:root{--color-primary:#2563eb;--color-price:#ea580c;--color-wechat:#047857;--color-bg:#f8fafc;--color-text:#1e293b;--color-muted:#475569;--color-card:#fff;--color-border:#e2e8f0;--content-width:75rem;--radius-card:1rem;--shadow-card:0 12px 32px #0f172a14;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-7:3rem;--space-8:4rem;--motion-fast:.18s ease;--mobile-bar-space:5.75rem}*,:before,:after{box-sizing:border-box}html{min-width:20rem;scroll-padding-top:5rem;scroll-padding-bottom:var(--mobile-bar-space)}body{background:var(--color-bg);min-width:20rem;color:var(--color-text);text-rendering:optimizelegibility;margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft 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