        }
        .nav-links li {
            margin: 0;
        }
        .nav-link {
            display: block;
            padding: 0.45rem 0.85rem;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-link:hover {
            color: var(--color-cta);
            background: rgba(224, 85, 61, 0.05);
        }
        .nav-link.active {
            color: var(--color-cta);
            font-weight: 600;
            background: rgba(224, 85, 61, 0.08);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }
        .nav-hot-tag {
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-bg-warm);
            padding: 0.35rem 0.75rem;
            border-radius: 20px;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-hot-tag:hover {
            background: #fce8e4;
            color: var(--color-cta);
        }
        .nav-search-trigger {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            background: var(--color-bg-warm);
            transition: all var(--transition-fast);
            font-size: 0.95rem;
            flex-shrink: 0;
        }
        .nav-search-trigger:hover {
            background: var(--color-cta);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            cursor: pointer;
            background: transparent;
            border: none;
            width: 36px;
            height: 30px;
            justify-content: center;
            align-items: center;
            flex-shrink: 0;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
            transform-origin: center;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 1024px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(15, 35, 24, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 2rem 1.5rem;
                gap: 0.3rem;
                transform: translateX(100%);
                transition: transform var(--transition-base);
                z-index: 999;
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-link {
                color: var(--color-text-light);
                font-size: 1.05rem;
                padding: 0.8rem 1rem;
                border-radius: var(--radius-md);
            }
            .nav-link.active {
                color: var(--color-accent);
                background: rgba(196, 160, 122, 0.15);
            }
            .nav-link:hover {
                color: var(--color-cta);
                background: rgba(224, 85, 61, 0.12);
            }
            .nav-toggle {
                display: flex;
            }
            .nav-hot-tag {
                display: none;
            }
            .site-nav.scrolled .nav-links {
                background: rgba(15, 35, 24, 0.98);
            }
        }
        @media (max-width: 640px) {
            .nav-inner {
                padding: 0 1rem;
                gap: 0.75rem;
            }
            .nav-brand {
                font-size: 1.1rem;
            }
            .nav-logo-icon {
                font-size: 1.15rem;
            }
            .nav-search-trigger {
                width: 34px;
                height: 34px;
                font-size: 0.85rem;
            }
        }

        /* ========== PAGE HERO ========== */
        .page-hero {
            margin-top: var(--nav-height);
            background: var(--color-bg-dark);
            background-image: linear-gradient(160deg, rgba(15, 35, 24, 0.88) 0%, rgba(27, 59, 43, 0.82) 50%, rgba(15, 35, 24, 0.9) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: 5rem 0 4rem;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg-light), transparent);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero-content {
            max-width: 700px;
        }
        .page-hero-badge {
            display: inline-block;
            background: rgba(196, 160, 122, 0.2);
            color: var(--color-accent-light);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.35rem 0.9rem;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 1.25rem;
            border: 1px solid rgba(196, 160, 122, 0.25);
        }
        .page-hero h1 {
            color: #ffffff;
            font-size: 3rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .page-hero .hero-subtitle {
            color: rgba(255, 255, 255, 0.78);
            font-size: 1.1rem;
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 540px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.75rem 1.6rem;
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            cursor: pointer;
            border: none;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-cta);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: var(--color-cta-hover);
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-ghost {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.45);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-sm {
            font-size: 0.8rem;
            padding: 0.45rem 1rem;
            border-radius: var(--radius-sm);
        }
        .btn-xs {
            font-size: 0.75rem;
            padding: 0.3rem 0.7rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 3.5rem 0 2.5rem;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .page-hero .hero-subtitle {
                font-size: 1rem;
            }
        }
        @media (max-width: 640px) {
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.9rem;
            }
        }

        /* ========== SECTION SPACING ========== */
        .section {
            padding: 4rem 0;
        }
        .section-sm {
            padding: 2.5rem 0;
        }
        .section-lg {
            padding: 5rem 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 0.5rem;
        }
        .section-lead {
            text-align: center;
            color: var(--color-text-weak);
            font-size: 0.95rem;
            max-width: 600px;
            margin: 0 auto 2.5rem;
        }

        /* ========== HIGHLIGHTS STRIP ========== */
        .highlights-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .highlight-item {
            text-align: center;
            padding: 1.75rem 1rem;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
        }
        .highlight-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }
        .highlight-icon {
            font-size: 2rem;
            color: var(--color-cta);
            margin-bottom: 0.75rem;
        }
        .highlight-item h3 {
            font-size: 1.05rem;
            margin-bottom: 0.35rem;
            color: var(--color-primary);
        }
        .highlight-item p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            margin: 0;
        }

        @media (max-width: 1024px) {
            .highlights-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
        }
        @media (max-width: 640px) {
            .highlights-strip {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .highlight-item {
                padding: 1.25rem 0.75rem;
            }
            .highlight-icon {
                font-size: 1.5rem;
            }
            .highlight-item h3 {
                font-size: 0.9rem;
            }
            .highlight-item p {
                font-size: 0.78rem;
            }
        }

        /* ========== FILTER TOOLBAR ========== */
        .filter-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            padding: 1rem 1.25rem;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            margin-bottom: 2rem;
            border: 1px solid var(--color-border-light);
        }
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .filter-tag {
            font-size: 0.8rem;
            font-weight: 500;
            padding: 0.4rem 0.85rem;
            border-radius: 20px;
            background: var(--color-bg-warm);
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .filter-tag:hover {
            background: #fce8e4;
            color: var(--color-cta);
        }
        .filter-tag.active {
            background: var(--color-cta);
            color: #fff;
            border-color: var(--color-cta);
            font-weight: 600;
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            flex-shrink: 0;
        }
        .filter-sort select {
            padding: 0.4rem 2rem 0.4rem 0.75rem;
            font-size: 0.85rem;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: var(--color-bg-light);
            color: var(--color-text-primary);
            cursor: pointer;
            font-family: inherit;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%235c5c5c'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 0.6rem center;
            transition: border-color var(--transition-fast);
        }
        .filter-sort select:focus {
            border-color: var(--color-primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(27, 59, 43, 0.08);
        }

        @media (max-width: 640px) {
            .filter-toolbar {
                flex-direction: column;
                align-items: stretch;
                gap: 0.75rem;
                padding: 0.85rem 1rem;
            }
            .filter-tags {
                gap: 0.4rem;
            }
            .filter-tag {
                font-size: 0.75rem;
                padding: 0.3rem 0.65rem;
            }
            .filter-sort {
                justify-content: flex-end;
            }
        }

        /* ========== DATA CARD LIST ========== */
        .data-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        .data-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: row;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .data-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }
        .data-card-image {
            width: 40%;
            min-width: 160px;
            flex-shrink: 0;
            position: relative;
            overflow: hidden;
        }
        .data-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .data-card:hover .data-card-image img {
            transform: scale(1.05);
        }
        .data-card-image .card-tag-overlay {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: var(--color-cta);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.25rem 0.6rem;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            z-index: 2;
        }
        .data-card-body {
            padding: 1.25rem 1.25rem 1rem;
            display: flex;
            flex-direction: column;
            flex: 1;
            min-width: 0;
        }
        .data-card-meta {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 0.5rem;
            flex-wrap: wrap;
        }
        .data-card-date {
            font-size: 0.75rem;
            color: var(--color-text-weak);
            letter-spacing: 0.02em;
        }
        .data-card-tag {
            font-size: 0.7rem;
            font-weight: 500;
            padding: 0.2rem 0.55rem;
            border-radius: var(--radius-sm);
            background: rgba(196, 160, 122, 0.15);
            color: #8b6d4f;
            letter-spacing: 0.02em;
        }
        .data-card h3 {
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
            line-height: 1.4;
            color: var(--color-primary);
        }
        .data-card p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin-bottom: 0.75rem;
            line-height: 1.55;
            flex: 1;
        }
        .data-card-link {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-cta);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: gap var(--transition-fast);
        }
        .data-card-link:hover {
            gap: 0.5rem;
            color: var(--color-cta-hover);
        }
        .data-card-link i {
            font-size: 0.7rem;
        }

        @media (max-width: 900px) {
            .data-card-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .data-card {
                flex-direction: column;
            }
            .data-card-image {
                width: 100%;
                min-width: auto;
                height: 200px;
            }
        }
        @media (max-width: 640px) {
            .data-card-image {
                height: 170px;
            }
            .data-card-body {
                padding: 1rem;
            }
            .data-card h3 {
                font-size: 0.95rem;
            }
            .data-card p {
                font-size: 0.8rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            margin-bottom: 0.75rem;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .faq-item.open {
            border-left: 3px solid var(--color-cta);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.25rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            gap: 1rem;
            transition: color var(--transition-fast);
            user-select: none;
            position: relative;
            border-left: 3px solid var(--color-accent);
        }
        .faq-item.open .faq-question {
            border-left-color: var(--color-cta);
            color: var(--color-cta);
        }
        .faq-question:hover {
            background: var(--color-bg-warm);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--color-bg-warm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-base);
        }
        .faq-item.open .faq-icon {
            background: var(--color-cta);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            background: var(--color-bg-warm);
        }
        .faq-item.open .faq-answer {
            max-height: 600px;
        }
        .faq-answer-inner {
            padding: 0 1.25rem 1.25rem;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-bg-dark);
            background-image: linear-gradient(135deg, rgba(15, 35, 24, 0.94) 0%, rgba(27, 59, 43, 0.9) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 4rem 0;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: 2rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 500px;
            margin: 0 auto 1.75rem;
            font-size: 1rem;
        }
        .cta-section .btn-primary {
            font-size: 1rem;
            padding: 0.85rem 2rem;
        }

        @media (max-width: 640px) {
            .cta-section {
                padding: 2.5rem 1rem;
                margin: 1.5rem 0;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem 2rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.45rem;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
            cursor: pointer;
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-friend-links {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 1.25rem 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .footer-friend-links span {
            cursor: pointer;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }
        .footer-friend-links span:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 1.5rem 1.5rem 0;
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.9;
        }
        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
            margin-bottom: 0.75rem;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.78rem;
            transition: color var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }
        .footer-bottom-links a:hover {
            color: var(--color-accent-light);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .footer-col h4 {
                font-size: 0.85rem;
            }
            .footer-col ul li a {
                font-size: 0.78rem;
            }
            .footer-bottom {
                font-size: 0.7rem;
            }
            .footer-bottom-links {
                gap: 0.6rem;
            }
            .footer-bottom-links a {
                font-size: 0.7rem;
            }
        }

        /* ========== UTILITY ========== */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category4 */
:root {
            --color-primary: #1b3b2b;
            --color-primary-dark: #0f2318;
            --color-accent-warm: #c4a07a;
            --color-accent-coral: #e0553d;
            --color-accent-coral-dark: #c94a34;
            --color-bg-light: #faf7f2;
            --color-bg-panel: #f5f2ed;
            --color-text-main: #1a1a1a;
            --color-text-sub: #5c5c5c;
            --color-text-weak: #8a8a8a;
            --color-white: #ffffff;
            --color-border: #e5ded5;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 2px 12px rgba(27, 59, 43, 0.06);
            --shadow-card-hover: 0 4px 20px rgba(27, 59, 43, 0.12);
            --shadow-btn-hover: 0 6px 18px rgba(224, 85, 61, 0.28);
            --shadow-lg: 0 8px 32px rgba(27, 59, 43, 0.10);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.25s ease;
            --font-stack: system-ui, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --max-width: 1280px;
            --section-gap: 80px;
            --section-gap-mobile: 48px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text-main);
            background-color: var(--color-bg-light);
            margin: 0;
            padding: 0;
            min-height: 100vh;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-coral);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--color-accent-coral);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        input:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 1px;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== HEADER / NAV ========== */
        .site-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 35, 24, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(196, 160, 122, 0.18);
            transition: all var(--transition-smooth);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            height: 62px;
            gap: 1.5rem;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
            color: var(--color-white);
            font-weight: 700;
            font-size: 1.25rem;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }
        .nav-brand:hover {
            opacity: 0.85;
            color: var(--color-white);
        }
        .nav-logo-icon {
            font-size: 1.45rem;
            color: var(--color-accent-coral);
            display: flex;
            align-items: center;
        }
        .nav-logo-text {
            letter-spacing: 0.02em;
        }
        .nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0.15rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-link {
            display: inline-block;
            padding: 0.45rem 0.75rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.82);
            border-radius: var(--radius-md);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: #fff;
            background: rgba(224, 85, 61, 0.28);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }
        .nav-hot-tag {
            font-size: 0.8rem;
            color: var(--color-accent-warm);
            background: rgba(196, 160, 122, 0.12);
            padding: 0.35rem 0.7rem;
            border-radius: 20px;
            white-space: nowrap;
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .nav-search-trigger {
            background: none;
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            padding: 0.4rem;
            border-radius: 50%;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
        }
        .nav-search-trigger:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: none;
            padding: 6px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* ========== HERO ========== */
        .page-hero {
            background: linear-gradient(160deg, #0f2318 0%, #1b3b2b 45%, #1e4030 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0 70px;
            text-align: center;
            color: var(--color-white);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.22;
            z-index: 0;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg-light), transparent);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(224, 85, 61, 0.22);
            color: var(--color-accent-coral);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.4rem 1rem;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 1.25rem;
            border: 1px solid rgba(224, 85, 61, 0.3);
        }
        .page-hero h1 {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 700;
            color: #fff;
            margin: 0 0 1rem;
            letter-spacing: -0.02em;
            line-height: 1.25;
        }
        .page-hero .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.78);
            max-width: 620px;
            margin: 0 auto 1.75rem;
            line-height: 1.7;
            letter-spacing: 0.01em;
        }
        .btn {
            display: inline-block;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-md);
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            cursor: pointer;
            text-align: center;
            border: none;
            font-family: inherit;
        }
        .btn-primary {
            background: var(--color-accent-coral);
            color: #fff;
            box-shadow: 0 2px 8px rgba(224, 85, 61, 0.3);
        }
        .btn-primary:hover {
            background: var(--color-accent-coral-dark);
            color: #fff;
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-1px);
        }
        .btn-ghost {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #fff;
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
        }
        .btn-outline-dark:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-1px);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-accent-coral);
            margin-bottom: 0.5rem;
        }
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 0.6rem;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-sub);
            max-width: 600px;
            margin: 0 0 2.5rem;
            line-height: 1.7;
        }
        .section-desc.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        /* ========== TIER CARDS ========== */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .tier-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1.5px solid transparent;
            transition: all var(--transition-smooth);
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .tier-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .tier-card.featured {
            border-color: var(--color-accent-coral);
            box-shadow: var(--shadow-lg);
            background: #fffcf9;
        }
        .tier-card.featured::before {
            content: '🔥 热门推荐';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-accent-coral);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 0.9rem;
            border-radius: 20px;
            white-space: nowrap;
            letter-spacing: 0.03em;
        }
        .tier-icon {
            font-size: 2.2rem;
            color: var(--color-accent-warm);
            margin-bottom: 0.25rem;
        }
        .tier-card.featured .tier-icon {
            color: var(--color-accent-coral);
        }
        .tier-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.01em;
        }
        .tier-price {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-accent-coral);
        }
        .tier-price small {
            font-size: 0.8rem;
            font-weight: 400;
            color: var(--color-text-weak);
        }
        .tier-features {
            list-style: none;
            margin: 0;
            padding: 0;
            text-align: left;
            font-size: 0.85rem;
            color: var(--color-text-sub);
            line-height: 1.7;
            flex-grow: 1;
        }
        .tier-features li {
            padding: 0.25rem 0;
            padding-left: 1.2rem;
            position: relative;
        }
        .tier-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 0.75rem;
        }
        .tier-card .btn {
            margin-top: auto;
            width: 100%;
        }

        /* ========== STEPS (核心：分类页4步骤式布局) ========== */
        .steps-container {
            position: relative;
            max-width: 860px;
            margin: 0 auto;
        }
        .steps-container::before {
            content: '';
            position: absolute;
            left: 39px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--color-accent-warm);
            border-radius: 2px;
            z-index: 0;
        }
        .step-item {
            display: flex;
            gap: 2rem;
            align-items: flex-start;
            margin-bottom: 3rem;
            position: relative;
            z-index: 1;
        }
        .step-item:last-child {
            margin-bottom: 0;
        }
        .step-marker {
            flex-shrink: 0;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            position: relative;
            z-index: 2;
            box-shadow: 0 0 0 6px var(--color-bg-light);
            letter-spacing: 0.02em;
        }
        .step-item.completed .step-marker {
            background: var(--color-accent-warm);
            color: #fff;
        }
        .step-content {
            flex: 1;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 1.75rem 2rem;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            border-left: 4px solid var(--color-accent-warm);
        }
        .step-content:hover {
            box-shadow: var(--shadow-card-hover);
            border-left-color: var(--color-accent-coral);
        }
        .step-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 0.4rem;
            letter-spacing: 0.01em;
        }
        .step-content p {
            color: var(--color-text-sub);
            margin: 0 0 0.75rem;
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .step-image-placeholder {
            width: 100%;
            height: 180px;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-top: 0.75rem;
            background: var(--color-bg-panel);
        }
        .step-image-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .step-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-accent-coral);
            background: rgba(224, 85, 61, 0.08);
            padding: 0.2rem 0.6rem;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            margin-bottom: 0.5rem;
        }

        /* ========== BENEFIT DETAIL BLOCK ========== */
        .benefit-detail-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
        }
        .benefit-detail-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
        }
        .benefit-detail-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .benefit-detail-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 1rem;
            letter-spacing: -0.01em;
        }
        .benefit-detail-text p {
            color: var(--color-text-sub);
            line-height: 1.8;
            margin: 0 0 0.75rem;
        }
        .benefit-list {
            list-style: none;
            margin: 1rem 0 0;
            padding: 0;
        }
        .benefit-list li {
            padding: 0.5rem 0 0.5rem 1.6rem;
            position: relative;
            color: var(--color-text-main);
            font-weight: 500;
            font-size: 0.95rem;
        }
        .benefit-list li::before {
            content: '⚽';
            position: absolute;
            left: 0;
            font-size: 0.8rem;
            top: 0.55rem;
        }

        /* ========== DATA STRIP ========== */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .data-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            border-top: 4px solid var(--color-accent-warm);
        }
        .data-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-top-color: var(--color-accent-coral);
        }
        .data-number {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            margin-bottom: 0.25rem;
        }
        .data-unit {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            font-weight: 500;
        }
        .data-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text-sub);
            margin-top: 0.4rem;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border-left: 3px solid var(--color-accent-warm);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .faq-item.open {
            border-left-color: var(--color-accent-coral);
        }
        .faq-question {
            padding: 1.25rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            user-select: none;
        }
        .faq-question .faq-icon {
            font-size: 0.8rem;
            color: var(--color-accent-warm);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-accent-coral);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            background: var(--color-bg-panel);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 1.5rem 1.25rem;
            color: var(--color-text-sub);
            line-height: 1.75;
            font-size: 0.95rem;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary-dark);
            border-radius: var(--radius-xl);
            padding: 3.5rem 2rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            margin: 0 0 0.75rem;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.78);
            max-width: 500px;
            margin: 0 auto 1.5rem;
            font-size: 1rem;
        }
        .cta-section .btn-primary {
            font-size: 1rem;
            padding: 0.8rem 2.2rem;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 3.5rem 1.5rem 1.5rem;
            margin-top: var(--section-gap);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            max-width: var(--max-width);
            margin: 0 auto 2.5rem;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 1rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-coral);
        }
        .footer-friend-links {
            max-width: var(--max-width);
            margin: 0 auto 2rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            align-items: center;
        }
        .footer-friend-links span {
            color: rgba(255, 255, 255, 0.5);
            cursor: default;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 1.5rem;
            text-align: center;
            max-width: var(--max-width);
            margin: 0 auto;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
            line-height: 2;
        }
        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
            margin-bottom: 0.5rem;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.8rem;
        }
        .footer-bottom-links a:hover {
            color: var(--color-accent-coral);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .tier-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .benefit-detail-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                gap: 0;
            }
            .nav-link {
                padding: 0.4rem 0.55rem;
                font-size: 0.82rem;
            }
            .nav-hot-tag {
                display: none;
            }
            .step-marker {
                width: 60px;
                height: 60px;
                font-size: 1.2rem;
            }
            .steps-container::before {
                left: 29px;
            }
            .step-item {
                gap: 1.25rem;
            }
            .step-content {
                padding: 1.25rem 1.5rem;
            }
        }

        @media (max-width: 768px) {
            .tier-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .page-hero {
                padding: 50px 0 50px;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .site-footer {
                margin-top: var(--section-gap-mobile);
            }
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 62px;
                left: 0;
                right: 0;
                background: rgba(15, 35, 24, 0.97);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 1rem;
                gap: 0.3rem;
                transform: translateY(-120%);
                transition: transform 0.35s ease;
                z-index: 999;
                border-bottom: 1px solid rgba(196, 160, 122, 0.2);
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-link {
                width: 100%;
                padding: 0.7rem 1rem;
                font-size: 0.95rem;
            }
            .nav-hot-tag {
                display: none;
            }
            .steps-container::before {
                left: 24px;
            }
            .step-marker {
                width: 50px;
                height: 50px;
                font-size: 1rem;
            }
            .step-item {
                gap: 1rem;
                margin-bottom: 2rem;
            }
            .step-content {
                padding: 1rem 1.25rem;
            }
            .step-content h3 {
                font-size: 1.05rem;
            }
            .step-image-placeholder {
                height: 140px;
            }
            .benefit-detail-grid {
                gap: 1.25rem;
            }
            .cta-section {
                padding: 2.5rem 1.25rem;
            }
        }

        @media (max-width: 520px) {
            .tier-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .data-strip {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .step-marker {
                width: 40px;
                height: 40px;
                font-size: 0.9rem;
            }
            .steps-container::before {
                left: 19px;
            }
            .step-item {
                gap: 0.75rem;
                margin-bottom: 1.75rem;
            }
            .step-content {
                padding: 1rem;
                border-left-width: 3px;
            }
            .step-image-placeholder {
                height: 120px;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .btn {
                padding: 0.6rem 1.4rem;
                font-size: 0.9rem;
            }
            .nav-inner {
                height: 54px;
                padding: 0 1rem;
            }
            .nav-links {
                top: 54px;
            }
        }

/* roulang page: category5 */
:root {
            --green-deep: #1b3b2b;
            --green-dark: #0f2318;
            --sand-gold: #c4a07a;
            --coral: #e0553d;
            --coral-hover: #c94a34;
            --cream: #faf7f2;
            --warm-gray: #f5f2ed;
            --text-main: #1a1a1a;
            --text-sub: #5c5c5c;
            --text-weak: #8a8a8a;
            --border-soft: #e8e3db;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 2px 12px rgba(27, 59, 43, 0.07);
            --shadow-card-hover: 0 8px 28px rgba(27, 59, 43, 0.13);
            --shadow-btn: 0 4px 14px rgba(224, 85, 61, 0.22);
            --shadow-btn-hover: 0 6px 22px rgba(224, 85, 61, 0.32);
            --transition-base: 0.25s ease;
            --font-stack: system-ui, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --container-max: 1280px;
            --section-gap: 5rem;
            --section-gap-sm: 3rem;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--cream);
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--coral);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== HEADER / NAV ========== */
        .site-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 35, 24, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(196, 160, 122, 0.18);
            transition: all var(--transition-base);
        }

        .nav-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
            color: #fff;
            text-decoration: none;
            transition: opacity var(--transition-base);
        }
        .nav-brand:hover {
            opacity: 0.85;
        }

        .nav-logo-icon {
            font-size: 1.4rem;
            color: var(--coral);
        }

        .nav-logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: #fff;
            white-space: nowrap;
        }

        .nav-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-links li a {
            display: block;
            padding: 0.45rem 0.85rem;
            font-size: 0.875rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.78);
            border-radius: var(--radius-md);
            white-space: nowrap;
            transition: all var(--transition-base);
        }
        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-links li a.active {
            color: #fff;
            background: rgba(224, 85, 61, 0.3);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }

        .nav-hot-tag {
            font-size: 0.8rem;
            color: var(--sand-gold);
            padding: 0.3rem 0.65rem;
            border-radius: 20px;
            background: rgba(196, 160, 122, 0.12);
            cursor: default;
            white-space: nowrap;
            display: none;
        }
        @media (min-width: 900px) {
            .nav-hot-tag {
                display: inline-block;
            }
        }

        .nav-search-trigger {
            background: none;
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            padding: 0.4rem;
            border-radius: 50%;
            transition: all var(--transition-base);
        }
        .nav-search-trigger:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            padding: 0.4rem;
            border-radius: var(--radius-sm);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            border-radius: 2px;
            background: #fff;
            transition: all var(--transition-base);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        @media (max-width: 1024px) {
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(15, 35, 24, 0.97);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: stretch;
                padding: 1.5rem;
                gap: 0.3rem;
                transform: translateX(100%);
                transition: transform 0.3s ease;
                overflow-y: auto;
                z-index: 999;
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-links li a {
                padding: 0.75rem 1rem;
                font-size: 1rem;
                border-radius: var(--radius-md);
            }
        }

        /* ========== HERO ========== */
        .page-hero {
            position: relative;
            min-height: 44vh;
            display: flex;
            align-items: center;
            background: var(--green-dark);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 30%;
            background-blend-mode: overlay;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 35, 24, 0.55) 0%, rgba(27, 59, 43, 0.78) 100%);
            z-index: 1;
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            padding: 4rem 0;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(224, 85, 61, 0.85);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.35rem 1rem;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 1.25rem;
        }
        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #fff;
            margin: 0 0 1rem;
            line-height: 1.25;
        }
        .page-hero .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 540px;
            margin: 0 auto 2rem;
            line-height: 1.65;
        }
        .page-hero .hero-cta-group {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-coral {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--coral);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.8rem 1.8rem;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-btn);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-coral:hover {
            background: var(--coral-hover);
            box-shadow: var(--shadow-btn-hover);
            transform: translateY(-2px);
            color: #fff;
            text-decoration: none;
        }

        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.8rem 1.8rem;
            border-radius: var(--radius-md);
            border: 1.5px solid rgba(255, 255, 255, 0.55);
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            text-decoration: none;
        }

        @media (max-width: 768px) {
            .page-hero {
                min-height: 38vh;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .page-hero .hero-content {
                padding: 2.5rem 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .btn-coral,
            .btn-ghost-light {
                padding: 0.7rem 1.3rem;
                font-size: 0.9rem;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-gap-sm) 0;
            }
        }

        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--green-deep);
            letter-spacing: -0.01em;
            margin: 0 0 0.5rem;
        }
        .section-header .section-lead {
            font-size: 0.95rem;
            color: var(--text-sub);
            max-width: 500px;
            margin: 0 auto;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 1.6rem;
            }
        }

        /* ========== BENEFITS GRID ========== */
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        @media (max-width: 1024px) {
            .benefits-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.25rem;
            }
        }
        @media (max-width: 768px) {
            .benefits-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
        }
        @media (max-width: 480px) {
            .benefits-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
        }

        .benefit-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.6rem 1.25rem;
            text-align: center;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.75rem;
        }
        .benefit-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--sand-gold);
        }
        .benefit-card .benefit-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            flex-shrink: 0;
            background: var(--warm-gray);
            color: var(--green-deep);
            transition: all var(--transition-base);
        }
        .benefit-card:hover .benefit-icon {
            background: var(--green-deep);
            color: #fff;
        }
        .benefit-card .benefit-icon.highlight-icon {
            background: rgba(224, 85, 61, 0.1);
            color: var(--coral);
        }
        .benefit-card:hover .benefit-icon.highlight-icon {
            background: var(--coral);
            color: #fff;
        }
        .benefit-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            margin: 0;
            line-height: 1.35;
        }
        .benefit-card p {
            font-size: 0.85rem;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.55;
            flex-grow: 1;
        }
        .benefit-card .benefit-btn {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--coral);
            padding: 0.4rem 1rem;
            border: 1px solid var(--coral);
            border-radius: 20px;
            transition: all var(--transition-base);
            cursor: pointer;
            background: transparent;
            text-decoration: none;
            white-space: nowrap;
        }
        .benefit-card .benefit-btn:hover {
            background: var(--coral);
            color: #fff;
            text-decoration: none;
        }
        .benefit-card .benefit-btn.locked {
            color: var(--text-weak);
            border-color: var(--border-soft);
            cursor: default;
            pointer-events: none;
        }

        /* ========== DATA STRIP ========== */
        .data-strip {
            background: var(--green-deep);
            color: #fff;
            padding: 2.5rem 0;
        }
        .data-strip .data-row {
            display: flex;
            justify-content: center;
            gap: 3rem;
            flex-wrap: wrap;
            text-align: center;
        }
        .data-strip .data-item .data-number {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--sand-gold);
            letter-spacing: -0.01em;
            line-height: 1.1;
        }
        .data-strip .data-item .data-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 0.3rem;
        }
        @media (max-width: 768px) {
            .data-strip .data-row {
                gap: 1.5rem;
            }
            .data-strip .data-item .data-number {
                font-size: 1.8rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            background: #fff;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item.open {
            border-color: var(--sand-gold);
            box-shadow: 0 2px 16px rgba(27, 59, 43, 0.06);
        }
        .faq-question {
            width: 100%;
            background: none;
            text-align: left;
            padding: 1.2rem 1.5rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            cursor: pointer;
            border: none;
            line-height: 1.5;
            transition: color var(--transition-base);
        }
        .faq-question:hover {
            color: var(--green-deep);
        }
        .faq-question .faq-indicator {
            flex-shrink: 0;
            width: 3px;
            height: 20px;
            border-radius: 2px;
            background: var(--sand-gold);
            transition: all var(--transition-base);
        }
        .faq-item.open .faq-question .faq-indicator {
            background: var(--coral);
            height: 26px;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 1.5rem 1.3rem;
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.7;
            background: var(--warm-gray);
            margin: 0 0.75rem 0.75rem;
            border-radius: var(--radius-md);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(160deg, var(--green-deep) 0%, var(--green-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 3.5rem 1.5rem;
            border-radius: var(--radius-xl);
            margin: 0 1.5rem var(--section-gap);
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 768px) {
            .cta-section {
                margin: 0 1rem var(--section-gap-sm);
                padding: 2.5rem 1.25rem;
                border-radius: var(--radius-lg);
            }
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0 0 0.75rem;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin: 0 auto 1.75rem;
            max-width: 480px;
            line-height: 1.6;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--green-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 3rem 0 2rem;
            margin-top: 0;
        }
        .site-footer .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--sand-gold);
            margin: 0 0 0.8rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.4rem;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-base);
            cursor: pointer;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-friend-links {
            text-align: center;
            padding: 1.25rem 0;
            border-top: 1px solid rgba(196, 160, 122, 0.2);
            border-bottom: 1px solid rgba(196, 160, 122, 0.2);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.6rem;
            align-items: center;
        }
        .footer-friend-links span {
            color: rgba(255, 255, 255, 0.45);
            cursor: default;
        }
        .footer-bottom {
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.8;
        }
        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
            margin-bottom: 0.5rem;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.78rem;
            cursor: pointer;
            transition: color var(--transition-base);
        }
        .footer-bottom-links a:hover {
            color: #fff;
        }

        /* ========== Foundation overrides ========== */
        .row {
            max-width: var(--container-max);
        }
        .foundation .row .columns {
            padding-left: 0.75rem;
            padding-right: 0.75rem;
        }
        @media (max-width: 640px) {
            .foundation .row .columns {
                padding-left: 0.5rem;
                padding-right: 0.5rem;
            }
        }

        /* ========== Animations ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .benefit-card {
            animation: fadeInUp 0.5s ease forwards;
        }
        .benefit-card:nth-child(1) {
            animation-delay: 0.02s;
        }
        .benefit-card:nth-child(2) {
            animation-delay: 0.05s;
        }
        .benefit-card:nth-child(3) {
            animation-delay: 0.08s;
        }
        .benefit-card:nth-child(4) {
            animation-delay: 0.11s;
        }
        .benefit-card:nth-child(5) {
            animation-delay: 0.14s;
        }
        .benefit-card:nth-child(6) {
            animation-delay: 0.17s;
        }
        .benefit-card:nth-child(7) {
            animation-delay: 0.2s;
        }
        .benefit-card:nth-child(8) {
            animation-delay: 0.23s;
        }
        .benefit-card:nth-child(9) {
            animation-delay: 0.26s;
        }
        .benefit-card:nth-child(10) {
            animation-delay: 0.29s;
        }
        .benefit-card:nth-child(11) {
            animation-delay: 0.32s;
        }
        .benefit-card:nth-child(12) {
            animation-delay: 0.35s;
        }
        .benefit-card:nth-child(13) {
            animation-delay: 0.38s;
        }
        .benefit-card:nth-child(14) {
            animation-delay: 0.41s;
        }
        .benefit-card:nth-child(15) {
            animation-delay: 0.44s;
        }
        .benefit-card:nth-child(16) {
            animation-delay: 0.47s;
        }