/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.6);
            --bg-glass: rgba(13, 17, 30, 0.55);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-gradient: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --accent-glow: rgba(0, 240, 255, 0.35);
            --accent-blue-glow: rgba(0, 82, 255, 0.45);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glass: rgba(0, 240, 255, 0.18);
            --border-electric: rgba(0, 82, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.25), 0 0 40px rgba(0, 82, 255, 0.2);
            --shadow-glow-hover: 0 0 30px rgba(0, 240, 255, 0.4), 0 0 60px rgba(0, 82, 255, 0.35);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Be Vietnam Pro', sans-serif;
            --container-max: 1200px;
            --section-padding: 72px;
            --navbar-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

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

        ::selection {
            background: var(--accent-cyan);
            color: var(--bg-primary);
        }

        /* Container */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            height: var(--navbar-height);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.92);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-white);
            white-space: nowrap;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }

        .navbar-brand .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 1.2rem;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.35);
        }

        .navbar-brand span {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .navbar-nav li {
            position: relative;
        }

        .navbar-nav a {
            display: block;
            padding: 8px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .navbar-nav a:hover,
        .navbar-nav a:focus-visible {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }

        .navbar-nav a.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }

        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }

        .btn-solid {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-white);
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-base);
            white-space: nowrap;
            border: none;
        }

        .btn-solid:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 240, 255, 0.45);
        }

        .btn-solid:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(0, 82, 255, 0.35);
        }

        .navbar-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: transparent;
            border: none;
            padding: 6px;
            cursor: pointer;
            flex-shrink: 0;
        }

        .navbar-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .navbar-toggle.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .navbar-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .navbar-toggle.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            padding-top: calc(var(--navbar-height) + 40px);
            padding-bottom: 60px;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.75) 0%, rgba(8, 9, 15, 0.85) 50%, rgba(8, 9, 15, 0.95) 100%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 30% 40%, rgba(0, 82, 255, 0.18) 0%, transparent 55%);
            z-index: 1;
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 22px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 100px;
            width: fit-content;
        }

        .hero-badge i {
            font-size: 0.65rem;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        .hero h1 {
            font-size: clamp(1.7rem, 4vw, 2.8rem);
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.015em;
            color: var(--text-white);
            margin: 0;
        }

        .hero h1 .highlight {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1rem;
            color: var(--text-silver);
            max-width: 540px;
            line-height: 1.7;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 6px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            font-size: 0.95rem;
            font-weight: 800;
            color: var(--text-white);
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-base);
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow-hover);
        }

        .btn-primary:active {
            transform: translateY(-1px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 24px;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-sm);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-base);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(0, 240, 255, 0.4);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 10px;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-value {
            font-size: 1.4rem;
            font-weight: 900;
            color: var(--accent-cyan);
            letter-spacing: -0.02em;
        }

        .hero-stat-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .hero-panel {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-electric);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .hero-panel-title {
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent-cyan);
        }

        .hero-panel-step {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-panel-step:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .hero-panel-step-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: rgba(0, 82, 255, 0.2);
            border: 1px solid rgba(0, 82, 255, 0.4);
            border-radius: 50%;
            color: var(--accent-cyan);
            font-size: 0.8rem;
            flex-shrink: 0;
        }

        .hero-panel-step-text {
            display: flex;
            flex-direction: column;
            gap: 3px;
        }

        .hero-panel-step-text strong {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .hero-panel-step-text span {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .hero-panel-download {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 6px;
        }

        .hero-panel-download-info {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-panel-download-info strong {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--accent-cyan);
        }

        .hero-panel-download-info span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* Section base */
        section {
            padding: var(--section-padding) 0;
        }

        .section-header {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 38px;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--accent-cyan);
        }

        .section-label::before {
            content: '';
            display: block;
            width: 24px;
            height: 2px;
            background: var(--accent-gradient);
            border-radius: 2px;
        }

        .section-title {
            font-size: clamp(1.4rem, 3vw, 2rem);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: var(--text-white);
        }

        .section-desc {
            font-size: 0.95rem;
            color: var(--text-silver);
            max-width: 620px;
            line-height: 1.7;
        }

        /* Feature Cards (vertical seeding) */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 14px;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent-gradient);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: var(--shadow-glow);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: rgba(0, 82, 255, 0.15);
            border: 1px solid rgba(0, 82, 255, 0.35);
            border-radius: var(--radius-sm);
            color: var(--accent-cyan);
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .feature-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.4;
        }

        .feature-card p {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.65;
        }

        /* Hot list */
        .hotlist-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 18px;
        }

        .hotlist-card {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            cursor: pointer;
            position: relative;
        }

        .hotlist-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: var(--shadow-glow);
        }

        .hotlist-card-img {
            height: 150px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .hotlist-card-img .tag {
            position: absolute;
            top: 10px;
            left: 10px;
            padding: 4px 12px;
            font-size: 0.65rem;
            font-weight: 800;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            border-radius: 100px;
            color: var(--text-white);
        }

        .tag-hot {
            background: #FF3B30;
            box-shadow: 0 2px 8px rgba(255, 59, 48, 0.4);
        }

        .tag-new {
            background: #34C759;
            box-shadow: 0 2px 8px rgba(52, 199, 89, 0.4);
        }

        .tag-best {
            background: var(--accent-gradient);
            box-shadow: 0 2px 8px rgba(0, 82, 255, 0.35);
        }

        .hotlist-card-body {
            padding: 16px 18px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .hotlist-card-body h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.4;
        }

        .hotlist-card-body p {
            font-size: 0.75rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .hotlist-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .hotlist-card-rating {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 0.75rem;
            color: #FFD700;
        }

        .hotlist-card-size {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* Track / horizontal scroll */
        .track-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .track-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding: 10px 0 20px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .track-scroll::-webkit-scrollbar {
            height: 4px;
        }

        .track-scroll::-webkit-scrollbar-track {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 2px;
        }

        .track-scroll::-webkit-scrollbar-thumb {
            background: var(--accent-blue);
            border-radius: 2px;
        }

        .track-item {
            flex: 0 0 260px;
            scroll-snap-align: start;
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            cursor: pointer;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-base);
        }

        .track-item:hover {
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .track-item-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .track-item-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(8, 9, 15, 0.9) 100%);
            display: flex;
            align-items: flex-end;
            padding: 16px;
            transition: all var(--transition-base);
        }

        .track-item-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.4;
            opacity: 0;
            transform: translateY(8px);
            transition: all var(--transition-base);
        }

        .track-item:hover .track-item-title {
            opacity: 1;
            transform: translateY(0);
        }

        .track-item-badge {
            position: absolute;
            top: 10px;
            right: 10px;
            padding: 4px 10px;
            font-size: 0.6rem;
            font-weight: 800;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            background: var(--accent-gradient);
            color: var(--text-white);
            border-radius: 100px;
        }

        /* Reviews */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .review-card {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .review-card:hover {
            border-color: rgba(0, 240, 255, 0.3);
            transform: translateY(-3px);
        }

        .review-stars {
            display: flex;
            gap: 3px;
            color: #FFD700;
            font-size: 0.8rem;
        }

        .review-text {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.7;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .review-avatar {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--accent-gradient);
            border-radius: 50%;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-white);
            flex-shrink: 0;
        }

        .review-author-info {
            display: flex;
            flex-direction: column;
            gap: 1px;
        }

        .review-author-info strong {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .review-author-info span {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* Stats / Data */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .stat-card:hover {
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: var(--shadow-glow);
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 900;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .stat-trend {
            font-size: 0.7rem;
            color: #34C759;
            font-weight: 600;
        }

        /* News / CMS */
        .news-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 32px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 18px;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            color: inherit;
        }

        .news-item:hover {
            border-color: rgba(0, 240, 255, 0.35);
            background: rgba(13, 17, 30, 0.8);
            transform: translateX(4px);
        }

        .news-item-main {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }

        .news-item-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.45;
        }

        .news-item-summary {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        .news-item-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        .news-item-category {
            padding: 3px 10px;
            font-size: 0.65rem;
            font-weight: 700;
            background: rgba(0, 82, 255, 0.18);
            color: var(--accent-cyan);
            border-radius: 100px;
            white-space: nowrap;
        }

        .news-item-date {
            white-space: nowrap;
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-sidebar-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-sidebar-card h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .news-sidebar-card p {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .news-empty {
            padding: 24px;
            background: var(--bg-glass);
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* Campaign */
        .campaign-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.12) 0%, rgba(0, 240, 255, 0.06) 50%, rgba(0, 82, 255, 0.12) 100%);
            border-top: 1px solid rgba(0, 82, 255, 0.2);
            border-bottom: 1px solid rgba(0, 82, 255, 0.2);
        }

        .campaign-banner {
            display: grid;
            grid-template-columns: 1fr 0.7fr;
            gap: 32px;
            align-items: center;
            background: var(--bg-glass);
            border: 1px solid var(--border-electric);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-glow);
            position: relative;
            overflow: hidden;
        }

        .campaign-banner::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .campaign-content {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .campaign-content .section-title {
            font-size: 1.4rem;
        }

        .campaign-content p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.7;
        }

        .campaign-perks {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 6px;
        }

        .campaign-perk {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 100px;
            white-space: nowrap;
        }

        .campaign-timer {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 700;
            color: #FF3B30;
        }

        .campaign-cta {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        /* CTA Download */
        .cta-download {
            text-align: left;
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-electric);
            border-radius: var(--radius-xl);
            padding: 48px;
            box-shadow: var(--shadow-glow);
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 32px;
            align-items: center;
        }

        .cta-download-content {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cta-download-content .section-title {
            font-size: 1.5rem;
        }

        .cta-download-content p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.7;
        }

        .cta-download-btn {
            display: inline-flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            padding: 22px 36px;
            background: var(--accent-gradient);
            border-radius: var(--radius-md);
            color: var(--text-white);
            font-weight: 800;
            font-size: 1.1rem;
            box-shadow: var(--shadow-glow-hover);
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .cta-download-btn:hover {
            transform: translateY(-4px);
            box-shadow: 0 0 45px rgba(0, 240, 255, 0.5), 0 0 80px rgba(0, 82, 255, 0.4);
        }

        .cta-download-btn small {
            font-size: 0.7rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
        }

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

        .faq-item {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            transition: all var(--transition-base);
            width: 100%;
            text-align: left;
        }

        .faq-question i {
            font-size: 0.8rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

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

        .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 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-brand .navbar-brand {
            font-size: 1rem;
        }

        .footer-brand p {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.65;
            max-width: 300px;
        }

        .footer-column {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-column h4 {
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .footer-column a {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: all var(--transition-base);
        }

        .footer-column a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .footer-bottom span {
            color: var(--text-muted);
        }

        .footer-bottom .domain {
            color: var(--text-silver);
            font-weight: 600;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid var(--accent-cyan);
            border-radius: 50%;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-base);
            cursor: pointer;
            color: var(--accent-cyan);
            font-size: 1.1rem;
            opacity: 0.65;
            animation: fab-pulse 3s ease-in-out infinite;
            min-width: 48px;
            min-height: 48px;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7), 0 0 50px rgba(0, 82, 255, 0.4);
            animation: none;
        }

        .fab:active {
            transform: scale(0.95);
        }

        .fab::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 12px;
            height: 12px;
            background: #FF3B30;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: fab-notification 2s infinite;
        }

        @keyframes fab-pulse {
            0%, 100% { opacity: 0.65; }
            50% { opacity: 0.85; }
        }

        @keyframes fab-notification {
            0%, 100% { background: #FF3B30; }
            50% { background: #FF6B6B; }
        }

        /* Focus styles for accessibility */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        /* Mobile menu */
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 24px;
            background: rgba(8, 9, 15, 0.96);
            border-bottom: 1px solid var(--border-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
        }

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

        .mobile-menu a {
            display: block;
            padding: 12px 8px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-silver);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: all var(--transition-base);
        }

        .mobile-menu a:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.06);
            padding-left: 14px;
        }

        .mobile-menu a.active {
            color: var(--accent-cyan);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-panel {
                max-width: 500px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .campaign-banner {
                grid-template-columns: 1fr;
                padding: 28px;
            }
            .cta-download {
                grid-template-columns: 1fr;
                padding: 32px;
            }
            .news-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding: 48px;
                --navbar-height: 64px;
            }
            .navbar-nav {
                display: none;
            }
            .navbar-toggle {
                display: flex;
            }
            .mobile-menu {
                display: flex;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
                padding: 0 24px;
            }
            .mobile-menu.open {
                max-height: 400px;
                padding: 12px 24px;
            }
            .hero {
                min-height: 70vh;
                padding-top: calc(var(--navbar-height) + 24px);
                padding-bottom: 40px;
            }
            .hero h1 {
                font-size: 1.4rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat-value {
                font-size: 1.15rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hotlist-grid {
                grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
                gap: 12px;
            }
            .hotlist-card-img {
                height: 110px;
            }
            .track-item {
                flex: 0 0 220px;
            }
            .track-item-img {
                height: 140px;
            }
            .review-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .campaign-banner {
                padding: 20px;
            }
            .cta-download {
                padding: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
            .fab {
                width: 48px;
                height: 48px;
                font-size: 1rem;
                left: 12px;
                bottom: 80px;
            }
            .navbar-actions .btn-link {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .hero h1 {
                font-size: 1.2rem;
            }
            .hero-desc {
                font-size: 0.82rem;
                line-height: 1.6;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 10px;
                width: 100%;
            }
            .btn-primary,
            .btn-secondary {
                justify-content: center;
                width: 100%;
            }
            .hero-panel {
                padding: 18px;
            }
            .section-title {
                font-size: 1.2rem;
            }
            .section-desc {
                font-size: 0.82rem;
            }
            .feature-card {
                padding: 18px 16px;
            }
            .hotlist-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hotlist-card-img {
                height: 90px;
            }
            .hotlist-card-body h4 {
                font-size: 0.8rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-number {
                font-size: 1.3rem;
            }
            .news-item {
                flex-direction: column;
                gap: 8px;
                padding: 12px 14px;
            }
            .campaign-banner {
                padding: 16px;
            }
            .cta-download {
                padding: 18px;
            }
            .cta-download-btn {
                padding: 16px 24px;
                font-size: 0.95rem;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.82rem;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
            .track-item {
                flex: 0 0 180px;
            }
            .track-item-img {
                height: 120px;
            }
            .navbar-brand {
                font-size: 0.95rem;
            }
            .navbar-brand .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.6);
            --bg-glass: rgba(13, 17, 30, 0.55);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-gradient: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --accent-glow: rgba(0, 240, 255, 0.35);
            --accent-blue-glow: rgba(0, 82, 255, 0.45);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glass: rgba(0, 240, 255, 0.18);
            --border-electric: rgba(0, 82, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.25), 0 0 40px rgba(0, 82, 255, 0.2);
            --shadow-glow-hover: 0 0 30px rgba(0, 240, 255, 0.4), 0 0 60px rgba(0, 82, 255, 0.35);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Be Vietnam Pro', sans-serif;
            --container-max: 1200px;
            --section-padding: 48px;
            --navbar-height: 64px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: var(--navbar-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base), background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            color: inherit;
        }
        input,
        textarea {
            font-family: var(--font-family);
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            height: var(--navbar-height);
        }
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.92);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 20px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-white);
            white-space: nowrap;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }
        .navbar-brand .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 1.1rem;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.35);
        }
        .navbar-brand span {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }
        .navbar-nav a {
            display: block;
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .navbar-nav a:hover,
        .navbar-nav a:focus-visible {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }
        .navbar-nav a.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }
        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .btn-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 12px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-solid {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--text-white);
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
        }
        .btn-solid:hover {
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
        }
        .btn-solid:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(0, 82, 255, 0.3);
        }
        .navbar-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
            transition: background var(--transition-base);
            width: 46px;
            height: 46px;
            align-items: center;
            justify-content: center;
        }
        .navbar-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .navbar-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
            width: 46px;
            height: 46px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-glass);
        }
        .navbar-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .navbar-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .navbar-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .navbar-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 24px 0 0;
            background: transparent;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-silver);
            transition: color var(--transition-base);
        }
        .breadcrumb a:hover {
            color: var(--text-white);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            opacity: 0.6;
        }
        .breadcrumb .current {
            color: var(--accent-cyan);
            font-weight: 500;
        }

        /* Article Hero */
        .article-hero {
            padding: 22px 0 20px;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.08) 0%, transparent 100%);
            border-bottom: 1px solid var(--border-glass);
        }
        .article-hero-inner {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .article-meta .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            background: rgba(0, 82, 255, 0.15);
            color: var(--accent-cyan);
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.72rem;
            letter-spacing: 0.03em;
            border: 1px solid rgba(0, 82, 255, 0.25);
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i {
            color: var(--accent-cyan);
            font-size: 0.75rem;
        }
        .article-hero h1 {
            font-size: 1.9rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-white);
            letter-spacing: -0.02em;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-hero .article-excerpt {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 820px;
        }

        /* Article Body */
        .article-body {
            padding: 30px 0 48px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 40px;
            align-items: start;
        }
        .article-content {
            min-width: 0;
        }
        .article-content .cms-body {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.75;
        }
        .article-content .cms-body h2 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 32px 0 12px;
            letter-spacing: -0.01em;
        }
        .article-content .cms-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 24px 0 10px;
        }
        .article-content .cms-body p {
            margin: 0 0 14px;
        }
        .article-content .cms-body ul,
        .article-content .cms-body ol {
            margin: 0 0 16px 20px;
            padding: 0;
            list-style: disc;
        }
        .article-content .cms-body ol {
            list-style: decimal;
        }
        .article-content .cms-body li {
            margin-bottom: 6px;
        }
        .article-content .cms-body img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-card);
        }
        .article-content .cms-body a {
            color: var(--accent-cyan);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content .cms-body a:hover {
            color: var(--text-white);
        }
        .article-not-found {
            padding: 30px;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            text-align: left;
        }
        .article-not-found p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 14px;
        }
        .article-not-found a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--accent-gradient);
            color: var(--text-white);
            font-weight: 700;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            transition: all var(--transition-base);
        }
        .article-not-found a:hover {
            box-shadow: var(--shadow-glow);
        }

        /* Article Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: sticky;
            top: calc(var(--navbar-height) + 20px);
        }
        .sidebar-box {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px;
            backdrop-filter: blur(10px);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .sidebar-box:hover {
            border-color: var(--border-electric);
            box-shadow: var(--shadow-glow);
        }
        .sidebar-box h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.01em;
        }
        .sidebar-box h3 i {
            color: var(--accent-cyan);
            font-size: 0.9rem;
        }
        .param-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.78rem;
            color: var(--text-silver);
        }
        .param-table th,
        .param-table td {
            text-align: left;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .param-table th {
            color: var(--text-muted);
            font-weight: 500;
            width: 45%;
            white-space: nowrap;
        }
        .param-table td {
            color: var(--text-white);
            font-weight: 500;
            word-break: break-word;
        }
        .side-download-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            width: 100%;
            padding: 13px 18px;
            background: var(--accent-gradient);
            color: var(--text-white);
            font-weight: 700;
            font-size: 0.88rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
        }
        .side-download-btn:hover {
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
        }
        .side-download-btn:active {
            transform: translateY(0);
        }
        .side-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 10px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 20px;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--accent-cyan);
            white-space: nowrap;
        }
        .trust-badge i {
            font-size: 0.65rem;
        }

        /* Screenshot Carousel */
        .screenshot-section {
            padding: 36px 0 48px;
            border-top: 1px solid var(--border-glass);
            background: var(--bg-secondary);
        }
        .section-heading {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }
        .section-heading h2 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.01em;
        }
        .section-heading .line {
            flex: 1;
            height: 1px;
            background: linear-gradient(90deg, var(--border-electric), transparent);
        }
        .carousel-wrap {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
        }
        .carousel-track {
            display: flex;
            transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .carousel-slide {
            min-width: 100%;
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .carousel-slide img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .carousel-slide .slide-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            padding: 20px 22px;
            background: linear-gradient(0deg, rgba(8, 9, 15, 0.9) 0%, transparent 100%);
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 12px;
        }
        .slide-overlay span {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-white);
        }
        .btn-carousel {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: rgba(8, 9, 15, 0.7);
            border: 1px solid var(--border-glass);
            color: var(--text-white);
            border-radius: 50%;
            font-size: 0.85rem;
            transition: all var(--transition-base);
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            z-index: 10;
            backdrop-filter: blur(8px);
        }
        .btn-carousel:hover {
            background: rgba(0, 82, 255, 0.5);
            border-color: var(--border-electric);
            box-shadow: var(--shadow-glow);
        }
        .btn-prev {
            left: 12px;
        }
        .btn-next {
            right: 12px;
        }
        .carousel-dots {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 14px;
        }
        .carousel-dots button {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
            transition: all var(--transition-base);
        }
        .carousel-dots button.active {
            background: var(--accent-cyan);
            box-shadow: 0 0 10px var(--accent-glow);
            width: 26px;
            border-radius: 6px;
        }

        /* Download Bar */
        .download-bar-section {
            padding: 36px 0 48px;
            border-top: 1px solid var(--border-glass);
        }
        .download-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 22px;
            padding: 24px 28px;
            background: var(--bg-card);
            border: 1px solid var(--border-electric);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-glow);
            flex-wrap: wrap;
        }
        .download-bar .dl-info {
            display: flex;
            align-items: center;
            gap: 16px;
            flex: 1;
            min-width: 220px;
        }
        .dl-info .dl-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--accent-gradient);
            border-radius: var(--radius-md);
            color: var(--text-white);
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.4);
            flex-shrink: 0;
        }
        .dl-info .dl-text h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 3px;
        }
        .dl-info .dl-text p {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .dl-metrics {
            display: flex;
            gap: 22px;
            flex-wrap: wrap;
        }
        .dl-metric {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .dl-metric .metric-value {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-white);
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .dl-metric .metric-label {
            font-size: 0.72rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .btn-download-lg {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            background: var(--accent-gradient);
            color: var(--text-white);
            font-weight: 800;
            font-size: 0.9rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            box-shadow: 0 4px 20px rgba(0, 82, 255, 0.45);
            white-space: nowrap;
        }
        .btn-download-lg:hover {
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-3px);
        }
        .btn-download-lg:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(0, 82, 255, 0.35);
        }

        /* FAQ */
        .faq-section {
            padding: 36px 0 48px;
            border-top: 1px solid var(--border-glass);
            background: var(--bg-secondary);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 820px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--border-electric);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-white);
            background: transparent;
            transition: background var(--transition-base);
        }
        .faq-question:hover {
            background: rgba(0, 240, 255, 0.04);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 50%;
            color: var(--accent-cyan);
            font-size: 0.7rem;
            transition: all var(--transition-base);
        }
        .faq-item.open .faq-icon {
            background: var(--accent-gradient);
            color: var(--text-white);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer p {
            padding: 0 20px 16px;
            font-size: 0.82rem;
            color: var(--text-silver);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            padding: 36px 0 60px;
            border-top: 1px solid var(--border-glass);
        }
        .cta-panel {
            background: var(--accent-gradient);
            border-radius: var(--radius-xl);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 22px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-glow);
        }
        .cta-panel .cta-text h2 {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }
        .cta-panel .cta-text p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.85);
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 13px 28px;
            background: var(--text-white);
            color: var(--bg-primary);
            font-weight: 800;
            font-size: 0.88rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.3);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.4);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-glass);
            padding: 40px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 28px;
            margin-bottom: 28px;
        }
        .footer-brand p {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-brand .navbar-brand {
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
        .footer-column h4 {
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-column a {
            display: block;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            transition: color var(--transition-base);
        }
        .footer-column a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 18px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.72rem;
            color: var(--text-muted);
        }
        .footer-bottom .domain {
            color: var(--text-muted);
            font-weight: 500;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 54px;
            height: 54px;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.7), rgba(8, 9, 15, 0.7)), linear-gradient(135deg, #00F0FF, #0052FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            border-radius: 50%;
            color: var(--text-white);
            font-size: 1.2rem;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
            opacity: 0.7;
            animation: fabPulse 2.5s ease-in-out infinite;
        }
        @keyframes fabPulse {
            0%, 100% { opacity: 0.7; box-shadow: 0 0 15px rgba(0, 240, 255, 0.35); }
            50% { opacity: 1; box-shadow: 0 0 28px rgba(0, 240, 255, 0.6); }
        }
        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.65);
        }
        .fab:active {
            transform: scale(0.95);
        }
        .fab .fab-dot {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: fabDotBlink 1.2s ease-in-out infinite;
        }
        @keyframes fabDotBlink {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.8); }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .sidebar-box {
                flex: 1;
                min-width: 220px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .navbar-nav {
                gap: 0;
            }
            .navbar-nav a {
                padding: 8px 10px;
                font-size: 0.75rem;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
            .navbar {
                gap: 10px;
            }
            .navbar-nav {
                position: fixed;
                top: var(--navbar-height);
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 6px;
                border-bottom: 1px solid var(--border-glass);
                transform: translateY(-110%);
                transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                max-height: calc(100vh - var(--navbar-height));
                overflow-y: auto;
                z-index: 998;
            }
            .navbar-nav.open {
                transform: translateY(0);
            }
            .navbar-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 0.85rem;
            }
            .navbar-toggle {
                display: flex;
            }
            .navbar-actions .btn-link {
                display: none;
            }
            .btn-solid {
                padding: 8px 14px;
                font-size: 0.75rem;
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-meta {
                gap: 8px;
                font-size: 0.72rem;
            }
            .download-bar {
                padding: 18px 16px;
                flex-direction: column;
                align-items: flex-start;
            }
            .dl-metrics {
                gap: 14px;
                width: 100%;
                justify-content: space-between;
            }
            .btn-download-lg {
                width: 100%;
                justify-content: center;
                padding: 13px 18px;
                font-size: 0.82rem;
            }
            .cta-panel {
                padding: 24px 18px;
                flex-direction: column;
                align-items: flex-start;
            }
            .btn-white {
                width: 100%;
                justify-content: center;
            }
            .carousel-slide {
                aspect-ratio: 4/3;
            }
            .carousel-slide .slide-overlay {
                padding: 14px 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .fab {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1rem;
            }
            .article-sidebar {
                flex-direction: column;
            }
            .sidebar-box {
                min-width: unset;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .navbar-brand {
                font-size: 0.88rem;
            }
            .navbar-brand .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }
            .btn-solid {
                padding: 7px 10px;
                font-size: 0.7rem;
                gap: 5px;
            }
            .article-hero h1 {
                font-size: 1.2rem;
            }
            .dl-metrics {
                flex-wrap: wrap;
                gap: 10px;
            }
            .dl-metric .metric-value {
                font-size: 0.95rem;
            }
            .section-heading h2 {
                font-size: 1.05rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.6);
            --bg-glass: rgba(13, 17, 30, 0.55);
            --bg-glass-light: rgba(20, 26, 46, 0.7);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-gradient: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --accent-glow: rgba(0, 240, 255, 0.35);
            --accent-blue-glow: rgba(0, 82, 255, 0.45);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glass: rgba(0, 240, 255, 0.18);
            --border-electric: rgba(0, 82, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.25), 0 0 40px rgba(0, 82, 255, 0.2);
            --shadow-glow-hover: 0 0 30px rgba(0, 240, 255, 0.4), 0 0 60px rgba(0, 82, 255, 0.35);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Be Vietnam Pro', sans-serif;
            --container-max: 1200px;
            --section-padding: 72px;
            --navbar-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base), background var(--transition-base), box-shadow var(--transition-base);
        }
        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            color: inherit;
        }
        input, textarea, select {
            font-family: var(--font-family);
            font-size: inherit;
            color: inherit;
        }
        ul, ol {
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }
        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            height: var(--navbar-height);
        }
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.92);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-white);
            white-space: nowrap;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }
        .navbar-brand .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 1.2rem;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.35);
            flex-shrink: 0;
        }
        .navbar-brand > span:last-child {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }
        .navbar-nav li {
            position: relative;
        }
        .navbar-nav a {
            display: block;
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .navbar-nav a:hover,
        .navbar-nav a:focus-visible {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }
        .navbar-nav a.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }
        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .btn-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 12px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-solid {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-white);
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-solid:hover {
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .btn-solid:active {
            transform: translateY(1px) scale(0.97);
            box-shadow: 0 4px 12px rgba(0, 82, 255, 0.3);
        }
        .btn-solid:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }
        .navbar-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-glass);
            background: rgba(255, 255, 255, 0.04);
            transition: all var(--transition-base);
            flex-shrink: 0;
        }
        .navbar-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-silver);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .navbar-toggle:hover {
            border-color: var(--accent-cyan);
        }
        .navbar-toggle:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }
        .navbar-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .navbar-toggle.open span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .navbar-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* Hero section */
        .hero-cat {
            position: relative;
            padding: calc(var(--navbar-height) + 48px) 0 48px 0;
            background: var(--bg-primary);
            overflow: hidden;
        }
        .hero-cat::before {
            content: '';
            position: absolute;
            top: 0;
            right: -20%;
            width: 60%;
            height: 100%;
            background: radial-gradient(ellipse at center, rgba(0, 82, 255, 0.15) 0%, transparent 65%);
            pointer-events: none;
            z-index: 0;
        }
        .hero-cat::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 50%;
            height: 70%;
            background: radial-gradient(ellipse at center, rgba(0, 240, 255, 0.08) 0%, transparent 60%);
            pointer-events: none;
            z-index: 0;
        }
        .hero-cat .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb-top {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 28px;
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-top a {
            color: var(--accent-cyan);
            font-weight: 500;
            transition: color var(--transition-base);
        }
        .breadcrumb-top a:hover {
            color: var(--text-white);
        }
        .breadcrumb-top .sep {
            color: var(--text-muted);
            opacity: 0.6;
        }
        .breadcrumb-top .current {
            color: var(--text-silver);
            font-weight: 500;
        }
        .hero-cat-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-cat-content {
            max-width: 560px;
        }
        .hero-cat-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .hero-cat-tag .dot {
            width: 6px;
            height: 6px;
            background: var(--accent-cyan);
            border-radius: 50%;
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.8); }
        }
        .hero-cat-content h1 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 900;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .hero-cat-content h1 .gradient-text {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-cat-content .lead {
            font-size: 1rem;
            color: var(--text-silver);
            margin-bottom: 28px;
            max-width: 480px;
            line-height: 1.7;
        }
        .hero-cat-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 28px;
        }
        .hero-cat-stat {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .hero-cat-stat i {
            font-size: 1.2rem;
            color: var(--accent-cyan);
        }
        .hero-cat-stat span {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .hero-cat-stat strong {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-white);
        }
        .hero-cat-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            font-weight: 700;
            letter-spacing: 0.01em;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 24px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-silver);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-ghost:hover {
            color: var(--text-white);
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }
        .hero-cat-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 360px;
        }
        .progress-ring-wrap {
            position: relative;
            width: 260px;
            height: 260px;
        }
        .progress-ring-wrap svg {
            width: 100%;
            height: 100%;
            transform: rotate(-90deg);
        }
        .progress-ring-wrap .ring-bg {
            fill: none;
            stroke: rgba(255, 255, 255, 0.06);
            stroke-width: 10;
        }
        .progress-ring-wrap .ring-fg {
            fill: none;
            stroke: url(#ringGradient);
            stroke-width: 10;
            stroke-linecap: round;
            stroke-dasharray: 628.32;
            stroke-dashoffset: 0;
            transition: stroke-dashoffset 1.5s ease-in-out;
        }
        .progress-ring-center {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }
        .progress-ring-center .value {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1;
            letter-spacing: -0.03em;
        }
        .progress-ring-center .label {
            font-size: 0.72rem;
            color: var(--text-muted);
            font-weight: 600;
            margin-top: 6px;
            letter-spacing: 0.04em;
        }
        .hero-cat-visual .decorative-badge {
            position: absolute;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-silver);
            white-space: nowrap;
            animation: float-badge 6s ease-in-out infinite;
        }
        .hero-cat-visual .decorative-badge i {
            color: var(--accent-cyan);
            font-size: 1rem;
        }
        .hero-cat-visual .badge-1 {
            top: 8%;
            right: 4%;
            animation-delay: 0s;
        }
        .hero-cat-visual .badge-2 {
            bottom: 10%;
            left: 2%;
            animation-delay: 2s;
        }
        .hero-cat-visual .badge-3 {
            top: 45%;
            left: -2%;
            animation-delay: 4s;
        }
        @keyframes float-badge {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }
        /* Section base */
        .section-block {
            padding: var(--section-padding) 0;
            position: relative;
        }
        .section-block.alt-bg {
            background: var(--bg-secondary);
        }
        .section-heading {
            margin-bottom: 36px;
        }
        .section-heading h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }
        .section-heading p {
            font-size: 0.92rem;
            color: var(--text-muted);
            max-width: 560px;
            line-height: 1.65;
        }
        /* Metrics Dashboard */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .metric-card {
            position: relative;
            padding: 24px 20px;
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent-gradient);
            opacity: 0.6;
        }
        .metric-card:hover {
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .metric-card .icon-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            color: var(--accent-cyan);
            font-size: 1.2rem;
        }
        .metric-card .metric-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 4px;
        }
        .metric-card .metric-label {
            font-size: 0.78rem;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.01em;
        }
        .metric-card .metric-desc {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 8px;
            line-height: 1.5;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 8px;
        }
        /* Service Matrix */
        .service-matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .service-card {
            position: relative;
            padding: 28px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .service-card:hover {
            border-color: var(--border-electric);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-6px);
        }
        .service-card .service-step {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--accent-cyan);
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }
        .service-card .service-step i {
            font-size: 0.8rem;
        }
        .service-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.35;
        }
        .service-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.65;
            flex-grow: 1;
        }
        .service-card .service-list {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-top: 4px;
        }
        .service-card .service-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            color: var(--text-silver);
            font-weight: 500;
        }
        .service-card .service-list li i {
            color: var(--accent-cyan);
            font-size: 0.7rem;
        }
        .service-card .card-img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 4px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        /* Comparison Section */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .comparison-card {
            padding: 28px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }
        .comparison-card.featured {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
            position: relative;
        }
        .comparison-card.featured::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent-gradient);
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .comparison-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comparison-card h3 i {
            color: var(--accent-cyan);
        }
        .comparison-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.5;
        }
        .comparison-list li i {
            margin-top: 3px;
            flex-shrink: 0;
        }
        .comparison-list li i.fa-circle-check {
            color: #2ecc71;
        }
        .comparison-list li i.fa-circle-xmark {
            color: #e74c3c;
        }
        .comparison-list li i.fa-minus-circle {
            color: var(--text-muted);
        }
        .comparison-card .note {
            margin-top: 16px;
            padding: 12px 14px;
            background: rgba(0, 240, 255, 0.05);
            border-radius: var(--radius-sm);
            border-left: 2px solid var(--accent-cyan);
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        /* FAQ */
        .faq-wrapper {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
        }
        .faq-item.active {
            border-color: var(--border-electric);
            box-shadow: var(--shadow-glow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-white);
            gap: 12px;
            transition: all var(--transition-base);
            text-align: left;
            width: 100%;
            background: none;
            border: none;
        }
        .faq-question:hover {
            background: rgba(0, 240, 255, 0.04);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 50%;
            color: var(--accent-cyan);
            font-size: 0.85rem;
            transition: all var(--transition-base);
        }
        .faq-item.active .faq-question .faq-icon {
            background: var(--accent-gradient);
            color: var(--text-white);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px 20px;
        }
        .faq-answer p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .faq-answer ol {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-top: 8px;
        }
        .faq-answer ol li {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .faq-answer ol li::before {
            content: '•';
            color: var(--accent-cyan);
            font-weight: 700;
        }
        /* CTA Form */
        .cta-section {
            position: relative;
            padding: var(--section-padding) 0;
            background: var(--bg-secondary);
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: var(--accent-gradient);
            opacity: 0.3;
        }
        .cta-card {
            position: relative;
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            padding: 40px 32px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
            overflow: hidden;
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 60%;
            height: 200%;
            background: radial-gradient(ellipse at center, rgba(0, 82, 255, 0.12) 0%, transparent 65%);
            pointer-events: none;
        }
        .cta-card-info h2 {
            font-size: clamp(1.4rem, 2.5vw, 1.8rem);
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .cta-card-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 20px;
        }
        .cta-card-info .cta-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .cta-card-info .cta-trust span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            color: var(--text-silver);
            font-weight: 500;
        }
        .cta-card-info .cta-trust span i {
            color: var(--accent-cyan);
        }
        .cta-form {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .form-group label {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-silver);
        }
        .form-control {
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 0.88rem;
            transition: all var(--transition-base);
            outline: none;
            width: 100%;
        }
        .form-control:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
        }
        .form-control::placeholder {
            color: var(--text-muted);
        }
        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2300F0FF' stroke-width='2' fill='none'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            cursor: pointer;
        }
        select.form-control option {
            background: var(--bg-secondary);
            color: var(--text-white);
        }
        .btn-submit {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 24px;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            background: var(--accent-gradient);
            border-radius: var(--radius-md);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
            letter-spacing: 0.01em;
        }
        .btn-submit:hover {
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
        }
        .btn-submit:active {
            transform: translateY(1px) scale(0.97);
        }
        .form-note {
            font-size: 0.72rem;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.5;
        }
        /* Footer */
        .site-footer {
            background: #060710;
            border-top: 1px solid var(--border-glass);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand .navbar-brand {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.65;
            max-width: 360px;
        }
        .footer-column h4 {
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-column a {
            display: block;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: color var(--transition-base);
        }
        .footer-column a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .footer-bottom .domain {
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: center;
        }
        .fab-main {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box, border-box;
            background-origin: padding-box, border-box;
            background-image: linear-gradient(135deg, rgba(13, 17, 30, 0.85), rgba(13, 17, 30, 0.85)), linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-base);
            animation: fab-breathe 2.5s ease-in-out infinite;
            cursor: pointer;
            font-size: 1.3rem;
            color: var(--accent-cyan);
            opacity: 0.7;
        }
        .fab-main:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7), 0 0 50px rgba(0, 82, 255, 0.4);
            animation-play-state: paused;
        }
        .fab-main:active {
            transform: scale(0.94);
        }
        .fab-main .notification-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 12px;
            height: 12px;
            background: #ff006e;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: pulse-dot 1.5s ease-in-out infinite;
        }
        .fab-tooltip {
            position: absolute;
            left: 64px;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(13, 17, 30, 0.9);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--text-silver);
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: all var(--transition-base);
        }
        .fab-main:hover .fab-tooltip {
            opacity: 1;
            left: 70px;
        }
        @keyframes fab-breathe {
            0%, 100% { opacity: 0.65; transform: scale(1); }
            50% { opacity: 0.85; transform: scale(1.05); }
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --section-padding: 56px;
            }
            .container {
                padding: 0 24px;
            }
            .hero-cat-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-cat-content {
                max-width: 100%;
            }
            .hero-cat-visual {
                min-height: auto;
                padding: 20px 0;
            }
            .progress-ring-wrap {
                width: 200px;
                height: 200px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .service-matrix-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .cta-card {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .navbar-nav {
                gap: 2px;
            }
            .navbar-nav a {
                padding: 8px 10px;
                font-size: 0.78rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-padding: 40px;
                --navbar-height: 60px;
            }
            .container {
                padding: 0 18px;
            }
            .navbar {
                gap: 14px;
            }
            .navbar-nav {
                position: fixed;
                top: var(--navbar-height);
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-glass);
                padding: 16px 18px;
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                z-index: 998;
            }
            .navbar-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .navbar-nav a {
                padding: 12px 16px;
                font-size: 0.88rem;
                border-radius: var(--radius-sm);
            }
            .navbar-toggle {
                display: flex;
            }
            .navbar-actions {
                gap: 6px;
            }
            .navbar-actions .btn-link {
                display: none;
            }
            .navbar-actions .btn-solid {
                padding: 8px 16px;
                font-size: 0.78rem;
            }
            .navbar-brand {
                font-size: 0.9rem;
            }
            .navbar-brand .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .metric-card {
                padding: 18px 14px;
            }
            .metric-card .metric-value {
                font-size: 1.3rem;
            }
            .service-matrix-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .cta-card {
                padding: 28px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .fab-left {
                left: 12px;
                bottom: 80px;
            }
            .fab-main {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
            .hero-cat {
                padding-top: calc(var(--navbar-height) + 32px);
                padding-bottom: 32px;
            }
            .hero-cat-content h1 {
                font-size: 1.6rem;
            }
            .hero-cat-visual .decorative-badge {
                display: none;
            }
            .progress-ring-wrap {
                width: 170px;
                height: 170px;
            }
            .progress-ring-center .value {
                font-size: 2rem;
            }
            .section-heading {
                margin-bottom: 24px;
            }
            .section-heading h2 {
                font-size: 1.35rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            :root {
                --section-padding: 32px;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .metric-card {
                padding: 14px 10px;
                border-radius: var(--radius-md);
            }
            .metric-card .metric-value {
                font-size: 1.1rem;
            }
            .metric-card .metric-label {
                font-size: 0.7rem;
            }
            .metric-card .icon-wrap {
                width: 36px;
                height: 36px;
                font-size: 1rem;
                margin-bottom: 8px;
            }
            .hero-cat-btns {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-lg, .btn-ghost {
                justify-content: center;
                width: 100%;
                text-align: center;
            }
            .navbar-actions .btn-solid {
                padding: 6px 12px;
                font-size: 0.72rem;
            }
            .navbar-brand {
                font-size: 0.78rem;
                gap: 8px;
            }
            .navbar-brand .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.85rem;
            }
            .cta-card {
                padding: 22px 16px;
                border-radius: var(--radius-lg);
            }
            .btn-submit {
                font-size: 0.85rem;
                padding: 12px 18px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.6);
            --bg-glass: rgba(13, 17, 30, 0.55);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-gradient: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --accent-glow: rgba(0, 240, 255, 0.35);
            --accent-blue-glow: rgba(0, 82, 255, 0.45);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glass: rgba(0, 240, 255, 0.18);
            --border-electric: rgba(0, 82, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.25), 0 0 40px rgba(0, 82, 255, 0.2);
            --shadow-glow-hover: 0 0 30px rgba(0, 240, 255, 0.4), 0 0 60px rgba(0, 82, 255, 0.35);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Be Vietnam Pro', sans-serif;
            --container-max: 1200px;
            --section-padding: 72px;
            --navbar-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            height: var(--navbar-height);
        }
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.92);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-white);
            white-space: nowrap;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }
        .navbar-brand .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 1.2rem;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.35);
        }
        .navbar-brand span {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .navbar-nav li {
            position: relative;
        }
        .navbar-nav a {
            display: block;
            padding: 8px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .navbar-nav a:hover,
        .navbar-nav a:focus-visible {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }
        .navbar-nav a.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }
        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-solid {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            background: var(--accent-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-base);
            white-space: nowrap;
            border: none;
        }
        .btn-solid:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.45);
            color: #fff;
        }
        .btn-solid:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }
        .navbar-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            padding: 8px;
            transition: all var(--transition-base);
        }
        .navbar-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--text-silver);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .navbar-toggle:hover {
            background: rgba(0, 240, 255, 0.1);
        }

        /* Page Hero */
        .page-hero {
            padding: calc(var(--navbar-height) + 56px) 0 48px;
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 30% 20%, rgba(0, 82, 255, 0.15) 0%, transparent 55%),
                        radial-gradient(ellipse at 70% 60%, rgba(0, 240, 255, 0.08) 0%, transparent 50%);
            pointer-events: none;
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--accent-cyan);
            font-weight: 500;
        }
        .breadcrumb-nav a:hover {
            color: var(--text-white);
        }
        .breadcrumb-nav i {
            font-size: 0.65rem;
            color: var(--text-muted);
        }
        .page-hero h1 {
            font-size: 2.5rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #FFFFFF 30%, #00F0FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 720px;
            line-height: 1.7;
        }

        /* Section Common */
        .section-padding {
            padding: var(--section-padding) 0;
        }
        .section-header {
            margin-bottom: 40px;
            text-align: left;
        }
        .section-header h2 {
            font-size: 1.75rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 10px;
            color: var(--text-white);
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 0.95rem;
            max-width: 640px;
            line-height: 1.7;
        }

        /* Stats Dashboard */
        .stats-dashboard {
            padding: 48px 0 24px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: left;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .stat-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            font-size: 1.2rem;
            margin-bottom: 14px;
        }
        .stat-number {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        /* Service Matrix */
        .service-matrix {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.03);
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
        }
        .service-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .service-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: all var(--transition-base);
            text-align: left;
        }
        .service-item:hover {
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: var(--shadow-glow);
        }
        .service-item .service-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--accent-gradient);
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 16px;
            box-shadow: 0 4px 12px rgba(0, 82, 255, 0.3);
        }
        .service-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-white);
        }
        .service-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            line-height: 1.65;
        }
        .service-item .btn-service {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.82rem;
            transition: all var(--transition-base);
        }
        .service-item .btn-service:hover {
            color: var(--text-white);
            gap: 10px;
        }

        /* Comparison Table */
        .comparison-section {
            background: var(--bg-primary);
        }
        .comparison-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glass);
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        .comparison-table th {
            background: rgba(0, 240, 255, 0.08);
            padding: 16px 20px;
            text-align: left;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-white);
            border-bottom: 1px solid var(--border-glass);
            white-space: nowrap;
        }
        .comparison-table td {
            padding: 16px 20px;
            font-size: 0.85rem;
            color: var(--text-silver);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            vertical-align: middle;
        }
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        .comparison-table .check-icon {
            color: #00E676;
            font-size: 1rem;
        }
        .comparison-table .x-icon {
            color: #FF5252;
            font-size: 1rem;
        }
        .comparison-table .highlight-cell {
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.03);
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
        }
        .faq-list {
            max-width: 800px;
        }
        .faq-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-white);
            transition: all var(--transition-base);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-question.active i {
            transform: rotate(180deg);
        }
        .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 22px;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0 22px 20px;
        }
        .faq-answer p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* CTA Form */
        .cta-form-section {
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
            padding: 64px 0 80px;
        }
        .cta-form-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 50% 50%, rgba(0, 82, 255, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-form-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-electric);
            border-radius: var(--radius-xl);
            padding: 40px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-glow);
            max-width: 720px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }
        .cta-form-card h2 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--text-white);
            letter-spacing: -0.01em;
        }
        .cta-form-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .cta-form .form-group {
            margin-bottom: 16px;
            text-align: left;
        }
        .cta-form label {
            display: block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-silver);
            margin-bottom: 6px;
        }
        .cta-form input,
        .cta-form textarea,
        .cta-form select {
            width: 100%;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 0.88rem;
            transition: all var(--transition-base);
            outline: none;
        }
        .cta-form input:focus,
        .cta-form textarea:focus,
        .cta-form select:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.15);
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: var(--text-muted);
        }
        .cta-form select option {
            background: var(--bg-secondary);
            color: var(--text-white);
        }
        .btn-submit {
            width: 100%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 24px;
            background: var(--accent-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.45);
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
        }
        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(0, 240, 255, 0.5);
        }
        .btn-submit:active {
            transform: translateY(0);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand .navbar-brand {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-column h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-column a {
            display: block;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            transition: all var(--transition-base);
        }
        .footer-column a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom .domain {
            color: var(--text-silver);
            font-weight: 500;
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-radius: 50%;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5), 0 4px 16px rgba(0, 0, 0, 0.5);
            cursor: pointer;
            opacity: 0.7;
            transition: all var(--transition-base);
            animation: fabBreathe 3s ease-in-out infinite;
        }
        .fab-support::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.7), 0 6px 24px rgba(0, 0, 0, 0.6);
        }
        .fab-support:active {
            transform: scale(0.95);
        }
        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #08090F;
            animation: fabBlink 1.5s ease-in-out infinite;
        }

        @keyframes fabBreathe {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 1; }
        }
        @keyframes fabBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --section-padding: 48px;
                --navbar-height: 64px;
            }
            .container {
                padding: 0 24px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding: 36px;
            }
            .container {
                padding: 0 18px;
            }
            .navbar-nav {
                position: fixed;
                top: var(--navbar-height);
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.97);
                backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-glass);
                display: none;
                z-index: 998;
            }
            .navbar-nav.open {
                display: flex;
            }
            .navbar-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 0.9rem;
            }
            .navbar-actions {
                display: flex;
            }
            .navbar-actions .btn-link {
                display: none;
            }
            .navbar-toggle {
                display: flex;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.9rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 18px;
            }
            .stat-number {
                font-size: 1.4rem;
            }
            .cta-form-card {
                padding: 24px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-form-card h2 {
                font-size: 1.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .page-hero {
                padding-top: calc(var(--navbar-height) + 32px);
            }
            .page-hero h1 {
                font-size: 1.35rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .service-item {
                padding: 20px;
            }
            .stat-card {
                padding: 16px;
            }
            .cta-form-card {
                padding: 20px 16px;
            }
            .btn-solid {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .navbar-brand {
                font-size: 0.95rem;
            }
            .navbar-brand .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.6);
            --bg-glass: rgba(13, 17, 30, 0.55);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-gradient: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --accent-glow: rgba(0, 240, 255, 0.35);
            --accent-blue-glow: rgba(0, 82, 255, 0.45);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glass: rgba(0, 240, 255, 0.18);
            --border-electric: rgba(0, 82, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.25), 0 0 40px rgba(0, 82, 255, 0.2);
            --shadow-glow-hover: 0 0 30px rgba(0, 240, 255, 0.4), 0 0 60px rgba(0, 82, 255, 0.35);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Be Vietnam Pro', sans-serif;
            --container-max: 1200px;
            --section-padding: 72px;
            --navbar-height: 72px;
        }
        @media (max-width: 768px) {
            :root {
                --section-padding: 48px;
                --navbar-height: 64px;
            }
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: var(--navbar-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-base);
        }
        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }
        input,
        textarea {
            font-family: var(--font-family);
            font-size: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-glass);
            transition: all var(--transition-base);
            height: var(--navbar-height);
        }
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.94);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-white);
            white-space: nowrap;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }
        .navbar-brand .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 1.2rem;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.35);
            flex-shrink: 0;
        }
        .navbar-brand span {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .navbar-nav li {
            position: relative;
        }
        .navbar-nav a {
            display: block;
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .navbar-nav a:hover,
        .navbar-nav a:focus-visible {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }
        .navbar-nav a.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }
        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-solid {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition-base);
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
        }
        .btn-solid:hover,
        .btn-solid:focus-visible {
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-solid:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(0, 82, 255, 0.3);
        }
        .navbar-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: transparent;
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            padding: 8px;
            transition: all var(--transition-base);
            flex-shrink: 0;
        }
        .navbar-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .navbar-toggle:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--accent-cyan);
        }
        .navbar-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .navbar-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .navbar-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* Mobile Nav */
        .mobile-nav-overlay {
            position: fixed;
            top: var(--navbar-height);
            left: 0;
            width: 100%;
            height: calc(100vh - var(--navbar-height));
            background: rgba(8, 9, 15, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            padding: 24px 16px;
            transform: translateX(-100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
            display: none;
        }
        .mobile-nav-overlay.open {
            transform: translateX(0);
        }
        .mobile-nav-overlay ul {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-nav-overlay a {
            display: block;
            padding: 14px 16px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-silver);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }
        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.1);
        }
        @media (max-width: 992px) {
            .navbar-nav {
                display: none;
            }
            .navbar-toggle {
                display: flex;
            }
            .mobile-nav-overlay {
                display: block;
            }
            .navbar-actions .btn-link {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .navbar-actions .btn-solid {
                padding: 8px 14px;
                font-size: 0.75rem;
            }
            .navbar-brand {
                font-size: 0.9rem;
                gap: 8px;
            }
            .navbar-brand .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
        }
        /* Section */
        .section {
            padding: var(--section-padding) 0;
        }
        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            margin-bottom: 14px;
            border: 1px solid var(--border-glass);
            border-radius: 50px;
            padding: 6px 14px;
            background: rgba(0, 240, 255, 0.06);
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        /* Hero */
        .hero-category {
            position: relative;
            padding: 64px 0 48px;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.08) 0%, rgba(8, 9, 15, 0) 100%);
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-category .container {
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-glass);
            border-radius: 50px;
            padding: 8px 16px;
            margin-bottom: 20px;
        }
        .hero-badge i {
            font-size: 0.7rem;
        }
        .hero-title {
            font-size: 2.1rem;
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: -0.03em;
            line-height: 1.25;
            margin-bottom: 16px;
            max-width: 720px;
        }
        .hero-title .highlight {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .hero-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }
        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: var(--accent-gradient);
            border-radius: var(--radius-md);
            border: none;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow);
            white-space: nowrap;
        }
        .btn-primary-glow:hover,
        .btn-primary-glow:focus-visible {
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-3px);
            color: #fff;
        }
        .btn-primary-glow:active {
            transform: translateY(0);
        }
        .btn-ghost-glow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 26px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            background: transparent;
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-ghost-glow:hover,
        .btn-ghost-glow:focus-visible {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.15);
            color: #fff;
        }
        /* Hero version highlight card */
        .hero-version-card {
            position: relative;
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
        }
        .hero-version-card.recommended {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
            background: rgba(13, 17, 30, 0.8);
        }
        .hero-version-card .version-cover {
            width: 90px;
            height: 90px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            border: 1px solid var(--border-glass);
        }
        .hero-version-card .version-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-version-card .version-info {
            flex: 1;
            min-width: 0;
        }
        .hero-version-card .version-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.68rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            padding: 3px 10px;
            border-radius: 50px;
            margin-bottom: 8px;
        }
        .hero-version-card .version-tag.hot {
            color: #FF6B6B;
            background: rgba(255, 107, 107, 0.12);
            border: 1px solid rgba(255, 107, 107, 0.3);
        }
        .hero-version-card .version-tag.best {
            color: #FFD700;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid rgba(255, 215, 0, 0.3);
        }
        .hero-version-card .version-name {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 4px;
            letter-spacing: -0.01em;
        }
        .hero-version-card .version-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 10px;
        }
        .hero-version-card .version-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-silver);
        }
        .hero-version-card .version-meta i {
            color: var(--accent-cyan);
            margin-right: 4px;
        }
        .hero-version-card .btn-download-now {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            font-size: 0.82rem;
            font-weight: 700;
            color: #fff;
            background: var(--accent-gradient);
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition-base);
            white-space: nowrap;
            margin-top: 4px;
            align-self: center;
            flex-shrink: 0;
        }
        .hero-version-card .btn-download-now:hover {
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
            color: #fff;
        }
        @media (max-width: 768px) {
            .hero-category {
                padding: 40px 0 36px;
            }
            .hero-title {
                font-size: 1.55rem;
            }
            .hero-subtitle {
                font-size: 0.92rem;
            }
            .hero-version-card {
                flex-direction: column;
                padding: 18px;
            }
            .hero-version-card .version-cover {
                width: 64px;
                height: 64px;
            }
            .hero-version-card .btn-download-now {
                align-self: flex-start;
                margin-top: 8px;
            }
            .section-title {
                font-size: 1.4rem;
            }
        }
        /* Stats Panel */
        .stats-panel {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 36px;
        }
        .stat-card {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            text-align: left;
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: 0 4px 18px rgba(0, 240, 255, 0.1);
        }
        .stat-number {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-number i {
            font-size: 1.1rem;
            color: var(--accent-cyan);
            margin-right: 6px;
        }
        .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        @media (max-width: 992px) {
            .stats-panel {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .stats-panel {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 14px;
            }
            .stat-number {
                font-size: 1.3rem;
            }
        }
        /* Service Matrix */
        .matrix-table {
            width: 100%;
            border-collapse: collapse;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            margin-bottom: 8px;
        }
        .matrix-table th,
        .matrix-table td {
            padding: 16px 18px;
            font-size: 0.85rem;
            color: var(--text-silver);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
            text-align: left;
            vertical-align: middle;
        }
        .matrix-table th {
            background: rgba(8, 9, 15, 0.7);
            font-weight: 700;
            color: var(--text-white);
            font-size: 0.82rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            border-bottom: 1px solid var(--border-glass);
        }
        .matrix-table tr:last-child td {
            border-bottom: none;
        }
        .matrix-table td:first-child {
            font-weight: 700;
            color: var(--text-white);
            white-space: nowrap;
        }
        .matrix-table .check-icon {
            color: var(--accent-cyan);
            font-size: 0.9rem;
        }
        .matrix-table .times-icon {
            color: #FF6B6B;
            font-size: 0.9rem;
        }
        .matrix-table .highlight-col {
            background: rgba(0, 240, 255, 0.05);
            border-left: 1px solid var(--border-glass);
            border-right: 1px solid var(--border-glass);
            position: relative;
        }
        .matrix-table .highlight-col::before {
            content: 'TỐT NHẤT';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 0.6rem;
            font-weight: 800;
            letter-spacing: 0.08em;
            color: #08090F;
            background: var(--accent-gradient);
            padding: 3px 12px;
            border-radius: 50px;
            white-space: nowrap;
        }
        .matrix-table .highlight-col th {
            color: var(--accent-cyan);
        }
        @media (max-width: 768px) {
            .matrix-table {
                display: block;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .matrix-table th,
            .matrix-table td {
                padding: 12px 14px;
                font-size: 0.78rem;
                white-space: nowrap;
            }
        }
        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            counter-reset: step-counter;
        }
        .step-card {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            position: relative;
            transition: all var(--transition-base);
        }
        .step-card:hover {
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: 0 4px 18px rgba(0, 240, 255, 0.1);
            transform: translateY(-3px);
        }
        .step-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            font-size: 0.85rem;
            font-weight: 800;
            color: #fff;
            background: var(--accent-gradient);
            border-radius: 50%;
            margin-bottom: 12px;
            box-shadow: 0 4px 12px rgba(0, 82, 255, 0.35);
        }
        .step-card .step-title {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }
        .step-card .step-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }
        @media (max-width: 992px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }
        /* Comparison Section */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            gap: 24px;
            align-items: stretch;
        }
        .compare-panel {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
        }
        .compare-panel h4 {
            font-size: 1rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.6;
        }
        .compare-list li i {
            font-size: 0.85rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .compare-list li i.fa-circle-check {
            color: var(--accent-cyan);
        }
        .compare-list li i.fa-circle-xmark {
            color: #FF6B6B;
        }
        .compare-panel.dark {
            background: rgba(8, 9, 15, 0.7);
            border-color: rgba(255, 107, 107, 0.25);
        }
        .compare-panel.dark h4 {
            color: #FF6B6B;
        }
        .compare-panel.dark .compare-list li i.fa-circle-check {
            color: #FF6B6B;
        }
        @media (max-width: 768px) {
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-white);
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition-base);
            letter-spacing: -0.01em;
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question .faq-icon {
            font-size: 0.8rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s;
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.12) 0%, rgba(8, 9, 15, 0.95) 100%);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
            padding: var(--section-padding) 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-content {
            display: flex;
            align-items: center;
            gap: 40px;
            position: relative;
            z-index: 1;
        }
        .cta-text {
            flex: 1;
        }
        .cta-text h3 {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: -0.02em;
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .cta-text p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 480px;
        }
        .cta-form {
            flex: 1;
            max-width: 460px;
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }
        .cta-form h5 {
            font-size: 0.95rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }
        .cta-form .form-note {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .form-control {
            background: rgba(8, 9, 15, 0.7);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            padding: 11px 16px;
            font-size: 0.85rem;
            transition: all var(--transition-base);
        }
        .form-control::placeholder {
            color: #5a6880;
        }
        .form-control:focus {
            background: rgba(8, 9, 15, 0.9);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
            color: var(--text-white);
        }
        .form-select {
            background-color: rgba(8, 9, 15, 0.7);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            padding: 11px 16px;
            font-size: 0.85rem;
            transition: all var(--transition-base);
        }
        .form-select:focus {
            background-color: rgba(8, 9, 15, 0.9);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
            color: var(--text-white);
        }
        .form-select option {
            background: #0D111E;
            color: var(--text-white);
        }
        .form-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-silver);
            margin-bottom: 6px;
        }
        .form-check-label {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .form-check-input {
            background-color: rgba(8, 9, 15, 0.7);
            border: 1px solid var(--border-glass);
        }
        .form-check-input:checked {
            background-color: var(--accent-blue);
            border-color: var(--accent-blue);
        }
        .btn-submit-form {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
            padding: 13px 20px;
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            background: var(--accent-gradient);
            border: none;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.3);
        }
        .btn-submit-form:hover {
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
            color: #fff;
        }
        .form-trust-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 14px;
            font-size: 0.72rem;
            color: var(--text-muted);
        }
        .form-trust-badges span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .form-trust-badges i {
            color: var(--accent-cyan);
            font-size: 0.7rem;
        }
        @media (max-width: 992px) {
            .cta-content {
                flex-direction: column;
                gap: 24px;
            }
            .cta-text h3 {
                font-size: 1.25rem;
            }
            .cta-form {
                max-width: 100%;
                width: 100%;
            }
        }
        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.9);
            border-top: 1px solid var(--border-glass);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .navbar-brand {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 360px;
        }
        .footer-column h4 {
            font-size: 0.82rem;
            font-weight: 800;
            color: var(--text-white);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }
        .footer-column a {
            display: block;
            font-size: 0.82rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: all var(--transition-base);
        }
        .footer-column a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 16px;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom .domain {
            color: #5a6880;
            font-size: 0.72rem;
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        /* FAB */
        .fab-floating {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 12px 18px;
            background: rgba(8, 9, 15, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-image: linear-gradient(135deg, #00F0FF, #0052FF, #00F0FF) 1;
            border-radius: 50px;
            color: var(--text-white);
            font-size: 0.78rem;
            font-weight: 700;
            transition: all var(--transition-base);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            opacity: 0.6;
            cursor: pointer;
            min-height: 48px;
            min-width: 48px;
            white-space: nowrap;
            overflow: hidden;
        }
        .fab-floating i {
            font-size: 1rem;
            color: var(--accent-cyan);
            animation: fab-pulse 2s ease-in-out infinite;
        }
        .fab-floating:hover {
            opacity: 1;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            transform: scale(1.05);
        }
        .fab-floating:active {
            transform: scale(0.95);
        }
        .fab-floating .fab-notification {
            position: absolute;
            top: -4px;
            right: -2px;
            width: 10px;
            height: 10px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #08090F;
            animation: fab-blink 1.5s ease-in-out infinite;
        }
        @keyframes fab-pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }
        @keyframes fab-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        @media (max-width: 480px) {
            .fab-floating {
                padding: 10px 14px;
                font-size: 0.7rem;
                gap: 4px;
            }
            .fab-floating i {
                font-size: 0.85rem;
            }
        }
        /* Focus visible */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }
        /* Buttons global */
        .btn-outline-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: transparent;
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-outline-glow:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
        }