/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #C41E3A;
            --color-primary-dark: #A0182F;
            --color-primary-light: #E84A5F;
            --color-gold: #D4A843;
            --color-gold-light: #E8C97A;
            --color-dark: #0F0F1A;
            --color-dark-2: #1A1A2E;
            --color-dark-3: #252540;
            --color-bg: #F5F5F8;
            --color-bg-alt: #EBEBF0;
            --color-white: #FFFFFF;
            --color-text: #1A1A2E;
            --color-text-light: #6B7280;
            --color-text-lighter: #9CA3AF;
            --color-border: #E5E7EB;
            --color-border-light: #F0F0F5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.08);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 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-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background: var(--color-bg);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        button { font-family: inherit; cursor: pointer; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--color-dark); }
        h1 { font-size: clamp(2.2rem, 5.5vw, 3.8rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.2vw, 1.6rem); }
        h4 { font-size: clamp(1rem, 1.6vw, 1.2rem); }
        p { color: var(--color-text-light); line-height: 1.7; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding { padding: 80px 0; }
        .section-padding-sm { padding: 56px 0; }
        .text-center { text-align: center; }
        .text-gold { color: var(--color-gold); }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--color-bg); }
        ::-webkit-scrollbar-thumb { background: var(--color-text-lighter); border-radius: 3px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.06); }
        .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 {
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: 8px;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
        }
        .logo span { color: var(--color-primary); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-light);
            position: relative;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .nav-list a:hover { color: var(--color-primary); }
        .nav-list a:hover::after { width: 100%; }
        .nav-list a.active { color: var(--color-primary); }
        .nav-list a.active::after { width: 100%; }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: var(--color-primary);
            color: #fff !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: background var(--transition), transform var(--transition);
        }
        .nav-cta::after { display: none !important; }
        .nav-cta:hover { background: var(--color-primary-dark); transform: translateY(-1px); color: #fff !important; }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 4px;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-dark);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            overflow: hidden;
            background: var(--color-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.45;
            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(15,15,26,0.92) 0%, rgba(15,15,26,0.70) 50%, rgba(196,30,58,0.25) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-text { max-width: 640px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(212,168,67,0.18);
            border: 1px solid rgba(212,168,67,0.3);
            border-radius: 50px;
            color: var(--color-gold-light);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero-title {
            color: #fff;
            font-size: clamp(2.4rem, 5.5vw, 4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }
        .hero-title span { color: var(--color-gold); }
        .hero-desc {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.7);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 4px 16px rgba(196,30,58,0.35);
        }
        .btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(196,30,58,0.45); color: #fff; }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border: 2px solid rgba(255,255,255,0.25);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: border-color var(--transition), background var(--transition), transform var(--transition);
        }
        .btn-outline:hover { border-color: var(--color-gold); background: rgba(212,168,67,0.1); transform: translateY(-2px); color: #fff; }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .hero-stat-item { text-align: center; }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-gold);
            line-height: 1.2;
            display: block;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            margin-top: 6px;
            display: block;
        }
        .hero-stat-divider { width: 1px; background: rgba(255,255,255,0.1); }

        /* ===== Section Titles ===== */
        .section-title {
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-light);
            max-width: 600px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            background: rgba(196,30,58,0.08);
            color: var(--color-primary);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        /* ===== Services / 核心服务 ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .service-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .service-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 20px;
        }
        .service-icon.red { background: var(--color-primary); }
        .service-icon.gold { background: var(--color-gold); }
        .service-icon.dark { background: var(--color-dark-2); }
        .service-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
        .service-card p { font-size: 0.92rem; }

        /* ===== Data Dashboard / 数据看板 ===== */
        .data-dashboard {
            background: var(--color-dark);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            overflow: hidden;
        }
        .data-dashboard::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(196,30,58,0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .data-item {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .data-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-gold);
            display: block;
            line-height: 1.2;
        }
        .data-item .num small { font-size: 1rem; font-weight: 500; color: rgba(255,255,255,0.4); }
        .data-item .label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            margin-top: 8px;
            display: block;
        }
        .data-item .trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.8rem;
            margin-top: 6px;
            padding: 2px 10px;
            border-radius: 50px;
        }
        .trend.up { background: rgba(34,197,94,0.15); color: #34D399; }
        .trend.down { background: rgba(239,68,68,0.15); color: #F87171; }

        /* ===== Featured / 热门推荐 ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .featured-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .featured-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .featured-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .featured-body { padding: 20px 24px 24px; }
        .featured-tag {
            display: inline-block;
            padding: 2px 12px;
            background: rgba(196,30,58,0.08);
            color: var(--color-primary);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .featured-body h3 { font-size: 1.05rem; margin-bottom: 8px; }
        .featured-body p { font-size: 0.88rem; margin-bottom: 16px; }
        .featured-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--color-text-lighter);
            border-top: 1px solid var(--color-border-light);
            padding-top: 14px;
        }
        .featured-meta i { margin-right: 4px; }

        /* ===== Latest / 最新资讯 (CMS) ===== */
        .latest-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 800px;
            margin: 0 auto;
        }
        .latest-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .latest-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
        .latest-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(196,30,58,0.08);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .latest-content { flex: 1; min-width: 0; }
        .latest-content h4 { font-size: 1rem; margin-bottom: 4px; }
        .latest-content h4 a { color: var(--color-dark); }
        .latest-content h4 a:hover { color: var(--color-primary); }
        .latest-content p { font-size: 0.85rem; color: var(--color-text-lighter); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .latest-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--color-text-lighter);
        }
        .latest-meta .cat {
            padding: 2px 12px;
            background: rgba(212,168,67,0.12);
            color: var(--color-gold);
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.75rem;
        }
        .latest-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--color-text-lighter);
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }

        /* ===== Guide / 大神攻略 ===== */
        .guide-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .guide-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .guide-img img { width: 100%; height: 400px; object-fit: cover; }
        .guide-text h2 { margin-bottom: 16px; }
        .guide-text p { margin-bottom: 24px; font-size: 1rem; }
        .guide-features {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-bottom: 28px;
        }
        .guide-features li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--color-text);
        }
        .guide-features li i { color: var(--color-gold); font-size: 1rem; width: 20px; text-align: center; }

        /* ===== How It Works / 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step;
        }
        .step-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 28px;
            height: 28px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(196,30,58,0.3);
        }
        .step-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(196,30,58,0.08);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin: 0 auto 16px;
        }
        .step-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
        .step-card p { font-size: 0.85rem; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 0 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-dark);
            user-select: none;
        }
        .faq-question i { color: var(--color-text-lighter); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--color-primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding-bottom: 20px;
        }
        .faq-answer p { font-size: 0.92rem; color: var(--color-text-light); }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-dark);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(196,30,58,0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 { color: #fff; font-size: clamp(1.8rem, 3vw, 2.6rem); margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.6); max-width: 520px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-section .btn-primary { font-size: 1.05rem; padding: 16px 40px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.45); max-width: 300px; line-height: 1.7; }
        .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 18px; font-weight: 600; }
        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul a { font-size: 0.88rem; color: rgba(255,255,255,0.5); transition: color var(--transition); }
        .footer-col ul a:hover { color: var(--color-gold); }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: var(--color-gold); }
        .footer-socials { display: flex; gap: 16px; }
        .footer-socials a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(255,255,255,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.4);
            transition: border-color var(--transition), color var(--transition), background var(--transition);
        }
        .footer-socials a:hover { border-color: var(--color-gold); color: var(--color-gold); background: rgba(212,168,67,0.08); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-content { grid-template-columns: 1fr; gap: 40px; }
            .hero-text { max-width: 100%; }
            .hero-stats { max-width: 500px; }
            .services-grid { grid-template-columns: repeat(2, 1fr); }
            .featured-grid { grid-template-columns: repeat(2, 1fr); }
            .data-dashboard { grid-template-columns: repeat(2, 1fr); gap: 24px; }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .guide-wrap { grid-template-columns: 1fr; }
            .guide-img img { height: 280px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            .section-padding { padding: 56px 0; }
            .section-padding-sm { padding: 40px 0; }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 24px 32px;
                gap: 20px;
                border-bottom: 1px solid var(--color-border);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.4s ease, opacity 0.4s ease;
                box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            }
            .nav-list.open { transform: translateY(0); opacity: 1; }
            .nav-toggle { display: flex; }
            .hero { min-height: 90vh; }
            .hero-title { font-size: clamp(1.8rem, 7vw, 2.8rem); }
            .hero-desc { font-size: 1rem; }
            .hero-stats { grid-template-columns: repeat(3, 1fr); padding: 24px 16px; }
            .hero-stat-item .num { font-size: 1.5rem; }
            .services-grid { grid-template-columns: 1fr; }
            .featured-grid { grid-template-columns: 1fr; }
            .data-dashboard { grid-template-columns: 1fr 1fr; padding: 32px 24px; }
            .data-item .num { font-size: 1.8rem; }
            .steps-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
            .latest-item { flex-direction: column; align-items: flex-start; gap: 12px; }
            .latest-meta { width: 100%; justify-content: flex-start; }
            .cta-section { padding: 40px 24px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-stats { grid-template-columns: 1fr 1fr 1fr; padding: 16px 12px; gap: 8px; }
            .hero-stat-item .num { font-size: 1.2rem; }
            .hero-stat-item .label { font-size: 0.7rem; }
            .data-dashboard { grid-template-columns: 1fr 1fr; padding: 24px 16px; gap: 16px; }
            .data-item .num { font-size: 1.4rem; }
            .steps-grid { grid-template-columns: 1fr; }
            .services-grid { gap: 16px; }
            .featured-grid { gap: 16px; }
            .featured-img { height: 160px; }
            .btn-primary, .btn-outline { padding: 12px 24px; font-size: 0.9rem; }
        }

        /* ===== Utility ===== */
        .bg-alt { background: var(--color-bg-alt); }
        .bg-white { background: var(--color-white); }
        .rounded-full { border-radius: 9999px; }
        .gap-2 { gap: 8px; }
        .gap-4 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .mt-2 { margin-top: 8px; }
        .mt-4 { margin-top: 16px; }
        .mb-2 { margin-bottom: 8px; }
        .mb-4 { margin-bottom: 16px; }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(24px); }
            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 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1a1a2e;
            --color-primary-light: #16213e;
            --color-secondary: #0f3460;
            --color-accent: #e94560;
            --color-accent-hover: #d63850;
            --color-gold: #f0c040;
            --color-gold-light: #f5d060;
            --color-bg: #f8f9fc;
            --color-bg-dark: #0d0d1a;
            --color-bg-card: #ffffff;
            --color-bg-section: #f0f2f8;
            --color-text: #1a1a2e;
            --color-text-light: #5a5a7a;
            --color-text-muted: #8a8aaa;
            --color-border: #e0e2ee;
            --color-border-light: #eef0f6;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.06);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.08);
            --shadow-glow: 0 0 30px rgba(233,69,96,0.15);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: all 0.25s 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: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-accent); }
        a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 4px; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; transition: var(--transition); }
        button:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul { list-style: none; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(18px) saturate(1.2);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
        }
        .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: 6px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.5px;
        }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 8px;
            font-size: 1.15rem;
            font-weight: 800;
        }
        .logo span { color: var(--color-gold); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-light);
            position: relative;
            white-space: nowrap;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transition: transform 0.3s ease;
        }
        .nav-list a:hover { color: var(--color-primary); }
        .nav-list a:hover::after { transform: translateX(-50%) scaleX(1); }
        .nav-list a.active { color: var(--color-primary); font-weight: 600; }
        .nav-list a.active::after { transform: translateX(-50%) scaleX(1); background: var(--color-accent); }
        .nav-list a.nav-cta {
            background: var(--color-accent);
            color: #fff !important;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.88rem;
            box-shadow: 0 4px 14px rgba(233,69,96,0.25);
        }
        .nav-list a.nav-cta::after { display: none; }
        .nav-list a.nav-cta:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(233,69,96,0.35); }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            cursor: pointer;
        }
        .nav-toggle span {
            width: 26px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.97);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--color-border);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .nav-list a { width: 100%; padding: 12px 16px; font-size: 1rem; }
            .nav-list a::after { display: none; }
            .nav-list a.nav-cta { text-align: center; }
            .nav-toggle { display: flex; }
        }

        /* ===== Banner ===== */
        .article-banner {
            position: relative;
            background: var(--color-bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 80px 0 64px;
            margin-top: 0;
            min-height: 220px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,13,26,0.82) 0%, rgba(15,52,96,0.65) 100%);
            z-index: 1;
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-banner .breadcrumb a:hover { color: var(--color-gold); }
        .article-banner .breadcrumb .sep { color: rgba(255,255,255,0.35); }
        .article-banner .breadcrumb .current { color: var(--color-gold); }
        .article-banner h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            max-width: 820px;
            letter-spacing: -0.3px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.25);
        }
        .article-meta-banner {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            margin-top: 18px;
            color: rgba(255,255,255,0.75);
            font-size: 0.92rem;
        }
        .article-meta-banner .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta-banner .meta-item i { color: var(--color-gold); font-size: 0.85rem; }
        .article-meta-banner .tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 50px;
            background: rgba(240,192,64,0.2);
            color: var(--color-gold);
            font-size: 0.82rem;
            font-weight: 500;
            border: 1px solid rgba(240,192,64,0.25);
        }
        @media (max-width: 768px) {
            .article-banner { padding: 60px 0 48px; min-height: 180px; }
            .article-banner h1 { font-size: 1.5rem; }
            .article-meta-banner { gap: 10px 20px; font-size: 0.84rem; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.25rem; }
            .article-banner { padding: 44px 0 36px; }
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 48px 0 72px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-content {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            border: 1px solid var(--color-border-light);
        }
        .article-content .content-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--color-text);
        }
        .article-content .content-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 36px 0 16px;
            color: var(--color-primary);
            border-left: 4px solid var(--color-accent);
            padding-left: 16px;
        }
        .article-content .content-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--color-secondary);
        }
        .article-content .content-body p {
            margin-bottom: 18px;
            color: var(--color-text-light);
        }
        .article-content .content-body ul, .article-content .content-body ol {
            margin: 16px 0 20px 24px;
            color: var(--color-text-light);
        }
        .article-content .content-body li { margin-bottom: 8px; }
        .article-content .content-body a { color: var(--color-accent); border-bottom: 1px solid transparent; }
        .article-content .content-body a:hover { border-bottom-color: var(--color-accent); }
        .article-content .content-body blockquote {
            margin: 24px 0;
            padding: 20px 24px;
            background: var(--color-bg-section);
            border-left: 4px solid var(--color-gold);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--color-text-light);
        }
        .article-content .content-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content .content-body pre {
            background: var(--color-bg-dark);
            color: #e8e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 20px 0;
        }
        .article-content .content-body code {
            font-family: 'JetBrains Mono', 'Fira Code', monospace;
            background: var(--color-bg-section);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.88rem;
        }
        .article-content .content-body pre code { background: transparent; padding: 0; }
        .article-content .content-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
        }
        .article-content .content-body th, .article-content .content-body td {
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            text-align: left;
        }
        .article-content .content-body th {
            background: var(--color-bg-section);
            font-weight: 600;
            color: var(--color-primary);
        }
        .article-content .content-body td { color: var(--color-text-light); }
        .article-content .content-body hr {
            margin: 32px 0;
            border: none;
            height: 1px;
            background: var(--color-border-light);
        }

        /* 文章底部 */
        .article-footer-bar {
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border-light);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-footer-bar .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-footer-bar .tags .tag-item {
            padding: 4px 14px;
            border-radius: 50px;
            background: var(--color-bg-section);
            color: var(--color-text-light);
            font-size: 0.82rem;
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
        }
        .article-footer-bar .tags .tag-item:hover { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
        .article-footer-bar .share {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }
        .article-footer-bar .share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-bg-section);
            color: var(--color-text-light);
            transition: var(--transition);
        }
        .article-footer-bar .share a:hover { background: var(--color-accent); color: #fff; transform: translateY(-2px); }

        /* 侧边栏 */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-accent);
            display: inline-block;
        }
        .sidebar-list { display: flex; flex-direction: column; gap: 10px; }
        .sidebar-list li { }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            background: var(--color-bg);
            font-size: 0.92rem;
            color: var(--color-text-light);
            transition: var(--transition);
        }
        .sidebar-list a:hover { background: var(--color-accent); color: #fff; transform: translateX(4px); }
        .sidebar-list a i { font-size: 0.8rem; color: var(--color-gold); width: 18px; text-align: center; }
        .sidebar-list a:hover i { color: #fff; }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            text-align: center;
            padding: 32px 24px;
            border-radius: var(--radius-md);
        }
        .sidebar-cta h4 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
        .sidebar-cta p { font-size: 0.9rem; opacity: 0.8; margin-bottom: 18px; }
        .sidebar-cta .btn-gold {
            display: inline-block;
            padding: 10px 28px;
            border-radius: 50px;
            background: var(--color-gold);
            color: var(--color-primary);
            font-weight: 600;
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .sidebar-cta .btn-gold:hover { background: var(--color-gold-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(240,192,64,0.3); }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; gap: 36px; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
        }
        @media (max-width: 768px) {
            .article-content { padding: 24px 20px; }
            .article-content .content-body { font-size: 1rem; }
            .article-sidebar { grid-template-columns: 1fr; }
        }
        @media (max-width: 520px) {
            .article-content { padding: 18px 14px; }
            .article-content .content-body { font-size: 0.95rem; }
            .article-footer-bar { flex-direction: column; align-items: flex-start; }
        }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .not-found-box .nf-icon {
            font-size: 3.6rem;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--color-text-light);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }
        .not-found-box .btn-back {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 50px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover { background: var(--color-accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-glow); }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 48px 0 64px;
            background: var(--color-bg-section);
        }
        .related-section .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section .section-title i { color: var(--color-accent); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--color-bg-section);
        }
        .related-card .card-body {
            padding: 18px 20px 22px;
        }
        .related-card .card-body .card-cat {
            font-size: 0.78rem;
            color: var(--color-accent);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .card-meta {
            margin-top: 12px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            display: flex;
            gap: 16px;
        }
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 640px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-card .card-img { height: 200px; }
        }

        /* ===== CTA 区块 ===== */
        .article-cta {
            padding: 56px 0 48px;
            background: var(--color-bg-dark);
            position: relative;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .article-cta .container { position: relative; z-index: 1; text-align: center; }
        .article-cta h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .article-cta p {
            color: rgba(255,255,255,0.7);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .article-cta .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .article-cta .btn-primary {
            padding: 14px 36px;
            border-radius: 50px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }
        .article-cta .btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
        .article-cta .btn-outline {
            padding: 14px 36px;
            border-radius: 50px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.25);
            transition: var(--transition);
        }
        .article-cta .btn-outline:hover { border-color: var(--color-gold); color: var(--color-gold); transform: translateY(-2px); }
        @media (max-width: 520px) {
            .article-cta h2 { font-size: 1.35rem; }
            .article-cta p { font-size: 0.95rem; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 16px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 320px; }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul a:hover { color: var(--color-gold); padding-left: 4px; }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            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: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.5);
            transition: var(--transition);
        }
        .footer-socials a:hover { background: var(--color-accent); color: #fff; transform: translateY(-2px); }
        @media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
        @media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; gap: 24px; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== 通用工具 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #1a1a2e;
            --color-primary-light: #16213e;
            --color-secondary: #0f3460;
            --color-accent: #e94560;
            --color-gold: #f5c518;
            --color-gold-dark: #d4a800;
            --color-bg: #f8f9fc;
            --color-bg-alt: #eef1f7;
            --color-bg-dark: #0d0d1a;
            --color-text: #1a1a2e;
            --color-text-light: #4a4a6a;
            --color-text-muted: #7a7a9a;
            --color-border: #e2e5ef;
            --color-white: #ffffff;
            --color-success: #2ecc71;
            --color-warning: #f39c12;
            --color-danger: #e74c3c;
            --color-info: #3498db;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 24px rgba(233, 69, 96, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 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-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }

        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(--color-primary);
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Navigation (极简高端) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .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-size: 22px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.3px;
        }

        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 18px;
            font-weight: 800;
            line-height: 1;
        }

        .logo span {
            color: var(--color-accent);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-list a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-light);
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.2px;
            transition: var(--transition);
        }

        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 80%;
            height: 2.5px;
            background: var(--color-accent);
            border-radius: 4px;
            transition: var(--transition);
        }

        .nav-list a:hover {
            color: var(--color-primary);
        }

        .nav-list a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-list a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-list a.active::after {
            transform: translateX(-50%) scaleX(1);
            background: var(--color-accent);
        }

        .nav-list .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            background: var(--color-accent);
            color: #fff !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(233, 69, 96, 0.25);
        }

        .nav-list .nav-cta::after {
            display: none;
        }

        .nav-list .nav-cta:hover {
            background: #d63850;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(233, 69, 96, 0.35);
            color: #fff !important;
        }

        .nav-list .nav-cta i {
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px 4px;
            cursor: pointer;
        }

        .nav-toggle span {
            width: 26px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 4px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 24px 32px 32px;
                gap: 18px;
                box-shadow: var(--shadow-md);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid var(--color-border);
            }

            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }

            .nav-list a {
                font-size: 17px;
                padding: 8px 0;
                width: 100%;
                text-align: center;
            }

            .nav-list a::after {
                bottom: 0;
            }

            .nav-list .nav-cta {
                justify-content: center;
                padding: 12px 24px;
                font-size: 16px;
                margin-top: 6px;
            }

            .nav-toggle {
                display: flex;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 60%, var(--color-secondary) 100%);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--color-bg), transparent);
            z-index: 1;
        }

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

        .page-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50px;
            color: var(--color-gold);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .page-banner .banner-badge i {
            font-size: 14px;
        }

        .page-banner h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .page-banner h1 span {
            color: var(--color-gold);
        }

        .page-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .page-banner .banner-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .page-banner .banner-stats .stat-item {
            text-align: center;
            color: #fff;
        }

        .page-banner .banner-stats .stat-item .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--color-gold);
            line-height: 1.2;
        }

        .page-banner .banner-stats .stat-item .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 120px 0 60px;
                min-height: 300px;
            }

            .page-banner h1 {
                font-size: 32px;
            }

            .page-banner p {
                font-size: 16px;
            }

            .page-banner .banner-stats {
                gap: 28px;
            }

            .page-banner .banner-stats .stat-item .num {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 26px;
            }

            .page-banner .banner-stats {
                gap: 20px;
            }

            .page-banner .banner-stats .stat-item .num {
                font-size: 22px;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--color-bg-alt);
        }

        .section-dark {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.85);
        }

        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #fff;
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            background: rgba(233, 69, 96, 0.1);
            border-radius: 50px;
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-header h2 span {
            color: var(--color-accent);
        }

        .section-header p {
            font-size: 17px;
            color: var(--color-text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        .section-dark .section-header h2 {
            color: #fff;
        }

        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-dark .section-header .section-tag {
            background: rgba(245, 197, 24, 0.15);
            color: var(--color-gold);
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

            .section-header {
                margin-bottom: 36px;
            }

            .section-header h2 {
                font-size: 28px;
            }

            .section-header p {
                font-size: 15px;
            }
        }

        /* ===== Insight Intro ===== */
        .insight-intro .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .insight-intro .intro-content h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--color-primary);
        }

        .insight-intro .intro-content h3 span {
            color: var(--color-accent);
        }

        .insight-intro .intro-content p {
            color: var(--color-text-light);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .insight-intro .intro-content .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .insight-intro .intro-content .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--color-text);
        }

        .insight-intro .intro-content .feature-list li i {
            color: var(--color-success);
            font-size: 18px;
            flex-shrink: 0;
        }

        .insight-intro .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .insight-intro .intro-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: var(--transition);
        }

        .insight-intro .intro-image:hover img {
            transform: scale(1.03);
        }

        @media (max-width: 768px) {
            .insight-intro .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .insight-intro .intro-content h3 {
                font-size: 24px;
            }

            .insight-intro .intro-image img {
                height: 260px;
            }
        }

        /* ===== Data Cards ===== */
        .data-cards .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .data-cards .data-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .data-cards .data-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
            opacity: 0;
            transition: var(--transition);
        }

        .data-cards .data-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .data-cards .data-card:hover::before {
            opacity: 1;
        }

        .data-cards .data-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin: 0 auto 16px;
            background: rgba(233, 69, 96, 0.08);
            color: var(--color-accent);
            transition: var(--transition);
        }

        .data-cards .data-card:hover .card-icon {
            background: var(--color-accent);
            color: #fff;
            transform: scale(1.05);
        }

        .data-cards .data-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary);
        }

        .data-cards .data-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        .data-cards .data-card .card-stat {
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--color-border);
            display: flex;
            justify-content: center;
            gap: 20px;
        }

        .data-cards .data-card .card-stat .stat-num {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-accent);
        }

        .data-cards .data-card .card-stat .stat-label {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        @media (max-width: 520px) {
            .data-cards .cards-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Article List ===== */
        .article-list .article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 28px;
        }

        .article-list .article-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .article-list .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .article-list .article-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .article-list .article-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .article-list .article-card:hover .card-img img {
            transform: scale(1.05);
        }

        .article-list .article-card .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            background: var(--color-accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }

        .article-list .article-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-list .article-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 10px;
        }

        .article-list .article-card .card-body .card-meta i {
            margin-right: 4px;
        }

        .article-list .article-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-primary);
            line-height: 1.4;
        }

        .article-list .article-card .card-body p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .article-list .article-card .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            transition: var(--transition);
        }

        .article-list .article-card .card-body .card-link i {
            font-size: 12px;
            transition: var(--transition);
        }

        .article-list .article-card .card-body .card-link:hover {
            color: var(--color-accent);
            gap: 10px;
        }

        @media (max-width: 768px) {
            .article-list .article-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .article-list .article-card .card-img {
                height: 180px;
            }
        }

        /* ===== Tools Section ===== */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .tools-grid .tool-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }

        .tools-grid .tool-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(245, 197, 24, 0.3);
            transform: translateY(-4px);
        }

        .tools-grid .tool-item .tool-icon {
            font-size: 32px;
            color: var(--color-gold);
            margin-bottom: 12px;
        }

        .tools-grid .tool-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .tools-grid .tool-item p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.5;
        }

        .tools-grid .tool-item .tool-status {
            display: inline-block;
            margin-top: 12px;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 11px;
            font-weight: 600;
            background: rgba(46, 204, 113, 0.2);
            color: var(--color-success);
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-grid .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-grid .faq-item:hover {
            border-color: transparent;
            box-shadow: var(--shadow-sm);
        }

        .faq-grid .faq-item .faq-q {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            cursor: pointer;
            gap: 12px;
            user-select: none;
            transition: var(--transition);
        }

        .faq-grid .faq-item .faq-q i {
            font-size: 16px;
            color: var(--color-accent);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-grid .faq-item.active .faq-q i {
            transform: rotate(45deg);
        }

        .faq-grid .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--color-text-light);
            font-size: 15px;
            line-height: 1.7;
        }

        .faq-grid .faq-item.active .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 768px) {
            .faq-grid .faq-item .faq-q {
                padding: 14px 18px;
                font-size: 15px;
            }

            .faq-grid .faq-item .faq-a {
                padding: 0 18px;
                font-size: 14px;
            }

            .faq-grid .faq-item.active .faq-a {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            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: 0.08;
            mix-blend-mode: overlay;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section h2 span {
            color: var(--color-gold);
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .cta-section .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-section .cta-buttons .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: var(--color-gold);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 16px;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(245, 197, 24, 0.3);
        }

        .cta-section .cta-buttons .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(245, 197, 24, 0.45);
            background: var(--color-gold-dark);
        }

        .cta-section .cta-buttons .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            border-radius: 50px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition);
        }

        .cta-section .cta-buttons .btn-outline:hover {
            border-color: var(--color-gold);
            color: var(--color-gold);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }

            .cta-section h2 {
                font-size: 28px;
            }

            .cta-section p {
                font-size: 15px;
            }

            .cta-section .cta-buttons .btn-primary,
            .cta-section .cta-buttons .btn-outline {
                padding: 12px 28px;
                font-size: 15px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .footer-brand .logo {
            color: #fff;
            font-size: 20px;
            margin-bottom: 16px;
            display: inline-flex;
        }

        .site-footer .footer-brand .logo span {
            color: var(--color-gold);
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 340px;
        }

        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .site-footer .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--color-gold);
            padding-left: 4px;
        }

        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .site-footer .footer-bottom span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .site-footer .footer-socials {
            display: flex;
            gap: 14px;
        }

        .site-footer .footer-socials a {
            width: 36px;
            height: 36px;
            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);
        }

        .site-footer .footer-socials a:hover {
            background: var(--color-gold);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 0;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }

            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }

            .site-footer .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .site-footer .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(--color-accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: var(--shadow-md);
            z-index: 999;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: var(--transition);
        }

        .back-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: all;
        }

        .back-top:hover {
            background: #d63850;
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        @media (max-width: 520px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 18px;
            }
        }

        /* ===== Responsive Extra ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 24px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .insight-intro .intro-content h3 {
                font-size: 20px;
            }
            .article-list .article-grid {
                grid-template-columns: 1fr;
            }
            .data-cards .cards-grid {
                grid-template-columns: 1fr;
            }
            .tools-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== Smooth fade-in ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }