*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans TC',sans-serif;background:#f5f5f5;color:#333;min-height:100vh}
img{display:block}
button{border:none;cursor:pointer;font-family:inherit}
button:active{opacity:.7}
input,textarea{font-family:inherit}

@keyframes pop{0%{transform:scale(.85);opacity:0}100%{transform:scale(1);opacity:1}}
@keyframes fadeIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
@keyframes spin{to{transform:rotate(360deg)}}
.fade{animation:fadeIn .2s ease}
.hidden{display:none !important}

.toast{position:fixed;top:16px;left:50%;transform:translateX(-50%);z-index:999;background:#333;color:#fff;padding:8px 20px;border-radius:20px;font-size:13px;font-weight:500;animation:pop .2s ease;box-shadow:0 4px 12px rgba(0,0,0,.15)}

.header{background:#fff;border-bottom:1px solid #e8e8e8;padding:14px 20px;display:flex;align-items:center;position:sticky;top:0;z-index:50;gap:4px}
.header-title{flex:1}
.header-brand{font-size:15px;font-weight:700}
.header-sub{font-size:12px;color:#aaa;margin-left:8px}
.btn-icon{background:none;font-size:18px;color:#666;padding:4px;display:flex;align-items:center}
.cart-btn{font-size:20px;position:relative}
.badge{position:absolute;top:-4px;right:-6px;background:#e74c3c;color:#fff;font-size:10px;font-weight:700;width:17px;height:17px;border-radius:9px;display:flex;align-items:center;justify-content:center}

.page{animation:fadeIn .2s ease}

.shop-header{text-align:center;padding:20px 0 16px}
.shop-header h1{font-size:18px;font-weight:900;letter-spacing:1px}
.shop-header p{font-size:12px;color:#999;margin-top:2px}

.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;max-width:1400px;margin:0 auto;padding:0 16px}
.product-card{background:#fff;border-radius:12px;overflow:hidden;border:1px solid #eee;cursor:pointer;transition:transform .15s,box-shadow .15s}
.product-card:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.08)}
.product-card .img-wrap{position:relative}
.product-card .img-wrap img{width:100%;aspect-ratio:1/1;object-fit:cover}
.product-card .card-text{padding:10px 10px 12px;border-top:1px solid #f0f0f0}
.product-card .card-name{font-size:12px;font-weight:600;line-height:1.4;min-height:34px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-card .card-price{font-size:16px;font-weight:900;margin-top:4px}

.badge-tl{position:absolute;top:6px;left:6px;background:rgba(0,0,0,.55);color:#fff;font-size:10px;padding:2px 7px;border-radius:4px}
.badge-tr{position:absolute;top:6px;right:6px;background:rgba(255,255,255,.85);color:#333;font-size:10px;padding:2px 7px;border-radius:4px;font-weight:500}
.badge-br{position:absolute;bottom:6px;right:6px;background:rgba(255,255,255,.85);color:#e67e22;font-size:10px;padding:2px 7px;border-radius:4px;font-weight:500}

.detail-wrap{max-width:1000px;margin:0 auto;padding:16px 16px 100px}
.detail-layout{display:flex;flex-direction:column}
.detail-img-wrap{position:relative;width:100%}
.detail-img-wrap img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:0 0 12px 12px}
.detail-info{padding:16px 0}
.detail-name{font-size:20px;font-weight:900;line-height:1.3}
.detail-price{font-size:24px;font-weight:900;margin-top:8px}

.tag-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.tag{font-size:11px;padding:4px 10px;border-radius:6px}
.tag-gray{color:#666;background:#f0f0f0}
.tag-blue{color:#2d7ff9;background:#e8f0fe;font-weight:500}
.tag-orange{color:#e67e22;background:#fef3e2;font-weight:500}

.note-box{font-size:13px;color:#e67e22;margin-top:12px;padding:8px 12px;background:#fef9f0;border-radius:8px;border:1px solid #fde6c4}
.desc-text{margin-top:16px;font-size:14px;color:#555;line-height:1.7}
.divider{height:1px;background:#eee;margin:20px 0}

.selector-title{font-size:14px;font-weight:700;margin-bottom:8px}
.selector-row{display:flex;flex-wrap:wrap;gap:6px}
.sel-btn{padding:8px 14px;border-radius:8px;font-size:13px;background:#fff;color:#666;border:1px solid #ddd;font-family:inherit}
.sel-btn.active{background:#333;color:#fff;border-color:#333;font-weight:700}
.sel-hint{font-size:12px;color:#2d7ff9;margin-top:8px}

.qty-row{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.qty-label{font-size:14px;font-weight:600}
.qty-ctrl{display:flex;align-items:center;border:1px solid #ddd;border-radius:8px;overflow:hidden}
.qty-btn{width:36px;height:36px;background:#fafafa;font-size:16px;color:#888}
.qty-val{width:40px;text-align:center;font-size:15px;font-weight:700}
.qty-info{font-size:12px;color:#999}

.btn-add{width:100%;padding:14px;border-radius:10px;background:#333;color:#fff;font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center;gap:8px}
.btn-add-sub{font-size:13px;opacity:.7}

.cart-wrap{max-width:640px;margin:0 auto;padding:16px 16px 100px}
.cart-title{font-size:17px;font-weight:700;margin-bottom:14px}
.cart-list{display:flex;flex-direction:column;gap:6px}
.cart-item{background:#fff;border-radius:10px;padding:12px 14px;border:1px solid #eee;display:flex;align-items:center;gap:10px}
.cart-item-info{flex:1;min-width:0}
.cart-item-name{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cart-item-meta{font-size:11px;color:#999;margin-top:2px}
.cart-item-meta .size{margin-left:6px;color:#e67e22}
.cart-item-meta .sales{margin-left:6px;color:#bbb}
.cart-qty{display:flex;align-items:center;gap:6px}
.cart-qty button{width:26px;height:26px;border-radius:6px;background:#f5f5f5;font-size:14px;color:#888}
.cart-qty span{font-size:14px;font-weight:700;min-width:16px;text-align:center}
.cart-subtotal{font-size:14px;font-weight:700;min-width:60px;text-align:right}

.cart-total{margin-top:16px;padding:16px;background:#fff;border-radius:10px;border:1px solid #eee;display:flex;justify-content:space-between;align-items:baseline}
.cart-total-label{font-size:13px;color:#888}
.cart-total-price{font-size:24px;font-weight:900}

.form-section{margin-top:20px}
.form-title{font-size:14px;font-weight:700;margin-bottom:10px}
.form-fields{display:flex;flex-direction:column;gap:8px}
.form-input{padding:11px 12px;border-radius:8px;border:1px solid #e0e0e0;font-size:14px;outline:none;width:100%}
.form-input:focus{border-color:#2d7ff9}
textarea.form-input{resize:vertical}

.btn-submit{width:100%;margin-top:16px;padding:14px;border-radius:10px;font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center;gap:8px}
.btn-submit.enabled{background:#333;color:#fff}
.btn-submit.disabled{background:#ddd;color:#999}
.sheet-hint{text-align:center;margin-top:8px;font-size:11px;color:#bbb}

.spinner{width:16px;height:16px;border:2px solid #fff;border-top-color:transparent;border-radius:50%;animation:spin .6s linear infinite;display:inline-block}

.empty-cart{text-align:center;padding:60px 20px;color:#aaa}
.empty-cart .icon{font-size:44px;margin-bottom:10px}
.empty-cart .text{font-size:15px;color:#888}
.btn-secondary{margin-top:14px;padding:8px 20px;border-radius:8px;background:#f0f0f0;color:#666;font-size:13px}

.btn-primary{padding:10px 24px;border-radius:10px;background:#333;color:#fff;font-size:14px;font-weight:700}
.btn-full{width:100%;padding:13px;border-radius:10px;font-size:14px;font-weight:700;display:block;text-align:center}
.btn-dark-full{background:#333;color:#fff}
.btn-light-full{background:#f0f0f0;color:#999}

/* ── Payment method buttons ── */
.pay-method-btn{
  flex:1;padding:12px 8px;border-radius:10px;background:#fff;border:2px solid #eee;
  display:flex;flex-direction:column;align-items:center;gap:4px;transition:all .15s;
}
.pay-method-btn.active{border-color:#333;background:#fafafa}
.pay-method-btn:hover{border-color:#bbb}

/* ── Floating bar ── */
.floating-bar{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid #eee;padding:10px 20px;z-index:50;box-shadow:0 -2px 12px rgba(0,0,0,.05)}
.floating-bar-inner{max-width:1400px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}
.floating-count{font-size:11px;color:#999}
.floating-price{font-size:18px;font-weight:900}

@media(min-width:480px){.product-grid{grid-template-columns:repeat(3,1fr);gap:14px}}
@media(min-width:768px){.product-grid{grid-template-columns:repeat(4,1fr);gap:16px;padding:0 24px}}
@media(min-width:1024px){
  .product-grid{grid-template-columns:repeat(5,1fr);gap:18px;padding:0 32px}
  .detail-layout{flex-direction:row;gap:32px;align-items:flex-start}
  .detail-img-wrap{flex:0 0 45%;max-width:480px;position:sticky;top:80px}
  .detail-img-wrap img{border-radius:12px}
  .detail-info{padding:0;flex:1}
}
@media(min-width:1400px){.product-grid{grid-template-columns:repeat(6,1fr);padding:0 40px}}