.sf-root{--sf-primary:#3B82F6;--sf-primary-dark:#2563EB;--sf-bg:#FFFFFF;--sf-text:#1F2937;--sf-text-muted:#6B7280;--sf-border:#E5E7EB;--sf-radius:12px;--sf-radius-sm:4px;--sf-radius-md:8px;--sf-radius-xl:12px;--sf-shadow:0 1px 3px rgba(0,0,0,0.1),0 1px 2px rgba(0,0,0,0.06);--sf-shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);--sf-error-bg:#FEF2F2;--sf-error-text:#DC2626;--sf-disabled-bg:#F3F4F6;--sf-disabled-text:#9CA3AF;font-family:Noto Sans TC,Inter,system-ui,sans-serif;color:var(--sf-text);background:var(--sf-bg);min-height:100vh}.sf-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--sf-border);padding:0 1.5rem;transition:box-shadow .2s ease}.sf-header.scrolled{box-shadow:var(--sf-shadow)}.sf-header-inner{max-width:1200px;margin:0 auto;justify-content:space-between;height:64px}.sf-header-inner,.sf-logo{display:flex;align-items:center}.sf-logo{gap:.75rem;text-decoration:none;color:var(--sf-text);font-weight:700;font-size:1.25rem}.sf-logo img{width:40px;height:40px;border-radius:8px;-o-object-fit:cover;object-fit:cover}.sf-cart-btn{position:relative;background:none;border:none;cursor:pointer;padding:.5rem;border-radius:50%;transition:background .15s;color:var(--sf-text)}.sf-cart-btn:hover{background:rgba(0,0,0,.05)}.sf-cart-badge{position:absolute;top:0;right:0;background:var(--sf-primary);color:white;font-size:.7rem;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;line-height:1;padding:0 4px;transform:translate(30%,-30%);animation:sf-badge-pop .2s ease}@keyframes sf-badge-pop{0%{transform:translate(30%,-30%) scale(.5)}60%{transform:translate(30%,-30%) scale(1.15)}to{transform:translate(30%,-30%) scale(1)}}.sf-hero{position:relative;min-height:400px;display:flex;align-items:center;justify-content:center;text-align:center;color:white;overflow:hidden}.sf-hero-bg{position:absolute;inset:0;background-size:cover;background-position:50%;z-index:-2}.sf-hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.3),rgba(0,0,0,.6));z-index:-1}.sf-hero h1{font-size:2.5rem;font-weight:800;letter-spacing:-.02em;margin-bottom:.5rem}.sf-hero p{font-size:1.125rem;opacity:.9;max-width:600px;margin:0 auto}.sf-section{max-width:1200px;margin:0 auto;padding:3rem 1.5rem}.sf-section-title{font-size:1.75rem;font-weight:700;margin-bottom:2rem;position:relative;display:inline-block}.sf-section-title:after{content:"";position:absolute;bottom:-8px;left:0;width:48px;height:3px;background:var(--sf-primary);border-radius:2px}.sf-category-filter{display:flex;gap:.5rem;margin-bottom:2rem;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding-bottom:4px}.sf-category-filter::-webkit-scrollbar{display:none}@media (min-width:769px){.sf-category-filter{flex-wrap:wrap;overflow-x:visible}}.sf-category-pill{padding:.5rem 1rem;border:1px solid var(--sf-border);border-radius:999px;background:white;cursor:pointer;font-size:.875rem;transition:all .15s;color:var(--sf-text-muted);flex-shrink:0}.sf-category-pill:hover{border-color:var(--sf-primary);color:var(--sf-primary)}.sf-category-pill:focus-visible{outline:2px solid var(--sf-primary);outline-offset:2px}.sf-category-pill:active{transform:scale(.96)}.sf-category-pill.active{background:var(--sf-primary);border-color:var(--sf-primary);color:white}.sf-product-grid{display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.sf-product-card{border:1px solid var(--sf-border);border-radius:var(--sf-radius);overflow:hidden;background:white;transition:transform .2s,box-shadow .2s;cursor:pointer}.sf-product-card:hover{transform:translateY(-4px);box-shadow:var(--sf-shadow-lg)}.sf-product-img{aspect-ratio:4/3;-o-object-fit:cover;object-fit:cover;width:100%;background:#F9FAFB}.sf-product-info{padding:1rem}.sf-product-name{font-weight:600;font-size:1rem;line-height:1.5;letter-spacing:-.01em;margin-bottom:.5rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.sf-product-price{display:flex;align-items:baseline;gap:.5rem}.sf-price-current{font-size:1.25rem;font-weight:700;color:var(--sf-primary)}.sf-price-original{font-size:.875rem;color:var(--sf-text-muted);text-decoration:line-through}.sf-product-badge{display:inline-block;padding:.125rem .5rem;border-radius:4px;font-size:.75rem;font-weight:600;margin-top:.5rem}.sf-badge-sale{background:#FEF2F2;color:#DC2626}.sf-badge-soldout{background:#F3F4F6;color:#9CA3AF}.sf-add-cart-btn{width:100%;margin-top:.75rem;padding:.75rem;background:var(--sf-primary);color:white;border:none;border-radius:var(--sf-radius-md);font-weight:600;font-size:.875rem;cursor:pointer;transition:background .15s,transform .1s;display:flex;align-items:center;justify-content:center;gap:.5rem}.sf-add-cart-btn:hover{background:var(--sf-primary-dark)}.sf-add-cart-btn:active{transform:scale(.98)}.sf-add-cart-btn:focus-visible{outline:2px solid var(--sf-primary);outline-offset:2px}.sf-add-cart-btn:disabled{background:var(--sf-disabled-bg);color:var(--sf-disabled-text);cursor:not-allowed}.sf-cart-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:100;opacity:0;pointer-events:none;transition:opacity .2s}.sf-cart-overlay.open{opacity:1;pointer-events:auto}.sf-cart-panel{position:fixed;top:0;right:0;bottom:0;width:100%;max-width:420px;background:white;z-index:101;transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;box-shadow:-4px 0 15px rgba(0,0,0,.1)}.sf-cart-panel.open{transform:translateX(0)}.sf-cart-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.5rem;border-bottom:1px solid var(--sf-border)}.sf-cart-header h2{font-size:1.125rem;font-weight:700}.sf-cart-close{background:none;border:none;cursor:pointer;padding:.5rem;border-radius:50%;transition:background .15s;color:var(--sf-text-muted)}.sf-cart-close:hover{background:rgba(0,0,0,.05)}.sf-cart-items{flex:1;overflow-y:auto;padding:1rem 1.5rem}.sf-cart-item{display:flex;gap:1rem;padding:1rem 0;border-bottom:1px solid var(--sf-border)}.sf-cart-item:last-child{border-bottom:none}.sf-cart-item-img{width:72px;height:72px;border-radius:8px;-o-object-fit:cover;object-fit:cover;background:#F9FAFB;flex-shrink:0}.sf-cart-item-info{flex:1;min-width:0}.sf-cart-item-name{font-weight:600;font-size:.875rem;margin-bottom:.25rem;word-break:break-word;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.sf-cart-item-price{color:var(--sf-text-muted);font-size:.8rem}.sf-cart-qty{gap:.5rem;margin-top:.5rem}.sf-cart-qty,.sf-qty-btn{display:flex;align-items:center}.sf-qty-btn{width:32px;height:32px;border:1px solid var(--sf-border);border-radius:var(--sf-radius-sm);background:white;cursor:pointer;justify-content:center;font-size:.875rem;transition:border-color .15s}.sf-qty-btn:hover{border-color:var(--sf-primary)}.sf-qty-btn:focus-visible{outline:2px solid var(--sf-primary);outline-offset:2px}.sf-qty-value{font-size:.875rem;font-weight:600;min-width:24px;text-align:center}.sf-cart-item-remove{color:#EF4444;font-size:.75rem;cursor:pointer;background:none;border:none;padding:0;margin-top:.25rem}.sf-cart-item-remove:hover{text-decoration:underline}.sf-cart-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--sf-text-muted);gap:1rem}.sf-cart-empty svg{width:64px;height:64px;opacity:.3}.sf-cart-footer{padding:1rem 1.5rem;border-top:1px solid var(--sf-border)}.sf-cart-total{display:flex;justify-content:space-between;font-size:1.125rem;font-weight:700;margin-bottom:1rem}.sf-checkout-btn{width:100%;padding:.75rem;background:var(--sf-primary);color:white;border:none;border-radius:var(--sf-radius-md);font-weight:700;font-size:1rem;cursor:pointer;transition:background .15s,transform .1s;display:flex;align-items:center;justify-content:center;gap:.5rem}.sf-checkout-btn:hover{background:var(--sf-primary-dark)}.sf-checkout-btn:active{transform:scale(.98)}.sf-checkout-btn:disabled{background:var(--sf-disabled-bg);color:var(--sf-disabled-text);cursor:not-allowed}.sf-checkout{max-width:800px;margin:0 auto;padding:2rem 1.5rem}.sf-checkout h1{font-size:1.75rem;font-weight:700;margin-bottom:2rem}.sf-form-group{margin-bottom:1.25rem}.sf-form-label{display:block;font-weight:600;font-size:.875rem;margin-bottom:.5rem;color:var(--sf-text)}.sf-form-label .required{color:#EF4444;margin-left:2px}.sf-form-input{width:100%;padding:.75rem 1rem;border:1px solid var(--sf-border);border-radius:var(--sf-radius-md);font-size:.9375rem;transition:border-color .15s,box-shadow .15s;outline:none}.sf-form-input:focus{border-color:var(--sf-primary);box-shadow:0 0 0 3px rgba(59,130,246,.1)}.sf-form-textarea{min-height:80px;resize:vertical}.sf-order-summary{background:#F9FAFB;border-radius:var(--sf-radius);padding:1.5rem;margin-bottom:2rem}.sf-order-summary h3{font-weight:700;margin-bottom:1rem}.sf-summary-item{display:flex;justify-content:space-between;padding:.5rem 0;font-size:.875rem;gap:1rem}.sf-summary-item span:first-child{word-break:break-word;flex:1}.sf-summary-item span:last-child{flex-shrink:0;white-space:nowrap}.sf-summary-total{display:flex;justify-content:space-between;padding-top:1rem;margin-top:.5rem;font-size:1.125rem;font-weight:700}.sf-footer,.sf-summary-total{border-top:1px solid var(--sf-border)}.sf-footer{padding:2rem 1.5rem;text-align:center;color:var(--sf-text-muted);font-size:.875rem}.sf-footer a{color:var(--sf-primary);text-decoration:none}.sf-footer a:hover{text-decoration:underline}.sf-maintenance{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;text-align:center;color:var(--sf-text-muted);gap:1rem}.sf-maintenance svg{width:80px;height:80px;opacity:.3}.sf-success{max-width:600px;margin:4rem auto;text-align:center;padding:3rem 1.5rem}.sf-success-icon{width:80px;height:80px;border-radius:50%;background:#ECFDF5;color:#10B981;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem}.sf-success h1{font-size:1.5rem;font-weight:700;margin-bottom:.5rem}.sf-success p{color:var(--sf-text-muted);margin-bottom:2rem}@media (max-width:768px){.sf-hero{min-height:300px}.sf-hero h1{font-size:1.75rem}.sf-product-grid{grid-template-columns:repeat(2,1fr);gap:1rem}.sf-section{padding:2rem 1rem}.sf-cart-panel{max-width:100%}.sf-qty-btn{width:36px;height:36px;font-size:1rem}.sf-qty-value{min-width:32px}}@media (max-width:480px){.sf-product-grid{grid-template-columns:1fr}}.sf-checkout-error{background:var(--sf-error-bg);color:var(--sf-error-text);padding:.75rem 1rem;border-radius:var(--sf-radius-md);margin-bottom:1rem;font-size:.875rem;border:1px solid rgba(220,38,38,.15)}