:root{--storefront-blue:#155eef;--storefront-ink:#14213d;--storefront-line:#e4eaf3}
.storefront-nav-cart{border:0;border-radius:999px;background:#155eef;color:#fff;padding:9px 14px;font:inherit;font-weight:700;cursor:pointer}
.storefront-nav-cart b{display:inline-grid;min-width:20px;height:20px;place-items:center;border-radius:50%;background:#fff;color:#155eef;font-size:12px;margin-left:4px}
.storefront-card-actions{display:flex;gap:8px}.storefront-card-actions>*{flex:1;text-align:center}
.sf-mask{position:fixed;inset:0;background:rgba(15,31,58,.52);backdrop-filter:blur(4px);z-index:900;opacity:0;pointer-events:none;transition:.2s}
.sf-mask.open{opacity:1;pointer-events:auto}.sf-panel{position:fixed;z-index:901;right:0;top:0;width:min(480px,100vw);height:100dvh;background:#f8fafc;box-shadow:-24px 0 70px rgba(15,31,58,.22);transform:translateX(100%);transition:.25s;display:flex;flex-direction:column}
.sf-panel.open{transform:none}.sf-head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;background:#fff;border-bottom:1px solid var(--storefront-line)}
.sf-head h2{font-size:20px;margin:0;color:var(--storefront-ink)}.sf-close{border:0;background:#eef2f7;width:38px;height:38px;border-radius:50%;font-size:20px;cursor:pointer}
.sf-body{padding:20px;overflow:auto;flex:1}.sf-item{display:grid;grid-template-columns:1fr auto;gap:12px;padding:16px;background:#fff;border:1px solid var(--storefront-line);border-radius:16px;margin-bottom:12px}
.sf-item-name{font-weight:750;color:var(--storefront-ink)}.sf-price{color:#e5484d;font-weight:800}.sf-qty{display:flex;align-items:center;gap:9px}.sf-qty button{width:32px;height:32px;border:1px solid var(--storefront-line);border-radius:9px;background:#fff;cursor:pointer}
.sf-foot{padding:18px 22px 24px;background:#fff;border-top:1px solid var(--storefront-line)}.sf-total{display:flex;justify-content:space-between;margin-bottom:14px;font-size:18px}.sf-primary,.sf-secondary{width:100%;min-height:46px;border-radius:12px;border:0;font-size:15px;font-weight:750;cursor:pointer}.sf-primary{background:var(--storefront-blue);color:#fff}.sf-secondary{background:#fff;color:var(--storefront-blue);border:1px solid #bfd1ff;margin-top:10px}
.sf-empty{padding:60px 20px;text-align:center;color:#64748b}.sf-step{background:#fff;border:1px solid var(--storefront-line);border-radius:18px;padding:18px;margin-bottom:14px}.sf-step h3{margin:0 0 8px;font-size:18px}.sf-note{color:#64748b;font-size:13px;line-height:1.7}.sf-methods{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.sf-wechat{background:#16a34a}.sf-alipay{background:#1677ff}
.sf-form{display:grid;grid-template-columns:1fr 1fr;gap:10px}.sf-form input{width:100%;min-height:44px;border:1px solid var(--storefront-line);border-radius:10px;padding:0 12px;font-size:15px}.sf-form .wide{grid-column:1/-1}.sf-link{display:block;word-break:break-all;padding:12px;border-radius:10px;background:#f1f5f9;font-size:12px;color:#475569;margin-top:12px}.sf-orders{display:grid;gap:12px}.sf-order{padding:16px;border:1px solid var(--storefront-line);border-radius:14px;background:#fff}.sf-order-top{display:flex;justify-content:space-between;gap:12px}.sf-status{color:#155eef;font-weight:750}
@media(max-width:640px){.storefront-nav-cart{padding:8px 10px}.sf-methods,.sf-form{grid-template-columns:1fr}.sf-form .wide{grid-column:auto}.storefront-card-actions{flex-direction:column}}