/* roulang page: index */
:root {
            --color-base: #0A1128;
            --color-panel: #0D152E;
            --color-primary: #3B82F6;
            --color-accent: #00E5FF;
            --color-text: #F1F5F9;
            --color-text-sub: #94A3B8;
            --color-text-muted: #64748B;
            --color-border: rgba(255, 255, 255, 0.08);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-img: 8px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.45);
            --dur-fast: 0.2s;
            --dur-normal: 0.3s;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }

        body {
            background: var(--color-base);
            color: var(--color-text);
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, sans-serif;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        img { display: block; max-width: 100%; }
        a { color: inherit; text-decoration: none; transition: color var(--dur-fast) ease; }
        button { border: none; background: none; cursor: pointer; font-family: inherit; }
        input { outline: none; font-family: inherit; }

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

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        section[id] { scroll-margin-top: 130px; }

        .dot-grid {
            background-image: radial-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px);
            background-size: 26px 26px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 60;
            background: rgba(10, 17, 40, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            transition: background var(--dur-normal) ease;
        }
        .site-header.scrolled {
            background: rgba(10, 17, 40, 0.95);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .brand-logo:hover .logo-badge {
            box-shadow: 0 0 26px rgba(0, 229, 255, 0.55);
        }
        .logo-badge {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, #3B82F6, #00E5FF);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #fff;
            box-shadow: 0 0 18px rgba(59, 130, 246, 0.45);
            flex-shrink: 0;
            transition: box-shadow var(--dur-normal) ease;
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 32px;
            overflow-x: auto;
            scrollbar-width: none;
            padding-bottom: 2px;
        }
        .channel-row::-webkit-scrollbar { display: none; }

        .channel-link {
            position: relative;
            padding: 9px 2px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-sub);
            white-space: nowrap;
            transition: color var(--dur-fast) ease;
        }
        .channel-link:hover { color: #fff; }
        .channel-link:hover::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
            opacity: 0.5;
        }
        .channel-link.active { color: #fff; }
        .channel-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
        }

        .menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--color-text);
            transition: all var(--dur-fast) ease;
        }
        .menu-btn:hover {
            color: var(--color-accent);
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(10, 17, 40, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            padding: 16px 24px 20px;
            z-index: 59;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }
        .mobile-menu.open { display: block; }
        .mobile-menu a {
            display: block;
            padding: 14px 4px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text-sub);
            transition: color var(--dur-fast) ease, padding-left var(--dur-fast) ease;
        }
        .mobile-menu a:hover { color: var(--color-accent); padding-left: 8px; }
        .mobile-menu a.active { color: var(--color-accent); }
        .mobile-menu a:last-child { border-bottom: none; }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.45);
            transition: all var(--dur-fast) ease;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: #2563EB;
            box-shadow: 0 0 36px rgba(59, 130, 246, 0.75);
            transform: translateY(-2px);
        }
        .btn-primary:active { transform: scale(0.97); }
        .btn-primary:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            transition: all var(--dur-fast) ease;
            cursor: pointer;
        }
        .btn-ghost:hover {
            border-color: var(--color-accent);
            color: #fff;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.2);
        }
        .btn-ghost:active { transform: scale(0.97); }

        .btn-sm { padding: 8px 20px; font-size: 14px; border-radius: 10px; }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 150px 0 84px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.88) 0%, rgba(10, 17, 40, 0.68) 48%, #0A1128 100%);
        }
        .hero-glow {
            position: absolute;
            width: 560px;
            height: 560px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.22), transparent 70%);
            filter: blur(80px);
            top: -120px;
            right: -100px;
            pointer-events: none;
        }
        .hero-light {
            position: absolute;
            top: -20%;
            left: 12%;
            width: 180px;
            height: 140%;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.05), transparent);
            transform: rotate(24deg);
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: linear-gradient(180deg, transparent, #0A1128);
            pointer-events: none;
        }

        /* ===== Countdown ===== */
        .countdown-bar {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-top: 1px solid rgba(0, 229, 255, 0.55);
            border-radius: 14px;
            padding: 14px 24px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            margin-bottom: 56px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
        }
        .countdown-label {
            font-size: 14px;
            color: var(--color-text-sub);
            font-weight: 500;
        }
        .countdown-nums {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 32px;
            font-weight: 800;
            color: var(--color-accent);
            text-shadow: 0 0 16px rgba(0, 229, 255, 0.5);
            font-variant-numeric: tabular-nums;
            line-height: 1;
            letter-spacing: 1px;
        }
        .countdown-nums em {
            font-style: normal;
            font-size: 12px;
            color: var(--color-text-muted);
            font-weight: 400;
            margin-left: 2px;
        }
        .countdown-nums.warning {
            color: #F59E0B;
            text-shadow: 0 0 16px rgba(245, 158, 11, 0.5);
        }

        /* ===== Sections ===== */
        .section { padding: 96px 0; }
        .section-alt { background: var(--color-panel); }

        .section-title {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.3;
            text-align: center;
            margin-bottom: 12px;
            color: var(--color-text);
        }
        .section-desc {
            text-align: center;
            color: var(--color-text-sub);
            font-size: 16px;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.8;
        }

        /* ===== Glass Card ===== */
        .glass-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: all var(--dur-normal) ease;
            box-shadow: var(--shadow-card);
        }
        .glass-card:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(59, 130, 246, 0.35);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(59, 130, 246, 0.1);
            color: var(--color-primary);
            transition: all var(--dur-normal) ease;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .glass-card:hover .feature-icon {
            color: var(--color-accent);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.35);
        }

        .feature-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .feature-desc {
            font-size: 14px;
            color: var(--color-text-sub);
            line-height: 1.7;
        }

        /* ===== Image Wall ===== */
        .wall-item {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            cursor: pointer;
            transition: box-shadow var(--dur-normal) ease;
        }
        .wall-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .wall-item:hover img { transform: scale(1.04); }
        .wall-item:hover { box-shadow: var(--shadow-card-hover); }

        .wall-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 38%, rgba(10, 17, 40, 0.86) 100%);
            transition: background var(--dur-normal) ease;
        }
        .wall-item:hover .wall-overlay {
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.12) 0%, rgba(10, 17, 40, 0.78) 100%);
        }

        .wall-info {
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 14px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 10px;
        }
        .wall-title {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.4);
        }

        .wall-tag {
            display: inline-flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 999px;
            padding: 3px 10px;
            font-size: 12px;
            color: #E2E8F0;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .wall-more {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.14), rgba(0, 229, 255, 0.08));
            border: 1px solid rgba(59, 130, 246, 0.3);
            border-radius: var(--radius-card);
            color: #7CB8FF;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--dur-normal) ease;
        }
        .wall-more:hover {
            border-color: rgba(0, 229, 255, 0.5);
            color: var(--color-accent);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.15);
            transform: translateY(-2px);
        }

        /* ===== CTA Form ===== */
        .cta-box {
            position: relative;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 56px 40px;
            text-align: center;
            overflow: hidden;
        }

        .form-input {
            width: 100%;
            background: rgba(10, 17, 40, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            padding: 13px 16px;
            color: var(--color-text);
            font-size: 15px;
            transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
        }
        .form-input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
        }
        .form-input::placeholder { color: var(--color-text-muted); }

        /* ===== FAQ ===== */
        .faq-wrap { max-width: 820px; margin: 0 auto; }

        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--dur-fast) ease, background var(--dur-fast) ease;
        }
        .faq-item:hover { border-color: rgba(255, 255, 255, 0.16); }
        .faq-item.open {
            border-color: rgba(0, 229, 255, 0.4);
            background: rgba(255, 255, 255, 0.06);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            width: 100%;
            background: transparent;
            transition: color var(--dur-fast) ease;
        }
        .faq-question:hover { color: #fff; }

        .faq-arrow {
            transition: transform var(--dur-normal) ease;
            color: var(--color-text-muted);
            flex-shrink: 0;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--dur-normal) ease;
            padding: 0 22px;
            color: var(--color-text-sub);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 18px;
            border-left: 2px solid var(--color-accent);
        }

        /* ===== News List ===== */
        .news-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 20px 16px;
            border-radius: 10px;
            transition: background var(--dur-fast) ease;
        }
        .news-item:hover { background: rgba(255, 255, 255, 0.03); }

        .badge {
            display: inline-flex;
            align-items: center;
            background: rgba(59, 130, 246, 0.12);
            color: #7CB8FF;
            border: 1px solid rgba(59, 130, 246, 0.25);
            border-radius: 999px;
            padding: 2px 12px;
            font-size: 12px;
            font-weight: 500;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .news-date {
            font-size: 13px;
            color: var(--color-text-muted);
            font-variant-numeric: tabular-nums;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Footer ===== */
        .site-footer {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(10, 17, 40, 0.92);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
        }
        .footer-link {
            display: block;
            padding: 4px 0;
            font-size: 14px;
            color: var(--color-text-sub);
            transition: color var(--dur-fast) ease;
        }
        .footer-link:hover { color: var(--color-accent); }

        .footer-contact {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 5px 0;
            font-size: 14px;
            color: var(--color-text-sub);
        }
        .footer-contact svg { color: var(--color-text-muted); flex-shrink: 0; }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
            color: var(--color-text-muted);
        }

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

        @media (max-width: 768px) {
            .section { padding: 64px 0; }
            .container-site { padding-left: 16px; padding-right: 16px; }
            .hero { padding: 120px 0 60px; }
            .countdown-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 14px 18px;
                margin-bottom: 40px;
            }
            .countdown-nums { font-size: 26px; }
            .desktop-nav { display: none !important; }
            .menu-btn { display: flex; }
            .section-title { font-size: 24px; }
            .section-desc { margin-bottom: 36px; }
            .cta-box { padding: 40px 20px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
        }

        @media (max-width: 520px) {
            .brand-logo { font-size: 17px; }
            .logo-badge { width: 34px; height: 34px; font-size: 13px; border-radius: 10px; }
            .countdown-nums { font-size: 22px; }
            .countdown-label { font-size: 13px; }
            .btn-primary, .btn-ghost { padding: 11px 20px; font-size: 14px; }
            .news-item { flex-wrap: wrap; gap: 8px 12px; }
            .news-date { width: 100%; padding-left: 4px; }
            .wall-tag { display: none; }
        }

/* roulang page: category1 */
:root {
            --color-bg: #0A1128;
            --color-bg-alt: #0D152E;
            --color-primary: #3B82F6;
            --color-primary-dark: #2563EB;
            --color-accent: #00E5FF;
            --color-text: #F1F5F9;
            --color-text-secondary: #94A3B8;
            --color-text-muted: #64748B;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-card-bg: rgba(255, 255, 255, 0.04);
            --color-success: #10B981;
            --color-warning: #F59E0B;
            --color-error: #EF4444;
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-img: 8px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow-primary: 0 0 20px rgba(59, 130, 246, 0.45);
            --shadow-glow-accent: 0 0 16px rgba(0, 229, 255, 0.5);
            --dur-fast: 0.2s;
            --dur-normal: 0.35s;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', system-ui, sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            font-variant-numeric: tabular-nums;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }
        .container-site {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(10, 17, 40, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
            transition: background var(--dur-normal) ease, box-shadow var(--dur-normal) ease;
        }
        .site-header.scrolled {
            background: rgba(10, 17, 40, 0.95);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            letter-spacing: 0.01em;
            color: var(--color-text);
        }
        .logo-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            color: #fff;
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 0.06em;
            box-shadow: var(--shadow-glow-primary);
        }
        .menu-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: color var(--dur-fast), border-color var(--dur-fast), box-shadow var(--dur-fast);
        }
        .menu-btn:hover {
            color: var(--color-accent);
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-glow-accent);
        }
        .channel-row {
            display: flex;
            align-items: center;
            gap: 6px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 8px 0 12px;
        }
        .channel-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: color var(--dur-fast), background var(--dur-fast);
        }
        .channel-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }
        .channel-link.active {
            color: #fff;
            font-weight: 600;
        }
        .channel-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
            box-shadow: var(--shadow-glow-accent);
        }
        .mobile-menu {
            display: none;
            border-top: 1px solid var(--color-border);
            padding: 10px 4px 16px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .channel-link {
            padding: 12px 14px;
            border-radius: 10px;
            font-size: 16px;
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            background: var(--color-primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            line-height: 1;
            cursor: pointer;
            box-shadow: var(--shadow-glow-primary);
            transition: background var(--dur-fast), transform var(--dur-fast), box-shadow var(--dur-fast);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 0 36px rgba(59, 130, 246, 0.75);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--color-text);
            font-size: 16px;
            font-weight: 600;
            line-height: 1;
            cursor: pointer;
            transition: border-color var(--dur-fast), color var(--dur-fast), transform var(--dur-fast), background var(--dur-fast);
        }
        .btn-secondary:hover {
            border-color: var(--color-accent);
            color: #fff;
            background: rgba(0, 229, 255, 0.06);
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: scale(0.97);
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
            border-radius: 10px;
        }
        .btn-lg {
            padding: 14px 40px;
            font-size: 17px;
        }

        /* ===== Hero ===== */
        .hero-category {
            position: relative;
            padding: 80px 0 96px;
            background-image: linear-gradient(180deg, rgba(10, 17, 40, 0.78) 0%, rgba(10, 17, 40, 0.9) 100%), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--color-border);
            overflow: hidden;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.16) 0%, transparent 65%);
            pointer-events: none;
        }
        .hero-category .container-site {
            position: relative;
            z-index: 1;
        }
        .hero-category h1 {
            font-size: 40px;
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: 0.01em;
            color: var(--color-text);
            margin-top: 18px;
}
        .hero-category .hero-sub {
            max-width: 620px;
            font-size: 18px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin-top: 14px;
        }
        @media (max-width: 768px) {
            .hero-category {
                padding: 56px 0 64px;
            }
            .hero-category h1 {
                font-size: 32px;
            }
            .hero-category .hero-sub {
                font-size: 16px;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--dur-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .sep {
            color: var(--color-text-muted);
        }
        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ===== Badge ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.25);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-success);
            box-shadow: 0 0 8px var(--color-success);
        }

        /* ===== Section ===== */
        .section {
            padding: 96px 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .section-title {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-text);
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin-top: 10px;
            max-width: 640px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
            .section-title {
                font-size: 22px;
            }
        }

        /* ===== Cards ===== */
        .glass-card {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: transform var(--dur-normal), border-color var(--dur-normal), background var(--dur-normal), box-shadow var(--dur-normal);
        }
        .glass-card:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: var(--shadow-card-hover);
        }
        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(59, 130, 246, 0.12);
            border: 1px solid rgba(59, 130, 246, 0.2);
            color: var(--color-primary);
            margin-bottom: 18px;
            transition: color var(--dur-fast), box-shadow var(--dur-fast), border-color var(--dur-fast);
        }
        .glass-card:hover .feature-icon {
            color: var(--color-accent);
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-glow-accent);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-secondary);
        }
        .grid-features {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-features {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .grid-features {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== Type Layout ===== */
        .type-layout {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 56px;
            align-items: center;
        }
        .type-media {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--color-border);
            position: relative;
        }
        .type-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
            transition: transform 0.5s ease;
        }
        .type-media:hover img {
            transform: scale(1.04);
        }
        .type-content h2 {
            font-size: 26px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .type-content p {
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .type-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .type-list li {
            position: relative;
            padding-left: 24px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .type-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            box-shadow: var(--shadow-glow-accent);
        }
        @media (max-width: 900px) {
            .type-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .type-media {
                max-width: 80%;
                margin: 0 auto;
            }
            .type-content h2 {
                font-size: 22px;
            }
        }

        /* ===== Steps ===== */
        .grid-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .step-item {
            position: relative;
            padding: 28px 24px 24px;
            border-radius: var(--radius-card);
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            transition: transform var(--dur-normal), border-color var(--dur-normal);
        }
        .step-item:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 255, 0.35);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.3);
            color: var(--color-accent);
            font-size: 15px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
        }
        @media (max-width: 900px) {
            .grid-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .grid-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 40px auto 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
        }
        .faq-item.open {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.06);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 22px;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            transition: color var(--dur-fast);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            position: relative;
            transition: transform var(--dur-normal);
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            background: var(--color-text-secondary);
            transition: background var(--dur-fast), transform var(--dur-normal);
        }
        .faq-icon::before {
            width: 12px;
            height: 1.5px;
            transform: translate(-50%, -50%);
        }
        .faq-icon::after {
            width: 1.5px;
            height: 12px;
            transform: translate(-50%, -50%);
        }
        .faq-item.open .faq-icon {
            transform: rotate(135deg);
        }
        .faq-item.open .faq-icon::before,
        .faq-item.open .faq-icon::after {
            background: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--dur-normal) ease, padding var(--dur-normal) ease;
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }
        .faq-answer p {
            position: relative;
            padding-left: 16px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            border-left: 2px solid rgba(0, 229, 255, 0.5);
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 96px 0;
            background-image: linear-gradient(180deg, rgba(10, 17, 40, 0.85) 0%, rgba(10, 17, 40, 0.92) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            border-top: 1px solid var(--color-border);
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -100px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.18) 0%, transparent 65%);
            pointer-events: none;
        }
        .cta-section .container-site {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.3;
        }
        .cta-section p {
            max-width: 520px;
            margin: 16px auto 0;
            color: var(--color-text-secondary);
            font-size: 16px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .rec-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            max-width: 620px;
            margin: 56px auto 0;
            text-align: left;
        }
        .rec-card {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border);
            transition: border-color var(--dur-fast), background var(--dur-fast), transform var(--dur-fast);
        }
        .rec-card:hover {
            border-color: rgba(0, 229, 255, 0.35);
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-2px);
        }
        .rec-thumb {
            width: 72px;
            height: 72px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .rec-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .rec-card span {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 64px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .rec-cards {
                grid-template-columns: 1fr;
                margin-top: 40px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg);
            border-top: 1px solid var(--color-border);
            padding: 64px 0 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.4fr;
            gap: 48px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--color-border);
        }
        .footer-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-link {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: color var(--dur-fast), padding-left var(--dur-fast);
        }
        .footer-link:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }
        .footer-contact {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 0;
            font-size: 14px;
            color: var(--color-text-secondary);
        }
        .footer-contact svg {
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Responsive misc ===== */
        @media (max-width: 640px) {
            .btn-lg {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category2 */
:root {
            --color-bg: #0A1128;
            --color-bg-alt: #0D152E;
            --color-card: rgba(255, 255, 255, 0.04);
            --color-card-hover: rgba(255, 255, 255, 0.06);
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-blue: rgba(59, 130, 246, 0.35);
            --color-primary: #3B82F6;
            --color-primary-hover: #2563EB;
            --color-accent: #00E5FF;
            --color-text: #F1F5F9;
            --color-text-sub: #94A3B8;
            --color-text-weak: #64748B;
            --radius-card: 16px;
            --radius-btn: 12px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.45);
            --shadow-primary: 0 0 20px rgba(59, 130, 246, 0.45);
            --shadow-primary-hover: 0 0 36px rgba(59, 130, 246, 0.75);
            --shadow-accent: 0 0 16px rgba(0, 229, 255, 0.5);
            --dur-fast: 0.2s;
            --dur-normal: 0.3s;
            --dur-slow: 0.5s;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--dur-fast) ease;
        }

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

        input {
            font-family: inherit;
        }

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .font-tabular {
            font-variant-numeric: tabular-nums;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(10, 17, 40, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            transition: background var(--dur-normal) ease;
        }

        .site-header.scrolled {
            background: rgba(10, 17, 40, 0.95);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            padding: 0 24px;
            max-width: 1280px;
            margin: 0 auto;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: var(--color-text);
        }

        .logo-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 36px;
            height: 36px;
            padding: 0 8px;
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(0, 229, 255, 0.15));
            border: 1px solid rgba(59, 130, 246, 0.4);
            border-radius: 10px;
            font-size: 14px;
            font-weight: 800;
            color: var(--color-accent);
            box-shadow: var(--shadow-accent);
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 32px;
            padding: 0 24px 0;
            max-width: 1280px;
            margin: 0 auto;
            height: 48px;
        }

        .channel-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-sub);
            padding: 10px 2px;
            transition: color var(--dur-fast) ease;
        }

        .channel-link:hover {
            color: var(--color-text);
        }

        .channel-link.active {
            color: var(--color-text);
            font-weight: 600;
        }

        .channel-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 999px;
            box-shadow: var(--shadow-accent);
        }

        .menu-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            color: var(--color-text-sub);
            border: 1px solid var(--color-border);
            transition: all var(--dur-fast) ease;
        }

        .menu-btn:hover {
            color: var(--color-accent);
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-accent);
        }

        .mobile-nav {
            display: none;
            padding: 0 24px 16px;
            border-top: 1px solid var(--color-border);
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav .channel-link {
            display: block;
            padding: 14px 4px;
            border-bottom: 1px solid var(--color-border);
        }

        .mobile-nav .channel-link:last-child {
            border-bottom: none;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            background: var(--color-primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-primary);
            transition: all var(--dur-fast) ease;
            border: none;
            cursor: pointer;
            line-height: 1.2;
        }

        .btn-primary:hover {
            background: var(--color-primary-hover);
            box-shadow: var(--shadow-primary-hover);
            transform: translateY(-2px);
        }

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

        .btn-primary.btn-sm {
            padding: 8px 18px;
            font-size: 14px;
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.35);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            background: transparent;
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--dur-fast) ease;
            cursor: pointer;
        }

        .btn-secondary:hover {
            border-color: var(--color-accent);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
        }

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

        /* ===== 分类页 banner ===== */
        .page-hero {
            position: relative;
            padding: 170px 0 80px;
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.85), rgba(10, 17, 40, 0.7)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid var(--color-border);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.5), transparent);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-weak);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--color-text-sub);
            transition: color var(--dur-fast) ease;
        }

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

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.2);
        }

        .breadcrumb .current {
            color: var(--color-text-sub);
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            color: #fff;
        }

        .page-hero .hero-desc {
            font-size: 18px;
            color: var(--color-text-sub);
            max-width: 640px;
            line-height: 1.8;
        }

        /* ===== 板块 ===== */
        .section-block {
            padding: 72px 0;
        }

        .section-block.alt {
            background: var(--color-bg-alt);
        }

        .section-block .block-header {
            margin-bottom: 48px;
        }

        .section-block .block-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .section-block .block-sub {
            font-size: 16px;
            color: var(--color-text-sub);
            max-width: 720px;
            line-height: 1.7;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            position: relative;
            padding: 32px 24px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            text-align: left;
            transition: all var(--dur-normal) ease;
        }

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

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.35);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 20px;
            font-variant-numeric: tabular-nums;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--color-text-sub);
            line-height: 1.7;
        }

        /* ===== 条件卡片 ===== */
        .condition-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .condition-card {
            padding: 28px 24px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all var(--dur-normal) ease;
        }

        .condition-card:hover {
            background: var(--color-card-hover);
            border-color: var(--color-border-blue);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .condition-card .icon-wrap {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.2);
            margin-bottom: 18px;
        }

        .condition-card .icon-wrap svg {
            width: 20px;
            height: 20px;
            stroke: var(--color-accent);
        }

        .condition-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .condition-card p {
            font-size: 14px;
            color: var(--color-text-sub);
            line-height: 1.7;
        }

        /* ===== 规则 ===== */
        .content-cols {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: start;
        }

        .content-cols h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 20px;
            padding-left: 12px;
            border-left: 3px solid var(--color-accent);
        }

        .content-list {
            list-style: none;
        }

        .content-list li {
            position: relative;
            padding: 12px 0 12px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 15px;
            color: var(--color-text-sub);
            line-height: 1.7;
        }

        .content-list li::before {
            content: "";
            position: absolute;
            left: 4px;
            top: 20px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 8px rgba(59, 130, 246, 0.6);
        }

        .content-list li strong {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--dur-fast) ease;
        }

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

        .faq-item.open {
            border-color: rgba(59, 130, 246, 0.3);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 24px;
            text-align: left;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            cursor: pointer;
            transition: background var(--dur-fast) ease;
        }

        .faq-q:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .faq-q .faq-icon {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            transition: transform var(--dur-normal) ease;
            color: var(--color-text-sub);
        }

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

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--dur-slow) ease;
        }

        .faq-a-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-sub);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 16px;
        }

        .faq-item.open .faq-a {
            max-height: 500px;
        }

        /* ===== 推荐卡片 ===== */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .recommend-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--dur-normal) ease;
        }

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

        .recommend-card .cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
        }

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

        .recommend-card:hover .cover img {
            transform: scale(1.03);
        }

        .recommend-card .card-body {
            padding: 20px 24px 24px;
        }

        .recommend-card .card-tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-accent);
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: 999px;
            padding: 3px 12px;
            margin-bottom: 12px;
        }

        .recommend-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .recommend-card p {
            font-size: 14px;
            color: var(--color-text-sub);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.9), rgba(13, 21, 46, 0.95)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            text-align: center;
            border-top: 1px solid var(--color-border);
        }

        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-section p {
            font-size: 16px;
            color: var(--color-text-sub);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-btn-row {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: rgba(10, 17, 40, 0.95);
            border-top: 1px solid var(--color-border);
            padding: 60px 0 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px 48px;
        }

        .site-footer .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
        }

        .site-footer .footer-link {
            display: block;
            font-size: 14px;
            color: var(--color-text-sub);
            padding: 6px 0;
            transition: color var(--dur-fast) ease;
        }

        .site-footer .footer-link:hover {
            color: var(--color-accent);
        }

        .site-footer .footer-contact {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text-sub);
            padding: 6px 0;
        }

        .site-footer .footer-contact svg {
            stroke: var(--color-text-weak);
        }

        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding: 20px 24px;
            text-align: center;
            font-size: 13px;
            color: var(--color-text-weak);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .content-cols {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-row {
                padding: 0 16px;
            }

            .page-hero {
                padding: 140px 0 56px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .page-hero .hero-desc {
                font-size: 16px;
            }

            .section-block {
                padding: 56px 0;
            }

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

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

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

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

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 0 16px 40px;
            }

            .cta-section {
                padding: 56px 0;
            }

            .cta-section h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            .brand-row {
                height: 56px;
            }

            .page-hero {
                padding-top: 120px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero .hero-desc {
                font-size: 15px;
            }

            .btn-primary,
            .btn-secondary {
                padding: 12px 20px;
                font-size: 14px;
                width: 100%;
            }

            .cta-btn-row {
                flex-direction: column;
                padding: 0 16px;
            }

            .faq-q {
                padding: 16px;
                font-size: 14px;
            }

            .faq-a-inner {
                padding: 0 16px 16px;
                font-size: 13px;
            }
        }
        .channel-row.desktop-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

/* roulang page: article */
:root {
            --color-primary: #3B82F6;
            --color-primary-hover: #2563EB;
            --color-accent: #00E5FF;
            --color-bg: #0A1128;
            --color-bg-alt: #0D152E;
            --color-text: #F1F5F9;
            --color-text-secondary: #94A3B8;
            --color-text-muted: #64748B;
            --color-border: rgba(255,255,255,0.08);
            --color-card-bg: rgba(255,255,255,0.04);
            --color-card-hover: rgba(255,255,255,0.06);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-img: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 12px 40px rgba(0,0,0,0.45);
            --glow-primary: 0 0 20px rgba(59,130,246,0.45);
            --glow-primary-hover: 0 0 36px rgba(59,130,246,0.75);
            --glow-accent: 0 0 16px rgba(0,229,255,0.5);
            --transition-base: all 0.25s ease;
        }

        * {
            box-sizing: border-box;
        }

        html,
        body {
            margin: 0;
            padding: 0;
        }

        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, sans-serif;
            background-color: var(--color-bg);
            background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
            background-size: 24px 24px;
            color: var(--color-text);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input {
            font-family: inherit;
        }

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container-site {
                padding: 0 16px;
            }
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(10,17,40,0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
            transition: var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(10,17,40,0.95);
            box-shadow: 0 8px 32px rgba(0,0,0,0.35);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--color-text);
            transition: var(--transition-base);
        }

        .brand-logo:hover {
            color: #ffffff;
        }

        .logo-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            color: #ffffff;
            font-size: 14px;
            font-weight: 800;
            box-shadow: var(--glow-primary);
        }

        .channel-row {
            display: flex;
            gap: 6px;
            padding: 8px 0 14px;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            white-space: nowrap;
            transition: var(--transition-base);
        }

        .channel-link:hover {
            color: var(--color-text);
            background: rgba(255,255,255,0.05);
        }

        .channel-link.active {
            color: var(--color-accent);
        }

        .channel-link.active::after {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 2px;
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
            box-shadow: var(--glow-accent);
        }

        .menu-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--color-border);
            background: rgba(255,255,255,0.04);
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: var(--transition-base);
        }

        .menu-btn:hover {
            color: var(--color-accent);
            border-color: rgba(0,229,255,0.3);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            background: var(--color-primary);
            color: #ffffff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: var(--glow-primary);
            transition: var(--transition-base);
        }

        .btn-primary:hover {
            background: var(--color-primary-hover);
            box-shadow: var(--glow-primary-hover);
            transform: translateY(-2px);
        }

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

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid rgba(255,255,255,0.25);
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-secondary:hover {
            border-color: var(--color-accent);
            color: #ffffff;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .article-main {
            padding-top: 150px;
            padding-bottom: 96px;
            min-height: 65vh;
        }

        .article-header-block {
            max-width: 768px;
            margin: 0 auto 48px;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
            line-height: 1.5;
        }

        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        .badge-category {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            background: rgba(0,229,255,0.1);
            border: 1px solid rgba(0,229,255,0.25);
            color: var(--color-accent);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .article-h1 {
            font-size: 40px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--color-text);
            margin: 16px 0 12px;
        }

        .meta-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            color: var(--color-text-muted);
            font-size: 13px;
        }

        .article-content {
            max-width: 768px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.9;
            color: #E2E8F0;
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text);
            margin: 48px 0 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border);
        }

        .article-content h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-text);
            margin: 32px 0 16px;
        }

        .article-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-secondary);
            margin: 24px 0 12px;
        }

        .article-content p {
            margin: 16px 0 24px;
        }

        .article-content a {
            color: var(--color-accent);
            border-bottom: 1px solid rgba(0,229,255,0.3);
            transition: var(--transition-base);
        }

        .article-content a:hover {
            color: #ffffff;
            border-color: var(--color-accent);
        }

        .article-content blockquote {
            margin: 24px 0;
            padding: 16px 20px;
            border-left: 3px solid var(--color-accent);
            background: rgba(255,255,255,0.03);
            border-radius: 0 12px 12px 0;
            color: var(--color-text-secondary);
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 24px;
            padding-left: 24px;
        }

        .article-content li {
            margin: 8px 0;
        }

        .article-content img {
            border-radius: var(--radius-img);
            margin: 24px 0;
            width: auto;
        }

        .related-section {
            max-width: 768px;
            margin: 64px auto 0;
        }

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

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

        .related-card {
            display: block;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            background: var(--color-card-bg);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(59,130,246,0.35);
            background: var(--color-card-hover);
            box-shadow: var(--shadow-card-hover);
        }

        .related-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }

        .related-card h3 {
            font-size: 16px;
            font-weight: 600;
            padding: 14px 16px 4px;
            color: var(--color-text);
        }

        .related-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            padding: 0 16px 16px;
            line-height: 1.6;
        }

        .not-found {
            max-width: 768px;
            margin: 0 auto;
            padding: 80px 0;
            text-align: center;
        }

        .not-found p {
            font-size: 18px;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
        }

        .site-footer {
            background: var(--color-bg-alt);
            border-top: 1px solid var(--color-border);
            padding: 64px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
        }

        .footer-link {
            display: block;
            color: var(--color-text-muted);
            font-size: 14px;
            padding: 6px 0;
            transition: var(--transition-base);
        }

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

        .footer-contact {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-muted);
            font-size: 14px;
            padding: 6px 0;
        }

        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 24px;
            text-align: center;
            color: var(--color-text-muted);
            font-size: 13px;
        }

        @media (max-width: 1023px) {
            .desktop-nav.show {
                display: flex;
                flex-direction: column;
                padding: 16px 0 24px;
                gap: 4px;
                border-top: 1px solid var(--color-border);
            }

            .desktop-nav.show .channel-link {
                width: 100%;
                padding: 10px 16px;
                border-radius: 8px;
            }

            .desktop-nav.show .channel-link.active::after {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .article-main {
                padding-top: 110px;
                padding-bottom: 64px;
            }

            .article-h1 {
                font-size: 28px;
            }

            .article-content {
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 21px;
                margin-top: 36px;
            }

            .article-content h3 {
                font-size: 17px;
            }

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

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

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

            .article-h1 {
                font-size: 24px;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
            }
        }