/* ===== 基础重置 ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#1a5276;
  --primary-light:#2980b9;
  --accent:#27ae60;
  --accent-light:#2ecc71;
  --gold:#f39c12;
  --dark:#1a1a2e;
  --gray-50:#f8f9fa;
  --gray-100:#f1f3f5;
  --gray-200:#e9ecef;
  --gray-400:#adb5bd;
  --gray-600:#6c757d;
  --gray-800:#343a40;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 8px rgba(0,0,0,.06);
  --shadow:0 4px 20px rgba(0,0,0,.08);
  --shadow-lg:0 12px 40px rgba(0,0,0,.12);
  --transition:all .3s cubic-bezier(.4,0,.2,1);
}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;color:var(--dark);background:var(--gray-50);line-height:1.6}
a{color:inherit;text-decoration:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}
input,textarea{font-family:inherit;font-size:14px}

/* ===== 顶部公告条 ===== */
.top-bar{background:linear-gradient(90deg,var(--primary),var(--accent));color:#fff;text-align:center;padding:6px 16px;font-size:13px;letter-spacing:1px}

/* ===== 导航 ===== */
.header{background:#fff;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}
.header-inner{max-width:1280px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;cursor:pointer;flex-shrink:0}
.logo-mark{width:42px;height:42px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;letter-spacing:-1px}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:17px;color:var(--dark)}
.logo-text small{font-size:11px;color:var(--gray-600);letter-spacing:.5px}
.nav-categories{display:flex;gap:4px;flex:1;overflow-x:auto;scrollbar-width:none}
.nav-categories::-webkit-scrollbar{display:none}
.nav-cat{padding:8px 14px;border-radius:20px;font-size:14px;color:var(--gray-600);white-space:nowrap;transition:var(--transition)}
.nav-cat:hover{background:var(--gray-100);color:var(--dark)}
.nav-cat.active{background:var(--primary);color:#fff}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-box{display:flex;align-items:center;gap:8px;background:var(--gray-100);border-radius:24px;padding:8px 16px;width:220px;transition:var(--transition)}
.search-box:focus-within{background:#fff;box-shadow:0 0 0 2px var(--primary-light);width:260px}
.search-box svg{color:var(--gray-400);flex-shrink:0}
.search-box input{border:none;background:none;outline:none;width:100%;font-size:14px;color:var(--dark)}
.cart-btn{position:relative;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--dark);transition:var(--transition)}
.cart-btn:hover{background:var(--gray-100)}
.cart-badge{position:absolute;top:2px;right:2px;background:#e74c3c;color:#fff;font-size:11px;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 4px}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#0c2e4a 0%,#1a5276 40%,#1e6b5a 100%)}
.hero-bg{position:absolute;inset:0;opacity:.1;background-image:radial-gradient(circle at 20% 50%,rgba(255,255,255,.3) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(46,204,113,.4) 0%,transparent 40%)}
.hero-inner{max-width:1280px;margin:0 auto;padding:60px 24px;display:flex;align-items:center;gap:40px;position:relative;min-height:420px}
.hero-content{flex:1;color:#fff;z-index:1}
.hero-tag{display:inline-block;background:rgba(255,255,255,.15);backdrop-filter:blur(10px);padding:6px 16px;border-radius:20px;font-size:13px;margin-bottom:20px;letter-spacing:1px}
.hero-content h1{font-size:44px;font-weight:800;line-height:1.2;margin-bottom:16px}
.hero-highlight{background:linear-gradient(90deg,#f39c12,#f1c40f);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content p{font-size:16px;opacity:.85;margin-bottom:28px;line-height:1.8}
.hero-actions{display:flex;gap:12px;margin-bottom:36px}
.hero-stats{display:flex;gap:32px}
.stat{display:flex;flex-direction:column}
.stat strong{font-size:28px;font-weight:800;color:var(--gold)}
.stat span{font-size:13px;opacity:.7}
.hero-visual{flex:1;position:relative;height:380px}
.hero-product{position:absolute;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lg);background:#fff}
.hero-product img{width:100%;height:100%;object-fit:cover}
.main-product{width:260px;height:260px;top:50%;left:50%;transform:translate(-50%,-50%);z-index:2;animation:float 4s ease-in-out infinite}
.sub-product-1{width:140px;height:140px;top:10%;left:5%;z-index:1;animation:float 5s ease-in-out infinite .5s}
.sub-product-2{width:120px;height:120px;bottom:10%;right:8%;z-index:1;animation:float 4.5s ease-in-out infinite 1s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.main-product{animation:floatMain 4s ease-in-out infinite}
@keyframes floatMain{0%,100%{transform:translate(-50%,calc(-50% + 0))}50%{transform:translate(-50%,calc(-50% - 12px))}}
.hero-float-badge{position:absolute;bottom:15%;left:0;background:#fff;border-radius:14px;padding:12px 18px;display:flex;align-items:center;gap:10px;box-shadow:var(--shadow-lg);z-index:3;animation:float 3s ease-in-out infinite}
.badge-icon{font-size:28px}
.hero-float-badge strong{display:block;font-size:14px;color:var(--dark)}
.hero-float-badge small{font-size:11px;color:var(--gray-600)}

/* ===== 特色服务条 ===== */
.features-strip{background:#fff;border-bottom:1px solid var(--gray-200)}
.features-inner{max-width:1280px;margin:0 auto;padding:24px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.feature-item{display:flex;align-items:center;gap:12px;padding:8px}
.feature-icon{font-size:28px}
.feature-item strong{display:block;font-size:14px;color:var(--dark)}
.feature-item small{font-size:12px;color:var(--gray-600)}

/* ===== 通用区块 ===== */
.section{max-width:1280px;margin:0 auto;padding:48px 24px}
.section-header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:28px}
.section-tag{display:inline-block;font-size:12px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:2px;margin-bottom:6px}
.section-header h2{font-size:28px;font-weight:700;color:var(--dark)}
.product-count{font-size:14px;color:var(--gray-600)}
.btn-link{color:var(--primary);font-size:14px;font-weight:600;padding:8px 0}
.btn-link:hover{color:var(--primary-light)}

/* ===== 精选推荐 ===== */
.section-featured{background:#fff;border-radius:var(--radius);margin-top:-30px;position:relative;z-index:10;box-shadow:var(--shadow)}
.featured-scroll{display:flex;gap:16px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin}
.featured-scroll::-webkit-scrollbar{height:6px}
.featured-scroll::-webkit-scrollbar-thumb{background:var(--gray-200);border-radius:3px}
.featured-card{flex-shrink:0;width:220px;background:var(--gray-50);border-radius:var(--radius-sm);overflow:hidden;transition:var(--transition);cursor:pointer;border:1px solid var(--gray-200)}
.featured-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.featured-card .fc-img{width:100%;height:160px;object-fit:cover;background:#fff}
.featured-card .fc-info{padding:12px}
.featured-card .fc-cat{font-size:11px;color:var(--accent);font-weight:600;margin-bottom:4px}
.featured-card .fc-name{font-size:13px;font-weight:600;color:var(--dark);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:36px}
.featured-card .fc-price{font-size:16px;font-weight:700;color:var(--primary)}

/* ===== 分类网格 ===== */
.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:16px}
.category-card{background:#fff;border-radius:var(--radius-sm);padding:24px 16px;text-align:center;cursor:pointer;transition:var(--transition);border:1px solid var(--gray-200)}
.category-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary-light)}
.category-icon{font-size:36px;margin-bottom:10px}
.category-name{font-size:14px;font-weight:600;color:var(--dark)}
.category-count{font-size:12px;color:var(--gray-600);margin-top:4px}

/* ===== 商品网格 ===== */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
.product-card{background:#fff;border-radius:var(--radius);overflow:hidden;transition:var(--transition);cursor:pointer;border:1px solid var(--gray-200);display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.product-image-wrap{position:relative;aspect-ratio:1;overflow:hidden;background:var(--gray-100)}
.product-image-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.product-card:hover .product-image-wrap img{transform:scale(1.08)}
.product-badge{position:absolute;top:10px;left:10px;background:var(--gold);color:#fff;font-size:11px;font-weight:700;padding:4px 10px;border-radius:12px}
.product-info{padding:16px;flex:1;display:flex;flex-direction:column}
.product-cat{font-size:11px;color:var(--accent);font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}
.product-name{font-size:14px;font-weight:600;color:var(--dark);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.product-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:auto}
.product-price{font-size:18px;font-weight:800;color:var(--primary)}
.product-price small{font-size:11px;font-weight:400;color:var(--gray-600)}
.add-cart-btn{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;transition:var(--transition);flex-shrink:0}
.add-cart-btn:hover{background:var(--accent);transform:scale(1.1)}

/* ===== 空状态 ===== */
.empty-state{text-align:center;padding:60px 20px}
.empty-icon{font-size:48px;margin-bottom:16px}
.empty-state p{color:var(--gray-600);margin-bottom:16px}

/* ===== 按钮 ===== */
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;padding:12px 28px;border-radius:28px;font-size:15px;font-weight:600;transition:var(--transition);display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(26,82,118,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-outline{border:2px solid var(--gray-200);color:var(--dark);padding:10px 24px;border-radius:28px;font-size:14px;font-weight:600;transition:var(--transition)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-lg{padding:14px 32px;font-size:16px}
.btn-block{width:100%}

/* ===== 结算页 ===== */
.checkout-container{max-width:1000px;margin:0 auto;padding:40px 24px}
.back-btn{color:var(--gray-600);font-size:14px;margin-bottom:20px;display:inline-flex;align-items:center;gap:4px}
.back-btn:hover{color:var(--primary)}
.checkout-container h2{font-size:28px;margin-bottom:24px}
.checkout-grid{display:grid;grid-template-columns:1fr 360px;gap:24px;align-items:start}
.form-card{background:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}
.form-card h3{font-size:18px;margin-bottom:20px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--gray-800);margin-bottom:6px}
.form-group input,.form-group textarea{width:100%;padding:12px 16px;border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);outline:none;transition:var(--transition);background:var(--gray-50)}
.form-group input:focus,.form-group textarea:focus{border-color:var(--primary-light);background:#fff}
.pickup-notice{background:linear-gradient(135deg,#e8f5e9,#f1f8e9);border-radius:var(--radius-sm);padding:20px;margin-top:16px;border-left:4px solid var(--accent)}
.pickup-notice strong{display:block;margin-bottom:6px;color:var(--accent)}
.pickup-notice p{font-size:13px;color:var(--gray-600)}
.checkout-summary{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);position:sticky;top:100px}
.checkout-summary h3{font-size:18px;margin-bottom:16px}
.checkout-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--gray-100)}
.checkout-item img{width:56px;height:56px;border-radius:8px;object-fit:cover}
.checkout-item-info{flex:1}
.checkout-item-name{font-size:13px;font-weight:600;margin-bottom:4px}
.checkout-item-price{font-size:13px;color:var(--gray-600)}
.checkout-item-qty{font-size:12px;color:var(--gray-400)}
.summary-total{display:flex;justify-content:space-between;align-items:center;padding:16px 0;border-top:2px solid var(--gray-200);margin-top:12px;margin-bottom:16px}
.summary-total span{font-size:16px;font-weight:600}
.total-price{font-size:22px;font-weight:800;color:var(--primary)}

/* ===== 成功页 ===== */
.success-container{max-width:560px;margin:0 auto;padding:60px 24px}
.success-card{background:#fff;border-radius:var(--radius);padding:48px;text-align:center;box-shadow:var(--shadow)}
.success-icon{width:72px;height:72px;background:linear-gradient(135deg,var(--accent),var(--accent-light));color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:36px;font-weight:700;margin:0 auto 24px}
.success-card h2{font-size:24px;margin-bottom:8px}
.success-order-no{color:var(--gray-600);margin-bottom:24px;font-size:14px}
.success-order-no span{font-weight:700;color:var(--primary);font-family:monospace}
.success-info{background:var(--gray-50);border-radius:var(--radius-sm);padding:20px;margin-bottom:24px;text-align:left}
.info-row{display:flex;justify-content:space-between;padding:8px 0;font-size:14px}
.info-row span{color:var(--gray-600)}
.success-notice{background:#fff8e1;border-radius:var(--radius-sm);padding:16px;margin-bottom:24px;text-align:left}
.success-notice p{font-size:13px;color:var(--gray-800);margin-bottom:4px}

/* ===== 商品详情弹窗 ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);z-index:200;display:none;align-items:center;justify-content:center;padding:20px}
.modal-overlay.active{display:flex}
.product-modal{background:#fff;border-radius:var(--radius);max-width:800px;width:100%;max-height:90vh;overflow:auto;position:relative;animation:modalIn .3s ease}
@keyframes modalIn{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}
.modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;background:var(--gray-100);font-size:20px;color:var(--gray-600);z-index:1;display:flex;align-items:center;justify-content:center;transition:var(--transition)}
.modal-close:hover{background:var(--gray-200);color:var(--dark)}
.product-modal-content{display:grid;grid-template-columns:1fr 1fr;min-height:400px}
.product-modal-image{background:var(--gray-100);display:flex;align-items:center;justify-content:center;padding:24px}
.product-modal-image img{max-width:100%;max-height:400px;object-fit:contain;border-radius:var(--radius-sm)}
.product-modal-info{padding:32px;display:flex;flex-direction:column}
.product-category{display:inline-block;font-size:12px;font-weight:600;color:var(--accent);background:#e8f5e9;padding:4px 12px;border-radius:12px;margin-bottom:12px;width:fit-content}
.product-modal-info h2{font-size:22px;margin-bottom:8px}
.product-brand{font-size:14px;color:var(--gray-600);margin-bottom:16px}
.product-price-row{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.product-price{font-size:28px;font-weight:800;color:var(--primary)}
.product-stock{font-size:13px;color:var(--accent);background:#e8f5e9;padding:4px 10px;border-radius:8px}
.product-desc{font-size:14px;color:var(--gray-600);line-height:1.7;margin-bottom:24px;flex:1}
.qty-selector{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.qty-selector button{width:40px;height:40px;border-radius:50%;background:var(--gray-100);font-size:20px;color:var(--dark);transition:var(--transition)}
.qty-selector button:hover{background:var(--gray-200)}
.qty-selector span{font-size:18px;font-weight:700;min-width:30px;text-align:center}

/* ===== 购物车侧边栏 ===== */
.cart-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:150;opacity:0;visibility:hidden;transition:var(--transition)}
.cart-overlay.active{opacity:1;visibility:visible}
.cart-sidebar{position:fixed;top:0;right:0;width:400px;max-width:90vw;height:100vh;background:#fff;z-index:160;transform:translateX(100%);transition:transform .35s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column}
.cart-sidebar.active{transform:translateX(0)}
.cart-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--gray-200)}
.cart-header h3{font-size:18px}
.cart-items{flex:1;overflow-y:auto;padding:16px 24px}
.cart-item{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--gray-100)}
.cart-item img{width:64px;height:64px;border-radius:10px;object-fit:cover;flex-shrink:0}
.cart-item-info{flex:1;min-width:0}
.cart-item-name{font-size:13px;font-weight:600;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cart-item-price{font-size:14px;font-weight:700;color:var(--primary)}
.cart-item-controls{display:flex;align-items:center;gap:8px;margin-top:6px}
.cart-item-controls button{width:24px;height:24px;border-radius:50%;background:var(--gray-100);font-size:14px;display:flex;align-items:center;justify-content:center}
.cart-item-controls span{font-size:13px;font-weight:600;min-width:20px;text-align:center}
.cart-item-remove{color:var(--gray-400);font-size:12px;margin-left:auto;align-self:flex-start}
.cart-item-remove:hover{color:#e74c3c}
.cart-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--gray-600)}
.cart-empty .empty-icon{font-size:48px}
.cart-footer{padding:20px 24px;border-top:1px solid var(--gray-200)}
.cart-total{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.cart-total span{font-size:15px;font-weight:600}

/* ===== Toast ===== */
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(100px);background:var(--dark);color:#fff;padding:14px 28px;border-radius:30px;font-size:14px;z-index:300;opacity:0;transition:var(--transition);box-shadow:var(--shadow-lg)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== 页脚 ===== */
.footer{background:var(--dark);color:rgba(255,255,255,.7);margin-top:60px}
.footer-inner{max-width:1280px;margin:0 auto;padding:48px 24px 32px;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .logo-mark{width:40px;height:40px}
.footer-brand strong{display:block;color:#fff;font-size:15px}
.footer-brand small{font-size:11px;opacity:.6}
.footer-desc{font-size:13px;line-height:1.7;opacity:.6}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{list-style:none}
.footer-col li{font-size:13px;padding:6px 0;opacity:.6;cursor:pointer;transition:var(--transition)}
.footer-col li:hover{opacity:1;color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 24px;text-align:center;font-size:12px;opacity:.5}

/* ===== 视图切换 ===== */
.view{display:none}
.view.active{display:block}

/* ===== 响应式 ===== */
@media(max-width:900px){
  .hero-inner{flex-direction:column;text-align:center;padding:40px 24px}
  .hero-content h1{font-size:32px}
  .hero-visual{display:none}
  .hero-stats{justify-content:center}
  .features-inner{grid-template-columns:repeat(2,1fr)}
  .checkout-grid{grid-template-columns:1fr}
  .product-modal-content{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:24px}
  .nav-categories{display:none}
  .search-box{width:160px}
}
@media(max-width:600px){
  .header-inner{padding:0 16px;gap:12px}
  .search-box{display:none}
  .hero-content h1{font-size:26px}
  .section{padding:32px 16px}
  .product-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .features-inner{grid-template-columns:1fr 1fr}
  .featured-card{width:180px}
}