/* roulang page: index */
:root {
            --color-bg-dark: #0E1114;
            --color-bg-deep: #151A1F;
            --color-bg-panel: #1A2026;
            --color-bg-light: #F5F6F8;
            --color-accent-cyan: #1FE5A8;
            --color-accent-purple: #7B5CF0;
            --color-accent-orange: #FFB547;
            --color-text-light: #F5F7FA;
            --color-text-dark: #171A1E;
            --color-text-muted: #9BA5AE;
            --color-text-muted-dark: #5C656E;
            --color-border-dark: #263038;
            --color-border-light: #E2E6EA;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-dark: 0 8px 24px rgba(0,0,0,0.15);
            --shadow-dark-hover: 0 16px 40px rgba(0,0,0,0.35);
            --shadow-light: 0 4px 16px rgba(0,0,0,0.06);
            --shadow-light-hover: 0 8px 24px rgba(0,0,0,0.12);
            --font-sans: 'PingFang SC','Noto Sans SC','Microsoft YaHei','Source Han Sans SC','Helvetica Neue',system-ui,-apple-system,sans-serif;
            --font-mono: 'SF Mono','JetBrains Mono','Roboto Mono','Consolas',monospace;
            --transition-fast: 0.2s cubic-bezier(0.4,0,0.2,1);
            --transition-base: 0.35s cubic-bezier(0.4,0,0.2,1);
            --transition-slow: 0.6s cubic-bezier(0.16,1,0.3,1);
            --container-max: 1200px;
            --nav-height: 64px;
        }

        *, *::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(--color-text-dark);
            background-color: var(--color-bg-light);
            overflow-x: hidden;
        }

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

        a:hover, a:focus {
            color: var(--color-accent-cyan);
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent-cyan);
            outline-offset: 2px;
        }

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

        button, input, select, textarea {
            font-family: var(--font-sans);
            font-size: inherit;
        }

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

        @media (max-width: 1023px) {
            .container { padding: 0 20px; }
        }
        @media (max-width: 639px) {
            .container { padding: 0 16px; }
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--nav-height);
            background: rgba(14, 17, 20, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(14, 17, 20, 0.97);
            border-bottom-color: rgba(31, 229, 168, 0.2);
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 32px;
            min-width: 0;
        }

        .nav-logo {
            font-size: 20px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #fff;
            font-weight: 700;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu li a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-menu li a:hover,
        .nav-menu li a:focus {
            color: var(--color-text-light);
            background: rgba(255,255,255,0.06);
        }

        .nav-menu li a.active {
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.08);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-search-btn {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid var(--color-border-dark);
            color: var(--color-text-muted);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .nav-search-btn:hover {
            color: var(--color-accent-cyan);
            border-color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.06);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--color-accent-orange);
            color: #1a1a1a;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            background: #ffc56e;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255,181,71,0.3);
            color: #1a1a1a;
        }

        .nav-cta-btn i {
            font-size: 12px;
            transition: transform var(--transition-fast);
        }
        .nav-cta-btn:hover i {
            transform: translateX(3px);
        }

        .nav-hamburger {
            display: none;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: transparent;
            color: var(--color-text-light);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 4px;
            padding: 0;
            transition: all var(--transition-fast);
        }

        .nav-hamburger span {
            display: block;
            width: 16px;
            height: 2px;
            background: currentColor;
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        .nav-hamburger:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 99;
            background: var(--color-bg-dark);
            padding: 24px 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
            border-top: 1px solid var(--color-border-dark);
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer a {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-light);
            border-radius: var(--radius-sm);
            background: var(--color-bg-panel);
            transition: all var(--transition-fast);
        }

        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            background: rgba(31,229,168,0.08);
            color: var(--color-accent-cyan);
        }

        .mobile-drawer .mobile-cta {
            margin-top: 12px;
            background: var(--color-accent-orange);
            color: #1a1a1a;
            text-align: center;
            font-weight: 700;
        }
        .mobile-drawer .mobile-cta:hover {
            background: #ffc56e;
            color: #1a1a1a;
        }

        @media (max-width: 1023px) {
            .nav-menu { display: none; }
            .nav-hamburger { display: inline-flex; }
            .nav-cta-btn { display: none; }
            .nav-search-btn { display: none; }
        }

        @media (max-width: 639px) {
            .nav-wrapper { padding: 0 16px; }
            .nav-logo { font-size: 18px; }
        }

        /* ============ HERO ============ */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: var(--color-bg-dark);
            padding-top: var(--nav-height);
            overflow: hidden;
        }

        .hero-bg-img {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 1;
            pointer-events: none;
        }

        .hero-glow {
            position: absolute;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            filter: blur(120px);
            opacity: 0.25;
            pointer-events: none;
            z-index: 1;
        }

        .hero-glow.g1 {
            top: -200px;
            right: -200px;
            background: var(--color-accent-purple);
        }
        .hero-glow.g2 {
            bottom: -250px;
            left: -250px;
            background: var(--color-accent-cyan);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 64px 0 80px;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-text {
            max-width: 560px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.08);
            border: 1px solid rgba(31,229,168,0.2);
            border-radius: var(--radius-full);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .hero-badge i {
            font-size: 11px;
        }

        .hero-title {
            font-size: 52px;
            font-weight: 900;
            letter-spacing: -0.03em;
            color: var(--color-text-light);
            line-height: 1.2;
            margin-bottom: 20px;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 28px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn i {
            transition: transform var(--transition-fast);
        }

        .btn-primary {
            background: var(--color-accent-orange);
            color: #1a1a1a;
        }
        .btn-primary:hover {
            background: #ffc56e;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,181,71,0.3);
            color: #1a1a1a;
        }
        .btn-primary:hover i {
            transform: translateX(4px);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--color-text-light);
            border: 1.5px solid var(--color-border-dark);
        }
        .btn-outline-light:hover {
            border-color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.06);
            color: var(--color-accent-cyan);
            transform: translateY(-2px);
        }
        .btn-outline-light:hover i {
            transform: translateX(4px);
        }

        .hero-stats-preview {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }

        .hero-stat-preview {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stat-preview .num {
            font-family: var(--font-mono);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-accent-cyan);
        }
        .hero-stat-preview .label {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-visual-card {
            position: relative;
            width: 100%;
            max-width: 480px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255,255,255,0.08);
            box-shadow: var(--shadow-dark-hover);
            background: var(--color-bg-panel);
        }

        .hero-visual-card img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        .hero-visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px;
            background: linear-gradient(to top, rgba(14,17,20,0.95), transparent);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .hero-visual-overlay span {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-light);
        }

        .hero-visual-overlay .tag {
            font-size: 11px;
            padding: 4px 10px;
            background: rgba(31,229,168,0.15);
            color: var(--color-accent-cyan);
            border-radius: var(--radius-full);
            font-weight: 600;
        }

        .hero-series-nav {
            position: absolute;
            bottom: -20px;
            left: 0;
            right: 0;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            z-index: 3;
        }
        .hero-series-nav a {
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-light);
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
        }
        .hero-series-nav a:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.06);
            transform: translateY(-2px);
        }

        @media (max-width: 1023px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-text { max-width: 100%; }
            .hero-title { font-size: 40px; }
            .hero-visual-card { max-width: 100%; }
            .hero-visual-card img { height: 280px; }
            .hero-series-nav { position: relative; bottom: auto; margin-top: 16px; }
        }

        @media (max-width: 639px) {
            .hero-section { min-height: auto; padding-top: calc(var(--nav-height) + 24px); }
            .hero-content { padding: 32px 0 48px; }
            .hero-title { font-size: 30px; }
            .hero-subtitle { font-size: 16px; }
            .hero-cta-group { flex-wrap: wrap; }
            .btn { width: 100%; justify-content: center; }
            .hero-stats-preview { gap: 16px; }
            .hero-visual-card img { height: 200px; }
        }

        /* ============ SECTION SHARED ============ */
        .section {
            padding: 72px 0;
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-light);
        }
        .section-light {
            background: var(--color-bg-light);
            color: var(--color-text-dark);
        }
        .section-deep {
            background: var(--color-bg-deep);
            color: var(--color-text-light);
        }

        .section-header {
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--color-accent-cyan);
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: 32px;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 640px;
            line-height: 1.8;
        }
        .section-light .section-desc,
        .section-light .section-tag {
            color: var(--color-text-muted-dark);
        }
        .section-light .section-tag {
            color: #0d9488;
        }

        @media (max-width: 639px) {
            .section { padding: 48px 0; }
            .section-title { font-size: 26px; }
            .section-header { margin-bottom: 28px; }
        }

        /* fade-in animation */
        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1);
        }
        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ============ METRICS DASHBOARD ============ */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--color-bg-deep);
        }
        .metric-item {
            padding: 32px 28px;
            text-align: center;
            border-right: 1px solid var(--color-border-dark);
            position: relative;
            transition: background var(--transition-fast);
        }
        .metric-item:last-child {
            border-right: none;
        }
        .metric-item:hover {
            background: rgba(31,229,168,0.04);
        }
        .metric-num {
            font-family: var(--font-mono);
            font-size: 44px;
            font-weight: 700;
            letter-spacing: -0.03em;
            color: var(--color-text-light);
            line-height: 1.2;
            display: flex;
            align-items: baseline;
            justify-content: center;
            gap: 2px;
        }
        .metric-num .suffix {
            font-size: 20px;
            color: var(--color-accent-cyan);
        }
        .metric-label {
            margin-top: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 500;
        }
        .metric-bar {
            margin-top: 12px;
            height: 3px;
            background: var(--color-border-dark);
            border-radius: 2px;
            overflow: hidden;
        }
        .metric-bar span {
            display: block;
            height: 100%;
            width: 0;
            background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-purple));
            border-radius: 2px;
            transition: width 1.2s cubic-bezier(0.16,1,0.3,1);
        }

        @media (max-width: 1023px) {
            .metrics-grid { grid-template-columns: repeat(2, 1fr); }
            .metric-item:nth-child(2) { border-right: none; }
            .metric-item:nth-child(1), .metric-item:nth-child(2) { border-bottom: 1px solid var(--color-border-dark); }
        }
        @media (max-width: 639px) {
            .metrics-grid { grid-template-columns: 1fr; }
            .metric-item { border-right: none; border-bottom: 1px solid var(--color-border-dark); }
            .metric-item:last-child { border-bottom: none; }
            .metric-num { font-size: 36px; }
        }

        /* ============ BRAND INTRO ============ */
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .brand-intro-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-dark);
            border: 1px solid var(--color-border-dark);
        }
        .brand-intro-img img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }
        .brand-intro-text .section-title {
            margin-bottom: 20px;
        }
        .brand-intro-text p {
            color: var(--color-text-muted);
            font-size: 16px;
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .brand-intro-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .brand-intro-tags span {
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.06);
            border: 1px solid rgba(31,229,168,0.18);
            border-radius: var(--radius-full);
        }

        @media (max-width: 1023px) {
            .brand-intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .brand-intro-img img { height: 260px; }
        }

        /* ============ SERVICE MATRIX ============ */
        .service-matrix {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .service-card-large {
            grid-row: span 2;
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .service-card-large::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-purple));
            opacity: 0.7;
        }
        .service-card-large:hover,
        .service-card {
            border-color: rgba(31,229,168,0.3);
            box-shadow: var(--shadow-dark-hover);
            transform: translateY(-4px);
        }
        .service-card {
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-base);
            position: relative;
        }
        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.08);
            border: 1px solid rgba(31,229,168,0.16);
        }
        .service-card-large .service-icon {
            width: 56px;
            height: 56px;
            font-size: 26px;
        }
        .service-card h3,
        .service-card-large h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-light);
            margin-bottom: 10px;
        }
        .service-card p,
        .service-card-large p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .service-card .service-link,
        .service-card-large .service-link {
            margin-top: auto;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .service-card .service-link i,
        .service-card-large .service-link i {
            transition: transform var(--transition-fast);
        }
        .service-card .service-link:hover i,
        .service-card-large .service-link:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 767px) {
            .service-matrix { grid-template-columns: 1fr; }
            .service-card-large { grid-row: auto; }
        }

        /* ============ COMPARISON TABLE ============ */
        .comparison-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-dark);
            background: var(--color-bg-deep);
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 680px;
            font-size: 14px;
        }
        .comparison-table th {
            padding: 16px 20px;
            text-align: left;
            font-weight: 700;
            color: var(--color-text-muted);
            background: rgba(255,255,255,0.03);
            border-bottom: 1px solid var(--color-border-dark);
            font-size: 13px;
            letter-spacing: 0.03em;
        }
        .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.04);
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        .comparison-table tr:hover td {
            background: rgba(31,229,168,0.02);
        }
        .comparison-table .highlight-cell {
            color: var(--color-accent-cyan);
            font-weight: 600;
        }
        .comparison-table .highlight-row td {
            background: rgba(123,92,240,0.06);
        }
        .comparison-table .plan-name {
            font-weight: 700;
            color: var(--color-text-light);
        }
        .comparison-table .plan-badge {
            display: inline-block;
            padding: 2px 8px;
            font-size: 11px;
            font-weight: 700;
            border-radius: var(--radius-full);
            background: rgba(255,181,71,0.15);
            color: var(--color-accent-orange);
        }

        /* ============ NEWS ============ */
        .news-featured {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 24px;
            margin-bottom: 24px;
        }
        .news-featured-card {
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .news-featured-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-dark-hover);
            border-color: rgba(31,229,168,0.25);
        }
        .news-featured-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .news-featured-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-date {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 8px;
            font-family: var(--font-mono);
        }
        .news-featured-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-light);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-featured-body p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-accent-cyan);
            border: 1.5px solid rgba(31,229,168,0.3);
            border-radius: var(--radius-sm);
            background: transparent;
            transition: all var(--transition-fast);
            align-self: flex-start;
        }
        .btn-read-more:hover {
            background: rgba(31,229,168,0.08);
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
            transform: translateY(-2px);
        }
        .btn-read-more i {
            transition: transform var(--transition-fast);
        }
        .btn-read-more:hover i {
            transform: translateX(3px);
        }

        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .news-list-item {
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-fast);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .news-list-item:hover {
            border-color: rgba(31,229,168,0.25);
            background: rgba(255,255,255,0.02);
            transform: translateY(-2px);
        }
        .news-list-item .news-date {
            font-size: 12px;
            margin-bottom: 0;
        }
        .news-list-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-light);
            line-height: 1.5;
        }
        .news-list-item p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        .news-list-item .btn-read-more {
            font-size: 12px;
            padding: 5px 12px;
        }

        @media (max-width: 767px) {
            .news-featured { grid-template-columns: 1fr; }
            .news-list { grid-template-columns: 1fr; }
        }

        /* ============ DEEP CONTENT ============ */
        .deep-content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .deep-article {
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: all var(--transition-base);
        }
        .deep-article:hover {
            border-color: rgba(123,92,240,0.3);
            box-shadow: var(--shadow-dark-hover);
        }
        .deep-article .deep-tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 700;
            border-radius: var(--radius-full);
            background: rgba(123,92,240,0.12);
            color: var(--color-accent-purple);
            margin-bottom: 12px;
        }
        .deep-article h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-light);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .deep-article .deep-meta {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            font-family: var(--font-mono);
        }
        .deep-article p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.85;
            margin-bottom: 14px;
        }
        .deep-article .deep-keypoint {
            padding: 12px 16px;
            background: rgba(255,181,71,0.05);
            border-left: 3px solid var(--color-accent-orange);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        @media (max-width: 767px) {
            .deep-content-grid { grid-template-columns: 1fr; }
            .deep-article { padding: 24px; }
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--color-bg-panel);
            transition: border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(31,229,168,0.25);
        }
        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-light);
            text-align: left;
            transition: color var(--transition-fast);
            font-family: var(--font-sans);
        }
        .faq-question:hover {
            color: var(--color-accent-cyan);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.08);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1), padding 0.3s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
        }

        /* ============ CONVERSION FORM ============ */
        .cta-form-section {
            background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-deep) 50%, var(--color-bg-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-form-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            filter: blur(100px);
            opacity: 0.2;
            background: var(--color-accent-purple);
            top: -200px;
            right: -100px;
        }
        .cta-form-section::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.15;
            background: var(--color-accent-cyan);
            bottom: -150px;
            left: -80px;
        }
        .cta-form-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-form-text h2 {
            font-size: 32px;
            font-weight: 900;
            color: var(--color-text-light);
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-form-text p {
            font-size: 16px;
            color: var(--color-text-muted);
            line-height: 1.8;
        }
        .cta-form-box {
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-dark-hover);
        }
        .cta-form-box .form-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-light);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-muted);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            font-size: 14px;
            border: 1.5px solid var(--color-border-dark);
            border-radius: var(--radius-sm);
            background: var(--color-bg-dark);
            color: var(--color-text-light);
            transition: border-color var(--transition-fast);
            font-family: var(--font-sans);
            appearance: none;
            -webkit-appearance: none;
        }
        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--color-accent-cyan);
        }
        .form-group input::placeholder {
            color: #5C656E;
        }
        .btn-submit {
            width: 100%;
            padding: 14px;
            font-size: 16px;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-sm);
            background: var(--color-accent-cyan);
            color: #0E1114;
            cursor: pointer;
            transition: all var(--transition-fast);
            font-family: var(--font-sans);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .btn-submit:hover {
            background: #4cecb4;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(31,229,168,0.3);
        }
        .btn-submit i {
            transition: transform var(--transition-fast);
        }
        .btn-submit:hover i {
            transform: translateX(4px);
        }
        .form-note {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: 12px;
            text-align: center;
        }

        @media (max-width: 1023px) {
            .cta-form-content { grid-template-columns: 1fr; gap: 32px; }
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-muted);
            padding: 48px 0 24px;
            border-top: 1px solid var(--color-border-dark);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .nav-logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text-light);
            margin-bottom: 12px;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--color-text-muted);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent-cyan);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border-dark);
            font-size: 12px;
            color: #6B7480;
        }
        .footer-bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom-links a {
            color: #6B7480;
            font-size: 12px;
        }
        .footer-bottom-links a:hover {
            color: var(--color-accent-cyan);
        }

        @media (max-width: 1023px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 639px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; align-items: flex-start; }
        }

        /* ============ SCROLL TO TOP ============ */
        .scroll-top-btn {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            color: var(--color-accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            pointer-events: none;
            transition: all var(--transition-base);
            z-index: 90;
            font-size: 16px;
        }
        .scroll-top-btn.show {
            opacity: 1;
            pointer-events: auto;
        }
        .scroll-top-btn:hover {
            border-color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.1);
            transform: translateY(-3px);
        }

        /* Utility */
        .text-accent-cyan { color: var(--color-accent-cyan); }
        .text-accent-orange { color: var(--color-accent-orange); }
        .text-accent-purple { color: var(--color-accent-purple); }
        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }

/* roulang page: category2 */
:root {
            --color-bg-dark: #0E1114;
            --color-bg-deep: #151A1F;
            --color-bg-panel: #1A2026;
            --color-bg-light: #F5F6F8;
            --color-accent-cyan: #1FE5A8;
            --color-accent-purple: #7B5CF0;
            --color-accent-orange: #FFB547;
            --color-text-light: #F5F7FA;
            --color-text-dark: #171A1E;
            --color-text-muted: #9BA5AE;
            --color-text-muted-dark: #5C656E;
            --color-border-dark: #263038;
            --color-border-light: #E2E6EA;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-dark: 0 8px 24px rgba(0,0,0,0.15);
            --shadow-dark-hover: 0 16px 40px rgba(0,0,0,0.35);
            --shadow-light: 0 4px 16px rgba(0,0,0,0.06);
            --shadow-light-hover: 0 8px 24px rgba(0,0,0,0.12);
            --font-sans: 'PingFang SC','Noto Sans SC','Microsoft YaHei','Source Han Sans SC','Helvetica Neue',system-ui,-apple-system,sans-serif;
            --font-mono: 'SF Mono','JetBrains Mono','Roboto Mono','Consolas',monospace;
            --transition-fast: 0.2s cubic-bezier(0.4,0,0.2,1);
            --transition-base: 0.35s cubic-bezier(0.4,0,0.2,1);
            --transition-slow: 0.6s cubic-bezier(0.16,1,0.3,1);
            --container-max: 1200px;
            --nav-height: 64px;
        }
        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(--color-text-dark);
            background-color: var(--color-bg-light);
            overflow-x: hidden;
            padding-top: var(--nav-height);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover, a:focus {
            color: var(--color-accent-cyan);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-sans);
            font-size: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 72px 0;
        }
        .section-tight {
            padding: 48px 0;
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-light);
        }
        .section-deep {
            background: var(--color-bg-deep);
            color: var(--color-text-light);
        }
        .section-light {
            background: var(--color-bg-light);
            color: var(--color-text-dark);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent-cyan);
            margin-bottom: 16px;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--color-accent-cyan);
            border-radius: 2px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--color-text-muted);
            line-height: 1.8;
            max-width: 720px;
        }
        .section-dark .section-subtitle {
            color: var(--color-text-muted);
        }
        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--nav-height);
            background: rgba(14, 17, 20, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(14, 17, 20, 0.97);
            border-bottom-color: rgba(31, 229, 168, 0.2);
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-left {
            display: flex;
            align-items: center;
            gap: 32px;
            min-width: 0;
        }
        .nav-logo {
            font-size: 20px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo:hover, .nav-logo:focus {
            color: var(--color-text-light);
        }
        .nav-logo .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #fff;
            font-weight: 700;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu li a:hover,
        .nav-menu li a:focus {
            color: var(--color-text-light);
            background: rgba(255,255,255,0.06);
        }
        .nav-menu li a.active {
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.08);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search-btn {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: transparent;
            color: var(--color-text-muted);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .nav-search-btn:hover {
            color: var(--color-accent-cyan);
            border-color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.06);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            font-size: 14px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--color-accent-orange);
            color: var(--color-bg-dark);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-cta:hover {
            color: var(--color-bg-dark);
            background: #ffc56b;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255,181,71,0.35);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: transparent;
            color: var(--color-text-light);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }
        .nav-toggle:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }
        @media (max-width: 640px) {
            .nav-menu {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
        }
        /* ============ HERO ============ */
        .category-hero {
            position: relative;
            padding: 72px 0 64px;
            background: var(--color-bg-dark);
            color: var(--color-text-light);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(14,17,20,0.6) 0%, rgba(14,17,20,0.9) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-accent-cyan);
        }
        .breadcrumb .separator {
            color: var(--color-border-dark);
        }
        .breadcrumb .current {
            color: var(--color-accent-cyan);
            font-weight: 600;
        }
        .category-hero h1 {
            font-size: 44px;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .category-hero h1 .highlight {
            background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--color-text-muted);
            max-width: 760px;
            margin-bottom: 28px;
        }
        .hero-stats-row {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 16px;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .hero-stat .stat-number {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent-cyan);
            letter-spacing: -0.02em;
        }
        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        /* ============ FILTER BAR ============ */
        .filter-bar {
            background: var(--color-bg-deep);
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border-dark);
        }
        .filter-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-text-muted);
            margin-right: 4px;
            white-space: nowrap;
        }
        .filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-full);
            border: 1px solid var(--color-border-dark);
            background: transparent;
            color: var(--color-text-muted);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .filter-btn:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.06);
        }
        .filter-btn.active {
            background: var(--color-accent-cyan);
            color: var(--color-bg-dark);
            border-color: var(--color-accent-cyan);
            font-weight: 700;
        }
        .sort-select {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: var(--color-bg-panel);
            color: var(--color-text-light);
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            transition: border-color var(--transition-fast);
        }
        .sort-select:hover, .sort-select:focus {
            border-color: var(--color-accent-cyan);
        }
        /* ============ REVIEW CARDS GRID ============ */
        .review-grid-section {
            background: var(--color-bg-light);
            padding: 56px 0 40px;
        }
        .review-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
            margin-bottom: 32px;
        }
        .review-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-light);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-light-hover);
        }
        .review-card .card-media {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .review-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .review-card:hover .card-media img {
            transform: scale(1.05);
        }
        .review-card .card-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.5) 100%);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .review-card:hover .card-media::after {
            opacity: 1;
        }
        .card-score-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            z-index: 2;
            background: rgba(14,17,20,0.85);
            backdrop-filter: blur(8px);
            color: var(--color-accent-orange);
            font-family: var(--font-mono);
            font-size: 18px;
            font-weight: 700;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            letter-spacing: -0.02em;
            border: 1px solid rgba(255,181,71,0.3);
        }
        .review-card .card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted-dark);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .card-meta .card-tag {
            display: inline-flex;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            font-size: 11px;
            font-weight: 600;
            background: rgba(31,229,168,0.1);
            color: #0e9f73;
        }
        .review-card .card-title {
            font-size: 19px;
            font-weight: 800;
            letter-spacing: -0.01em;
            line-height: 1.35;
            margin-bottom: 8px;
            color: var(--color-text-dark);
        }
        .review-card .card-title a {
            color: var(--color-text-dark);
            transition: color var(--transition-fast);
        }
        .review-card .card-title a:hover {
            color: var(--color-accent-cyan);
        }
        .review-card .card-excerpt {
            font-size: 14px;
            color: var(--color-text-muted-dark);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text-dark);
            transition: all var(--transition-fast);
        }
        .card-link i {
            transition: transform var(--transition-fast);
        }
        .card-link:hover {
            color: var(--color-accent-cyan);
        }
        .card-link:hover i {
            transform: translateX(4px);
        }
        /* Asymmetric grid spans */
        .review-card.span-7 { grid-column: span 7; }
        .review-card.span-5 { grid-column: span 5; }
        .review-card.span-4 { grid-column: span 4; }
        .review-card.span-3 { grid-column: span 3; }
        .review-card.span-8 { grid-column: span 8; }
        .review-card.span-12 { grid-column: span 12; }
        .review-card.span-6 { grid-column: span 6; }
        @media (max-width: 1024px) {
            .review-card.span-7,
            .review-card.span-5,
            .review-card.span-4,
            .review-card.span-3,
            .review-card.span-8,
            .review-card.span-6 { grid-column: span 6; }
            .review-card.span-12 { grid-column: span 12; }
        }
        @media (max-width: 520px) {
            .review-card.span-7,
            .review-card.span-5,
            .review-card.span-4,
            .review-card.span-3,
            .review-card.span-8,
            .review-card.span-6,
            .review-card.span-12 { grid-column: span 12; }
            .review-grid { gap: 16px; }
        }
        /* ============ PAGINATION ============ */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            padding: 24px 0 8px;
        }
        .custom-pagination {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .custom-pagination li a,
        .custom-pagination li span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted-dark);
            border: 1px solid var(--color-border-light);
            background: #fff;
            transition: all var(--transition-fast);
        }
        .custom-pagination li a:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }
        .custom-pagination li.current span {
            background: var(--color-accent-cyan);
            color: var(--color-bg-dark);
            border-color: var(--color-accent-cyan);
            font-weight: 700;
        }
        .custom-pagination li.disabled span {
            color: #c0c6cc;
            border-color: var(--color-border-light);
            background: #f0f2f5;
            cursor: not-allowed;
        }
        /* ============ METHODOLOGY SECTION ============ */
        .methodology-section {
            background: var(--color-bg-deep);
            color: var(--color-text-light);
            padding: 64px 0;
        }
        .methodology-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .methodology-item {
            background: var(--color-bg-panel);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            border: 1px solid var(--color-border-dark);
            transition: all var(--transition-base);
        }
        .methodology-item:hover {
            border-color: var(--color-accent-cyan);
            transform: translateY(-3px);
            box-shadow: var(--shadow-dark);
        }
        .methodology-item .m-number {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent-cyan);
            margin-bottom: 8px;
        }
        .methodology-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text-light);
        }
        .methodology-item p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 1024px) {
            .methodology-grid { grid-template-columns: repeat(3, 1fr); }
        }
        @media (max-width: 640px) {
            .methodology-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 420px) {
            .methodology-grid { grid-template-columns: 1fr; }
        }
        /* ============ FAQ ============ */
        .faq-section {
            background: var(--color-bg-light);
            padding: 72px 0;
        }
        .faq-list {
            margin-top: 32px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--shadow-light);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-accent-cyan);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-dark);
            transition: color var(--transition-fast);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--color-accent-cyan);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: all var(--transition-base);
            color: var(--color-text-muted-dark);
        }
        .faq-item.open .faq-icon {
            background: var(--color-accent-cyan);
            color: var(--color-bg-dark);
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            font-size: 14px;
            color: var(--color-text-muted-dark);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        /* ============ CTA SECTION ============ */
        .cta-section {
            background: var(--color-bg-dark);
            padding: 64px 0;
            color: var(--color-text-light);
        }
        .cta-panel {
            background: var(--color-bg-panel);
            border-radius: var(--radius-xl);
            padding: 48px;
            border: 1px solid var(--color-border-dark);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .cta-panel .cta-info h3 {
            font-size: 28px;
            font-weight: 900;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .cta-panel .cta-info p {
            color: var(--color-text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .cta-benefits {
            list-style: none;
            margin: 0 0 24px;
            padding: 0;
        }
        .cta-benefits li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 8px;
        }
        .cta-benefits li i {
            color: var(--color-accent-cyan);
            font-size: 14px;
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .cta-form .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }
        .cta-form input,
        .cta-form select,
        .cta-form textarea {
            width: 100%;
            padding: 13px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: var(--color-bg-dark);
            color: var(--color-text-light);
            font-size: 14px;
            transition: border-color var(--transition-fast);
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: #6b7580;
        }
        .cta-form input:focus,
        .cta-form select:focus,
        .cta-form textarea:focus {
            border-color: var(--color-accent-cyan);
        }
        .cta-form .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 800;
            border-radius: var(--radius-sm);
            background: var(--color-accent-orange);
            color: var(--color-bg-dark);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .cta-form .btn-primary:hover {
            background: #ffc56b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,181,71,0.35);
        }
        .cta-form .btn-primary i {
            transition: transform var(--transition-fast);
        }
        .cta-form .btn-primary:hover i {
            transform: translateX(4px);
        }
        @media (max-width: 768px) {
            .cta-panel {
                grid-template-columns: 1fr;
                padding: 32px 24px;
                gap: 24px;
            }
            .cta-form .form-row {
                grid-template-columns: 1fr;
            }
        }
        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-muted);
            padding: 48px 0 24px;
            border-top: 1px solid var(--color-border-dark);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .nav-logo {
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
            color: var(--color-text-muted);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-light);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent-cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border-dark);
            font-size: 13px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-bottom-links a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--color-accent-cyan);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }
        /* ============ RESPONSIVE ============ */
        @media (max-width: 640px) {
            .container { padding: 0 16px; }
            .section { padding: 48px 0; }
            .section-title { font-size: 26px; }
            .category-hero { padding: 48px 0 40px; }
            .category-hero h1 { font-size: 30px; }
            .hero-stats-row { gap: 20px; }
            .filter-bar .container { flex-direction: column; align-items: flex-start; }
            .filter-group { width: 100%; }
            .nav-cta { padding: 7px 14px; font-size: 12px; }
            .nav-search-btn { width: 34px; height: 34px; }
        }

/* roulang page: category1 */
:root {
            --color-bg-dark: #0E1114;
            --color-bg-deep: #151A1F;
            --color-bg-panel: #1A2026;
            --color-bg-light: #F5F6F8;
            --color-accent-cyan: #1FE5A8;
            --color-accent-purple: #7B5CF0;
            --color-accent-orange: #FFB547;
            --color-text-light: #F5F7FA;
            --color-text-dark: #171A1E;
            --color-text-muted: #9BA5AE;
            --color-text-muted-dark: #5C656E;
            --color-border-dark: #263038;
            --color-border-light: #E2E6EA;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-dark: 0 8px 24px rgba(0,0,0,0.15);
            --shadow-dark-hover: 0 16px 40px rgba(0,0,0,0.35);
            --shadow-light: 0 4px 16px rgba(0,0,0,0.06);
            --shadow-light-hover: 0 8px 24px rgba(0,0,0,0.12);
            --font-sans: 'PingFang SC','Noto Sans SC','Microsoft YaHei','Source Han Sans SC','Helvetica Neue',system-ui,-apple-system,sans-serif;
            --font-mono: 'SF Mono','JetBrains Mono','Roboto Mono','Consolas',monospace;
            --transition-fast: 0.2s cubic-bezier(0.4,0,0.2,1);
            --transition-base: 0.35s cubic-bezier(0.4,0,0.2,1);
            --transition-slow: 0.6s cubic-bezier(0.16,1,0.3,1);
            --container-max: 1200px;
            --nav-height: 64px;
        }

        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(--color-text-dark);
            background-color: var(--color-bg-light);
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover, a:focus {
            color: var(--color-accent-cyan);
            text-decoration: none;
        }
        a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
            outline: 2px solid var(--color-accent-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-sans);
            font-size: inherit;
        }

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--nav-height);
            background: rgba(14, 17, 20, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(14, 17, 20, 0.97);
            border-bottom-color: rgba(31, 229, 168, 0.25);
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-left {
            display: flex;
            align-items: center;
            gap: 32px;
            min-width: 0;
        }
        .nav-logo {
            font-size: 20px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #fff;
            font-weight: 700;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu li a:hover, .nav-menu li a:focus {
            color: var(--color-text-light);
            background: rgba(255,255,255,0.06);
        }
        .nav-menu li a.active {
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.1);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--color-border-dark);
            background: transparent;
            color: var(--color-text-muted);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .nav-search-btn:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.08);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-bg-dark);
            background: var(--color-accent-cyan);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--color-accent-orange);
            color: var(--color-bg-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255,181,71,0.3);
        }
        .hamburger-btn {
            display: none;
            width: 40px;
            height: 40px;
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--color-text-light);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }
        .hamburger-btn:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }

        /* Mobile Drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: var(--color-bg-deep);
            border-left: 1px solid var(--color-border-dark);
            z-index: 200;
            transition: right var(--transition-base);
            padding: 24px 20px;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }
        .mobile-drawer .nav-logo {
            font-size: 18px;
        }
        .mobile-drawer-close {
            width: 36px;
            height: 36px;
            border: 1px solid var(--color-border-dark);
            border-radius: 50%;
            background: transparent;
            color: var(--color-text-light);
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }
        .mobile-drawer-close:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }
        .mobile-drawer .nav-menu {
            flex-direction: column;
            gap: 4px;
            align-items: stretch;
        }
        .mobile-drawer .nav-menu li a {
            padding: 12px 16px;
            font-size: 15px;
            border-radius: var(--radius-md);
            display: block;
        }
        .mobile-drawer .nav-menu li a.active {
            background: rgba(31,229,168,0.1);
            color: var(--color-accent-cyan);
        }
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            z-index: 150;
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .drawer-overlay.show {
            opacity: 1;
        }

        /* Page Hero */
        .page-hero {
            padding: 140px 0 80px;
            background-color: var(--color-bg-dark);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14,17,20,0.95) 0%, rgba(14,17,20,0.7) 50%, rgba(20,26,33,0.85) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-accent-cyan);
        }
        .breadcrumb .sep {
            color: var(--color-border-dark);
        }
        .breadcrumb .current {
            color: var(--color-accent-cyan);
            font-weight: 600;
        }
        .page-hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-text-light);
            margin: 0 0 16px;
            line-height: 1.15;
        }
        .page-hero .hero-subtitle {
            font-size: 17px;
            color: var(--color-text-muted);
            max-width: 720px;
            line-height: 1.75;
            margin-bottom: 28px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 28px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-light);
            background: rgba(255,255,255,0.06);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
        }
        .hero-tag i {
            font-size: 11px;
            color: var(--color-accent-cyan);
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 700;
            color: var(--color-bg-dark);
            background: var(--color-accent-cyan);
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
        }
        .btn-primary:hover {
            background: var(--color-accent-orange);
            color: var(--color-bg-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,181,71,0.35);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-light);
            background: transparent;
            border: 1.5px solid var(--color-border-dark);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
        }
        .btn-secondary:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.06);
            transform: translateY(-2px);
        }

        /* Section Common */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-light);
        }
        .section-light {
            background: var(--color-bg-light);
            color: var(--color-text-dark);
        }
        .section-deep {
            background: var(--color-bg-deep);
            color: var(--color-text-light);
        }
        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent-cyan);
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            margin: 0 0 16px;
            line-height: 1.25;
        }
        .section-desc {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 720px;
            margin: 0 0 40px;
            line-height: 1.7;
        }
        .section-light .section-desc {
            color: var(--color-text-muted-dark);
        }

        /* Value Highlights */
        .value-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }
        .value-card-lg {
            grid-column: span 7;
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            padding: 36px;
            transition: all var(--transition-base);
        }
        .value-card-sm {
            grid-column: span 5;
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .value-card-lg:hover, .value-card-sm:hover {
            border-color: rgba(31,229,168,0.3);
            box-shadow: var(--shadow-dark-hover);
            transform: translateY(-4px);
        }
        .value-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(31,229,168,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-accent-cyan);
            margin-bottom: 16px;
        }
        .value-card-lg h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-text-light);
            margin: 0 0 10px;
        }
        .value-card-sm h3 {
            font-size: 18px;
            font-weight: 800;
            color: var(--color-text-light);
            margin: 0 0 8px;
        }
        .value-card-lg p, .value-card-sm p {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.7;
        }
        .value-stat-row {
            display: flex;
            gap: 24px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .value-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .value-stat .num {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent-cyan);
            letter-spacing: -0.02em;
        }
        .value-stat .lbl {
            font-size: 12px;
            color: var(--color-text-muted);
            letter-spacing: 0.04em;
        }

        /* Info Feature Blocks */
        .info-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 40px;
        }
        .info-block.reverse {
            direction: rtl;
        }
        .info-block.reverse > * {
            direction: ltr;
        }
        .info-block-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-dark);
            box-shadow: var(--shadow-dark);
        }
        .info-block-img img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }
        .info-block-content h3 {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-text-light);
            margin: 0 0 12px;
        }
        .info-block-content p {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0 0 16px;
            line-height: 1.75;
        }
        .info-list {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
        }
        .info-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text-muted);
            padding: 6px 0;
        }
        .info-list li i {
            color: var(--color-accent-cyan);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* Content Cards Grid */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }
        .content-card {
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            border-color: rgba(31,229,168,0.3);
            box-shadow: var(--shadow-dark-hover);
            transform: translateY(-4px);
        }
        .content-card.card-span-3 {
            grid-column: span 3;
        }
        .content-card.card-span-2 {
            grid-column: span 2;
        }
        .content-card.card-span-4 {
            grid-column: span 4;
        }
        .content-card.card-span-6 {
            grid-column: span 6;
        }
        .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .content-card:hover .card-img img {
            transform: scale(1.05);
        }
        .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 700;
            color: var(--color-bg-dark);
            background: var(--color-accent-orange);
            border-radius: var(--radius-full);
            z-index: 2;
        }
        .card-body {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .card-date {
            font-size: 13px;
            color: var(--color-text-muted);
            font-family: var(--font-mono);
        }
        .card-title {
            font-size: 17px;
            font-weight: 800;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.4;
        }
        .card-excerpt {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.65;
            flex: 1;
        }
        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 4px;
        }
        .card-tag {
            font-size: 12px;
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.06);
            padding: 3px 10px;
            border-radius: var(--radius-full);
            border: 1px solid rgba(31,229,168,0.2);
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-accent-cyan);
            margin-top: 8px;
            transition: gap var(--transition-fast);
        }
        .card-link:hover {
            gap: 10px;
            color: var(--color-accent-orange);
        }

        /* Filter Bar */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-md);
            margin-bottom: 32px;
        }
        .filter-group {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }
        .filter-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-text-muted);
            margin-right: 4px;
        }
        .filter-btn {
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-muted);
            background: transparent;
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-full);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .filter-btn:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }
        .filter-btn.active {
            background: var(--color-accent-cyan);
            color: var(--color-bg-dark);
            border-color: var(--color-accent-cyan);
        }
        .filter-spacer {
            flex: 1;
        }
        .filter-select {
            padding: 6px 12px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-light);
            background: var(--color-bg-deep);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-sm);
            cursor: pointer;
        }

        /* Pagination */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            margin-top: 40px;
        }
        .pagination-custom {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .pagination-custom li a, .pagination-custom li span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted);
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .pagination-custom li a:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }
        .pagination-custom li.active span {
            background: var(--color-accent-cyan);
            color: var(--color-bg-dark);
            border-color: var(--color-accent-cyan);
        }
        .pagination-custom li.disabled span {
            opacity: 0.4;
            cursor: not-allowed;
        }

        /* Process Steps */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .process-step {
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition-base);
            position: relative;
        }
        .process-step:hover {
            border-color: rgba(31,229,168,0.25);
            transform: translateY(-4px);
            box-shadow: var(--shadow-dark);
        }
        .step-number {
            font-family: var(--font-mono);
            font-size: 40px;
            font-weight: 700;
            color: rgba(31,229,168,0.15);
            line-height: 1;
            margin-bottom: 16px;
        }
        .process-step h3 {
            font-size: 16px;
            font-weight: 800;
            color: var(--color-text-light);
            margin: 0 0 8px;
        }
        .process-step p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            margin-bottom: 12px;
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-bg-panel);
            transition: border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(31,229,168,0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-light);
            cursor: pointer;
            user-select: none;
            gap: 16px;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--color-accent-cyan);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.75;
        }

        /* CTA Section */
        .cta-panel {
            background: linear-gradient(135deg, var(--color-bg-deep) 0%, var(--color-bg-dark) 100%);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(31,229,168,0.06);
            pointer-events: none;
        }
        .cta-panel h2 {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 900;
            color: var(--color-text-light);
            margin: 0 0 12px;
            letter-spacing: -0.02em;
        }
        .cta-panel p {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 520px;
            margin: 0 auto;
        }
        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            font-size: 15px;
            color: var(--color-text-light);
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-sm);
            transition: border-color var(--transition-fast);
        }
        .cta-form input::placeholder {
            color: var(--color-text-muted);
        }
        .cta-form input:focus {
            border-color: var(--color-accent-cyan);
            outline: none;
        }
        .cta-form .btn-primary {
            white-space: nowrap;
        }
        .cta-note {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 16px;
        }

        /* Footer */
        .site-footer {
            background: var(--color-bg-dark);
            border-top: 1px solid var(--color-border-dark);
            padding: 56px 0 28px;
            color: var(--color-text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand .nav-logo {
            margin-bottom: 12px;
            color: var(--color-text-light);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 800;
            color: var(--color-text-light);
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            padding: 4px 0;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border-dark);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-bottom-links a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--color-accent-cyan);
        }

        /* Responsive */
        @media screen and (max-width: 1024px) {
            .value-card-lg {
                grid-column: span 12;
            }
            .value-card-sm {
                grid-column: span 6;
            }
            .content-card.card-span-3 {
                grid-column: span 3;
            }
            .content-card.card-span-2 {
                grid-column: span 3;
            }
            .content-card.card-span-4 {
                grid-column: span 6;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
            .info-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .info-block.reverse {
                direction: ltr;
            }
            .info-block-img img {
                height: 220px;
            }
        }

        @media screen and (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger-btn {
                display: inline-flex;
            }
            .mobile-drawer {
                display: block;
            }
            .drawer-overlay {
                display: block;
            }
            .page-hero {
                padding: 110px 0 56px;
                min-height: auto;
            }
            .content-card.card-span-3,
            .content-card.card-span-2,
            .content-card.card-span-4 {
                grid-column: span 6;
            }
            .content-card.card-span-6 {
                grid-column: span 6;
            }
            .value-card-sm {
                grid-column: span 12;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .cta-panel {
                padding: 40px 24px;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-spacer {
                display: none;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .nav-wrapper {
                padding: 0 16px;
            }
            .page-hero {
                padding: 100px 0 48px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .content-card.card-span-3,
            .content-card.card-span-2,
            .content-card.card-span-4 {
                grid-column: span 6;
            }
            .content-grid {
                gap: 14px;
            }
            .card-img {
                height: 160px;
            }
            .process-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-panel {
                padding: 32px 18px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form input {
                min-width: auto;
                width: 100%;
            }
            .value-stat-row {
                gap: 16px;
            }
            .value-stat .num {
                font-size: 22px;
            }
            .info-block-img img {
                height: 180px;
            }
            .breadcrumb {
                font-size: 12px;
                gap: 4px;
            }
        }

        /* Scroll animation */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity var(--transition-slow), transform var(--transition-slow);
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category3 */
:root {
            --color-bg-dark: #0E1114;
            --color-bg-deep: #151A1F;
            --color-bg-panel: #1A2026;
            --color-bg-light: #F5F6F8;
            --color-accent-cyan: #1FE5A8;
            --color-accent-purple: #7B5CF0;
            --color-accent-orange: #FFB547;
            --color-text-light: #F5F7FA;
            --color-text-dark: #171A1E;
            --color-text-muted: #9BA5AE;
            --color-text-muted-dark: #5C656E;
            --color-border-dark: #263038;
            --color-border-light: #E2E6EA;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-dark: 0 8px 24px rgba(0,0,0,0.15);
            --shadow-dark-hover: 0 16px 40px rgba(0,0,0,0.35);
            --shadow-light: 0 4px 16px rgba(0,0,0,0.06);
            --shadow-light-hover: 0 8px 24px rgba(0,0,0,0.12);
            --font-sans: 'PingFang SC','Noto Sans SC','Microsoft YaHei','Source Han Sans SC','Helvetica Neue',system-ui,-apple-system,sans-serif;
            --font-mono: 'SF Mono','JetBrains Mono','Roboto Mono','Consolas',monospace;
            --transition-fast: 0.2s cubic-bezier(0.4,0,0.2,1);
            --transition-base: 0.35s cubic-bezier(0.4,0,0.2,1);
            --transition-slow: 0.6s cubic-bezier(0.16,1,0.3,1);
            --container-max: 1200px;
            --nav-height: 64px;
        }
        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(--color-text-dark);
            background-color: var(--color-bg-light);
            overflow-x: hidden;
            margin: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover, a:focus {
            color: var(--color-accent-cyan);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-sans);
            font-size: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--nav-height);
            background: rgba(14,17,20,0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(14,17,20,0.97);
            border-bottom-color: rgba(31,229,168,0.22);
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-left {
            display: flex;
            align-items: center;
            gap: 28px;
            min-width: 0;
        }
        .nav-logo {
            font-size: 20px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #fff;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu li a:hover,
        .nav-menu li a:focus {
            color: var(--color-text-light);
            background: rgba(255,255,255,0.06);
        }
        .nav-menu li a.active {
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.08);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }
        .nav-search input {
            width: 160px;
            height: 36px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: rgba(255,255,255,0.04);
            color: var(--color-text-light);
            padding: 0 32px 0 12px;
            font-size: 13px;
            transition: border-color var(--transition-fast), width var(--transition-base), background var(--transition-fast);
        }
        .nav-search input::placeholder {
            color: var(--color-text-muted);
        }
        .nav-search input:focus {
            outline: none;
            border-color: var(--color-accent-cyan);
            background: rgba(255,255,255,0.06);
            width: 200px;
        }
        .nav-search .search-icon {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 13px;
            color: var(--color-text-muted);
            pointer-events: none;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 36px;
            padding: 0 16px;
            border-radius: var(--radius-sm);
            background: var(--color-accent-orange);
            color: #1A1A1A;
            font-size: 13px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: #ffc46b;
            color: #1A1A1A;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(255,181,71,0.35);
        }
        .nav-burger {
            display: none;
            width: 40px;
            height: 40px;
            border: none;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius-sm);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--color-text-light);
            font-size: 18px;
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-burger:hover {
            background: rgba(255,255,255,0.12);
        }
        @media (max-width: 1024px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(14,17,20,0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 6px;
                border-bottom: 1px solid rgba(255,255,255,0.08);
                box-shadow: 0 20px 40px rgba(0,0,0,0.4);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 12px 16px;
                font-size: 16px;
            }
            .nav-burger {
                display: flex;
            }
            .nav-search input {
                width: 120px;
            }
            .nav-search input:focus {
                width: 160px;
            }
        }
        @media (max-width: 640px) {
            .nav-wrapper {
                padding: 0 16px;
                gap: 8px;
            }
            .nav-logo {
                font-size: 18px;
            }
            .nav-logo .logo-icon {
                width: 26px;
                height: 26px;
                font-size: 13px;
            }
            .nav-search input {
                width: 100px;
                padding-left: 10px;
                font-size: 12px;
            }
            .nav-search input:focus {
                width: 130px;
            }
            .nav-cta {
                padding: 0 12px;
                font-size: 12px;
                height: 34px;
            }
        }

        /* ============ PAGE HERO ============ */
        .page-hero {
            position: relative;
            padding: calc(var(--nav-height) + 72px) 0 80px;
            background-color: var(--color-bg-dark);
            overflow: hidden;
        }
        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            pointer-events: none;
        }
        .page-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(14,17,20,0.6) 0%, rgba(14,17,20,0.75) 60%, var(--color-bg-dark) 100%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumbs {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumbs a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumbs a:hover {
            color: var(--color-accent-cyan);
        }
        .breadcrumbs .sep {
            color: var(--color-text-muted-dark);
            font-size: 12px;
        }
        .breadcrumbs .current {
            color: var(--color-accent-cyan);
            font-weight: 600;
        }
        .page-hero h1 {
            font-size: clamp(2rem, 4vw, 3.2rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-text-light);
            margin: 0 0 16px;
            line-height: 1.25;
        }
        .page-hero h1 .accent {
            color: var(--color-accent-cyan);
        }
        .page-hero .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: var(--color-text-muted);
            max-width: 780px;
            margin: 0 0 28px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 46px;
            padding: 0 24px;
            border-radius: var(--radius-sm);
            background: var(--color-accent-orange);
            color: #1A1A1A;
            font-size: 15px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: #ffc46b;
            color: #1A1A1A;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,181,71,0.35);
        }
        .btn-primary i {
            font-size: 14px;
            transition: transform var(--transition-fast);
        }
        .btn-primary:hover i {
            transform: translateX(4px);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 46px;
            padding: 0 24px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--color-text-light);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid var(--color-border-dark);
            cursor: pointer;
            transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
            white-space: nowrap;
        }
        .btn-ghost:hover {
            border-color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.08);
            color: var(--color-accent-cyan);
        }

        /* ============ FILTER BAR ============ */
        .filter-section {
            background: var(--color-bg-dark);
            border-bottom: 1px solid var(--color-border-dark);
            padding: 24px 0;
            position: sticky;
            top: var(--nav-height);
            z-index: 50;
        }
        .filter-section .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-muted);
            margin-right: 4px;
            white-space: nowrap;
        }
        .filter-btn {
            display: inline-flex;
            align-items: center;
            height: 34px;
            padding: 0 14px;
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-muted);
            background: rgba(255,255,255,0.05);
            border: 1px solid var(--color-border-dark);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .filter-btn:hover {
            color: var(--color-text-light);
            border-color: rgba(31,229,168,0.4);
        }
        .filter-btn.active {
            color: var(--color-accent-cyan);
            border-color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.08);
            font-weight: 700;
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sort-select {
            height: 34px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: rgba(255,255,255,0.05);
            color: var(--color-text-light);
            padding: 0 32px 0 12px;
            font-size: 13px;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%239BA5AE' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 10px center;
            cursor: pointer;
            transition: border-color var(--transition-fast);
        }
        .sort-select:focus {
            outline: none;
            border-color: var(--color-accent-cyan);
        }
        .result-count {
            font-size: 13px;
            color: var(--color-text-muted);
            white-space: nowrap;
        }

        /* ============ GUIDE CARDS GRID ============ */
        .guides-section {
            background: var(--color-bg-light);
            padding: 64px 0 56px;
        }
        .section-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .section-heading h2 {
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-text-dark);
            margin: 0;
        }
        .section-heading .heading-note {
            font-size: 14px;
            color: var(--color-text-muted-dark);
        }
        .guides-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .guide-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-light);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-light-hover);
            border-color: rgba(31,229,168,0.35);
        }
        .guide-card.featured {
            grid-column: span 2;
        }
        .guide-card .card-img {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #e9ecef;
        }
        .guide-card.featured .card-img {
            aspect-ratio: 21/9;
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .guide-card:hover .card-img img {
            transform: scale(1.05);
        }
        .guide-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-flex;
            align-items: center;
            height: 28px;
            padding: 0 12px;
            border-radius: var(--radius-full);
            font-size: 12px;
            font-weight: 700;
            background: rgba(14,17,20,0.82);
            color: var(--color-accent-cyan);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .guide-card .card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted-dark);
            margin-bottom: 10px;
        }
        .guide-card .card-meta .meta-date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .guide-card .card-meta .meta-tag {
            padding: 2px 10px;
            border-radius: var(--radius-full);
            background: rgba(123,92,240,0.08);
            color: var(--color-accent-purple);
            font-weight: 600;
            font-size: 11px;
        }
        .guide-card h3 {
            font-size: 17px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--color-text-dark);
            margin: 0 0 8px;
            line-height: 1.45;
        }
        .guide-card.featured h3 {
            font-size: 20px;
        }
        .guide-card .card-excerpt {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-muted-dark);
            margin: 0 0 16px;
            flex: 1;
        }
        .guide-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-accent-purple);
            transition: color var(--transition-fast);
            align-self: flex-start;
        }
        .guide-card .read-more:hover {
            color: var(--color-accent-cyan);
        }
        .guide-card .read-more i {
            font-size: 12px;
            transition: transform var(--transition-fast);
        }
        .guide-card .read-more:hover i {
            transform: translateX(4px);
        }
        @media (max-width: 1024px) {
            .guides-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-card.featured {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .guides-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .guide-card.featured {
                grid-column: span 1;
            }
            .guide-card .card-img {
                aspect-ratio: 16/10;
            }
            .guide-card.featured .card-img {
                aspect-ratio: 16/10;
            }
            .guide-card h3 {
                font-size: 16px;
            }
            .guide-card.featured h3 {
                font-size: 17px;
            }
            .guides-section {
                padding: 40px 0 36px;
            }
            .section-heading {
                margin-bottom: 24px;
            }
        }

        /* ============ PAGINATION ============ */
        .pagination-section {
            background: var(--color-bg-light);
            padding: 0 0 64px;
        }
        .pagination-section .container {
            display: flex;
            justify-content: center;
        }
        .custom-pagination {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .custom-pagination li a,
        .custom-pagination li span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 8px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-dark);
            background: #fff;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
        }
        .custom-pagination li a:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }
        .custom-pagination li.active span {
            background: var(--color-accent-cyan);
            color: #fff;
            border-color: var(--color-accent-cyan);
            font-weight: 700;
        }
        .custom-pagination li.disabled span {
            opacity: 0.5;
            cursor: not-allowed;
        }
        @media (max-width: 640px) {
            .custom-pagination li a,
            .custom-pagination li span {
                min-width: 34px;
                height: 34px;
                font-size: 13px;
            }
            .pagination-section {
                padding-bottom: 40px;
            }
        }

        /* ============ GUIDE VALUE PROPS ============ */
        .value-props {
            background: var(--color-bg-dark);
            padding: 72px 0;
        }
        .value-props .section-heading h2 {
            color: var(--color-text-light);
        }
        .value-props .section-heading .heading-note {
            color: var(--color-text-muted);
        }
        .props-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .prop-item {
            background: var(--color-bg-panel);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            transition: border-color var(--transition-fast), transform var(--transition-fast);
        }
        .prop-item:hover {
            border-color: rgba(31,229,168,0.3);
            transform: translateY(-3px);
        }
        .prop-item .prop-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(31,229,168,0.1);
            color: var(--color-accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 14px;
        }
        .prop-item h3 {
            font-size: 16px;
            font-weight: 800;
            color: var(--color-text-light);
            margin: 0 0 8px;
        }
        .prop-item p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-text-muted);
            margin: 0;
        }
        @media (max-width: 1024px) {
            .props-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .props-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .value-props {
                padding: 48px 0;
            }
        }

        /* ============ PROCESS STEPS ============ */
        .process-section {
            background: var(--color-bg-light);
            padding: 72px 0;
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .process-step {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            padding: 28px 24px;
            box-shadow: var(--shadow-light);
            position: relative;
            counter-increment: step;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-light-hover);
        }
        .process-step .step-number {
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 700;
            color: var(--color-accent-orange);
            margin-bottom: 12px;
            display: block;
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 800;
            color: var(--color-text-dark);
            margin: 0 0 10px;
        }
        .process-step p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-text-muted-dark);
            margin: 0;
        }
        @media (max-width: 1024px) {
            .process-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .process-section {
                padding: 48px 0;
            }
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--color-bg-dark);
            padding: 72px 0;
        }
        .faq-section .section-heading h2 {
            color: var(--color-text-light);
        }
        .faq-section .section-heading .heading-note {
            color: var(--color-text-muted);
        }
        .accordion {
            margin: 0;
            list-style: none;
            padding: 0;
        }
        .accordion-item {
            border-bottom: 1px solid var(--color-border-dark);
        }
        .accordion-item:first-child {
            border-top: 1px solid var(--color-border-dark);
        }
        .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 4px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-light);
            transition: color var(--transition-fast);
            border: none;
            background: none;
            width: 100%;
            text-align: left;
        }
        .accordion-title:hover {
            color: var(--color-accent-cyan);
        }
        .accordion-title .accordion-icon {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .accordion-item.is-active .accordion-title {
            color: var(--color-accent-cyan);
        }
        .accordion-item.is-active .accordion-title .accordion-icon {
            transform: rotate(180deg);
            color: var(--color-accent-cyan);
        }
        .accordion-content {
            display: none;
            padding: 0 4px 20px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-muted);
        }
        .accordion-item.is-active .accordion-content {
            display: block;
        }
        @media (max-width: 640px) {
            .faq-section {
                padding: 48px 0;
            }
            .accordion-title {
                font-size: 15px;
                padding: 16px 0;
            }
        }

        /* ============ CTA SUBSCRIBE ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1a1040 50%, var(--color-bg-dark) 100%);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(123,92,240,0.2);
            filter: blur(60px);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(31,229,168,0.15);
            filter: blur(60px);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-text-light);
            margin: 0 0 12px;
        }
        .cta-section .cta-desc {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-form {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .cta-form input {
            flex: 1;
            min-width: 240px;
            height: 48px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: rgba(255,255,255,0.06);
            color: var(--color-text-light);
            padding: 0 16px;
            font-size: 15px;
            transition: border-color var(--transition-fast);
        }
        .cta-form input::placeholder {
            color: var(--color-text-muted);
        }
        .cta-form input:focus {
            outline: none;
            border-color: var(--color-accent-cyan);
        }
        .cta-form .btn-primary {
            height: 48px;
            padding: 0 28px;
            font-size: 16px;
        }
        .cta-note {
            font-size: 12px;
            color: var(--color-text-muted-dark);
            margin-top: 14px;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-form input {
                min-width: 100%;
            }
            .cta-form .btn-primary {
                width: 100%;
                justify-content: center;
            }
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-bg-dark);
            border-top: 1px solid var(--color-border-dark);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand .nav-logo {
            font-size: 18px;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-text-muted);
            max-width: 320px;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 800;
            color: var(--color-text-light);
            margin: 0 0 14px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--color-text-muted);
            padding: 5px 0;
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent-cyan);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted-dark);
            border-top: 1px solid var(--color-border-dark);
            padding-top: 20px;
            flex-wrap: wrap;
        }
        .footer-bottom-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-bottom-links a {
            color: var(--color-text-muted-dark);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--color-accent-cyan);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
        }

        /* ============ FADE UP ANIMATION ============ */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity var(--transition-slow), transform var(--transition-slow);
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category4 */
:root {
            --color-bg-dark: #0E1114;
            --color-bg-deep: #151A1F;
            --color-bg-panel: #1A2026;
            --color-bg-light: #F5F6F8;
            --color-accent-cyan: #1FE5A8;
            --color-accent-purple: #7B5CF0;
            --color-accent-orange: #FFB547;
            --color-text-light: #F5F7FA;
            --color-text-dark: #171A1E;
            --color-text-muted: #9BA5AE;
            --color-text-muted-dark: #5C656E;
            --color-border-dark: #263038;
            --color-border-light: #E2E6EA;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-dark: 0 8px 24px rgba(0,0,0,0.15);
            --shadow-dark-hover: 0 16px 40px rgba(0,0,0,0.35);
            --shadow-light: 0 4px 16px rgba(0,0,0,0.06);
            --shadow-light-hover: 0 8px 24px rgba(0,0,0,0.12);
            --font-sans: 'PingFang SC','Noto Sans SC','Microsoft YaHei','Source Han Sans SC','Helvetica Neue',system-ui,-apple-system,sans-serif;
            --font-mono: 'SF Mono','JetBrains Mono','Roboto Mono','Consolas',monospace;
            --transition-fast: 0.2s cubic-bezier(0.4,0,0.2,1);
            --transition-base: 0.35s cubic-bezier(0.4,0,0.2,1);
            --transition-slow: 0.6s cubic-bezier(0.16,1,0.3,1);
            --container-max: 1200px;
            --nav-height: 64px;
        }
        *,
        *::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(--color-text-dark);
            background-color: var(--color-bg-light);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover,
        a:focus {
            color: var(--color-accent-cyan);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent-cyan);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--font-sans);
            font-size: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
        }
        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--nav-height);
            background: rgba(14, 17, 20, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(14, 17, 20, 0.97);
            border-bottom-color: rgba(31, 229, 168, 0.2);
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-left {
            display: flex;
            align-items: center;
            gap: 32px;
            min-width: 0;
        }
        .nav-logo {
            font-size: 20px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #fff;
            font-weight: 700;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu li a:hover,
        .nav-menu li a:focus {
            color: var(--color-text-light);
            background: rgba(255,255,255,0.06);
        }
        .nav-menu li a.active {
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.08);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search-btn {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: transparent;
            color: var(--color-text-muted);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
            font-size: 14px;
        }
        .nav-search-btn:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.06);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--color-accent-orange);
            color: #171A1E;
            white-space: nowrap;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover {
            background: #FFC267;
            color: #171A1E;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255,181,71,0.35);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: transparent;
            color: var(--color-text-light);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 18px;
            transition: all var(--transition-fast);
        }
        .nav-toggle:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }
        @media (max-width: 1024px) {
            .nav-menu {
                gap: 0;
            }
            .nav-menu li a {
                padding: 8px 10px;
                font-size: 13px;
            }
            .nav-left {
                gap: 16px;
            }
            .nav-cta span {
                display: none;
            }
            .nav-cta {
                padding: 8px 12px;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: inline-flex;
            }
            .nav-menu {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(14, 17, 20, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 24px 24px;
                border-bottom: 1px solid var(--color-border-dark);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform var(--transition-base), opacity var(--transition-base);
                z-index: 99;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-menu li a {
                padding: 14px 12px;
                font-size: 16px;
                text-align: center;
                border-radius: var(--radius-sm);
            }
            .nav-cta span {
                display: inline;
            }
            .nav-right {
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .nav-wrapper {
                padding: 0 16px;
            }
            .nav-logo {
                font-size: 17px;
            }
            .nav-logo .logo-icon {
                width: 24px;
                height: 24px;
                font-size: 12px;
            }
            .nav-cta {
                padding: 8px 10px;
                font-size: 12px;
            }
            .nav-cta span {
                display: none;
            }
            .nav-search-btn {
                width: 32px;
                height: 32px;
                font-size: 12px;
            }
        }
        /* ============ PAGE HERO ============ */
        .page-hero {
            position: relative;
            padding: calc(var(--nav-height) + 60px) 0 60px;
            background: var(--color-bg-dark);
            color: var(--color-text-light);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(14,17,20,0.92) 30%, rgba(123,92,240,0.25) 70%, rgba(11,86,70,0.45));
            z-index: 0;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-accent-cyan);
        }
        .breadcrumb .sep {
            color: var(--color-accent-cyan);
            opacity: 0.6;
            font-size: 10px;
        }
        .breadcrumb .current {
            color: var(--color-accent-cyan);
            font-weight: 600;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--color-text-light);
        }
        .page-hero h1 .highlight {
            color: var(--color-accent-cyan);
            position: relative;
        }
        .page-hero .hero-desc {
            font-size: 17px;
            color: var(--color-text-muted);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-full);
            background: rgba(31,229,168,0.1);
            color: var(--color-accent-cyan);
            border: 1px solid rgba(31,229,168,0.25);
        }
        .hero-badge.orange {
            background: rgba(255,181,71,0.1);
            color: var(--color-accent-orange);
            border-color: rgba(255,181,71,0.25);
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-accent-orange);
            color: #171A1E;
        }
        .btn-primary:hover {
            background: #FFC267;
            color: #171A1E;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(255,181,71,0.4);
        }
        .btn-secondary {
            background: transparent;
            color: var(--color-text-light);
            border: 1px solid var(--color-border-dark);
        }
        .btn-secondary:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
            background: rgba(31,229,168,0.06);
            transform: translateY(-2px);
        }
        .btn i {
            transition: transform var(--transition-base);
        }
        .btn:hover i {
            transform: translateX(3px);
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: calc(var(--nav-height) + 40px) 0 40px;
                min-height: auto;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero .hero-desc {
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 13px;
            }
            .breadcrumb {
                font-size: 12px;
                gap: 4px;
            }
        }
        /* ============ FILTER BAR ============ */
        .filter-section {
            background: #fff;
            border-bottom: 1px solid var(--color-border-light);
            padding: 16px 0;
            position: sticky;
            top: var(--nav-height);
            z-index: 50;
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
        }
        .filter-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-text-muted-dark);
            white-space: nowrap;
        }
        .filter-btn-group {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .filter-btn {
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-full);
            border: 1px solid var(--color-border-light);
            background: #fff;
            color: var(--color-text-muted-dark);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .filter-btn:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }
        .filter-btn.active {
            background: var(--color-accent-cyan);
            color: #171A1E;
            border-color: var(--color-accent-cyan);
        }
        .filter-select {
            padding: 6px 12px;
            font-size: 13px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-light);
            background: #fff;
            color: var(--color-text-dark);
            cursor: pointer;
        }
        @media (max-width: 520px) {
            .filter-section {
                padding: 10px 0;
            }
            .filter-btn {
                padding: 5px 12px;
                font-size: 12px;
            }
            .filter-label {
                font-size: 12px;
            }
        }
        /* ============ DOWNLOAD CARDS GRID ============ */
        .download-section {
            padding: 56px 0 64px;
            background: var(--color-bg-light);
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-text-dark);
            margin: 0;
        }
        .section-head .section-sub {
            font-size: 15px;
            color: var(--color-text-muted-dark);
            margin-top: 4px;
        }
        .section-head .section-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent-purple);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-fast);
        }
        .section-head .section-link:hover {
            color: var(--color-accent-cyan);
        }
        .download-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 20px;
        }
        .download-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-light);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }
        .download-card:hover {
            box-shadow: var(--shadow-light-hover);
            transform: translateY(-4px);
            border-color: rgba(31,229,168,0.3);
        }
        .download-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--color-bg-deep);
        }
        .download-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .download-card:hover .card-img img {
            transform: scale(1.05);
        }
        .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            font-size: 11px;
            font-weight: 700;
            border-radius: var(--radius-full);
            background: rgba(14,17,20,0.85);
            color: var(--color-accent-cyan);
            z-index: 2;
        }
        .card-img .card-tag.purple {
            background: rgba(123,92,240,0.85);
            color: #fff;
        }
        .card-img .card-tag.orange {
            background: rgba(255,181,71,0.85);
            color: #171A1E;
        }
        .card-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-body h3 {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--color-text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted-dark);
            margin-bottom: 12px;
        }
        .card-body .card-meta i {
            color: var(--color-accent-purple);
            font-size: 11px;
        }
        .card-body .card-desc {
            font-size: 14px;
            color: var(--color-text-muted-dark);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .card-body .card-actions {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
        }
        .card-download-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--color-accent-cyan);
            color: #171A1E;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
        }
        .card-download-btn:hover {
            background: #4AEFC0;
            color: #171A1E;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(31,229,168,0.3);
        }
        .card-info-btn {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--color-text-muted-dark);
            border: 1px solid var(--color-border-light);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .card-info-btn:hover {
            border-color: var(--color-accent-purple);
            color: var(--color-accent-purple);
            background: rgba(123,92,240,0.06);
        }
        .grid-span-7 {
            grid-column: span 7;
        }
        .grid-span-5 {
            grid-column: span 5;
        }
        .grid-span-4 {
            grid-column: span 4;
        }
        .grid-span-8 {
            grid-column: span 8;
        }
        .grid-span-6 {
            grid-column: span 6;
        }
        .grid-span-12 {
            grid-column: span 12;
        }
        @media (max-width: 1024px) {
            .grid-span-7, .grid-span-5, .grid-span-4, .grid-span-8 {
                grid-column: span 6;
            }
        }
        @media (max-width: 768px) {
            .grid-span-7, .grid-span-5, .grid-span-4, .grid-span-8, .grid-span-6 {
                grid-column: span 12;
            }
            .download-grid {
                gap: 16px;
            }
            .section-head h2 {
                font-size: 26px;
            }
        }
        /* ============ PAGINATION ============ */
        .pagination-wrapper {
            display: flex;
            justify-content: center;
            margin-top: 36px;
        }
        .custom-pagination {
            display: flex;
            gap: 4px;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .custom-pagination li a,
        .custom-pagination li span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 8px;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-light);
            background: #fff;
            color: var(--color-text-muted-dark);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .custom-pagination li a:hover {
            border-color: var(--color-accent-cyan);
            color: var(--color-accent-cyan);
        }
        .custom-pagination li.active span {
            background: var(--color-accent-cyan);
            color: #171A1E;
            border-color: var(--color-accent-cyan);
        }
        .custom-pagination li.disabled span {
            opacity: 0.4;
            cursor: not-allowed;
        }
        /* ============ DOWNLOAD FEATURES ============ */
        .features-section {
            padding: 64px 0;
            background: var(--color-bg-dark);
            color: var(--color-text-light);
        }
        .features-section .section-head h2 {
            color: var(--color-text-light);
        }
        .features-section .section-head .section-sub {
            color: var(--color-text-muted);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .feature-item {
            background: var(--color-bg-panel);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border-dark);
            transition: all var(--transition-base);
        }
        .feature-item:hover {
            border-color: rgba(31,229,168,0.3);
            box-shadow: var(--shadow-dark-hover);
            transform: translateY(-4px);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(31,229,168,0.15), rgba(123,92,240,0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-accent-cyan);
            margin-bottom: 16px;
        }
        .feature-item h3 {
            font-size: 17px;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--color-text-light);
        }
        .feature-item p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .feature-item {
                padding: 20px 18px;
            }
        }
        /* ============ DOWNLOAD STEPS ============ */
        .steps-section {
            padding: 64px 0;
            background: #fff;
        }
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            position: relative;
            background: var(--color-bg-light);
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            counter-increment: step;
        }
        .step-card:hover {
            box-shadow: var(--shadow-light-hover);
            transform: translateY(-4px);
            border-color: rgba(123,92,240,0.25);
        }
        .step-card::before {
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 24px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-accent-purple);
            color: #fff;
            font-size: 14px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
        }
        .step-card h3 {
            font-size: 16px;
            font-weight: 800;
            color: var(--color-text-dark);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--color-text-muted-dark);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 1024px) {
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px 20px;
            }
        }
        @media (max-width: 520px) {
            .steps-list {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .step-card {
                padding: 24px 18px 20px;
            }
        }
        /* ============ STATS BAND ============ */
        .stats-section {
            padding: 48px 0;
            background: var(--color-bg-dark);
            color: var(--color-text-light);
            border-bottom: 1px solid var(--color-border-dark);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 20px;
            border-right: 1px solid var(--color-border-dark);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-number {
            font-family: var(--font-mono);
            font-size: 42px;
            font-weight: 700;
            color: var(--color-accent-cyan);
            letter-spacing: -0.02em;
            line-height: 1.2;
            display: block;
        }
        .stat-label {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item {
                border-right: none;
                border-bottom: 1px solid var(--color-border-dark);
                padding: 12px;
            }
            .stat-number {
                font-size: 30px;
            }
        }
        @media (max-width: 520px) {
            .stat-number {
                font-size: 24px;
            }
            .stat-label {
                font-size: 11px;
            }
        }
        /* ============ FAQ ============ */
        .faq-section {
            padding: 64px 0;
            background: var(--color-bg-light);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .accordion {
            margin: 0;
            list-style: none;
            padding: 0;
            border: none;
        }
        .accordion-item {
            margin-bottom: 12px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-light);
            transition: all var(--transition-base);
        }
        .accordion-item:hover {
            border-color: rgba(31,229,168,0.25);
        }
        .accordion-title {
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition-fast);
        }
        .accordion-title:hover {
            color: var(--color-accent-purple);
        }
        .accordion-title .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--color-text-muted-dark);
            transition: all var(--transition-base);
            flex-shrink: 0;
        }
        .accordion-item.is-active .accordion-title .faq-icon {
            background: var(--color-accent-cyan);
            color: #171A1E;
            transform: rotate(180deg);
        }
        .accordion-content {
            padding: 0 24px 18px;
            font-size: 14px;
            color: var(--color-text-muted-dark);
            line-height: 1.7;
            display: none;
        }
        .accordion-item.is-active .accordion-content {
            display: block;
        }
        @media (max-width: 520px) {
            .accordion-title {
                padding: 14px 16px;
                font-size: 14px;
            }
            .accordion-content {
                padding: 0 16px 14px;
                font-size: 13px;
            }
        }
        /* ============ CTA SECTION ============ */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1A2026 50%, #1B2430 100%);
            color: var(--color-text-light);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(31,229,168,0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 80%, rgba(123,92,240,0.1) 0%, transparent 60%);
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-info h2 {
            font-size: 32px;
            font-weight: 900;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            color: var(--color-text-light);
        }
        .cta-info h2 .highlight {
            color: var(--color-accent-cyan);
        }
        .cta-info p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .cta-perk-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .cta-perk-list li {
            font-size: 13px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .cta-perk-list li i {
            color: var(--color-accent-cyan);
            font-size: 12px;
        }
        .cta-form-panel {
            background: rgba(26,32,38,0.9);
            border: 1px solid var(--color-border-dark);
            border-radius: var(--radius-xl);
            padding: 32px;
            box-shadow: var(--shadow-dark);
            backdrop-filter: blur(10px);
        }
        .cta-form-panel h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-text-light);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-muted);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            font-size: 14px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-dark);
            background: rgba(14,17,20,0.6);
            color: var(--color-text-light);
            transition: all var(--transition-fast);
        }
        .form-group input::placeholder {
            color: rgba(155,165,174,0.6);
        }
        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--color-accent-cyan);
            outline: none;
            box-shadow: 0 0 0 3px rgba(31,229,168,0.1);
        }
        .form-group select option {
            background: var(--color-bg-dark);
            color: var(--color-text-light);
        }
        .form-submit-btn {
            width: 100%;
            padding: 14px 24px;
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--color-accent-orange);
            color: #171A1E;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all var(--transition-base);
        }
        .form-submit-btn:hover {
            background: #FFC267;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(255,181,71,0.4);
        }
        .form-submit-btn i {
            transition: transform var(--transition-base);
        }
        .form-submit-btn:hover i {
            transform: translateX(4px);
        }
        @media (max-width: 768px) {
            .cta-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-info h2 {
                font-size: 26px;
            }
            .cta-form-panel {
                padding: 24px 20px;
            }
        }
        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-muted);
            padding: 48px 0 24px;
            border-top: 1px solid var(--color-border-dark);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .nav-logo {
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-text-muted);
            margin: 0;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text-light);
            margin-bottom: 12px;
            letter-spacing: 0;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--color-text-muted);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent-cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            padding-top: 16px;
            border-top: 1px solid var(--color-border-dark);
            font-size: 12px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-bottom-links a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--color-accent-cyan);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: span 2;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .site-footer {
                padding: 32px 0 16px;
            }
        }
        /* ============ SCROLL REVEAL ============ */
        .reveal-anim {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s cubic-bezier(0.16,1,0.3,1), transform 0.6s cubic-bezier(0.16,1,0.3,1);
        }
        .reveal-anim.is-visible {
            opacity: 1;
            transform: translateY(0);
        }
        /* ============ MOBILE DRAWER OVERLAY ============ */
        .nav-overlay {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            z-index: 98;
            border: none;
        }
        .nav-overlay.open {
            display: block;
        }