/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(255, 255, 255, 0.05);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 240, 255, 0.2);
            --glow-blue: 0 0 15px rgba(0, 82, 255, 0.5);
            --glow-cyan: 0 0 15px rgba(0, 240, 255, 0.5);
            --radius-sm: 8px;
            --radius: 16px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', monospace;
        }

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

        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;
        }

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

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

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

        .container {
            width: min(100% - 2rem, 1200px);
            margin-inline: auto;
            padding: 0 1rem;
        }

        /* 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(--border-color);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

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

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 8px;
            display: grid;
            place-items: center;
            font-size: 1rem;
            color: white;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            list-style: none;
        }

        .nav-menu li a {
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-silver);
            padding: 0.5rem 0.25rem;
            position: relative;
            white-space: nowrap;
        }

        .nav-menu li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: var(--transition);
        }

        .nav-menu li a:hover,
        .nav-menu li a.active {
            color: var(--text-white);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.65rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.875rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            outline: none;
        }

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

        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.4);
        }

        .btn-solid {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: white;
            box-shadow: var(--glow-blue);
        }

        .btn-solid:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(0, 82, 255, 0.6), 0 0 20px rgba(0, 240, 255, 0.4);
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: white;
            box-shadow: var(--glow-cyan);
        }

        .btn-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(0, 240, 255, 0.7);
        }

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

        /* Hero Section */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8,9,15,0.9) 0%, rgba(8,9,15,0.75) 100%);
            z-index: 1;
        }

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

        .hero-content {
            display: flex;
            align-items: flex-start;
            gap: 3rem;
            flex-wrap: wrap;
        }

        .hero-avatar-wrapper {
            flex-shrink: 0;
        }

        .hero-avatar {
            width: 140px;
            height: 140px;
            border-radius: 50%;
            overflow: hidden;
            border: 3px solid var(--accent-cyan);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
            background: var(--bg-secondary);
        }

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

        .hero-text {
            flex: 1;
            min-width: 280px;
        }

        .hero-badge {
            display: inline-block;
            padding: 0.35rem 1rem;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 0.05em;
            margin-bottom: 1rem;
        }

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 1.25rem;
            letter-spacing: -0.02em;
        }

        .hero-description {
            font-size: 1.1rem;
            color: var(--text-silver);
            max-width: 650px;
            margin-bottom: 1.75rem;
        }

        .hero-stats {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
            margin-bottom: 1.75rem;
        }

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

        .hero-stat-number {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .hero-cta {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* Sections */
        .section {
            padding: 80px 0;
        }

        .section-header {
            margin-bottom: 3rem;
        }

        .section-title {
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-silver);
            max-width: 700px;
        }

        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-color), transparent);
            margin: 2rem 0;
        }

        /* Showcase */
        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.5rem;
        }

        .showcase-item {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }

        .showcase-item:hover {
            transform: translateY(-8px);
            border-color: rgba(0,240,255,0.3);
            box-shadow: 0 15px 40px rgba(0,0,0,0.4), 0 0 20px rgba(0,240,255,0.2);
        }

        .showcase-item img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }

        .showcase-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(8,9,15,0.9));
            display: flex;
            align-items: flex-end;
            padding: 1.25rem;
            opacity: 0;
            transition: var(--transition);
        }

        .showcase-item:hover .showcase-overlay {
            opacity: 1;
        }

        .showcase-label {
            font-weight: 600;
            font-size: 0.9rem;
            color: white;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2rem;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius);
            padding: 2rem;
            position: relative;
            transition: var(--transition);
        }

        .step-card:hover {
            border-color: rgba(0,240,255,0.3);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }

        .step-number {
            font-size: 3rem;
            font-weight: 800;
            color: rgba(0,240,255,0.2);
            line-height: 1;
            margin-bottom: 1rem;
        }

        .step-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }

        .step-description {
            color: var(--text-silver);
            font-size: 0.95rem;
        }

        /* Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .review-card {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius);
            padding: 1.5rem;
            transition: var(--transition);
        }

        .review-card:hover {
            border-color: rgba(0,240,255,0.3);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1rem;
        }

        .review-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            overflow: hidden;
            border: 2px solid var(--accent-cyan);
        }

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

        .review-name {
            font-weight: 600;
            font-size: 1rem;
        }

        .review-stars {
            color: #FFD700;
            font-size: 0.85rem;
            margin-top: 0.25rem;
        }

        .review-text {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* CMS News List */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: start;
        }

        .news-main {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .news-item {
            border-bottom: 1px solid rgba(255,255,255,0.08);
            padding-bottom: 1rem;
            transition: var(--transition);
        }

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

        .news-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
        }

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

        .news-meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            gap: 1rem;
        }

        .news-summary {
            color: var(--text-silver);
            font-size: 0.9rem;
            margin-top: 0.5rem;
        }

        .news-sidebar {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius);
            padding: 1.5rem;
        }

        .news-sidebar-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
        }

        .news-sidebar-item {
            display: block;
            padding: 0.75rem 0;
            color: var(--text-silver);
            font-size: 0.9rem;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            transition: var(--transition);
        }

        .news-sidebar-item:hover {
            color: var(--accent-cyan);
            transform: translateX(4px);
        }

        /* Download/CTA */
        .download-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .download-content {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .download-icon {
            font-size: 3rem;
            color: var(--accent-cyan);
            margin-bottom: 1.5rem;
        }

        .download-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 2rem;
        }

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

        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-sm);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            padding: 1.25rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

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

        .faq-answer {
            padding: 0 1.5rem 1.25rem;
            color: var(--text-silver);
            display: none;
            line-height: 1.7;
        }

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

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

        /* Footer */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-color);
            padding: 4rem 0 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }

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

        .footer-logo {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .footer-description {
            color: var(--text-muted);
            max-width: 400px;
            font-size: 0.9rem;
        }

        .footer-column h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.6rem;
        }

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

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

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.05);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* Floating Action Button */
        .fab {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.6);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8,9,15,0.6), rgba(8,9,15,0.6)), linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            background-origin: border-box;
            background-clip: content-box, border-box;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.7;
            animation: fab-breathe 3s infinite;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            animation-play-state: paused;
        }

        @keyframes fab-breathe {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-menu {
                gap: 1rem;
            }
            .hero-content {
                gap: 2rem;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 2rem;
                gap: 1.5rem;
                transform: translateY(-120%);
                transition: var(--transition);
                border-bottom: 1px solid var(--border-color);
            }
            .nav-menu.open {
                transform: translateY(0);
            }
            .mobile-toggle {
                display: block;
            }
            .hero {
                padding-top: 120px;
                padding-bottom: 60px;
            }
            .hero-avatar {
                width: 100px;
                height: 100px;
            }
            .section {
                padding: 60px 0;
            }
            .section-header {
                margin-bottom: 2rem;
            }
            .download-buttons {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .hero-content {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-avatar-wrapper {
                margin-bottom: 1rem;
            }
            .hero-cta {
                flex-direction: column;
                width: 100%;
            }
            .btn {
                width: 100%;
            }
            .showcase-grid,
            .steps-grid,
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .container {
                padding: 0 0.75rem;
            }
            .fab {
                left: 1rem;
                bottom: 5rem;
                width: 48px;
                height: 48px;
                font-size: 1.25rem;
            }
        }

/* roulang page: article */
:root {
            --bg: #08090F;
            --surface: #0D111E;
            --surface-2: rgba(13, 17, 30, 0.82);
            --surface-3: #161D31;
            --primary: #0052FF;
            --primary-hover: #3D7BFF;
            --accent-cyan: #00F0FF;
            --text: #FFFFFF;
            --muted: #CBD5E1;
            --soft: #99A7BB;
            --border: rgba(0, 240, 255, 0.18);
            --border-blue: rgba(0, 82, 255, 0.55);
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 18px 50px rgba(0, 82, 255, 0.2);
            --shadow-glow: 0 0 24px rgba(0, 240, 255, 0.28);
            --transition: 0.25s cubic-bezier(0.2, 0.7, 0.3, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Be Vietnam Pro', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 1rem;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            width: min(1180px, 92%);
            margin: 0 auto;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            gap: 2rem;
            min-height: 76px;
        }
        .brand {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            white-space: nowrap;
            background: linear-gradient(135deg, #fff 0%, var(--accent-cyan) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.75rem;
            list-style: none;
            margin-left: auto;
        }
        .nav-menu a {
            font-weight: 500;
            color: var(--muted);
            position: relative;
            padding: 0.5rem 0;
            font-size: 0.95rem;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--text);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent-cyan));
            border-radius: 2px;
        }
        .auth-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-left: 0.5rem;
        }
        .btn-text {
            font-weight: 600;
            color: var(--muted);
            padding: 0.55rem 0.9rem;
            border-radius: 10px;
            transition: all var(--transition);
        }
        .btn-text:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            padding: 0.65rem 1.25rem;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.14);
            box-shadow: 0 8px 22px rgba(0, 82, 255, 0.35);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 10px 28px rgba(0, 82, 255, 0.5);
            transform: translateY(-2px);
        }
        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            color: var(--muted);
            width: 44px;
            height: 44px;
            border-radius: 10px;
            font-size: 1.25rem;
            cursor: pointer;
            transition: all var(--transition);
        }
        .nav-toggle:hover {
            color: #fff;
            border-color: var(--accent-cyan);
        }

        /* Article banner */
        .article-banner {
            padding: 72px 0 56px;
            background-image: linear-gradient(180deg, rgba(8, 9, 15, 0.78), rgba(13, 17, 30, 0.94)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.6rem;
            color: var(--soft);
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: var(--muted);
        }
        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .article-hero h1 {
            font-size: clamp(2rem, 5vw, 3.4rem);
            line-height: 1.14;
            letter-spacing: -0.03em;
            font-weight: 800;
            max-width: 900px;
            text-wrap: balance;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem 2rem;
            margin-top: 1.5rem;
            color: var(--muted);
            font-size: 0.95rem;
        }
        .article-meta i {
            color: var(--accent-cyan);
            margin-right: 0.4rem;
        }
        .badge-category {
            display: inline-block;
            background: rgba(0, 240, 255, 0.09);
            border: 1px solid var(--border);
            color: var(--accent-cyan);
            font-weight: 600;
            padding: 0.35rem 0.85rem;
            border-radius: 999px;
            font-size: 0.85rem;
        }

        /* Article layout */
        .article-section {
            padding: 64px 0 80px;
            background: radial-gradient(circle at 20% 0%, rgba(0, 82, 255, 0.08), transparent 42%), var(--bg);
        }
        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 40px;
            align-items: start;
        }
        .article-main {
            min-width: 0;
        }
        .article-cover-img {
            width: 100%;
            border-radius: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .article-body {
            background: var(--surface-2);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: clamp(24px, 4vw, 44px);
            color: #D9E2F0;
            box-shadow: var(--shadow);
        }
        .article-body h2,
        .article-body h3 {
            color: #fff;
            margin-top: 2rem;
            margin-bottom: 0.9rem;
            letter-spacing: -0.01em;
        }
        .article-body h2 {
            font-size: 1.8rem;
        }
        .article-body h3 {
            font-size: 1.35rem;
        }
        .article-body p {
            margin-bottom: 1.25rem;
            color: var(--muted);
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.5rem 1.5rem;
            color: var(--muted);
        }
        .article-body li {
            margin-bottom: 0.55rem;
        }
        .article-body li::marker {
            color: var(--accent-cyan);
        }
        .article-body img {
            border-radius: 14px;
            margin: 1.5rem 0;
            border: 1px solid var(--border);
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
            padding: 1.2rem 1.5rem;
            border-radius: 0 14px 14px 0;
            margin: 2rem 0;
            font-style: italic;
            color: #E6F3FF;
        }
        .no-article {
            text-align: center;
            padding: 4rem 2rem;
        }
        .no-article p {
            font-size: 1.3rem;
            color: var(--muted);
            margin-bottom: 1.5rem;
        }

        /* Sidebar */
        .sidebar-card {
            position: sticky;
            top: 100px;
            background: var(--surface-2);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-bottom: 1.25rem;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .sidebar-card h3 i {
            color: var(--accent-cyan);
        }
        .sidebar-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .sidebar-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            color: var(--muted);
            font-size: 0.95rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding-bottom: 0.9rem;
        }
        .sidebar-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .sidebar-list i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
            margin-top: 0.15rem;
            flex-shrink: 0;
        }
        .trust-mini {
            margin-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .trust-mini span {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--soft);
            padding: 0.35rem 0.75rem;
            border-radius: 999px;
            font-size: 0.8rem;
        }

        /* FAQ */
        .faq-section {
            padding: 72px 0;
            background: #0B0E17;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .faq-heading {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            letter-spacing: -0.02em;
            margin-bottom: 2.5rem;
            max-width: 700px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 860px;
        }
        details {
            background: var(--surface-2);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0;
            transition: all var(--transition);
        }
        details:hover {
            border-color: var(--border-blue);
            box-shadow: 0 0 0 1px rgba(0, 82, 255, 0.1);
        }
        summary {
            cursor: pointer;
            padding: 1.25rem 1.5rem;
            font-weight: 600;
            color: #fff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            list-style: none;
        }
        summary::-webkit-details-marker {
            display: none;
        }
        summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent-cyan);
            transition: transform var(--transition);
        }
        details[open] summary::after {
            transform: rotate(180deg);
        }
        details p {
            padding: 0 1.5rem 1.25rem;
            color: var(--muted);
        }

        /* CTA */
        .cta-section {
            padding: 80px 0;
            background-image: linear-gradient(135deg, rgba(0, 82, 255, 0.16), rgba(0, 240, 255, 0.1));
        }
        .cta-panel {
            background: rgba(13, 17, 30, 0.78);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border: 1px solid var(--border);
            border-radius: 26px;
            padding: clamp(32px, 6vw, 64px);
            box-shadow: var(--shadow);
            text-align: left;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
        }
        .cta-panel h2 {
            font-size: clamp(1.6rem, 4vw, 2.4rem);
            letter-spacing: -0.02em;
            max-width: 650px;
            margin-bottom: 0.75rem;
        }
        .cta-panel p {
            color: var(--muted);
            max-width: 620px;
            margin-bottom: 1.5rem;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 700;
            padding: 0.7rem 1.4rem;
            border-radius: 12px;
            transition: all var(--transition);
        }
        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.25);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: #06070B;
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
        }
        .footer-logo {
            font-weight: 800;
            font-size: 1.3rem;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #fff 0%, var(--accent-cyan) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .footer-description {
            color: var(--soft);
            font-size: 0.95rem;
            max-width: 360px;
        }
        .footer-column h4 {
            font-size: 1rem;
            color: #fff;
            margin-bottom: 1.1rem;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }
        .footer-links a,
        .footer-links li {
            color: var(--muted);
            font-size: 0.92rem;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding: 1.5rem 0 2rem;
            text-align: center;
            color: var(--soft);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-pulse {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 60px;
            height: 60px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(8, 9, 15, 0.72);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.72), rgba(8, 9, 15, 0.72)), linear-gradient(135deg, var(--primary), var(--accent-cyan));
            background-origin: border-box;
            background-clip: content-box, border-box;
            color: var(--accent-cyan);
            font-size: 1.6rem;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
            transition: all var(--transition);
        }
        .fab-pulse::after {
            content: '';
            position: absolute;
            top: -4px;
            right: -4px;
            width: 12px;
            height: 12px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #08090F;
            animation: fab-blink 1.8s ease-in-out infinite;
        }
        .fab-pulse:hover {
            transform: scale(1.08);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
        }
        .fab-pulse:active {
            transform: scale(0.96);
        }
        @keyframes fab-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.45; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-menu {
                position: fixed;
                top: 76px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(24px);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 1rem 4%;
                border-bottom: 1px solid var(--border);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.35s ease, padding 0.25s ease;
            }
            .nav-menu.open {
                max-height: 420px;
                padding: 1.5rem 4%;
            }
            .nav-menu li {
                width: 100%;
            }
            .nav-menu a {
                display: block;
                padding: 0.85rem 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .auth-actions {
                margin-left: auto;
            }
            .article-layout {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .sidebar-card {
                position: static;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .brand {
                font-size: 1rem;
            }
            .article-banner {
                padding: 48px 0 40px;
            }
            .article-body {
                padding: 22px;
            }
            .cta-panel {
                padding: 28px 22px;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                gap: 1rem;
            }
            .auth-actions .btn-text {
                display: none;
            }
            .btn-primary {
                padding: 0.55rem 1rem;
                font-size: 0.9rem;
            }
            .article-meta {
                gap: 0.75rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #08090F;
            --bg-navy: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.88);
            --bg-card-hover: rgba(18, 26, 45, 0.95);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-blue-soft: rgba(0, 82, 255, 0.18);
            --accent-cyan-soft: rgba(0, 240, 255, 0.12);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8B95A9;
            --border-blue: rgba(0, 82, 255, 0.35);
            --border-cyan: rgba(0, 240, 255, 0.28);
            --shadow-glow-blue: 0 0 18px rgba(0, 82, 255, 0.35);
            --shadow-glow-cyan: 0 0 16px rgba(0, 240, 255, 0.32);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --font-sans: 'Be Vietnam Pro', 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --spacing-xs: 0.5rem;
            --spacing-sm: 0.75rem;
            --spacing-md: 1.25rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
            --spacing-xxl: 4.5rem;
            --transition-fast: 0.22s ease;
            --transition-med: 0.35s ease;
            --transition-slow: 0.5s ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deep);
            color: var(--text-silver);
            line-height: 1.6;
            font-size: 1rem;
            letter-spacing: 0.01em;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

        a:hover,
        a:focus {
            color: var(--accent-blue);
            text-decoration: none;
        }

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

        .container-fluid {
            max-width: 1280px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        .container {
            max-width: 1160px;
        }

        /* ===== HEADER & NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-blue);
            padding: 0.7rem 0;
            transition: background var(--transition-med), box-shadow var(--transition-med);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.98);
            box-shadow: 0 4px 22px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: nowrap;
        }

        .navbar-brand {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 0.15rem;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.01em;
            line-height: 1.2;
            white-space: nowrap;
        }

        .navbar-brand .brand-main {
            font-size: 1.2rem;
            background: linear-gradient(135deg, var(--text-white) 40%, var(--accent-cyan) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: var(--text-white);
        }

        .navbar-brand .brand-sub {
            font-size: 0.72rem;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.04em;
        }

        .navbar {
            padding: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-menu ul {
            display: flex;
            align-items: center;
            gap: 0.15rem;
            margin: 0;
            padding: 0;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-menu li {
            margin: 0;
            padding: 0;
        }

        .nav-menu .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.55rem 1.1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-silver);
            letter-spacing: 0.01em;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .nav-menu .nav-link:hover,
        .nav-menu .nav-link:focus {
            color: var(--text-white);
            background: var(--accent-blue-soft);
            border-color: var(--border-cyan);
        }

        .nav-menu .nav-link.active {
            color: var(--accent-cyan);
            background: var(--accent-cyan-soft);
            border-color: var(--border-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.18);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            flex-shrink: 0;
        }

        .btn-login {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.5rem 1.25rem;
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-silver);
            background: transparent;
            border: 1px solid var(--border-blue);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-login:hover,
        .btn-login:focus {
            color: var(--text-white);
            border-color: var(--accent-cyan);
            background: var(--accent-blue-soft);
        }

        .btn-signup {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.5rem 1.35rem;
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
            background: var(--accent-blue);
            border: 1px solid var(--accent-blue);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            box-shadow: 0 0 14px rgba(0, 82, 255, 0.45);
            white-space: nowrap;
        }

        .btn-signup:hover,
        .btn-signup:focus {
            background: var(--accent-cyan);
            border-color: var(--accent-cyan);
            color: var(--bg-deep);
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.55);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid var(--border-blue);
            background: rgba(255, 255, 255, 0.04);
            padding: 0.45rem 0.7rem;
            border-radius: 8px;
            display: none;
            transition: all var(--transition-fast);
        }

        .navbar-toggler:hover {
            background: var(--accent-blue-soft);
            border-color: var(--accent-cyan);
        }

        .navbar-toggler-icon {
            filter: invert(1);
        }

        /* ===== BUTTONS GENERAL ===== */
        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue) 0%, #0066ff 100%);
            border: 1px solid var(--accent-blue);
            cursor: pointer;
            transition: all var(--transition-med);
            text-decoration: none;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.4);
            letter-spacing: 0.01em;
        }

        .btn-primary-glow:hover,
        .btn-primary-glow:focus {
            background: linear-gradient(135deg, #0066ff 0%, var(--accent-cyan) 100%);
            border-color: var(--accent-cyan);
            color: #fff;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline-glow {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.8rem 1.8rem;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--accent-cyan);
            background: transparent;
            border: 1px solid var(--border-cyan);
            cursor: pointer;
            transition: all var(--transition-med);
            text-decoration: none;
        }

        .btn-outline-glow:hover,
        .btn-outline-glow:focus {
            background: var(--accent-cyan-soft);
            border-color: var(--accent-cyan);
            color: var(--text-white);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
            transform: translateY(-2px);
        }

        /* ===== HERO ===== */
        .category-hero {
            position: relative;
            padding: 8.5rem 0 4rem;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.94) 0%, rgba(13, 17, 30, 0.88) 55%, var(--bg-deep) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-attachment: fixed;
            border-bottom: 1px solid var(--border-blue);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 620px;
            height: 620px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.2) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

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

        .hero-badge-verified {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            padding: 0.45rem 1.2rem;
            border-radius: 30px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-cyan);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.25rem;
            letter-spacing: 0.02em;
        }

        .hero-badge-verified i {
            font-size: 0.9rem;
            animation: pulse-soft 2.2s ease-in-out infinite;
        }

        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: -0.015em;
            margin-bottom: 1.1rem;
            max-width: 700px;
        }

        .category-hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: var(--accent-cyan);
            font-weight: 800;
        }

        .hero-subtitle {
            font-size: 1.12rem;
            color: var(--text-silver);
            line-height: 1.65;
            max-width: 620px;
            margin-bottom: 1.8rem;
        }

        .hero-cta-group {
            display: flex;
            gap: 0.9rem;
            flex-wrap: wrap;
            margin-bottom: 2.2rem;
        }

        .hero-meta-stats {
            display: flex;
            gap: 1.8rem;
            flex-wrap: wrap;
            margin-top: 1rem;
        }

        .hero-meta-stats .stat-item {
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
        }

        .hero-meta-stats .stat-value {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.01em;
        }

        .hero-meta-stats .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            font-weight: 500;
        }

        .hero-visual-card {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-blue);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card), var(--shadow-glow-blue);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-med);
        }

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

        .hero-visual-card img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-blue);
        }

        .hero-visual-overlay {
            padding: 1.5rem 1.75rem;
        }

        .hero-visual-overlay h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.55rem;
        }

        .hero-visual-overlay p {
            font-size: 0.94rem;
            color: var(--text-silver);
            margin-bottom: 0;
            line-height: 1.55;
        }

        /* ===== SECTION GENERAL ===== */
        .section-block {
            padding: 4.5rem 0;
            position: relative;
        }

        .section-block-alt {
            background: var(--bg-navy);
            border-top: 1px solid rgba(0, 82, 255, 0.15);
            border-bottom: 1px solid rgba(0, 82, 255, 0.15);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.07em;
            margin-bottom: 0.9rem;
        }

        .section-label i {
            font-size: 0.85rem;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 1.1rem;
            max-width: 720px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 620px;
            margin-bottom: 2.2rem;
        }

        .section-desc.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .text-center-mobile {
            text-align: left;
        }

        /* ===== PAIN POINT / STORY ===== */
        .pain-panel {
            display: flex;
            align-items: stretch;
            gap: 2.5rem;
            background: var(--bg-card);
            border: 1px solid var(--border-blue);
            border-radius: var(--radius-lg);
            padding: 2.8rem 2.5rem;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow-card);
            margin-bottom: 2rem;
            transition: all var(--transition-med);
        }

        .pain-panel:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
        }

        .pain-icon {
            flex-shrink: 0;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(255, 69, 0, 0.15);
            border: 1px solid rgba(255, 69, 0, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #FF6A3D;
            box-shadow: 0 0 14px rgba(255, 69, 0, 0.2);
        }

        .pain-content h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.7rem;
        }

        .pain-content p {
            font-size: 0.98rem;
            color: var(--text-silver);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .solution-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-cyan);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 0.8rem;
        }

        /* ===== CRITERIA CARDS ===== */
        .criteria-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 0.5rem;
        }

        .criteria-card {
            background: var(--bg-card);
            border: 1px solid var(--border-blue);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.6rem;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
        }

        .criteria-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            opacity: 0;
            transition: opacity var(--transition-fast);
        }

        .criteria-card:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-card), var(--shadow-glow-blue);
            transform: translateY(-5px);
        }

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

        .criteria-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: var(--accent-blue-soft);
            border: 1px solid var(--border-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            color: var(--accent-cyan);
            margin-bottom: 1.2rem;
            transition: all var(--transition-fast);
        }

        .criteria-card:hover .criteria-icon {
            background: var(--accent-cyan-soft);
            border-color: var(--border-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
        }

        .criteria-card h4 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.55rem;
        }

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

        /* ===== TOP PLATFORMS ===== */
        .platform-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.6rem;
            margin-top: 0.5rem;
        }

        .platform-item {
            display: flex;
            align-items: flex-start;
            gap: 1.4rem;
            background: var(--bg-card);
            border: 1px solid var(--border-blue);
            border-radius: var(--radius-md);
            padding: 1.7rem 1.6rem;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-med);
            cursor: pointer;
        }

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

        .platform-rank {
            flex-shrink: 0;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            box-shadow: 0 0 14px rgba(0, 82, 255, 0.35);
        }

        .platform-rank.rank-1 {
            background: linear-gradient(135deg, #FFD700 0%, #FF9F00 100%);
            box-shadow: 0 0 18px rgba(255, 215, 0, 0.4);
        }

        .platform-rank.rank-2 {
            background: linear-gradient(135deg, #C0C0C0 0%, #A0A0A0 100%);
            box-shadow: 0 0 16px rgba(192, 192, 192, 0.3);
        }

        .platform-rank.rank-3 {
            background: linear-gradient(135deg, #CD7F32 0%, #B06920 100%);
            box-shadow: 0 0 15px rgba(205, 127, 50, 0.3);
        }

        .platform-info h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.4rem;
            display: flex;
            align-items: center;
            gap: 0.55rem;
        }

        .platform-info .badge-verified {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.2rem 0.6rem;
            border-radius: 14px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-cyan);
            color: var(--accent-cyan);
            font-size: 0.72rem;
            font-weight: 600;
            vertical-align: middle;
        }

        .platform-info p {
            font-size: 0.92rem;
            color: var(--text-silver);
            line-height: 1.55;
            margin-bottom: 0.7rem;
        }

        .platform-tags {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .platform-tags span {
            padding: 0.25rem 0.7rem;
            border-radius: 16px;
            background: var(--accent-blue-soft);
            border: 1px solid var(--border-blue);
            color: var(--text-silver);
            font-size: 0.78rem;
            font-weight: 500;
            transition: all var(--transition-fast);
        }

        .platform-tags span:hover {
            border-color: var(--border-cyan);
            color: var(--accent-cyan);
        }

        /* ===== PROCESS / STEPS ===== */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 0.5rem;
        }

        .process-step {
            position: relative;
            padding: 2rem 1.6rem;
            background: var(--bg-card);
            border: 1px solid var(--border-blue);
            border-radius: var(--radius-md);
            transition: all var(--transition-med);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .process-step:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-card), var(--shadow-glow-blue);
            transform: translateY(-4px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--accent-blue);
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            box-shadow: 0 0 14px rgba(0, 82, 255, 0.4);
            border: 2px solid var(--border-cyan);
        }

        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
        }

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

        .process-step .step-arrow {
            position: absolute;
            top: 50%;
            right: -1rem;
            transform: translateY(-50%);
            font-size: 1.3rem;
            color: var(--accent-cyan);
            opacity: 0.5;
            transition: opacity var(--transition-fast);
        }

        /* ===== TESTIMONIALS ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-blue);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.6rem;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-med);
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

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

        .testimonial-stars {
            display: flex;
            gap: 0.2rem;
            color: #FFD700;
            font-size: 0.9rem;
        }

        .testimonial-text {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.65;
            font-style: italic;
            margin-bottom: 0;
            flex-grow: 1;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .testimonial-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .testimonial-author-info h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.1rem;
        }

        .testimonial-author-info span {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-container {
            max-width: 760px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-blue);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.9rem;
            overflow: hidden;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-fast);
        }

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

        .accordion-button {
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 1.25rem 1.5rem;
            border: none;
            box-shadow: none !important;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
        }

        .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--accent-cyan);
            outline-offset: -2px;
        }

        .accordion-button::after {
            filter: invert(1);
            opacity: 0.6;
        }

        .accordion-body {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
            padding: 0 1.5rem 1.4rem;
            background: transparent;
        }

        /* ===== FINAL CTA ===== */
        .cta-section {
            padding: 5.5rem 0;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.12) 0%, rgba(0, 240, 255, 0.06) 50%, rgba(8, 9, 15, 0.95) 100%), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-top: 1px solid var(--border-blue);
            border-bottom: 1px solid var(--border-blue);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 1.5rem;
            max-width: 640px;
        }

        .cta-inner h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin-bottom: 0;
        }

        .cta-inner p {
            font-size: 1.1rem;
            color: var(--text-silver);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .cta-buttons {
            display: flex;
            gap: 0.9rem;
            flex-wrap: wrap;
        }

        /* ===== FAB ===== */
        .fab-neon {
            position: fixed;
            left: 1rem;
            bottom: 5.5rem;
            z-index: 1080;
            width: 58px;
            height: 58px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.65);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.65), rgba(8, 9, 15, 0.65)), linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 100%);
            background-origin: border-box;
            background-clip: content-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
            transition: all var(--transition-med);
            opacity: 0.65;
            animation: fab-breathe 3.5s ease-in-out infinite;
            -webkit-tap-highlight-color: transparent;
            position: relative;
        }

        .fab-neon:hover {
            opacity: 1;
            transform: scale(1.15);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.65);
            animation-play-state: paused;
        }

        .fab-neon:active {
            transform: scale(0.92);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.8);
            border-color: #FF69B4;
            color: #FF69B4;
            transition: all 0.08s ease;
        }

        .fab-neon .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: #FF4444;
            border: 2px solid var(--bg-deep);
            animation: fab-pulse-notify 1.8s ease-in-out infinite;
        }

        .fab-neon .fab-label {
            position: absolute;
            left: calc(100% + 0.8rem);
            top: 50%;
            transform: translateY(-50%);
            background: rgba(8, 9, 15, 0.9);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--border-cyan);
            color: var(--accent-cyan);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.35rem 0.8rem;
            border-radius: 16px;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-fast), transform var(--transition-fast);
            transform: translateY(-50%) translateX(-8px);
            letter-spacing: 0.02em;
        }

        .fab-neon:hover .fab-label {
            opacity: 1;
            transform: translateY(-50%) translateX(0);
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: 0.65; }
            50% { opacity: 0.85; }
        }

        @keyframes fab-pulse-notify {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.3); }
        }

        @keyframes pulse-soft {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.55; }
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #06070C;
            border-top: 1px solid var(--border-blue);
            padding: 3.5rem 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
        }

        .footer-brand {
            max-width: 360px;
        }

        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.9rem;
            letter-spacing: -0.01em;
            background: linear-gradient(135deg, var(--text-white) 30%, var(--accent-cyan) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .footer-description {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .footer-column h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .footer-links li {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(0, 82, 255, 0.2);
            padding: 1.3rem 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.84rem;
            color: var(--text-muted);
            margin-bottom: 0;
            letter-spacing: 0.02em;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .criteria-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-step .step-arrow {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 1.8rem;
            }
            .footer-column:last-child {
                grid-column: span 3;
            }
            .hero-meta-stats {
                gap: 1.2rem;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 0.5rem 0;
            }
            .header-inner {
                flex-wrap: wrap;
                gap: 0.6rem;
            }
            .navbar-brand {
                font-size: 1rem;
            }
            .navbar-brand .brand-main {
                font-size: 1.05rem;
            }
            .navbar-brand .brand-sub {
                font-size: 0.65rem;
            }
            .header-actions {
                display: flex;
                gap: 0.4rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.4rem 0.9rem;
                font-size: 0.8rem;
                border-radius: 24px;
            }
            .btn-login {
                display: inline-flex;
            }
            .btn-signup {
                display: inline-flex;
            }
            .navbar-toggler {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                border-top: 1px solid var(--border-blue);
                padding: 1rem 0.5rem;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-menu.show {
                display: block;
            }
            .nav-menu ul {
                flex-direction: column;
                gap: 0.3rem;
            }
            .nav-menu .nav-link {
                display: block;
                padding: 0.7rem 1.2rem;
                font-size: 0.95rem;
                border-radius: 10px;
            }
            .category-hero {
                padding: 6.5rem 0 3rem;
                background-attachment: scroll;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-meta-stats {
                gap: 1rem;
            }
            .hero-meta-stats .stat-value {
                font-size: 1.3rem;
            }
            .hero-visual-card img {
                height: 220px;
            }
            .section-block {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-desc {
                font-size: 0.98rem;
            }
            .pain-panel {
                flex-direction: column;
                padding: 1.8rem 1.4rem;
                gap: 1.2rem;
            }
            .panel-icon {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
            }
            .platform-list {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .cta-inner h2 {
                font-size: 1.7rem;
            }
            .cta-inner p {
                font-size: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
                text-align: left;
            }
            .footer-column:last-child {
                grid-column: auto;
            }
            .fab-neon {
                width: 52px;
                height: 52px;
                font-size: 1.4rem;
                left: 0.8rem;
                bottom: 5rem;
            }
        }

        @media (max-width: 520px) {
            .container-fluid {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .navbar-brand .brand-sub {
                display: none;
            }
            .btn-login {
                display: inline-flex !important;
            }
            .btn-signup {
                display: inline-flex !important;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 0.92rem;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 0.7rem;
            }
            .hero-cta-group .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-meta-stats {
                flex-wrap: wrap;
                gap: 0.8rem;
            }
            .hero-meta-stats .stat-value {
                font-size: 1.15rem;
            }
            .criteria-grid {
                grid-template-columns: 1fr;
            }
            .process-flow {
                grid-template-columns: 1fr;
            }
            .platform-item {
                flex-direction: column;
                gap: 1rem;
                padding: 1.3rem 1.1rem;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .section-desc {
                font-size: 0.93rem;
            }
            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }
            .cta-buttons .btn {
                width: 100%;
                justify-content: center;
            }
            .footer-logo {
                font-size: 1.05rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.72);
            --bg-card-hover: rgba(20, 30, 55, 0.85);
            --glass-border: rgba(0, 240, 255, 0.14);
            --glass-border-strong: rgba(0, 240, 255, 0.32);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-glow: rgba(0, 240, 255, 0.45);
            --accent-glow-strong: rgba(0, 240, 255, 0.65);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8B96A8;
            --text-gold: #FFD700;
            --gradient-primary: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --gradient-fab: linear-gradient(120deg, #CCFF00, #0052FF 55%, #00F0FF);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 48px rgba(0, 82, 255, 0.28), 0 0 24px rgba(0, 240, 255, 0.18);
            --shadow-btn-glow: 0 0 18px rgba(0, 240, 255, 0.45);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', 'Arial', sans-serif;
            --spacing-section: 5rem;
            --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        * {
            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-sans);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.62;
            overflow-x: hidden;
            min-height: 100vh;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(circle at 22% 28%, rgba(0, 82, 255, 0.05) 0%, transparent 42%),
                              radial-gradient(circle at 78% 62%, rgba(0, 240, 255, 0.04) 0%, transparent 40%),
                              linear-gradient(180deg, #08090F 0%, #0D111E 100%);
            z-index: -1;
            pointer-events: none;
        }

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

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

        a:hover,
        a:focus-visible {
            color: #7FE7FF;
            outline: none;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.28;
            color: var(--text-white);
            margin-bottom: 0.75rem;
        }

        .container {
            max-width: 1180px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== HEADER & NAV ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(8, 9, 15, 0.86);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 70px;
            gap: 1.25rem;
            flex-wrap: nowrap;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            color: var(--text-white);
            font-weight: 800;
            font-size: 1.18rem;
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

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

        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--gradient-primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 0 18px var(--accent-glow);
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: rgba(0, 240, 255, 0.25) transparent;
        }

        .nav-menu::-webkit-scrollbar {
            height: 3px;
        }
        .nav-menu::-webkit-scrollbar-track {
            background: transparent;
        }
        .nav-menu::-webkit-scrollbar-thumb {
            background: rgba(0, 240, 255, 0.3);
            border-radius: 10px;
        }

        .nav-menu li {
            list-style: none;
            flex-shrink: 0;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            color: var(--text-silver);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 0.6rem 1rem;
            border-radius: 30px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            border: 1px solid transparent;
        }

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

        .nav-menu a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--glass-border);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.12);
        }

        .nav-menu a.active .nav-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--accent-cyan);
            border-radius: 50%;
            margin-right: 0.5rem;
            box-shadow: 0 0 8px var(--accent-glow);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            flex-shrink: 0;
        }

        .btn-header-login {
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.55rem 1.05rem;
            border-radius: 30px;
            background: transparent;
            border: 1px solid transparent;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-header-login:hover {
            background: rgba(255, 255, 255, 0.07);
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .btn-header-signup {
            background: var(--gradient-primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 0.55rem 1.35rem;
            border-radius: 30px;
            border: none;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-header-signup:hover {
            color: #fff;
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-white);
            width: 42px;
            height: 42px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

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

        @media (max-width: 991px) {
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.97);
                backdrop-filter: blur(24px);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                display: none;
                overflow-y: auto;
                max-height: calc(100vh - 70px);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.85rem 1.1rem;
                font-size: 1rem;
                border-radius: 10px;
                border: 1px solid transparent;
            }
            .nav-menu a.active {
                border-color: var(--glass-border);
                box-shadow: 0 0 14px rgba(0, 240, 255, 0.1);
            }
            .header-actions {
                display: flex;
                gap: 0.55rem;
            }
            .btn-header-login,
            .btn-header-signup {
                padding: 0.5rem 0.9rem;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                min-height: 60px;
                gap: 0.7rem;
            }
            .logo-link {
                font-size: 0.95rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
                border-radius: 8px;
            }
            .nav-menu {
                top: 60px;
                max-height: calc(100vh - 60px);
            }
            .btn-header-login,
            .btn-header-signup {
                padding: 0.45rem 0.75rem;
                font-size: 0.75rem;
            }
            .header-actions {
                gap: 0.4rem;
            }
        }

        /* ===== HERO ===== */
        .hero-category {
            padding: 4.5rem 0 3.5rem;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.06) 0%, rgba(8, 9, 15, 0.2) 70%);
        }

        .hero-category .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--glass-border);
            border-radius: 30px;
            padding: 0.45rem 1.2rem;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 0.02em;
            margin-bottom: 1.5rem;
            max-width: 100%;
        }

        .hero-category .hero-badge i {
            font-size: 0.75rem;
        }

        .hero-category h1 {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1.1rem;
            max-width: 650px;
            color: var(--text-white);
        }

        .hero-category .hero-summary {
            font-size: 1.06rem;
            color: var(--text-silver);
            max-width: 580px;
            line-height: 1.65;
            margin-bottom: 2rem;
        }

        .hero-status-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.8rem 1.8rem;
            background: rgba(13, 17, 30, 0.65);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 1.1rem 1.5rem;
            margin-bottom: 2rem;
            max-width: 720px;
            backdrop-filter: blur(12px);
        }

        .hero-status-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.85rem;
            color: var(--text-silver);
            white-space: nowrap;
        }

        .hero-status-item .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #00FF88;
            box-shadow: 0 0 10px rgba(0, 255, 136, 0.7);
            animation: pulse-dot 2.2s ease-in-out infinite;
            flex-shrink: 0;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.55; transform: scale(0.8); }
        }

        .hero-icon-matrix {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-bottom: 2.2rem;
            max-width: 720px;
        }

        .hero-icon-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            border-radius: 40px;
            padding: 0.6rem 1.2rem;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-silver);
            backdrop-filter: blur(10px);
            transition: all var(--transition-fast);
            cursor: default;
        }

        .hero-icon-chip:hover {
            border-color: var(--glass-border-strong);
            color: var(--text-white);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.1);
            transform: translateY(-2px);
        }

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

        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--gradient-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 0.85rem 2rem;
            border-radius: 40px;
            border: none;
            box-shadow: var(--shadow-btn-glow);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }

        .btn-primary-glow:hover {
            color: #fff;
            box-shadow: 0 0 34px rgba(0, 240, 255, 0.65);
            transform: translateY(-2px);
        }

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

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

        @media (max-width: 767px) {
            .hero-category {
                padding: 3rem 0 2.5rem;
            }
            .hero-category h1 {
                font-size: 1.75rem;
            }
            .hero-category .hero-summary {
                font-size: 0.97rem;
            }
            .hero-status-bar {
                padding: 0.9rem 1.1rem;
                gap: 0.6rem 1.2rem;
            }
            .hero-status-item {
                font-size: 0.78rem;
            }
            .hero-icon-chip {
                padding: 0.5rem 1rem;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .hero-category {
                padding: 2.2rem 0 1.8rem;
            }
            .hero-category h1 {
                font-size: 1.5rem;
            }
            .hero-status-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.7rem;
            }
            .hero-icon-matrix {
                gap: 0.55rem;
            }
            .hero-icon-chip {
                padding: 0.45rem 0.85rem;
                font-size: 0.75rem;
            }
            .btn-primary-glow {
                padding: 0.75rem 1.5rem;
                font-size: 0.92rem;
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== GLASS CARD (通用) ===== */
        .glass-card {
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            overflow: hidden;
        }

        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--glass-border-strong);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        /* ===== SECTION HEADINGS ===== */
        .section-title {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.015em;
            margin-bottom: 0.9rem;
            line-height: 1.25;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 640px;
            line-height: 1.65;
            margin-bottom: 2.5rem;
        }

        .section-kicker {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--accent-cyan);
            margin-bottom: 0.7rem;
        }

        @media (max-width: 767px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 1.8rem;
            }
        }

        /* ===== 痛点板块 ===== */
        .pain-section {
            padding: var(--spacing-section) 0;
            background: rgba(255, 255, 255, 0.015);
        }

        .pain-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.4rem;
            margin-top: 1rem;
        }

        .pain-item {
            background: rgba(255, 255, 255, 0.025);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 1.6rem 1.5rem;
            transition: all var(--transition-fast);
        }

        .pain-item:hover {
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(255, 100, 100, 0.25);
        }

        .pain-icon {
            width: 46px;
            height: 46px;
            background: rgba(255, 82, 82, 0.12);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #FF7A6B;
            margin-bottom: 1rem;
        }

        .pain-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .pain-item p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== 解决方案板块 ===== */
        .solution-section {
            padding: var(--spacing-section) 0;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.03) 0%, transparent 60%);
        }

        .solution-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.8rem;
            align-items: center;
        }

        .solution-image-wrap {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
            border: 1px solid var(--glass-border);
        }

        .solution-image-wrap img {
            width: 100%;
            height: auto;
            min-height: 280px;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .solution-image-wrap:hover img {
            transform: scale(1.04);
        }

        .solution-image-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15) 0%, rgba(0, 240, 255, 0.06) 50%, rgba(8, 9, 15, 0.4) 100%);
            pointer-events: none;
        }

        .solution-checklist {
            list-style: none;
            padding: 0;
            margin: 1.5rem 0 0;
        }

        .solution-checklist li {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            padding: 0.7rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.97rem;
            color: var(--text-silver);
            line-height: 1.55;
        }

        .solution-checklist li:last-child {
            border-bottom: none;
        }

        .solution-checklist li i {
            color: var(--accent-cyan);
            font-size: 0.9rem;
            margin-top: 0.2rem;
            text-shadow: 0 0 8px var(--accent-glow);
            flex-shrink: 0;
        }

        @media (max-width: 991px) {
            .solution-layout {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .solution-image-wrap {
                max-width: 520px;
            }
        }

        /* ===== 成果/数据板块 ===== */
        .results-section {
            padding: var(--spacing-section) 0;
            background: rgba(255, 255, 255, 0.015);
        }

        .results-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.2rem;
            margin-top: 0.5rem;
        }

        .result-stat {
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.4rem;
            text-align: left;
            backdrop-filter: blur(12px);
            transition: all var(--transition-fast);
        }

        .result-stat:hover {
            border-color: var(--glass-border-strong);
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.1);
        }

        .result-stat .stat-number {
            display: block;
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.02em;
            line-height: 1.1;
            margin-bottom: 0.35rem;
            text-shadow: 0 0 18px var(--accent-glow);
        }

        .result-stat .stat-label {
            font-size: 0.88rem;
            color: var(--text-muted);
            font-weight: 500;
            line-height: 1.4;
        }

        @media (max-width: 991px) {
            .results-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .results-grid {
                grid-template-columns: 1fr;
                gap: 0.9rem;
            }
            .result-stat {
                padding: 1.2rem 1.2rem;
            }
            .result-stat .stat-number {
                font-size: 1.7rem;
            }
        }

        /* ===== 客户证言 ===== */
        .testimonials-section {
            padding: var(--spacing-section) 0;
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.4rem;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.6rem;
            backdrop-filter: blur(14px);
            display: flex;
            flex-direction: column;
            transition: all var(--transition-fast);
        }

        .testimonial-card:hover {
            border-color: var(--glass-border-strong);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
        }

        .testimonial-quote {
            font-size: 0.97rem;
            color: var(--text-silver);
            line-height: 1.66;
            flex: 1;
            margin-bottom: 1.2rem;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 0.85rem;
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            font-size: 0.95rem;
            flex-shrink: 0;
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.25);
        }

        .testimonial-name {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-white);
            margin-bottom: 0.1rem;
        }

        .testimonial-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .testimonial-stars {
            color: #FFD700;
            font-size: 0.8rem;
            margin-bottom: 0.7rem;
            letter-spacing: 0.1em;
        }

        @media (max-width: 991px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 1.1rem;
            }
        }

        /* ===== 排行/对比板块 ===== */
        .ranking-section {
            padding: var(--spacing-section) 0;
            background: rgba(255, 255, 255, 0.015);
        }

        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
            margin-top: 0.5rem;
        }

        .ranking-row {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 1.1rem 1.4rem;
            backdrop-filter: blur(10px);
            transition: all var(--transition-fast);
            flex-wrap: wrap;
        }

        .ranking-row:hover {
            border-color: var(--glass-border-strong);
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.08);
            transform: translateX(4px);
        }

        .ranking-position {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--glass-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.95rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
        }

        .ranking-info {
            flex: 1;
            min-width: 180px;
        }

        .ranking-info h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.2rem;
        }

        .ranking-info p {
            font-size: 0.83rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .ranking-badges {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .ranking-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 0.75rem;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-silver);
            white-space: nowrap;
        }

        .ranking-badge i {
            color: var(--accent-cyan);
            font-size: 0.65rem;
        }

        @media (max-width: 767px) {
            .ranking-row {
                padding: 0.9rem 1rem;
                gap: 0.75rem;
            }
            .ranking-position {
                width: 32px;
                height: 32px;
                font-size: 0.8rem;
                border-radius: 8px;
            }
            .ranking-info h3 {
                font-size: 0.9rem;
            }
            .ranking-badges {
                width: 100%;
                margin-top: 0.4rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--spacing-section) 0;
        }

        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.8rem;
            overflow: hidden;
            backdrop-filter: blur(12px);
            transition: all var(--transition-fast);
        }

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

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.98rem;
            padding: 1.2rem 1.4rem;
            border: none;
            box-shadow: none;
            transition: all var(--transition-fast);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.05);
            color: var(--accent-cyan);
            box-shadow: none;
        }

        .faq-accordion .accordion-button::after {
            filter: invert(1) brightness(2);
            transition: transform var(--transition-fast);
        }

        .faq-accordion .accordion-button:focus-visible {
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.3);
        }

        .faq-accordion .accordion-body {
            background: transparent;
            color: var(--text-silver);
            font-size: 0.92rem;
            line-height: 1.65;
            padding: 0.2rem 1.4rem 1.3rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--spacing-section) 0 4rem;
        }

        .cta-panel {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15) 0%, rgba(0, 240, 255, 0.06) 50%, rgba(13, 17, 30, 0.7) 100%);
            border: 1px solid var(--glass-border-strong);
            border-radius: var(--radius-xl);
            padding: 3rem 2.5rem;
            text-align: center;
            backdrop-filter: blur(18px);
            box-shadow: 0 20px 60px rgba(0, 82, 255, 0.15);
        }

        .cta-panel h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 0.9rem;
        }

        .cta-panel p {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 520px;
            margin: 0 auto 1.8rem;
            line-height: 1.65;
        }

        .cta-actions {
            display: flex;
            gap: 0.9rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-secondary-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.98rem;
            padding: 0.8rem 1.8rem;
            border-radius: 40px;
            transition: all var(--transition-fast);
        }

        .btn-secondary-outline:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.4);
            color: var(--text-white);
        }

        @media (max-width: 767px) {
            .cta-panel {
                padding: 2rem 1.4rem;
            }
            .cta-panel h2 {
                font-size: 1.4rem;
            }
            .cta-panel p {
                font-size: 0.95rem;
            }
            .cta-actions {
                flex-direction: column;
            }
            .btn-primary-glow,
            .btn-secondary-outline {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== FAB ===== */
        .fab-neon {
            position: fixed;
            left: 1.1rem;
            bottom: 5.8rem;
            z-index: 1080;
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid transparent;
            background-clip: padding-box, border-box;
            background-origin: padding-box, border-box;
            background-image: linear-gradient(rgba(8, 9, 15, 0.72), rgba(8, 9, 15, 0.72)),
                              var(--gradient-fab);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.35rem;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4), 0 8px 28px rgba(0, 0, 0, 0.5);
            transition: all var(--transition-smooth);
            animation: fab-breathe 3.2s ease-in-out infinite;
            text-decoration: none;
        }

        .fab-neon:hover {
            color: #fff;
            box-shadow: 0 0 38px rgba(0, 240, 255, 0.75), 0 12px 36px rgba(0, 0, 0, 0.6);
            transform: scale(1.12);
            animation-play-state: paused;
        }

        .fab-neon:active {
            transform: scale(0.92);
            box-shadow: 0 0 18px rgba(255, 0, 127, 0.6);
        }

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

        .fab-notification {
            position: absolute;
            top: 0;
            right: 0;
            width: 12px;
            height: 12px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #08090F;
            animation: notif-blink 2.8s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: 0.68; }
            50% { opacity: 1; }
        }

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

        @media (max-width: 520px) {
            .fab-neon {
                width: 48px;
                height: 48px;
                font-size: 1.15rem;
                left: 0.8rem;
                bottom: 5rem;
            }
            .fab-notification {
                width: 10px;
                height: 10px;
            }
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: rgba(8, 9, 15, 0.92);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 3.5rem 0 1.8rem;
            margin-top: 1rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 2.2rem;
            margin-bottom: 2.4rem;
        }

        .footer-brand .footer-logo {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.8rem;
            letter-spacing: -0.01em;
        }

        .footer-description {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 340px;
        }

        .footer-column h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 1rem;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }

        .footer-links li {
            font-size: 0.9rem;
        }

        .footer-links a {
            color: var(--text-silver);
            transition: color var(--transition-fast);
        }

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

        .footer-links li i {
            font-size: 0.85rem;
            margin-right: 0.4rem;
            color: var(--accent-cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .footer-description {
                max-width: 100%;
            }
        }

        /* ===== Responsive adjustments ===== */
        @media (max-width: 991px) {
            :root {
                --spacing-section: 3.5rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-section: 2.8rem;
            }
        }

        /* Bootstrap overlay customization */
        .accordion-button:focus {
            border-color: transparent !important;
        }
        .accordion {
            --bs-accordion-border-color: transparent;
            --bs-accordion-bg: transparent;
            --bs-accordion-active-bg: transparent;
            --bs-accordion-btn-bg: transparent;
            --bs-accordion-btn-focus-box-shadow: none;
            --bs-accordion-body-bg: transparent;
        }

/* roulang page: category3 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.72);
            --card-border: rgba(0, 82, 255, 0.28);
            --card-border-hover: rgba(0, 240, 255, 0.65);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-white: #FFFFFF;
            --accent-silver: #CBD5E1;
            --accent-muted: #8A94A8;
            --accent-danger: #FF3B5C;
            --accent-gold: #FFD700;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-tertiary: #8A94A8;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.35);
            --shadow-glow-blue: 0 0 24px rgba(0, 82, 255, 0.4);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-fast: 0.15s ease;
            --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --section-spacing: 5.5rem;
            --section-spacing-mobile: 3.5rem;
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 20% 10%, rgba(0, 82, 255, 0.12) 0%, transparent 55%),
                        radial-gradient(ellipse at 80% 30%, rgba(0, 240, 255, 0.07) 0%, transparent 50%),
                        radial-gradient(ellipse at 55% 85%, rgba(0, 82, 255, 0.08) 0%, transparent 45%);
            pointer-events: none;
            z-index: 0;
        }

        body > * {
            position: relative;
            z-index: 1;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 2.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 3rem;
            }
        }

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

        a:hover {
            color: #66F5FF;
            text-decoration: none;
        }

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

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

        h1, h2, h3, h4, h5, h6 {
            margin-top: 0;
            font-weight: 800;
            line-height: 1.25;
        }

        h1 {
            font-size: clamp(1.8rem, 4.2vw, 2.9rem);
            font-weight: 900;
            letter-spacing: -0.5px;
            color: var(--text-primary);
        }

        h2 {
            font-size: clamp(1.4rem, 3vw, 2.1rem);
            font-weight: 800;
            letter-spacing: -0.3px;
            color: var(--text-primary);
        }

        h3 {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            font-weight: 700;
            color: var(--text-primary);
        }

        p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.65;
            margin-bottom: 1rem;
        }

        .text-accent {
            color: var(--accent-cyan) !important;
        }
        .text-gold {
            color: var(--accent-gold) !important;
        }
        .text-muted {
            color: var(--text-tertiary) !important;
        }
        .text-silver {
            color: var(--accent-silver) !important;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), border-color var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.94);
            border-bottom-color: rgba(0, 240, 255, 0.18);
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.45);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 1rem;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-weight: 900;
            font-size: 1.05rem;
            color: var(--text-primary);
            letter-spacing: -0.2px;
            line-height: 1.25;
            max-width: 220px;
            transition: color var(--transition-base);
        }

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

        .nav-logo-icon {
            width: 38px;
            height: 38px;
            min-width: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: var(--shadow-glow-blue);
        }

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

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 0.95rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: 50px;
            transition: color var(--transition-base), background var(--transition-base);
            white-space: nowrap;
        }

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

        .nav-menu 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);
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            margin-left: 0.5rem;
        }

        .btn-login {
            padding: 0.5rem 1.2rem;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            cursor: pointer;
            transition: border-color var(--transition-base), color var(--transition-base);
            white-space: nowrap;
            font-family: var(--font-family);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        .btn-signup {
            padding: 0.5rem 1.4rem;
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            box-shadow: var(--shadow-glow-blue);
            transition: transform var(--transition-fast), box-shadow var(--transition-base);
            white-space: nowrap;
            font-family: var(--font-family);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.55);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-subtle);
            border-radius: 8px;
            padding: 0.5rem 0.65rem;
            cursor: pointer;
            font-size: 1.2rem;
            color: var(--text-primary);
            transition: border-color var(--transition-base);
        }

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

        @media (max-width: 992px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 1rem 1.5rem;
                gap: 0.25rem;
                border-bottom: 1px solid var(--border-subtle);
                box-shadow: var(--shadow-md);
            }

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

            .nav-menu a {
                width: 100%;
                padding: 0.75rem 1rem;
                border-radius: 10px;
                font-size: 0.95rem;
            }

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

            .nav-auth {
                gap: 0.4rem;
            }

            .btn-login,
            .btn-signup {
                padding: 0.45rem 0.85rem;
                font-size: 0.78rem;
            }
        }

        @media (max-width: 480px) {
            .nav-logo {
                font-size: 0.85rem;
                max-width: 150px;
            }
            .nav-logo-icon {
                width: 32px;
                height: 32px;
                min-width: 32px;
                font-size: 0.9rem;
            }
            .nav-wrapper {
                height: 60px;
            }
            .nav-menu {
                top: 60px;
                padding: 0.75rem 1rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.4rem 0.7rem;
                font-size: 0.72rem;
            }
            .btn-login {
                padding: 0.4rem 0.7rem;
            }
        }

        /* ========== HERO ========== */
        .hero {
            padding: 9rem 0 4.5rem;
            position: relative;
            overflow: hidden;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            pointer-events: none;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.75) 0%, rgba(8, 9, 15, 0.55) 40%, rgba(8, 9, 15, 0.88) 100%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 620px;
            text-align: left;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1rem;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.28);
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--accent-cyan);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 1.25rem;
        }

        .hero-badge i {
            font-size: 0.85rem;
        }

        .hero h1 {
            margin-bottom: 1.2rem;
            font-weight: 900;
            letter-spacing: -0.8px;
        }

        .hero-description {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 550px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.9rem;
            margin-bottom: 2.5rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 1.9rem;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            box-shadow: var(--shadow-glow-blue);
            transition: transform var(--transition-fast), box-shadow var(--transition-base);
            font-family: var(--font-family);
            text-align: center;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.6);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 1.7rem;
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 50px;
            cursor: pointer;
            transition: border-color var(--transition-base), background var(--transition-base);
            font-family: var(--font-family);
            text-align: center;
        }

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

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 1.8rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-subtle);
        }

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

        .hero-stat-value {
            font-size: 1.55rem;
            font-weight: 900;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
        }

        .hero-stat-label {
            font-size: 0.8rem;
            color: var(--text-tertiary);
            font-weight: 500;
            margin-top: 0.2rem;
        }

        /* Hero right panel - schedule visual */
        .hero-panel {
            position: relative;
            z-index: 2;
            background: rgba(13, 17, 30, 0.75);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(0, 82, 255, 0.25);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
            max-width: 420px;
            margin-left: auto;
        }

        .hero-panel-title {
            font-size: 1rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
        }

        .hero-panel-sub {
            font-size: 0.82rem;
            color: var(--text-tertiary);
            margin-bottom: 1.5rem;
        }

        .schedule-slots {
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
            margin-bottom: 1.5rem;
        }

        .schedule-slot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.8rem;
            padding: 0.75rem 1rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

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

        .schedule-slot-time {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-primary);
        }

        .schedule-slot-status {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.12);
            padding: 0.2rem 0.65rem;
            border-radius: 50px;
            white-space: nowrap;
        }

        .schedule-slot-status.hot {
            color: var(--accent-danger);
            background: rgba(255, 59, 92, 0.12);
        }

        .hero-panel-btn {
            width: 100%;
            padding: 0.8rem 1.5rem;
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            font-family: var(--font-family);
            transition: transform var(--transition-fast), box-shadow var(--transition-base);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
        }

        .hero-panel-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.5);
        }

        @media (max-width: 992px) {
            .hero {
                padding: 7rem 0 3.5rem;
                min-height: auto;
            }
            .hero-panel {
                max-width: 100%;
                margin-left: 0;
                margin-top: 2.5rem;
            }
        }

        @media (max-width: 576px) {
            .hero {
                padding: 6rem 0 3rem;
            }
            .hero h1 {
                font-size: 1.65rem;
            }
            .hero-description {
                font-size: 0.95rem;
            }
            .hero-stats {
                gap: 1.2rem;
            }
            .hero-stat-value {
                font-size: 1.2rem;
            }
            .hero-panel {
                padding: 1.3rem;
                border-radius: var(--radius-md);
            }
            .btn-primary,
            .btn-secondary {
                padding: 0.7rem 1.2rem;
                font-size: 0.85rem;
            }
        }

        /* ========== SECTION BASE ========== */
        .section {
            padding: var(--section-spacing) 0;
        }

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

        .section-header {
            margin-bottom: 2.8rem;
            text-align: left;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.76rem;
            font-weight: 800;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: 0.8rem;
        }

        .section-label::before {
            content: '';
            display: inline-block;
            width: 24px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }

        .section-header h2 {
            margin-bottom: 0.7rem;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-tertiary);
            max-width: 600px;
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-spacing-mobile) 0;
            }
            .section-header {
                margin-bottom: 2rem;
            }
        }

        /* ========== PROBLEM / PAIN POINT ========== */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.2rem;
        }

        .pain-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.5rem;
            background: rgba(13, 17, 30, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: border-color var(--transition-base), transform var(--transition-base);
        }

        .pain-item:hover {
            border-color: rgba(255, 59, 92, 0.4);
            transform: translateY(-3px);
        }

        .pain-icon {
            width: 42px;
            height: 42px;
            min-width: 42px;
            border-radius: 12px;
            background: rgba(255, 59, 92, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--accent-danger);
        }

        .pain-item h3 {
            font-size: 0.95rem;
            margin-bottom: 0.4rem;
        }

        .pain-item p {
            font-size: 0.85rem;
            color: var(--text-tertiary);
            margin-bottom: 0;
            line-height: 1.55;
        }

        /* ========== SOLUTION / OFFER CARDS ========== */
        .offer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.4rem;
        }

        .offer-card {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .offer-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .offer-card:hover {
            border-color: var(--card-border-hover);
            transform: translateY(-5px);
            box-shadow: var(--shadow-glow);
        }

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

        .offer-card.highlight {
            border-color: rgba(255, 215, 0, 0.4);
            background: linear-gradient(180deg, rgba(255, 215, 0, 0.04) 0%, var(--card-bg) 55%);
        }

        .offer-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.7rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.6px;
            padding: 0.25rem 0.7rem;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.22);
            margin-bottom: 1rem;
        }

        .offer-tag.hot {
            background: rgba(255, 59, 92, 0.12);
            color: var(--accent-danger);
            border-color: rgba(255, 59, 92, 0.3);
        }

        .offer-tag.gold {
            background: rgba(255, 215, 0, 0.1);
            color: var(--accent-gold);
            border-color: rgba(255, 215, 0, 0.25);
        }

        .offer-card h3 {
            font-size: 1.12rem;
            margin-bottom: 0.6rem;
            font-weight: 800;
        }

        .offer-card p {
            font-size: 0.88rem;
            color: var(--text-tertiary);
            line-height: 1.6;
            margin-bottom: 1.2rem;
        }

        .offer-value {
            display: flex;
            align-items: baseline;
            gap: 0.4rem;
            margin-bottom: 0.8rem;
        }

        .offer-value-number {
            font-size: 1.7rem;
            font-weight: 900;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
        }

        .offer-value-unit {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-tertiary);
        }

        .offer-detail {
            list-style: none;
            margin: 0 0 1.4rem 0;
            padding: 0;
        }

        .offer-detail li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.82rem;
            color: var(--text-secondary);
            padding: 0.3rem 0;
        }

        .offer-detail li i {
            color: var(--accent-cyan);
            font-size: 0.75rem;
        }

        .btn-offer {
            display: block;
            width: 100%;
            text-align: center;
            padding: 0.75rem 1.2rem;
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--accent-cyan);
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 50px;
            cursor: pointer;
            transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
            font-family: var(--font-family);
        }

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

        /* ========== RESULTS / DATA ========== */
        .results-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.4rem;
        }

        .result-card {
            text-align: left;
            padding: 1.8rem 1.5rem;
            background: rgba(13, 17, 30, 0.65);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .result-card:hover {
            border-color: rgba(0, 240, 255, 0.3);
            box-shadow: var(--shadow-glow);
        }

        .result-number {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-cyan);
            letter-spacing: -0.5px;
        }

        .result-label {
            font-size: 0.85rem;
            color: var(--text-tertiary);
            margin-top: 0.3rem;
            font-weight: 500;
        }

        .result-change {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-top: 0.5rem;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.4rem;
        }

        .testimonial-card {
            padding: 1.6rem;
            background: rgba(13, 17, 30, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: border-color var(--transition-base);
        }

        .testimonial-card:hover {
            border-color: rgba(0, 240, 255, 0.25);
        }

        .testimonial-quote {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 1.2rem;
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.3) 0%, rgba(0, 240, 255, 0.3) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .testimonial-name {
            font-size: 0.86rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .testimonial-meta {
            font-size: 0.75rem;
            color: var(--text-tertiary);
        }

        /* ========== PROCESS / FLOW ========== */
        .flow-steps {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
        }

        .flow-steps::before {
            content: '';
            position: absolute;
            left: 22px;
            top: 12px;
            bottom: 12px;
            width: 2px;
            background: linear-gradient(180deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            opacity: 0.4;
        }

        .flow-step {
            display: flex;
            gap: 1.2rem;
            padding: 0.85rem 0;
            position: relative;
        }

        .flow-step-number {
            width: 44px;
            height: 44px;
            min-width: 44px;
            border-radius: 50%;
            background: var(--secondary-bg);
            border: 2px solid var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 0.95rem;
            color: var(--accent-cyan);
            z-index: 1;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
        }

        .flow-step-content h3 {
            font-size: 1rem;
            margin-bottom: 0.3rem;
            font-weight: 700;
        }

        .flow-step-content p {
            font-size: 0.88rem;
            color: var(--text-tertiary);
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .faq-item {
            background: rgba(13, 17, 30, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-base);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            width: 100%;
            padding: 1.1rem 1.4rem;
            background: transparent;
            border: none;
            cursor: pointer;
            font-family: var(--font-family);
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            text-align: left;
            transition: color var(--transition-base);
        }

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

        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-tertiary);
            transition: transform var(--transition-base);
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
            color: var(--accent-cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 1.4rem 1.2rem;
            font-size: 0.88rem;
            color: var(--text-tertiary);
            line-height: 1.65;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 4rem 0;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.06) 0%, rgba(13, 17, 30, 0.9) 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .cta-box {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            padding: 2.8rem 2rem;
            background: rgba(13, 17, 30, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 240, 255, 0.22);
            border-radius: var(--radius-xl);
            box-shadow: 0 20px 55px rgba(0, 0, 0, 0.5);
        }

        .cta-box h2 {
            margin-bottom: 0.8rem;
        }

        .cta-box p {
            color: var(--text-tertiary);
            margin-bottom: 1.8rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #05060A;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: 3.5rem 0 1.8rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand .footer-logo {
            font-size: 1.15rem;
            font-weight: 900;
            color: var(--text-primary);
            margin-bottom: 0.8rem;
            letter-spacing: -0.3px;
        }

        .footer-description {
            font-size: 0.82rem;
            color: var(--text-tertiary);
            line-height: 1.6;
            margin-bottom: 0;
            max-width: 300px;
        }

        .footer-column h4 {
            font-size: 0.85rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

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

        .footer-links li {
            margin-bottom: 0.55rem;
        }

        .footer-links a {
            font-size: 0.82rem;
            color: var(--text-tertiary);
            transition: color var(--transition-base);
        }

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

        .footer-links li:not(:has(a)) {
            font-size: 0.82rem;
            color: var(--text-tertiary);
            display: flex;
            align-items: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 1.5rem;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.78rem;
            color: var(--text-tertiary);
            margin-bottom: 0;
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .site-footer {
                padding: 2.5rem 0 1.2rem;
            }
        }

        /* ========== FAB ========== */
        .fab-float {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1040;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.72);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.72), rgba(8, 9, 15, 0.72)), linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            background-origin: border-box;
            background-clip: content-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            color: var(--accent-cyan);
            font-size: 1.3rem;
            transition: transform var(--transition-fast), box-shadow var(--transition-base), opacity var(--transition-base);
            opacity: 0.6;
            animation: fabGlow 3s ease-in-out infinite;
        }

        @keyframes fabGlow {
            0%, 100% {
                box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            }
        }

        .fab-float:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.7);
        }

        .fab-float::after {
            content: '';
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent-danger);
            border: 2px solid var(--primary-bg);
            animation: fabDotBlink 2s ease-in-out infinite;
        }

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

        @media (max-width: 768px) {
            .fab-float {
                width: 46px;
                height: 46px;
                font-size: 1.1rem;
                bottom: 5rem;
                left: 0.8rem;
            }
        }

        /* ========== IMAGE STYLES ========== */
        .img-cover {
            width: 100%;
            border-radius: var(--radius-md);
            object-fit: cover;
            border: 1px solid var(--border-subtle);
            transition: border-color var(--transition-base), transform var(--transition-base);
        }

        .img-cover:hover {
            border-color: rgba(0, 240, 255, 0.3);
            transform: scale(1.01);
        }

        .img-bracket {
            width: 100%;
            border-radius: var(--radius-md);
            aspect-ratio: 16/9;
            object-fit: cover;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        /* ========== ASYMMETRIC SECTION ========== */
        .split-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .split-section.reverse {
            direction: rtl;
        }

        .split-section.reverse > * {
            direction: ltr;
        }

        @media (max-width: 992px) {
            .split-section {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        /* ========== TRUST BADGES ========== */
        .trust-row {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-top: 1.5rem;
        }

        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.45rem 1rem;
            font-size: 0.76rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            transition: border-color var(--transition-base);
        }

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

        .trust-badge i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }