/* roulang page: index */
:root {
            --bg-primary: #08090f;
            --bg-secondary: #0d111e;
            --bg-tertiary: #111827;
            --accent-blue: #0052ff;
            --accent-cyan: #00f0ff;
            --accent-gold: #ffd700;
            --accent-gold-soft: #f0c541;
            --text-white: #ffffff;
            --text-silver: #cbd5e1;
            --text-muted: #6b7280;
            --text-slate: #94a3b8;
            --border-subtle: rgba(0, 240, 255, 0.15);
            --border-strong: rgba(0, 240, 255, 0.35);
            --border-gold: rgba(255, 215, 0, 0.25);
            --glass-bg: rgba(13, 17, 30, 0.72);
            --glass-border: rgba(255, 255, 255, 0.08);
            --glass-blur: blur(20px);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.35);
            --shadow-glow-cyan: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-glow-blue: 0 0 20px rgba(0, 82, 255, 0.4);
            --shadow-glow-gold: 0 0 18px rgba(255, 215, 0, 0.35);
            --transition-fast: 0.2s ease;
            --transition-med: 0.35s ease;
            --font-sans: 'Segoe UI', 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-serif: 'Georgia', 'Times New Roman', serif;
        }

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

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

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

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

        a:hover,
        a:focus {
            color: var(--text-white);
            outline: none;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.5rem;
            color: var(--text-white);
        }

        h1 {
            font-size: clamp(2rem, 4.5vw, 3.5rem);
            letter-spacing: -0.5px;
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
        }

        h2 {
            font-size: clamp(1.5rem, 3vw, 2.3rem);
            letter-spacing: -0.3px;
            margin-bottom: 1rem;
        }

        h3 {
            font-size: clamp(1.15rem, 2.2vw, 1.6rem);
            letter-spacing: -0.2px;
        }

        h4 {
            font-size: 1.1rem;
            letter-spacing: -0.1px;
        }

        p {
            margin-bottom: 1rem;
            color: var(--text-silver);
        }

        .section-pad {
            padding: 5rem 0;
        }

        .section-pad-sm {
            padding: 3.5rem 0;
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

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

        .text-gradient-gold {
            background: linear-gradient(135deg, var(--accent-gold), #ffb700);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-soft);
            transition: transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med);
        }

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

        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.85rem 2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.3px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
            text-transform: none;
            line-height: 1.2;
        }

        .btn-glow::after {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50px;
            padding: 2px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), #7c3aed);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            opacity: 0;
            transition: opacity var(--transition-med);
            pointer-events: none;
        }

        .btn-glow:hover::after {
            opacity: 1;
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, #0052ff, #00c2ff);
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.5), 0 0 40px rgba(0, 240, 255, 0.2);
        }

        .btn-primary-glow:hover {
            background: linear-gradient(135deg, #0062ff, #00e0ff);
            box-shadow: 0 0 30px rgba(0, 82, 255, 0.7), 0 0 55px rgba(0, 240, 255, 0.35);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-gold-glow {
            background: linear-gradient(135deg, #f0a500, #ffd700);
            color: #1a1a1a;
            box-shadow: 0 0 20px rgba(255, 215, 0, 0.4), 0 0 35px rgba(240, 165, 0, 0.2);
        }

        .btn-gold-glow:hover {
            background: linear-gradient(135deg, #ffb700, #ffe033);
            box-shadow: 0 0 30px rgba(255, 215, 0, 0.6), 0 0 50px rgba(240, 165, 0, 0.3);
            color: #1a1a1a;
            transform: translateY(-2px);
        }

        .btn-outline-glow {
            background: transparent;
            color: var(--text-white);
            border: 2px solid var(--border-strong);
            box-shadow: inset 0 0 10px rgba(0, 240, 255, 0.08);
        }

        .btn-outline-glow:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            color: var(--accent-cyan);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 0.6rem 1.4rem;
            font-size: 0.9rem;
        }

        .btn-lg {
            padding: 1.1rem 2.5rem;
            font-size: 1.1rem;
        }

        .badge-cyber {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            border: 1px solid var(--border-strong);
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
            text-transform: uppercase;
        }

        .badge-gold {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            border: 1px solid var(--border-gold);
            background: rgba(255, 215, 0, 0.06);
            color: var(--accent-gold);
            text-transform: uppercase;
        }

        .nav-header {
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid var(--glass-border);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0.8rem 0;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--text-white);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

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

        .nav-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li {
            margin: 0;
        }

        .nav-links a {
            display: block;
            padding: 0.55rem 1.1rem;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-silver);
            transition: all var(--transition-fast);
            letter-spacing: 0.2px;
            white-space: nowrap;
        }

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

        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.12);
            box-shadow: inset 0 0 12px rgba(0, 240, 255, 0.15);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .nav-btn-login {
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-silver);
            background: transparent;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-btn-signup {
            padding: 0.55rem 1.5rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 700;
            background: linear-gradient(135deg, #0052ff, #00c2ff);
            color: #fff;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 82, 255, 0.5);
            transition: all var(--transition-med);
            white-space: nowrap;
        }

        .nav-btn-signup:hover {
            box-shadow: 0 0 25px rgba(0, 82, 255, 0.7), 0 0 40px rgba(0, 240, 255, 0.3);
            transform: translateY(-1px);
            color: #fff;
        }

        .hamburger-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            color: var(--text-white);
            font-size: 1.3rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

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

        .mobile-menu {
            display: none;
            width: 100%;
            padding: 1rem 0 0.5rem;
        }

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

        .mobile-menu .nav-links {
            flex-direction: column;
            align-items: stretch;
            gap: 0.3rem;
        }

        .mobile-menu .nav-links a {
            padding: 0.8rem 1.2rem;
            border-radius: var(--radius-sm);
        }

        .hero-home {
            position: relative;
            padding: 4rem 0 6rem;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 560px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-home::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.78) 0%, rgba(8, 9, 15, 0.88) 40%, rgba(8, 9, 15, 0.96) 100%);
            z-index: 1;
        }

        .hero-home::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 40%, rgba(0, 82, 255, 0.3) 0%, transparent 60%),
                        radial-gradient(ellipse at 80% 60%, rgba(0, 240, 255, 0.15) 0%, transparent 55%),
                        radial-gradient(ellipse at 50% 20%, rgba(255, 215, 0, 0.08) 0%, transparent 40%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 3rem;
        }

        .hero-main {
            flex: 1 1 100%;
            max-width: 100%;
        }

        .hero-profile-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1.8rem;
            margin-bottom: 2rem;
        }

        .hero-avatar {
            width: 110px;
            height: 110px;
            border-radius: 50%;
            border: 3px solid var(--accent-cyan);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.5), 0 0 55px rgba(0, 82, 255, 0.25);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 50%;
        }

        .hero-name-group {
            flex: 1;
            min-width: 200px;
        }

        .hero-name {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.4px;
            margin-bottom: 0.2rem;
        }

        .hero-handle {
            font-size: 1rem;
            color: var(--accent-cyan);
            font-weight: 500;
        }

        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            margin-top: 0.8rem;
        }

        .hero-stat-chip {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.1rem;
            border-radius: 50px;
            background: rgba(0, 0, 0, 0.5);
            border: 1px solid var(--glass-border);
            font-size: 0.88rem;
            color: var(--text-silver);
            font-weight: 600;
            white-space: nowrap;
        }

        .hero-stat-chip i {
            color: var(--accent-cyan);
            font-size: 0.9rem;
        }

        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-top: 1.5rem;
        }

        .hero-title {
            font-size: clamp(2rem, 5vw, 3.8rem);
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 1.2rem;
            color: var(--text-white);
            text-shadow: 0 0 40px rgba(0, 240, 255, 0.3);
        }

        .hero-subtitle {
            font-size: clamp(1.05rem, 1.8vw, 1.25rem);
            color: var(--text-silver);
            line-height: 1.65;
            max-width: 780px;
            margin-bottom: 2rem;
        }

        .hero-side-panel {
            flex: 1 1 360px;
            max-width: 420px;
            min-width: 300px;
        }

        .hero-panel-inner {
            padding: 2rem;
        }

        .panel-label-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1.5rem;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .panel-label {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.6px;
        }

        .panel-live-dot {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.82rem;
            color: #0f0;
        }

        .panel-live-dot::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #0f0;
            box-shadow: 0 0 8px #0f0;
            animation: pulse-dot 1.5s infinite;
        }

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

        .panel-list-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.5rem;
            padding: 0.8rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.92rem;
            color: var(--text-silver);
        }

        .panel-list-item:last-child {
            border-bottom: none;
        }

        .panel-list-item .val {
            font-weight: 700;
            color: var(--text-white);
        }

        .divider-glow {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
            margin: 1.5rem 0;
            opacity: 0.4;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 1rem;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid var(--border-subtle);
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.6px;
            margin-bottom: 1rem;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.65;
            max-width: 760px;
        }

        .screenshot-stage {
            position: relative;
            padding: 4rem 0 5rem;
            background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
        }

        .screenshot-stage::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-blue), transparent);
            opacity: 0.5;
        }

        .screenshot-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .screenshot-card {
            overflow: hidden;
            border-radius: var(--radius-md);
            background: var(--bg-tertiary);
            border: 1px solid var(--glass-border);
            transition: all var(--transition-med);
            cursor: pointer;
        }

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

        .screenshot-card .img-wrap {
            height: 210px;
            overflow: hidden;
            background: #0a0c14;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .screenshot-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-med);
        }

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

        .screenshot-card .card-body {
            padding: 1.2rem 1.3rem;
        }

        .screenshot-card .card-body h4 {
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
            color: var(--text-white);
        }

        .screenshot-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-slate);
            margin-bottom: 0;
            line-height: 1.5;
        }

        .steps-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .step-item {
            padding: 2rem 1.6rem;
            border-radius: var(--radius-md);
            background: rgba(13, 17, 30, 0.6);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
        }

        .step-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            opacity: 0.7;
        }

        .step-item:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-glow-blue);
            transform: translateY(-3px);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 1rem;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
        }

        .step-item h4 {
            font-size: 1.15rem;
            margin-bottom: 0.5rem;
        }

        .step-item p {
            font-size: 0.9rem;
            color: var(--text-slate);
            line-height: 1.55;
            margin-bottom: 0;
        }

        .assurance-bar {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.2rem;
            margin-top: 2rem;
        }

        .assurance-item {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            padding: 1.3rem 1.4rem;
            border-radius: var(--radius-sm);
            background: rgba(13, 17, 30, 0.55);
            border: 1px solid var(--glass-border);
            transition: all var(--transition-med);
        }

        .assurance-item:hover {
            border-color: var(--border-strong);
            background: rgba(13, 17, 30, 0.8);
            box-shadow: var(--shadow-soft);
        }

        .assurance-item i {
            font-size: 1.4rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
            width: 32px;
            text-align: center;
        }

        .assurance-item .assurance-title {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.15rem;
        }

        .assurance-item .assurance-desc {
            font-size: 0.82rem;
            color: var(--text-slate);
            line-height: 1.45;
            margin-bottom: 0;
        }

        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .review-card {
            padding: 1.8rem 1.6rem;
            border-radius: var(--radius-md);
            background: rgba(13, 17, 30, 0.65);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            transition: all var(--transition-med);
        }

        .review-card:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-glow-blue);
        }

        .review-stars {
            color: var(--accent-gold);
            font-size: 0.9rem;
            letter-spacing: 2px;
            margin-bottom: 0.7rem;
        }

        .review-text {
            font-size: 0.92rem;
            color: var(--text-silver);
            line-height: 1.6;
            margin-bottom: 1rem;
            font-style: italic;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.88rem;
            color: var(--text-slate);
        }

        .review-author i {
            color: var(--accent-cyan);
        }

        .faq-list {
            margin-top: 2rem;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .faq-item {
            border-radius: var(--radius-sm);
            background: rgba(13, 17, 30, 0.55);
            border: 1px solid var(--glass-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-question {
            padding: 1.2rem 1.5rem;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.8rem;
            letter-spacing: -0.1px;
        }

        .faq-question i {
            color: var(--accent-cyan);
            transition: transform var(--transition-fast);
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 0 1.5rem 1.3rem;
            font-size: 0.92rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

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

        .cms-section {
            background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
        }

        .cms-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2rem;
            margin-top: 2rem;
        }

        .cms-main-list {
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }

        .cms-main-item {
            display: flex;
            align-items: flex-start;
            gap: 1.2rem;
            padding: 1.3rem 1.5rem;
            border-radius: var(--radius-sm);
            background: rgba(13, 17, 30, 0.5);
            border: 1px solid var(--glass-border);
            transition: all var(--transition-fast);
            text-decoration: none;
            color: inherit;
        }

        .cms-main-item:hover {
            border-color: var(--border-strong);
            background: rgba(13, 17, 30, 0.8);
            box-shadow: var(--shadow-soft);
            color: inherit;
        }

        .cms-index-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-subtle);
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
            margin-top: 0.2rem;
        }

        .cms-main-item .cms-content {
            flex: 1;
            min-width: 0;
        }

        .cms-main-item .cms-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.3rem;
            letter-spacing: -0.1px;
            line-height: 1.4;
        }

        .cms-main-item .cms-summary {
            font-size: 0.88rem;
            color: var(--text-slate);
            line-height: 1.5;
            margin-bottom: 0.4rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-main-item .cms-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .cms-main-item .cms-meta i {
            color: var(--accent-cyan);
        }

        .cms-sidebar {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .cms-side-card {
            padding: 1.2rem 1.3rem;
        }

        .cms-side-card h4 {
            font-size: 1rem;
            margin-bottom: 0.8rem;
            color: var(--accent-cyan);
        }

        .cms-side-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .cms-side-list a {
            font-size: 0.86rem;
            color: var(--text-silver);
            padding: 0.45rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            display: block;
            transition: all var(--transition-fast);
            line-height: 1.4;
        }

        .cms-side-list a:hover {
            color: var(--accent-cyan);
            padding-left: 0.4rem;
        }

        .cms-empty {
            text-align: center;
            padding: 2.5rem 1.5rem;
            color: var(--text-slate);
            font-size: 1rem;
            background: rgba(13, 17, 30, 0.5);
            border-radius: var(--radius-sm);
            border: 1px dashed var(--border-subtle);
        }

        .guest-section {
            background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
        }

        .guest-track {
            display: flex;
            gap: 1.2rem;
            overflow-x: auto;
            padding-bottom: 1rem;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--border-strong) transparent;
        }

        .guest-track::-webkit-scrollbar {
            height: 6px;
        }

        .guest-track::-webkit-scrollbar-track {
            background: transparent;
        }

        .guest-track::-webkit-scrollbar-thumb {
            background: var(--border-strong);
            border-radius: 50px;
        }

        .guest-card {
            flex: 0 0 280px;
            scroll-snap-align: start;
            padding: 1.5rem 1.4rem;
            border-radius: var(--radius-md);
            background: rgba(13, 17, 30, 0.65);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            transition: all var(--transition-med);
            display: flex;
            flex-direction: column;
        }

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

        .guest-avatar-row {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            margin-bottom: 1rem;
        }

        .guest-avatar {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            overflow: hidden;
            border: 2px solid var(--border-strong);
            flex-shrink: 0;
            background: var(--bg-tertiary);
        }

        .guest-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .guest-name {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .guest-role {
            font-size: 0.8rem;
            color: var(--accent-cyan);
        }

        .guest-desc {
            font-size: 0.86rem;
            color: var(--text-slate);
            line-height: 1.55;
            margin-bottom: 1rem;
            flex: 1;
        }

        .guest-link {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-gold);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: all var(--transition-fast);
        }

        .guest-link:hover {
            color: var(--text-white);
        }

        .promo-tier-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .promo-tier {
            padding: 2rem 1.8rem;
            border-radius: var(--radius-md);
            background: rgba(13, 17, 30, 0.55);
            border: 1px solid var(--glass-border);
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .promo-tier:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-glow-gold);
            transform: translateY(-3px);
        }

        .promo-tier.highlight {
            border-color: var(--border-gold);
            box-shadow: 0 0 25px rgba(255, 215, 0, 0.2);
        }

        .promo-tier .tier-badge {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-gold);
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--accent-gold);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 1rem;
            align-self: flex-start;
        }

        .promo-tier .tier-amount {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            margin-bottom: 0.3rem;
        }

        .promo-tier .tier-amount span {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-slate);
        }

        .promo-tier .tier-desc {
            font-size: 0.88rem;
            color: var(--text-slate);
            line-height: 1.55;
            margin-bottom: 1.2rem;
            flex: 1;
        }

        .promo-tier .tier-progress {
            height: 6px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            margin-bottom: 0.6rem;
            overflow: hidden;
        }

        .promo-tier .tier-progress-bar {
            height: 100%;
            border-radius: 50px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
        }

        .promo-tier .tier-remaining {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }

        .download-guide-section {
            background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
            position: relative;
            overflow: hidden;
        }

        .download-guide-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 50%, rgba(0, 82, 255, 0.18) 0%, transparent 60%),
                        radial-gradient(ellipse at 30% 50%, rgba(0, 240, 255, 0.08) 0%, transparent 50%);
            pointer-events: none;
        }

        .download-card {
            position: relative;
            z-index: 1;
            max-width: 680px;
            margin: 0 auto;
            text-align: center;
            padding: 3rem 2.5rem;
        }

        .download-card .dl-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            font-size: 2rem;
            color: #fff;
            margin-bottom: 1.5rem;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
        }

        .footer-main {
            background: #05060a;
            border-top: 1px solid var(--glass-border);
            padding: 3rem 0 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 2rem;
        }

        .footer-brand {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.8rem;
            line-height: 1.4;
        }

        .footer-brand-desc {
            font-size: 0.86rem;
            color: var(--text-slate);
            line-height: 1.55;
            margin-bottom: 0.5rem;
        }

        .footer-credit {
            font-size: 0.78rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 0.8rem;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }

        .footer-links a {
            font-size: 0.86rem;
            color: var(--text-slate);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 2rem;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .fab-fixed {
            position: fixed;
            left: 1.1rem;
            bottom: 6rem;
            z-index: 90;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1.2rem;
            border-radius: 50px;
            background: rgba(0, 0, 0, 0.62);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            background-clip: padding-box;
            cursor: pointer;
            font-weight: 700;
            font-size: 0.82rem;
            color: var(--text-white);
            letter-spacing: 0.3px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-med);
            text-decoration: none;
            opacity: 0.6;
            min-width: 48px;
            min-height: 48px;
            justify-content: center;
            animation: fab-breathing 3s infinite;
        }

        .fab-fixed::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50px;
            background: linear-gradient(135deg, #ccff00, #00f0ff, #0052ff);
            z-index: -1;
            opacity: 0.7;
            transition: opacity var(--transition-med);
        }

        .fab-fixed:hover {
            opacity: 1;
            color: var(--text-white);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8), 0 0 45px rgba(0, 82, 255, 0.4);
            transform: scale(1.05);
        }

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

        .fab-fixed i {
            font-size: 1.1rem;
            color: var(--accent-cyan);
        }

        .fab-fixed .fab-text {
            font-size: 0.78rem;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        @keyframes fab-breathing {
            0%, 100% { opacity: 0.55; }
            50% { opacity: 0.85; }
        }

        @media (max-width: 1024px) {
            .hero-home {
                min-height: 520px;
                padding: 3.5rem 0 5rem;
            }

            .hero-inner {
                gap: 2rem;
            }

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

            .cms-sidebar {
                flex-direction: row;
                flex-wrap: wrap;
            }

            .cms-side-card {
                flex: 1 1 280px;
            }
        }

        @media (max-width: 768px) {
            .section-pad {
                padding: 3rem 0;
            }

            .section-pad-sm {
                padding: 2.5rem 0;
            }

            .nav-inner {
                flex-wrap: nowrap;
            }

            .nav-links {
                display: none;
            }

            .hamburger-toggle {
                display: flex;
            }

            .nav-btn-login {
                padding: 0.45rem 1rem;
                font-size: 0.82rem;
            }

            .nav-btn-signup {
                padding: 0.5rem 1.2rem;
                font-size: 0.82rem;
            }

            .hero-home {
                min-height: auto;
                padding: 3rem 0 4rem;
            }

            .hero-profile-row {
                gap: 1.2rem;
            }

            .hero-avatar {
                width: 85px;
                height: 85px;
            }

            .hero-name {
                font-size: 1.3rem;
            }

            .hero-title {
                font-size: clamp(1.7rem, 6vw, 2.4rem);
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .hero-side-panel {
                flex: 1 1 100%;
                max-width: 100%;
                min-width: auto;
            }

            .guest-card {
                flex: 0 0 240px;
            }

            .cms-main-item {
                padding: 1rem 1.2rem;
                gap: 0.8rem;
            }

            .cms-index-num {
                width: 30px;
                height: 30px;
                font-size: 0.8rem;
            }

            .download-card {
                padding: 2rem 1.5rem;
            }

            .download-card .dl-icon {
                width: 65px;
                height: 65px;
                font-size: 1.6rem;
            }

            .fab-fixed {
                padding: 0.55rem 1rem;
                font-size: 0.75rem;
                bottom: 5rem;
                left: 0.8rem;
            }

            .fab-fixed .fab-text {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 0.95rem;
            }

            .nav-logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }

            .nav-btn-login,
            .nav-btn-signup {
                padding: 0.4rem 0.9rem;
                font-size: 0.78rem;
            }

            .hero-stats-row {
                gap: 0.6rem;
            }

            .hero-stat-chip {
                padding: 0.4rem 0.8rem;
                font-size: 0.76rem;
                gap: 0.3rem;
            }

            .hero-title {
                font-size: 1.6rem;
                letter-spacing: -0.3px;
            }

            .hero-subtitle {
                font-size: 0.92rem;
                line-height: 1.55;
            }

            .hero-cta-row {
                flex-direction: column;
                gap: 0.6rem;
            }

            .btn-glow {
                width: 100%;
                padding: 0.75rem 1.4rem;
                font-size: 0.9rem;
            }

            .section-label {
                font-size: 0.72rem;
                padding: 0.3rem 0.8rem;
            }

            .screenshot-card .img-wrap {
                height: 180px;
            }

            .promo-tier {
                padding: 1.5rem 1.3rem;
            }

            .promo-tier .tier-amount {
                font-size: 1.7rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-tertiary: #111827;
            --bg-glass: rgba(13, 17, 30, 0.72);
            --bg-glass-border: rgba(0, 82, 255, 0.28);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-cyan-glow: rgba(0, 240, 255, 0.45);
            --accent-blue-glow: rgba(0, 82, 255, 0.4);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #64748B;
            --border-color: rgba(0, 240, 255, 0.18);
            --border-strong: rgba(0, 240, 255, 0.35);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow-cyan: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-glow-blue: 0 0 24px rgba(0, 82, 255, 0.3);
            --transition-fast: 0.2s ease;
            --transition-med: 0.35s ease;
            --transition-slow: 0.5s ease;
            --font-main: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --line-height-body: 1.65;
            --line-height-heading: 1.25;
        }

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

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

        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: var(--line-height-body);
            color: var(--text-secondary);
            background-color: var(--bg-primary);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            background-image:
                radial-gradient(circle at 15% 20%, rgba(0, 82, 255, 0.06) 0%, transparent 50%),
                radial-gradient(circle at 85% 70%, rgba(0, 240, 255, 0.04) 0%, transparent 50%),
                repeating-linear-gradient(90deg, rgba(0, 240, 255, 0.015) 0px, rgba(0, 240, 255, 0.015) 1px, transparent 1px, transparent 40px),
                repeating-linear-gradient(0deg, rgba(0, 240, 255, 0.015) 0px, rgba(0, 240, 255, 0.015) 1px, transparent 1px, transparent 40px);
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            color: var(--text-primary);
            line-height: var(--line-height-heading);
            font-weight: 700;
            margin: 0 0 0.75em;
        }

        h1 {
            font-size: clamp(2rem, 4.5vw, 3.5rem);
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }

        h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            letter-spacing: -0.01em;
            margin-bottom: 0.75rem;
        }

        h3 {
            font-size: clamp(1.1rem, 2vw, 1.45rem);
            margin-bottom: 0.6rem;
        }

        p {
            margin: 0 0 1rem;
            color: var(--text-secondary);
        }

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

        a:hover {
            color: #FFFFFF;
        }

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

        button, .button {
            cursor: pointer;
            font-family: var(--font-main);
        }

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

        .skip-link {
            position: absolute;
            top: -60px;
            left: 16px;
            background: var(--accent-blue);
            color: #fff;
            padding: 10px 18px;
            border-radius: 8px;
            z-index: 9999;
            font-weight: 600;
            transition: top 0.3s;
        }
        .skip-link:focus {
            top: 12px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: box-shadow var(--transition-med);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
            gap: 16px;
            flex-wrap: nowrap;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            line-height: 1.3;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            max-width: 340px;
        }
        .nav-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow-blue);
        }
        .nav-logo span {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: nowrap;
        }
        .nav-links li {
            margin: 0;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .nav-links a:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
            border-color: var(--border-color);
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--border-strong);
            font-weight: 600;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-login {
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-login:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }
        .btn-signup {
            padding: 9px 20px;
            border-radius: 8px;
            font-size: 0.88rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0066ff);
            border: none;
            text-decoration: none;
            box-shadow: var(--shadow-glow-blue);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-signup:hover {
            background: linear-gradient(135deg, #0066ff, var(--accent-cyan));
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.45);
            color: #fff;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 8px;
            width: 42px;
            height: 40px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Mobile menu */
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 20px 16px;
            background: rgba(8, 9, 15, 0.96);
            border-bottom: 1px solid var(--border-color);
        }
        .mobile-menu a {
            display: block;
            padding: 10px 14px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-weight: 500;
            text-decoration: none;
            border: 1px solid transparent;
            transition: all var(--transition-fast);
        }
        .mobile-menu a:hover, .mobile-menu a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
            border-color: var(--border-color);
        }
        .mobile-menu .nav-cta {
            display: flex;
            gap: 10px;
            padding-top: 6px;
        }

        /* ============ HERO ============ */
        .hero-section {
            padding: 60px 0 44px;
            position: relative;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 40px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.07);
            border: 1px solid var(--border-strong);
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 1.5rem;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 13px 28px;
            border-radius: 10px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0066ff);
            border: none;
            text-decoration: none;
            box-shadow: var(--shadow-glow-blue);
            transition: all var(--transition-med);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #0066ff, var(--accent-cyan));
            box-shadow: 0 0 34px rgba(0, 240, 255, 0.5);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 24px;
            border-radius: 10px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(0, 240, 255, 0.04);
            border: 1px solid var(--border-color);
            text-decoration: none;
            transition: all var(--transition-med);
        }
        .btn-secondary:hover {
            color: #fff;
            border-color: var(--border-strong);
            background: rgba(0, 240, 255, 0.1);
        }

        .hero-status-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            margin-top: 4px;
        }
        .status-item {
            display: flex;
            align-items: center;
            gap: 7px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22c55e;
            box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        .hero-icon-matrix {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
        }
        .hero-icon-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 18px 14px;
            text-align: center;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-med);
        }
        .hero-icon-item:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-3px);
        }
        .hero-icon-item i {
            font-size: 1.7rem;
            color: var(--accent-cyan);
            margin-bottom: 8px;
            display: block;
        }
        .hero-icon-item span {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-secondary);
            line-height: 1.35;
            display: block;
        }

        /* ============ SECTIONS ============ */
        .section {
            padding: 52px 0;
        }
        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-label {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.74rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.07);
            border: 1px solid var(--border-color);
            margin-bottom: 12px;
        }
        .section-title-left {
            text-align: left;
        }

        /* ============ PAIN POINT ============ */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin-bottom: 28px;
        }
        .pain-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-med);
        }
        .pain-card:hover {
            border-color: rgba(255, 99, 99, 0.4);
            box-shadow: 0 0 20px rgba(255, 99, 99, 0.15);
        }
        .pain-card-icon {
            color: #ef4444;
            font-size: 1.3rem;
            margin-bottom: 10px;
        }
        .pain-card h3 {
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .pain-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* ============ STRATEGY CARDS ============ */
        .strategy-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }
        .strategy-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            gap: 18px;
            align-items: flex-start;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-med);
        }
        .strategy-card:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateX(4px);
        }
        .strategy-number {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            font-weight: 800;
            font-size: 1.15rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow-blue);
        }
        .strategy-content h3 {
            margin-bottom: 6px;
            font-size: 1.1rem;
        }
        .strategy-content p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .strategy-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.07);
            border: 1px solid var(--border-color);
        }

        /* ============ PROCESS / STEPS ============ */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 18px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-glass);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px;
            position: relative;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-med);
        }
        .process-step:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-glow-blue);
        }
        .process-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -12px;
            left: 20px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent-blue);
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-glow-blue);
        }
        .process-step h4 {
            font-size: 0.98rem;
            margin-bottom: 6px;
            margin-top: 6px;
        }
        .process-step p {
            font-size: 0.84rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* ============ RESULTS/STATS ============ */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
        }
        .stat-box {
            background: var(--bg-glass);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-med);
        }
        .stat-box:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-glow-cyan);
        }
        .stat-number {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 4px;
            letter-spacing: -0.01em;
        }
        .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ============ TESTIMONIAL / QUOTE ============ */
        .quote-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 18px;
        }
        .quote-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-med);
        }
        .quote-card:hover {
            border-color: var(--border-strong);
        }
        .quote-text {
            font-style: italic;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .quote-author {
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .quote-role {
            font-size: 0.76rem;
            color: var(--text-muted);
        }

        /* ============ FAQ ============ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-med);
        }
        .faq-item:hover {
            border-color: var(--border-strong);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-family: var(--font-main);
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-med);
            flex-shrink: 0;
        }
        .faq-question.active i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-answer.open {
            max-height: 300px;
            padding-bottom: 18px;
        }
        .faq-answer p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0;
        }

        /* ============ CTA ============ */
        .cta-section {
            padding: 56px 0;
            text-align: center;
            position: relative;
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.08));
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-lg);
            padding: 40px 28px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-glow-blue);
        }
        .cta-box h2 {
            margin-bottom: 10px;
        }
        .cta-box p {
            max-width: 560px;
            margin: 0 auto 22px;
            color: var(--text-secondary);
        }

        /* ============ FAB ============ */
        .fab-container {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 950;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .fab-btn {
            width: 56px;
            height: 56px;
            border-radius: 50px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), linear-gradient(135deg, #00F0FF, #0052FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.45);
            opacity: 0.65;
            transition: all var(--transition-med);
            position: relative;
            min-width: 48px;
            min-height: 48px;
        }
        .fab-btn:hover {
            opacity: 1;
            box-shadow: 0 0 26px rgba(0, 240, 255, 0.7);
            transform: scale(1.08);
        }
        .fab-btn:active {
            transform: scale(0.94);
            border-color: #FF007F;
            color: #FF007F;
        }
        .fab-notice {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #FF007F;
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.7);
            animation: fab-breathe 1.8s infinite;
        }
        @keyframes fab-breathe {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(1.2); }
        }
        .fab-label {
            background: rgba(0, 0, 0, 0.8);
            color: #fff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            white-space: nowrap;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--border-color);
        }

        /* ============ FOOTER ============ */
        .footer-main {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 42px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 28px;
            margin-bottom: 28px;
        }
        .footer-brand {
            font-weight: 800;
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .footer-brand-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            line-height: 1.6;
        }
        .footer-credit {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin: 0;
        }
        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 0.84rem;
            color: var(--text-secondary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 7px;
            transition: all var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
            transform: translateX(3px);
        }
        .footer-links i {
            font-size: 0.62rem;
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-icon-matrix {
                grid-template-columns: repeat(3, 1fr);
                max-width: 480px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-wrapper {
                flex-wrap: wrap;
            }
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu.open {
                display: flex;
            }
            .hero-section {
                padding: 40px 0 32px;
            }
            .section {
                padding: 40px 0;
            }
            .strategy-card {
                flex-direction: column;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                max-width: 220px;
                font-size: 0.88rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-icon-matrix {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 28px 18px;
            }
            .fab-container {
                bottom: 80px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-cyber-navy: #111827;
            --bg-card: rgba(13, 17, 30, 0.72);
            --bg-glass: rgba(13, 17, 30, 0.55);
            --border-glass: rgba(0, 240, 255, 0.18);
            --border-glass-hover: rgba(0, 240, 255, 0.42);
            --accent-blue: #0052FF;
            --accent-blue-hover: #1a66ff;
            --accent-cyan: #00F0FF;
            --accent-lime: #34D399;
            --accent-amber: #FBBF24;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #7C8BA1;
            --text-dark: #1F2937;
            --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
            --shadow-glow-blue: 0 0 20px rgba(0, 82, 255, 0.35);
            --shadow-glow-cyan: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-glow-fab: 0 0 15px rgba(0, 240, 255, 0.5);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Be Vietnam Pro', 'Inter', 'Segoe UI', 'Roboto', sans-serif;
            --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--accent-cyan); text-decoration: none; transition: var(--transition-fast); }
        a:hover { color: #00d5e0; }
        ul, ol { list-style-position: inside; }
        button { font-family: inherit; cursor: pointer; }
        input, textarea, select { font-family: inherit; }
        :focus-visible { outline: 2px solid var(--accent-cyan); outline-offset: 2px; }

        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-glass);
            transition: var(--transition-fast);
        }
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            border-bottom-color: rgba(0, 240, 255, 0.35);
            box-shadow: 0 4px 30px rgba(0,0,0,0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 0;
            flex-wrap: nowrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            text-decoration: none;
            color: var(--text-primary);
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: var(--shadow-glow-blue);
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.3px;
            color: var(--text-primary);
        }
        .logo-text span {
            display: block;
            font-size: 0.72rem;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.5px;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: flex-end;
            min-width: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
        }
        .nav-links li a {
            display: block;
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: 10px;
            transition: var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.08);
        }
        .nav-links li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }
        .auth-buttons {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            margin-left: 8px;
        }
        .btn-login {
            padding: 8px 18px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: transparent;
            border: none;
            border-radius: 10px;
            transition: var(--transition-fast);
            white-space: nowrap;
        }
        .btn-login:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-signup {
            padding: 9px 20px;
            font-size: 0.82rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0068ff);
            border: none;
            border-radius: 10px;
            transition: var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.4);
        }
        .btn-signup:hover {
            background: linear-gradient(135deg, #1a66ff, #0080ff);
            box-shadow: 0 6px 25px rgba(0, 82, 255, 0.55);
            transform: translateY(-1px);
            color: #fff;
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: rgba(0,240,255,0.08);
            border: 1px solid var(--border-glass);
            border-radius: 10px;
            padding: 10px;
            flex-shrink: 0;
        }
        .nav-hamburger .hamburger-line {
            display: block;
            height: 2px;
            width: 100%;
            background: var(--accent-cyan);
            border-radius: 2px;
            transition: var(--transition-fast);
        }
        .nav-mobile {
            display: none;
            padding: 8px 0 16px;
            border-top: 1px solid var(--border-glass);
        }
        .nav-mobile.is-open {
            display: block;
        }
        .nav-mobile ul {
            list-style: none;
            padding: 0;
            margin: 0 0 12px;
        }
        .nav-mobile ul li a {
            display: block;
            padding: 12px 16px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: 10px;
            transition: var(--transition-fast);
        }
        .nav-mobile ul li a:hover,
        .nav-mobile ul li a.active {
            color: var(--accent-cyan);
            background: rgba(0,240,255,0.08);
        }
        .nav-mobile .auth-buttons {
            margin-left: 0;
            padding: 0 8px;
        }
        .nav-mobile .auth-buttons a {
            flex: 1;
            text-align: center;
        }

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: flex-end;
            padding: 130px 0 48px;
            background-image: linear-gradient(rgba(8,9,15,0.55) 0%, rgba(8,9,15,0.75) 55%, var(--bg-primary) 100%), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            margin-bottom: 0;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to bottom, transparent, var(--bg-primary));
            pointer-events: none;
        }
        .article-banner-inner {
            position: relative;
            z-index: 2;
        }
        .article-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }
        .badge-tag {
            padding: 6px 14px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.4px;
            border-radius: 100px;
            background: rgba(0,240,255,0.12);
            color: var(--accent-cyan);
            border: 1px solid rgba(0,240,255,0.3);
            white-space: nowrap;
        }
        .badge-tag.red {
            background: rgba(239,68,68,0.12);
            color: #F87171;
            border-color: rgba(239,68,68,0.3);
        }
        .article-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 16px;
            max-width: 900px;
            color: var(--text-primary);
        }
        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .article-meta-row i {
            color: var(--accent-cyan);
            margin-right: 6px;
        }

        /* ========== BREADCRUMBS ========== */
        .breadcrumbs-wrap {
            padding: 20px 0 0;
            border-bottom: 1px solid var(--border-glass);
            background: var(--bg-primary);
        }
        .breadcrumbs {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .breadcrumbs a {
            color: var(--text-secondary);
        }
        .breadcrumbs a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumbs .separator {
            margin: 0 8px;
            color: var(--text-muted);
        }
        .breadcrumbs .current {
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* ========== ARTICLE MAIN ========== */
        .article-main {
            padding: 48px 0 0;
        }
        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 48px;
        }
        .article-content-col {
            min-width: 0;
        }

        /* Pull Quote */
        .pull-quote {
            position: relative;
            padding: 28px 32px;
            margin: 0 0 36px;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            overflow: hidden;
        }
        .pull-quote::before {
            content: '"';
            position: absolute;
            top: -18px;
            left: 20px;
            font-size: 6rem;
            font-weight: 900;
            color: rgba(0,240,255,0.15);
            font-family: Georgia, serif;
            line-height: 1;
            pointer-events: none;
        }
        .pull-quote::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(to bottom, var(--accent-blue), var(--accent-cyan));
            border-radius: 4px 0 0 4px;
        }
        .pull-quote p {
            font-size: 1.25rem;
            font-weight: 600;
            line-height: 1.6;
            color: var(--text-secondary);
            font-style: italic;
            margin: 0;
            position: relative;
            z-index: 1;
        }

        /* Article Body */
        .article-body {
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-secondary);
        }
        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 40px 0 16px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 32px 0 12px;
            line-height: 1.35;
        }
        .article-body p {
            margin-bottom: 18px;
        }
        .article-body ul, .article-body ol {
            margin: 0 0 20px 24px;
            padding: 0;
        }
        .article-body li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 4px;
        }
        .article-body blockquote {
            margin: 28px 0;
            padding: 20px 24px;
            background: rgba(0,240,255,0.04);
            border-left: 3px solid var(--accent-cyan);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-primary);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
        }
        .article-body a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: #00d5e0;
        }

        /* Article Not Found */
        .article-not-found {
            padding: 60px 30px;
            text-align: center;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 80px;
            align-self: start;
        }
        .sidebar-widget {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 22px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .sidebar-widget h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.2px;
        }
        .sidebar-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-link-list li {
            margin-bottom: 6px;
        }
        .sidebar-link-list li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: var(--transition-fast);
        }
        .sidebar-link-list li a:hover {
            background: rgba(0,240,255,0.06);
            color: var(--accent-cyan);
        }
        .sidebar-link-list li a i {
            color: var(--accent-cyan);
            font-size: 0.7rem;
            flex-shrink: 0;
        }
        .sidebar-cta-card {
            background: linear-gradient(135deg, rgba(0,82,255,0.15), rgba(0,240,255,0.08));
            border: 1px solid rgba(0,240,255,0.25);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
        }
        .sidebar-cta-card .cta-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            margin: 0 auto 14px;
            box-shadow: var(--shadow-glow-blue);
        }
        .sidebar-cta-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        /* ========== BUTTONS ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0068ff);
            border: none;
            border-radius: 12px;
            transition: var(--transition-fast);
            box-shadow: 0 4px 20px rgba(0, 82, 255, 0.4);
            text-decoration: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #1a66ff, #0080ff);
            box-shadow: 0 6px 30px rgba(0, 82, 255, 0.6);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary.cyan {
            background: linear-gradient(135deg, #0090a8, var(--accent-cyan));
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.35);
        }
        .btn-primary.cyan:hover {
            background: linear-gradient(135deg, #00a8c0, #00e6ff);
            box-shadow: 0 6px 30px rgba(0, 240, 255, 0.5);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.35);
            border-radius: 12px;
            transition: var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: rgba(0, 240, 255, 0.6);
            color: var(--accent-cyan);
        }

        /* ========== NARRATIVE CONVERSION FLOW ========== */
        .conversion-flow {
            margin-top: 56px;
            padding: 48px 0 0;
            border-top: 1px solid var(--border-glass);
        }
        .conversion-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 8px;
        }
        .conversion-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 36px;
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 36px;
        }
        .flow-step {
            padding: 24px;
            border-radius: var(--radius-lg);
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: var(--transition-fast);
        }
        .flow-step:hover {
            border-color: var(--border-glass-hover);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-3px);
        }
        .flow-step.pain {
            border-left: 4px solid #EF4444;
        }
        .flow-step.solution {
            border-left: 4px solid var(--accent-blue);
        }
        .flow-step.result {
            border-left: 4px solid var(--accent-lime);
        }
        .flow-step.testimonial {
            border-left: 4px solid var(--accent-amber);
        }
        .flow-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            font-size: 0.9rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .flow-step.pain .step-number { background: rgba(239,68,68,0.2); color: #F87171; }
        .flow-step.solution .step-number { background: rgba(0,82,255,0.2); color: #60A5FA; }
        .flow-step.result .step-number { background: rgba(52,211,153,0.2); color: #34D399; }
        .flow-step.testimonial .step-number { background: rgba(251,191,36,0.2); color: #FBBF24; }
        .flow-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .flow-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }
        .flow-cta {
            text-align: center;
            padding: 36px 28px;
            background: linear-gradient(135deg, rgba(0,82,255,0.12), rgba(0,240,255,0.06));
            border-radius: var(--radius-xl);
            border: 1px solid rgba(0,240,255,0.25);
        }
        .flow-cta p {
            font-size: 1.1rem;
            color: var(--text-primary);
            margin-bottom: 20px;
            font-weight: 600;
        }

        /* ========== FAQ ========== */
        .faq-section {
            margin-top: 56px;
            padding: 48px 0 0;
            border-top: 1px solid var(--border-glass);
        }
        .faq-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 8px;
        }
        .faq-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 32px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-glass-hover);
        }
        .faq-item .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 0.95rem;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            transition: var(--transition-fast);
        }
        .faq-item .faq-question i {
            color: var(--accent-cyan);
            font-size: 0.85rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 22px 20px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            display: none;
        }
        .faq-item .faq-answer.is-visible {
            display: block;
        }

        /* ========== RELATED POSTS ========== */
        .related-section {
            margin-top: 56px;
            padding: 48px 0 0;
            border-top: 1px solid var(--border-glass);
        }
        .related-title {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 24px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }
        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-fast);
            text-decoration: none;
        }
        .related-card:hover {
            border-color: var(--border-glass-hover);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-3px);
        }
        .related-card .related-img {
            height: 170px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .related-card .related-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(8,9,15,0.7), transparent);
        }
        .related-card .related-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .related-body h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card .related-body p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            flex: 1;
        }
        .related-card .related-body span {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-cyan);
        }

        /* ========== FOOTER ========== */
        .footer-main {
            margin-top: 64px;
            padding: 48px 0 28px;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-glass);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1.2fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .footer-brand-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .footer-credit {
            font-size: 0.75rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links li a {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-fast);
        }
        .footer-links li a i {
            font-size: 0.65rem;
            color: var(--accent-cyan);
        }
        .footer-links li a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid var(--border-glass);
            text-align: center;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ========== FAB ========== */
        .fab-cyber {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 600;
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #00F0FF, #0052FF) 1;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.35rem;
            cursor: pointer;
            text-decoration: none;
            box-shadow: var(--shadow-glow-fab);
            transition: var(--transition-fast);
            opacity: 0.6;
            animation: fabBreath 3s ease-in-out infinite;
        }
        .fab-cyber:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7);
            color: #fff;
            background: rgba(0, 82, 255, 0.35);
        }
        .fab-cyber:active {
            transform: scale(0.95);
            border-color: #FF007F;
            color: #FF007F;
        }
        .fab-cyber .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #FF007F;
            border: 2px solid var(--bg-primary);
            animation: fabBlink 1.5s ease-in-out infinite;
        }
        @keyframes fabBreath {
            0%, 100% { transform: translateY(0); opacity: 0.6; }
            50% { transform: translateY(-5px); opacity: 0.85; }
        }
        @keyframes fabBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .nav-links li a { padding: 8px 10px; font-size: 0.78rem; }
            .logo-text { font-size: 0.95rem; }
            .article-layout { grid-template-columns: 1fr; gap: 36px; }
            .article-sidebar { position: static; order: 2; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .nav-hamburger { display: flex; }
            .header-inner { padding: 10px 0; }
            .article-banner { min-height: 380px; padding: 110px 0 32px; }
            .article-banner h1 { font-size: 1.8rem; }
            .pull-quote { padding: 24px 20px 20px 24px; }
            .pull-quote p { font-size: 1.05rem; }
            .article-body { font-size: 0.98rem; }
            .article-body h2 { font-size: 1.35rem; }
            .conversion-title, .faq-title { font-size: 1.5rem; }
            .flow-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 20px; }
            .container-custom { padding: 0 16px; }
            .related-grid { grid-template-columns: 1fr; }
            .fab-cyber { width: 48px; height: 48px; font-size: 1.1rem; left: 12px; bottom: 80px; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.45rem; }
            .article-meta-row { gap: 12px; font-size: 0.75rem; flex-wrap: wrap; }
            .badge-tag { font-size: 0.68rem; padding: 4px 10px; }
            .pull-quote p { font-size: 0.95rem; }
            .article-body { font-size: 0.92rem; }
            .conversion-title, .faq-title { font-size: 1.3rem; }
            .n-pad { padding: 0 12px; }
            .auth-buttons { gap: 4px; }
            .btn-login { padding: 7px 12px; font-size: 0.75rem; }
            .btn-signup { padding: 8px 14px; font-size: 0.75rem; }
        }

/* roulang page: category2 */
/* ============ CSS VARIABLES & RESET ============ */
        :root {
            --color-primary-bg: #0F0C20;
            --color-secondary-bg: #0B1A30;
            --color-tertiary-bg: #131B33;
            --color-accent-lime: #CCFF00;
            --color-accent-cyan: #00F0FF;
            --color-accent-electric: #0052FF;
            --color-text-primary: #FFFFFF;
            --color-text-secondary: #A6ACAF;
            --color-text-muted: #7A8291;
            --color-border-glass: rgba(0, 240, 255, 0.12);
            --color-border-neon: rgba(0, 240, 255, 0.45);
            --color-border-lime: rgba(204, 255, 0, 0.35);
            --color-glass-bg: rgba(15, 12, 32, 0.72);
            --color-glass-card: rgba(19, 27, 51, 0.55);
            --color-glass-highlight: rgba(255, 255, 255, 0.04);
            --color-danger: #FF3B5C;
            --color-success: #22E584;
            --color-gold: #FFD700;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-neon-cyan: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-neon-lime: 0 0 16px rgba(204, 255, 0, 0.2);
            --shadow-deep: 0 20px 60px rgba(0, 0, 0, 0.55);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Be Vietnam Pro', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-display: 'Space Grotesk', var(--font-body);
        }
        
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text-primary);
            background-color: var(--color-primary-bg);
            background-image: 
                radial-gradient(ellipse at 20% 20%, rgba(0, 240, 255, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 80%, rgba(0, 82, 255, 0.08) 0%, transparent 55%),
                linear-gradient(180deg, #0F0C20 0%, #0B1A30 100%);
            background-attachment: fixed;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }
        
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        
        ul,
        ol {
            list-style: none;
        }
        
        /* ============ GRID OVERLAY PATTERN ============ */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                linear-gradient(rgba(0, 240, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, 0.025) 1px, transparent 1px);
            background-size: 52px 52px;
            pointer-events: none;
            z-index: 0;
        }
        
        /* ============ CONTAINER ============ */
        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }
        
        /* ============ HEADER & NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            padding: 14px 0;
            background: rgba(15, 12, 32, 0.78);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border-glass);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }
        
        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.92);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            position: relative;
        }
        
        .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 0;
        }
        
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-electric) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
        }
        
        .logo-text {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 15px;
            line-height: 1.3;
            color: #fff;
            letter-spacing: 0.01em;
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        
        .logo-text span {
            color: var(--color-accent-cyan);
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        
        .nav-links li a {
            display: inline-block;
            padding: 10px 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-secondary);
            border-radius: 8px;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
        }
        
        .nav-links li a:hover {
            color: var(--color-text-primary);
            background: rgba(0, 240, 255, 0.08);
        }
        
        .nav-links li a.active {
            color: var(--color-accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: inset 0 0 0 1px var(--color-border-neon);
        }
        
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        
        .btn-login {
            padding: 10px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-primary);
            background: transparent;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        
        .btn-login:hover {
            color: var(--color-accent-cyan);
        }
        
        .btn-signup {
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 700;
            color: #0F0C20;
            background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-lime) 100%);
            border: none;
            border-radius: 8px;
            cursor: pointer;
            box-shadow: var(--shadow-neon-cyan);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.45);
        }
        
        .btn-signup:active {
            transform: translateY(0) scale(0.97);
        }
        
        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
        }
        
        /* ============ MOBILE NAV DRAWER ============ */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 12, 32, 0.97);
            backdrop-filter: blur(28px);
            -webkit-backdrop-filter: blur(28px);
            z-index: 99;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
            border-top: 1px solid var(--color-border-glass);
        }
        
        .mobile-nav.open {
            display: flex;
        }
        
        .mobile-nav a {
            display: block;
            padding: 14px 18px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-secondary);
            border-radius: 10px;
            transition: all var(--transition-fast);
        }
        
        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--color-accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        
        .mobile-nav .btn-login {
            text-align: left;
            width: 100%;
        }
        
        .mobile-nav .btn-signup {
            text-align: center;
            width: 100%;
            margin-top: 8px;
        }
        
        /* ============ HERO SECTION ============ */
        .hero-category {
            padding-top: 140px;
            padding-bottom: 80px;
            position: relative;
            z-index: 1;
        }
        
        .hero-bg-image {
            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: 0.15;
            pointer-events: none;
            z-index: 0;
        }
        
        .hero-category .container-custom {
            position: relative;
            z-index: 1;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--color-border-neon);
            border-radius: 100px;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        
        .hero-badge i {
            font-size: 12px;
        }
        
        .hero-category h1 {
            font-family: var(--font-display);
            font-size: clamp(32px, 5vw, 56px);
            font-weight: 700;
            line-height: 1.15;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
            max-width: 820px;
        }
        
        .hero-category h1 .accent-cyan {
            color: var(--color-accent-cyan);
        }
        
        .hero-category h1 .accent-lime {
            color: var(--color-accent-lime);
        }
        
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            max-width: 680px;
            margin-bottom: 32px;
            text-align: left;
        }
        
        /* Search Box */
        .hero-search-wrapper {
            max-width: 640px;
            margin: 0 auto 28px;
            position: relative;
        }
        
        .hero-search {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--color-glass-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--color-border-glass);
            border-radius: 50px;
            padding: 6px;
            box-shadow: var(--shadow-glass);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        
        .hero-search:focus-within {
            border-color: var(--color-border-neon);
            box-shadow: var(--shadow-neon-cyan);
        }
        
        .hero-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            padding: 14px 20px;
            font-size: 15px;
            color: #fff;
            min-width: 0;
        }
        
        .hero-search input::placeholder {
            color: var(--color-text-muted);
        }
        
        .hero-search button {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            font-size: 14px;
            font-weight: 700;
            color: #0F0C20;
            background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-lime) 100%);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            white-space: nowrap;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        
        .hero-search button:hover {
            transform: scale(1.03);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.4);
        }
        
        .hero-hot-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            max-width: 640px;
            margin: 0 auto;
        }
        
        .hero-hot-tags span {
            font-size: 13px;
            color: var(--color-text-muted);
            font-weight: 500;
        }
        
        .hero-hot-tags a {
            display: inline-block;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 100px;
            transition: all var(--transition-fast);
        }
        
        .hero-hot-tags a:hover {
            color: var(--color-accent-cyan);
            border-color: var(--color-border-neon);
            background: rgba(0, 240, 255, 0.06);
        }
        
        /* ============ SECTION COMMON ============ */
        .section-block {
            padding: 72px 0;
            position: relative;
            z-index: 1;
        }
        
        .section-block.alt-bg {
            background: rgba(11, 26, 48, 0.55);
            border-top: 1px solid var(--color-border-glass);
            border-bottom: 1px solid var(--color-border-glass);
        }
        
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 14px;
        }
        
        .section-label i {
            font-size: 14px;
        }
        
        .section-title {
            font-family: var(--font-display);
            font-size: clamp(24px, 3.5vw, 38px);
            font-weight: 700;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.015em;
            text-align: left;
        }
        
        .section-desc {
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            max-width: 720px;
            margin-bottom: 40px;
            text-align: left;
        }
        
        /* ============ PAIN POINT SECTION ============ */
        .pain-points-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-bottom: 40px;
        }
        
        .pain-point-card {
            background: var(--color-glass-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 59, 92, 0.2);
            border-radius: var(--radius-md);
            padding: 28px;
            position: relative;
            overflow: hidden;
            transition: border-color var(--transition-smooth), transform var(--transition-smooth), box-shadow var(--transition-smooth);
        }
        
        .pain-point-card:hover {
            border-color: rgba(255, 59, 92, 0.5);
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(255, 59, 92, 0.12);
        }
        
        .pain-point-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(255, 59, 92, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-danger);
            margin-bottom: 16px;
        }
        
        .pain-point-card h3 {
            font-family: var(--font-display);
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
            text-align: left;
        }
        
        .pain-point-card p {
            font-size: 14px;
            line-height: 1.65;
            color: var(--color-text-secondary);
            text-align: left;
        }
        
        /* ============ SOLUTION / ANALYSIS SECTION ============ */
        .analysis-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
            margin-bottom: 40px;
        }
        
        .analysis-text {
            text-align: left;
        }
        
        .analysis-text h3 {
            font-family: var(--font-display);
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            text-align: left;
        }
        
        .analysis-text p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            margin-bottom: 14px;
            text-align: left;
        }
        
        .analysis-image-wrapper {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-glass);
            box-shadow: var(--shadow-glass);
            position: relative;
        }
        
        .analysis-image-wrapper img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        
        .analysis-image-overlay {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        
        .analysis-overlay-badge {
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: rgba(0, 240, 255, 0.9);
            border-radius: 6px;
            letter-spacing: 0.03em;
        }
        
        /* Pattern Cards */
        .pattern-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
            margin-top: 12px;
        }
        
        .pattern-card {
            background: var(--color-glass-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--color-border-glass);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
            transition: border-color var(--transition-smooth), transform var(--transition-smooth), box-shadow var(--transition-smooth);
            cursor: pointer;
        }
        
        .pattern-card:hover {
            border-color: var(--color-border-neon);
            transform: translateY(-3px);
            box-shadow: var(--shadow-neon-cyan);
        }
        
        .pattern-card .pattern-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-accent-cyan);
            margin-bottom: 14px;
        }
        
        .pattern-card h4 {
            font-family: var(--font-display);
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
            text-align: left;
        }
        
        .pattern-card p {
            font-size: 13px;
            line-height: 1.6;
            color: var(--color-text-secondary);
            text-align: left;
        }
        
        /* ============ RESULTS / STATS SECTION ============ */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }
        
        .stat-block {
            background: var(--color-glass-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--color-border-glass);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth);
        }
        
        .stat-block:hover {
            border-color: var(--color-border-lime);
            box-shadow: var(--shadow-neon-lime);
        }
        
        .stat-number {
            font-family: var(--font-display);
            font-size: 34px;
            font-weight: 700;
            color: var(--color-accent-lime);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        
        .stat-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        
        /* ============ TESTIMONIAL SECTION ============ */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            margin-top: 20px;
        }
        
        .testimonial-card {
            background: var(--color-glass-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--color-border-glass);
            border-radius: var(--radius-md);
            padding: 28px;
            position: relative;
            transition: border-color var(--transition-smooth), transform var(--transition-smooth);
        }
        
        .testimonial-card:hover {
            border-color: var(--color-border-neon);
            transform: translateY(-2px);
        }
        
        .testimonial-quote {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            font-style: italic;
            margin-bottom: 18px;
            text-align: left;
        }
        
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-electric) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            color: #fff;
            flex-shrink: 0;
        }
        
        .testimonial-info {
            text-align: left;
        }
        
        .testimonial-name {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
        }
        
        .testimonial-role {
            font-size: 12px;
            color: var(--color-text-muted);
        }
        
        .testimonial-stars {
            color: var(--color-gold);
            font-size: 13px;
            margin-bottom: 10px;
            letter-spacing: 2px;
        }
        
        /* ============ FAQ SECTION ============ */
        .faq-list {
            max-width: 820px;
            margin: 0;
        }
        
        .faq-item {
            border-bottom: 1px solid var(--color-border-glass);
            margin-bottom: 4px;
        }
        
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 0;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            text-align: left;
            background: transparent;
            border: none;
            width: 100%;
            transition: color var(--transition-fast);
        }
        
        .faq-question:hover {
            color: var(--color-accent-cyan);
        }
        
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 14px;
            color: var(--color-text-muted);
            transition: transform var(--transition-fast), color var(--transition-fast);
        }
        
        .faq-item.active .faq-question {
            color: var(--color-accent-cyan);
        }
        
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            color: var(--color-accent-cyan);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        .faq-item.active .faq-answer {
            max-height: 600px;
        }
        
        .faq-answer p {
            padding: 0 0 20px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            text-align: left;
        }
        
        /* ============ CTA SECTION ============ */
        .cta-panel {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08) 0%, rgba(0, 82, 255, 0.1) 50%, rgba(204, 255, 0, 0.05) 100%);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--color-border-neon);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-deep);
        }
        
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(0, 240, 255, 0.06) 0%, transparent 60%);
            pointer-events: none;
            animation: ctaGlow 6s ease-in-out infinite alternate;
        }
        
        @keyframes ctaGlow {
            0% {
                transform: scale(0.9);
                opacity: 0.5;
            }
            100% {
                transform: scale(1.1);
                opacity: 1;
            }
        }
        
        .cta-panel .cta-content {
            position: relative;
            z-index: 1;
        }
        
        .cta-panel h2 {
            font-family: var(--font-display);
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.015em;
        }
        
        .cta-panel p {
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        
        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        
        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 32px;
            font-size: 15px;
            font-weight: 700;
            color: #0F0C20;
            background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-lime) 100%);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            box-shadow: var(--shadow-neon-cyan);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
        }
        
        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.5);
        }
        
        .btn-cta-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 32px;
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            background: transparent;
            border: 1px solid var(--color-border-neon);
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        
        .btn-cta-secondary:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: var(--shadow-neon-cyan);
        }
        
        /* ============ FLOATING ACTION BUTTON (FAB) ============ */
        .fab-container {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 80;
        }
        
        .fab-main {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            background: rgba(15, 12, 32, 0.65);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1.5px solid transparent;
            border-image: linear-gradient(135deg, var(--color-accent-lime) 0%, var(--color-accent-electric) 100%) 1;
            border-radius: 50px;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-smooth);
            position: relative;
            opacity: 0.6;
            animation: fabFloat 3s ease-in-out infinite;
        }
        
        @keyframes fabFloat {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }
        
        .fab-main:hover {
            opacity: 1;
            transform: scale(1.05);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.75);
            animation-play-state: paused;
        }
        
        .fab-main:active {
            transform: scale(0.96);
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.8);
            border-color: var(--color-accent-lime);
        }
        
        .fab-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-lime) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #0F0C20;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        
        .fab-main:hover .fab-icon {
            transform: rotate(360deg);
        }
        
        .fab-text {
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
        }
        
        .fab-notification {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-danger);
            animation: fabBlink 1.6s ease-in-out infinite;
            border: 2px solid rgba(15, 12, 32, 0.9);
        }
        
        @keyframes fabBlink {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.3;
                transform: scale(0.7);
            }
        }
        
        /* ============ FOOTER ============ */
        .footer-main {
            background: rgba(8, 6, 18, 0.9);
            border-top: 1px solid var(--color-border-glass);
            padding: 56px 0 28px;
            position: relative;
            z-index: 1;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        
        .footer-brand {
            font-family: var(--font-display);
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        
        .footer-brand-desc {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-text-muted);
            margin-bottom: 12px;
            max-width: 380px;
        }
        
        .footer-credit {
            font-size: 12px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        
        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        
        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
            text-align: left;
        }
        
        .footer-links a:hover {
            color: var(--color-accent-cyan);
        }
        
        .footer-links i {
            font-size: 10px;
            color: var(--color-accent-cyan);
        }
        
        .footer-bottom {
            border-top: 1px solid var(--color-border-glass);
            padding-top: 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        
        .footer-bottom p {
            font-size: 12px;
            color: var(--color-text-muted);
        }
        
        .footer-bottom .footer-badges {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .badge-18 {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, #D32F2F 0%, #B71C1C 100%);
            font-size: 12px;
            font-weight: 700;
            color: #fff;
        }
        
        .badge-secure {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            font-size: 11px;
            font-weight: 600;
            color: var(--color-success);
            background: rgba(34, 229, 132, 0.08);
            border: 1px solid rgba(34, 229, 132, 0.25);
            border-radius: 6px;
        }
        
        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 9px 12px;
                font-size: 13px;
            }
            .logo-text {
                font-size: 14px;
                max-width: 200px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .analysis-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-auth {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .header-inner {
                justify-content: space-between;
            }
            .hero-category {
                padding-top: 110px;
                padding-bottom: 56px;
            }
            .hero-search-wrapper {
                max-width: 100%;
            }
            .hero-search {
                flex-direction: column;
                border-radius: var(--radius-md);
                padding: 10px;
            }
            .hero-search input {
                width: 100%;
                text-align: left;
            }
            .hero-search button {
                width: 100%;
                justify-content: center;
            }
            .section-block {
                padding: 48px 0;
            }
            .pattern-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .cta-panel {
                padding: 40px 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .fab-container {
                left: 12px;
                bottom: 80px;
            }
            .fab-text {
                display: none;
            }
            .fab-main {
                width: 48px;
                height: 48px;
                padding: 0;
                justify-content: center;
            }
        }
        
        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 26px;
            }
            .stat-block {
                padding: 20px 14px;
            }
            .pattern-grid {
                grid-template-columns: 1fr;
            }
            .pain-points-grid {
                grid-template-columns: 1fr;
            }
            .hero-hot-tags a {
                padding: 5px 12px;
                font-size: 12px;
            }
            .logo-text {
                font-size: 13px;
                max-width: 160px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
        }

/* roulang page: category3 */
:root {
            --color-bg-primary: #08090F;
            --color-bg-secondary: #0D111E;
            --color-bg-card: rgba(13, 17, 30, 0.75);
            --color-bg-card-solid: #0D111E;
            --color-accent-blue: #0052FF;
            --color-accent-cyan: #00F0FF;
            --color-accent-green: #0DFF6E;
            --color-accent-red: #FF3B5C;
            --color-text-primary: #FFFFFF;
            --color-text-secondary: #CBD5E1;
            --color-text-muted: #64748B;
            --color-border-soft: rgba(0, 240, 255, 0.18);
            --color-border-glow: rgba(0, 240, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 24px rgba(0, 240, 255, 0.12);
            --shadow-glow-strong: 0 0 48px rgba(0, 82, 255, 0.28);
            --font-primary: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-size-base: 16px;
            --line-height-body: 1.65;
            --spacing-section: 72px;
            --spacing-section-sm: 48px;
            --container-width: 1200px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image:
                linear-gradient(rgba(0, 240, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, 0.025) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: -1;
        }

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

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

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

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

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

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

        /* ============ Header / Navigation ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.96);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .brand-logo {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 420px;
        }

        .brand-logo span {
            color: var(--color-accent-cyan);
        }

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

        .nav-links li {
            flex-shrink: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: 12px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            letter-spacing: 0.01em;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-links a.active {
            color: var(--color-accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.22);
        }

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

        .btn-login {
            padding: 10px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-primary);
            border-radius: 12px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            color: var(--color-accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        .btn-signup {
            padding: 10px 20px;
            font-size: 0.85rem;
            font-weight: 700;
            color: #FFFFFF;
            background: linear-gradient(135deg, var(--color-accent-blue), #0033CC);
            border-radius: 12px;
            white-space: nowrap;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 82, 255, 0.5);
            color: #FFFFFF;
        }

        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--color-text-primary);
            padding: 8px;
            border-radius: 10px;
            transition: background var(--transition-fast);
        }

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

        /* ============ Hero Section ============ */
        .hero-category {
            padding-top: 140px;
            padding-bottom: 72px;
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background:
                radial-gradient(ellipse at 70% 20%, rgba(0, 82, 255, 0.2) 0%, transparent 55%),
                radial-gradient(ellipse at 20% 70%, rgba(0, 240, 255, 0.12) 0%, transparent 45%),
                linear-gradient(180deg, rgba(13, 17, 30, 0.6) 0%, rgba(8, 9, 15, 0.4) 100%);
        }

        .hero-category::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
            z-index: 0;
        }

        .hero-category .container-custom {
            position: relative;
            z-index: 1;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .hero-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-accent-cyan);
            letter-spacing: 0.03em;
            margin-bottom: 16px;
        }

        .hero-category-tag i {
            font-size: 0.7rem;
        }

        .hero-category h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--color-text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .hero-category h1 span {
            color: var(--color-accent-cyan);
        }

        .hero-category-desc {
            font-size: 1.05rem;
            line-height: 1.65;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            max-width: 540px;
        }

        .hero-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-glow-strong);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .hero-image-wrap img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .hero-image-wrap:hover img {
            transform: scale(1.03);
        }

        .hero-image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 32px 24px 20px;
            background: linear-gradient(180deg, transparent 0%, rgba(8, 9, 15, 0.92) 65%);
        }

        .hero-image-overlay-text {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent-cyan);
            letter-spacing: 0.02em;
        }

        .hero-image-overlay-sub {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* Group-buy hero */
        .group-buy-panel {
            background: var(--color-bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-glow);
            margin-top: 24px;
        }

        .group-buy-status {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }

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

        .group-buy-avatars .avatar-dot {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 2px solid var(--color-bg-card-solid);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-right: -8px;
        }

        .avatar-dot:nth-child(1) { background: linear-gradient(135deg, #0052FF, #0033CC); }
        .avatar-dot:nth-child(2) { background: linear-gradient(135deg, #00F0FF, #0088AA); }
        .avatar-dot:nth-child(3) { background: linear-gradient(135deg, #0DFF6E, #008844); }
        .avatar-dot:nth-child(4) { background: linear-gradient(135deg, #FF3B5C, #AA1133); }

        .group-buy-count {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-secondary);
        }

        .group-buy-count strong {
            color: var(--color-accent-cyan);
            font-size: 1.em;
            font-weight: 700;
        }
        .group-buy-buttons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-create-group {
            padding: 14px 24px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #FFFFFF;
            background: linear-gradient(135deg, var(--color-accent-blue), #0033CC);
            border-radius: 14px;
            box-shadow: 0 8px 24px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-create-group:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 82, 255, 0.55);
            color: #FFFFFF;
        }
        .btn-join-group {
            padding: 14px 24px;
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.35);
            border-radius: 14px;
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-join-group:hover {
            background: rgba(0, 240, 255, 0.15);
            color: var(--color-accent-cyan);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 240, 255, 0.2);
        }

        /* ============ Section Shared ============ */
        .section-block {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-block-sm {
            padding: var(--spacing-section-sm) 0;
            position: relative;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--color-accent-cyan);
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--color-text-primary);
            letter-spacing: -0.02em;
            max-width: 720px;
        }
        .section-lead {
            font-size: 1.05rem;
            line-height: 1.65;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin-top: 12px;
        }
        .text-gradient {
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* Left-aligned content */
        .content-left {
            text-align: left;
        }

        /* ============ Pain Point / Solution Section ============ */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .pain-card {
            background: var(--color-bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-smooth);
        }
        .pain-card:hover {
            border-color: var(--color-border-glow);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .pain-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--color-accent-cyan);
            margin-bottom: 16px;
        }
        .pain-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 8px;
        }
        .pain-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* Solution steps */
        .steps-list {
            list-style: none;
            counter-reset: step-counter;
            display: grid;
            gap: 0;
        }
        .steps-list li {
            counter-increment: step-counter;
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
            align-items: flex-start;
        }
        .steps-list li:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-cyan));
            color: #FFFFFF;
            font-weight: 800;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 4px;
        }
        .step-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 6px;
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ============ Results / Evidence ============ */
        .results-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .result-item {
            background: rgba(13, 17, 30, 0.6);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
        }
        .result-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-accent-cyan);
            line-height: 1.2;
        }
        .result-label {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 8px;
            text-transform: uppercase;
            letter-spacing: 0.03em;
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--color-bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
        }
        .testimonial-quote {
            font-size: 0.95rem;
            line-height: 1.6;
            color: var(--color-text-secondary);
            flex-grow: 1;
            margin-bottom: 16px;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, #0052FF, #0033CC);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .testimonial-name {
            font-weight: 700;
            color: var(--color-text-primary);
            font-size: 0.9rem;
        }
        .testimonial-role {
            font-size: 0.75rem;
            color: var(--color-text-muted);
        }

        /* ============ CTA Section ============ */
        .cta-section {
            background:
                radial-gradient(ellipse at 30% 30%, rgba(0, 82, 255, 0.25) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 70%, rgba(0, 240, 255, 0.15) 0%, transparent 50%),
                linear-gradient(180deg, #0D111E, #08090F);
            padding: 72px 0;
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
        }
        .cta-card {
            background: rgba(13, 17, 30, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 48px;
            display: grid;
            grid-template-columns: 1.4fr 0.6fr;
            gap: 32px;
            align-items: center;
            box-shadow: var(--shadow-glow-strong);
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .cta-content p {
            font-size: 1rem;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            line-height: 1.65;
        }
        .btn-primary-glow {
            padding: 16px 32px;
            font-size: 1rem;
            font-weight: 700;
            color: #FFFFFF;
            background: linear-gradient(135deg, var(--color-accent-blue), #0033CC);
            border-radius: 16px;
            box-shadow: 0 12px 32px rgba(0, 82, 255, 0.45);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition-smooth);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }
        .btn-primary-glow:hover {
            transform: translateY(-3px);
            box-shadow: 0 18px 40px rgba(0, 82, 255, 0.6);
            color: #FFFFFF;
        }
        .cta-side-image {
            width: 100%;
            height: 100%;
            min-height: 260px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }
        .cta-side-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0;
        }
        .faq-item {
            background: rgba(13, 17, 30, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item.active {
            border-color: rgba(0, 240, 255, 0.25);
            box-shadow: var(--shadow-glow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text-primary);
            text-align: left;
            transition: all var(--transition-fast);
            cursor: pointer;
            background: transparent;
            border: none;
        }
        .faq-question:hover {
            color: var(--color-accent-cyan);
        }
        .faq-question i {
            flex-shrink: 0;
            color: var(--color-accent-cyan);
            transition: transform var(--transition-fast);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth);
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ============ Footer ============ */
        .footer-main {
            background: #06070A;
            padding: 64px 0 32px;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            position: relative;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .footer-brand-desc {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .footer-credit {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding-top: 12px;
        }
        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.03em;
        }
        .footer-links {
            list-style: none;
            display: grid;
            gap: 10px;
        }
        .footer-links a {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-accent-cyan);
            transform: translateX(4px);
        }
        .footer-links i {
            font-size: 0.7rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            margin: 0;
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8,9,15,0.8), rgba(8,9,15,0.8)), linear-gradient(135deg, #00F0FF, #0052FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            color: var(--color-accent-cyan);
            font-size: 1.4rem;
            opacity: 0.7;
            transition: all var(--transition-smooth);
            animation: fab-breathe 3s ease-in-out infinite;
        }
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.6);
        }
        .fab-support:active {
            transform: scale(0.95);
        }
        .fab-support .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            background: #FF3B5C;
            border-radius: 50%;
            animation: dot-blink 1.5s infinite;
        }
        @keyframes fab-breathe {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        @keyframes dot-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.2; }
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-category h1 {
                font-size: 2rem;
            }
            .results-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-card {
                grid-template-columns: 1fr;
                padding: 32px;
            }
            .cta-side-image {
                min-height: 200px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
                --spacing-section-sm: 36px;
            }
            .header-inner {
                height: 60px;
            }
            .nav-links {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.12);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-smooth);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                padding: 14px 16px;
                border-radius: 12px;
                font-size: 0.95rem;
                justify-content: flex-start;
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta .btn-login,
            .nav-cta .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .pain-grid,
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .hero-category {
                padding-top: 100px;
                padding-bottom: 48px;
            }
            .hero-image-wrap img {
                height: 220px;
            }
            .group-buy-panel {
                padding: 20px;
            }
            .cta-card {
                padding: 24px;
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
            .fab-support {
                left: 16px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-logo {
                font-size: 0.95rem;
                max-width: 220px;
            }
            .nav-cta {
                gap: 6px;
            }
            .btn-login,
            .btn-signup {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .hero-category h1 {
                font-size: 1.7rem;
            }
            .results-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .result-number {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .btn-primary-glow {
                padding: 14px 24px;
                font-size: 0.9rem;
            }
        }