/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #00e5ff;
            --primary-glow: rgba(0, 229, 255, 0.25);
            --secondary: #7c4dff;
            --secondary-glow: rgba(124, 77, 255, 0.25);
            --accent: #ff6b6b;
            --bg-deep: #0a0e17;
            --bg-card: #131a2b;
            --bg-surface: #1a2337;
            --bg-nav: #0b111e;
            --text-primary: #e8eaed;
            --text-secondary: #9aa0a6;
            --text-muted: #6b7280;
            --border-color: rgba(0, 229, 255, 0.15);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 229, 255, 0.06);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.08);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --container-max: 1200px;
        }
        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: #80f0ff; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media screen and (max-width: 640px) {
            .container { padding: 0 16px; }
        }
        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11, 17, 30, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .site-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 1.6rem;
            text-shadow: 0 0 20px var(--primary-glow);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            position: relative;
            transition: var(--transition);
        }
        .nav-list a:hover,
        .nav-list a.active {
            color: #fff;
            background: rgba(0, 229, 255, 0.08);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
            box-shadow: 0 0 16px var(--primary-glow);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--secondary)) !important;
            color: #fff !important;
            padding: 8px 24px !important;
            border-radius: 30px !important;
            font-weight: 600 !important;
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.2);
        }
        .nav-cta:hover {
            transform: scale(1.04);
            box-shadow: 0 0 40px rgba(0, 229, 255, 0.35) !important;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        @media screen and (max-width: 768px) {
            .nav-list {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(11, 17, 30, 0.98);
                backdrop-filter: blur(14px);
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-list.open { display: flex; }
            .nav-list a { padding: 12px 16px; width: 100%; }
            .nav-list a.active::after { display: none; }
            .nav-list a.active { background: rgba(0, 229, 255, 0.12); border-radius: var(--radius-sm); }
            .nav-cta { margin-top: 8px; text-align: center; }
            .nav-toggle { display: block; }
        }
        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(145deg, #0b111e 0%, #111d35 50%, #0f1629 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(124, 77, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-content {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.2);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: var(--primary);
            margin-bottom: 28px;
            letter-spacing: 0.5px;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 30%, var(--primary) 70%, var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff !important;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.2);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 50px rgba(0, 229, 255, 0.35);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--text-primary) !important;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.05rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background: rgba(0, 229, 255, 0.05);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 60px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stat-num i {
            color: var(--primary);
            font-size: 1.2rem;
            margin-right: 4px;
        }
        .hero-stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media screen and (max-width: 768px) {
            .hero { padding: 110px 0 60px; }
            .hero-title { font-size: 2.2rem; }
            .hero-sub { font-size: 1rem; }
            .hero-stats { gap: 24px; }
            .hero-stat-num { font-size: 1.6rem; }
        }
        @media screen and (max-width: 520px) {
            .hero-title { font-size: 1.8rem; }
            .btn-primary, .btn-secondary { padding: 12px 24px; font-size: 0.95rem; }
        }
        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-surface);
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .badge-line {
            display: inline-block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin-bottom: 16px;
        }
        @media screen and (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-header h2 { font-size: 1.7rem; }
        }
        /* ===== Feature Cards ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 229, 255, 0.12);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: rgba(0, 229, 255, 0.15);
            box-shadow: 0 0 30px var(--primary-glow);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* ===== Category Section ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: 0 0 30px var(--primary-glow);
        }
        .category-card i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
            display: block;
        }
        .category-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .category-card span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        /* ===== Latest Posts (CMS) ===== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .post-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .post-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 255, 0.2);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
        }
        .post-card .post-cat {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(0, 229, 255, 0.1);
            padding: 2px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .post-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .post-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .post-card .post-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .post-card .post-meta i {
            margin-right: 4px;
            font-size: 0.75rem;
        }
        .post-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        /* ===== Data / Flow Section ===== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
            text-align: center;
        }
        .data-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 16px;
            border: 1px solid var(--border-color);
        }
        .data-item .num {
            font-size: 2.4rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
        }
        .data-item .num i {
            color: var(--primary);
            font-size: 1.4rem;
            margin-right: 4px;
        }
        .data-item .label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        /* ===== Game Types ===== */
        .game-types {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 16px;
        }
        .game-type-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px 16px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .game-type-item:hover {
            border-color: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 0 20px var(--secondary-glow);
        }
        .game-type-item i {
            font-size: 1.8rem;
            color: var(--secondary);
            margin-bottom: 8px;
            display: block;
        }
        .game-type-item span {
            font-size: 0.9rem;
            color: var(--text-primary);
            font-weight: 500;
        }
        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.15);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: left;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { transition: transform 0.3s; color: var(--primary); font-size: 0.85rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }
        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(145deg, #0f1a30, #131a2b);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: #070b13;
            padding: 48px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .site-logo { margin-bottom: 14px; }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary); }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--primary); }
        @media screen and (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        /* ===== Utilities ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        /* ===== Foundation Overrides ===== */
        .grid-x { margin-left: -12px; margin-right: -12px; }
        .cell { padding-left: 12px; padding-right: 12px; }
        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-fade { animation: fadeInUp 0.6s ease forwards; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #00e5ff;
            --clr-primary-dim: #0097a7;
            --clr-secondary: #ff6ec7;
            --clr-accent: #7c4dff;
            --clr-bg: #0b0d15;
            --clr-bg-alt: #11141f;
            --clr-bg-card: #181c2b;
            --clr-bg-card-hover: #1f2440;
            --clr-text: #e8eaf0;
            --clr-text-dim: #8b8fa3;
            --clr-text-muted: #5a5f72;
            --clr-border: #2a2e42;
            --clr-border-light: #3a3f5a;
            --clr-neon-glow: rgba(0, 229, 255, 0.25);
            --clr-neon-glow-strong: rgba(0, 229, 255, 0.5);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(42,46,66,0.6);
            --shadow-card-hover: 0 12px 48px rgba(0,0,0,0.7), 0 0 0 1px var(--clr-primary-dim);
            --shadow-neon: 0 0 30px var(--clr-neon-glow);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { text-decoration: none; color: inherit; transition: color var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media screen and (max-width: 640px) {
            .container { padding: 0 16px; }
        }

        /* ===== 站点头部 / 导航（暗色霓虹） ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 13, 21, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--clr-border);
            box-shadow: 0 4px 30px rgba(0,0,0,0.6);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--clr-text);
            transition: opacity var(--transition);
        }
        .site-logo i {
            color: var(--clr-primary);
            font-size: 1.5rem;
            text-shadow: 0 0 18px var(--clr-neon-glow-strong);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover { opacity: 0.85; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            position: relative;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--clr-text-dim);
            transition: all var(--transition);
        }
        .nav-list a:hover {
            color: var(--clr-text);
            background: rgba(255,255,255,0.05);
        }
        .nav-list a.active {
            color: var(--clr-primary);
            background: rgba(0, 229, 255, 0.08);
            box-shadow: inset 0 -2px 0 var(--clr-primary);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--clr-primary);
            box-shadow: 0 0 12px var(--clr-neon-glow-strong);
            border-radius: 2px;
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent)) !important;
            color: #0b0d15 !important;
            font-weight: 600 !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm) !important;
            box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
            transition: all var(--transition) !important;
        }
        .nav-cta i { margin-right: 6px; }
        .nav-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 30px rgba(0, 229, 255, 0.5);
            color: #0b0d15 !important;
            background: linear-gradient(135deg, #33eaff, #9c7cff) !important;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--clr-border);
            color: var(--clr-text);
            font-size: 1.4rem;
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--clr-primary);
            color: var(--clr-primary);
        }

        /* 移动端导航 */
        @media screen and (max-width: 768px) {
            .nav-toggle { display: block; }
            .nav-list {
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(11, 13, 21, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--clr-border);
                box-shadow: 0 20px 50px rgba(0,0,0,0.8);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after { display: none; }
            .nav-cta { text-align: center; margin-top: 6px; }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--clr-bg-alt);
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--clr-text) 30%, var(--clr-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-sub {
            text-align: center;
            color: var(--clr-text-dim);
            max-width: 640px;
            margin: 0 auto 48px;
            font-size: 1.05rem;
        }
        .section-sub i { color: var(--clr-primary); margin: 0 4px; }

        @media screen and (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }
            .section-sub { font-size: 0.95rem; margin-bottom: 32px; }
        }

        /* ===== 英雄区（Hero） ===== */
        .hero-guide {
            padding: 100px 0 80px;
            background: linear-gradient(160deg, var(--clr-bg) 0%, var(--clr-bg-alt) 60%, #0f1320 100%);
            border-bottom: 1px solid var(--clr-border);
            position: relative;
            overflow: hidden;
        }
        .hero-guide::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0,229,255,0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-guide::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(124,77,255,0.05) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-guide .container { position: relative; z-index: 1; }
        .hero-guide h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .hero-guide h1 i { color: var(--clr-primary); margin-right: 10px; text-shadow: 0 0 24px var(--clr-neon-glow-strong); }
        .hero-guide .lead {
            font-size: 1.15rem;
            color: var(--clr-text-dim);
            max-width: 680px;
            margin-bottom: 32px;
        }
        .hero-guide .lead strong { color: var(--clr-primary); font-weight: 600; }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            background: rgba(0,229,255,0.08);
            border: 1px solid rgba(0,229,255,0.2);
            border-radius: 30px;
            font-size: 0.85rem;
            color: var(--clr-text-dim);
        }
        .hero-badge i { color: var(--clr-primary); }
        .hero-badge .num { color: var(--clr-text); font-weight: 600; }

        @media screen and (max-width: 768px) {
            .hero-guide { padding: 60px 0 50px; }
            .hero-guide h1 { font-size: 1.8rem; }
            .hero-guide .lead { font-size: 0.98rem; }
            .hero-badges { gap: 8px; }
            .hero-badge { font-size: 0.78rem; padding: 6px 14px; }
        }

        /* ===== 卡片系统 ===== */
        .card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            padding: 28px 24px;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            background: var(--clr-bg-card-hover);
            border-color: var(--clr-primary-dim);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 16px;
            background: rgba(0,229,255,0.1);
            color: var(--clr-primary);
            border: 1px solid rgba(0,229,255,0.15);
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--clr-text);
        }
        .card p {
            color: var(--clr-text-dim);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(0,229,255,0.1);
            color: var(--clr-primary);
            border: 1px solid rgba(0,229,255,0.15);
            margin-top: 12px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 30px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
            color: #0b0d15;
            box-shadow: 0 4px 24px rgba(0, 229, 255, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 40px rgba(0, 229, 255, 0.5);
            color: #0b0d15;
        }
        .btn-outline {
            background: transparent;
            color: var(--clr-primary);
            border: 1px solid var(--clr-primary);
            box-shadow: 0 0 20px transparent;
        }
        .btn-outline:hover {
            background: rgba(0,229,255,0.08);
            box-shadow: 0 0 30px var(--clr-neon-glow);
            transform: translateY(-2px);
            color: var(--clr-primary);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

        /* ===== 入口方式网格 ===== */
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        /* ===== 步骤流程 ===== */
        .step-list {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
            counter-reset: step;
        }
        .step-item {
            flex: 1 1 180px;
            max-width: 220px;
            text-align: center;
            position: relative;
            padding: 28px 16px 20px;
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .step-item:hover {
            border-color: var(--clr-primary-dim);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
            color: #0b0d15;
            font-weight: 700;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px var(--clr-neon-glow);
        }
        .step-item i {
            font-size: 2rem;
            color: var(--clr-primary);
            margin-bottom: 12px;
            display: block;
        }
        .step-item h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--clr-text-dim);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            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: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--clr-primary-dim);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 18px 24px;
            text-align: left;
            font-size: 1rem;
            font-weight: 500;
            color: var(--clr-text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: all var(--transition);
        }
        .faq-question i {
            color: var(--clr-primary);
            transition: transform 0.3s;
            flex-shrink: 0;
        }
        .faq-question.active i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--clr-text-dim);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-answer a {
            color: var(--clr-primary);
            border-bottom: 1px dotted var(--clr-primary-dim);
        }
        .faq-answer a:hover {
            color: var(--clr-secondary);
        }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: linear-gradient(145deg, var(--clr-bg-alt), #141a2e);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0,229,255,0.05) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-block h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-block p {
            color: var(--clr-text-dim);
            max-width: 520px;
            margin: 0 auto 24px;
        }
        .cta-block .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        @media screen and (max-width: 640px) {
            .cta-block { padding: 36px 20px; }
            .cta-block h2 { font-size: 1.3rem; }
        }

        /* ===== 数据统计 ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }
        .stat-card {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            padding: 24px 16px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-card:hover {
            border-color: var(--clr-primary-dim);
            transform: translateY(-2px);
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: var(--clr-text-dim);
            margin-top: 4px;
        }

        /* ===== 内容列表 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 18px 20px;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            transition: all var(--transition);
        }
        .content-item:hover {
            border-color: var(--clr-primary-dim);
            transform: translateX(4px);
        }
        .content-item .idx {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(0,229,255,0.1);
            border: 1px solid rgba(0,229,255,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--clr-primary);
            font-size: 0.85rem;
        }
        .content-item .body h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .content-item .body p {
            font-size: 0.88rem;
            color: var(--clr-text-dim);
        }
        .content-item .badge {
            flex-shrink: 0;
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 500;
            background: rgba(0,229,255,0.08);
            color: var(--clr-primary);
            border: 1px solid rgba(0,229,255,0.12);
        }

        /* ===== 页面内导航标签 ===== */
        .page-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .page-tab {
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 500;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            color: var(--clr-text-dim);
            transition: all var(--transition);
            cursor: pointer;
        }
        .page-tab:hover {
            border-color: var(--clr-primary-dim);
            color: var(--clr-text);
        }
        .page-tab.active {
            background: rgba(0,229,255,0.12);
            border-color: var(--clr-primary);
            color: var(--clr-primary);
            box-shadow: 0 0 20px var(--clr-neon-glow);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--clr-bg-alt);
            border-top: 1px solid var(--clr-border);
            padding: 56px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .site-logo { margin-bottom: 12px; }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--clr-text-dim);
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--clr-text);
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.88rem;
            color: var(--clr-text-dim);
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--clr-primary);
            padding-left: 4px;
        }
        .footer-col a i { width: 20px; color: var(--clr-primary-dim); }
        .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--clr-text-muted);
        }

        @media screen and (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media screen and (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
        }

        /* ===== 响应式辅助 ===== */
        @media screen and (max-width: 480px) {
            .entry-grid { grid-template-columns: 1fr; }
            .step-list { flex-direction: column; align-items: center; }
            .step-item { max-width: 100%; width: 100%; }
            .stat-grid { grid-template-columns: 1fr 1fr; }
            .content-item { flex-wrap: wrap; }
        }

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

        /* ===== Foundation 覆盖 ===== */
        .grid-container { max-width: 1200px; padding: 0 24px; }
        .grid-x { margin: 0 -12px; }
        .cell { padding: 12px; }

        /* 暗色滚动条 */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--clr-bg); }
        ::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--clr-border-light); }

        /* focus可访问性 */
        a:focus-visible, button:focus-visible, .btn:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 2px;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c5ce7;
            --primary-light: #a29bfe;
            --primary-dark: #4a3db8;
            --accent: #00cec9;
            --accent-light: #81ecec;
            --accent-dark: #00b3b0;
            --highlight: #fd79a8;
            --highlight-light: #fab1c8;
            --dark-bg: #0a0a1a;
            --dark-surface: #12122a;
            --dark-card: #1a1a3e;
            --dark-border: #2a2a5a;
            --body-bg: #f4f6fb;
            --body-text: #2d3436;
            --text-light: #636e72;
            --text-white: #f0f0f8;
            --text-muted: #9a9ab0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(108, 92, 231, 0.12);
            --shadow-hover: 0 12px 40px rgba(108, 92, 231, 0.22);
            --shadow-neon: 0 0 30px rgba(108, 92, 231, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Roboto, system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--body-bg);
            color: var(--body-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--body-text); }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

        /* ===== 暗色霓虹导航 ===== */
        .site-header {
            background: var(--dark-bg);
            border-bottom: 2px solid var(--primary);
            box-shadow: 0 2px 30px rgba(108, 92, 231, 0.15);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0 0;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 20px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white) !important;
            letter-spacing: 0.5px;
        }
        .site-logo i {
            color: var(--accent);
            font-size: 1.6rem;
            text-shadow: 0 0 20px rgba(0, 206, 201, 0.5);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--text-white) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            color: var(--text-muted);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: var(--transition);
            box-shadow: 0 0 12px rgba(0, 206, 201, 0.6);
        }
        .nav-list a:hover { color: var(--text-white); background: rgba(108, 92, 231, 0.15); }
        .nav-list a:hover::after { width: 60%; }
        .nav-list a.active {
            color: var(--text-white);
            background: rgba(108, 92, 231, 0.2);
        }
        .nav-list a.active::after {
            width: 60%;
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%) !important;
            color: var(--text-white) !important;
            padding: 8px 24px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.35);
            border: 1px solid rgba(162, 155, 254, 0.2);
        }
        .nav-cta i { margin-right: 6px; }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 92, 231, 0.5) !important;
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%) !important;
        }
        .nav-cta::after { display: none !important; }

        /* ===== 文章主体布局 ===== */
        .article-wrapper {
            padding: 48px 0 60px;
        }
        .article-container {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a { color: var(--primary); }
        .breadcrumb a:hover { color: var(--primary-dark); }
        .breadcrumb span { color: var(--text-muted); }
        .breadcrumb i { font-size: 0.7rem; color: var(--text-muted); }

        .article-header {
            margin-bottom: 32px;
            padding-bottom: 28px;
            border-bottom: 1px solid rgba(0,0,0,0.06);
        }
        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--body-text);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.95rem;
            color: var(--text-light);
        }
        .article-meta .category-tag {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .article-meta .date {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .date i { color: var(--primary-light); }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--body-text);
        }
        .article-body p {
            margin-bottom: 1.4em;
        }
        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-top: 2em;
            margin-bottom: 0.8em;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
        }
        .article-body ul, .article-body ol {
            margin-bottom: 1.4em;
            padding-left: 24px;
        }
        .article-body ul li {
            list-style: disc;
            margin-bottom: 0.4em;
        }
        .article-body ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover { color: var(--primary-dark); }
        .article-body blockquote {
            margin: 1.8em 0;
            padding: 20px 24px;
            background: rgba(108, 92, 231, 0.06);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 1.8em auto;
            box-shadow: var(--shadow);
        }
        .article-body pre {
            background: var(--dark-bg);
            color: var(--text-white);
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.8em 0;
            font-size: 0.9rem;
            border: 1px solid var(--dark-border);
        }
        .article-body code {
            background: rgba(108, 92, 231, 0.1);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            font-family: 'Fira Code', 'Consolas', monospace;
        }
        .article-body pre code {
            background: none;
            padding: 0;
            border-radius: 0;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8em 0;
            border-radius: var(--radius);
            overflow: hidden;
        }
        .article-body th, .article-body td {
            padding: 12px 16px;
            border: 1px solid rgba(0,0,0,0.06);
            text-align: left;
        }
        .article-body th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .article-body td { background: #fff; }
        .article-body hr {
            margin: 2em 0;
            border: none;
            height: 1px;
            background: rgba(0,0,0,0.06);
        }

        /* ===== 文章底部 ===== */
        .article-footer {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid rgba(0,0,0,0.06);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .article-tags .tag {
            display: inline-block;
            background: rgba(108, 92, 231, 0.08);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid rgba(108, 92, 231, 0.15);
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-share span { font-size: 0.9rem; color: var(--text-light); }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(108, 92, 231, 0.08);
            color: var(--primary);
            font-size: 1rem;
            transition: var(--transition);
        }
        .article-share a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 文章导航（上下篇） ===== */
        .article-nav {
            margin-top: 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .article-nav a {
            display: flex;
            flex-direction: column;
            padding: 20px 24px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid rgba(0,0,0,0.06);
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .article-nav a:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .article-nav .nav-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-nav .nav-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--body-text);
            line-height: 1.4;
        }
        .article-nav .nav-next { text-align: right; }
        .article-nav .nav-next .nav-label { justify-content: flex-end; }

        /* ===== 错误状态 ===== */
        .article-not-found {
            text-align: center;
            padding: 80px 24px;
        }
        .article-not-found i {
            font-size: 4rem;
            color: var(--primary-light);
            margin-bottom: 24px;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-light);
            font-size: 1.1rem;
            margin-bottom: 28px;
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        /* ===== CTA 区域 ===== */
        .article-cta {
            margin-top: 48px;
            padding: 40px 48px;
            background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-surface) 100%);
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--dark-border);
            box-shadow: var(--shadow-neon);
        }
        .article-cta h3 {
            color: var(--text-white);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .article-cta p {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 24px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .article-cta .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 40px;
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 4px 24px rgba(0, 206, 201, 0.35);
        }
        .article-cta .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 40px rgba(0, 206, 201, 0.5);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark-bg);
            color: var(--text-muted);
            padding: 60px 0 30px;
            border-top: 2px solid var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo {
            margin-bottom: 16px;
            font-size: 1.2rem;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 380px;
        }
        .footer-col h5 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .footer-col a i { width: 20px; margin-right: 6px; color: var(--primary-light); }
        .footer-bottom {
            border-top: 1px solid var(--dark-border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-header h1 { font-size: 1.8rem; }
            .article-container { max-width: 720px; }
        }

        @media (max-width: 768px) {
            .site-header .container { height: 60px; }
            .nav-toggle { display: block; }
            .nav-list {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--dark-surface);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 2px solid var(--primary);
                box-shadow: 0 20px 40px rgba(0,0,0,0.5);
                z-index: 999;
            }
            .nav-list.open { display: flex; }
            .nav-list a { width: 100%; padding: 12px 16px; }
            .nav-list a::after { display: none; }
            .nav-cta { text-align: center; margin-top: 8px; }
            .article-wrapper { padding: 32px 0 40px; }
            .article-header h1 { font-size: 1.5rem; }
            .article-body { font-size: 1rem; }
            .article-nav { grid-template-columns: 1fr; }
            .article-cta { padding: 32px 24px; }
            .article-cta h3 { font-size: 1.25rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-container { padding: 0 16px; }
            .article-header h1 { font-size: 1.3rem; }
            .article-meta { gap: 10px; font-size: 0.85rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .article-cta { padding: 24px 16px; }
            .article-cta h3 { font-size: 1.1rem; }
            .article-nav a { padding: 16px 18px; }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }