/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --secondary: #e94560;
            --accent: #f5a623;
            --accent-light: #ffd369;
            --bg-dark: #0f0f1a;
            --bg-card: #1c1c32;
            --bg-section: #12121f;
            --text-light: #ffffff;
            --text-muted: #b0b0c8;
            --text-body: #e0e0f0;
            --border-color: #2a2a4a;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-light); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-light); font-weight: 700; }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin-bottom: 1rem; }
        h3 { font-size: clamp(1.2rem, 3vw, 1.6rem); }
        p { margin-bottom: 1rem; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: 50px;
            font-weight: 600; font-size: 1rem;
            border: none; cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            background: var(--secondary); color: #fff;
            box-shadow: 0 4px 16px rgba(233, 69, 96, 0.4);
        }
        .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(233, 69, 96, 0.5); color: #fff; }
        .btn:active { transform: translateY(0); }
        .btn-outline {
            background: transparent; border: 2px solid var(--accent);
            color: var(--accent); box-shadow: none;
        }
        .btn-outline:hover { background: var(--accent); color: #1a1a2e; box-shadow: 0 4px 20px rgba(245, 166, 35, 0.3); }
        .btn-accent {
            background: var(--accent); color: #1a1a2e;
            box-shadow: 0 4px 16px rgba(245, 166, 35, 0.4);
        }
        .btn-accent:hover { background: var(--accent-light); box-shadow: 0 8px 28px rgba(245, 166, 35, 0.5); color: #1a1a2e; }
        .btn-sm { padding: 8px 20px; font-size: 0.875rem; }

        /* ===== Badges & Tags ===== */
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            font-size: 0.75rem; font-weight: 600; text-transform: uppercase;
            background: rgba(233, 69, 96, 0.2); color: var(--secondary);
            border: 1px solid rgba(233, 69, 96, 0.3);
        }
        .badge-accent { background: rgba(245, 166, 35, 0.2); color: var(--accent); border-color: rgba(245, 166, 35, 0.3); }
        .tag {
            display: inline-block; padding: 4px 12px; border-radius: var(--radius-sm);
            font-size: 0.8rem; background: rgba(255,255,255,0.06); color: var(--text-muted);
            border: 1px solid var(--border-color); transition: var(--transition);
        }
        .tag:hover { background: rgba(255,255,255,0.1); color: var(--text-light); }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0;
            z-index: 1000; height: var(--header-height);
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.4rem; font-weight: 800; color: var(--text-light);
            display: flex; align-items: center; gap: 10px;
            text-decoration: none; letter-spacing: 0.5px;
        }
        .logo i { color: var(--secondary); font-size: 1.6rem; }
        .logo span { background: linear-gradient(135deg, var(--accent-light), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { color: var(--text-light); }
        .nav { display: flex; align-items: center; gap: 8px; }
        .nav a {
            padding: 8px 18px; border-radius: 50px;
            color: var(--text-muted); font-weight: 500; font-size: 0.95rem;
            transition: var(--transition); position: relative;
            text-decoration: none;
        }
        .nav a:hover { color: var(--text-light); background: rgba(255,255,255,0.06); }
        .nav a.active { color: var(--text-light); background: rgba(233, 69, 96, 0.2); }
        .nav .cta-nav {
            background: var(--secondary); color: #fff;
            padding: 8px 24px; border-radius: 50px;
            font-weight: 600;
        }
        .nav .cta-nav:hover { background: #d43d56; color: #fff; }
        .nav-toggle {
            display: none; background: none; border: none;
            color: var(--text-light); font-size: 1.5rem;
            cursor: pointer; padding: 8px;
        }
        .mobile-nav {
            display: none; position: fixed; top: var(--header-height);
            left: 0; right: 0; background: rgba(15,15,26,0.98);
            backdrop-filter: blur(20px); padding: 24px;
            border-bottom: 1px solid var(--border-color);
            z-index: 999;
        }
        .mobile-nav a {
            display: block; padding: 12px 16px; color: var(--text-muted);
            font-size: 1.05rem; border-radius: var(--radius-sm);
            transition: var(--transition); text-decoration: none;
        }
        .mobile-nav a:hover { background: rgba(255,255,255,0.06); color: var(--text-light); }
        .mobile-nav a.active { color: var(--accent); background: rgba(245,166,35,0.1); }
        .mobile-nav .cta-nav { background: var(--secondary); color: #fff; text-align: center; margin-top: 12px; }
        .mobile-nav.open { display: block; }

        @media (max-width: 768px) {
            .nav { display: none; }
            .nav-toggle { display: block; }
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh; display: flex; align-items: center;
            position: relative; overflow: hidden;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding-top: var(--header-height);
        }
        .hero::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,15,26,0.85) 0%, rgba(26,26,46,0.7) 50%, rgba(15,15,26,0.85) 100%);
            z-index: 1;
        }
        .hero .container { position: relative; z-index: 2; text-align: center; padding: 80px 24px; }
        .hero h1 { font-size: clamp(2.4rem, 6vw, 4rem); font-weight: 900; margin-bottom: 1.2rem; }
        .hero h1 span { background: linear-gradient(135deg, var(--accent-light), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p {
            font-size: clamp(1.1rem, 2.5vw, 1.4rem); color: var(--text-muted);
            max-width: 680px; margin: 0 auto 2rem;
        }
        .hero .hero-badges { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 2rem; }
        .hero .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Section ===== */
        .section { padding: 80px 0; }
        .section-dark { background: var(--bg-section); }
        .section-card { background: var(--bg-card); }
        .section-title { text-align: center; margin-bottom: 3rem; }
        .section-title h2 { margin-bottom: 0.5rem; }
        .section-title p { color: var(--text-muted); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

        /* ===== Grid / Cards ===== */
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
        }

        .card {
            background: var(--bg-card); border-radius: var(--radius-md);
            border: 1px solid var(--border-color); overflow: hidden;
            transition: var(--transition); 
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(255,255,255,0.1); }
        .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .card-body { padding: 24px; }
        .card-body h3 { margin-bottom: 8px; font-size: 1.15rem; }
        .card-body p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 12px; }
        .card-meta { display: flex; gap: 16px; font-size: 0.85rem; color: var(--text-muted); }
        .card-meta i { margin-right: 4px; }
        .card-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

        /* ===== Feature / Icon Cards ===== */
        .icon-card { text-align: center; padding: 36px 24px; background: var(--bg-card); border-radius: var(--radius-md); border: 1px solid var(--border-color); transition: var(--transition); }
        .icon-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .icon-card .icon { font-size: 2.8rem; margin-bottom: 16px; color: var(--secondary); }
        .icon-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
        .icon-card p { color: var(--text-muted); font-size: 0.95rem; margin: 0; }

        /* ===== Stats ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: 1fr 1fr; } }
        .stat-item { padding: 24px; }
        .stat-number { font-size: 2.8rem; font-weight: 900; background: linear-gradient(135deg, var(--accent-light), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .stat-label { color: var(--text-muted); font-size: 0.95rem; margin-top: 4px; }

        /* ===== Steps ===== */
        .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; counter-reset: step; }
        @media (max-width: 768px) { .steps { grid-template-columns: 1fr; gap: 24px; } }
        .step-item { text-align: center; position: relative; counter-increment: step; }
        .step-item::before {
            content: counter(step); position: absolute; top: -12px; left: 50%;
            transform: translateX(-50%); width: 48px; height: 48px;
            background: var(--secondary); color: #fff;
            border-radius: 50%; display: flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1.2rem; box-shadow: 0 4px 16px rgba(233,69,96,0.4);
        }
        .step-body { padding-top: 52px; }
        .step-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .step-body p { color: var(--text-muted); font-size: 0.95rem; margin: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card); border: 1px solid var(--border-color);
            border-radius: var(--radius-sm); overflow: hidden;
            transition: var(--transition);
        }
        .faq-question {
            padding: 20px 24px; display: flex; justify-content: space-between;
            align-items: center; cursor: pointer; font-weight: 600;
            color: var(--text-light); font-size: 1.05rem;
            user-select: none; transition: var(--transition);
        }
        .faq-question:hover { background: rgba(255,255,255,0.03); }
        .faq-question i { transition: var(--transition); color: var(--accent); font-size: 1.2rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px; color: var(--text-muted); font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px; padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative; padding: 100px 0; text-align: center;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.9) 0%, rgba(15,15,26,0.85) 100%);
            z-index: 1;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 1rem; }
        .cta-section p { color: var(--text-muted); max-width: 560px; margin: 0 auto 2rem; font-size: 1.1rem; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary); border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
        .footer-brand .logo { margin-bottom: 12px; }
        .footer-brand p { color: var(--text-muted); font-size: 0.9rem; max-width: 300px; }
        .footer-col h4 { font-size: 1rem; margin-bottom: 16px; color: var(--text-light); }
        .footer-col a {
            display: block; padding: 4px 0; color: var(--text-muted);
            font-size: 0.9rem; text-decoration: none;
        }
        .footer-col a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid var(--border-color); padding-top: 20px;
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 12px;
            color: var(--text-muted); font-size: 0.85rem;
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
            border-radius: 50%; background: rgba(255,255,255,0.06); color: var(--text-muted);
            transition: var(--transition); text-decoration: none;
        }
        .footer-social a:hover { background: var(--secondary); color: #fff; }

        /* ===== Content List ===== */
        .content-list { display: flex; flex-direction: column; gap: 16px; }
        .content-item {
            display: flex; gap: 20px; padding: 20px 24px;
            background: var(--bg-card); border-radius: var(--radius-sm);
            border: 1px solid var(--border-color); transition: var(--transition);
            align-items: flex-start;
        }
        .content-item:hover { border-color: rgba(255,255,255,0.15); box-shadow: var(--shadow-sm); }
        .content-item .thumb { width: 120px; height: 80px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
        .content-item .info { flex: 1; }
        .content-item .info h3 { font-size: 1.05rem; margin-bottom: 4px; }
        .content-item .info h3 a { color: var(--text-light); text-decoration: none; }
        .content-item .info h3 a:hover { color: var(--accent); }
        .content-item .info p { color: var(--text-muted); font-size: 0.9rem; margin: 0 0 6px; }
        .content-item .meta { font-size: 0.8rem; color: var(--text-muted); display: flex; gap: 16px; }
        @media (max-width: 520px) {
            .content-item { flex-direction: column; }
            .content-item .thumb { width: 100%; height: 160px; }
        }

        /* ===== Empty State ===== */
        .empty-state { text-align: center; padding: 48px 24px; color: var(--text-muted); }
        .empty-state i { font-size: 3rem; margin-bottom: 16px; color: var(--border-color); }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .section { padding: 60px 0; }
        }
        @media (max-width: 768px) {
            .section { padding: 48px 0; }
            .hero { min-height: 80vh; }
            .hero .container { padding: 60px 16px; }
        }
        @media (max-width: 520px) {
            .section { padding: 36px 0; }
            .hero { min-height: 70vh; }
            .hero .container { padding: 40px 12px; }
            .btn { padding: 10px 24px; font-size: 0.9rem; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #A29BFE;
            --secondary: #FDCB6E;
            --secondary-light: #FFEAA7;
            --accent: #FF6B6B;
            --accent-light: #FF9F9F;
            --dark: #1a1a2e;
            --dark-light: #16213e;
            --dark-mid: #0f3460;
            --bg: #F0F2F5;
            --bg-card: #FFFFFF;
            --text: #2D3436;
            --text-light: #636e72;
            --text-white: #FFFFFF;
            --border: #e1e5eb;
            --border-light: #f1f2f6;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 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);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }

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

        /* ===== 头部导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(26, 26, 46, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--secondary);
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo span {
            background: linear-gradient(135deg, #fff 60%, var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
        }
        .nav a.active {
            color: var(--text-white);
            background: rgba(108, 92, 231, 0.35);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--secondary);
        }
        .nav a.cta-nav {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.35);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: 6px;
        }
        .nav a.cta-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(108, 92, 231, 0.5);
            background: linear-gradient(135deg, var(--primary-dark), #4A3DB5);
        }
        .nav a.cta-nav i {
            font-size: 0.85rem;
        }
        .nav-toggle {
            display: none;
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* ===== 移动端导航 ===== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(26, 26, 46, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            z-index: 999;
            padding: 24px;
            flex-direction: column;
            gap: 12px;
            overflow-y: auto;
            opacity: 0;
            transform: translateY(-12px);
            transition: opacity 0.35s ease, transform 0.35s ease;
            pointer-events: none;
        }
        .mobile-nav.open {
            display: flex;
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .mobile-nav a {
            display: block;
            padding: 14px 20px;
            border-radius: var(--radius);
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-nav a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }
        .mobile-nav a.active {
            background: rgba(108, 92, 231, 0.25);
            color: var(--secondary);
            border-color: rgba(108, 92, 231, 0.3);
        }
        .mobile-nav a.cta-nav {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            text-align: center;
            font-weight: 700;
            border: none;
            margin-top: 8px;
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            margin-top: var(--header-h);
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 50%, var(--dark-mid) 100%);
            position: relative;
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(108, 92, 231, 0.25) 0%, transparent 70%),
                radial-gradient(ellipse at 80% 50%, rgba(253, 203, 110, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 780px;
            margin: 0 auto;
        }
        .hero-content h1 {
            color: var(--text-white);
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 16px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .hero-content h1 i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .hero-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.2rem;
            line-height: 1.7;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .hero-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: var(--radius-xl);
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.95rem;
            font-weight: 500;
        }
        .hero-tags span i {
            color: var(--secondary);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-header h2 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .section-header p {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto;
        }
        .section-header .badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: var(--radius-xl);
            background: rgba(108, 92, 231, 0.1);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-bg-light {
            background: var(--bg-card);
        }
        .section-bg-alt {
            background: var(--bg);
        }
        .section-bg-dark {
            background: var(--dark);
        }
        .section-bg-dark .section-header h2 {
            color: var(--text-white);
        }
        .section-bg-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-bg-dark .section-header .badge {
            background: rgba(253, 203, 110, 0.15);
            color: var(--secondary);
        }

        /* ===== 筛选标签 ===== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 40px;
        }
        .filter-bar .filter-btn {
            padding: 8px 24px;
            border-radius: var(--radius-xl);
            background: var(--bg-card);
            border: 1px solid var(--border);
            color: var(--text-light);
            font-size: 0.95rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
        }
        .filter-bar .filter-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(108, 92, 231, 0.04);
        }
        .filter-bar .filter-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.3);
        }

        /* ===== 游戏卡片网格 ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .game-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(108, 92, 231, 0.15);
        }
        .game-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--dark-light);
        }
        .game-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .game-card:hover .card-img img {
            transform: scale(1.05);
        }
        .game-card .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: var(--radius-xl);
            background: rgba(255, 107, 107, 0.9);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .game-card .card-img .card-badge.hot {
            background: rgba(253, 203, 110, 0.9);
            color: #1a1a2e;
        }
        .game-card .card-img .card-badge.new {
            background: rgba(0, 206, 201, 0.9);
            color: #fff;
        }
        .game-card .card-img .card-badge.recommend {
            background: rgba(108, 92, 231, 0.9);
            color: #fff;
        }
        .game-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .game-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }
        .game-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .game-card .card-body .card-meta .stars {
            color: var(--secondary);
            letter-spacing: 1px;
        }
        .game-card .card-body .card-meta .type {
            padding: 2px 12px;
            border-radius: var(--radius-xl);
            background: rgba(108, 92, 231, 0.08);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
        }
        .game-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .game-card .card-body .card-btn {
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            text-align: center;
            transition: var(--transition);
            border: none;
            width: 100%;
        }
        .game-card .card-body .card-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.35);
        }

        /* ===== 特色推荐（编辑精选） ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .featured-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .featured-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .featured-card .featured-img {
            position: relative;
            aspect-ratio: 21 / 9;
            overflow: hidden;
            background: var(--dark);
        }
        .featured-card .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .featured-card:hover .featured-img img {
            transform: scale(1.03);
        }
        .featured-card .featured-img .featured-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 30px 24px 20px;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
            color: #fff;
        }
        .featured-card .featured-img .featured-overlay .tag {
            display: inline-block;
            padding: 3px 14px;
            border-radius: var(--radius-xl);
            background: var(--secondary);
            color: var(--dark);
            font-size: 0.78rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .featured-card .featured-img .featured-overlay h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
        }
        .featured-card .featured-img .featured-overlay .stars {
            color: var(--secondary);
            font-size: 0.9rem;
            margin-top: 4px;
        }
        .featured-card .featured-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .featured-card .featured-body p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .featured-card .featured-body .featured-btn {
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.95rem;
            text-align: center;
            transition: var(--transition);
            align-self: flex-start;
        }
        .featured-card .featured-body .featured-btn:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .news-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: rgba(108, 92, 231, 0.12);
        }
        .news-item .news-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: var(--radius-xl);
            background: rgba(108, 92, 231, 0.08);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .news-item .news-tag.hot-tag {
            background: rgba(255, 107, 107, 0.1);
            color: var(--accent);
        }
        .news-item .news-tag.strategy {
            background: rgba(0, 206, 201, 0.1);
            color: #00CEC9;
        }
        .news-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .news-item .news-meta a {
            color: var(--primary);
            font-weight: 600;
        }
        .news-item .news-meta a:hover {
            color: var(--primary-dark);
        }

        /* ===== 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);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(108, 92, 231, 0.15);
        }
        .faq-item .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--text);
            background: transparent;
            width: 100%;
            text-align: left;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-item .faq-question:hover {
            background: rgba(108, 92, 231, 0.03);
        }
        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(108, 92, 231, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(108, 92, 231, 0.2) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(253, 203, 110, 0.1) 0%, transparent 50%);
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 620px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: var(--text-white);
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.1rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-content .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, var(--secondary), #f0b830);
            color: var(--dark);
            font-size: 1.1rem;
            font-weight: 700;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(253, 203, 110, 0.3);
        }
        .cta-content .cta-btn:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(253, 203, 110, 0.45);
        }
        .cta-content .cta-btn i {
            font-size: 1rem;
        }
        .cta-content .cta-sub {
            margin-top: 16px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.85rem;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }
        .footer .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer .footer-bottom a:hover {
            color: var(--secondary);
        }
        .footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer .footer-social a:hover {
            background: rgba(253, 203, 110, 0.15);
            color: var(--secondary);
            transform: translateY(-3px);
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .game-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .news-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer .footer-brand {
                grid-column: 1 / -1;
            }
            .hero-content h1 {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            .nav {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .page-hero {
                padding: 80px 0 60px;
                min-height: 320px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content p {
                font-size: 1rem;
            }
            .hero-tags span {
                padding: 6px 16px;
                font-size: 0.85rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-content h2 {
                font-size: 1.7rem;
            }
            .cta-content .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }
            .filter-bar .filter-btn {
                padding: 6px 18px;
                font-size: 0.85rem;
            }
            .faq-item .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-content p {
                font-size: 0.92rem;
            }
            .hero-tags {
                gap: 8px;
            }
            .hero-tags span {
                font-size: 0.78rem;
                padding: 5px 12px;
            }
            .game-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .section-header p {
                font-size: 0.92rem;
            }
            .page-hero {
                padding: 64px 0 48px;
                min-height: 280px;
            }
            .section {
                padding: 40px 0;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
            .game-card .card-body {
                padding: 14px 16px 16px;
            }
            .featured-card .featured-body {
                padding: 16px 18px 20px;
            }
            .featured-card .featured-img .featured-overlay h3 {
                font-size: 1.1rem;
            }
            .cta-content h2 {
                font-size: 1.4rem;
            }
            .cta-content .cta-btn {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .news-item {
                padding: 18px;
            }
            .footer {
                padding: 40px 0 0;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #4F46E5;
            --primary-dark: #4338CA;
            --primary-light: #818CF8;
            --secondary: #10B981;
            --secondary-dark: #059669;
            --secondary-light: #34D399;
            --accent: #F59E0B;
            --bg: #F8FAFC;
            --bg-alt: #F1F5F9;
            --bg-dark: #0F172A;
            --text: #1E293B;
            --text-light: #64748B;
            --text-white: #F8FAFC;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

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

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

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

        a:hover {
            color: var(--primary-dark);
        }

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

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: var(--shadow-sm);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            text-decoration: none;
            letter-spacing: -0.5px;
        }

        .logo i {
            font-size: 28px;
            color: var(--primary);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav a {
            position: relative;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            text-decoration: none;
        }

        .nav a:hover {
            color: var(--primary);
            background: rgba(79, 70, 229, 0.06);
        }

        .nav a.active {
            color: var(--primary);
            background: rgba(79, 70, 229, 0.10);
            font-weight: 600;
        }

        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav a.cta-nav {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.30);
            transition: all var(--transition);
        }

        .nav a.cta-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(79, 70, 229, 0.40);
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
        }

        .nav a.cta-nav i {
            font-size: 12px;
            transition: transform var(--transition);
        }

        .nav a.cta-nav:hover i {
            transform: translateX(4px);
        }

        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        @media (max-width: 900px) {
            .nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
            }

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

            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }

            .nav a.cta-nav {
                justify-content: center;
                margin-top: 8px;
                padding: 14px 22px;
            }

            .nav a.active::after {
                display: none;
            }

            .nav a.active {
                background: rgba(79, 70, 229, 0.10);
            }

            .nav-toggle {
                display: block;
            }
        }

        @media (max-width: 480px) {
            .logo {
                font-size: 18px;
            }

            .logo i {
                font-size: 22px;
            }
        }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            margin-top: var(--nav-height);
            padding: 80px 0 60px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(15, 23, 42, 0.70) 50%, rgba(79, 70, 229, 0.50) 100%);
            z-index: 1;
        }

        .article-banner .container {
            position: relative;
            z-index: 2;
        }

        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            transition: color var(--transition);
        }

        .article-banner .breadcrumb a:hover {
            color: #fff;
        }

        .article-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.45);
        }

        .article-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
        }

        .article-banner .category-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(79, 70, 229, 0.85);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            border-radius: 50px;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
            backdrop-filter: blur(4px);
        }

        .article-banner h1 {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            max-width: 880px;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
        }

        .article-banner .meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
        }

        .article-banner .meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-banner .meta i {
            font-size: 14px;
            opacity: 0.7;
        }

        @media (max-width: 768px) {
            .article-banner {
                padding: 60px 0 40px;
            }

            .article-banner h1 {
                font-size: 28px;
            }

            .article-banner .meta {
                gap: 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 480px) {
            .article-banner h1 {
                font-size: 22px;
            }

            .article-banner {
                padding: 50px 0 32px;
            }
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 48px 0 64px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        /* ===== Article Content ===== */
        .article-content {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .article-content .featured-image {
            margin: -40px -44px 32px -44px;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            overflow: hidden;
            max-height: 420px;
        }

        .article-content .featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }

        .article-content .content-body {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text);
        }

        .article-content .content-body p {
            margin-bottom: 20px;
        }

        .article-content .content-body h2 {
            font-size: 26px;
            margin-top: 40px;
            margin-bottom: 16px;
            color: var(--text);
        }

        .article-content .content-body h3 {
            font-size: 20px;
            margin-top: 32px;
            margin-bottom: 12px;
            color: var(--text);
        }

        .article-content .content-body ul,
        .article-content .content-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }

        .article-content .content-body ul li {
            list-style: disc;
            margin-bottom: 6px;
        }

        .article-content .content-body ol li {
            list-style: decimal;
            margin-bottom: 6px;
        }

        .article-content .content-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content .content-body a:hover {
            color: var(--primary-dark);
        }

        .article-content .content-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-alt);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }

        .article-content .content-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-content .content-body code {
            background: var(--bg-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary);
        }

        .article-content .content-body pre {
            background: var(--bg-dark);
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 24px 0;
            font-size: 14px;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .article-content {
                padding: 24px 20px;
            }

            .article-content .featured-image {
                margin: -24px -20px 24px -20px;
                max-height: 260px;
            }

            .article-content .content-body {
                font-size: 16px;
                line-height: 1.75;
            }

            .article-content .content-body h2 {
                font-size: 22px;
            }

            .article-content .content-body h3 {
                font-size: 18px;
            }
        }

        @media (max-width: 480px) {
            .article-content {
                padding: 16px 14px;
            }

            .article-content .featured-image {
                margin: -16px -14px 20px -14px;
                max-height: 200px;
            }

            .article-content .content-body {
                font-size: 15px;
            }
        }

        /* ===== Article Tags & Share ===== */
        .article-footer-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .article-tags .tag {
            display: inline-block;
            padding: 5px 14px;
            background: var(--bg-alt);
            color: var(--text-light);
            font-size: 13px;
            font-weight: 500;
            border-radius: 50px;
            transition: all var(--transition);
            text-decoration: none;
        }

        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .article-share span {
            font-size: 14px;
            color: var(--text-light);
            font-weight: 500;
        }

        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text-light);
            font-size: 16px;
            transition: all var(--transition);
            text-decoration: none;
        }

        .article-share a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 600px) {
            .article-footer-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border);
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h3 i {
            color: var(--primary);
        }

        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            text-decoration: none;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .sidebar-list a:last-child {
            border-bottom: none;
        }

        .sidebar-list a:hover {
            padding-left: 6px;
        }

        .sidebar-list a .num {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-alt);
            color: var(--text-light);
            font-size: 13px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .sidebar-list a:hover .num {
            background: var(--primary);
            color: #fff;
        }

        .sidebar-list a .text {
            flex: 1;
            font-size: 14px;
            color: var(--text);
            line-height: 1.4;
            transition: color var(--transition);
        }

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

        .sidebar-list a .badge-hot {
            flex-shrink: 0;
            padding: 2px 10px;
            background: linear-gradient(135deg, #EF4444, #F97316);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            border-radius: 50px;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            text-align: center;
        }

        .sidebar-cta h3 {
            color: #fff;
            border-bottom-color: rgba(255, 255, 255, 0.20);
        }

        .sidebar-cta h3 i {
            color: rgba(255, 255, 255, 0.8);
        }

        .sidebar-cta p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.80);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .sidebar-cta .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            border-radius: 50px;
            text-decoration: none;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }

        .sidebar-cta .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
            background: var(--secondary);
            color: #fff;
        }

        @media (max-width: 1024px) {
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 56px 0 64px;
            background: var(--bg-alt);
        }

        .related-section .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .related-section .section-header h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 8px;
        }

        .related-section .section-header p {
            font-size: 16px;
            color: var(--text-light);
            max-width: 520px;
            margin: 0 auto;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            text-decoration: none;
            display: block;
            color: inherit;
        }

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

        .related-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            display: block;
            transition: transform 0.5s ease;
        }

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

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

        .related-card .card-cat {
            display: inline-block;
            padding: 3px 12px;
            background: rgba(79, 70, 229, 0.10);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: 50px;
            margin-bottom: 10px;
        }

        .related-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
            transition: color var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card:hover h3 {
            color: var(--primary);
        }

        .related-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-light);
        }

        .related-card .card-meta i {
            font-size: 12px;
            margin-right: 4px;
        }

        @media (max-width: 900px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }

            .related-section .section-header h2 {
                font-size: 24px;
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 64px 0;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(79, 70, 229, 0.70) 100%);
            z-index: 1;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.80);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.6;
        }

        .cta-section .btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .cta-section .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            border-radius: 50px;
            text-decoration: none;
            transition: all var(--transition);
            box-shadow: 0 6px 24px rgba(16, 185, 129, 0.35);
        }

        .cta-section .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(16, 185, 129, 0.45);
            background: linear-gradient(135deg, var(--secondary-dark), var(--secondary));
            color: #fff;
        }

        .cta-section .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: transparent;
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: 50px;
            border: 2px solid rgba(255, 255, 255, 0.40);
            text-decoration: none;
            transition: all var(--transition);
        }

        .cta-section .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.10);
            color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 640px) {
            .cta-section {
                padding: 48px 0;
            }

            .cta-section h2 {
                font-size: 26px;
            }

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

            .cta-section .btn-primary {
                padding: 14px 28px;
                font-size: 15px;
            }
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 56px 0 64px;
            background: #fff;
        }

        .faq-section .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-section .section-header h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text);
        }

        .faq-section .section-header p {
            font-size: 16px;
            color: var(--text-light);
            margin-top: 6px;
        }

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

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

        .faq-item:hover {
            border-color: var(--primary-light);
        }

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

        .faq-item .faq-q:hover {
            color: var(--primary);
        }

        .faq-item .faq-q i {
            font-size: 18px;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--primary);
        }

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

        .faq-item.open .faq-a {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        @media (max-width: 640px) {
            .faq-section .section-header h2 {
                font-size: 24px;
            }

            .faq-item .faq-q {
                padding: 14px 18px;
                font-size: 15px;
            }

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

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

        /* ===== Error State ===== */
        .error-state {
            padding: 80px 0 100px;
            text-align: center;
        }

        .error-state .error-icon {
            font-size: 72px;
            color: var(--text-light);
            margin-bottom: 24px;
            opacity: 0.5;
        }

        .error-state h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
        }

        .error-state p {
            font-size: 17px;
            color: var(--text-light);
            margin-bottom: 32px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }

        .error-state .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: 50px;
            text-decoration: none;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(79, 70, 229, 0.25);
        }

        .error-state .btn-home:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(79, 70, 229, 0.35);
            color: #fff;
        }

        @media (max-width: 640px) {
            .error-state {
                padding: 60px 0 80px;
            }

            .error-state .error-icon {
                font-size: 56px;
            }

            .error-state h2 {
                font-size: 26px;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }

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

        .footer .logo {
            color: #fff;
            margin-bottom: 12px;
        }

        .footer .logo i {
            -webkit-text-fill-color: var(--primary-light);
        }

        .footer .logo span {
            -webkit-text-fill-color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 340px;
        }

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

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
            padding: 5px 0;
            transition: all var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 24px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.40);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

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

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.50);
            font-size: 18px;
            transition: all var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        @media (max-width: 900px) {
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

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

        @media (max-width: 560px) {
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }

        .mb-0 {
            margin-bottom: 0;
        }

        .mt-2 {
            margin-top: 8px;
        }

        .gap-4 {
            gap: 16px;
        }

        /* ===== Empty state for list ===== */
        .empty-list {
            text-align: center;
            padding: 24px;
            color: var(--text-light);
            font-size: 15px;
            background: var(--bg);
            border-radius: var(--radius-md);
        }

        /* ===== Back to top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(79, 70, 229, 0.30);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: all var(--transition);
            text-decoration: none;
        }

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

        .back-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: 0 8px 28px rgba(79, 70, 229, 0.40);
            color: #fff;
        }

        @media (max-width: 640px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 18px;
            }
        }