/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2b4d7a;
            --accent: #f4a261;
            --accent-light: #f9c784;
            --bg-dark: #0d1b2a;
            --bg-mid: #1b2838;
            --bg-light: #f8f9fa;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aa0;
            --text-white: #ffffff;
            --border-color: #e8e8f0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --shadow-glow: 0 0 40px rgba(230,57,70,0.20);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-light);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.06);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            font-weight: 900;
            box-shadow: 0 4px 12px rgba(230,57,70,0.3);
        }
        .logo span { background: linear-gradient(135deg, var(--secondary), var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--primary); background: rgba(230,57,70,0.06); }
        .nav-list a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(230,57,70,0.3);
        }
        .nav-cta {
            padding: 10px 28px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 4px 16px rgba(230,57,70,0.3);
            transition: var(--transition);
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(230,57,70,0.4); color: #fff; }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
        }
        .mobile-toggle span {
            width: 28px;
            height: 3px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        @media (max-width: 768px) {
            .mobile-toggle { display: flex; }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border-color);
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-list a { width: 100%; padding: 14px 20px; border-radius: var(--radius-sm); }
            .nav-cta { display: none; }
            .mobile-cta { display: block; width: 100%; text-align: center; margin-top: 8px; }
        }
        @media (min-width: 769px) {
            .mobile-cta { display: none; }
        }

        /* ===== Hero Section ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            overflow: hidden;
            background: var(--bg-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.4;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% { transform: scale(1.05); }
            100% { transform: scale(1.15); }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.92) 0%, rgba(27,40,56,0.80) 50%, rgba(230,57,70,0.30) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 60px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(230,57,70,0.20);
            border: 1px solid rgba(230,57,70,0.30);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 28px;
            backdrop-filter: blur(10px);
        }
        .hero-badge i { font-size: 12px; }
        .hero h1 {
            font-size: 56px;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.1;
            letter-spacing: -1.5px;
            margin-bottom: 20px;
        }
        .hero h1 span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 18px;
            color: rgba(255,255,255,0.75);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 600px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 8px 32px rgba(230,57,70,0.35);
            transition: var(--transition);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(230,57,70,0.45); color: #fff; }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 50px;
            border: 2px solid rgba(255,255,255,0.25);
            color: var(--text-white);
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }
        .btn-outline:hover { border-color: var(--primary); background: rgba(230,57,70,0.15); color: var(--text-white); }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.10);
        }
        .hero-stat-item { text-align: left; }
        .hero-stat-item .num {
            font-size: 32px;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1;
        }
        .hero-stat-item .num span { color: var(--primary-light); }
        .hero-stat-item .label {
            font-size: 14px;
            color: rgba(255,255,255,0.50);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero h1 { font-size: 34px; }
            .hero p { font-size: 16px; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat-item .num { font-size: 26px; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 28px; }
            .hero-actions { flex-direction: column; width: 100%; }
            .btn-primary, .btn-outline { width: 100%; justify-content: center; }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(230,57,70,0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 38px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.8px;
            margin-bottom: 16px;
        }
        .section-sub {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header .section-sub { margin: 0 auto; }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-title { font-size: 28px; }
        }

        /* ===== Categories / Cards Grid ===== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
        .category-card .card-img {
            height: 200px;
            background: var(--bg-mid);
            position: relative;
            overflow: hidden;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .card-img img { transform: scale(1.05); }
        .category-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(0,0,0,0.4) 0%, transparent 60%);
        }
        .category-card .card-body {
            padding: 24px;
        }
        .category-card .card-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            background: rgba(230,57,70,0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .category-card .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .category-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .category-card .card-footer {
            padding: 16px 24px;
            border-top: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .category-card .card-footer a {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .category-card .card-footer a:hover { gap: 10px; }
        @media (max-width: 1024px) {
            .cards-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 620px) {
            .cards-grid { grid-template-columns: 1fr; }
        }

        /* ===== Features / Info Blocks ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .feature-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(230,57,70,0.10), rgba(29,53,87,0.10));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
        }
        .feature-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .feature-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
        }

        /* ===== Latest Posts (CMS List) ===== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .post-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
        .post-card .post-img {
            height: 200px;
            background: var(--bg-mid);
            position: relative;
            overflow: hidden;
        }
        .post-card .post-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .post-card:hover .post-img img { transform: scale(1.03); }
        .post-card .post-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .post-meta .cat {
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(230,57,70,0.08);
            color: var(--primary);
            font-weight: 600;
            font-size: 12px;
        }
        .post-card .post-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .post-card .post-body h3 a:hover { color: var(--primary); }
        .post-card .post-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }
        .post-card .post-body .read-more {
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .post-card .post-body .read-more:hover { gap: 10px; }
        @media (max-width: 768px) {
            .posts-grid { grid-template-columns: 1fr; }
        }

        /* ===== Stats / Data Section ===== */
        .stats-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }
        .stat-block {
            text-align: center;
            padding: 32px 16px;
            border-radius: var(--radius-md);
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.06);
            backdrop-filter: blur(10px);
        }
        .stat-block .num {
            font-size: 48px;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-block .num span { color: var(--primary-light); }
        .stat-block .label {
            font-size: 15px;
            color: rgba(255,255,255,0.60);
            font-weight: 500;
        }
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr; }
            .stat-block .num { font-size: 36px; }
        }

        /* ===== Process / Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 40px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
        }
        .step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 48px;
            font-weight: 900;
            color: rgba(230,57,70,0.08);
            line-height: 1;
        }
        .step-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            color: #fff;
            box-shadow: 0 8px 24px rgba(230,57,70,0.25);
        }
        .step-item h4 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps-grid { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(230,57,70,0.20); }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            gap: 16px;
            user-select: none;
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary), var(--bg-dark));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 40px 0;
        }
        .cta-inner h2 {
            font-size: 38px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-inner p {
            font-size: 17px;
            color: rgba(255,255,255,0.70);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-inner .btn-primary { font-size: 18px; padding: 18px 48px; }
        @media (max-width: 768px) {
            .cta-inner h2 { font-size: 28px; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.70);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo { color: var(--text-white); margin-bottom: 16px; }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.50);
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255,255,255,0.55);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,0.40);
        }
        .footer-bottom a { color: rgba(255,255,255,0.50); }
        .footer-bottom a:hover { color: var(--primary-light); }
        .footer-socials {
            display: flex;
            gap: 12px;
        }
        .footer-socials a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.50);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-socials a:hover { background: var(--primary); color: #fff; }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 4px 20px rgba(230,57,70,0.35);
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: var(--transition);
            z-index: 999;
        }
        .back-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
        .back-top:hover { background: var(--primary-dark); transform: translateY(-4px); }

        /* ===== Responsive Fine-tuning ===== */
        @media (max-width: 1024px) {
            .hero h1 { font-size: 44px; }
        }
        @media (max-width: 480px) {
            .hero h1 { font-size: 26px; }
            .section-title { font-size: 24px; }
            .btn-primary, .btn-outline { padding: 14px 24px; font-size: 15px; }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-fade-up { animation: fadeUp 0.6s ease forwards; }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }
        .delay-4 { animation-delay: 0.4s; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1724;
            --primary-light: #1a2744;
            --accent: #d4a02b;
            --accent-light: #e8bc4a;
            --accent-dark: #b8881e;
            --bg-body: #f4f5f7;
            --bg-card: #ffffff;
            --bg-dark: #0b111e;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a5a;
            --text-light: #8a8a9a;
            --text-white: #f0f0f0;
            --border-color: #e0e2e8;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-dark); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(15, 23, 36, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(212, 160, 43, 0.15);
            z-index: 1000;
            transition: var(--transition);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .logo:hover { color: var(--accent); }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: #0f1724;
        }
        .logo span { color: #fff; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-list a:hover { color: #fff; background: rgba(212, 160, 43, 0.12); }
        .nav-list a.active {
            color: #0f1724;
            background: var(--accent);
            font-weight: 600;
        }
        .nav-cta {
            padding: 9px 24px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #0f1724;
            white-space: nowrap;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .nav-cta:hover { background: var(--accent-light); color: #0f1724; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(212, 160, 43, 0.35); }
        .desktop-cta { display: inline-flex; }
        .mobile-cta { display: none; }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px 4px;
            border: none;
            background: transparent;
        }
        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 4px;
            transition: var(--transition);
        }
        .mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .mobile-toggle.active span:nth-child(2) { opacity: 0; }
        .mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Article Banner ===== */
        .article-banner {
            margin-top: var(--header-h);
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--bg-dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 17, 30, 0.88) 0%, rgba(15, 23, 36, 0.72) 100%);
            z-index: 1;
        }
        .article-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
            padding: 60px 24px 50px;
        }
        .article-banner .banner-category {
            display: inline-block;
            padding: 5px 18px;
            border-radius: 30px;
            background: var(--accent);
            color: #0f1724;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }
        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .article-banner .banner-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 18px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.92rem;
        }
        .article-banner .banner-meta i { margin-right: 5px; color: var(--accent); }

        /* ===== Article Body ===== */
        .article-section {
            padding: 60px 0 40px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
            align-items: start;
        }
        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
        }
        .article-main .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-main .article-body p {
            margin-bottom: 1.4em;
        }
        .article-main .article-body h2, .article-main .article-body h3 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            color: var(--text-primary);
            font-weight: 700;
        }
        .article-main .article-body h2 { font-size: 1.6rem; }
        .article-main .article-body h3 { font-size: 1.25rem; }
        .article-main .article-body ul, .article-main .article-body ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-main .article-body ul li { list-style: disc; margin-bottom: 0.3em; }
        .article-main .article-body ol li { list-style: decimal; margin-bottom: 0.3em; }
        .article-main .article-body img {
            border-radius: var(--radius-sm);
            margin: 1.5em 0;
        }
        .article-main .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 12px 20px;
            margin: 1.5em 0;
            background: rgba(212, 160, 43, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-main .article-body a { color: var(--accent); font-weight: 500; text-decoration: underline; }
        .article-main .article-body a:hover { color: var(--accent-dark); }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
        }
        .article-tags .tag {
            padding: 5px 16px;
            border-radius: 30px;
            background: rgba(212, 160, 43, 0.08);
            color: var(--accent);
            font-size: 0.82rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--accent); color: #0f1724; }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
            flex-wrap: wrap;
        }
        .article-share span { font-size: 0.88rem; color: var(--text-light); font-weight: 500; }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-body);
            color: var(--text-secondary);
            font-size: 1rem;
            transition: var(--transition);
        }
        .article-share a:hover { background: var(--accent); color: #0f1724; transform: translateY(-2px); }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
            display: inline-block;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-card ul li:last-child { border-bottom: none; }
        .sidebar-card ul li a {
            color: var(--text-secondary);
            font-size: 0.92rem;
            transition: var(--transition);
            display: block;
        }
        .sidebar-card ul li a:hover { color: var(--accent); padding-left: 4px; }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 32px 24px;
            text-align: center;
            border-radius: var(--radius-md);
            color: #fff;
        }
        .sidebar-cta h4 { color: #fff; border-bottom-color: var(--accent); margin-bottom: 12px; }
        .sidebar-cta p { font-size: 0.9rem; color: rgba(255,255,255,0.7); margin-bottom: 18px; }
        .sidebar-cta .btn-accent {
            display: inline-block;
            padding: 10px 28px;
            border-radius: 30px;
            background: var(--accent);
            color: #0f1724;
            font-weight: 600;
            transition: var(--transition);
        }
        .sidebar-cta .btn-accent:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(212,160,43,0.3); }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-box .nf-icon {
            font-size: 4rem;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-light); margin-bottom: 24px; }
        .not-found-box .btn-back {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 30px;
            background: var(--accent);
            color: #0f1724;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover { background: var(--accent-light); transform: translateY(-2px); }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 50px 0 70px;
            background: var(--bg-body);
        }
        .related-section .section-title {
            text-align: center;
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 36px;
            color: var(--text-primary);
        }
        .related-section .section-title span { color: var(--accent); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .card-img {
            height: 180px;
            background: var(--bg-dark) center center / cover no-repeat;
            position: relative;
        }
        .related-card .card-img .card-cat {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 20px;
            background: var(--accent);
            color: #0f1724;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card .card-body h3 a { color: var(--text-primary); }
        .related-card .card-body h3 a:hover { color: var(--accent); }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .card-meta {
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .related-card .card-body .card-meta i { margin-right: 4px; color: var(--accent); }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 70px 0;
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat fixed;
            position: relative;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 17, 30, 0.92) 0%, rgba(15, 23, 36, 0.80) 100%);
            z-index: 1;
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.7);
            max-width: 620px;
            margin: 0 auto 30px;
        }
        .cta-section .btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-section .btn-primary {
            padding: 14px 36px;
            border-radius: 30px;
            background: var(--accent);
            color: #0f1724;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(212,160,43,0.35); }
        .cta-section .btn-outline {
            padding: 13px 32px;
            border-radius: 30px;
            border: 2px solid rgba(255,255,255,0.25);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(212,160,43,0.08); }

        /* ===== Footer ===== */
        .site-footer {
            background: #0b111e;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 30px;
        }
        .footer-brand .logo { margin-bottom: 14px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255, 255, 255, 0.55); max-width: 320px; }
        .footer-col h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-socials a:hover { background: var(--accent); color: #0f1724; transform: translateY(-2px); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: rgba(11, 17, 30, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 8px;
                transform: translateY(-110%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid rgba(212, 160, 43, 0.1);
                pointer-events: none;
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-list a { width: 100%; text-align: center; padding: 12px 0; font-size: 1rem; }
            .desktop-cta { display: none; }
            .mobile-cta { display: flex; margin-top: 10px; justify-content: center; }
            .mobile-toggle { display: flex; }
            .article-banner { min-height: 260px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-banner .banner-content { padding: 40px 16px 36px; }
            .article-main { padding: 24px 18px; }
            .article-main .article-body { font-size: 0.98rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .cta-section h2 { font-size: 1.5rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 16px; }
            .logo { font-size: 1.1rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 1rem; }
            .article-banner h1 { font-size: 1.35rem; }
            .article-main { padding: 18px 14px; }
            .related-card .card-img { height: 150px; }
            .cta-section { padding: 50px 0; }
            .cta-section .btn-group { flex-direction: column; width: 100%; }
            .cta-section .btn-primary, .cta-section .btn-outline { width: 100%; justify-content: center; }
        }

        /* ===== Utilities ===== */
        .text-accent { color: var(--accent); }
        .mt-1 { margin-top: 1rem; }
        .mb-1 { margin-bottom: 1rem; }
        .text-center { text-align: center; }
        .fade-in { animation: fadeIn 0.6s ease forwards; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
        --primary: #e3252b;
        --primary-dark: #b81c22;
        --primary-light: #fbe5e6;
        --secondary: #1a1a2e;
        --secondary-light: #2d2d4a;
        --accent: #f5a623;
        --bg-body: #f8f9fc;
        --bg-card: #ffffff;
        --bg-dark: #0f0f1a;
        --text-main: #1a1a2e;
        --text-light: #6b7280;
        --text-white: #ffffff;
        --border: #e5e7eb;
        --border-light: #f0f0f5;
        --radius: 16px;
        --radius-sm: 10px;
        --radius-xs: 6px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
        --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
        --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
        --shadow-hover: 0 16px 48px rgba(227,37,43,0.14);
        --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        --max-width: 1200px;
        --header-height: 72px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-main);
        background: var(--bg-body);
        padding-top: var(--header-height);
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
    button { cursor: pointer; background: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-main); }
    .container {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Header / Nav ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--header-height);
        background: rgba(255,255,255,0.96);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-light);
        z-index: 1000;
        transition: var(--transition);
    }
    .site-header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.06); }
    .header-inner {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 800;
        font-size: 22px;
        color: var(--text-main);
        flex-shrink: 0;
    }
    .logo .logo-icon {
        width: 38px;
        height: 38px;
        background: var(--primary);
        color: #fff;
        border-radius: var(--radius-xs);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        font-weight: 800;
    }
    .logo span { letter-spacing: -0.3px; }
    .nav-list {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .nav-list a {
        padding: 8px 16px;
        border-radius: var(--radius-sm);
        font-size: 15px;
        font-weight: 500;
        color: var(--text-light);
        transition: var(--transition);
        position: relative;
        white-space: nowrap;
    }
    .nav-list a:hover { color: var(--primary); background: var(--primary-light); }
    .nav-list a.active {
        color: var(--primary);
        background: var(--primary-light);
        font-weight: 600;
    }
    .nav-list a.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        background: var(--primary);
        border-radius: 2px;
    }
    .nav-cta {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 24px;
        border-radius: var(--radius-sm);
        background: var(--primary);
        color: #fff !important;
        font-weight: 600;
        font-size: 14px;
        transition: var(--transition);
        white-space: nowrap;
    }
    .nav-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(227,37,43,0.30); }
    .mobile-cta { display: none; }
    .desktop-cta { display: inline-flex; }
    .mobile-toggle {
        display: none;
        flex-direction: column;
        gap: 5px;
        padding: 6px;
        cursor: pointer;
    }
    .mobile-toggle span {
        width: 26px;
        height: 2.5px;
        background: var(--text-main);
        border-radius: 2px;
        transition: var(--transition);
    }

    /* ===== Hero Banner ===== */
    .category-hero {
        position: relative;
        padding: 100px 0 80px;
        background: linear-gradient(135deg, var(--bg-dark) 0%, var(--secondary) 60%, #1a2a3a 100%);
        overflow: hidden;
        min-height: 420px;
        display: flex;
        align-items: center;
    }
    .category-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        opacity: 0.18;
        mix-blend-mode: overlay;
    }
    .category-hero::after {
        content: '';
        position: absolute;
        inset: 0;
        background: radial-gradient(ellipse at 80% 20%, rgba(227,37,43,0.15) 0%, transparent 70%);
    }
    .category-hero .container { position: relative; z-index: 2; text-align: center; }
    .category-hero .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 6px 16px;
        background: rgba(255,255,255,0.10);
        backdrop-filter: blur(6px);
        border: 1px solid rgba(255,255,255,0.15);
        border-radius: 50px;
        color: var(--accent);
        font-size: 13px;
        font-weight: 500;
        letter-spacing: 0.5px;
        margin-bottom: 24px;
    }
    .category-hero h1 {
        font-size: 52px;
        font-weight: 800;
        color: var(--text-white);
        margin-bottom: 16px;
        letter-spacing: -1px;
        line-height: 1.1;
    }
    .category-hero h1 span { color: var(--accent); }
    .category-hero p {
        font-size: 19px;
        color: rgba(255,255,255,0.75);
        max-width: 680px;
        margin: 0 auto 32px;
        line-height: 1.7;
    }
    .hero-stats {
        display: flex;
        justify-content: center;
        gap: 48px;
        flex-wrap: wrap;
        margin-top: 12px;
    }
    .hero-stats .stat-item { text-align: center; }
    .hero-stats .stat-num {
        font-size: 36px;
        font-weight: 800;
        color: #fff;
        line-height: 1.1;
    }
    .hero-stats .stat-num small { font-size: 18px; font-weight: 400; color: var(--accent); }
    .hero-stats .stat-label { font-size: 14px; color: rgba(255,255,255,0.55); margin-top: 4px; }

    /* ===== Section通用 ===== */
    .section {
        padding: 80px 0;
    }
    .section-alt { background: var(--bg-card); }
    .section-dark {
        background: var(--bg-dark);
        color: var(--text-white);
    }
    .section-dark .section-title,
    .section-dark .section-sub { color: var(--text-white); }
    .section-title {
        font-size: 36px;
        font-weight: 800;
        margin-bottom: 12px;
        letter-spacing: -0.5px;
    }
    .section-sub {
        font-size: 17px;
        color: var(--text-light);
        max-width: 600px;
        margin-bottom: 48px;
        line-height: 1.6;
    }
    .section-title-center { text-align: center; }
    .section-sub-center { margin-left: auto; margin-right: auto; text-align: center; }

    /* ===== 卡片网格 ===== */
    .card-grid {
        display: grid;
        gap: 28px;
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
    .card {
        background: var(--bg-card);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(227,37,43,0.15);
    }
    .card-img {
        width: 100%;
        height: 200px;
        object-fit: cover;
        background: #eef1f5;
    }
    .card-body { padding: 24px; }
    .card-body .card-tag {
        display: inline-block;
        padding: 4px 12px;
        border-radius: 50px;
        background: var(--primary-light);
        color: var(--primary);
        font-size: 12px;
        font-weight: 600;
        margin-bottom: 12px;
        letter-spacing: 0.3px;
    }
    .card-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
    .card-body h3 a { color: var(--text-main); }
    .card-body h3 a:hover { color: var(--primary); }
    .card-body p { font-size: 15px; color: var(--text-light); line-height: 1.6; margin-bottom: 16px; }
    .card-meta {
        display: flex;
        align-items: center;
        gap: 16px;
        font-size: 13px;
        color: #9ca3af;
        border-top: 1px solid var(--border-light);
        padding-top: 16px;
    }
    .card-meta i { margin-right: 4px; }

    /* ===== 数据特色板块 ===== */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 24px;
    }
    .feature-item {
        background: rgba(255,255,255,0.05);
        border: 1px solid rgba(255,255,255,0.10);
        border-radius: var(--radius);
        padding: 32px 24px;
        text-align: center;
        transition: var(--transition);
    }
    .feature-item:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }
    .feature-item .feat-icon {
        font-size: 40px;
        color: var(--accent);
        margin-bottom: 16px;
    }
    .feature-item h4 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 8px; }
    .feature-item p { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.6; }

    /* ===== 流程/步骤 ===== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 32px;
        counter-reset: step;
    }
    .step-item {
        text-align: center;
        padding: 32px 20px;
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-light);
        position: relative;
        transition: var(--transition);
    }
    .step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .step-item::before {
        counter-increment: step;
        content: counter(step);
        position: absolute;
        top: -14px;
        left: 50%;
        transform: translateX(-50%);
        width: 32px;
        height: 32px;
        background: var(--primary);
        color: #fff;
        font-size: 14px;
        font-weight: 700;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 4px 12px rgba(227,37,43,0.30);
    }
    .step-item .step-icon { font-size: 36px; color: var(--primary); margin-bottom: 12px; margin-top: 8px; }
    .step-item h4 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
    .step-item p { font-size: 14px; color: var(--text-light); line-height: 1.6; }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border-light);
        border-radius: var(--radius-sm);
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover { border-color: rgba(227,37,43,0.20); }
    .faq-question {
        padding: 20px 24px;
        font-size: 16px;
        font-weight: 600;
        display: flex;
        justify-content: space-between;
        align-items: center;
        cursor: pointer;
        gap: 16px;
        color: var(--text-main);
        background: transparent;
        width: 100%;
        text-align: left;
    }
    .faq-question i { color: var(--primary); transition: var(--transition); font-size: 14px; }
    .faq-item.open .faq-question i { transform: rotate(180deg); }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.3s ease;
        padding: 0 24px;
        font-size: 15px;
        color: var(--text-light);
        line-height: 1.7;
    }
    .faq-item.open .faq-answer {
        max-height: 300px;
        padding: 0 24px 20px;
    }

    /* ===== CTA ===== */
    .cta-section {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        padding: 72px 0;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        opacity: 0.10;
        mix-blend-mode: overlay;
    }
    .cta-section .container { position: relative; z-index: 2; }
    .cta-section h2 {
        font-size: 38px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 12px;
        letter-spacing: -0.5px;
    }
    .cta-section p {
        font-size: 18px;
        color: rgba(255,255,255,0.85);
        margin-bottom: 32px;
        max-width: 560px;
        margin-left: auto;
        margin-right: auto;
    }
    .cta-btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 16px 40px;
        border-radius: var(--radius-sm);
        background: #fff;
        color: var(--primary) !important;
        font-weight: 700;
        font-size: 16px;
        transition: var(--transition);
        box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    }
    .cta-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.25); background: #fef2f2; }
    .cta-btn i { transition: var(--transition); }
    .cta-btn:hover i { transform: translateX(4px); }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark);
        color: rgba(255,255,255,0.7);
        padding: 60px 0 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.8fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .footer-brand .logo { margin-bottom: 16px; }
    .footer-brand .logo span { color: #fff; }
    .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.5); max-width: 320px; }
    .footer-col h5 {
        font-size: 15px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 16px;
        letter-spacing: 0.3px;
    }
    .footer-col a {
        display: block;
        font-size: 14px;
        color: rgba(255,255,255,0.5);
        padding: 5px 0;
        transition: var(--transition);
    }
    .footer-col a:hover { color: var(--accent); padding-left: 4px; }
    .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 24px 0;
        flex-wrap: wrap;
        gap: 16px;
        font-size: 13px;
        color: rgba(255,255,255,0.35);
    }
    .footer-socials { display: flex; gap: 14px; }
    .footer-socials a {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        background: rgba(255,255,255,0.06);
        display: flex;
        align-items: center;
        justify-content: center;
        color: rgba(255,255,255,0.5);
        font-size: 16px;
        transition: var(--transition);
    }
    .footer-socials a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

    /* ===== 面包屑 ===== */
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        color: var(--text-light);
        padding: 16px 0;
        flex-wrap: wrap;
    }
    .breadcrumb a { color: var(--text-light); }
    .breadcrumb a:hover { color: var(--primary); }
    .breadcrumb span { color: var(--text-main); font-weight: 500; }
    .breadcrumb i { font-size: 12px; color: #ccc; }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .footer-grid { grid-template-columns: 1fr 1fr; }
        .category-hero h1 { font-size: 40px; }
        .hero-stats { gap: 32px; }
    }
    @media (max-width: 768px) {
        .nav-list {
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            flex-direction: column;
            padding: 20px 24px;
            gap: 4px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.10);
            transform: translateY(-120%);
            opacity: 0;
            transition: var(--transition);
            border-bottom: 1px solid var(--border-light);
            max-height: 80vh;
            overflow-y: auto;
        }
        .nav-list.open { transform: translateY(0); opacity: 1; }
        .nav-list a { width: 100%; padding: 14px 16px; font-size: 16px; }
        .nav-list a.active::after { display: none; }
        .mobile-cta { display: flex !important; margin-top: 8px; justify-content: center; }
        .desktop-cta { display: none; }
        .mobile-toggle { display: flex; }
        .category-hero { padding: 72px 0 56px; min-height: auto; }
        .category-hero h1 { font-size: 32px; }
        .category-hero p { font-size: 16px; }
        .hero-stats { gap: 24px; }
        .hero-stats .stat-num { font-size: 28px; }
        .section { padding: 56px 0; }
        .section-title { font-size: 28px; }
        .card-grid { grid-template-columns: 1fr; }
        .feature-grid { grid-template-columns: 1fr 1fr; }
        .steps-grid { grid-template-columns: 1fr 1fr; }
        .footer-grid { grid-template-columns: 1fr; gap: 32px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .cta-section h2 { font-size: 28px; }
        .cta-btn { padding: 14px 32px; font-size: 15px; }
    }
    @media (max-width: 520px) {
        .header-inner { padding: 0 16px; }
        .logo { font-size: 18px; }
        .logo .logo-icon { width: 32px; height: 32px; font-size: 16px; }
        .category-hero h1 { font-size: 26px; }
        .hero-stats { flex-direction: column; gap: 16px; }
        .hero-stats .stat-num { font-size: 24px; }
        .feature-grid { grid-template-columns: 1fr; }
        .steps-grid { grid-template-columns: 1fr; }
        .faq-question { font-size: 15px; padding: 16px 18px; }
        .card-body { padding: 18px; }
        .section-title { font-size: 24px; }
        .container { padding: 0 16px; }
        .cta-section h2 { font-size: 24px; }
        .cta-section p { font-size: 15px; }
    }