:root{--color-primary: #0052d9;--color-primary-light: #1890ff;--color-bg: #f5f7fa;--color-card: #ffffff;--color-text: #1f2329;--color-text-secondary: #646a73;--color-border: #e5e6eb;--color-success: #00a870;--color-warning: #ed7b2f;--color-danger: #e34d59;--radius-card: 12px;--shadow-card: 0 2px 12px rgba(0, 0, 0, .06);--tab-height: 56px;--safe-bottom: env(safe-area-inset-bottom, 0px)}*{box-sizing:border-box}html,body,#app{margin:0;min-height:100%;font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}a{color:var(--color-primary);text-decoration:none}button{font:inherit}.page-title{margin:0 0 16px;font-size:20px;font-weight:600}.card{background:var(--color-card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:16px}.muted{color:var(--color-text-secondary);font-size:13px}.empty-state{text-align:center;padding:48px 16px;color:var(--color-text-secondary)}.site-header{position:sticky;top:0;z-index:100;background:#fffffff2;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border)}.site-header-inner{max-width:1120px;margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;gap:32px}.site-brand{font-weight:700;font-size:17px;color:var(--color-primary);white-space:nowrap}.site-nav{display:flex;gap:20px;flex:1}.site-nav a{color:var(--color-text);font-size:14px;padding:6px 0;border-bottom:2px solid transparent}.site-nav a.router-link-active{color:var(--color-primary);border-bottom-color:var(--color-primary);font-weight:600}.site-actions{display:flex;gap:10px;align-items:center}.site-btn{padding:8px 16px;border-radius:8px;border:none;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center}.site-btn-primary{background:var(--color-primary);color:#fff}.site-btn-ghost{background:transparent;color:var(--color-primary);border:1px solid var(--color-primary)}.site-main{min-height:calc(100vh - 264px)}.site-footer{background:#1a1f36;color:#ffffffbf;padding:40px 20px 24px;margin-top:48px}.site-footer-inner{max-width:1120px;margin:0 auto}.site-footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:24px;margin-bottom:32px}.site-footer h4{color:#fff;margin:0 0 12px;font-size:14px}.site-footer a{color:#ffffffa6;display:block;margin-bottom:8px;font-size:13px}.site-footer-copy{border-top:1px solid rgba(255,255,255,.1);padding-top:16px;font-size:12px}.site-section{max-width:1120px;margin:0 auto;padding:48px 20px}.site-section-title{margin:0 0 8px;font-size:28px;font-weight:700}.site-section-intro{margin:0 0 32px;color:var(--color-text-secondary);max-width:640px}.site-hero{background:linear-gradient(135deg,#e8f3ff,#f5f7fa 60%);padding:72px 20px 64px;text-align:center}.site-hero h1{margin:0 0 16px;font-size:36px;color:var(--color-primary)}.site-hero p{margin:0 auto 28px;max-width:640px;color:var(--color-text-secondary);font-size:17px;line-height:1.6}.site-hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.site-grid-3{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.site-grid-4{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}.site-card{background:var(--color-card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:24px}.site-card h3{margin:0 0 8px;font-size:18px}.site-stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px;margin:32px 0}.site-stat{text-align:center;padding:20px;background:var(--color-card);border-radius:var(--radius-card);box-shadow:var(--shadow-card)}.site-stat strong{display:block;font-size:28px;color:var(--color-primary);margin-bottom:4px}.site-tag{display:inline-block;padding:2px 8px;border-radius:4px;background:#e8f3ff;color:var(--color-primary);font-size:12px;margin-right:6px;margin-bottom:6px}.site-badge-recommended{background:var(--color-warning);color:#fff;font-size:11px;padding:2px 8px;border-radius:4px;margin-left:8px}.product-card{display:flex;flex-direction:column;height:100%}.product-card-body{flex:1}.product-card-price{font-size:20px;font-weight:700;color:var(--color-primary);margin:12px 0}.product-card-meta{font-size:13px;color:var(--color-text-secondary);margin-bottom:12px}.checkout-layout{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start}@media(max-width:768px){.site-nav{display:none}.checkout-layout{grid-template-columns:1fr}.site-hero h1{font-size:28px}}