/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --bg-primary: #0A0E17;
            --bg-panel: #111827;
            --bg-card: #131C2E;
            --bg-deep: #0D1420;
            --accent: #00E6A8;
            --accent-purple: #8B5CF6;
            --accent-gold: #FFC53D;
            --text-primary: #F0F4FA;
            --text-secondary: #A0AAB8;
            --text-muted: #8A94A6;
            --border-subtle: rgba(0, 230, 168, 0.15);
            --border-strong: rgba(0, 230, 168, 0.35);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-chip: 999px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --glow-accent: 0 0 12px rgba(0, 230, 168, 0.25);
            --font-main: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --space-section-desk: 80px;
            --space-section-tab: 64px;
            --space-section-mob: 48px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 44px 44px;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

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

        button,
        input {
            font-family: var(--font-main);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: var(--space-section-desk) 0;
            position: relative;
            z-index: 1;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 36px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin: 0;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 8px;
        }

        .section-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: color 0.3s, transform 0.3s;
        }

        .section-more:hover {
            color: var(--accent);
            transform: translateX(4px);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-weight: 800;
            font-size: 15px;
            line-height: 1;
            padding: 14px 28px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #0A0E17;
            border-color: var(--accent);
        }

        .btn-primary:hover {
            background: #00c495;
            color: #0A0E17;
            box-shadow: 0 0 20px rgba(0, 230, 168, 0.35);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-ghost {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.4);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #fff;
            color: #fff;
        }

        .btn-light {
            background: #fff;
            color: #0A0E17;
            border-color: #fff;
        }

        .btn-light:hover {
            background: #e0e0e0;
            color: #0A0E17;
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 13px;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Chips ===== */
        .chip {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 5px 14px;
            border-radius: var(--radius-chip);
            font-size: 12px;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .chip-active {
            background: var(--accent) !important;
            color: #0A0E17 !important;
            border-color: var(--accent) !important;
            box-shadow: var(--glow-accent);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.8);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.4s ease, box-shadow 0.4s ease;
        }

        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.95);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 16px 20px;
            max-width: 1200px;
            margin: 0 auto;
            min-height: 72px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            text-decoration: none;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent), var(--accent-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0A0E17;
            font-size: 16px;
            font-weight: 900;
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 19px;
            font-weight: 900;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            text-decoration: none;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-chip:hover {
            color: var(--accent);
            border-color: var(--border-subtle);
            background: rgba(0, 230, 168, 0.04);
        }

        .nav-chip.active {
            background: var(--accent);
            color: #0A0E17;
            border-color: var(--accent);
            box-shadow: var(--glow-accent);
        }

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

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 0 80px;
            overflow: hidden;
            isolation: isolate;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: -2;
            background-size: cover;
            background-position: center;
            background-color: #0A0E17;
        }

        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 23, 0.92) 0%, rgba(10, 14, 23, 0.75) 45%, rgba(10, 14, 23, 0.5) 70%, rgba(10, 14, 23, 0.85) 100%);
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .hero-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 230, 168, 0.12);
            border: 1px solid var(--border-subtle);
            color: var(--accent);
            padding: 8px 20px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 28px;
            backdrop-filter: blur(8px);
        }

        .hero-title {
            font-size: 52px;
            font-weight: 900;
            line-height: 1.2;
            color: #fff;
            margin: 0 auto 18px;
            letter-spacing: 0.01em;
        }

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

        .hero-title .highlight::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(0, 230, 168, 0.5);
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
            margin: 0 auto 36px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-divider {
            width: 48px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin: 0 auto 28px;
            box-shadow: 0 0 16px rgba(0, 230, 168, 0.4);
        }

        .hero-scroll {
            position: absolute;
            bottom: 36px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            color: var(--text-muted);
            font-size: 22px;
            animation: floatDown 2s ease-in-out infinite;
        }

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

        /* ===== Brand Statement ===== */
        .brand-statement {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 48px 0;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .brand-statement p {
            font-size: 28px;
            font-weight: 900;
            color: #fff;
            line-height: 1.4;
            max-width: 900px;
            margin: 0 auto;
            letter-spacing: 0.01em;
        }

        .brand-statement p span {
            color: var(--accent);
        }

        /* ===== About / Brand Story ===== */
        .about-section {
            background: var(--bg-primary);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-image {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 4/3;
            background: linear-gradient(135deg, #1a2436, var(--bg-card));
            border: 1px solid var(--border-subtle);
        }

        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .about-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, transparent 60%, rgba(0, 230, 168, 0.08));
            pointer-events: none;
        }

        .about-content .section-title {
            margin-bottom: 20px;
        }

        .about-content>p {
            color: var(--text-secondary);
            margin-bottom: 16px;
            font-size: 15px;
            line-height: 1.9;
        }

        .about-points {
            display: grid;
            gap: 18px;
            margin-top: 28px;
        }

        .point-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .point-icon {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            border-radius: 10px;
            background: rgba(0, 230, 168, 0.1);
            border: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 16px;
        }

        .point-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .point-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Featured Cards ===== */
        .featured-section {
            background: var(--bg-panel);
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .content-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.05);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .content-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-strong);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
        }

        .card-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: linear-gradient(135deg, #1a2436, #0D1420);
        }

        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 700;
            background: var(--accent-purple);
            color: #fff;
            letter-spacing: 0.03em;
        }

        .card-badge.green {
            background: var(--accent);
            color: #0A0E17;
        }

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

        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin-bottom: 14px;
        }

        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .card-date {
            font-size: 12px;
            color: var(--text-muted);
            font-variant-numeric: tabular-nums;
        }

        .card-link {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.3s, transform 0.3s;
        }

        .content-card:hover .card-link {
            color: var(--accent);
            transform: translateX(4px);
        }

        /* ===== News List ===== */
        .news-section {
            background: var(--bg-primary);
        }

        .news-list {
            display: grid;
            gap: 14px;
        }

        .news-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            transition: all 0.3s ease;
            text-decoration: none;
        }

        .news-list-item:hover {
            border-color: var(--border-subtle);
            background: #162033;
            transform: translateX(4px);
        }

        .news-thumb {
            width: 96px;
            height: 96px;
            flex-shrink: 0;
            border-radius: 8px;
            overflow: hidden;
            background: linear-gradient(135deg, #1a2436, var(--bg-card));
        }

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

        .news-content {
            flex: 1;
            min-width: 0;
        }

        .news-content h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 8px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .news-meta .chip {
            padding: 2px 10px;
            font-size: 11px;
            background: rgba(139, 92, 246, 0.15);
            border-color: rgba(139, 92, 246, 0.25);
            color: #b39dff;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            font-variant-numeric: tabular-nums;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-arrow {
            font-size: 18px;
            color: var(--text-muted);
            transition: color 0.3s, transform 0.3s;
            flex-shrink: 0;
        }

        .news-list-item:hover .news-arrow {
            color: var(--accent);
            transform: translateX(4px);
        }

        .news-empty {
            border: 2px dashed rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 48px 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 15px;
            background: rgba(255, 255, 255, 0.02);
        }

        /* ===== Trust Section ===== */
        .trust-section {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .trust-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 40px;
            text-align: center;
        }

        .stat-item {
            padding: 20px 0;
        }

        .stat-num {
            font-size: 44px;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 8px;
        }

        .trust-badges {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 32px;
        }

        .badge-item {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            padding: 12px 22px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
        }

        .badge-item i {
            color: var(--accent-gold);
            font-size: 18px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-primary);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color 0.3s;
        }

        .faq-item.active {
            border-color: var(--border-subtle);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            min-height: 56px;
            transition: background 0.3s;
        }

        .faq-question:hover {
            background: rgba(0, 230, 168, 0.04);
        }

        .faq-q-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--accent);
            color: #0A0E17;
            font-size: 13px;
            font-weight: 900;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-question h4 {
            flex: 1;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 0;
        }

        .faq-arrow {
            color: var(--text-muted);
            transition: transform 0.3s, color 0.3s;
            font-size: 14px;
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            padding: 0 20px 18px 64px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
            animation: fadeIn 0.3s ease;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-primary), var(--bg-panel));
            padding: 80px 0;
            position: relative;
            z-index: 1;
        }

        .cta-box {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
            border-top: 2px solid var(--accent);
            background: linear-gradient(160deg, rgba(17, 24, 39, 0.95), rgba(10, 14, 23, 0.98));
            border-radius: 16px;
            padding: 56px 48px;
            box-shadow: var(--shadow-card);
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 520px;
            margin: 0 auto;
        }

        .cta-form input[type="email"] {
            flex: 1;
            height: 44px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(255, 255, 255, 0.05);
            padding: 0 16px;
            font-size: 14px;
            color: #fff;
            outline: none;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .cta-form input[type="email"]::placeholder {
            color: var(--text-muted);
        }

        .cta-form input[type="email"]:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(0, 230, 168, 0.2);
        }

        .cta-form .btn {
            height: 44px;
        }

        .cta-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 40px;
            padding: 56px 0 40px;
        }

        .footer-brand .brand {
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }

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

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.3s;
        }

        .footer-social a:hover {
            color: var(--accent);
            border-color: var(--border-subtle);
            background: rgba(0, 230, 168, 0.06);
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
            display: grid;
            gap: 10px;
            margin: 0;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color 0.3s, padding-left 0.3s;
        }

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

        .footer-safety {
            background: rgba(255, 197, 61, 0.06);
            border: 1px solid rgba(255, 197, 61, 0.15);
            border-radius: 10px;
            padding: 20px;
        }

        .footer-safety .safety-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 14px;
        }

        .footer-safety p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 20px 0;
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            display: flex;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--space-section-mob) 0;
            }

            .section-title {
                font-size: 24px;
            }

            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
                padding: 14px 20px;
            }

            .main-nav {
                order: 3;
                flex: 0 0 100%;
                justify-content: flex-start;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding: 4px 0 0;
            }

            .nav-chip {
                flex-shrink: 0;
            }

            .hero {
                min-height: 70vh;
                padding: 110px 0 60px;
            }

            .hero-title {
                font-size: 32px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

            .about-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .content-grid {
                grid-template-columns: 1fr;
            }

            .news-list-item {
                flex-direction: column;
                align-items: flex-start;
            }

            .news-thumb {
                width: 100%;
                height: 160px;
            }

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

            .stat-num {
                font-size: 34px;
            }

            .trust-badges {
                gap: 12px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-box {
                padding: 40px 20px;
            }

            .cta-form {
                flex-direction: column;
            }

            .cta-form .btn {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 16px;
            }

            .header-actions .btn-sm {
                padding: 8px 14px;
                font-size: 12px;
            }

            .hero-title {
                font-size: 26px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .brand-statement p {
                font-size: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .trust-stats {
                grid-template-columns: 1fr 1fr;
            }
        }

/* roulang page: article */
:root {
            --bg-main: #0A0E17;
            --bg-panel: #111827;
            --bg-card: #131C2E;
            --bg-footer: #0D1220;
            --color-primary: #00E6A8;
            --color-accent: #8B5CF6;
            --color-gold: #FFC53D;
            --text-white: #FFFFFF;
            --text-main: #E5E9F0;
            --text-weak: #8A94A6;
            --border-primary: rgba(0, 230, 168, 0.15);
            --border-strong: rgba(0, 230, 168, 0.35);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --transition: all 0.3s ease;
            --font-stack: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-main);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 60px 60px;
        }

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

        a:hover {
            color: #4AE6C0;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-weight: 800;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
            background: transparent;
            color: var(--text-white);
            text-decoration: none;
        }

        .btn i {
            font-size: 14px;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #0A0E17;
        }

        .btn-primary:hover {
            background: #32F0BC;
            color: #0A0E17;
            box-shadow: 0 0 18px rgba(0, 230, 168, 0.35);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-white);
        }

        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(0, 230, 168, 0.08);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #A0AAB8;
            transition: var(--transition);
            cursor: pointer;
        }

        .chip-active {
            background: var(--color-primary);
            border-color: transparent;
            color: #0A0E17;
            font-weight: 700;
            box-shadow: 0 0 12px rgba(0, 230, 168, 0.25);
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(139, 92, 246, 0.2);
            color: #B7A6F5;
        }

        .section-title-wrap {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 32px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.3;
            position: relative;
            padding-bottom: 12px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 4px;
            background: var(--color-primary);
            box-shadow: 0 0 12px rgba(0, 230, 168, 0.3);
            border-radius: 2px;
        }

        .section-sub {
            color: var(--text-weak);
            font-size: 14px;
            margin-top: 8px;
        }

        .section-link {
            color: var(--text-weak);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .section-link:hover {
            color: var(--color-primary);
            gap: 10px;
        }

        /* ---------- Header Nav ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.9);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: background 0.4s ease;
        }

        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            text-decoration: none;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), #00B889);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0A0E17;
            font-size: 16px;
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #A0AAB8;
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-chip:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
        }

        .nav-chip.active {
            background: var(--color-primary);
            border-color: transparent;
            color: #0A0E17;
            font-weight: 700;
            box-shadow: 0 0 12px rgba(0, 230, 168, 0.25);
        }

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

        /* ---------- Breadcrumb ---------- */
        .breadcrumb-bar {
            margin-top: 68px;
            padding: 16px 0;
            background: #0F1520;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

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

        .breadcrumb a {
            color: var(--text-weak);
            transition: var(--transition);
        }

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

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.25);
            font-size: 11px;
        }

        .breadcrumb .current {
            color: #B8C0CC;
            max-width: 400px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ---------- Article Header ---------- */
        .article-header {
            padding: 64px 0 40px;
            text-align: center;
            position: relative;
            background:
                linear-gradient(rgba(10, 14, 23, 0.88), rgba(10, 14, 23, 0.95)),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .article-header-inner {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 18px;
            flex-wrap: wrap;
            margin-bottom: 20px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .meta-item i {
            color: var(--color-primary);
            font-size: 14px;
        }

        .article-header h1 {
            font-size: 42px;
            font-weight: 900;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }

        .article-header .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(139, 92, 246, 0.15);
            border: 1px solid rgba(139, 92, 246, 0.3);
            color: #C4B5FD;
            font-size: 13px;
            font-weight: 500;
        }

        /* ---------- Article Body ---------- */
        .article-main {
            padding: 48px 0 24px;
        }

        .article-content {
            max-width: 760px;
            margin: 0 auto;
            padding: 0 20px;
            font-size: 16px;
            line-height: 1.9;
            color: #CFD6E2;
        }

        .article-content p {
            margin-bottom: 24px;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-white);
            margin: 40px 0 20px;
            padding-left: 16px;
            border-left: 4px solid var(--color-primary);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-white);
            margin: 32px 0 16px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--color-primary);
            background: rgba(0, 230, 168, 0.06);
            padding: 20px 24px;
            border-radius: 8px;
            margin: 28px 0;
            color: #A8B4C4;
            font-style: normal;
        }

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

        .article-content img {
            border-radius: 12px;
            margin: 28px auto;
            max-width: 100%;
            height: auto;
        }

        .article-content ul,
        .article-content ol {
            margin: 20px 0;
            padding-left: 20px;
        }

        .article-content li {
            margin-bottom: 12px;
            line-height: 1.8;
        }

        .article-content ul li {
            position: relative;
        }

        .article-content ol li {
            color: var(--color-primary);
            font-weight: 700;
        }

        .article-content ol li span,
        .article-content ol li p {
            color: #CFD6E2;
            font-weight: 400;
        }

        .article-content a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: #4AE6C0;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: 8px;
            overflow: hidden;
        }

        .article-content table th,
        .article-content table td {
            padding: 12px 16px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            text-align: left;
        }

        .article-content table th {
            background: rgba(0, 230, 168, 0.1);
            color: var(--text-white);
            font-weight: 700;
        }

        /* Empty State */
        .article-empty {
            max-width: 560px;
            margin: 40px auto;
            padding: 60px 40px;
            text-align: center;
            background: var(--bg-card);
            border: 2px dashed rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
        }

        .article-empty i {
            font-size: 48px;
            color: var(--text-weak);
            margin-bottom: 16px;
            opacity: 0.5;
        }

        .article-empty h2 {
            font-size: 24px;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .article-empty p {
            color: var(--text-weak);
            margin-bottom: 24px;
            font-size: 14px;
        }

        /* ---------- Copyright ---------- */
        .article-copyright {
            max-width: 760px;
            margin: 32px auto 0;
            padding: 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 12px;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .article-copyright i {
            color: var(--color-gold);
        }

        /* ---------- Article Pager ---------- */
        .article-pager {
            max-width: 760px;
            margin: 32px auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .pager-link {
            display: block;
            padding: 18px 20px;
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
            text-decoration: none;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.02);
        }

        .pager-link:hover {
            border-color: var(--color-primary);
            background: rgba(0, 230, 168, 0.05);
        }

        .pager-link.next {
            text-align: right;
        }

        .pager-label {
            font-size: 12px;
            color: var(--text-weak);
            display: block;
            margin-bottom: 6px;
        }

        .pager-title {
            font-size: 14px;
            color: var(--text-main);
            font-weight: 600;
            line-height: 1.5;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
        }

        .pager-link:hover .pager-title {
            color: var(--color-primary);
        }

        /* ---------- Related Articles ---------- */
        .related-section {
            padding: 64px 0;
            background: var(--bg-panel);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .card-item {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.04);
            transition: var(--transition);
            text-decoration: none;
            color: var(--text-main);
            display: flex;
            flex-direction: column;
            height: 100%;
            box-shadow: var(--shadow-card);
        }

        .card-item:hover {
            transform: translateY(-6px);
            border-color: var(--border-primary);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(0, 230, 168, 0.1);
        }

        .card-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: linear-gradient(135deg, #1a2440, #131C2E);
        }

        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 700;
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

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

        .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .card-desc {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 12px;
            color: var(--text-weak);
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--text-weak);
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
        }

        .card-link i {
            transition: transform 0.3s ease;
        }

        .card-item:hover .card-link {
            color: var(--color-primary);
        }

        .card-item:hover .card-link i {
            transform: translateX(4px);
        }

        /* ---------- CTA Subscribe ---------- */
        .cta-subscribe {
            padding: 72px 0;
            background: linear-gradient(135deg, rgba(0, 230, 168, 0.06), rgba(139, 92, 246, 0.08));
            border-top: 1px solid var(--border-primary);
        }

        .cta-inner {
            max-width: 640px;
            margin: 0 auto;
            text-align: center;
            padding: 0 20px;
        }

        .cta-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .cta-desc {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 32px;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto 14px;
        }

        .cta-form input[type="email"] {
            flex: 1;
            height: 48px;
            padding: 0 16px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(10, 14, 23, 0.8);
            color: var(--text-white);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
            font-family: var(--font-stack);
        }

        .cta-form input[type="email"]::placeholder {
            color: #6B7280;
        }

        .cta-form input[type="email"]:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 2px rgba(0, 230, 168, 0.15);
        }

        .cta-form .btn {
            height: 48px;
            padding: 0 28px;
        }

        .cta-note {
            font-size: 12px;
            color: var(--text-weak);
            opacity: 0.7;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .brand {
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.8;
            margin-bottom: 20px;
        }

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

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-weak);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: rgba(0, 230, 168, 0.06);
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
        }

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

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: var(--text-weak);
            font-size: 13px;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .footer-safety {
            background: rgba(0, 230, 168, 0.04);
            border: 1px solid rgba(0, 230, 168, 0.08);
            border-radius: var(--radius-card);
            padding: 16px 18px;
        }

        .safety-header {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-gold);
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .safety-header i {
            font-size: 16px;
        }

        .footer-safety p {
            font-size: 12px;
            color: var(--text-weak);
            line-height: 1.7;
            margin: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: var(--text-weak);
            background: #1A2230;
            margin-top: 0;
        }

        .footer-bottom span {
            opacity: 0.8;
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 900px) {
            .main-nav {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 4px;
                scrollbar-width: none;
            }
            .main-nav::-webkit-scrollbar {
                display: none;
            }
            .header-inner {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 20px;
                gap: 8px;
            }
            .main-nav {
                order: 3;
                width: 100%;
                gap: 6px;
            }
            .nav-chip {
                padding: 6px 16px;
                font-size: 12px;
                flex-shrink: 0;
            }
            .breadcrumb-bar {
                margin-top: 108px;
            }
            .article-header h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-pager {
                grid-template-columns: 1fr;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-header {
                padding: 48px 0 32px;
            }
            .article-header h1 {
                font-size: 28px;
            }
            .article-meta {
                gap: 12px;
                font-size: 12px;
            }
            .section-title {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 10px 14px;
            }
            .brand-text {
                font-size: 15px;
            }
            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .header-actions .btn-sm {
                padding: 7px 14px;
                font-size: 12px;
            }
            .article-header h1 {
                font-size: 24px;
            }
            .article-content {
                font-size: 15px;
                line-height: 1.85;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
        --bg-primary: #0A0E17;
        --bg-panel: #111827;
        --bg-card: #131C2E;
        --bg-card-hover: #172236;
        --accent: #00E6A8;
        --accent-secondary: #8B5CF6;
        --gold: #FFC53D;
        --text-primary: #F0F4F8;
        --text-secondary: #8A94A6;
        --text-muted: #6B7280;
        --border-accent: rgba(0, 230, 168, 0.15);
        --border-accent-strong: rgba(0, 230, 168, 0.35);
        --border-white: rgba(255, 255, 255, 0.08);
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-chip: 999px;
        --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
        --font-main: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        --transition: 300ms ease;
    }

    *, *::before, *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html { scroll-behavior: smooth; }
    body {
        font-family: var(--font-main);
        background: var(--bg-primary);
        background-image:
            linear-gradient(rgba(0, 230, 168, 0.025) 1px, transparent 1px),
            linear-gradient(90deg, rgba(0, 230, 168, 0.025) 1px, transparent 1px);
        background-size: 64px 64px;
        color: var(--text-primary);
        line-height: 1.8;
        font-size: 16px;
        overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: color 300ms ease; }
    ul, ol { list-style: none; }
    button, input { font-family: inherit; font-size: inherit; background: none; border: none; color: inherit; }
    button { cursor: pointer; }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
        width: 100%;
    }

    /* ========== Header ========== */
    .site-header {
        position: fixed;
        top: 0; left: 0; right: 0;
        z-index: 1000;
        background: rgba(10, 14, 23, 0.82);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--border-white);
        transition: background 300ms ease, box-shadow 300ms ease;
    }
    .site-header.scrolled {
        background: rgba(10, 14, 23, 0.95);
        box-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        max-width: 1320px;
        margin: 0 auto;
        padding: 14px 20px;
    }
    .brand {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .brand-icon {
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
        border-radius: 10px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: #0A0E17;
        font-size: 16px;
        flex-shrink: 0;
    }
    .brand-text {
        font-weight: 900;
        font-size: 18px;
        letter-spacing: 0.02em;
        color: var(--text-primary);
        white-space: nowrap;
    }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: none;
    }
    .main-nav::-webkit-scrollbar { display: none; }
    .nav-chip {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 8px 18px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-chip);
        color: #A0AAB8;
        font-size: 14px;
        font-weight: 500;
        white-space: nowrap;
        transition: all 300ms ease;
    }
    .nav-chip:hover {
        background: rgba(255, 255, 255, 0.1);
        color: #fff;
        transform: translateY(-1px);
    }
    .nav-chip.active {
        background: var(--accent);
        color: #0A0E17;
        border-color: transparent;
        box-shadow: 0 0 12px rgba(0, 230, 168, 0.25);
        font-weight: 700;
    }
    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 24px;
        border-radius: var(--radius-btn);
        font-weight: 700;
        font-size: 15px;
        line-height: 1;
        cursor: pointer;
        border: 1px solid transparent;
        transition: all 300ms ease;
    }
    .btn-sm { padding: 10px 18px; font-size: 14px; }
    .btn-primary {
        background: var(--accent);
        color: #0A0E17;
    }
    .btn-primary:hover {
        background: #2bf0bc;
        box-shadow: 0 0 16px rgba(0, 230, 168, 0.3);
        transform: translateY(-2px);
    }
    .btn-outline {
        background: transparent;
        border-color: rgba(255, 255, 255, 0.5);
        color: #fff;
    }
    .btn-outline:hover {
        border-color: #fff;
        background: rgba(255, 255, 255, 0.08);
        transform: translateY(-2px);
    }
    .btn-light {
        background: #fff;
        color: #0A0E17;
    }
    .btn-light:hover {
        background: #eef2f7;
        box-shadow: 0 0 14px rgba(255, 255, 255, 0.2);
        transform: translateY(-2px);
    }

    /* ========== Page Hero ========== */
    .page-hero {
        position: relative;
        min-height: 230px;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        padding: 130px 20px 56px;
        background: linear-gradient(rgba(10, 14, 23, 0.72), rgba(10, 14, 23, 0.92)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
        background-color: var(--bg-panel);
        border-bottom: 1px solid var(--border-accent);
    }
    .page-hero h1 {
        font-size: 40px;
        font-weight: 900;
        line-height: 1.25;
        color: #fff;
        letter-spacing: 0.02em;
    }
    .page-hero h1 span { color: var(--accent); }
    .page-hero p {
        color: var(--text-secondary);
        font-size: 15px;
        margin-top: 14px;
        max-width: 680px;
        margin-left: auto;
        margin-right: auto;
        line-height: 1.8;
    }

    /* ========== Section ========== */
    .section-heading {
        text-align: center;
        max-width: 720px;
        margin: 0 auto 44px;
    }
    .section-heading .section-label {
        display: inline-block;
        background: rgba(139, 92, 246, 0.14);
        color: var(--accent-secondary);
        font-size: 13px;
        font-weight: 700;
        padding: 5px 14px;
        border-radius: var(--radius-chip);
        letter-spacing: 0.06em;
        margin-bottom: 12px;
        border: 1px solid rgba(139, 92, 246, 0.25);
    }
    .section-heading h2 {
        font-size: 30px;
        font-weight: 800;
        line-height: 1.3;
        color: #fff;
    }
    .section-heading p {
        color: var(--text-secondary);
        font-size: 14px;
        margin-top: 10px;
    }

    /* ========== Overview ========== */
    .overview-section {
        padding: 80px 0 40px;
    }
    .overview-visual {
        border-radius: var(--radius-card);
        overflow: hidden;
        background: linear-gradient(135deg, var(--bg-card), #1A2440);
        border: 1px solid var(--border-white);
        min-height: 300px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .overview-visual img {
        width: 100%;
        height: 340px;
        object-fit: cover;
    }
    .overview-content h2 {
        font-size: 28px;
        font-weight: 800;
        line-height: 1.35;
        color: #fff;
        margin-bottom: 16px;
    }
    .overview-content > p {
        color: var(--text-secondary);
        font-size: 15px;
        margin-bottom: 24px;
        line-height: 1.8;
    }
    .feature-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .feature-item {
        display: flex;
        gap: 14px;
        align-items: flex-start;
        background: var(--bg-card);
        border: 1px solid var(--border-white);
        border-radius: var(--radius-card);
        padding: 20px;
        transition: all 300ms ease;
    }
    .feature-item:hover {
        border-color: var(--border-accent);
        transform: translateY(-4px);
        background: var(--bg-card-hover);
    }
    .feature-icon {
        width: 40px;
        height: 40px;
        flex-shrink: 0;
        border-radius: 8px;
        background: rgba(0, 230, 168, 0.1);
        border: 1px solid var(--border-accent);
        color: var(--accent);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
    }
    .feature-item h4 {
        font-size: 15px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 4px;
    }
    .feature-item p {
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.6;
    }

    /* ========== Zigzag ========== */
    .zigzag-section {
        padding: 40px 0 60px;
    }
    .zigzag-item {
        margin-bottom: 64px;
    }
    .zigzag-item:last-child { margin-bottom: 0; }
    .zigzag-media {
        border-radius: var(--radius-card);
        overflow: hidden;
        background: linear-gradient(135deg, var(--bg-card), #1A2440);
        border: 1px solid var(--border-white);
        min-height: 260px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .zigzag-media img {
        width: 100%;
        height: 320px;
        object-fit: cover;
    }
    .zigzag-content { padding: 10px 24px; }
    .zigzag-tag {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
        color: #0A0E17;
        font-weight: 900;
        font-size: 16px;
        border-radius: 10px;
        margin-bottom: 16px;
    }
    .zigzag-content h3 {
        font-size: 22px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 12px;
        line-height: 1.4;
    }
    .zigzag-content > p {
        color: var(--text-secondary);
        font-size: 14px;
        line-height: 1.8;
        margin-bottom: 20px;
    }
    .feature-check-list {
        display: grid;
        gap: 10px;
    }
    .feature-check-list li {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 14px;
        color: var(--text-primary);
    }
    .feature-check-list li i {
        color: var(--accent);
        font-size: 14px;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        background: rgba(0, 230, 168, 0.1);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    /* ========== Jump Cards ========== */
    .jump-section {
        padding: 40px 0;
        background: linear-gradient(180deg, transparent, rgba(17, 24, 39, 0.6) 20%, rgba(17, 24, 39, 0.6) 80%, transparent), var(--bg-primary);
        border-top: 1px solid var(--border-white);
        border-bottom: 1px solid var(--border-white);
    }
    .jump-card {
        position: relative;
        display: flex;
        flex-direction: column;
        background: var(--bg-card);
        border: 1px solid var(--border-white);
        border-radius: var(--radius-card);
        padding: 32px 28px;
        min-height: 220px;
        transition: all 300ms ease;
        overflow: hidden;
    }
    .jump-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--accent), transparent);
        opacity: 0.4;
    }
    .jump-card:hover {
        transform: translateY(-6px);
        border-color: var(--border-accent);
        background: var(--bg-card-hover);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    }
    .jump-icon {
        width: 48px;
        height: 48px;
        border-radius: 12px;
        background: rgba(139, 92, 246, 0.15);
        border: 1px solid rgba(139, 92, 246, 0.3);
        color: var(--accent-secondary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        margin-bottom: 18px;
    }
    .jump-card h3 {
        font-size: 19px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 8px;
    }
    .jump-card p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        flex: 1;
    }
    .jump-arrow {
        margin-top: 18px;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 14px;
        font-weight: 700;
        color: var(--accent);
        transition: gap 300ms ease;
    }
    .jump-card:hover .jump-arrow { gap: 12px; }

    /* ========== Process ========== */
    .process-section {
        padding: 80px 0 60px;
        position: relative;
    }
    .process-step {
        background: var(--bg-card);
        border: 1px solid var(--border-white);
        border-radius: var(--radius-card);
        padding: 28px 22px;
        text-align: center;
        transition: all 300ms ease;
        margin-bottom: 16px;
    }
    .process-step:hover {
        border-color: var(--border-accent);
        transform: translateY(-6px);
        box-shadow: var(--shadow-card);
    }
    .step-num {
        width: 52px;
        height: 52px;
        margin: 0 auto 16px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
        color: #0A0E17;
        font-size: 18px;
        font-weight: 900;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .process-step h3 {
        font-size: 17px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 8px;
    }
    .process-step p {
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.7;
    }

    /* ========== FAQ ========== */
    .faq-section {
        padding: 60px 0 80px;
    }
    .faq-list {
        max-width: 860px;
        margin: 0 auto;
    }
    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border-white);
        border-radius: var(--radius-card);
        margin-bottom: 12px;
        transition: border-color 300ms ease;
    }
    .faq-item.open {
        border-color: var(--border-accent);
    }
    .faq-question {
        display: flex;
        align-items: center;
        gap: 14px;
        width: 100%;
        padding: 18px 22px;
        text-align: left;
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        line-height: 1.5;
    }
    .faq-question:hover {
        background: rgba(0, 230, 168, 0.04);
    }
    .faq-q-icon {
        width: 28px;
        height: 28px;
        flex-shrink: 0;
        border-radius: 50%;
        background: var(--accent);
        color: #0A0E17;
        font-size: 13px;
        font-weight: 900;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .faq-arrow {
        margin-left: auto;
        color: var(--text-secondary);
        font-size: 14px;
        transition: transform 300ms ease, color 300ms ease;
        flex-shrink: 0;
    }
    .faq-item.open .faq-arrow {
        transform: rotate(180deg);
        color: var(--accent);
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 400ms ease;
    }
    .faq-item.open .faq-answer {
        max-height: 500px;
    }
    .faq-answer p {
        padding: 0 22px 20px 64px;
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.8;
    }

    /* ========== CTA ========== */
    .cta-section {
        padding: 30px 0 70px;
    }
    .cta-banner {
        background: linear-gradient(135deg, rgba(17, 24, 39, 0.95), rgba(19, 28, 46, 0.9)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
        border: 1px solid var(--border-accent-strong);
        border-top: 3px solid var(--accent);
        border-radius: 16px;
        padding: 56px 40px;
        text-align: center;
    }
    .cta-banner h2 {
        font-size: 28px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 10px;
    }
    .cta-banner > p {
        color: var(--text-secondary);
        font-size: 14px;
        margin-bottom: 28px;
    }
    .cta-form {
        display: flex;
        max-width: 480px;
        margin: 0 auto;
        gap: 10px;
    }
    .cta-form input {
        flex: 1;
        height: 48px;
        background: rgba(10, 14, 23, 0.75);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: var(--radius-btn);
        padding: 0 18px;
        color: #fff;
        font-size: 14px;
        transition: border-color 300ms ease, box-shadow 300ms ease;
    }
    .cta-form input::placeholder {
        color: #8A94A6;
    }
    .cta-form input:focus {
        outline: none;
        border-color: var(--accent);
        box-shadow: 0 0 0 2px rgba(0, 230, 168, 0.15);
    }
    .cta-note {
        display: block;
        margin-top: 16px;
        font-size: 12px;
        color: var(--text-muted);
    }

    /* ========== Related ========== */
    .related-section {
        padding: 0 0 80px;
    }
    .related-section h3 {
        text-align: center;
        font-size: 20px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 22px;
    }
    .related-chips {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }
    .related-chip {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 22px;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-chip);
        color: #A0AAB8;
        font-size: 14px;
        font-weight: 500;
        transition: all 300ms ease;
    }
    .related-chip:hover {
        background: rgba(0, 230, 168, 0.1);
        border-color: var(--border-accent);
        color: var(--accent);
        transform: translateY(-2px);
    }
    .related-chip i { color: var(--accent-secondary); }

    /* ========== Footer ========== */
    .site-footer {
        background: #0C1119;
        border-top: 1px solid var(--border-white);
        padding-top: 56px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 0.8fr 0.8fr 1.2fr;
        gap: 40px;
        padding-bottom: 40px;
    }
    .footer-brand .brand { margin-bottom: 12px; }
    .footer-desc {
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.8;
        margin-bottom: 16px;
        max-width: 320px;
    }
    .footer-social {
        display: flex;
        gap: 10px;
    }
    .footer-social a {
        width: 34px;
        height: 34px;
        border-radius: 8px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-secondary);
        font-size: 14px;
        transition: all 300ms ease;
    }
    .footer-social a:hover {
        background: rgba(0, 230, 168, 0.12);
        border-color: var(--border-accent);
        color: var(--accent);
    }
    .footer-title {
        font-size: 15px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 16px;
        letter-spacing: 0.03em;
    }
    .footer-links li { margin-bottom: 10px; }
    .footer-links a {
        font-size: 13px;
        color: var(--text-secondary);
        transition: color 300ms ease;
    }
    .footer-links a:hover {
        color: var(--accent);
    }
    .footer-safety {
        background: rgba(255, 195, 61, 0.05);
        border: 1px solid rgba(255, 195, 61, 0.15);
        border-radius: 10px;
        padding: 16px;
    }
    .safety-header {
        display: flex;
        align-items: center;
        gap: 8px;
        color: var(--gold);
        font-size: 13px;
        font-weight: 700;
        margin-bottom: 8px;
    }
    .footer-safety p {
        font-size: 12px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin: 0;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding: 18px 20px;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        gap: 18px;
        background: #0A0E17;
        font-size: 12px;
        color: var(--text-muted);
    }

    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
        .header-inner {
            flex-wrap: wrap;
            gap: 12px;
        }
        .main-nav {
            order: 3;
            width: 100%;
        }
        .header-actions {
            margin-left: auto;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .process-step { text-align: left; }
        .step-num { margin: 0 0 12px; }
    }

    @media (max-width: 768px) {
        .page-hero { min-height: 220px; padding: 110px 20px 40px; }
        .page-hero h1 { font-size: 30px; }
        .page-hero p { font-size: 14px; }
        .overview-section { padding: 48px 0 24px; }
        .feature-grid { grid-template-columns: 1fr; }
        .zigzag-section { padding: 24px 0 40px; }
        .zigzag-item { margin-bottom: 40px; }
        .zigzag-media img { height: 240px; }
        .zigzag-content { padding: 10px 4px; }
        .process-section { padding: 48px 0 36px; }
        .faq-section { padding: 40px 0 48px; }
        .cta-banner { padding: 40px 22px; }
        .cta-banner h2 { font-size: 22px; }
        .cta-form { flex-direction: column; }
        .cta-form input, .cta-form .btn { width: 100%; }
        .footer-grid { grid-template-columns: 1fr; gap: 28px; }
        .related-section { padding-bottom: 48px; }
        .section-heading h2 { font-size: 24px; }
    }

    @media (max-width: 520px) {
        .brand-text { font-size: 15px; }
        .header-inner { padding: 12px 14px; }
        .header-actions .btn-sm { padding: 9px 12px; font-size: 13px; }
        .page-hero h1 { font-size: 26px; }
        .jump-card { padding: 24px 18px; }
        .footer-bottom { flex-direction: column; gap: 6px; text-align: center; }
    }

/* roulang page: category3 */
:root {
            --bg-primary: #0A0E17;
            --bg-panel: #111827;
            --bg-card: #131C2E;
            --primary: #00E6A8;
            --secondary: #8B5CF6;
            --accent: #FFC53D;
            --text-primary: #F0F4F8;
            --text-secondary: #A0AAB8;
            --text-muted: #8A94A6;
            --border-primary: rgba(0, 230, 168, 0.15);
            --border-strong: rgba(0, 230, 168, 0.35);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --header-height: 72px;
            --section-space: 80px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            background-image: linear-gradient(rgba(0, 230, 168, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 230, 168, 0.03) 1px, transparent 1px);
            background-size: 60px 60px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        a:hover {
            color: var(--primary);
            opacity: 0.9;
        }

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

        ul,
        ol {
            list-style: none;
        }

        input,
        button {
            font-family: inherit;
        }

        i {
            font-style: normal;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.95);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--header-height);
            gap: 20px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 160px;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary);
            color: #0A0E17;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 0 14px rgba(0, 230, 168, 0.25);
        }

        .brand-text {
            font-size: 17px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            white-space: nowrap;
            transition: all 0.3s ease;
        }

        .nav-chip:hover {
            color: var(--text-primary);
            border-color: var(--border-primary);
            background: rgba(255, 255, 255, 0.09);
        }

        .nav-chip.active {
            background: var(--primary);
            color: #0A0E17;
            border-color: transparent;
            font-weight: 700;
            box-shadow: 0 0 12px rgba(0, 230, 168, 0.25);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 14px;
            padding: 12px 26px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-primary {
            background: var(--primary);
            color: #0A0E17;
        }

        .btn-primary:hover {
            opacity: 0.95;
            color: #0A0E17;
            box-shadow: 0 0 20px rgba(0, 230, 168, 0.3);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.4);
            color: var(--text-primary);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 9px 20px;
            font-size: 13px;
        }

        /* ===== 页头横幅 ===== */
        .page-banner {
            position: relative;
            padding: 140px 0 60px;
            min-height: 220px;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border-primary);
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 23, 0.92) 0%, rgba(10, 14, 23, 0.78) 50%, rgba(10, 14, 23, 0.65) 100%);
            z-index: 1;
        }

        .banner-inner {
            position: relative;
            z-index: 2;
        }

        .banner-inner h1 {
            font-size: 38px;
            font-weight: 900;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .banner-inner h1::after {
            content: "";
            display: block;
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin-top: 16px;
            box-shadow: 0 0 8px rgba(0, 230, 168, 0.4);
        }

        .banner-inner p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
            margin-top: 12px;
        }

        /* ===== 主区块 ===== */
        main {
            padding: 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(0, 230, 168, 0.08);
            border: 1px solid var(--border-primary);
            border-radius: 999px;
            padding: 5px 14px;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        /* ===== Z字形图文 ===== */
        .zigzag-section {
            padding: var(--section-space) 0;
        }

        .zigzag-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            margin-bottom: 80px;
        }

        .zigzag-item:last-child {
            margin-bottom: 0;
        }

        .zigzag-item.reverse .zigzag-image {
            order: 2;
        }

        .zigzag-item.reverse .zigzag-content {
            order: 1;
        }

        .zigzag-image {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-primary);
            background: var(--bg-card);
            min-height: 280px;
        }

        .zigzag-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 280px;
            transition: transform 0.5s ease;
        }

        .zigzag-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(10, 14, 23, 0.3) 100%);
        }

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

        .zigzag-content h2 {
            font-size: 26px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .zigzag-content>p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .point-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .point-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: var(--bg-card);
            border-radius: 10px;
            padding: 16px 18px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.3s ease;
        }

        .point-list li:hover {
            border-color: var(--border-primary);
            transform: translateX(4px);
        }

        .point-list li>i {
            color: var(--primary);
            font-size: 18px;
            margin-top: 2px;
            flex-shrink: 0;
        }

        .point-list li strong {
            display: block;
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 2px;
        }

        .point-list li span {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 跳转卡片 ===== */
        .jump-links {
            padding: 60px 0;
            background: var(--bg-panel);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .jump-links .section-head {
            text-align: center;
            margin-bottom: 40px;
        }

        .jump-links h2 {
            font-size: 28px;
            font-weight: 800;
            text-align: center;
            margin-bottom: 8px;
        }

        .jump-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .jump-card {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 28px 30px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.3s ease;
        }

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

        .jump-card>i:first-child {
            font-size: 30px;
            color: var(--secondary);
            flex-shrink: 0;
        }

        .jump-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

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

        .jump-card>i:last-child {
            margin-left: auto;
            color: var(--primary);
            font-size: 16px;
            transition: transform 0.3s ease;
        }

        .jump-card:hover>i:last-child {
            transform: translateX(4px);
        }

        /* ===== 安全数据 ===== */
        .security-data {
            padding: var(--section-space) 0;
        }

        .security-data .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .security-data h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .security-data .sub-text {
            font-size: 14px;
            color: var(--text-muted);
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .data-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 36px 30px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.3s ease;
        }

        .data-card:hover {
            border-color: var(--border-primary);
            transform: translateY(-4px);
        }

        .data-num {
            font-size: 36px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            margin-bottom: 6px;
        }

        .data-label {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

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

        /* ===== 保障内容要点 ===== */
        .security-guide {
            padding: 60px 0;
            background: var(--bg-panel);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .security-guide h2 {
            font-size: 28px;
            font-weight: 800;
            text-align: center;
            margin-bottom: 40px;
        }

        .guide-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .guide-item {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.3s ease;
        }

        .guide-item:hover {
            border-color: var(--border-primary);
            transform: translateY(-4px);
        }

        .guide-item .guide-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(139, 92, 246, 0.12);
            color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }

        .guide-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .guide-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--section-space) 0;
        }

        .faq-section .section-head {
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-section h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

        .faq-item.active {
            border-color: var(--border-primary);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            min-height: 56px;
            user-select: none;
            transition: background 0.3s ease;
        }

        .faq-question:hover {
            background: rgba(0, 230, 168, 0.04);
        }

        .faq-q-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary);
            color: #0A0E17;
            font-size: 13px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .faq-question span:not(.faq-q-icon) {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            flex: 1;
        }

        .faq-question i {
            color: var(--text-muted);
            font-size: 14px;
            transition: transform 0.3s ease, color 0.3s ease;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            display: none;
            padding: 0 22px 18px 60px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== 相关分类 ===== */
        .related-categories {
            padding: 60px 0;
            background: var(--bg-panel);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            text-align: center;
        }

        .related-categories h2 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 24px;
        }

        .chip-row {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .rel-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .rel-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 230, 168, 0.06);
            transform: translateY(-2px);
        }

        .rel-chip i {
            font-size: 12px;
        }

        /* ===== CTA ===== */
        .cta-banner {
            position: relative;
            padding: 70px 0;
            background: linear-gradient(135deg, rgba(10, 14, 23, 0.98) 0%, rgba(17, 24, 39, 0.98) 100%);
            border-top: 1px solid var(--border-strong);
            text-align: center;
        }

        .cta-banner .container {
            max-width: 720px;
        }

        .cta-banner h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .cta-banner p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 30px;
            line-height: 1.7;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            margin-bottom: 12px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form input {
            flex: 1;
            height: 48px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
            padding: 0 18px;
            font-size: 14px;
            outline: none;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .cta-form input::placeholder {
            color: var(--text-muted);
        }

        .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(0, 230, 168, 0.15);
        }

        .cta-form .btn {
            height: 48px;
            padding: 0 28px;
            flex-shrink: 0;
            border-radius: 8px;
        }

        .cta-note {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
            margin-top: 10px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0B0F18;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .footer-brand .brand {
            margin-bottom: 14px;
        }

        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 260px;
        }

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

        .footer-social a {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #0A0E17;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

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

        .footer-safety {
            background: rgba(255, 197, 61, 0.04);
            border: 1px solid rgba(255, 197, 61, 0.15);
            border-radius: 10px;
            padding: 18px;
        }

        .safety-header {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 10px;
        }

        .footer-safety p {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 0;
            background: #1A2230;
            margin-top: 0;
        }

        .footer-bottom span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .header-inner {
                padding: 0 16px;
            }

            .main-nav {
                gap: 4px;
            }

            .nav-chip {
                padding: 7px 14px;
                font-size: 13px;
            }

            .zigzag-item {
                gap: 36px;
            }

            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 56px;
            }

            .header-inner {
                flex-wrap: wrap;
                padding-top: 12px;
                padding-bottom: 12px;
                gap: 8px;
            }

            .header-inner .brand {
                order: 1;
            }

            .header-actions {
                order: 2;
                margin-left: auto;
            }

            .main-nav {
                order: 3;
                width: 100%;
                display: flex;
                overflow-x: auto;
                gap: 8px;
                padding-bottom: 4px;
            }

            .nav-chip {
                flex-shrink: 0;
                padding: 6px 14px;
                font-size: 13px;
            }

            .page-banner {
                padding-top: 120px;
                min-height: 200px;
            }

            .banner-inner h1 {
                font-size: 28px;
            }

            .zigzag-item,
            .zigzag-item.reverse {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .zigzag-item.reverse .zigzag-image {
                order: 1;
            }

            .zigzag-item.reverse .zigzag-content {
                order: 2;
            }

            .zigzag-image {
                min-height: 220px;
            }

            .zigzag-image img {
                min-height: 220px;
            }

            .jump-grid {
                grid-template-columns: 1fr;
            }

            .data-grid {
                grid-template-columns: 1fr;
            }

            .guide-grid {
                grid-template-columns: 1fr;
            }

            .cta-form {
                flex-direction: column;
            }

            .cta-form .btn {
                width: 100%;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
                padding: 16px 12px;
            }

            .brand-text {
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .header-actions .btn-sm {
                padding: 8px 14px;
                font-size: 12px;
            }

            .banner-inner h1 {
                font-size: 24px;
            }

            .banner-inner p {
                font-size: 13px;
            }

            .zigzag-content h2 {
                font-size: 21px;
            }

            .faq-question {
                padding: 16px;
            }

            .faq-answer {
                padding-left: 50px;
                padding-right: 16px;
            }

            .jump-card {
                padding: 20px;
                flex-direction: column;
                align-items: flex-start;
            }

            .jump-card>i:last-child {
                margin-left: 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A0E17;
            --bg-panel: #111827;
            --bg-card: #131C2E;
            --primary: #00E6A8;
            --primary-rgb: 0, 230, 168;
            --accent: #8B5CF6;
            --gold: #FFC53D;
            --text-main: #E5EAF2;
            --text-muted: #8A94A6;
            --border-soft: rgba(255, 255, 255, 0.08);
            --border-primary: rgba(0, 230, 168, 0.25);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-chip: 999px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --transition: 300ms ease;
            --container-width: 1200px;
            --font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.8;
            background:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                var(--bg-primary);
            background-size: 40px 40px, 40px 40px, cover;
            color: var(--text-main);
            -webkit-font-smoothing: antialiased;
        }
        img {
            display: inline-block;
            max-width: 100%;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        a:hover {
            color: inherit;
        }
        ul {
            list-style: none;
        }
        button {
            font-family: inherit;
            border: none;
            background: transparent;
            cursor: pointer;
        }
        input {
            font-family: inherit;
        }
        .container {
            width: min(var(--container-width), 92%);
            margin-inline: auto;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition);
        }
        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.95);
        }
        .header-inner {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
            gap: 16px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 230, 168, 0.10);
            border: 1px solid rgba(0, 230, 168, 0.25);
            border-radius: 10px;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }
        .brand-text {
            font-weight: 800;
            font-size: 18px;
            letter-spacing: 0.01em;
            color: #fff;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            padding: 4px;
        }
        .main-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            color: #A0AAB8;
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-chip:hover {
            color: #fff;
            border-color: rgba(0, 230, 168, 0.35);
            background: rgba(0, 230, 168, 0.06);
            transform: translateY(-1px);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #0A0E17;
            border-color: transparent;
            box-shadow: 0 0 12px rgba(0, 230, 168, 0.25);
            font-weight: 700;
        }
        .header-actions {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 8px;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #0A0E17;
            padding: 10px 20px;
            border: none;
        }
        .btn-primary:hover {
            filter: brightness(1.08);
            box-shadow: 0 0 20px rgba(0, 230, 168, 0.30);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        /* ===== Banner ===== */
        .cat-banner {
            position: relative;
            padding: 64px 0 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            background-image:
                linear-gradient(180deg, rgba(10, 14, 23, 0.74), rgba(10, 14, 23, 0.94)),
                url('/assets/images/backpic/back-1.png'),
                linear-gradient(135deg, var(--bg-primary), var(--bg-panel));
            background-size: cover, cover, cover;
            background-position: center, center, center;
            text-align: center;
        }
        .banner-inner {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 230, 168, 0.10);
            border: 1px solid rgba(0, 230, 168, 0.25);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
        }
        .cat-banner h1 {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
        }
        .cat-banner h1 .highlight {
            color: var(--primary);
        }
        .banner-desc {
            color: #A0AAB8;
            font-size: 15px;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }

        /* ===== Section Common ===== */
        .section-zigzag {
            padding: 80px 0 64px;
        }
        .section-head {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
        }
        .section-head p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* ===== Zigzag ===== */
        .zigzag-item {
            margin-bottom: 72px;
            align-items: center;
        }
        .zigzag-item .cell {
            padding: 0 12px;
        }
        .zigzag-media {
            overflow: hidden;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            background: linear-gradient(135deg, rgba(0, 230, 168, 0.06), rgba(139, 92, 246, 0.06)), var(--bg-card);
        }
        .zigzag-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            display: block;
        }
        .zigzag-content {
            padding: 8px 0;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 999px;
            background: rgba(139, 92, 246, 0.12);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid rgba(139, 92, 246, 0.25);
        }
        .zigzag-content h2 {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .zigzag-content p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-list {
            display: grid;
            gap: 10px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 14px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            transition: var(--transition);
        }
        .feature-list li:hover {
            border-color: rgba(0, 230, 168, 0.20);
            background: rgba(0, 230, 168, 0.03);
        }
        .feature-list i {
            color: var(--primary);
            font-size: 14px;
            margin-top: 4px;
            width: 18px;
            text-align: center;
        }
        .feature-list span {
            font-size: 14px;
            color: #C7CED9;
        }

        /* ===== Jump Cards ===== */
        .jump-cards {
            padding: 0 0 80px;
        }
        .jump-card {
            display: flex;
            align-items: center;
            gap: 18px;
            height: 100%;
            width: 100%;
            background: linear-gradient(135deg, var(--bg-card), var(--bg-panel));
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .jump-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .jump-card:hover::after {
            opacity: 1;
        }
        .jump-card:hover {
            border-color: rgba(0, 230, 168, 0.35);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .jump-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(0, 230, 168, 0.10);
            border: 1px solid var(--border-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
        }
        .jump-card-title {
            display: block;
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .jump-card-desc {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .jump-arrow {
            margin-left: auto;
            color: var(--primary);
            font-size: 18px;
            opacity: 0;
            transform: translateX(-8px);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .jump-card:hover .jump-arrow {
            opacity: 1;
            transform: translateX(0);
        }

        /* ===== Stats ===== */
        .stat-bar {
            padding: 56px 0;
            background: var(--bg-panel);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .stat-item {
            text-align: center;
            padding: 12px;
        }
        .stat-num {
            display: block;
            font-size: 40px;
            font-weight: 800;
            color: var(--gold);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .stat-label {
            display: block;
            margin-top: 8px;
            font-size: 13px;
            color: #A0AAB8;
            letter-spacing: 0.05em;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0 64px;
        }
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-card);
            background: var(--bg-panel);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item.active {
            border-color: rgba(0, 230, 168, 0.35);
        }
        .faq-q {
            display: flex;
            align-items: center;
            gap: 14px;
            width: 100%;
            padding: 18px 22px;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-q:hover {
            background: rgba(0, 230, 168, 0.04);
        }
        .q-icon {
            width: 28px;
            height: 28px;
            background: var(--primary);
            color: #0A0E17;
            font-weight: 900;
            font-size: 14px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .chevron {
            margin-left: auto;
            color: var(--text-muted);
            font-size: 12px;
            transition: transform 0.3s ease, color 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .chevron {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-a {
            display: none;
            padding: 0 22px 20px 64px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.active .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-banner {
            margin: 56px 0 80px;
            border: 1px solid rgba(0, 230, 168, 0.20);
            border-top: 2px solid var(--primary);
            background: linear-gradient(135deg, var(--bg-panel), var(--bg-primary));
            padding: 56px 20px;
            text-align: center;
            border-radius: 0 0 var(--radius-card) var(--radius-card);
        }
        .cta-banner h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-banner p {
            color: #A0AAB8;
            font-size: 14px;
            margin-bottom: 28px;
        }
        .cta-form {
            display: flex;
            max-width: 480px;
            margin: 0 auto;
            gap: 12px;
        }
        .cta-form input[type="email"] {
            flex: 1;
            height: 44px;
            min-width: 0;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-btn);
            color: #fff;
            padding: 0 16px;
            font-size: 14px;
            outline: none;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .cta-form input[type="email"]::placeholder {
            color: #6B7280;
        }
        .cta-form input[type="email"]:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(0, 230, 168, 0.15);
        }
        .cta-form .btn {
            height: 44px;
            padding: 0 24px;
            background: var(--primary);
            color: #0A0E17;
            font-weight: 800;
            border: none;
            border-radius: var(--radius-btn);
        }
        .cta-form .btn:hover {
            box-shadow: 0 0 20px rgba(0, 230, 168, 0.35);
            transform: translateY(-1px);
        }
        .cta-note {
            margin-top: 14px;
            font-size: 12px;
            color: #6B7280;
        }

        /* ===== Related Tags ===== */
        .related-tags {
            padding: 48px 0 64px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            text-align: center;
        }
        .related-tags h2 {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 24px;
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .tag-pill {
            padding: 10px 24px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.10);
            color: var(--text-muted);
            font-size: 13px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .tag-pill:hover {
            color: var(--primary);
            border-color: rgba(0, 230, 168, 0.35);
            background: rgba(0, 230, 168, 0.04);
            transform: translateY(-2px);
        }
        .tag-pill.active {
            background: var(--primary);
            color: #0A0E17;
            border-color: transparent;
            font-weight: 700;
            box-shadow: 0 0 12px rgba(0, 230, 168, 0.25);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 56px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 44px;
        }
        .footer-brand .brand {
            margin-bottom: 14px;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 18px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.10);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-social a:hover {
            color: var(--primary);
            border-color: rgba(0, 230, 168, 0.35);
            transform: translateY(-2px);
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 13px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-safety {
            background: rgba(255, 197, 61, 0.05);
            border: 1px solid rgba(255, 197, 61, 0.20);
            border-radius: 10px;
            padding: 14px;
        }
        .safety-header {
            color: var(--gold);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .safety-header i {
            margin-right: 6px;
        }
        .footer-safety p {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .footer-bottom {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: #1A2230;
            padding: 16px 20px;
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .zigzag-media img {
                height: 280px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .header-inner {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 20px;
                gap: 10px;
            }
            .brand {
                flex: 1;
            }
            .brand-text {
                font-size: 16px;
            }
            .main-nav {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 2px;
            }
            .header-actions {
                margin-left: auto;
            }
            .btn-sm {
                padding: 7px 14px;
                font-size: 13px;
            }
            .cat-banner {
                padding: 48px 0 40px;
            }
            .cat-banner h1 {
                font-size: 28px;
            }
            .section-zigzag {
                padding: 56px 0 40px;
            }
            .zigzag-item {
                margin-bottom: 56px;
            }
            .zigzag-content h2 {
                font-size: 22px;
            }
            .zigzag-media img {
                height: 220px;
            }
            .jump-cards {
                padding-bottom: 56px;
            }
            .faq-section {
                padding: 56px 0 48px;
            }
            .cta-banner {
                margin: 40px 0 56px;
                padding: 40px 16px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form input[type="email"],
            .cta-form .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }
        }
        @media (max-width: 520px) {
            .brand-text {
                font-size: 15px;
            }
            .header-actions .btn-sm {
                padding: 7px 12px;
                font-size: 12px;
            }
            .nav-chip {
                padding: 7px 13px;
                font-size: 12px;
            }
            .cat-banner h1 {
                font-size: 24px;
            }
            .banner-desc {
                font-size: 14px;
            }
            .banner-tag {
                font-size: 12px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .zigzag-content {
                padding: 4px 0;
            }
            .faq-a {
                padding: 0 16px 16px 56px;
            }
            .footer-bottom {
                flex-direction: column;
            }
        }