/* roulang page: index */
:root {
            --bg-primary: #0B3C25;
            --bg-secondary: #062315;
            --accent-primary: #FFCC00;
            --accent-secondary: #32CD32;
            --text-primary: #FFFDF0;
            --text-secondary: #C5E2D2;
            --card-bg: rgba(6, 35, 21, 0.9);
            --card-border: rgba(255, 204, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 204, 0, 0.2);
            --shadow-elevated: 0 12px 28px rgba(0, 0, 0, 0.5);
            --radius-card: 1.25rem;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: 'Segoe UI', 'Roboto', 'Inter', sans-serif;
            line-height: 1.6;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        .container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
        header { background: var(--bg-secondary); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255, 204, 0, 0.15); position: sticky; top: 0; z-index: 50; }
        .navbar { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 0; min-height: 64px; }
        .logo-text { font-size: 1.35rem; font-weight: 800; color: var(--accent-primary); letter-spacing: -0.5px; line-height: 1.2; max-width: 320px; }
        .nav-links { display: flex; align-items: center; gap: 2rem; }
        .nav-links a { color: var(--text-secondary); text-decoration: none; font-weight: 600; font-size: 0.95rem; padding: 0.5rem 0; position: relative; transition: color 0.25s; }
        .nav-links a:hover, .nav-links a.active { color: var(--accent-primary); }
        .nav-links a.active::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 100%; height: 2px; background: var(--accent-primary); border-radius: 2px; }
        .nav-actions { display: flex; align-items: center; gap: 0.75rem; }
        .btn-outline { background: transparent; border: 1.5px solid var(--accent-primary); color: var(--accent-primary); padding: 0.5rem 1.5rem; border-radius: 2rem; font-weight: 700; font-size: 0.875rem; cursor: pointer; transition: var(--transition-smooth); text-decoration: none; display: inline-flex; align-items: center; }
        .btn-outline:hover { background: var(--accent-primary); color: var(--bg-secondary); }
        .btn-solid { background: var(--accent-primary); border: none; color: var(--bg-secondary); padding: 0.5rem 1.75rem; border-radius: 2rem; font-weight: 700; font-size: 0.875rem; cursor: pointer; transition: var(--transition-smooth); text-decoration: none; display: inline-flex; align-items: center; box-shadow: var(--shadow-gold); }
        .btn-solid:hover { background: #e6b800; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(255, 204, 0, 0.35); }
        .mobile-menu-btn { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.75rem; cursor: pointer; }
        .mobile-nav { display: none; position: fixed; top: 0; right: 0; width: 280px; height: 100vh; background: var(--bg-secondary); z-index: 100; padding: 2rem; flex-direction: column; gap: 1.5rem; transform: translateX(100%); transition: transform 0.35s ease; }
        .mobile-nav.open { transform: translateX(0); }
        .mobile-nav a { color: var(--text-secondary); text-decoration: none; font-weight: 600; font-size: 1.1rem; display: block; padding: 0.5rem 0; }
        .overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 99; }
        .overlay.open { display: block; }
        section { padding: 3.5rem 0; }
        .hero-section { background: linear-gradient(135deg, #062315 0%, #0B3C25 60%, #0A2E1C 100%); padding: 4rem 0 3rem; position: relative; overflow: hidden; }
        .hero-section::before { content: ''; position: absolute; top: -50px; right: -50px; width: 300px; height: 300px; background: radial-gradient(circle, rgba(255,204,0,0.15) 0%, transparent 70%); border-radius: 50%; z-index: 0; }
        .progress-ring-wrap { position: relative; display: flex; align-items: center; justify-content: center; }
        .progress-ring { transform: rotate(-90deg); }
        .progress-ring .bg { stroke: rgba(197, 226, 210, 0.2); }
        .progress-ring .fill { stroke: var(--accent-primary); stroke-linecap: round; transition: stroke-dashoffset 1.2s ease; }
        .card-custom { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-card); padding: 1.75rem; backdrop-filter: blur(10px); transition: var(--transition-smooth); }
        .card-custom:hover { border-color: rgba(255, 204, 0, 0.6); box-shadow: var(--shadow-elevated); transform: translateY(-3px); }
        .fab-left { position: fixed; left: 1.5rem; bottom: 6rem; z-index: 49; width: 56px; height: 56px; background: var(--bg-secondary); border: 2px solid var(--accent-primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 18px rgba(255,204,0,0.25); cursor: pointer; transition: var(--transition-smooth); opacity: 0.7; animation: floatFab 3s infinite ease-in-out; }
        .fab-left:hover { opacity: 1; transform: scale(1.1); box-shadow: 0 6px 26px rgba(255,204,0,0.45); }
        .fab-left i { font-size: 1.5rem; color: var(--accent-primary); }
        @keyframes floatFab { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
        .item-badge { background: linear-gradient(135deg, var(--accent-primary), #e6b800); color: var(--bg-secondary); font-weight: 700; font-size: 0.7rem; padding: 0.2rem 0.7rem; border-radius: 1rem; display: inline-block; }
        .footer { background: var(--bg-secondary); border-top: 1px solid rgba(255,204,0,0.15); padding: 2.5rem 0 1.5rem; color: var(--text-secondary); font-size: 0.9rem; }
        .footer a { color: var(--accent-primary); text-decoration: none; }
        @media (max-width: 1024px) {
            .container { padding: 0 1.25rem; }
            .nav-links { gap: 1.2rem; }
            .logo-text { font-size: 1.1rem; max-width: 250px; }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .nav-actions .btn-outline, .nav-actions .btn-solid { padding: 0.4rem 1rem; font-size: 0.8rem; }
            .mobile-menu-btn { display: block; }
            .mobile-nav { display: flex; }
            .logo-text { font-size: 1rem; max-width: 220px; }
            .hero-section { padding: 2.5rem 0 2rem; }
            section { padding: 2.5rem 0; }
            .fab-left { left: 1rem; bottom: 5rem; width: 48px; height: 48px; }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B3C25;
            --bg-secondary: #062315;
            --accent-primary: #FFCC00;
            --accent-secondary: #32CD32;
            --text-primary: #FFFDF0;
            --text-secondary: #C5E2D2;
            --card-bg: rgba(6, 35, 21, 0.9);
            --card-border: rgba(255, 204, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 204, 0, 0.2);
            --shadow-elevated: 0 12px 28px rgba(0, 0, 0, 0.5);
            --radius-card: 1.25rem;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Segoe UI', 'Roboto', 'Inter', sans-serif;
            line-height: 1.7;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        header {
            background: var(--bg-secondary);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 204, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 50;
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            min-height: 64px;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--accent-primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            max-width: 320px;
            text-decoration: none;
            display: inline-block;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.25s;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--accent-primary);
            color: var(--accent-primary);
            padding: 0.5rem 1.5rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.875rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
        }
        .btn-outline:hover {
            background: var(--accent-primary);
            color: var(--bg-secondary);
        }
        .btn-solid {
            background: var(--accent-primary);
            border: none;
            color: var(--bg-secondary);
            padding: 0.5rem 1.75rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.875rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            box-shadow: var(--shadow-gold);
        }
        .btn-solid:hover {
            background: #e6b800;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(255, 204, 0, 0.35);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.75rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            height: 100vh;
            background: var(--bg-secondary);
            z-index: 100;
            padding: 2rem;
            flex-direction: column;
            gap: 1.5rem;
            transform: translateX(100%);
            transition: transform 0.35s ease;
        }
        .mobile-nav.open {
            transform: translateX(0);
        }
        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            display: block;
            padding: 0.5rem 0;
        }
        .mobile-nav .btn-outline,
        .mobile-nav .btn-solid {
            width: 100%;
            justify-content: center;
            margin-top: 0.5rem;
        }
        section {
            padding: 3.5rem 0;
        }
        .hero-section {
            background: linear-gradient(135deg, #062315 0%, #0B3C25 60%, #0A2E1C 100%);
            padding: 4rem 0 3rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255,204,0,0.15) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .card-custom {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 1.75rem;
            backdrop-filter: blur(10px);
            transition: var(--transition-smooth);
        }
        .card-custom:hover {
            border-color: rgba(255, 204, 0, 0.6);
            box-shadow: var(--shadow-elevated);
            transform: translateY(-3px);
        }
        .item-badge {
            background: linear-gradient(135deg, var(--accent-primary), #e6b800);
            color: var(--bg-secondary);
            font-weight: 700;
            font-size: 0.7rem;
            padding: 0.2rem 0.7rem;
            border-radius: 1rem;
            display: inline-block;
        }
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255,204,0,0.15);
            padding: 2.5rem 0 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .footer a {
            color: var(--accent-primary);
            text-decoration: none;
        }
        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(6, 35, 21, 0.85);
            backdrop-filter: blur(12px);
            border: 2px solid #FFCC00;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            cursor: pointer;
            transition: all 0.3s ease;
            animation: floatFab 3s ease-in-out infinite;
        }
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
            opacity: 1;
        }
        .fab-left i {
            font-size: 1.5rem;
            color: #FFCC00;
        }
        @keyframes floatFab {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-8px); }
        }
        .step-number {
            background: var(--accent-primary);
            color: var(--bg-secondary);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .video-placeholder {
            position: relative;
            width: 100%;
            background: #000;
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 16/9;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
        }
        .video-placeholder:hover {
            box-shadow: var(--shadow-elevated);
            transform: scale(1.02);
        }
        .play-btn {
            width: 80px;
            height: 80px;
            background: rgba(255, 204, 0, 0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2;
            transition: var(--transition-smooth);
            box-shadow: 0 0 30px rgba(255, 204, 0, 0.5);
        }
        .play-btn i {
            font-size: 2rem;
            color: var(--bg-secondary);
            margin-left: 5px;
        }
        .video-placeholder:hover .play-btn {
            background: #e6b800;
            transform: scale(1.1);
            box-shadow: 0 0 40px rgba(255, 204, 0, 0.7);
        }
        @media (max-width: 1024px) {
            .container {
                padding: 0 1.25rem;
            }
            .nav-links {
                gap: 1.2rem;
            }
            .logo-text {
                font-size: 1.1rem;
                max-width: 250px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-actions .btn-outline,
            .nav-actions .btn-solid {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .mobile-menu-btn {
                display: block;
            }
            .mobile-nav {
                display: flex;
            }
            .logo-text {
                font-size: 1rem;
                max-width: 220px;
            }
            .hero-section {
                padding: 2.5rem 0 2rem;
            }
            section {
                padding: 2.5rem 0;
            }
            .fab-left {
                left: 1rem;
                bottom: 5rem;
                width: 48px;
                height: 48px;
            }
            .fab-left i {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 0.85rem;
                max-width: 180px;
            }
            .nav-actions {
                gap: 0.4rem;
            }
            .btn-outline,
            .btn-solid {
                padding: 0.35rem 0.8rem;
                font-size: 0.7rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B3C25;
            --bg-secondary: #062315;
            --accent-primary: #FFCC00;
            --accent-secondary: #32CD32;
            --text-primary: #FFFDF0;
            --text-secondary: #C5E2D2;
            --card-bg: rgba(6, 35, 21, 0.9);
            --card-border: rgba(255, 204, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 204, 0, 0.2);
            --shadow-elevated: 0 12px 28px rgba(0, 0, 0, 0.5);
            --radius-card: 1.25rem;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Segoe UI', 'Roboto', 'Inter', sans-serif;
            line-height: 1.6;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:hover {
            color: #e6b800;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        header {
            background: var(--bg-secondary);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 204, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 50;
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            min-height: 64px;
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--accent-primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            max-width: 320px;
            text-decoration: none;
        }

        .logo-text:hover {
            color: #e6b800;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.25s;
        }

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

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--accent-primary);
            color: var(--accent-primary);
            padding: 0.5rem 1.5rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.875rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
        }

        .btn-outline:hover {
            background: var(--accent-primary);
            color: var(--bg-secondary);
        }

        .btn-solid {
            background: var(--accent-primary);
            border: none;
            color: var(--bg-secondary);
            padding: 0.5rem 1.75rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.875rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            box-shadow: var(--shadow-gold);
        }

        .btn-solid:hover {
            background: #e6b800;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(255, 204, 0, 0.35);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.75rem;
            cursor: pointer;
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            height: 100vh;
            background: var(--bg-secondary);
            z-index: 100;
            padding: 2rem;
            flex-direction: column;
            gap: 1.5rem;
            transform: translateX(100%);
            transition: transform 0.35s ease;
        }

        .mobile-nav.open {
            transform: translateX(0);
        }

        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            display: block;
            padding: 0.5rem 0;
        }

        .mobile-nav .btn-outline,
        .mobile-nav .btn-solid {
            width: 100%;
            justify-content: center;
            margin-top: 0.5rem;
        }

        section {
            padding: 3.5rem 0;
        }

        .article-hero {
            background: linear-gradient(135deg, #062315 0%, #0B3C25 60%, #0A2E1C 100%);
            padding: 3rem 0;
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 204, 0, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .article-hero-content {
            position: relative;
            z-index: 1;
        }

        .article-hero-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-elevated);
            border: 1px solid var(--card-border);
        }

        .article-body {
            max-width: 780px;
            margin: 2rem auto 0;
            font-size: 1.05rem;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .article-body h2 {
            font-size: 1.8rem;
            color: var(--accent-primary);
            margin: 2.5rem 0 1rem;
            font-weight: 700;
        }

        .article-body h3 {
            font-size: 1.4rem;
            color: var(--text-primary);
            margin: 2rem 0 0.75rem;
            font-weight: 700;
        }

        .article-body p {
            margin-bottom: 1.25rem;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 1.25rem;
            padding-left: 2rem;
        }

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

        .article-body strong {
            color: var(--accent-primary);
        }

        .article-body img {
            border-radius: 0.75rem;
            margin: 1.5rem 0;
            box-shadow: var(--shadow-gold);
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent-primary);
            padding-left: 1.5rem;
            margin: 1.5rem 0;
            font-style: italic;
            color: var(--text-secondary);
            background: rgba(255, 204, 0, 0.05);
            padding: 1rem 1.5rem;
            border-radius: 0 0.75rem 0.75rem 0;
        }

        .card-custom {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 1.75rem;
            backdrop-filter: blur(10px);
            transition: var(--transition-smooth);
        }

        .card-custom:hover {
            border-color: rgba(255, 204, 0, 0.6);
            box-shadow: var(--shadow-elevated);
            transform: translateY(-3px);
        }

        .item-badge {
            background: linear-gradient(135deg, var(--accent-primary), #e6b800);
            color: var(--bg-secondary);
            font-weight: 700;
            font-size: 0.7rem;
            padding: 0.2rem 0.7rem;
            border-radius: 1rem;
            display: inline-block;
        }

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

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

        .not-found h2 {
            font-size: 2rem;
            color: var(--accent-primary);
            margin-bottom: 0.75rem;
        }

        .not-found p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }

        .related-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 204, 0, 0.1);
            border-bottom: 1px solid rgba(255, 204, 0, 0.1);
        }

        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 204, 0, 0.15);
            padding: 2.5rem 0 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

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

        .footer ul {
            list-style: none;
        }

        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: var(--bg-secondary);
            border: 2px solid var(--accent-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            cursor: pointer;
            transition: var(--transition-smooth);
            opacity: 0.7;
            animation: float 3s ease-in-out infinite;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
        }

        .fab-left i {
            font-size: 1.6rem;
            color: var(--accent-primary);
        }

        .fab-left .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid var(--bg-secondary);
            animation: pulse 2s infinite;
        }

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

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 1.25rem;
            }
            .nav-links {
                gap: 1.2rem;
            }
            .logo-text {
                font-size: 1.1rem;
                max-width: 250px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-actions .btn-outline,
            .nav-actions .btn-solid {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .mobile-menu-btn {
                display: block;
            }
            .mobile-nav {
                display: flex;
            }
            .logo-text {
                font-size: 1rem;
                max-width: 220px;
            }
            section {
                padding: 2.5rem 0;
            }
            .article-hero {
                padding: 2rem 0;
            }
            .article-body {
                font-size: 0.95rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .fab-left {
                left: 1rem;
                bottom: 5rem;
                width: 48px;
                height: 48px;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 0.85rem;
                max-width: 180px;
            }
            .nav-actions .btn-outline,
            .nav-actions .btn-solid {
                padding: 0.3rem 0.75rem;
                font-size: 0.7rem;
            }
            .article-body {
                font-size: 0.9rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
        }

/* roulang page: category2 */
/* ===== Design System Variables ===== */
        :root {
            --bg-primary: #0B3C25;
            --bg-secondary: #062315;
            --accent-primary: #FFCC00;
            --accent-secondary: #32CD32;
            --text-primary: #FFFDF0;
            --text-secondary: #C5E2D2;
            --card-bg: rgba(6, 35, 21, 0.9);
            --card-border: rgba(255, 204, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 204, 0, 0.2);
            --shadow-elevated: 0 12px 28px rgba(0, 0, 0, 0.5);
            --radius-card: 1.25rem;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        /* ===== Base Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: 'Segoe UI', 'Roboto', 'Inter', sans-serif;
            line-height: 1.6;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }
        
        /* ===== Layout Container ===== */
        .container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
        
        /* ===== Header & Navigation ===== */
        header {
            background: var(--bg-secondary);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 204, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 50;
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            min-height: 64px;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--accent-primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            max-width: 320px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.25s;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--accent-primary);
            color: var(--accent-primary);
            padding: 0.5rem 1.5rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.875rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
        }
        .btn-outline:hover {
            background: var(--accent-primary);
            color: var(--bg-secondary);
        }
        .btn-solid {
            background: var(--accent-primary);
            border: none;
            color: var(--bg-secondary);
            padding: 0.5rem 1.75rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.875rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            box-shadow: var(--shadow-gold);
        }
        .btn-solid:hover {
            background: #e6b800;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(255, 204, 0, 0.35);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.75rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            height: 100vh;
            background: var(--bg-secondary);
            z-index: 100;
            padding: 2rem;
            flex-direction: column;
            gap: 1.5rem;
            transform: translateX(100%);
            transition: transform 0.35s ease;
        }
        .mobile-nav.open {
            transform: translateX(0);
        }
        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            display: block;
            padding: 0.5rem 0;
        }
        
        /* ===== Section Spacing ===== */
        section {
            padding: 3.5rem 0;
        }
        
        /* ===== Hero Banner ===== */
        .hero-section {
            background: linear-gradient(135deg, #062315 0%, #0B3C25 60%, #0A2E1C 100%);
            padding: 4rem 0 3rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255,204,0,0.15) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        
        /* ===== Cards ===== */
        .card-custom {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 1.75rem;
            backdrop-filter: blur(10px);
            transition: var(--transition-smooth);
        }
        .card-custom:hover {
            border-color: rgba(255, 204, 0, 0.6);
            box-shadow: var(--shadow-elevated);
            transform: translateY(-3px);
        }
        .item-badge {
            background: linear-gradient(135deg, var(--accent-primary), #e6b800);
            color: var(--bg-secondary);
            font-weight: 700;
            font-size: 0.7rem;
            padding: 0.2rem 0.7rem;
            border-radius: 1rem;
            display: inline-block;
        }
        
        /* ===== Tip Card Specific ===== */
        .tip-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 2rem;
            backdrop-filter: blur(10px);
            transition: var(--transition-smooth);
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
        }
        .tip-card:hover {
            border-color: rgba(255, 204, 0, 0.6);
            box-shadow: var(--shadow-elevated);
            transform: translateY(-2px);
        }
        .tip-icon {
            flex-shrink: 0;
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--accent-primary), #e6b800);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--bg-secondary);
        }
        
        /* ===== Coupon Wall Style Hero Cards ===== */
        .coupon-card {
            background: linear-gradient(135deg, var(--accent-primary), #ffb300);
            border-radius: 1.5rem;
            padding: 2rem;
            color: var(--bg-secondary);
            box-shadow: 0 8px 32px rgba(255, 204, 0, 0.35);
            transition: var(--transition-smooth);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        .coupon-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 16px 40px rgba(255, 204, 0, 0.5);
        }
        .coupon-card.featured {
            transform: scale(1.05);
            z-index: 2;
            background: linear-gradient(135deg, #ffd700, #ffaa00);
        }
        .coupon-dashed {
            border-top: 2px dashed rgba(0,0,0,0.15);
            padding-top: 1rem;
            margin-top: 1rem;
        }
        
        /* ===== Footer ===== */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255,204,0,0.15);
            padding: 2.5rem 0 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .footer a { color: var(--accent-primary); }
        
        /* ===== FAB ===== */
        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--accent-primary), #e6b800);
            border: 2px solid #ffd700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--bg-secondary);
            box-shadow: 0 4px 20px rgba(255,215,0,0.3);
            z-index: 40;
            cursor: pointer;
            transition: var(--transition-smooth);
            animation: pulse 2s infinite;
        }
        .fab-left:hover {
            transform: scale(1.1);
            animation: none;
        }
        @keyframes pulse {
            0%, 100% { box-shadow: 0 4px 20px rgba(255,215,0,0.3); }
            50% { box-shadow: 0 4px 35px rgba(255,215,0,0.6); transform: scale(1.03); }
        }
        
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .container { padding: 0 1.25rem; }
            .nav-links { gap: 1.2rem; }
            .logo-text { font-size: 1.1rem; max-width: 250px; }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .nav-actions .btn-outline, .nav-actions .btn-solid { padding: 0.4rem 1rem; font-size: 0.8rem; }
            .mobile-menu-btn { display: block; }
            .mobile-nav { display: flex; }
            .logo-text { font-size: 1rem; max-width: 220px; }
            .hero-section { padding: 2.5rem 0 2rem; }
            section { padding: 2.5rem 0; }
            .fab-left { left: 1rem; bottom: 5rem; width: 48px; height: 48px; }
            .tip-card { flex-direction: column; gap: 1rem; }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B3C25;
            --bg-secondary: #062315;
            --accent-primary: #FFCC00;
            --accent-secondary: #32CD32;
            --text-primary: #FFFDF0;
            --text-secondary: #C5E2D2;
            --card-bg: rgba(6, 35, 21, 0.9);
            --card-border: rgba(255, 204, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 204, 0, 0.2);
            --shadow-elevated: 0 12px 28px rgba(0, 0, 0, 0.5);
            --radius-card: 1.25rem;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Segoe UI', 'Roboto', 'Inter', sans-serif;
            line-height: 1.6;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        header {
            background: var(--bg-secondary);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 204, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 50;
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            min-height: 64px;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--accent-primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            max-width: 320px;
            text-decoration: none;
            display: inline-block;
        }
        .logo-text:hover {
            color: #e6b800;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.25s;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--accent-primary);
            color: var(--accent-primary);
            padding: 0.5rem 1.5rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.875rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
        }
        .btn-outline:hover {
            background: var(--accent-primary);
            color: var(--bg-secondary);
        }
        .btn-solid {
            background: var(--accent-primary);
            border: none;
            color: var(--bg-secondary);
            padding: 0.5rem 1.75rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.875rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            box-shadow: var(--shadow-gold);
        }
        .btn-solid:hover {
            background: #e6b800;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(255, 204, 0, 0.35);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.75rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            height: 100vh;
            background: var(--bg-secondary);
            z-index: 100;
            padding: 2rem;
            flex-direction: column;
            gap: 1.5rem;
            transform: translateX(100%);
            transition: transform 0.35s ease;
        }
        .mobile-nav.open {
            transform: translateX(0);
        }
        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            display: block;
            padding: 0.5rem 0;
        }
        .mobile-nav .btn-outline,
        .mobile-nav .btn-solid {
            display: block;
            text-align: center;
            margin-top: 0.5rem;
        }
        section {
            padding: 3.5rem 0;
        }
        .page-hero {
            background: linear-gradient(135deg, #062315 0%, #0B3C25 60%, #0A2E1C 100%);
            padding: 4rem 0 3rem;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 204, 0, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .card-custom {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 1.75rem;
            backdrop-filter: blur(10px);
            transition: var(--transition-smooth);
        }
        .card-custom:hover {
            border-color: rgba(255, 204, 0, 0.6);
            box-shadow: var(--shadow-elevated);
            transform: translateY(-3px);
        }
        .item-badge {
            background: linear-gradient(135deg, var(--accent-primary), #e6b800);
            color: var(--bg-secondary);
            font-weight: 700;
            font-size: 0.7rem;
            padding: 0.2rem 0.7rem;
            border-radius: 1rem;
            display: inline-block;
        }
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 204, 0, 0.15);
            padding: 2.5rem 0 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .footer a {
            color: var(--accent-primary);
            text-decoration: none;
            transition: opacity 0.2s;
        }
        .footer a:hover {
            opacity: 0.8;
        }
        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 49;
            width: 56px;
            height: 56px;
            background: var(--card-bg);
            border: 2px solid var(--accent-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 204, 0, 0.3);
            transition: var(--transition-smooth);
            animation: float 3s ease-in-out infinite;
        }
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 28px rgba(255, 204, 0, 0.5);
            background: var(--accent-primary);
            color: var(--bg-secondary);
        }
        .fab-left i {
            font-size: 1.8rem;
            color: var(--accent-primary);
            transition: var(--transition-smooth);
        }
        .fab-left:hover i {
            color: var(--bg-secondary);
        }
        .fab-left .notification-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid var(--bg-secondary);
            animation: blink 1.5s ease-in-out infinite;
        }
        @keyframes float {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }
        @keyframes blink {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--accent-primary);
            color: var(--bg-secondary);
            font-weight: 800;
            font-size: 1.2rem;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .tip-card-icon {
            font-size: 2.5rem;
            color: var(--accent-primary);
            margin-bottom: 0.75rem;
            display: block;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255, 204, 0, 0.15);
            padding: 1.25rem 0;
            cursor: pointer;
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            color: var(--text-secondary);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 0.75rem;
        }
        @media (max-width: 1024px) {
            .container {
                padding: 0 1.25rem;
            }
            .nav-links {
                gap: 1.2rem;
            }
            .logo-text {
                font-size: 1.1rem;
                max-width: 250px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-actions .btn-outline,
            .nav-actions .btn-solid {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .mobile-menu-btn {
                display: block;
            }
            .mobile-nav {
                display: flex;
            }
            .logo-text {
                font-size: 1rem;
                max-width: 220px;
            }
            .page-hero {
                padding: 2.5rem 0 2rem;
            }
            section {
                padding: 2.5rem 0;
            }
            .fab-left {
                left: 1rem;
                bottom: 5rem;
                width: 48px;
                height: 48px;
            }
            .fab-left i {
                font-size: 1.5rem;
            }
        }