:root{--primary: #0d9488;--primary-dark: #0f766e;--bg: #f8fafc;--surface: #ffffff;--text: #0f172a;--muted: #64748b;--border: #e2e8f0;--danger: #dc2626;--radius: 12px;--shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .04);--header-h: 56px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}.sf-header{position:sticky;top:0;z-index:20;height:var(--header-h);background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 16px;box-shadow:var(--shadow)}.sf-header h1{font-size:1.05rem;font-weight:700;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sf-cart-btn{position:relative;background:#ffffff2e;border:none;color:#fff;border-radius:999px;padding:8px 14px;font-weight:600;display:flex;align-items:center;gap:6px}.sf-cart-badge{background:#fff;color:var(--primary-dark);border-radius:999px;font-size:.72rem;font-weight:700;min-width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;padding:0 5px}.sf-container{max-width:960px;margin:0 auto;padding:16px}.sf-welcome{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;margin-bottom:16px;color:var(--muted);box-shadow:var(--shadow)}.sf-search{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:1rem;margin-bottom:16px;background:var(--surface)}.sf-search:focus{outline:none;border-color:var(--primary)}.sf-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}@media(min-width:640px){.sf-grid{grid-template-columns:repeat(3,1fr)}}@media(min-width:880px){.sf-grid{grid-template-columns:repeat(4,1fr)}}.sf-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow)}.sf-card-img{aspect-ratio:1 / 1;background:#f1f5f9;display:flex;align-items:center;justify-content:center;overflow:hidden}.sf-card-img img{width:100%;height:100%;object-fit:cover}.sf-card-img .sf-noimg{color:#cbd5e1;font-size:2rem}.sf-card-body{padding:10px 12px 12px;display:flex;flex-direction:column;gap:6px;flex:1}.sf-card-name{font-size:.86rem;line-height:1.25;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.1em}.sf-card-price{font-weight:700;font-size:1rem;color:var(--text);margin-top:auto}.sf-oos{font-size:.72rem;color:var(--danger);font-weight:600}.sf-btn{background:var(--primary);color:#fff;border:none;border-radius:var(--radius);padding:10px 14px;font-weight:600;font-size:.9rem;width:100%;transition:background .15s}.sf-btn:hover{background:var(--primary-dark)}.sf-btn:disabled{background:#cbd5e1;cursor:not-allowed}.sf-btn-ghost{background:transparent;color:var(--primary);border:1px solid var(--primary)}.sf-btn-ghost:hover{background:#0d94880f}.sf-badge-featured{display:inline-block;background:#0d94881f;color:var(--primary-dark);font-size:.66rem;font-weight:700;padding:2px 7px;border-radius:999px;text-transform:uppercase;letter-spacing:.03em}.sf-overlay{position:fixed;inset:0;background:#0f172a80;z-index:40;display:flex;justify-content:flex-end}.sf-sheet{width:100%;max-width:420px;background:var(--bg);height:100%;display:flex;flex-direction:column;box-shadow:-4px 0 16px #0000001f}.sf-sheet-head{height:var(--header-h);background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 16px;font-weight:700}.sf-close{border:none;background:none;font-size:1.4rem;line-height:1;color:var(--muted)}.sf-sheet-body{flex:1;overflow-y:auto;padding:16px}.sf-line{display:flex;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:10px;margin-bottom:10px}.sf-line-img{width:56px;height:56px;border-radius:8px;background:#f1f5f9;object-fit:cover;flex-shrink:0}.sf-line-info{flex:1;min-width:0}.sf-line-name{font-size:.85rem;line-height:1.2;margin-bottom:4px}.sf-qty{display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:999px;overflow:hidden}.sf-qty button{border:none;background:var(--surface);width:28px;height:28px;font-size:1rem;color:var(--primary-dark)}.sf-qty span{min-width:28px;text-align:center;font-weight:600;font-size:.85rem}.sf-sheet-foot{border-top:1px solid var(--border);background:var(--surface);padding:16px}.sf-total-row{display:flex;justify-content:space-between;font-weight:700;font-size:1.1rem;margin-bottom:12px}.sf-field{margin-bottom:12px}.sf-field label{display:block;font-size:.8rem;color:var(--muted);margin-bottom:4px}.sf-input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font-size:.95rem;background:var(--surface)}.sf-input:focus{outline:none;border-color:var(--primary)}.sf-error{color:var(--danger);font-size:.82rem;margin:8px 0}.sf-min-warn{color:#b45309;font-size:.82rem;margin-bottom:8px}.sf-center{min-height:60vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--muted);padding:24px;gap:8px}.sf-empty{text-align:center;color:var(--muted);padding:48px 16px}.sf-detail{display:grid;gap:20px}@media(min-width:640px){.sf-detail{grid-template-columns:1fr 1fr;align-items:start}}.sf-detail-img{aspect-ratio:1 / 1;background:#f1f5f9;border-radius:var(--radius);overflow:hidden;display:flex;align-items:center;justify-content:center}.sf-detail-img img{width:100%;height:100%;object-fit:cover}.sf-back{display:inline-block;color:var(--muted);margin-bottom:12px;font-size:.9rem}.sf-detail-price{font-size:1.6rem;font-weight:800;margin:12px 0}