/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-glass: rgba(13, 17, 30, 0.72);
            --bg-glass-light: rgba(255, 255, 255, 0.045);
            --bg-glass-border: rgba(0, 240, 255, 0.14);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-green: #CCFF00;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8A94A6;
            --border-color: rgba(203, 213, 225, 0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow-blue: 0 0 20px rgba(0, 82, 255, 0.35);
            --shadow-glow-cyan: 0 0 25px rgba(0, 240, 255, 0.3);
            --font-family: 'Inter', 'Be Vietnam Pro', 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

        a:hover {
            color: var(--accent-blue);
        }

        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;
        }

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

        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: 1rem;
        }

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

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
        }

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

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

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: var(--shadow-glow-blue);
            flex-shrink: 0;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.15;
        }

        .logo-text strong {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-text span {
            font-size: 0.68rem;
            color: var(--accent-cyan);
            font-weight: 500;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: 10px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .main-nav a i {
            font-size: 0.85rem;
            opacity: 0.7;
        }

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

        .btn-login {
            padding: 10px 18px;
            border-radius: 10px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--text-muted);
        }

        .btn-signup {
            padding: 10px 22px;
            border-radius: 10px;
            font-size: 0.88rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0066FF);
            box-shadow: var(--shadow-glow-blue);
            border: 1px solid rgba(0, 82, 255, 0.5);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 82, 255, 0.55);
            background: linear-gradient(135deg, #0066FF, var(--accent-cyan));
        }

        .btn-signup:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow-blue);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--text-primary);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

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

        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(8, 9, 15, 0.96);
            backdrop-filter: blur(20px);
            padding: 20px 24px 30px;
            border-bottom: 1px solid var(--border-color);
            z-index: 999;
            gap: 12px;
            flex-direction: column;
            align-items: stretch;
            transform: translateY(-10px);
            opacity: 0;
            pointer-events: none;
            transition: all var(--transition-base);
        }

        .mobile-nav.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-nav a {
            padding: 14px 18px;
            border-radius: 12px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border-color: rgba(0, 240, 255, 0.25);
        }

        .mobile-nav .btn-login,
        .mobile-nav .btn-signup {
            display: block;
            text-align: center;
            padding: 14px;
            margin-top: 4px;
        }

        /* ============ HERO SECTION ============ */
        .hero-section {
            position: relative;
            padding: calc(var(--header-height) + 60px) 0 80px;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 620px;
            display: flex;
            align-items: center;
            isolation: isolate;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 9, 15, 0.88) 0%, rgba(13, 17, 30, 0.78) 45%, rgba(8, 9, 15, 0.92) 100%);
            z-index: -1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 82, 255, 0.15) 0%, transparent 60%), radial-gradient(ellipse at 75% 50%, rgba(0, 240, 255, 0.08) 0%, transparent 55%);
            z-index: -1;
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .hero-content {
            max-width: 600px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.25);
            letter-spacing: 0.04em;
            margin-bottom: 22px;
        }

        .hero-badge i {
            font-size: 0.75rem;
            animation: pulse-dot 2s ease-in-out infinite;
        }

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

        .hero-title {
            font-size: clamp(1.7rem, 3.2vw, 2.6rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: #fff;
            margin-bottom: 20px;
            text-wrap: pretty;
        }

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

        .hero-subtitle {
            font-size: 1.02rem;
            line-height: 1.65;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 550px;
            text-wrap: pretty;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 32px;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 32px;
            border-radius: 14px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0066FF);
            border: 1px solid rgba(0, 82, 255, 0.5);
            box-shadow: var(--shadow-glow-blue);
            transition: all var(--transition-base);
        }

        .btn-hero-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 40px rgba(0, 82, 255, 0.6);
            background: linear-gradient(135deg, #0066FF, var(--accent-cyan));
        }

        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 28px;
            border-radius: 14px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
        }

        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

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

        .hero-stat-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
        }

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

        .hero-progress-card {
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--bg-glass-border);
            border-radius: var(--radius-xl);
            padding: 32px 28px 28px;
            box-shadow: var(--shadow-md);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 22px;
            position: relative;
        }

        .hero-progress-card::before {
            content: '';
            position: absolute;
            inset: -1px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.25), rgba(0, 82, 255, 0.2), transparent 60%);
            z-index: -1;
            pointer-events: none;
        }

        .progress-ring-wrapper {
            position: relative;
            width: 160px;
            height: 160px;
        }

        .progress-ring {
            width: 160px;
            height: 160px;
            transform: rotate(-90deg);
        }

        .progress-ring circle {
            fill: none;
            stroke-width: 10;
            stroke-linecap: round;
            transition: stroke-dashoffset 1.5s ease-out;
        }

        .progress-ring-bg {
            stroke: rgba(255, 255, 255, 0.1);
        }

        .progress-ring-fg {
            stroke: url(#progressGradient);
            stroke-dasharray: 377;
            stroke-dashoffset: 377;
            transition: stroke-dashoffset 1.8s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .progress-ring-text {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
        }

        .progress-ring-text strong {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .progress-ring-text span {
            font-size: 0.72rem;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.05em;
        }

        .hero-tier-list {
            width: 100%;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .hero-tier-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 18px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }

        .hero-tier-item:hover {
            background: rgba(0, 240, 255, 0.06);
            border-color: rgba(0, 240, 255, 0.3);
        }

        .hero-tier-item .tier-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-tier-item .tier-icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .tier-icon.blue { background: rgba(0, 82, 255, 0.15); color: var(--accent-blue); }
        .tier-icon.cyan { background: rgba(0, 240, 255, 0.15); color: var(--accent-cyan); }
        .tier-icon.green { background: rgba(204, 255, 0, 0.15); color: var(--accent-green); }

        .hero-tier-item .tier-detail {
            display: flex;
            flex-direction: column;
        }

        .hero-tier-item .tier-name {
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
        }

        .hero-tier-item .tier-desc {
            font-size: 0.72rem;
            color: var(--text-muted);
        }

        .hero-tier-item .tier-badge {
            font-size: 0.7rem;
            font-weight: 700;
            color: var(--accent-cyan);
            padding: 5px 12px;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            white-space: nowrap;
        }

        /* ============ SECTION COMMON ============ */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-header {
            margin-bottom: 48px;
            text-align: left;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.6vw, 2.1rem);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 16px;
            text-wrap: pretty;
        }

        .section-desc {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 650px;
        }

        /* ============ DIRECTORY SECTION ============ */
        .directory-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .directory-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .directory-card {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            cursor: pointer;
            position: relative;
        }

        .directory-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: 0 14px 40px rgba(0, 0, 0, 0.4), var(--shadow-glow-cyan);
        }

        .directory-card .card-img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .directory-card:hover .card-img {
            transform: scale(1.04);
        }

        .directory-card .card-body {
            padding: 20px 18px;
        }

        .directory-card .card-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .directory-card .card-body p {
            font-size: 0.83rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        /* ============ VALUE / COMPARISON SECTION ============ */
        .value-section {
            background: var(--bg-primary);
        }

        .value-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .value-card {
            padding: 28px 24px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
        }

        .value-card:hover {
            background: rgba(0, 82, 255, 0.06);
            border-color: rgba(0, 82, 255, 0.3);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow-blue);
        }

        .value-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }

        .value-icon.blue { background: rgba(0, 82, 255, 0.15); color: var(--accent-blue); }
        .value-icon.cyan { background: rgba(0, 240, 255, 0.12); color: var(--accent-cyan); }
        .value-icon.green { background: rgba(204, 255, 0, 0.1); color: var(--accent-green); }

        .value-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .value-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ============ NEWS SECTION (CMS) ============ */
        .news-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 36px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .news-item {
            padding: 22px 24px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
        }

        .news-item:hover {
            background: rgba(0, 240, 255, 0.05);
            border-color: rgba(0, 240, 255, 0.25);
            transform: translateX(4px);
        }

        .news-item .news-title {
            display: inline-block;
            font-size: 1.02rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.4;
            transition: color var(--transition-fast);
        }

        .news-item .news-title:hover {
            color: var(--accent-cyan);
        }

        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 8px;
        }

        .news-item .news-cat {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent-cyan);
            padding: 4px 10px;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .news-item .news-date {
            font-size: 0.76rem;
            color: var(--text-muted);
        }

        .news-item .news-summary {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

        .news-item .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 10px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-cyan);
            transition: all var(--transition-fast);
        }

        .news-item .btn-read-more:hover {
            color: #fff;
            gap: 10px;
        }

        .empty-state {
            padding: 40px 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.95rem;
            background: rgba(255, 255, 255, 0.03);
            border: 1px dashed var(--border-color);
            border-radius: var(--radius-md);
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-sidebar .sidebar-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .news-sidebar .sidebar-title i {
            color: var(--accent-cyan);
        }

        .recommend-card {
            display: flex;
            gap: 14px;
            padding: 16px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
        }

        .recommend-card:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(0, 82, 255, 0.3);
        }

        .recommend-card img {
            width: 80px;
            height: 80px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .recommend-card .rec-info h4 {
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .recommend-card .rec-info p {
            font-size: 0.76rem;
            color: var(--text-muted);
            line-height: 1.45;
        }

        /* ============ TIMELINE SECTION ============ */
        .timeline-section {
            background: var(--bg-primary);
        }

        .timeline-wrap {
            display: flex;
            flex-direction: column;
            gap: 18px;
            max-width: 720px;
        }

        .timeline-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
        }

        .timeline-item:hover {
            background: rgba(0, 240, 255, 0.05);
            border-color: rgba(0, 240, 255, 0.3);
            transform: translateX(6px);
        }

        .timeline-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            flex-shrink: 0;
            margin-top: 6px;
        }

        .timeline-dot.blue { background: var(--accent-blue); box-shadow: 0 0 12px rgba(0, 82, 255, 0.6); }
        .timeline-dot.cyan { background: var(--accent-cyan); box-shadow: 0 0 12px rgba(0, 240, 255, 0.6); }
        .timeline-dot.green { background: var(--accent-green); box-shadow: 0 0 12px rgba(204, 255, 0, 0.6); }
        .timeline-dot.pink { background: var(--accent-pink); box-shadow: 0 0 12px rgba(255, 0, 127, 0.6); }

        .timeline-item .tl-content h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .timeline-item .tl-content p {
            font-size: 0.83rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ============ OFFER TIERS SECTION ============ */
        .offers-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .offers-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .offer-card {
            padding: 32px 26px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .offer-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
        }

        .offer-card.highlight {
            border-color: rgba(0, 240, 255, 0.35);
            background: rgba(0, 240, 255, 0.06);
            box-shadow: var(--shadow-glow-cyan);
        }

        .offer-card .offer-ribbon {
            position: absolute;
            top: 16px;
            right: -32px;
            transform: rotate(45deg);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #fff;
            font-size: 0.68rem;
            font-weight: 700;
            padding: 5px 40px;
            letter-spacing: 0.05em;
        }

        .offer-card .offer-name {
            font-size: 1.1rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
        }

        .offer-card .offer-price {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 14px;
        }

        .offer-card .offer-price span {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .offer-card .offer-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 18px;
        }

        .offer-card ul {
            list-style: none;
            margin-bottom: 22px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .offer-card ul li {
            font-size: 0.83rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .offer-card ul li i {
            color: var(--accent-green);
            font-size: 0.75rem;
        }

        .btn-offer {
            display: block;
            width: 100%;
            padding: 14px;
            border-radius: 12px;
            font-size: 0.9rem;
            font-weight: 700;
            text-align: center;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0066FF);
            border: 1px solid rgba(0, 82, 255, 0.5);
            box-shadow: var(--shadow-glow-blue);
            transition: all var(--transition-base);
        }

        .btn-offer:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(0, 82, 255, 0.55);
        }

        .btn-offer.outline {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            box-shadow: none;
        }

        .btn-offer.outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
            box-shadow: var(--shadow-glow-cyan);
        }

        /* ============ GETTING STARTED SECTION ============ */
        .started-section {
            background: var(--bg-primary);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .step-card {
            padding: 26px 22px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            text-align: center;
            transition: all var(--transition-base);
        }

        .step-card:hover {
            background: rgba(0, 82, 255, 0.06);
            border-color: rgba(0, 82, 255, 0.3);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow-blue);
        }

        .step-number {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
        }

        .step-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .step-card p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ============ FAQ SECTION ============ */
        .faq-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
        }

        .faq-list {
            max-width: 800px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item.active {
            border-color: rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.04);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding: 20px 22px;
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

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

        .faq-question .faq-toggle {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--text-secondary);
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .faq-item.active .faq-toggle {
            transform: rotate(180deg);
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ============ LEAD FORM SECTION ============ */
        .lead-section {
            background: var(--bg-primary);
        }

        .lead-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .lead-info {
            padding-top: 8px;
        }

        .lead-info h2 {
            font-size: 1.75rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .lead-info p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 20px;
        }

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

        .lead-benefits li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.88rem;
            color: var(--text-secondary);
        }

        .lead-benefits li i {
            color: var(--accent-green);
            font-size: 0.8rem;
        }

        .lead-form-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            border: 1px solid var(--bg-glass-border);
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            box-shadow: var(--shadow-md);
        }

        .lead-form-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .lead-form-card .form-sub {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 22px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 0.83rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 13px 16px;
            border-radius: 12px;
            font-size: 0.9rem;
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
            box-shadow: var(--shadow-glow-cyan);
        }

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

        .btn-submit {
            width: 100%;
            padding: 16px;
            border-radius: 14px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0066FF);
            border: 1px solid rgba(0, 82, 255, 0.5);
            box-shadow: var(--shadow-glow-blue);
            transition: all var(--transition-base);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(0, 82, 255, 0.55);
        }

        .form-note {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 14px;
            text-align: center;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #06070C;
            border-top: 1px solid var(--border-color);
            padding: 50px 0 28px;
        }

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

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 12px;
            line-height: 1.6;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

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

        .footer-col ul a {
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 0.76rem;
            color: var(--text-muted);
        }

        .footer-bottom .copyright a {
            color: var(--accent-cyan);
        }

        /* ============ FAB ============ */
        .fab-fixed {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
        }

        .fab-btn {
            position: relative;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 20px;
            border-radius: 50px;
            background: rgba(8, 9, 15, 0.72);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1.5px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.78), rgba(8, 9, 15, 0.78)), linear-gradient(135deg, var(--accent-green), var(--accent-blue), var(--accent-cyan));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            opacity: 0.65;
            transition: all var(--transition-base);
            min-height: 50px;
            min-width: 50px;
        }

        .fab-btn:hover {
            opacity: 1;
            transform: scale(1.06);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
        }

        .fab-btn:active {
            transform: scale(0.96);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.35);
        }

        .fab-btn .fab-icon {
            font-size: 1.1rem;
            animation: fab-breathe 3s ease-in-out infinite;
        }

        .fab-btn .fab-label {
            white-space: nowrap;
        }

        .fab-btn .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent-green);
            border: 2px solid rgba(8, 9, 15, 0.9);
            animation: fab-breathe 2s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.55; transform: scale(1.12); }
        }

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

            .value-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }

            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .hero-content {
                max-width: 100%;
            }

            .hero-progress-card {
                max-width: 500px;
                margin: 0 auto;
            }

            .offers-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }

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

            .news-layout {
                grid-template-columns: 1fr;
            }

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

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

            .nav-toggle {
                display: flex;
            }

            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                display: none;
            }

            .mobile-nav {
                display: flex;
            }

            section {
                padding: 56px 0;
            }

            .hero-section {
                min-height: 500px;
                padding: calc(var(--header-height) + 40px) 0 56px;
            }

            .hero-title {
                font-size: 1.6rem;
            }

            .hero-subtitle {
                font-size: 0.92rem;
            }

            .hero-stats {
                gap: 16px;
            }

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

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

            .offers-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

            .fab-fixed {
                left: 12px;
                bottom: 80px;
            }

            .fab-btn .fab-label {
                display: none;
            }

            .fab-btn {
                padding: 14px;
                border-radius: 50%;
            }
        }

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

            .hero-title {
                font-size: 1.4rem;
            }

            .hero-cta-group {
                flex-direction: column;
            }

            .btn-hero-primary,
            .btn-hero-secondary {
                justify-content: center;
                text-align: center;
            }

            .hero-stats {
                flex-direction: column;
                gap: 10px;
            }

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

            .section-header {
                margin-bottom: 30px;
            }

            .offer-card {
                padding: 24px 20px;
            }

            .lead-form-card {
                padding: 24px 20px;
            }

            .progress-ring-wrapper,
            .progress-ring {
                width: 130px;
                height: 130px;
            }

            .progress-ring fg {
                stroke-dasharray: 307;
                stroke-dashoffset: 307;
            }

            .progress-ring-text strong {
                font-size: 1.5rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --bg-glass: rgba(20, 28, 48, 0.6);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-hover: #3D7BFF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8A94A8;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-blue: rgba(0, 82, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.25);
            --shadow-blue: 0 0 22px rgba(0, 82, 255, 0.3);
            --font-main: 'Be Vietnam Pro', 'Inter', sans-serif;
            --font-body: 'Inter', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --content-max: 720px;
        }

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

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

        body {
            font-family: var(--font-body);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: #66F5FF;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        :focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }

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

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.18);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            min-height: 70px;
        }

        .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--text-white);
            min-width: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .logo-wrapper:hover .logo-icon {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.7);
            transform: scale(1.06);
        }

        .logo-icon i {
            font-size: 1.15rem;
            color: #fff;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.3;
            min-width: 0;
        }

        .logo-text strong {
            font-family: var(--font-main);
            font-size: 1.05rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .logo-text span {
            font-size: 0.72rem;
            color: var(--text-silver);
            letter-spacing: 0.04em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

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

        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 14px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-silver);
            text-decoration: none;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav a i {
            font-size: 0.78rem;
            opacity: 0.8;
        }

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

        .main-nav a.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.14);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.25);
            border: 1px solid rgba(0, 240, 255, 0.35);
        }

        .mobile-nav-toggle {
            display: none;
            font-size: 1.3rem;
            color: var(--text-white);
            background: none;
            border: none;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }

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

        /* ============ ARTICLE HERO ============ */
        .article-hero {
            position: relative;
            padding: 120px 0 50px;
            background: linear-gradient(170deg, #080A12 0%, #0B1120 40%, #0D111E 100%);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -8%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: var(--text-silver);
            text-decoration: none;
            transition: color var(--transition);
        }

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

        .breadcrumb .sep {
            color: var(--accent-cyan);
            opacity: 0.7;
        }

        .breadcrumb .current {
            color: var(--accent-cyan);
            font-weight: 500;
        }

        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            margin-bottom: 18px;
        }

        .meta-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .meta-badge.category {
            background: rgba(0, 82, 255, 0.18);
            color: #A8C5FF;
            border: 1px solid rgba(0, 82, 255, 0.4);
        }

        .meta-badge.date {
            background: rgba(0, 240, 255, 0.12);
            color: #A8F5FF;
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .meta-badge.read-time {
            background: rgba(148, 163, 184, 0.12);
            color: var(--text-silver);
            border: 1px solid rgba(148, 163, 184, 0.3);
        }

        .article-hero h1 {
            font-family: var(--font-main);
            font-size: 2.15rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.015em;
            color: var(--text-white);
            margin-bottom: 16px;
            max-width: 850px;
        }

        .article-hero .hero-excerpt {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 720px;
            line-height: 1.65;
        }

        /* ============ ARTICLE MAIN LAYOUT ============ */
        .article-main {
            padding: 50px 0 60px;
            background: var(--bg-primary);
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 300px;
            gap: 44px;
            align-items: start;
        }

        .article-body-wrapper {
            min-width: 0;
        }

        .article-body {
            max-width: var(--content-max);
            width: 100%;
            font-size: 1.02rem;
            color: #E2E8F0;
            line-height: 1.7;
        }

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

        .article-body h2 {
            font-family: var(--font-main);
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 32px 0 14px;
            letter-spacing: -0.01em;
            position: relative;
            padding-left: 16px;
        }

        .article-body h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: linear-gradient(180deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 2px;
        }

        .article-body h3 {
            font-family: var(--font-main);
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-white);
            margin: 26px 0 12px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 18px 22px;
        }

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 8px;
            color: #D1D5DB;
        }

        .article-body ul li::before {
            content: '◆';
            color: var(--accent-cyan);
            font-size: 0.6rem;
            position: absolute;
            left: -18px;
            top: 8px;
        }

        .article-body ol {
            counter-reset: item;
        }

        .article-body ol li {
            counter-increment: item;
        }

        .article-body ol li::before {
            content: counter(item) '.';
            color: var(--accent-cyan);
            font-weight: 700;
            position: absolute;
            left: -22px;
            top: 0;
            font-size: 0.9rem;
        }

        .article-body blockquote {
            margin: 20px 0;
            padding: 18px 22px;
            background: rgba(0, 240, 255, 0.05);
            border-left: 4px solid var(--accent-cyan);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: #CDE9F5;
        }

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

        .article-body a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-decoration-color: rgba(0, 240, 255, 0.4);
            text-underline-offset: 3px;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 22px 0;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(148, 163, 184, 0.2);
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-glass);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(148, 163, 184, 0.2);
            color: var(--text-silver);
        }

        .article-not-found p {
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

        .article-not-found a {
            display: inline-block;
            padding: 12px 24px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            transition: box-shadow var(--transition);
        }

        .article-not-found a:hover {
            box-shadow: var(--shadow-glow);
        }

        /* ============ SIDEBAR ============ */
        .article-sidebar {
            position: sticky;
            top: 90px;
            display: flex;
            flex-direction: column;
            gap: 22px;
        }

        .sidebar-card {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(148, 163, 184, 0.2);
            border-radius: var(--radius-md);
            padding: 22px;
            box-shadow: var(--shadow-card);
            transition: border-color var(--transition);
        }

        .sidebar-card:hover {
            border-color: rgba(0, 240, 255, 0.35);
        }

        .sidebar-card h3 {
            font-family: var(--font-main);
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h3 i {
            color: var(--accent-cyan);
            font-size: 0.85rem;
        }

        .sidebar-card p {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

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

        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 9px;
            font-size: 0.84rem;
            color: var(--text-silver);
            text-decoration: none;
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .sidebar-list a:hover {
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-cyan);
        }

        .sidebar-list a i {
            font-size: 0.72rem;
            color: var(--accent-blue);
            flex-shrink: 0;
        }

        /* ============ DATA METRICS SECTION ============ */
        .data-metrics-section {
            padding: 56px 0;
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .section-heading {
            margin-bottom: 32px;
        }

        .section-heading h2 {
            font-family: var(--font-main);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.01em;
            margin-bottom: 8px;
            position: relative;
            display: inline-block;
        }

        .section-heading h2::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 50px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 2px;
        }

        .section-heading p {
            color: var(--text-silver);
            font-size: 0.95rem;
            max-width: 600px;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--bg-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(0, 240, 255, 0.22);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: left;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            opacity: 0;
            transition: opacity var(--transition);
        }

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

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

        .metric-card .metric-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(0, 82, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
        }

        .metric-card .metric-icon i {
            font-size: 1.05rem;
            color: var(--accent-cyan);
        }

        .metric-card .metric-number {
            font-family: var(--font-main);
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-card .metric-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ============ REGULATION COMPARISON ============ */
        .regulation-section {
            padding: 56px 0;
            background: var(--bg-primary);
        }

        .regulation-compare {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 10px;
        }

        .regulation-item {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(148, 163, 184, 0.2);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition);
            position: relative;
        }

        .regulation-item:hover {
            border-color: var(--border-blue);
            box-shadow: 0 0 22px rgba(0, 82, 255, 0.22);
        }

        .regulation-item h3 {
            font-family: var(--font-main);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 9px;
        }

        .regulation-item h3 i {
            color: var(--accent-cyan);
            font-size: 0.9rem;
        }

        .regulation-item p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.65;
        }

        .regulation-item .tag-required {
            display: inline-block;
            margin-top: 12px;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.74rem;
            font-weight: 600;
            background: rgba(220, 38, 38, 0.18);
            color: #FFA8A8;
            border: 1px solid rgba(220, 38, 38, 0.4);
        }

        .regulation-item .tag-optional {
            display: inline-block;
            margin-top: 12px;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.74rem;
            font-weight: 600;
            background: rgba(0, 240, 255, 0.1);
            color: #A8F5FF;
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 56px 0;
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
            margin-top: 10px;
        }

        .faq-item {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(148, 163, 184, 0.18);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition);
        }

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

        .faq-item summary {
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-family: var(--font-main);
            font-size: 0.98rem;
            color: var(--text-white);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            list-style: none;
            transition: color var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            color: var(--accent-cyan);
        }

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--accent-cyan);
            transition: transform var(--transition);
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
        }

        .faq-item .faq-body {
            padding: 0 22px 20px;
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.65;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(160deg, #0A0E1A 0%, #0D1428 60%, #0F1B35 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 20%;
            right: -5%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: 10%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-box {
            position: relative;
            z-index: 2;
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: 0 0 38px rgba(0, 240, 255, 0.15);
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 30px;
            align-items: center;
        }

        .cta-content h2 {
            font-family: var(--font-main);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .cta-content p {
            color: var(--text-silver);
            font-size: 0.95rem;
            max-width: 500px;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            padding: 14px 28px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.95rem;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            text-decoration: none;
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.3);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .cta-btn:hover {
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.55);
            transform: translateY(-2px);
            color: #fff;
        }

        .cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
        }

        /* ============ FAB ============ */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 950;
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(8, 9, 15, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.6), rgba(8, 9, 15, 0.6)), linear-gradient(135deg, #4ADE80, var(--accent-blue), var(--accent-cyan));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            border-radius: 50px;
            padding: 12px 18px;
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            opacity: 0.6;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all var(--transition);
            min-width: 48px;
            min-height: 48px;
            animation: fab-breathe 3.5s ease-in-out infinite;
        }

        .fab-support i {
            font-size: 1.15rem;
            color: var(--accent-cyan);
        }

        .fab-support .fab-label {
            display: inline-block;
            max-width: 120px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .fab-support:hover {
            opacity: 1;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.75);
            transform: scale(1.05);
        }

        .fab-support:active {
            transform: scale(0.95);
            box-shadow: 0 0 20px rgba(255, 0, 127, 0.6);
        }

        .fab-support .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #FF007F;
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.7);
            animation: fab-blink 2s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%,
            100% {
                opacity: 0.6;
            }
            50% {
                opacity: 0.9;
            }
        }

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

        /* ============ FOOTER ============ */
        .site-footer {
            background: #06070E;
            border-top: 1px solid rgba(0, 240, 255, 0.14);
            padding: 50px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand {
            min-width: 0;
        }

        .footer-brand .logo-wrapper {
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 0.84rem;
            color: var(--text-muted);
            line-height: 1.65;
            max-width: 340px;
        }

        .footer-col h4 {
            font-family: var(--font-main);
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 1px;
        }

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

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-silver);
            text-decoration: none;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
            transform: translateX(3px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.15);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .footer-bottom .copyright {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .footer-bottom .copyright a {
            color: var(--text-silver);
            text-decoration: none;
        }

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

        .footer-bottom .compliance-badges {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.74rem;
            color: var(--text-muted);
        }

        .footer-bottom .compliance-badges span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 10px;
            border-radius: 20px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .footer-bottom .compliance-badges i {
            color: var(--accent-cyan);
            font-size: 0.7rem;
        }

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

            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }

            .article-sidebar .sidebar-card {
                flex: 1;
                min-width: 240px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                padding: 12px 0;
                gap: 10px;
            }

            .main-nav {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 4px;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: thin;
                scrollbar-color: rgba(0, 240, 255, 0.3) transparent;
            }

            .main-nav::-webkit-scrollbar {
                height: 3px;
            }

            .main-nav::-webkit-scrollbar-thumb {
                background: rgba(0, 240, 255, 0.3);
                border-radius: 3px;
            }

            .main-nav a {
                font-size: 0.78rem;
                padding: 7px 12px;
                flex-shrink: 0;
            }

            .article-hero {
                padding: 105px 0 38px;
            }

            .article-hero h1 {
                font-size: 1.6rem;
            }

            .article-hero .hero-excerpt {
                font-size: 0.92rem;
            }

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

            .regulation-compare {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .cta-box {
                grid-template-columns: 1fr;
                text-align: left;
                padding: 28px 22px;
            }

            .cta-btn {
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

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

            .fab-support {
                bottom: 80px;
                left: 10px;
                padding: 10px 14px;
                font-size: 0.78rem;
            }

            .fab-support .fab-label {
                max-width: 80px;
            }
        }

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

            .header-inner {
                gap: 6px;
                min-height: 60px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }

            .logo-text strong {
                font-size: 0.88rem;
            }

            .logo-text span {
                font-size: 0.64rem;
            }

            .main-nav a {
                padding: 6px 10px;
                font-size: 0.72rem;
                gap: 5px;
            }

            .main-nav a i {
                font-size: 0.65rem;
            }

            .article-hero h1 {
                font-size: 1.35rem;
            }

            .article-hero .hero-excerpt {
                font-size: 0.86rem;
            }

            .article-hero-meta {
                gap: 8px;
            }

            .meta-badge {
                font-size: 0.7rem;
                padding: 5px 10px;
            }

            .article-main {
                padding: 32px 0 40px;
            }

            .article-body {
                font-size: 0.92rem;
            }

            .article-body h2 {
                font-size: 1.2rem;
            }

            .article-body h3 {
                font-size: 1.05rem;
            }

            .section-heading h2 {
                font-size: 1.3rem;
            }

            .section-heading p {
                font-size: 0.85rem;
            }

            .metric-card .metric-number {
                font-size: 1.4rem;
            }

            .regulation-item {
                padding: 18px;
            }

            .regulation-item h3 {
                font-size: 0.92rem;
            }

            .faq-item summary {
                font-size: 0.88rem;
                padding: 15px 16px;
            }

            .faq-item .faq-body {
                padding: 0 16px 16px;
                font-size: 0.84rem;
            }

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

            .footer-brand {
                grid-column: auto;
            }

            .footer-bottom .copyright {
                font-size: 0.75rem;
                text-align: center;
            }

            .fab-support {
                bottom: 70px;
                left: 8px;
                min-height: 44px;
                min-width: 44px;
                border-radius: 40px;
            }

            .fab-support .fab-label {
                display: none;
            }

            .fab-support i {
                font-size: 1.05rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --section-bg: #0A0C17;
            --card-bg: rgba(255, 255, 255, 0.04);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.1);
            --electric-blue: #0052FF;
            --neon-cyan: #00F0FF;
            --neon-cyan-soft: rgba(0, 240, 255, 0.12);
            --electric-blue-soft: rgba(0, 82, 255, 0.15);
            --gradient-main: linear-gradient(135deg, #0052FF 0%, #00C6FF 55%, #00F0FF 100%);
            --gradient-glow: linear-gradient(135deg, rgba(0, 82, 255, 0.35) 0%, rgba(0, 240, 255, 0.3) 100%);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8A94A6;
            --text-faint: #5A6478;
            --gold-accent: #FFD700;
            --red-accent: #FF3B30;
            --green-accent: #00E676;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
            --shadow-glow-blue: 0 0 15px rgba(0, 82, 255, 0.45), 0 0 40px rgba(0, 240, 255, 0.2);
            --shadow-glow-cyan: 0 0 12px rgba(0, 240, 255, 0.4), 0 0 35px rgba(0, 240, 255, 0.15);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --font-primary: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --line-height-body: 1.6;
            --line-height-heading: 1.25;
            --container-max: 1180px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: var(--line-height-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition-base);
        }

        input,
        select,
        textarea {
            font-family: inherit;
            outline: none;
            border: none;
            transition: all var(--transition-base);
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: var(--line-height-heading);
            font-weight: 700;
        }

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

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--header-height);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.96);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            min-width: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-white);
            box-shadow: var(--shadow-glow-blue);
            flex-shrink: 0;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .logo-text strong {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            letter-spacing: -0.01em;
        }

        .logo-text span {
            font-size: 0.7rem;
            color: var(--text-muted);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

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

        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 15px;
            border-radius: 10px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-silver);
            transition: all var(--transition-base);
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .main-nav a i {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.08);
        }

        .main-nav a:hover i {
            color: var(--neon-cyan);
        }

        .main-nav a.active {
            color: var(--text-white);
            background: var(--electric-blue-soft);
            border-color: rgba(0, 82, 255, 0.3);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.15);
        }

        .main-nav a.active i {
            color: var(--neon-cyan);
        }

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

        .btn-nav-login {
            background: transparent;
            color: var(--text-silver);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 9px 16px;
            border-radius: 10px;
            border: 1px solid transparent;
            transition: all var(--transition-base);
        }

        .btn-nav-login:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .btn-nav-signup {
            background: var(--gradient-main);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 700;
            padding: 9px 18px;
            border-radius: 10px;
            box-shadow: 0 2px 12px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-base);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .btn-nav-signup:hover {
            box-shadow: var(--shadow-glow-blue);
            transform: translateY(-1px);
        }

        .btn-nav-signup:active {
            transform: translateY(0) scale(0.97);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-subtle);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            color: var(--text-white);
            font-size: 1.2rem;
            flex-shrink: 0;
            cursor: pointer;
        }

        /* ============ FAB ============ */
        .fab-btn {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 950;
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1.5px solid transparent;
            border-radius: 50px;
            padding: 12px 20px;
            cursor: pointer;
            opacity: 0.7;
            transition: all var(--transition-base);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
            background-clip: padding-box;
        }

        .fab-btn::before {
            content: '';
            position: absolute;
            inset: -1.5px;
            border-radius: 50px;
            background: linear-gradient(90deg, #0052FF, #00F0FF, #0052FF);
            background-size: 200% 100%;
            z-index: -1;
            animation: fab-border-flow 3s linear infinite;
            opacity: 0.7;
        }

        @keyframes fab-border-flow {
            0% { background-position: 0% 0%; }
            100% { background-position: 200% 0%; }
        }

        .fab-btn .fab-icon {
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon-cyan);
            font-size: 1rem;
            animation: fab-pulse 2s ease-in-out infinite;
        }

        @keyframes fab-pulse {
            0%, 100% { opacity: 1; filter: drop-shadow(0 0 4px rgba(0, 240, 255, 0.6)); }
            50% { opacity: 0.7; filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.9)); }
        }

        .fab-btn .fab-label {
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.02em;
        }

        .fab-btn .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 10px;
            height: 10px;
            background: var(--red-accent);
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(255, 59, 48, 0.7);
            animation: fab-badge-blink 1.6s ease-in-out infinite;
        }

        @keyframes fab-badge-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        .fab-btn:hover {
            opacity: 1;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.5), 0 0 50px rgba(0, 240, 255, 0.2);
            transform: scale(1.05);
        }

        .fab-btn:active {
            transform: scale(0.95);
            box-shadow: 0 0 20px rgba(255, 0, 127, 0.5);
        }

        /* ============ HERO ============ */
        .hero-section {
            position: relative;
            padding-top: calc(var(--header-height) + 60px);
            padding-bottom: 60px;
            background: linear-gradient(180deg, #05070D 0%, var(--secondary-bg) 40%, var(--primary-bg) 100%);
            overflow: hidden;
            min-height: 80vh;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -150px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -180px;
            left: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

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

        .hero-breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

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

        .hero-breadcrumb a:hover {
            color: var(--neon-cyan);
        }

        .hero-breadcrumb .sep {
            color: var(--text-faint);
            font-size: 0.7rem;
        }

        .hero-breadcrumb .current {
            color: var(--neon-cyan);
            font-weight: 600;
        }

        .hero-content h1 {
            font-size: clamp(1.8rem, 3.2vw, 2.6rem);
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            line-height: 1.2;
        }

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

        .hero-content .hero-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 540px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--gradient-main);
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            padding: 14px 26px;
            border-radius: 12px;
            box-shadow: var(--shadow-glow-blue);
            transition: all var(--transition-base);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .btn-primary:hover {
            box-shadow: 0 0 25px rgba(0, 82, 255, 0.6), 0 0 60px rgba(0, 240, 255, 0.3);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0) scale(0.97);
        }

        .btn-primary i {
            font-size: 0.9rem;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 14px 24px;
            border-radius: 12px;
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            transition: all var(--transition-base);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(219, 245, 255, 0.25);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0) scale(0.97);
        }

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

        .hero-panel {
            position: relative;
            width: 100%;
            max-width: 460px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: var(--glass-bg);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 82, 255, 0.1);
        }

        .hero-panel-img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            display: block;
        }

        .hero-panel-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(8, 9, 15, 0.88) 100%);
            display: flex;
            align-items: flex-end;
            padding: 24px;
            pointer-events: none;
        }

        .hero-panel-info {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .hero-panel-info .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 82, 255, 0.25);
            border: 1px solid rgba(0, 82, 255, 0.4);
            color: var(--text-white);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            width: fit-content;
        }

        .hero-panel-info strong {
            font-size: 1.15rem;
            color: var(--text-white);
            font-weight: 700;
        }

        .hero-panel-info span {
            font-size: 0.85rem;
            color: var(--text-silver);
        }

        .hero-floating-chip {
            position: absolute;
            bottom: -18px;
            right: -10px;
            background: rgba(8, 9, 15, 0.9);
            backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            border-radius: 14px;
            padding: 12px 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            box-shadow: var(--shadow-md), 0 0 20px rgba(0, 240, 255, 0.15);
        }

        .hero-floating-chip .chip-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .hero-floating-chip .chip-text {
            display: flex;
            flex-direction: column;
        }

        .hero-floating-chip .chip-text strong {
            font-size: 0.85rem;
            color: var(--text-white);
        }

        .hero-floating-chip .chip-text span {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* ============ METRICS DASHBOARD ============ */
        .metrics-section {
            padding: 70px 0;
            background: var(--section-bg);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 24px 22px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .metric-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-main);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .metric-card:hover {
            border-color: rgba(0, 240, 255, 0.25);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 240, 255, 0.08);
            transform: translateY(-3px);
        }

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

        .metric-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--electric-blue-soft);
            border: 1px solid rgba(0, 82, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon-cyan);
            font-size: 1.1rem;
            margin-bottom: 14px;
        }

        .metric-value {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.01em;
            margin-bottom: 4px;
            line-height: 1.2;
        }

        .metric-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ============ CONDITIONS MATRIX ============ */
        .conditions-section {
            padding: 80px 0;
            background: var(--primary-bg);
        }

        .section-header {
            margin-bottom: 40px;
            text-align: left;
        }

        .section-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--neon-cyan);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 12px;
            background: var(--neon-cyan-soft);
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .section-header h2 {
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .section-header .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 620px;
            line-height: 1.7;
        }

        .conditions-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: start;
        }

        .conditions-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .condition-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: all var(--transition-base);
        }

        .condition-item:hover {
            border-color: rgba(0, 240, 255, 0.2);
            background: rgba(255, 255, 255, 0.07);
        }

        .condition-num {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 0.9rem;
            flex-shrink: 0;
            box-shadow: 0 2px 10px rgba(0, 82, 255, 0.3);
        }

        .condition-content {
            flex: 1;
        }

        .condition-content h3 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .condition-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .condition-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-md);
            position: relative;
            height: 100%;
            min-height: 380px;
        }

        .condition-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 380px;
        }

        .condition-image .image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 28px 22px;
            background: linear-gradient(180deg, transparent 0%, rgba(8, 9, 15, 0.9) 100%);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .condition-image .image-overlay strong {
            font-size: 1rem;
            color: var(--text-white);
        }

        .condition-image .image-overlay span {
            font-size: 0.78rem;
            color: var(--text-silver);
        }

        /* ============ COMPARISON ============ */
        .comparison-section {
            padding: 80px 0;
            background: var(--section-bg);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

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

        .compare-card {
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            transition: all var(--transition-base);
        }

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

        .compare-card.legal {
            border-color: rgba(0, 230, 118, 0.25);
            background: rgba(0, 230, 118, 0.04);
        }

        .compare-card.legal:hover {
            box-shadow: 0 4px 24px rgba(0, 230, 118, 0.1);
        }

        .compare-card.illegal {
            border-color: rgba(255, 59, 48, 0.25);
            background: rgba(255, 59, 48, 0.04);
        }

        .compare-card.illegal:hover {
            box-shadow: 0 4px 24px rgba(255, 59, 48, 0.1);
        }

        .compare-card .compare-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }

        .compare-card .compare-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .compare-card.legal .compare-icon {
            background: rgba(0, 230, 118, 0.15);
            border: 1px solid rgba(0, 230, 118, 0.3);
            color: var(--green-accent);
        }

        .compare-card.illegal .compare-icon {
            background: rgba(255, 59, 48, 0.15);
            border: 1px solid rgba(255, 59, 48, 0.3);
            color: var(--red-accent);
        }

        .compare-card .compare-header h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .compare-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

        .compare-list li i {
            margin-top: 3px;
            flex-shrink: 0;
            font-size: 0.85rem;
        }

        .compare-card.legal .compare-list li i {
            color: var(--green-accent);
        }

        .compare-card.illegal .compare-list li i {
            color: var(--red-accent);
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 80px 0;
            background: var(--primary-bg);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            background: transparent;
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 600;
            text-align: left;
            width: 100%;
            border: none;
            outline: none;
            transition: all var(--transition-fast);
        }

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

        .faq-question .faq-toggle {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            color: var(--neon-cyan);
            font-size: 0.8rem;
            transition: all var(--transition-base);
        }

        .faq-item.open .faq-toggle {
            transform: rotate(180deg);
            background: var(--electric-blue-soft);
            border-color: rgba(0, 82, 255, 0.4);
            color: var(--neon-cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ============ CTA / FORM ============ */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(180deg, var(--section-bg) 0%, var(--secondary-bg) 100%);
            border-top: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -150px;
            right: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .cta-info {
            text-align: left;
        }

        .cta-info h2 {
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .cta-info p {
            font-size: 0.98rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 22px;
            max-width: 480px;
        }

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

        .cta-benefits li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.88rem;
            color: var(--text-silver);
        }

        .cta-benefits li i {
            color: var(--green-accent);
            font-size: 0.85rem;
        }

        .cta-form-wrapper {
            background: var(--glass-bg);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            padding: 32px 30px;
            box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 82, 255, 0.08);
        }

        .cta-form-wrapper h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .cta-form-wrapper .form-subtitle {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 22px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-silver);
            margin-bottom: 6px;
            letter-spacing: 0.01em;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--glass-border);
            color: var(--text-white);
            font-size: 0.9rem;
            transition: all var(--transition-base);
        }

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

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: rgba(0, 240, 255, 0.4);
            background: rgba(255, 255, 255, 0.07);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.12);
        }

        .form-group select {
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238A94A6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            background-size: 16px;
            padding-right: 40px;
        }

        .form-group select option {
            background: var(--secondary-bg);
            color: var(--text-white);
        }

        .btn-submit {
            width: 100%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: var(--gradient-main);
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            padding: 14px 20px;
            border-radius: 12px;
            box-shadow: var(--shadow-glow-blue);
            transition: all var(--transition-base);
            border: 1px solid rgba(0, 240, 255, 0.3);
            cursor: pointer;
            margin-top: 8px;
        }

        .btn-submit:hover {
            box-shadow: 0 0 25px rgba(0, 82, 255, 0.6), 0 0 60px rgba(0, 240, 255, 0.3);
            transform: translateY(-2px);
        }

        .btn-submit:active {
            transform: translateY(0) scale(0.97);
        }

        .form-note {
            font-size: 0.72rem;
            color: var(--text-faint);
            margin-top: 12px;
            text-align: center;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #05070D;
            padding: 60px 0 24px;
            border-top: 1px solid var(--border-subtle);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }

        .footer-brand .logo-wrapper {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

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

        .footer-col ul li a {
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: all var(--transition-fast);
        }

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

        .footer-col ul li a.active {
            color: var(--neon-cyan);
            font-weight: 600;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .copyright {
            font-size: 0.78rem;
            color: var(--text-faint);
        }

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

        .copyright a:hover {
            color: var(--neon-cyan);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

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

            .hero-content .hero-desc {
                max-width: 100%;
            }

            .hero-visual {
                justify-content: flex-start;
            }

            .hero-panel {
                max-width: 100%;
            }

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

            .conditions-layout {
                grid-template-columns: 1fr;
            }

            .condition-image {
                min-height: 280px;
            }

            .condition-image img {
                min-height: 280px;
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-info {
                text-align: left;
            }

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

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }

            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.97);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-subtle);
                transform: translateY(-120%);
                transition: transform var(--transition-slow);
                z-index: 999;
            }

            .main-nav.mobile-open {
                transform: translateY(0);
            }

            .main-nav a {
                padding: 13px 16px;
                font-size: 0.9rem;
                border-radius: 10px;
                justify-content: flex-start;
            }

            .mobile-toggle {
                display: flex;
            }

            .nav-actions {
                display: none;
            }

            .main-nav.mobile-open .nav-actions-mobile {
                display: flex;
                gap: 10px;
                margin-top: 12px;
                flex-direction: column;
            }

            .nav-actions-mobile {
                display: none;
            }

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

            .hero-section {
                padding-top: calc(var(--header-height) + 40px);
                padding-bottom: 40px;
                min-height: auto;
            }

            .hero-panel-img {
                height: 220px;
            }

            .hero-floating-chip {
                position: static;
                margin-top: 16px;
                width: 100%;
                justify-content: center;
            }

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

            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                justify-content: center;
            }

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

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

            .section-header {
                text-align: left;
            }

            .fab-btn {
                left: 12px;
                bottom: 80px;
                padding: 10px 14px;
            }

            .fab-btn .fab-label {
                display: none;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

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

            .logo-text strong {
                font-size: 0.8rem;
            }

            .logo-text span {
                font-size: 0.62rem;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
                border-radius: 10px;
            }

            .hero-content h1 {
                font-size: 1.5rem;
            }

            .hero-content .hero-desc {
                font-size: 0.92rem;
            }

            .metric-card {
                padding: 18px 16px;
            }

            .metric-value {
                font-size: 1.4rem;
            }

            .condition-item {
                padding: 16px;
                gap: 12px;
            }

            .condition-num {
                width: 32px;
                height: 32px;
                font-size: 0.8rem;
                border-radius: 8px;
            }

            .compare-card {
                padding: 20px 18px;
            }

            .cta-form-wrapper {
                padding: 24px 20px;
            }

            .faq-question {
                padding: 15px 18px;
                font-size: 0.88rem;
            }

            .faq-answer {
                padding: 0 18px;
            }

            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card-glass: rgba(13, 17, 30, 0.72);
            --bg-card-hover: rgba(13, 17, 30, 0.88);
            --blue-accent: #0052FF;
            --cyan-accent: #00F0FF;
            --border-glow: rgba(0, 240, 255, 0.25);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #7C8BA1;
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.45);
            --shadow-blue: 0 0 25px rgba(0, 82, 255, 0.38);
            --radius-md: 14px;
            --radius-lg: 22px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 32px;
            --spacing-xl: 56px;
            --spacing-hero: 80px;
            --font-body: 'Segoe UI', 'Inter', 'Arial', sans-serif;
            --font-display: 'Segoe UI', 'Inter', 'Arial', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-silver);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-display);
            color: var(--text-white);
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        a {
            color: var(--cyan-accent);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: #00d0e8;
        }

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

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

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
            margin-left: auto;
            margin-right: auto;
        }

        .container-fluid-custom {
            max-width: 1440px;
            padding-left: 32px;
            padding-right: 32px;
            margin-left: auto;
            margin-right: auto;
        }

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

        /* ===== HEADER & NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            background: rgba(8, 9, 15, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.14);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.45);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 76px;
            flex-wrap: wrap;
        }

        .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            text-decoration: none;
        }

        .logo-wrapper:hover {
            text-decoration: none;
        }

        .logo-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.32), rgba(0, 240, 255, 0.18));
            border: 1px solid rgba(0, 240, 255, 0.35);
            border-radius: 14px;
            font-size: 22px;
            color: var(--cyan-accent);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.22);
            transition: var(--transition);
        }

        .logo-wrapper:hover .logo-icon {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.42);
            transform: scale(1.04);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            gap: 2px;
            line-height: 1.2;
        }

        .logo-text strong {
            font-size: 18px;
            color: var(--text-white);
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        .logo-text span {
            font-size: 12px;
            color: var(--cyan-accent);
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

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

        .main-nav a {
            padding: 9px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-silver);
            display: flex;
            align-items: center;
            gap: 7px;
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .main-nav a i {
            font-size: 13px;
            opacity: 0.75;
            transition: var(--transition);
        }

        .main-nav a:hover {
            color: var(--cyan-accent);
            background: rgba(0, 240, 255, 0.08);
            border-color: rgba(0, 240, 255, 0.2);
        }

        .main-nav a:hover i {
            opacity: 1;
        }

        .main-nav a.active {
            color: var(--cyan-accent);
            background: rgba(0, 240, 255, 0.13);
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.18);
        }

        .main-nav a.active i {
            opacity: 1;
        }

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

        .btn-login {
            color: var(--text-silver);
            font-size: 14px;
            font-weight: 500;
            padding: 9px 18px;
            border-radius: 50px;
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover {
            color: var(--cyan-accent);
            background: rgba(255, 255, 255, 0.04);
            text-decoration: none;
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--blue-accent), #0080FF);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 50px;
            text-decoration: none;
            box-shadow: 0 0 22px rgba(0, 82, 255, 0.45);
            transition: var(--transition);
            white-space: nowrap;
            border: 1px solid rgba(0, 240, 255, 0.25);
        }

        .btn-signup:hover {
            background: linear-gradient(135deg, #0066FF, #00A0FF);
            color: #fff;
            box-shadow: 0 0 32px rgba(0, 82, 255, 0.65);
            transform: translateY(-1px);
            text-decoration: none;
        }

        .navbar-toggle {
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            color: var(--cyan-accent);
            font-size: 20px;
            transition: var(--transition);
        }

        .navbar-toggle:hover {
            background: rgba(0, 240, 255, 0.2);
        }

        /* ===== HERO ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 100px;
            padding-bottom: 60px;
            background-image: linear-gradient(rgba(8, 9, 15, 0.82), rgba(8, 9, 15, 0.92)), url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at top right, rgba(0, 82, 255, 0.22), transparent 55%), radial-gradient(ellipse at bottom left, rgba(0, 240, 255, 0.16), transparent 45%);
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.32);
            color: var(--cyan-accent);
            font-size: 13px;
            font-weight: 500;
            padding: 7px 16px;
            border-radius: 50px;
            margin-bottom: 22px;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.16);
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero h1 {
            font-size: clamp(32px, 5.5vw, 58px);
            line-height: 1.16;
            margin-bottom: 20px;
            color: var(--text-white);
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        .hero-description {
            font-size: 17px;
            line-height: 1.7;
            color: var(--text-silver);
            max-width: 680px;
            margin-bottom: 30px;
        }

        .hero-group-panel {
            background: rgba(13, 17, 30, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 240, 255, 0.22);
            border-radius: var(--radius-lg);
            padding: 30px 32px;
            box-shadow: 0 0 40px rgba(0, 82, 255, 0.2), 0 24px 50px rgba(0, 0, 0, 0.5);
            margin-bottom: 32px;
            max-width: 620px;
        }

        .group-count {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 20px;
        }

        .group-avatars {
            display: flex;
            align-items: center;
        }

        .group-avatars .avatar-circle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            margin-right: -10px;
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.3);
        }

        .group-avatars .avatar-circle:last-child {
            margin-right: 0;
        }

        .group-count-text {
            font-size: 15px;
            color: var(--text-silver);
            font-weight: 500;
        }

        .group-count-text strong {
            color: var(--cyan-accent);
            font-weight: 700;
            font-size: 17px;
        }

        .hero-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            background: linear-gradient(135deg, #0052FF, #007AFF);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 50px;
            border: 1px solid rgba(0, 240, 255, 0.3);
            box-shadow: 0 0 28px rgba(0, 82, 255, 0.5);
            transition: var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: linear-gradient(135deg, #0066FF, #0088FF);
            color: #fff;
            box-shadow: 0 0 40px rgba(0, 82, 255, 0.7);
            transform: translateY(-2px);
            text-decoration: none;
        }

        .btn-secondary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            background: transparent;
            color: var(--cyan-accent);
            font-size: 15px;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 50px;
            border: 1px solid rgba(0, 240, 255, 0.4);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.15);
            transition: var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-secondary-custom:hover {
            background: rgba(0, 240, 255, 0.1);
            color: var(--cyan-accent);
            border-color: rgba(0, 240, 255, 0.6);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.32);
            transform: translateY(-2px);
            text-decoration: none;
        }

        /* ===== METRICS SECTION ===== */
        .metrics-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
            padding: 42px 0;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .metric-item {
            text-align: center;
            padding: 28px 18px;
            background: rgba(13, 17, 30, 0.6);
            border: 1px solid rgba(0, 240, 255, 0.16);
            border-radius: var(--radius-md);
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }

        .metric-item:hover {
            border-color: rgba(0, 240, 255, 0.38);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.14);
            transform: translateY(-3px);
        }

        .metric-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--cyan-accent);
            line-height: 1.1;
            letter-spacing: -0.02em;
            margin-bottom: 8px;
            text-shadow: 0 0 22px rgba(0, 240, 255, 0.35);
        }

        .metric-label {
            font-size: 14px;
            color: var(--text-silver);
            font-weight: 500;
            line-height: 1.4;
        }

        /* ===== SERVICE MATRIX ===== */
        .services-section {
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
        }

        .services-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: -200px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.14), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .section-header {
            margin-bottom: 40px;
            position: relative;
            z-index: 2;
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--cyan-accent);
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            padding: 6px 14px;
            border-radius: 50px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(28px, 4.5vw, 42px);
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.7;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            position: relative;
            z-index: 2;
        }

        .service-card {
            display: flex;
            gap: 20px;
            padding: 28px;
            background: var(--bg-card-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: var(--radius-lg);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(105deg, transparent, rgba(0, 240, 255, 0.05), transparent);
            transition: all 0.8s ease;
        }

        .service-card:hover::before {
            left: 100%;
        }

        .service-card:hover {
            border-color: rgba(0, 240, 255, 0.42);
            box-shadow: 0 0 34px rgba(0, 82, 255, 0.25);
            transform: translateY(-4px);
        }

        .service-icon {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.3), rgba(0, 240, 255, 0.16));
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 16px;
            font-size: 24px;
            color: var(--cyan-accent);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
        }

        .service-info {
            flex: 1;
            min-width: 0;
        }

        .service-info h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .service-info p {
            font-size: 15px;
            color: var(--text-silver);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .service-tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 14px;
        }

        .service-tag {
            font-size: 12px;
            font-weight: 500;
            color: var(--cyan-accent);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.22);
            padding: 4px 12px;
            border-radius: 20px;
        }

        /* ===== COMPARISON SECTION ===== */
        .comparison-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
        }

        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: stretch;
        }

        .comparison-card {
            padding: 32px;
            border-radius: var(--radius-lg);
            transition: var(--transition);
        }

        .comparison-card.before {
            background: rgba(220, 38, 38, 0.07);
            border: 1px solid rgba(220, 38, 38, 0.28);
        }

        .comparison-card.after {
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid rgba(0, 240, 255, 0.32);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.14);
        }

        .comparison-card .comparison-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 18px;
        }

        .comparison-card.before .comparison-badge {
            color: #FF6B6B;
            background: rgba(220, 38, 38, 0.15);
            border: 1px solid rgba(220, 38, 38, 0.3);
        }

        .comparison-card.after .comparison-badge {
            color: var(--cyan-accent);
            background: rgba(0, 240, 255, 0.14);
            border: 1px solid rgba(0, 240, 255, 0.35);
        }

        .comparison-card h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .comparison-card ul {
            display: flex;
            flex-direction: column;
            gap: 13px;
        }

        .comparison-card ul li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-silver);
            line-height: 1.55;
        }

        .comparison-card ul li i {
            margin-top: 4px;
            flex-shrink: 0;
            font-size: 16px;
        }

        .comparison-card.before ul li i {
            color: #FF6B6B;
        }

        .comparison-card.after ul li i {
            color: var(--cyan-accent);
        }

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

        .faq-wrapper {
            max-width: 840px;
            margin-left: auto;
            margin-right: auto;
        }

        .accordion-custom {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .accordion-item-custom {
            background: var(--bg-card-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

        .accordion-item-custom:hover {
            border-color: rgba(0, 240, 255, 0.35);
        }

        .accordion-item-custom.open {
            border-color: rgba(0, 240, 255, 0.45);
            box-shadow: 0 0 26px rgba(0, 240, 255, 0.16);
        }

        .accordion-btn-custom {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            text-align: left;
            color: var(--text-white);
            font-size: 16px;
            font-weight: 600;
            background: transparent;
            border: none;
            transition: var(--transition);
        }

        .accordion-btn-custom:hover {
            color: var(--cyan-accent);
        }

        .accordion-btn-custom i {
            flex-shrink: 0;
            font-size: 14px;
            color: var(--cyan-accent);
            transition: transform 0.35s ease;
        }

        .accordion-item-custom.open .accordion-btn-custom i {
            transform: rotate(180deg);
        }

        .accordion-content-custom {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

        .accordion-item-custom.open .accordion-content-custom {
            max-height: 400px;
            padding-bottom: 22px;
        }

        .accordion-content-custom p {
            font-size: 15px;
            color: var(--text-silver);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== CTA FORM SECTION ===== */
        .cta-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -150px;
            left: 50%;
            transform: translateX(-50%);
            width: 700px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(0, 82, 255, 0.2), transparent 65%);
            pointer-events: none;
        }

        .cta-panel {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-card-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(0, 240, 255, 0.22);
            border-radius: var(--radius-lg);
            padding: 44px;
            box-shadow: 0 0 50px rgba(0, 82, 255, 0.2);
        }

        .cta-info h2 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .cta-info p {
            font-size: 16px;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .cta-benefit-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cta-benefit-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-silver);
        }

        .cta-benefit-list li i {
            color: var(--cyan-accent);
            font-size: 13px;
        }

        .cta-form-wrapper {
            background: rgba(8, 9, 15, 0.55);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: var(--radius-md);
            padding: 28px;
        }

        .cta-form-wrapper h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
        }

        .form-group-custom {
            margin-bottom: 16px;
        }

        .form-group-custom label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-silver);
            margin-bottom: 7px;
        }

        .form-control-custom {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 10px;
            padding: 13px 16px;
            color: var(--text-white);
            font-size: 15px;
            transition: var(--transition);
            font-family: inherit;
        }

        .form-control-custom::placeholder {
            color: rgba(203, 213, 225, 0.5);
        }

        .form-control-custom:focus {
            outline: none;
            border-color: rgba(0, 240, 255, 0.5);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.18);
            background: rgba(255, 255, 255, 0.08);
        }

        .btn-submit-custom {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: linear-gradient(135deg, #0052FF, #007AFF);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 15px 28px;
            border-radius: 50px;
            border: 1px solid rgba(0, 240, 255, 0.3);
            box-shadow: 0 0 28px rgba(0, 82, 255, 0.5);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-submit-custom:hover {
            background: linear-gradient(135deg, #0066FF, #0088FF);
            box-shadow: 0 0 40px rgba(0, 82, 255, 0.7);
            transform: translateY(-2px);
        }

        .form-note {
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            margin-top: 14px;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #06070C;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: 52px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .logo-wrapper {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

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

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--cyan-accent);
            text-decoration: none;
        }

        .footer-col ul li a.active {
            color: var(--cyan-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

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

        .copyright a {
            color: var(--cyan-accent);
            text-decoration: none;
        }

        .copyright a:hover {
            color: #00d0e8;
            text-decoration: none;
        }

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

        /* ===== FAB ===== */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .fab-btn {
            position: relative;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.75);
            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;
            font-size: 22px;
            color: var(--cyan-accent);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4), 0 4px 16px rgba(0, 0, 0, 0.5);
            transition: var(--transition);
            cursor: pointer;
            opacity: 0.62;
            animation: fab-breathe 3s ease-in-out infinite;
            text-decoration: none;
            border: 2px solid rgba(0, 240, 255, 0.5);
        }

        .fab-btn:hover {
            opacity: 1;
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.75), 0 6px 24px rgba(0, 0, 0, 0.55);
            transform: scale(1.08);
            color: #00F0FF;
            text-decoration: none;
        }

        .fab-btn:active {
            transform: scale(0.92);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.35);
        }

        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            background: #FF007F;
            color: #fff;
            font-size: 9px;
            font-weight: 700;
            padding: 3px 7px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            box-shadow: 0 0 12px rgba(255, 0, 127, 0.7);
            animation: blink-neon 1.6s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%, 100% { box-shadow: 0 0 18px rgba(0, 240, 255, 0.4), 0 4px 16px rgba(0, 0, 0, 0.5); }
            50% { box-shadow: 0 0 32px rgba(0, 240, 255, 0.65), 0 4px 16px rgba(0, 0, 0, 0.5); }
        }

        @keyframes blink-neon {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.35; }
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .cta-panel {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero h1 {
                font-size: clamp(28px, 5vw, 44px);
            }
            .header-inner {
                flex-wrap: nowrap;
            }
            .auth-buttons {
                display: flex;
                gap: 6px;
            }
            .btn-login {
                padding: 8px 12px;
                font-size: 13px;
            }
            .btn-signup {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .container-fluid-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .hero {
                min-height: auto;
                padding-top: 110px;
                padding-bottom: 48px;
            }
            .navbar-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                padding: 16px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
                box-shadow: 0 24px 40px rgba(0, 0, 0, 0.55);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 14px 18px;
                font-size: 15px;
                border-radius: 10px;
            }
            .auth-buttons {
                display: flex;
                gap: 6px;
            }
            .btn-login {
                padding: 7px 12px;
                font-size: 12px;
            }
            .btn-signup {
                padding: 7px 12px;
                font-size: 12px;
            }
            .hero-group-panel {
                padding: 22px 20px;
            }
            .btn-primary-custom,
            .btn-secondary-custom {
                padding: 12px 22px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .hero-btn-group {
                flex-direction: column;
                width: 100%;
            }
            .group-count {
                flex-direction: column;
                align-items: flex-start;
            }
            .service-card {
                padding: 20px;
                gap: 14px;
            }
            .comparison-card {
                padding: 24px 20px;
            }
            .cta-panel {
                padding: 28px 22px;
                gap: 28px;
            }
            .cta-form-wrapper {
                padding: 22px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .fab-btn {
                width: 46px;
                height: 46px;
                font-size: 19px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 26px;
            }
            .hero-description {
                font-size: 15px;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .metric-number {
                font-size: 32px;
            }
            .metric-item {
                padding: 20px 14px;
            }
            .service-info h3 {
                font-size: 17px;
            }
            .comparison-card h3 {
                font-size: 18px;
            }
            .accordion-btn-custom {
                padding: 16px 18px;
                font-size: 14px;
            }
            .accordion-content-custom {
                padding: 0 18px;
            }
            .cta-info h2 {
                font-size: 24px;
            }
            .logo-text strong {
                font-size: 15px;
            }
            .logo-text span {
                font-size: 10px;
            }
            .logo-icon {
                width: 40px;
                height: 40px;
                font-size: 18px;
            }
            .header-inner {
                min-height: 64px;
                gap: 8px;
            }
            .btn-login {
                padding: 6px 8px;
                font-size: 11px;
            }
            .btn-signup {
                padding: 6px 10px;
                font-size: 11px;
            }
            .navbar-toggle {
                width: 38px;
                height: 38px;
                font-size: 17px;
            }
            .main-nav {
                top: 64px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #08090F;
            --bg-navy: #0D111E;
            --bg-glass: rgba(13, 17, 30, 0.82);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-hover: #3D7BFF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8B95A9;
            --border-glass: rgba(0, 240, 255, 0.22);
            --border-soft: rgba(255, 255, 255, 0.08);
            --glow-blue: 0 0 24px rgba(0, 82, 255, 0.45);
            --glow-cyan: 0 0 32px rgba(0, 240, 255, 0.35);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 48px rgba(0, 82, 255, 0.3);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-main: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-deep);
            color: var(--text-white);
            line-height: 1.65;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            position: relative;
            min-height: 100vh;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(0, 82, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 80%, rgba(0, 240, 255, 0.05) 0%, transparent 55%),
                linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-navy) 100%);
            z-index: -2;
        }

        body::after {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image:
                linear-gradient(rgba(0, 240, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, 0.025) 1px, transparent 1px);
            background-size: 42px 42px;
            z-index: -1;
            pointer-events: none;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-main);
        }

        /* ========== NAVBAR ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-soft);
            padding: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: nowrap;
            padding: 0.75rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-logo {
            flex-shrink: 0;
            margin-right: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--text-white);
        }
        .nav-logo .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .nav-logo .logo-text strong {
            font-size: 0.85rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .nav-logo .logo-text span {
            font-size: 0.65rem;
            font-weight: 500;
            color: var(--accent-cyan);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.55rem 1rem;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-silver);
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .main-nav a i {
            font-size: 0.75rem;
            color: var(--accent-cyan);
        }
        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--border-glass);
        }
        .main-nav a.active {
            color: var(--text-white);
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.25), rgba(0, 240, 255, 0.15));
            border-color: var(--border-glass);
            box-shadow: var(--glow-cyan);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-left: auto;
            flex-shrink: 0;
        }
        .btn-login {
            padding: 0.55rem 1.1rem;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--text-silver);
            background: transparent;
            border: 1px solid var(--border-soft);
            white-space: nowrap;
            transition: var(--transition);
        }
        .btn-login:hover {
            color: var(--text-white);
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }
        .btn-signup {
            padding: 0.55rem 1.3rem;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
            white-space: nowrap;
            transition: var(--transition);
        }
        .btn-signup:hover {
            box-shadow: var(--glow-blue);
            transform: translateY(-1px);
        }
        .btn-signup:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(0, 82, 255, 0.4);
        }

        /* ========== CONTAINER ========== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ========== HERO / BANNER ========== */
        .hero {
            position: relative;
            padding: 4rem 0 3rem;
            background:
                linear-gradient(135deg, rgba(0, 82, 255, 0.12) 0%, rgba(0, 240, 255, 0.05) 100%),
                url('/assets/images/backpic/back-2.jpg') center center/cover no-repeat;
            background-blend-mode: overlay;
            border-bottom: 1px solid var(--border-soft);
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8,9,15,0.6) 0%, rgba(8,9,15,0.9) 100%);
            z-index: 0;
        }
        .hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 2.5rem;
            flex-wrap: wrap;
        }
        .hero-content {
            flex: 1 1 55%;
            min-width: 300px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1rem;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-glass);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 1.2rem;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero h1 {
            font-size: clamp(1.9rem, 4vw, 2.8rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 1.2rem;
        }
        .hero h1 span {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 1.8rem;
        }
        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 1.8rem;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            box-shadow: var(--glow-blue);
            transition: var(--transition);
        }
        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 1.8rem;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: transparent;
            border: 1px solid var(--border-glass);
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--accent-cyan);
            box-shadow: var(--glow-cyan);
        }
        .hero-visual {
            flex: 1 1 35%;
            min-width: 260px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-visual img {
            width: 100%;
            max-width: 400px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-glass);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 3.5rem 0;
        }
        .section-header {
            text-align: left;
            max-width: 700px;
            margin-bottom: 2.5rem;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 0.6rem;
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text-white);
            margin-bottom: 0.8rem;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== DATA CARDS / STATS ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }
        .stat-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-blue), var(--accent-cyan));
            opacity: 0;
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: var(--border-glass);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .stat-card:hover::before {
            opacity: 1;
        }
        .stat-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            font-size: 1.3rem;
            color: var(--accent-cyan);
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        /* ========== SERVICE MATRIX ========== */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        .matrix-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .matrix-item:hover {
            border-color: var(--border-glass);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .matrix-item .matrix-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.12));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-cyan);
        }
        .matrix-item h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
        }
        .matrix-item p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .matrix-item .btn-link {
            align-self: flex-start;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .matrix-item .btn-link i {
            transition: transform 0.3s;
        }
        .matrix-item .btn-link:hover i {
            transform: translateX(4px);
        }

        /* ========== RESULT COMPARISON ========== */
        .comparison-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-card);
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        .comparison-table th,
        .comparison-table td {
            padding: 1rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid var(--border-soft);
        }
        .comparison-table th {
            font-weight: 700;
            color: var(--accent-cyan);
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }
        .comparison-table td {
            color: var(--text-silver);
        }
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        .comparison-table .highlight-row td {
            background: rgba(0, 240, 255, 0.04);
            font-weight: 600;
            color: var(--text-white);
        }

        /* ========== FAQ ========== */
        .accordion-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm);
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .accordion-item:hover {
            border-color: var(--border-glass);
        }
        .accordion-button {
            width: 100%;
            padding: 1.2rem 1.5rem;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-size: 0.98rem;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
        }
        .accordion-button:not(.collapsed) {
            background: rgba(0, 82, 255, 0.08);
            color: var(--accent-cyan);
        }
        .accordion-button i {
            transition: transform 0.3s;
            font-size: 0.8rem;
        }
        .accordion-button:not(.collapsed) i {
            transform: rotate(180deg);
        }
        .accordion-body {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-silver);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ========== CTA / FORM ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.08));
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            display: flex;
            gap: 2.5rem;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            margin: 2rem 0;
        }
        .cta-content {
            flex: 1 1 55%;
        }
        .cta-content h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.7rem;
        }
        .cta-content p {
            color: var(--text-silver);
            line-height: 1.7;
        }
        .cta-form {
            flex: 1 1 40%;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            background: var(--bg-glass);
            padding: 1.8rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-soft);
        }
        .cta-form label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-silver);
        }
        .cta-form input,
        .cta-form select {
            padding: 0.8rem 1rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-soft);
            background: rgba(255,255,255,0.04);
            color: var(--text-white);
            font-size: 0.9rem;
            transition: var(--transition);
            outline: none;
        }
        .cta-form input:focus,
        .cta-form select:focus {
            border-color: var(--accent-cyan);
box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.15);
        }
        .cta-form .btn-primary {
            width: 100%;
            justify-content: center;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(8, 9, 15, 0.92);
            border-top: 1px solid var(--border-soft);
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1rem;
        }
        .footer-brand .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--text-white);
        }
        .footer-brand .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .footer-brand .logo-text strong {
            font-size: 0.9rem;
            font-weight: 800;
            color: var(--text-white);
        }
        .footer-brand .logo-text span {
            font-size: 0.65rem;
            font-weight: 500;
            color: var(--accent-cyan);
            letter-spacing: 0.03em;
        }
        .footer-brand p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-cyan);
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 1rem;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.6rem;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-silver);
            transition: var(--transition);
        }
        .footer-col ul li a:hover,
        .footer-col ul li a.active {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-soft);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: space-between;
            align-items: center;
        }
        .footer-bottom .copyright {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom .copyright a {
            color: var(--accent-cyan);
        }
        .footer-bottom .copyright a:hover {
            color: var(--text-white);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .footer-bottom .footer-links a {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--accent-cyan);
        }

        /* ========== FAB ========== */
        .fab-support {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1050;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8,9,15,0.85), rgba(8,9,15,0.85)), linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.2rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
            opacity: 0.6;
            animation: fab-breathe 3s ease-in-out infinite;
        }
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            animation: none;
        }
        .fab-support:active {
            transform: scale(0.95);
        }
        @keyframes fab-breathe {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 0.9; }
        }
        .fab-notification {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #FF007F;
            animation: blink-dot 1.2s ease-in-out infinite;
        }
        @keyframes blink-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero .container {
                gap: 2rem;
            }
            .hero-content {
                flex: 1 1 60%;
            }
            .hero-visual {
                flex: 1 1 35%;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .site-header {
                padding: 0.5rem 0;
            }
            .main-nav {
                gap: 0.3rem;
                padding: 0.5rem 0;
            }
            .nav-logo {
                margin-right: 0.4rem;
            }
            .nav-logo .logo-text strong {
                font-size: 0.75rem;
            }
            .nav-logo .logo-text span {
                font-size: 0.6rem;
            }
            .main-nav a {
                padding: 0.45rem 0.75rem;
                font-size: 0.75rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.45rem 0.9rem;
                font-size: 0.75rem;
            }
            .hero {
                padding: 2.5rem 0 2rem;
            }
            .hero .container {
                flex-direction: column;
                gap: 2rem;
            }
            .hero-content,
            .hero-visual {
                flex: 1 1 100%;
                min-width: 0;
            }
            .hero-visual img {
                max-width: 300px;
                margin: 0 auto;
            }
            .section {
                padding: 2.5rem 0;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                flex-direction: column;
                padding: 2rem 1.5rem;
            }
            .comparison-table {
                font-size: 0.8rem;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 0.8rem 0.6rem;
            }
            .fab-support {
                width: 46px;
                height: 46px;
                font-size: 1rem;
                left: 0.75rem;
                bottom: 5rem;
            }
        }
        @media (max-width: 520px) {
            .main-nav a {
                font-size: 0.7rem;
                padding: 0.4rem 0.6rem;
            }
            .nav-logo .logo-text strong {
                font-size: 0.7rem;
            }
            .btn-login,
            .btn-signup {
                font-size: 0.7rem;
                padding: 0.4rem 0.7rem;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-content h2 {
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ========== ACCESSIBILITY ========== */
        :focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }