/* roulang page: index */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #3B82F6;
            --green: #10B981;
            --orange: #F59E0B;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-dark: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: rgba(100, 116, 139, 0.12);
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05), 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 12px 32px rgba(15, 23, 42, 0.08);
            --font-sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "Inter", "Roboto Mono", monospace;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            transition: all 0.2s ease;
        }

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

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

        /* Header & Nav */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: 0 1px 8px rgba(15, 23, 42, 0.04);
        }

        .header-top {
            padding: 14px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-btn {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: all 0.2s ease;
        }

        .header-btn-login {
            background: #F1F5F9;
            color: var(--text-body);
            border: 1px solid var(--border);
        }

        .header-btn-login:hover {
            background: #E2E8F0;
            color: var(--text-dark);
        }

        .header-btn-scan {
            background: var(--primary);
            color: #FFFFFF;
            border: 1px solid var(--primary);
        }

        .header-btn-scan:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .chip-nav {
            padding: 8px 0 12px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            display: flex;
            gap: 8px;
            scrollbar-width: thin;
            scrollbar-color: #CBD5E1 transparent;
            position: relative;
        }

        .chip-nav::-webkit-scrollbar {
            height: 4px;
        }

        .chip-nav::-webkit-scrollbar-track {
            background: transparent;
        }

        .chip-nav::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 4px;
        }

        .chip {
            flex-shrink: 0;
            padding: 7px 16px;
            border-radius: 20px;
            background: #F1F5F9;
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .chip:hover {
            background: #DBEAFE;
            color: var(--primary-dark);
        }

        .chip.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        }

        .chip-nav-hint {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 40px;
            height: 40px;
            pointer-events: none;
            background: linear-gradient(to right, transparent, #FFFFFF);
            display: flex;
            align-items: center;
            justify-content: flex-end;
            color: #94A3B8;
            font-size: 12px;
        }

        /* Hero */
        .hero-section {
            background-color: var(--bg);
            position: relative;
            overflow: hidden;
            padding: 64px 0 56px;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/a5aefd279b069c3b.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
        }

        .hero-container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 400px;
            gap: 48px;
            align-items: center;
        }

        .hero-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .hero-subtitle {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 520px;
        }

        .hero-cta-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #FFFFFF;
            border: 1px solid var(--primary);
            box-shadow: 0 2px 10px rgba(37, 99, 235, 0.2);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-outline {
            background: #FFFFFF;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background: #EFF6FF;
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .invite-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 24px;
        }

        .invite-card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .invite-reward-list {
            list-style: none;
            margin-bottom: 16px;
        }

        .invite-reward-list li {
            font-size: 13px;
            color: var(--text-body);
            padding: 6px 0;
            border-bottom: 1px dashed #E2E8F0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .invite-reward-list li:last-child {
            border-bottom: none;
        }

        .reward-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .reward-icon-green {
            background: #D1FAE5;
            color: var(--green);
        }

        .reward-icon-orange {
            background: #FEF3C7;
            color: var(--orange);
        }

        .reward-icon-blue {
            background: #DBEAFE;
            color: var(--primary);
        }

        .progress-label {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .progress-bar-wrap {
            height: 8px;
            background: #F1F5F9;
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .progress-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 8px;
            transition: width 0.6s ease;
            width: 68%;
        }

        .invite-btn {
            width: 100%;
            padding: 12px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            transition: all 0.2s ease;
            border: 1px solid var(--primary);
        }

        .invite-btn:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }

        /* Section common */
        .section {
            padding: 56px 0;
        }

        .section-alt {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .tag-blue {
            background: #DBEAFE;
            color: var(--primary-dark);
        }

        .tag-green {
            background: #D1FAE5;
            color: #065F46;
        }

        .tag-orange {
            background: #FEF3C7;
            color: #92400E;
        }

        .section-title {
            font-size: 24px;
            font-weight: 650;
            line-height: 1.3;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            max-width: 720px;
        }

        /* Metric board */
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .metric-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 20px;
            transition: all 0.25s ease;
            text-align: center;
        }

        .metric-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .metric-number {
            font-family: var(--font-mono);
            font-size: 30px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.02em;
            margin-bottom: 4px;
        }

        .metric-number .unit {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            margin-left: 2px;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .metric-trend {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            margin-top: 6px;
            padding: 2px 8px;
            border-radius: 10px;
        }

        .trend-up {
            background: #D1FAE5;
            color: #065F46;
        }

        .trend-hot {
            background: #FEF3C7;
            color: #92400E;
        }

        /* Capability cards */
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .capability-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all 0.25s ease;
        }

        .capability-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .capability-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 14px;
            flex-shrink: 0;
        }

        .icon-blue {
            background: #DBEAFE;
            color: var(--primary);
        }

        .icon-green {
            background: #D1FAE5;
            color: var(--green);
        }

        .icon-orange {
            background: #FEF3C7;
            color: var(--orange);
        }

        .capability-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .capability-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Progress section - 进行中 */
        .progress-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .progress-item {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: all 0.2s ease;
        }

        .progress-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
            box-shadow: var(--shadow-sm);
        }

        .progress-indicator {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            flex-shrink: 0;
        }

        .indicator-live {
            background: var(--green);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
            animation: pulseLive 2s infinite;
        }

        @keyframes pulseLive {
            0%,
            100% {
                box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(16, 185, 129, 0.05);
            }
        }

        .indicator-working {
            background: var(--orange);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
        }

        .progress-item-content {
            flex: 1;
        }

        .progress-item-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 2px;
        }

        .progress-item-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Milestone */
        .milestone-track {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            position: relative;
            padding: 0 0 16px;
        }

        .milestone-track::before {
            content: '';
            position: absolute;
            top: 14px;
            left: 0;
            right: 0;
            height: 2px;
            background: #E2E8F0;
            border-radius: 2px;
        }

        .milestone-item {
            text-align: center;
            position: relative;
            padding: 0 8px;
        }

        .milestone-dot {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #FFFFFF;
            border: 3px solid var(--primary);
            margin: 0 auto 10px;
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            color: var(--primary);
        }

        .milestone-dot.done {
            background: var(--primary);
            color: #FFFFFF;
        }

        .milestone-dot.current {
            background: #FFFFFF;
            border-color: var(--orange);
            color: var(--orange);
        }

        .milestone-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 2px;
        }

        .milestone-detail {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Comparison */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .comparison-card {
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 24px;
            background: #FFFFFF;
        }

        .comparison-card.old {
            background: #F8FAFC;
            border-color: #E2E8F0;
        }

        .comparison-card.new {
            background: #FFFFFF;
            border-color: rgba(37, 99, 235, 0.3);
            box-shadow: var(--shadow-md);
        }

        .comparison-title {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-row {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px dashed #E2E8F0;
            font-size: 14px;
            color: var(--text-body);
        }

        .comparison-row:last-child {
            border-bottom: none;
        }

        .comparison-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            flex-shrink: 0;
            font-weight: 700;
        }

        .icon-check {
            background: #D1FAE5;
            color: #065F46;
        }

        .icon-x {
            background: #FEE2E2;
            color: #991B1B;
        }

        .badge-new {
            display: inline-block;
            background: var(--green);
            color: #FFFFFF;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 8px;
            border-radius: 4px;
            margin-left: 6px;
        }

        /* Update log */
        .update-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border-left: 2px solid #E2E8F0;
            padding-left: 24px;
        }

        .update-item {
            position: relative;
            padding: 12px 0 16px 16px;
        }

        .update-item::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 18px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid #FFFFFF;
            box-shadow: 0 0 0 2px #DBEAFE;
        }

        .update-date {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
            margin-bottom: 4px;
        }

        .update-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }

        .update-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* News list */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .news-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .news-cover {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: #F1F5F9;
        }

        .news-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-meta {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 6px;
            font-family: var(--font-mono);
        }

        .news-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 6px;
            transition: color 0.2s ease;
        }

        .news-card:hover .news-title {
            color: var(--primary);
        }

        .news-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Brand intro */
        .brand-intro {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 36px 40px;
        }

        .brand-intro p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 14px;
        }

        .brand-intro p:last-child {
            margin-bottom: 0;
        }

        /* Quick FAQ */
        .quick-faq-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .quick-faq-item {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 18px 20px;
            transition: all 0.2s ease;
        }

        .quick-faq-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
            box-shadow: var(--shadow-sm);
        }

        .quick-faq-q {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .quick-faq-a {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* FAQ accordion */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all 0.2s ease;
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
        }

        .faq-question {
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: all 0.2s ease;
            user-select: none;
        }

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

        .faq-toggle {
            font-size: 18px;
            color: var(--text-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
            font-weight: 300;
        }

        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 20px 16px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* Subscribe form */
        .subscribe-wrap {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 36px 40px;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .subscribe-title {
            font-size: 20px;
            font-weight: 650;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .subscribe-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 400px;
            margin: 0 auto;
        }

        .subscribe-input {
            flex: 1;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid #CBD5E1;
            background: #F8FAFC;
            font-size: 14px;
            color: var(--text-dark);
            transition: all 0.2s ease;
        }

        .subscribe-input:focus {
            border-color: var(--primary);
            background: #FFFFFF;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
            outline: none;
        }

        .subscribe-btn {
            padding: 12px 24px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            border: 1px solid var(--primary);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .subscribe-btn:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }

        .subscribe-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 12px;
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 40px 0 24px;
            font-size: 13px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 13px;
            line-height: 1.7;
            color: #94A3B8;
            max-width: 300px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 600;
            color: #E2E8F0;
            margin-bottom: 12px;
        }

        .footer-links {
            list-style: none;
        }

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

        .footer-links a {
            color: #94A3B8;
            font-size: 13px;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: #FFFFFF;
        }

        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: #64748B;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 30px;
            }
            .metric-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .capability-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .milestone-track {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .milestone-track::before {
                display: none;
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .hero-section {
                padding: 40px 0 40px;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .container {
                padding: 0 16px;
            }
            .metric-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .metric-number {
                font-size: 24px;
            }
            .capability-grid {
                grid-template-columns: 1fr;
            }
            .progress-list {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .quick-faq-list {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-btn {
                width: 100%;
            }
            .header-actions {
                gap: 6px;
            }
            .header-btn {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 22px;
                line-height: 1.35;
            }
            .metric-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .metric-card {
                padding: 14px;
            }
            .metric-number {
                font-size: 20px;
            }
            .section-title {
                font-size: 20px;
            }
            .capability-card {
                padding: 18px;
            }
            .brand-intro {
                padding: 24px 20px;
            }
            .subscribe-wrap {
                padding: 24px 20px;
            }
            .comparison-card {
                padding: 16px;
            }
            .news-cover {
                height: 140px;
            }
            .chip-nav-hint {
                display: none;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #3B82F6;
            --green: #10B981;
            --orange: #F59E0B;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-dark: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: rgba(100, 116, 139, 0.12);
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05), 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 12px 32px rgba(15, 23, 42, 0.08);
            --font-sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "Inter", "Roboto Mono", monospace;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            transition: all 0.2s ease;
        }

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

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

        /* Header & Nav */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: 0 1px 8px rgba(15, 23, 42, 0.04);
        }

        .header-top {
            padding: 14px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-btn {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: all 0.2s ease;
        }

        .header-btn-login {
            background: #F1F5F9;
            color: var(--text-body);
            border: 1px solid var(--border);
        }

        .header-btn-login:hover {
            background: #E2E8F0;
            color: var(--text-dark);
        }

        .header-btn-scan {
            background: var(--primary);
            color: #FFFFFF;
            border: 1px solid var(--primary);
        }

        .header-btn-scan:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .chip-nav {
            padding: 8px 0 12px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            display: flex;
            gap: 8px;
            scrollbar-width: thin;
            scrollbar-color: #CBD5E1 transparent;
            position: relative;
        }

        .chip-nav::-webkit-scrollbar {
            height: 4px;
        }

        .chip-nav::-webkit-scrollbar-track {
            background: transparent;
        }

        .chip-nav::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 4px;
        }

        .chip {
            flex-shrink: 0;
            padding: 7px 16px;
            border-radius: 20px;
            background: #F1F5F9;
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .chip:hover {
            background: #DBEAFE;
            color: var(--primary-dark);
        }

        .chip.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        }

        .chip-nav-hint {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 40px;
            height: 40px;
            pointer-events: none;
            background: linear-gradient(to right, transparent, #FFFFFF);
            display: flex;
            align-items: center;
            justify-content: flex-end;
            color: #94A3B8;
            font-size: 12px;
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 24px 0 12px;
            background: var(--bg);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-sep {
            color: #CBD5E1;
            font-size: 11px;
        }

        .breadcrumb-current {
            color: var(--text-body);
            font-weight: 500;
        }

        /* Classification Header */
        .class-header-section {
            background: var(--bg);
            padding: 24px 0 40px;
            border-bottom: 1px solid var(--border);
        }

        .class-header-wrap {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
        }

        .class-header-content {
            flex: 1;
            min-width: 280px;
        }

        .class-header-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(37, 99, 235, 0.06);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .class-header-badge-dot {
            width: 6px;
            height: 6px;
            background: var(--green);
            border-radius: 50%;
            display: inline-block;
        }

        .class-header-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }

        .class-header-desc {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
            max-width: 640px;
        }

        .class-header-image {
            width: 220px;
            height: 160px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }

        .class-header-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Section */
        .section {
            padding: 48px 0;
        }

        .section-alt {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Prediction List Cards */
        .prediction-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .prediction-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .prediction-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .prediction-card-top {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 12px;
        }

        .prediction-card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            background: #F1F5F9;
            color: var(--text-body);
            white-space: nowrap;
        }

        .prediction-card-tag.hot {
            background: rgba(245, 158, 11, 0.1);
            color: #D97706;
        }

        .prediction-card-tag.live {
            background: rgba(16, 185, 129, 0.1);
            color: #059669;
        }

        .prediction-card-date {
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .prediction-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
        }

        .prediction-card-summary {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            flex: 1;
        }

        .prediction-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
        }

        .prediction-card-meta-item {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .prediction-card-meta-icon {
            width: 4px;
            height: 4px;
            background: #CBD5E1;
            border-radius: 50%;
        }

        /* Data Insight Block */
        .data-insight-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .data-insight-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid var(--border);
            text-align: center;
            transition: all 0.25s ease;
        }

        .data-insight-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .data-insight-value {
            font-size: 28px;
            font-weight: 700;
            font-family: var(--font-mono);
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .data-insight-label {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

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

        .tag-item {
            padding: 8px 16px;
            border-radius: 20px;
            background: #F1F5F9;
            font-size: 13px;
            color: var(--text-body);
            transition: all 0.2s ease;
            border: 1px solid transparent;
        }

        .tag-item:hover {
            background: #DBEAFE;
            color: var(--primary-dark);
            border-color: rgba(37, 99, 235, 0.15);
        }

        .tag-item.highlight {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }

        .tag-item.highlight:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
        }

        /* Subscribe Area */
        .subscribe-wrap {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
        }

        .subscribe-content {
            flex: 1;
            min-width: 280px;
        }

        .subscribe-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .subscribe-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .subscribe-input {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-dark);
            background: #F8FAFC;
            width: 240px;
            transition: all 0.2s ease;
        }

        .subscribe-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: #FFFFFF;
            outline: none;
        }

        .subscribe-btn {
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.2s ease;
            border: 1px solid var(--primary);
        }

        .subscribe-btn:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        /* Mini FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 18px 22px;
            transition: all 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .faq-q-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .faq-answer {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            padding-left: 34px;
        }

        /* Trust Bar */
        .trust-bar {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
        }

        .trust-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(37, 99, 235, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .trust-text {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
            line-height: 1.5;
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #E2E8F0;
            padding: 40px 0 24px;
            margin-top: 40px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 28px;
            border-bottom: 1px solid rgba(148, 163, 184, 0.15);
        }

        .footer-brand {
            font-size: 17px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .footer-brand-desc {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links li a {
            font-size: 13px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }

        .footer-links li a:hover {
            color: #FFFFFF;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            font-size: 12px;
            color: #64748B;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .data-insight-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trust-bar {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .prediction-grid {
                grid-template-columns: 1fr;
            }
            .class-header-wrap {
                padding: 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .class-header-image {
                width: 100%;
                height: 180px;
            }
            .class-header-title {
                font-size: 24px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .subscribe-wrap {
                padding: 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-form {
                width: 100%;
            }
            .subscribe-input {
                flex: 1;
                min-width: 0;
            }
            .section {
                padding: 36px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-actions {
                gap: 8px;
            }
            .header-btn {
                padding: 7px 12px;
                font-size: 12px;
            }
            .logo-text {
                font-size: 15px;
            }
            .class-header-wrap {
                padding: 20px;
            }
            .class-header-title {
                font-size: 21px;
            }
            .data-insight-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .data-insight-value {
                font-size: 22px;
            }
            .trust-bar {
                grid-template-columns: 1fr;
            }
            .subscribe-btn {
                width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #3B82F6;
            --green: #10B981;
            --orange: #F59E0B;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-dark: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: rgba(100, 116, 139, 0.12);
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05), 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 12px 32px rgba(15, 23, 42, 0.08);
            --font-sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "Inter", "Roboto Mono", monospace;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            transition: all 0.2s ease;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Nav */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: 0 1px 8px rgba(15, 23, 42, 0.04);
        }
        .header-top {
            padding: 14px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-btn {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
        }
        .header-btn-login {
            background: #F1F5F9;
            color: var(--text-body);
            border: 1px solid var(--border);
        }
        .header-btn-login:hover {
            background: #E2E8F0;
            color: var(--text-dark);
        }
        .header-btn-scan {
            background: var(--primary);
            color: #FFFFFF;
            border: 1px solid var(--primary);
        }
        .header-btn-scan:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .chip-nav {
            padding: 8px 0 12px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            display: flex;
            gap: 8px;
            scrollbar-width: thin;
            scrollbar-color: #CBD5E1 transparent;
            position: relative;
        }
        .chip-nav::-webkit-scrollbar {
            height: 4px;
        }
        .chip-nav::-webkit-scrollbar-track {
            background: transparent;
        }
        .chip-nav::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 4px;
        }
        .chip {
            flex-shrink: 0;
            padding: 7px 16px;
            border-radius: 20px;
            background: #F1F5F9;
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .chip:hover {
            background: #DBEAFE;
            color: var(--primary-dark);
        }
        .chip.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        }
        .chip-nav-hint {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 40px;
            height: 40px;
            pointer-events: none;
            background: linear-gradient(to right, transparent, #FFFFFF);
            display: flex;
            align-items: center;
            justify-content: flex-end;
            color: #94A3B8;
            font-size: 12px;
        }
        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 16px 0 0;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb-sep {
            color: #CBD5E1;
        }
        .breadcrumb-current {
            color: var(--text-body);
            font-weight: 500;
        }
        /* Category Header */
        .category-header {
            padding: 32px 0 28px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
            background: linear-gradient(135deg, #F0F7FF 0%, #F8FAFC 100%);
        }
        .category-header::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -40px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-header-inner {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }
        .category-h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin: 12px 0 10px;
        }
        .category-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
        }
        /* Live ticker */
        .live-ticker {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 18px 24px;
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 24px;
        }
        .live-dot {
            width: 8px;
            height: 8px;
            background: var(--green);
            border-radius: 50%;
            animation: pulse 2s infinite;
            flex-shrink: 0;
            margin-right: 6px;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }
        .live-label {
            display: flex;
            align-items: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--green);
            white-space: nowrap;
        }
        .live-text {
            font-size: 14px;
            color: var(--text-body);
            flex: 1;
            min-width: 200px;
        }
        /* Stats strip */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 14px;
            padding: 20px 0;
        }
        .stat-mini-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 18px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s ease;
        }
        .stat-mini-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .stat-mini-value {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-mini-value.green {
            color: var(--green);
        }
        .stat-mini-value.orange {
            color: var(--orange);
        }
        .stat-mini-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        /* Match cards */
        .section-block {
            padding: 48px 0;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 24px;
            gap: 16px;
            flex-wrap: wrap;
        }
        .section-title {
            font-size: 22px;
            font-weight: 650;
            color: var(--text-dark);
            line-height: 1.3;
            letter-spacing: -0.005em;
        }
        .section-subtitle {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .match-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 18px;
        }
        .match-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
        }
        .match-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.35);
        }
        .match-card-img {
            height: 140px;
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
        }
        .match-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .match-card:hover .match-card-img img {
            transform: scale(1.04);
        }
        .match-card-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.55) 0%, rgba(15, 23, 42, 0.1) 60%, transparent 100%);
            display: flex;
            align-items: flex-end;
            padding: 12px 16px;
            gap: 8px;
        }
        .match-status-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--text-dark);
        }
        .match-status-tag.live {
            background: rgba(16, 185, 129, 0.92);
            color: #FFFFFF;
        }
        .match-status-tag.upcoming {
            background: rgba(245, 158, 11, 0.92);
            color: #FFFFFF;
        }
        .match-status-tag.finished {
            background: rgba(100, 116, 139, 0.75);
            color: #FFFFFF;
        }
        .match-card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .match-league {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 8px;
        }
        .match-league i {
            font-size: 11px;
            color: var(--primary-light);
        }
        .match-teams {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            margin-bottom: 10px;
        }
        .match-team {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            flex: 1;
            text-align: center;
            line-height: 1.3;
        }
        .match-score {
            font-family: var(--font-mono);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .match-score.dash {
            color: var(--text-muted);
            font-size: 20px;
        }
        .match-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 12px;
            color: var(--text-muted);
            padding-top: 10px;
            border-top: 1px solid var(--border);
            margin-top: auto;
        }
        .match-meta-item {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        /* Results list */
        .result-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 10px;
        }
        .result-row {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s ease;
        }
        .result-row:hover {
            border-color: rgba(37, 99, 235, 0.3);
            box-shadow: var(--shadow-md);
        }
        .result-league {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
            min-width: 80px;
        }
        .result-teams {
            flex: 1;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-dark);
            text-align: center;
            min-width: 160px;
        }
        .result-score {
            font-family: var(--font-mono);
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .result-status {
            font-size: 12px;
            color: var(--text-muted);
            min-width: 60px;
            text-align: right;
        }
        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-chip {
            padding: 6px 16px;
            border-radius: 999px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            color: var(--text-body);
            font-size: 13px;
            font-weight: 500;
            transition: all 0.2s ease;
            box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
        }
        .tag-chip:hover {
            background: #DBEAFE;
            color: var(--primary-dark);
            border-color: rgba(37, 99, 235, 0.3);
        }
        /* Subscription form */
        .subscribe-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 36px 32px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .subscribe-input {
            flex: 1;
            min-width: 220px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid #E2E8F0;
            background: #F8FAFC;
            font-size: 14px;
            color: var(--text-dark);
            transition: all 0.2s ease;
        }
        .subscribe-input:focus {
            border-color: var(--primary);
            background: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }
        .btn-primary {
            background: var(--primary);
            color: #FFFFFF;
            font-weight: 500;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            white-space: nowrap;
            border: 1px solid var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }
        .btn-outline {
            background: #FFFFFF;
            color: var(--primary);
            font-weight: 500;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            white-space: nowrap;
            border: 1px solid var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline:hover {
            background: #EFF6FF;
            border-color: var(--primary-dark);
        }
        /* Trust bar */
        .trust-bar {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            padding: 24px 0;
        }
        .trust-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        .trust-icon {
            width: 32px;
            height: 32px;
            background: #EFF6FF;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .trust-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
        }
        .trust-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 2px;
        }
        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #CBD5E1;
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand {
            font-size: 17px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 10px;
        }
        .footer-brand-desc {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col-title {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: #64748B;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .match-grid {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .category-h1 {
                font-size: 26px;
            }
            .section-block {
                padding: 36px 0;
            }
            .match-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .header-top {
                padding: 12px 0;
            }
            .header-btn {
                padding: 6px 12px;
                font-size: 12px;
            }
            .logo-text {
                font-size: 15px;
            }
            .subscribe-card {
                padding: 24px 18px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-input {
                min-width: 100%;
            }
            .btn-primary {
                justify-content: center;
                width: 100%;
            }
            .result-row {
                padding: 12px 14px;
                gap: 10px;
            }
            .result-league {
                min-width: auto;
                width: 100%;
                text-align: left;
            }
            .result-teams {
                min-width: auto;
                flex: 1;
                text-align: left;
                font-size: 13px;
            }
            .result-score {
                font-size: 16px;
            }
            .result-status {
                min-width: auto;
                width: 100%;
                text-align: left;
            }
        }
        @media (max-width: 520px) {
            .category-h1 {
                font-size: 22px;
            }
            .chip-nav {
                gap: 6px;
            }
            .chip {
                padding: 6px 12px;
                font-size: 13px;
            }
            .header-actions {
                gap: 8px;
            }
            .header-btn {
                padding: 5px 10px;
                font-size: 11px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
                border-radius: 8px;
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .stat-mini-value {
                font-size: 22px;
            }
            .match-card-img {
                height: 110px;
            }
            .match-team {
                font-size: 13px;
            }
            .match-score {
                font-size: 18px;
            }
            .trust-bar {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #3B82F6;
            --green: #10B981;
            --orange: #F59E0B;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-dark: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: rgba(100, 116, 139, 0.12);
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05), 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 12px 32px rgba(15, 23, 42, 0.08);
            --font-sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "Inter", "Roboto Mono", monospace;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary);
        }

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            transition: all 0.2s ease;
        }

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

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

        /* Header & Nav */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: 0 1px 8px rgba(15, 23, 42, 0.04);
        }

        .header-top {
            padding: 14px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-btn {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: all 0.2s ease;
        }

        .header-btn-login {
            background: #F1F5F9;
            color: var(--text-body);
            border: 1px solid var(--border);
        }
        .header-btn-login:hover {
            background: #E2E8F0;
            color: var(--text-dark);
        }

        .header-btn-scan {
            background: var(--primary);
            color: #FFFFFF;
            border: 1px solid var(--primary);
        }
        .header-btn-scan:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .chip-nav {
            padding: 8px 0 12px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            display: flex;
            gap: 8px;
            scrollbar-width: thin;
            scrollbar-color: #CBD5E1 transparent;
            position: relative;
        }
        .chip-nav::-webkit-scrollbar {
            height: 4px;
        }
        .chip-nav::-webkit-scrollbar-track {
            background: transparent;
        }
        .chip-nav::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 4px;
        }

        .chip {
            flex-shrink: 0;
            padding: 7px 16px;
            border-radius: 20px;
            background: #F1F5F9;
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .chip:hover {
            background: #DBEAFE;
            color: var(--primary-dark);
        }
        .chip.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        }

        .chip-nav-hint {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 40px;
            height: 40px;
            pointer-events: none;
            background: linear-gradient(to right, transparent, #FFFFFF);
            display: flex;
            align-items: center;
            justify-content: flex-end;
            color: #94A3B8;
            font-size: 12px;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 20px 0 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb-sep {
            color: #CBD5E1;
        }
        .breadcrumb-current {
            color: var(--text-body);
            font-weight: 500;
        }

        /* Category H1 Area */
        .category-head-section {
            padding: 24px 0 32px;
        }
        .category-head-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }
        .category-head-desc {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            max-width: 800px;
        }

        /* Section Base */
        .section-block {
            padding: 40px 0 40px;
            border-top: 1px solid var(--border);
        }
        .section-block:first-of-type {
            border-top: none;
            padding-top: 0;
        }
        .section-title {
            font-size: 22px;
            font-weight: 650;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.6;
        }

        /* Data Board */
        .data-board-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .data-board-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 20px 22px;
            transition: all 0.25s ease;
        }
        .data-board-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .data-board-value {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            margin-bottom: 6px;
            line-height: 1.2;
        }
        .data-board-value .unit {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            margin-left: 2px;
        }
        .data-board-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }
        .data-board-badge {
            display: inline-block;
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 4px;
            margin-left: 8px;
            font-weight: 500;
        }
        .badge-green {
            background: #ECFDF5;
            color: #047857;
        }
        .badge-orange {
            background: #FFFBEB;
            color: #B45309;
        }
        .badge-blue {
            background: #EFF6FF;
            color: #1D4ED8;
        }

        /* Info List Main */
        .info-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }
        .info-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all 0.25s ease;
        }
        .info-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.3);
            transform: translateY(-2px);
        }
        .info-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .info-card-body {
            padding: 18px 20px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .info-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: #EFF6FF;
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .info-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .info-card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 10px;
        }
        .info-card-date {
            font-size: 12px;
            color: #94A3B8;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .info-card-date::before {
            content: "📅";
            font-size: 11px;
        }

        .list-more-btn {
            display: inline-block;
            margin-top: 24px;
            padding: 10px 24px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
            border: 1px solid var(--primary);
        }
        .list-more-btn:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #FFFFFF;
        }

        /* Tags */
        .tags-flex {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-item {
            padding: 8px 18px;
            background: #EFF6FF;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            border: 1px solid rgba(37, 99, 235, 0.15);
            transition: all 0.2s ease;
            cursor: default;
        }
        .tag-item:hover {
            background: #DBEAFE;
            border-color: rgba(37, 99, 235, 0.3);
            color: var(--primary-dark);
        }

        /* Topic Cards */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .topic-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 22px 20px;
            transition: all 0.25s ease;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .topic-card-icon {
            font-size: 28px;
            margin-bottom: 12px;
            display: block;
        }
        .topic-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .topic-card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Comparison */
        .compare-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            background: var(--card-bg);
            box-shadow: var(--shadow-sm);
        }
        .compare-table {
            width: 100%;
            min-width: 600px;
            border-collapse: collapse;
            font-size: 14px;
        }
        .compare-table th {
            background: #F8FAFC;
            padding: 14px 20px;
            text-align: left;
            font-weight: 600;
            color: var(--text-dark);
            border-bottom: 1px solid var(--border);
            white-space: nowrap;
        }
        .compare-table td {
            padding: 14px 20px;
            border-bottom: 1px solid var(--border);
            color: var(--text-body);
            line-height: 1.5;
            vertical-align: top;
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table .col-highlight {
            background: #F0F7FF;
            font-weight: 500;
            color: var(--text-dark);
        }
        .compare-check {
            color: var(--green);
            font-weight: 600;
        }
        .compare-dash {
            color: #CBD5E1;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .faq-question {
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: default;
            display: flex;
            align-items: center;
            gap: 10px;
            background: #FFFFFF;
        }
        .faq-question::before {
            content: "Q";
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background: #EFF6FF;
            width: 24px;
            height: 24px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .faq-answer {
            padding: 0 20px 16px 54px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* Subscribe CTA */
        .subscribe-card {
            background: linear-gradient(135deg, #1E40AF 0%, #2563EB 50%, #3B82F6 100%);
            border-radius: var(--radius-lg);
            padding: 40px 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            box-shadow: 0 8px 32px rgba(37, 99, 235, 0.25);
        }
        .subscribe-text {
            color: #FFFFFF;
            flex: 1;
            min-width: 260px;
        }
        .subscribe-text h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .subscribe-text p {
            font-size: 14px;
            opacity: 0.9;
            line-height: 1.6;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            min-width: 280px;
        }
        .subscribe-input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            background: #FFFFFF;
            color: var(--text-dark);
            font-size: 14px;
            border: 1px solid transparent;
            transition: all 0.2s ease;
        }
        .subscribe-input:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
        }
        .subscribe-btn {
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: #FFFFFF;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            border: 1px solid #FFFFFF;
            white-space: nowrap;
        }
        .subscribe-btn:hover {
            background: #E0EAFF;
            border-color: #E0EAFF;
            color: var(--primary-dark);
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #E2E8F0;
            padding: 40px 0 24px;
            margin-top: 56px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 28px;
        }
        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 10px;
        }
        .footer-brand-desc {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.6;
            max-width: 360px;
        }
        .footer-col-title {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
            font-size: 12px;
            color: #64748B;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .data-board-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .info-list-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
        }

        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
                gap: 8px;
            }
            .header-actions {
                gap: 8px;
            }
            .header-btn {
                padding: 6px 12px;
                font-size: 12px;
            }
            .category-head-title {
                font-size: 26px;
            }
            .section-block {
                padding: 28px 0 28px;
            }
            .info-list-grid {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .data-board-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .data-board-value {
                font-size: 22px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .subscribe-card {
                flex-direction: column;
                padding: 28px 24px;
            }
            .subscribe-form {
                width: 100%;
                min-width: auto;
            }
            .subscribe-input {
                min-width: 100%;
            }
            .subscribe-btn {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo-text {
                font-size: 15px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .category-head-title {
                font-size: 22px;
            }
            .data-board-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .data-board-card {
                padding: 14px 14px;
            }
            .data-board-value {
                font-size: 19px;
            }
            .data-board-label {
                font-size: 12px;
            }
            .section-title {
                font-size: 19px;
            }
            .info-card-img {
                height: 140px;
            }
            .info-card-body {
                padding: 14px 16px 12px;
            }
            .compare-table {
                min-width: 500px;
            }
            .compare-table th,
            .compare-table td {
                padding: 10px 14px;
                font-size: 13px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px 14px 42px;
                font-size: 13px;
            }
            .chip {
                padding: 6px 12px;
                font-size: 13px;
            }
            .header-btn {
                padding: 5px 10px;
                font-size: 11px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #3B82F6;
            --green: #10B981;
            --orange: #F59E0B;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-dark: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: rgba(100, 116, 139, 0.12);
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05), 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 12px 32px rgba(15, 23, 42, 0.08);
            --font-sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "Inter", "Roboto Mono", monospace;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            transition: all 0.2s ease;
        }

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

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

        /* Header & Nav */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: 0 1px 8px rgba(15, 23, 42, 0.04);
        }

        .header-top {
            padding: 14px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-btn {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: all 0.2s ease;
        }

        .header-btn-login {
            background: #F1F5F9;
            color: var(--text-body);
            border: 1px solid var(--border);
        }

        .header-btn-login:hover {
            background: #E2E8F0;
            color: var(--text-dark);
        }

        .header-btn-scan {
            background: var(--primary);
            color: #FFFFFF;
            border: 1px solid var(--primary);
        }

        .header-btn-scan:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .chip-nav {
            padding: 8px 0 12px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            display: flex;
            gap: 8px;
            scrollbar-width: thin;
            scrollbar-color: #CBD5E1 transparent;
            position: relative;
        }

        .chip-nav::-webkit-scrollbar {
            height: 4px;
        }

        .chip-nav::-webkit-scrollbar-track {
            background: transparent;
        }

        .chip-nav::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 4px;
        }

        .chip {
            flex-shrink: 0;
            padding: 7px 16px;
            border-radius: 20px;
            background: #F1F5F9;
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .chip:hover {
            background: #DBEAFE;
            color: var(--primary-dark);
        }

        .chip.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        }

        .chip-nav-hint {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 40px;
            height: 40px;
            pointer-events: none;
            background: linear-gradient(to right, transparent, #FFFFFF);
            display: flex;
            align-items: center;
            justify-content: flex-end;
            color: #94A3B8;
            font-size: 12px;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            padding: 20px 0 0;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color 0.2s ease;
        }

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

        .breadcrumb .separator {
            color: #CBD5E1;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* Section common */
        .section {
            padding: 48px 0 56px;
        }

        .section-alt {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 28px;
            max-width: 720px;
            line-height: 1.7;
        }

        /* Category H1 area */
        .cat-header {
            padding: 32px 0 28px;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
        }

        .cat-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            line-height: 1.25;
            margin: 12px 0 10px;
        }

        .cat-header .cat-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 800px;
            line-height: 1.8;
        }

        /* Channel matrix */
        .channel-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .channel-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: all 0.2s ease;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .channel-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.3);
        }

        .channel-card-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: #EFF6FF;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 18px;
            color: var(--primary);
        }

        .channel-card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }

        .channel-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Tags */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            padding: 7px 16px;
            border-radius: 20px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            color: var(--text-body);
            font-size: 13px;
            font-weight: 500;
            transition: all 0.2s ease;
            cursor: default;
        }

        .tag:hover {
            background: #EFF6FF;
            border-color: var(--primary-light);
            color: var(--primary);
        }

        .tag.highlight {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }

        /* Guide articles grid */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .guide-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s ease;
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .guide-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            background: #F1F5F9;
        }

        .guide-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: #EFF6FF;
            border-radius: 4px;
            padding: 2px 8px;
            margin-bottom: 8px;
            align-self: flex-start;
        }

        .guide-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .guide-card-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }

        .guide-card-meta {
            font-size: 12px;
            color: #94A3B8;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .guide-card-meta .dot {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: #CBD5E1;
        }

        /* View more button */
        .btn-view-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            background: #FFFFFF;
            border: 1px solid var(--primary);
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
            margin-top: 20px;
        }

        .btn-view-more:hover {
            background: #EFF6FF;
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s ease;
            position: relative;
        }

        .step-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .step-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 12px;
        }

        .step-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .step-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s ease;
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
        }

        .faq-question {
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            background: transparent;
            width: 100%;
            text-align: left;
            transition: background 0.2s ease;
        }

        .faq-question:hover {
            background: #F8FAFC;
        }

        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--text-muted);
            transition: transform 0.2s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }

        /* CTA form */
        .cta-section {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
        }

        .cta-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 16px;
        }

        .cta-input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-dark);
            background: #F8FAFC;
            transition: all 0.2s ease;
        }

        .cta-input:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: #FFFFFF;
        }

        .cta-input::placeholder {
            color: #94A3B8;
        }

        .btn-primary {
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            border: 1px solid var(--primary);
            transition: all 0.2s ease;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        /* Trust bar */
        .trust-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .trust-item {
            text-align: center;
            padding: 20px 16px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
        }

        .trust-item-icon {
            font-size: 22px;
            margin-bottom: 8px;
        }

        .trust-item-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }

        .trust-item-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #E2E8F0;
            padding: 40px 0 24px;
            margin-top: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            color: #94A3B8;
            font-size: 13px;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: #FFFFFF;
        }

        .footer-bottom {
            padding-top: 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: #64748B;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .trust-bar {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .channel-grid {
                grid-template-columns: 1fr;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .trust-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section {
                padding: 36px 0 40px;
            }
            .cat-header h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 20px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-input {
                min-width: 100%;
            }
            .btn-primary {
                width: 100%;
                text-align: center;
            }
            .header-actions {
                gap: 8px;
            }
            .header-btn {
                padding: 7px 12px;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .cat-header h1 {
                font-size: 22px;
            }
            .section-title {
                font-size: 18px;
            }
            .guide-card-img {
                height: 130px;
            }
            .trust-bar {
                grid-template-columns: 1fr;
            }
            .chip {
                padding: 6px 12px;
                font-size: 13px;
            }
            .logo-text {
                font-size: 15px;
            }
            .header-btn {
                padding: 6px 10px;
                font-size: 11px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .btn-view-more {
                width: 100%;
                justify-content: center;
            }
        }