:root{--zsb-primary: #1d4ed8;--zsb-primary-light: #2563eb;--zsb-primary-dark: #1e3a8a;--zsb-accent: #0ea5e9;--zsb-bg: #f1f5f9;--zsb-surface: #ffffff;--zsb-text: #0f172a;--zsb-muted: #64748b;--zsb-border: #e2e8f0;--zsb-danger: #ef4444;--zsb-success: #10b981;--zsb-radius: 12px;--zsb-shadow-sm: 0 1px 3px rgba(15, 23, 42, .06);--zsb-shadow: 0 8px 24px rgba(29, 78, 216, .08);--zsb-gradient-hero: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 45%, #0ea5e9 100%)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,sans-serif;background:var(--zsb-bg);color:var(--zsb-text);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.zsb-page{min-height:calc(100vh - 64px)}.zsb-card{background:#fff;border-radius:var(--zsb-radius);border:1px solid var(--zsb-border);box-shadow:var(--zsb-shadow-sm)}.zsb-section-title{font-size:20px;font-weight:600;margin-bottom:16px}.price-tag{color:var(--zsb-danger);font-weight:600}