/* roulang page: index */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --border-subtle: #2A2A2A;
            --shadow-lava: 0 4px 24px rgba(255, 69, 0, 0.3);
            --shadow-fire: 0 4px 20px rgba(255, 0, 0, 0.25);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

        /* Header & Navigation */
        .site-header {
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: var(--transition-base);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            max-width: 1280px;
            margin: 0 auto;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            transition: var(--transition-base);
            line-height: 1.3;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 4px 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lava);
            transition: width 0.3s ease;
        }

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

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

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

        .btn-login {
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            color: white;
            border: none;
            padding: 8px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
            box-shadow: var(--shadow-lava);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 28px rgba(255, 69, 0, 0.45);
        }

        /* Mobile Menu */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* Hero Section - White Paper Lead Gen */
        .hero {
            padding: 120px 0 80px;
            position: relative;
            background: linear-gradient(180deg, rgba(11,11,11,1) 0%, rgba(22,22,22,1) 60%, rgba(11,11,11,1) 100%);
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            min-height: 85vh;
            display: flex;
            align-items: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 30% 50%, rgba(255,69,0,0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content h1 {
            font-size: clamp(2.4rem, 5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 24px;
            letter-spacing: -0.03em;
            background: linear-gradient(135deg, #FFFFFF 0%, #E0E0E0 100%);
            -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: 36px;
            max-width: 520px;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-lava), #E03D00);
            color: white;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
            box-shadow: var(--shadow-lava);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(255, 69, 0, 0.5);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--border-subtle);
            color: var(--text-primary);
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
        }

        .btn-outline:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }

        .hero-visual {
            background: linear-gradient(145deg, rgba(22,22,22,0.9), rgba(42,42,42,0.7));
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            backdrop-filter: blur(20px);
            box-shadow: 0 20px 60px rgba(0,0,0,0.5);
        }

        .hero-visual .doc-cover {
            width: 100%;
            aspect-ratio: 3/4;
            background: linear-gradient(135deg, var(--accent-lava), #8B0000);
            border-radius: var(--radius-sm);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 4rem;
            color: white;
            position: relative;
            overflow: hidden;
        }

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

        .doc-toc {
            list-style: none;
            padding: 0;
        }

        .doc-toc li {
            color: var(--text-secondary);
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .doc-toc li i {
            color: var(--accent-lava);
        }

        /* Section Spacing */
        section {
            padding: 80px 0;
        }

        .section-label {
            display: inline-block;
            color: var(--accent-lava);
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .section-desc {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.7;
            max-width: 680px;
            margin-bottom: 40px;
        }

        /* Feature Chapters */
        .chapters-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .chapter-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .chapter-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-lava), var(--accent-fire));
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }

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

        .chapter-card:hover {
            border-color: rgba(255,69,0,0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lava);
        }

        .chapter-icon {
            width: 48px;
            height: 48px;
            background: rgba(255,69,0,0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.4rem;
            color: var(--accent-lava);
        }

        .chapter-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .testimonial-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: var(--transition-base);
        }

        .testimonial-card:hover {
            border-color: rgba(255,69,0,0.3);
        }

        .testimonial-rating {
            color: var(--accent-lava);
            margin-bottom: 12px;
        }

        .testimonial-text {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            font-style: italic;
            margin-bottom: 16px;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .author-name {
            font-weight: 600;
            font-size: 0.95rem;
        }

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

        /* Collection Directory */
        .collection-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .collection-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .collection-card:hover {
            border-color: rgba(255,69,0,0.4);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lava);
        }

        .collection-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .collection-body {
            padding: 20px;
        }

        .collection-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .collection-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
            margin-bottom: 14px;
        }

        .collection-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-lava);
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* Trust Badges */
        .trust-strip {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 48px 0;
        }

        .trust-icons {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 32px;
            text-align: center;
        }

        .trust-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .trust-item i {
            font-size: 2.2rem;
            color: var(--accent-lava);
            margin-bottom: 4px;
        }

        .trust-item span {
            font-weight: 600;
            font-size: 0.95rem;
        }

        .trust-item small {
            color: var(--text-secondary);
            font-size: 0.8rem;
        }

        /* News Feed */
        .news-feed {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }

        .news-item:hover {
            padding-left: 8px;
        }

        .news-item-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-item-content h4 a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color 0.2s;
        }

        .news-item-content h4 a:hover {
            color: var(--accent-lava);
        }

        .news-item-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        .news-meta {
            display: flex;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        .news-sidebar {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
        }

        .news-sidebar h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent-lava);
        }

        .sidebar-list {
            list-style: none;
        }

        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255,255,255,0.04);
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

        .sidebar-list li a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s;
        }

        .sidebar-list li a:hover {
            color: var(--accent-lava);
        }

        /* Safety Section */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .safety-card {
            text-align: center;
            padding: 28px 16px;
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }

        .safety-card:hover {
            border-color: rgba(255,69,0,0.3);
        }

        .safety-card i {
            font-size: 2rem;
            color: var(--accent-lava);
            margin-bottom: 12px;
        }

        .safety-card h5 {
            font-weight: 700;
            margin-bottom: 6px;
        }

        .safety-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        /* Trial CTA */
        .trial-cta {
            background: linear-gradient(135deg, rgba(255,69,0,0.08), rgba(22,22,22,1));
            border: 1px solid rgba(255,69,0,0.25);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
        }

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

        .trial-cta p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .trial-form {
            display: flex;
            gap: 12px;
            max-width: 460px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .trial-form input {
            flex: 1;
            min-width: 220px;
            padding: 14px 18px;
            background: var(--charcoal);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            color: white;
            font-size: 0.95rem;
            transition: var(--transition-base);
        }

        .trial-form input:focus {
            outline: none;
            border-color: var(--accent-lava);
            box-shadow: 0 0 0 3px rgba(255,69,0,0.15);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: var(--charcoal);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-weight: 700;
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .footer-col a, .footer-col p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            text-decoration: none;
            display: block;
            margin-bottom: 8px;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        .footer-bottom a {
            color: var(--accent-lava);
            text-decoration: none;
        }

        /* No updates state */
        .no-updates {
            padding: 40px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 1rem;
            border: 1px dashed var(--border-subtle);
            border-radius: var(--radius-lg);
            background: var(--bg-secondary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .chapters-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .collection-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .news-feed {
                grid-template-columns: 1fr;
            }
            .safety-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-primary);
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--border-subtle);
                gap: 16px;
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-cta {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .chapters-grid {
                grid-template-columns: 1fr;
            }
            .collection-grid {
                grid-template-columns: 1fr;
            }
            .safety-grid {
                grid-template-columns: 1fr;
            }
            .trust-icons {
                flex-direction: column;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            section {
                padding: 56px 0;
            }
            .hero {
                padding: 100px 0 48px;
                min-height: auto;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary, .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .trial-form {
                flex-direction: column;
            }
            .trial-form input {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --border-subtle: #2A2A2A;
            --shadow-lava: 0 4px 24px rgba(255, 69, 0, 0.3);
            --shadow-fire: 0 4px 20px rgba(255, 0, 0, 0.25);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: var(--transition-base);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            max-width: 1280px;
            margin: 0 auto;
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            transition: var(--transition-base);
            line-height: 1.3;
        }
        .logo:hover {
            color: var(--accent-lava);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 4px 0;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lava);
            transition: width 0.3s ease;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
        }
        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            color: white;
            border: none;
            padding: 8px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
            box-shadow: var(--shadow-lava);
        }
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 28px rgba(255, 69, 0, 0.45);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }
        .article-banner {
            padding: 130px 0 60px;
            background: linear-gradient(180deg, rgba(11,11,11,1) 0%, rgba(22,22,22,1) 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            min-height: 40vh;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 70% 50%, rgba(255,69,0,0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .banner-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }
        .article-category {
            display: inline-block;
            background: rgba(255, 69, 0, 0.15);
            color: var(--accent-lava);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 69, 0, 0.3);
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-body {
            padding: 60px 0;
            background: var(--bg-primary);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-main {
            background: var(--bg-secondary);
            padding: 48px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
        }
        .article-main h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 24px;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }
        .article-main h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--text-primary);
            border-left: 4px solid var(--accent-lava);
            padding-left: 16px;
        }
        .article-main h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--text-primary);
        }
        .article-main p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
            font-size: 1.05rem;
        }
        .article-main ul,
        .article-main ol {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
            padding-left: 28px;
            font-size: 1.05rem;
        }
        .article-main li {
            margin-bottom: 10px;
        }
        .article-main blockquote {
            border-left: 4px solid var(--accent-lava);
            background: rgba(255, 69, 0, 0.05);
            padding: 20px 24px;
            margin: 30px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-main img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin: 24px 0;
        }
        .sidebar-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            margin-bottom: 24px;
            position: sticky;
            top: 100px;
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-post {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-subtle);
            text-decoration: none;
            color: var(--text-secondary);
            transition: var(--transition-base);
        }
        .sidebar-post:hover {
            color: var(--accent-lava);
        }
        .sidebar-post:last-child {
            border-bottom: none;
        }
        .sidebar-post img {
            width: 70px;
            height: 70px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .sidebar-post-info h5 {
            font-size: 0.9rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-primary);
        }
        .sidebar-post-info span {
            font-size: 0.8rem;
            color: var(--text-secondary);
            display: block;
            margin-top: 4px;
        }
        .cta-banner {
            background: linear-gradient(135deg, rgba(255, 69, 0, 0.08), rgba(255, 0, 0, 0.05));
            border: 1px solid rgba(255, 69, 0, 0.2);
            border-radius: var(--radius-lg);
            padding: 36px;
            text-align: center;
        }
        .cta-banner h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .cta-banner p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .btn-cta {
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            color: white;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            display: inline-block;
            transition: var(--transition-base);
            box-shadow: var(--shadow-lava);
            border: none;
            cursor: pointer;
        }
        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(255, 69, 0, 0.5);
        }
        .not-found-state {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
        }
        .not-found-state h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .not-found-state p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .footer-col p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            margin-bottom: 10px;
            transition: var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--accent-lava);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }
        .footer-bottom a {
            color: var(--accent-lava);
            text-decoration: none;
        }
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px rgba(255, 69, 0, 0.5);
            transition: var(--transition-base);
            animation: floatFAB 3s ease-in-out infinite;
        }
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(255, 69, 0, 0.7);
        }
        @keyframes floatFAB {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .sidebar-card {
                position: static;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(11, 11, 11, 0.98);
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--border-subtle);
                gap: 20px;
            }
            .nav-links.active {
                display: flex;
            }
            .article-main {
                padding: 24px;
            }
            .article-main h1 {
                font-size: 1.8rem;
            }
            .article-banner {
                padding: 100px 0 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .nav-cta .btn-login {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .nav-cta .btn-signup {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .logo {
                font-size: 1.1rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --border-subtle: #2A2A2A;
            --shadow-lava: 0 4px 24px rgba(255, 69, 0, 0.3);
            --shadow-fire: 0 4px 20px rgba(255, 0, 0, 0.25);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: var(--transition-base);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            max-width: 1280px;
            margin: 0 auto;
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            transition: var(--transition-base);
            line-height: 1.3;
        }
        .logo:hover {
            color: var(--accent-lava);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 4px 0;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lava);
            transition: width 0.3s ease;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
        }
        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            color: white;
            border: none;
            padding: 8px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
            box-shadow: var(--shadow-lava);
        }
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 28px rgba(255, 69, 0, 0.45);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-lava), #E03D00);
            color: white;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
            box-shadow: var(--shadow-lava);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 69, 0, 0.5);
        }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
            cursor: pointer;
        }
        .btn-secondary:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
            background: rgba(255, 69, 0, 0.05);
        }
        .hero {
            padding: 140px 0 80px;
            position: relative;
            background: linear-gradient(180deg, rgba(11,11,11,1) 0%, rgba(22,22,22,1) 60%, rgba(11,11,11,1) 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            min-height: 80vh;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 70% 40%, rgba(255,69,0,0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content h1 {
            font-size: clamp(2.4rem, 5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 24px;
            letter-spacing: -0.03em;
            background: linear-gradient(135deg, #FFFFFF 0%, #E0E0E0 100%);
            -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: 36px;
            max-width: 520px;
        }
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .progress-ring-container {
            position: relative;
            width: 260px;
            height: 260px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .progress-ring {
            width: 100%;
            height: 100%;
            position: absolute;
            top: 0;
            left: 0;
        }
        .ring-bg {
            fill: none;
            stroke: var(--border-subtle);
            stroke-width: 8;
        }
        .ring-progress {
            fill: none;
            stroke: var(--accent-lava);
            stroke-width: 8;
            stroke-linecap: round;
            transition: stroke-dashoffset 1s ease;
        }
        .progress-text {
            text-align: center;
            z-index: 2;
        }
        .progress-percent {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1;
        }
        .progress-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 8px;
        }
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background-color: var(--bg-secondary);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
            margin-top: 48px;
        }
        .feature-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-lava), var(--accent-fire));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }
        .feature-card:hover::before {
            transform: scaleX(1);
        }
        .feature-card:hover {
            border-color: var(--accent-lava);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lava);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            background: rgba(255, 69, 0, 0.1);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--accent-lava);
            font-size: 1.4rem;
        }
        .feature-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .feature-card p {
            color: var(--text-secondary);
            line-height: 1.6;
            font-size: 0.95rem;
        }
        .flow-section {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 48px;
            margin-top: 48px;
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .flow-step {
            text-align: left;
            position: relative;
            padding: 24px;
            background: var(--bg-primary);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }
        .flow-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-lava);
            opacity: 0.3;
            line-height: 1;
            margin-bottom: 12px;
        }
        .flow-step h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .flow-step p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 40px;
        }
        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--accent-lava);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            text-align: left;
            gap: 16px;
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--accent-lava);
            font-size: 1.2rem;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }
        .cta-section {
            background: linear-gradient(135deg, rgba(255,69,0,0.08) 0%, rgba(255,0,0,0.05) 100%);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: left;
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255,69,0,0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 32px;
            position: relative;
            z-index: 1;
        }
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            margin-bottom: 10px;
            transition: var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--accent-lava);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }
        .footer-bottom a {
            color: var(--accent-lava);
            text-decoration: none;
        }
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
        }
        .fab-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            color: white;
            border: none;
            cursor: pointer;
            font-size: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lava);
            transition: var(--transition-base);
            position: relative;
        }
        .fab-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255, 69, 0, 0.55);
        }
        .fab-btn .notification-dot {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: #FF0000;
            border-radius: 50%;
            animation: pulse-dot 1.5s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.3); }
        }
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(11, 11, 11, 0.98);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border-subtle);
            }
            .nav-links.active {
                display: flex;
            }
            .nav-cta {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .section {
                padding: 60px 0;
            }
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero {
                padding: 120px 0 60px;
                min-height: auto;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --border-subtle: #2A2A2A;
            --shadow-lava: 0 4px 24px rgba(255, 69, 0, 0.3);
            --shadow-fire: 0 4px 20px rgba(255, 0, 0, 0.25);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        * {
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }
        
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        
        a {
            color: inherit;
            text-decoration: none;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        .site-header {
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: var(--transition-base);
        }
        
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            max-width: 1280px;
            margin: 0 auto;
        }
        
        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            transition: var(--transition-base);
            line-height: 1.3;
        }
        
        .logo:hover {
            color: var(--accent-lava);
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 4px 0;
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lava);
            transition: width 0.3s ease;
        }
        
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
        }
        
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn-login {
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
        }
        
        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            color: white;
            border: none;
            padding: 8px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
            box-shadow: var(--shadow-lava);
        }
        
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 28px rgba(255, 69, 0, 0.45);
        }
        
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        .page-hero {
            background: linear-gradient(180deg, rgba(11, 11, 11, 1) 0%, rgba(22, 22, 22, 1) 60%, rgba(11, 11, 11, 1) 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 140px 0 80px;
            position: relative;
        }
        
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 70% 50%, rgba(255, 69, 0, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        
        .page-hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        
        .page-hero-content h1 {
            font-size: clamp(2.2rem, 4.5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            letter-spacing: -0.03em;
        }
        
        .page-hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 520px;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-lava), #E03D00);
            color: white;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
            box-shadow: var(--shadow-lava);
            border: none;
            cursor: pointer;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(255, 69, 0, 0.5);
        }
        
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--accent-lava);
            padding: 12px 30px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
        }
        
        .btn-outline:hover {
            background: var(--accent-lava);
            color: white;
            transform: translateY(-2px);
        }
        
        .coupon-highlight {
            background: linear-gradient(135deg, rgba(255, 69, 0, 0.12), rgba(255, 0, 0, 0.08));
            border: 2px dashed var(--accent-lava);
            border-radius: var(--radius-lg);
            padding: 32px;
            text-align: center;
            backdrop-filter: blur(8px);
        }
        
        .coupon-label {
            font-size: 0.85rem;
            color: var(--accent-lava);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            font-weight: 700;
            margin-bottom: 12px;
        }
        
        .coupon-title {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 8px;
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .coupon-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }
        
        .section {
            padding: 80px 0;
        }
        
        .section-header {
            margin-bottom: 60px;
            max-width: 720px;
        }
        
        .section-header h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        
        .section-header p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.7;
        }
        
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 32px;
        }
        
        .benefit-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        
        .benefit-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-lava), var(--accent-fire));
            transform: scaleY(0);
            transition: transform 0.4s ease;
        }
        
        .benefit-card:hover::before {
            transform: scaleY(1);
        }
        
        .benefit-card:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-lava);
            transform: translateY(-4px);
        }
        
        .benefit-icon {
            font-size: 2.2rem;
            color: var(--accent-lava);
            margin-bottom: 20px;
        }
        
        .benefit-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        
        .benefit-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        
        .tech-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        
        .tech-image-wrapper {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        
        .tech-image-wrapper img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        
        .tech-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .tech-list li {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-subtle);
        }
        
        .tech-list li:last-child {
            border-bottom: none;
        }
        
        .tech-list-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, rgba(255, 69, 0, 0.15), rgba(255, 0, 0, 0.1));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--accent-lava);
            font-size: 1.2rem;
        }
        
        .tech-list-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        
        .tech-list-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
            margin: 0;
        }
        
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 24px;
        }
        
        .process-step {
            text-align: left;
            padding: 28px;
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            position: relative;
        }
        
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            border-radius: 50%;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        
        .process-step h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        
        .process-step p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
            margin: 0;
        }
        
        .faq-section {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            border-bottom: 1px solid var(--border-subtle);
            padding: 24px 0;
        }
        
        .faq-question {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition-base);
        }
        
        .faq-question:hover {
            color: var(--accent-lava);
        }
        
        .faq-answer {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        
        .cta-section {
            background: linear-gradient(135deg, rgba(255, 69, 0, 0.08), rgba(255, 0, 0, 0.04));
            border-top: 1px solid var(--border-subtle);
        }
        
        .cta-content {
            text-align: left;
            max-width: 640px;
        }
        
        .cta-content h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 20px;
        }
        
        .cta-content p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        
        .cta-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        
        .footer-col p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 12px;
            transition: var(--transition-base);
            text-decoration: none;
        }
        
        .footer-col a:hover {
            color: var(--accent-lava);
        }
        
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            text-align: center;
        }
        
        .footer-bottom p {
            color: var(--text-secondary);
            font-size: 0.85rem;
            margin: 0;
        }
        
        .footer-bottom a {
            color: var(--accent-lava);
            text-decoration: none;
            transition: var(--transition-base);
        }
        
        .footer-bottom a:hover {
            text-decoration: underline;
        }
        
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
        }
        
        .fab-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(11, 11, 11, 0.85), rgba(22, 22, 22, 0.9));
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-lava);
            box-shadow: 0 0 20px rgba(255, 69, 0, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
            opacity: 0.75;
            animation: floatVertical 3s ease-in-out infinite;
        }
        
        .fab-btn:hover {
            transform: scale(1.15);
            opacity: 1;
            box-shadow: 0 0 32px rgba(255, 69, 0, 0.7);
            border-color: var(--accent-fire);
        }
        
        .fab-btn:active {
            transform: scale(0.92);
        }
        
        .fab-btn i {
            font-size: 1.4rem;
            color: var(--accent-lava);
        }
        
        @keyframes floatVertical {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }
        
        @media (max-width: 1024px) {
            .page-hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .tech-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(11, 11, 11, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border-subtle);
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-cta .btn-login {
                display: inline-block;
            }
            .page-hero {
                padding: 120px 0 60px;
            }
            .section {
                padding: 60px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-buttons {
                flex-direction: column;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero-grid {
                gap: 24px;
            }
            .benefits-grid,
            .process-steps {
                grid-template-columns: 1fr;
            }
            .nav-cta {
                gap: 8px;
            }
            .btn-login {
                padding: 6px 14px;
                font-size: 0.82rem;
            }
            .btn-signup {
                padding: 6px 16px;
                font-size: 0.82rem;
            }
            .logo {
                font-size: 1rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --border-subtle: #2A2A2A;
            --shadow-lava: 0 4px 24px rgba(255, 69, 0, 0.3);
            --shadow-fire: 0 4px 20px rgba(255, 0, 0, 0.25);
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

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

        a:hover {
            color: #FF5722;
        }

        .site-header {
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: var(--transition-base);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            max-width: 1280px;
            margin: 0 auto;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            transition: var(--transition-base);
            line-height: 1.3;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
            padding: 4px 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lava);
            transition: width 0.3s ease;
        }

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

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

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

        .btn-login {
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            color: white;
            border: none;
            padding: 8px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
            box-shadow: var(--shadow-lava);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 28px rgba(255, 69, 0, 0.45);
        }

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

        .page-hero {
            padding: 120px 0 80px;
            position: relative;
            background: linear-gradient(180deg, rgba(11,11,11,1) 0%, rgba(22,22,22,1) 60%, rgba(11,11,11,1) 100%);
            background-image: url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            min-height: 60vh;
            display: flex;
            align-items: center;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 70% 40%, rgba(255,69,0,0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content h1 {
            font-size: clamp(2.4rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 24px;
            letter-spacing: -0.03em;
            color: var(--text-primary);
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 520px;
        }

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

        .hero-visual img {
            max-width: 90%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-fire);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-lava), #E03D00);
            color: white;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: var(--shadow-lava);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(255, 69, 0, 0.5);
            color: white;
        }

        .section {
            padding: 80px 0;
        }

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

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.6;
            margin-bottom: 48px;
        }

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

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .strategy-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-lava), var(--accent-fire));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .strategy-card:hover {
            border-color: rgba(255,69,0,0.4);
            transform: translateY(-6px);
            box-shadow: var(--shadow-lava);
        }

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

        .strategy-card .card-icon {
            font-size: 2.2rem;
            color: var(--accent-lava);
            margin-bottom: 20px;
            display: block;
        }

        .strategy-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

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

        .process-step {
            display: flex;
            gap: 24px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border-subtle);
            align-items: flex-start;
        }

        .process-step:last-child {
            border-bottom: none;
        }

        .step-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent-lava);
            line-height: 1;
            opacity: 0.8;
            min-width: 70px;
        }

        .step-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-content p {
            color: var(--text-secondary);
            line-height: 1.7;
        }

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

        .faq-item {
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            background: var(--bg-secondary);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(255,69,0,0.3);
        }

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

        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--accent-lava);
        }

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

        .faq-answer {
            padding: 0 28px 20px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

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

        .cta-section {
            background: linear-gradient(135deg, rgba(255,69,0,0.1), rgba(255,0,0,0.08));
            border: 1px solid rgba(255,69,0,0.25);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            font-size: 1.1rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .stat-badge {
            display: inline-flex;
            align-items: baseline;
            gap: 8px;
            background: rgba(255,69,0,0.15);
            border: 1px solid rgba(255,69,0,0.4);
            border-radius: 20px;
            padding: 6px 16px;
            font-size: 0.85rem;
            color: var(--accent-lava);
            margin-bottom: 12px;
        }

        .highlight-text {
            color: var(--accent-lava);
            font-weight: 700;
        }

        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 64px 0 32px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .footer-col p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 12px;
            transition: var(--transition-base);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        .footer-bottom a {
            color: var(--accent-lava);
        }

        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 9999px;
            background: rgba(11, 11, 11, 0.8);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-lava);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lava);
            font-size: 1.4rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 20px rgba(255, 69, 0, 0.4);
            animation: float-slow 3s ease-in-out infinite;
        }

        .fab-left:hover {
            transform: scale(1.15);
            box-shadow: 0 0 30px rgba(255, 69, 0, 0.7);
            background: rgba(11, 11, 11, 1);
        }

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

        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-visual {
                order: -1;
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(11, 11, 11, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--border-subtle);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-cta {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .grid-3, .grid-4 {
                grid-template-columns: 1fr;
            }
            .process-step {
                flex-direction: column;
                gap: 12px;
            }
            .page-hero {
                padding: 100px 0 60px;
            }
        }