/* roulang page: index */
:root {
            --bg-deep: #0B1A30;
            --bg-darker: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --border-soft: rgba(0, 240, 255, 0.18);
            --card-bg: rgba(15, 12, 32, 0.72);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.25);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', 'Roboto', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-darker) 100%);
            color: var(--text-white);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 26, 48, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-soft);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }
        .logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            color: var(--text-white);
            text-decoration: none;
            line-height: 1.3;
            max-width: 280px;
        }
        .logo-text span {
            color: var(--accent-cyan);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            color: var(--text-silver);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.2s;
            white-space: nowrap;
        }
        .nav-links a:hover, .nav-links a.active {
            color: var(--accent-cyan);
        }
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-login {
            background: transparent;
            border: none;
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            padding: 8px 16px;
            transition: color 0.2s;
        }
        .btn-login:hover {
            color: var(--accent-cyan);
        }
        .btn-signup {
            background: linear-gradient(135deg, #CCFF00 0%, #00F0FF 100%);
            color: #0F0C20;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 22px;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 0 18px rgba(204, 255, 0, 0.35);
            white-space: nowrap;
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
        }
        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-size: 1.6rem;
            cursor: pointer;
        }
        /* Hero */
        .hero-section {
            position: relative;
            padding: 80px 0 100px;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            min-height: 620px;
            display: flex;
            align-items: center;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15,12,32,0.92) 20%, rgba(11,26,48,0.65) 70%, rgba(15,12,32,0.5) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(204, 255, 0, 0.18);
            color: var(--accent-lime);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            border: 1px solid rgba(204, 255, 0, 0.4);
            margin-bottom: 24px;
            letter-spacing: 0.04em;
        }
        .hero-content h1 {
            font-size: 3.2rem;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -0.01em;
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, #CCFF00, #00F0FF);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-silver);
            margin-bottom: 36px;
            max-width: 560px;
            line-height: 1.7;
        }
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .btn-primary {
            background: linear-gradient(135deg, #00F0FF 0%, #CCFF00 100%);
            color: #0F0C20;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 50px;
            text-decoration: none;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 38px rgba(204, 255, 0, 0.55);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 28px;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.2s;
        }
        .btn-outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        .hero-trust {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            color: var(--text-silver);
            font-size: 0.9rem;
        }
        .hero-trust i {
            color: var(--accent-cyan);
            margin-right: 6px;
        }
        /* Sections */
        .section {
            padding: 72px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .section-sub {
            color: var(--text-silver);
            font-size: 1.05rem;
            max-width: 680px;
            margin-bottom: 40px;
            line-height: 1.7;
        }
        .section-label {
            display: inline-block;
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        /* Countdown strip */
        .countdown-strip {
            background: linear-gradient(90deg, rgba(204,255,0,0.12), rgba(0,240,255,0.12));
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
            padding: 18px 0;
        }
        .countdown-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .countdown-text {
            font-weight: 600;
            color: var(--accent-lime);
        }
        .countdown-timer {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .countdown-timer .time-box {
            background: rgba(0,0,0,0.45);
            border: 1px solid rgba(204,255,0,0.3);
            border-radius: 8px;
            padding: 6px 14px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-white);
        }
        .btn-join-now {
            background: #CCFF00;
            color: #0F0C20;
            font-weight: 700;
            padding: 10px 26px;
            border-radius: 50px;
            text-decoration: none;
            transition: background 0.2s;
        }
        .btn-join-now:hover {
            background: #b8e600;
        }
        /* Story section */
        .story-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .story-image {
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0,0,0,0.5);
        }
        .story-image img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }
        /* Featured cards */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .featured-card {
            background: var(--card-bg);
            border: 1px solid var(--border-soft);
            border-radius: 20px;
            overflow: hidden;
            transition: transform 0.25s, box-shadow 0.25s;
        }
        .featured-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
        }
        .featured-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .featured-card-body {
            padding: 24px;
        }
        .featured-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .featured-card-body p {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: rgba(255,255,255,0.03);
            border-left: 3px solid var(--accent-cyan);
            padding: 24px;
            border-radius: 0 16px 16px 0;
        }
        .testimonial-card p {
            color: var(--text-silver);
            font-size: 0.98rem;
            line-height: 1.7;
            font-style: italic;
        }
        .testimonial-author {
            margin-top: 16px;
            font-weight: 600;
            color: var(--accent-lime);
            font-style: normal;
        }
        /* News list */
        .news-layout {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr;
            gap: 40px;
        }
        .news-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-list li a {
            display: flex;
            align-items: center;
            gap: 16px;
            color: var(--text-white);
            text-decoration: none;
            padding: 18px 20px;
            background: rgba(255,255,255,0.03);
            border-radius: 14px;
            transition: background 0.2s, transform 0.2s;
            border: 1px solid transparent;
        }
        .news-list li a:hover {
            background: rgba(0, 240, 255, 0.06);
            border-color: var(--border-soft);
            transform: translateX(4px);
        }
        .news-list li a .news-index {
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 1.3rem;
            min-width: 36px;
        }
        .news-list li a .news-title {
            font-weight: 600;
            flex: 1;
        }
        .news-list li a .news-date {
            color: var(--text-silver);
            font-size: 0.85rem;
            white-space: nowrap;
        }
        .news-sidebar {
            background: rgba(15, 12, 32, 0.6);
            border: 1px solid var(--border-soft);
            border-radius: 20px;
            padding: 28px;
            height: fit-content;
        }
        .news-sidebar h3 {
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        .news-sidebar ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-sidebar ul li a {
            color: var(--text-silver);
            text-decoration: none;
            transition: color 0.2s;
            font-size: 0.95rem;
        }
        .news-sidebar ul li a:hover {
            color: var(--accent-cyan);
        }
        /* Membership */
        .membership-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .membership-card {
            background: linear-gradient(145deg, rgba(204,255,0,0.06), rgba(0,240,255,0.06));
            border: 1px solid var(--border-soft);
            border-radius: 20px;
            padding: 28px;
            transition: transform 0.25s;
        }
        .membership-card:hover {
            transform: translateY(-4px);
        }
        .membership-card i {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }
        .membership-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        .membership-card p {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        /* Timeline */
        .timeline {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .timeline-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .timeline-dot {
            min-width: 14px;
            height: 14px;
            background: var(--accent-cyan);
            border-radius: 50%;
            margin-top: 6px;
            box-shadow: 0 0 10px rgba(0,240,255,0.5);
        }
        .timeline-content h4 {
            font-weight: 700;
            margin-bottom: 6px;
        }
        .timeline-content p {
            color: var(--text-silver);
            font-size: 0.95rem;
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
        }
        .faq-item {
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--border-soft);
            border-radius: 16px;
            overflow: hidden;
        }
        .faq-item summary {
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            list-style: none;
            transition: background 0.2s;
        }
        .faq-item summary:hover {
            background: rgba(0, 240, 255, 0.05);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--accent-cyan);
            transition: transform 0.2s;
        }
        .faq-item[open] summary i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-silver);
            line-height: 1.7;
        }
        /* Subscribe */
        .subscribe-box {
            background: linear-gradient(135deg, rgba(0,240,255,0.1), rgba(204,255,0,0.08));
            border: 1px solid var(--border-soft);
            border-radius: 28px;
            padding: 48px;
            text-align: center;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 28px auto 0;
        }
        .subscribe-form input {
            flex: 1;
            padding: 14px 20px;
            border-radius: 50px;
            border: 1px solid rgba(255,255,255,0.25);
            background: rgba(255,255,255,0.06);
            color: var(--text-white);
            font-size: 1rem;
            outline: none;
            transition: border-color 0.2s;
        }
        .subscribe-form input:focus {
            border-color: var(--accent-cyan);
        }
        .subscribe-form button {
            padding: 14px 28px;
            border-radius: 50px;
            background: linear-gradient(135deg, #CCFF00, #00F0FF);
            color: #0F0C20;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: transform 0.2s;
            white-space: nowrap;
        }
        .subscribe-form button:hover {
            transform: scale(1.04);
        }
        /* Footer */
        .site-footer {
            background: rgba(10, 8, 22, 0.9);
            border-top: 1px solid var(--border-soft);
            padding: 48px 0 28px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .footer-brand strong {
            color: var(--text-white);
        }
        .footer-col h4 {
            margin-bottom: 16px;
            font-size: 1.05rem;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            color: var(--text-silver);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        .footer-col ul a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            color: var(--text-silver);
            font-size: 0.85rem;
        }
        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0,0,0,0.7);
            backdrop-filter: blur(8px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), linear-gradient(135deg, #CCFF00, #00F0FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0,240,255,0.4);
            transition: transform 0.25s, box-shadow 0.25s, opacity 0.25s;
            opacity: 0.65;
            text-decoration: none;
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }
        .fab-left:hover {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 0 30px rgba(204,255,0,0.6);
        }
        .fab-left:active {
            transform: scale(0.95);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 2.5rem;
            }
            .featured-grid, .membership-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
                background: rgba(11, 26, 48, 0.98);
                flex-direction: column;
                padding: 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border-soft);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-wrap {
                height: 64px;
            }
            .logo-text {
                font-size: 1rem;
                max-width: 200px;
            }
            .btn-signup {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .btn-login {
                padding: 8px 10px;
                font-size: 0.85rem;
            }
            .hero-section {
                min-height: 500px;
                padding: 60px 0 70px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .story-grid, .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .featured-grid, .membership-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .subscribe-box {
                padding: 32px 20px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .countdown-inner {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary, .btn-outline {
                width: 100%;
                justify-content: center;
                text-align: center;
            }
            .hero-trust {
                flex-direction: column;
                gap: 10px;
            }
            .nav-auth {
                gap: 4px;
            }
            .btn-signup {
                padding: 8px 12px;
            }
            .fab-left {
                left: 10px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-dark: #1E293B;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-glow: 0 0 15px rgba(0,240,255,0.5);
            --shadow-blue: 0 0 15px rgba(0,82,255,0.4);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        img { max-width: 100%; height: auto; display: block; }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8,9,15,0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(30,41,59,0.6);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            gap: 20px;
        }
        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            white-space: nowrap;
            background: linear-gradient(135deg, #FFFFFF 30%, #00F0FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo-text span {
            color: var(--accent-cyan);
            -webkit-text-fill-color: var(--accent-cyan);
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 28px;
            align-items: center;
        }
        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-silver);
            position: relative;
            padding: 6px 2px;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--accent-cyan);
        }
        .nav-links a:hover {
            color: #FFFFFF;
        }
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-login, .btn-signup {
            font-size: 0.85rem;
            font-weight: 600;
            padding: 9px 18px;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            white-space: nowrap;
        }
        .btn-login {
            background: transparent;
            color: var(--text-silver);
            border: 1px solid rgba(203,213,225,0.3);
        }
        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0,240,255,0.2);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            box-shadow: 0 0 18px rgba(0,82,255,0.4);
        }
        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0,240,255,0.6);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: #FFFFFF;
            font-size: 1.4rem;
            cursor: pointer;
            padding: 4px;
        }

        /* Article Layout */
        .article-main {
            padding: 60px 0 80px;
            background: radial-gradient(ellipse at 20% 10%, rgba(0,82,255,0.06) 0%, transparent 55%),
                        radial-gradient(ellipse at 80% 90%, rgba(0,240,255,0.04) 0%, transparent 45%);
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 40px;
            align-items: start;
        }
        .article-body {
            max-width: 720px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            margin-bottom: 20px;
            font-size: 0.85rem;
            color: var(--text-silver);
        }
        .article-category {
            background: rgba(0,240,255,0.12);
            color: var(--accent-cyan);
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.02em;
        }
        .article-date {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.01em;
            color: #FFFFFF;
        }
        .article-cover {
            margin-bottom: 30px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(30,41,59,0.7);
            box-shadow: 0 10px 30px rgba(0,0,0,0.4);
        }
        .article-cover img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.7;
            color: #E2E8F0;
        }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 32px 0 16px;
            color: #FFFFFF;
            line-height: 1.3;
        }
        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin: 24px 0 12px;
            color: var(--accent-cyan);
        }
        .article-content ul, .article-content ol {
            margin: 12px 0 20px 24px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content strong {
            color: #FFFFFF;
            font-weight: 700;
        }
        .article-content a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: #FFFFFF;
        }
        .article-content blockquote {
            border-left: 3px solid var(--accent-cyan);
            padding: 16px 20px;
            margin: 24px 0;
            background: rgba(0,240,255,0.05);
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: var(--text-silver);
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 90px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: rgba(13,17,30,0.8);
            border: 1px solid rgba(30,41,59,0.6);
            border-radius: var(--radius-md);
            padding: 22px;
        }
        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #FFFFFF;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(30,41,59,0.6);
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            margin-bottom: 12px;
        }
        .sidebar-card ul li a {
            font-size: 0.9rem;
            color: var(--text-silver);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }
        .sidebar-card ul li a:hover {
            color: var(--accent-cyan);
            transform: translateX(4px);
        }
        .sidebar-card ul li a i {
            font-size: 0.7rem;
            color: var(--accent-cyan);
        }
        .sidebar-cta {
            background: linear-gradient(135deg, rgba(0,82,255,0.15), rgba(0,240,255,0.1));
            border: 1px solid rgba(0,240,255,0.25);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
        }
        .sidebar-cta h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #FFFFFF;
        }
        .sidebar-cta p {
            font-size: 0.9rem;
            color: var(--text-silver);
            margin-bottom: 16px;
        }
        .sidebar-cta .btn-signup {
            width: 100%;
        }

        /* CTA Section */
        .article-cta {
            margin-top: 50px;
            padding: 40px;
            background: linear-gradient(135deg, rgba(0,82,255,0.12), rgba(0,240,255,0.08));
            border: 1px solid rgba(0,240,255,0.2);
            border-radius: var(--radius-lg);
        }
        .article-cta h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #FFFFFF;
        }
        .article-cta p {
            color: var(--text-silver);
            margin-bottom: 20px;
        }
        .article-cta .btn-signup {
            padding: 12px 28px;
            font-size: 1rem;
        }

        /* Not Found */
        .not-found {
            padding: 80px 0;
            text-align: center;
        }
        .not-found h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .not-found p {
            color: var(--text-silver);
            margin-bottom: 24px;
        }
        .not-found .btn-signup {
            display: inline-block;
            padding: 12px 28px;
            font-size: 1rem;
            border-radius: 6px;
        }

        /* Floating Action Button */
        .fab-neon {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8,9,15,0.85);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8,9,15,0.85), rgba(8,9,15,0.85)), linear-gradient(135deg, #00F0FF, #0052FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 15px rgba(0,240,255,0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.6;
            transition: all 0.3s ease;
            color: #00F0FF;
            font-size: 1.4rem;
        }
        .fab-neon:hover {
            opacity: 1;
            box-shadow: 0 0 28px rgba(0,240,255,0.8), 0 0 50px rgba(0,82,255,0.4);
            transform: scale(1.1);
            color: #FFFFFF;
        }
        .fab-neon:active {
            transform: scale(0.95);
            border-color: #FF007F;
            color: #FF007F;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(30,41,59,0.6);
            padding: 50px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-brand strong {
            font-size: 1rem;
            color: #FFFFFF;
            display: block;
            line-height: 1.5;
        }
        .footer-brand {
            color: var(--text-silver);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-silver);
            transition: all 0.3s ease;
        }
        .footer-col ul li a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(30,41,59,0.5);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            font-size: 0.8rem;
            color: #64748B;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(8,9,15,0.98);
                flex-direction: column;
                gap: 0;
                padding: 10px 0;
                border-bottom: 1px solid rgba(30,41,59,0.6);
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links a {
                display: block;
                padding: 14px 24px;
                font-size: 1rem;
                width: 100%;
            }
            .nav-links a::after {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth {
                gap: 6px;
            }
            .btn-login, .btn-signup {
                padding: 7px 12px;
                font-size: 0.8rem;
            }
            .article-title {
                font-size: 1.7rem;
            }
            .article-main {
                padding: 40px 0 60px;
            }
            .article-cta {
                padding: 28px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 1rem;
            }
            .nav-auth .btn-login {
                display: none;
            }
            .article-title {
                font-size: 1.4rem;
            }
            .article-content {
                font-size: 0.95rem;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
            .fab-neon {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 80px;
                font-size: 1.2rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: #151230;
            --accent-primary: #CCFF00;
            --accent-secondary: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --border-color: rgba(204, 255, 0, 0.15);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.3);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.2);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --spacing-section: 80px;
        }

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

        body {
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            font-family: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(204, 255, 0, 0.12);
            transition: all 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            line-height: 1.3;
        }

        .logo-text span {
            color: var(--accent-secondary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.92rem;
            font-weight: 500;
            transition: color 0.25s ease;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--accent-primary);
        }

        .nav-links a.active {
            color: var(--accent-primary);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-primary);
        }

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

        .btn-login {
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 0.92rem;
            font-weight: 500;
            cursor: pointer;
            padding: 10px 16px;
            transition: color 0.25s ease;
            white-space: nowrap;
        }

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

        .btn-signup {
            background: var(--accent-primary);
            border: none;
            color: #0F0C20;
            font-size: 0.92rem;
            font-weight: 700;
            cursor: pointer;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            white-space: nowrap;
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.25);
        }

        .btn-signup:hover {
            background: #d4ff1a;
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.45);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(204, 255, 0, 0.3);
            color: var(--accent-primary);
            font-size: 1.2rem;
            cursor: pointer;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
        }

        .mobile-toggle:hover {
            background: rgba(204, 255, 0, 0.1);
        }

        /* Hero Section */
        .page-hero {
            padding: 140px 0 60px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-secondary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 50px;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

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

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.03em;
            max-width: 750px;
            background: linear-gradient(135deg, #FFFFFF 0%, #CCFF00 50%, #00F0FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 650px;
            line-height: 1.7;
        }

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

        .section-block {
            margin-bottom: var(--spacing-section);
        }

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

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

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.7;
        }

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

        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            opacity: 0;
            transition: opacity 0.35s ease;
        }

        .strategy-card:hover {
            border-color: rgba(204, 255, 0, 0.4);
            box-shadow: var(--shadow-lime);
            transform: translateY(-4px);
        }

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

        .strategy-card .card-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(204, 255, 0, 0.1);
            border-radius: 12px;
            margin-bottom: 18px;
            font-size: 1.4rem;
            color: var(--accent-primary);
        }

        .strategy-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }

        .strategy-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Process Steps */
        .process-list {
            display: flex;
            flex-direction: column;
            gap: 28px;
            max-width: 800px;
        }

        .process-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .process-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.2), rgba(0, 240, 255, 0.2));
            border: 1px solid rgba(204, 255, 0, 0.3);
            border-radius: 50%;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--accent-primary);
        }

        .process-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .process-content p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Featured Image Block */
        .featured-image-block {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin: 40px 0;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .featured-image-block img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            display: block;
        }

        .featured-image-block .overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 40px 32px;
            background: linear-gradient(to top, rgba(15, 12, 32, 0.95) 0%, transparent 100%);
        }

        .featured-image-block .overlay h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .featured-image-block .overlay p {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 600px;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.08), rgba(0, 240, 255, 0.08));
            border: 1px solid rgba(204, 255, 0, 0.2);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            margin-top: 60px;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--accent-primary);
            color: #0F0C20;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 0 25px rgba(204, 255, 0, 0.3);
        }

        .btn-primary:hover {
            background: #d4ff1a;
            box-shadow: 0 0 40px rgba(204, 255, 0, 0.5);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: transparent;
            color: var(--accent-secondary);
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(0, 240, 255, 0.4);
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .btn-secondary:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-secondary);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }

        /* FAQ Section */
        .faq-list {
            max-width: 800px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            color: var(--text-primary);
            font-size: 1.05rem;
            font-weight: 600;
            transition: color 0.25s ease;
        }

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

        .faq-question i {
            color: var(--accent-secondary);
            font-size: 0.9rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

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

        .faq-answer p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: rgba(11, 26, 48, 0.6);
            border-top: 1px solid rgba(204, 255, 0, 0.1);
            padding: 60px 0 30px;
            margin-top: 60px;
        }

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

        .footer-brand {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .footer-brand strong {
            display: block;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.92rem;
            transition: color 0.25s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-bottom span {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        /* Floating Action Button */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.4rem;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            opacity: 0.6;
            text-decoration: none;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }

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

        .fab-left .notification-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #0F0C20;
            animation: blink-dot 2s infinite;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 20px;
            }

            .page-hero h1 {
                font-size: 2.2rem;
            }

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

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

            .nav-wrap {
                height: 64px;
                gap: 12px;
            }

            .logo-text {
                font-size: 1rem;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(15, 12, 32, 0.98);
                flex-direction: column;
                gap: 0;
                padding: 16px 24px;
                border-bottom: 1px solid rgba(204, 255, 0, 0.15);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }

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

            .nav-links li {
                width: 100%;
            }

            .nav-links a {
                display: block;
                padding: 14px 0;
                font-size: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }

            .nav-links a:last-child {
                border-bottom: none;
            }

            .nav-links a.active::after {
                display: none;
            }

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

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

            .btn-signup {
                padding: 8px 16px;
                font-size: 0.85rem;
            }

            .btn-login {
                padding: 8px 12px;
                font-size: 0.85rem;
            }

            .page-hero {
                padding: 110px 0 40px;
            }

            .page-hero h1 {
                font-size: 1.8rem;
            }

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

            .section-header h2 {
                font-size: 1.6rem;
            }

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

            .featured-image-block img {
                height: 260px;
            }

            .featured-image-block .overlay {
                padding: 24px 20px;
            }

            .featured-image-block .overlay h3 {
                font-size: 1.2rem;
            }

            .cta-section {
                padding: 36px 24px;
            }

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

            .process-item {
                gap: 14px;
            }

            .process-number {
                width: 40px;
                height: 40px;
                font-size: 0.95rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .fab-left {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 80px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 0.85rem;
                max-width: 160px;
                line-height: 1.2;
            }

            .nav-auth {
                gap: 6px;
            }

            .btn-login {
                padding: 6px 8px;
                font-size: 0.8rem;
            }

            .btn-signup {
                padding: 6px 12px;
                font-size: 0.8rem;
            }

            .page-hero h1 {
                font-size: 1.5rem;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .btn-primary, .btn-secondary {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #A0C8BC;
            --border-gold: rgba(255, 215, 0, 0.4);
            --border-gold-strong: rgba(255, 215, 0, 0.8);
            --shadow-gold: rgba(255, 215, 0, 0.25);
            --shadow-dark: rgba(0, 0, 0, 0.45);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 3.5rem;
            --spacing-2xl: 5rem;
            --transition-fast: 0.2s ease;
            --transition-medium: 0.35s ease;
            --transition-slow: 0.5s ease;
        }

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

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

        body {
            font-family: 'Inter', 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* ===== HEADER / NAV ===== */
        .site-header {
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-gold);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0.75rem 0;
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            flex-wrap: nowrap;
        }

        .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-gold);
            white-space: nowrap;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .logo-text span {
            color: var(--text-mint);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            list-style: none;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }

        .nav-links li a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-mint);
            padding: 0.5rem 0.9rem;
            border-radius: 30px;
            position: relative;
            transition: all var(--transition-medium);
            white-space: nowrap;
            display: inline-block;
        }

        .nav-links li a:hover {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .nav-links li a.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.15);
            font-weight: 600;
            box-shadow: 0 0 0 1px var(--border-gold);
        }

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

        .btn-login,
        .btn-signup {
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.55rem 1.15rem;
            border-radius: 30px;
            transition: all var(--transition-medium);
            white-space: nowrap;
        }

        .btn-login {
            background: transparent;
            color: var(--text-mint);
            border: 1px solid rgba(209, 242, 235, 0.3);
        }

        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.06);
        }

        .btn-signup {
            background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
            color: #0A2E1C;
            box-shadow: 0 4px 18px var(--shadow-gold);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.45);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 0.3rem 0.5rem;
            border-radius: 8px;
            border: 1px solid rgba(255,255,255,0.2);
        }

        .mobile-toggle:hover {
            color: var(--accent-gold);
            border-color: var(--accent-gold);
        }

        /* ===== FAB ===== */
        .fab-floating {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(145deg, #1A1A1A 0%, #0B0B0B 100%);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.5rem;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            opacity: 0.75;
            transition: all var(--transition-medium);
            cursor: pointer;
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-floating:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.5);
        }

        .fab-floating:active {
            transform: scale(0.95) translateY(2px);
        }

        .fab-floating .fab-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            background: #FF0033;
            border-radius: 50%;
            border: 2px solid #0B0B0B;
            animation: blinkDot 1.5s ease-in-out infinite;
        }

        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

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

        /* ===== PAGE HERO ===== */
        .page-hero {
            background: linear-gradient(180deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            border-bottom: 1px solid var(--border-gold);
            padding: var(--spacing-xl) 0;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero .hero-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 0.4rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: var(--spacing-sm);
        }

        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            color: var(--text-white);
            margin-bottom: var(--spacing-sm);
            max-width: 750px;
        }

        .page-hero h1 .highlight {
            color: var(--accent-gold);
            position: relative;
        }

        .page-hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-mint);
            max-width: 680px;
            line-height: 1.6;
            margin-bottom: var(--spacing-md);
        }

        .page-hero .hero-meta {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-stat {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .hero-stat i {
            color: var(--accent-gold);
            font-size: 1rem;
        }

        /* ===== MAIN CONTENT SECTIONS ===== */
        .main-content {
            padding: var(--spacing-xl) 0;
            background: var(--primary-bg);
        }

        .section-block {
            margin-bottom: var(--spacing-2xl);
        }

        .section-block:last-child {
            margin-bottom: 0;
        }

        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .section-title i {
            color: var(--accent-gold);
            font-size: 1.6rem;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: var(--spacing-lg);
            max-width: 800px;
        }

        /* ===== ASYMMETRIC FEATURE GRID ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: var(--spacing-lg);
            align-items: center;
            margin-bottom: var(--spacing-lg);
        }

        .feature-grid.reverse {
            grid-template-columns: 0.9fr 1.1fr;
        }

        .feature-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--accent-gold);
            letter-spacing: -0.02em;
        }

        .feature-content p {
            color: var(--text-mint);
            line-height: 1.65;
            margin-bottom: var(--spacing-sm);
        }

        .feature-content ul {
            list-style: none;
            padding: 0;
        }

        .feature-content ul li {
            padding: 0.5rem 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-mint);
            font-size: 0.95rem;
            border-bottom: 1px solid rgba(209, 242, 235, 0.1);
        }

        .feature-content ul li i {
            color: var(--accent-gold);
            margin-top: 4px;
            font-size: 0.8rem;
        }

        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-gold);
            box-shadow: 0 20px 40px var(--shadow-dark);
            position: relative;
        }

        .feature-image img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .feature-image:hover img {
            transform: scale(1.05);
        }

        .feature-image .image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 1.5rem;
            background: linear-gradient(transparent, rgba(10, 46, 28, 0.95));
        }

        .feature-image .image-overlay span {
            font-size: 0.8rem;
            color: var(--accent-gold);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        /* ===== TIPS CARDS ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }

        .tip-card {
            background: linear-gradient(160deg, var(--secondary-bg) 0%, #0F3A22 100%);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all var(--transition-medium);
            position: relative;
            overflow: hidden;
        }

        .tip-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), transparent);
        }

        .tip-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border-gold-strong);
            border-color: var(--border-gold-strong);
        }

        .tip-card .tip-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.15);
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: var(--spacing-xs);
            border: 1px solid var(--border-gold);
        }

        .tip-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-white);
            letter-spacing: -0.01em;
        }

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

        .tip-card .tip-tag {
            display: inline-block;
            margin-top: var(--spacing-xs);
            font-size: 0.7rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.1);
            padding: 0.25rem 0.6rem;
            border-radius: 4px;
        }

        /* ===== STEP TIMELINE ===== */
        .step-timeline {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 2rem;
        }

        .step-timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--accent-gold), transparent);
        }

        .step-item {
            position: relative;
            padding-bottom: var(--spacing-lg);
        }

        .step-item:last-child {
            padding-bottom: 0;
        }

        .step-item::before {
            content: '';
            position: absolute;
            left: -2rem;
            top: 4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent-gold);
            border: 3px solid var(--primary-bg);
            box-shadow: 0 0 0 2px var(--accent-gold);
        }

        .step-item h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 0.35rem;
        }

        .step-item p {
            color: var(--text-mint);
            font-size: 0.95rem;
            line-height: 1.6;
            max-width: 650px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            margin-top: var(--spacing-md);
        }

        .faq-item {
            border: 1px solid rgba(209, 242, 235, 0.15);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition-medium);
            background: rgba(18, 62, 37, 0.5);
        }

        .faq-item:hover {
            border-color: var(--border-gold);
            background: rgba(18, 62, 37, 0.8);
        }

        .faq-question {
            padding: 1.1rem 1.3rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-white);
            font-size: 0.98rem;
            user-select: none;
            gap: var(--spacing-sm);
        }

        .faq-question i {
            color: var(--accent-gold);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 1.3rem;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 1.3rem 1.1rem;
        }

        .faq-answer p {
            color: var(--text-mint);
            font-size: 0.92rem;
            line-height: 1.65;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary-bg) 0%, #1A4D30 100%);
            border: 1px solid var(--border-gold-strong);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            text-align: center;
            box-shadow: 0 20px 50px var(--shadow-dark);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
            color: var(--text-white);
            letter-spacing: -0.02em;
        }

        .cta-section p {
            color: var(--text-mint);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto var(--spacing-md);
            line-height: 1.6;
        }

        .cta-section .cta-buttons {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-primary {
            background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
            color: #0A2E1C;
            font-weight: 700;
            padding: 0.85rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            box-shadow: 0 8px 28px var(--shadow-gold);
            transition: all var(--transition-medium);
        }

        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 38px rgba(255, 215, 0, 0.5);
        }

        .btn-cta-secondary {
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            padding: 0.85rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all var(--transition-medium);
        }

        .btn-cta-secondary:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.06);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #071F13;
            border-top: 1px solid var(--border-gold);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-2xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

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

        .footer-brand strong {
            color: var(--accent-gold);
            font-size: 1rem;
            display: block;
        }

        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.01em;
        }

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

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

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

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(209, 242, 235, 0.1);
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 var(--spacing-sm);
            }

            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .feature-grid,
            .feature-grid.reverse {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .feature-image img {
                height: 240px;
            }

            .page-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-wrap {
                flex-wrap: wrap;
            }

            .logo-text {
                font-size: 1rem;
                flex-shrink: 0;
            }

            .nav-links {
                order: 3;
                flex-basis: 100%;
                justify-content: flex-start;
                gap: 0.4rem;
                overflow-x: auto;
                padding-bottom: 0.4rem;
                -webkit-overflow-scrolling: touch;
            }

            .nav-links li a {
                font-size: 0.8rem;
                padding: 0.4rem 0.7rem;
                white-space: nowrap;
            }

            .nav-auth {
                margin-left: auto;
            }

            .btn-login,
            .btn-signup {
                font-size: 0.75rem;
                padding: 0.45rem 0.85rem;
            }

            .mobile-toggle {
                display: none;
            }

            .page-hero {
                padding: var(--spacing-lg) 0;
            }

            .page-hero h1 {
                font-size: 1.8rem;
            }

            .page-hero .hero-subtitle {
                font-size: 0.98rem;
            }

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

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

            .cta-section {
                padding: var(--spacing-lg) var(--spacing-md);
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .fab-floating {
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
                left: 0.75rem;
                bottom: 5rem;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 0.85rem;
            }

            .btn-login,
            .btn-signup {
                font-size: 0.7rem;
                padding: 0.4rem 0.7rem;
            }

            .page-hero h1 {
                font-size: 1.5rem;
            }

            .page-hero .hero-subtitle {
                font-size: 0.9rem;
            }

            .section-title {
                font-size: 1.3rem;
            }

            .section-subtitle {
                font-size: 0.9rem;
            }

            .feature-content h3 {
                font-size: 1.25rem;
            }

            .step-timeline {
                padding-left: 1.5rem;
            }

            .step-item::before {
                left: -1.5rem;
                width: 12px;
                height: 12px;
                border-width: 2px;
            }

            .faq-question {
                font-size: 0.88rem;
                padding: 0.9rem 1rem;
            }

            .faq-answer {
                padding: 0 1rem;
            }

            .faq-item.active .faq-answer {
                padding: 0 1rem 0.9rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #0A2E1C;
            --forest-bg: #123E25;
            --gold-accent: #FFD700;
            --lucky-red: #D32F2F;
            --white-text: #FFFFFF;
            --pale-mint: #D1F2EB;
            --muted-text: #A6B8AF;
            --card-bg: #0F3521;
            --border-gold: rgba(255, 215, 0, 0.35);
            --shadow-gold: 0 8px 24px rgba(255, 215, 0, 0.12);
            --shadow-dark: 0 8px 24px rgba(0, 0, 0, 0.35);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --space-1: 0.5rem;
            --space-2: 1rem;
            --space-3: 1.5rem;
            --space-4: 2rem;
            --space-5: 3rem;
            --space-6: 4rem;
            --transition: 0.25s ease;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            background: var(--primary-bg);
            color: var(--white-text);
            line-height: 1.6;
            min-height: 100vh;
        }
        img { max-width: 100%; display: block; }
        a { text-decoration: none; color: inherit; }
        button { cursor: pointer; border: none; background: none; color: inherit; font-family: inherit; }
        ul { list-style: none; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

        /* HEADER */
        .site-header {
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-gold);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .nav-wrap { display: flex; align-items: center; justify-content: space-between; padding: 1rem 0; gap: 1.5rem; flex-wrap: wrap; }
        .logo-text { font-size: 1.3rem; font-weight: 800; color: var(--gold-accent); letter-spacing: -0.5px; white-space: nowrap; }
        .logo-text span { color: var(--white-text); }
        .nav-links { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; }
        .nav-links li a { color: var(--pale-mint); font-weight: 500; font-size: 0.95rem; transition: color var(--transition); padding: 0.5rem 0.2rem; position: relative; }
        .nav-links li a:hover, .nav-links li a.active { color: var(--gold-accent); }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            left: 0; right: 0; bottom: -2px;
            height: 2px;
            background: var(--gold-accent);
            border-radius: 2px;
        }
        .nav-auth { display: flex; align-items: center; gap: 0.75rem; }
        .btn-login { color: var(--white-text); font-weight: 600; padding: 0.5rem 1rem; transition: color var(--transition); }
        .btn-login:hover { color: var(--gold-accent); }
        .btn-signup {
            background: var(--gold-accent);
            color: var(--primary-bg);
            font-weight: 700;
            padding: 0.55rem 1.3rem;
            border-radius: 40px;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.3);
        }
        .btn-signup:hover { background: #FFE033; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255, 215, 0, 0.4); }
        .mobile-toggle { display: none; font-size: 1.6rem; color: var(--gold-accent); }

        /* MAIN LAYOUT */
        main { min-height: 60vh; }
        section { padding: var(--space-5) 0; }

        .page-banner {
            background-image: linear-gradient(rgba(10,46,28,0.75), rgba(10,46,28,0.85)), url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            padding: 4rem 0 3rem;
            border-bottom: 1px solid var(--border-gold);
        }
        .page-banner .container { max-width: 900px; }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--gold-accent);
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .page-banner p { font-size: 1.15rem; color: var(--pale-mint); max-width: 750px; }

        /* PROMO CARDS */
        .promo-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
        .promo-card {
            background: var(--card-bg);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-dark);
        }
        .promo-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-gold); border-color: var(--gold-accent); }
        .promo-card img { width: 100%; height: 180px; object-fit: cover; }
        .promo-card .card-body { padding: 1.5rem; }
        .promo-card h3 { font-size: 1.4rem; color: var(--gold-accent); margin-bottom: 0.5rem; font-weight: 700; }
        .promo-card p { color: var(--pale-mint); font-size: 0.95rem; margin-bottom: 1rem; }
        .promo-tag { display: inline-block; background: var(--lucky-red); color: #fff; font-weight: 700; font-size: 0.75rem; padding: 0.3rem 0.7rem; border-radius: 20px; text-transform: uppercase; letter-spacing: 0.5px; }

        .steps-flow { display: flex; flex-direction: column; gap: 1.2rem; }
        .step-item { display: flex; gap: 1.2rem; align-items: flex-start; }
        .step-num {
            background: var(--gold-accent);
            color: var(--primary-bg);
            width: 40px; height: 40px;
            border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1.2rem;
            flex-shrink: 0;
        }
        .step-item h3 { font-size: 1.25rem; color: var(--gold-accent); font-weight: 700; }
        .step-item p { color: var(--pale-mint); }

        /* FAQ */
        .faq-list { display: flex; flex-direction: column; gap: 1rem; }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.2rem 1.5rem;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--white-text);
            display: flex; justify-content: space-between; align-items: center;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(255, 215, 0, 0.05); }
        .faq-question i { color: var(--gold-accent); transition: transform var(--transition); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 1.5rem; }
        .faq-item.open .faq-answer { max-height: 200px; padding-bottom: 1.5rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer p { color: var(--muted-text); }

        /* CTA */
        .cta-banner {
            background: linear-gradient(135deg, #123E25, #0A2E1C);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            text-align: center;
        }
        .cta-banner h2 { font-size: 2rem; color: var(--gold-accent); font-weight: 800; margin-bottom: 1rem; }
        .cta-banner p { color: var(--pale-mint); max-width: 600px; margin: 0 auto 1.5rem; }
        .btn-gold {
            background: var(--gold-accent);
            color: var(--primary-bg);
            font-weight: 700;
            padding: 0.8rem 2rem;
            border-radius: 40px;
            display: inline-block;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.35);
        }
        .btn-gold:hover { background: #FFE033; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255, 215, 0, 0.5); }

        /* FOOTER */
        .site-footer {
            background: #072515;
            border-top: 1px solid var(--border-gold);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
        .footer-brand strong { color: var(--gold-accent); font-size: 1.1rem; }
        .footer-brand { color: var(--muted-text); font-size: 0.9rem; }
        .footer-col h4 { color: var(--gold-accent); font-size: 1rem; margin-bottom: 1rem; }
        .footer-col ul li { margin-bottom: 0.5rem; }
        .footer-col ul li a { color: var(--pale-mint); transition: color var(--transition); font-size: 0.9rem; }
        .footer-col ul li a:hover { color: var(--gold-accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            padding-top: 1.5rem;
            display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem;
            color: var(--muted-text);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            background: #0B0B0B;
            border: 2px solid var(--gold-accent);
            border-radius: 50%;
            width: 56px; height: 56px;
            display: flex; align-items: center; justify-content: center;
            color: var(--gold-accent);
            font-size: 1.5rem;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            opacity: 0.7;
            transition: all var(--transition);
            animation: breathe 3s infinite ease-in-out;
        }
        .fab-left:hover { opacity: 1; transform: scale(1.1); box-shadow: 0 8px 28px rgba(255, 215, 0, 0.5); }
        @keyframes breathe {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }
        .fab-left .notification-dot {
            position: absolute;
            top: 4px; right: 4px;
            width: 12px; height: 12px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid #0B0B0B;
        }

        /* RESPONSIVE */
        @media (max-width: 768px) {
            .nav-wrap { flex-direction: column; align-items: flex-start; }
            .nav-links { display: none; width: 100%; flex-direction: column; gap: 0.5rem; }
            .nav-links.open { display: flex; }
            .mobile-toggle { display: block; }
            .nav-auth { width: 100%; justify-content: flex-end; }
            .page-banner h1 { font-size: 2rem; }
            .footer-grid { grid-template-columns: 1fr; }
            .cta-banner { padding: 1.8rem; }
            .fab-left { bottom: 4rem; left: 0.75rem; width: 48px; height: 48px; font-size: 1.2rem; }
        }
        @media (min-width: 769px) {
            .nav-links { display: flex !important; }
            .mobile-toggle { display: none !important; }
        }