/* ============================================================
   上海瑟夫科技产品官网 · EDI 办公设备商城站
   原创样式表 —— 未使用任何第三方素材 / 字体 / 图标库
   ============================================================ */
:root{
  --brand:#14508c; --brand-2:#1d6bb8; --brand-d:#0d3a67; --brand-soft:#eaf1fa;
  --accent:#ef7d1a; --accent-soft:#fff3e6;
  --ink:#16202f; --ink-2:#3d4b60; --muted:#6c7b91;
  --line:#e4e9f2; --bg:#f4f6fb; --white:#fff;
  --ok:#0f8a5f; --danger:#c0392b;
  --r:10px; --r-lg:14px;
  --sh:0 1px 2px rgba(22,32,47,.06),0 6px 20px rgba(22,32,47,.06);
  --sh-lg:0 10px 34px rgba(22,32,47,.12);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:14px;line-height:1.7;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;border:0}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.4}
p{margin:0 0 10px}
ul{margin:0 0 10px;padding-left:20px}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:14px}
.wrap{max-width:1200px;margin:0 auto;padding:0 16px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-d);color:#c9d8ec;font-size:12px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:34px;gap:12px}
.topbar a{color:#c9d8ec}
.topbar a:hover{color:#fff}
.topbar .tb-right{display:flex;gap:14px;align-items:center;flex-shrink:0}
.topbar .sep{opacity:.4}

/* ---------- 主头部 ---------- */
.mainbar{background:var(--white);border-bottom:1px solid var(--line)}
.mainbar .wrap{display:flex;align-items:center;gap:18px;padding-top:16px;padding-bottom:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:-.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{
  font-size:19px;font-weight:700;color:var(--brand-d);letter-spacing:.2px;white-space:nowrap;
}
.brand-name.icp-name{font-size:19px}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.4px;white-space:nowrap}

.searchbar{flex:1;min-width:240px;display:flex;max-width:520px}
.searchbar input{
  flex:1;border:2px solid var(--brand);border-right:0;border-radius:6px 0 0 6px;
  padding:9px 12px;outline:none;background:#fff;color:var(--ink);
}
.searchbar input::placeholder{color:#9aa7b8}
.searchbar button{
  background:var(--brand);color:#fff;border:2px solid var(--brand);border-radius:0 6px 6px 0;
  padding:0 22px;font-size:14px;font-weight:500;
}
.searchbar button:hover{background:var(--brand-d);border-color:var(--brand-d)}

.mainbar-right{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}
.icon-btn{
  display:flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;
  border-radius:8px;padding:8px 13px;color:var(--ink-2);font-size:13px;position:relative;
}
.icon-btn:hover{border-color:var(--brand-2);color:var(--brand)}
.icon-btn .cnt{
  position:absolute;top:-7px;right:-7px;background:var(--accent);color:#fff;
  font-size:11px;border-radius:9px;min-width:17px;height:17px;line-height:17px;
  text-align:center;padding:0 4px;
}
.btn-join{
  background:var(--accent);color:#fff;border:0;border-radius:8px;
  padding:9px 16px;font-size:13px;font-weight:500;
}
.btn-join:hover{background:#d96c0c}

/* ---------- 主导航 ---------- */
.mainnav{background:var(--brand);color:#fff;position:sticky;top:0;z-index:60;box-shadow:0 2px 10px rgba(13,58,103,.18)}
.mainnav .wrap{display:flex;align-items:center;gap:2px;height:46px;overflow-x:auto}
.mainnav a{
  padding:0 16px;height:46px;display:flex;align-items:center;font-size:14px;
  color:#dbe7f5;white-space:nowrap;border-bottom:3px solid transparent;
}
.mainnav a:hover{background:rgba(255,255,255,.09);color:#fff}
.mainnav a.on{color:#fff;font-weight:600;border-bottom-color:var(--accent);background:rgba(255,255,255,.06)}

/* ---------- 通用 ---------- */
.section{margin:26px 0}
.sec-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:12px}
.sec-head h2{font-size:19px;color:var(--brand-d);display:flex;align-items:center;gap:9px}
.sec-head h2::before{content:"";width:4px;height:19px;border-radius:2px;background:var(--accent)}
.sec-head .more{font-size:13px;color:var(--muted)}
.sec-head .more:hover{color:var(--brand)}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh)}
.pad{padding:20px}
.muted{color:var(--muted)}
.small{font-size:12px}
.center{text-align:center}
.mt16{margin-top:16px}.mt24{margin-top:24px}.mb16{margin-bottom:16px}
.flex{display:flex;gap:12px;align-items:center}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border-radius:8px;padding:10px 20px;font-size:14px;border:1px solid transparent;
  cursor:pointer;font-weight:500;transition:.15s;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#d96c0c}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-2)}
.btn-ghost:hover{border-color:var(--brand-2);color:var(--brand)}
.btn-block{width:100%}
.btn-lg{padding:13px 34px;font-size:15px}
.btn-sm{padding:6px 13px;font-size:12.5px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ---------- 表单 ---------- */
.form-row{margin-bottom:15px}
.form-row label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px}
.form-row label .req{color:var(--danger);margin-left:2px}
.input,select.input,textarea.input{
  width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;
  background:#fff;outline:none;color:var(--ink);
}
.input:focus{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(29,107,184,.12)}
textarea.input{resize:vertical;min-height:96px}
.err{color:var(--danger);font-size:12px;margin-top:5px;display:none}
.err.show{display:block}
.checkbox{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:var(--ink-2)}

/* ---------- 商品卡 ---------- */
.goods-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  display:flex;flex-direction:column;transition:.18s;
}
.goods-card:hover{border-color:#b9d0ea;box-shadow:var(--sh-lg);transform:translateY(-2px)}
.goods-card .thumb{aspect-ratio:4/3;background:#eef2f8;overflow:hidden}
.goods-card .thumb img{width:100%;height:100%;object-fit:cover}
.goods-card .info{padding:12px 13px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.goods-card .gname{font-size:13.5px;line-height:1.5;height:42px;overflow:hidden;color:var(--ink)}
.goods-card:hover .gname{color:var(--brand)}
.goods-card .shop-line{font-size:12px;color:var(--muted)}
.price{color:var(--danger);font-weight:700;font-size:17px}
.price small{font-size:12px;font-weight:500}
.price-old{color:#a8b3c2;text-decoration:line-through;font-size:12px;margin-left:6px}
.tagline{display:flex;gap:6px;flex-wrap:wrap}
.tag{background:var(--brand-soft);color:var(--brand);border-radius:4px;padding:1px 7px;font-size:11px;display:inline-block}
.tag.acc{background:var(--accent-soft);color:#b25c06}
.tag.ok{background:#e8f6f0;color:var(--ok)}

/* ---------- 店铺卡 ---------- */
.shop-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:.18s;display:flex;flex-direction:column}
.shop-card:hover{border-color:#b9d0ea;box-shadow:var(--sh-lg);transform:translateY(-2px)}
.shop-card .cover{height:88px;position:relative}
.shop-card .cover img{width:100%;height:100%;object-fit:cover}
.shop-card .body{padding:0 16px 16px;margin-top:-26px;display:flex;flex-direction:column;gap:8px;flex:1}
.shop-avatar{
  width:54px;height:54px;border-radius:12px;border:3px solid #fff;overflow:hidden;
  background:#fff;box-shadow:var(--sh);
}
.shop-avatar img{width:100%;height:100%;object-fit:cover}
.shop-card .sname{font-size:15px;font-weight:600}
.shop-card .sname:hover{color:var(--brand)}
.shop-card .meta{font-size:12px;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap}
.shop-card .sdesc{font-size:12.5px;color:var(--ink-2);line-height:1.6;min-height:40px}

/* 评分 */
.stars{color:var(--accent);font-size:12px;letter-spacing:1px}

/* ---------- 面包屑 ---------- */
.crumb{font-size:12.5px;color:var(--muted);padding:14px 0 0}
.crumb a:hover{color:var(--brand)}
.crumb .sp{margin:0 6px;opacity:.5}

/* ---------- 筛选栏 ---------- */
.filterbar{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:14px 18px;margin-top:14px}
.filter-row{display:flex;gap:12px;padding:7px 0;border-bottom:1px dashed var(--line);align-items:baseline;flex-wrap:wrap}
.filter-row:last-child{border-bottom:0}
.filter-row .fl{font-size:13px;color:var(--muted);width:74px;flex-shrink:0}
.filter-row .fv{display:flex;gap:6px;flex-wrap:wrap;flex:1}
.filter-row .fv a{font-size:13px;color:var(--ink-2);padding:3px 11px;border-radius:5px}
.filter-row .fv a:hover{background:var(--brand-soft);color:var(--brand)}
.filter-row .fv a.on{background:var(--brand);color:#fff}
.sortbar{display:flex;gap:8px;align-items:center;padding:12px 0;flex-wrap:wrap}
.sortbar a{font-size:13px;padding:6px 14px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink-2)}
.sortbar a.on{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}

/* ---------- 分页 ---------- */
.pager{display:flex;gap:7px;justify-content:center;margin:24px 0;flex-wrap:wrap}
.pager a,.pager span{
  min-width:34px;height:34px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:7px;background:#fff;font-size:13px;color:var(--ink-2);padding:0 10px;
}
.pager a:hover{border-color:var(--brand-2);color:var(--brand)}
.pager .on{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- 详情页 ---------- */
.detail-top{display:grid;grid-template-columns:420px 1fr;gap:28px}
.gallery{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff}
.gallery .main-img{aspect-ratio:4/3;background:#ffffff;display:flex;align-items:center;justify-content:center}
.gallery .main-img img{width:100%;height:100%;object-fit:contain}
.gallery .thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:8px}
.gallery .thumbs button{padding:0;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:none;aspect-ratio:1/1}
.gallery .thumbs button.on{border-color:var(--brand);box-shadow:0 0 0 2px rgba(20,80,140,.18)}
.gallery .thumbs img{width:100%;height:100%;object-fit:contain;background:#fff}
.dtitle{font-size:22px;line-height:1.45;color:var(--ink);font-weight:600}
.pricebox{background:linear-gradient(90deg,#fff5ea,#fffaf4);border:1px solid #f5dfc4;border-radius:var(--r);padding:14px 18px;margin:14px 0}
.pricebox .big{font-size:30px;color:var(--danger);font-weight:700}
.pricebox .big small{font-size:15px}
.kv{display:flex;gap:10px;font-size:13px;color:var(--ink-2);padding:4px 0;flex-wrap:wrap}
.kv .k{color:var(--muted);width:74px;flex-shrink:0}
.buyrow{display:flex;gap:12px;margin-top:18px;flex-wrap:wrap}
.spec-table{width:100%;border-collapse:collapse;font-size:13.5px}
.spec-table td{border:1px solid var(--line);padding:9px 13px}
.spec-table td:first-child{background:#f8fafd;color:var(--muted);width:150px}

/* ---------- 侧栏 ---------- */
.side{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:18px}
.side h3{font-size:15px;margin-bottom:12px;color:var(--brand-d)}
.side ul{list-style:none;padding:0;margin:0}
.side li{padding:7px 0;border-bottom:1px dashed var(--line);font-size:13px}
.side li:last-child{border-bottom:0}
.side li a:hover{color:var(--brand)}
.side-nav{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.side-nav a{display:block;padding:12px 18px;font-size:14px;color:var(--ink-2);border-left:3px solid transparent}
.side-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.side-nav a.on{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);font-weight:600}

/* 布局：内容+侧栏 */
.layout{display:grid;grid-template-columns:1fr 280px;gap:22px;align-items:start;margin-top:18px}
.layout-left{display:grid;grid-template-columns:200px 1fr;gap:22px;align-items:start;margin-top:18px}

/* ---------- 表格 ---------- */
.table{width:100%;border-collapse:collapse;background:#fff;font-size:13.5px}
.table th{background:#f7f9fc;text-align:left;padding:12px 14px;font-weight:600;color:var(--ink-2);border-bottom:1px solid var(--line);white-space:nowrap}
.table td{padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:middle}
.table tr:hover td{background:#fafcfe}
.status{font-size:12px;padding:2px 9px;border-radius:11px;display:inline-block;white-space:nowrap}
.st-wait{background:#fff3e0;color:#b25c06}
.st-ok{background:#e8f6f0;color:var(--ok)}
.st-bad{background:#fdecea;color:var(--danger)}
.st-info{background:var(--brand-soft);color:var(--brand)}

/* ---------- 空状态 ---------- */
.empty{text-align:center;padding:56px 20px;color:var(--muted)}
.empty .big{font-size:15px;color:var(--ink-2);margin-bottom:8px}

/* ---------- 悬浮客服 ---------- */
.cs-fab{
  position:fixed;right:20px;bottom:22px;z-index:200;display:flex;flex-direction:column;gap:10px;
}
.cs-fab .fab{
  width:52px;height:52px;border-radius:15px;border:0;color:#fff;font-size:12px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;
  box-shadow:var(--sh-lg);font-weight:500;line-height:1.15;
}
.cs-fab .fab.main{background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.cs-fab .fab.top{background:#7b8aa0}
.cs-fab .fab:hover{filter:brightness(1.08)}
.cs-fab .fab .ic{font-size:17px}
.cs-panel{
  position:fixed;right:20px;bottom:86px;width:346px;max-width:calc(100vw - 32px);
  background:#fff;border-radius:16px;box-shadow:0 18px 50px rgba(16,30,50,.24);
  border:1px solid var(--line);z-index:201;display:none;overflow:hidden;
}
.cs-panel.open{display:block;animation:csIn .18s ease-out}
@keyframes csIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.cs-head{position:relative;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;padding:14px 16px}
.cs-head .t{font-size:14.5px;font-weight:600}
.cs-head .s{font-size:11.5px;opacity:.88}
.cs-body{height:300px;overflow-y:auto;padding:14px;background:#f7f9fc}
.msg{max-width:82%;padding:9px 12px;border-radius:12px;font-size:13px;margin-bottom:10px;line-height:1.6;word-break:break-word}
.msg.bot{background:#fff;border:1px solid var(--line);border-radius:12px 12px 12px 3px}
.msg.me{background:var(--brand);color:#fff;margin-left:auto;border-radius:12px 12px 3px 12px}
.cs-quick{display:flex;gap:6px;flex-wrap:wrap;padding:10px 14px 0;background:#fff;border-top:1px solid var(--line)}
.cs-quick button{font-size:12px;border:1px solid var(--line);background:#f8fafd;border-radius:14px;padding:4px 11px;color:var(--ink-2)}
.cs-quick button:hover{border-color:var(--brand-2);color:var(--brand)}
.cs-input{display:flex;gap:8px;padding:10px 14px 14px;background:#fff}
.cs-input input{flex:1;border:1px solid var(--line);border-radius:8px;padding:9px 11px;outline:none}
.cs-input input:focus{border-color:var(--brand-2)}

/* ---------- 弹层 ---------- */
.modal{position:fixed;inset:0;background:rgba(14,26,42,.5);z-index:300;display:none;align-items:center;justify-content:center;padding:20px}
.modal.open{display:flex}
.modal-box{background:#fff;border-radius:var(--r-lg);max-width:460px;width:100%;padding:24px;box-shadow:var(--sh-lg);max-height:88vh;overflow:auto}
.modal-box h3{margin-bottom:12px;color:var(--brand-d)}

/* ---------- 提示 ---------- */
.toast{
  position:fixed;left:50%;top:80px;transform:translate(-50%,-14px);z-index:400;
  background:#16202f;color:#fff;padding:11px 22px;border-radius:9px;font-size:13.5px;
  opacity:0;pointer-events:none;transition:.22s;box-shadow:var(--sh-lg);max-width:88vw;text-align:center;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- 页脚 ---------- */
.site-footer{background:#0f2742;color:#a9bdd4;margin-top:44px;font-size:13px}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:28px;padding-top:34px;padding-bottom:26px}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:12px}
.footer-col a{display:block;color:#a9bdd4;padding:3px 0}
.footer-col a:hover{color:#fff}
.footer-col p{margin:0 0 7px;line-height:1.65}
.footer-legal a{color:#8fc0f0;text-decoration:underline;text-underline-offset:2px}
.footer-legal a:hover{color:#fff}
.footer-logo{color:#fff;font-size:16px;font-weight:700;margin-bottom:10px}
.footer-desc{font-size:12.5px;color:#93a9c2;line-height:1.7}
.footer-bottom{border-top:1px solid #1d3d61;padding:14px 0}
.copyright{text-align:center;font-size:12.5px;color:#93a9c2;margin:0}

/* ---------- 英雄区 ---------- */
.hero{
  background:linear-gradient(120deg,#0d3a67 0%,#14508c 48%,#1d6bb8 100%);
  color:#fff;position:relative;overflow:hidden;
}
.hero .wrap{padding-top:52px;padding-bottom:52px;position:relative;z-index:2}
.hero h1{font-size:34px;line-height:1.32;margin-bottom:14px;letter-spacing:.5px}
.hero p{font-size:15px;color:#cfe0f3;max-width:620px;margin-bottom:24px}
.hero .stat{display:flex;gap:38px;margin-top:30px;flex-wrap:wrap}
.hero .stat div{font-size:23px;font-weight:700}
.hero .stat span{display:block;font-size:12.5px;color:#a9c6e6;font-weight:400;margin-top:2px}
.hero::after{
  content:"";position:absolute;right:-90px;top:-70px;width:400px;height:400px;border-radius:50%;
  background:rgba(255,255,255,.055);
}
.hero::before{
  content:"";position:absolute;right:110px;bottom:-140px;width:290px;height:290px;border-radius:50%;
  background:rgba(255,255,255,.04);
}

/* ---------- 特性条 ---------- */
.feature-bar{background:#fff;border-bottom:1px solid var(--line)}
.feature-bar .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding-top:20px;padding-bottom:20px}
.feature{display:flex;gap:11px;align-items:flex-start}
.feature .ic{
  width:38px;height:38px;border-radius:10px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0;font-weight:600;
}
.feature .t{font-size:13.5px;font-weight:600;color:var(--ink)}
.feature .d{font-size:12px;color:var(--muted);line-height:1.5}

/* ---------- 支付页 ---------- */
.alipay-box{max-width:620px;margin:34px auto;background:#fff;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--sh);overflow:hidden}
.alipay-head{background:#1677ff;color:#fff;padding:18px 24px;display:flex;align-items:center;gap:10px}
.alipay-head .logo{font-size:17px;font-weight:700;letter-spacing:.5px}
.alipay-body{padding:28px 30px}
.alipay-amount{font-size:32px;font-weight:700;color:#16202f;margin-bottom:6px}
.alipay-rows{border-top:1px solid var(--line);margin-top:20px;padding-top:8px}
.alipay-rows .r{display:flex;justify-content:space-between;padding:9px 0;font-size:13.5px;border-bottom:1px dashed var(--line)}
.alipay-rows .r .k{color:var(--muted)}
.alipay-rows .r .v{color:var(--ink);text-align:right;max-width:64%;word-break:break-all}
.pay-methods{display:flex;gap:12px;margin:22px 0}
.pay-methods label{
  flex:1;border:1px solid var(--line);border-radius:9px;padding:13px;display:flex;gap:9px;
  align-items:center;font-size:13.5px;cursor:pointer;
}
.pay-methods label.on{border-color:#1677ff;box-shadow:0 0 0 3px rgba(22,119,255,.12);background:#f6faff}
.warn-strip{background:#fff8e6;border:1px solid #f3dfb0;color:#8a6412;border-radius:9px;padding:11px 14px;font-size:12.5px;margin-bottom:18px}

/* ---------- 认证页 ---------- */
.auth-wrap{max-width:960px;margin:32px auto;display:grid;grid-template-columns:1fr 1fr;background:#fff;border-radius:16px;overflow:hidden;box-shadow:var(--sh);border:1px solid var(--line)}
.auth-side{background:linear-gradient(150deg,#0d3a67,#1d6bb8);color:#fff;padding:40px 34px;display:flex;flex-direction:column;justify-content:center;gap:14px}
.auth-side h2{font-size:22px;line-height:1.4}
.auth-side ul{padding-left:18px;color:#cfe0f3;font-size:13.5px;line-height:2}
.auth-main{padding:38px 40px}
.tabs{display:flex;border-bottom:1px solid var(--line);margin-bottom:24px}
.tabs button{
  background:none;border:0;padding:11px 20px;font-size:15px;color:var(--muted);
  border-bottom:2px solid transparent;font-weight:500;
}
.tabs button.on{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}
.tabpane{display:none}
.tabpane.on{display:block}
.field-code{display:flex;gap:8px}
.field-code .input{flex:1}
.field-code button{white-space:nowrap;border:1px solid var(--brand);color:var(--brand);background:#fff;border-radius:8px;padding:0 14px;font-size:13px}
.field-code button:hover{background:var(--brand-soft)}
.field-code button[disabled]{border-color:var(--line);color:#a8b3c2}

/* ---------- 内容页排版（协议等） ---------- */
.doc{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:34px 40px;font-size:14.5px;line-height:1.95;color:var(--ink-2)}
.doc h1{font-size:22px;text-align:center;margin-bottom:8px;color:var(--ink)}
.doc .doc-meta{text-align:center;color:var(--muted);font-size:12.5px;margin-bottom:26px}
.doc h2{font-size:16px;margin:26px 0 10px;color:var(--brand-d)}
.doc h3{font-size:14.5px;margin:18px 0 8px;color:var(--ink)}
.doc p{margin:0 0 11px}
.doc ul,.doc ol{padding-left:22px;margin-bottom:12px}
.doc li{margin-bottom:6px}
.doc table{width:100%;border-collapse:collapse;font-size:13.5px;margin:12px 0}
.doc th,.doc td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.doc th{background:#f7f9fc;color:var(--ink-2)}
.doc a{color:var(--brand);text-decoration:none}

/* ---------- 文章（ICP 站复用同版式） ---------- */
.art-body{font-size:15px;line-height:2.05;color:#2b3746}
.art-body h2{font-size:18px;margin:30px 0 12px;color:var(--brand-d);padding-left:11px;border-left:4px solid var(--accent);line-height:1.4}
.art-body h3{font-size:15.5px;margin:20px 0 9px;color:var(--ink)}
.art-body p{margin:0 0 14px;text-indent:2em}
.art-body ul,.art-body ol{padding-left:26px;margin-bottom:15px}
.art-body li{margin-bottom:8px}
.art-body strong{color:var(--ink)}

/* ---------- 响应式 ---------- */
@media(max-width:1000px){
  .g4,.g5{grid-template-columns:repeat(3,1fr)}
  .footer-main{grid-template-columns:1fr 1fr;gap:24px}
  .detail-top{grid-template-columns:1fr}
  .layout,.layout-left{grid-template-columns:1fr}
  .auth-wrap{grid-template-columns:1fr}
  .auth-side{display:none}
}
@media(max-width:720px){
  .g2,.g3,.g4,.g5{grid-template-columns:repeat(2,1fr)}
  .feature-bar .wrap{grid-template-columns:1fr 1fr}
  .hero h1{font-size:24px}
  .hero .wrap{padding-top:34px;padding-bottom:34px}
  .mainbar .wrap{gap:10px}
  .brand-name{font-size:16px}
  .searchbar{order:3;width:100%;max-width:none;flex-basis:100%}
  .footer-main{grid-template-columns:1fr}
  .doc{padding:22px 18px}
  .auth-main{padding:26px 20px}
  .cs-panel{right:10px;left:10px;width:auto}
  .cs-fab{right:12px;bottom:14px}
  .alipay-body{padding:20px 18px}
}
@media(max-width:460px){
  .g4,.g5{grid-template-columns:1fr 1fr}
  .mainbar-right .txt{display:none}
}