*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--app-max-width: 480px;--color-primary: #ff5000;--color-primary-dark: #e64500;--color-bg: #f5f5f5;--color-surface: #ffffff;--color-text: #333333;--color-text-secondary: #999999;--color-border: #eeeeee;--color-danger: #ff4d4f;--color-success: #52c41a;--radius-sm: 6px;--radius-md: 12px;--shadow-card: 0 2px 12px rgba(0, 0, 0, .06);--header-height: 48px;--footer-height: 56px;--safe-bottom: env(safe-area-inset-bottom, 0px)}html{font-size:14px;-webkit-tap-highlight-color:transparent}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.5;min-height:100vh}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer;border:none;background:none}input,textarea{font:inherit;border:none;outline:none}img{display:block;max-width:100%}ul{list-style:none}.price{color:var(--color-primary);font-weight:600}.price-symbol{font-size:.85em}.price-original{color:var(--color-text-secondary);text-decoration:line-through;font-size:.85em;font-weight:400;margin-left:6px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:var(--radius-sm);font-weight:500;transition:opacity .2s,transform .1s}.btn:active{transform:scale(.98)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-outline{border:1px solid var(--color-primary);color:var(--color-primary);background:#fff}.tag{display:inline-block;padding:2px 6px;border-radius:4px;font-size:11px;line-height:1.4}.tag-hot{background:#fff0eb;color:var(--color-primary)}.tag-new{background:#e6f7ff;color:#1890ff}.tag-default{background:#f5f5f5;color:var(--color-text-secondary)}.app-shell{max-width:var(--app-max-width);margin:0 auto;min-height:100vh;background:var(--color-bg);position:relative}.page{padding-top:var(--header-height);padding-bottom:calc(var(--footer-height) + var(--safe-bottom) + 8px);min-height:100vh}.page-no-footer{padding-bottom:calc(var(--safe-bottom) + 8px)}.page-content{padding:12px}.header{position:fixed;top:0;left:0;right:0;height:var(--header-height);background:var(--color-surface);z-index:100;box-shadow:0 1px 0 var(--color-border)}.header-inner{max-width:var(--app-max-width);margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;padding:0 12px;gap:12px}.header-left{display:flex;align-items:center;gap:4px;min-width:0}.header-logo{font-size:18px;font-weight:700;color:var(--color-primary);white-space:nowrap}.header-back{width:32px;height:32px;display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--color-text);flex-shrink:0}.header-title{font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.header-nav{display:none;align-items:center;gap:24px}.header-nav-link{font-size:14px;color:var(--color-text);transition:color .2s}.header-nav-link:hover{color:var(--color-primary)}.header-nav-cart{position:relative;display:inline-flex;align-items:center;gap:4px}.header-nav-cart .cart-badge{position:static;transform:none}.header-cart,.header-cart-spacer{width:32px;height:32px;flex-shrink:0}.header-cart{position:relative;display:flex;align-items:center;justify-content:center}.header-cart svg{width:22px;height:22px}.cart-badge{position:absolute;top:0;right:-2px;min-width:16px;height:16px;padding:0 4px;background:var(--color-primary);color:#fff;font-size:10px;line-height:16px;text-align:center;border-radius:8px}.footer-nav{position:fixed;bottom:0;left:0;right:0;height:calc(var(--footer-height) + var(--safe-bottom));padding-bottom:var(--safe-bottom);background:var(--color-surface);box-shadow:0 -1px 0 var(--color-border);z-index:100}.footer-nav-inner{max-width:var(--app-max-width);margin:0 auto;height:var(--footer-height);display:flex}.footer-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:var(--color-text-secondary);font-size:11px}.footer-nav-item.active{color:var(--color-primary)}.footer-nav-item svg{width:22px;height:22px}.search-bar{display:flex;align-items:center;gap:8px;background:var(--color-surface);border-radius:20px;padding:8px 14px;margin-bottom:8px;color:var(--color-text-secondary);border:1px solid var(--color-border);transition:border-color .2s,box-shadow .2s}.search-bar:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 2px #ff50001a}.search-bar svg{width:16px;height:16px;flex-shrink:0}.search-bar input{flex:1;background:transparent;color:var(--color-text);min-width:0}.search-bar input::-webkit-search-cancel-button{display:none}.search-clear{width:22px;height:22px;border-radius:50%;background:#eee;color:var(--color-text-secondary);font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;flex-shrink:0}.search-clear:hover{background:#ddd}.search-meta{font-size:12px;color:var(--color-text-secondary);margin-bottom:10px}.search-meta[hidden],.search-empty[hidden]{display:none!important}.banner{border-radius:var(--radius-md);overflow:hidden;margin-bottom:12px;background:linear-gradient(135deg,#ff6a00,#ff5000);color:#fff;padding:20px 16px}.banner h2{font-size:18px;margin-bottom:4px}.banner p{font-size:12px;opacity:.9}.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.product-card{background:var(--color-surface);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-card)}.product-card-image{aspect-ratio:1;background:#f0f0f0;overflow:hidden;position:relative}.product-card-image img{width:100%;height:100%;object-fit:cover}.product-card-image .placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;color:#ffffffe6}.product-card-body{padding:8px 10px 10px}.product-card-name{font-size:13px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:36px;margin-bottom:6px}.product-card-tags{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:6px}.product-card-price{font-size:16px}.detail-gallery{background:var(--color-surface);aspect-ratio:1;overflow:hidden}.detail-gallery img{width:100%;height:100%;object-fit:cover}.detail-info{background:var(--color-surface);padding:16px;margin-top:8px}.detail-layout{padding:0 12px 12px}.detail-top{display:flex;flex-direction:column}.detail-section-inline{margin-top:16px}.detail-section-inline h3{border-bottom:none;padding-bottom:0;margin-bottom:8px}.detail-name{font-size:17px;font-weight:600;line-height:1.4;margin-bottom:8px}.detail-price-row{margin-bottom:12px}.detail-price-row .price{font-size:24px}.detail-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}.detail-section{background:var(--color-surface);padding:16px;margin-top:8px}.detail-section h3{font-size:15px;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--color-border)}.detail-desc{color:var(--color-text-secondary);font-size:13px;line-height:1.7}.spec-list{display:flex;flex-direction:column;gap:8px}.spec-item{display:flex;font-size:13px}.spec-label{width:72px;color:var(--color-text-secondary);flex-shrink:0}.spec-value{flex:1}.qty-selector{display:flex;align-items:center;gap:0;border:1px solid var(--color-border);border-radius:var(--radius-sm);overflow:hidden;width:fit-content}.qty-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:#fafafa;font-size:18px;color:var(--color-text)}.qty-btn:disabled{color:#ccc;cursor:not-allowed}.qty-value{width:44px;text-align:center;font-size:15px;border-left:1px solid var(--color-border);border-right:1px solid var(--color-border);line-height:36px}.detail-bar{position:fixed;bottom:0;left:0;right:0;padding:10px 12px calc(10px + var(--safe-bottom));background:var(--color-surface);box-shadow:0 -2px 10px #0000000f;z-index:100}.detail-bar-inner{max-width:var(--app-max-width);margin:0 auto;display:flex;gap:10px}.detail-bar .btn{flex:1;padding:12px;font-size:15px}.cart-list{display:flex;flex-direction:column;gap:10px}.cart-item{background:var(--color-surface);border-radius:var(--radius-md);padding:12px;display:flex;gap:10px;box-shadow:var(--shadow-card)}.cart-item-image{width:80px;height:80px;border-radius:var(--radius-sm);overflow:hidden;flex-shrink:0;background:#f0f0f0}.cart-item-image img{width:100%;height:100%;object-fit:cover}.cart-item-info{flex:1;display:flex;flex-direction:column;justify-content:space-between;min-width:0}.cart-item-name{font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.cart-item-bottom{display:flex;align-items:center;justify-content:space-between}.cart-item-remove{color:var(--color-text-secondary);font-size:12px;margin-top:4px}.cart-bar{position:fixed;bottom:calc(var(--footer-height) + var(--safe-bottom));left:0;right:0;padding:10px 12px;background:var(--color-surface);box-shadow:0 -2px 10px #0000000f;z-index:99}.cart-bar-inner{max-width:var(--app-max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between}.cart-bar .btn{padding:10px 28px}.checkout-form{background:var(--color-surface);border-radius:var(--radius-md);padding:16px;margin-bottom:10px}.checkout-form h3{font-size:15px;margin-bottom:12px}.form-group{margin-bottom:12px}.form-group label{display:block;font-size:13px;color:var(--color-text-secondary);margin-bottom:6px}.form-group input,.form-group textarea{width:100%;padding:10px 12px;background:#fafafa;border-radius:var(--radius-sm);border:1px solid var(--color-border)}.form-group textarea{resize:none;height:72px}.order-summary{background:var(--color-surface);border-radius:var(--radius-md);padding:16px}.order-summary h3{font-size:15px;margin-bottom:12px}.order-item{display:flex;justify-content:space-between;font-size:13px;margin-bottom:8px;color:var(--color-text-secondary)}.order-item span:last-child{color:var(--color-text)}.order-total{display:flex;justify-content:space-between;padding-top:12px;margin-top:8px;border-top:1px solid var(--color-border);font-size:15px;font-weight:600}.checkout-bar{position:fixed;bottom:0;left:0;right:0;padding:10px 12px calc(10px + var(--safe-bottom));background:var(--color-surface);box-shadow:0 -2px 10px #0000000f;z-index:100}.checkout-bar-inner{max-width:var(--app-max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between}.checkout-bar .btn{padding:12px 32px;font-size:15px}.empty-state{text-align:center;padding:60px 20px;color:var(--color-text-secondary)}.empty-state-icon{font-size:48px;margin-bottom:12px;opacity:.5}.empty-state p{margin-bottom:16px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px;animation:fadeIn .2s ease}.modal-box{background:var(--color-surface);border-radius:var(--radius-md);padding:24px 20px 16px;width:100%;max-width:320px;text-align:center;animation:slideUp .25s ease}.modal-box-payment{text-align:left;max-width:360px}.modal-box-payment .modal-title{text-align:center}.payment-amount{text-align:center;font-size:14px;color:var(--color-text-secondary);margin-bottom:16px}.payment-amount .price{font-size:22px;margin-left:4px}.payment-methods{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}.payment-method{display:flex;align-items:center;gap:12px;padding:14px 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;transition:border-color .2s,background .2s}.payment-method input{display:none}.payment-method.active{border-color:var(--color-primary);background:#fff8f5}.payment-method-icon{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:700;flex-shrink:0}.payment-icon-wechat{background:#07c160}.payment-icon-alipay{background:#1677ff}.payment-method-name{flex:1;font-size:15px;font-weight:500}.payment-method-check{width:20px;height:20px;border-radius:50%;border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;font-size:12px;color:transparent;flex-shrink:0}.payment-method.active .payment-method-check{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.payment-actions{display:flex;gap:10px}.payment-actions .btn{flex:1;padding:12px}.modal-icon{width:48px;height:48px;margin:0 auto 12px;background:#fff2f0;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px}.modal-title{font-size:17px;font-weight:600;margin-bottom:8px}.modal-message{color:var(--color-text-secondary);font-size:14px;margin-bottom:20px}.modal-actions .btn{width:100%;padding:12px}.toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#000000bf;color:#fff;padding:12px 24px;border-radius:var(--radius-sm);font-size:14px;z-index:2000;animation:fadeIn .2s ease;pointer-events:none}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.loading-spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite;margin-right:6px}@keyframes spin{to{transform:rotate(360deg)}}@media(min-width:768px){:root{--app-max-width: 1200px;--header-height: 56px}body{background:#e8e8e8}.app-shell{box-shadow:0 0 24px #00000014}.page{padding-bottom:24px}.page-content{padding:20px 24px}.footer-nav{display:none}.header-nav{display:flex;flex:1;justify-content:center}.header-cart,.header-cart-spacer{display:none}.header-inner{padding:0 24px}.header-logo{font-size:20px}.search-bar{max-width:560px;padding:10px 16px;margin-bottom:10px}.banner{padding:28px 24px;margin-bottom:20px}.banner h2{font-size:24px}.banner p{font-size:14px}.product-grid{grid-template-columns:repeat(4,1fr);gap:16px}.product-card-body{padding:12px 14px 14px}.product-card-name{font-size:14px;min-height:40px}.detail-layout{padding:0 24px 24px}.detail-top{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.detail-gallery{border-radius:var(--radius-md);max-height:480px}.detail-info{margin-top:0;border-radius:var(--radius-md);padding:24px}.detail-name{font-size:22px}.detail-bottom{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}.detail-bottom .detail-section{margin-top:0;border-radius:var(--radius-md)}.detail-bar-inner .btn{max-width:200px}.detail-bar-inner{justify-content:flex-end}.cart-bar{bottom:0;padding:12px 24px}.cart-item{padding:16px}.cart-item-image{width:100px;height:100px}.checkout-layout{display:grid;grid-template-columns:1fr 400px;gap:20px;align-items:start}.checkout-form,.order-summary{margin-bottom:0}.checkout-bar-inner .btn{min-width:160px}.empty-state{padding:80px 20px}}@media(min-width:1024px){.product-grid{grid-template-columns:repeat(5,1fr)}}@media(min-width:768px)and (max-width:1023px){.product-grid{grid-template-columns:repeat(3,1fr)}}