/* roulang page: index */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.75);
            --card-border: rgba(0, 240, 255, 0.18);
            --accent-cyan: #00F0FF;
            --accent-blue: #0052FF;
            --accent-glow: rgba(0, 240, 255, 0.35);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8892A6;
            --gradient-accent: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --gradient-dark: linear-gradient(180deg, #08090F 0%, #0D111E 100%);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.25);
            --shadow-glow-strong: 0 0 32px rgba(0, 240, 255, 0.45);
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.32s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-body);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at 28% 12%, rgba(0, 82, 255, 0.1) 0%, transparent 60%),
                radial-gradient(ellipse at 72% 85%, rgba(0, 240, 255, 0.06) 0%, transparent 55%),
                var(--gradient-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: #66F5FF;
        }
        button,
        .button {
            font-family: var(--font-body);
            cursor: pointer;
            transition: all var(--transition-smooth);
            outline: none;
        }
        button:focus-visible,
        .button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            line-height: 1.25;
            font-weight: 700;
        }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
        h3 { font-size: clamp(1.2rem, 2.6vw, 1.6rem); }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: background var(--transition-smooth);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.88;
            color: var(--accent-cyan);
            -webkit-text-fill-color: var(--accent-cyan);
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            align-items: center;
            margin: 0;
            padding: 0;
        }
        .nav-list li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-list li a:hover,
        .nav-list li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        .nav-list li a.btn-nav {
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.3);
        }
        .nav-list li a.btn-nav:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }
        @media (max-width: 880px) {
            .mobile-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(22px);
                -webkit-backdrop-filter: blur(22px);
                padding: 20px 24px;
                gap: 8px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                border-bottom: 1px solid rgba(0, 240, 255, 0.18);
                pointer-events: none;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list li a {
                display: block;
                text-align: left;
                padding: 14px 16px;
                font-size: 1.05rem;
            }
        }

        /* Hero */
        .hero {
            padding: 140px 0 80px;
            position: relative;
            overflow: hidden;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            background-blend-mode: overlay;
            background-color: rgba(8, 9, 15, 0.75);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(0, 82, 255, 0.25) 0%, transparent 65%);
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            margin-bottom: 18px;
            color: #fff;
            letter-spacing: -0.015em;
        }
        .hero-desc {
            color: var(--text-secondary);
            font-size: 1.1rem;
            line-height: 1.65;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 700;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            border: none;
            font-size: 1rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
            transition: all var(--transition-smooth);
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-weight: 600;
            padding: 12px 26px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            transition: all var(--transition-smooth);
        }
        .btn-ghost:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }
        .hero-compare-card {
            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-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card), 0 0 28px rgba(0, 240, 255, 0.12);
        }
        .hero-compare-card h3 {
            margin-bottom: 6px;
            font-size: 1.35rem;
        }
        .hero-compare-card .compare-sub {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 18px;
        }
        .compare-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.95rem;
        }
        .compare-item i {
            color: var(--accent-cyan);
            font-size: 0.85rem;
        }
        .compare-highlight {
            background: rgba(0, 240, 255, 0.06);
            border-radius: var(--radius-sm);
            padding: 10px 12px;
            margin-top: 6px;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }
        @media (max-width: 840px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero {
                padding: 120px 0 60px;
            }
            .hero-compare-card {
                order: -1;
            }
        }

        /* Sections */
        section {
            padding: 70px 0;
            position: relative;
        }
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            font-weight: 700;
            margin-bottom: 10px;
        }
        .section-title {
            margin-bottom: 14px;
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.6;
            max-width: 680px;
            margin-bottom: 32px;
        }

        /* Pain Points */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }
        .pain-card {
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
        }
        .pain-card:hover {
            border-color: rgba(0, 240, 255, 0.45);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .pain-icon {
            font-size: 2rem;
            margin-bottom: 16px;
            color: var(--accent-cyan);
        }
        .pain-card h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .pain-card p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            margin: 0;
        }

        /* Steps */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            position: relative;
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 3rem;
            font-weight: 900;
            color: rgba(0, 240, 255, 0.1);
            pointer-events: none;
        }
        .step-card h4 { font-size: 1.2rem; margin-bottom: 8px; }
        .step-card p { color: var(--text-secondary); font-size: 0.95rem; margin: 0; }
        @media (max-width: 768px) {
            .steps-row { grid-template-columns: 1fr; }
        }

        /* News / CMS */
        .news-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 28px;
        }
        .news-list {
            list-style: none;
            padding: 0;
        }
        .news-list li {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 16px 0;
        }
        .news-list li:last-child { border-bottom: none; }
        .news-list a {
            font-weight: 600;
            font-size: 1.08rem;
            color: var(--text-primary);
            display: block;
            margin-bottom: 4px;
            transition: color var(--transition-fast);
        }
        .news-list a:hover { color: var(--accent-cyan); }
        .news-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
        }
        .news-summary {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .news-sidebar {
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        .news-sidebar h4 {
            margin-bottom: 12px;
            font-size: 1.1rem;
        }
        .sidebar-links {
            list-style: none;
            padding: 0;
        }
        .sidebar-links li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.04);
        }
        .sidebar-links li:last-child { border-bottom: none; }
        .sidebar-links a {
            color: var(--text-secondary);
            font-size: 0.93rem;
            transition: color var(--transition-fast);
        }
        .sidebar-links a:hover { color: var(--accent-cyan); }
        @media (max-width: 768px) {
            .news-grid { grid-template-columns: 1fr; }
        }

        /* CTA */
        .cta-section {
            text-align: center;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            background-color: rgba(8,9,15,0.8);
            background-blend-mode: overlay;
            padding: 80px 0;
        }
        .cta-section h2 { margin-bottom: 14px; }
        .cta-section p { color: var(--text-secondary); max-width: 560px; margin: 0 auto 28px; }

        /* Compare Table */
        .compare-table-wrap {
            overflow-x: auto;
            margin-top: 20px;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--card-border);
        }
        .compare-table th,
        .compare-table td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            font-size: 0.94rem;
        }
        .compare-table th {
            background: rgba(0, 240, 255, 0.08);
            font-weight: 700;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            font-size: 0.8rem;
        }
        .compare-table td i.fa-check { color: #00F0FF; }
        .compare-table td i.fa-times { color: #8892A6; }
        .compare-table .highlight-row {
            background: rgba(0, 240, 255, 0.05);
            border-left: 3px solid var(--accent-cyan);
        }

        /* Hot Recs */
        .hot-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 20px;
        }
        .hot-big {
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
            overflow: hidden;
        }
        .hot-big img {
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .hot-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: #FF0055;
            color: #fff;
            font-weight: 700;
            font-size: 0.72rem;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.03em;
        }
        .hot-small {
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 18px;
        }
        .hot-small h4 { font-size: 1rem; margin-bottom: 4px; }
        .hot-small .hot-desc { font-size: 0.82rem; color: var(--text-muted); }
        @media (max-width: 768px) {
            .hot-grid { grid-template-columns: 1fr; }
        }

        /* Milestones */
        .milestones {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            border-left: 3px solid var(--accent-cyan);
            padding-left: 28px;
        }
        .milestone-item {
            position: relative;
            padding: 16px 0 16px 28px;
            width: 100%;
        }
        .milestone-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 22px;
            width: 12px;
            height: 12px;
            background: var(--accent-cyan);
            border-radius: 50%;
            box-shadow: 0 0 12px var(--accent-cyan);
        }
        .milestone-year {
            font-weight: 700;
            color: var(--accent-cyan);
            font-size: 0.85rem;
        }
        .milestone-text { color: var(--text-secondary); font-size: 0.95rem; }

        /* Footer */
        .site-footer {
            background: rgba(8,9,15,0.9);
            border-top: 1px solid rgba(0,240,255,0.1);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 28px;
            margin-bottom: 28px;
        }
        .footer-col h4 {
            font-size: 1rem;
            margin-bottom: 12px;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .footer-col ul li a:hover { color: var(--accent-cyan); }
        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.3rem;
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.05);
            color: var(--text-muted);
            font-size: 0.82rem;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 40px;
            background: rgba(8,9,15,0.7);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
            cursor: pointer;
            transition: all var(--transition-smooth);
            opacity: 0.7;
        }
        .fab::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 44px;
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            z-index: -1;
            opacity: 0.7;
        }
        .fab:hover {
            opacity: 1;
            box-shadow: var(--shadow-glow-strong);
            transform: scale(1.1);
        }
        .fab .badge-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 12px;
            height: 12px;
            background: #FF0055;
            border-radius: 50%;
            border: 2px solid #08090F;
        }

        .no-updates {
            padding: 24px;
            color: var(--text-muted);
            font-style: italic;
        }

/* roulang page: article */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.75);
            --card-border: rgba(0, 240, 255, 0.18);
            --accent-cyan: #00F0FF;
            --accent-blue: #0052FF;
            --accent-glow: rgba(0, 240, 255, 0.35);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8892A6;
            --gradient-accent: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --gradient-dark: linear-gradient(180deg, #08090F 0%, #0D111E 100%);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.25);
            --shadow-glow-strong: 0 0 32px rgba(0, 240, 255, 0.45);
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.32s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            margin: 0;
            background-image:
                radial-gradient(ellipse at 28% 12%, rgba(0, 82, 255, 0.1) 0%, transparent 60%),
                radial-gradient(ellipse at 72% 85%, rgba(0, 240, 255, 0.06) 0%, transparent 55%),
                var(--gradient-dark);
        }

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

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

        a:hover {
            color: #66F5FF;
        }

        button,
        .button {
            font-family: var(--font-body);
            cursor: pointer;
            transition: all var(--transition-smooth);
            outline: none;
        }

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

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: background var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .logo:hover {
            opacity: 0.88;
            color: var(--accent-cyan);
            -webkit-text-fill-color: var(--accent-cyan);
        }

        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            align-items: center;
            margin: 0;
            padding: 0;
        }

        .nav-list li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-list li a.btn-nav {
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.3);
        }

        .nav-list li a.btn-nav:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        /* Article Hero */
        .article-hero {
            padding: 120px 0 60px;
            position: relative;
            background:
                radial-gradient(ellipse at 50% 30%, rgba(0, 240, 255, 0.08) 0%, transparent 70%),
                radial-gradient(ellipse at 20% 60%, rgba(0, 82, 255, 0.06) 0%, transparent 60%);
        }

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

        .article-category-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.35);
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 0.01em;
            margin-bottom: 20px;
        }

        .article-hero-title {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2.6rem;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
            padding-bottom: 28px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Article Body */
        .article-body-section {
            padding: 10px 0 60px;
        }

        .article-body-section .container {
            max-width: 860px;
        }

        .article-featured-image {
            width: 100%;
            border-radius: var(--radius-lg);
            margin-bottom: 36px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.55);
            border: 1px solid rgba(0, 240, 255, 0.15);
        }

        .article-cms-content {
            font-size: 1.08rem;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .article-cms-content h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.75rem;
            color: var(--text-primary);
            margin-top: 40px;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
            border-left: 4px solid var(--accent-cyan);
            padding-left: 18px;
        }

        .article-cms-content h3 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 1.35rem;
            color: var(--text-primary);
            margin-top: 30px;
            margin-bottom: 12px;
        }

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

        .article-cms-content ul,
        .article-cms-content ol {
            margin-bottom: 18px;
            padding-left: 24px;
        }

        .article-cms-content li {
            margin-bottom: 6px;
        }

        .article-cms-content blockquote {
            background: rgba(0, 240, 255, 0.06);
            border-left: 4px solid var(--accent-cyan);
            padding: 20px 24px;
            margin: 28px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-size: 1.1rem;
            color: var(--text-primary);
            font-style: italic;
            position: relative;
        }

        .article-cms-content blockquote::before {
            content: '\201C';
            font-size: 4rem;
            color: var(--accent-cyan);
            opacity: 0.25;
            position: absolute;
            top: -10px;
            left: 12px;
            line-height: 1;
        }

        .article-cms-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            border: 1px solid rgba(0, 240, 255, 0.12);
        }

        .article-cms-content a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-cms-content a:hover {
            color: #66F5FF;
        }

        .article-cms-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
        }

        .article-cms-content th,
        .article-cms-content td {
            padding: 12px 16px;
            border: 1px solid rgba(0, 240, 255, 0.2);
            text-align: left;
        }

        .article-cms-content th {
            background: rgba(0, 240, 255, 0.1);
            font-weight: 600;
            color: var(--text-primary);
        }

        /* Not Found */
        .not-found-card {
            text-align: center;
            padding: 60px 40px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
        }

        .not-found-card i {
            font-size: 4rem;
            color: var(--accent-cyan);
            opacity: 0.6;
            margin-bottom: 20px;
            display: block;
        }

        .not-found-card h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2rem;
            margin-bottom: 12px;
        }

        .not-found-card p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .btn-primary {
            display: inline-block;
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            text-decoration: none;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            transition: all var(--transition-smooth);
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #fff;
        }

        /* Related Articles */
        .related-section {
            padding: 40px 0 70px;
            border-top: 1px solid rgba(0, 240, 255, 0.08);
        }

        .related-section .container {
            max-width: 860px;
        }

        .related-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--text-primary);
            margin-bottom: 28px;
            letter-spacing: -0.01em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 22px;
        }

        .related-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 22px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-smooth);
            text-decoration: none;
            display: block;
            box-shadow: 0 2px 14px rgba(0, 0, 0, 0.3);
        }

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

        .related-card h4 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin: 0;
        }

        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 56px 0 28px;
            margin-top: 10px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col .footer-brand {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--text-primary);
            margin-bottom: 10px;
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-col h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

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

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

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

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

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }

            .nav-list {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(22px);
                -webkit-backdrop-filter: blur(22px);
                padding: 20px 24px;
                gap: 8px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                border-bottom: 1px solid rgba(0, 240, 255, 0.18);
                pointer-events: none;
            }

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

            .article-hero-title {
                font-size: 1.8rem;
            }

            .article-cms-content {
                font-size: 1rem;
            }

            .article-cms-content h2 {
                font-size: 1.4rem;
            }

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

        @media (max-width: 520px) {
            .article-hero {
                padding: 100px 0 40px;
            }

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

            .article-meta {
                flex-direction: column;
                gap: 10px;
            }

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

/* roulang page: category2 */
:root {
        --primary-bg: #08090F;
        --secondary-bg: #0D111E;
        --card-bg: rgba(13, 17, 30, 0.75);
        --card-border: rgba(0, 240, 255, 0.18);
        --accent-cyan: #00F0FF;
        --accent-blue: #0052FF;
        --accent-glow: rgba(0, 240, 255, 0.35);
        --text-primary: #FFFFFF;
        --text-secondary: #CBD5E1;
        --text-muted: #8892A6;
        --gradient-accent: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
        --gradient-dark: linear-gradient(180deg, #08090F 0%, #0D111E 100%);
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 22px;
        --radius-xl: 28px;
        --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
        --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.25);
        --shadow-glow-strong: 0 0 32px rgba(0, 240, 255, 0.45);
        --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
        --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
        --transition-fast: 0.18s ease;
        --transition-smooth: 0.32s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
        font-family: var(--font-body);
        background: var(--primary-bg);
        color: var(--text-primary);
        line-height: 1.6;
        overflow-x: hidden;
        min-height: 100vh;
        background-image:
            radial-gradient(ellipse at 28% 12%, rgba(0, 82, 255, 0.1) 0%, transparent 60%),
            radial-gradient(ellipse at 72% 85%, rgba(0, 240, 255, 0.06) 0%, transparent 55%),
            var(--gradient-dark);
    }

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

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

    a:hover {
        color: #66F5FF;
    }

    button,
    .button {
        font-family: var(--font-body);
        cursor: pointer;
        transition: all var(--transition-smooth);
        outline: none;
    }

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

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

    /* Header & Navigation */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 100;
        background: rgba(8, 9, 15, 0.82);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-bottom: 1px solid rgba(0, 240, 255, 0.12);
        transition: background var(--transition-smooth);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 64px;
    }

    .logo {
        font-family: var(--font-heading);
        font-weight: 800;
        font-size: 1.25rem;
        color: var(--text-primary);
        text-decoration: none;
        letter-spacing: -0.02em;
        white-space: nowrap;
        background: var(--gradient-accent);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .logo:hover {
        opacity: 0.88;
        color: var(--accent-cyan);
        -webkit-text-fill-color: var(--accent-cyan);
    }

    .nav-list {
        display: flex;
        list-style: none;
        gap: 6px;
        align-items: center;
        margin: 0;
        padding: 0;
    }

    .nav-list li a {
        display: inline-block;
        padding: 8px 16px;
        border-radius: var(--radius-sm);
        font-weight: 500;
        font-size: 0.95rem;
        color: var(--text-secondary);
        transition: all var(--transition-fast);
        white-space: nowrap;
    }

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

    .nav-list li a.btn-nav {
        background: var(--gradient-accent);
        color: #fff;
        font-weight: 600;
        padding: 9px 20px;
        border-radius: var(--radius-md);
        box-shadow: 0 0 14px rgba(0, 240, 255, 0.3);
    }

    .nav-list li a.btn-nav:hover {
        box-shadow: var(--shadow-glow-strong);
        transform: translateY(-1px);
    }

    .mobile-toggle {
        display: none;
        background: none;
        border: none;
        color: var(--text-primary);
        font-size: 1.6rem;
        cursor: pointer;
    }

    /* Page Banner */
    .page-banner {
        position: relative;
        padding: 140px 0 80px;
        overflow: hidden;
        background: linear-gradient(180deg, rgba(8,9,15,0.6) 0%, var(--secondary-bg) 100%),
                    url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
    }

    .page-banner::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle at 40% 50%, rgba(0,240,255,0.08) 0%, transparent 60%);
        pointer-events: none;
    }

    .banner-content {
        position: relative;
        z-index: 2;
        text-align: left;
        max-width: 780px;
    }

    .banner-badge {
        display: inline-block;
        background: var(--gradient-accent);
        color: #fff;
        font-weight: 600;
        font-size: 0.85rem;
        padding: 6px 18px;
        border-radius: 50px;
        margin-bottom: 20px;
        box-shadow: var(--shadow-glow);
    }

    .banner-content h1 {
        font-family: var(--font-heading);
        font-weight: 800;
        font-size: 2.8rem;
        line-height: 1.2;
        margin-bottom: 20px;
        color: var(--text-primary);
    }

    .banner-content p {
        font-size: 1.15rem;
        color: var(--text-secondary);
        line-height: 1.7;
        margin-bottom: 32px;
        max-width: 620px;
    }

    .banner-stats {
        display: flex;
        gap: 32px;
        flex-wrap: wrap;
    }

    .banner-stat-item {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .stat-icon {
        width: 44px;
        height: 44px;
        border-radius: var(--radius-md);
        background: rgba(0,240,255,0.1);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent-cyan);
        font-size: 1.2rem;
        border: 1px solid var(--card-border);
    }

    .stat-text .stat-number {
        font-weight: 700;
        font-size: 1.4rem;
        color: var(--accent-cyan);
        line-height: 1.2;
    }

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

    /* Main Content Sections */
    main {
        padding: 60px 0;
    }

    .section {
        margin-bottom: 70px;
    }

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

    .section-header h2 {
        font-family: var(--font-heading);
        font-weight: 700;
        font-size: 1.9rem;
        color: var(--text-primary);
        margin-bottom: 12px;
        text-align: left;
    }

    .section-header p {
        color: var(--text-secondary);
        font-size: 1.05rem;
        max-width: 600px;
        text-align: left;
    }

    /* Pain Points Section */
    .pain-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 24px;
    }

    .pain-card {
        background: var(--card-bg);
        border: 1px solid var(--card-border);
        border-radius: var(--radius-lg);
        padding: 28px;
        backdrop-filter: blur(10px);
        transition: all var(--transition-smooth);
        text-align: left;
    }

    .pain-card:hover {
        border-color: rgba(0,240,255,0.4);
        box-shadow: var(--shadow-glow);
        transform: translateY(-3px);
    }

    .pain-icon {
        width: 48px;
        height: 48px;
        border-radius: var(--radius-md);
        background: rgba(0,240,255,0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent-cyan);
        font-size: 1.4rem;
        margin-bottom: 16px;
    }

    .pain-card h3 {
        font-family: var(--font-heading);
        font-weight: 700;
        font-size: 1.15rem;
        color: var(--text-primary);
        margin-bottom: 8px;
    }

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

    /* Solution / Features */
    .solution-block {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 48px;
        align-items: center;
    }

    .solution-text h2 {
        font-family: var(--font-heading);
        font-weight: 700;
        font-size: 1.9rem;
        color: var(--text-primary);
        margin-bottom: 20px;
    }

    .solution-text ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .solution-text ul li {
        position: relative;
        padding-left: 28px;
        margin-bottom: 14px;
        color: var(--text-secondary);
        font-size: 1rem;
        line-height: 1.6;
    }

    .solution-text ul li::before {
        content: '\f00c';
        font-family: 'Font Awesome 6 Free';
        font-weight: 900;
        position: absolute;
        left: 0;
        top: 2px;
        color: var(--accent-cyan);
        font-size: 0.9rem;
    }

    .solution-image {
        position: relative;
        border-radius: var(--radius-xl);
        overflow: hidden;
        border: 1px solid var(--card-border);
        box-shadow: var(--shadow-card);
    }

    .solution-image img {
        width: 100%;
        height: auto;
        object-fit: cover;
    }

    /* Match Odds Table */
    .odds-table-wrapper {
        background: var(--card-bg);
        border: 1px solid var(--card-border);
        border-radius: var(--radius-lg);
        padding: 24px;
        overflow-x: auto;
        backdrop-filter: blur(10px);
    }

    .odds-table {
        width: 100%;
        border-collapse: collapse;
        min-width: 600px;
    }

    .odds-table th {
        text-align: left;
        padding: 12px 16px;
        font-weight: 600;
        font-size: 0.9rem;
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        border-bottom: 1px solid rgba(0,240,255,0.15);
    }

    .odds-table td {
        padding: 14px 16px;
        border-bottom: 1px solid rgba(0,240,255,0.08);
        color: var(--text-secondary);
        font-size: 0.95rem;
    }

    .odds-table tbody tr:hover {
        background: rgba(0,240,255,0.04);
    }

    .odds-value {
        font-weight: 700;
        color: var(--accent-cyan);
    }

    .match-teams {
        display: flex;
        align-items: center;
        gap: 8px;
        font-weight: 600;
        color: var(--text-primary);
    }

    /* Testimonials */
    .testimonial-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 24px;
    }

    .testimonial-card {
        background: var(--card-bg);
        border: 1px solid var(--card-border);
        border-radius: var(--radius-lg);
        padding: 28px;
        text-align: left;
        backdrop-filter: blur(10px);
    }

    .testimonial-stars {
        color: #FFD700;
        font-size: 0.95rem;
        margin-bottom: 12px;
    }

    .testimonial-card blockquote {
        font-size: 0.98rem;
        color: var(--text-secondary);
        line-height: 1.6;
        margin: 0 0 16px 0;
        font-style: italic;
    }

    .testimonial-author {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .author-avatar {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--gradient-accent);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        color: #fff;
        font-size: 0.9rem;
    }

    .author-name {
        font-weight: 600;
        font-size: 0.9rem;
        color: var(--text-primary);
    }

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

    /* CTA Section */
    .cta-section {
        background: linear-gradient(135deg, rgba(0,82,255,0.12) 0%, rgba(0,240,255,0.08) 100%);
        border: 1px solid var(--card-border);
        border-radius: var(--radius-xl);
        padding: 48px;
        text-align: left;
        backdrop-filter: blur(12px);
        position: relative;
        overflow: hidden;
    }

    .cta-section::after {
        content: '';
        position: absolute;
        top: -50%;
        right: -10%;
        width: 400px;
        height: 400px;
        background: radial-gradient(circle, rgba(0,240,255,0.12) 0%, transparent 70%);
        pointer-events: none;
    }

    .cta-section h2 {
        font-family: var(--font-heading);
        font-weight: 700;
        font-size: 1.8rem;
        color: var(--text-primary);
        margin-bottom: 12px;
        position: relative;
        z-index: 2;
    }

    .cta-section p {
        color: var(--text-secondary);
        font-size: 1.05rem;
        margin-bottom: 28px;
        max-width: 560px;
        position: relative;
        z-index: 2;
    }

    .cta-btn {
        display: inline-block;
        background: var(--gradient-accent);
        color: #fff;
        font-weight: 700;
        font-size: 1.05rem;
        padding: 14px 32px;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-glow);
        transition: all var(--transition-smooth);
        position: relative;
        z-index: 2;
    }

    .cta-btn:hover {
        box-shadow: var(--shadow-glow-strong);
        transform: translateY(-2px);
        color: #fff;
    }

    .cta-badges {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
        margin-top: 20px;
        position: relative;
        z-index: 2;
    }

    .cta-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(0,240,255,0.08);
        border: 1px solid var(--card-border);
        border-radius: 50px;
        padding: 6px 14px;
        font-size: 0.85rem;
        color: var(--text-secondary);
    }

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

    /* FAQ Section */
    .faq-list {
        max-width: 820px;
    }

    .faq-item {
        background: var(--card-bg);
        border: 1px solid var(--card-border);
        border-radius: var(--radius-md);
        margin-bottom: 12px;
        overflow: hidden;
        backdrop-filter: blur(10px);
        transition: all var(--transition-smooth);
    }

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

    .faq-question {
        width: 100%;
        text-align: left;
        background: none;
        border: none;
        padding: 18px 24px;
        font-weight: 600;
        font-size: 1rem;
        color: var(--text-primary);
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        transition: color var(--transition-fast);
    }

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

    .faq-question i {
        transition: transform var(--transition-smooth);
        color: var(--accent-cyan);
        font-size: 0.9rem;
    }

    .faq-answer {
        padding: 0 24px 20px;
        color: var(--text-secondary);
        font-size: 0.95rem;
        line-height: 1.6;
        display: none;
    }

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

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

    /* Footer */
    .site-footer {
        background: var(--secondary-bg);
        border-top: 1px solid rgba(0,240,255,0.12);
        padding: 48px 0 24px;
        margin-top: 40px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 32px;
        margin-bottom: 36px;
    }

    .footer-brand {
        font-family: var(--font-heading);
        font-weight: 700;
        font-size: 1.15rem;
        color: var(--text-primary);
        margin-bottom: 10px;
    }

    .footer-col h4 {
        font-weight: 600;
        font-size: 0.95rem;
        color: var(--text-primary);
        margin-bottom: 12px;
    }

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

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

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

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

    .footer-bottom {
        border-top: 1px solid rgba(0,240,255,0.1);
        padding-top: 20px;
        text-align: center;
        color: var(--text-muted);
        font-size: 0.85rem;
    }

    /* FAB */
    .fab-left {
        position: fixed;
        left: 20px;
        bottom: 90px;
        z-index: 80;
        width: 52px;
        height: 52px;
        border-radius: 50%;
        background: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
        border: 2px solid rgba(0,240,255,0.5);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1.3rem;
        cursor: pointer;
        box-shadow: 0 0 20px rgba(0,240,255,0.4);
        transition: all var(--transition-smooth);
        animation: floatFAB 3s ease-in-out infinite;
    }

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

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

    .fab-notification {
        position: absolute;
        top: 2px;
        right: 2px;
        width: 12px;
        height: 12px;
        background: #FF0000;
        border-radius: 50%;
        border: 2px solid #fff;
        animation: blink 1.2s infinite;
    }

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

    /* Responsive */
    @media (max-width: 1024px) {
        .banner-content h1 {
            font-size: 2.2rem;
        }
        .solution-block {
            grid-template-columns: 1fr;
            gap: 32px;
        }
    }

    @media (max-width: 768px) {
        .mobile-toggle {
            display: block;
        }
        .nav-list {
            position: fixed;
            top: 64px;
            left: 0;
            width: 100%;
            flex-direction: column;
            background: rgba(8, 9, 15, 0.96);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            padding: 20px 24px;
            gap: 8px;
            transform: translateY(-120%);
            opacity: 0;
            transition: all var(--transition-smooth);
            border-bottom: 1px solid rgba(0, 240, 255, 0.18);
            pointer-events: none;
        }
        .nav-list.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .banner-content h1 {
            font-size: 1.8rem;
        }
        .banner-stats {
            gap: 20px;
        }
        .page-banner {
            padding: 120px 0 60px;
        }
        .cta-section {
            padding: 32px 24px;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }
        .banner-content h1 {
            font-size: 1.5rem;
        }
        .banner-content p {
            font-size: 1rem;
        }
        .pain-grid {
            grid-template-columns: 1fr;
        }
        .testimonial-grid {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr;
        }
        .section-header h2 {
            font-size: 1.5rem;
        }
        .fab-left {
            left: 12px;
            bottom: 70px;
            width: 46px;
            height: 46px;
            font-size: 1.1rem;
        }
    }

/* roulang page: category1 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.75);
            --card-border: rgba(0, 240, 255, 0.18);
            --accent-cyan: #00F0FF;
            --accent-blue: #0052FF;
            --accent-glow: rgba(0, 240, 255, 0.35);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8892A6;
            --gradient-accent: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --gradient-dark: linear-gradient(180deg, #08090F 0%, #0D111E 100%);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.25);
            --shadow-glow-strong: 0 0 32px rgba(0, 240, 255, 0.45);
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.32s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at 28% 12%, rgba(0, 82, 255, 0.1) 0%, transparent 60%),
                radial-gradient(ellipse at 72% 85%, rgba(0, 240, 255, 0.06) 0%, transparent 55%),
                var(--gradient-dark);
            padding-top: 64px;
        }

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

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

        a:hover {
            color: #66F5FF;
        }

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

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

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

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: background var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .logo:hover {
            opacity: 0.88;
            -webkit-text-fill-color: var(--accent-cyan);
        }

        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            align-items: center;
            margin: 0;
            padding: 0;
        }

        .nav-list li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-list li a.btn-nav {
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.3);
        }

        .nav-list li a.btn-nav:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-1px);
            color: #fff;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* Hero Section */
        .hero-section {
            padding: 56px 0 40px;
            position: relative;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.7) 0%, rgba(13, 17, 30, 0.85) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
            text-align: left;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 50px;
            padding: 6px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .hero-badge i {
            font-size: 0.9rem;
        }

        .hero-content h1 {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

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

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 680px;
        }

        .hero-stats-row {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hero-stat-item i {
            font-size: 1.3rem;
            color: var(--accent-cyan);
        }

        .hero-stat-item strong {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
            text-decoration: none;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(0, 240, 255, 0.35);
            transition: all var(--transition-smooth);
            text-decoration: none;
            cursor: pointer;
        }

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

        /* Section Styling */
        .section-block {
            padding: 60px 0;
            position: relative;
        }

        .section-block.bg-alt {
            background: rgba(13, 17, 30, 0.4);
            border-top: 1px solid rgba(0, 240, 255, 0.06);
            border-bottom: 1px solid rgba(0, 240, 255, 0.06);
        }

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

        .section-label {
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            margin-bottom: 8px;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

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

        /* Pain Points Grid */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
        }

        .pain-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-smooth);
        }

        .pain-card:hover {
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .pain-card .pain-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.08);
            border-radius: 12px;
            font-size: 1.3rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .pain-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

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

        /* Solution Flow */
        .solution-steps {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .solution-step {
            display: flex;
            gap: 24px;
            align-items: flex-start;
        }

        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--gradient-accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .step-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .step-body p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Benefits Grid */
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }

        .benefit-card {
            background: rgba(0, 240, 255, 0.03);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-smooth);
        }

        .benefit-card:hover {
            background: rgba(0, 240, 255, 0.06);
            border-color: rgba(0, 240, 255, 0.3);
        }

        .benefit-card i {
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: 14px;
        }

        .benefit-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .benefit-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Testimonial Card */
        .testimonial-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-xl);
            padding: 36px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
        }

        .testimonial-card .quote-icon {
            font-size: 2.5rem;
            color: var(--accent-cyan);
            opacity: 0.5;
            margin-bottom: 12px;
        }

        .testimonial-card p {
            font-size: 1.1rem;
            font-style: italic;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .testimonial-card .author {
            font-weight: 700;
            color: var(--accent-cyan);
            font-size: 0.95rem;
        }

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

        /* CTA Section */
        .cta-section {
            padding: 60px 0;
            text-align: center;
            position: relative;
        }

        .cta-inner {
            background: var(--gradient-accent);
            border-radius: var(--radius-xl);
            padding: 48px 32px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-glow-strong);
        }

        .cta-inner::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            animation: ctaShimmer 6s linear infinite;
        }

        @keyframes ctaShimmer {
            0% {
                transform: rotate(0deg);
            }

            100% {
                transform: rotate(360deg);
            }
        }

        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-inner p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-inner .btn-cta-white {
            background: #fff;
            color: #0052FF;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition-smooth);
            position: relative;
            z-index: 1;
            border: none;
            cursor: pointer;
        }

        .cta-inner .btn-cta-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
        }

        /* FAQ */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
            user-select: none;
        }

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

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent-cyan);
            transition: transform var(--transition-smooth);
            font-size: 0.85rem;
        }

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

        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 48px 0 24px;
            color: var(--text-secondary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 28px;
            margin-bottom: 32px;
        }

        .footer-col .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
            margin-bottom: 8px;
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

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

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

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            padding-top: 20px;
            line-height: 1.6;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-radius: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-smooth);
            text-decoration: none;
            overflow: hidden;
        }

        .fab-floating::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50px;
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            z-index: -1;
            opacity: 0.6;
        }

        .fab-floating i {
            font-size: 1.4rem;
            color: #fff;
            z-index: 1;
            transition: all var(--transition-smooth);
        }

        .fab-floating:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.75);
            transform: scale(1.1);
        }

        .fab-floating:hover i {
            animation: neonFlicker 0.3s ease;
        }

        @keyframes neonFlicker {
            0%,
            100% {
                opacity: 1;
            }

            50% {
                opacity: 0.5;
            }
        }

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

        .fab-floating .fab-notification {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: #FF007F;
            border-radius: 50%;
            animation: blinkDot 1.2s ease-in-out infinite;
            z-index: 2;
        }

        @keyframes blinkDot {
            0%,
            100% {
                opacity: 1;
            }

            50% {
                opacity: 0.2;
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 2rem;
            }

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

            .solution-step {
                flex-direction: column;
                gap: 12px;
            }

            .step-number {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }

            .nav-list {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(22px);
                -webkit-backdrop-filter: blur(22px);
                padding: 20px 24px;
                gap: 8px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                border-bottom: 1px solid rgba(0, 240, 255, 0.18);
                pointer-events: none;
                z-index: 99;
            }

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

            .hero-content h1 {
                font-size: 1.7rem;
            }

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

            .hero-stats-row {
                gap: 18px;
            }

            .section-block {
                padding: 40px 0;
            }

            .testimonial-card {
                padding: 24px;
            }

            .cta-inner {
                padding: 36px 20px;
            }

            .cta-inner h2 {
                font-size: 1.5rem;
            }

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

            .fab-floating {
                left: 12px;
                bottom: 80px;
                width: 46px;
                height: 46px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 56px;
            }

            body {
                padding-top: 56px;
            }

            .nav-list {
                top: 56px;
            }

            .hero-section {
                padding: 40px 0 28px;
            }

            .hero-content h1 {
                font-size: 1.45rem;
            }

            .hero-badge {
                font-size: 0.78rem;
            }

            .hero-stats-row {
                flex-direction: column;
                gap: 12px;
            }

            .pain-grid,
            .benefits-grid {
                grid-template-columns: 1fr;
            }

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

            .cta-inner h2 {
                font-size: 1.3rem;
            }

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

            .fab-floating {
                left: 8px;
                bottom: 72px;
                width: 42px;
                height: 42px;
            }

            .fab-floating i {
                font-size: 1.2rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.75);
            --card-border: rgba(0, 240, 255, 0.18);
            --accent-cyan: #00F0FF;
            --accent-blue: #0052FF;
            --accent-glow: rgba(0, 240, 255, 0.35);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8892A6;
            --gradient-accent: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --gradient-dark: linear-gradient(180deg, #08090F 0%, #0D111E 100%);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.25);
            --shadow-glow-strong: 0 0 32px rgba(0, 240, 255, 0.45);
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.32s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-body);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at 28% 12%, rgba(0, 82, 255, 0.1) 0%, transparent 60%),
                radial-gradient(ellipse at 72% 85%, rgba(0, 240, 255, 0.06) 0%, transparent 55%),
                var(--gradient-dark);
            padding-top: 64px;
        }

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

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

        a:hover {
            color: #66F5FF;
        }

        button,
        .button {
            font-family: var(--font-body);
            cursor: pointer;
            transition: all var(--transition-smooth);
            outline: none;
        }

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

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: background var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .logo:hover {
            opacity: 0.88;
            color: var(--accent-cyan);
            -webkit-text-fill-color: var(--accent-cyan);
        }

        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            align-items: center;
            margin: 0;
            padding: 0;
        }

        .nav-list li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-list li a.btn-nav {
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.3);
        }

        .nav-list li a.btn-nav:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }

            .nav-list {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(22px);
                -webkit-backdrop-filter: blur(22px);
                padding: 20px 24px;
                gap: 8px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                border-bottom: 1px solid rgba(0, 240, 255, 0.18);
                pointer-events: none;
            }

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

            .nav-list li a {
                padding: 12px 16px;
                font-size: 1rem;
            }

            .nav-list li a.btn-nav {
                text-align: center;
                margin-top: 8px;
            }
            .container{
                padding:0 16px;
            }
        }

        /* Hero Section - Glass Morphism */
        .hero-section {
            position: relative;
            padding: 80px 0 60px;
            display: flex;
            align-items: center;
            min-height: 70vh;
            background-image: url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            isolation: isolate;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 9, 15, 0.85) 30%, rgba(13, 17, 30, 0.65) 100%);
            z-index: 1;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-glass-card {
            background: rgba(13, 17, 30, 0.6);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-xl);
            padding: 32px;
            box-shadow: var(--shadow-card), 0 0 20px rgba(0, 82, 255, 0.2);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 6px 14px;
            border-radius: 100px;
            border: 1px solid rgba(0, 240, 255, 0.3);
            margin-bottom: 20px;
        }

        .hero-badge i {
            font-size: 0.75rem;
            color: #00ff88;
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            color: var(--text-primary);
        }

        .hero-title span {
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 90%;
        }

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

        .btn-primary-glow {
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            box-shadow: var(--shadow-glow);
            font-size: 1rem;
            transition: all var(--transition-smooth);
        }

        .btn-primary-glow:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-secondary-glass {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(0, 240, 255, 0.25);
            color: var(--accent-cyan);
            font-weight: 600;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 1rem;
            transition: all var(--transition-smooth);
        }

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

        .hero-visual-card {
            background: rgba(13, 17, 30, 0.55);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .hero-visual-card img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .live-countdown-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(220, 20, 60, 0.9);
            backdrop-filter: blur(6px);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: 100px;
            display: flex;
            align-items: center;
            gap: 6px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            animation: pulse-badge 2s infinite;
        }

        @keyframes pulse-badge {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.75; }
        }

        .countdown-timer {
            display: flex;
            gap: 8px;
            justify-content: center;
            align-items: center;
            padding: 12px 0;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--accent-cyan);
        }

        .countdown-unit {
            background: rgba(0, 0, 0, 0.5);
            padding: 4px 10px;
            border-radius: 6px;
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        @media (max-width: 768px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                max-width: 100%;
            }
            .hero-actions {
                flex-direction: column;
            }
        }

        /* Section Styles */
        .section-padding {
            padding: 70px 0;
        }

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

        .section-label {
            display: inline-block;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 8px;
            border-left: 3px solid var(--accent-cyan);
            padding-left: 12px;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 650px;
        }

        /* Glass Card Grid */
        .glass-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-bottom: 40px;
        }

        .glass-card {
            background: var(--card-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }

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

        .glass-card-icon {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

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

        .glass-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Analysis List */
        .analysis-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
            margin-bottom: 50px;
        }

        .analysis-content {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .analysis-item {
            background: var(--card-bg);
            backdrop-filter: blur(8px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: var(--transition-fast);
        }

        .analysis-item:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.04);
        }

        .analysis-number {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            min-width: 36px;
        }

        .analysis-text h4 {
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

        .analysis-text p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin: 0;
        }

        .analysis-image-card {
            background: rgba(13, 17, 30, 0.5);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .analysis-image-card img {
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .img-caption {
            padding: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
            text-align: left;
        }

        @media (max-width: 768px) {
            .analysis-block {
                grid-template-columns: 1fr;
            }
        }

        /* CTA Section */
        .cta-glass-section {
            background: rgba(0, 82, 255, 0.08);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            margin: 40px 0;
        }

        .cta-title {
            font-weight: 700;
            font-size: 1.8rem;
            margin-bottom: 12px;
        }

        .cta-desc {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: var(--transition-fast);
        }

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

        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }

        .faq-answer {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            display: none;
            padding-top: 8px;
            border-top: 1px solid rgba(255,255,255,0.05);
            margin-top: 8px;
        }

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

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

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: 48px 0 24px;
            margin-top: 60px;
        }

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

        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

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

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

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

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

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .cta-glass-section {
                padding: 28px 20px;
            }
            .cta-title {
                font-size: 1.4rem;
            }
        }

        /* FAB Neon */
        .fab-neon {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            background: rgba(0, 0, 0, 0.75);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #00F0FF, #0052FF) 1;
            border-radius: 100px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #00F0FF;
            font-size: 1.4rem;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-smooth);
            cursor: pointer;
            animation: fab-idle 2.5s infinite;
        }

        @keyframes fab-idle {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 1; }
        }

        .fab-neon:hover {
            opacity: 1;
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
            transform: scale(1.1);
        }

/* roulang page: category4 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: rgba(13, 17, 30, 0.75);
            --card-border: rgba(0, 240, 255, 0.18);
            --accent-cyan: #00F0FF;
            --accent-blue: #0052FF;
            --accent-glow: rgba(0, 240, 255, 0.35);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8892A6;
            --gradient-accent: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --gradient-dark: linear-gradient(180deg, #08090F 0%, #0D111E 100%);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 18px rgba(0, 240, 255, 0.25);
            --shadow-glow-strong: 0 0 32px rgba(0, 240, 255, 0.45);
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.32s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at 28% 12%, rgba(0, 82, 255, 0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 72% 85%, rgba(0, 240, 255, 0.07) 0%, transparent 55%),
                var(--gradient-dark);
        }

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

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

        a:hover {
            color: #66F5FF;
        }

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

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

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

        .section-padding {
            padding: 80px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 12px;
            background: rgba(0, 240, 255, 0.1);
            padding: 6px 14px;
            border-radius: var(--radius-sm);
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .section-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 680px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: background var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .logo:hover {
            opacity: 0.88;
            color: var(--accent-cyan);
            -webkit-text-fill-color: var(--accent-cyan);
        }

        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            align-items: center;
            margin: 0;
            padding: 0;
        }

        .nav-list li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-list li a.btn-nav {
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.3);
        }

        .nav-list li a.btn-nav:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 8px;
        }

        /* Hero Section */
        .page-hero {
            padding: 120px 0 70px;
            background-image: linear-gradient(0deg, rgba(8, 9, 15, 0.9) 0%, rgba(8, 9, 15, 0.6) 100%),
                url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            position: relative;
        }

        .page-hero .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .page-hero .hero-text h1 {
            font-family: var(--font-heading);
            font-size: 2.9rem;
            font-weight: 900;
            line-height: 1.18;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: -0.025em;
            text-shadow: 0 2px 24px rgba(0, 0, 0, 0.6);
        }

        .page-hero .hero-text .hero-subtitle {
            font-size: 1.18rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
            text-decoration: none;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            border: 1.5px solid rgba(0, 240, 255, 0.45);
            transition: all var(--transition-smooth);
            text-decoration: none;
            margin-left: 14px;
        }

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

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

        .hero-card {
            background: var(--card-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-xl);
            padding: 32px;
            box-shadow: var(--shadow-card), var(--shadow-glow);
            width: 100%;
            max-width: 480px;
        }

        .hero-card .stat-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-card .stat-row:last-child {
            border-bottom: none;
        }

        .hero-card .stat-label {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .hero-card .stat-value {
            color: var(--accent-cyan);
            font-weight: 800;
            font-size: 1.2rem;
        }

        /* Cards Grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
            margin-top: 40px;
        }

        .feature-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: 32px 28px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gradient-accent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow-strong), 0 12px 36px rgba(0, 0, 0, 0.5);
            border-color: rgba(0, 240, 255, 0.4);
        }

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

        .feature-card .card-icon {
            font-size: 2.4rem;
            color: var(--accent-cyan);
            margin-bottom: 18px;
            display: inline-block;
        }

        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }

        .feature-card p {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Process Steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            counter-reset: step-counter;
            margin-top: 40px;
        }

        .step-item {
            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: 28px 24px;
            position: relative;
            counter-increment: step-counter;
            transition: all var(--transition-smooth);
        }

        .step-item::after {
            content: counter(step-counter);
            position: absolute;
            top: -16px;
            right: 20px;
            font-family: var(--font-heading);
            font-size: 3.5rem;
            font-weight: 900;
            color: rgba(0, 240, 255, 0.15);
            line-height: 1;
            pointer-events: none;
        }

        .step-item h4 {
            font-weight: 700;
            font-size: 1.1rem;
            color: #fff;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 0.92rem;
            color: var(--text-secondary);
        }

        .step-item:hover {
            border-color: rgba(0, 240, 255, 0.45);
            box-shadow: var(--shadow-glow);
        }

        /* Comparison Table */
        .comparison-table-wrap {
            overflow-x: auto;
            margin-top: 40px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--card-border);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
            font-size: 0.95rem;
        }

        .comparison-table th {
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            font-weight: 700;
            padding: 16px 20px;
            text-align: left;
            border-bottom: 2px solid var(--card-border);
        }

        .comparison-table td {
            padding: 14px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
        }

        .comparison-table tr:hover td {
            background: rgba(0, 240, 255, 0.04);
        }

        .badge-highlight {
            display: inline-block;
            background: var(--gradient-accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin-top: 36px;
        }

        .faq-item {
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            padding: 20px 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            border: none;
        }

        .faq-question i {
            color: var(--accent-cyan);
            transition: transform var(--transition-fast);
            font-size: 1.1rem;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            background: rgba(0, 0, 0, 0.2);
        }

        .faq-answer p {
            padding: 0 28px 20px;
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.96rem;
        }

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

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

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

        /* CTA Section */
        .cta-section {
            background: var(--secondary-bg);
            border-top: 1px solid var(--card-border);
            border-bottom: 1px solid var(--card-border);
            text-align: center;
            padding: 70px 0;
        }

        .cta-section .section-title {
            margin-bottom: 10px;
        }

        .cta-section .btn-primary {
            margin-top: 24px;
        }

        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.95);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 56px 0 28px;
            color: var(--text-secondary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.2rem;
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

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

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

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

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(13, 17, 30, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
            transition: all var(--transition-smooth);
            color: var(--accent-cyan);
            font-size: 1.8rem;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, #0052FF, #00F0FF, #FF007F);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .page-hero .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .hero-visual {
                order: 2;
            }

            .hero-text {
                order: 1;
            }

            .hero-card {
                margin: 0 auto;
            }

            .section-title {
                font-size: 2rem;
            }

            .page-hero .hero-text h1 {
                font-size: 2.3rem;
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }

            .nav-list {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(8, 9, 15, 0.96);
                backdrop-filter: blur(22px);
                -webkit-backdrop-filter: blur(22px);
                padding: 20px 24px;
                gap: 8px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                border-bottom: 1px solid rgba(0, 240, 255, 0.18);
                pointer-events: none;
                z-index: 99;
            }

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

            .section-padding {
                padding: 56px 0;
            }

            .section-title {
                font-size: 1.7rem;
            }

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

            .btn-outline {
                margin-left: 8px;
                padding: 12px 22px;
                font-size: 0.9rem;
            }

            .btn-primary {
                padding: 12px 24px;
                font-size: 0.95rem;
            }

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

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

            .fab-left {
                width: 48px;
                height: 48px;
                left: 16px;
                bottom: 80px;
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .page-hero {
                padding: 100px 0 48px;
            }

            .page-hero .hero-text h1 {
                font-size: 1.7rem;
            }

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

            .hero-card {
                padding: 20px;
            }

            .feature-card {
                padding: 24px 18px;
            }
        }