/* roulang page: index */
:root {
            --bg-primary: #121212;
            --bg-secondary: #1C1C1E;
            --bg-elevated: #242428;
            --bg-card: #1A1A1E;
            --accent-gold: #C5A059;
            --accent-amber: #FFBF00;
            --accent-bright-gold: #D4AC0D;
            --text-primary: #F5F5F7;
            --text-secondary: #C9C9CE;
            --text-muted: #8E8E93;
            --text-gold: #D4AC0D;
            --border-subtle: rgba(197, 160, 89, 0.22);
            --border-gold: rgba(197, 160, 89, 0.45);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 44px rgba(0, 0, 0, 0.6);
            --shadow-gold: 0 4px 24px rgba(197, 160, 89, 0.18);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --space-section: 88px;
            --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
            --font-body: 'Be Vietnam Pro', 'Segoe UI', Roboto, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-base: 0.32s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-slow: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--accent-amber);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 3px;
            border-radius: 4px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-display);
            color: var(--text-primary);
            line-height: 1.3;
            font-weight: 700;
            margin-top: 0;
        }

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

        .section {
            padding: var(--space-section) 0;
            position: relative;
        }

        .section-subtitle {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--accent-gold);
            font-weight: 600;
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 2.35rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            color: var(--text-primary);
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin-bottom: 36px;
            line-height: 1.7;
        }

        .text-gold {
            color: var(--accent-gold);
        }

        .text-amber {
            color: var(--accent-amber);
        }

        .text-muted {
            color: var(--text-muted) !important;
        }

        .badge-gold {
            background: rgba(197, 160, 89, 0.18);
            color: var(--accent-amber);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            display: inline-block;
        }

        /* ============ HEADER / NAVBAR ============ */
        .site-header {
            background: rgba(18, 18, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1040;
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(18, 18, 18, 0.98);
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.4);
        }

        .navbar-brand {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.01em;
        }

        .navbar-brand:hover {
            color: var(--accent-amber);
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-amber) 100%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #1A1A1E;
            flex-shrink: 0;
            box-shadow: 0 2px 12px rgba(197, 160, 89, 0.35);
        }

        .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 10px 16px !important;
            transition: color var(--transition-fast), background var(--transition-fast);
            border-radius: 6px;
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-primary);
            background: rgba(197, 160, 89, 0.08);
        }

        .navbar-nav .nav-link.active {
            color: var(--accent-amber);
            background: rgba(197, 160, 89, 0.12);
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--accent-amber);
            border-radius: 2px;
        }

        .btn-login {
            color: var(--text-secondary) !important;
            font-weight: 500;
            font-size: 0.9rem;
            padding: 8px 16px;
            border: none;
            background: transparent;
            transition: color var(--transition-fast);
        }

        .btn-login:hover {
            color: var(--text-primary) !important;
            background: transparent !important;
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-amber) 100%);
            color: #1A1A1E !important;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 22px;
            border-radius: 50px;
            border: none;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: 0 4px 16px rgba(197, 160, 89, 0.28);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(197, 160, 89, 0.4);
            color: #1A1A1E !important;
        }

        .navbar-toggler {
            border: 1px solid var(--border-gold);
            color: var(--text-primary);
            padding: 8px 10px;
            border-radius: 6px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(197, 160, 89, 0.25);
        }

        .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='%23C5A059' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .auth-buttons-desktop {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        @media (max-width: 991px) {
            .auth-buttons-desktop {
                display: none;
            }
            .navbar-collapse {
                background: var(--bg-secondary);
                border-radius: 12px;
                padding: 16px;
                margin-top: 12px;
                border: 1px solid var(--border-subtle);
            }
            .auth-buttons-mobile {
                display: flex !important;
                gap: 10px;
                padding-top: 12px;
                border-top: 1px solid var(--border-subtle);
                margin-top: 8px;
            }
        }

        @media (min-width: 992px) {
            .auth-buttons-mobile {
                display: none !important;
            }
        }

        /* ============ HERO ============ */
        .hero-section {
            position: relative;
            padding: 70px 0 88px;
            background-image: linear-gradient(rgba(18, 18, 18, 0.82), rgba(18, 18, 18, 0.94)), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: scroll;
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 70%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(197, 160, 89, 0.12) 0%, transparent 65%);
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            right: -10%;
            width: 55%;
            height: 120%;
            background: radial-gradient(ellipse, rgba(255, 191, 0, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(197, 160, 89, 0.16);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            padding: 8px 20px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-amber);
            letter-spacing: 0.04em;
            margin-bottom: 24px;
        }

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

        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -0.025em;
            color: var(--text-primary);
            margin-bottom: 22px;
            max-width: 740px;
        }

        .hero-title .highlight {
            color: var(--accent-amber);
            position: relative;
        }

        .hero-title .highlight::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-amber), transparent);
            border-radius: 3px;
        }

        .hero-desc {
            font-size: 1.12rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin-bottom: 32px;
            line-height: 1.75;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }

        .btn-primary-gold {
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-amber) 100%);
            color: #1A1A1E;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 50px;
            border: none;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: 0 6px 22px rgba(197, 160, 89, 0.3);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary-gold:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 34px rgba(197, 160, 89, 0.45);
            color: #1A1A1E;
        }

        .btn-outline-gold {
            background: transparent;
            color: var(--accent-gold);
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 28px;
            border-radius: 50px;
            border: 2px solid var(--border-gold);
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-outline-gold:hover {
            background: rgba(197, 160, 89, 0.1);
            border-color: var(--accent-amber);
            color: var(--accent-amber);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-value {
            font-size: 1.7rem;
            font-weight: 800;
            font-family: var(--font-display);
            color: var(--accent-amber);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            letter-spacing: 0.04em;
        }

        /* Flash sale bar */
        .flash-sale-bar {
            background: linear-gradient(90deg, rgba(197, 160, 89, 0.18) 0%, rgba(255, 191, 0, 0.12) 50%, rgba(197, 160, 89, 0.18) 100%);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-md);
            padding: 16px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }

        .flash-sale-label {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--accent-amber);
        }

        .flash-sale-label i {
            font-size: 1.3rem;
            animation: pulse-flame 1.6s infinite;
        }

        .flash-countdown {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-primary);
        }

        .countdown-box {
            background: rgba(0, 0, 0, 0.55);
            border: 1px solid var(--border-gold);
            border-radius: 8px;
            padding: 8px 14px;
            min-width: 52px;
            text-align: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--accent-amber);
            font-family: var(--font-display);
        }

        .countdown-sep {
            font-size: 1.2rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        .flash-price {
            font-size: 0.95rem;
            color: var(--text-secondary);
        }

        .flash-price strong {
            color: var(--accent-amber);
            font-size: 1.15rem;
        }

        .flash-old-price {
            text-decoration: line-through;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        @keyframes pulse-flame {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.1); }
        }

        /* ============ SECTION STYLES ============ */
        .bg-dark-section {
            background: var(--bg-primary);
        }

        .bg-elevated-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        /* Category entry cards */
        .category-card {
            position: relative;
            display: block;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-base);
            text-decoration: none;
            min-height: 280px;
            box-shadow: var(--shadow-card);
        }

        .category-card:hover {
            border-color: var(--border-gold);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .category-card:hover .category-card-title {
            color: var(--accent-amber);
        }

        .category-card-img {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .category-card:hover .category-card-img img {
            transform: scale(1.05);
        }

        .category-card-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60%;
            background: linear-gradient(transparent, rgba(18, 18, 18, 0.9));
        }

        .category-card-body {
            padding: 20px 24px 24px;
            position: relative;
            z-index: 2;
            margin-top: -40px;
        }

        .category-card-tag {
            display: inline-block;
            background: var(--accent-gold);
            color: #1A1A1E;
            font-weight: 700;
            font-size: 0.72rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            border-radius: 4px;
            padding: 4px 12px;
            margin-bottom: 10px;
        }

        .category-card-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

        .category-card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Resource / list section */
        .resource-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .resource-list-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }

        .resource-list-item:last-child {
            border-bottom: none;
        }

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

        .resource-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(197, 160, 89, 0.12);
            border: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--accent-gold);
            font-size: 1.1rem;
        }

        .resource-content {
            flex: 1;
        }

        .resource-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .resource-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* News / CMS list section */
        .news-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .news-list-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            transition: all var(--transition-fast);
            display: block;
            text-decoration: none;
        }

        .news-list-item:hover {
            border-color: var(--border-gold);
            background: var(--bg-elevated);
            transform: translateX(4px);
        }

        .news-list-item-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .news-list-item-title i {
            color: var(--accent-gold);
            font-size: 0.85rem;
        }

        .news-list-item-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .news-list-item-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* Side recommendation */
        .side-recommend {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
        }

        .side-recommend-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--accent-amber);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .side-recommend-item {
            display: block;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-subtle);
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .side-recommend-item:last-child {
            border-bottom: none;
        }

        .side-recommend-item:hover {
            padding-left: 6px;
        }

        .side-recommend-item .title {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 4px;
            transition: color var(--transition-fast);
        }

        .side-recommend-item:hover .title {
            color: var(--accent-amber);
        }

        .side-recommend-item .meta {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* FAQ */
        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
        }

        .accordion-button {
            background: var(--bg-card);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            padding: 18px 22px;
            border: none;
            box-shadow: none !important;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(197, 160, 89, 0.08);
            color: var(--accent-amber);
        }

        .accordion-button::after {
            filter: brightness(0) invert(0.8) sepia(0.5) saturate(3) hue-rotate(5deg);
        }

        .accordion-body {
            background: var(--bg-card);
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding: 0 22px 20px;
            line-height: 1.7;
        }

        /* Changelog */
        .changelog-item {
            padding: 18px 0;
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }

        .changelog-item:last-child {
            border-bottom: none;
        }

        .changelog-version {
            background: var(--accent-gold);
            color: #1A1A1E;
            font-weight: 700;
            font-size: 0.75rem;
            border-radius: 6px;
            padding: 4px 10px;
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.04em;
        }

        .changelog-content {
            flex: 1;
        }

        .changelog-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

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

        /* Topic tags cloud */
        .topic-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .topic-tag {
            display: inline-block;
            padding: 8px 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .topic-tag:hover {
            border-color: var(--accent-gold);
            color: var(--accent-amber);
            background: rgba(197, 160, 89, 0.08);
        }

        /* Steps */
        .step-item {
            text-align: left;
            padding: 28px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            height: 100%;
        }

        .step-item:hover {
            border-color: var(--border-gold);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .step-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: #1A1A1E;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 16px;
            font-family: var(--font-display);
        }

        .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .step-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* Bottom fixed CTA bar */
        .bottom-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(18, 18, 18, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border-gold);
            z-index: 1030;
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .bottom-cta-text {
            font-size: 0.95rem;
            color: var(--text-secondary);
        }

        .bottom-cta-text strong {
            color: var(--accent-amber);
        }

        .btn-cta-gold {
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-amber) 100%);
            color: #1A1A1E;
            font-weight: 700;
            padding: 10px 24px;
            border-radius: 50px;
            border: none;
            font-size: 0.9rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(197, 160, 89, 0.25);
        }

        .btn-cta-gold:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(197, 160, 89, 0.4);
            color: #1A1A1E;
        }

        /* ============ FAB ============ */
        .fab-button {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1050;
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-amber);
            font-size: 1.2rem;
            cursor: pointer;
            transition: all var(--transition-base);
            opacity: 0.6;
            text-decoration: none;
            position: relative;
            animation: fab-breathe 3s infinite;
        }

        .fab-button::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 18px;
            padding: 2px;
            background: linear-gradient(135deg, #C5A059, #00F0FF, #FFBF00);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }

        .fab-button:hover {
            opacity: 1;
            transform: scale(1.1);
            color: #fff;
        }

        .fab-button:active {
            transform: scale(0.95);
            border-color: #FF007F;
        }

        .fab-notification {
            position: absolute;
            top: -5px;
            right: -5px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #121212;
            animation: blink-notif 1.4s infinite;
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: 0.55; }
            50% { opacity: 0.85; }
        }

        @keyframes blink-notif {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.2; }
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #0D0D0F;
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 80px;
            position: relative;
        }

        .footer-brand {
            font-family: var(--font-display);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-heading {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .footer-copyright {
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            margin-top: 40px;
            text-align: left;
        }

        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 16px;
        }

        .footer-badge {
            font-size: 0.72rem;
            padding: 6px 14px;
            border-radius: 6px;
            background: rgba(197, 160, 89, 0.08);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-badge i {
            color: var(--accent-gold);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1200px) {
            .hero-title {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 991px) {
            :root {
                --space-section: 64px;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-section {
                padding: 50px 0 64px;
            }
            .section-title {
                font-size: 1.9rem;
            }
            .flash-sale-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 52px;
            }
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .hero-title {
                font-size: 1.95rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary-gold,
            .hero-actions .btn-outline-gold {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-value {
                font-size: 1.35rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .category-card {
                min-height: 240px;
            }
            .category-card-img {
                height: 180px;
            }
            .bottom-cta-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 18px;
            }
            .btn-cta-gold {
                width: 100%;
                justify-content: center;
            }
            .fab-button {
                width: 48px;
                height: 48px;
                left: 0.75rem;
                bottom: 6.5rem;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --space-section: 44px;
            }
            .hero-title {
                font-size: 1.65rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-badge {
                font-size: 0.72rem;
                padding: 6px 14px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .flash-sale-bar {
                font-size: 0.85rem;
                padding: 12px 16px;
            }
            .countdown-box {
                padding: 6px 10px;
                min-width: 42px;
                font-size: 1rem;
            }
            .news-list-item {
                padding: 14px 18px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-obsidian: #121212;
            --bg-charcoal: #1C1C1E;
            --bg-elevated: #242427;
            --bg-card: #1E1E21;
            --accent-bronze: #C5A059;
            --accent-amber: #FFBF00;
            --accent-muted-gold: #D4AC0D;
            --text-warm-white: #F5F5F7;
            --text-muted: #A6A6AC;
            --text-gold: #D4AC0D;
            --border-subtle: rgba(197, 160, 89, 0.18);
            --border-gold: rgba(197, 160, 89, 0.45);
            --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.3);
            --shadow-gold: 0 0 18px rgba(197, 160, 89, 0.25);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            background-color: var(--bg-obsidian);
            color: var(--text-warm-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a { text-decoration: none; transition: var(--transition); color: var(--accent-muted-gold); }
        a:hover { color: var(--accent-amber); }
        img { max-width: 100%; display: block; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        .container { max-width: var(--container-max); }
        /* ============ HEADER ============ */
        .site-header {
            background: rgba(18, 18, 18, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0;
        }
        .navbar { min-height: 70px; padding: 0; }
        .navbar-brand { display: flex; align-items: center; gap: 10px; color: var(--text-warm-white); font-weight: 700; font-size: 1.08rem; letter-spacing: 0.01em; }
        .navbar-brand:hover { color: var(--accent-amber); }
        .brand-icon {
            display: inline-flex; align-items: center; justify-content: center;
            width: 36px; height: 36px; border-radius: 50%;
            background: linear-gradient(145deg, rgba(197,160,89,0.18), rgba(255,191,0,0.08));
            border: 1px solid var(--border-gold);
            color: var(--accent-amber);
            font-size: 0.9rem;
        }
        .navbar-nav .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            padding: 10px 16px;
            border-radius: 50px;
            margin: 4px 4px;
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            color: var(--accent-amber);
            background: rgba(197,160,89,0.08);
        }
        .auth-buttons-desktop { display: flex; align-items: center; gap: 10px; margin-left: 16px; }
        .auth-buttons-mobile { display: none; gap: 10px; padding: 16px 16px 20px; }
        .btn-login {
            background: transparent;
            color: var(--text-warm-white);
            border: 1px solid var(--border-gold);
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover { border-color: var(--accent-amber); color: var(--accent-amber); background: rgba(255,191,0,0.06); }
        .btn-signup {
            background: linear-gradient(145deg, #D4AC0D, #FFBF00);
            color: #1C1C1E;
            border: none;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 12px rgba(255,191,0,0.25);
        }
        .btn-signup:hover { background: linear-gradient(145deg, #FFBF00, #FFD700); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(255,191,0,0.35); color: #121212; }
        .navbar-toggler { border: 1px solid var(--border-gold); border-radius: 8px; padding: 6px 10px; }
        .navbar-toggler-icon { background-image: none; position: relative; width: 22px; height: 18px; display: inline-block; }
        .navbar-toggler-icon::before, .navbar-toggler-icon::after, .navbar-toggler-icon span {
            content: ''; position: absolute; left: 0; width: 100%; height: 2px;
            background: var(--accent-amber); border-radius: 2px; transition: var(--transition);
        }
        .navbar-toggler-icon::before { top: 0; }
        .navbar-toggler-icon::after { bottom: 0; }
        .navbar-toggler-icon span { top: 8px; }
        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before { transform: rotate(45deg); top: 8px; }
        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after { transform: rotate(-45deg); bottom: 8px; }
        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span { opacity: 0; }
        /* ============ HERO ============ */
        .hero-section {
            background: var(--bg-charcoal);
            border-bottom: 1px solid var(--border-subtle);
            padding: 70px 0 90px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: ''; position: absolute; top: -30%; right: -10%;
            width: 500px; height: 500px; border-radius: 50%;
            background: radial-gradient(circle, rgba(197,160,89,0.12) 0%, rgba(197,160,89,0) 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: ''; position: absolute; bottom: -20%; left: -5%;
            width: 350px; height: 350px; border-radius: 50%;
            background: radial-gradient(circle, rgba(255,191,0,0.08) 0%, rgba(255,191,0,0) 70%);
            pointer-events: none;
        }
        .hero-section .container { position: relative; z-index: 2; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(197,160,89,0.1); border: 1px solid var(--border-gold);
            color: var(--accent-amber); padding: 6px 16px; border-radius: 50px;
            font-size: 0.85rem; font-weight: 600; letter-spacing: 0.02em;
            text-transform: uppercase;
            margin-bottom: 22px;
        }
        .hero-title {
            font-size: 2.9rem; font-weight: 800; line-height: 1.2;
            color: var(--text-warm-white); letter-spacing: -0.02em; margin-bottom: 20px;
        }
        .hero-title .highlight { color: var(--accent-amber); }
        .hero-subtitle { font-size: 1.15rem; color: var(--text-muted); max-width: 640px; line-height: 1.7; margin-bottom: 28px; }
        .hero-image-wrap { position: relative; }
        .hero-image-card {
            background: var(--bg-elevated);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            position: relative;
        }
        .hero-image-card img { width: 100%; height: 320px; object-fit: cover; }
        .hero-image-card .overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(18,18,18,0) 30%, rgba(18,18,18,0.8) 100%); }
        .hero-float-card {
            position: absolute; right: 18px; bottom: 18px; left: 18px;
            background: rgba(28,28,30,0.92); backdrop-filter: blur(10px);
            border: 1px solid var(--border-subtle); border-radius: var(--radius-md);
            padding: 18px 22px; display: flex; gap: 14px; align-items: center;
            box-shadow: var(--shadow-card);
            z-index: 3;
        }
        .hero-float-icon {
            width: 46px; height: 46px; border-radius: 12px;
            background: rgba(197,160,89,0.12); display: flex; align-items: center; justify-content: center;
            color: var(--accent-amber); font-size: 1.5rem; flex-shrink: 0;
        }
        .hero-float-text { font-size: 0.9rem; color: var(--text-warm-white); font-weight: 600; line-height: 1.4; }
        .hero-float-text small { display: block; font-size: 0.82rem; color: var(--text-muted); font-weight: 400; }
        .benefit-list { display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 30px; }
        .benefit-item { display: flex; align-items: center; gap: 8px; font-size: 0.97rem; color: var(--text-warm-white); font-weight: 500; }
        .benefit-item i { color: var(--accent-amber); }
        .btn-primary-gold {
            display: inline-flex; align-items: center; gap: 10px;
            background: linear-gradient(145deg, #C5A059, #FFBF00);
            color: #121212; font-weight: 700; padding: 14px 30px;
            border-radius: 50px; border: none; transition: var(--transition);
            box-shadow: 0 8px 22px rgba(255,191,0,0.3);
            font-size: 1rem;
        }
        .btn-primary-gold:hover { background: linear-gradient(145deg, #D4AC0D, #FFD700); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(255,191,0,0.4); color: #121212; }
        .btn-outline-gold {
            display: inline-flex; align-items: center; gap: 10px;
            background: transparent; color: var(--accent-amber);
            border: 1px solid var(--border-gold); padding: 14px 28px;
            border-radius: 50px; font-weight: 600; transition: var(--transition);
            font-size: 0.95rem;
        }
        .btn-outline-gold:hover { background: rgba(197,160,89,0.1); color: var(--accent-amber); border-color: var(--accent-amber); }
        .hero-stats {
            display: flex; flex-wrap: wrap; gap: 16px 36px; margin-top: 40px;
            padding-top: 20px; border-top: 1px solid var(--border-subtle);
        }
        .hero-stat { display: flex; flex-direction: column; }
        .hero-stat .value { font-size: 1.6rem; font-weight: 700; color: var(--accent-amber); letter-spacing: -0.01em; }
        .hero-stat .label { font-size: 0.88rem; color: var(--text-muted); }
        /* ============ SECTION GENERIC ============ */
        .section-block { padding: 80px 0; }
        .section-block.alt { background: var(--bg-charcoal); }
        .section-title { font-size: 2.2rem; font-weight: 700; color: var(--text-warm-white); letter-spacing: -0.02em; margin-bottom: 16px; }
        .section-desc { font-size: 1.05rem; color: var(--text-muted); line-height: 1.7; max-width: 760px; margin-bottom: 48px; }
        .label-tag {
            display: inline-flex; align-items: center; gap: 6px;
            color: var(--accent-amber); font-size: 0.85rem; font-weight: 600;
            text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 12px;
        }
        .gold-line { width: 48px; height: 2px; background: var(--accent-amber); border-radius: 2px; }
        /* ============ PAIN POINTS ============ */
        .pain-panel {
            background: var(--bg-elevated);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            height: 100%;
            box-shadow: var(--shadow-card);
        }
        .pain-panel h3 { font-size: 1.4rem; font-weight: 700; color: var(--accent-amber); margin-bottom: 20px; }
        .pain-list { display: flex; flex-direction: column; gap: 16px; }
        .pain-item { display: flex; gap: 14px; align-items: flex-start; font-size: 0.98rem; color: var(--text-muted); }
        .pain-item i { color: #D32F2F; font-size: 1.1rem; margin-top: 3px; flex-shrink: 0; }
        /* ============ STRATEGY CARDS ============ */
        .strategy-card {
            background: var(--bg-elevated);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 30px 26px;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .strategy-card::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
            background: linear-gradient(90deg, rgba(197,160,89,0.6), rgba(255,191,0,0.2));
            opacity: 0; transition: var(--transition);
        }
        .strategy-card:hover { border-color: var(--border-gold); transform: translateY(-4px); }
        .strategy-card:hover::before { opacity: 1; }
        .strategy-icon {
            width: 54px; height: 54px; border-radius: 14px;
            background: rgba(197,160,89,0.12); display: flex; align-items: center; justify-content: center;
            color: var(--accent-amber); font-size: 1.5rem; margin-bottom: 18px;
        }
        .strategy-card h3 { font-size: 1.25rem; font-weight: 700; color: var(--text-warm-white); margin-bottom: 10px; }
        .strategy-card p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 0; }
        .strategy-card .tag {
            display: inline-block; font-size: 0.78rem; font-weight: 700; color: var(--accent-amber);
            background: rgba(197,160,89,0.1); padding: 4px 12px; border-radius: 50px;
            margin-bottom: 14px; letter-spacing: 0.04em; text-transform: uppercase;
        }
        /* ============ SCENARIOS ============ */
        .scenario-list { position: relative; }
        .scenario-item {
            display: flex; gap: 18px; margin-bottom: 28px; padding-left: 12px;
        }
        .scenario-marker {
            display: flex; flex-direction: column; align-items: center; flex-shrink: 0;
        }
        .scenario-dot {
            width: 16px; height: 16px; border-radius: 50%; background: var(--accent-amber);
            border: 3px solid rgba(197,160,89,0.25); box-shadow: 0 0 8px rgba(197,160,89,0.35);
            z-index: 2;
        }
        .scenario-line { width: 2px; flex: 1; background: var(--border-subtle); margin-top: 4px; }
        .scenario-item:last-child .scenario-line { display: none; }
        .scenario-content { background: var(--bg-elevated); border-radius: var(--radius-md); padding: 22px 26px; flex: 1; border: 1px solid var(--border-subtle); transition: var(--transition); }
        .scenario-content:hover { border-color: var(--border-gold); }
        .scenario-content h4 { font-size: 1.08rem; font-weight: 700; color: var(--text-warm-white); margin-bottom: 8px; }
        .scenario-content p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 0; line-height: 1.7; }
        .scenario-content .mini-tag {
            display: inline-block; font-size: 0.75rem; font-weight: 600; color: var(--accent-amber);
            background: rgba(197,160,89,0.08); padding: 3px 10px; border-radius: 20px;
            margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.04em;
        }
        /* ============ OUTCOME ============ */
        .outcome-image-wrap {
            background: var(--bg-elevated);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            position: relative;
        }
        .outcome-image-wrap img { width: 100%; height: 420px; object-fit: cover; }
        .outcome-feature { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 24px; }
        .outcome-feature .icon {
            width: 40px; height: 40px; border-radius: 10px; background: rgba(197,160,89,0.1);
            display: flex; align-items: center; justify-content: center; color: var(--accent-amber);
            font-size: 1rem; flex-shrink: 0; border: 1px solid var(--border-subtle);
        }
        .outcome-feature h4 { font-size: 1.02rem; font-weight: 700; color: var(--text-warm-white); margin-bottom: 4px; }
        .outcome-feature p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; line-height: 1.6; }
        .progress-bar-wrap { margin-top: 24px; }
        .progress-label { display: flex; justify-content: space-between; font-size: 0.88rem; color: var(--text-muted); margin-bottom: 6px; }
        .progress-label span:last-child { color: var(--accent-amber); font-weight: 600; }
        .progress { height: 8px; border-radius: 50px; background: rgba(197,160,89,0.08); overflow: hidden; }
        .progress-bar { background: linear-gradient(90deg, #C5A059, #FFBF00); border-radius: 50px; }
        /* ============ TESTIMONIALS ============ */
        .testimonial-card {
            background: var(--bg-elevated);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            height: 100%;
            box-shadow: var(--shadow-card);
        }
        .testimonial-stars { color: var(--accent-amber); font-size: 0.9rem; margin-bottom: 14px; }
        .testimonial-text { font-size: 1rem; color: var(--text-warm-white); line-height: 1.7; font-style: italic; margin-bottom: 18px; }
        .testimonial-author { display: flex; align-items: center; gap: 12px; }
        .testimonial-author .avatar {
            width: 46px; height: 46px; border-radius: 50%; background: rgba(197,160,89,0.12);
            display: flex; align-items: center; justify-content: center; color: var(--accent-amber);
            font-size: 1.2rem; font-weight: 700; flex-shrink: 0;
        }
        .testimonial-author .name { font-weight: 700; color: var(--text-warm-white); font-size: 0.95rem; }
        .testimonial-author .role { font-size: 0.82rem; color: var(--text-muted); }
        /* ============ FAQ ============ */
        .faq-item {
            background: var(--bg-elevated);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-gold); }
        .faq-item .accordion-header button {
            background: transparent; border: none; color: var(--text-warm-white);
            font-weight: 600; font-size: 1.02rem; padding: 20px 22px; width: 100%;
            text-align: left; display: flex; justify-content: space-between; align-items: center;
            cursor: pointer;
        }
        .faq-item .accordion-button:not(.collapsed) { color: var(--accent-amber); background: transparent; box-shadow: none; }
        .faq-item .accordion-button::after { display: none; }
        .faq-chevron { transition: var(--transition); color: var(--accent-amber); }
        .accordion-button:not(.collapsed) .faq-chevron { transform: rotate(180deg); }
        .faq-item .accordion-body { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; padding: 0 22px 20px; }
        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(145deg, #1C1C1E, #121212);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 60px 48px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            margin-bottom: 60px;
        }
        .cta-section::before {
            content: ''; position: absolute; top: -50%; right: -20%;
            width: 400px; height: 400px; border-radius: 50%;
            background: radial-gradient(circle, rgba(197,160,89,0.15) 0%, rgba(197,160,89,0) 70%);
            pointer-events: none;
        }
        .cta-section h2 { font-size: 2.2rem; font-weight: 700; color: var(--text-warm-white); margin-bottom: 16px; }
        .cta-section p { color: var(--text-muted); font-size: 1.05rem; line-height: 1.7; margin-bottom: 30px; }
        /* ============ FAB ============ */
        .fab-support {
            position: fixed; left: 16px; bottom: 80px; z-index: 1200;
            width: 56px; height: 56px; border-radius: 50%;
            background: rgba(28,28,30,0.9); backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(28,28,30,0.9), rgba(28,28,30,0.9)), linear-gradient(135deg, #C5A059, #FFBF00);
            background-origin: border-box; background-clip: padding-box, border-box;
            display: flex; align-items: center; justify-content: center;
            color: var(--accent-amber); font-size: 1.3rem;
            box-shadow: 0 0 18px rgba(197,160,89,0.3), 0 8px 24px rgba(0,0,0,0.4);
            transition: var(--transition);
            opacity: 0.75;
            cursor: pointer;
            animation: fab-breathe 3.5s ease-in-out infinite;
        }
        .fab-support:hover { opacity: 1; transform: scale(1.08); box-shadow: 0 0 28px rgba(197,160,89,0.5); animation-play-state: paused; }
        .fab-support:active { transform: scale(0.94); }
        .fab-notification {
            position: absolute; top: 6px; right: 6px; width: 12px; height: 12px;
            border-radius: 50%; background: #D32F2F; border: 2px solid #1C1C1E;
            box-shadow: 0 0 6px rgba(211,47,47,0.7);
            animation: blink-red 2s ease-in-out infinite;
        }
        @keyframes fab-breathe {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 0.9; }
        }
        @keyframes blink-red {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.35; }
        }
        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-charcoal);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 0;
            margin-top: 0;
        }
        .footer-brand { display: flex; align-items: center; gap: 10px; color: var(--text-warm-white); font-weight: 700; font-size: 1.15rem; margin-bottom: 16px; }
        .footer-desc { color: var(--text-muted); font-size: 0.92rem; line-height: 1.7; margin-bottom: 18px; max-width: 380px; }
        .footer-badges { display: flex; flex-wrap: wrap; gap: 10px; }
        .footer-badge {
            display: inline-flex; align-items: center; gap: 6px; font-size: 0.82rem;
            color: var(--text-muted); background: rgba(197,160,89,0.06);
            border: 1px solid var(--border-subtle); border-radius: 50px;
            padding: 5px 14px;
        }
        .footer-badge i { color: var(--accent-amber); font-size: 0.8rem; }
        .footer-heading { font-size: 1rem; font-weight: 700; color: var(--text-warm-white); margin-bottom: 16px; letter-spacing: 0.02em; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { color: var(--text-muted); font-size: 0.9rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
        .footer-links a:hover { color: var(--accent-amber); padding-left: 4px; }
        .footer-copyright {
            border-top: 1px solid var(--border-subtle); margin-top: 40px; padding: 18px 0;
            color: var(--text-muted); font-size: 0.85rem; text-align: center; line-height: 1.6;
        }
        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.3rem; }
            .section-title { font-size: 1.85rem; }
            .cta-section h2 { font-size: 1.85rem; }
            .hero-image-card img { height: 280px; }
            .outcome-image-wrap img { height: 360px; }
        }
        @media (max-width: 768px) {
            .navbar-brand { font-size: 0.95rem; }
            .navbar { min-height: 60px; }
            .auth-buttons-desktop { display: none; }
            .auth-buttons-mobile { display: flex; }
            .hero-section { padding: 48px 0 64px; }
            .hero-title { font-size: 1.75rem; }
            .hero-subtitle { font-size: 1rem; }
            .hero-image-card img { height: 240px; }
            .benefit-list { gap: 10px 16px; }
            .benefit-item { font-size: 0.88rem; }
            .hero-stats { gap: 12px 20px; }
            .hero-stat .value { font-size: 1.3rem; }
            .section-block { padding: 60px 0; }
            .section-title { font-size: 1.6rem; }
            .section-desc { font-size: 0.95rem; margin-bottom: 36px; }
            .cta-section { padding: 44px 28px; border-radius: var(--radius-lg); }
            .outcome-image-wrap img { height: 300px; }
            .pain-panel { padding: 28px 22px; }
            .fab-support { left: 12px; bottom: 72px; width: 52px; height: 52px; font-size: 1.15rem; }
        }
        @media (max-width: 520px) {
            .hero-title { font-size: 1.5rem; }
            .hero-section { padding: 36px 0 48px; }
            .hero-image-card img { height: 200px; }
            .hero-badge { font-size: 0.75rem; padding: 5px 12px; }
            .btn-primary-gold, .btn-outline-gold { padding: 12px 22px; font-size: 0.9rem; }
            .btn-primary-gold { width: 100%; justify-content: center; }
            .btn-outline-gold { width: 100%; justify-content: center; margin-top: 10px; }
            .section-title { font-size: 1.4rem; }
            .strategy-card { padding: 22px 18px; }
            .scenario-content { padding: 18px 18px; }
            .cta-section { padding: 36px 20px; }
            .site-footer { padding-top: 40px; }
            .footer-heading { font-size: 0.92rem; }
            .footer-desc { font-size: 0.88rem; }
        }

/* roulang page: article */
:root {
            --primary-deep: #0A2E1C;
            --primary-forest: #123E25;
            --primary-mid: #1B5132;
            --accent-gold: #FFD700;
            --accent-gold-soft: #E6BE4A;
            --accent-red: #D32F2F;
            --accent-red-soft: #E5533D;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-mint-muted: #A8CFC2;
            --bg-section: #0B2417;
            --bg-card: #143825;
            --bg-card-hover: #1A4530;
            --border-gold: rgba(255, 215, 0, 0.35);
            --border-subtle: rgba(209, 242, 235, 0.14);
            --border-gold-strong: rgba(255, 215, 0, 0.6);
            --shadow-card: 0 10px 32px rgba(0, 0, 0, 0.32);
            --shadow-gold: 0 6px 24px rgba(255, 215, 0, 0.16);
            --shadow-gold-lg: 0 14px 48px rgba(255, 215, 0, 0.22);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-pill: 50px;
            --container-max: 1200px;
            --font-primary: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition-fast: 180ms ease;
            --transition-base: 280ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-slow: 420ms cubic-bezier(0.22, 1, 0.36, 1);
        }

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

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

        body {
            font-family: var(--font-primary);
            background-color: var(--primary-deep);
            color: var(--text-mint);
            line-height: 1.65;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

        a:hover {
            color: var(--accent-gold-soft);
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            font-family: var(--font-primary);
        }

        .container {
            max-width: var(--container-max);
            --bs-gutter-x: 1.5rem;
        }

        /* ========== SITE HEADER / NAV ========== */
        .site-header {
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.4);
            background: rgba(10, 46, 28, 0.97);
        }

        .navbar {
            padding: 0;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-white);
            letter-spacing: -0.01em;
            transition: color var(--transition-fast);
        }

        .navbar-brand:hover {
            color: var(--accent-gold);
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #B8860B 100%);
            color: var(--primary-deep);
            font-size: 1.05rem;
            box-shadow: var(--shadow-gold);
            flex-shrink: 0;
        }

        .navbar-nav {
            gap: 4px;
        }

        .navbar-nav .nav-link {
            color: var(--text-mint-muted);
            font-weight: 600;
            font-size: 0.92rem;
            padding: 10px 16px !important;
            border-radius: var(--radius-pill);
            transition: color var(--transition-fast), background var(--transition-fast);
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }

        .navbar-nav .nav-link.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .navbar-toggler {
            border: 1px solid var(--border-subtle);
            padding: 6px 10px;
            border-radius: 8px;
        }

        .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(209, 242, 235, 0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .auth-buttons-desktop {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: 16px;
        }

        .btn-login,
        .btn-signup {
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 20px;
            font-weight: 700;
            font-size: 0.85rem;
            cursor: pointer;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .btn-login {
            background: transparent;
            color: var(--text-mint);
            border: 1px solid var(--border-subtle);
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.07);
            color: var(--text-white);
            transform: translateY(-1px);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold) 0%, #D4A017 100%);
            color: var(--primary-deep);
            box-shadow: var(--shadow-gold);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold-lg);
            color: var(--primary-deep);
        }

        .auth-buttons-mobile {
            display: none;
            gap: 10px;
            padding: 16px 0 8px;
            border-top: 1px solid var(--border-subtle);
            margin-top: 12px;
        }

        @media (max-width: 991.98px) {
            .auth-buttons-desktop {
                display: none;
            }

            .auth-buttons-mobile {
                display: flex;
            }

            .navbar-collapse {
                background: rgba(10, 46, 28, 0.98);
                border-radius: var(--radius-md);
                padding: 12px 16px;
                margin-top: 10px;
                border: 1px solid var(--border-subtle);
            }
        }

        /* ========== ARTICLE HERO ========== */
        .article-hero {
            background: radial-gradient(ellipse at top right, rgba(255, 215, 0, 0.08) 0%, rgba(10, 46, 28, 0) 55%),
                        radial-gradient(ellipse at bottom left, rgba(211, 47, 47, 0.12) 0%, rgba(10, 46, 28, 0) 50%),
                        linear-gradient(165deg, var(--primary-forest) 0%, var(--primary-deep) 60%, #072016 100%);
            padding: 64px 0 48px;
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23FFD700' fill-opacity='0.04'%3E%3Cpath d='M36 34l2-4-2-4 4 2 4-2-2 4 2 4-4-2-4 2zm-20 0l2-4-2-4 4 2 4-2-2 4 2 4-4-2-4 2z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
        }

        .article-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-article {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-mint-muted);
            margin-bottom: 20px;
        }

        .breadcrumb-article a {
            color: var(--accent-gold-soft);
            transition: color var(--transition-fast);
        }

        .breadcrumb-article a:hover {
            color: var(--accent-gold);
        }

        .breadcrumb-separator {
            color: var(--text-mint-muted);
            opacity: 0.6;
            font-size: 0.7rem;
        }

        .breadcrumb-current {
            color: var(--text-mint);
            opacity: 0.85;
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(211, 47, 47, 0.18);
            color: #FF8A7A;
            border: 1px solid rgba(211, 47, 47, 0.4);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }

        .article-hero h1 {
            font-size: clamp(1.7rem, 4vw, 2.6rem);
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.25;
            letter-spacing: -0.015em;
            margin-bottom: 18px;
            max-width: 780px;
        }

        .article-hero-excerpt {
            font-size: 1.05rem;
            color: var(--text-mint-muted);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            font-size: 0.85rem;
            color: var(--text-mint-muted);
        }

        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .article-meta-item i {
            color: var(--accent-gold);
            font-size: 0.8rem;
        }

        .article-meta-item strong {
            color: var(--text-mint);
            font-weight: 700;
        }

        .article-hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            background: rgba(10, 46, 28, 0.7);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .hero-stat {
            flex: 1;
            min-width: 110px;
            text-align: center;
        }

        .hero-stat-number {
            display: block;
            font-size: 1.55rem;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .hero-stat-label {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-mint-muted);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-top: 4px;
        }

        /* ========== ARTICLE BODY ========== */
        .article-main-section {
            padding: 48px 0 64px;
            background: linear-gradient(180deg, var(--primary-deep) 0%, #0B2417 100%);
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 40px;
            align-items: start;
        }

        .article-content-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            padding: 36px 40px;
            box-shadow: var(--shadow-card);
            min-width: 0;
        }

        .article-cover {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 28px;
            border: 1px solid var(--border-subtle);
            aspect-ratio: 16 / 8;
            object-fit: cover;
            width: 100%;
            background: var(--primary-forest);
        }

        .article-body {
            font-size: 1rem;
            color: var(--text-mint);
            line-height: 1.75;
            letter-spacing: 0.005em;
        }

        .article-body h2 {
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--text-white);
            margin: 32px 0 14px;
            letter-spacing: -0.01em;
            line-height: 1.35;
        }

        .article-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--accent-gold-soft);
            margin: 26px 0 10px;
            line-height: 1.4;
        }

        .article-body p {
            margin-bottom: 16px;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 18px;
        }

        .article-body li {
            margin-bottom: 8px;
            color: var(--text-mint);
        }

        .article-body li::marker {
            color: var(--accent-gold);
        }

        .article-body blockquote {
            background: rgba(255, 215, 0, 0.06);
            border-left: 4px solid var(--accent-gold);
            padding: 18px 22px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-mint);
        }

        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            border: 1px solid var(--border-subtle);
        }

        .article-body strong {
            color: var(--text-white);
            font-weight: 700;
        }

        .article-body a {
            color: var(--accent-gold);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--accent-gold-soft);
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }

        .article-body th {
            background: var(--primary-mid);
            color: var(--text-white);
            font-weight: 700;
            text-align: left;
            padding: 12px 16px;
            border-bottom: 2px solid var(--border-gold);
        }

        .article-body td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-mint);
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .sidebar-card-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .sidebar-card-header i {
            color: var(--accent-gold);
            font-size: 1rem;
        }

        .sidebar-card-header h3 {
            font-size: 0.95rem;
            font-weight: 800;
            color: var(--text-white);
            margin: 0;
            letter-spacing: 0.01em;
        }

        .sidebar-key-points {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sidebar-key-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 0.88rem;
            color: var(--text-mint);
            line-height: 1.55;
        }

        .sidebar-key-points li:last-child {
            border-bottom: none;
        }

        .sidebar-key-points .point-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.12);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.7rem;
            color: var(--accent-gold);
            margin-top: 2px;
        }

        .sidebar-cta-btn {
            display: block;
            width: 100%;
            text-align: center;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #D4A017 100%);
            color: var(--primary-deep);
            border: none;
            border-radius: var(--radius-pill);
            padding: 13px 20px;
            font-weight: 800;
            font-size: 0.9rem;
            cursor: pointer;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: var(--shadow-gold);
        }

        .sidebar-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold-lg);
            color: var(--primary-deep);
        }

        /* ========== KEY TIPS SECTION ========== */
        .key-tips-section {
            padding: 56px 0 64px;
            background: var(--bg-section);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.75rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }

        .section-label .label-dash {
            display: inline-block;
            width: 28px;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }

        .section-title {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: -0.015em;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-mint-muted);
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .tip-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .tip-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), transparent);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .tip-card:hover {
            border-color: var(--border-gold);
            transform: translateY(-4px);
            box-shadow: var(--shadow-gold);
        }

        .tip-card:hover::after {
            opacity: 1;
        }

        .tip-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.12);
            color: var(--accent-gold);
            font-weight: 900;
            font-size: 0.95rem;
            margin-bottom: 14px;
        }

        .tip-card h3 {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .tip-card p {
            font-size: 0.9rem;
            color: var(--text-mint-muted);
            line-height: 1.65;
            margin: 0;
        }

        /* ========== RELATED STRATEGIES ========== */
        .related-section {
            padding: 56px 0 64px;
            background: var(--primary-deep);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .related-card {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            min-width: 0;
            text-decoration: none;
            color: var(--text-mint);
        }

        .related-card:hover {
            border-color: var(--border-gold);
            transform: translateY(-3px);
            box-shadow: var(--shadow-gold);
            color: var(--text-mint);
        }

        .related-card-img {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            border: 1px solid var(--border-subtle);
        }

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

        .related-card-content h3 {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }

        .related-card-content p {
            font-size: 0.87rem;
            color: var(--text-mint-muted);
            margin: 0;
            line-height: 1.55;
        }

        .related-card-arrow {
            margin-left: auto;
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 0.8rem;
            transition: background var(--transition-fast), transform var(--transition-fast);
        }

        .related-card:hover .related-card-arrow {
            background: rgba(255, 215, 0, 0.18);
            transform: translateX(3px);
        }

        /* ========== FAQ ========== */
        .article-faq-section {
            padding: 56px 0 64px;
            background: var(--bg-section);
            border-top: 1px solid var(--border-subtle);
        }

        .faq-list {
            max-width: 780px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--border-gold);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-white);
            transition: color var(--transition-fast);
            user-select: none;
            list-style: none;
        }

        .faq-question::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--accent-gold);
            margin-left: auto;
            flex-shrink: 0;
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-question::after {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 22px;
            font-size: 0.9rem;
            color: var(--text-mint-muted);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* ========== BOTTOM CTA ========== */
        .article-bottom-cta {
            padding: 64px 0 72px;
            background: radial-gradient(ellipse at center, rgba(255, 215, 0, 0.07) 0%, rgba(10, 46, 28, 0) 60%),
                        linear-gradient(180deg, var(--primary-deep) 0%, var(--bg-section) 100%);
            text-align: center;
        }

        .cta-inner {
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #B8860B 100%);
            color: var(--primary-deep);
            font-size: 1.5rem;
            margin-bottom: 20px;
            box-shadow: var(--shadow-gold-lg);
        }

        .cta-title {
            font-size: clamp(1.5rem, 3.5vw, 2.1rem);
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 14px;
            letter-spacing: -0.015em;
            line-height: 1.3;
        }

        .cta-desc {
            font-size: 1rem;
            color: var(--text-mint-muted);
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #D4A017 100%);
            color: var(--primary-deep);
            border: none;
            border-radius: var(--radius-pill);
            padding: 14px 28px;
            font-weight: 800;
            font-size: 0.92rem;
            cursor: pointer;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: var(--shadow-gold);
            text-decoration: none;
        }

        .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold-lg);
            color: var(--primary-deep);
        }

        .btn-cta-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text-mint);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-pill);
            padding: 14px 28px;
            font-weight: 700;
            font-size: 0.92rem;
            cursor: pointer;
            transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
            text-decoration: none;
        }

        .btn-cta-secondary:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: var(--border-gold);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #061A10;
            padding: 56px 0 28px;
            border-top: 1px solid var(--border-subtle);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            font-size: 0.9rem;
        }

        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-mint-muted);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-mint);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-pill);
            padding: 6px 12px;
        }

        .footer-badge i {
            color: var(--accent-gold);
            font-size: 0.7rem;
        }

        .footer-heading {
            font-size: 0.9rem;
            font-weight: 800;
            color: var(--text-white);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            font-size: 0.88rem;
            color: var(--text-mint-muted);
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }

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

        .footer-copyright {
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-mint-muted);
            border-top: 1px solid var(--border-subtle);
            padding-top: 22px;
            margin-top: 36px;
            line-height: 1.6;
        }

        /* ========== FAB ========== */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(145deg, #1A1A1A 0%, #3D2B1F 50%, #1A1A1A 100%);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.25rem;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3), inset 0 1px 2px rgba(255, 255, 255, 0.15);
            opacity: 0.7;
            animation: fab-breathe 3s ease-in-out infinite;
            transition: opacity var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            -webkit-tap-highlight-color: transparent;
            touch-action: manipulation;
            user-select: none;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.45), inset 0 1px 2px rgba(255, 255, 255, 0.15);
        }

        .fab-left:active {
            transform: scale(0.95) translateY(2px);
            box-shadow: 0 2px 10px rgba(255, 215, 0, 0.3);
        }

        .fab-left::after {
            content: '';
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent-red);
            border: 2px solid var(--primary-deep);
            animation: fab-dot-blink 2s ease-in-out infinite;
        }

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

        @keyframes fab-dot-blink {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.8); }
        }

        .fab-left:hover {
            animation-play-state: paused;
        }

        /* ========== NO ARTICLE ========== */
        .no-article {
            text-align: center;
            padding: 60px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
        }

        .no-article i {
            font-size: 2.5rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
            opacity: 0.6;
        }

        .no-article p {
            font-size: 1.05rem;
            color: var(--text-mint);
            margin-bottom: 20px;
        }

        .no-article a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #D4A017 100%);
            color: var(--primary-deep);
            border: none;
            border-radius: var(--radius-pill);
            padding: 12px 24px;
            font-weight: 700;
            font-size: 0.9rem;
            text-decoration: none;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: var(--shadow-gold);
        }

        .no-article a:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold-lg);
            color: var(--primary-deep);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .article-sidebar {
                position: static;
            }

            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 40px 0 32px;
            }

            .article-hero-stats {
                padding: 16px;
                gap: 10px;
            }

            .hero-stat-number {
                font-size: 1.25rem;
            }

            .article-content-card {
                padding: 24px 20px;
                border-radius: var(--radius-md);
            }

            .article-body h2 {
                font-size: 1.25rem;
            }

            .article-body h3 {
                font-size: 1.05rem;
            }

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

            .tips-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .related-card {
                padding: 18px;
            }

            .related-card-img {
                width: 64px;
                height: 64px;
            }

            .related-card-content h3 {
                font-size: 0.95rem;
            }

            .related-card-content p {
                font-size: 0.8rem;
            }

            .section-title {
                font-size: 1.35rem;
            }

            .cta-title {
                font-size: 1.35rem;
            }

            .btn-cta-primary,
            .btn-cta-secondary {
                padding: 12px 20px;
                font-size: 0.85rem;
            }

            .fab-left {
                width: 48px;
                height: 48px;
                font-size: 1rem;
                left: 12px;
                bottom: 80px;
            }
        }

        @media (max-width: 520px) {
            .article-meta-row {
                gap: 12px;
                font-size: 0.78rem;
                flex-direction: column;
                align-items: flex-start;
            }

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

            .article-hero-excerpt {
                font-size: 0.92rem;
            }

            .article-content-card {
                padding: 20px 16px;
                border-radius: var(--radius-sm);
            }

            .article-cover {
                aspect-ratio: 16 / 10;
                margin-bottom: 20px;
            }

            .hero-stat-number {
                font-size: 1.1rem;
            }

            .hero-stat-label {
                font-size: 0.65rem;
            }

            .faq-question {
                font-size: 0.85rem;
                padding: 14px 16px;
            }

            .faq-answer {
                font-size: 0.82rem;
                padding: 0 16px;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }

            .tip-card {
                padding: 20px 18px;
            }

            .tip-card h3 {
                font-size: 0.95rem;
            }

            .tip-card p {
                font-size: 0.82rem;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #121212;
            --bg-secondary: #1C1C1E;
            --bg-tertiary: #252528;
            --accent-gold: #C5A059;
            --accent-amber: #FFBF00;
            --text-white: #F5F5F7;
            --text-muted: #D4AC0D;
            --text-gray: #A6ACAF;
            --border-subtle: rgba(197, 160, 89, 0.25);
            --border-gold: rgba(197, 160, 89, 0.55);
            --shadow-soft: 0 8px 28px rgba(0,0,0,0.35);
            --shadow-gold: 0 4px 20px rgba(197,160,89,0.2);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --font-body: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            --font-display: 'Georgia', 'Times New Roman', serif;
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --transition-fast: 0.18s ease;
            --container-max: 1200px;
            --section-gap: 80px;
            --card-gap: 20px;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: var(--font-body);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: var(--transition-fast);
        }
        
        a:hover {
            color: var(--accent-amber);
        }
        
        button {
            cursor: pointer;
            font-family: var(--font-body);
        }
        
        .container {
            max-width: var(--container-max);
            padding-left: 20px;
            padding-right: 20px;
        }
        
        /* ===== HEADER / NAVBAR ===== */
        .site-header {
            background: rgba(18,18,18,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }
        
        .site-header.scrolled {
            box-shadow: 0 6px 30px rgba(0,0,0,0.6);
            background: rgba(18,18,18,0.98);
        }
        
        .navbar {
            padding: 16px 0;
            flex-wrap: wrap;
        }
        
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-display);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.3px;
            transition: var(--transition-fast);
        }
        
        .navbar-brand:hover {
            color: var(--accent-gold);
        }
        
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            border-radius: 50%;
            color: #121212;
            font-size: 1rem;
            flex-shrink: 0;
        }
        
        .navbar-nav {
            gap: 4px;
        }
        
        .navbar-nav .nav-link {
            color: var(--text-gray);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 10px 18px;
            border-radius: 50px;
            transition: var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        
        .navbar-nav .nav-link:hover {
            color: var(--text-white);
            background: rgba(197,160,89,0.08);
        }
        
        .navbar-nav .nav-link.active {
            color: var(--accent-amber);
            background: rgba(197,160,89,0.14);
            font-weight: 600;
        }
        
        .navbar-toggler {
            border: 1px solid var(--border-subtle);
            border-radius: 8px;
            padding: 8px 12px;
            color: var(--text-white);
        }
        
        .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%28245,245,247,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        
        .auth-buttons-desktop {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: 8px;
        }
        
        .btn-login,
        .btn-signup {
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.3px;
            transition: var(--transition-fast);
            border: none;
        }
        
        .btn-login {
            background: transparent;
            color: var(--text-white);
            border: 1px solid var(--border-subtle);
        }
        
        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-amber);
            background: rgba(197,160,89,0.06);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: #121212;
            box-shadow: 0 4px 16px rgba(255,191,0,0.25);
        }
        
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 22px rgba(255,191,0,0.4);
            color: #121212;
        }
        
        .auth-buttons-mobile {
            display: none;
            gap: 10px;
            padding-top: 12px;
            flex-wrap: wrap;
        }
        
        /* ===== HERO SECTION ===== */
        .hero-section {
            background: linear-gradient(150deg, #1C1C1E 0%, #121212 55%, #1A1815 100%);
            padding: 90px 0 70px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-subtle);
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(197,160,89,0.15), transparent 65%);
            border-radius: 50%;
        }
        
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(255,191,0,0.08), transparent 60%);
            border-radius: 50%;
        }
        
        .hero-inner {
            position: relative;
            z-index: 2;
        }
        
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(197,160,89,0.12);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            padding: 8px 18px;
            font-size: 0.85rem;
            color: var(--accent-amber);
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
        }
        
        .hero-tag i {
            color: var(--accent-gold);
        }
        
        .hero-title {
            font-family: var(--font-display);
            font-size: 2.9rem;
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-gray);
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        
        .invite-card {
            background: rgba(28,28,30,0.9);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 30px;
            max-width: 460px;
            box-shadow: var(--shadow-soft);
        }
        
        .invite-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .invite-card h3 i {
            color: var(--accent-amber);
        }
        
        .invite-progress-wrap {
            margin: 16px 0 10px;
        }
        
        .invite-progress-info {
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-gray);
            margin-bottom: 6px;
        }
        
        .invite-progress {
            height: 10px;
            background: #2A2A2C;
            border-radius: 50px;
            overflow: hidden;
        }
        
        .invite-progress-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-amber));
            border-radius: 50px;
            transition: width 1s ease;
            width: 65%;
        }
        
        .invite-reward {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--accent-amber);
            margin: 14px 0 18px;
        }
        
        .invite-reward i {
            font-size: 1.1rem;
        }
        
        .btn-invite {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: #121212;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 50px;
            border: none;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(255,191,0,0.3);
        }
        
        .btn-invite:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(255,191,0,0.45);
            color: #121212;
        }
        
        .btn-invite:active {
            transform: translateY(0) scale(0.98);
        }
        
        .hero-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0,0,0,0.5);
            border: 1px solid var(--border-subtle);
            min-height: 300px;
            background: #1A1A1C;
        }
        
        .hero-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 300px;
        }
        
        .hero-image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 30px 25px 22px;
            background: linear-gradient(to top, rgba(18,18,18,0.95), rgba(18,18,18,0.3), transparent);
        }
        
        .hero-image-overlay span {
            display: inline-block;
            background: rgba(255,191,0,0.15);
            border: 1px solid var(--border-gold);
            color: var(--accent-amber);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.4px;
        }
        
        /* ===== SECTION COMMON ===== */
        .section-block {
            padding: var(--section-gap) 0;
        }
        
        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        
        .section-header {
            margin-bottom: 46px;
        }
        
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent-gold);
            margin-bottom: 10px;
        }
        
        .section-title {
            font-family: var(--font-display);
            font-size: 2.1rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        
        .section-desc {
            font-size: 1rem;
            color: var(--text-gray);
            max-width: 680px;
            line-height: 1.7;
        }
        
        /* ===== PAIN POINTS ===== */
        .pain-card {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 26px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .pain-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, #FF6B6B, #D32F2F);
        }
        
        .pain-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-soft);
            border-color: var(--border-gold);
        }
        
        .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(211,47,47,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #FF6B6B;
            margin-bottom: 18px;
        }
        
        .pain-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 10px;
        }
        
        .pain-card p {
            font-size: 0.92rem;
            color: var(--text-gray);
            line-height: 1.65;
            margin-bottom: 0;
        }
        
        /* ===== SOLUTION ===== */
        .solution-feature {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-subtle);
        }
        
        .solution-feature:last-child {
            border-bottom: none;
        }
        
        .solution-index {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: #121212;
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
        }
        
        .solution-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        
        .solution-content p {
            font-size: 0.92rem;
            color: var(--text-gray);
            line-height: 1.65;
            margin-bottom: 0;
        }
        
        .solution-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-soft);
            position: sticky;
            top: 100px;
        }
        
        .solution-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 380px;
        }
        
        /* ===== RESULTS ===== */
        .result-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 30px;
        }
        
        .stat-item {
            flex: 1;
            min-width: 140px;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: var(--transition);
        }
        
        .stat-item:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold);
        }
        
        .stat-number {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-amber);
            display: block;
            margin-bottom: 6px;
        }
        
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-gray);
            letter-spacing: 0.5px;
        }
        
        /* ===== TESTIMONIALS ===== */
        .testimonial-card {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 26px;
            height: 100%;
            position: relative;
            transition: var(--transition);
        }
        
        .testimonial-card:hover {
            transform: translateY(-3px);
            border-color: var(--border-gold);
            box-shadow: var(--shadow-soft);
        }
        
        .testimonial-quote {
            font-size: 0.92rem;
            color: var(--text-gray);
            line-height: 1.7;
            margin-bottom: 20px;
            position: relative;
            padding-left: 18px;
            border-left: 3px solid var(--accent-gold);
        }
        
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .testimonial-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, #C5A059, #FFBF00);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #121212;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
        }
        
        .testimonial-name {
            font-weight: 600;
            color: var(--text-white);
            font-size: 0.95rem;
        }
        
        .testimonial-role {
            font-size: 0.8rem;
            color: var(--text-gray);
        }
        
        /* ===== FLOW / STEPS ===== */
        .step-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 24px 0;
            border-bottom: 1px dashed var(--border-subtle);
            position: relative;
        }
        
        .step-item:last-child {
            border-bottom: none;
        }
        
        .step-number {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            border: 2px solid var(--border-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent-gold);
            background: rgba(197,160,89,0.06);
        }
        
        .step-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-gray);
            line-height: 1.65;
            margin-bottom: 0;
        }
        
        /* ===== FAQ ===== */
        .accordion-item {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        
        .accordion-button {
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.98rem;
            padding: 20px 24px;
            border: none;
            box-shadow: none;
        }
        
        .accordion-button:not(.collapsed) {
            background: rgba(197,160,89,0.08);
            color: var(--accent-amber);
            box-shadow: none;
        }
        
        .accordion-button::after {
            filter: brightness(0) invert(1);
        }
        
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(197,160,89,0.3);
            border-color: var(--border-gold);
        }
        
        .accordion-body {
            color: var(--text-gray);
            font-size: 0.92rem;
            line-height: 1.7;
            padding: 18px 24px 22px;
        }
        
        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1C1C1E 0%, #252528 50%, #1A1815 100%);
            border-radius: var(--radius-xl);
            padding: 60px 40px;
            text-align: center;
            border: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }
        
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(255,191,0,0.12), transparent 60%);
            border-radius: 50%;
        }
        
        .cta-title {
            font-family: var(--font-display);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        
        .cta-desc {
            color: var(--text-gray);
            max-width: 540px;
            margin: 0 auto 28px;
            font-size: 1rem;
            line-height: 1.7;
        }
        
        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: #121212;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 16px 36px;
            border-radius: 50px;
            border: none;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(255,191,0,0.35);
        }
        
        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255,191,0,0.5);
            color: #121212;
        }
        
        .btn-cta-primary:active {
            transform: translateY(0) scale(0.98);
        }
        
        /* ===== FAB ===== */
        .fab-floating {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 1050;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(18,18,18,0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(18,18,18,0.75), rgba(18,18,18,0.75)), linear-gradient(135deg, #00F0FF, #FF007F);
            background-clip: padding-box, border-box;
            background-origin: padding-box, border-box;
            box-shadow: 0 0 18px rgba(0,240,255,0.45);
            opacity: 0.65;
            transition: var(--transition);
            cursor: pointer;
            color: var(--text-white);
            font-size: 1.4rem;
            position: relative;
        }
        
        .fab-floating:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0,240,255,0.7);
            color: #00F0FF;
        }
        
        .fab-floating:active {
            transform: scale(0.95);
            border-color: #FF007F;
            color: #FF007F;
        }
        
        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #121212;
            animation: fabPulse 2s infinite;
        }
        
        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(255,0,127,0.6); }
            50% { box-shadow: 0 0 0 6px rgba(255,0,127,0); }
        }
        
        /* ===== FOOTER ===== */
        .site-footer {
            background: #0E0E0E;
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            margin-top: 20px;
        }
        
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-display);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        
        .footer-brand .brand-icon {
            width: 34px;
            height: 34px;
            font-size: 0.85rem;
        }
        
        .footer-desc {
            color: var(--text-gray);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 340px;
            margin-bottom: 16px;
        }
        
        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            color: var(--accent-gold);
            background: rgba(197,160,89,0.08);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            padding: 6px 14px;
        }
        
        .footer-badge i {
            font-size: 0.85rem;
        }
        
        .footer-heading {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: var(--text-gray);
            font-size: 0.9rem;
            transition: var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        
        .footer-links a::before {
            content: '›';
            color: var(--accent-gold);
            font-weight: 700;
        }
        
        .footer-links a:hover {
            color: var(--accent-amber);
            transform: translateX(3px);
        }
        
        .footer-copyright {
            border-top: 1px solid var(--border-subtle);
            margin-top: 40px;
            padding-top: 22px;
            font-size: 0.82rem;
            color: var(--text-gray);
            text-align: center;
            line-height: 1.6;
        }
        
        /* ===== RESPONSIVE ===== */
        @media (max-width: 991px) {
            .hero-title {
                font-size: 2.3rem;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .cta-title {
                font-size: 1.8rem;
            }
            
            .auth-buttons-desktop {
                margin-left: 0;
                margin-top: 10px;
                flex-wrap: wrap;
            }
            
            .solution-image-wrap {
                position: relative;
                top: auto;
                margin-top: 20px;
            }
        }
        
        @media (max-width: 767px) {
            :root {
                --section-gap: 55px;
            }
            
            .hero-section {
                padding: 60px 0 45px;
            }
            
            .hero-title {
                font-size: 1.9rem;
            }
            
            .hero-subtitle {
                font-size: 0.95rem;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
            
            .invite-card {
                padding: 20px 18px;
            }
            
            .cta-section {
                padding: 40px 22px;
            }
            
            .cta-title {
                font-size: 1.5rem;
            }
            
            .auth-buttons-desktop {
                display: none;
            }
            
            .auth-buttons-mobile {
                display: flex;
            }
            
            .stat-item {
                min-width: 100%;
            }
            
            .navbar-brand {
                font-size: 1.1rem;
            }
            
            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
            
            .fab-floating {
                left: 14px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                border-radius: 12px;
            }
            
            .result-stats {
                gap: 12px;
            }
            
            .pain-card {
                padding: 20px 18px;
            }
            
            .testimonial-card {
                padding: 22px 18px;
            }
        }
        
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.6rem;
            }
            
            .section-title {
                font-size: 1.35rem;
            }
            
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            
            .navbar {
                padding: 12px 0;
            }
            
            .btn-invite,
            .btn-cta-primary {
                width: 100%;
                justify-content: center;
            }
            
            .invite-card {
                padding: 16px 14px;
            }
            
            .step-number {
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
            
            .solution-feature {
                flex-direction: column;
                gap: 12px;
            }
            
            .footer-copyright {
                font-size: 0.75rem;
            }
        }