/* ===== 设计系统变量 ===== */
:root{
  --primary:#0a4d8c;--primary-light:#1a6fc4;--primary-dark:#06325e;
  --accent:#00b8a9;--accent-soft:#e6f7f5;
  --text:#1a1a1a;--text-soft:#5a6472;--text-mute:#8a93a3;
  --bg:#fff;--bg-soft:#f6f8fb;--border:#eaeef4;
  --price:#e74c3c;
  --shadow-sm:0 2px 8px rgba(16,42,80,.06);
  --shadow-md:0 8px 28px rgba(16,42,80,.10);
  --shadow-lg:0 16px 48px rgba(16,42,80,.14);
  --radius:14px;--maxw:1320px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--primary-light);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary)}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 40px}
/* ===== 顶部公告条 ===== */
.topbar{background:var(--primary-dark);color:rgba(255,255,255,.78);font-size:12.5px;padding:7px 0}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center}
.topbar a{color:rgba(255,255,255,.78)}
.topbar a:hover,.topbar a.on{color:#fff}
.topbar .tb-links{display:flex;gap:22px;align-items:center}
.cart-link{display:flex;align-items:center;gap:5px;position:relative}
.cart-badge{background:var(--accent);color:#fff;font-size:11px;min-width:18px;height:18px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;padding:0 5px;font-weight:700}
/* ===== 导航 ===== */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.header.scrolled{box-shadow:var(--shadow-md)}
.header .wrap{height:72px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px;cursor:pointer}
.brand-logo{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--primary-light),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:18px;box-shadow:0 4px 12px rgba(26,111,196,.35)}
.brand-text .b1{font-size:16px;font-weight:700;color:var(--text)}
.brand-text .b2{font-size:11.5px;color:var(--text-mute);letter-spacing:.5px}
.nav{display:flex;gap:6px}
.nav a{color:var(--text-soft);font-size:15px;padding:8px 16px;border-radius:8px;font-weight:500;transition:all .2s;position:relative;cursor:pointer}
.nav a:hover{color:var(--primary);background:var(--bg-soft)}
.nav a.active{color:var(--primary)}
.nav a.active::after{content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;background:var(--primary-light);border-radius:2px}
/* ===== 按钮 / 用户区 ===== */
.user-area{display:flex;align-items:center;gap:10px}
.btn{padding:9px 22px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:500;border:1px solid var(--primary-light);background:#fff;color:var(--primary-light);transition:all .2s;display:inline-flex;align-items:center;justify-content:center;gap:6px}
.btn:hover{background:var(--primary-light);color:#fff;box-shadow:0 6px 16px rgba(26,111,196,.3)}
.btn-primary{background:var(--primary-light);color:#fff;border-color:var(--primary-light)}
.btn-primary:hover{background:var(--primary);box-shadow:0 6px 16px rgba(26,111,196,.4)}
.btn-ghost{border-color:var(--border);color:var(--text-soft)}
.btn-ghost:hover{background:var(--bg-soft);color:var(--primary);box-shadow:none}
.user-chip{display:flex;align-items:center;gap:10px;padding:5px 6px 5px 14px;background:var(--bg-soft);border-radius:30px;font-size:14px}
.user-avatar{width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--primary-light),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.user-name{color:var(--text);font-weight:600;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-logout{width:30px;height:30px;border-radius:50%;border:none;cursor:pointer;background:transparent;color:var(--text-mute);transition:all .2s;display:flex;align-items:center;justify-content:center}
.user-logout:hover{background:#fff;color:var(--primary)}
.user-logout svg{width:16px;height:16px}
/* ===== 弹窗 / Toast ===== */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(6,28,50,.55);backdrop-filter:blur(4px);z-index:200;align-items:center;justify-content:center}
.modal-overlay.active{display:flex}
.modal{background:#fff;border-radius:18px;padding:36px;width:420px;max-width:92vw;position:relative;box-shadow:0 30px 80px rgba(0,0,0,.3);animation:modalIn .3s cubic-bezier(.2,.8,.2,1);max-height:92vh;overflow-y:auto}
@keyframes modalIn{from{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}
.modal .close{position:absolute;top:14px;right:18px;font-size:24px;cursor:pointer;color:var(--text-mute);border:none;background:none;line-height:1}
.modal .close:hover{color:var(--text)}
.modal h2{font-size:22px;margin-bottom:6px;text-align:center;font-weight:700}
.modal .m-sub{text-align:center;font-size:13px;color:var(--text-mute);margin-bottom:24px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:14px;margin-bottom:7px;color:var(--text-soft);font-weight:500}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:9px;font-size:14px;transition:all .2s;background:var(--bg-soft);font-family:inherit}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-light);background:#fff;box-shadow:0 0 0 3px rgba(26,111,196,.12)}
.form-error{color:var(--price);font-size:13px;margin-top:8px;display:none}
.modal .btn-primary{width:100%;padding:12px;margin-top:8px;font-size:15px}
.modal-switch{text-align:center;margin-top:18px;font-size:13.5px;color:var(--text-mute)}
.modal-switch a{cursor:pointer;font-weight:600}
.toast{position:fixed;top:24px;left:50%;transform:translateX(-50%) translateY(-20px);background:#fff;border-radius:12px;padding:14px 24px;box-shadow:var(--shadow-lg);font-size:14px;z-index:300;opacity:0;transition:all .3s;display:flex;align-items:center;gap:10px;border:1px solid var(--border)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast .ti{color:var(--accent);font-size:18px}
.toast.err .ti{color:var(--price)}
/* ===== 通用区块 ===== */
.section{padding:88px 0;scroll-margin-top:80px}
.section.alt{background:var(--bg-soft)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 56px}
.sec-eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:2px;color:var(--accent);text-transform:uppercase;margin-bottom:14px}
.sec-title{font-size:34px;font-weight:800;color:var(--text);margin-bottom:14px}
.sec-sub{font-size:16px;color:var(--text-soft)}
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:translateY(0)}
/* ===== 底部 ===== */
.footer{background:#0a1a2f;color:rgba(255,255,255,.7);padding:56px 0 26px;font-size:13.5px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .fb-logo{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .fb-logo .bl{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--primary-light),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:18px}
.footer-brand .fb-name{font-size:16px;font-weight:700;color:#fff}
.footer-brand p{font-size:13.5px;line-height:1.9;max-width:340px}
.footer-col h5{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col a{display:block;color:rgba(255,255,255,.7);font-size:13.5px;padding:5px 0;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{padding-top:24px;text-align:center;line-height:2}
.footer-bottom a{color:#8ec8f0}
.footer-bottom .sep{margin:0 12px;color:rgba(255,255,255,.3)}
/* ===== 页面通用头（协议等内页） ===== */
.page-head{background:linear-gradient(135deg,#062c52,#0a4d8c);color:#fff;padding:64px 0 56px;text-align:center}
.page-head h1{font-size:32px;font-weight:800;margin-bottom:10px}
.page-head .meta{font-size:13.5px;opacity:.8}
.doc-wrap{max-width:960px;margin:0 auto;padding:0 40px}
.back{display:inline-flex;align-items:center;gap:6px;margin:24px 0 18px;font-size:14px;color:var(--text-soft)}
.back:hover{color:var(--primary)}
.doc{background:#fff;border:1px solid var(--border);border-radius:14px;padding:48px 52px;margin-bottom:60px;box-shadow:0 8px 28px rgba(16,42,80,.06)}
.doc p.intro{font-size:15px;color:var(--text-soft);margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid var(--border)}
.doc h2{font-size:19px;color:var(--primary);margin:28px 0 12px;font-weight:700;display:flex;align-items:center;gap:10px}
.doc h2::before{content:"";width:4px;height:18px;background:linear-gradient(var(--primary-light),var(--accent));border-radius:2px}
.doc h3{font-size:16px;color:var(--text);margin:20px 0 10px;font-weight:700}
.doc p,.doc li{font-size:14.5px;color:var(--text-soft);margin-bottom:10px}
.doc ul,.doc ol{padding-left:24px;margin-bottom:12px}
.doc li{margin-bottom:8px}
.doc strong{color:var(--text)}
.doc .toc{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;padding:18px;background:var(--bg-soft);border-radius:10px}
.doc .toc a{font-size:13px;padding:5px 12px;border-radius:20px;background:#fff;border:1px solid var(--border);color:var(--text-soft)}
/* ===== 面包屑 ===== */
.breadcrumb{background:var(--bg-soft);padding:16px 0;font-size:13.5px;color:var(--text-mute)}
.breadcrumb a{color:var(--text-soft)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{margin:0 8px;color:var(--text-mute)}
.breadcrumb .cur{color:var(--text)}

/* ===== 商品卡片 ===== */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.prod-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .3s,box-shadow .3s,border-color .3s;cursor:pointer;display:flex;flex-direction:column;position:relative}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.prod-card.in-cart{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.prod-incart{position:absolute;top:10px;left:10px;z-index:2;background:var(--accent);color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:20px;box-shadow:0 4px 10px rgba(0,184,169,.35)}
.prod-cart-btn{margin-top:14px;width:100%;padding:8px 12px;font-size:13px}
.prod-img{height:200px;background:linear-gradient(135deg,#eef3fa,#e9f5f3);display:flex;align-items:center;justify-content:center;font-size:54px}
.prod-img svg{width:75%;height:75%}
.prod-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.prod-body h3{font-size:15px;font-weight:600;margin-bottom:8px;line-height:1.5;color:var(--text);min-height:46px}
.prod-merchant{font-size:12.5px;color:var(--accent);margin-bottom:8px;display:flex;align-items:center;gap:4px}
.prod-merchant::before{content:"🏪";font-size:13px}
.prod-price-row{display:flex;align-items:baseline;gap:8px;margin-bottom:8px}
.prod-price{font-size:20px;color:var(--price);font-weight:800}
.prod-price .unit{font-size:13px;font-weight:500}
.prod-meta{font-size:12.5px;color:var(--text-mute);margin-top:auto;display:flex;justify-content:space-between}
.prod-meta .sold{color:var(--text-mute)}
.prod-meta .rate{color:#f5a623}
/* ===== 商城分类卡（首页用） ===== */
.mall-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.mall-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:36px 30px;overflow:hidden;transition:transform .35s,box-shadow .35s,border-color .35s}
.mall-card::before{content:"";position:absolute;inset:0;opacity:0;transition:opacity .35s;background:linear-gradient(135deg,rgba(26,111,196,.06),rgba(0,184,169,.06))}
.mall-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent}
.mall-card:hover::before{opacity:1}
.mall-card>*{position:relative;z-index:1}
.mall-icon{width:60px;height:60px;border-radius:14px;margin-bottom:20px;display:flex;align-items:center;justify-content:center;font-size:28px;background:linear-gradient(135deg,#e8f1fb,#e6f7f5);transition:transform .35s}
.mall-card:hover .mall-icon{transform:scale(1.08) rotate(-4deg)}
.mall-card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.mall-card p{font-size:14.5px;color:var(--text-soft);margin-bottom:18px}
.mall-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-light)}
.mall-link .arr{transition:transform .25s}
.mall-card:hover .mall-link .arr{transform:translateX(5px)}
/* ===== 商品详情 ===== */
.pd-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.pd-gallery{background:linear-gradient(135deg,#eef3fa,#e9f5f3);border-radius:var(--radius);height:460px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.pd-gallery img{width:100%;height:100%;object-fit:cover;display:block}
.pd-info h1{font-size:26px;font-weight:800;margin-bottom:10px;line-height:1.4}
.pd-info .pd-sub{font-size:14.5px;color:var(--text-soft);margin-bottom:18px}
.pd-merchant-box{display:inline-flex;align-items:center;gap:8px;background:var(--accent-soft);color:#007a6e;padding:8px 16px;border-radius:8px;font-size:13.5px;font-weight:600;margin-bottom:18px}
.pd-merchant-box::before{content:"🏪";font-size:15px}
.pd-merchant-box .mid{color:var(--text-mute);font-weight:500;margin-left:4px}
.pd-price-box{background:linear-gradient(135deg,#fafbff,#f3f7fc);border:1px solid var(--border);border-radius:12px;padding:22px 24px;margin-bottom:22px}
.pd-price-box .lbl{font-size:13px;color:var(--text-mute);margin-bottom:4px}
.pd-price-box .now{font-size:32px;color:var(--price);font-weight:800}
.pd-price-box .now .unit{font-size:15px;font-weight:600}
.pd-price-box .was{font-size:14px;color:var(--text-mute);text-decoration:line-through;margin-left:10px}
.pd-price-box .tags{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.pd-price-box .tags span{font-size:12px;padding:3px 10px;border-radius:20px;background:#fff;border:1px solid var(--border);color:var(--text-soft)}
.pd-spec{width:100%;border-collapse:collapse;margin-bottom:20px}
.pd-spec td{padding:11px 14px;font-size:14px;border-bottom:1px solid var(--border)}
.pd-spec td:first-child{color:var(--text-mute);width:120px;background:var(--bg-soft)}
.pd-spec td:last-child{color:var(--text)}
.pd-promise{background:#fff8e6;border:1px solid #ffe0a0;border-radius:10px;padding:14px 18px;font-size:13.5px;color:#8a6d00;margin-bottom:22px}
.pd-cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.pd-cta .btn{padding:13px 30px;font-size:15px}
.pd-incart{margin-top:14px;font-size:13.5px;color:#007a6e;background:var(--accent-soft);padding:10px 16px;border-radius:8px}
.pd-section{margin-top:36px}
.pd-section h2{font-size:20px;font-weight:700;margin-bottom:16px;padding-left:12px;border-left:4px solid var(--primary-light)}
.pd-section ul{padding-left:24px}
.pd-section li{font-size:14.5px;color:var(--text-soft);margin-bottom:10px}
.pd-scenarios{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.pd-scenarios .sc{background:var(--bg-soft);border-radius:10px;padding:16px 20px;font-size:14px;color:var(--text-soft)}
.pd-scenarios .sc strong{color:var(--text);display:block;margin-bottom:4px}
/* ===== 购物车 ===== */
.cart-table{width:100%;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--border);border-collapse:collapse}
.cart-table th,.cart-table td{padding:20px 24px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--border)}
.cart-table thead th{background:var(--bg-soft);color:var(--text-mute);font-weight:600;font-size:13.5px}
.cart-prod{display:flex;align-items:center;gap:16px}
.cart-prod .ci{width:72px;height:64px;border-radius:10px;background:linear-gradient(135deg,#eef3fa,#e9f5f3);display:flex;align-items:center;justify-content:center;font-size:30px;flex-shrink:0;overflow:hidden}
.cart-prod .ci svg{width:100%;height:100%}
.cart-prod .cn h4{font-size:14.5px;font-weight:600;margin-bottom:4px}
.cart-prod .cn .cm{font-size:12.5px;color:var(--accent)}
.cart-prod .cn .cs{font-size:12.5px;color:var(--text-mute)}
.qty{display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:8px;overflow:hidden}
.qty button{width:32px;height:32px;border:none;background:var(--bg-soft);cursor:pointer;font-size:16px;color:var(--text-soft);transition:all .2s}
.qty button:hover{background:var(--primary-light);color:#fff}
.qty span{width:44px;text-align:center;font-size:14px;font-weight:600}
.cart-del{color:var(--text-mute);cursor:pointer;background:none;border:none;font-size:14px}
.cart-del:hover{color:var(--price)}
.cart-summary{display:flex;justify-content:flex-end;margin-top:24px}
.cart-summary-inner{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px 32px;width:340px;box-shadow:var(--shadow-md)}
.cart-summary-inner .row{display:flex;justify-content:space-between;font-size:14.5px;color:var(--text-soft);margin-bottom:12px}
.cart-summary-inner .total{font-size:20px;font-weight:800;color:var(--text);padding-top:14px;border-top:1px solid var(--border);margin-top:6px}
.cart-summary-inner .total .amt{color:var(--price);font-size:24px}
.cart-summary-inner .btn-primary{width:100%;margin-top:18px}
.cart-tip{background:#fff8e6;border:1px solid #ffe0a0;border-radius:10px;padding:14px 20px;font-size:13.5px;color:#8a6d00;margin-top:20px}
.empty-state{text-align:center;padding:80px 20px;color:var(--text-mute)}
.empty-state .ei{font-size:60px;margin-bottom:16px}
/* ===== 商家入驻 ===== */
.steps-flow{display:flex;justify-content:center;gap:0;margin-bottom:48px;flex-wrap:wrap}
.step-item{flex:1;min-width:180px;text-align:center;position:relative;padding:20px 10px}
.step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary-light),var(--accent));color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;margin-bottom:12px;box-shadow:0 6px 16px rgba(26,111,196,.3)}
.step-item h4{font-size:15px;font-weight:700;margin-bottom:6px}
.step-item p{font-size:13px;color:var(--text-mute)}
.step-item::after{content:"→";position:absolute;right:-8px;top:24px;color:#cfd8e3;font-size:20px}
.step-item:last-child::after{display:none}
.rule-list{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px 36px;box-shadow:var(--shadow-sm)}
.rule-list h3{font-size:18px;font-weight:700;margin-bottom:16px;color:var(--primary)}
.rule-list ul{padding-left:22px}
.rule-list li{font-size:14.5px;color:var(--text-soft);margin-bottom:12px;line-height:1.9}
.cat-req{background:var(--bg-soft);border-radius:12px;padding:24px 28px;margin-top:24px}
.cat-req h4{font-size:15px;font-weight:700;margin-bottom:12px;color:var(--text)}
.cat-req li{font-size:14px;color:var(--text-soft);margin-bottom:8px}
/* ===== 响应式 ===== */
@media(max-width:1024px){.hero .wrap{grid-template-columns:1fr}.publish-layout{grid-template-columns:1fr}.contact-grid{grid-template-columns:repeat(2,1fr)}.footer-top{grid-template-columns:1fr 1fr}.prod-grid{grid-template-columns:repeat(3,1fr)}.pd-layout{grid-template-columns:1fr}.mall-grid{grid-template-columns:1fr}}
@media(max-width:768px){.wrap{padding:0 18px}.nav{display:none}.svc-grid,.prod-grid,.mall-grid{grid-template-columns:1fr}.hero h1{font-size:32px}.hero-stats{gap:24px}.contact-grid{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr}.doc{padding:28px 22px}.page-head h1{font-size:24px}.pd-scenarios{grid-template-columns:1fr}.steps-flow{flex-direction:column}.step-item::after{display:none}.cart-table{font-size:13px}.cart-table th,.cart-table td{padding:14px 12px}.pd-gallery{height:300px}}