/* roulang page: index */
:root {
            --bg-dark: #0F0C20;
            --bg-deep: #0B1A30;
            --bg-card: #15122B;
            --bg-card-hover: #1C1836;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #7A8090;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-neon: rgba(204, 255, 0, 0.5);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.25);
            --shadow-lift: 0 12px 30px rgba(0, 0, 0, 0.45);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --container: 1200px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'Inter', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

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

        button:focus-visible,
        .btn:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent-lime);
            outline-offset: 3px;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-md);
            padding-top: var(--space-sm);
            padding-bottom: var(--space-sm);
            flex-wrap: wrap;
        }

        .logo {
            font-weight: 800;
            font-size: 1.15rem;
            letter-spacing: 0.02em;
            color: var(--text-white);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: var(--space-xs);
            line-height: 1.3;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: var(--bg-dark);
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            flex-wrap: wrap;
        }

        .main-nav a {
            color: var(--text-silver);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 999px;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

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

        .main-nav a.active {
            color: var(--bg-dark);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            font-weight: 700;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
        }

        .btn-login {
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            padding: 9px 18px;
            border-radius: 999px;
            font-size: 0.95rem;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: var(--bg-dark);
            font-weight: 800;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 0.95rem;
            box-shadow: 0 4px 18px rgba(204, 255, 0, 0.35);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(204, 255, 0, 0.5);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 4px 12px;
            line-height: 1.2;
        }

        /* Hero Section - Icon Matrix */
        .hero {
            background: linear-gradient(160deg, var(--bg-dark) 0%, var(--bg-deep) 55%, #0B1A30 100%);
            position: relative;
            padding: var(--space-xl) 0 var(--space-lg);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 460px;
            height: 460px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -160px;
            left: -60px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.12) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            max-width: 820px;
        }

        .hero-status-bar {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            flex-wrap: wrap;
            margin-bottom: var(--space-md);
        }

        .status-pill {
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-glow);
            color: var(--accent-cyan);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            letter-spacing: 0.02em;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-lime);
            box-shadow: 0 0 8px var(--accent-lime);
            animation: pulse-dot 1.8s infinite;
        }

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

        .hero h1 {
            font-size: clamp(2.1rem, 5vw, 3.4rem);
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: var(--space-md);
            color: var(--text-white);
            max-width: 100%;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: var(--accent-lime);
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-silver);
            max-width: 680px;
            margin-bottom: var(--space-lg);
            line-height: 1.7;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            flex-wrap: wrap;
            margin-bottom: var(--space-lg);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-lime), #A8E000);
            color: var(--bg-dark);
            font-weight: 800;
            padding: 14px 32px;
            border-radius: 999px;
            font-size: 1rem;
            box-shadow: 0 8px 28px rgba(204, 255, 0, 0.4);
            letter-spacing: 0.01em;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(204, 255, 0, 0.55);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
        }

        .btn-ghost {
            background: transparent;
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.35);
            padding: 13px 28px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 1rem;
        }

        .btn-ghost:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .hero-icon-matrix {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: var(--space-sm);
            margin-top: var(--space-md);
            width: 100%;
            max-width: 720px;
        }

        .hero-icon-item {
            background: rgba(21, 18, 43, 0.75);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: var(--radius-md);
            padding: var(--space-sm);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            gap: 6px;
            transition: all var(--transition);
            min-height: 92px;
        }

        .hero-icon-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
            background: rgba(21, 18, 43, 0.95);
        }

        .hero-icon-item .icon {
            font-size: 1.7rem;
            line-height: 1;
        }

        .hero-icon-item .label {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-silver);
            letter-spacing: 0.02em;
        }

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

        .section-alt {
            background: rgba(11, 26, 48, 0.55);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .section-header {
            margin-bottom: var(--space-lg);
            max-width: 780px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(204, 255, 0, 0.12);
            color: var(--accent-lime);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: var(--space-sm);
            border: 1px solid rgba(204, 255, 0, 0.25);
        }

        .section-title {
            font-size: clamp(1.7rem, 3.5vw, 2.5rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: var(--space-sm);
            color: var(--text-white);
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 680px;
        }

        /* Entry Matrix Section */
        .entry-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--space-md);
        }

        .entry-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
            text-decoration: none;
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }

        .entry-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            transform: translateY(-6px);
            background: var(--bg-card-hover);
            color: var(--text-white);
        }

        .entry-card .entry-icon {
            font-size: 2rem;
            line-height: 1;
        }

        .entry-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .entry-card p {
            font-size: 0.92rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

        .entry-card .entry-link {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* Milestone / Timeline */
        .milestone-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--space-md);
        }

        .milestone-item {
            background: rgba(21, 18, 43, 0.7);
            border-left: 4px solid var(--accent-cyan);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: var(--space-md);
            transition: all var(--transition);
        }

        .milestone-item:hover {
            border-left-color: var(--accent-lime);
            background: rgba(21, 18, 43, 0.95);
            transform: translateX(4px);
        }

        .milestone-num {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.1;
            margin-bottom: var(--space-xs);
        }

        .milestone-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .milestone-item p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.55;
        }

        /* News / CMS Loop Section */
        .news-layout {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: var(--space-lg);
            align-items: start;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .news-item {
            background: rgba(21, 18, 43, 0.7);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-sm);
            padding: var(--space-md);
            transition: all var(--transition);
            display: block;
            text-decoration: none;
            color: var(--text-white);
        }

        .news-item:hover {
            border-color: var(--accent-cyan);
            background: rgba(21, 18, 43, 0.95);
            box-shadow: 0 4px 16px rgba(0, 240, 255, 0.15);
            transform: translateY(-2px);
            color: var(--text-white);
        }

        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            margin-bottom: 6px;
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .news-item .news-cat {
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.75rem;
        }

        .news-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            line-height: 1.45;
        }

        .news-item .news-excerpt {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

        .news-sidebar {
            background: rgba(21, 18, 43, 0.6);
            border: 1px solid rgba(204, 255, 0, 0.18);
            border-radius: var(--radius-md);
            padding: var(--space-md);
        }

        .news-sidebar h3 {
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: var(--space-sm);
            color: var(--accent-lime);
        }

        .news-sidebar ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--space-xs);
        }

        .news-sidebar ul li {
            font-size: 0.92rem;
            color: var(--text-silver);
            line-height: 1.5;
            padding-left: var(--space-sm);
            border-left: 2px solid rgba(0, 240, 255, 0.3);
        }

        .news-sidebar ul li strong {
            color: var(--text-white);
            font-weight: 700;
        }

        .news-empty {
            color: var(--text-silver);
            font-size: 0.95rem;
            padding: var(--space-md);
            background: rgba(21, 18, 43, 0.5);
            border-radius: var(--radius-sm);
            text-align: center;
        }

        /* Testimonial Bubbles */
        .bubble-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--space-md);
        }

        .bubble-card {
            background: rgba(21, 18, 43, 0.75);
            border: 1px solid rgba(0, 240, 255, 0.14);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            position: relative;
            transition: all var(--transition);
        }

        .bubble-card:hover {
            border-color: var(--accent-pink);
            box-shadow: 0 6px 22px rgba(255, 0, 127, 0.2);
            transform: translateY(-4px);
        }

        .bubble-card .bubble-quote {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.65;
            font-style: italic;
            margin-bottom: var(--space-sm);
        }

        .bubble-card .bubble-author {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
        }

        .bubble-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-pink));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: var(--bg-dark);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .bubble-author .bubble-name {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .bubble-author .bubble-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Campaign / Festival Zone */
        .campaign-zone {
            background: linear-gradient(135deg, rgba(255, 0, 127, 0.15), rgba(0, 240, 255, 0.12));
            border: 1px solid rgba(255, 0, 127, 0.3);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: var(--space-lg);
            position: relative;
            overflow: hidden;
        }

        .campaign-zone::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(255, 0, 127, 0.3) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .campaign-content {
            flex: 1 1 320px;
            position: relative;
            z-index: 2;
        }

        .campaign-content h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: var(--space-xs);
            color: var(--text-white);
        }

        .campaign-content p {
            color: var(--text-silver);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: var(--space-md);
        }

        .campaign-action {
            flex: 0 0 auto;
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            gap: var(--space-xs);
        }

        .btn-campaign {
            background: linear-gradient(135deg, var(--accent-pink), #FF3D9A);
            color: var(--text-white);
            font-weight: 800;
            padding: 14px 30px;
            border-radius: 999px;
            font-size: 1rem;
            box-shadow: 0 8px 26px rgba(255, 0, 127, 0.4);
        }

        .btn-campaign:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 34px rgba(255, 0, 127, 0.55);
            background: linear-gradient(135deg, #FF3D9A, var(--accent-pink));
        }

        /* Selling Points Trio */
        .trio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--space-md);
        }

        .trio-card {
            background: rgba(21, 18, 43, 0.8);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            padding: var(--space-lg) var(--space-md);
            text-align: left;
            transition: all var(--transition);
            position: relative;
        }

        .trio-card:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 10px 28px rgba(204, 255, 0, 0.2);
            transform: translateY(-6px);
        }

        .trio-card .trio-icon {
            font-size: 2.2rem;
            margin-bottom: var(--space-sm);
            display: block;
        }

        .trio-card h3 {
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: var(--space-xs);
        }

        .trio-card p {
            font-size: 0.92rem;
            color: var(--text-silver);
            line-height: 1.65;
        }

        /* Platform Trust Section */
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--space-md);
        }

        .trust-item {
            background: rgba(21, 18, 43, 0.7);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            transition: all var(--transition);
        }

        .trust-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            transform: translateY(-3px);
        }

        .trust-item .trust-icon {
            font-size: 1.8rem;
            flex-shrink: 0;
        }

        .trust-item .trust-text h3 {
            font-size: 1rem;
            font-weight: 700;
        }

        .trust-item .trust-text p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* App Download Section */
        .app-download {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: var(--space-lg);
            background: rgba(11, 26, 48, 0.8);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .app-info {
            flex: 1 1 320px;
        }

        .app-info h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: var(--space-xs);
        }

        .app-info p {
            color: var(--text-silver);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: var(--space-md);
        }

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

        .btn-app {
            background: rgba(21, 18, 43, 0.9);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--text-white);
            font-weight: 700;
            padding: 12px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-app:hover {
            border-color: var(--accent-lime);
            color: var(--accent-lime);
            background: rgba(21, 18, 43, 1);
        }

        .app-visual {
            flex: 0 0 280px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.25);
            box-shadow: var(--shadow-neon);
        }

        .app-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 950;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.85);
            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: 1.5rem;
            color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            opacity: 0.65;
            transition: all var(--transition);
            cursor: pointer;
            position: fixed;
            animation: fab-breathe 3s infinite;
            text-decoration: none;
        }

        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan), var(--accent-pink));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: 0.65; transform: scale(1); }
            50% { opacity: 0.95; transform: scale(1.06); }
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.12);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.7);
            color: var(--accent-lime);
        }

        .fab .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-pink);
            box-shadow: 0 0 8px var(--accent-pink);
            animation: pulse-dot 1.6s infinite;
        }

        /* Footer */
        .site-footer {
            background: #08060F;
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: var(--space-xl) 0 var(--space-md);
            margin-top: var(--space-xl);
        }

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

        .footer-brand .logo {
            font-size: 1.05rem;
            margin-bottom: var(--space-sm);
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 800;
            margin-bottom: var(--space-sm);
            color: var(--text-white);
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--space-xs);
        }

        .footer-col ul a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: var(--space-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--space-sm);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            gap: var(--space-xs);
            flex-wrap: wrap;
        }

        .footer-badge {
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            color: var(--accent-cyan);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .hero-icon-matrix {
                grid-template-columns: repeat(3, 1fr);
            }
        }

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

            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(15, 12, 32, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: var(--space-md);
                gap: var(--space-xs);
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
                box-shadow: 0 12px 28px rgba(0, 0, 0, 0.6);
            }

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

            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }

            .nav-toggle {
                display: inline-block;
            }

            .header-actions {
                margin-left: auto;
            }

            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.85rem;
            }

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

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

            .campaign-zone {
                flex-direction: column;
                align-items: stretch;
            }

            .app-download {
                flex-direction: column;
            }

            .app-visual {
                flex: 0 0 auto;
                width: 100%;
                max-height: 260px;
            }

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

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

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.8rem;
            }

            .hero-desc {
                font-size: 0.95rem;
            }

            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
            }

            .btn-primary,
            .btn-ghost {
                width: 100%;
                text-align: center;
                padding: 14px 20px;
            }

            .hero-icon-matrix {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-xs);
            }

            .hero-icon-item {
                min-height: 76px;
                padding: var(--space-xs);
            }

            .hero-icon-item .label {
                font-size: 0.7rem;
            }

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

            .trio-grid,
            .bubble-grid,
            .milestone-grid,
            .trust-grid,
            .entry-matrix-grid {
                grid-template-columns: 1fr;
            }

            .campaign-zone {
                padding: var(--space-md);
            }

            .fab {
                left: 12px;
                bottom: 80px;
                width: 50px;
                height: 50px;
                font-size: 1.3rem;
            }
        }

/* roulang page: article */
:root {
            --primary-bg: #0A2E1C;
            --forest-green: #123E25;
            --gold: #FFD700;
            --lucky-red: #D32F2F;
            --white: #FFFFFF;
            --pale-mint: #D1F2EB;
            --text-muted: #A8C5B8;
            --border-gold: rgba(255, 215, 0, 0.35);
            --shadow-gold: 0 8px 30px rgba(255, 215, 0, 0.12);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.45);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-2xl: 96px;
            --font-body: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
            --font-display: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1240px;
            --max-width-content: 780px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--primary-bg);
            color: var(--white);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

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

        a:hover {
            color: #FFE55C;
        }

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

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

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        .container-narrow {
            max-width: var(--max-width-content);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        /* ===== HEADER ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(10, 46, 28, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.18);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(10, 46, 28, 0.97);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-md);
            height: 72px;
            position: relative;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--white);
            font-weight: 700;
            font-size: 1rem;
            line-height: 1.2;
            text-decoration: none;
            transition: opacity var(--transition-fast);
            min-width: 0;
        }

        .logo:hover {
            opacity: 0.85;
            color: var(--white);
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            min-width: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--gold) 0%, #FFB300 50%, #FF8F00 100%);
            color: var(--primary-bg);
            font-size: 1.4rem;
            font-weight: 800;
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.35);
            letter-spacing: -0.02em;
        }

        .logo span:last-child {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            font-size: 0.92rem;
            max-width: 280px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            flex-wrap: wrap;
        }

        .main-nav a {
            color: var(--pale-mint);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .main-nav a.active {
            color: var(--gold);
            background: rgba(255, 215, 0, 0.12);
            font-weight: 600;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
        }

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

        .btn-login {
            color: var(--pale-mint);
            font-weight: 600;
            font-size: 0.88rem;
            padding: 9px 16px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--gold) 0%, #FFB300 100%);
            color: var(--primary-bg);
            font-weight: 700;
            font-size: 0.88rem;
            padding: 10px 20px;
            border-radius: 8px;
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.3);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.45);
            color: var(--primary-bg);
        }

        .btn-signup:active {
            transform: translateY(0) scale(0.97);
            box-shadow: 0 2px 8px rgba(255, 215, 0, 0.25);
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 215, 0, 0.25);
            color: var(--gold);
            font-size: 1.5rem;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            line-height: 1;
        }

        .nav-toggle:hover {
            background: rgba(255, 215, 0, 0.12);
        }

        /* ===== ARTICLE BODY ===== */
        .article-main {
            flex: 1;
            padding-top: 120px;
            padding-bottom: var(--space-2xl);
            background: linear-gradient(180deg, #0B3B24 0%, var(--primary-bg) 30%, var(--forest-green) 100%);
            min-height: 70vh;
        }

        .article-hero {
            background: linear-gradient(180deg, rgba(10, 46, 28, 0.4) 0%, rgba(10, 46, 28, 0.85) 100%), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-lg);
            margin-bottom: var(--space-xl);
            position: relative;
            border: 1px solid var(--border-gold);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.08) 0%, transparent 50%, rgba(211, 47, 47, 0.06) 100%);
            pointer-events: none;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: var(--space-md);
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .article-breadcrumb a {
            color: var(--pale-mint);
            transition: color var(--transition-fast);
        }

        .article-breadcrumb a:hover {
            color: var(--gold);
        }

        .article-breadcrumb .separator {
            color: rgba(255, 215, 0, 0.5);
            user-select: none;
        }

        .article-hero h1 {
            font-size: clamp(1.8rem, 5vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            color: var(--white);
            letter-spacing: -0.02em;
            position: relative;
            z-index: 1;
            text-wrap: balance;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            margin-top: var(--space-md);
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .article-meta-item .meta-icon {
            color: var(--gold);
            font-size: 1rem;
        }

        .article-category-badge {
            display: inline-block;
            background: rgba(255, 215, 0, 0.15);
            color: var(--gold);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--border-gold);
            letter-spacing: 0.02em;
        }

        .article-content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--space-xl);
            align-items: start;
        }

        .article-body {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: var(--space-xl);
            min-width: 0;
            overflow-wrap: break-word;
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-top: var(--space-xl);
            margin-bottom: var(--space-md);
            color: var(--gold);
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .article-body h2:first-child {
            margin-top: 0;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: var(--space-lg);
            margin-bottom: var(--space-sm);
            color: var(--white);
            line-height: 1.35;
        }

        .article-body p {
            margin-bottom: var(--space-md);
            color: var(--pale-mint);
            font-size: 1rem;
            line-height: 1.7;
        }

        .article-body ul,
        .article-body ol {
            margin: var(--space-md) 0;
            padding-left: 1.5rem;
            color: var(--pale-mint);
        }

        .article-body li {
            margin-bottom: var(--space-xs);
            line-height: 1.6;
        }

        .article-body li::marker {
            color: var(--gold);
        }

        .article-body strong {
            color: var(--white);
            font-weight: 600;
        }

        .article-body blockquote {
            border-left: 4px solid var(--gold);
            background: rgba(255, 215, 0, 0.06);
            padding: var(--space-md) var(--space-lg);
            margin: var(--space-lg) 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--pale-mint);
            font-style: italic;
        }

        .article-body img {
            margin: var(--space-lg) 0;
            border: 1px solid var(--border-gold);
            box-shadow: var(--shadow-gold);
        }

        .article-not-found {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: var(--radius-lg);
            padding: var(--space-2xl) var(--space-lg);
            text-align: center;
        }

        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--gold);
            margin-bottom: var(--space-md);
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: var(--space-lg);
        }

        .btn-back-home {
            display: inline-block;
            background: linear-gradient(135deg, var(--gold) 0%, #FFB300 100%);
            color: var(--primary-bg);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 14px 28px;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.3);
            transition: all var(--transition-fast);
        }

        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 215, 0, 0.45);
            color: var(--primary-bg);
        }

        /* ===== SIDEBAR ===== */
        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
        }

        .sidebar-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: var(--space-md);
        }

        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--gold);
            margin-bottom: var(--space-sm);
            letter-spacing: 0.01em;
        }

        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sidebar-card ul li {
            margin-bottom: 10px;
        }

        .sidebar-card ul li:last-child {
            margin-bottom: 0;
        }

        .sidebar-card ul li a {
            display: block;
            color: var(--pale-mint);
            font-size: 0.88rem;
            padding: 8px 10px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            line-height: 1.4;
        }

        .sidebar-card ul li a:hover {
            color: var(--gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .sidebar-cta {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.12) 0%, rgba(211, 47, 47, 0.08) 100%);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            text-align: center;
        }

        .sidebar-cta p {
            font-size: 0.9rem;
            color: var(--pale-mint);
            margin-bottom: var(--space-sm);
        }

        .btn-sidebar {
            display: inline-block;
            background: var(--gold);
            color: var(--primary-bg);
            font-weight: 700;
            font-size: 0.85rem;
            padding: 10px 18px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            width: 100%;
            text-align: center;
        }

        .btn-sidebar:hover {
            background: #FFE55C;
            color: var(--primary-bg);
            transform: translateY(-1px);
        }

        /* ===== FAB ===== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(145deg, #1A1A1A 0%, #0D0D0D 100%);
            border: 2px solid var(--gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.7;
            transition: all var(--transition-base);
            animation: fabFloat 3s ease-in-out infinite;
            position: fixed;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.15);
        }

        .fab:active {
            transform: scale(0.95) translateY(2px);
            box-shadow: 0 2px 10px rgba(255, 215, 0, 0.25);
        }

        .fab-icon {
            font-size: 1.6rem;
            line-height: 1;
            transition: transform var(--transition-base);
        }

        .fab:hover .fab-icon {
            transform: rotate(360deg);
        }

        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: var(--lucky-red);
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
            animation: blink 1.5s ease-in-out infinite;
        }

        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

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

        /* ===== FOOTER ===== */
        .site-footer {
            background: #062315;
            border-top: 1px solid rgba(255, 215, 0, 0.15);
            padding: var(--space-xl) 0 var(--space-md);
            margin-top: auto;
        }

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

        .footer-brand .logo {
            margin-bottom: var(--space-sm);
            font-size: 0.9rem;
        }

        .footer-brand .logo-icon {
            width: 36px;
            height: 36px;
            min-width: 36px;
            font-size: 1.1rem;
            border-radius: 10px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
        }

        .footer-col h4 {
            color: var(--gold);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-md);
            padding-top: var(--space-md);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            flex-wrap: wrap;
        }

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

        .footer-badges {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-block;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-gold);
            color: var(--gold);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
            letter-spacing: 0.03em;
        }

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

            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
                gap: var(--space-md);
            }

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

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

            .logo span:last-child {
                max-width: 160px;
                font-size: 0.78rem;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                min-width: 36px;
                font-size: 1.1rem;
                border-radius: 10px;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(10, 46, 28, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: var(--space-sm);
                border-bottom: 1px solid var(--border-gold);
                transform: translateY(-120%);
                transition: transform var(--transition-base);
                z-index: 99;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
            }

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

            .main-nav a {
                padding: 14px 16px;
                font-size: 0.95rem;
                border-radius: 8px;
                width: 100%;
            }

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

            .nav-toggle {
                display: flex;
            }

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

            .article-main {
                padding-top: 96px;
                padding-bottom: var(--space-xl);
            }

            .article-hero {
                padding: var(--space-lg) var(--space-md);
                border-radius: var(--radius-md);
            }

            .article-body {
                padding: var(--space-lg) var(--space-md);
                border-radius: var(--radius-md);
            }

            .article-body h2 {
                font-size: 1.35rem;
            }

            .article-body h3 {
                font-size: 1.1rem;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: var(--space-sm);
            }

            .fab {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 80px;
            }

            .fab-icon {
                font-size: 1.3rem;
            }
        }

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

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

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

            .article-meta {
                gap: var(--space-sm);
            }

            .article-meta-item {
                font-size: 0.75rem;
            }

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

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

            .article-body h2 {
                font-size: 1.25rem;
            }

            .footer-brand .logo span:last-child {
                max-width: 180px;
                font-size: 0.75rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #9BC4B5;
            --border-gold: rgba(255, 215, 0, 0.45);
            --card-bg: rgba(255, 255, 255, 0.04);
            --card-hover-bg: rgba(255, 255, 255, 0.08);
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.32);
            --shadow-gold: 0 6px 24px rgba(255, 215, 0, 0.18);
            --radius-sm: 10px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --radius-xl: 36px;
            --font-primary: 'Segoe UI', 'Inter', 'Roboto', system-ui, -apple-system, sans-serif;
            --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1240px;
            --section-padding: 72px 0;
        }

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

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

        body {
            font-family: var(--font-primary);
            background-color: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.65;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        a:hover {
            color: #FFE55C;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

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

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-gold);
            position: sticky;
            top: 0;
            z-index: 1000;
            width: 100%;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 76px;
            flex-wrap: wrap;
            padding-top: 10px;
            padding-bottom: 10px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-white);
            letter-spacing: 0.02em;
            line-height: 1.3;
            text-decoration: none;
            transition: var(--transition);
        }

        .logo:hover {
            color: var(--accent-gold);
            text-decoration: none;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-gold), #B8860B);
            color: #0A2E1C;
            font-size: 1.6rem;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: var(--shadow-gold);
        }

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

        .main-nav a {
            display: inline-block;
            padding: 10px 16px;
            border-radius: 30px;
            color: var(--text-mint);
            font-weight: 500;
            font-size: 0.92rem;
            letter-spacing: 0.01em;
            position: relative;
            transition: var(--transition);
            text-decoration: none;
        }

        .main-nav a:hover {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
            text-decoration: none;
        }

        .main-nav a.active {
            color: #0A2E1C;
            background: var(--accent-gold);
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.35);
        }

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

        .btn-login,
        .btn-signup {
            padding: 10px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.88rem;
            letter-spacing: 0.02em;
            transition: var(--transition);
        }

        .btn-login {
            background: transparent;
            color: var(--text-mint);
            border: 1px solid rgba(209, 242, 235, 0.35);
        }

        .btn-login:hover {
            background: rgba(209, 242, 235, 0.1);
            color: var(--text-white);
            border-color: var(--text-mint);
        }

        .btn-signup {
            background: var(--accent-gold);
            color: #0A2E1C;
            box-shadow: var(--shadow-gold);
        }

        .btn-signup:hover {
            background: #FFE55C;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 215, 0, 0.4);
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
            width: 46px;
            height: 46px;
            border-radius: 12px;
            font-size: 1.5rem;
            line-height: 1;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-gold);
        }

        /* ===== Hero (Group-buy conversion) ===== */
        .hero {
            background: linear-gradient(135deg, #0A2E1C 0%, #0D3A24 45%, #123E25 100%);
            padding: 60px 0 54px;
            position: relative;
            overflow: hidden;
            border-bottom: 2px solid var(--border-gold);
        }

        .hero::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -20%;
            width: 650px;
            height: 650px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.12), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: "";
            position: absolute;
            bottom: -30%;
            left: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(209, 242, 235, 0.08), transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }

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

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

        .hero-badge {
            display: inline-block;
            background: rgba(255, 215, 0, 0.12);
            color: var(--accent-gold);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            border: 1px solid var(--border-gold);
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
            color: var(--text-white);
        }

        .hero h1 .highlight {
            color: var(--accent-gold);
            position: relative;
        }

        .hero-subtitle {
            font-size: 1.12rem;
            color: var(--text-mint);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 560px;
        }

        .hero-group-info {
            display: flex;
            align-items: center;
            gap: 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 215, 0, 0.3);
            border-radius: var(--radius-md);
            padding: 16px 22px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .hero-group-info .group-count {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent-gold);
        }

        .hero-group-info .group-label {
            color: var(--text-mint);
            font-size: 0.92rem;
        }

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

        .btn-primary,
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: var(--transition);
            text-decoration: none;
            min-width: 180px;
        }

        .btn-primary {
            background: var(--accent-gold);
            color: #0A2E1C;
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.4);
        }

        .btn-primary:hover {
            background: #FFE55C;
            transform: translateY(-3px);
            box-shadow: 0 14px 34px rgba(255, 215, 0, 0.5);
            text-decoration: none;
            color: #0A2E1C;
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-white);
            border: 2px solid var(--accent-gold);
        }

        .btn-secondary:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: #FFE55C;
            transform: translateY(-3px);
            text-decoration: none;
            color: var(--text-white);
        }

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

        .hero-visual img {
            width: 100%;
            max-width: 460px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 2px solid var(--border-gold);
        }

        /* ===== Main sections ===== */
        main {
            flex: 1;
            background: var(--primary-bg);
        }

        .section {
            padding: var(--section-padding);
            position: relative;
        }

        .section-alt {
            background: var(--secondary-bg);
        }

        .section-header {
            margin-bottom: 42px;
            max-width: 720px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text-white);
        }

        .section-header p {
            color: var(--text-mint);
            font-size: 1.05rem;
            line-height: 1.7;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-gold);
            margin-bottom: 10px;
        }

        /* ===== Content grid ===== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 28px;
            margin-top: 32px;
        }

        .content-card {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .content-card:hover {
            background: var(--card-hover-bg);
            border-color: var(--border-gold);
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }

        .content-card .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(255, 215, 0, 0.12);
            color: var(--accent-gold);
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .content-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-white);
        }

        .content-card p {
            color: var(--text-mint);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .content-card .card-tag {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 20px;
            background: rgba(211, 47, 47, 0.2);
            color: #FF8A80;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-top: 14px;
            border: 1px solid rgba(211, 47, 47, 0.35);
        }

        /* ===== Comparison table ===== */
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .comparison-table th,
        .comparison-table td {
            padding: 18px 20px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-mint);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .comparison-table th {
            background: rgba(255, 215, 0, 0.1);
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.92rem;
            letter-spacing: 0.02em;
        }

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

        .comparison-table td:first-child {
            color: var(--text-white);
            font-weight: 600;
        }

        /* ===== Steps / Flow ===== */
        .steps-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .steps-list li {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: var(--transition);
        }

        .steps-list li:hover {
            background: var(--card-hover-bg);
            border-color: var(--border-gold);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent-gold);
            color: #0A2E1C;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .step-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-white);
        }

        .step-content p {
            color: var(--text-mint);
            font-size: 0.92rem;
            line-height: 1.65;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 860px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 700;
            font-size: 1.02rem;
            color: var(--text-white);
            background: transparent;
            width: 100%;
            text-align: left;
            gap: 16px;
            transition: var(--transition);
        }

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

        .faq-question .faq-icon {
            font-size: 1.4rem;
            color: var(--accent-gold);
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-mint);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 22px;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0D3A24, #123E25);
            border-top: 2px solid var(--border-gold);
            border-bottom: 2px solid var(--border-gold);
            padding: 64px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2.1rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-white);
        }

        .cta-section p {
            color: var(--text-mint);
            font-size: 1.08rem;
            margin-bottom: 30px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #082318;
            border-top: 2px solid var(--border-gold);
            padding: 52px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
            font-size: 1rem;
        }

        .footer-brand p {
            color: var(--text-mint);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-col h4 {
            color: var(--accent-gold);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

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

        .footer-col ul a {
            color: var(--text-mint);
            font-size: 0.9rem;
            transition: var(--transition);
            text-decoration: none;
        }

        .footer-col ul a:hover {
            color: var(--accent-gold);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .footer-badges {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(255, 215, 0, 0.1);
            color: var(--accent-gold);
            font-size: 0.78rem;
            font-weight: 700;
            border: 1px solid var(--border-gold);
            letter-spacing: 0.03em;
        }

        /* ===== FAB ===== */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 950;
            width: 58px;
            height: 58px;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, #1C1C1E, #0A0A0A);
            border: 3px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-gold);
            transition: var(--transition);
            animation: fabFloat 3s ease-in-out infinite;
            opacity: 0.7;
        }

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
        }

        .fab-support:active {
            transform: scale(0.95) translateY(2px);
        }

        .fab-support .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: #D32F2F;
            border: 2px solid #0A2E1C;
            animation: blink 1.4s infinite;
        }

        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-visual img {
                max-width: 380px;
                margin: 0 auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding: 52px 0;
            }
            .header-inner {
                flex-wrap: nowrap;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 46, 28, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 2px solid var(--border-gold);
                box-shadow: var(--shadow-md);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 14px 16px;
                border-radius: 12px;
            }
            .nav-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 12px 14px;
                font-size: 0.85rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                min-width: auto;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo span:last-child {
                font-size: 0.85rem;
                max-width: 180px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1.3rem;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 8px 14px;
                font-size: 0.78rem;
            }
            .hero {
                padding: 40px 0 36px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-group-info {
                padding: 12px 16px;
                gap: 10px;
            }
            .hero-group-info .group-count {
                font-size: 1.1rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .fab-support {
                width: 50px;
                height: 50px;
                font-size: 1.3rem;
                left: 12px;
                bottom: 80px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --border-glow: rgba(0, 240, 255, 0.35);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --radius-sm: 12px;
            --radius-md: 20px;
            --radius-lg: 32px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --transition: all 0.25s ease;
        }

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

        body {
            font-family: 'Segoe UI', system-ui, -apple-system, Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        .container {
            width: min(1200px, 92%);
            margin: 0 auto;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.18);
            padding: 12px 0;
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-white);
            white-space: nowrap;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: #0B1A30;
            font-weight: 900;
            font-size: 1.4rem;
            border-radius: 10px;
            box-shadow: 0 0 12px rgba(204, 255, 0, 0.4);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
        }

        .main-nav a {
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-silver);
            white-space: nowrap;
            transition: var(--transition);
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--bg-primary);
            background: var(--accent-lime);
            box-shadow: 0 0 14px rgba(204, 255, 0, 0.5);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .btn-login {
            padding: 8px 16px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.4);
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-cyan);
        }

        .btn-signup {
            padding: 8px 18px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.85rem;
            color: #0B1A30;
            background: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
        }

        .btn-signup:hover {
            background: var(--accent-lime);
            box-shadow: 0 0 18px rgba(204, 255, 0, 0.6);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            background: transparent;
        }

        /* Hero */
        .page-hero {
            padding: 130px 0 70px;
            background: radial-gradient(circle at 20% 20%, rgba(0, 240, 255, 0.08), transparent 45%),
                        radial-gradient(circle at 80% 60%, rgba(204, 255, 0, 0.06), transparent 40%),
                        linear-gradient(145deg, #0B1A30, #0F0C20);
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: var(--space-xl);
            align-items: center;
        }

        .hero-copy h1 {
            font-size: 2.6rem;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: var(--space-sm);
            background: linear-gradient(to right, #FFFFFF, #CCFF00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-copy p {
            font-size: 1.1rem;
            color: var(--text-silver);
            max-width: 560px;
            margin-bottom: var(--space-md);
        }

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

        .badge {
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 700;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .btn-primary {
            display: inline-block;
            padding: 14px 28px;
            border-radius: 999px;
            font-weight: 800;
            font-size: 1rem;
            color: #0B1A30;
            background: var(--accent-lime);
            box-shadow: 0 0 18px rgba(204, 255, 0, 0.5);
            transition: var(--transition);
        }

        .btn-primary:hover {
            background: #FFFFFF;
            box-shadow: 0 0 24px rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }

        .hero-panel {
            background: rgba(15, 12, 32, 0.75);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            backdrop-filter: blur(12px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        .hero-panel h3 {
            font-size: 1.3rem;
            margin-bottom: var(--space-sm);
            color: var(--accent-cyan);
        }

        .hero-panel ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .hero-panel li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-silver);
        }

        .hero-panel li::before {
            content: '✓';
            font-weight: 900;
            color: var(--accent-lime);
            font-size: 1.1rem;
        }

        /* Main Sections */
        main {
            padding-bottom: var(--space-xl);
        }

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

        .section-head {
            max-width: 700px;
            margin-bottom: var(--space-lg);
        }

        .section-head h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: var(--space-xs);
            color: var(--text-white);
        }

        .section-head p {
            color: var(--text-silver);
            font-size: 1.05rem;
        }

        .flow-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--space-md);
        }

        .flow-card {
            background: rgba(15, 12, 32, 0.6);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: var(--radius-md);
            padding: var(--space-lg);
            transition: var(--transition);
            position: relative;
        }

        .flow-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }

        .flow-card .step {
            font-size: 0.8rem;
            font-weight: 800;
            color: var(--accent-lime);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: var(--space-xs);
        }

        .flow-card h3 {
            font-size: 1.2rem;
            margin-bottom: var(--space-xs);
        }

        .flow-card p {
            color: var(--text-silver);
            font-size: 0.95rem;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: rgba(15, 12, 32, 0.5);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
            font-size: 0.95rem;
        }

        .comparison-table th {
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            font-weight: 700;
        }

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

        .comparison-table td:first-child {
            font-weight: 700;
            color: var(--text-white);
        }

        .audience-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--space-md);
        }

        .audience-item {
            display: flex;
            align-items: flex-start;
            gap: var(--space-sm);
            background: rgba(15, 12, 32, 0.4);
            padding: var(--space-md);
            border-radius: var(--radius-sm);
            border-left: 4px solid var(--accent-cyan);
        }

        .audience-item .icon {
            font-size: 1.5rem;
            color: var(--accent-lime);
        }

        .audience-item h4 {
            font-size: 1rem;
            margin-bottom: 4px;
        }

        .audience-item p {
            font-size: 0.9rem;
            color: var(--text-silver);
        }

        .mistake-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .mistake-item {
            background: rgba(15, 12, 32, 0.5);
            border: 1px solid rgba(255, 0, 127, 0.2);
            border-radius: var(--radius-sm);
            padding: var(--space-md);
            transition: var(--transition);
        }

        .mistake-item:hover {
            border-color: #FF007F;
            box-shadow: 0 0 12px rgba(255, 0, 127, 0.3);
        }

        .mistake-item h4 {
            color: #FF79C6;
            margin-bottom: 4px;
        }

        .mistake-item p {
            color: var(--text-silver);
            font-size: 0.95rem;
        }

        .cta-section {
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.08), rgba(0, 240, 255, 0.08));
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-lg);
            padding: var(--space-xl);
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: var(--space-sm);
        }

        .cta-section p {
            color: var(--text-silver);
            max-width: 600px;
            margin: 0 auto var(--space-md);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .faq-item {
            background: rgba(15, 12, 32, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-sm);
            padding: var(--space-md);
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.4);
        }

        .faq-item h4 {
            color: var(--accent-lime);
            font-size: 1.05rem;
            margin-bottom: 6px;
        }

        .faq-item p {
            color: var(--text-silver);
            font-size: 0.95rem;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 900;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(8px);
            border: 2px solid var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            opacity: 0.6;
            transition: var(--transition);
            animation: breathe 2.5s ease-in-out infinite;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            border-color: var(--accent-lime);
            color: var(--accent-lime);
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.7);
        }

        .fab::after {
            content: '';
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #0F0C20;
            animation: blink 1.2s ease-in-out infinite;
        }

        @keyframes breathe {
            0%, 100% { transform: translateY(0); opacity: 0.6; }
            50% { transform: translateY(-6px); opacity: 0.9; }
        }

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

        /* Footer */
        .site-footer {
            background: #0F0C20;
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: var(--space-xl) 0 var(--space-md);
            margin-top: var(--space-xl);
        }

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

        .footer-brand p {
            color: var(--text-silver);
            font-size: 0.9rem;
            margin-top: var(--space-sm);
            max-width: 300px;
        }

        .footer-col h4 {
            color: var(--accent-cyan);
            font-size: 1rem;
            margin-bottom: var(--space-sm);
        }

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

        .footer-col a {
            color: var(--text-silver);
            font-size: 0.9rem;
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--space-sm);
            padding-top: var(--space-md);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            font-size: 0.85rem;
            color: var(--text-silver);
        }

        .footer-badges {
            display: flex;
            gap: 8px;
        }

        .footer-badge {
            padding: 4px 10px;
            border-radius: 999px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-cyan);
        }

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

        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(15, 12, 32, 0.98);
                flex-direction: column;
                align-items: flex-start;
                padding: var(--space-md);
                gap: var(--space-sm);
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                z-index: 999;
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .main-nav a {
                width: 100%;
                padding: 12px 16px;
            }
            .nav-toggle {
                display: block;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .hero-copy h1 {
                font-size: 1.9rem;
            }
            .section-head h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 10px 12px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 8px;
            }
            .logo span:last-child {
                font-size: 0.85rem;
                white-space: normal;
                line-height: 1.2;
            }
            .hero-copy h1 {
                font-size: 1.6rem;
            }
            .btn-primary {
                width: 100%;
                text-align: center;
            }
            .fab {
                left: 8px;
                bottom: 80px;
                width: 44px;
                height: 44px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-dark: #0B0B0B;
            --bg-charcoal: #161616;
            --bg-elevated: #1E1E1E;
            --bg-card: #202020;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-glow: #FF6B35;
            --text-white: #FFFFFF;
            --text-warm-gray: #CCCCCC;
            --text-muted: #9A9A9A;
            --border-dark: #2E2E2E;
            --border-accent: rgba(255, 69, 0, 0.4);
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.6);
            --shadow-hover: 0 12px 36px rgba(255, 69, 0, 0.25);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-medium: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-primary);
            background-color: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            position: relative;
        }

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

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

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

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        /* Header & Navigation */
        .site-header {
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: all var(--transition-medium);
        }

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

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            min-height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-white);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 500px;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            color: var(--text-white);
            font-weight: 800;
            font-size: 1.2rem;
            border-radius: 8px;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(255, 69, 0, 0.35);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: 10px 14px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-warm-gray);
            border-radius: var(--radius-sm);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(255, 69, 0, 0.1);
        }

        .main-nav a.active {
            color: var(--accent-lava);
            font-weight: 600;
            background: rgba(255, 69, 0, 0.12);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-lava);
            border-radius: 1px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }

        .btn-login {
            padding: 10px 18px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-warm-gray);
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid var(--border-dark);
            white-space: nowrap;
        }

        .btn-login:hover {
            color: var(--text-white);
            border-color: var(--accent-lava);
            background: rgba(255, 69, 0, 0.08);
        }

        .btn-signup {
            padding: 10px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-white);
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 14px rgba(255, 69, 0, 0.35);
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 69, 0, 0.5);
            color: var(--text-white);
        }

        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-white);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: var(--bg-elevated);
            border: 1px solid var(--border-dark);
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-charcoal) 100%);
            overflow: hidden;
            padding: var(--spacing-xl) 0;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 60%;
            height: 120%;
            background: radial-gradient(circle, rgba(255, 69, 0, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .flash-deal-bar {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            background: rgba(255, 69, 0, 0.12);
            border: 1px solid var(--border-accent);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm) var(--spacing-md);
            margin-bottom: var(--spacing-lg);
        }

        .flash-deal-bar .flash-label {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent-lava);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .flash-deal-bar .flash-timer {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-white);
            background: var(--bg-card);
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-dark);
            font-variant-numeric: tabular-nums;
        }

        .flash-deal-bar .flash-desc {
            font-size: 0.9rem;
            color: var(--text-warm-gray);
            flex: 1;
            min-width: 200px;
        }

        .hero-main {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            margin-top: var(--spacing-md);
        }

        .hero-text h1 {
            font-size: clamp(2rem, 4vw, 3.2rem);
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-white);
            margin-bottom: var(--spacing-md);
        }

        .hero-text h1 .highlight {
            color: var(--accent-lava);
            position: relative;
            display: inline-block;
        }

        .hero-text h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--accent-lava);
            border-radius: 2px;
            opacity: 0.5;
        }

        .hero-text .lead {
            font-size: 1.15rem;
            color: var(--text-warm-gray);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
            max-width: 540px;
        }

        .hero-cta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-primary-lg {
            padding: 16px 32px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            border-radius: var(--radius-md);
            box-shadow: 0 8px 24px rgba(255, 69, 0, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: none;
        }

        .btn-primary-lg:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(255, 69, 0, 0.55);
            color: var(--text-white);
        }

        .btn-secondary-lg {
            padding: 16px 28px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-warm-gray);
            background: transparent;
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-secondary-lg:hover {
            color: var(--text-white);
            border-color: var(--accent-lava);
            background: rgba(255, 69, 0, 0.08);
        }

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

        .hero-visual-card {
            background: var(--bg-elevated);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            width: 100%;
            max-width: 420px;
            position: relative;
            box-shadow: var(--shadow-card);
        }

        .hero-visual-card::before {
            content: '';
            position: absolute;
            top: -2px;
            left: 20%;
            right: 20%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-lava), transparent);
            border-radius: 2px;
        }

        .hero-visual-card .promo-badge {
            display: inline-block;
            background: var(--accent-lava);
            color: var(--text-white);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: var(--spacing-sm);
        }

        .hero-visual-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--spacing-xs);
        }

        .hero-visual-card .price-row {
            display: flex;
            align-items: baseline;
            gap: var(--spacing-xs);
            margin: var(--spacing-sm) 0;
        }

        .hero-visual-card .price-old {
            font-size: 1rem;
            color: var(--text-muted);
            text-decoration: line-through;
        }

        .hero-visual-card .price-new {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-lava);
        }

        .hero-visual-card .price-unit {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .hero-visual-card .features-list {
            list-style: none;
            padding: 0;
            margin: var(--spacing-sm) 0;
        }

        .hero-visual-card .features-list li {
            padding: 8px 0;
            color: var(--text-warm-gray);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 10px;
            border-bottom: 1px solid var(--border-dark);
        }

        .hero-visual-card .features-list li:last-child {
            border-bottom: none;
        }

        .hero-visual-card .features-list li i {
            color: var(--accent-lava);
            font-size: 0.85rem;
            width: 18px;
            text-align: center;
        }

        .hero-visual-card .btn-grab {
            width: 100%;
            padding: 14px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            border-radius: var(--radius-sm);
            border: none;
            margin-top: var(--spacing-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .hero-visual-card .btn-grab:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 69, 0, 0.4);
        }

        .hero-visual-card .stock-info {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: var(--spacing-sm);
        }

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

        .section-alt {
            background: var(--bg-charcoal);
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
        }

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

        .section-header h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: var(--spacing-xs);
            line-height: 1.3;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.7;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--accent-lava);
            margin-bottom: var(--spacing-xs);
        }

        /* Comparison Table */
        .comparison-wrapper {
            background: var(--bg-elevated);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-dark);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-dark);
        }

        .comparison-table th {
            background: var(--bg-card);
            color: var(--text-white);
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .comparison-table td {
            color: var(--text-warm-gray);
        }

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

        .comparison-table .highlight-col {
            background: rgba(255, 69, 0, 0.08);
            border-left: 2px solid var(--accent-lava);
        }

        .comparison-table .check-icon {
            color: #32CD32;
        }

        .comparison-table .x-icon {
            color: var(--accent-fire);
        }

        /* Cards */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }

        .info-card {
            background: var(--bg-elevated);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all var(--transition-medium);
            position: relative;
            overflow: hidden;
        }

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

        .info-card .card-icon {
            width: 48px;
            height: 48px;
            background: rgba(255, 69, 0, 0.15);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-sm);
            font-size: 1.3rem;
            color: var(--accent-lava);
        }

        .info-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--spacing-xs);
        }

        .info-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Vertical Card Flow */
        .vertical-card-flow {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .vertical-card {
            display: flex;
            gap: var(--spacing-md);
            background: var(--bg-elevated);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all var(--transition-medium);
            align-items: flex-start;
        }

        .vertical-card:hover {
            border-color: var(--border-accent);
            box-shadow: var(--shadow-hover);
            transform: translateX(6px);
        }

        .vertical-card .card-number {
            font-size: 2rem;
            font-weight: 800;
            color: rgba(255, 69, 0, 0.3);
            min-width: 56px;
            text-align: center;
            line-height: 1;
        }

        .vertical-card .card-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--spacing-xs);
        }

        .vertical-card .card-content p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .vertical-card .card-content .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            background: rgba(255, 69, 0, 0.15);
            color: var(--accent-lava);
            margin-bottom: var(--spacing-xs);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background: var(--bg-elevated);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-question {
            width: 100%;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            text-align: left;
            background: transparent;
            border: none;
        }

        .faq-question .faq-icon {
            font-size: 0.9rem;
            color: var(--accent-lava);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
        }

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

        .faq-answer-inner {
            padding: 0 20px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-charcoal) 0%, #1A0F0A 100%);
            border: 1px solid var(--border-accent);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at center, rgba(255, 69, 0, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: var(--spacing-sm);
            position: relative;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-warm-gray);
            max-width: 560px;
            margin: 0 auto var(--spacing-md);
            position: relative;
        }

        .cta-buttons {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-charcoal);
            border-top: 1px solid var(--border-dark);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

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

        .footer-brand .logo {
            margin-bottom: var(--spacing-sm);
            font-size: 1rem;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--spacing-sm);
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
        }

        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border-dark);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }

        .footer-badge {
            padding: 6px 14px;
            border: 1px solid var(--border-dark);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-warm-gray);
        }

        .footer-badge:first-child {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: rgba(11, 11, 11, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid var(--accent-lava);
            border-radius: 50%;
            box-shadow: 0 0 24px rgba(255, 69, 0, 0.4), 0 8px 16px rgba(0, 0, 0, 0.5);
            cursor: pointer;
            opacity: 0.7;
            transition: all var(--transition-medium);
            animation: fab-float 3s ease-in-out infinite;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 36px rgba(255, 69, 0, 0.6), 0 12px 24px rgba(0, 0, 0, 0.6);
        }

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

        .fab-left .fab-icon {
            font-size: 1.5rem;
            color: var(--accent-lava);
            transition: transform var(--transition-medium);
        }

        .fab-left:hover .fab-icon {
            transform: rotate(360deg);
        }

        .fab-left .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            background: var(--accent-fire);
            border-radius: 50%;
            border: 2px solid var(--bg-dark);
            animation: fab-blink 1.5s ease-in-out infinite;
        }

        @keyframes fab-float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-main {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .hero-visual {
                order: -1;
            }
            .hero-visual-card {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                min-height: auto;
                padding: var(--spacing-sm) 0;
            }
            .logo {
                font-size: 0.95rem;
                max-width: 60%;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: var(--spacing-sm) 0;
                background: var(--bg-dark);
                border-top: 1px solid var(--border-dark);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 1rem;
            }
            .main-nav a.active::after {
                display: none;
            }
            .header-actions {
                gap: var(--spacing-xs);
            }
            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .nav-toggle {
                display: block;
            }
            .hero-section {
                padding: var(--spacing-lg) 0;
            }
            .flash-deal-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .hero-text .lead {
                font-size: 1rem;
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
            .comparison-table {
                font-size: 0.85rem;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 12px 14px;
            }
            .vertical-card {
                flex-direction: column;
                gap: var(--spacing-xs);
            }
            .vertical-card .card-number {
                font-size: 1.5rem;
                min-width: auto;
                text-align: left;
            }
            .cta-section {
                padding: var(--spacing-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .fab-left {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
            .fab-left .fab-icon {
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 0.8rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 1rem;
            }
            .btn-login,
            .btn-signup {
                padding: 6px 10px;
                font-size: 0.75rem;
            }
            .btn-primary-lg,
            .btn-secondary-lg {
                padding: 12px 20px;
                font-size: 0.9rem;
            }
            .hero-visual-card {
                padding: var(--spacing-md);
            }
            .hero-visual-card .price-new {
                font-size: 1.4rem;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 8px 10px;
                font-size: 0.75rem;
            }
        }