/* roulang page: index */
:root {
            --primary: #6C63FF;
            --primary-dark: #5A52E0;
            --primary-light: #8B85FF;
            --secondary: #00D4AA;
            --secondary-dark: #00B894;
            --secondary-light: #3BE0C0;
            --bg-light: #F9FAFB;
            --bg-dark: #1A1A2E;
            --bg-card: #FFFFFF;
            --text-primary: #1A1A2E;
            --text-secondary: #6B7280;
            --text-light: #9CA3AF;
            --text-white: #FFFFFF;
            --border-color: #E5E7EB;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-lg: 0 8px 24px rgba(108,99,255,0.15);
            --shadow-xl: 0 12px 36px rgba(0,0,0,0.1);
            --font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
            --font-weight-bold: 700;
            --font-weight-normal: 400;
            --line-height: 1.6;
            --max-width: 1200px;
            --nav-width: 240px;
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-family);
            font-weight: var(--font-weight-normal);
            line-height: var(--line-height);
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        h1, h2, h3, h4, h5, h6 { font-weight: var(--font-weight-bold); line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }
        p { font-size: 1rem; color: var(--text-secondary); margin-bottom: 1.2em; }
        small { font-size: 0.85rem; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }
        .container-full { width: 100%; }

        /* Layout */
        .app-shell { display: flex; min-height: 100vh; }
        .sidebar {
            position: fixed; left: 0; top: 0; width: var(--nav-width); height: 100vh;
            background: var(--bg-dark); color: var(--text-white); z-index: 1000;
            display: flex; flex-direction: column; padding: 0; overflow-y: auto;
            transition: transform 0.3s ease;
        }
        .sidebar-logo {
            padding: 28px 20px 20px; border-bottom: 1px solid rgba(255,255,255,0.08);
            text-align: center;
        }
        .sidebar-logo a {
            display: inline-flex; align-items: center; gap: 10px;
            font-size: 1.35rem; font-weight: 700; color: var(--text-white);
            letter-spacing: 0.5px;
        }
        .sidebar-logo a:hover { color: var(--secondary); }
        .sidebar-logo .logo-icon {
            width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 10px; display: flex; align-items: center; justify-content: center;
            font-size: 1.1rem; font-weight: 700; color: #fff; flex-shrink: 0;
        }
        .sidebar-nav { flex: 1; padding: 16px 0; }
        .sidebar-nav .nav-item {
            display: flex; align-items: center; gap: 14px;
            padding: 14px 24px; color: rgba(255,255,255,0.7);
            font-size: 0.95rem; font-weight: 500; transition: var(--transition);
            border-left: 3px solid transparent;
        }
        .sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 1.05rem; }
        .sidebar-nav .nav-item:hover {
            color: var(--text-white); background: rgba(108,99,255,0.12);
            border-left-color: var(--primary);
        }
        .sidebar-nav .nav-item.active {
            color: var(--text-white); background: rgba(108,99,255,0.18);
            border-left-color: var(--secondary);
        }
        .sidebar-nav .nav-item.active i { color: var(--secondary); }
        .sidebar-footer {
            padding: 16px 20px; border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.8rem; color: rgba(255,255,255,0.4); text-align: center;
        }

        .main-content {
            margin-left: var(--nav-width); flex: 1; min-height: 100vh;
            width: calc(100% - var(--nav-width));
        }

        /* Top bar for mobile */
        .top-bar-mobile {
            display: none; position: sticky; top: 0; z-index: 999;
            background: var(--bg-dark); padding: 12px 20px;
            align-items: center; justify-content: space-between;
        }
        .top-bar-mobile .logo-mobile {
            color: var(--text-white); font-size: 1.15rem; font-weight: 700;
            display: flex; align-items: center; gap: 8px;
        }
        .top-bar-mobile .logo-mobile .logo-icon-sm {
            width: 30px; height: 30px; background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 8px; display: flex; align-items: center; justify-content: center;
            font-size: 0.9rem; font-weight: 700; color: #fff;
        }
        .menu-toggle {
            background: none; border: none; color: var(--text-white); font-size: 1.4rem;
            cursor: pointer; padding: 4px 8px; border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .menu-toggle:hover { background: rgba(255,255,255,0.1); }
        .sidebar-overlay {
            display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
            background: rgba(0,0,0,0.5); z-index: 998;
        }
        .sidebar-overlay.open { display: block; }
        .sidebar.open { transform: translateX(0); }

        /* Hero */
        .hero-section {
            position: relative; padding: 100px 0 80px; overflow: hidden;
            background: var(--bg-dark);
            min-height: 520px; display: flex; align-items: center;
        }
        .hero-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2; z-index: 0;
        }
        .hero-section::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.92) 0%, rgba(26,26,46,0.7) 100%);
            z-index: 1;
        }
        .hero-content { position: relative; z-index: 2; max-width: 780px; }
        .hero-content .hero-badge {
            display: inline-flex; align-items: center; gap: 6px;
            background: rgba(108,99,255,0.2); border: 1px solid rgba(108,99,255,0.3);
            padding: 6px 16px; border-radius: 20px; font-size: 0.85rem;
            color: var(--secondary); margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-content h1 {
            font-size: 3rem; color: var(--text-white); margin-bottom: 20px;
            line-height: 1.2; letter-spacing: -0.5px;
        }
        .hero-content h1 span { color: var(--secondary); }
        .hero-content .hero-sub {
            font-size: 1.15rem; color: rgba(255,255,255,0.75);
            margin-bottom: 32px; max-width: 600px; line-height: 1.7;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 14px 32px; border-radius: var(--radius-md); font-weight: 600;
            font-size: 0.95rem; cursor: pointer; transition: var(--transition);
            border: none; text-decoration: none; line-height: 1;
        }
        .btn i { font-size: 1rem; }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-white); box-shadow: 0 4px 14px rgba(108,99,255,0.3);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            box-shadow: 0 6px 24px rgba(108,99,255,0.4); transform: translateY(-2px);
            color: var(--text-white);
        }
        .btn-secondary {
            background: transparent; color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.25);
        }
        .btn-secondary:hover {
            border-color: var(--secondary); color: var(--secondary);
            background: rgba(0,212,170,0.08); transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent; color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); }
        .btn-cta {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: var(--bg-dark); box-shadow: 0 4px 14px rgba(0,212,170,0.3);
        }
        .btn-cta:hover {
            box-shadow: 0 6px 24px rgba(0,212,170,0.4); transform: translateY(-2px);
            color: var(--bg-dark);
        }

        /* Section common */
        .section { padding: 70px 0; }
        .section-alt { background: var(--bg-card); }
        .section-dark { background: var(--bg-dark); color: var(--text-white); }
        .section-title {
            text-align: center; margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem; color: var(--text-primary); margin-bottom: 12px;
        }
        .section-title p {
            font-size: 1.05rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto;
        }
        .section-dark .section-title h2 { color: var(--text-white); }
        .section-dark .section-title p { color: rgba(255,255,255,0.7); }

        /* Brand story */
        .story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .story-text h2 { margin-bottom: 16px; }
        .story-text p { font-size: 1.05rem; line-height: 1.8; }
        .story-image img { border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); width: 100%; object-fit: cover; }

        /* Cards Grid */
        .card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .card-item {
            background: var(--bg-card); border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md); overflow: hidden;
            transition: var(--transition); cursor: pointer;
            border: 1px solid var(--border-color);
        }
        .card-item:hover {
            transform: translateY(-6px); box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .card-item .card-img {
            width: 100%; height: 200px; object-fit: cover; border-radius: 0;
        }
        .card-item .card-body { padding: 20px 22px 24px; }
        .card-item .card-tag {
            display: inline-block; background: var(--secondary); color: #fff;
            padding: 3px 12px; border-radius: 4px; font-size: 0.75rem;
            font-weight: 600; margin-bottom: 10px; letter-spacing: 0.3px;
        }
        .card-item .card-tag.primary-tag { background: var(--primary); }
        .card-item h3 {
            font-size: 1.15rem; margin-bottom: 8px; color: var(--text-primary);
            line-height: 1.4;
        }
        .card-item .card-desc {
            font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 12px;
            display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
            overflow: hidden; line-height: 1.6;
        }
        .card-item .card-meta {
            display: flex; align-items: center; gap: 12px;
            font-size: 0.8rem; color: var(--text-light);
        }
        .card-item .card-meta i { font-size: 0.75rem; }

        /* Stats */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
        .stat-item { padding: 24px 16px; }
        .stat-item .stat-number {
            font-size: 2.8rem; font-weight: 700; color: var(--primary);
            line-height: 1.2; margin-bottom: 6px;
        }
        .stat-item .stat-label { font-size: 0.95rem; color: var(--text-secondary); font-weight: 500; }
        .section-dark .stat-item .stat-number { color: var(--secondary); }
        .section-dark .stat-item .stat-label { color: rgba(255,255,255,0.7); }

        /* Features */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .feature-card {
            background: var(--bg-card); border-radius: var(--radius-lg);
            padding: 32px 28px; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color); transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px); box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .feature-card .feature-icon {
            width: 56px; height: 56px; margin: 0 auto 16px;
            background: linear-gradient(135deg, rgba(108,99,255,0.1), rgba(0,212,170,0.08));
            border-radius: 14px; display: flex; align-items: center; justify-content: center;
            font-size: 1.4rem; color: var(--primary);
        }
        .feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
        .feature-card p { font-size: 0.9rem; margin-bottom: 0; }

        /* FAQ Accordion */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card); border-radius: var(--radius-md);
            margin-bottom: 12px; border: 1px solid var(--border-color);
            overflow: hidden; transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-item .faq-question {
            padding: 18px 24px; display: flex; align-items: center;
            justify-content: space-between; cursor: pointer;
            font-weight: 600; font-size: 1rem; color: var(--text-primary);
            background: none; border: none; width: 100%; text-align: left;
            transition: var(--transition);
        }
        .faq-item .faq-question:hover { color: var(--primary); }
        .faq-item .faq-question i { color: var(--text-light); transition: var(--transition); font-size: 0.85rem; }
        .faq-item .faq-question[aria-expanded="true"] i { transform: rotate(180deg); color: var(--primary); }
        .faq-item .faq-answer {
            padding: 0 24px 18px; font-size: 0.95rem; color: var(--text-secondary);
            line-height: 1.7; display: none;
        }
        .faq-item .faq-answer.open { display: block; }

        /* CTA / Subscribe */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #2D2B55 100%);
            padding: 80px 0; text-align: center;
        }
        .cta-section h2 { color: var(--text-white); font-size: 2rem; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.7); max-width: 520px; margin: 0 auto 28px; font-size: 1.05rem; }
        .cta-form { display: flex; gap: 12px; max-width: 480px; margin: 0 auto; flex-wrap: wrap; justify-content: center; }
        .cta-form input[type="email"] {
            flex: 1; min-width: 220px; padding: 14px 20px; border-radius: var(--radius-md);
            border: 2px solid rgba(255,255,255,0.15); background: rgba(255,255,255,0.06);
            color: var(--text-white); font-size: 0.95rem; outline: none;
            transition: var(--transition);
        }
        .cta-form input[type="email"]::placeholder { color: rgba(255,255,255,0.4); }
        .cta-form input[type="email"]:focus { border-color: var(--secondary); background: rgba(255,255,255,0.1); }

        /* Footer */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 48px 0 28px; border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
        .footer-brand .footer-logo {
            font-size: 1.2rem; font-weight: 700; color: var(--text-white); margin-bottom: 10px;
            display: flex; align-items: center; gap: 8px;
        }
        .footer-brand .footer-logo .logo-icon-sm {
            width: 28px; height: 28px; background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 7px; display: flex; align-items: center; justify-content: center;
            font-size: 0.8rem; color: #fff;
        }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); max-width: 320px; }
        .footer-col h4 {
            font-size: 0.95rem; color: var(--text-white); margin-bottom: 14px;
            font-weight: 600;
        }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a { font-size: 0.88rem; color: rgba(255,255,255,0.55); transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px;
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 12px;
        }
        .footer-bottom p { font-size: 0.82rem; color: rgba(255,255,255,0.4); margin-bottom: 0; }
        .footer-bottom .footer-links { display: flex; gap: 18px; }
        .footer-bottom .footer-links a { font-size: 0.82rem; color: rgba(255,255,255,0.4); }
        .footer-bottom .footer-links a:hover { color: var(--secondary); }

        /* Empty state */
        .empty-state {
            text-align: center; padding: 48px 20px; color: var(--text-light);
        }
        .empty-state i { font-size: 2.4rem; margin-bottom: 12px; color: var(--border-color); }
        .empty-state p { font-size: 1rem; }

        /* Breadcrumb placeholder for article/category pages */
        .breadcrumb-area { padding: 16px 0; font-size: 0.85rem; color: var(--text-light); }
        .breadcrumb-area a { color: var(--text-secondary); }
        .breadcrumb-area a:hover { color: var(--primary); }
        .breadcrumb-area span { margin: 0 6px; }

        /* Responsive */
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .sidebar { transform: translateX(-100%); }
            .sidebar.open { transform: translateX(0); }
            .top-bar-mobile { display: flex; }
            .main-content { margin-left: 0; width: 100%; }
            .hero-section { padding: 60px 0 50px; min-height: auto; }
            .hero-content h1 { font-size: 1.8rem; }
            .hero-content .hero-sub { font-size: 1rem; }
            .story-grid { grid-template-columns: 1fr; gap: 28px; }
            .story-image { order: -1; }
            .card-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid .stat-item .stat-number { font-size: 2rem; }
            .section { padding: 48px 0; }
            .section-title { margin-bottom: 32px; }
            .section-title h2 { font-size: 1.5rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section { padding: 56px 0; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-form input[type="email"] { min-width: 100%; }
            .cta-form .btn { width: 100%; justify-content: center; }
            .hero-actions .btn { flex: 1; min-width: 140px; justify-content: center; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-content h1 { font-size: 1.5rem; }
            .hero-content .hero-sub { font-size: 0.9rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item .stat-number { font-size: 1.7rem; }
            .card-item .card-img { height: 160px; }
            .feature-card { padding: 24px 18px; }
        }

        /* Accessibility */
        .btn:focus-visible, .faq-item .faq-question:focus-visible, input:focus-visible {
            outline: 3px solid var(--primary); outline-offset: 2px;
        }
        .card-item:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }

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

        /* Category page hero placeholder style (used in nav) */
        .badge-new {
            background: var(--secondary); color: var(--bg-dark);
            font-size: 0.65rem; font-weight: 700; padding: 2px 8px; border-radius: 10px;
            margin-left: auto; letter-spacing: 0.3px;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6C63FF;
            --primary-dark: #5a52e0;
            --secondary: #00D4AA;
            --secondary-dark: #00b894;
            --bg-light: #F9FAFB;
            --bg-dark: #1A1A2E;
            --text-dark: #1a1a2e;
            --text-muted: #6b7280;
            --text-white: #ffffff;
            --border-color: #e5e7eb;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 6px;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(108, 99, 255, 0.15);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --sidebar-width: 240px;
            --transition: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-weight: 400;
            line-height: 1.6;
            background: var(--bg-light);
            color: var(--text-dark);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        textarea {
            font-family: var(--font-family);
            outline: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 左侧导航 (App Shell) ===== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            width: var(--sidebar-width);
            background: var(--bg-dark);
            color: var(--text-white);
            position: fixed;
            top: 0;
            left: 0;
            height: 100vh;
            display: flex;
            flex-direction: column;
            z-index: 1000;
            overflow-y: auto;
            transition: transform var(--transition);
        }

        .sidebar-brand {
            padding: 24px 20px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .sidebar-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            font-weight: 800;
            color: #fff;
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 0;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 20px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            border-left: 3px solid transparent;
            text-decoration: none;
        }

        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
        }

        .sidebar-nav .nav-item:hover {
            background: rgba(108, 99, 255, 0.12);
            color: var(--text-white);
            border-left-color: var(--primary);
        }

        .sidebar-nav .nav-item.active {
            background: rgba(108, 99, 255, 0.18);
            color: var(--text-white);
            border-left-color: var(--secondary);
        }

        .sidebar-nav .nav-item .badge-new {
            background: var(--secondary);
            color: #fff;
            font-size: 0.65rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            margin-left: auto;
            text-transform: uppercase;
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-topbar {
            display: none;
            background: var(--bg-dark);
            padding: 12px 20px;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 999;
        }

        .mobile-topbar .hamburger {
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.4rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        .mobile-topbar .mobile-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
        }

        .mobile-topbar .mobile-logo .logo-icon-sm {
            width: 28px;
            height: 28px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            font-weight: 800;
            color: #fff;
        }

        /* ===== 遮罩层 ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
        }

        .sidebar-overlay.active {
            display: block;
        }

        /* ===== 文章页内容 ===== */
        .article-page {
            padding: 40px 0 60px;
            flex: 1;
        }

        .article-container {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 面包屑 */
        .breadcrumbs {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            padding: 0;
            background: transparent;
            list-style: none;
        }

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

        .breadcrumbs li+li::before {
            content: "›";
            color: var(--text-muted);
            margin-right: 6px;
            font-size: 1.1rem;
        }

        .breadcrumbs a {
            color: var(--primary);
        }

        .breadcrumbs a:hover {
            color: var(--secondary);
        }

        .breadcrumbs .current {
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 文章头部 */
        .article-header {
            margin-bottom: 32px;
        }

        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

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

        .article-meta .meta-item i {
            font-size: 0.85rem;
            color: var(--primary);
        }

        .article-meta .category-tag {
            background: var(--secondary);
            color: #fff;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* 文章封面图 */
        .article-cover {
            margin-bottom: 32px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .article-cover img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }

        /* 正文阅读区 */
        .article-body {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text-dark);
        }

        .article-body p {
            margin-bottom: 1.2em;
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 1.8em 0 0.8em;
            color: var(--text-dark);
        }

        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin: 1.5em 0 0.6em;
            color: var(--text-dark);
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.2em 1.5em;
        }

        .article-body li {
            margin-bottom: 0.4em;
        }

        .article-body ul li {
            list-style: disc;
        }

        .article-body ol li {
            list-style: decimal;
        }

        .article-body img {
            border-radius: var(--radius-card);
            margin: 1.5em 0;
            box-shadow: var(--shadow-card);
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(108, 99, 255, 0.06);
            padding: 16px 20px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            color: var(--text-muted);
            font-style: italic;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-body a:hover {
            color: var(--secondary);
        }

        /* 内容未找到 */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .not-found-box i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 1.5rem;
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .not-found-box .btn-back {
            display: inline-block;
            padding: 10px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: background var(--transition);
        }

        .not-found-box .btn-back:hover {
            background: var(--primary-dark);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid var(--border-color);
        }

        .related-section h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--text-dark);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            cursor: pointer;
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .related-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }

        .related-card .card-body {
            padding: 16px 18px 18px;
        }

        .related-card .card-body h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-dark);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* ===== 返回按钮 ===== */
        .back-link-wrap {
            margin-top: 32px;
            text-align: center;
        }

        .back-link-wrap .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border: 2px solid var(--primary);
            color: var(--primary);
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: all var(--transition);
            background: transparent;
        }

        .back-link-wrap .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .site-footer .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .footer-brand .footer-logo .logo-icon-sm {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 800;
            color: #fff;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
        }

        .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }

        .footer-bottom .footer-links a:hover {
            color: var(--secondary);
        }

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

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                margin-left: 0;
            }
            .article-header h1 {
                font-size: 1.6rem;
            }
            .article-container {
                padding: 0 16px;
            }
            .article-body {
                font-size: 0.95rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-meta {
                gap: 10px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 520px) {
            .article-header h1 {
                font-size: 1.3rem;
            }
            .article-body {
                font-size: 0.9rem;
            }
            .breadcrumbs {
                font-size: 0.78rem;
            }
            .container {
                padding: 0 16px;
            }
            .article-page {
                padding: 24px 0 40px;
            }
            .related-section h3 {
                font-size: 1.2rem;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 0.5rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mt-3 {
            margin-top: 1.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6C63FF;
            --primary-dark: #5A52E0;
            --primary-light: #8B85FF;
            --accent: #00D4AA;
            --accent-dark: #00B894;
            --bg-main: #F9FAFB;
            --bg-dark: #1A1A2E;
            --bg-card: #FFFFFF;
            --text-dark: #1A1A2E;
            --text-body: #3D3D5C;
            --text-muted: #8E8EA0;
            --text-light: #F0F0F5;
            --border-light: #E8E8F0;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 18px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-lg: 0 8px 24px rgba(108,99,255,0.15);
            --shadow-xl: 0 12px 36px rgba(108,99,255,0.20);
            --nav-width: 240px;
            --font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-family);
            background: var(--bg-main);
            color: var(--text-body);
            line-height: 1.6;
            font-weight: 400;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; }
        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }
        p { margin-bottom: 1.2em; }
        small { font-size: 0.85rem; color: var(--text-muted); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section-block { padding: 60px 0; }
        .section-title { text-align: center; margin-bottom: 40px; }
        .section-title h2 { margin-bottom: 8px; }
        .section-title p { color: var(--text-muted); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }

        /* ===== Layout: Left Nav + Main Content ===== */
        .app-wrapper { display: flex; min-height: 100vh; }
        .sidebar {
            position: fixed; left: 0; top: 0; width: var(--nav-width); height: 100vh;
            background: var(--bg-dark); color: var(--text-light);
            display: flex; flex-direction: column; z-index: 1000;
            overflow-y: auto; padding: 24px 16px; transition: transform var(--transition);
        }
        .sidebar .logo-area {
            display: flex; align-items: center; gap: 10px;
            padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,0.08); margin-bottom: 20px;
        }
        .sidebar .logo-icon {
            width: 40px; height: 40px; background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center;
            font-weight: 700; font-size: 1rem; color: #fff; flex-shrink: 0;
        }
        .sidebar .logo-text { font-size: 1.15rem; font-weight: 700; color: #fff; letter-spacing: 0.5px; }
        .sidebar-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
        .sidebar-nav .nav-item {
            display: flex; align-items: center; gap: 12px;
            padding: 12px 16px; border-radius: var(--radius-md);
            color: rgba(255,255,255,0.7); font-size: 0.95rem; font-weight: 500;
            transition: all var(--transition); position: relative;
        }
        .sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 1.05rem; }
        .sidebar-nav .nav-item:hover {
            background: rgba(108,99,255,0.15); color: #fff; transform: translateX(4px);
        }
        .sidebar-nav .nav-item.active {
            background: rgba(108,99,255,0.20); color: var(--primary-light); font-weight: 600;
        }
        .sidebar-nav .nav-item.active::before {
            content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
            width: 3px; height: 20px; background: var(--primary); border-radius: 0 4px 4px 0;
        }
        .badge-new {
            background: var(--accent); color: #fff; font-size: 0.65rem; font-weight: 700;
            padding: 2px 8px; border-radius: 20px; margin-left: auto; text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .sidebar-footer {
            padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.75rem; color: rgba(255,255,255,0.3); text-align: center;
        }
        .main-content { margin-left: var(--nav-width); flex: 1; min-height: 100vh; }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none; position: sticky; top: 0; z-index: 999;
            background: var(--bg-dark); padding: 12px 20px;
            align-items: center; justify-content: space-between;
        }
        .mobile-header .logo-area { display: flex; align-items: center; gap: 10px; }
        .mobile-header .logo-icon {
            width: 34px; height: 34px; background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
            font-weight: 700; font-size: 0.85rem; color: #fff;
        }
        .mobile-header .logo-text { font-size: 1rem; font-weight: 700; color: #fff; }
        .hamburger {
            background: none; border: none; color: #fff; font-size: 1.5rem;
            cursor: pointer; padding: 4px 8px; border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .hamburger:hover { background: rgba(255,255,255,0.08); }
        .mobile-overlay {
            display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5);
            z-index: 999; opacity: 0; transition: opacity var(--transition);
        }
        .mobile-overlay.open { display: block; opacity: 1; }

        /* ===== Hero ===== */
        .hero-section {
            position: relative; background: var(--bg-dark); overflow: hidden;
            padding: 100px 40px; min-height: 520px;
            display: flex; align-items: center;
        }
        .hero-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25; z-index: 0;
        }
        .hero-section::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.92) 0%, rgba(108,99,255,0.30) 100%);
            z-index: 1;
        }
        .hero-content { position: relative; z-index: 2; max-width: 700px; color: #fff; }
        .hero-content h1 {
            font-size: 3rem; font-weight: 800; color: #fff; margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 span { background: linear-gradient(135deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-content p {
            font-size: 1.15rem; color: rgba(255,255,255,0.8); margin-bottom: 32px;
            max-width: 560px; line-height: 1.7;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 14px 32px; border-radius: var(--radius-md); font-weight: 600;
            font-size: 1rem; border: none; cursor: pointer; transition: all var(--transition);
            font-family: var(--font-family); text-decoration: none;
        }
        .btn-primary {
            background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(108,99,255,0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark); transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108,99,255,0.45); color: #fff;
        }
        .btn-outline {
            background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.4);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.10); border-color: #fff; transform: translateY(-2px); color: #fff;
        }
        .btn-accent {
            background: var(--accent); color: var(--bg-dark);
        }
        .btn-accent:hover {
            background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,212,170,0.35); color: var(--bg-dark);
        }

        /* ===== Features ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .feature-card {
            background: var(--bg-card); border-radius: var(--radius-lg);
            padding: 36px 28px; box-shadow: var(--shadow-md);
            transition: all var(--transition); border: 1px solid var(--border-light);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px); box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .feature-card .icon-wrap {
            width: 60px; height: 60px; border-radius: 50%;
            background: linear-gradient(135deg, rgba(108,99,255,0.10), rgba(0,212,170,0.10));
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 20px; font-size: 1.6rem; color: var(--primary);
        }
        .feature-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
        .feature-card p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== Game Categories ===== */
        .game-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .game-card {
            background: var(--bg-card); border-radius: var(--radius-lg);
            overflow: hidden; box-shadow: var(--shadow-sm);
            transition: all var(--transition); border: 1px solid var(--border-light);
            cursor: pointer;
        }
        .game-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .game-card .card-img {
            width: 100%; aspect-ratio: 4/3; object-fit: cover;
            border-radius: 0; display: block;
        }
        .game-card .card-body { padding: 20px; }
        .game-card .card-body h3 { font-size: 1.1rem; margin-bottom: 6px; }
        .game-card .card-body p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 12px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .game-tag {
            display: inline-block; background: var(--primary); color: #fff;
            font-size: 0.72rem; font-weight: 600; padding: 4px 12px; border-radius: 20px;
        }

        /* ===== Scenarios ===== */
        .scenarios-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .scenario-card {
            background: var(--bg-card); border-radius: var(--radius-lg);
            padding: 32px 24px; box-shadow: var(--shadow-md);
            transition: all var(--transition); border: 1px solid var(--border-light);
            text-align: center;
        }
        .scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .scenario-card .icon-lg {
            font-size: 2.4rem; color: var(--accent); margin-bottom: 16px;
        }
        .scenario-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .scenario-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== Steps / Flow ===== */
        .flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .flow-step {
            background: var(--bg-card); border-radius: var(--radius-lg);
            padding: 28px 20px; text-align: center; position: relative;
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .flow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .flow-step .step-num {
            width: 44px; height: 44px; border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff; font-weight: 700; font-size: 1.1rem;
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 16px;
        }
        .flow-step h3 { font-size: 1.05rem; margin-bottom: 6px; }
        .flow-step p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== Stats ===== */
        .stats-section { background: var(--bg-dark); color: #fff; }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
        .stat-item .stat-number {
            font-size: 2.8rem; font-weight: 800; background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
            line-height: 1.2;
        }
        .stat-item .stat-label { font-size: 0.95rem; color: rgba(255,255,255,0.7); margin-top: 8px; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card); border-radius: var(--radius-md);
            margin-bottom: 12px; border: 1px solid var(--border-light);
            overflow: hidden; transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 18px 24px; font-weight: 600; font-size: 1rem;
            display: flex; align-items: center; justify-content: space-between;
            cursor: pointer; color: var(--text-dark); background: none; border: none;
            width: 100%; text-align: left; font-family: var(--font-family);
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(108,99,255,0.04); }
        .faq-question i { transition: transform var(--transition); color: var(--primary); }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px; font-size: 0.92rem; color: var(--text-muted);
            line-height: 1.7; display: none;
        }
        .faq-answer.open { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #2D2B55 100%);
            text-align: center; padding: 80px 24px;
        }
        .cta-section h2 { color: #fff; font-size: 2.2rem; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.7); font-size: 1.05rem; margin-bottom: 32px; max-width: 500px; margin-left: auto; margin-right: auto; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 50px 0 30px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
        .footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
        .logo-icon-sm {
            width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
            font-weight: 700; font-size: 0.85rem; color: #fff; flex-shrink: 0;
        }
        .footer-logo span:last-child { font-size: 1.1rem; font-weight: 700; color: #fff; }
        .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.5); line-height: 1.7; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.88rem; transition: color var(--transition); }
        .footer-col ul li a:hover { color: var(--primary-light); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px;
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: rgba(255,255,255,0.4);
        }
        .footer-bottom .footer-links a { color: rgba(255,255,255,0.5); margin: 0 8px; font-size: 0.82rem; }
        .footer-bottom .footer-links a:hover { color: var(--primary-light); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .game-grid { grid-template-columns: repeat(2, 1fr); }
            .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
            .flow-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .sidebar { transform: translateX(-100%); }
            .sidebar.open { transform: translateX(0); }
            .mobile-header { display: flex; }
            .main-content { margin-left: 0; }
            .hero-section { padding: 60px 24px; min-height: 400px; }
            .hero-content h1 { font-size: 2rem; }
            .hero-content p { font-size: 1rem; }
            .features-grid { grid-template-columns: 1fr; }
            .game-grid { grid-template-columns: 1fr; }
            .scenarios-grid { grid-template-columns: 1fr; }
            .flow-grid { grid-template-columns: 1fr 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .section-block { padding: 40px 0; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            h3 { font-size: 1.25rem; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section { padding: 50px 20px; }
            .hero-actions .btn { padding: 12px 24px; font-size: 0.9rem; }
        }

        @media (max-width: 520px) {
            .hero-section { padding: 40px 16px; min-height: 320px; }
            .hero-content h1 { font-size: 1.6rem; }
            .flow-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .stat-item .stat-number { font-size: 2rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .container { padding: 0 16px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }
        .gap-8 { gap: 8px; }