/* roulang page: index */
:root {
            --bg-deep: #060a14;
            --bg-panel: #0d1322;
            --bg-card: #111827;
            --bg-elevated: #161d2e;
            --text-primary: #f0f2f5;
            --text-secondary: #b0b8c8;
            --text-weak: #6b7280;
            --accent-gold: #f0a500;
            --accent-gold-light: #fcc440;
            --accent-blue: #3b82f6;
            --accent-blue-glow: #5b9cf5;
            --accent-cyan: #06b6d4;
            --border-subtle: rgba(255,255,255,0.08);
            --border-hud: rgba(240,165,0,0.35);
            --border-blue: rgba(59,130,246,0.3);
            --shadow-card: 0 4px 24px rgba(0,0,0,0.5);
            --shadow-hud: 0 0 30px rgba(240,165,0,0.12), 0 0 8px rgba(240,165,0,0.06);
            --shadow-blue: 0 0 28px rgba(59,130,246,0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --gap-xs: 8px;
            --gap-sm: 14px;
            --gap-md: 24px;
            --gap-lg: 40px;
            --gap-xl: 60px;
            --gap-2xl: 80px;
            --font-xs: 0.78rem;
            --font-sm: 0.9rem;
            --font-base: 1rem;
            --font-md: 1.15rem;
            --font-lg: 1.4rem;
            --font-xl: 1.8rem;
            --font-2xl: 2.4rem;
            --font-3xl: 3.2rem;
            --font-hero: 3.8rem;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1280px;
            --nav-height: 64px;
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-deep);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* Container */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--gap-md);
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(6,10,20,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

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

        .header-left {
            display: flex;
            align-items: center;
            gap: var(--gap-lg);
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: var(--font-lg);
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

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

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-gold) 0%, #e08900 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.1rem;
            color: #0a0e1a;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(240,165,0,0.3);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: var(--font-sm);
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .nav-links a:hover {
            color: var(--text-primary);
            background: rgba(255,255,255,0.04);
        }

        .nav-links a.nav-active {
            color: var(--accent-gold);
            background: rgba(240,165,0,0.08);
            box-shadow: inset 0 0 0 1px rgba(240,165,0,0.2);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: var(--gap-sm);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 24px;
            font-size: var(--font-sm);
            font-weight: 700;
            color: #0a0e1a;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #d48900 100%);
            transition: all var(--transition-smooth);
            letter-spacing: 0.4px;
            box-shadow: 0 2px 14px rgba(240,165,0,0.25);
        }

        .btn-nav-cta:hover {
            box-shadow: 0 4px 22px rgba(240,165,0,0.45);
            transform: translateY(-1px);
            color: #0a0e1a;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 6px;
            line-height: 1;
            transition: color var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            color: var(--accent-gold);
        }

        /* Mobile nav drawer */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.7);
            z-index: 999;
        }

        .mobile-nav-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            height: 100%;
            background: var(--bg-panel);
            z-index: 1001;
            padding: var(--gap-lg) var(--gap-md);
            flex-direction: column;
            gap: var(--gap-md);
            border-left: 1px solid var(--border-subtle);
            box-shadow: -8px 0 30px rgba(0,0,0,0.6);
        }

        .mobile-nav-drawer .nav-links {
            flex-direction: column;
            gap: 4px;
        }

        .mobile-nav-drawer .nav-links a {
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: var(--font-base);
        }

        .mobile-nav-drawer .btn-nav-cta {
            width: 100%;
            justify-content: center;
            padding: 13px;
        }

        .mobile-nav-close {
            align-self: flex-end;
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 6px;
        }

        /* ============ HERO SECTION ============ */
        .hero-section {
            position: relative;
            display: flex;
            min-height: calc(100vh - var(--nav-height));
            overflow: hidden;
            background: var(--bg-deep);
        }

        .hero-left {
            flex: 1;
            display: flex;
            align-items: center;
            padding: var(--gap-2xl) var(--gap-xl);
            z-index: 2;
            position: relative;
        }

        .hero-left-inner {
            max-width: 620px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: var(--font-xs);
            font-weight: 700;
            color: var(--accent-gold);
            background: rgba(240,165,0,0.08);
            border: 1px solid rgba(240,165,0,0.2);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: var(--gap-md);
        }

        .hero-badge-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent-gold);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { box-shadow: 0 0 0 0 rgba(240,165,0,0.6); }
            50% { box-shadow: 0 0 0 10px rgba(240,165,0,0); }
        }

        .hero-title {
            font-size: var(--font-hero);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: var(--gap-md);
            color: var(--text-primary);
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 60%, #f59e0b 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline;
        }

        .hero-desc {
            font-size: var(--font-md);
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: var(--gap-lg);
            max-width: 500px;
        }

        .hero-buttons {
            display: flex;
            gap: var(--gap-sm);
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 28px;
            font-size: var(--font-base);
            font-weight: 700;
            color: #0a0e1a;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #c97e00 100%);
            transition: all var(--transition-smooth);
            letter-spacing: 0.5px;
            box-shadow: 0 4px 20px rgba(240,165,0,0.3);
        }

        .btn-primary:hover {
            box-shadow: 0 6px 30px rgba(240,165,0,0.5);
            transform: translateY(-2px);
            color: #0a0e1a;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 28px;
            font-size: var(--font-base);
            font-weight: 700;
            color: var(--text-primary);
            background: transparent;
            border: 1.5px solid rgba(255,255,255,0.25);
            transition: all var(--transition-smooth);
            letter-spacing: 0.5px;
        }

        .btn-secondary:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(240,165,0,0.06);
        }

        /* Hero Right - HUD Panel */
        .hero-right {
            flex: 0 0 44%;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
            min-height: 500px;
        }

        .hero-right::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6,10,20,0.55) 0%, rgba(6,10,20,0.8) 50%, rgba(6,10,20,0.95) 100%);
        }

        .hero-right::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(240,165,0,0.08) 0%, transparent 65%);
        }

        .hud-panel {
            position: relative;
            z-index: 3;
            background: rgba(13,19,34,0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-hud);
            border-radius: var(--radius-lg);
            padding: var(--gap-lg) var(--gap-md);
            box-shadow: var(--shadow-hud);
            min-width: 260px;
            max-width: 340px;
        }

        .hud-panel-title {
            font-size: var(--font-xs);
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--accent-gold);
            font-weight: 700;
            margin-bottom: var(--gap-md);
            text-align: center;
        }

        .hud-stat-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }

        .hud-stat-row:last-child {
            border-bottom: none;
        }

        .hud-stat-label {
            font-size: var(--font-xs);
            color: var(--text-weak);
            letter-spacing: 0.5px;
        }

        .hud-stat-value {
            font-size: var(--font-lg);
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: 1px;
            text-shadow: 0 0 12px rgba(6,182,212,0.4);
        }

        .hud-stat-value.gold {
            color: var(--accent-gold);
            text-shadow: 0 0 12px rgba(240,165,0,0.4);
        }

        /* ============ SECTION COMMONS ============ */
        .section {
            padding: var(--gap-2xl) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--gap-xl);
        }

        .section-tag {
            display: inline-block;
            font-size: var(--font-xs);
            font-weight: 700;
            letter-spacing: 1.5px;
            color: var(--accent-gold);
            text-transform: uppercase;
            margin-bottom: var(--gap-xs);
        }

        .section-title {
            font-size: var(--font-2xl);
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: var(--font-base);
            color: var(--text-secondary);
            margin-top: var(--gap-xs);
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ DATA METRICS STRIP ============ */
        .metrics-strip {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: var(--gap-lg) 0;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-md);
            text-align: center;
        }

        .metric-item {
            padding: var(--gap-md);
        }

        .metric-value {
            font-size: var(--font-3xl);
            font-weight: 900;
            letter-spacing: -1px;
            background: linear-gradient(180deg, var(--accent-gold) 0%, var(--accent-cyan) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
            margin-bottom: 8px;
        }

        .metric-label {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            letter-spacing: 0.5px;
        }

        /* ============ CATEGORY CARDS ============ */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap-md);
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }

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

        .category-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .category-card-body {
            padding: var(--gap-md);
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: var(--gap-xs);
        }

        .category-card-tag {
            font-size: var(--font-xs);
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: 1px;
        }

        .category-card-title {
            font-size: var(--font-lg);
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .category-card-desc {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: var(--font-sm);
            font-weight: 700;
            color: var(--accent-blue);
            margin-top: auto;
            transition: gap var(--transition-fast);
        }

        .category-card-link:hover {
            gap: 12px;
            color: var(--accent-blue-glow);
        }

        /* ============ CMS LIST SECTION ============ */
        .cms-list-section {
            background: var(--bg-panel);
        }

        .cms-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap-md);
        }

        .cms-list-card {
            display: flex;
            gap: var(--gap-md);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--gap-md);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }

        .cms-list-card:hover {
            border-color: var(--border-blue);
            box-shadow: var(--shadow-blue);
            transform: translateY(-2px);
        }

        .cms-list-thumb {
            flex: 0 0 140px;
            height: 100px;
            border-radius: var(--radius-sm);
            object-fit: cover;
        }

        .cms-list-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
            min-width: 0;
        }

        .cms-list-cat {
            font-size: var(--font-xs);
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: 0.5px;
        }

        .cms-list-title {
            font-size: var(--font-base);
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-list-title a {
            transition: color var(--transition-fast);
        }

        .cms-list-title a:hover {
            color: var(--accent-gold);
        }

        .cms-list-excerpt {
            font-size: var(--font-xs);
            color: var(--text-weak);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-list-meta {
            font-size: var(--font-xs);
            color: var(--text-weak);
            margin-top: auto;
        }

        .cms-empty {
            text-align: center;
            padding: var(--gap-2xl);
            color: var(--text-weak);
            font-size: var(--font-base);
        }

        /* ============ FEATURE CONTRAST PANELS ============ */
        .feature-contrast-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap-md);
        }

        .feature-panel {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--gap-lg);
            border: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .feature-panel:hover {
            border-color: var(--border-hud);
            box-shadow: var(--shadow-hud);
        }

        .feature-panel.accent-blue:hover {
            border-color: var(--border-blue);
            box-shadow: var(--shadow-blue);
        }

        .feature-panel-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: var(--gap-sm);
            background: rgba(240,165,0,0.1);
            color: var(--accent-gold);
        }

        .feature-panel.accent-blue .feature-panel-icon {
            background: rgba(59,130,246,0.1);
            color: var(--accent-blue);
        }

        .feature-panel-title {
            font-size: var(--font-lg);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--gap-xs);
        }

        .feature-panel-desc {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .feature-panel-list {
            list-style: none;
            margin-top: var(--gap-sm);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .feature-panel-list li {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            padding-left: 20px;
            position: relative;
        }

        .feature-panel-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-gold);
        }

        .feature-panel.accent-blue .feature-panel-list li::before {
            background: var(--accent-blue);
        }

        /* ============ PROCESS / PATH ============ */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-md);
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-blue), var(--accent-cyan), var(--accent-gold));
            z-index: 0;
            opacity: 0.5;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-step-num {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--border-hud);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: var(--font-xl);
            font-weight: 900;
            color: var(--accent-gold);
            margin: 0 auto var(--gap-sm);
            transition: all var(--transition-smooth);
            position: relative;
            z-index: 1;
        }

        .process-step:hover .process-step-num {
            box-shadow: var(--shadow-hud);
            border-color: var(--accent-gold);
        }

        .process-step-label {
            font-size: var(--font-sm);
            font-weight: 700;
            color: var(--text-primary);
        }

        .process-step-desc {
            font-size: var(--font-xs);
            color: var(--text-weak);
            margin-top: 4px;
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--bg-panel);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--gap-sm);
        }

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

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

        .faq-question {
            width: 100%;
            text-align: left;
            padding: var(--gap-md);
            font-size: var(--font-base);
            font-weight: 700;
            color: var(--text-primary);
            background: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--gap-sm);
            transition: color var(--transition-fast);
        }

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

        .faq-arrow {
            flex-shrink: 0;
            transition: transform var(--transition-fast);
            color: var(--text-weak);
            font-size: 1.2rem;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 var(--gap-md);
            font-size: var(--font-sm);
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--gap-md) var(--gap-md);
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-panel) 100%);
        }

        .cta-card {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: var(--gap-2xl) var(--gap-xl);
            text-align: center;
            border: 1px solid var(--border-hud);
            box-shadow: var(--shadow-hud);
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -20%;
            width: 140%;
            height: 180%;
            background: radial-gradient(ellipse at center, rgba(240,165,0,0.06) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-card-title {
            font-size: var(--font-2xl);
            font-weight: 900;
            color: var(--text-primary);
            margin-bottom: var(--gap-sm);
            position: relative;
        }

        .cta-card-desc {
            font-size: var(--font-md);
            color: var(--text-secondary);
            margin-bottom: var(--gap-lg);
            position: relative;
        }

        .cta-card .btn-primary {
            font-size: var(--font-md);
            padding: 16px 36px;
            position: relative;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-subtle);
            padding: var(--gap-xl) 0 var(--gap-lg);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--gap-lg);
            margin-bottom: var(--gap-lg);
        }

        .footer-brand-name {
            font-size: var(--font-lg);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--gap-xs);
        }

        .footer-brand-desc {
            font-size: var(--font-sm);
            color: var(--text-weak);
            line-height: 1.6;
        }

        .footer-col-title {
            font-size: var(--font-sm);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--gap-sm);
            letter-spacing: 0.5px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: var(--font-sm);
            color: var(--text-weak);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--accent-gold);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: var(--gap-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--gap-sm);
            font-size: var(--font-xs);
            color: var(--text-weak);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            :root {
                --font-hero: 2.6rem;
                --font-3xl: 2.4rem;
                --font-2xl: 1.8rem;
                --gap-2xl: 60px;
            }

            .hero-section {
                flex-direction: column;
                min-height: auto;
            }

            .hero-left {
                padding: var(--gap-xl) var(--gap-md);
                order: 1;
            }

            .hero-right {
                flex: 0 0 auto;
                min-height: 350px;
                order: 0;
            }

            .hero-left-inner {
                max-width: 100%;
            }

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

            .cms-list-grid {
                grid-template-columns: 1fr;
            }

            .feature-contrast-grid {
                grid-template-columns: 1fr;
            }

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

            .process-steps::before {
                display: none;
            }

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

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

            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 12px;
                font-size: var(--font-xs);
            }
        }

        @media (max-width: 768px) {
            :root {
                --font-hero: 2rem;
                --font-3xl: 1.8rem;
                --font-2xl: 1.5rem;
                --font-xl: 1.3rem;
                --gap-2xl: 48px;
                --gap-xl: 36px;
                --nav-height: 56px;
            }

            .container {
                padding: 0 var(--gap-sm);
            }

            .header-inner {
                padding: 0 var(--gap-sm);
            }

            .nav-links {
                display: none;
            }

            .header-right .btn-nav-cta {
                display: none;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .hero-left {
                padding: var(--gap-lg) var(--gap-sm);
            }

            .hero-right {
                min-height: 260px;
            }

            .hero-title {
                font-size: var(--font-2xl);
            }

            .hero-desc {
                font-size: var(--font-sm);
            }

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

            .hero-buttons .btn-primary,
            .hero-buttons .btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .hud-panel {
                max-width: 260px;
                padding: var(--gap-md);
            }

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

            .cms-list-card {
                flex-direction: column;
            }

            .cms-list-thumb {
                flex: 0 0 auto;
                width: 100%;
                height: 160px;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--gap-sm);
            }

            .process-steps {
                grid-template-columns: 1fr 1fr;
            }

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

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

            .section {
                padding: var(--gap-xl) 0;
            }

            .section-title {
                font-size: var(--font-xl);
            }

            .cta-card {
                padding: var(--gap-xl) var(--gap-md);
            }

            .cta-card-title {
                font-size: var(--font-xl);
            }
        }

        @media (max-width: 520px) {
            :root {
                --font-hero: 1.7rem;
                --font-2xl: 1.35rem;
                --font-xl: 1.15rem;
                --font-lg: 1.05rem;
                --gap-2xl: 36px;
                --gap-xl: 28px;
                --gap-lg: 20px;
                --gap-md: 16px;
            }

            .hero-right {
                min-height: 200px;
            }

            .hero-title {
                letter-spacing: 0;
            }

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--gap-xs);
            }

            .metric-value {
                font-size: 1.6rem;
            }

            .process-steps {
                grid-template-columns: 1fr;
            }

            .process-step-num {
                width: 56px;
                height: 56px;
                font-size: 1.2rem;
            }

            .category-card-img {
                height: 150px;
            }

            .btn-primary, .btn-secondary {
                padding: 12px 20px;
                font-size: var(--font-sm);
            }

            .logo-link {
                font-size: var(--font-base);
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
        }

        /* Mobile nav states */
        @media (max-width: 768px) {
            .mobile-nav-overlay.active {
                display: block;
            }
            .mobile-nav-drawer.active {
                display: flex;
            }
        }

/* roulang page: article */
:root {
            --primary: #E9453A;
            --primary-dark: #C0392B;
            --primary-light: #FF6B5E;
            --accent: #F0A500;
            --accent-glow: #FFC940;
            --bg-dark: #0D0D1A;
            --bg-panel: #141428;
            --bg-card: #1A1A30;
            --bg-body: #F8F9FB;
            --bg-white: #FFFFFF;
            --text-primary: #1A1A2E;
            --text-body: #3A3A52;
            --text-muted: #6B6B85;
            --text-light: #9CA3B8;
            --text-on-dark: #E8E8F0;
            --border-subtle: #E2E4EA;
            --border-card: #EAECF2;
            --border-hud: #2A2A48;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 14px 40px rgba(0, 0, 0, 0.14);
            --shadow-hud: 0 8px 32px rgba(233, 69, 58, 0.18);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 26px;
            --radius-sharp: 4px;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-display: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1260px;
            --nav-height: 64px;
            --section-gap: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            min-height: 100vh;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            outline: none;
        }

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-subtle);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.92);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

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

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

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

        .header-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: 0 3px 12px rgba(233, 69, 58, 0.3);
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 6px;
            align-items: center;
        }

        .nav-links li a {
            display: inline-block;
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-body);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-links li a:hover {
            color: var(--primary);
            background: rgba(233, 69, 58, 0.05);
        }

        .nav-links li a.nav-active {
            color: var(--primary);
            background: rgba(233, 69, 58, 0.08);
            font-weight: 700;
        }

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

        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: none;
            border: none;
            z-index: 110;
        }

        .mobile-menu-btn span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 3px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Article Header Banner */
        .article-banner {
            background: linear-gradient(160deg, var(--bg-dark) 0%, #1A1030 40%, #1A1A30 100%);
            position: relative;
            overflow: hidden;
            padding: 56px 0 48px;
            color: var(--text-on-dark);
        }

        .article-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(233, 69, 58, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(240, 165, 0, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .article-banner .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            gap: 8px;
            align-items: center;
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--accent-glow);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: rgba(255, 255, 255, 0.7);
        }

        .article-banner-meta {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .article-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(233, 69, 58, 0.25);
            color: #FF8A80;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            border: 1px solid rgba(233, 69, 58, 0.35);
        }

        .article-date-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            color: var(--text-light);
            font-size: 0.85rem;
            font-weight: 500;
        }

        .article-banner h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.35;
            color: #fff;
            letter-spacing: -0.02em;
            max-width: 800px;
        }

        /* Main Layout */
        .article-main {
            padding: 48px 0 var(--section-gap);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 44px;
            align-items: start;
        }

        /* Article Content */
        .article-content-area {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            min-height: 400px;
        }

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

        .article-content-area .article-featured-image img {
            width: 100%;
            object-fit: cover;
            max-height: 460px;
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }

        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-subtle);
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 28px 0 12px;
        }

        .article-body p {
            margin-bottom: 18px;
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0;
            padding-left: 24px;
        }

        .article-body li {
            margin-bottom: 8px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(233, 69, 58, 0.04);
            padding: 18px 22px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-body);
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body strong {
            color: var(--text-primary);
            font-weight: 700;
        }

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

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            color: var(--text-muted);
        }

        .article-not-found .not-found-icon {
            font-size: 4rem;
            margin-bottom: 20px;
            opacity: 0.5;
        }

        .article-not-found h2 {
            font-size: 1.6rem;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .article-not-found p {
            margin-bottom: 24px;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 14px rgba(233, 69, 58, 0.3);
        }

        .btn-back-home:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(233, 69, 58, 0.4);
            color: #fff;
        }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-panel {
            background: var(--bg-panel);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-hud);
            box-shadow: var(--shadow-hud);
            color: var(--text-on-dark);
        }

        .sidebar-panel-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.02em;
        }

        .sidebar-panel-title::before {
            content: '';
            width: 4px;
            height: 18px;
            background: var(--primary);
            border-radius: 2px;
            flex-shrink: 0;
        }

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

        .stat-item {
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-sm);
            padding: 14px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .stat-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-glow);
            line-height: 1;
        }

        .stat-label {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-top: 4px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .sidebar-post-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sidebar-post-list li a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            color: var(--text-on-dark);
            font-size: 0.9rem;
            line-height: 1.4;
            border: 1px solid transparent;
        }

        .sidebar-post-list li a:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .sidebar-post-list .sp-index {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            background: rgba(233, 69, 58, 0.3);
            color: #FF8A80;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.78rem;
        }

        .sidebar-post-list li:nth-child(1) .sp-index {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 0 12px rgba(233, 69, 58, 0.5);
        }

        .sidebar-post-list li:nth-child(2) .sp-index {
            background: rgba(240, 165, 0, 0.5);
            color: #FFC940;
        }

        .sidebar-post-list li:nth-child(3) .sp-index {
            background: rgba(233, 69, 58, 0.2);
            color: #FF8A80;
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sidebar-tag {
            display: inline-block;
            padding: 5px 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            font-size: 0.78rem;
            color: var(--text-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .sidebar-tag:hover {
            background: rgba(233, 69, 58, 0.2);
            border-color: rgba(233, 69, 58, 0.4);
            color: #fff;
        }

        /* Related Posts */
        .related-section {
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid var(--border-subtle);
        }

        .related-section .section-label {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-section .section-label::before {
            content: '';
            width: 5px;
            height: 24px;
            background: var(--primary);
            border-radius: 3px;
        }

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

        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-card);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(233, 69, 58, 0.2);
        }

        .related-card-image {
            height: 180px;
            overflow: hidden;
            position: relative;
            background: var(--bg-dark);
        }

        .related-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .related-card:hover .related-card-image img {
            transform: scale(1.06);
        }

        .related-card-body {
            padding: 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card-category {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 8px;
        }

        .related-card-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: auto;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(150deg, var(--bg-dark) 0%, #1A1030 50%, #1A1A30 100%);
            padding: 56px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(233, 69, 58, 0.2) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h3 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            color: var(--text-light);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            box-shadow: 0 6px 22px rgba(233, 69, 58, 0.4);
            letter-spacing: 0.02em;
        }

        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(233, 69, 58, 0.55);
            color: #fff;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-on-dark);
            padding: 52px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .footer-brand-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        .footer-col-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links li a {
            color: var(--text-light);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
            padding: 2px 0;
        }

        .footer-links li a:hover {
            color: var(--accent-glow);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.84rem;
            color: var(--text-light);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr 280px;
                gap: 28px;
            }

            .article-content-area {
                padding: 28px 24px;
            }

            .article-content-area .article-featured-image {
                margin: -28px -24px 24px;
            }

            .article-banner h1 {
                font-size: 1.7rem;
            }

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

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

        @media (max-width: 768px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .article-sidebar {
                order: 2;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }

            .sidebar-panel {
                flex: 1 1 100%;
                min-width: 0;
            }

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

            .article-banner h1 {
                font-size: 1.45rem;
            }

            .article-content-area {
                padding: 24px 18px;
            }

            .article-content-area .article-featured-image {
                margin: -24px -18px 20px;
            }

            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 22px;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--bg-white);
                flex-direction: column;
                padding: 80px 28px 40px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                transition: right var(--transition-smooth);
                z-index: 105;
            }

            .nav-links.open {
                right: 0;
            }

            .nav-links li a {
                display: block;
                padding: 14px 16px;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
                width: 100%;
            }

            .nav-links li a.nav-active::after {
                display: none;
            }

            .mobile-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.5);
                z-index: 100;
            }

            .mobile-overlay.show {
                display: block;
            }

            .header-inner {
                position: relative;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .article-banner {
                padding: 36px 0 32px;
            }

            .article-banner h1 {
                font-size: 1.25rem;
            }

            .article-content-area {
                padding: 18px 14px;
                border-radius: var(--radius-md);
            }

            .article-content-area .article-featured-image {
                margin: -18px -14px 16px;
                border-radius: var(--radius-md) var(--radius-md) 0 0;
            }

            .article-body {
                font-size: 0.98rem;
            }

            .article-body h2 {
                font-size: 1.3rem;
            }

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

            .related-card-image {
                height: 160px;
            }

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

            .cta-section h3 {
                font-size: 1.4rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }

            .breadcrumb {
                font-size: 0.78rem;
            }

            .article-banner-meta {
                gap: 10px;
            }

            .site-header {
                height: 56px;
            }

            :root {
                --section-gap: 48px;
                --nav-height: 56px;
            }
        }

        @media (min-width: 769px) {
            .mobile-overlay {
                display: none !important;
            }

            .nav-links {
                position: static;
                width: auto;
                height: auto;
                background: transparent;
                flex-direction: row;
                padding: 0;
                box-shadow: none;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #08090f;
            --bg-panel: #12142a;
            --bg-card: #151832;
            --bg-hover: #1c2040;
            --border-default: #1e2252;
            --border-glow: #00d4ff33;
            --text-primary: #e0e2f0;
            --text-secondary: #b0b6d4;
            --text-muted: #7a80a8;
            --accent-cyan: #00d4ff;
            --accent-purple: #b347ea;
            --accent-gold: #f0a500;
            --accent-green: #00e676;
            --accent-red: #ff3d5a;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), 0 1px 0 rgba(255, 255, 255, 0.03) inset;
            --shadow-glow-cyan: 0 0 20px rgba(0, 212, 255, 0.2), 0 0 60px rgba(0, 212, 255, 0.06);
            --shadow-glow-purple: 0 0 20px rgba(179, 71, 234, 0.2), 0 0 60px rgba(179, 71, 234, 0.06);
            --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.55);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            font-size: 15px;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-cyan);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        input {
            font-family: inherit;
            outline: none;
        }
        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-default);
            transition: all var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
            border-bottom-color: var(--border-glow);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 20px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .header-logo:hover {
            color: var(--accent-cyan);
        }
        .header-logo .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links li a {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: var(--text-primary);
            background: var(--bg-hover);
        }
        .nav-links li a.nav-active {
            color: #fff;
            background: rgba(0, 212, 255, 0.12);
            font-weight: 600;
            box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.25);
        }
        .nav-links li a.nav-active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent-cyan);
            box-shadow: 0 0 10px var(--accent-cyan);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            line-height: 1;
        }
        .mobile-menu-btn:hover {
            background: var(--bg-hover);
            color: var(--accent-cyan);
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(12, 14, 28, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 12px 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border-default);
                box-shadow: var(--shadow-elevated);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-smooth);
                z-index: 99;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links li a {
                display: block;
                width: 100%;
                text-align: center;
                padding: 12px 18px;
                border-radius: var(--radius-md);
                font-size: 1rem;
            }
            .mobile-menu-btn {
                display: block;
            }
        }

        /* ========== HERO (分类页精简版) ========== */
        .category-hero {
            position: relative;
            padding: 60px 0 50px;
            background: linear-gradient(180deg, #0c1022 0%, #08090f 100%);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(179, 71, 234, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 40px;
        }
        .category-hero .hero-text {
            flex: 1;
            min-width: 0;
        }
        .category-hero .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(0, 212, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 212, 255, 0.25);
            margin-bottom: 16px;
        }
        .category-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .category-hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 540px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .category-hero .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .category-hero .hero-stat {
            text-align: left;
        }
        .category-hero .hero-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
        }
        .category-hero .hero-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .category-hero .hero-visual {
            flex-shrink: 0;
            width: 280px;
            height: 280px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-glow-cyan);
            border: 1px solid var(--border-default);
        }
        .category-hero .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .category-hero .hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(8, 9, 15, 0.7) 100%);
            pointer-events: none;
        }
        @media (max-width: 768px) {
            .category-hero {
                padding: 36px 0 32px;
            }
            .category-hero .hero-content {
                flex-direction: column-reverse;
                gap: 24px;
                text-align: center;
            }
            .category-hero .hero-visual {
                width: 200px;
                height: 200px;
                border-radius: var(--radius-lg);
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-desc {
                font-size: 0.95rem;
                max-width: 100%;
            }
            .category-hero .hero-stats {
                justify-content: center;
                gap: 20px;
            }
            .category-hero .hero-stat .stat-num {
                font-size: 1.5rem;
            }
        }

        /* ========== SECTION COMMONS ========== */
        .section {
            padding: 60px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header .section-badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 16px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            background: rgba(179, 71, 234, 0.1);
            color: var(--accent-purple);
            border: 1px solid rgba(179, 71, 234, 0.2);
            margin-bottom: 10px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            margin-bottom: 8px;
        }
        .section-header .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 500px;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .section {
                padding: 36px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== FILTER / TOPIC TABS ========== */
        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
            margin-bottom: 36px;
        }
        .filter-tab {
            padding: 9px 20px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .filter-tab:hover {
            color: var(--text-primary);
            background: var(--bg-hover);
            border-color: rgba(0, 212, 255, 0.3);
        }
        .filter-tab.active {
            color: #fff;
            background: rgba(0, 212, 255, 0.12);
            border-color: rgba(0, 212, 255, 0.4);
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.12);
            font-weight: 600;
        }

        /* ========== CARD GRID ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 22px;
        }
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            border-color: rgba(0, 212, 255, 0.35);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-3px);
        }
        .guide-card .card-img-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: var(--bg-panel);
        }
        .guide-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .guide-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .guide-card .card-img-wrap .card-difficulty {
            position: absolute;
            top: 12px;
            right: 12px;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .difficulty-easy {
            background: rgba(0, 230, 118, 0.18);
            color: #00e676;
            border: 1px solid rgba(0, 230, 118, 0.3);
        }
        .difficulty-medium {
            background: rgba(240, 165, 0, 0.18);
            color: #f0a500;
            border: 1px solid rgba(240, 165, 0, 0.3);
        }
        .difficulty-hard {
            background: rgba(255, 61, 90, 0.18);
            color: #ff3d5a;
            border: 1px solid rgba(255, 61, 90, 0.3);
        }
        .guide-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .guide-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .guide-card .card-tag {
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 0.73rem;
            font-weight: 500;
            background: rgba(179, 71, 234, 0.08);
            color: var(--accent-purple);
            border: 1px solid rgba(179, 71, 234, 0.15);
            letter-spacing: 0.02em;
        }
        .guide-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }
        .guide-card .card-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: auto;
            padding-top: 8px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .guide-card .card-meta .meta-stat {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .guide-card .card-meta .meta-stat i {
            font-size: 0.7rem;
            color: var(--accent-cyan);
        }

        /* ========== RANKING PANEL ========== */
        .ranking-panel {
            background: var(--bg-panel);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-xl);
            padding: 28px 30px;
            box-shadow: var(--shadow-card);
        }
        .ranking-panel h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .ranking-panel h3 i {
            color: var(--accent-gold);
        }
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 14px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .ranking-item:hover {
            background: var(--bg-hover);
        }
        .ranking-item .rank-num {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.85rem;
            flex-shrink: 0;
            font-family: var(--font-mono);
        }
        .rank-1 {
            background: linear-gradient(135deg, #f0a500, #e68900);
            color: #000;
        }
        .rank-2 {
            background: linear-gradient(135deg, #c0c0c0, #9a9a9a);
            color: #000;
        }
        .rank-3 {
            background: linear-gradient(135deg, #cd7f32, #a0622e);
            color: #fff;
        }
        .rank-other {
            background: var(--bg-card);
            color: var(--text-muted);
        }
        .ranking-item .rank-info {
            flex: 1;
            min-width: 0;
        }
        .ranking-item .rank-title {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.9rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .ranking-item .rank-views {
            font-size: 0.73rem;
            color: var(--text-muted);
        }
        .ranking-item .rank-arrow {
            color: var(--accent-green);
            font-size: 0.8rem;
        }

        /* ========== PATH / FLOW SECTION ========== */
        .path-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            position: relative;
        }
        @media (max-width: 768px) {
            .path-flow {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }
        @media (max-width: 520px) {
            .path-flow {
                grid-template-columns: 1fr;
            }
        }
        .path-step {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
        }
        .path-step:hover {
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .path-step .step-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            margin: 0 auto 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            background: rgba(0, 212, 255, 0.08);
            color: var(--accent-cyan);
            border: 2px solid rgba(0, 212, 255, 0.2);
        }
        .path-step .step-num {
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--accent-cyan);
            margin-bottom: 6px;
        }
        .path-step .step-title {
            font-weight: 700;
            color: #fff;
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .path-step .step-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== COMPARISON PANEL ========== */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        @media (max-width: 768px) {
            .comparison-grid {
                grid-template-columns: 1fr;
            }
        }
        .comparison-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-smooth);
        }
        .comparison-card:hover {
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: var(--shadow-card);
        }
        .comparison-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comparison-card h4 .comp-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
        }
        .comp-beginner .comp-icon {
            background: rgba(0, 230, 118, 0.15);
            color: var(--accent-green);
        }
        .comp-pro .comp-icon {
            background: rgba(255, 61, 90, 0.15);
            color: var(--accent-red);
        }
        .comparison-card ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .comparison-card ul li {
            font-size: 0.85rem;
            color: var(--text-secondary);
            padding-left: 18px;
            position: relative;
            line-height: 1.5;
        }
        .comparison-card ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 7px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
        }
        .comp-beginner ul li::before {
            background: var(--accent-green);
            box-shadow: 0 0 6px rgba(0, 230, 118, 0.4);
        }
        .comp-pro ul li::before {
            background: var(--accent-red);
            box-shadow: 0 0 6px rgba(255, 61, 90, 0.4);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.25);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 16px 20px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: all var(--transition-fast);
            line-height: 1.5;
        }
        .faq-question:hover {
            color: #fff;
        }
        .faq-question i {
            font-size: 0.75rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 260px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-default);
            border-bottom: 1px solid var(--border-default);
        }
        .cta-inner {
            text-align: center;
            padding: 50px 20px;
        }
        .cta-inner h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-inner p {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 26px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            cursor: pointer;
            text-align: center;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), #0098cc);
            color: #000;
            border: none;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
        }
        .btn-primary:hover {
            box-shadow: 0 6px 30px rgba(0, 212, 255, 0.45);
            transform: translateY(-2px);
            color: #000;
        }
        .btn-outline {
            background: transparent;
            color: var(--accent-cyan);
            border: 2px solid rgba(0, 212, 255, 0.4);
        }
        .btn-outline:hover {
            background: rgba(0, 212, 255, 0.06);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 1rem;
            border-radius: 28px;
        }

        /* ========== PAGINATION ========== */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .page-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .page-btn:hover {
            background: var(--bg-hover);
            color: #fff;
            border-color: rgba(0, 212, 255, 0.3);
        }
        .page-btn.active {
            background: rgba(0, 212, 255, 0.12);
            color: #fff;
            border-color: rgba(0, 212, 255, 0.4);
            font-weight: 700;
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.15);
        }
        .page-btn.disabled {
            opacity: 0.35;
            pointer-events: none;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-default);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            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;
                gap: 20px;
            }
        }
        .footer-brand-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .footer-brand-desc {
            font-size: 0.83rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 7px;
        }
        .footer-links li a {
            font-size: 0.83rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-links li a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        @media (max-width: 520px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== SCROLLBAR ========== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-primary);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-default);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #2a2f55;
        }

        /* ========== UTILITY ANIMATIONS ========== */
        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 10px rgba(0, 212, 255, 0.15);
            }
            50% {
                box-shadow: 0 0 24px rgba(0, 212, 255, 0.35);
            }
        }
        .animate-pulse-glow {
            animation: pulse-glow 2.5s ease-in-out infinite;
        }

@media (max-width: 768px) {
                    .section[style*="grid-template-columns"] > .container > div {
                        grid-template-columns: 1fr !important;
                    }
                    .comparison-grid {
                        grid-template-columns: 1fr !important;
                    }
                }