/* roulang page: index */
:root {
            --bg-primary: #07070D;
            --bg-secondary: #0E0E1E;
            --accent-lime: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-neon: rgba(163, 230, 53, 0.4);
            --shadow-neon: 0 0 15px rgba(163, 230, 53, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --font-base: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --spacing-section: 5rem;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-base);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(163, 230, 53, 0.5);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, .btn {
            font-family: inherit;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            outline: none;
        }
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        /* NAVBAR */
        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.15);
            padding: 0.8rem 0;
            transition: background 0.3s;
            z-index: 1050;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.6rem;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .navbar-brand i {
            background: none;
            -webkit-text-fill-color: var(--accent-lime);
            font-size: 1.9rem;
            filter: drop-shadow(0 0 10px var(--accent-lime));
        }
        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            margin: 0 0.2rem;
            padding: 0.6rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all 0.25s;
            letter-spacing: 0.01em;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent-lime) !important;
            text-shadow: 0 0 12px rgba(163, 230, 53, 0.7);
            background: rgba(163, 230, 53, 0.08);
        }
        .navbar-nav .btn-outline-neon {
            border: 1.5px solid var(--accent-lime);
            color: var(--accent-lime);
            background: transparent;
            border-radius: 3rem;
            padding: 0.5rem 1.6rem;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.3s;
            margin-left: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .navbar-nav .btn-outline-neon:hover {
            background: var(--accent-lime);
            color: #0A0A0A;
            box-shadow: var(--shadow-neon);
        }
        .navbar-nav .btn-neon {
            background: var(--accent-lime);
            color: #0A0A0A;
            border-radius: 3rem;
            padding: 0.5rem 1.8rem;
            font-weight: 800;
            font-size: 0.9rem;
            border: none;
            box-shadow: var(--shadow-neon);
            margin-left: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: all 0.3s;
        }
        .navbar-nav .btn-neon:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.7);
            transform: translateY(-2px);
        }
        .navbar-toggler {
            border: 1px solid var(--accent-lime);
            padding: 0.4rem 0.6rem;
            background: rgba(163, 230, 53, 0.1);
        }
        .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.5rem;
        }
        /* HERO */
        .hero {
            background: linear-gradient(180deg, rgba(7,7,13,0.75) 0%, rgba(14,14,30,0.88) 100%), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            min-height: 85vh;
            display: flex;
            align-items: center;
            position: relative;
            padding-top: 6rem;
            padding-bottom: 4rem;
            border-bottom: 1px solid rgba(163, 230, 53, 0.2);
        }
        .hero .countdown-timer {
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid var(--accent-cyan);
            border-radius: 3rem;
            padding: 0.7rem 1.8rem;
            display: inline-flex;
            align-items: center;
            gap: 1rem;
            color: var(--accent-lime);
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: 1px;
            margin-bottom: 2.2rem;
            text-shadow: 0 0 12px var(--accent-lime);
        }
        .hero h1 {
            font-size: clamp(2.6rem, 6vw, 4.4rem);
            font-weight: 900;
            line-height: 1.2;
            background: linear-gradient(to right, #FFFFFF, var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1.25rem;
        }
        .hero .lead {
            color: var(--text-secondary);
            font-size: 1.2rem;
            max-width: 680px;
            margin-bottom: 2.5rem;
        }
        .btn-hero-primary {
            background: var(--accent-lime);
            color: #0A0A0A;
            padding: 0.9rem 2.4rem;
            border-radius: 4rem;
            font-weight: 800;
            font-size: 1.1rem;
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.8);
            transition: 0.3s;
            text-transform: uppercase;
            letter-spacing: 0.7px;
        }
        .btn-hero-primary:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 36px rgba(6, 182, 212, 0.9);
            transform: scale(1.04);
            color: #000;
        }
        .btn-hero-outline {
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 0.85rem 2.2rem;
            border-radius: 4rem;
            font-weight: 700;
            background: transparent;
        }
        .btn-hero-outline:hover {
            background: var(--accent-cyan);
            color: #000;
        }
        /* KPI */
        .kpi-board {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(163, 230, 53, 0.25);
            border-bottom: 1px solid rgba(163, 230, 53, 0.25);
            padding: 2.2rem 0;
        }
        .kpi-item {
            text-align: left;
        }
        .kpi-number {
            font-size: 2.4rem;
            font-weight: 900;
            background: linear-gradient(180deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .kpi-label {
            color: var(--text-secondary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            font-size: 0.85rem;
        }
        .section-title {
            font-weight: 800;
            font-size: 2.2rem;
            margin-bottom: 0.8rem;
            color: var(--text-primary);
            position: relative;
            display: inline-block;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 70px;
            height: 4px;
            background: var(--accent-lime);
            border-radius: 2px;
        }
        .section-sub {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 600px;
        }
        .card-neon {
            background: rgba(14, 14, 30, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(163, 230, 53, 0.2);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            transition: all 0.3s;
            height: 100%;
            box-shadow: var(--shadow-card);
        }
        .card-neon:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.3);
            transform: translateY(-5px);
        }
        .service-icon {
            font-size: 2.4rem;
            color: var(--accent-cyan);
            margin-bottom: 1rem;
        }
        .badge-neon {
            background: rgba(6, 182, 212, 0.15);
            color: var(--accent-cyan);
            font-weight: 700;
            padding: 0.3rem 0.8rem;
            border-radius: 2rem;
            font-size: 0.75rem;
        }
        .comparison-table {
            background: rgba(14, 14, 30, 0.9);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .milestone-dot {
            width: 14px;
            height: 14px;
            background: var(--accent-lime);
            border-radius: 50%;
            box-shadow: 0 0 14px var(--accent-lime);
        }
        .footer {
            background: var(--bg-primary);
            border-top: 1px solid rgba(163, 230, 53, 0.2);
            color: var(--text-muted);
        }
        .faq-item {
            background: rgba(14, 14, 30, 0.7);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            border: 1px solid rgba(255,255,255,0.05);
        }
        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 1100;
            width: 56px;
            height: 56px;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-cyan);
            border-radius: 2.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            box-shadow: 0 0 25px rgba(6, 182, 212, 0.45);
            transition: 0.3s;
        }
        .fab-left:hover {
            background: var(--accent-cyan);
            color: #000;
            box-shadow: 0 0 35px rgba(6, 182, 212, 0.8);
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 80vh;
            }
            .navbar-nav .btn-outline-neon, .navbar-nav .btn-neon {
                margin-left: 0;
                margin-top: 0.5rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #07070D;
            --bg-secondary: #0E0E1E;
            --accent-lime: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-neon: rgba(163, 230, 53, 0.4);
            --shadow-neon: 0 0 15px rgba(163, 230, 53, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --font-base: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --spacing-section: 5rem;
        }

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

        body {
            font-family: var(--font-base);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }

        a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(163, 230, 53, 0.5);
        }

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

        button,
        .btn {
            font-family: inherit;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            outline: none;
        }

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* NAVBAR */
        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.15);
            padding: 0.8rem 0;
            transition: background 0.3s;
            z-index: 1050;
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.6rem;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .navbar-brand i {
            background: none;
            -webkit-text-fill-color: var(--accent-lime);
            font-size: 1.9rem;
            filter: drop-shadow(0 0 10px var(--accent-lime));
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            margin: 0 0.2rem;
            padding: 0.6rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all 0.25s;
            letter-spacing: 0.01em;
            position: relative;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-lime) !important;
            text-shadow: 0 0 12px rgba(163, 230, 53, 0.7);
            background: rgba(163, 230, 53, 0.08);
        }

        .navbar-nav .btn-outline-neon {
            border: 1.5px solid var(--accent-lime);
            color: var(--accent-lime);
            background: transparent;
            border-radius: 3rem;
            padding: 0.5rem 1.6rem;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.3s;
            margin-left: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .navbar-nav .btn-outline-neon:hover {
            background: var(--accent-lime);
            color: #0A0A0A;
            box-shadow: var(--shadow-neon);
        }

        .navbar-nav .btn-neon {
            background: var(--accent-lime);
            color: #0A0A0A;
            border-radius: 3rem;
            padding: 0.5rem 1.8rem;
            font-weight: 800;
            font-size: 0.9rem;
            border: none;
            box-shadow: var(--shadow-neon);
            margin-left: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: all 0.3s;
        }

        .navbar-nav .btn-neon:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.7);
            transform: translateY(-2px);
        }

        .navbar-toggler {
            border: 1px solid var(--accent-lime);
            padding: 0.4rem 0.6rem;
            background: rgba(163, 230, 53, 0.1);
        }

        .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.5rem;
        }

        /* ARTICLE HERO BANNER */
        .article-hero-banner {
            background: linear-gradient(180deg, rgba(7, 7, 13, 0.8) 0%, rgba(14, 14, 30, 0.92) 100%), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            padding: 7rem 0 3rem 0;
            border-bottom: 1px solid rgba(163, 230, 53, 0.2);
            text-align: center;
        }

        .article-hero-banner .article-meta {
            display: inline-flex;
            align-items: center;
            gap: 1.5rem;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(163, 230, 53, 0.3);
            border-radius: 3rem;
            padding: 0.5rem 1.8rem;
            color: var(--accent-lime);
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 2rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .article-hero-banner h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 900;
            line-height: 1.25;
            background: linear-gradient(to right, #FFFFFF, var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1.5rem;
            max-width: 880px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ARTICLE CONTENT */
        .article-content-wrapper {
            background-color: var(--bg-primary);
            padding: 3rem 0 var(--spacing-section) 0;
        }

        .article-body-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(6, 182, 212, 0.15);
            border-radius: var(--radius-lg);
            padding: 2.8rem;
            box-shadow: var(--shadow-card);
            color: var(--text-primary);
        }

        .article-body-card h2,
        .article-body-card h3,
        .article-body-card h4 {
            color: var(--accent-lime);
            font-weight: 700;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }

        .article-body-card p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.2rem;
        }

        .article-body-card ul,
        .article-body-card ol {
            padding-left: 1.5rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }

        .article-body-card li {
            margin-bottom: 0.5rem;
        }

        .article-body-card img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .article-body-card blockquote {
            border-left: 4px solid var(--accent-lime);
            background: rgba(163, 230, 53, 0.05);
            padding: 1.2rem 1.8rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--accent-cyan);
        }

        .not-found-state {
            background: var(--bg-secondary);
            border: 1px solid rgba(6, 182, 212, 0.25);
            border-radius: var(--radius-lg);
            padding: 4rem 2rem;
            text-align: center;
            color: var(--text-secondary);
        }

        .not-found-state i {
            font-size: 3rem;
            color: var(--accent-pink);
            margin-bottom: 1.5rem;
        }

        .not-found-state h3 {
            color: var(--text-primary);
            font-weight: 700;
        }

        /* CTA SECTION */
        .cta-section {
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            padding: 4rem 0;
            border-top: 1px solid rgba(163, 230, 53, 0.15);
            border-bottom: 1px solid rgba(163, 230, 53, 0.15);
        }

        .cta-card {
            background: rgba(14, 14, 30, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(163, 230, 53, 0.3);
            border-radius: var(--radius-lg);
            padding: 2.8rem;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.7);
            text-align: center;
        }

        .cta-card h3 {
            font-weight: 800;
            font-size: 2rem;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .cta-card .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
            margin-top: 1.8rem;
        }

        .btn-cta-primary {
            background: var(--accent-lime);
            color: #0A0A0A;
            font-weight: 800;
            padding: 0.9rem 2.5rem;
            border-radius: 3rem;
            box-shadow: var(--shadow-neon);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .btn-cta-primary:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.7);
            color: #0A0A0A;
            transform: translateY(-2px);
        }

        .btn-cta-outline {
            border: 1.5px solid var(--accent-lime);
            color: var(--accent-lime);
            background: transparent;
            font-weight: 700;
            padding: 0.9rem 2.5rem;
            border-radius: 3rem;
            text-transform: uppercase;
        }

        .btn-cta-outline:hover {
            background: var(--accent-lime);
            color: #0A0A0A;
            box-shadow: var(--shadow-neon);
        }

        /* RELATED POSTS */
        .related-posts {
            padding: 4rem 0;
        }

        .related-posts h2 {
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 2.5rem;
            font-size: 1.8rem;
        }

        .related-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(6, 182, 212, 0.15);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
        }

        .related-card:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 0 20px rgba(163, 230, 53, 0.25);
            transform: translateY(-4px);
        }

        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .related-card-body {
            padding: 1.4rem;
        }

        .related-card-body h5 {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-primary);
        }

        .related-card-body a {
            color: var(--accent-lime);
            font-weight: 600;
            font-size: 0.9rem;
        }

        /* FOOTER */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(163, 230, 53, 0.2);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

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

        .footer a:hover {
            color: var(--accent-lime);
            text-shadow: none;
        }

        .footer h5,
        .footer h6 {
            color: #FFFFFF;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .footer hr {
            border-color: rgba(255, 255, 255, 0.08);
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 1055;
            width: 56px;
            height: 56px;
            background: rgba(7, 7, 13, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan)) 1;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 24px rgba(6, 182, 212, 0.5);
            transition: all 0.3s ease;
            animation: floatPulse 2.5s infinite;
        }

        .fab-floating i {
            font-size: 1.8rem;
            color: var(--accent-lime);
            filter: drop-shadow(0 0 8px var(--accent-lime));
        }

        .fab-floating:hover {
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(163, 230, 53, 0.7);
        }

        @keyframes floatPulse {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-5px);
            }
        }

        /* Responsive */
        @media (max-width: 992px) {
            .navbar-nav {
                background: rgba(7, 7, 13, 0.96);
                padding: 1.5rem;
                border-radius: var(--radius-md);
                border: 1px solid rgba(163, 230, 53, 0.2);
                margin-top: 1rem;
            }
            .navbar-nav .btn-outline-neon,
            .navbar-nav .btn-neon {
                margin: 0.4rem 0;
            }
            .article-body-card {
                padding: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .article-hero-banner h1 {
                font-size: 2rem;
            }
            .navbar-brand {
                font-size: 1.3rem;
            }
            .fab-floating {
                width: 50px;
                height: 50px;
                left: 1rem;
                bottom: 5rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #07070D;
            --bg-secondary: #0E0E1E;
            --accent-lime: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-neon: rgba(163, 230, 53, 0.4);
            --shadow-neon: 0 0 15px rgba(163, 230, 53, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --font-base: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --spacing-section: 5rem;
        }

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

        body {
            font-family: var(--font-base);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(163, 230, 53, 0.5);
        }

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

        button, .btn {
            font-family: inherit;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            outline: none;
        }

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* NAVBAR */
        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.15);
            padding: 0.8rem 0;
            transition: background 0.3s;
            z-index: 1050;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.6rem;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .navbar-brand i {
            background: none;
            -webkit-text-fill-color: var(--accent-lime);
            font-size: 1.9rem;
            filter: drop-shadow(0 0 10px var(--accent-lime));
        }
        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            margin: 0 0.2rem;
            padding: 0.6rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all 0.25s;
            letter-spacing: 0.01em;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent-lime) !important;
            text-shadow: 0 0 12px rgba(163, 230, 53, 0.7);
            background: rgba(163, 230, 53, 0.08);
        }
        .navbar-nav .btn-outline-neon {
            border: 1.5px solid var(--accent-lime);
            color: var(--accent-lime);
            background: transparent;
            border-radius: 3rem;
            padding: 0.5rem 1.6rem;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.3s;
            margin-left: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .navbar-nav .btn-outline-neon:hover {
            background: var(--accent-lime);
            color: #0A0A0A;
            box-shadow: var(--shadow-neon);
        }
        .navbar-nav .btn-neon {
            background: var(--accent-lime);
            color: #0A0A0A;
            border-radius: 3rem;
            padding: 0.5rem 1.8rem;
            font-weight: 800;
            font-size: 0.9rem;
            border: none;
            box-shadow: var(--shadow-neon);
            margin-left: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: all 0.3s;
        }
        .navbar-nav .btn-neon:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.7);
            transform: translateY(-2px);
        }
        .navbar-toggler {
            border: 1px solid var(--accent-lime);
            padding: 0.4rem 0.6rem;
            background: rgba(163, 230, 53, 0.1);
        }
        .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.5rem;
        }

        /* BANNER */
        .category-banner {
            background: linear-gradient(180deg, rgba(7,7,13,0.7) 0%, rgba(14,14,30,0.9) 100%), url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            min-height: 55vh;
            display: flex;
            align-items: center;
            padding-top: 5.5rem;
            padding-bottom: 3rem;
            border-bottom: 1px solid rgba(6, 182, 212, 0.25);
            position: relative;
        }
        .category-banner .banner-tag {
            background: rgba(244, 63, 94, 0.25);
            border: 1px solid var(--accent-pink);
            color: var(--accent-pink);
            display: inline-block;
            padding: 0.35rem 1.25rem;
            border-radius: 3rem;
            font-weight: 700;
            font-size: 0.8rem;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 1.5rem;
        }
        .category-banner h1 {
            font-size: clamp(2.4rem, 5.5vw, 4rem);
            font-weight: 900;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 1.2rem;
        }
        .category-banner .lead {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 700px;
            margin-bottom: 2rem;
        }
        .stats-panel {
            background: rgba(14, 14, 30, 0.8);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(6, 182, 212, 0.25);
            border-radius: var(--radius-lg);
            padding: 2rem;
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: space-around;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(to right, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-item .stat-label {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* SECTIONS */
        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        .section-dark {
            background-color: var(--bg-secondary);
        }
        .section-title {
            font-weight: 800;
            font-size: 2.2rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 3rem;
        }

        /* REWARD CARDS */
        .reward-card {
            background: rgba(14, 14, 30, 0.7);
            border: 1px solid rgba(163, 230, 53, 0.15);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: all 0.35s ease;
            height: 100%;
            backdrop-filter: blur(8px);
        }
        .reward-card:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 0 20px rgba(163, 230, 53, 0.15);
            transform: translateY(-6px);
        }
        .reward-card .day-badge {
            background: var(--accent-lime);
            color: #0A0A0A;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.4rem;
            margin: 0 auto 1.2rem;
            box-shadow: 0 0 15px rgba(163, 230, 53, 0.5);
        }
        .reward-card h5 {
            font-weight: 700;
            font-size: 1.25rem;
            margin-bottom: 0.5rem;
        }
        .reward-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 0;
        }

        /* HOW IT WORKS STEPS */
        .step-item {
            display: flex;
            gap: 1.8rem;
            margin-bottom: 2.5rem;
        }
        .step-icon {
            flex-shrink: 0;
            width: 60px;
            height: 60px;
            background: rgba(6, 182, 212, 0.1);
            border: 1px solid var(--accent-cyan);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(6, 182, 212, 0.3);
        }
        .step-content h5 {
            font-weight: 700;
            margin-bottom: 0.3rem;
        }
        .step-content p {
            color: var(--text-secondary);
            font-size: 0.98rem;
        }

        /* NEWS CARD */
        .news-card {
            background: rgba(14, 14, 30, 0.6);
            border: 1px solid rgba(148, 163, 184, 0.1);
            border-radius: var(--radius-md);
            transition: all 0.3s;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(6, 182, 212, 0.2);
        }
        .news-card .card-body {
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card .card-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0.6rem;
        }
        .news-card h6 {
            font-weight: 700;
            font-size: 1.05rem;
            line-height: 1.4;
            margin-bottom: 0.75rem;
        }
        .news-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            flex: 1;
        }

        /* FAQ */
        .accordion-item {
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.15);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.8rem;
            overflow: hidden;
        }
        .accordion-button {
            background: rgba(14, 14, 30, 0.8);
            color: var(--text-primary);
            font-weight: 700;
            box-shadow: none;
            font-size: 1.05rem;
            padding: 1.2rem 1.5rem;
            transition: 0.3s;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(163, 230, 53, 0.05);
            color: var(--accent-lime);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent-lime);
        }
        .accordion-button::after {
            filter: invert(1);
        }
        .accordion-body {
            background: rgba(7, 7, 13, 0.7);
            color: var(--text-secondary);
            padding: 1.2rem 1.5rem;
            font-size: 0.98rem;
        }

        /* CTA BAR */
        .cta-bar {
            background: linear-gradient(135deg, rgba(163, 230, 53, 0.08), rgba(6, 182, 212, 0.1));
            border: 1px solid rgba(163, 230, 53, 0.25);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            text-align: center;
        }
        .cta-bar h3 {
            font-weight: 800;
            font-size: 1.9rem;
            margin-bottom: 0.8rem;
        }
        .btn-glow {
            background: var(--accent-lime);
            color: #0A0A0A;
            font-weight: 800;
            padding: 0.8rem 2.2rem;
            border-radius: 3rem;
            box-shadow: 0 0 18px rgba(163, 230, 53, 0.55);
            transition: all 0.3s;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .btn-glow:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 24px rgba(6, 182, 212, 0.7);
            color: #fff;
            transform: translateY(-2px);
        }

        /* FOOTER */
        .footer {
            background: #0A0A0F;
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .footer a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .footer a:hover {
            color: var(--accent-lime);
        }

        /* RESPONSIVE */
        @media (max-width: 991px) {
            .navbar-collapse {
                background: rgba(7, 7, 13, 0.98);
                padding: 1.5rem;
                border-radius: var(--radius-md);
                margin-top: 0.8rem;
                border: 1px solid rgba(163, 230, 53, 0.2);
            }
            .navbar-nav .btn-outline-neon, .navbar-nav .btn-neon {
                margin: 0.4rem 0;
            }
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.8rem;
            }
            .stats-panel {
                flex-direction: column;
                gap: 1.2rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #07070D;
            --bg-secondary: #0E0E1E;
            --accent-lime: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-neon: rgba(163, 230, 53, 0.4);
            --shadow-neon: 0 0 15px rgba(163, 230, 53, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --font-base: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --spacing-section: 5rem;
        }

        body {
            font-family: var(--font-base);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(163, 230, 53, 0.5);
        }
        img {
            max-width: 100%;
            display: block;
        }

        button, .btn {
            font-family: inherit;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            outline: none;
        }

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* NAVBAR */
        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.15);
            padding: 0.8rem 0;
            transition: background 0.3s;
            z-index: 1050;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.6rem;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .navbar-brand i {
            background: none;
            -webkit-text-fill-color: var(--accent-lime);
            font-size: 1.9rem;
            filter: drop-shadow(0 0 10px var(--accent-lime));
        }
        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            margin: 0 0.2rem;
            padding: 0.6rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all 0.25s;
            letter-spacing: 0.01em;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent-lime) !important;
            text-shadow: 0 0 12px rgba(163, 230, 53, 0.7);
            background: rgba(163, 230, 53, 0.08);
        }
        .navbar-nav .btn-outline-neon {
            border: 1.5px solid var(--accent-lime);
            color: var(--accent-lime);
            background: transparent;
            border-radius: 3rem;
            padding: 0.5rem 1.6rem;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.3s;
            margin-left: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .navbar-nav .btn-outline-neon:hover {
            background: var(--accent-lime);
            color: #0A0A0A;
            box-shadow: var(--shadow-neon);
        }
        .navbar-nav .btn-neon {
            background: var(--accent-lime);
            color: #0A0A0A;
            border-radius: 3rem;
            padding: 0.5rem 1.8rem;
            font-weight: 800;
            font-size: 0.9rem;
            border: none;
            box-shadow: var(--shadow-neon);
            margin-left: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: all 0.3s;
        }
        .navbar-nav .btn-neon:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.7);
            transform: translateY(-2px);
        }
        .navbar-toggler {
            border: 1px solid var(--accent-lime);
            padding: 0.4rem 0.6rem;
            background: rgba(163, 230, 53, 0.1);
        }
        .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.5rem;
        }

        /* PAGE HERO */
        .page-hero {
            background: linear-gradient(180deg, rgba(7,7,13,0.8) 0%, rgba(14,14,30,0.92) 100%), url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            min-height: 45vh;
            display: flex;
            align-items: center;
            padding-top: 7rem;
            padding-bottom: 3.5rem;
            border-bottom: 1px solid rgba(6, 182, 212, 0.25);
            text-align: left;
        }
        .page-hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 900;
            background: linear-gradient(to right, #FFFFFF, var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
        }
        .page-hero .lead {
            color: var(--text-secondary);
            font-size: 1.2rem;
            max-width: 700px;
            margin-bottom: 1.5rem;
        }

        /* TIMELINE / ROADMAP */
        .roadmap-timeline {
            position: relative;
            padding: 3rem 0;
        }
        .timeline-bar {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 0.5rem;
            position: relative;
        }
        .timeline-bar::before {
            content: '';
            position: absolute;
            top: 24px;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-lime), var(--accent-cyan));
            opacity: 0.4;
            z-index: 0;
        }
        .timeline-node {
            position: relative;
            z-index: 2;
            background: var(--bg-secondary);
            padding: 2rem 1.5rem 1.2rem;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(163, 230, 53, 0.25);
            text-align: left;
            flex: 1 1 140px;
            min-width: 130px;
            transition: all 0.3s;
        }
        .timeline-node:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 0 25px rgba(163, 230, 53, 0.25);
            transform: translateY(-6px);
        }
        .timeline-node .dot {
            width: 18px;
            height: 18px;
            background: var(--accent-lime);
            border-radius: 50%;
            margin: -2.8rem auto 1rem;
            box-shadow: 0 0 18px var(--accent-lime);
        }
        .timeline-node h5 {
            font-weight: 800;
            font-size: 1rem;
            color: var(--text-primary);
        }
        .timeline-node p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* METRICS ROW */
        .metrics-row .metric-card {
            background: rgba(14, 14, 30, 0.85);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(6, 182, 212, 0.2);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            text-align: left;
            transition: all 0.3s;
        }
        .metrics-row .metric-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 28px rgba(6, 182, 212, 0.3);
        }
        .metric-number {
            font-size: 2.4rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* LEADERBOARD TABLE */
        .leaderboard-table {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(163, 230, 53, 0.15);
        }
        .leaderboard-table .table {
            color: var(--text-primary);
            margin-bottom: 0;
        }
        .leaderboard-table th {
            background: rgba(163, 230, 53, 0.08);
            color: var(--accent-lime);
            font-weight: 700;
            text-transform: uppercase;
            font-size: 0.8rem;
            letter-spacing: 0.05em;
            border-bottom: 1px solid var(--border-neon);
        }
        .rank-badge {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: #000;
            font-weight: 900;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 0.9rem;
        }

        /* CARDS */
        .benefit-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            padding: 2rem;
            height: 100%;
            transition: 0.3s;
        }
        .benefit-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-card);
        }

        /* CTA BANNER */
        .cta-conversion {
            background: linear-gradient(135deg, rgba(163, 230, 53, 0.1), rgba(6, 182, 212, 0.15));
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            backdrop-filter: blur(12px);
        }

        /* FOOTER */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(163, 230, 53, 0.15);
            color: var(--text-secondary);
        }
        .footer a {
            color: var(--text-muted);
        }
        .footer a:hover {
            color: var(--accent-lime);
        }
        .footer h5, .footer h6 {
            font-weight: 700;
            margin-bottom: 1rem;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 1050;
            width: 56px;
            height: 56px;
            background: rgba(7, 7, 13, 0.85);
            backdrop-filter: blur(14px);
            border: 2px solid var(--accent-cyan);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.8rem;
            box-shadow: 0 0 25px rgba(6, 182, 212, 0.5);
            transition: 0.3s;
            animation: float-fab 3s infinite ease-in-out;
        }
        .fab-floating:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 0 35px rgba(163, 230, 53, 0.7);
            transform: scale(1.08);
        }
        @keyframes float-fab {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        .notification-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            background: var(--accent-pink);
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            box-shadow: 0 0 10px var(--accent-pink);
        }

        @media (max-width: 768px) {
            .timeline-bar::before { display: none; }
            .timeline-node { margin-bottom: 1rem; }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #07070D;
            --bg-secondary: #0E0E1E;
            --accent-lime: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-neon: rgba(163, 230, 53, 0.4);
            --shadow-neon: 0 0 15px rgba(163, 230, 53, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --font-base: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --spacing-section: 5rem;
        }
        body {
            font-family: var(--font-base);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(163, 230, 53, 0.5);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, .btn {
            font-family: inherit;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            outline: none;
        }
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* NAVBAR */
        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.15);
            padding: 0.8rem 0;
            transition: background 0.3s;
            z-index: 1050;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.6rem;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .navbar-brand i {
            background: none;
            -webkit-text-fill-color: var(--accent-lime);
            font-size: 1.9rem;
            filter: drop-shadow(0 0 10px var(--accent-lime));
        }
        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            margin: 0 0.2rem;
            padding: 0.6rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all 0.25s;
            letter-spacing: 0.01em;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent-lime) !important;
            text-shadow: 0 0 12px rgba(163, 230, 53, 0.7);
            background: rgba(163, 230, 53, 0.08);
        }
        .navbar-nav .btn-outline-neon {
            border: 1.5px solid var(--accent-lime);
            color: var(--accent-lime);
            background: transparent;
            border-radius: 3rem;
            padding: 0.5rem 1.6rem;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.3s;
            margin-left: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .navbar-nav .btn-outline-neon:hover {
            background: var(--accent-lime);
            color: #0A0A0A;
            box-shadow: var(--shadow-neon);
        }
        .navbar-nav .btn-neon {
            background: var(--accent-lime);
            color: #0A0A0A;
            border-radius: 3rem;
            padding: 0.5rem 1.8rem;
            font-weight: 800;
            font-size: 0.9rem;
            border: none;
            box-shadow: var(--shadow-neon);
            margin-left: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: all 0.3s;
        }
        .navbar-nav .btn-neon:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.7);
            transform: translateY(-2px);
        }
        .navbar-toggler {
            border: 1px solid var(--accent-lime);
            padding: 0.4rem 0.6rem;
            background: rgba(163, 230, 53, 0.1);
        }
        .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.5rem;
        }

        /* BANNER INTERNAL */
        .page-banner {
            background: linear-gradient(180deg, rgba(7,7,13,0.8) 0%, rgba(14,14,30,0.9) 100%), url('/assets/images/backpic/back-7.jpg') center/cover no-repeat;
            min-height: 45vh;
            display: flex;
            align-items: center;
            position: relative;
            padding-top: 6rem;
            padding-bottom: 3rem;
            border-bottom: 1px solid rgba(6, 182, 212, 0.25);
        }
        .page-banner h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 900;
            line-height: 1.2;
            background: linear-gradient(to right, #FFFFFF, var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
        }
        .page-banner .lead {
            color: var(--text-secondary);
            font-size: 1.2rem;
            max-width: 700px;
        }

        /* RANK TABLE */
        .rank-table-wrap {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(6, 182, 212, 0.2);
            overflow-x: auto;
            box-shadow: var(--shadow-card);
        }
        .rank-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }
        .rank-table th {
            background: rgba(6, 182, 212, 0.1);
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            padding: 1.2rem 1rem;
            border-bottom: 1px solid rgba(6, 182, 212, 0.3);
        }
        .rank-table td {
            padding: 1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            vertical-align: middle;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .rank-table tr:hover td {
            background: rgba(163, 230, 53, 0.04);
        }
        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2.4rem;
            height: 2.4rem;
            border-radius: 50%;
            font-weight: 800;
            font-size: 1rem;
            background: rgba(255,255,255,0.05);
            color: var(--text-primary);
        }
        .rank-badge.top-1 {
            background: linear-gradient(135deg, #F59E0B, #FCD34D);
            color: #0A0A0A;
            box-shadow: 0 0 18px rgba(245, 158, 11, 0.6);
        }
        .rank-badge.top-2 {
            background: linear-gradient(135deg, #94A3B8, #CBD5E1);
            color: #0A0A0A;
            box-shadow: 0 0 14px rgba(148, 163, 184, 0.5);
        }
        .rank-badge.top-3 {
            background: linear-gradient(135deg, #B45309, #D97706);
            color: #FFF;
            box-shadow: 0 0 16px rgba(180, 83, 9, 0.5);
        }
        .rank-reward {
            font-weight: 700;
            color: var(--accent-lime);
            text-shadow: 0 0 10px rgba(163, 230, 53, 0.5);
        }

        /* EVENT PANEL */
        .event-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(163, 230, 53, 0.2);
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: all 0.3s;
            height: 100%;
        }
        .event-card:hover {
            border-color: var(--accent-lime);
            box-shadow: 0 0 25px rgba(163, 230, 53, 0.15);
            transform: translateY(-4px);
        }
        .event-icon {
            font-size: 2.8rem;
            color: var(--accent-cyan);
            margin-bottom: 1.2rem;
        }

        /* STAT CARD */
        .stat-box {
            background: rgba(6, 182, 212, 0.05);
            border: 1px solid rgba(6, 182, 212, 0.25);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            text-align: left;
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-lime);
            line-height: 1.2;
        }

        /* BUTTONS */
        .btn-primary-cyan {
            background: var(--accent-cyan);
            color: #0A0A0A;
            border-radius: 3rem;
            padding: 0.85rem 2.4rem;
            font-weight: 800;
            font-size: 1rem;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
            transition: all 0.3s;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            display: inline-block;
        }
        .btn-primary-cyan:hover {
            background: var(--accent-lime);
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.7);
            transform: translateY(-2px);
            color: #0A0A0A;
        }
        .btn-outline-lime {
            border: 1.5px solid var(--accent-lime);
            color: var(--accent-lime);
            background: transparent;
            border-radius: 3rem;
            padding: 0.7rem 2rem;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all 0.3s;
            text-transform: uppercase;
        }
        .btn-outline-lime:hover {
            background: var(--accent-lime);
            color: #0A0A0A;
            box-shadow: var(--shadow-neon);
        }

        /* CTA SECTION */
        .cta-section {
            background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(163, 230, 53, 0.05));
            border: 1px solid rgba(163, 230, 53, 0.2);
            border-radius: var(--radius-lg);
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 3.6rem;
            height: 3.6rem;
            border-radius: 50%;
            background: rgba(7, 7, 13, 0.85);
            backdrop-filter: blur(14px);
            border: 2px solid var(--accent-lime);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.8rem;
            box-shadow: 0 0 22px rgba(163, 230, 53, 0.5);
            transition: all 0.3s;
            cursor: pointer;
        }
        .fab-floating:hover {
            background: var(--accent-lime);
            color: #0A0A0A;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(163, 230, 53, 0.8);
        }

        /* FOOTER */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(163, 230, 53, 0.15);
        }
        .footer a {
            color: var(--text-muted);
        }
        .footer a:hover {
            color: var(--accent-lime);
        }

        /* NEWS LIST */
        .news-item {
            background: rgba(255,255,255,0.02);
            border: 1px solid rgba(255,255,255,0.04);
            border-radius: var(--radius-md);
            padding: 1.2rem;
            transition: 0.25s;
        }
        .news-item:hover {
            border-color: var(--accent-cyan);
            background: rgba(6,182,212,0.03);
        }

        @media (max-width: 768px) {
            .rank-table-wrap {
                font-size: 0.85rem;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #07070D;
            --bg-secondary: #0E0E1E;
            --accent-lime: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-neon: rgba(163, 230, 53, 0.4);
            --shadow-neon: 0 0 18px rgba(163, 230, 53, 0.45);
            --shadow-card: 0 12px 36px rgba(0, 0, 0, 0.7);
            --radius-lg: 1.5rem;
            --radius-md: 0.85rem;
            --radius-sm: 0.55rem;
            --font-base: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --spacing-section: 5rem;
        }

        body {
            font-family: var(--font-base);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        a:hover {
            color: var(--accent-lime);
            text-shadow: 0 0 10px rgba(163, 230, 53, 0.6);
        }

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

        button, .btn {
            font-family: inherit;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            outline: none;
        }

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* NAVBAR */
        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.15);
            padding: 0.8rem 0;
            transition: background 0.3s;
            z-index: 1050;
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.6rem;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .navbar-brand i {
            background: none;
            -webkit-text-fill-color: var(--accent-lime);
            font-size: 1.9rem;
            filter: drop-shadow(0 0 12px var(--accent-lime));
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            margin: 0 0.2rem;
            padding: 0.6rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all 0.25s;
            letter-spacing: 0.01em;
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--accent-lime) !important;
            text-shadow: 0 0 14px rgba(163, 230, 53, 0.7);
            background: rgba(163, 230, 53, 0.08);
        }

        .navbar-nav .btn-outline-neon {
            border: 1.5px solid var(--accent-lime);
            color: var(--accent-lime);
            background: transparent;
            border-radius: 3rem;
            padding: 0.5rem 1.6rem;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.3s;
            margin-left: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .navbar-nav .btn-outline-neon:hover {
            background: var(--accent-lime);
            color: #0A0A0A;
            box-shadow: var(--shadow-neon);
        }

        .navbar-nav .btn-neon {
            background: var(--accent-lime);
            color: #0A0A0A;
            border-radius: 3rem;
            padding: 0.5rem 1.8rem;
            font-weight: 800;
            font-size: 0.9rem;
            border: none;
            box-shadow: var(--shadow-neon);
            margin-left: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: all 0.3s;
        }

        .navbar-nav .btn-neon:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 24px rgba(6, 182, 212, 0.8);
            transform: translateY(-2px);
        }

        .navbar-toggler {
            border: 1px solid var(--accent-lime);
            padding: 0.4rem 0.6rem;
            background: rgba(163, 230, 53, 0.1);
        }

        .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.5rem;
        }

        /* HERO */
        .page-hero {
            background: linear-gradient(180deg, rgba(7,7,13,0.7) 0%, rgba(14,14,30,0.88) 100%), url('/assets/images/backpic/back-6.jpg') center/cover no-repeat;
            min-height: 65vh;
            display: flex;
            align-items: center;
            position: relative;
            padding-top: 7rem;
            padding-bottom: 4rem;
            border-bottom: 1px solid rgba(6, 182, 212, 0.25);
        }

        .page-hero .countdown-bar {
            background: rgba(0, 0, 0, 0.75);
            backdrop-filter: blur(14px);
            border: 1px solid var(--accent-cyan);
            border-radius: 4rem;
            padding: 0.6rem 2rem;
            display: inline-flex;
            align-items: center;
            gap: 1.2rem;
            color: var(--accent-lime);
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 1px;
            margin-bottom: 2.2rem;
            text-shadow: 0 0 12px var(--accent-lime);
        }

        .page-hero h1 {
            font-size: clamp(2.6rem, 6vw, 4.2rem);
            font-weight: 900;
            line-height: 1.2;
            background: linear-gradient(to right, #FFFFFF, var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1.5rem;
        }

        .page-hero .lead {
            color: var(--text-secondary);
            font-size: 1.2rem;
            max-width: 700px;
            margin-bottom: 2.5rem;
        }

        .btn-gradient-cyan {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: #0A0A0A;
            font-weight: 800;
            padding: 0.85rem 2.5rem;
            border-radius: 3rem;
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.55);
            letter-spacing: 0.8px;
            text-transform: uppercase;
        }

        .btn-gradient-cyan:hover {
            background: var(--accent-cyan);
            color: #0A0A0A;
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.9);
            transform: translateY(-3px);
        }

        .btn-outline-white {
            border: 2px solid rgba(255,255,255,0.7);
            color: white;
            padding: 0.8rem 2.5rem;
            border-radius: 3rem;
            font-weight: 700;
            background: transparent;
        }

        .btn-outline-white:hover {
            background: white;
            color: #0A0A0A;
            border-color: white;
        }

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

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

        .text-neon {
            color: var(--accent-lime);
            text-shadow: 0 0 8px rgba(163, 230, 53, 0.6);
        }

        /* STATS DASHBOARD */
        .stat-card {
            background: rgba(14, 14, 30, 0.8);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(163, 230, 53, 0.15);
            border-radius: var(--radius-lg);
            padding: 2rem;
            text-align: center;
            transition: all 0.3s;
        }

        .stat-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 25px rgba(6, 182, 212, 0.3);
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* DEVICE CARD */
        .device-card {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            border: 1px solid rgba(163, 230, 53, 0.2);
            transition: all 0.35s;
            height: 100%;
        }

        .device-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-neon);
            transform: translateY(-6px);
        }

        .device-icon {
            font-size: 3.5rem;
            color: var(--accent-cyan);
            margin-bottom: 1.5rem;
            filter: drop-shadow(0 0 10px var(--accent-cyan));
        }

        /* STEPS TIMELINE */
        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
            margin-bottom: 2.5rem;
        }

        .step-num {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: #0A0A0A;
            font-size: 1.3rem;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(163, 230, 53, 0.5);
        }

        /* NEWS LIST */
        .news-card {
            background: var(--bg-secondary);
            border: 1px solid rgba(6, 182, 212, 0.15);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s;
        }

        .news-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 28px rgba(6, 182, 212, 0.35);
        }

        .news-card img {
            height: 200px;
            object-fit: cover;
        }

        .tag-premium {
            background: linear-gradient(135deg, var(--accent-pink), #f97316);
            color: white;
            padding: 0.2rem 0.9rem;
            border-radius: 3rem;
            font-size: 0.7rem;
            font-weight: 700;
            text-transform: uppercase;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 1000;
            width: 58px;
            height: 58px;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(14px);
            border: 2px solid var(--accent-cyan);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.8rem;
            box-shadow: 0 0 24px rgba(6, 182, 212, 0.6);
            transition: all 0.3s;
            cursor: pointer;
        }

        .fab-floating:hover {
            background: var(--accent-lime);
            color: #0A0A0A;
            border-color: var(--accent-lime);
            box-shadow: 0 0 32px rgba(163, 230, 53, 0.9);
            transform: scale(1.1);
        }

        /* FAQ */
        .accordion-button:not(.collapsed) {
            background: rgba(163, 230, 53, 0.08);
            color: var(--accent-lime);
            box-shadow: none;
            border-color: var(--border-neon);
        }

        .accordion-button:focus {
            box-shadow: 0 0 12px rgba(163, 230, 53, 0.4);
            border-color: var(--accent-lime);
        }

        .accordion-item {
            background: var(--bg-secondary);
            border: 1px solid rgba(255,255,255,0.05);
            margin-bottom: 0.8rem;
            border-radius: var(--radius-md) !important;
            overflow: hidden;
        }

        /* FOOTER */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(163, 230, 53, 0.2);
        }

        .footer a {
            color: var(--text-muted);
        }

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

        /* RESPONSIVE */
        @media (max-width: 768px) {
            .page-hero {
                min-height: 55vh;
                text-align: left;
            }
            .step-item {
                flex-direction: column;
                gap: 0.8rem;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}