/* roulang page: index */
:root {
    --bg-deep: #0d1424;
    --bg-surface: #111b33;
    --bg-card: rgba(255, 255, 255, 0.05);
    --border-card: rgba(255, 255, 255, 0.12);
    --primary: #38bdf8;
    --primary-hover: #5fd6ff;
    --green: #29e6a9;
    --gold: #f0b35c;
    --text-main: #e8effa;
    --text-sub: #9fb0c7;
    --text-dim: #6d7f99;
    --radius-lg: 18px;
    --radius-md: 10px;
    --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.24);
    --shadow-hover: 0 18px 40px rgba(56, 189, 248, 0.16);
    --shadow-glow: 0 0 24px rgba(56, 189, 248, 0.35);
    --gap: 24px;
    --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --transition: all 0.18s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-main);
    background: var(--bg-deep);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button, input { font-family: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-tag { display: inline-block; font-size: 12px; letter-spacing: 2px; color: var(--primary); background: rgba(56, 189, 248, 0.1); border: 1px solid rgba(56, 189, 248, 0.25); padding: 4px 14px; border-radius: 999px; margin-bottom: 14px; font-weight: 600; }
.section-title { font-size: 40px; font-weight: 800; line-height: 1.25; margin-bottom: 12px; background: linear-gradient(135deg, #e8effa 30%, #38bdf8 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.section-desc { color: var(--text-sub); font-size: 17px; max-width: 640px; margin: 0 auto; }
.text-gold { color: var(--gold); }
.text-green { color: var(--green); }
.text-primary { color: var(--primary); }

/* ===== Header ===== */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(13, 20, 36, 0.88); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), #0369a1); display: flex; align-items: center; justify-content: center; box-shadow: 0 0 18px rgba(56, 189, 248, 0.3); }
.brand-logo i { color: #fff; font-size: 18px; }
.brand-name { font-size: 18px; font-weight: 800; letter-spacing: 0.5px; color: var(--text-main); }
.brand-name span { color: var(--primary); }
.desktop-nav { display: flex; align-items: center; gap: 6px; }
.desktop-nav a { position: relative; padding: 8px 18px; font-size: 15px; color: var(--text-sub); border-radius: 8px; font-weight: 500; }
.desktop-nav a:hover { color: var(--primary); background: rgba(56, 189, 248, 0.08); }
.desktop-nav a.active { color: var(--primary); font-weight: 700; background: rgba(56, 189, 248, 0.1); }
.desktop-nav a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 18px; height: 3px; border-radius: 4px; background: var(--primary); box-shadow: 0 0 10px rgba(56, 189, 248, 0.6); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.btn-primary { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg, #0ea5e9, #0284c7); color: #fff; font-size: 14px; font-weight: 700; padding: 10px 24px; border-radius: 10px; box-shadow: var(--shadow-glow); border: none; cursor: pointer; transition: var(--transition); }
.btn-primary:hover { background: linear-gradient(135deg, var(--primary-hover), #0ea5e9); box-shadow: 0 0 36px rgba(56, 189, 248, 0.55); transform: translateY(-1px); color: #fff; }
.btn-ghost { display: inline-flex; align-items: center; gap: 8px; border: 1.5px solid rgba(255, 255, 255, 0.25); background: transparent; color: var(--text-main); font-size: 14px; font-weight: 600; padding: 10px 24px; border-radius: 10px; cursor: pointer; transition: var(--transition); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: rgba(56, 189, 248, 0.08); }

/* ===== Hero ===== */
.hero { position: relative; min-height: 680px; display: flex; align-items: center; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; isolation: isolate; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, #0d1424 0%, rgba(13, 20, 36, 0.86) 45%, rgba(13, 20, 36, 0.55) 100%); z-index: -1; }
.hero::after { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 75% 50%, rgba(56, 189, 248, 0.18), transparent 65%); z-index: -1; }
.hero-inner { padding: 80px 0; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(240, 179, 92, 0.12); border: 1px solid rgba(240, 179, 92, 0.35); color: var(--gold); font-size: 13px; font-weight: 700; padding: 6px 16px; border-radius: 999px; margin-bottom: 24px; letter-spacing: 1px; }
.hero-badge i { font-size: 12px; }
.hero h1 { font-size: 54px; font-weight: 800; line-height: 1.18; margin-bottom: 20px; color: #fff; letter-spacing: 0.5px; }
.hero h1 .highlight { background: linear-gradient(135deg, #38bdf8, #7dd3fc); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub { font-size: 18px; color: var(--text-sub); max-width: 560px; line-height: 1.75; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 56px; }
.hero-badges-row { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-badges-row .badge { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-dim); background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.08); padding: 6px 16px; border-radius: 999px; }
.hero-badges-row .badge i { color: var(--primary); font-size: 11px; }

/* ===== Trust Bar ===== */
.trust-bar { background: linear-gradient(180deg, var(--bg-deep), rgba(17, 27, 51, 0.6)); padding: 32px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.05); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.trust-item { text-align: center; }
.trust-item i { font-size: 26px; color: var(--primary); margin-bottom: 8px; display: block; }
.trust-item h4 { font-size: 14px; font-weight: 800; letter-spacing: 1px; }
.trust-item p { font-size: 12px; color: var(--text-dim); }

/* ===== Comparison Table ===== */
.compare-section { background: linear-gradient(180deg, rgba(17, 27, 51, 0.4), var(--bg-deep)); }
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border-card); background: var(--bg-card); backdrop-filter: blur(12px); }
.compare-table { width: 100%; min-width: 700px; border-collapse: collapse; }
.compare-table th, .compare-table td { padding: 15px 20px; text-align: center; border-bottom: 1px solid rgba(255, 255, 255, 0.06); font-size: 14px; }
.compare-table th { background: rgba(255, 255, 255, 0.06); font-weight: 700; color: var(--text-main); font-size: 15px; }
.compare-table th:first-child, .compare-table td:first-child { text-align: left; font-weight: 600; min-width: 130px; }
.compare-table td:first-child { color: var(--text-sub); }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table .recommend { background: rgba(56, 189, 248, 0.08); position: relative; }
.compare-table .recommend th { background: rgba(56, 189, 248, 0.18); color: var(--primary); }
.compare-table .recommend::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--primary); box-shadow: 0 0 12px rgba(56, 189, 248, 0.6); }
.compare-table .recommend-badge { display: inline-block; background: linear-gradient(135deg, #0ea5e9, #0284c7); color: #fff; font-size: 11px; font-weight: 800; padding: 2px 10px; border-radius: 999px; margin-left: 6px; }
.compare-table .icon-yes { color: var(--green); }
.compare-table .icon-no { color: var(--text-dim); }
.compare-table .icon-mid { color: var(--gold); }

/* ===== Tier Cards (misaligned) ===== */
.tiers-section { background: var(--bg-deep); }
.tiers-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
.tier-card { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-lg); padding: 40px 28px; text-align: center; backdrop-filter: blur(12px); box-shadow: var(--shadow-card); transition: var(--transition); }
.tier-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.tier-card:nth-child(2) { margin-top: 36px; }
.tier-card:nth-child(3) { margin-top: 72px; }
.tier-card.featured { border-color: rgba(56, 189, 248, 0.5); box-shadow: 0 0 30px rgba(56, 189, 248, 0.2); }
.tier-icon { width: 72px; height: 72px; border-radius: 18px; margin: 0 auto 20px; display: flex; align-items: center; justify-content: center; font-size: 30px; background: rgba(56, 189, 248, 0.12); color: var(--primary); }
.tier-card.featured .tier-icon { background: linear-gradient(135deg, #0ea5e9, #0284c7); color: #fff; box-shadow: var(--shadow-glow); }
.tier-name { font-size: 22px; font-weight: 800; margin-bottom: 8px; }
.tier-tag { display: inline-block; font-size: 12px; color: var(--gold); background: rgba(240, 179, 92, 0.12); border: 1px solid rgba(240, 179, 92, 0.25); padding: 3px 12px; border-radius: 999px; margin-bottom: 16px; }
.tier-desc { color: var(--text-sub); font-size: 14px; line-height: 1.7; margin-bottom: 24px; }
.tier-features { text-align: left; margin-bottom: 28px; }
.tier-features li { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-sub); padding: 6px 0; }
.tier-features li i { color: var(--primary); font-size: 12px; }
.tier-btn { width: 100%; }

/* ===== Preview Cards ===== */
.preview-section { background: linear-gradient(180deg, var(--bg-deep), rgba(17, 27, 51, 0.5)); }
.preview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.preview-card { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-lg); overflow: hidden; backdrop-filter: blur(12px); transition: var(--transition); }
.preview-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(56, 189, 248, 0.35); }
.preview-media { position: relative; height: 180px; overflow: hidden; }
.preview-media img { width: 100%; height: 100%; object-fit: cover; }
.preview-media::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(13, 20, 36, 0.1), rgba(13, 20, 36, 0.6)); }
.preview-lock { position: absolute; top: 12px; right: 12px; z-index: 2; width: 36px; height: 36px; border-radius: 10px; background: rgba(13, 20, 36, 0.7); border: 1px solid rgba(255, 255, 255, 0.2); display: flex; align-items: center; justify-content: center; color: var(--gold); font-size: 14px; backdrop-filter: blur(6px); }
.preview-tag { position: absolute; bottom: 12px; left: 12px; z-index: 2; background: rgba(56, 189, 248, 0.9); color: #fff; font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.preview-body { padding: 22px; }
.preview-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.preview-body p { font-size: 14px; color: var(--text-sub); line-height: 1.65; margin-bottom: 14px; }
.preview-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--text-dim); }
.preview-meta i { font-size: 11px; }

/* ===== CMS News List ===== */
.news-section { background: var(--bg-deep); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-md); padding: 28px; backdrop-filter: blur(12px); transition: var(--transition); display: flex; flex-direction: column; }
.news-card:hover { border-color: var(--primary); box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.news-cat { align-self: flex-start; display: inline-block; font-size: 11px; color: var(--primary); background: rgba(56, 189, 248, 0.1); border: 1px solid rgba(56, 189, 248, 0.2); padding: 3px 12px; border-radius: 999px; margin-bottom: 14px; font-weight: 700; }
.news-card h3 { font-size: 18px; font-weight: 700; line-height: 1.45; margin-bottom: 10px; }
.news-card h3 a { color: var(--text-main); }
.news-card h3 a:hover { color: var(--primary); }
.news-summary { font-size: 14px; color: var(--text-sub); line-height: 1.7; flex: 1; margin-bottom: 18px; }
.news-footer { display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: var(--text-dim); border-top: 1px solid rgba(255, 255, 255, 0.06); padding-top: 14px; }
.news-read-more { display: inline-flex; align-items: center; gap: 4px; color: var(--primary); font-weight: 600; font-size: 13px; transition: all 0.18s ease; }
.news-read-more:hover { gap: 8px; color: var(--primary-hover); }
.news-empty { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-sub); }
.news-empty i { font-size: 44px; color: var(--text-dim); display: block; margin-bottom: 12px; opacity: 0.6; }

/* ===== FAQ ===== */
.faq-section { background: linear-gradient(180deg, var(--bg-deep), rgba(17, 27, 51, 0.4)); }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-md); padding: 0; overflow: hidden; backdrop-filter: blur(12px); transition: var(--transition); }
.faq-item:hover { border-color: rgba(56, 189, 248, 0.3); }
.faq-item.open { border-color: rgba(56, 189, 248, 0.5); }
.faq-question { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; cursor: pointer; font-size: 15px; font-weight: 700; color: var(--text-main); background: transparent; border: none; width: 100%; text-align: left; transition: var(--transition); }
.faq-question:hover { color: var(--primary); }
.faq-item.open .faq-question { color: var(--primary); }
.faq-arrow { width: 28px; height: 28px; border-radius: 8px; background: rgba(255, 255, 255, 0.06); display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--text-sub); transition: transform 0.25s ease; flex-shrink: 0; }
.faq-item.open .faq-arrow { transform: rotate(180deg); background: rgba(56, 189, 248, 0.15); color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.25s ease; }
.faq-answer-inner { padding: 0 22px 18px; font-size: 14px; color: var(--text-sub); line-height: 1.75; }

/* ===== CTA Banner ===== */
.cta-section { padding: 40px 0 120px; background: var(--bg-deep); }
.cta-banner { position: relative; border-radius: 24px; overflow: hidden; padding: 72px 56px; text-align: center; background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat; isolation: isolate; border: 1px solid var(--border-card); }
.cta-banner::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(13, 20, 36, 0.92), rgba(13, 20, 36, 0.72)); z-index: -1; }
.cta-banner::after { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 50% 50%, rgba(56, 189, 248, 0.15), transparent 70%); z-index: -1; }
.cta-banner h2 { font-size: 38px; font-weight: 800; margin-bottom: 16px; }
.cta-banner h2 span { color: var(--primary); }
.cta-banner p { font-size: 17px; color: var(--text-sub); max-width: 600px; margin: 0 auto 36px; line-height: 1.7; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: #0a0f1c; padding: 72px 0 0; border-top: 1px solid rgba(255, 255, 255, 0.06); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 0.8fr; gap: 40px; padding-bottom: 56px; }
.footer-brand .brand-name { font-size: 20px; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; color: var(--text-dim); line-height: 1.7; max-width: 300px; }
.footer-title { font-size: 15px; font-weight: 700; margin-bottom: 18px; color: var(--text-main); letter-spacing: 0.5px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: var(--text-sub); }
.footer-links a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.06); padding: 24px 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 13px; color: var(--text-dim); }
.footer-bottom a { color: var(--text-sub); font-weight: 600; }
.footer-bottom a:hover { color: var(--primary); }

/* ===== Mobile Bottom Tab ===== */
.mobile-tabbar { display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 200; background: rgba(13, 20, 36, 0.95); backdrop-filter: blur(18px); border-top: 1px solid rgba(255, 255, 255, 0.1); padding-bottom: env(safe-area-inset-bottom); }
.mobile-tabbar-inner { display: flex; justify-content: space-around; align-items: center; height: 64px; }
.mobile-tab { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; padding: 6px 0; min-width: 56px; color: var(--text-dim); font-size: 11px; font-weight: 600; transition: var(--transition); }
.mobile-tab i { font-size: 18px; }
.mobile-tab.active { color: var(--primary); }
.mobile-tab.active i { filter: drop-shadow(0 0 6px rgba(56, 189, 248, 0.6)); }
.mobile-tab:hover { color: var(--primary); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .section { padding: 72px 0; }
    .section-title { font-size: 32px; }
    .page-header .desktop-nav { display: none; }
    .hero { min-height: auto; padding: 80px 0; }
    .hero h1 { font-size: 42px; }
    .hero-inner { padding: 60px 0; }
    .tiers-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .tier-card:nth-child(2), .tier-card:nth-child(3) { margin-top: 0; }
    .tier-card:nth-child(3) { grid-column: 1 / -1; max-width: 480px; margin-left: auto; margin-right: auto; }
    .preview-grid { grid-template-columns: 1fr 1fr; }
    .news-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .cta-banner { padding: 56px 32px; }
}

@media (max-width: 640px) {
    .section { padding: 56px 0; }
    .container { padding: 0 16px; }
    .section-head { margin-bottom: 40px; }
    .section-title { font-size: 27px; }
    .page-header { display: none; }
    .hero { padding: 48px 0; }
    .hero h1 { font-size: 30px; }
    .hero-sub { font-size: 16px; }
    .hero-inner { padding: 40px 0; }
    .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
    .tiers-grid { grid-template-columns: 1fr; }
    .tier-card:nth-child(2), .tier-card:nth-child(3) { margin-top: 20px; }
    .tier-card:nth-child(3) { grid-column: auto; max-width: none; }
    .preview-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .faq-grid { grid-template-columns: 1fr; gap: 14px; }
    .cta-banner { padding: 40px 20px; }
    .cta-banner h2 { font-size: 26px; }
    .cta-actions .btn-primary, .cta-actions .btn-ghost { width: 100%; justify-content: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; padding-bottom: 96px; }
    .mobile-tabbar { display: block; }
    .btn-ghost { padding: 8px 16px; font-size: 13px; }
    .btn-primary { padding: 8px 16px; font-size: 13px; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 26px; }
    .hero-sub { font-size: 14px; }
    .hero-badges-row .badge { font-size: 12px; padding: 4px 12px; }
    .table-wrap { border-radius: 12px; }
    .compare-table th, .compare-table td { padding: 12px 14px; font-size: 13px; }
    .news-card { padding: 22px; }
    .cta-banner h2 { font-size: 23px; }
}

/* roulang page: article */
:root {
            --primary: #38bdf8;
            --primary-hover: #5fd6ff;
            --signal-green: #29e6a9;
            --accent-gold: #f0b35c;
            --bg-deep: #0d1424;
            --bg-surface: #111b33;
            --bg-elevated: #16213a;
            --text-main: #e8effa;
            --text-secondary: #9fb0c7;
            --text-muted: #6d7f99;
            --glass-bg: rgba(255, 255, 255, 0.045);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.24);
            --shadow-hover: 0 18px 40px rgba(56, 189, 248, 0.16);
            --shadow-glow: 0 0 24px rgba(56, 189, 248, 0.35);
            --gap: 24px;
            --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background:
                radial-gradient(ellipse 80% 50% at 70% -10%, rgba(56, 189, 248, 0.08), transparent 60%),
                radial-gradient(ellipse 60% 40% at 10% 20%, rgba(29, 78, 216, 0.06), transparent 50%),
                var(--bg-deep);
            color: var(--text-main);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style-position: inside;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--gap);
        }

        .container.narrow {
            max-width: 880px;
        }

        /*===== Header =====*/
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(13, 20, 36, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background .3s ease, box-shadow .3s ease;
        }

        .site-header.scrolled {
            background: rgba(13, 20, 36, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .brand-logo {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #1d4ed8);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .brand-name span {
            color: var(--primary);
        }

        .desktop-nav {
            display: flex;
            gap: 6px;
            align-items: center;
            border: none;
            background: transparent;
            box-shadow: none;
        }

        .desktop-nav a {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            border-bottom: none;
            transition: color .2s, background .2s;
            position: relative;
        }

        .desktop-nav a:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
        }

        .desktop-nav a.active {
            color: var(--primary);
            background: rgba(56, 189, 248, 0.1);
        }

        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
        }

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

        /*===== Buttons =====*/
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            background: linear-gradient(135deg, var(--primary), #0ea5e9);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
            transition: transform .2s, box-shadow .2s, background .2s;
            line-height: 1.4;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 34px rgba(56, 189, 248, 0.45);
            background: linear-gradient(135deg, var(--primary-hover), #0ea5e9);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.3);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            background: rgba(255, 255, 255, 0.03);
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: border-color .2s, color .2s, background .2s, transform .2s;
            line-height: 1.4;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(56, 189, 248, 0.08);
            transform: translateY(-2px);
        }

        /*===== Breadcrumb =====*/
        .breadcrumb-section {
            padding: 28px 0 4px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color .2s;
        }

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

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

        .breadcrumb .current {
            color: var(--text-secondary);
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /*===== Article Header =====*/
        .article-header-section {
            padding: 28px 0 20px;
        }

        .article-category {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 14px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            background: rgba(56, 189, 248, 0.12);
            color: var(--primary);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid rgba(56, 189, 248, 0.2);
        }

        .badge.gold {
            background: rgba(240, 179, 92, 0.12);
            color: var(--accent-gold);
            border-color: rgba(240, 179, 92, 0.2);
        }

        .article-title {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            background: linear-gradient(180deg, var(--text-main) 60%, rgba(232, 239, 250, 0.8));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: var(--text-muted);
            font-size: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 16px;
            margin-top: 4px;
        }

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

        .meta-item i {
            color: var(--primary);
            font-size: 13px;
        }

        /*===== Article Cover =====*/
        .article-cover-section {
            padding: 12px 0 20px;
        }

        .article-cover {
            width: 100%;
            border-radius: var(--radius-lg);
            object-fit: cover;
            max-height: 420px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        /*===== Article Body =====*/
        .article-body-section {
            padding: 16px 0 56px;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.025);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
        }

        .article-content>p {
            margin-bottom: 24px;
            color: #d5dfee;
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 800;
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-main);
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 30px 0 14px;
            color: var(--text-main);
        }

        .article-content h4 {
            font-size: 18px;
            font-weight: 700;
            margin: 24px 0 10px;
            color: var(--text-main);
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }

        .article-content blockquote {
            border-left: 3px solid var(--primary);
            background: rgba(56, 189, 248, 0.07);
            padding: 18px 22px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: normal;
        }

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

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 8px;
            color: #d5dfee;
        }

        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(56, 189, 248, 0.3);
            transition: border-color .2s, color .2s;
        }

        .article-content a:hover {
            color: var(--primary-hover);
            border-bottom-color: var(--primary-hover);
        }

        .article-content hr {
            border: none;
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
            margin: 32px 0;
        }

        /*===== Article Tags =====*/
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 6px;
            font-size: 13px;
            color: var(--text-secondary);
            transition: border-color .2s, color .2s, background .2s;
        }

        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(56, 189, 248, 0.08);
        }

        .tag i {
            font-size: 12px;
        }

        /*===== Not Found =====*/
        .article-not-found {
            text-align: center;
            padding: 60px 32px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
        }

        .not-found-icon {
            font-size: 52px;
            color: var(--text-muted);
            margin-bottom: 20px;
            opacity: 0.5;
        }

        .article-not-found h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

        .not-found-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /*===== Related Section =====*/
        .related-section {
            padding: 64px 0;
            background: linear-gradient(180deg, rgba(13, 20, 36, 0.4), rgba(17, 27, 51, 0.6));
        }

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

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 6px;
            background: rgba(56, 189, 248, 0.1);
            padding: 4px 12px;
            border-radius: 4px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 800;
            margin: 0;
        }

        .related-card {
            height: 100%;
            display: flex;
            flex-direction: column;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform .2s, box-shadow .2s, border-color .2s;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(56, 189, 248, 0.35);
        }

        .related-card-img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .related-card-body {
            padding: 22px 22px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--signal-green);
            background: rgba(41, 230, 169, 0.1);
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .related-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-main);
        }

        .related-card h3 a {
            color: inherit;
            transition: color .2s;
        }

        .related-card h3 a:hover {
            color: var(--primary);
        }

        .related-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }

        .related-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s;
        }

        .related-card:hover .related-card-link {
            gap: 10px;
        }

        .related-card-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--text-muted);
        }

        /*===== Back Entry =====*/
        .back-entry-section {
            padding: 40px 0 32px;
        }

        .back-links {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /*===== CTA =====*/
        .cta-section {
            padding: 48px 0 80px;
        }

        .cta-card {
            position: relative;
            text-align: center;
            padding: 56px 40px;
            background:
                linear-gradient(rgba(13, 20, 36, 0.88), rgba(13, 20, 36, 0.92)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            border-radius: 2px;
        }

        .cta-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-gold);
            background: rgba(240, 179, 92, 0.12);
            border: 1px solid rgba(240, 179, 92, 0.2);
            padding: 4px 14px;
            border-radius: 4px;
            letter-spacing: 1px;
            margin-bottom: 18px;
        }

        .cta-card h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .cta-card p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 480px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /*===== Footer =====*/
        .site-footer {
            background: #0a101f;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 32px;
        }

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

        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            max-width: 340px;
            margin-top: 12px;
        }

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

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

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

        .footer-links a {
            color: var(--text-muted);
            font-size: 14px;
            transition: color .2s, padding-left .2s;
            display: inline-block;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-secondary);
        }

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

        /*===== Mobile Tabbar =====*/
        .mobile-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(13, 20, 36, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: env(safe-area-inset-bottom);
            box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.3);
        }

        .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 10px 4px 8px;
            font-size: 11px;
            font-weight: 500;
            color: var(--text-muted);
            transition: color .2s;
            min-width: 0;
        }

        .tab-item i {
            font-size: 18px;
            margin-bottom: 4px;
            transition: transform .2s;
        }

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

        .tab-item.active i {
            text-shadow: 0 0 12px rgba(56, 189, 248, 0.6);
        }

        .tab-item:hover {
            color: var(--text-secondary);
        }

        .tab-item.active:hover {
            color: var(--primary);
        }

        /*===== Media Queries =====*/
        @media (max-width: 1023.98px) {
            .desktop-nav {
                display: none !important;
            }

            .header-actions .btn-primary {
                display: none;
            }

            .header-inner {
                height: 64px;
            }

            .site-header {
                position: sticky;
            }

            body {
                padding-bottom: 68px;
            }

            .mobile-tabbar {
                display: flex;
            }

            .article-title {
                font-size: 30px;
            }

            .article-content {
                padding: 28px 24px;
            }

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

            .cta-card {
                padding: 44px 24px;
            }

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

        @media (min-width: 640px) and (max-width: 1023.98px) {
            .related-card-img {
                height: 200px;
            }
        }

        @media (max-width: 639.98px) {
            .container {
                padding: 0 16px;
            }

            .breadcrumb-section {
                padding-top: 20px;
            }

            .article-title {
                font-size: 26px;
                line-height: 1.3;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .meta-item i {
                font-size: 12px;
            }

            .article-content {
                padding: 20px 18px;
                border-radius: var(--radius-md);
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 20px;
            }

            .article-content h3 {
                font-size: 18px;
            }

            .article-content blockquote {
                padding: 14px 16px;
            }

            .related-section {
                padding: 48px 0;
            }

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

            .related-card-img {
                height: 160px;
            }

            .cta-section {
                padding: 32px 0 56px;
            }

            .cta-card {
                padding: 36px 20px;
                border-radius: var(--radius-md);
            }

            .cta-card h2 {
                font-size: 22px;
            }

            .cta-card p {
                font-size: 14px;
                margin-bottom: 22px;
            }

            .back-links {
                flex-direction: column;
                align-items: center;
            }

            .back-links .btn-outline {
                width: 100%;
                max-width: 260px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }

            .article-cover {
                max-height: 220px;
                border-radius: var(--radius-md);
            }

            .article-header-section {
                padding-top: 20px;
            }

            .article-category {
                gap: 8px;
            }

            .badge {
                padding: 4px 10px;
                font-size: 12px;
            }

            .article-not-found {
                padding: 40px 20px;
            }

            .not-found-actions {
                flex-direction: column;
                align-items: center;
            }

            .not-found-actions .btn-primary,
            .not-found-actions .btn-outline {
                width: 100%;
                max-width: 240px;
            }
        }

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

        ::selection {
            background: rgba(56, 189, 248, 0.3);
            color: var(--text-main);
        }

/* roulang page: category1 */
/* ========== 1. 设计变量 ========== */
        :root {
            --bg-primary: #0d1424;
            --bg-secondary: #111b33;
            --bg-deep: #080d1a;
            --primary: #38bdf8;
            --primary-hover: #5fd6ff;
            --positive: #29e6a9;
            --gold: #f0b35c;
            --text-main: #e8effa;
            --text-secondary: #9fb0c7;
            --text-muted: #6d7f99;
            --border-light: rgba(255, 255, 255, 0.12);
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-hover: rgba(255, 255, 255, 0.09);
            --radius-card: 12px;
            --radius-large: 18px;
            --radius-btn: 8px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.24);
            --shadow-hover: 0 18px 40px rgba(56, 189, 248, 0.16);
            --glow-primary: 0 0 24px rgba(56, 189, 248, 0.35);
            --glow-strong: 0 0 36px rgba(56, 189, 248, 0.55);
            --transition: 0.2s ease;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 72px;
            --container-max: 1200px;
        }

        /* ========== 2. 基础样式 ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            background: var(--bg-primary);
            color: var(--text-main);
            -webkit-font-smoothing: antialiased;
        }

        body::before {
            content: "";
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 0%, rgba(56, 189, 248, 0.08) 0%, transparent 45%),
                radial-gradient(ellipse at 80% 100%, rgba(41, 230, 169, 0.04) 0%, transparent 40%),
                linear-gradient(rgba(255, 255, 255, 0.012) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
            background-size: 100% 100%, 100% 100%, 44px 44px, 44px 44px;
            pointer-events: none;
            z-index: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        ul,
        ol,
        p,
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            padding: 0;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-main);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .section-space {
            padding: 96px 0;
        }

        /* 锚点与区块标题 */
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.25);
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .section-head {
            margin-bottom: 44px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: 1px;
        }

        .section-head .subtitle {
            color: var(--text-secondary);
            margin-top: 12px;
            max-width: 640px;
        }

        /* ========== 3. 按钮 ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #38bdf8 0%, #0ea5d8 100%);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            cursor: pointer;
            box-shadow: var(--glow-primary);
            transition: all var(--transition);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, #5fd6ff 0%, #1ab2e8 100%);
            color: #fff;
            box-shadow: var(--glow-strong);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            cursor: pointer;
            transition: all var(--transition);
        }

        .btn-outline:hover,
        .btn-outline:focus {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(56, 189, 248, 0.08);
        }

        .btn-lg {
            padding: 15px 32px;
            font-size: 16px;
        }

        /* ========== 4. 头部 / 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(13, 20, 36, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            transition: background 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(8, 13, 26, 0.96);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.25), rgba(56, 189, 248, 0.08));
            border: 1px solid rgba(56, 189, 248, 0.3);
            color: var(--primary);
            font-size: 18px;
            box-shadow: 0 0 18px rgba(56, 189, 248, 0.18);
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--text-main);
            white-space: nowrap;
        }

        .brand-name span {
            color: var(--primary);
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .desktop-nav a {
            position: relative;
            display: block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: all var(--transition);
        }

        .desktop-nav a::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition);
        }

        .desktop-nav a:hover,
        .desktop-nav a:focus {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
        }

        .desktop-nav a:hover::after,
        .desktop-nav a:focus::after {
            transform: scaleX(1);
        }

        .desktop-nav a.active {
            color: var(--primary);
            text-shadow: 0 0 16px rgba(56, 189, 248, 0.35);
        }

        .desktop-nav a.active::after {
            transform: scaleX(1);
        }

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

        .header-actions .btn-primary {
            padding: 9px 20px;
            font-size: 14px;
        }

        /* ========== 5. 面包屑 ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

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

        .breadcrumb-sep {
            color: var(--text-muted);
            opacity: 0.6;
        }

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

        /* ========== 6. 分类 Hero ========== */
        .category-hero {
            position: relative;
            padding: 96px 0 72px;
            background-image: linear-gradient(rgba(13, 20, 36, 0.88), rgba(13, 20, 36, 0.96)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .category-hero::after {
            content: "W66 / CLASSIC ENTRY";
            position: absolute;
            right: 4%;
            bottom: 20px;
            font-size: 12px;
            letter-spacing: 6px;
            color: rgba(255, 255, 255, 0.14);
            font-weight: 700;
            pointer-events: none;
            z-index: 1;
        }

        .category-hero-content {
            max-width: 720px;
        }

        .category-hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: 2px;
            margin-bottom: 18px;
            background: linear-gradient(90deg, var(--text-main) 60%, var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-hero-content p {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 8px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: 999px;
            padding: 6px 14px;
        }

        .badge i {
            color: var(--primary);
        }

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

        /* ========== 7. 展示区（左文右卡） ========== */
        .showcase-section {
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
        }

        .showcase-left {
            padding-right: 40px;
        }

        .showcase-left .section-tag {
            margin-bottom: 14px;
        }

        .showcase-left h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .showcase-left p {
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 26px;
        }

        .feature-list {
            margin-bottom: 28px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 9px 0;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }

        .feature-list li i {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            margin-top: 3px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(41, 230, 169, 0.14);
            color: var(--positive);
            font-size: 11px;
        }

        /* 入口卡片 */
        .card-grid .cell {
            margin-bottom: 24px;
        }

        .entry-card {
            position: relative;
            height: 100%;
            display: flex;
            flex-direction: column;
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: all var(--transition);
        }

        .entry-card:hover {
            border-color: rgba(56, 189, 248, 0.4);
            box-shadow: var(--shadow-hover);
            background: var(--glass-hover);
            transform: translateY(-4px);
        }

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

        .entry-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .entry-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 12px;
            font-weight: 600;
            color: #fff;
            background: rgba(13, 20, 36, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            padding: 4px 12px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .entry-card-tag.gold-tag {
            color: var(--gold);
            border-color: rgba(240, 179, 92, 0.4);
            background: rgba(13, 20, 36, 0.75);
        }

        .entry-card-body {
            display: flex;
            flex-direction: column;
            flex: 1;
            padding: 20px 22px 22px;
        }

        .entry-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .entry-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }

        .entry-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .entry-card-link i {
            transition: transform var(--transition);
        }

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

        /* ========== 8. 特点区域 ========== */
        .features-section {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

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

        .feature-block {
            padding: 28px 26px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            position: relative;
            overflow: hidden;
            transition: all var(--transition);
        }

        .feature-block::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.6), transparent);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .feature-block:hover {
            background: rgba(255, 255, 255, 0.05);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            transform: translateY(-3px);
        }

        .feature-block:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            margin-bottom: 16px;
            font-size: 18px;
            color: var(--primary);
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.22);
        }

        .feature-block h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .feature-block p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ========== 9. 适用场景 ========== */
        .scenario-section {
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
        }

        .scenario-card {
            position: relative;
            height: 100%;
            padding: 32px 30px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-large);
            overflow: hidden;
            transition: all var(--transition);
        }

        .scenario-card:hover {
            border-color: rgba(56, 189, 248, 0.35);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .scenario-card::after {
            content: "< / >";
            position: absolute;
            right: 18px;
            bottom: 10px;
            font-size: 30px;
            font-weight: 700;
            letter-spacing: 2px;
            color: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .scenario-card.primary-scenario {
            border-color: rgba(56, 189, 248, 0.25);
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.1) 0%, rgba(255, 255, 255, 0.03) 60%);
        }

        .scenario-num {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 3px;
            color: var(--gold);
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .scenario-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .scenario-card p {
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .scenario-card.wide-scenario {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 24px;
            align-items: center;
        }

        .scenario-card.wide-scenario h3 {
            margin-bottom: 0;
        }

        /* ========== 10. 访问流程 ========== */
        .process-section {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .process-step {
            position: relative;
            text-align: center;
            padding: 36px 24px 30px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-large);
            height: 100%;
            transition: all var(--transition);
        }

        .process-step:hover {
            border-color: rgba(56, 189, 248, 0.35);
            box-shadow: var(--shadow-hover);
        }

        .step-number {
            position: relative;
            width: 56px;
            height: 56px;
            line-height: 56px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.25), rgba(56, 189, 248, 0.05));
            border: 1px solid rgba(56, 189, 248, 0.4);
            color: var(--primary);
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.15);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .process-arrow {
            position: absolute;
            top: 50%;
            right: -18px;
            width: 36px;
            height: 36px;
            line-height: 36px;
            text-align: center;
            border-radius: 50%;
            background: var(--bg-primary);
            border: 1px solid rgba(56, 189, 248, 0.3);
            color: var(--primary);
            font-size: 14px;
            z-index: 2;
            transform: translateY(-50%);
        }

        /* ========== 11. FAQ ========== */
        .faq-section {
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
        }

        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
        }

        .faq-item[open] {
            border-color: rgba(56, 189, 248, 0.35);
            box-shadow: 0 8px 28px rgba(56, 189, 248, 0.08);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            list-style: none;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            transition: color var(--transition);
            min-height: 48px;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
            transition: transform 0.2s ease;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item[open] summary {
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 22px 22px;
        }

        .faq-answer p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        /* ========== 12. CTA ========== */
        .cta-section {
            padding: 96px 0;
            background: var(--bg-deep);
        }

        .cta-wrapper {
            position: relative;
            border-radius: 24px;
            padding: 72px 48px;
            background-image: linear-gradient(rgba(13, 20, 36, 0.88), rgba(13, 20, 36, 0.92)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border: 1px solid rgba(56, 189, 248, 0.18);
            text-align: center;
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
        }

        .cta-wrapper::before {
            content: "";
            position: absolute;
            top: -40%;
            left: -20%;
            width: 60%;
            height: 180%;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-wrapper::after {
            content: "# W66";
            position: absolute;
            right: 24px;
            bottom: 16px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 4px;
            color: rgba(255, 255, 255, 0.12);
        }

        .cta-wrapper h2 {
            position: relative;
            z-index: 1;
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-wrapper p {
            position: relative;
            z-index: 1;
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 30px;
        }

        .cta-actions {
            position: relative;
            z-index: 1;
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ========== 13. 页脚 ========== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 56px 0 36px;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
        }

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

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

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

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-secondary);
        }

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

        /* ========== 14. 移动端底部导航 ========== */
        .mobile-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 200;
            background: rgba(8, 13, 26, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: env(safe-area-inset-bottom);
            box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.3);
        }

        .mobile-tabbar .tabbar-inner {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            max-width: 600px;
            margin: 0 auto;
        }

        .mobile-tabbar .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            padding: 10px 4px 12px;
            color: var(--text-muted);
            font-size: 11px;
            font-weight: 500;
            transition: color var(--transition);
        }

        .mobile-tabbar .tab-item i {
            font-size: 18px;
            transition: color var(--transition), text-shadow var(--transition);
        }

        .mobile-tabbar .tab-item:hover,
        .mobile-tabbar .tab-item:focus {
            color: var(--text-secondary);
        }

        .mobile-tabbar .tab-item.active {
            color: var(--primary);
            text-shadow: 0 0 12px rgba(56, 189, 248, 0.4);
        }

        .mobile-tabbar .tab-item.active i {
            text-shadow: 0 0 16px rgba(56, 189, 248, 0.5);
        }

        /* ========== 15. 响应式 ========== */
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }

            .header-actions {
                display: none;
            }

            .site-header {
                position: sticky;
            }

            .mobile-tabbar {
                display: block;
            }

            body {
                padding-bottom: 64px;
            }

            .container {
                padding: 0 20px;
            }

            .section-space {
                padding: 72px 0;
            }

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

            .features-inner {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .scenario-card.wide-scenario {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .showcase-left {
                padding-right: 0;
                margin-bottom: 32px;
            }

            .process-arrow {
                display: none;
            }

            .category-hero {
                padding: 64px 0 48px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

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

            .category-hero-content h1 {
                font-size: 30px;
            }

            .category-hero-content p {
                font-size: 15px;
            }

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

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

            .features-inner {
                grid-template-columns: 1fr;
            }

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

            .cta-wrapper {
                padding: 48px 24px;
            }

            .cta-wrapper h2 {
                font-size: 23px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-actions .btn-primary,
            .cta-actions .btn-outline {
                width: 100%;
            }

            .hero-badges {
                gap: 8px;
            }

            .badge {
                font-size: 12px;
                padding: 5px 10px;
                gap: 4px;
            }
        }

        /* ========== 16. 无障碍 ========== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        ::selection {
            background: rgba(56, 189, 248, 0.3);
            color: #fff;
        }

/* roulang page: category2 */
:root {
            --bg: #0d1424;
            --bg-2: #111b33;
            --primary: #38bdf8;
            --primary-hover: #5fd6ff;
            --green: #29e6a9;
            --gold: #f0b35c;
            --text: #e8effa;
            --text-2: #9fb0c7;
            --text-3: #6d7f99;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius: 12px;
            --radius-lg: 18px;
            --shadow: 0 12px 32px rgba(0, 0, 0, 0.24);
            --shadow-hover: 0 18px 40px rgba(56, 189, 248, 0.16);
            --gap: 24px;
            --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --header-h: 72px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse 60% 40% at 85% 10%, rgba(56, 189, 248, 0.08), transparent 60%),
                radial-gradient(ellipse 40% 30% at 10% 80%, rgba(41, 230, 169, 0.04), transparent 60%);
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--header-h);
            background: rgba(13, 20, 36, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background .3s ease, box-shadow .3s ease;
        }
        .site-header.scrolled {
            background: rgba(13, 20, 36, 0.95);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
        }
        .brand-logo {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(56, 189, 248, 0.05));
            border: 1px solid rgba(56, 189, 248, 0.35);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            box-shadow: 0 0 18px rgba(56, 189, 248, 0.18);
        }
        .brand-name {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: .5px;
            color: var(--text);
        }
        .brand-name span {
            color: var(--primary);
            font-weight: 700;
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            border: none;
            background: transparent;
            box-shadow: none;
        }
        .desktop-nav a {
            position: relative;
            padding: 10px 16px;
            border-radius: 8px;
            color: var(--text-2);
            font-size: 15px;
            font-weight: 500;
            transition: color .2s, background .2s;
        }
        .desktop-nav a:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.04);
        }
        .desktop-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .desktop-nav a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
            box-shadow: 0 0 10px rgba(56, 189, 248, 0.6);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #0ea5e9);
            color: #06121f;
            font-weight: 700;
            font-size: 14px;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 24px rgba(56, 189, 248, 0.35);
            transition: box-shadow .2s, transform .2s, opacity .2s;
            text-decoration: none;
        }
        .btn-primary:hover {
            color: #06121f;
            box-shadow: 0 0 36px rgba(56, 189, 248, 0.55);
            transform: translateY(-2px);
            opacity: .94;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 10px;
            background: transparent;
            color: var(--text);
            font-weight: 600;
            font-size: 14px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            cursor: pointer;
            transition: border-color .2s, background .2s, color .2s;
            text-decoration: none;
        }
        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(56, 189, 248, 0.06);
        }

        .mobile-bottom-nav {
            display: none;
        }

        main {
            padding-top: var(--header-h);
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            font-size: 13px;
            color: var(--text-3);
            margin-bottom: 14px;
            letter-spacing: .3px;
        }
        .breadcrumb a {
            color: var(--text-3);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.25);
        }

        .cat-hero {
            padding: 72px 0 48px;
            position: relative;
            background:
                linear-gradient(180deg, rgba(13, 20, 36, 0.88) 0%, rgba(13, 20, 36, 0.72) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .cat-hero::after {
            content: "";
            position: absolute;
            right: -60px;
            top: 20%;
            width: 260px;
            height: 260px;
            border: 1px solid rgba(56, 189, 248, 0.15);
            border-radius: 50%;
            pointer-events: none;
        }
        .cat-hero .hero-content {
            position: relative;
            z-index: 2;
        }
        .cat-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            color: var(--text);
            letter-spacing: 1px;
        }
        .cat-hero h1 .hl {
            color: var(--primary);
        }
        .cat-hero .lead {
            font-size: 17px;
            color: var(--text-2);
            max-width: 560px;
            margin-bottom: 26px;
            line-height: 1.8;
        }
        .hero-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.14);
            box-shadow: var(--shadow);
            position: relative;
            transform: rotate(1deg);
        }
        .hero-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .hero-media::after {
            content: "W66 · 经典入口";
            position: absolute;
            left: 14px;
            bottom: 14px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(13, 20, 36, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--gold);
            font-size: 12px;
            letter-spacing: 1px;
            backdrop-filter: blur(6px);
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 8px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-2);
            font-size: 13px;
            font-weight: 500;
        }
        .badge i {
            color: var(--primary);
            font-size: 12px;
        }

        .trust-bar {
            padding: 36px 0;
            background: rgba(255, 255, 255, 0.02);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .trust-item {
            text-align: center;
            padding: 16px 10px;
            color: var(--text-2);
            font-size: 15px;
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        .trust-item i {
            color: var(--primary);
            font-size: 18px;
        }
        .trust-item .gold {
            color: var(--gold);
        }
        .trust-item .green {
            color: var(--green);
        }

        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .section-head {
            margin-bottom: 40px;
        }
        .section-head .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--primary);
            letter-spacing: 2px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: .5px;
        }
        .section-head p {
            color: var(--text-2);
            margin-top: 10px;
            max-width: 640px;
            line-height: 1.7;
        }

        .intro-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding: 44px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .intro-item:last-child {
            border-bottom: none;
        }
        .intro-item.reverse .intro-media {
            order: 2;
        }
        .intro-item.reverse .intro-copy {
            order: 1;
        }
        .intro-index {
            font-size: 14px;
            font-weight: 700;
            color: var(--gold);
            letter-spacing: 3px;
            margin-bottom: 8px;
        }
        .intro-copy h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
        .intro-copy p {
            color: var(--text-2);
            line-height: 1.8;
            font-size: 15px;
            max-width: 480px;
        }
        .intro-copy .feature-list {
            margin-top: 16px;
        }
        .intro-copy .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 4px 0;
            color: var(--text-2);
            font-size: 14px;
        }
        .intro-copy .feature-list li i {
            color: var(--primary);
            font-size: 13px;
        }
        .intro-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: var(--shadow);
            transition: box-shadow .25s, transform .25s;
        }
        .intro-media:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .intro-media img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }

        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow);
        }

        .compare-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 640px;
        }
        .compare-table thead th {
            background: rgba(13, 20, 36, 0.6);
            padding: 18px 20px;
            text-align: center;
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .compare-table thead th:first-child {
            text-align: left;
        }
        .compare-table thead th.recommend-col {
            background: rgba(56, 189, 248, 0.1);
            border-top: 2px solid var(--primary);
            position: relative;
            color: var(--primary);
        }
        .compare-table thead th.recommend-col::before {
            content: "推荐";
            position: absolute;
            top: -10px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #06121f;
            font-size: 11px;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 10px;
            letter-spacing: 1px;
        }
        .compare-table td {
            padding: 14px 20px;
            text-align: center;
            font-size: 14px;
            color: var(--text-2);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-table td:first-child {
            text-align: left;
            color: var(--text);
            font-weight: 500;
        }
        .compare-table .check {
            color: var(--green);
        }
        .compare-table .cross {
            color: var(--text-3);
        }
        .compare-table tbody tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }
        .table-scroll {
            overflow-x: auto;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 20px;
        }
        .process-step {
            padding: 28px 24px;
            border-radius: var(--radius);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            text-align: center;
            transition: box-shadow .2s, transform .2s, border-color .2s;
        }
        .process-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.4);
        }
        .process-step .step-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--gold);
            letter-spacing: 2px;
            margin-bottom: 12px;
            display: inline-block;
            padding: 2px 14px;
            border-radius: 20px;
            background: rgba(240, 179, 92, 0.1);
            border: 1px solid rgba(240, 179, 92, 0.2);
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.7;
        }
        .process-step i {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }
        .faq-item {
            border-radius: var(--radius);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            padding: 0;
            overflow: hidden;
            transition: border-color .2s, box-shadow .2s;
        }
        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
        }
        .faq-item .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: color .2s;
        }
        .faq-item .faq-q:hover {
            color: var(--primary);
        }
        .faq-item .faq-q i {
            font-size: 14px;
            color: var(--primary);
            transition: transform .2s;
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(45deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }
        .faq-item.open .faq-a {
            max-height: 400px;
        }
        .faq-item .faq-a-inner {
            padding: 0 22px 20px;
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.75;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 0;
            padding-top: 14px;
        }

        .cta-section {
            padding: 72px 0;
            position: relative;
            background:
                linear-gradient(180deg, rgba(13, 20, 36, 0.85) 0%, rgba(13, 20, 36, 0.9) 100%),
                url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .cta-card {
            text-align: center;
            padding: 56px 32px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(56, 189, 248, 0.22);
            box-shadow: 0 0 60px rgba(56, 189, 248, 0.08);
            backdrop-filter: blur(12px);
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            border: 1px solid rgba(56, 189, 248, 0.15);
            border-radius: 50%;
        }
        .cta-card h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 14px;
        }
        .cta-card p {
            color: var(--text-2);
            font-size: 16px;
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .site-footer {
            background: #080e1b;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 0;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-brand p {
            color: var(--text-3);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: .5px;
        }
        .footer-links li {
            padding: 5px 0;
        }
        .footer-links a {
            color: var(--text-2);
            font-size: 14px;
            transition: color .2s;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 13px;
            color: var(--text-3);
        }
        .footer-bottom a {
            color: var(--text-3);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .header-actions .btn-primary {
                display: none;
            }
            .mobile-bottom-nav {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                z-index: 998;
                background: rgba(13, 20, 36, 0.95);
                backdrop-filter: blur(16px);
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                padding: 8px 6px calc(8px + env(safe-area-inset-bottom));
                justify-content: space-around;
            }
            .mobile-bottom-nav a {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 3px;
                font-size: 11px;
                color: var(--text-3);
                padding: 6px 10px;
                border-radius: 10px;
                transition: color .2s, background .2s;
                text-decoration: none;
            }
            .mobile-bottom-nav a i {
                font-size: 18px;
            }
            .mobile-bottom-nav a.active {
                color: var(--primary);
                background: rgba(56, 189, 248, 0.1);
                text-shadow: 0 0 12px rgba(56, 189, 248, 0.4);
            }
            body {
                padding-bottom: 64px;
            }
            .cat-hero {
                padding: 48px 0 32px;
            }
            .cat-hero h1 {
                font-size: 32px;
            }
            .intro-item {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 32px 0;
            }
            .intro-item.reverse .intro-media,
            .intro-item.reverse .intro-copy {
                order: 0;
            }
            .intro-media img {
                height: 200px;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .hero-media img {
                height: 240px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 18px;
            }
            .section {
                padding: 52px 0;
            }
            .cat-hero {
                padding: 40px 0 24px;
            }
            .cat-hero h1 {
                font-size: 28px;
            }
            .cat-hero .lead {
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .section-head p {
                font-size: 14px;
            }
            .hero-media {
                transform: none;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .intro-index {
                font-size: 13px;
            }
            .intro-copy h3 {
                font-size: 20px;
            }
            .intro-copy p {
                font-size: 14px;
            }
            .cta-card {
                padding: 40px 20px;
            }
            .cta-card h2 {
                font-size: 24px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-actions .btn-primary,
            .cta-actions .btn-ghost {
                width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .compare-table thead th,
            .compare-table td {
                padding: 12px 14px;
                font-size: 13px;
            }
            .brand-name {
                font-size: 17px;
            }
        }