/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b3d;
            --primary-light: #1a2d6b;
            --primary-dark: #080f24;
            --accent: #d4a843;
            --accent-light: #e8c06a;
            --accent-dark: #b8892e;
            --bg-light: #f4f6fc;
            --bg-white: #ffffff;
            --bg-dark: #0a122e;
            --text-dark: #1a1a2e;
            --text-body: #2d3a4a;
            --text-muted: #7a8a9e;
            --text-light: #f0f2f8;
            --border: #e2e6ef;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(15, 27, 61, 0.08);
            --shadow-md: 0 8px 30px rgba(15, 27, 61, 0.12);
            --shadow-lg: 0 20px 60px rgba(15, 27, 61, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 80px;
            --tab-height: 68px;
        }

        /* ===== 基础 Reset ===== */
        *, *::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-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: var(--tab-height);
        }
        @media (min-width: 769px) { body { padding-bottom: 0; } }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover, a:focus { color: var(--accent); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); line-height: 1.3; font-weight: 700; }
        p { margin-bottom: 1rem; }
        .clearfix::after { content: ''; display: table; clear: both; }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 520px) { .container { padding: 0 16px; } }

        .section {
            padding: 80px 0;
        }
        @media (max-width: 768px) { .section { padding: 56px 0; } }
        @media (max-width: 520px) { .section { padding: 40px 0; } }

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-title p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto;
        }
        @media (max-width: 768px) { .section-title h2 { font-size: 1.7rem; } .section-title p { font-size: 1rem; } }
        @media (max-width: 520px) { .section-title h2 { font-size: 1.4rem; } }

        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            border-radius: 4px;
            margin: 16px auto 24px;
        }

        /* ===== 导航 Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 27, 61, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(212, 168, 67, 0.15);
            height: var(--header-height);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-logo i {
            color: var(--accent);
            font-size: 1.8rem;
        }
        .site-logo:hover { color: var(--accent); }
        .site-logo span { color: var(--accent); }

        .main-nav { display: flex; align-items: center; gap: 8px; }
        .main-nav a {
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(240, 242, 248, 0.8);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover, .main-nav a:focus { color: var(--text-light); background: rgba(212, 168, 67, 0.12); }
        .main-nav a.active {
            color: var(--accent);
            background: rgba(212, 168, 67, 0.15);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .main-nav .nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary-dark) !important;
            font-weight: 700;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 15px rgba(212, 168, 67, 0.3);
        }
        .main-nav .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(212, 168, 67, 0.4); background: linear-gradient(135deg, var(--accent-light), var(--accent)); }

        .mobile-toggle { display: none; font-size: 1.6rem; color: var(--text-light); cursor: pointer; background: none; border: none; padding: 4px; }
        @media (max-width: 768px) {
            .main-nav { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(15, 27, 61, 0.98); flex-direction: column; padding: 20px; gap: 4px; border-bottom: 2px solid var(--accent); }
            .main-nav.open { display: flex; }
            .main-nav a { width: 100%; padding: 14px 20px; font-size: 1.05rem; }
            .main-nav .nav-cta { text-align: center; }
            .mobile-toggle { display: block; }
        }

        /* ===== 底部 Tab 导航 (移动端) ===== */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1100;
            background: rgba(15, 27, 61, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid rgba(212, 168, 67, 0.15);
            height: var(--tab-height);
            padding: 4px 0 env(safe-area-inset-bottom, 0);
        }
        .bottom-tab-nav .tab-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            max-width: 600px;
            margin: 0 auto;
        }
        .bottom-tab-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            color: rgba(240, 242, 248, 0.6);
            font-size: 0.7rem;
            font-weight: 500;
            transition: var(--transition);
            min-width: 64px;
        }
        .bottom-tab-nav a i { font-size: 1.4rem; }
        .bottom-tab-nav a:hover, .bottom-tab-nav a:focus { color: var(--text-light); background: rgba(212, 168, 67, 0.08); }
        .bottom-tab-nav a.active { color: var(--accent); }
        .bottom-tab-nav a.active i { text-shadow: 0 0 20px rgba(212, 168, 67, 0.3); }
        @media (max-width: 768px) { .bottom-tab-nav { display: block; } }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-dark);
            overflow: hidden;
            padding-top: var(--header-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
            filter: saturate(0.7) brightness(0.6);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(15, 27, 61, 0.6) 0%, rgba(8, 15, 36, 0.85) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
            padding: 40px 24px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(212, 168, 67, 0.18);
            border: 1px solid rgba(212, 168, 67, 0.3);
            color: var(--accent-light);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 2px;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: 3.4rem;
            font-weight: 900;
            color: var(--text-light);
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
            text-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }
        .hero h1 span { color: var(--accent); }
        .hero-sub {
            font-size: 1.25rem;
            color: rgba(240, 242, 248, 0.85);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.8;
            text-shadow: 0 2px 20px rgba(0,0,0,0.2);
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary-dark);
            box-shadow: 0 8px 30px rgba(212, 168, 67, 0.35);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(212, 168, 67, 0.45); background: linear-gradient(135deg, var(--accent-light), var(--accent)); }
        .btn-primary:active { transform: translateY(-1px); }
        .btn-outline {
            background: transparent;
            color: var(--text-light);
            border: 2px solid rgba(240, 242, 248, 0.4);
        }
        .btn-outline:hover { background: rgba(240, 242, 248, 0.1); border-color: var(--accent); color: var(--accent); transform: translateY(-3px); }
        .btn-outline:active { transform: translateY(-1px); }
        .btn-lg { padding: 18px 48px; font-size: 1.1rem; border-radius: var(--radius); }
        @media (max-width: 768px) {
            .hero { min-height: 80vh; }
            .hero h1 { font-size: 2.2rem; }
            .hero-sub { font-size: 1.05rem; }
            .btn-lg { padding: 14px 32px; font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.7rem; }
            .hero-sub { font-size: 0.95rem; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn { width: 100%; justify-content: center; }
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid rgba(240, 242, 248, 0.1);
        }
        .hero-stat-item { text-align: center; }
        .hero-stat-item .num { font-size: 2rem; font-weight: 800; color: var(--accent); display: block; }
        .hero-stat-item .label { font-size: 0.85rem; color: rgba(240, 242, 248, 0.6); margin-top: 4px; }
        @media (max-width: 520px) { .hero-stats { gap: 24px; } .hero-stat-item .num { font-size: 1.5rem; } }

        /* ===== 优势板块 ===== */
        .advantages { background: var(--bg-white); }
        .adv-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .adv-card {
            background: var(--bg-light);
            padding: 36px 24px 28px;
            border-radius: var(--radius);
            text-align: center;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .adv-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--accent); }
        .adv-card .icon {
            font-size: 2.6rem;
            color: var(--accent);
            margin-bottom: 18px;
            display: block;
        }
        .adv-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; color: var(--primary); }
        .adv-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }
        @media (max-width: 900px) { .adv-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .adv-grid { grid-template-columns: 1fr; } .adv-card { padding: 28px 20px; } }

        /* ===== 平台特色 (图文) ===== */
        .features { background: var(--bg-light); }
        .feature-block {
            display: flex;
            align-items: center;
            gap: 60px;
            margin-bottom: 60px;
        }
        .feature-block:last-child { margin-bottom: 0; }
        .feature-block.reverse { flex-direction: row-reverse; }
        .feature-image {
            flex: 1 1 48%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: var(--primary-dark);
        }
        .feature-image img { width: 100%; height: auto; display: block; transition: var(--transition); }
        .feature-image:hover img { transform: scale(1.03); }
        .feature-text {
            flex: 1 1 48%;
        }
        .feature-text .tag {
            display: inline-block;
            background: rgba(212, 168, 67, 0.15);
            color: var(--accent-dark);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .feature-text h3 { font-size: 1.8rem; font-weight: 800; color: var(--primary); margin-bottom: 16px; }
        .feature-text p { font-size: 1rem; color: var(--text-body); line-height: 1.8; margin-bottom: 16px; }
        .feature-text ul { margin-top: 12px; }
        .feature-text ul li {
            padding: 6px 0 6px 28px;
            position: relative;
            font-size: 0.95rem;
            color: var(--text-body);
        }
        .feature-text ul li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 6px;
            color: var(--accent);
        }
        @media (max-width: 860px) {
            .feature-block, .feature-block.reverse { flex-direction: column; gap: 32px; }
            .feature-image, .feature-text { flex: 1 1 100%; }
            .feature-text h3 { font-size: 1.4rem; }
        }

        /* ===== 最新资讯 (CMS 列表) ===== */
        .news-section { background: var(--bg-white); }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg-light);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--accent); }
        .news-card .thumb {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            background: var(--primary-dark);
        }
        .news-card .body { padding: 20px 22px 24px; }
        .news-card .cat {
            display: inline-block;
            background: rgba(212, 168, 67, 0.12);
            color: var(--accent-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 30px;
            margin-bottom: 10px;
        }
        .news-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; color: var(--primary); }
        .news-card h3 a { color: inherit; }
        .news-card h3 a:hover { color: var(--accent); }
        .news-card .excerpt { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 12px; }
        .news-card .meta { font-size: 0.78rem; color: var(--text-muted); display: flex; align-items: center; gap: 16px; }
        .news-card .meta i { margin-right: 4px; }
        @media (max-width: 860px) { .news-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .news-grid { grid-template-columns: 1fr; } .news-card .thumb { height: 180px; } }

        .empty-news {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--bg-light);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .empty-news i { font-size: 2.4rem; color: var(--accent); margin-bottom: 16px; display: block; }

        /* ===== 使用流程 ===== */
        .steps { background: var(--bg-light); }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step-counter;
        }
        .step-card {
            background: var(--bg-white);
            padding: 36px 20px 28px;
            border-radius: var(--radius);
            text-align: center;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            counter-increment: step-counter;
        }
        .step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .step-card .step-num {
            width: 52px;
            height: 52px;
            line-height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--accent);
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 auto 18px;
            box-shadow: 0 6px 20px rgba(15, 27, 61, 0.2);
        }
        .step-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
        .step-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }
        .step-card .step-num::after { content: counter(step-counter); }
        @media (max-width: 860px) { .steps-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .steps-grid { grid-template-columns: 1fr; } }

        /* ===== 用户评价 / 社会认同 ===== */
        .testimonials { background: var(--primary-dark); position: relative; overflow: hidden; }
        .testimonials::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .testimonials .container { position: relative; z-index: 1; }
        .testimonials .section-title h2 { color: var(--text-light); }
        .testimonials .section-title p { color: rgba(240, 242, 248, 0.6); }
        .testimonials .section-divider { background: linear-gradient(90deg, var(--accent), var(--accent-light)); }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .testi-card {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(212, 168, 67, 0.12);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            transition: var(--transition);
        }
        .testi-card:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(212, 168, 67, 0.25); transform: translateY(-4px); }
        .testi-card .stars { color: var(--accent); font-size: 0.9rem; margin-bottom: 14px; letter-spacing: 2px; }
        .testi-card .quote { font-size: 0.95rem; color: rgba(240, 242, 248, 0.85); line-height: 1.8; margin-bottom: 18px; font-style: italic; }
        .testi-card .author { display: flex; align-items: center; gap: 12px; }
        .testi-card .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
        }
        .testi-card .name { font-size: 0.9rem; font-weight: 600; color: var(--text-light); }
        .testi-card .role { font-size: 0.78rem; color: rgba(240, 242, 248, 0.5); }
        @media (max-width: 860px) { .testimonial-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .testimonial-grid { grid-template-columns: 1fr; } }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-white); }
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
        .faq-q {
            padding: 18px 24px;
            background: var(--bg-light);
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition);
            user-select: none;
        }
        .faq-q:hover { background: rgba(212, 168, 67, 0.06); }
        .faq-q i { color: var(--accent); font-size: 1.1rem; transition: var(--transition); }
        .faq-item.open .faq-q i { transform: rotate(180deg); }
        .faq-a {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 16px 24px 20px;
        }
        .faq-a p { font-size: 0.95rem; color: var(--text-body); line-height: 1.8; margin-bottom: 0; }
        @media (max-width: 520px) {
            .faq-q { padding: 14px 16px; font-size: 0.92rem; }
            .faq-item.open .faq-a { padding: 12px 16px 16px; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.07;
            z-index: 0;
        }
        .cta-section .container { position: relative; z-index: 1; text-align: center; }
        .cta-section h2 { font-size: 2.4rem; font-weight: 800; color: var(--text-light); margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; color: rgba(240, 242, 248, 0.75); max-width: 600px; margin: 0 auto 32px; }
        .cta-section .btn-primary { font-size: 1.1rem; padding: 16px 44px; }
        @media (max-width: 768px) { .cta-section h2 { font-size: 1.7rem; } .cta-section p { font-size: 1rem; } }
        @media (max-width: 520px) { .cta-section h2 { font-size: 1.4rem; } }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(240, 242, 248, 0.6);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .site-logo { margin-bottom: 12px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.8; color: rgba(240, 242, 248, 0.55); max-width: 360px; }
        .footer-col h4 { font-size: 1rem; font-weight: 700; color: var(--text-light); margin-bottom: 16px; }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: rgba(240, 242, 248, 0.55);
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(240, 242, 248, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(240, 242, 248, 0.35);
        }
        .footer-bottom a { color: rgba(240, 242, 248, 0.45); }
        .footer-bottom a:hover { color: var(--accent); }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } .footer-brand { grid-column: 1 / -1; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; gap: 24px; } }

        /* ===== 辅助类 ===== */
        .text-center { text-align: center; }
        .mb-0 { margin-bottom: 0; }
        .mt-1 { margin-top: 12px; }
        .mt-2 { margin-top: 24px; }
        .gap-1 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== 图片占位 ===== */
        .img-placeholder {
            background: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(240, 242, 248, 0.3);
            font-size: 0.85rem;
            min-height: 180px;
        }

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

        /* ===== Foundation 覆盖 ===== */
        .row { max-width: var(--max-width); }
        .site-header .row { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: 100%; }
        @media (max-width: 520px) { .site-header .row { padding: 0 16px; } }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #d4a843;
            --primary-dark: #b8922e;
            --primary-light: #e8c76a;
            --primary-gradient: linear-gradient(135deg, #d4a843 0%, #e8c76a 50%, #d4a843 100%);
            --secondary: #1a1a2e;
            --secondary-light: #2d2d4a;
            --accent: #e74c3c;
            --accent-light: #f1948a;
            --bg-dark: #0d0d1a;
            --bg-section: #f8f6f0;
            --bg-card: #ffffff;
            --bg-soft: #f0ede5;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8888aa;
            --text-white: #ffffff;
            --border-color: #e0ddd5;
            --border-light: #f0ede5;
            --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 30px rgba(212,168,67,0.20);
            --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: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --tab-height: 64px;
        }

        /* ===== 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: 1.75;
            color: var(--text-primary);
            background: var(--bg-dark);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: var(--tab-height);
        }
        @media (min-width: 1024px) { body { padding-bottom: 0; } }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: clamp(1.8rem, 4vw, 3.2rem); }
        h2 { font-size: clamp(1.4rem, 3vw, 2.4rem); }
        h3 { font-size: clamp(1.1rem, 2vw, 1.6rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1.2rem; color: var(--text-secondary); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 640px) { .container { padding: 0 16px; } }
        .section-padding { padding: 80px 0; }
        @media (max-width: 768px) { .section-padding { padding: 48px 0; } }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
            margin-bottom: 16px;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 2px;
            margin: 12px auto 0;
        }
        .section-title p {
            max-width: 600px;
            margin: 0 auto;
            color: var(--text-light);
            font-size: 1.05rem;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 1px;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 1.6rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover { color: var(--primary); }
        .main-nav { display: flex; align-items: center; gap: 8px; }
        .main-nav a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a i { margin-right: 6px; font-size: 0.85rem; }
        .main-nav a:hover { color: var(--text-white); background: rgba(255,255,255,0.08); }
        .main-nav a.active {
            color: var(--text-white);
            background: rgba(212,168,67,0.15);
            box-shadow: inset 0 0 0 1px rgba(212,168,67,0.25);
        }
        .main-nav a.nav-cta {
            background: var(--primary-gradient);
            color: #1a1a2e;
            font-weight: 700;
            padding: 8px 24px;
            box-shadow: 0 4px 20px rgba(212,168,67,0.30);
        }
        .main-nav a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(212,168,67,0.45);
            background: linear-gradient(135deg, #e8c76a 0%, #d4a843 100%);
        }
        @media (max-width: 1023px) {
            .site-header .main-nav { display: none; }
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-tab-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1001;
            background: rgba(13, 13, 26, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: var(--tab-height);
            padding: 0 8px;
            display: none;
        }
        @media (max-width: 1023px) {
            .mobile-tab-bar { display: flex; }
        }
        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: 12px;
            color: rgba(255,255,255,0.5);
            font-size: 0.6rem;
            font-weight: 500;
            transition: var(--transition);
            min-width: 60px;
            text-decoration: none;
        }
        .tab-item i { font-size: 1.2rem; transition: var(--transition); }
        .tab-item span { font-size: 0.6rem; line-height: 1.2; }
        .tab-item:hover { color: var(--text-white); background: rgba(255,255,255,0.05); }
        .tab-item.active { color: var(--primary); }
        .tab-item.active i { text-shadow: 0 0 20px rgba(212,168,67,0.4); }
        .tab-item.tab-cta {
            background: var(--primary-gradient);
            color: #1a1a2e;
            font-weight: 700;
            padding: 6px 20px;
            border-radius: 20px;
            box-shadow: 0 4px 20px rgba(212,168,67,0.25);
        }
        .tab-item.tab-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(212,168,67,0.40);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 140px 0 60px;
            margin-top: 0;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13,13,26,0.85) 0%, rgba(13,13,26,0.60) 50%, rgba(13,13,26,0.95) 100%);
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 20px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.6); }
        .article-hero .breadcrumb a:hover { color: var(--primary); }
        .article-hero .breadcrumb span { color: rgba(255,255,255,0.8); }
        .article-hero .article-category {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(212,168,67,0.15);
            border: 1px solid rgba(212,168,67,0.30);
            color: var(--primary-light);
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .article-hero h1 {
            color: var(--text-white);
            font-size: clamp(1.6rem, 3.5vw, 2.8rem);
            max-width: 800px;
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .article-hero .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            color: rgba(255,255,255,0.5);
            font-size: 0.85rem;
        }
        .article-hero .article-meta i { margin-right: 6px; color: var(--primary); }
        .article-hero .article-meta span { display: flex; align-items: center; }

        /* ===== Article Content ===== */
        .article-content-section {
            background: var(--bg-section);
            padding: 60px 0 80px;
        }
        .article-content-wrapper {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 48px;
        }
        @media (max-width: 768px) {
            .article-content-wrapper { padding: 24px 20px; border-radius: var(--radius-md); }
        }
        .article-content-wrapper .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-content-wrapper .article-body p {
            margin-bottom: 1.6rem;
        }
        .article-content-wrapper .article-body h2,
        .article-content-wrapper .article-body h3,
        .article-content-wrapper .article-body h4 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .article-content-wrapper .article-body img {
            border-radius: var(--radius-md);
            margin: 2rem auto;
            box-shadow: var(--shadow-sm);
        }
        .article-content-wrapper .article-body ul,
        .article-content-wrapper .article-body ol {
            margin-bottom: 1.6rem;
            padding-left: 1.5rem;
        }
        .article-content-wrapper .article-body ul li {
            list-style: disc;
            margin-bottom: 0.5rem;
            color: var(--text-secondary);
        }
        .article-content-wrapper .article-body ol li {
            list-style: decimal;
            margin-bottom: 0.5rem;
            color: var(--text-secondary);
        }
        .article-content-wrapper .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 2rem 0;
            background: var(--bg-soft);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-content-wrapper .article-body a { font-weight: 600; }
        .article-content-wrapper .article-body a:hover { text-decoration: underline; }
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-box i { font-size: 3rem; color: var(--text-light); margin-bottom: 20px; }
        .not-found-box h3 { margin-bottom: 12px; }
        .not-found-box p { color: var(--text-light); margin-bottom: 24px; }
        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 40px;
            background: var(--primary-gradient);
            color: #1a1a2e;
            font-weight: 700;
        }
        .not-found-box .btn-back:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); }

        /* ===== Summary / Highlights ===== */
        .summary-section {
            background: var(--bg-dark);
            padding: 60px 0;
        }
        .summary-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        @media (max-width: 768px) {
            .summary-grid { grid-template-columns: 1fr; gap: 24px; }
        }
        .summary-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16 / 10;
        }
        .summary-text h2 {
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .summary-text h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background: var(--primary-gradient);
            border-radius: 2px;
            margin-top: 12px;
        }
        .summary-text p {
            color: rgba(255,255,255,0.7);
            font-size: 1.05rem;
            margin-bottom: 16px;
        }
        .summary-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .summary-tags .tag {
            padding: 6px 16px;
            border-radius: 40px;
            background: rgba(212,168,67,0.10);
            border: 1px solid rgba(212,168,67,0.20);
            color: var(--primary-light);
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/coverpic/cover-2.webp') center center / cover no-repeat;
            opacity: 0.10;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.7);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 40px;
            background: var(--primary-gradient);
            color: #1a1a2e;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 30px rgba(212,168,67,0.30);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(212,168,67,0.45);
            color: #1a1a2e;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 40px;
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.20);
            transition: var(--transition);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(212,168,67,0.08);
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--bg-section);
            padding: 80px 0;
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 0;
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-sans);
            transition: var(--transition);
        }
        .faq-question i { color: var(--primary); font-size: 0.85rem; transition: var(--transition); }
        .faq-item.active .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;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 640px) {
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
        }
        .footer-brand .site-logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.5);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a i { width: 20px; color: var(--primary); margin-right: 4px; }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.35);
            margin-bottom: 0;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--primary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-hero { padding: 120px 0 40px; }
            .article-content-wrapper { padding: 36px; }
        }
        @media (max-width: 768px) {
            .article-hero { padding: 100px 0 32px; }
            .article-hero h1 { font-size: 1.5rem; }
            .article-hero .article-meta { gap: 10px 16px; font-size: 0.8rem; }
            .article-content-section { padding: 32px 0 48px; }
            .article-content-wrapper { padding: 20px 16px; }
            .article-content-wrapper .article-body { font-size: 0.98rem; line-height: 1.8; }
            .cta-section { padding: 48px 0; }
            .faq-section { padding: 48px 0; }
            .section-padding { padding: 48px 0; }
            .summary-grid { gap: 20px; }
            .summary-text h2 { font-size: 1.4rem; }
            .footer-grid { gap: 24px; }
            .site-footer { padding: 40px 0 20px; }
        }
        @media (max-width: 520px) {
            .article-hero { padding: 90px 0 24px; }
            .article-hero h1 { font-size: 1.3rem; }
            .article-hero .breadcrumb { font-size: 0.75rem; gap: 4px; }
            .article-hero .article-category { font-size: 0.7rem; padding: 4px 14px; }
            .article-content-wrapper { padding: 16px 12px; border-radius: var(--radius-sm); }
            .btn-primary, .btn-secondary { width: 100%; justify-content: center; padding: 14px 20px; }
            .cta-buttons { flex-direction: column; }
            .faq-question { font-size: 0.9rem; padding: 14px 16px; }
            .faq-answer { padding: 0 16px; }
            .faq-item.active .faq-answer { padding: 0 16px 16px; }
            .summary-tags .tag { font-size: 0.7rem; padding: 4px 12px; }
        }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: var(--max-width); padding-left: 24px; padding-right: 24px; }
        @media (max-width: 640px) { .grid-container { padding-left: 16px; padding-right: 16px; } }
        .cell { margin-bottom: 0; }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-1 { gap: 1rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #d4a843;
            --primary-light: #e8c76a;
            --primary-dark: #b88d2e;
            --primary-gradient: linear-gradient(135deg, #d4a843 0%, #e8c76a 60%, #f0d88a 100%);
            --secondary: #1a1a2e;
            --secondary-light: #2d2d4a;
            --accent: #e85d3a;
            --accent-light: #f07a5a;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-light: #f8f6f0;
            --text-light: #f5f0e8;
            --text-muted: #a09888;
            --text-dark: #2d2a24;
            --border-glow: rgba(212, 168, 67, 0.25);
            --shadow-glow: 0 8px 32px rgba(212, 168, 67, 0.15);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.25);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-primary);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-light); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        p { margin-bottom: 1rem; }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 1.5rem; }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(212, 168, 67, 0.15);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(15, 15, 26, 0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.5); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding: 0 1.5rem;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: 0.5px;
        }
        .site-logo i { color: var(--primary); font-size: 1.4rem; }
        .site-logo:hover { color: var(--primary-light); }
        .main-nav { display: flex; align-items: center; gap: 0.25rem; }
        .main-nav a {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover { color: var(--text-light); background: rgba(212, 168, 67, 0.08); }
        .main-nav a.active { color: var(--primary); background: rgba(212, 168, 67, 0.12); }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--primary-gradient);
            border-radius: 2px;
        }
        .main-nav a.nav-cta {
            background: var(--primary-gradient);
            color: var(--bg-dark);
            font-weight: 700;
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-sm);
            box-shadow: 0 2px 12px rgba(212, 168, 67, 0.3);
        }
        .main-nav a.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(212, 168, 67, 0.4); }
        .nav-toggle { display: none; background: none; border: none; color: var(--text-light); font-size: 1.5rem; cursor: pointer; padding: 0.5rem; }

        /* ===== Bottom Tab (Mobile) ===== */
        .bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            z-index: 999;
            background: rgba(15, 15, 26, 0.96);
            backdrop-filter: blur(16px);
            border-top: 1px solid rgba(212, 168, 67, 0.15);
            padding: 0.4rem 0;
            justify-content: space-around;
            align-items: center;
        }
        .bottom-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.15rem;
            padding: 0.4rem 0.6rem;
            font-size: 0.65rem;
            color: var(--text-muted);
            transition: var(--transition);
            border-radius: var(--radius-sm);
            min-width: 60px;
        }
        .bottom-tab a i { font-size: 1.1rem; }
        .bottom-tab a:hover { color: var(--text-light); }
        .bottom-tab a.active { color: var(--primary); }
        .bottom-tab a.nav-cta-tab { color: var(--primary); }
        .bottom-tab a.nav-cta-tab i { color: var(--primary); }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: 140px 0 80px;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 480px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,15,26,0.92) 0%, rgba(15,15,26,0.6) 50%, rgba(15,15,26,0.92) 100%);
            z-index: 1;
        }
        .category-hero .container { position: relative; z-index: 2; text-align: center; }
        .category-hero h1 {
            font-size: clamp(2.2rem, 5.5vw, 3.6rem);
            font-weight: 800;
            margin-bottom: 1rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero .hero-sub {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 1.8rem;
            line-height: 1.8;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.8rem;
            margin-top: 1.2rem;
        }
        .hero-badges span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(212, 168, 67, 0.12);
            border: 1px solid rgba(212, 168, 67, 0.2);
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--primary-light);
        }
        .hero-badges span i { font-size: 0.8rem; }

        /* ===== Section Common ===== */
        .section { padding: 80px 0; }
        .section-dark { background: var(--bg-card); }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--primary-gradient);
            border-radius: 3px;
            margin: 0.6rem auto 0;
        }
        .section-title p {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0.8rem auto 0;
            font-size: 1rem;
        }

        /* ===== Cards Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
        }
        .card-item {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(212,168,67,0.12);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .card-item:hover { transform: translateY(-4px); border-color: rgba(212,168,67,0.3); box-shadow: var(--shadow-glow); }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(212,168,67,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .card-item h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
        .card-item p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 0; }

        /* ===== Features / 卖点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.2rem;
        }
        .feature-block {
            text-align: center;
            padding: 2rem 1.2rem;
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-md);
            border: 1px solid rgba(212,168,67,0.08);
            transition: var(--transition);
        }
        .feature-block:hover { border-color: rgba(212,168,67,0.2); background: rgba(212,168,67,0.04); }
        .feature-block .num {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
            margin-bottom: 0.4rem;
        }
        .feature-block h4 { font-size: 1rem; margin-bottom: 0.3rem; }
        .feature-block p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== Steps / 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
            counter-reset: step;
        }
        .step-item {
            position: relative;
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(212,168,67,0.1);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem 1.5rem 2.8rem;
            transition: var(--transition);
            counter-increment: step;
        }
        .step-item::before {
            content: counter(step);
            position: absolute;
            top: 1rem;
            left: 1rem;
            width: 28px;
            height: 28px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--bg-dark);
        }
        .step-item:hover { border-color: rgba(212,168,67,0.3); transform: translateY(-3px); box-shadow: var(--shadow-glow); }
        .step-item h4 { font-size: 1.05rem; margin-bottom: 0.3rem; }
        .step-item p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== Scenarios / 适用场景 ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.2rem;
        }
        .scenario-card {
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(212,168,67,0.08);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            transition: var(--transition);
        }
        .scenario-card:hover { border-color: rgba(212,168,67,0.25); background: rgba(212,168,67,0.04); }
        .scenario-card .sc-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(212,168,67,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--primary);
        }
        .scenario-card h4 { font-size: 1rem; margin-bottom: 0.2rem; }
        .scenario-card p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 0.75rem; }
        .faq-item {
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(212,168,67,0.1);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(212,168,67,0.2); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 1.2rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-light);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 0.8rem;
        }
        .faq-question:hover { color: var(--primary-light); }
        .faq-question i { font-size: 0.85rem; color: var(--primary); transition: var(--transition); }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 1.2rem 1rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-gradient);
            border-radius: var(--radius-lg);
            padding: 3.5rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section * { position: relative; z-index: 1; }
        .cta-section h2 { color: var(--bg-dark); font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 0.6rem; }
        .cta-section p { color: rgba(30,30,20,0.75); font-size: 1.05rem; max-width: 560px; margin: 0 auto 1.5rem; }
        .cta-btn-group { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }
        .btn-primary, .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--bg-dark);
            color: var(--primary-light);
            border-color: var(--bg-dark);
        }
        .btn-primary:hover { background: transparent; color: var(--bg-dark); border-color: var(--bg-dark); transform: translateY(-2px); }
        .btn-outline {
            background: transparent;
            color: var(--bg-dark);
            border-color: var(--bg-dark);
        }
        .btn-outline:hover { background: var(--bg-dark); color: var(--primary-light); transform: translateY(-2px); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid rgba(212,168,67,0.1);
            padding: 3rem 0 1.5rem;
            margin-bottom: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-brand .site-logo { font-size: 1.15rem; margin-bottom: 0.8rem; display: inline-flex; }
        .footer-brand p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 0; }
        .footer-col h4 { font-size: 0.95rem; margin-bottom: 0.8rem; color: var(--primary-light); }
        .footer-col a {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 0.25rem 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-col a i { width: 16px; font-size: 0.75rem; color: var(--primary); }
        .footer-bottom {
            border-top: 1px solid rgba(212,168,67,0.08);
            padding-top: 1.2rem;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--primary); }
        .footer-bottom a:hover { color: var(--primary-light); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .category-hero { padding: 120px 0 60px; min-height: 400px; }
        }
        @media (max-width: 768px) {
            .main-nav { display: none; }
            .nav-toggle { display: block; }
            .bottom-tab { display: flex; }
            .site-footer { margin-bottom: 56px; }
            .header-inner { height: 64px; }
            .category-hero { padding: 100px 0 50px; min-height: 360px; }
            .section { padding: 50px 0; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .card-grid { grid-template-columns: 1fr 1fr; }
            .features-grid { grid-template-columns: 1fr 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .scenario-grid { grid-template-columns: 1fr; }
            .cta-section { padding: 2.5rem 1.5rem; border-radius: var(--radius-md); }
            .hero-badges span { font-size: 0.78rem; padding: 0.3rem 0.8rem; }
        }
        @media (max-width: 520px) {
            .card-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr; }
            .category-hero { padding: 90px 0 40px; min-height: 320px; }
            .section-title h2 { font-size: 1.4rem; }
            .cta-section h2 { font-size: 1.3rem; }
            .btn-primary, .btn-outline { padding: 0.6rem 1.4rem; font-size: 0.85rem; }
            .footer-grid { gap: 1.2rem; }
        }

        /* ===== Mobile Nav Drawer ===== */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100vh;
            background: var(--bg-card);
            border-left: 1px solid rgba(212,168,67,0.15);
            z-index: 1100;
            padding: 2rem 1.5rem;
            transition: var(--transition);
            box-shadow: -8px 0 40px rgba(0,0,0,0.6);
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .mobile-drawer.open { right: 0; }
        .mobile-drawer a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .mobile-drawer a:hover { color: var(--text-light); background: rgba(212,168,67,0.08); }
        .mobile-drawer a.active { color: var(--primary); background: rgba(212,168,67,0.12); }
        .mobile-drawer a.nav-cta {
            background: var(--primary-gradient);
            color: var(--bg-dark);
            font-weight: 700;
            justify-content: center;
            margin-top: 0.5rem;
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            z-index: 1050;
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }
        .drawer-overlay.open { opacity: 1; pointer-events: auto; }
        .drawer-close {
            align-self: flex-end;
            background: none;
            border: none;
            color: var(--text-muted);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.3rem;
            margin-bottom: 0.5rem;
        }
        .drawer-close:hover { color: var(--text-light); }

        /* ===== Featured Cover Image ===== */
        .cover-showcase {
            margin: 2rem auto 0;
            max-width: 720px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(212,168,67,0.15);
            box-shadow: var(--shadow-glow);
        }
        .cover-showcase img { width: 100%; display: block; }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.82rem;
            color: var(--text-muted);
            padding: 0.8rem 0;
            flex-wrap: wrap;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: var(--primary); }
        .breadcrumb i { font-size: 0.6rem; color: var(--text-muted); }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 0.5rem; }
        .mt-2 { margin-top: 1rem; }
        .mt-3 { margin-top: 1.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .gap-1 { gap: 0.5rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }