/* roulang page: index */
:root {
            --bg-primary: #08090f;
            --bg-secondary: #0d111e;
            --bg-card: rgba(13, 17, 30, 0.72);
            --bg-glass: rgba(8, 9, 15, 0.55);
            --accent-blue: #0052ff;
            --accent-cyan: #00f0ff;
            --accent-gradient: linear-gradient(135deg, #0052ff 0%, #00f0ff 100%);
            --accent-gradient-reverse: linear-gradient(135deg, #00f0ff 0%, #0052ff 100%);
            --text-primary: #ffffff;
            --text-secondary: #cbd5e1;
            --text-muted: #7c8aa0;
            --text-cyan: #00f0ff;
            --border-default: rgba(0, 240, 255, 0.18);
            --border-hover: rgba(0, 240, 255, 0.55);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.35);
            --shadow-glow-strong: 0 0 35px rgba(0, 82, 255, 0.55);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-2xl: 96px;
            --font-display: 'Be Vietnam Pro', sans-serif;
            --font-body: 'Inter', sans-serif;
            --transition-fast: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-secondary);
            background-color: var(--bg-primary);
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(0, 82, 255, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 240, 255, 0.07) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 90%, rgba(0, 82, 255, 0.08) 0%, transparent 45%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--text-cyan);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }
        a:hover {
            color: #66f5ff;
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

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

        /* Container */
        .site-container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 12px 0;
            transition: background var(--transition-base), border-color var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.94);
            border-bottom-color: rgba(0, 240, 255, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .header-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
            flex-shrink: 0;
        }
        .header-logo-text {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 15px;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            max-width: 160px;
        }
        .header-logo-text span {
            display: block;
            font-size: 10px;
            font-weight: 600;
            color: var(--text-cyan);
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .main-nav a {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.08);
        }
        .main-nav a.active {
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.12);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.15);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 1px;
            box-shadow: 0 0 6px rgba(0, 240, 255, 0.6);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-login {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 9px 16px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-login:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-signup {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            padding: 9px 20px;
            border-radius: 8px;
            background: var(--accent-gradient);
            box-shadow: 0 0 18px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-signup:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
        }

        /* Mobile Toggle */
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-default);
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            font-size: 18px;
            transition: all var(--transition-fast);
        }
        .nav-toggle:hover {
            background: rgba(0, 240, 255, 0.2);
            border-color: var(--border-hover);
        }

        /* Hero */
        .hero-section {
            position: relative;
            padding: 80px 0 70px;
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center;
            opacity: 0.5;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 9, 15, 0.92) 0%, rgba(8, 9, 15, 0.65) 45%, rgba(13, 17, 30, 0.55) 100%);
        }
        .hero-overlay-glow {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: 
                radial-gradient(circle at 15% 20%, rgba(0, 82, 255, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(0, 240, 255, 0.12) 0%, transparent 45%);
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 100px;
            padding: 7px 16px;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-cyan);
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }
        .hero-badge i {
            font-size: 13px;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(0.85); }
        }
        .hero-title {
            font-family: var(--font-display);
            font-weight: 900;
            font-size: 46px;
            line-height: 1.18;
            color: var(--text-primary);
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }
        .hero-title .highlight {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 540px;
            margin-bottom: 28px;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 32px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 15px;
            color: #fff;
            padding: 14px 28px;
            border-radius: 12px;
            background: var(--accent-gradient);
            box-shadow: 0 0 25px rgba(0, 82, 255, 0.45);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.65);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-display);
            font-weight: 600;
            font-size: 15px;
            color: var(--text-primary);
            padding: 14px 24px;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid var(--border-default);
            backdrop-filter: blur(8px);
            transition: all var(--transition-fast);
        }
        .btn-secondary:hover {
            border-color: var(--border-hover);
            background: rgba(0, 240, 255, 0.1);
            color: var(--text-primary);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-value {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 26px;
            color: var(--text-cyan);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        /* Hero invitation panel */
        .invite-panel {
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(0, 240, 255, 0.22);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45), 0 0 30px rgba(0, 82, 255, 0.12);
            position: relative;
            overflow: hidden;
        }
        .invite-panel::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -40%;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .invite-panel-title {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 20px;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .invite-panel-sub {
            font-size: 13px;
            color: var(--text-cyan);
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .invite-progress-wrap {
            margin-bottom: 16px;
        }
        .invite-progress-label {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .invite-progress-bar {
            height: 8px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 100px;
            overflow: hidden;
            position: relative;
        }
        .invite-progress-fill {
            height: 100%;
            background: var(--accent-gradient);
            border-radius: 100px;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
            transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
            width: 0;
        }
        .invite-reward-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 22px;
        }
        .invite-reward-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .invite-reward-item i {
            color: var(--text-cyan);
            font-size: 15px;
            flex-shrink: 0;
        }
        .invite-btn {
            width: 100%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 15px;
            color: #fff;
            padding: 15px 24px;
            border-radius: 12px;
            background: var(--accent-gradient);
            box-shadow: 0 0 30px rgba(0, 82, 255, 0.5);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
            z-index: 1;
        }
        .invite-btn:hover {
            box-shadow: 0 0 45px rgba(0, 240, 255, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }
        .invite-btn:active {
            transform: translateY(0);
        }

        /* Sections common */
        .section {
            padding: 72px 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--text-cyan);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 12px;
            background: rgba(0, 240, 255, 0.08);
            padding: 5px 14px;
            border-radius: 100px;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }
        .section-title {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 32px;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 620px;
        }

        /* Topic cloud */
        .topic-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid var(--border-default);
            border-radius: 100px;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }
        .topic-tag:hover {
            background: rgba(0, 240, 255, 0.12);
            border-color: var(--border-hover);
            color: var(--text-primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 18px rgba(0, 240, 255, 0.15);
        }
        .topic-tag i {
            color: var(--text-cyan);
            font-size: 13px;
        }

        /* Rank cards */
        .rank-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }
        .rank-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            position: relative;
        }
        .rank-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .rank-card-img {
            position: relative;
            height: 170px;
            overflow: hidden;
            background: rgba(0, 0, 0, 0.3);
        }
        .rank-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .rank-card:hover .rank-card-img img {
            transform: scale(1.06);
        }
        .rank-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent-gradient);
            color: #fff;
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 13px;
            padding: 5px 12px;
            border-radius: 8px;
            box-shadow: 0 0 14px rgba(0, 82, 255, 0.5);
            letter-spacing: 0.04em;
        }
        .rank-tag {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(6px);
            color: var(--text-cyan);
            font-size: 11px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 100px;
            border: 1px solid rgba(0, 240, 255, 0.35);
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }
        .rank-card-body {
            padding: 20px;
        }
        .rank-card-title {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 17px;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .rank-card-desc {
            font-size: 13px;
            line-height: 1.6;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .rank-card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .rank-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .rank-card-meta i {
            color: var(--text-cyan);
            font-size: 12px;
        }

        /* Metrics dashboard */
        .metrics-panel {
            background: var(--bg-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            box-shadow: 0 15px 50px rgba(0, 0, 0, 0.35);
        }
        .metric-item {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding: 8px 0;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            padding-right: 20px;
        }
        .metric-item:last-child {
            border-right: none;
            padding-right: 0;
        }
        .metric-value {
            font-family: var(--font-display);
            font-weight: 900;
            font-size: 38px;
            line-height: 1.1;
            color: var(--text-cyan);
            letter-spacing: -0.02em;
        }
        .metric-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }
        .metric-icon {
            font-size: 22px;
            color: var(--accent-cyan);
            margin-bottom: 4px;
        }

        /* Horizontal scroll media */
        .media-scroll-wrap {
            overflow-x: auto;
            overflow-y: hidden;
            padding-bottom: 12px;
            scrollbar-width: thin;
            scrollbar-color: rgba(0, 240, 255, 0.3) transparent;
            -webkit-overflow-scrolling: touch;
        }
        .media-scroll-wrap::-webkit-scrollbar {
            height: 5px;
        }
        .media-scroll-wrap::-webkit-scrollbar-track {
            background: rgba(255, 255, 255, 0.04);
            border-radius: 100px;
        }
        .media-scroll-wrap::-webkit-scrollbar-thumb {
            background: rgba(0, 240, 255, 0.3);
            border-radius: 100px;
        }
        .media-scroll {
            display: flex;
            gap: 20px;
            width: max-content;
        }
        .media-card {
            width: 280px;
            flex-shrink: 0;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .media-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .media-card-img {
            height: 150px;
            overflow: hidden;
            position: relative;
        }
        .media-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .media-card:hover .media-card-img img {
            transform: scale(1.05);
        }
        .media-type-badge {
            position: absolute;
            bottom: 10px;
            left: 12px;
            background: rgba(8, 9, 15, 0.8);
            backdrop-filter: blur(6px);
            color: var(--text-cyan);
            font-size: 10px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 100px;
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }
        .media-card-body {
            padding: 16px;
        }
        .media-card-title {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 15px;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .media-card-desc {
            font-size: 12px;
            line-height: 1.55;
            color: var(--text-muted);
        }

        /* News list */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
        }
        .news-main-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 18px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-fast);
            border-radius: 8px;
        }
        .news-item:hover {
            background: rgba(0, 240, 255, 0.04);
            border-bottom-color: rgba(0, 240, 255, 0.2);
        }
        .news-item-index {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 20px;
            color: rgba(0, 240, 255, 0.4);
            width: 38px;
            flex-shrink: 0;
            text-align: center;
        }
        .news-item-content {
            flex: 1;
            min-width: 0;
        }
        .news-item-title {
            font-family: var(--font-display);
            font-weight: 600;
            font-size: 15px;
            color: var(--text-primary);
            line-height: 1.45;
            display: block;
            margin-bottom: 4px;
            transition: color var(--transition-fast);
        }
        .news-item:hover .news-item-title {
            color: var(--text-cyan);
        }
        .news-item-meta {
            display: flex;
            gap: 14px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .news-item-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .news-item-meta i {
            font-size: 11px;
            color: var(--text-cyan);
        }
        .news-sidebar {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            padding: 24px 20px;
        }
        .news-sidebar-title {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 16px;
            color: var(--text-primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .news-sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-sidebar-item {
            padding: 12px 14px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .news-sidebar-item:hover {
            background: rgba(0, 240, 255, 0.07);
            border-color: rgba(0, 240, 255, 0.2);
        }
        .news-sidebar-item-title {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            line-height: 1.4;
            margin-bottom: 4px;
        }
        .news-sidebar-item-meta {
            font-size: 11px;
            color: var(--text-muted);
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
        }
        .testimonial-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-base);
        }
        .testimonial-card:hover {
            border-color: var(--border-hover);
            box-shadow: 0 8px 30px rgba(0, 240, 255, 0.12);
        }
        .testimonial-stars {
            display: flex;
            gap: 3px;
            color: #ffc107;
            font-size: 14px;
            margin-bottom: 12px;
        }
        .testimonial-text {
            font-size: 14px;
            line-height: 1.65;
            color: var(--text-secondary);
            margin-bottom: 16px;
            font-style: italic;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            flex-shrink: 0;
        }
        .testimonial-name {
            font-weight: 600;
            font-size: 14px;
            color: var(--text-primary);
        }
        .testimonial-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 22px;
            text-align: left;
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 15px;
            color: var(--text-primary);
            background: none;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--text-cyan);
        }
        .faq-question i {
            color: var(--text-cyan);
            font-size: 16px;
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 22px 20px;
        }

        /* Download CTA */
        .cta-section {
            position: relative;
            padding: 80px 0;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.12) 0%, rgba(0, 240, 255, 0.06) 50%, rgba(8, 9, 15, 0.95) 100%);
        }
        .cta-panel {
            display: grid;
            grid-template-columns: 1fr auto;
            align-items: center;
            gap: 32px;
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-xl);
            padding: 48px 44px;
            box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5), 0 0 40px rgba(0, 82, 255, 0.15);
        }
        .cta-title {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 28px;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }
        .cta-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 500px;
            line-height: 1.65;
        }
        .cta-buttons {
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-download {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 15px;
            color: #fff;
            padding: 16px 30px;
            border-radius: 14px;
            background: var(--accent-gradient);
            box-shadow: 0 0 30px rgba(0, 82, 255, 0.5);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            min-width: 220px;
        }
        .btn-download:hover {
            box-shadow: 0 0 50px rgba(0, 240, 255, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-download-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            font-family: var(--font-display);
            font-weight: 600;
            font-size: 14px;
            color: var(--text-cyan);
            padding: 14px 28px;
            border-radius: 14px;
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid var(--border-default);
            transition: all var(--transition-fast);
            min-width: 220px;
        }
        .btn-download-outline:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--border-hover);
            color: var(--text-cyan);
        }

        /* Footer */
        .site-footer {
            background: #06070d;
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 48px 0 28px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 9px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
        }
        .footer-logo-text {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 14px;
            color: var(--text-primary);
            line-height: 1.3;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
            max-width: 280px;
        }
        .footer-col-title {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 14px;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: all var(--transition-fast);
        }
        .footer-col-links a:hover {
            color: var(--text-cyan);
            transform: translateX(3px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom-links {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }
        .footer-bottom-links a {
            color: var(--text-muted);
            font-size: 12px;
        }
        .footer-bottom-links a:hover {
            color: var(--text-cyan);
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 90;
            width: 52px;
            height: 52px;
            border-radius: 100px;
            background: rgba(8, 9, 15, 0.62);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.62), rgba(8, 9, 15, 0.62)), var(--accent-gradient);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-cyan);
            font-size: 20px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5), 0 4px 20px rgba(0, 0, 0, 0.3);
            cursor: pointer;
            transition: all var(--transition-base);
            opacity: 0.65;
            animation: fab-breathe 3.5s ease-in-out infinite;
        }
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.08);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.75), 0 6px 28px rgba(0, 0, 0, 0.35);
            animation-play-state: paused;
        }
        .fab-support:active {
            transform: scale(0.95);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
        }
        .fab-support .fab-notif {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #ff3b5c;
            border-radius: 50%;
            border: 2px solid #08090f;
            box-shadow: 0 0 8px rgba(255, 59, 92, 0.7);
            animation: fab-blink 1.6s ease-in-out infinite;
        }
        @keyframes fab-breathe {
            0%, 100% { opacity: 0.65; box-shadow: 0 0 15px rgba(0, 240, 255, 0.5), 0 4px 20px rgba(0, 0, 0, 0.3); }
            50% { opacity: 0.85; box-shadow: 0 0 25px rgba(0, 240, 255, 0.7), 0 4px 24px rgba(0, 0, 0, 0.35); }
        }
        @keyframes fab-blink {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.3; transform: scale(0.7); }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-title {
                font-size: 38px;
            }
            .invite-panel {
                max-width: 520px;
            }
            .metrics-panel {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-item:nth-child(2) {
                border-right: none;
                padding-right: 0;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-panel {
                grid-template-columns: 1fr;
                padding: 36px 28px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 52px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .hero-section {
                padding: 50px 0 44px;
                min-height: auto;
            }
            .hero-title {
                font-size: 30px;
            }
            .header-logo-text {
                font-size: 13px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.15);
                gap: 4px;
            }
            .main-nav.show {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 15px;
                text-align: left;
            }
            .nav-toggle {
                display: flex;
            }
            .btn-login {
                padding: 7px 12px;
                font-size: 12px;
            }
            .btn-signup {
                padding: 7px 14px;
                font-size: 12px;
            }
            .rank-grid {
                grid-template-columns: 1fr;
            }
            .metrics-panel {
                grid-template-columns: 1fr 1fr;
                padding: 24px 20px;
                gap: 18px;
            }
            .metric-value {
                font-size: 28px;
            }
            .metric-item {
                padding-right: 10px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .cta-panel {
                padding: 28px 22px;
                border-radius: var(--radius-lg);
            }
            .cta-title {
                font-size: 22px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-stats {
                gap: 18px;
            }
            .hero-stat-value {
                font-size: 20px;
            }
            .btn-download,
            .btn-download-outline {
                min-width: 100%;
                width: 100%;
            }
            .fab-support {
                left: 12px;
                bottom: 80px;
                width: 46px;
                height: 46px;
                font-size: 18px;
            }
        }
        @media (max-width: 520px) {
            .site-container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .hero-title {
                font-size: 24px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .section-title {
                font-size: 22px;
            }
            .rank-card-img {
                height: 140px;
            }
            .metrics-panel {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .metric-item {
                border-right: none;
                padding-right: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                padding-bottom: 12px;
            }
            .metric-item:last-child {
                border-bottom: none;
                padding-bottom: 0;
            }
            .media-card {
                width: 240px;
            }
            .media-card-img {
                height: 130px;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: 14px 12px;
            }
            .news-item-index {
                width: auto;
                font-size: 16px;
                text-align: left;
            }
            .cta-buttons {
                width: 100%;
            }
            .invite-panel {
                padding: 22px 18px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090f;
            --bg-secondary: #0d111e;
            --bg-card: rgba(13, 17, 30, 0.72);
            --bg-glass: rgba(8, 9, 15, 0.55);
            --accent-blue: #0052ff;
            --accent-cyan: #00f0ff;
            --accent-gradient: linear-gradient(135deg, #0052ff 0%, #00f0ff 100%);
            --accent-gradient-reverse: linear-gradient(135deg, #00f0ff 0%, #0052ff 100%);
            --text-primary: #ffffff;
            --text-secondary: #cbd5e1;
            --text-muted: #7c8aa0;
            --text-cyan: #00f0ff;
            --border-default: rgba(0, 240, 255, 0.18);
            --border-hover: rgba(0, 240, 255, 0.55);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.35);
            --shadow-glow-strong: 0 0 35px rgba(0, 82, 255, 0.55);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-2xl: 96px;
            --font-display: 'Be Vietnam Pro', sans-serif;
            --font-body: 'Inter', sans-serif;
            --transition-fast: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-secondary);
            background-color: var(--bg-primary);
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(0, 82, 255, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 240, 255, 0.07) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 90%, rgba(0, 82, 255, 0.08) 0%, transparent 45%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--text-cyan);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: #66f5ff;
            text-decoration: none;
        }

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

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

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

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

        /* Container */
        .site-container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 12px 0;
            transition: background var(--transition-base), border-color var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.94);
            border-bottom-color: rgba(0, 240, 255, 0.25);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

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

        .header-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
            flex-shrink: 0;
        }

        .header-logo-text {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 15px;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            max-width: 190px;
        }

        .header-logo-text span {
            display: block;
            font-size: 10px;
            font-weight: 600;
            color: var(--text-cyan);
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }

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

        .main-nav a {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.08);
        }

        .main-nav a.active {
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.1);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.6);
        }

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

        .btn-login {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .btn-signup {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            padding: 9px 18px;
            border-radius: 8px;
            background: var(--accent-gradient);
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
        }

        .btn-signup:hover {
            color: #fff;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.45);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border-default);
            color: var(--text-primary);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            background: rgba(13, 17, 30, 0.6);
        }

        .nav-toggle:hover {
            border-color: var(--border-hover);
            background: rgba(0, 240, 255, 0.08);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 24px 0 8px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb-nav a:hover {
            color: var(--text-cyan);
        }

        .breadcrumb-nav .separator {
            color: rgba(0, 240, 255, 0.35);
            font-size: 11px;
        }

        .breadcrumb-nav .current {
            color: var(--text-cyan);
            font-weight: 500;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* Article Header */
        .article-header-section {
            padding: 40px 0 28px;
        }

        .article-header-top {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 20px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-default);
            color: var(--text-cyan);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }

        .article-date {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-h1 {
            font-family: var(--font-display);
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 900;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin: 0 0 18px;
            max-width: 920px;
        }

        .article-summary-line {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 780px;
            line-height: 1.7;
        }

        /* Featured Image */
        .article-featured-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.15);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
            margin-bottom: 32px;
            position: relative;
        }

        .article-featured-image img {
            width: 100%;
            height: auto;
            min-height: 220px;
            object-fit: cover;
        }

        /* Article Content */
        .article-content-section {
            padding: 0 0 40px;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-secondary);
            max-width: 860px;
        }

        .article-content h2 {
            font-family: var(--font-display);
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            margin: 36px 0 16px;
            letter-spacing: -0.01em;
            line-height: 1.35;
        }

        .article-content h3 {
            font-family: var(--font-display);
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 28px 0 12px;
            line-height: 1.4;
        }

        .article-content p {
            margin: 0 0 16px;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 18px;
            padding-left: 24px;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 8px;
        }

        .article-content ul li::marker {
            color: var(--accent-cyan);
        }

        .article-content ol li::marker {
            color: var(--accent-cyan);
            font-weight: 700;
        }

        .article-content blockquote {
            border-left: 3px solid var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
            padding: 16px 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 20px 0;
            font-style: italic;
            color: var(--text-primary);
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            border: 1px solid rgba(0, 240, 255, 0.1);
        }

        .article-content a {
            color: var(--text-cyan);
            border-bottom: 1px solid rgba(0, 240, 255, 0.3);
        }

        .article-content a:hover {
            color: #66f5ff;
            border-bottom-color: rgba(0, 240, 255, 0.8);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .article-content table th {
            background: rgba(0, 240, 255, 0.08);
            color: var(--text-primary);
            font-weight: 700;
            font-size: 14px;
            text-align: left;
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-default);
        }

        .article-content table td {
            padding: 12px 16px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
            font-size: 14px;
        }

        /* Not Found */
        .article-not-found {
            background: rgba(13, 17, 30, 0.6);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .article-not-found-icon {
            font-size: 52px;
            color: var(--text-cyan);
            margin-bottom: 18px;
        }

        .article-not-found h2 {
            font-family: var(--font-display);
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 10px;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin: 0 0 20px;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            padding: 12px 24px;
            border-radius: 8px;
            background: var(--accent-gradient);
            transition: all var(--transition-fast);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
        }

        .btn-back-home:hover {
            color: #fff;
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.45);
            transform: translateY(-2px);
        }

        /* In-article CTA */
        .article-inline-cta {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.08));
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: 28px 28px;
            margin: 32px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .article-inline-cta-text {
            flex: 1;
            min-width: 240px;
        }

        .article-inline-cta-text strong {
            font-family: var(--font-display);
            font-size: 18px;
            font-weight: 800;
            color: var(--text-primary);
            display: block;
            margin-bottom: 6px;
        }

        .article-inline-cta-text span {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            padding: 13px 28px;
            border-radius: 8px;
            background: var(--accent-gradient);
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.3);
        }

        .btn-cta:hover {
            color: #fff;
            box-shadow: 0 0 45px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
        }

        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-cyan);
            padding: 12px 24px;
            border-radius: 8px;
            border: 1px solid var(--border-hover);
            transition: all var(--transition-fast);
            white-space: nowrap;
            background: transparent;
        }

        .btn-cta-outline:hover {
            color: #fff;
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }

        /* Metrics Dashboard */
        .metrics-section {
            padding: 40px 0;
            border-top: 1px solid rgba(0, 240, 255, 0.08);
        }

        .section-title {
            font-family: var(--font-display);
            font-size: clamp(22px, 3vw, 32px);
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 8px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0 0 28px;
            max-width: 650px;
            line-height: 1.6;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .metric-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            text-align: left;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent-gradient);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

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

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

        .metric-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-cyan);
            font-size: 18px;
            margin-bottom: 12px;
        }

        .metric-value {
            font-family: var(--font-display);
            font-size: 28px;
            font-weight: 900;
            color: var(--text-primary);
            line-height: 1.1;
            margin-bottom: 4px;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* FAQ Section */
        .faq-section {
            padding: 40px 0;
            border-top: 1px solid rgba(0, 240, 255, 0.08);
        }

        .faq-list {
            max-width: 860px;
        }

        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            width: 100%;
            text-align: left;
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            background: none;
            border: none;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--text-cyan);
        }

        .faq-question .faq-toggle-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border-default);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 12px;
            color: var(--text-cyan);
            transition: all var(--transition-fast);
        }

        .faq-item.open .faq-toggle-icon {
            transform: rotate(45deg);
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--border-hover);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA Form Section */
        .cta-form-section {
            padding: 48px 0 64px;
            border-top: 1px solid rgba(0, 240, 255, 0.08);
        }

        .cta-form-wrapper {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            display: flex;
            gap: 32px;
            align-items: center;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .cta-form-wrapper::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-info {
            flex: 1;
            min-width: 280px;
        }

        .cta-form-info h2 {
            font-family: var(--font-display);
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 10px;
            letter-spacing: -0.01em;
        }

        .cta-form-info p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 20px;
            line-height: 1.6;
        }

        .cta-form-benefits {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .cta-form-benefits span {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .cta-form-benefits i {
            color: var(--text-cyan);
            font-size: 14px;
        }

        .cta-form {
            flex: 1;
            min-width: 300px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cta-form input {
            font-family: var(--font-body);
            font-size: 14px;
            padding: 14px 18px;
            border-radius: 8px;
            border: 1px solid var(--border-default);
            background: rgba(8, 9, 15, 0.7);
            color: var(--text-primary);
            transition: all var(--transition-fast);
            width: 100%;
        }

        .cta-form input::placeholder {
            color: var(--text-muted);
        }

        .cta-form input:focus {
            border-color: var(--border-hover);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
            outline: none;
        }

        .cta-form select {
            font-family: var(--font-body);
            font-size: 14px;
            padding: 14px 18px;
            border-radius: 8px;
            border: 1px solid var(--border-default);
            background: rgba(8, 9, 15, 0.7);
            color: var(--text-primary);
            transition: all var(--transition-fast);
            width: 100%;
            appearance: none;
            -webkit-appearance: none;
            -moz-appearance: none;
        }

        .cta-form select:focus {
            border-color: var(--border-hover);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
            outline: none;
        }

        .btn-submit {
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            padding: 15px 28px;
            border-radius: 8px;
            background: var(--accent-gradient);
            transition: all var(--transition-fast);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.3);
            width: 100%;
            letter-spacing: 0.01em;
        }

        .btn-submit:hover {
            box-shadow: 0 0 45px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.9);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand {
            max-width: 320px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 9px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }

        .footer-logo-text {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 14px;
            line-height: 1.3;
            color: var(--text-primary);
        }

        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col-title {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-col-links a:hover {
            color: var(--text-cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-bottom-links {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }

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

        /* FAB */
        .fab-cyber {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.65;
            transition: all var(--transition-base);
            position: relative;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
        }

        .fab-cyber::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: var(--accent-gradient);
            z-index: -1;
            opacity: 0.8;
        }

        .fab-cyber:hover {
            opacity: 1;
            transform: scale(1.08);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.55);
        }

        .fab-cyber:active {
            transform: scale(0.94);
        }

        .fab-cyber-icon {
            font-size: 22px;
            color: #fff;
            z-index: 1;
            animation: fabPulse 2.5s ease-in-out infinite;
        }

        @keyframes fabPulse {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.6;
            }
        }

        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #ff007f;
            border: 2px solid #08090f;
            animation: blobBlink 1.4s ease-in-out infinite;
            z-index: 2;
        }

        @keyframes blobBlink {
            0%, 100% {
                opacity: 1;
                box-shadow: 0 0 6px #ff007f;
            }
            50% {
                opacity: 0.4;
                box-shadow: none;
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                max-width: none;
                grid-column: span 2;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-bottom: 1px solid rgba(0, 240, 255, 0.15);
                padding: 16px 20px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
                z-index: 99;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 15px;
                width: 100%;
            }
            .nav-toggle {
                display: flex;
            }
            .header-actions {
                gap: 6px;
            }
            .btn-login,
            .btn-signup {
                font-size: 12px;
                padding: 7px 12px;
            }
            .article-inline-cta {
                flex-direction: column;
                align-items: flex-start;
                padding: 22px 20px;
            }
            .cta-form-wrapper {
                padding: 28px 22px;
            }
            .metrics-grid {
                gap: 12px;
            }
            .metric-value {
                font-size: 22px;
            }
            .fab-cyber {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 80px;
            }
            .fab-cyber-icon {
                font-size: 18px;
            }
        }

        @media (max-width: 520px) {
            .site-container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .header-logo-text {
                font-size: 13px;
                max-width: 150px;
            }
            .header-logo-icon {
                width: 34px;
                height: 34px;
                font-size: 17px;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .metric-card {
                padding: 16px 14px;
            }
            .metric-value {
                font-size: 20px;
            }
            .article-h1 {
                font-size: 24px;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 20px;
            }
            .cta-form-wrapper {
                padding: 24px 18px;
            }
            .cta-form-info h2 {
                font-size: 20px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .btn-login,
            .btn-signup {
                padding: 6px 10px;
                font-size: 11px;
            }
            .main-nav {
                top: 58px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #08090f;
            --bg-secondary: #0d111e;
            --bg-card: rgba(13, 17, 30, 0.72);
            --bg-glass: rgba(8, 9, 15, 0.55);
            --accent-blue: #0052ff;
            --accent-cyan: #00f0ff;
            --accent-gradient: linear-gradient(135deg, #0052ff 0%, #00f0ff 100%);
            --accent-gradient-reverse: linear-gradient(135deg, #00f0ff 0%, #0052ff 100%);
            --text-primary: #ffffff;
            --text-secondary: #cbd5e1;
            --text-muted: #7c8aa0;
            --text-cyan: #00f0ff;
            --border-default: rgba(0, 240, 255, 0.18);
            --border-hover: rgba(0, 240, 255, 0.55);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.35);
            --shadow-glow-strong: 0 0 35px rgba(0, 82, 255, 0.55);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-2xl: 96px;
            --font-display: 'Be Vietnam Pro', sans-serif;
            --font-body: 'Inter', sans-serif;
            --transition-fast: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-secondary);
            background-color: var(--bg-primary);
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(0, 82, 255, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 240, 255, 0.07) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 90%, rgba(0, 82, 255, 0.08) 0%, transparent 45%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--text-cyan);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: #66f5ff;
            text-decoration: none;
        }

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

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

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

        /* Container */
        .site-container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 12px 0;
            transition: background var(--transition-base), border-color var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.94);
            border-bottom-color: rgba(0, 240, 255, 0.25);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

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

        .header-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
            flex-shrink: 0;
        }

        .header-logo-text {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 15px;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            max-width: 180px;
        }

        .header-logo-text span {
            display: block;
            font-size: 10px;
            font-weight: 600;
            color: var(--text-cyan);
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }

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

        .main-nav a {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.08);
        }

        .main-nav a.active {
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.12);
        }

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

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

        .btn-login {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            padding: 9px 18px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--border-default);
            background: rgba(0, 240, 255, 0.06);
            color: var(--text-primary);
        }

        .btn-signup {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            padding: 9px 20px;
            border-radius: 8px;
            background: var(--accent-gradient);
            transition: all var(--transition-fast);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
            white-space: nowrap;
        }

        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.45);
            transform: translateY(-1px);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(0, 240, 255, 0.08);
            color: var(--text-cyan);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            border: 1px solid var(--border-default);
        }

        .nav-toggle:hover {
            background: rgba(0, 240, 255, 0.15);
            border-color: var(--border-hover);
        }

        /* Mobile Nav Drawer */
        .mobile-nav-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            max-width: 85vw;
            height: 100vh;
            background: rgba(8, 9, 15, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 200;
            padding: 24px;
            transition: right var(--transition-base);
            border-left: 1px solid var(--border-default);
            overflow-y: auto;
            box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
        }

        .mobile-nav-drawer.open {
            right: 0;
        }

        .mobile-nav-drawer .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }

        .mobile-nav-drawer .drawer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mobile-nav-drawer .drawer-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 9px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
        }

        .mobile-nav-drawer .drawer-logo-text {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 13px;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .mobile-nav-drawer .drawer-logo-text span {
            display: block;
            font-size: 9px;
            font-weight: 600;
            color: var(--text-cyan);
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .drawer-close {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(0, 240, 255, 0.08);
            color: var(--text-primary);
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            border: 1px solid var(--border-default);
        }

        .drawer-close:hover {
            background: rgba(0, 240, 255, 0.15);
        }

        .mobile-nav-drawer .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .mobile-nav-drawer .drawer-nav a {
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 12px 16px;
            border-radius: 10px;
            transition: all var(--transition-fast);
        }

        .mobile-nav-drawer .drawer-nav a:hover {
            background: rgba(0, 240, 255, 0.06);
            color: var(--text-primary);
        }

        .mobile-nav-drawer .drawer-nav a.active {
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.12);
        }

        .drawer-actions {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 20px;
        }

        .drawer-actions .btn-login {
            text-align: center;
            border: 1px solid var(--border-default);
        }

        .drawer-actions .btn-signup {
            text-align: center;
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 150;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            transition: opacity var(--transition-base);
        }

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

        /* Page Hero */
        .page-hero {
            position: relative;
            padding: var(--space-xl) 0 var(--space-lg);
            background-image:
                linear-gradient(180deg, rgba(8, 9, 15, 0.65) 0%, rgba(8, 9, 15, 0.2) 50%, var(--bg-primary) 100%),
                url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 40%, rgba(0, 82, 255, 0.15) 0%, transparent 50%);
            pointer-events: none;
        }

        .page-hero-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-xl);
            align-items: center;
        }

        .page-hero-text {
            padding-right: 20px;
        }

        .hero-badge-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: var(--space-md);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-cyan);
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-default);
        }

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

        .page-hero h1 {
            font-family: var(--font-display);
            font-size: 42px;
            font-weight: 900;
            line-height: 1.2;
            color: var(--text-primary);
            letter-spacing: -0.03em;
            margin-bottom: var(--space-sm);
        }

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

        .page-hero-sub {
            font-size: 17px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: var(--space-md);
            max-width: 520px;
        }

        .hero-eligibility {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: var(--space-md);
        }

        .eligibility-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .eligibility-item i {
            color: var(--text-cyan);
            font-size: 14px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            padding: 14px 28px;
            border-radius: 10px;
            background: var(--accent-gradient);
            transition: all var(--transition-base);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
            border: none;
        }

        .btn-primary:hover {
            box-shadow: 0 0 35px rgba(0, 82, 255, 0.55);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0) scale(0.98);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            padding: 14px 28px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid var(--border-default);
            transition: all var(--transition-fast);
        }

        .btn-secondary:hover {
            border-color: var(--border-hover);
            background: rgba(0, 240, 255, 0.1);
            color: var(--text-primary);
        }

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

        .hero-data-panel {
            width: 100%;
            max-width: 420px;
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: var(--space-md);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
        }

        .hero-data-panel h3 {
            font-family: var(--font-display);
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-data-panel h3 i {
            color: var(--text-cyan);
        }

        .hero-metric-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .hero-metric-row:last-child {
            border-bottom: none;
        }

        .hero-metric-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .hero-metric-value {
            font-family: var(--font-display);
            font-size: 16px;
            font-weight: 700;
            color: var(--text-cyan);
        }

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

        .section-alt {
            background: rgba(13, 17, 30, 0.4);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .section-header {
            margin-bottom: var(--space-lg);
            max-width: 650px;
        }

        .section-header h2 {
            font-family: var(--font-display);
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: var(--space-xs);
            line-height: 1.3;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--text-cyan);
            margin-bottom: var(--space-xs);
        }

        /* Metrics Dashboard */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-sm);
            margin-bottom: var(--space-md);
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent-gradient);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .metric-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
        }

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

        .metric-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            color: var(--text-cyan);
            margin-bottom: var(--space-xs);
        }

        .metric-value {
            font-family: var(--font-display);
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 11px;
            font-weight: 600;
            color: #32cd32;
            margin-top: 6px;
        }

        /* Service Matrix */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-sm);
        }

        .matrix-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            transition: all var(--transition-base);
        }

        .matrix-item:hover {
            border-color: var(--border-hover);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
        }

        .matrix-item-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .matrix-item-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(0, 82, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-cyan);
            flex-shrink: 0;
        }

        .matrix-item h3 {
            font-family: var(--font-display);
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
        }

        .matrix-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.65;
        }

        .matrix-score {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .matrix-score i {
            color: var(--text-cyan);
        }

        /* Results Comparison */
        .comparison-table-wrap {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            overflow: hidden;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            margin-bottom: var(--space-md);
        }

        .comparison-header-row {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
            gap: 12px;
            padding: 14px 20px;
            background: rgba(0, 240, 255, 0.06);
            border-bottom: 1px solid var(--border-default);
            font-family: var(--font-display);
            font-size: 12px;
            font-weight: 700;
            color: var(--text-muted);
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .comparison-row {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
            gap: 12px;
            padding: 16px 20px;
            align-items: center;
            border-bottom: 1px solid rgba(0, 240, 255, 0.06);
            transition: all var(--transition-fast);
        }

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

        .comparison-row:hover {
            background: rgba(0, 240, 255, 0.03);
        }

        .comp-game-name {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .comp-game-rank {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }

        .comp-game-rank.top-1 {
            background: linear-gradient(135deg, #ffd700, #ff9f00);
        }

        .comp-game-rank.top-2 {
            background: linear-gradient(135deg, #c0c0c0, #a0a0a0);
            color: #111;
        }

        .comp-game-rank.top-3 {
            background: linear-gradient(135deg, #cd7f32, #b8860b);
        }

        .comp-game-info h4 {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 2px;
        }

        .comp-game-info span {
            font-size: 11px;
            color: var(--text-muted);
        }

        .comp-cell {
            font-size: 13px;
            color: var(--text-secondary);
        }

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

        .comp-rating {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 700;
            color: #ffd700;
        }

        .comp-rating i {
            font-size: 12px;
        }

        .comp-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-family: var(--font-display);
            font-size: 12px;
            font-weight: 600;
            color: var(--text-cyan);
            padding: 8px 16px;
            border-radius: 8px;
            border: 1px solid var(--border-default);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .comp-btn:hover {
            border-color: var(--border-hover);
            background: rgba(0, 240, 255, 0.08);
            color: var(--text-primary);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            margin-bottom: var(--space-xs);
            overflow: hidden;
            transition: all var(--transition-base);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            text-align: left;
            transition: all var(--transition-fast);
        }

        .faq-question i {
            color: var(--text-cyan);
            font-size: 14px;
            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 var(--transition-slow);
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        /* CTA Form */
        .cta-section {
            padding: var(--space-xl) 0;
        }

        .cta-card {
            background: var(--bg-card);
            border: 1px solid var(--border-hover);
            border-radius: var(--radius-xl);
            padding: var(--space-lg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
        }

        .cta-card::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-card-content h2 {
            font-family: var(--font-display);
            font-size: 28px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: var(--space-xs);
            line-height: 1.3;
        }

        .cta-card-content p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            position: relative;
            z-index: 1;
        }

        .form-field {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-field label {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-secondary);
            letter-spacing: 0.03em;
        }

        .form-field input,
        .form-field select,
        .form-field textarea {
            font-family: var(--font-body);
            font-size: 14px;
            color: var(--text-primary);
            background: rgba(8, 9, 15, 0.6);
            border: 1px solid var(--border-default);
            border-radius: 10px;
            padding: 12px 16px;
            transition: all var(--transition-fast);
            outline: none;
        }

        .form-field input:focus,
        .form-field select:focus,
        .form-field textarea:focus {
            border-color: var(--border-hover);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.08);
        }

        .form-field input::placeholder,
        .form-field textarea::placeholder {
            color: var(--text-muted);
        }

        .form-submit {
            align-self: flex-start;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            padding: 13px 28px;
            border-radius: 10px;
            background: var(--accent-gradient);
            transition: all var(--transition-base);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
        }

        .form-submit:hover {
            box-shadow: 0 0 35px rgba(0, 82, 255, 0.5);
            transform: translateY(-1px);
        }

        .form-note {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Floating Action Button - Cyber/Neon Style */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 48px;
            min-height: 48px;
            border-radius: 28px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            cursor: pointer;
            transition: all var(--transition-base);
            opacity: 0.6;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            position: relative;
        }

        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 28px;
            background: linear-gradient(135deg, #00f0ff, #0052ff);
            z-index: -1;
            opacity: 0.7;
            transition: opacity var(--transition-base);
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.75);
        }

        .fab:hover::before {
            opacity: 1;
        }

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

        .fab .fab-icon {
            font-size: 22px;
            color: var(--text-cyan);
            z-index: 1;
        }

        .fab .fab-notification {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #ff007f;
            border: 2px solid #08090f;
            animation: pulse-dot 1.8s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.4); opacity: 0.7; }
        }

        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.85);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: var(--space-xl) 0 var(--space-md);
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: var(--space-sm);
        }

        .footer-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 9px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            flex-shrink: 0;
        }

        .footer-logo-text {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 14px;
            color: var(--text-primary);
            line-height: 1.25;
        }

        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-col-title {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--space-sm);
        }

        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: all var(--transition-fast);
        }

        .footer-col-links a:hover {
            color: var(--text-cyan);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: var(--space-md);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .footer-bottom-links a {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .page-hero-content {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .page-hero-text {
                padding-right: 0;
            }
            .page-hero h1 {
                font-size: 34px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .cta-card {
                grid-template-columns: 1fr;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                display: inline-flex;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                display: none;
            }
            .page-hero {
                padding: var(--space-lg) 0 var(--space-lg);
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: flex-start;
            }
            .section {
                padding: var(--space-lg) 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .comparison-header-row {
                display: none;
            }
            .comparison-row {
                grid-template-columns: 1fr;
                gap: 10px;
                padding: 16px;
            }
            .comp-cell {
                display: flex;
                justify-content: space-between;
            }
            .comp-cell::before {
                content: attr(data-label);
                font-weight: 600;
                color: var(--text-muted);
            }
            .comp-btn {
                align-self: flex-start;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .metric-value {
                font-size: 22px;
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-card {
                padding: var(--space-md);
            }
            .fab {
                left: 12px;
                bottom: 80px;
                min-width: 44px;
                min-height: 44px;
            }
        }

        @media (max-width: 520px) {
            .site-container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .header-logo-text {
                font-size: 13px;
                max-width: 140px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .metric-card {
                padding: var(--space-sm);
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer-inner {
                padding: 0 16px 16px;
            }
            .cta-card {
                padding: var(--space-sm);
                border-radius: var(--radius-lg);
            }
            .cta-card-content h2 {
                font-size: 22px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #08090f;
            --bg-secondary: #0d111e;
            --bg-card: rgba(13, 17, 30, 0.72);
            --bg-glass: rgba(8, 9, 15, 0.55);
            --accent-blue: #0052ff;
            --accent-cyan: #00f0ff;
            --accent-gradient: linear-gradient(135deg, #0052ff 0%, #00f0ff 100%);
            --accent-gradient-reverse: linear-gradient(135deg, #00f0ff 0%, #0052ff 100%);
            --text-primary: #ffffff;
            --text-secondary: #cbd5e1;
            --text-muted: #7c8aa0;
            --text-cyan: #00f0ff;
            --border-default: rgba(0, 240, 255, 0.18);
            --border-hover: rgba(0, 240, 255, 0.55);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.35);
            --shadow-glow-strong: 0 0 35px rgba(0, 82, 255, 0.55);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-2xl: 96px;
            --font-display: 'Be Vietnam Pro', sans-serif;
            --font-body: 'Inter', sans-serif;
            --transition-fast: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-secondary);
            background-color: var(--bg-primary);
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(0, 82, 255, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 240, 255, 0.07) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 90%, rgba(0, 82, 255, 0.08) 0%, transparent 45%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--text-cyan);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: #66f5ff;
            text-decoration: none;
        }

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

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

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-display);
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 0.5em;
            font-weight: 800;
        }

        h1 {
            font-size: clamp(2rem, 4.5vw, 3.25rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.15;
        }

        h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            letter-spacing: -0.01em;
            line-height: 1.25;
        }

        h3 {
            font-size: clamp(1.15rem, 2vw, 1.4rem);
            font-weight: 700;
        }

        p {
            margin-bottom: 1rem;
        }

        .site-container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== HEADER ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 12px 0;
            transition: background var(--transition-base), border-color var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.94);
            border-bottom-color: rgba(0, 240, 255, 0.25);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

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

        .header-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
            flex-shrink: 0;
        }

        .header-logo-text {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 15px;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            max-width: 160px;
        }

        .header-logo-text span {
            display: block;
            font-size: 10px;
            font-weight: 600;
            color: var(--text-cyan);
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }

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

        .main-nav a {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.08);
        }

        .main-nav a.active {
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }

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

        .btn-login {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .btn-login:hover {
            color: var(--text-primary);
            border-color: rgba(0, 240, 255, 0.45);
            background: rgba(0, 240, 255, 0.06);
        }

        .btn-signup {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            padding: 8px 20px;
            border-radius: 8px;
            background: var(--accent-gradient);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
            transition: all var(--transition-fast);
            white-space: nowrap;
            border: none;
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.5);
            transform: translateY(-1px);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            font-size: 20px;
            color: var(--text-primary);
            padding: 8px;
            border-radius: 6px;
            background: rgba(0, 240, 255, 0.08);
            transition: background var(--transition-fast);
        }

        .nav-toggle:hover {
            background: rgba(0, 240, 255, 0.15);
        }

        /* ===== HERO ===== */
        .hero {
            position: relative;
            padding: var(--space-xl) 0 var(--space-lg);
            background:
                radial-gradient(ellipse at 70% 40%, rgba(0, 82, 255, 0.15) 0%, transparent 55%),
                radial-gradient(ellipse at 30% 80%, rgba(0, 240, 255, 0.06) 0%, transparent 45%);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 12px;
            font-weight: 700;
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 50px;
            padding: 6px 16px;
            margin-bottom: var(--space-md);
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .hero-badge i {
            font-size: 10px;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.4);
            }
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--space-md);
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: var(--space-md);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            padding: 13px 26px;
            border-radius: 10px;
            background: var(--accent-gradient);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.35);
            border: none;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.55);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 13px 24px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid rgba(0, 240, 255, 0.22);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            color: var(--text-primary);
            border-color: rgba(0, 240, 255, 0.45);
            background: rgba(0, 240, 255, 0.1);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-md);
            margin-top: var(--space-sm);
        }

        .hero-stat {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hero-stat-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-cyan);
            font-size: 15px;
            flex-shrink: 0;
        }

        .hero-stat .stat-number {
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.1;
            display: block;
        }

        .hero-stat .stat-label {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .hero-visual {
            position: relative;
            z-index: 1;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hero-visual-card {
            position: relative;
            width: 100%;
            max-width: 420px;
            aspect-ratio: 4/5;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-glass);
            border: 1px solid var(--border-default);
            box-shadow: var(--shadow-glow-strong);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: var(--space-lg) var(--space-md) var(--space-md);
            background-image: url('/assets/images/coverpic/cover-4.jpg');
            background-size: cover;
            background-position: center;
        }

        .hero-visual-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(8, 9, 15, 0.85) 75%, rgba(8, 9, 15, 0.95) 100%);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }

        .hero-visual-content {
            position: relative;
            z-index: 2;
            text-align: left;
        }

        .hero-visual-content h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 6px;
        }

        .hero-visual-content p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .hero-visual-actions {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .hero-visual-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 700;
            font-family: var(--font-display);
            padding: 8px 14px;
            border-radius: 7px;
            transition: all var(--transition-fast);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        .hero-visual-btn:hover {
            background: rgba(0, 240, 255, 0.12);
            border-color: rgba(0, 240, 255, 0.55);
        }

        /* ===== SECTION COMMON ===== */
        .section {
            padding: var(--space-xl) 0;
            position: relative;
        }

        .section-alt {
            background: rgba(13, 17, 30, 0.5);
            border-top: 1px solid rgba(0, 240, 255, 0.06);
            border-bottom: 1px solid rgba(0, 240, 255, 0.06);
        }

        .section-header {
            margin-bottom: var(--space-lg);
        }

        .section-header h2 {
            margin-bottom: 8px;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.7;
            max-width: 640px;
            margin-bottom: 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-family: var(--font-display);
            font-size: 11px;
            font-weight: 700;
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.07);
            border: 1px solid rgba(0, 240, 255, 0.18);
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        /* ===== STATS DASHBOARD ===== */
        .stats-dashboard {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }

        .stat-metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .stat-metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent-gradient);
            opacity: 0;
            transition: opacity var(--transition-fast);
        }

        .stat-metric-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .stat-metric-card:hover::before {
            opacity: 1;
        }

        .stat-metric-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-cyan);
            font-size: 18px;
            margin-bottom: 12px;
        }

        .stat-metric-number {
            font-family: var(--font-display);
            font-size: 32px;
            font-weight: 900;
            color: var(--text-primary);
            line-height: 1.1;
            letter-spacing: -0.01em;
            margin-bottom: 4px;
        }

        .stat-metric-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            line-height: 1.4;
        }

        .stat-metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 11px;
            font-weight: 600;
            color: #22c55e;
            margin-top: 6px;
        }

        /* ===== SERVICE MATRIX ===== */
        .service-matrix {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .service-card-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 14px;
        }

        .service-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            flex-shrink: 0;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
        }

        .service-card-title {
            font-family: var(--font-display);
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 0;
        }

        .service-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== COMPARISON TABLE ===== */
        .comparison-wrap {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            overflow: hidden;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .comparison-table {
            width: 100%;
            margin: 0;
            border-collapse: collapse;
        }

        .comparison-table th {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 700;
            color: var(--text-primary);
            text-align: left;
            padding: 16px 20px;
            background: rgba(0, 240, 255, 0.04);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            letter-spacing: 0.02em;
            text-transform: uppercase;
            white-space: nowrap;
        }

        .comparison-table td {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 14px 20px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.06);
            line-height: 1.5;
            vertical-align: middle;
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .comparison-table tr:hover td {
            background: rgba(0, 240, 255, 0.02);
        }

        .comparison-table .check-icon {
            color: #22c55e;
            font-size: 14px;
        }

        .comparison-table .warning-icon {
            color: #f59e0b;
            font-size: 14px;
        }

        .comparison-table .close-icon {
            color: #ef4444;
            font-size: 14px;
        }

        .table-badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            font-family: var(--font-display);
            padding: 3px 10px;
            border-radius: 50px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        .badge-green {
            background: rgba(34, 197, 94, 0.12);
            color: #22c55e;
            border: 1px solid rgba(34, 197, 94, 0.3);
        }

        .badge-cyan {
            background: rgba(0, 240, 255, 0.1);
            color: var(--text-cyan);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 850px;
        }

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

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 16px 20px;
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            text-align: left;
            transition: all var(--transition-fast);
            background: transparent;
            border: none;
            cursor: pointer;
        }

        .faq-question:hover {
            color: var(--text-cyan);
        }

        .faq-question .fa-chevron-down {
            font-size: 13px;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-question[aria-expanded="true"] .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--text-cyan);
        }

        .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

        .faq-answer.active {
            display: block;
        }

        /* ===== CTA FORM ===== */
        .cta-section {
            background:
                radial-gradient(ellipse at 50% 50%, rgba(0, 82, 255, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 30% 70%, rgba(0, 240, 255, 0.06) 0%, transparent 40%);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: var(--space-lg) var(--space-md);
            text-align: center;
        }

        .cta-section h2 {
            margin-bottom: 10px;
        }

        .cta-section p {
            max-width: 560px;
            margin: 0 auto var(--space-md);
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }

        .cta-form {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            max-width: 520px;
            margin: 0 auto;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border-radius: 10px;
            border: 1px solid rgba(0, 240, 255, 0.2);
            background: rgba(8, 9, 15, 0.7);
            color: var(--text-primary);
            font-family: var(--font-body);
            font-size: 14px;
            transition: all var(--transition-fast);
        }

        .cta-form input::placeholder {
            color: var(--text-muted);
            opacity: 0.7;
        }

        .cta-form input:focus {
            border-color: var(--text-cyan);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
            outline: none;
        }

        .cta-form .btn-primary {
            padding: 13px 28px;
            border-radius: 10px;
            white-space: nowrap;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: rgba(8, 9, 15, 0.9);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: var(--space-lg) 0 var(--space-md);
            margin-top: var(--space-xl);
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }

        .footer-logo-text {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 340px;
            margin-bottom: 0;
        }

        .footer-col-title {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            line-height: 1.4;
        }

        .footer-col-links a:hover {
            color: var(--text-cyan);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: var(--space-md);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-bottom span {
            font-size: 12px;
        }

        /* ===== FAB ===== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.7);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-cyan);
            font-size: 20px;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            transition: all var(--transition-base);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            opacity: 0.6;
        }

        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: var(--accent-gradient);
            z-index: -1;
            opacity: 0.7;
        }

        .fab:hover {
            opacity: 1;
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
            transform: scale(1.1);
        }

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

        .fab-notification {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #ef4444;
            border: 2px solid rgba(8, 9, 15, 0.9);
            animation: blink-notify 2s ease-in-out infinite;
        }

        @keyframes blink-notify {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }

            .hero-visual {
                order: 2;
            }

            .hero-content {
                order: 1;
            }

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

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

            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 10px;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding-top: 10px;
                border-top: 1px solid rgba(0, 240, 255, 0.08);
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                padding: 10px 14px;
                border-radius: 6px;
                text-align: left;
            }

            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .header-actions {
                gap: 6px;
            }

            .btn-login,
            .btn-signup {
                font-size: 12px;
                padding: 7px 12px;
            }

            .hero {
                padding: var(--space-lg) 0 var(--space-md);
            }

            .hero-stats {
                gap: 12px;
            }

            .section {
                padding: var(--space-lg) 0;
            }

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

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

            .comparison-table th,
            .comparison-table td {
                padding: 10px 12px;
                font-size: 12px;
            }

            .comparison-table th {
                font-size: 11px;
            }

            .cta-section {
                padding: var(--space-md) var(--space-sm);
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .fab {
                width: 46px;
                height: 46px;
                font-size: 17px;
                left: 12px;
                bottom: 80px;
            }
        }

        @media (max-width: 520px) {
            .site-container {
                padding-left: 14px;
                padding-right: 14px;
            }

            .hero-visual-card {
                max-width: 100%;
                aspect-ratio: 4/4.5;
            }

            .btn-primary,
            .btn-secondary {
                font-size: 13px;
                padding: 11px 18px;
            }

            .cta-form input {
                min-width: 100%;
            }

            .cta-form .btn-primary {
                width: 100%;
                justify-content: center;
            }

            .header-logo-text {
                font-size: 12px;
                max-width: 130px;
            }

            .header-logo-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
                border-radius: 8px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #08090f;
            --bg-secondary: #0d111e;
            --bg-card: rgba(13, 17, 30, 0.72);
            --bg-glass: rgba(8, 9, 15, 0.55);
            --accent-blue: #0052ff;
            --accent-cyan: #00f0ff;
            --accent-gradient: linear-gradient(135deg, #0052ff 0%, #00f0ff 100%);
            --accent-gradient-reverse: linear-gradient(135deg, #00f0ff 0%, #0052ff 100%);
            --text-primary: #ffffff;
            --text-secondary: #cbd5e1;
            --text-muted: #7c8aa0;
            --text-cyan: #00f0ff;
            --border-default: rgba(0, 240, 255, 0.18);
            --border-hover: rgba(0, 240, 255, 0.55);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.35);
            --shadow-glow-strong: 0 0 35px rgba(0, 82, 255, 0.55);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-2xl: 96px;
            --font-display: 'Be Vietnam Pro', sans-serif;
            --font-body: 'Inter', sans-serif;
            --transition-fast: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-secondary);
            background-color: var(--bg-primary);
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(0, 82, 255, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 240, 255, 0.07) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 90%, rgba(0, 82, 255, 0.08) 0%, transparent 45%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--text-cyan);
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        a:hover {
            color: #66f5ff;
            text-decoration: none;
        }

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

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

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

        .site-container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 12px 0;
            transition: background var(--transition-base), border-color var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.94);
            border-bottom-color: rgba(0, 240, 255, 0.25);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

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

        .header-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
            flex-shrink: 0;
        }

        .header-logo-text {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 15px;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            max-width: 160px;
        }

        .header-logo-text span {
            display: block;
            font-size: 10px;
            font-weight: 600;
            color: var(--text-cyan);
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }

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

        .main-nav a {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.08);
        }

        .main-nav a.active {
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.3);
        }

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

        .btn-login {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.08);
        }

        .btn-signup {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            padding: 10px 20px;
            border-radius: 8px;
            background: var(--accent-gradient);
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
        }

        .btn-signup:hover {
            color: #fff;
            box-shadow: 0 4px 24px rgba(0, 240, 255, 0.5);
            transform: translateY(-1px);
        }

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

        .nav-toggle:hover {
            background: rgba(0, 240, 255, 0.1);
        }

        /* Mobile nav */
        .mobile-nav {
            display: none;
            background: rgba(8, 9, 15, 0.96);
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: 12px 0;
            flex-direction: column;
            gap: 4px;
        }

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

        .mobile-nav a {
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 12px 20px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            display: block;
        }

        .mobile-nav a:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.08);
        }

        .mobile-nav a.active {
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.1);
        }

        /* Hero */
        .hero-section {
            position: relative;
            padding: var(--space-xl) 0 var(--space-2xl);
            background-image: 
                linear-gradient(180deg, rgba(8,9,15,0.85) 0%, rgba(8,9,15,0.65) 40%, rgba(8,9,15,0.9) 100%),
                url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center center;
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.25) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.18) 0%, transparent 55%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-xl);
            align-items: center;
        }

        .hero-content {
            text-align: left;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.35);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-cyan);
            letter-spacing: 0.04em;
            margin-bottom: var(--space-sm);
            text-transform: uppercase;
        }

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

        .hero-title {
            font-family: var(--font-display);
            font-size: clamp(28px, 4vw, 46px);
            font-weight: 900;
            color: var(--text-primary);
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: var(--space-sm);
        }

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

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: var(--space-md);
        }

        .hero-cta-row {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: var(--space-md);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            padding: 14px 28px;
            border-radius: 12px;
            background: var(--accent-gradient);
            transition: all var(--transition-fast);
            box-shadow: 0 4px 20px rgba(0, 82, 255, 0.4);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .btn-primary:hover {
            color: #fff;
            box-shadow: 0 6px 30px rgba(0, 240, 255, 0.55);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 16px;
            font-weight: 600;
            color: var(--text-cyan);
            padding: 14px 24px;
            border-radius: 12px;
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.4);
            transition: all var(--transition-fast);
        }

        .btn-outline:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.1);
            border-color: rgba(0, 240, 255, 0.7);
        }

        .hero-stats {
            display: flex;
            gap: var(--space-lg);
            flex-wrap: wrap;
            margin-top: var(--space-md);
        }

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

        .hero-stat-num {
            font-family: var(--font-display);
            font-size: 28px;
            font-weight: 800;
            color: var(--text-cyan);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .hero-panel {
            background: rgba(13, 17, 30, 0.7);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: var(--space-md);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        .hero-panel-title {
            font-family: var(--font-display);
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--space-sm);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hero-panel-title i {
            color: var(--text-cyan);
            font-size: 20px;
        }

        .hero-panel-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: var(--space-md);
            line-height: 1.6;
        }

        .progress-bar-wrapper {
            margin-bottom: var(--space-md);
        }

        .progress-bar-label {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .progress-bar-label span:last-child {
            color: var(--text-cyan);
        }

        .progress-bar {
            height: 10px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50px;
            overflow: hidden;
            position: relative;
        }

        .progress-bar-fill {
            height: 100%;
            background: var(--accent-gradient);
            border-radius: 50px;
            transition: width 1s ease;
            position: relative;
        }

        .progress-bar-fill::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            animation: progressShine 2s infinite;
        }

        @keyframes progressShine {
            0% { transform: translateX(-100%); }
            100% { transform: translateX(100%); }
        }

        .reward-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: var(--space-md);
        }

        .reward-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 10px;
            border: 1px solid rgba(0, 240, 255, 0.12);
            font-size: 14px;
            color: var(--text-secondary);
        }

        .reward-item i {
            color: var(--text-cyan);
            font-size: 16px;
            flex-shrink: 0;
        }

        .reward-item strong {
            color: var(--text-primary);
            font-weight: 600;
        }

        /* Mini CTA inside hero panel */
        .hero-panel .btn-small {
            display: block;
            text-align: center;
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            padding: 12px 20px;
            border-radius: 10px;
            background: var(--accent-gradient);
            transition: all var(--transition-fast);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
        }

        .hero-panel .btn-small:hover {
            color: #fff;
            box-shadow: 0 4px 24px rgba(0, 240, 255, 0.5);
        }

        /* Section General */
        .section {
            padding: var(--space-xl) 0;
            position: relative;
        }

        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-display);
            font-size: 12px;
            font-weight: 700;
            color: var(--text-cyan);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: var(--space-xs);
        }

        .section-title {
            font-family: var(--font-display);
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: var(--space-sm);
            line-height: 1.25;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            margin-bottom: var(--space-lg);
            line-height: 1.7;
        }

        /* Metrics Dashboard */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-sm);
            margin-top: var(--space-lg);
        }

        .metric-card {
            background: var(--bg-glass);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            transition: all var(--transition-fast);
            position: relative;
            overflow: hidden;
        }

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

        .metric-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }

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

        .metric-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-cyan);
            font-size: 20px;
            margin-bottom: var(--space-xs);
        }

        .metric-num {
            font-family: var(--font-display);
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .metric-change {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: #32cd32;
            margin-top: 6px;
        }

        .metric-change i {
            font-size: 10px;
        }

        /* Service Matrix */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
            margin-top: var(--space-lg);
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            position: relative;
        }

        .service-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-4px);
        }

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

        .service-card-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, rgba(13,17,30,0.9), transparent);
        }

        .service-card-body {
            padding: var(--space-md);
        }

        .service-card-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            color: #fff;
            background: var(--accent-gradient);
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: var(--space-xs);
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .service-card-title {
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .service-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: var(--space-sm);
        }

        .service-card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-card-meta span {
            font-size: 12px;
            font-weight: 500;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            padding: 4px 10px;
            border-radius: 6px;
        }

        /* Comparison Table */
        .comparison-wrapper {
            overflow-x: auto;
            margin-top: var(--space-lg);
            border-radius: var(--radius-md);
            border: 1px solid rgba(0, 240, 255, 0.15);
            background: var(--bg-glass);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 720px;
            font-size: 14px;
        }

        .comparison-table thead th {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 13px;
            color: var(--text-cyan);
            background: rgba(0, 240, 255, 0.06);
            padding: 14px 16px;
            text-align: left;
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .comparison-table tbody td {
            padding: 14px 16px;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
            vertical-align: middle;
        }

        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }

        .comparison-table tbody tr:hover td {
            background: rgba(0, 240, 255, 0.04);
        }

        .comparison-table .highlight-col {
            color: var(--text-cyan);
            font-weight: 600;
        }

        .comparison-table .badge-green {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: #32cd32;
            background: rgba(50, 205, 50, 0.1);
            padding: 4px 10px;
            border-radius: 6px;
            border: 1px solid rgba(50, 205, 50, 0.25);
        }

        .comparison-table .badge-orange {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: #ff9f00;
            background: rgba(255, 159, 0, 0.1);
            padding: 4px 10px;
            border-radius: 6px;
            border: 1px solid rgba(255, 159, 0, 0.25);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: var(--space-lg) auto 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--bg-glass);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            width: 100%;
            padding: 16px 20px;
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--text-cyan);
        }

        .faq-question i {
            color: var(--text-muted);
            font-size: 14px;
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--text-cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: var(--bg-glass);
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: var(--space-xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 800px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(0, 82, 255, 0.2) 0%, transparent 60%);
            transform: translate(-50%, -50%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-title {
            font-family: var(--font-display);
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 900;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: var(--space-sm);
        }

        .cta-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--space-md);
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 420px;
            margin: 0 auto;
        }

        .cta-form input {
            font-family: var(--font-body);
            font-size: 15px;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 10px;
            padding: 14px 16px;
            transition: all var(--transition-fast);
            outline: none;
        }

        .cta-form input::placeholder {
            color: var(--text-muted);
        }

        .cta-form input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
        }

        .cta-form button {
            font-family: var(--font-display);
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            padding: 14px 24px;
            border-radius: 10px;
            background: var(--accent-gradient);
            transition: all var(--transition-fast);
            box-shadow: 0 4px 20px rgba(0, 82, 255, 0.4);
        }

        .cta-form button:hover {
            box-shadow: 0 6px 28px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
        }

        .cta-payment-badges {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: var(--space-sm);
        }

        .cta-payment-badges span {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            padding: 6px 14px;
            border-radius: 50px;
            border: 1px solid rgba(0, 240, 255, 0.15);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .cta-payment-badges i {
            color: var(--text-cyan);
            font-size: 14px;
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-cyan);
            font-size: 22px;
            transition: all var(--transition-base);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
            position: relative;
            animation: fabBreath 2.5s ease-in-out infinite;
            cursor: pointer;
            border-image: linear-gradient(135deg, #0052ff, #00f0ff) 1;
            border: 2px solid;
            border-image: linear-gradient(135deg, #0052ff, #00f0ff) 1;
            -webkit-border-image: -webkit-linear-gradient(135deg, #0052ff, #00f0ff) 1;
        }

        @keyframes fabBreath {
            0%, 100% { opacity: 0.65; box-shadow: 0 0 12px rgba(0, 240, 255, 0.25); }
            50% { opacity: 1; box-shadow: 0 0 22px rgba(0, 240, 255, 0.55); }
        }

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.7);
        }

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

        .fab-support .notif-dot {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #ff007f;
            border-radius: 50%;
            border: 2px solid #08090f;
            animation: notifBlink 1.5s ease-in-out infinite;
        }

        @keyframes notifBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: var(--space-xl) 0 var(--space-md);
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: var(--space-sm);
        }

        .footer-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }

        .footer-logo-text {
            font-family: var(--font-display);
            font-size: 14px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-col-title {
            font-family: var(--font-display);
            font-size: 13px;
            font-weight: 700;
            color: var(--text-cyan);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: var(--space-sm);
        }

        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col-links a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-col-links a:hover {
            color: var(--text-cyan);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: var(--space-md);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .footer-bottom a:hover {
            color: var(--text-cyan);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }

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

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

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

            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
        }

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

            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .mobile-nav {
                display: none;
            }

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

            .header-inner {
                gap: 12px;
            }

            .header-logo-text {
                max-width: 120px;
                font-size: 13px;
            }

            .header-logo-text span {
                font-size: 8px;
            }

            .btn-login {
                font-size: 13px;
                padding: 6px 12px;
            }

            .btn-signup {
                font-size: 13px;
                padding: 8px 14px;
            }

            .hero-section {
                padding: var(--space-lg) 0 var(--space-xl);
            }

            .hero-title {
                font-size: clamp(24px, 6vw, 34px);
            }

            .hero-stats {
                gap: var(--space-md);
            }

            .hero-stat-num {
                font-size: 22px;
            }

            .section {
                padding: var(--space-lg) 0;
            }

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

            .metric-card {
                padding: var(--space-sm);
            }

            .metric-num {
                font-size: 24px;
            }

            .service-grid {
                grid-template-columns: 1fr;
                gap: var(--space-sm);
            }

            .service-card-img {
                height: 160px;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .fab-support {
                width: 46px;
                height: 46px;
                font-size: 18px;
                left: 12px;
                bottom: 80px;
            }

            .hero-panel {
                padding: var(--space-sm);
            }
        }

        @media (max-width: 520px) {
            .site-container {
                padding-left: 14px;
                padding-right: 14px;
            }

            .header-logo-text {
                font-size: 12px;
                max-width: 100px;
            }

            .btn-login {
                padding: 5px 8px;
                font-size: 12px;
            }

            .btn-signup {
                padding: 7px 10px;
                font-size: 12px;
            }

            .btn-primary,
            .btn-outline {
                font-size: 14px;
                padding: 12px 18px;
                width: 100%;
                justify-content: center;
            }

            .hero-cta-row {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-badge {
                font-size: 10px;
                padding: 4px 10px;
            }

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

            .metric-card {
                display: flex;
                align-items: center;
                gap: 12px;
                padding: 12px 14px;
            }

            .metric-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
                margin-bottom: 0;
                flex-shrink: 0;
            }

            .metric-num {
                font-size: 20px;
                margin-bottom: 0;
            }

            .metric-label {
                font-size: 11px;
            }

            .metric-change {
                margin-top: 2px;
                font-size: 10px;
            }

            .cta-title {
                font-size: 24px;
            }

            .comparison-wrapper {
                border-radius: var(--radius-sm);
            }

            .comparison-table {
                font-size: 12px;
                min-width: 600px;
            }

            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 10px 12px;
            }

            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }

            .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 13px;
            }
        }