/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b1124;
            --primary-light: #1a2744;
            --primary-dark: #060a17;
            --accent: #d4a84b;
            --accent-light: #e8c46a;
            --accent-dark: #b88a2e;
            --text-light: #f0f2f5;
            --text-muted: #9ca3b0;
            --text-dark: #1f2937;
            --bg-white: #ffffff;
            --bg-light: #f8f9fc;
            --bg-dark: #0b1124;
            --border-light: rgba(255,255,255,0.10);
            --border-accent: rgba(212,168,75,0.30);
            --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);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
            --tab-height: 52px;
        }

        /* ===== 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-dark);
            background: var(--bg-white);
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, 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; color: var(--primary); }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== 双层导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 17, 36, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 17, 36, 0.98);
            box-shadow: 0 4px 30px rgba(0,0,0,0.30);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.5px;
        }
        .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            font-weight: 900;
        }
        .site-logo span { background: linear-gradient(to right, var(--text-light), var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.08);
            border: 1px solid var(--border-light);
            border-radius: 40px;
            padding: 0 16px;
            height: 40px;
            width: 200px;
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--accent);
            background: rgba(255,255,255,0.12);
            width: 260px;
        }
        .header-search input {
            background: transparent;
            border: none;
            color: var(--text-light);
            padding: 0 8px;
            width: 100%;
            height: 100%;
            font-size: 14px;
        }
        .header-search input::placeholder { color: var(--text-muted); }
        .header-search i { color: var(--text-muted); font-size: 14px; }
        .btn-cta-nav {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            padding: 8px 24px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 14px;
            transition: var(--transition);
            border: none;
            white-space: nowrap;
        }
        .btn-cta-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212,168,75,0.35);
        }
        .nav-tabs {
            border-top: 1px solid var(--border-light);
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
            display: flex;
            align-items: center;
            height: var(--tab-height);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs::-webkit-scrollbar { display: none; }
        .nav-tabs a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0 20px;
            height: var(--tab-height);
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            border-bottom: 2px solid transparent;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .nav-tabs a i { font-size: 13px; }
        .nav-tabs a:hover { color: var(--text-light); }
        .nav-tabs a.active {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .nav-tabs a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 3px 3px 0 0;
        }
        .mobile-toggle {
            display: none;
            color: var(--text-light);
            font-size: 22px;
            padding: 4px;
        }
        @media (max-width: 900px) {
            .header-search { width: 140px; }
            .header-search:focus-within { width: 180px; }
        }
        @media (max-width: 768px) {
            .header-actions .header-search { display: none; }
            .mobile-toggle { display: block; }
            .header-top { height: 60px; }
            .site-logo { font-size: 18px; }
            .site-logo .logo-icon { width: 30px; height: 30px; font-size: 14px; }
            .nav-tabs {
                padding: 0 16px;
                height: 46px;
                gap: 0;
            }
            .nav-tabs a {
                padding: 0 14px;
                font-size: 13px;
                height: 46px;
            }
            .btn-cta-nav { padding: 6px 16px; font-size: 12px; }
        }
        @media (max-width: 520px) {
            .nav-tabs a { font-size: 12px; padding: 0 10px; }
            .nav-tabs a i { display: none; }
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 140px 24px 80px;
            background: var(--primary);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero-section:hover .hero-bg { transform: scale(1.0); }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11,17,36,0.60) 0%, rgba(11,17,36,0.85) 50%, rgba(11,17,36,0.95) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212,168,75,0.15);
            border: 1px solid var(--border-accent);
            padding: 6px 20px;
            border-radius: 40px;
            color: var(--accent-light);
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 28px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i { font-size: 12px; }
        .hero-title {
            font-size: clamp(44px, 8vw, 80px);
            font-weight: 900;
            line-height: 1.1;
            color: var(--text-light);
            margin-bottom: 20px;
            letter-spacing: -2px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-light), var(--accent), #f0d080);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: clamp(16px, 2.2vw, 22px);
            color: var(--text-muted);
            max-width: 660px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 16px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            padding: 16px 40px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 16px;
            transition: var(--transition);
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(212,168,75,0.35);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 2px solid var(--border-light);
            color: var(--text-light);
            padding: 14px 36px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            background: transparent;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(212,168,75,0.08);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid var(--border-light);
        }
        .stat-item {
            text-align: center;
        }
        .stat-item .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent-light);
            display: block;
        }
        .stat-item .label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero-section { padding: 110px 16px 60px; min-height: 92vh; }
            .hero-stats { gap: 24px; }
            .stat-item .num { font-size: 24px; }
            .btn-primary, .btn-outline { padding: 12px 28px; font-size: 14px; }
        }
        @media (max-width: 520px) {
            .hero-title { font-size: 36px; letter-spacing: -1px; }
            .hero-desc { font-size: 15px; }
            .hero-stats { gap: 16px; flex-direction: column; align-items: center; }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-light {
            background: var(--bg-light);
        }
        .section-white {
            background: var(--bg-white);
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-header h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -1px;
        }
        .section-dark .section-header h2 {
            color: var(--text-light);
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .section-header .subtitle {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 8px;
            background: rgba(212,168,75,0.10);
            padding: 4px 16px;
            border-radius: 40px;
        }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-header { margin-bottom: 40px; }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid #eef0f3;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-accent);
        }
        .card-dark {
            background: rgba(255,255,255,0.04);
            border-color: var(--border-light);
            backdrop-filter: blur(8px);
        }
        .card-dark:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--border-accent);
        }
        .card-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
            background: rgba(212,168,75,0.12);
            color: var(--accent);
        }
        .card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .card-dark h3 { color: var(--text-light); }
        .card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }
        .card .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 11px;
            font-weight: 600;
            background: rgba(212,168,75,0.12);
            color: var(--accent);
            margin-top: 12px;
        }
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 640px) {
            .card-grid { grid-template-columns: 1fr; }
            .card-grid-2 { grid-template-columns: 1fr; }
            .card-grid-4 { grid-template-columns: 1fr; }
            .card { padding: 24px 20px; }
        }

        /* ===== 特色介绍图文 ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .feature-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .feature-image:hover img { transform: scale(1.03); }
        .feature-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(212,168,75,0.10), transparent 60%);
            pointer-events: none;
        }
        .feature-text h2 {
            font-size: clamp(26px, 3.6vw, 36px);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .feature-text p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            color: var(--text-dark);
        }
        .feature-list li i {
            color: var(--accent);
            font-size: 16px;
            width: 20px;
            text-align: center;
        }
        .feature-list li span { font-weight: 500; }
        @media (max-width: 900px) {
            .feature-row { grid-template-columns: 1fr; gap: 40px; }
            .feature-image img { height: 300px; }
        }
        @media (max-width: 520px) {
            .feature-image img { height: 220px; }
        }

        /* ===== 资讯列表 ===== */
        .post-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .post-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid #eef0f3;
            transition: var(--transition);
        }
        .post-item:hover {
            transform: translateX(6px);
            border-color: var(--border-accent);
            box-shadow: var(--shadow-sm);
        }
        .post-item .post-cat {
            flex-shrink: 0;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 11px;
            font-weight: 600;
            background: rgba(212,168,75,0.12);
            color: var(--accent);
        }
        .post-item .post-title {
            flex: 1;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-item .post-title a { color: inherit; }
        .post-item .post-title a:hover { color: var(--accent); }
        .post-item .post-meta {
            flex-shrink: 0;
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .empty-msg {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 15px;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
        }
        @media (max-width: 640px) {
            .post-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: 16px 18px;
            }
            .post-item .post-meta { align-self: flex-end; }
            .post-item .post-title { font-size: 14px; }
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 36px 20px;
            border-radius: var(--radius-md);
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            background: rgba(255,255,255,0.08);
            transform: translateY(-4px);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            font-weight: 800;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .step-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .step-card .step-arrow {
            position: absolute;
            top: 40%;
            right: -18px;
            font-size: 18px;
            color: var(--accent);
            opacity: 0.5;
        }
        @media (max-width: 1024px) {
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 640px) {
            .steps-grid { grid-template-columns: 1fr; gap: 16px; }
            .step-card .step-arrow { display: none; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid #eef0f3;
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-accent); }
        .faq-item.open { border-color: var(--accent); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question i {
            color: var(--accent);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .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;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }
        .section-dark .faq-item {
            background: rgba(255,255,255,0.04);
            border-color: var(--border-light);
        }
        .section-dark .faq-question { color: var(--text-light); }
        .section-dark .faq-answer { color: var(--text-muted); }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary), #162040);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-block h2 {
            font-size: clamp(28px, 3.6vw, 38px);
            color: var(--text-light);
            margin-bottom: 12px;
            position: relative;
        }
        .cta-block p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-block .btn-primary {
            font-size: 18px;
            padding: 18px 48px;
            position: relative;
        }
        @media (max-width: 640px) {
            .cta-block { padding: 40px 24px; }
            .cta-block .btn-primary { font-size: 15px; padding: 14px 32px; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-muted);
            padding: 48px 0 28px;
            border-top: 1px solid var(--border-light);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .footer-brand h3 span { color: var(--accent); }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 10px;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
        }
        .footer-bottom a { color: var(--accent); }
        .footer-bottom a:hover { text-decoration: underline; }
        @media (max-width: 900px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar { width: 8px; height: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: var(--accent-dark); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--accent); }

        /* ===== 移动端导航抽屉 ===== */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100%;
            background: var(--primary);
            z-index: 2000;
            padding: 24px;
            transition: right 0.4s cubic-bezier(0.4,0,0.2,1);
            box-shadow: -8px 0 40px rgba(0,0,0,0.40);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .mobile-drawer.open { right: 0; }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.50);
            z-index: 1999;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.4s ease;
        }
        .drawer-overlay.show { opacity: 1; pointer-events: auto; }
        .drawer-close {
            align-self: flex-end;
            color: var(--text-light);
            font-size: 24px;
            padding: 4px 8px;
        }
        .drawer-nav a {
            display: block;
            padding: 12px 0;
            color: var(--text-muted);
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid var(--border-light);
        }
        .drawer-nav a.active { color: var(--accent); }
        .drawer-nav a i { margin-right: 10px; width: 20px; text-align: center; }
        .drawer-search {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.08);
            border: 1px solid var(--border-light);
            border-radius: 40px;
            padding: 0 16px;
            height: 44px;
        }
        .drawer-search input {
            background: transparent;
            border: none;
            color: var(--text-light);
            padding: 0 8px;
            width: 100%;
            height: 100%;
            font-size: 14px;
        }
        .drawer-search input::placeholder { color: var(--text-muted); }
        .drawer-search i { color: var(--text-muted); }

        /* ===== 其他辅助 ===== */
        .text-accent { color: var(--accent); }
        .text-center { text-align: center; }
        .mt-8 { margin-top: 32px; }
        .gap-4 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        @media (max-width: 768px) {
            .section-header h2 { font-size: 26px; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-dark: #0d1b2a;
            --bg-mid: #1b2d45;
            --bg-card: #ffffff;
            --bg-section: #f8f9fa;
            --bg-footer: #0d1b2a;
            --text-light: #ffffff;
            --text-dark: #1a1a2e;
            --text-muted: #8a9bb5;
            --text-body: #2d3748;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-light: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --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, 0.15);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 140px;
        }

        /* ===== 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-body);
            background: var(--bg-section);
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: var(--text-dark);
            font-weight: 700;
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg-dark);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            flex-wrap: wrap;
            gap: 8px 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.5px;
        }
        .logo span {
            color: var(--primary);
        }
        .logo i {
            font-size: 28px;
            color: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-actions .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50px;
            padding: 4px 16px 4px 4px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .header-actions .search-box input {
            background: transparent;
            border: none;
            color: var(--text-light);
            padding: 8px 12px;
            width: 160px;
            font-size: 14px;
        }
        .header-actions .search-box input::placeholder {
            color: var(--text-muted);
        }
        .header-actions .search-box button {
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 14px;
            transition: var(--transition);
        }
        .header-actions .search-box button:hover {
            background: var(--primary-dark);
            transform: scale(1.05);
        }
        .header-actions .cta-btn {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .header-actions .cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }
        .nav-tabs {
            background: rgba(255, 255, 255, 0.03);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 8px 0;
            display: flex;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 50px;
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: var(--transition);
            background: transparent;
            border: 1px solid transparent;
        }
        .nav-tabs a i {
            font-size: 15px;
        }
        .nav-tabs a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.08);
        }
        .nav-tabs a.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.25);
        }

        /* ===== Article Page Hero ===== */
        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 0%, rgba(13, 27, 42, 0.70) 100%);
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a {
            color: var(--text-muted);
        }
        .article-hero .breadcrumb a:hover {
            color: var(--primary-light);
        }
        .article-hero .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.2);
        }
        .article-hero .breadcrumb .current {
            color: var(--text-light);
        }
        .article-hero h1 {
            font-size: clamp(28px, 4vw, 48px);
            color: var(--text-light);
            max-width: 900px;
            line-height: 1.2;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }
        .article-hero .meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .article-hero .meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero .meta .badge {
            background: var(--primary);
            color: #fff;
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-md);
        }
        .article-body .content {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-body .content p {
            margin-bottom: 20px;
        }
        .article-body .content h2 {
            font-size: 24px;
            margin: 40px 0 16px;
            color: var(--text-dark);
        }
        .article-body .content h3 {
            font-size: 20px;
            margin: 32px 0 12px;
            color: var(--text-dark);
        }
        .article-body .content ul,
        .article-body .content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }
        .article-body .content ul li {
            list-style: disc;
            margin-bottom: 8px;
        }
        .article-body .content ol li {
            list-style: decimal;
            margin-bottom: 8px;
        }
        .article-body .content img {
            margin: 24px 0;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(230, 57, 70, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-muted);
        }
        .article-body .content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content a:hover {
            color: var(--primary-dark);
        }
        .article-body .not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-body .not-found i {
            font-size: 60px;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: block;
        }
        .article-body .not-found h2 {
            font-size: 28px;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .article-body .not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-body .not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-body .not-found .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }

        /* ===== Article Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 18px;
            margin-bottom: 16px;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--primary);
        }
        .sidebar-card .related-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-card .related-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-body);
            font-size: 14px;
            line-height: 1.4;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sidebar-card .related-list a:last-child {
            border-bottom: none;
        }
        .sidebar-card .related-list a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .sidebar-card .related-list a .num {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bg-section);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            color: var(--text-muted);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .sidebar-card .related-list a .num.top {
            background: var(--primary);
            color: #fff;
        }
        .sidebar-card .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-card .tag-cloud a {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: var(--bg-section);
            color: var(--text-muted);
            font-size: 13px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sidebar-card .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .sidebar-card .cta-mini {
            background: linear-gradient(135deg, var(--secondary), var(--bg-mid));
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            color: var(--text-light);
        }
        .sidebar-card .cta-mini h4 {
            color: #fff;
            font-size: 18px;
            margin-bottom: 8px;
        }
        .sidebar-card .cta-mini p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .sidebar-card .cta-mini .btn {
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .sidebar-card .cta-mini .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        /* ===== Related Articles Section ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg-section);
        }
        .related-section .section-title {
            font-size: 28px;
            text-align: center;
            margin-bottom: 40px;
            color: var(--text-dark);
        }
        .related-section .section-title span {
            color: var(--primary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .related-grid .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-grid .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-grid .card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-grid .card .card-body {
            padding: 20px;
        }
        .related-grid .card .card-body .cat {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-grid .card .card-body h4 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .related-grid .card .card-body h4 a {
            color: var(--text-dark);
        }
        .related-grid .card .card-body h4 a:hover {
            color: var(--primary);
        }
        .related-grid .card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-grid .card .card-body .meta-sm {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 60px 0 80px;
            background: var(--bg-card);
        }
        .faq-section .section-title {
            font-size: 28px;
            text-align: center;
            margin-bottom: 40px;
        }
        .faq-section .section-title span {
            color: var(--primary);
        }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-section);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 16px;
        }
        .faq-item .faq-q i {
            color: var(--primary);
            transition: var(--transition);
        }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-a {
            display: block;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.88) 0%, rgba(13, 27, 42, 0.75) 100%);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(24px, 3.5vw, 40px);
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-section .btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .cta-section .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }
        .cta-section .btn-outline {
            background: transparent;
            color: var(--text-light);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            border: 2px solid rgba(255, 255, 255, 0.2);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .cta-section .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(230, 57, 70, 0.1);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer);
            color: var(--text-muted);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .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, 0.04);
        }
        .footer-brand h3 {
            font-size: 24px;
            color: var(--text-light);
            font-weight: 800;
        }
        .footer-brand h3 span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 12px;
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 120px;
            }
            .header-inner {
                padding: 8px 0;
            }
            .logo {
                font-size: 20px;
            }
            .header-actions .search-box input {
                width: 100px;
            }
            .header-actions .cta-btn span {
                display: none;
            }
            .nav-tabs a {
                padding: 6px 14px;
                font-size: 13px;
            }
            .article-hero {
                padding: 48px 0 36px;
            }
            .article-hero h1 {
                font-size: 24px;
            }
            .article-body {
                padding: 24px 20px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
            }
            .header-actions {
                justify-content: space-between;
            }
            .header-actions .search-box input {
                width: 80px;
                font-size: 13px;
            }
            .nav-tabs a {
                padding: 6px 12px;
                font-size: 12px;
            }
            .nav-tabs a i {
                font-size: 13px;
            }
            .article-hero h1 {
                font-size: 20px;
            }
            .article-hero .meta {
                font-size: 12px;
                gap: 10px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-body {
                padding: 16px;
            }
            .sidebar-card {
                padding: 20px;
            }
            .faq-item .faq-q {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-item .faq-a {
                font-size: 14px;
                padding: 0 16px 14px;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #1243af;
            --primary-light: #e8effd;
            --primary-gradient: linear-gradient(135deg, #1a56db 0%, #0f3a9e 100%);
            --secondary: #f59e0b;
            --secondary-light: #fef3c7;
            --accent: #10b981;
            --accent-light: #d1fae5;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-card: #ffffff;
            --text-dark: #0f172a;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.14);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: 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-text-size-adjust: 100%;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.25;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
        }

        /* ===== Utility ===== */
        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2.2rem;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 48px auto;
            text-align: center;
        }

        .text-center {
            text-align: center;
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 16px;
        }

        .badge-secondary {
            background: var(--secondary-light);
            color: var(--secondary);
        }

        .badge-accent {
            background: var(--accent-light);
            color: var(--accent);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            position: relative;
            overflow: hidden;
        }
        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.30);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 86, 219, 0.40);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.25);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--border);
            color: var(--text-main);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-secondary {
            background: var(--bg-white);
            color: var(--text-dark);
            box-shadow: var(--shadow-sm);
        }
        .btn-secondary:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            color: var(--text-dark);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        /* ===== Header & Navigation (频道Tabs双层导航) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            transition: background var(--transition);
        }

        .site-header .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 56px;
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .site-header .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .site-header .logo span {
            color: var(--primary);
        }
        .site-header .logo i {
            font-size: 1.2rem;
            color: var(--primary);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-actions .search-btn,
        .header-actions .menu-toggle {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            background: transparent;
            transition: all var(--transition);
            font-size: 1rem;
        }
        .header-actions .search-btn:hover,
        .header-actions .menu-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* 频道 Tabs 导航 */
        .nav-tabs-wrapper {
            border-top: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.50);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-tabs-wrapper::-webkit-scrollbar {
            display: none;
        }

        .nav-tabs {
            display: flex;
            gap: 4px;
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
            height: 44px;
            align-items: center;
        }
        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }
        .nav-tabs a i {
            font-size: 0.8rem;
        }
        .nav-tabs a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-tabs a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-tabs a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }

        /* 移动端菜单抽屉 */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100vh;
            background: var(--bg-white);
            box-shadow: -8px 0 40px rgba(0, 0, 0, 0.10);
            z-index: 1100;
            padding: 24px 20px;
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .mobile-drawer .drawer-header .logo {
            font-size: 1.2rem;
            font-weight: 800;
        }
        .mobile-drawer .drawer-header .logo span {
            color: var(--primary);
        }
        .mobile-drawer .drawer-close {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--border-light);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .mobile-drawer .drawer-close:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-drawer a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-main);
            font-weight: 500;
            transition: all var(--transition);
            margin-bottom: 2px;
        }
        .mobile-drawer a i {
            width: 20px;
            color: var(--text-muted);
        }
        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-drawer a.active i {
            color: var(--primary);
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.30);
            z-index: 1050;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }
        .drawer-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }

        /* 搜索弹窗 */
        .search-modal {
            position: fixed;
            inset: 0;
            z-index: 1200;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.50);
            backdrop-filter: blur(4px);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .search-modal.open {
            opacity: 1;
            pointer-events: auto;
        }
        .search-modal .search-panel {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 28px 28px;
            width: 90%;
            max-width: 560px;
            box-shadow: var(--shadow-xl);
            transform: scale(0.95) translateY(10px);
            transition: transform 0.3s ease;
        }
        .search-modal.open .search-panel {
            transform: scale(1) translateY(0);
        }
        .search-modal .search-panel input {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid var(--border);
            border-radius: var(--radius-md);
            font-size: 1.05rem;
            outline: none;
            transition: border var(--transition);
        }
        .search-modal .search-panel input:focus {
            border-color: var(--primary);
        }
        .search-modal .search-panel .search-close {
            margin-top: 16px;
            display: flex;
            justify-content: flex-end;
        }
        .search-modal .search-panel .search-close button {
            padding: 8px 20px;
            border-radius: 50px;
            background: var(--border-light);
            color: var(--text-muted);
            font-weight: 500;
            transition: all var(--transition);
        }
        .search-modal .search-panel .search-close button:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Hero Banner (分类页) ===== */
        .category-hero {
            margin-top: calc(var(--header-height) + 44px);
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .category-hero:hover .hero-bg {
            transform: scale(1.00);
        }
        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(15, 23, 42, 0.60) 60%, rgba(15, 23, 42, 0.30) 100%);
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            padding: 60px 0 56px;
            color: #fff;
            max-width: 780px;
        }
        .category-hero .hero-content .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 20px;
        }
        .category-hero .hero-content .breadcrumb a {
            color: rgba(255, 255, 255, 0.70);
        }
        .category-hero .hero-content .breadcrumb a:hover {
            color: #fff;
        }
        .category-hero .hero-content .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
        }
        .category-hero .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.03em;
            margin-bottom: 16px;
            line-height: 1.15;
        }
        .category-hero .hero-content h1 span {
            color: var(--secondary);
        }
        .category-hero .hero-content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .category-hero .hero-content .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .category-hero .hero-content .hero-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(4px);
            color: rgba(255, 255, 255, 0.80);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .category-hero .hero-content .hero-tags span i {
            color: var(--secondary);
        }

        @media (max-width: 768px) {
            .category-hero {
                min-height: 260px;
            }
            .category-hero .hero-content h1 {
                font-size: 2rem;
            }
            .category-hero .hero-content p {
                font-size: 1rem;
            }
            .category-hero .hero-content {
                padding: 40px 0 36px;
            }
        }
        @media (max-width: 520px) {
            .category-hero .hero-content h1 {
                font-size: 1.6rem;
            }
            .category-hero .hero-content .hero-tags span {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
        }

        /* ===== Guide Steps (核心指南步骤) ===== */
        .guide-steps {
            padding: 80px 0 60px;
            background: var(--bg-white);
        }
        .guide-steps .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 16px;
        }
        .guide-steps .step-card {
            background: var(--bg-body);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            position: relative;
        }
        .guide-steps .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            background: var(--bg-white);
        }
        .guide-steps .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 18px;
        }
        .guide-steps .step-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        .guide-steps .step-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .guide-steps .step-card .step-detail {
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }
        .guide-steps .step-card .step-detail a {
            color: var(--primary);
            font-weight: 500;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .guide-steps .step-card .step-detail a i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }
        .guide-steps .step-card .step-detail a:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 1024px) {
            .guide-steps .steps-grid {
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .guide-steps .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .guide-steps {
                padding: 56px 0 40px;
            }
        }

        /* ===== Platform Cards (多平台接入) ===== */
        .platform-section {
            padding: 80px 0;
            background: var(--bg-body);
        }
        .platform-section .platform-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .platform-section .platform-card {
            display: flex;
            flex-direction: row;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .platform-section .platform-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .platform-section .platform-card .platform-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            flex-shrink: 0;
            background: var(--primary-gradient);
        }
        .platform-section .platform-card .platform-icon.web {
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
        }
        .platform-section .platform-card .platform-icon.mobile {
            background: linear-gradient(135deg, #8b5cf6, #6d28d9);
        }
        .platform-section .platform-card .platform-icon.api {
            background: linear-gradient(135deg, #10b981, #059669);
        }
        .platform-section .platform-card .platform-icon.mini {
            background: linear-gradient(135deg, #f59e0b, #d97706);
        }
        .platform-section .platform-card .platform-info h3 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .platform-section .platform-card .platform-info p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .platform-section .platform-card .platform-info .platform-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .platform-section .platform-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .platform-section {
                padding: 56px 0;
            }
            .platform-section .platform-card {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== Security Feature (安全特性) ===== */
        .security-section {
            padding: 80px 0;
            background: var(--bg-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .security-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.10;
        }
        .security-section .container {
            position: relative;
            z-index: 2;
        }
        .security-section .section-title {
            color: #fff;
        }
        .security-section .section-subtitle {
            color: rgba(255, 255, 255, 0.60);
        }
        .security-section .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 16px;
        }
        .security-section .security-item {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition);
        }
        .security-section .security-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }
        .security-section .security-item .sec-icon {
            font-size: 2rem;
            color: var(--secondary);
            margin-bottom: 14px;
        }
        .security-section .security-item h4 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .security-section .security-item p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .security-section .security-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .security-section .security-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .security-section {
                padding: 56px 0;
            }
        }

        /* ===== FAQ (常见问题) ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-white);
        }
        .faq-section .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-section .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-section .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-section .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            background: var(--bg-body);
            cursor: pointer;
            transition: background var(--transition);
        }
        .faq-section .faq-item .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-section .faq-item .faq-question i {
            color: var(--text-muted);
            transition: transform var(--transition);
            font-size: 0.85rem;
        }
        .faq-section .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-section .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            background: var(--bg-white);
        }
        .faq-section .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 16px 24px 20px;
        }

        @media (max-width: 768px) {
            .faq-section {
                padding: 56px 0;
            }
            .faq-section .faq-item .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-section .faq-item .faq-answer {
                padding: 0 16px;
                font-size: 0.9rem;
            }
            .faq-section .faq-item.active .faq-answer {
                padding: 12px 16px 16px;
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--primary-gradient);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-section .cta-buttons .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
        }
        .cta-section .cta-buttons .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
            color: var(--primary-dark);
        }
        .cta-section .cta-buttons .btn-ghost-white {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.30);
            color: #fff;
        }
        .cta-section .cta-buttons .btn-ghost-white:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-3px);
            color: #fff;
        }

        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
            .cta-section {
                padding: 56px 0;
            }
        }

        /* ===== 图文内容区块 (Cover Image + Text) ===== */
        .content-block {
            padding: 80px 0;
            background: var(--bg-white);
        }
        .content-block .content-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .content-block .content-row.reverse {
            direction: rtl;
        }
        .content-block .content-row.reverse>* {
            direction: ltr;
        }
        .content-block .content-text h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .content-block .content-text p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .content-block .content-text ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }
        .content-block .content-text ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-main);
            font-size: 0.95rem;
        }
        .content-block .content-text ul li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }
        .content-block .content-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .content-block .content-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }
        .content-block .content-image:hover img {
            transform: scale(1.03);
        }

        @media (max-width: 768px) {
            .content-block .content-row {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .content-block .content-row.reverse {
                direction: ltr;
            }
            .content-block .content-text h2 {
                font-size: 1.4rem;
            }
            .content-block {
                padding: 56px 0;
            }
        }

        /* ===== 统计数据条 ===== */
        .stats-bar {
            padding: 48px 0;
            background: var(--bg-body);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .stats-bar .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stats-bar .stats-grid .stat-item .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .stats-bar .stats-grid .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stats-bar .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-bar .stats-grid .stat-item .stat-number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .stats-bar .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }

        /* ===== Footer (已提供模板 + 定制) ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.70);
            padding: 60px 0 0;
        }
        .site-footer .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);
        }
        .site-footer .footer-brand h3 {
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand h3 span {
            color: var(--secondary);
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.50);
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .site-footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: all var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--secondary);
        }
        .site-footer .footer-bottom span a {
            margin: 0 4px;
        }

        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 页面内边距补偿 ===== */
        body {
            padding-top: calc(var(--header-height) + 44px);
        }
        @media (max-width: 768px) {
            body {
                padding-top: calc(var(--header-height) + 44px);
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--border-light);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--text-light);
            border-radius: 6px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== Selection ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 520px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .nav-tabs a {
                font-size: 0.78rem;
                padding: 4px 12px;
            }
            .nav-tabs a i {
                font-size: 0.7rem;
            }
        }