/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a0a1a;
            --primary-light: #12122a;
            --primary-dark: #050510;
            --accent: #ff6b35;
            --accent-glow: rgba(255, 107, 53, 0.35);
            --accent2: #00f0ff;
            --accent2-glow: rgba(0, 240, 255, 0.3);
            --accent3: #ff2d55;
            --accent3-glow: rgba(255, 45, 85, 0.25);
            --text: #ffffff;
            --text-muted: #b0b0c8;
            --text-dim: #707090;
            --bg-card: #12122a;
            --bg-card-hover: #1a1a3a;
            --bg-section: #0d0d22;
            --bg-section-alt: #0a0a1a;
            --border: #2a2a4a;
            --border-light: #3a3a5a;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(255, 107, 53, 0.2);
            --shadow-glow2: 0 0 30px rgba(0, 240, 255, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
            --nav-height: 70px;
            --max-width: 1200px;
            --gap: 24px;
            --gap-lg: 48px;
        }

        /* ===== 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);
            background: var(--primary);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--accent2);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--gap);
        }

        .container-fluid {
            width: 100%;
            padding: 0 var(--gap);
        }

        /* ===== 霓虹强调线 ===== */
        .neon-line {
            width: 60px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px 0 20px;
            box-shadow: 0 0 20px var(--accent-glow);
        }

        .neon-line.centered {
            margin: 12px auto 20px;
        }

        .neon-line.light {
            background: var(--accent2);
            box-shadow: 0 0 20px var(--accent2-glow);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(10, 10, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 26, 0.97);
            border-bottom-color: var(--accent-glow);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 1px;
            transition: var(--transition);
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent), var(--accent3));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            box-shadow: 0 0 20px var(--accent-glow);
        }

        .logo-text {
            background: linear-gradient(90deg, var(--accent), var(--accent2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: var(--transition);
            box-shadow: 0 0 12px var(--accent-glow);
        }

        .main-nav a:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.04);
        }
        .main-nav a:hover::after {
            width: 60%;
        }

        .main-nav a.active {
            color: var(--accent);
            background: rgba(255, 107, 53, 0.08);
        }
        .main-nav a.active::after {
            width: 70%;
            box-shadow: 0 0 20px var(--accent-glow);
        }

        .nav-cta {
            padding: 8px 24px !important;
            background: linear-gradient(135deg, var(--accent), var(--accent3)) !important;
            color: #fff !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 0 20px var(--accent-glow);
            transition: var(--transition);
        }
        .nav-cta::after {
            display: none !important;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 35px var(--accent-glow);
            background: linear-gradient(135deg, #ff7a4a, #ff3d6a) !important;
            color: #fff !important;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .nav-toggle span {
            width: 26px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            background: var(--primary);
            padding: calc(var(--nav-height) + 40px) 0 60px;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
            animation: heroPan 30s ease-in-out infinite alternate;
        }

        @keyframes heroPan {
            0% {
                transform: scale(1) translate(0, 0);
            }
            100% {
                transform: scale(1.05) translate(-1%, -1%);
            }
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(10, 10, 26, 0.3) 0%, var(--primary) 75%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 880px;
            padding: 0 var(--gap);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(255, 107, 53, 0.12);
            border: 1px solid rgba(255, 107, 53, 0.25);
            font-size: 13px;
            font-weight: 500;
            color: var(--accent);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
            backdrop-filter: blur(8px);
        }

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

        .hero-title {
            font-size: clamp(40px, 8vw, 76px);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 30%, var(--accent) 70%, var(--accent2) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-sub {
            font-size: clamp(16px, 2.2vw, 22px);
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent3));
            color: #fff;
            box-shadow: 0 0 30px var(--accent-glow);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 50px var(--accent-glow);
            color: #fff;
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(8px);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
        }

        .btn-sm {
            padding: 10px 22px;
            font-size: 14px;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 50px;
            padding-top: 40px;
            border-top: 1px solid var(--border);
        }

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

        .hero-stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            background: linear-gradient(90deg, var(--accent), var(--accent2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--text-dim);
            margin-top: 4px;
            letter-spacing: 0.5px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }

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

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

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(255, 107, 53, 0.1);
            border: 1px solid rgba(255, 107, 53, 0.2);
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            color: var(--text);
            margin-bottom: 8px;
        }

        .section-desc {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap);
        }

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0;
            transition: var(--transition);
        }

        .card:hover {
            border-color: var(--border-light);
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            background: var(--bg-card-hover);
        }
        .card:hover::before {
            opacity: 1;
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(255, 107, 53, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent);
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .card:hover .card-icon {
            background: rgba(255, 107, 53, 0.2);
            box-shadow: 0 0 20px var(--accent-glow);
        }

        .card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            transition: var(--transition);
        }
        .card .card-link i {
            transition: var(--transition);
        }
        .card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== 封面卡片 ===== */
        .cover-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            cursor: pointer;
        }

        .cover-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: var(--border-light);
        }

        .cover-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }

        .cover-card:hover .cover-card-img {
            transform: scale(1.03);
        }

        .cover-card-body {
            padding: 20px 22px 24px;
        }

        .cover-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .cover-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .cover-card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.2);
            font-size: 11px;
            font-weight: 600;
            color: var(--accent2);
            margin-bottom: 10px;
        }

        /* ===== 数据/统计块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }

        .stat-card {
            text-align: center;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px 20px;
            transition: var(--transition);
        }

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

        .stat-number {
            font-size: 40px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent), var(--accent2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-dim);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap);
        }

        .news-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 24px;
            transition: var(--transition);
        }

        .news-item:hover {
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }

        .news-item .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-dim);
            margin-bottom: 10px;
        }

        .news-item .meta .cat {
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(255, 107, 53, 0.1);
            color: var(--accent);
            font-weight: 600;
            font-size: 11px;
        }

        .news-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-item h3 a {
            color: var(--text);
            transition: var(--transition);
        }
        .news-item h3 a:hover {
            color: var(--accent);
        }

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

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-dim);
            font-size: 15px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        /* ===== 特色图文交替 ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 60px;
        }

        .feature-row:last-child {
            margin-bottom: 0;
        }

        .feature-image img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            width: 100%;
            height: 320px;
            object-fit: cover;
            border: 1px solid var(--border);
        }

        .feature-text h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .feature-text p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .feature-text .feature-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .feature-text .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .feature-text .feature-list li i {
            color: var(--accent2);
            margin-top: 3px;
            font-size: 14px;
        }

        /* ===== 评价/口碑 ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

        .testimonial-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px 24px;
            transition: var(--transition);
        }

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

        .testimonial-card .stars {
            color: #ffb800;
            font-size: 14px;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .testimonial-card blockquote {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            font-style: italic;
            margin-bottom: 16px;
        }

        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-card .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent3));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
        }

        .testimonial-card .author-info strong {
            font-size: 14px;
            display: block;
        }

        .testimonial-card .author-info span {
            font-size: 12px;
            color: var(--text-dim);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.active {
            border-color: var(--accent-glow);
            box-shadow: var(--shadow-glow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-question i {
            transition: var(--transition);
            font-size: 14px;
            color: var(--text-dim);
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-card), var(--primary-light));
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 50%, var(--accent-glow) 0%, transparent 60%);
            opacity: 0.3;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
        }

        .cta-section p {
            color: var(--text-muted);
            font-size: 17px;
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
        }

        .cta-section .btn {
            position: relative;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid var(--border);
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand .logo {
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-dim);
            max-width: 300px;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-dim);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-dim);
        }

        .footer-bottom .social-links {
            display: flex;
            gap: 12px;
        }

        .footer-bottom .social-links a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-dim);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .footer-bottom .social-links a:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 0 20px var(--accent-glow);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-row {
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(10, 10, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px var(--gap);
                gap: 6px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
            }

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

            .main-nav a {
                padding: 12px 18px;
                width: 100%;
                font-size: 16px;
            }

            .main-nav a::after {
                bottom: 4px;
            }

            .nav-cta {
                margin-top: 8px;
                text-align: center;
            }

            .grid-2,
            .grid-3,
            .news-list {
                grid-template-columns: 1fr;
            }

            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-number {
                font-size: 32px;
            }

            .testimonial-grid {
                grid-template-columns: 1fr;
            }

            .feature-row {
                grid-template-columns: 1fr;
                gap: 24px;
                margin-bottom: 40px;
            }

            .feature-image img {
                height: 220px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .hero-stats {
                gap: 24px;
            }

            .hero-stat-number {
                font-size: 26px;
            }

            .cta-section {
                padding: 40px 24px;
            }

            .section {
                padding: 56px 0;
            }

            .cover-card-img {
                height: 180px;
            }
        }

        @media (max-width: 520px) {
            .grid-4 {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-card {
                padding: 20px 12px;
            }

            .stat-number {
                font-size: 28px;
            }

            .hero-title {
                font-size: 34px;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }

            .section-title {
                font-size: 24px;
            }

            .cover-card-img {
                height: 160px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--primary);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent);
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-up {
            animation: fadeUp 0.8s ease forwards;
        }

        .fade-up-1 {
            animation-delay: 0.1s;
        }
        .fade-up-2 {
            animation-delay: 0.2s;
        }
        .fade-up-3 {
            animation-delay: 0.3s;
        }
        .fade-up-4 {
            animation-delay: 0.4s;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #7c3aed;
            --primary-light: #a78bfa;
            --primary-dark: #5b21b6;
            --accent: #00d4ff;
            --accent2: #f59e0b;
            --bg-dark: #0a0e17;
            --bg-card: #111827;
            --bg-card-hover: #1a2332;
            --bg-elevated: #1e293b;
            --text-main: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: #1e3a5f;
            --border-glow: rgba(0, 212, 255, 0.25);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 212, 255, 0.06);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-dark);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-main);
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            margin-bottom: 0.5em;
        }
        h3 {
            font-size: clamp(1.15rem, 2vw, 1.5rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1em;
            color: var(--text-secondary);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(10, 14, 23, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 212, 255, 0.08);
            z-index: 1000;
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.96);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--text-main);
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.5px;
            transition: opacity var(--transition);
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--text-main);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 12px;
            font-size: 1.3rem;
            color: #fff;
            box-shadow: 0 0 20px rgba(124, 58, 237, 0.3);
        }
        .logo-text {
            background: linear-gradient(to right, var(--text-main), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: 10px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: background var(--transition), color var(--transition), box-shadow var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a i {
            margin-right: 6px;
            font-size: 0.9rem;
        }
        .main-nav a:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--accent);
            background: rgba(0, 212, 255, 0.1);
            box-shadow: inset 0 -2px 0 var(--accent);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 40%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--accent);
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 8px 22px;
            border-radius: 24px;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
            margin-left: 10px;
        }
        .main-nav a.nav-cta:hover {
            box-shadow: 0 6px 30px rgba(124, 58, 237, 0.5);
            transform: translateY(-1px);
            color: #fff;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            width: 32px;
            height: 32px;
            justify-content: center;
            align-items: center;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 4px;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text-main);
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 130px 0 80px;
            margin-top: var(--header-h);
            background: linear-gradient(135deg, rgba(10, 14, 23, 0.92), rgba(30, 41, 59, 0.85)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid rgba(0, 212, 255, 0.06);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.12), transparent 70%);
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 70%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: clamp(2.4rem, 5.5vw, 4rem);
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(to right, #fff, var(--accent), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }
        .page-hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .page-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-top: 10px;
        }
        .page-hero .hero-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(0, 212, 255, 0.15);
            border-radius: 30px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            backdrop-filter: blur(4px);
        }
        .page-hero .hero-tags span i {
            color: var(--accent);
            font-size: 0.8rem;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-dark {
            background: var(--bg-dark);
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header p {
            max-width: 640px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-header .badge-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 18px;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            background: rgba(124, 58, 237, 0.15);
            border: 1px solid rgba(124, 58, 237, 0.2);
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--primary-light);
            letter-spacing: 0.3px;
        }
        .badge-accent {
            background: rgba(0, 212, 255, 0.12);
            border-color: rgba(0, 212, 255, 0.2);
            color: var(--accent);
        }
        .badge-glow {
            box-shadow: 0 0 20px rgba(124, 58, 237, 0.1);
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 26px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 212, 255, 0.12);
            border-color: rgba(0, 212, 255, 0.12);
        }
        .card-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 18px;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(0, 212, 255, 0.1));
            color: var(--accent);
            border: 1px solid rgba(0, 212, 255, 0.1);
        }
        .card h3 {
            margin-bottom: 10px;
            font-size: 1.2rem;
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }
        .card .card-tags span {
            padding: 2px 12px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .card-cover {
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 18px;
        }
        .card-cover img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            transition: transform 0.5s ease;
        }
        .card:hover .card-cover img {
            transform: scale(1.03);
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }

        /* ===== 玩法分类板块 ===== */
        .play-type-card {
            text-align: center;
            padding: 32px 20px 28px;
        }
        .play-type-card .card-icon {
            margin: 0 auto 16px;
        }
        .play-type-card h3 {
            font-size: 1.15rem;
        }
        .play-type-card .play-count {
            display: inline-block;
            margin-top: 10px;
            padding: 2px 14px;
            background: rgba(0, 212, 255, 0.1);
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--accent);
        }

        /* ===== 图文区块 ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-block.reverse {
            direction: rtl;
        }
        .feature-block.reverse>* {
            direction: ltr;
        }
        .feature-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, 0.04);
        }
        .feature-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .feature-image:hover img {
            transform: scale(1.02);
        }
        .feature-content h3 {
            font-size: 1.6rem;
            margin-bottom: 14px;
        }
        .feature-content .feature-list {
            margin-top: 18px;
        }
        .feature-content .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 12px;
            font-size: 0.98rem;
            color: var(--text-secondary);
        }
        .feature-content .feature-list li i {
            color: var(--accent);
            font-size: 1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ===== 统计数据 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.04);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), border-color var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-3px);
            border-color: rgba(0, 212, 255, 0.12);
        }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(to right, var(--accent), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.04);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item.open {
            border-color: rgba(0, 212, 255, 0.15);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            background: transparent;
            text-align: left;
            cursor: pointer;
            transition: background var(--transition);
            gap: 16px;
            border: none;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(124, 58, 237, 0.15);
            color: var(--primary-light);
            transition: transform 0.3s ease, background 0.3s ease;
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: rgba(0, 212, 255, 0.15);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.08), rgba(0, 212, 255, 0.05)), var(--bg-card);
            border-top: 1px solid rgba(0, 212, 255, 0.06);
            border-bottom: 1px solid rgba(0, 212, 255, 0.06);
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            margin-bottom: 14px;
        }
        .cta-section p {
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            box-shadow: 0 6px 30px rgba(124, 58, 237, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 40px rgba(124, 58, 237, 0.45);
            color: #fff;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .btn-outline {
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 212, 255, 0.08);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.88rem;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            padding: 18px 0 0;
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--text-secondary);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: var(--text-muted);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            color: var(--text-main);
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition), padding-left var(--transition);
            display: inline-block;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .social-links {
            display: flex;
            gap: 14px;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .social-links a:hover {
            background: rgba(124, 58, 237, 0.15);
            color: var(--primary-light);
            transform: scale(1.08);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .feature-block {
                gap: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: rgba(10, 14, 23, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 8px;
                transform: translateY(-110%);
                opacity: 0;
                transition: transform 0.4s ease, opacity 0.4s ease;
                border-bottom: 1px solid rgba(0, 212, 255, 0.08);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
                pointer-events: none;
                max-height: 80vh;
                overflow-y: auto;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 18px;
                font-size: 1rem;
                border-radius: 10px;
            }
            .main-nav a.nav-cta {
                margin-left: 0;
                margin-top: 6px;
                text-align: center;
                justify-content: center;
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.active {
                background: rgba(0, 212, 255, 0.1);
            }

            .page-hero {
                padding: 100px 0 56px;
            }
            .page-hero h1 {
                font-size: clamp(1.8rem, 6vw, 2.6rem);
            }
            .page-hero p {
                font-size: 1rem;
            }

            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feature-block.reverse {
                direction: ltr;
            }
            .feature-image img {
                height: 240px;
            }
            .feature-content h3 {
                font-size: 1.3rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .faq-question {
                font-size: 0.98rem;
                padding: 14px 18px;
            }
            .faq-answer {
                padding: 0 18px;
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
            .page-hero .hero-tags span {
                font-size: 0.8rem;
                padding: 4px 14px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1.1rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-card .stat-number {
                font-size: 1.6rem;
            }
            .card {
                padding: 20px 18px;
            }
            .breadcrumb {
                font-size: 0.8rem;
                gap: 6px;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.92rem;
                width: 100%;
                justify-content: center;
            }
            .cta-buttons .btn {
                width: 100%;
                max-width: 320px;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #f59e0b;
            --clr-primary-hover: #d97706;
            --clr-primary-glow: rgba(245, 158, 11, 0.35);
            --clr-accent: #ff4500;
            --clr-accent-hover: #e03d00;
            --clr-bg: #0a0e17;
            --clr-bg-alt: #111827;
            --clr-bg-card: #1a2235;
            --clr-bg-card-hover: #1f2a40;
            --clr-bg-input: #0f1625;
            --clr-text: #f1f5f9;
            --clr-text-secondary: #94a3b8;
            --clr-text-muted: #64748b;
            --clr-border: #2a3a5c;
            --clr-border-light: #3a4a6c;
            --clr-success: #10b981;
            --clr-warning: #f59e0b;
            --clr-danger: #ef4444;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 30px var(--clr-primary-glow);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --content-max: 900px;
            --header-h: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--clr-text);
            background: var(--clr-bg);
            min-height: 100vh;
        }
        a {
            color: var(--clr-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--clr-primary-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 4px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: transparent;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--clr-text);
        }
        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);
        }
        h4 {
            font-size: clamp(1rem, 2vw, 1.2rem);
        }
        p {
            color: var(--clr-text-secondary);
            margin-bottom: 1rem;
        }
        p:last-child {
            margin-bottom: 0;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== 导航 Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--clr-border);
            height: var(--header-h);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 20px var(--clr-primary-glow);
        }
        .logo-text {
            font-size: 22px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 1px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--clr-text-secondary);
            transition: all var(--transition);
            position: relative;
            text-decoration: none;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--clr-text);
            background: rgba(245, 158, 11, 0.08);
        }
        .main-nav a.active {
            color: var(--clr-primary);
            background: rgba(245, 158, 11, 0.12);
            box-shadow: inset 0 -2px 0 var(--clr-primary);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--clr-primary);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--clr-primary-glow);
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
            color: #fff;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 16px var(--clr-primary-glow);
            margin-left: 10px;
        }
        .main-nav a.nav-cta:hover {
            transform: translateY(-1px) scale(1.03);
            box-shadow: 0 6px 28px var(--clr-primary-glow);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--clr-text);
            border-radius: 4px;
            transition: var(--transition);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(10, 14, 23, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 2px solid var(--clr-border);
                box-shadow: var(--shadow-lg);
                pointer-events: none;
                align-items: stretch;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                padding: 12px 18px;
                font-size: 16px;
                text-align: center;
                border-radius: var(--radius-sm);
            }
            .main-nav a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-toggle.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            .nav-toggle.active span:nth-child(2) {
                opacity: 0;
            }
            .nav-toggle.active span:nth-child(3) {
                transform: rotate(-45deg) translate(5px, -5px);
            }
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            padding: calc(var(--header-h) + 40px) 0 50px;
            background: linear-gradient(135deg, rgba(10, 14, 23, 0.92), rgba(17, 24, 39, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid var(--clr-border);
            position: relative;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--clr-bg), transparent);
            pointer-events: none;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--clr-text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--clr-text-muted);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--clr-primary);
        }
        .breadcrumb span {
            color: var(--clr-text-secondary);
        }
        .breadcrumb i {
            font-size: 10px;
            color: var(--clr-text-muted);
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .article-category {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 20px;
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(255, 69, 0, 0.2));
            border: 1px solid rgba(245, 158, 11, 0.3);
            font-size: 13px;
            font-weight: 600;
            color: var(--clr-primary);
        }
        .article-date {
            font-size: 14px;
            color: var(--clr-text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-date i {
            font-size: 14px;
        }
        .article-hero h1 {
            margin-bottom: 16px;
            max-width: 900px;
            background: linear-gradient(135deg, #fff, var(--clr-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-hero .article-desc {
            font-size: 18px;
            color: var(--clr-text-secondary);
            max-width: 800px;
            line-height: 1.7;
        }

        /* ===== 文章正文 ===== */
        .article-body-section {
            padding: 50px 0 60px;
            background: var(--clr-bg);
        }
        .article-body-wrapper {
            max-width: var(--content-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .article-body {
            background: var(--clr-bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-md);
            font-size: 17px;
            line-height: 1.9;
            color: var(--clr-text-secondary);
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            margin-top: 32px;
            margin-bottom: 16px;
            color: var(--clr-text);
        }
        .article-body h2 {
            font-size: 1.6rem;
            border-left: 4px solid var(--clr-primary);
            padding-left: 16px;
        }
        .article-body h3 {
            font-size: 1.3rem;
        }
        .article-body p {
            margin-bottom: 1.2rem;
            color: var(--clr-text-secondary);
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.2rem;
            padding-left: 24px;
            color: var(--clr-text-secondary);
        }
        .article-body ul li {
            list-style: disc;
            margin-bottom: 6px;
        }
        .article-body ol li {
            list-style: decimal;
            margin-bottom: 6px;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 28px 0;
            box-shadow: var(--shadow-md);
        }
        .article-body blockquote {
            border-left: 4px solid var(--clr-primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(245, 158, 11, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--clr-text-secondary);
            font-style: italic;
        }
        .article-body a {
            color: var(--clr-primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--clr-primary-hover);
        }
        .article-body code {
            background: rgba(245, 158, 11, 0.1);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--clr-primary);
        }
        .article-body pre {
            background: var(--clr-bg-alt);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            overflow-x: auto;
            margin: 24px 0;
            color: var(--clr-text-secondary);
            font-size: 14px;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .article-body th,
        .article-body td {
            padding: 12px 18px;
            border: 1px solid var(--clr-border);
            text-align: left;
        }
        .article-body th {
            background: var(--clr-bg-alt);
            color: var(--clr-text);
            font-weight: 600;
        }
        .article-body td {
            color: var(--clr-text-secondary);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--clr-bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-md);
        }
        .article-not-found i {
            font-size: 56px;
            color: var(--clr-text-muted);
            margin-bottom: 20px;
            display: block;
        }
        .article-not-found h2 {
            margin-bottom: 12px;
            color: var(--clr-text);
        }
        .article-not-found p {
            color: var(--clr-text-muted);
            margin-bottom: 24px;
        }
        .article-not-found .btn-back {
            display: inline-block;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px var(--clr-primary-glow);
            color: #fff;
        }

        /* ===== 文章标签 ===== */
        .article-tags-section {
            padding: 0 0 40px;
            background: var(--clr-bg);
        }
        .article-tags-wrapper {
            max-width: var(--content-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 24px;
            border-top: 1px solid var(--clr-border);
        }
        .article-tags .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 20px;
            background: rgba(245, 158, 11, 0.08);
            border: 1px solid rgba(245, 158, 11, 0.15);
            font-size: 13px;
            color: var(--clr-text-secondary);
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: rgba(245, 158, 11, 0.18);
            color: var(--clr-primary);
            border-color: var(--clr-primary);
        }
        .article-tags .tag i {
            margin-right: 4px;
            color: var(--clr-primary);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 16px;
        }
        .article-share span {
            font-size: 14px;
            color: var(--clr-text-muted);
            font-weight: 500;
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            color: var(--clr-text-secondary);
            transition: var(--transition);
        }
        .article-share a:hover {
            background: var(--clr-primary);
            color: #fff;
            border-color: var(--clr-primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px var(--clr-primary-glow);
        }

        /* ===== 推荐阅读 ===== */
        .related-section {
            padding: 50px 0;
            background: var(--clr-bg-alt);
            border-top: 1px solid var(--clr-border);
        }
        .related-section .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .related-section .section-header h2 {
            margin-bottom: 8px;
        }
        .related-section .section-header p {
            color: var(--clr-text-muted);
            font-size: 16px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--clr-border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: var(--clr-primary);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.12);
        }
        .related-card .card-img {
            height: 180px;
            background: var(--clr-bg-alt);
            overflow: hidden;
            position: relative;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-cat {
            font-size: 12px;
            font-weight: 600;
            color: var(--clr-primary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card .card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-title a {
            color: inherit;
            text-decoration: none;
        }
        .related-card .card-title a:hover {
            color: var(--clr-primary);
        }
        .related-card .card-desc {
            font-size: 14px;
            color: var(--clr-text-muted);
            margin-bottom: 12px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--clr-text-muted);
            border-top: 1px solid var(--clr-border);
            padding-top: 12px;
        }
        .related-card .card-meta i {
            margin-right: 4px;
        }
        .related-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--clr-text-muted);
            grid-column: 1 / -1;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0;
            background: var(--clr-bg);
        }
        .faq-section .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .faq-section .section-header h2 {
            margin-bottom: 8px;
        }
        .faq-section .section-header p {
            color: var(--clr-text-muted);
            font-size: 16px;
        }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--clr-border-light);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--clr-text);
            font-size: 16px;
            transition: var(--transition);
            user-select: none;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--clr-primary);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--clr-primary);
            transition: transform var(--transition);
            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(--clr-text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), rgba(255, 69, 0, 0.06)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-top: 1px solid var(--clr-border);
            border-bottom: 1px solid var(--clr-border);
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 14, 23, 0.75);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            margin-bottom: 12px;
            background: linear-gradient(135deg, #fff, var(--clr-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .cta-section p {
            font-size: 18px;
            color: var(--clr-text-secondary);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-block;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            transition: var(--transition);
            box-shadow: 0 4px 20px var(--clr-primary-glow);
            text-decoration: none;
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 36px var(--clr-primary-glow);
            color: #fff;
        }
        .btn-secondary {
            display: inline-block;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--clr-text);
            font-weight: 600;
            font-size: 16px;
            border: 1px solid var(--clr-border-light);
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-secondary:hover {
            border-color: var(--clr-primary);
            color: var(--clr-primary);
            background: rgba(245, 158, 11, 0.06);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--clr-bg-alt);
            border-top: 1px solid var(--clr-border);
            padding: 50px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--clr-border);
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--clr-text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--clr-text-muted);
            transition: var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
        }
        .footer-col ul li a:hover {
            color: var(--clr-primary);
            transform: translateX(4px);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--clr-text-muted);
            margin: 0;
        }
        .footer-bottom p a {
            color: var(--clr-text-muted);
        }
        .footer-bottom p a:hover {
            color: var(--clr-primary);
        }
        .social-links {
            display: flex;
            gap: 10px;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            color: var(--clr-text-muted);
            transition: var(--transition);
            font-size: 16px;
            text-decoration: none;
        }
        .social-links a:hover {
            background: var(--clr-primary);
            color: #fff;
            border-color: var(--clr-primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px var(--clr-primary-glow);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .article-body {
                padding: 30px 28px;
            }
        }
        @media (max-width: 768px) {
            .article-hero {
                padding: calc(var(--header-h) + 24px) 0 36px;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .article-hero .article-desc {
                font-size: 16px;
            }
            .article-body {
                padding: 24px 20px;
                font-size: 15px;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 16px;
            }
            .article-meta {
                gap: 10px;
            }
            .article-tags {
                gap: 8px;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-body {
                padding: 18px 14px;
                font-size: 14px;
            }
            .article-hero h1 {
                font-size: 1.5rem;
            }
            .breadcrumb {
                font-size: 12px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 28px;
                font-size: 14px;
                width: 100%;
                text-align: center;
            }
            .cta-buttons {
                flex-direction: column;
                gap: 12px;
            }
            .article-share {
                flex-wrap: wrap;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 10px;
        }
        .mt-2 {
            margin-top: 20px;
        }
        .mt-3 {
            margin-top: 30px;
        }
        .mb-1 {
            margin-bottom: 10px;
        }
        .mb-2 {
            margin-bottom: 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }