/* roulang page: index */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --border-glow: rgba(0, 240, 255, 0.3);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: 'Be Vietnam Pro', 'Inter', sans-serif;
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
        }

        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Navigation */
        .nav-container {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition-smooth);
            position: relative;
            padding: 6px 0;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: var(--accent-cyan);
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-block;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.08);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            color: #0F0C20;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-block;
            border: none;
            box-shadow: 0 4px 16px rgba(0, 240, 255, 0.35);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 24px rgba(204, 255, 0, 0.5);
            transform: translateY(-1px);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--accent-cyan);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* Hero Section */
        .hero-section {
            padding: 140px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -30%;
            width: 80%;
            height: 180%;
            background: radial-gradient(ellipse, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #FFFFFF 0%, var(--accent-cyan) 50%, var(--accent-lime) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 540px;
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, var(--accent-cyan), #0099FF);
            color: #FFFFFF;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-glow:hover {
            box-shadow: 0 8px 32px rgba(204, 255, 0, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline-glow {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: var(--transition-smooth);
        }

        .btn-outline-glow:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
        }

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

        .hero-video-card {
            background: rgba(11, 26, 48, 0.7);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card), 0 0 30px rgba(0, 240, 255, 0.12);
            backdrop-filter: blur(10px);
            position: relative;
        }

        .hero-video-card img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-lg);
        }

        .hero-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent-lime);
            color: #0F0C20;
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.8rem;
            letter-spacing: 0.04em;
            box-shadow: 0 0 16px rgba(204, 255, 0, 0.5);
        }

        /* Sections General */
        .section-block {
            padding: 80px 0;
            position: relative;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 680px;
        }

        /* Selling Points Grid */
        .points-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 48px;
        }

        .point-card {
            background: rgba(11, 26, 48, 0.55);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: var(--transition-smooth);
            backdrop-filter: blur(8px);
        }

        .point-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.2);
            transform: translateY(-4px);
        }

        .point-icon {
            width: 52px;
            height: 52px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.6rem;
        }

        .point-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .point-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

        /* Scenario Showcase */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
            margin-top: 48px;
        }

        .scenario-item {
            background: rgba(15, 36, 64, 0.5);
            border-radius: var(--radius-lg);
            padding: 36px;
            border: 1px solid rgba(204, 255, 0, 0.15);
            transition: var(--transition-smooth);
        }

        .scenario-item:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 0 28px rgba(204, 255, 0, 0.15);
        }

        .scenario-item h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--accent-lime);
        }

        .scenario-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* Social Proof */
        .social-proof-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: rgba(11, 26, 48, 0.45);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(0, 240, 255, 0.18);
            backdrop-filter: blur(6px);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }

        .stat-label {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* News Section */
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 36px;
            margin-top: 48px;
        }

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

        .news-item {
            display: flex;
            gap: 18px;
            padding: 20px;
            background: rgba(11, 26, 48, 0.4);
            border-radius: var(--radius-md);
            border: 1px solid rgba(0, 240, 255, 0.15);
            transition: var(--transition-smooth);
            text-decoration: none;
            align-items: center;
        }

        .news-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
        }

        .news-item-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-item-content .news-meta {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

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

        .news-sidebar-card {
            background: rgba(11, 26, 48, 0.5);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid rgba(204, 255, 0, 0.15);
        }

        .news-sidebar-card h4 {
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--accent-lime);
        }

        .news-sidebar-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .news-sidebar-card ul li a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .news-sidebar-card ul li a:hover {
            color: var(--accent-cyan);
        }

        /* Conversion Form */
        .cta-form-section {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.06) 0%, rgba(204, 255, 0, 0.04) 100%);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            backdrop-filter: blur(10px);
        }

        .cta-form-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-form-section p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            font-size: 1rem;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }

        .form-inline {
            display: flex;
            gap: 12px;
            max-width: 520px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .form-inline input {
            flex: 1;
            min-width: 240px;
            padding: 14px 20px;
            border-radius: 50px;
            border: 1px solid rgba(0, 240, 255, 0.35);
            background: rgba(11, 26, 48, 0.6);
            color: #FFFFFF;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: var(--transition-smooth);
        }

        .form-inline input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.25);
        }

        .form-inline input::placeholder {
            color: #6B7B8D;
        }

        .form-inline button {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            color: #0F0C20;
            padding: 14px 32px;
            border-radius: 50px;
            border: none;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 18px rgba(0, 240, 255, 0.35);
            white-space: nowrap;
        }

        .form-inline button:hover {
            box-shadow: 0 6px 26px rgba(204, 255, 0, 0.55);
        }

        /* Footer */
        .site-footer {
            border-top: 1px solid rgba(0, 240, 255, 0.18);
            padding: 48px 0 32px;
            margin-top: 40px;
        }

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

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }

        .footer-desc {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .footer-col h4 {
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-primary);
            font-size: 0.95rem;
        }

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

        .footer-col ul li a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.88rem;
            transition: var(--transition-smooth);
        }

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

        .footer-bottom {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-container {
            position: fixed;
            left: 20px;
            bottom: 90px;
            z-index: 50;
        }

        .fab-button {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.7);
            backdrop-filter: blur(14px);
            border: 2px solid;
            border-image: linear-gradient(135deg, #CCFF00, #00F0FF) 1;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
            color: var(--accent-cyan);
            font-size: 1.4rem;
            text-decoration: none;
        }

        .fab-button:hover {
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.6);
            transform: scale(1.08);
        }

        .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            background: #FF0055;
            border-radius: 50%;
            border: 2px solid #0F0C20;
            animation: pulse-dot 1.5s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.35); }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .points-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .social-proof-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(15, 12, 32, 0.95);
                flex-direction: column;
                padding: 24px;
                gap: 16px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .points-grid {
                grid-template-columns: 1fr;
            }
            .social-proof-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-form-section {
                padding: 36px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .fab-container {
                left: 12px;
                bottom: 80px;
            }
            .fab-button {
                width: 46px;
                height: 46px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .hero-section {
                padding: 120px 0 50px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary-glow, .btn-outline-glow {
                text-align: center;
                justify-content: center;
            }
            .social-proof-grid {
                grid-template-columns: 1fr;
            }
            .form-inline {
                flex-direction: column;
            }
            .form-inline input {
                min-width: 100%;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --bg-glass: rgba(13, 17, 30, 0.6);
            --accent-primary: #0052FF;
            --accent-secondary: #00F0FF;
            --accent-glow: rgba(0, 240, 255, 0.5);
            --accent-glow-strong: rgba(0, 82, 255, 0.7);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 240, 255, 0.25);
            --border-light: rgba(148, 163, 184, 0.2);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(0, 240, 255, 0.15);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 240, 255, 0.2);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(0, 82, 255, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 90%, rgba(0, 240, 255, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(13, 17, 30, 0.9) 0%, transparent 70%);
            background-attachment: fixed;
        }

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

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

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

        ul {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            line-height: 1.3;
            color: var(--text-primary);
        }

        h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700; }
        h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.4rem); font-weight: 600; }

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height);
            transition: var(--transition-smooth);
        }

        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo a {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            font-family: var(--font-heading);
            transition: var(--transition-fast);
        }

        .logo a:hover {
            filter: brightness(1.2);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition-fast);
            position: relative;
        }

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

        .nav-links a.active {
            color: var(--accent-secondary);
            background: rgba(0, 240, 255, 0.12);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--accent-secondary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-glow);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.9rem;
            border: 1px solid transparent;
        }

        .btn-login:hover {
            color: var(--text-primary);
            border-color: var(--border-light);
            background: rgba(255, 255, 255, 0.04);
        }

        .btn-signup {
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            color: #08090F;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 20px var(--accent-glow-strong);
            transform: translateY(-1px);
        }

        .mobile-menu-btn {
            display: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 4px;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px;
                border-bottom: 1px solid var(--border-light);
                gap: 4px;
            }

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

            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }

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

            .header-actions {
                gap: 8px;
            }

            .btn-login, .btn-signup {
                padding: 6px 12px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 480px) {
            .header-inner {
                padding: 0 16px;
            }
            .btn-signup {
                padding: 6px 14px;
            }
        }

        /* Article Body */
        .article-wrapper {
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 80px;
        }

        .article-container {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            align-items: start;
        }

        .article-main {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-card);
        }

        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-light);
        }

        .article-header .category-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-secondary);
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 12px;
        }

        .article-header .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            color: var(--text-muted);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }

        .article-header .meta i {
            color: var(--accent-secondary);
            margin-right: 4px;
        }

        .article-featured-image {
            margin-bottom: 32px;
            border-radius: var(--radius-md);
            overflow: hidden;
            max-height: 420px;
        }

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

        .article-content {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.75;
        }

        .article-content h2 {
            margin-top: 32px;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .article-content h3 {
            margin-top: 24px;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

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

        .article-content ul, .article-content ol {
            margin: 16px 0 16px 24px;
            color: var(--text-secondary);
        }

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

        .article-content strong {
            color: var(--accent-secondary);
            font-weight: 600;
        }

        .article-content blockquote {
            border-left: 3px solid var(--accent-secondary);
            padding: 12px 20px;
            margin: 24px 0;
            background: rgba(0, 240, 255, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

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

        .article-content a:hover {
            border-bottom-color: var(--accent-secondary);
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
        }

        .article-not-found h2 {
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .article-not-found .back-home {
            display: inline-block;
            margin-top: 16px;
            padding: 10px 24px;
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            color: #08090F;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: calc(var(--header-height) + 24px);
        }

        .sidebar-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-card);
        }

        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .sidebar-card ul li:last-child {
            border-bottom: none;
        }

        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: var(--transition-fast);
        }

        .sidebar-card ul li a:hover {
            color: var(--accent-secondary);
        }

        .sidebar-card ul li a i {
            color: var(--accent-secondary);
            font-size: 0.75rem;
        }

        .cta-mini {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.1));
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .cta-mini .btn {
            display: block;
            text-align: center;
            padding: 10px;
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            color: #08090F;
            border-radius: var(--radius-sm);
            font-weight: 600;
            margin-top: 12px;
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #00F0FF;
            font-size: 1.4rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            animation: fab-breathe 2s ease-in-out infinite;
            overflow: hidden;
        }

        .fab-support::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50px;
            background: linear-gradient(135deg, #00F0FF, #0052FF, #FF007F);
            z-index: -1;
            animation: fab-border-flow 3s linear infinite;
        }

        @keyframes fab-breath {
            0%, 100% { opacity: 0.6; box-shadow: 0 0 15px rgba(0, 240, 255, 0.5); }
            50% { opacity: 1; box-shadow: 0 0 25px rgba(0, 240, 255, 0.8); }
        }

        @keyframes fab-border-flow {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.9);
        }

        .fab-support .fab-notify {
            position: absolute;
            top: 6px;
            right: 8px;
            width: 10px;
            height: 10px;
            background: #FF007F;
            border-radius: 50%;
            animation: notify-blink 1s infinite;
        }

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

        /* Responsive Article */
        @media (max-width: 1024px) {
            .article-container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                position: static;
            }
        }

        @media (max-width: 768px) {
            .article-main {
                padding: 24px;
            }
            .article-wrapper {
                padding-top: calc(var(--header-height) + 20px);
                padding-bottom: 60px;
            }
            .container-main {
                padding: 0 16px;
            }
        }

        @media (max-width: 480px) {
            .article-main {
                padding: 16px;
                border-radius: var(--radius-md);
            }
            .article-header .meta {
                font-size: 0.8rem;
                gap: 8px;
            }
        }

        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.95);
            border-top: 1px solid var(--border-light);
            padding: 48px 0 24px;
            margin-top: 40px;
        }

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

        .footer-brand {
            font-size: 1.1rem;
            font-weight: 700;
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-col h4 {
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

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

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

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.7);
            --accent-cyan: #00F0FF;
            --accent-blue: #0052FF;
            --accent-purple: #8A2BE2;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glow: rgba(0, 240, 255, 0.5);
            --glass-blur: 12px;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.2);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --font-heading: 'Segoe UI', 'Inter', 'Roboto', sans-serif;
            --font-body: 'Segoe UI', 'Inter', 'Roboto', sans-serif;
            --transition-speed: 0.3s;
        }

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

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

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

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

        .container-main {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1030;
            background: rgba(8, 9, 15, 0.8);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            transition: background var(--transition-speed) ease;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-text {
            font-family: var(--font-heading);
            font-size: 1.75rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-silver);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition-speed) ease;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            transition: width var(--transition-speed) ease;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-links a.active,
        .nav-links a:hover {
            color: var(--accent-cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.5);
            color: var(--accent-cyan);
            padding: 10px 24px;
            border-radius: 30px;
            font-weight: 600;
            transition: all var(--transition-speed) ease;
            cursor: pointer;
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
            border: none;
            color: white;
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-speed) ease;
            cursor: pointer;
        }

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

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(138, 43, 226, 0.6);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--accent-cyan);
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero-section {
            padding: 160px 0 100px;
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 80%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(0, 82, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
        }

        .hero-content h1 {
            font-family: var(--font-heading);
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 24px;
        }

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

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 36px;
            max-width: 90%;
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-bottom: 40px;
        }

        .stat-item {
            text-align: left;
        }

        .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--accent-cyan);
            display: block;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: white;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-speed) ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary-glow:hover {
            transform: scale(1.05);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.8);
            color: white;
        }

        .hero-visual {
            background: rgba(13, 17, 30, 0.6);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-glow);
        }

        .hero-visual img {
            border-radius: var(--radius-md);
            opacity: 0.9;
        }

        /* Section Styling */
        .section-padding {
            padding: 90px 0;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .section-sub {
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-bottom: 48px;
        }

        /* Glass Cards */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(var(--glass-blur));
            -webkit-backdrop-filter: blur(var(--glass-blur));
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 32px;
            transition: all var(--transition-speed) ease;
            height: 100%;
        }

        .glass-card:hover {
            border-color: rgba(0, 240, 255, 0.6);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
            transform: translateY(-5px);
        }

        .icon-circle {
            width: 60px;
            height: 60px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }

        .card-step {
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 8px;
        }

        /* Timeline / Process */
        .process-list {
            list-style: none;
            padding: 0;
        }

        .process-item {
            display: flex;
            gap: 24px;
            margin-bottom: 32px;
            background: rgba(13, 17, 30, 0.5);
            border-radius: var(--radius-sm);
            padding: 24px;
            border-left: 4px solid var(--accent-blue);
        }

        .process-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            min-width: 50px;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-sm);
            padding: 24px;
            margin-bottom: 16px;
            transition: all var(--transition-speed) ease;
        }

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

        .faq-question {
            font-weight: 700;
            color: var(--text-white);
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        /* CTA Block */
        .cta-dark {
            background: linear-gradient(135deg, #0D111E, #08090F);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 60px;
            text-align: center;
        }

        /* Footer */
        .site-footer {
            background: #05060A;
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 60px 0 30px;
        }

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

        .footer-brand {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .footer-col h4 {
            color: var(--text-white);
            margin-bottom: 16px;
            font-size: 1.1rem;
        }

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

        .footer-col li {
            margin-bottom: 10px;
            color: var(--text-muted);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

            .hero-content h1 {
                font-size: 2.5rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.95);
                flex-direction: column;
                padding: 20px;
                gap: 20px;
                backdrop-filter: blur(20px);
            }

            .nav-links.active {
                display: flex;
            }

            .mobile-toggle {
                display: block;
            }

            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                display: inline-block;
            }

            .hero-content h1 {
                font-size: 2rem;
            }

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

/* roulang page: category2 */
:root {
            --deep-blue: #08090F;
            --cyber-navy: #0D111E;
            --electric-blue: #0052FF;
            --neon-cyan: #00F0FF;
            --white: #FFFFFF;
            --cool-silver: #CBD5E1;
            --dark-card-bg: rgba(13, 17, 30, 0.7);
            --glass-border: rgba(255, 255, 255, 0.1);
            --glow-blue: 0 0 15px rgba(0, 82, 255, 0.5);
            --glow-cyan: 0 0 15px rgba(0, 240, 255, 0.5);
            --glow-strong: 0 0 25px rgba(0, 240, 255, 0.7);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Segoe UI', 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--deep-blue);
            color: var(--white);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        /* Background Pattern */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(ellipse at 20% 50%, rgba(0, 82, 255, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 82, 255, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        /* Container */
        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--glass-border);
            padding: 16px 0;
            transition: all var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--white);
            text-decoration: none;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: all var(--transition-fast);
        }

        .logo:hover {
            filter: brightness(1.2);
            transform: scale(1.02);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--cool-silver);
            text-decoration: none;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--white);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.15);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--neon-cyan);
            border-radius: 2px;
            transition: width var(--transition-fast);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 24px;
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            color: var(--cool-silver);
            background: transparent;
            border: none;
            font-weight: 600;
            padding: 8px 16px;
            cursor: pointer;
            transition: all var(--transition-fast);
            font-size: 0.9rem;
            text-decoration: none;
        }

        .btn-login:hover {
            color: var(--white);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--electric-blue), var(--neon-cyan));
            color: var(--white);
            border: none;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: var(--glow-blue);
            font-size: 0.9rem;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-signup:hover {
            box-shadow: var(--glow-strong);
            transform: translateY(-2px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
        }

        /* Hero Section */
        .hero-section {
            padding: 160px 0 100px;
            position: relative;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.05) 0%, transparent 100%);
            border-bottom: 1px solid var(--glass-border);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            color: var(--neon-cyan);
            padding: 6px 16px;
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(0, 240, 255, 0.25);
        }

        .hero-title {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, var(--white) 0%, var(--neon-cyan) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--cool-silver);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 540px;
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-bottom: 36px;
        }

        .stat-item {
            text-align: left;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--neon-cyan);
            line-height: 1;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--cool-silver);
            margin-top: 4px;
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, var(--electric-blue), var(--neon-cyan));
            color: var(--white);
            border: none;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: var(--glow-blue);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .btn-outline-glow {
            background: transparent;
            color: var(--white);
            border: 2px solid rgba(0, 240, 255, 0.4);
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-glow:hover {
            border-color: var(--neon-cyan);
            box-shadow: var(--glow-cyan);
            color: var(--white);
        }

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

        .hero-visual img {
            width: 100%;
            max-width: 480px;
            border-radius: var(--radius-lg);
            box-shadow: 0 20px 60px rgba(0, 240, 255, 0.2);
            border: 2px solid rgba(0, 240, 255, 0.2);
        }

        /* Feature Cards Section */
        .features-section {
            padding: 100px 0;
        }

        .section-label {
            color: var(--neon-cyan);
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-desc {
            color: var(--cool-silver);
            font-size: 1.05rem;
            margin-bottom: 50px;
            max-width: 680px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--dark-card-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--electric-blue), var(--neon-cyan));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-smooth);
        }

        .feature-card:hover {
            transform: translateY(-8px);
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: var(--glow-cyan);
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--neon-cyan);
            margin-bottom: 20px;
            transition: all var(--transition-smooth);
        }

        .feature-card:hover .feature-icon {
            background: rgba(0, 240, 255, 0.2);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
        }

        .feature-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--white);
        }

        .feature-card p {
            color: var(--cool-silver);
            font-size: 0.95rem;
            line-height: 1.6;
            margin: 0;
        }

        .feature-tag {
            display: inline-block;
            background: rgba(0, 82, 255, 0.2);
            color: var(--electric-blue);
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 16px;
        }

        /* Comparison Table Section */
        .comparison-section {
            padding: 80px 0;
            background: rgba(13, 17, 30, 0.4);
            border-top: 1px solid var(--glass-border);
            border-bottom: 1px solid var(--glass-border);
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            margin-top: 40px;
            border-radius: var(--radius-md);
            border: 1px solid var(--glass-border);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }

        .comparison-table th {
            background: rgba(0, 82, 255, 0.15);
            color: var(--neon-cyan);
            padding: 16px 20px;
            text-align: left;
            font-weight: 700;
            border-bottom: 2px solid rgba(0, 240, 255, 0.3);
            font-size: 0.95rem;
        }

        .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--glass-border);
            color: var(--cool-silver);
            font-size: 0.9rem;
            background: var(--dark-card-bg);
        }

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

        .comparison-table .highlight-row {
            background: rgba(0, 240, 255, 0.05);
        }

        .comparison-table .highlight-row td {
            background: rgba(0, 240, 255, 0.05);
            color: var(--white);
            font-weight: 600;
        }

        .badge-recommend {
            background: linear-gradient(135deg, var(--electric-blue), var(--neon-cyan));
            color: var(--white);
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 700;
            margin-left: 8px;
            display: inline-block;
        }

        /* How to Use Section */
        .howto-section {
            padding: 100px 0;
        }

        .steps-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 50px;
        }

        .step-card {
            text-align: left;
            padding: 32px 24px;
            background: var(--dark-card-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            transition: all var(--transition-smooth);
            position: relative;
        }

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

        .step-number {
            font-size: 3rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--electric-blue), var(--neon-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
            margin-bottom: 8px;
        }

        .step-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--white);
        }

        .step-card p {
            color: var(--cool-silver);
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 0;
        }

        /* FAQ Section */
        .faq-section {
            padding: 80px 0;
            background: rgba(13, 17, 30, 0.3);
            border-top: 1px solid var(--glass-border);
            border-bottom: 1px solid var(--glass-border);
        }

        .accordion-custom .accordion-item {
            background: transparent;
            border: 1px solid var(--glass-border);
            margin-bottom: 12px;
            border-radius: var(--radius-sm) !important;
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background: var(--dark-card-bg);
            color: var(--white);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 20px 24px;
            box-shadow: none;
            border: none;
            transition: all var(--transition-fast);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.08);
            color: var(--neon-cyan);
            box-shadow: none;
        }

        .accordion-custom .accordion-button::after {
            filter: invert(1) brightness(2);
        }

        .accordion-custom .accordion-body {
            background: var(--dark-card-bg);
            color: var(--cool-silver);
            padding: 16px 24px 24px;
            line-height: 1.7;
        }

        /* CTA Banner */
        .cta-banner {
            padding: 80px 0;
            text-align: left;
        }

        .cta-inner {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.15));
            border: 2px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }

        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-content p {
            color: var(--cool-silver);
            font-size: 1.05rem;
            max-width: 500px;
            margin: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--cyber-navy);
            border-top: 1px solid var(--glass-border);
            padding: 60px 0 30px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }

        .footer-desc {
            color: var(--cool-silver);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
        }

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

        .footer-col li {
            margin-bottom: 10px;
        }

        .footer-col a {
            color: var(--cool-silver);
            text-decoration: none;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--neon-cyan);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--glass-border);
            color: var(--cool-silver);
            font-size: 0.85rem;
            flex-wrap: wrap;
            gap: 12px;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 999;
            width: 56px;
            height: 56px;
            background: rgba(13, 17, 30, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: var(--glow-cyan);
            opacity: 0.65;
            animation: fabGlow 2s ease-in-out infinite;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, var(--electric-blue), var(--neon-cyan));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: var(--glow-strong);
        }

        .fab-left i {
            color: var(--neon-cyan);
            font-size: 1.4rem;
            z-index: 1;
        }

        @keyframes fabGlow {
            0%, 100% { box-shadow: 0 0 15px rgba(0, 240, 255, 0.4); }
            50% { box-shadow: 0 0 28px rgba(0, 240, 255, 0.7); }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-title {
                font-size: 2.5rem;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .steps-flow {
                grid-template-columns: 1fr;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary-glow,
            .btn-outline-glow {
                width: 100%;
                justify-content: center;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.95);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px;
                gap: 4px;
                border-bottom: 1px solid var(--glass-border);
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth {
                gap: 6px;
            }
            .btn-login {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .cta-inner {
                flex-direction: column;
                text-align: center;
                padding: 40px 24px;
            }
            .cta-content p {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .comparison-table-wrapper {
                margin-left: -24px;
                margin-right: -24px;
                border-radius: 0;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-section {
                padding: 130px 0 60px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .feature-card {
                padding: 24px 20px;
            }
        }