/* roulang page: index */
:root {
            --bg-deep: #07070D;
            --bg-panel: rgba(14, 18, 30, 0.85);
            --bg-card: rgba(20, 25, 40, 0.75);
            --accent-primary: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-glow: rgba(163, 230, 53, 0.3);
            --border-cyan: rgba(6, 182, 212, 0.4);
            --radius-lg: 1.25rem;
            --radius-md: 0.875rem;
            --radius-sm: 0.625rem;
            --shadow-neon: 0 0 18px rgba(163, 230, 53, 0.35);
            --shadow-cyan: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-pink: 0 0 15px rgba(244, 63, 94, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 30% 20%, rgba(163, 230, 53, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 65%, rgba(6, 182, 212, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 85%, rgba(244, 63, 94, 0.03) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

        a:hover {
            color: #c7ff5e;
        }

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

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

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

        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.12);
            padding: 0.75rem 0;
            z-index: 1050;
            position: fixed;
            top: 0;
            width: 100%;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .navbar.scrolled {
            background: rgba(7, 7, 13, 0.98);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.6);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-primary) !important;
            letter-spacing: -0.3px;
            transition: var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 0.45rem;
        }

        .navbar-brand:hover {
            color: #c7ff5e !important;
            text-shadow: 0 0 18px rgba(163, 230, 53, 0.4);
        }

        .navbar-brand .brand-icon {
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px rgba(163, 230, 53, 0.5));
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.925rem;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-primary) !important;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-primary);
            transition: transform var(--transition-fast);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .btn-signup-nav {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a !important;
            font-weight: 700;
            border: none;
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }

        .btn-signup-nav:hover {
            background: linear-gradient(135deg, #b8f547, #7cc514);
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.55);
            transform: translateY(-1px);
        }

        .btn-login-nav {
            color: var(--text-primary);
            font-weight: 600;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }

        .btn-login-nav:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            box-shadow: 0 0 15px rgba(163, 230, 53, 0.2);
        }

        .navbar-toggler {
            border: 1px solid rgba(163, 230, 53, 0.25);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.65rem;
            color: var(--accent-primary);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(163, 230, 53, 0.2);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(163, 230, 53, 0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 7rem 0 5rem;
            overflow: hidden;
            z-index: 1;
        }

        .hero-bg-img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: -2;
            filter: brightness(0.35) saturate(1.1);
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 40% 35%, rgba(7, 7, 13, 0.45) 0%, rgba(7, 7, 13, 0.88) 70%);
            z-index: -1;
        }

        .hero-content h1 {
            font-size: clamp(2.4rem, 5.5vw, 3.8rem);
            font-weight: 900;
            letter-spacing: -0.5px;
            line-height: 1.15;
            color: #fff;
            text-shadow: 0 0 30px rgba(163, 230, 53, 0.25);
        }

        .hero-content h1 .highlight {
            background: linear-gradient(135deg, #A3E635, #06B6D4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            filter: drop-shadow(0 0 18px rgba(6, 182, 212, 0.3));
        }

        .hero-desc {
            color: var(--text-secondary);
            font-size: 1.1rem;
            line-height: 1.7;
            max-width: 620px;
            margin-top: 1.2rem;
        }

        .hero-buttons .btn-primary-glow {
            background: var(--accent-primary);
            color: #0a0a0a;
            font-weight: 700;
            border: none;
            border-radius: 3rem;
            padding: 0.8rem 2rem;
            font-size: 1.05rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
        }

        .hero-buttons .btn-primary-glow:hover {
            box-shadow: 0 0 35px rgba(163, 230, 53, 0.6);
            transform: translateY(-2px);
        }

        .hero-buttons .btn-outline-glow {
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
            border-radius: 3rem;
            padding: 0.8rem 2rem;
            font-size: 1.05rem;
            background: transparent;
            transition: all var(--transition-smooth);
        }

        .hero-buttons .btn-outline-glow:hover {
            background: rgba(6, 182, 212, 0.12);
            box-shadow: var(--shadow-cyan);
            color: #fff;
        }

        .hero-stats {
            display: flex;
            gap: 2rem;
            margin-top: 2.2rem;
            flex-wrap: wrap;
        }

        .hero-stats .stat-item {
            background: var(--bg-panel);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(163, 230, 53, 0.15);
            border-radius: var(--radius-lg);
            padding: 1.2rem 1.5rem;
            text-align: center;
            min-width: 100px;
        }

        .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-primary);
            line-height: 1;
        }

        .stat-label {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-top: 0.4rem;
        }

        .section-title {
            font-weight: 800;
            font-size: clamp(1.7rem, 3.5vw, 2.4rem);
            letter-spacing: -0.3px;
            margin-bottom: 0.75rem;
            color: #fff;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.6;
            max-width: 680px;
            margin-bottom: 2.5rem;
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            transition: all var(--transition-smooth);
        }

        .glass-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-cyan);
            transform: translateY(-4px);
        }

        .news-list-item {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 1.2rem;
            margin-bottom: 0.85rem;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .news-list-item:hover {
            border-color: var(--accent-primary);
            box-shadow: 0 0 14px rgba(163, 230, 53, 0.15);
        }

        .news-list-item .news-thumb {
            width: 70px;
            height: 55px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }

        .news-list-item .news-info h6 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 0.2rem;
            line-height: 1.3;
        }

        .news-list-item .news-info small {
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .hot-rank-item {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 1rem 1.2rem;
            margin-bottom: 0.7rem;
            display: flex;
            align-items: center;
            gap: 0.8rem;
            transition: all var(--transition-fast);
        }

        .hot-rank-item:hover {
            border-color: var(--accent-pink);
            box-shadow: var(--shadow-pink);
        }

        .rank-num {
            font-weight: 900;
            font-size: 1.6rem;
            color: var(--accent-primary);
            width: 40px;
            text-align: center;
            flex-shrink: 0;
        }

        .feature-topic-card {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(163, 230, 53, 0.1);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.5rem;
            text-align: left;
            transition: all var(--transition-smooth);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .feature-topic-card:hover {
            border-color: var(--accent-primary);
            box-shadow: 0 0 25px rgba(163, 230, 53, 0.2);
            transform: translateY(-3px);
        }

        .feature-topic-card .topic-icon {
            font-size: 2.4rem;
            color: var(--accent-primary);
            margin-bottom: 0.8rem;
        }

        .feature-topic-card h5 {
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
        }

        .feature-topic-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        .media-partner-logo {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-md);
            padding: 1rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            filter: grayscale(1);
            transition: all var(--transition-fast);
            min-height: 70px;
        }

        .media-partner-logo:hover {
            filter: grayscale(0);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(6, 182, 212, 0.2);
        }

        .subscribe-bar {
            background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(163, 230, 53, 0.15));
            border: 1px solid rgba(163, 230, 53, 0.3);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .subscribe-bar .btn-sub {
            background: var(--accent-primary);
            color: #0a0a0a;
            font-weight: 700;
            border: none;
            border-radius: 3rem;
            padding: 0.7rem 2rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
        }

        .subscribe-bar .btn-sub:hover {
            box-shadow: 0 0 30px rgba(163, 230, 53, 0.6);
        }

        .footer {
            background: rgba(10, 12, 22, 0.95);
            border-top: 1px solid rgba(163, 230, 53, 0.1);
            padding: 3rem 0 1.8rem;
            margin-top: 3rem;
            z-index: 1;
            position: relative;
        }

        .footer-logo {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--accent-primary);
        }

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

        .footer h6 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 0.95rem;
        }

        .footer a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
            display: block;
            margin-bottom: 0.4rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 2rem;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 1100;
            width: 58px;
            height: 58px;
            background: rgba(7, 7, 13, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 2px solid transparent;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-primary);
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.4);
            background-clip: padding-box;
            background-origin: border-box;
            cursor: pointer;
            transition: all var(--transition-smooth);
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, #A3E635, #06B6D4, #F43F5E);
            z-index: -1;
            opacity: 0.8;
        }

        .fab-left:hover {
            transform: scale(1.12);
            box-shadow: 0 0 35px rgba(6, 182, 212, 0.7);
            color: #fff;
        }

        .fab-badge {
            position: absolute;
            top: -4px;
            right: -6px;
            width: 18px;
            height: 18px;
            background: var(--accent-pink);
            border-radius: 50%;
            border: 2px solid #07070D;
            animation: pulseBadge 1.8s infinite;
        }

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

        @keyframes pulseBadge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.7);
            }
            50% {
                box-shadow: 0 0 0 12px rgba(244, 63, 94, 0);
            }
        }

        @media (max-width: 992px) {
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-stats {
                gap: 1rem;
            }
            .navbar-nav {
                background: rgba(7, 7, 13, 0.98);
                backdrop-filter: blur(20px);
                border-radius: var(--radius-lg);
                padding: 1rem;
                margin-top: 0.5rem;
                border: 1px solid rgba(255, 255, 255, 0.08);
            }
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: auto;
                padding: 6rem 0 3rem;
            }
            .news-list-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .news-list-item .news-thumb {
                width: 100%;
                height: 130px;
            }
        }

        @media (max-width: 520px) {
            .hero-stats {
                flex-direction: column;
            }
            .btn-signup-nav,
            .btn-login-nav {
                padding: 0.5rem 1.2rem;
                font-size: 0.82rem;
            }
        }

/* roulang page: article */
:root {
            --bg-deep: #07070D;
            --bg-panel: rgba(14, 18, 30, 0.85);
            --bg-card: rgba(20, 25, 40, 0.75);
            --accent-primary: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-glow: rgba(163, 230, 53, 0.3);
            --border-cyan: rgba(6, 182, 212, 0.4);
            --radius-lg: 1.25rem;
            --radius-md: 0.875rem;
            --radius-sm: 0.625rem;
            --shadow-neon: 0 0 18px rgba(163, 230, 53, 0.35);
            --shadow-cyan: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-pink: 0 0 15px rgba(244, 63, 94, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 30% 20%, rgba(163, 230, 53, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 65%, rgba(6, 182, 212, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 85%, rgba(244, 63, 94, 0.03) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

        a:hover {
            color: #c7ff5e;
        }

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

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

        .container-fluid {
            max-width: 1280px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            position: relative;
            z-index: 1;
        }

        /* Navigation */
        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.12);
            padding: 0.75rem 0;
            z-index: 1050;
            position: fixed;
            top: 0;
            width: 100%;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .navbar.scrolled {
            background: rgba(7, 7, 13, 0.98);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.6);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-primary) !important;
            letter-spacing: -0.3px;
            transition: var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 0.45rem;
        }

        .navbar-brand:hover {
            color: #c7ff5e !important;
            text-shadow: 0 0 18px rgba(163, 230, 53, 0.4);
        }

        .navbar-brand .brand-icon {
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px rgba(163, 230, 53, 0.5));
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.925rem;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-primary) !important;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-primary);
            transition: transform var(--transition-fast);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .btn-signup-nav {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a !important;
            font-weight: 700;
            border: none;
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }

        .btn-signup-nav:hover {
            background: linear-gradient(135deg, #b8f547, #7cc514);
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.55);
            transform: translateY(-1px);
        }

        .btn-login-nav {
            color: var(--text-primary);
            font-weight: 600;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }

        .btn-login-nav:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            box-shadow: 0 0 15px rgba(163, 230, 53, 0.2);
        }

        .navbar-toggler {
            border: 1px solid rgba(163, 230, 53, 0.25);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.65rem;
            color: var(--accent-primary);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(163, 230, 53, 0.2);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(163, 230, 53, 0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Article Header Banner */
        .article-banner {
            position: relative;
            padding: 8rem 0 4rem;
            background: linear-gradient(180deg, rgba(163, 230, 53, 0.05) 0%, transparent 100%);
            border-bottom: 1px solid var(--border-glow);
            margin-bottom: 3rem;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 50% 0%, rgba(6, 182, 212, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }

        .article-meta {
            display: flex;
            gap: 1.5rem;
            align-items: center;
            flex-wrap: wrap;
            margin-bottom: 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--bg-card);
            padding: 0.35rem 1rem;
            border-radius: 2.5rem;
            border: 1px solid rgba(163, 230, 53, 0.15);
            font-weight: 500;
        }

        .article-meta .meta-item i {
            color: var(--accent-primary);
            font-size: 0.85rem;
        }

        .article-category-badge {
            background: linear-gradient(135deg, var(--accent-primary), #65a30d);
            color: #0a0a0a;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 0.4rem 1.2rem;
            border-radius: 2.5rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            box-shadow: 0 0 15px rgba(163, 230, 53, 0.3);
        }

        .article-category-badge:hover {
            color: #0a0a0a;
            box-shadow: 0 0 25px rgba(163, 230, 53, 0.5);
            transform: translateY(-1px);
        }

        .article-h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            margin: 1rem 0 1.5rem;
            background: linear-gradient(to right, #FFFFFF, #94A3B8);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -0.5px;
        }

        /* Article Content Section */
        .article-content-section {
            padding: 3rem 0 4rem;
        }

        .article-body {
            background: var(--bg-card);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border: 1px solid rgba(163, 230, 53, 0.12);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.75;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
            word-wrap: break-word;
        }

        .article-body h2 {
            font-size: 1.8rem;
            color: var(--text-primary);
            margin: 2rem 0 1rem;
            font-weight: 700;
            border-left: 4px solid var(--accent-primary);
            padding-left: 1.2rem;
        }

        .article-body h3 {
            font-size: 1.4rem;
            color: var(--accent-cyan);
            margin: 1.8rem 0 0.8rem;
            font-weight: 600;
        }

        .article-body p {
            margin-bottom: 1.2rem;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            border: 1px solid var(--border-glow);
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }

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

        .article-body a {
            color: var(--accent-primary);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .article-body a:hover {
            color: #c7ff5e;
        }

        .article-body blockquote {
            background: rgba(6, 182, 212, 0.06);
            border-left: 4px solid var(--accent-cyan);
            padding: 1.2rem 1.8rem;
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
            font-style: italic;
            color: var(--text-primary);
            box-shadow: 0 0 15px rgba(6, 182, 212, 0.1);
        }

        .article-not-found {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glow);
        }

        .article-not-found i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            display: block;
        }

        .article-not-found h2 {
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        .article-not-found .btn-back {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a;
            font-weight: 700;
            padding: 0.7rem 2rem;
            border-radius: 2.5rem;
            border: none;
            box-shadow: var(--shadow-neon);
            transition: var(--transition-smooth);
        }

        .article-not-found .btn-back:hover {
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.55);
            transform: translateY(-2px);
        }

        /* Sidebar Related Posts */
        .sidebar-card {
            background: var(--bg-card);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border: 1px solid rgba(163, 230, 53, 0.1);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            margin-bottom: 2rem;
            transition: var(--transition-smooth);
        }

        .sidebar-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
        }

        .sidebar-card h5 {
            font-weight: 700;
            color: var(--accent-primary);
            font-size: 1.1rem;
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .related-link {
            display: block;
            padding: 0.7rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }

        .related-link:hover {
            color: var(--accent-primary);
            padding-left: 0.5rem;
        }

        .related-link:last-child {
            border-bottom: none;
        }

        .related-link i {
            font-size: 0.7rem;
            margin-right: 0.5rem;
            color: var(--accent-cyan);
        }

        /* CTA Promo Banner */
        .cta-promo-banner {
            background: linear-gradient(135deg, rgba(163, 230, 53, 0.05), rgba(6, 182, 212, 0.05));
            border: 1px solid rgba(163, 230, 53, 0.15);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            text-align: left;
            margin: 3rem 0;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 2rem;
        }

        .cta-promo-banner h4 {
            font-weight: 700;
            font-size: 1.6rem;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }

        .cta-promo-banner p {
            color: var(--text-secondary);
            margin-bottom: 0;
            font-size: 1rem;
        }

        .btn-cta-glow {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a;
            font-weight: 800;
            border: none;
            border-radius: 2.5rem;
            padding: 0.85rem 2.5rem;
            font-size: 1rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .btn-cta-glow:hover {
            box-shadow: 0 0 32px rgba(163, 230, 53, 0.6);
            transform: translateY(-2px);
        }

        /* Footer */
        .footer {
            background: rgba(7, 7, 13, 0.98);
            border-top: 1px solid rgba(163, 230, 53, 0.12);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
            position: relative;
            z-index: 1;
        }

        .footer .footer-logo {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--accent-primary);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .footer .footer-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .footer h6 {
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            font-size: 1rem;
        }

        .footer a {
            display: block;
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 0.5rem;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-float {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #06B6D4, #A3E635);
            border-radius: 50%;
            box-shadow: var(--shadow-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-smooth);
            cursor: pointer;
            border: 2px solid rgba(6, 182, 212, 0.5);
        }

        .fab-float:hover {
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(6, 182, 212, 0.6);
        }

        .fab-float i {
            font-size: 1.6rem;
            color: #FFFFFF;
        }

        /* Responsive Adjustments */
        @media (max-width: 1024px) {
            .article-h1 {
                font-size: 2.2rem;
            }

            .article-body {
                padding: 1.8rem;
            }

            .navbar-brand {
                font-size: 1.2rem;
            }
        }

        @media (max-width: 768px) {
            .article-banner {
                padding: 6.5rem 0 2.5rem;
            }

            .article-h1 {
                font-size: 1.8rem;
            }

            .article-meta {
                gap: 0.8rem;
            }

            .article-meta .meta-item {
                font-size: 0.8rem;
                padding: 0.3rem 0.8rem;
            }

            .cta-promo-banner {
                flex-direction: column;
                text-align: left;
                padding: 1.8rem;
            }

            .btn-signup-nav,
            .btn-login-nav {
                padding: 0.45rem 1rem;
                font-size: 0.8rem;
            }

            .fab-float {
                left: 1rem;
                bottom: 5rem;
                width: 50px;
                height: 50px;
            }
        }

        @media (max-width: 520px) {
            .article-h1 {
                font-size: 1.5rem;
            }

            .article-body {
                padding: 1.2rem;
                font-size: 0.95rem;
            }

            .container-fluid {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .article-meta {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #07070D;
            --bg-panel: rgba(14, 18, 30, 0.85);
            --bg-card: rgba(20, 25, 40, 0.75);
            --accent-primary: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-glow: rgba(163, 230, 53, 0.3);
            --border-cyan: rgba(6, 182, 212, 0.4);
            --radius-lg: 1.25rem;
            --radius-md: 0.875rem;
            --radius-sm: 0.625rem;
            --shadow-neon: 0 0 18px rgba(163, 230, 53, 0.35);
            --shadow-cyan: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-pink: 0 0 15px rgba(244, 63, 94, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 30% 20%, rgba(163, 230, 53, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 65%, rgba(6, 182, 212, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 85%, rgba(244, 63, 94, 0.03) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

        a:hover {
            color: #c7ff5e;
        }

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

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

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

        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.12);
            padding: 0.75rem 0;
            z-index: 1050;
            position: fixed;
            top: 0;
            width: 100%;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .navbar.scrolled {
            background: rgba(7, 7, 13, 0.98);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.6);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-primary) !important;
            letter-spacing: -0.3px;
            transition: var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 0.45rem;
        }

        .navbar-brand:hover {
            color: #c7ff5e !important;
            text-shadow: 0 0 18px rgba(163, 230, 53, 0.4);
        }

        .navbar-brand .brand-icon {
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px rgba(163, 230, 53, 0.5));
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.925rem;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-primary) !important;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-primary);
            transition: transform var(--transition-fast);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .btn-signup-nav {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a !important;
            font-weight: 700;
            border: none;
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }

        .btn-signup-nav:hover {
            background: linear-gradient(135deg, #b8f547, #7cc514);
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.55);
            transform: translateY(-1px);
        }

        .btn-login-nav {
            color: var(--text-primary);
            font-weight: 600;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }

        .btn-login-nav:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            box-shadow: 0 0 15px rgba(163, 230, 53, 0.2);
        }

        .navbar-toggler {
            border: 1px solid rgba(163, 230, 53, 0.25);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.65rem;
            color: var(--accent-primary);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(163, 230, 53, 0.2);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(163, 230, 53, 0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .page-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(7, 7, 13, 0.95), rgba(14, 18, 30, 0.9)), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            padding: 7rem 0 4rem;
            margin-top: 0;
            border-bottom: 1px solid rgba(163, 230, 53, 0.2);
        }

        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }

        .page-banner .badge-stats {
            background: rgba(163, 230, 53, 0.1);
            border: 1px solid rgba(163, 230, 53, 0.3);
            color: var(--accent-primary);
            border-radius: 2rem;
            padding: 0.5rem 1.2rem;
            font-weight: 600;
            font-size: 0.85rem;
        }

        .section-block {
            position: relative;
            z-index: 1;
            padding: 4rem 0;
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(163, 230, 53, 0.15);
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: all var(--transition-smooth);
            height: 100%;
        }

        .glass-card:hover {
            border-color: rgba(163, 230, 53, 0.35);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }

        .tactic-step {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .step-number {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            box-shadow: 0 0 14px rgba(163, 230, 53, 0.4);
        }

        .stat-pill {
            background: rgba(6, 182, 212, 0.08);
            border: 1px solid rgba(6, 182, 212, 0.25);
            border-radius: 2rem;
            padding: 0.75rem 1.6rem;
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-cta-glow {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a;
            font-weight: 700;
            border: none;
            border-radius: 2.5rem;
            padding: 0.8rem 2.4rem;
            font-size: 1rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
            letter-spacing: 0.3px;
            display: inline-block;
            text-align: center;
        }

        .btn-cta-glow:hover {
            background: linear-gradient(135deg, #b8f547, #7cc514);
            box-shadow: 0 0 32px rgba(163, 230, 53, 0.55);
            transform: translateY(-2px);
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid rgba(6, 182, 212, 0.2);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            transition: all var(--transition-smooth);
        }

        .news-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-cyan);
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            margin-bottom: 1rem;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(163, 230, 53, 0.25);
        }

        .footer {
            background: rgba(7, 7, 13, 0.95);
            border-top: 1px solid rgba(163, 230, 53, 0.15);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            position: relative;
            z-index: 1;
        }

        .footer h6 {
            color: var(--accent-primary);
            font-weight: 700;
            margin-bottom: 1.2rem;
            font-size: 0.95rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .footer a {
            display: block;
            color: var(--text-secondary);
            padding: 0.3rem 0;
            font-size: 0.9rem;
            transition: var(--transition-fast);
        }

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

        .footer-logo {
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--accent-primary);
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 2rem;
            padding-top: 1.5rem;
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 1100;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 7, 13, 0.82);
            backdrop-filter: blur(10px);
            border: 2px solid rgba(6, 182, 212, 0.55);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.5);
            cursor: pointer;
            transition: all var(--transition-smooth);
            animation: fabPulse 2.4s infinite;
        }

        .fab-left:hover {
            background: rgba(6, 182, 212, 0.2);
            box-shadow: 0 0 32px rgba(6, 182, 212, 0.7);
            transform: scale(1.12);
        }

        @keyframes fabPulse {
            0%,
            100% {
                box-shadow: 0 0 18px rgba(6, 182, 212, 0.45);
            }
            50% {
                box-shadow: 0 0 30px rgba(6, 182, 212, 0.7);
            }
        }

        @media (max-width: 768px) {
            .page-banner h1 {
                font-size: 2rem;
            }
            .tactic-step {
                flex-direction: column;
            }
            .section-block {
                padding: 2.5rem 0;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #07070D;
            --bg-panel: rgba(14, 18, 30, 0.85);
            --bg-card: rgba(20, 25, 40, 0.75);
            --accent-primary: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-glow: rgba(163, 230, 53, 0.3);
            --border-cyan: rgba(6, 182, 212, 0.4);
            --radius-lg: 1.25rem;
            --radius-md: 0.875rem;
            --radius-sm: 0.625rem;
            --shadow-neon: 0 0 18px rgba(163, 230, 53, 0.35);
            --shadow-cyan: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-pink: 0 0 15px rgba(244, 63, 94, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 30% 20%, rgba(163, 230, 53, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 65%, rgba(6, 182, 212, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 85%, rgba(244, 63, 94, 0.03) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

        a:hover {
            color: #c7ff5e;
        }

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

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

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

        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.12);
            padding: 0.75rem 0;
            z-index: 1050;
            position: fixed;
            top: 0;
            width: 100%;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .navbar.scrolled {
            background: rgba(7, 7, 13, 0.98);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.6);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-primary) !important;
            letter-spacing: -0.3px;
            transition: var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 0.45rem;
        }

        .navbar-brand:hover {
            color: #c7ff5e !important;
            text-shadow: 0 0 18px rgba(163, 230, 53, 0.4);
        }

        .navbar-brand .brand-icon {
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px rgba(163, 230, 53, 0.5));
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.925rem;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-primary) !important;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-primary);
            transition: transform var(--transition-fast);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .btn-signup-nav {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a !important;
            font-weight: 700;
            border: none;
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }

        .btn-signup-nav:hover {
            background: linear-gradient(135deg, #b8f547, #7cc514);
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.55);
            transform: translateY(-1px);
        }

        .btn-login-nav {
            color: var(--text-primary);
            font-weight: 600;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }

        .btn-login-nav:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            box-shadow: 0 0 15px rgba(163, 230, 53, 0.2);
        }

        .navbar-toggler {
            border: 1px solid rgba(163, 230, 53, 0.25);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.65rem;
            color: var(--accent-primary);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(163, 230, 53, 0.2);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(163, 230, 53, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .page-hero {
            position: relative;
            padding: 8rem 0 3.5rem;
            background: linear-gradient(180deg, rgba(7, 7, 13, 0.95) 0%, rgba(14, 18, 30, 0.85) 100%);
            overflow: hidden;
            border-bottom: 1px solid var(--border-glow);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -15%;
            width: 650px;
            height: 650px;
            background: radial-gradient(circle, rgba(163, 230, 53, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero-content {
            position: relative;
            z-index: 2;
            max-width: 850px;
            margin: 0 auto 0 0;
            text-align: left;
        }

        .page-hero h1 {
            font-size: 2.85rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 1rem;
            letter-spacing: -0.5px;
        }

        .page-hero h1 span {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero .lead {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 720px;
        }

        .section-block {
            padding: 4rem 0;
            position: relative;
            z-index: 1;
        }

        .section-title {
            font-weight: 700;
            font-size: 1.85rem;
            margin-bottom: 0.75rem;
            color: #fff;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 2.5rem;
            max-width: 600px;
        }

        .card-strategy {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            backdrop-filter: blur(12px);
            transition: all var(--transition-smooth);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .card-strategy:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon), 0 12px 32px rgba(0, 0, 0, 0.45);
            transform: translateY(-4px);
        }

        .card-strategy .strategy-icon {
            width: 56px;
            height: 56px;
            background: rgba(163, 230, 53, 0.1);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
            color: var(--accent-primary);
            margin-bottom: 1.25rem;
            border: 1px solid rgba(163, 230, 53, 0.2);
        }

        .card-strategy h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.6rem;
        }

        .card-strategy p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            flex-grow: 1;
        }

        .stats-row {
            background: var(--bg-panel);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            backdrop-filter: blur(16px);
            margin-top: 2rem;
        }

        .stat-item {
            text-align: center;
            padding: 1rem;
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
        }

        .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 0.4rem;
            font-weight: 500;
        }

        .highlight-badge {
            background: linear-gradient(135deg, rgba(163, 230, 53, 0.15), rgba(6, 182, 212, 0.1));
            border: 1px solid var(--border-glow);
            border-radius: 2rem;
            padding: 0.3rem 1rem;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--accent-primary);
            display: inline-block;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
        }

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

        .img-wrap:hover img {
            transform: scale(1.03);
        }

        .article-list-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            margin-bottom: 1rem;
            transition: all var(--transition-fast);
            backdrop-filter: blur(8px);
            display: flex;
            gap: 1.25rem;
            align-items: center;
        }

        .article-list-item:hover {
            border-color: var(--border-cyan);
            box-shadow: 0 0 15px rgba(6, 182, 212, 0.15);
            transform: translateX(4px);
        }

        .article-list-thumb {
            width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            border: 1px solid rgba(255,255,255,0.06);
        }

        .article-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .article-list-info h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.3rem;
        }

        .article-list-info .meta {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .cta-panel {
            background: linear-gradient(135deg, rgba(163, 230, 53, 0.08), rgba(6, 182, 212, 0.05));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            text-align: center;
            backdrop-filter: blur(14px);
            box-shadow: 0 10px 35px rgba(0, 0, 0, 0.5);
        }

        .cta-panel h2 {
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
        }

        .btn-cta-glow {
            background: linear-gradient(135deg, #A3E635, #06B6D4);
            color: #07070D;
            font-weight: 700;
            border: none;
            padding: 0.9rem 2.5rem;
            border-radius: 3rem;
            font-size: 1.1rem;
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.5);
            transition: all var(--transition-smooth);
            letter-spacing: 0.3px;
        }

        .btn-cta-glow:hover {
            box-shadow: 0 0 40px rgba(163, 230, 53, 0.75);
            transform: translateY(-2px);
            color: #07070D;
        }

        .footer {
            background: rgba(7, 7, 13, 0.95);
            border-top: 1px solid rgba(163, 230, 53, 0.15);
            padding: 3rem 0 1.5rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 2rem;
        }

        .footer-logo {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--accent-primary);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .footer a {
            color: var(--text-secondary);
            display: block;
            padding: 0.25rem 0;
            transition: color var(--transition-fast);
        }

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

        .footer h6 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 0.75rem;
            font-size: 0.95rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 1.5rem;
            margin-top: 2rem;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .floating-fab {
            position: fixed;
            left: 1.25rem;
            bottom: 6rem;
            z-index: 1040;
        }

        .fab-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 7, 13, 0.9);
            backdrop-filter: blur(16px);
            border: 2px solid transparent;
            background-clip: padding-box;
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 1.6rem;
            transition: all var(--transition-smooth);
            position: relative;
            cursor: pointer;
        }

        .fab-btn::before {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan), var(--accent-pink));
            z-index: -1;
            opacity: 0.8;
        }

        .fab-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(6, 182, 212, 0.8);
        }

        @media (max-width: 991.98px) {
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .navbar-collapse {
                background: rgba(14, 18, 30, 0.95);
                backdrop-filter: blur(20px);
                padding: 1rem;
                border-radius: var(--radius-md);
                margin-top: 0.75rem;
                border: 1px solid rgba(255,255,255,0.06);
            }
        }

        @media (max-width: 767.98px) {
            .page-hero {
                padding-top: 7rem;
            }
            .page-hero h1 {
                font-size: 1.85rem;
            }
            .article-list-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-list-thumb {
                width: 100%;
                height: 150px;
            }
            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .container-fluid {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .btn-signup-nav, .btn-login-nav {
                padding: 0.45rem 1.2rem;
                font-size: 0.8rem;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #07070D;
            --bg-panel: rgba(14, 18, 30, 0.85);
            --bg-card: rgba(20, 25, 40, 0.75);
            --accent-primary: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-glow: rgba(163, 230, 53, 0.3);
            --border-cyan: rgba(6, 182, 212, 0.4);
            --radius-lg: 1.25rem;
            --radius-md: 0.875rem;
            --radius-sm: 0.625rem;
            --shadow-neon: 0 0 18px rgba(163, 230, 53, 0.35);
            --shadow-cyan: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-pink: 0 0 15px rgba(244, 63, 94, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 30% 20%, rgba(163, 230, 53, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 65%, rgba(6, 182, 212, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 85%, rgba(244, 63, 94, 0.03) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: var(--accent-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: #c7ff5e;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container-fluid {
            max-width: 1280px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.35;
            letter-spacing: -0.2px;
        }
        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.12);
            padding: 0.75rem 0;
            z-index: 1050;
            position: fixed;
            top: 0;
            width: 100%;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }
        .navbar.scrolled {
            background: rgba(7, 7, 13, 0.98);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.6);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-primary) !important;
            letter-spacing: -0.3px;
            transition: var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 0.45rem;
        }
        .navbar-brand:hover {
            color: #c7ff5e !important;
            text-shadow: 0 0 18px rgba(163, 230, 53, 0.4);
        }
        .navbar-brand .brand-icon {
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px rgba(163, 230, 53, 0.5));
        }
        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.925rem;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-primary) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-primary);
            transition: transform var(--transition-fast);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .btn-signup-nav {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a !important;
            font-weight: 700;
            border: none;
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }
        .btn-signup-nav:hover {
            background: linear-gradient(135deg, #b8f547, #7cc514);
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.55);
            transform: translateY(-1px);
        }
        .btn-login-nav {
            color: var(--text-primary);
            font-weight: 600;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }
        .btn-login-nav:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            box-shadow: 0 0 15px rgba(163, 230, 53, 0.2);
        }
        .navbar-toggler {
            border: 1px solid rgba(163, 230, 53, 0.25);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.65rem;
            color: var(--accent-primary);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(163, 230, 53, 0.2);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(163, 230, 53, 0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        main {
            position: relative;
            z-index: 1;
            padding-top: 5.5rem;
        }
        .section {
            padding: 4rem 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 2.5rem;
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(163, 230, 53, 0.15);
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: all var(--transition-smooth);
        }
        .glass-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(163, 230, 53, 0.2);
            transform: translateY(-3px);
        }
        .btn-glow {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a;
            font-weight: 700;
            border: none;
            border-radius: 3rem;
            padding: 0.75rem 2.2rem;
            font-size: 1rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
            display: inline-block;
            text-align: center;
            letter-spacing: 0.3px;
        }
        .btn-glow:hover {
            background: linear-gradient(135deg, #b8f547, #7cc514);
            box-shadow: 0 0 30px rgba(163, 230, 53, 0.6);
            transform: translateY(-2px);
            color: #0a0a0a;
        }
        .btn-outline-glow {
            color: var(--accent-primary);
            background: transparent;
            border: 1.5px solid var(--accent-primary);
            border-radius: 3rem;
            padding: 0.75rem 2.2rem;
            font-weight: 600;
            transition: all var(--transition-smooth);
            display: inline-block;
            text-align: center;
        }
        .btn-outline-glow:hover {
            background: rgba(163, 230, 53, 0.1);
            box-shadow: 0 0 20px rgba(163, 230, 53, 0.25);
            color: #c7ff5e;
        }
        .promo-card {
            background: linear-gradient(145deg, rgba(20, 25, 40, 0.9), rgba(14, 18, 30, 0.95));
            border: 1px solid rgba(163, 230, 53, 0.2);
            border-radius: var(--radius-lg);
            padding: 2rem 1.75rem;
            position: relative;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .promo-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle, rgba(163, 230, 53, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .promo-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 10px 35px rgba(0, 0, 0, 0.4), 0 0 25px rgba(163, 230, 53, 0.2);
            transform: translateY(-4px);
        }
        .promo-badge {
            background: var(--accent-pink);
            color: #fff;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 0.3rem 0.9rem;
            border-radius: 2rem;
            display: inline-block;
            margin-bottom: 0.8rem;
            box-shadow: var(--shadow-pink);
            letter-spacing: 0.5px;
        }
        .promo-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-primary);
            line-height: 1.2;
            margin-bottom: 0.4rem;
        }
        .promo-detail {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 1.2rem;
            line-height: 1.6;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.1;
            text-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
        }
        .stat-label {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
        }
        .step-item {
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            margin-bottom: 2rem;
        }
        .step-num {
            background: linear-gradient(135deg, var(--accent-primary), #65a30d);
            color: #0a0a0a;
            font-weight: 800;
            font-size: 1.3rem;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: var(--shadow-neon);
        }
        .step-content h4 {
            font-weight: 700;
            margin-bottom: 0.3rem;
            color: var(--text-primary);
        }
        .step-content p {
            color: var(--text-secondary);
            margin-bottom: 0;
            font-size: 0.95rem;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(163, 230, 53, 0.1);
            border-radius: var(--radius-md);
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
            transition: var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent-primary);
        }
        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--accent-primary);
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-secondary);
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .footer {
            background: rgba(7, 7, 13, 0.95);
            border-top: 1px solid rgba(163, 230, 53, 0.15);
            padding: 3.5rem 0 1.5rem;
            position: relative;
            z-index: 1;
            margin-top: 3rem;
        }
        .footer-logo {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--accent-primary);
            margin-bottom: 0.8rem;
        }
        .footer-desc {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer h6 {
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            font-size: 0.95rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .footer a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
            display: block;
            transition: color var(--transition-fast);
        }
        .footer a:hover {
            color: var(--accent-primary);
        }
        .footer-bottom {
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .articles-grid .card-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .articles-grid .card-item:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-cyan);
            transform: translateY(-3px);
        }
        .articles-grid .card-item img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .articles-grid .card-item .card-body {
            padding: 1.25rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .articles-grid .card-item .card-title {
            font-weight: 700;
            color: var(--text-primary);
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
        }
        .articles-grid .card-item .card-text {
            color: var(--text-secondary);
            font-size: 0.85rem;
            flex: 1;
        }
        .articles-grid .card-item .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 0.8rem;
            display: inline-block;
        }
        .fab-global {
            position: fixed;
            left: 1.2rem;
            bottom: 6rem;
            z-index: 1055;
            width: 56px;
            height: 56px;
            border-radius: 28px;
            background: rgba(7, 7, 13, 0.85);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            transition: all var(--transition-smooth);
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            animation: fabPulse 3s infinite;
        }
        .fab-global::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 28px;
            padding: 2px;
            background: linear-gradient(135deg, #A3E635, #06B6D4, #F43F5E);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            z-index: -1;
        }
        .fab-global:hover {
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(6, 182, 212, 0.7);
            color: #fff;
        }
        @keyframes fabPulse {
            0%, 100% { opacity: 0.8; }
            50% { opacity: 1; }
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.8rem;
            }
            .promo-value {
                font-size: 2rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
        }

/* roulang page: category4 */
:root {
            --bg-deep: #07070D;
            --bg-panel: rgba(14, 18, 30, 0.85);
            --bg-card: rgba(20, 25, 40, 0.75);
            --accent-primary: #A3E635;
            --accent-cyan: #06B6D4;
            --accent-pink: #F43F5E;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-glow: rgba(163, 230, 53, 0.3);
            --border-cyan: rgba(6, 182, 212, 0.4);
            --radius-lg: 1.25rem;
            --radius-md: 0.875rem;
            --radius-sm: 0.625rem;
            --shadow-neon: 0 0 18px rgba(163, 230, 53, 0.35);
            --shadow-cyan: 0 0 20px rgba(6, 182, 212, 0.45);
            --shadow-pink: 0 0 15px rgba(244, 63, 94, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 30% 20%, rgba(163, 230, 53, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 65%, rgba(6, 182, 212, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 85%, rgba(244, 63, 94, 0.03) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

        a:hover {
            color: #c7ff5e;
        }

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

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

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

        .navbar {
            background: rgba(7, 7, 13, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(163, 230, 53, 0.12);
            padding: 0.75rem 0;
            z-index: 1050;
            position: fixed;
            top: 0;
            width: 100%;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .navbar.scrolled {
            background: rgba(7, 7, 13, 0.98);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.6);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-primary) !important;
            letter-spacing: -0.3px;
            transition: var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 0.45rem;
        }

        .navbar-brand:hover {
            color: #c7ff5e !important;
            text-shadow: 0 0 18px rgba(163, 230, 53, 0.4);
        }

        .navbar-brand .brand-icon {
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px rgba(163, 230, 53, 0.5));
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.925rem;
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-primary) !important;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-primary);
            transition: transform var(--transition-fast);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .btn-signup-nav {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a !important;
            font-weight: 700;
            border: none;
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }

        .btn-signup-nav:hover {
            background: linear-gradient(135deg, #b8f547, #7cc514);
            box-shadow: 0 0 28px rgba(163, 230, 53, 0.55);
            transform: translateY(-1px);
            color: #0a0a0a !important;
        }

        .btn-login-nav {
            color: var(--text-primary);
            font-weight: 600;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            border-radius: 2.5rem;
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
            letter-spacing: 0.2px;
        }

        .btn-login-nav:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            box-shadow: 0 0 15px rgba(163, 230, 53, 0.2);
        }

        .navbar-toggler {
            border: 1px solid rgba(163, 230, 53, 0.25);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.65rem;
            color: var(--accent-primary);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(163, 230, 53, 0.2);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(163, 230, 53, 0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        main {
            position: relative;
            z-index: 1;
            padding-top: 85px;
        }

        .section-padding {
            padding: 3.5rem 0;
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            transition: all var(--transition-smooth);
        }

        .btn-glow {
            background: linear-gradient(135deg, #A3E635, #65a30d);
            color: #0a0a0a;
            font-weight: 700;
            border: none;
            border-radius: 2.5rem;
            padding: 0.7rem 2rem;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
            text-transform: uppercase;
            letter-spacing: 0.4px;
            font-size: 0.9rem;
        }

        .btn-glow:hover {
            background: linear-gradient(135deg, #b8f547, #7cc514);
            box-shadow: 0 0 30px rgba(163, 230, 53, 0.6);
            transform: translateY(-2px);
            color: #0a0a0a;
        }

        .section-title {
            font-weight: 800;
            font-size: 2rem;
            color: var(--text-primary);
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }

        .section-title span {
            color: var(--accent-primary);
        }

        .divider-glow {
            height: 3px;
            width: 80px;
            background: var(--accent-primary);
            box-shadow: 0 0 12px var(--accent-primary);
            border-radius: 5px;
            margin-bottom: 2rem;
        }

        .footer {
            background: rgba(3, 3, 15, 0.9);
            border-top: 1px solid rgba(163, 230, 53, 0.15);
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
            position: relative;
            z-index: 1;
        }

        .footer h6 {
            color: var(--accent-primary);
            font-weight: 700;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            font-size: 0.9rem;
        }

        .footer a {
            display: block;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

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

        .footer-logo {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--accent-primary);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
        }

        .footer-bottom {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .fab-container {
            position: fixed;
            left: 1.2rem;
            bottom: 6rem;
            z-index: 1040;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 7, 13, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.5);
            animation: fabPulse 2.5s infinite alternate;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }

        .fab-container::before {
            content: '';
            position: absolute;
            inset: -3px;
            z-index: -1;
            background: linear-gradient(135deg, #A3E635, #06B6D4, #F43F5E);
            border-radius: 50%;
            opacity: 0.7;
        }

        .fab-container i {
            font-size: 1.6rem;
            color: var(--accent-primary);
            filter: drop-shadow(0 0 8px rgba(163, 230, 53, 0.6));
            transition: transform var(--transition-fast);
        }

        .fab-container:hover {
            transform: scale(1.12);
            box-shadow: 0 0 32px rgba(6, 182, 212, 0.7);
        }

        .fab-container:hover i {
            transform: rotate(360deg);
            color: #fff;
        }

        .fab-container:active {
            transform: scale(0.94);
        }

        @keyframes fabPulse {
            0% {
                box-shadow: 0 0 18px rgba(6, 182, 212, 0.4);
            }
            100% {
                box-shadow: 0 0 30px rgba(6, 182, 212, 0.75);
            }
        }

        .ranking-badge {
            background: linear-gradient(135deg, #F43F5E, #ec4899);
            color: #fff;
            font-weight: 800;
            font-size: 0.75rem;
            padding: 0.2rem 0.7rem;
            border-radius: 2rem;
            letter-spacing: 0.3px;
            box-shadow: 0 0 10px rgba(244, 63, 94, 0.5);
        }

        .progress-custom {
            height: 8px;
            border-radius: 4px;
            background: rgba(255, 255, 255, 0.08);
        }

        .progress-custom .progress-bar {
            background: linear-gradient(90deg, #A3E635, #06B6D4);
            border-radius: 4px;
            box-shadow: 0 0 8px rgba(163, 230, 53, 0.45);
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(7, 7, 13, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: var(--radius-md);
                padding: 1rem;
                margin-top: 0.5rem;
                border: 1px solid rgba(163, 230, 53, 0.15);
            }
            .navbar-nav {
                gap: 0 !important;
            }
            .d-flex.gap-2 {
                flex-direction: column;
                width: 100%;
                margin-top: 0.75rem;
            }
            .btn-login-nav,
            .btn-signup-nav {
                width: 100%;
                text-align: center;
            }
        }

/* 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}