:root{
  --red:#E1251B;
  --red-dark:#A50E0E;
  --orange:#F2870A;
  --ink:#16110F;
  --gray:#57534E;
  --gray-light:#78716C;
  --bg-warm:#F9F9F9;
  --footer-bg:#1A1110;
  --border:#ECECEC;
  --border-soft:#EDEDED;
  --tint-red:#FDECEB;
  --tint-orange:#FEF3E0;
  --tint-green:#ECFDF5;
  --green:#10B981;
  --radius:16px;
  --shadow:0 8px 24px -4px rgba(0,0,0,.10);
  --shadow-lg:0 24px 48px -8px rgba(225,37,27,.18);
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg-warm);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;}
img{max-width:100%;}

/* ===== 顶部导航 ===== */
.topbar{
  position:sticky;top:0;z-index:50;
  background:#fff;border-bottom:1px solid var(--border);
  backdrop-filter:saturate(180%) blur(8px);
}
.topbar .inner{
  max-width:1160px;margin:0 auto;padding:14px 20px;
  display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;}
.brand .logo{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(180deg,var(--red),var(--red-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;
  box-shadow:var(--shadow);
}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--gray-light);letter-spacing:.5px;}
.nav{display:flex;gap:22px;margin-left:10px;}
.nav a{font-size:15px;font-weight:500;color:var(--gray);transition:color .2s;}
.nav a:hover{color:var(--red);}
.topbar .spacer{flex:1;}
.auth-zone{display:flex;align-items:center;gap:12px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:50px;font-size:15px;font-weight:600;
  cursor:pointer;border:1.5px solid transparent;transition:all .18s ease;white-space:nowrap;
}
.btn-primary{background:linear-gradient(180deg,var(--red),var(--red-dark));color:#fff;box-shadow:var(--shadow);}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-secondary{background:#fff;border-color:var(--red);color:var(--red);}
.btn-secondary:hover{background:var(--tint-red);}
.btn-ghost{background:transparent;color:var(--gray);border-color:var(--border);}
.btn-ghost:hover{border-color:var(--red);color:var(--red);}
.btn-sm{padding:7px 14px;font-size:13px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}

/* ===== 布局 ===== */
.wrap{max-width:1160px;margin:0 auto;padding:0 20px;}
.section{padding:64px 0;}
.section-sm{padding:36px 0;}

/* ===== Hero ===== */
.hero{
  background:linear-gradient(135deg,#fff 0%,var(--tint-red) 100%);
  border-bottom:1px solid var(--border-soft);
}
.hero .inner{max-width:1160px;margin:0 auto;padding:72px 20px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;}
.hero h1{font-size:46px;line-height:1.18;font-weight:800;margin:0 0 18px;letter-spacing:-.5px;}
.hero h1 .hl{color:var(--red);}
.hero p.lead{font-size:18px;color:var(--gray);margin:0 0 28px;max-width:520px;}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap;}
.hero .trust{margin-top:26px;display:flex;gap:24px;flex-wrap:wrap;color:var(--gray-light);font-size:14px;}
.hero .trust b{color:var(--ink);font-size:20px;display:block;font-weight:800;}

.hero-card{
  background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-lg);
  padding:26px;border:1px solid var(--border-soft);
}
.hero-card h3{margin:0 0 6px;font-size:17px;}
.hero-card .row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px dashed var(--border);font-size:14px;}
.hero-card .row:last-child{border-bottom:none;}
.hero-card .row .v{font-weight:700;color:var(--red-dark);}

/* ===== 区块标题 ===== */
.sec-head{text-align:center;margin-bottom:42px;}
.sec-head .eyebrow{color:var(--red);font-weight:700;font-size:14px;letter-spacing:2px;text-transform:uppercase;}
.sec-head h2{font-size:32px;font-weight:800;margin:8px 0 6px;}
.sec-head p{color:var(--gray);margin:0;font-size:16px;}

/* ===== 产品卡 ===== */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;display:flex;flex-direction:column;transition:all .2s ease;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#f3c9c6;}
.card .tag{position:absolute;top:16px;right:16px;background:var(--tint-orange);color:var(--orange);font-size:12px;font-weight:700;padding:4px 10px;border-radius:50px;}
.card .cat{font-size:13px;color:var(--gray-light);font-weight:600;}
.card h3{font-size:20px;margin:6px 0 4px;}
.card .price{margin:14px 0;display:flex;align-items:baseline;gap:4px;}
.card .price .num{font-size:34px;font-weight:800;color:var(--red-dark);}
.card .price .unit{color:var(--gray-light);font-size:14px;}
.card .desc{color:var(--gray);font-size:14px;min-height:42px;}
.card ul.feat{list-style:none;padding:0;margin:14px 0 20px;}
.card ul.feat li{font-size:14px;color:var(--gray);padding:6px 0 6px 24px;position:relative;}
.card ul.feat li:before{content:"✓";position:absolute;left:0;top:6px;color:var(--red);font-weight:800;}
.card .actions{margin-top:auto;display:flex;flex-direction:column;gap:10px;}

/* ===== 表单 ===== */
.auth-box{max-width:420px;margin:60px auto;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:34px;}
.auth-box h2{margin:0 0 4px;font-size:24px;}
.auth-box .sub{color:var(--gray-light);margin:0 0 24px;font-size:14px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--gray);}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border:1.5px solid var(--border);border-radius:10px;font-size:14px;
  font-family:inherit;color:var(--ink);background:#fff;transition:border-color .15s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--red);}
.field textarea{resize:vertical;min-height:80px;}
.hint{font-size:12px;color:var(--gray-light);margin-top:6px;}
.alert{padding:11px 14px;border-radius:10px;font-size:14px;margin-bottom:16px;display:none;}
.alert.err{background:var(--tint-red);color:var(--red-dark);border:1px solid #f3c9c6;}
.alert.ok{background:var(--tint-green);color:#047857;border:1px solid #bbf7d0;}
.auth-foot{text-align:center;font-size:14px;color:var(--gray);margin-top:18px;}

/* ===== 支付配置 ===== */
.pay-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:18px;}
.pay-col{background:var(--bg-warm);border:1px solid var(--border-soft);border-radius:12px;padding:18px;}
.pay-col h4{margin:0 0 14px;font-size:15px;color:var(--red-dark);}
.pay-col label,.pay-toggle{display:block;font-size:13px;font-weight:600;color:var(--gray);margin-bottom:12px;}
.pay-col input,.pay-col textarea{
  width:100%;padding:9px 11px;margin-top:5px;border:1.5px solid var(--border);border-radius:9px;
  font-size:13px;font-family:inherit;color:var(--ink);background:#fff;font-weight:400;transition:border-color .15s;
}
.pay-col textarea{resize:vertical;min-height:62px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;}
.pay-col input:focus,.pay-col textarea:focus{outline:none;border-color:var(--red);}
.pay-toggle{display:flex;align-items:center;gap:8px;font-weight:600;cursor:pointer;margin-top:4px;}
.pay-toggle input{width:16px;height:16px;margin:0;}
.pay-tip{font-size:12px;color:var(--gray-light);background:var(--tint-orange);border:1px solid #fbe3c2;border-radius:10px;padding:12px 14px;margin:0;line-height:1.7;}
.pay-tip code{background:#fff;padding:1px 6px;border-radius:5px;border:1px solid var(--border);font-size:12px;}
@media(max-width:760px){.pay-grid{grid-template-columns:1fr;}}

/* ===== 客户中心 ===== */
.dash-head{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px 26px;display:flex;align-items:center;gap:16px;margin-bottom:24px;box-shadow:var(--shadow);}
.dash-head .ava{width:46px;height:46px;border-radius:50%;background:linear-gradient(180deg,var(--red),var(--red-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;}
.dash-head .meta b{font-size:17px;}
.dash-head .meta span{color:var(--gray-light);font-size:13px;}
.dash-head .spacer{flex:1;}

.panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:24px;box-shadow:var(--shadow);}
.panel h3{margin:0 0 16px;font-size:18px;display:flex;align-items:center;gap:8px;}
.panel h3 .bar{width:4px;height:18px;background:var(--red);border-radius:2px;display:inline-block;}

.sub-card{border:1px solid var(--border);border-radius:12px;padding:18px;margin-bottom:14px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;}
.sub-card .info b{font-size:16px;}
.sub-card .info .meta{color:var(--gray-light);font-size:13px;margin-top:4px;}
.sub-card .ops{display:flex;gap:10px;align-items:center;}

/* ===== 徽章 ===== */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;padding:4px 10px;border-radius:50px;}
.badge.green{background:var(--tint-green);color:#047857;}
.badge.red{background:var(--tint-red);color:var(--red-dark);}
.badge.gray{background:#F5F5F4;color:var(--gray);}
.badge.orange{background:var(--tint-orange);color:var(--orange);}
.dot{width:7px;height:7px;border-radius:50%;background:currentColor;display:inline-block;}

/* ===== 表格 ===== */
.table{width:100%;border-collapse:collapse;font-size:14px;}
.table th,.table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--border-soft);}
.table th{font-size:12px;color:var(--gray-light);font-weight:700;text-transform:uppercase;letter-spacing:.5px;background:#fafafa;}
.table tr:hover td{background:#fcfcfc;}
.table td .row-ops{display:flex;gap:8px;}

/* ===== 后台 tabs ===== */
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--border);margin-bottom:22px;flex-wrap:wrap;}
.tabs button{background:none;border:none;padding:12px 18px;font-size:15px;font-weight:600;color:var(--gray-light);cursor:pointer;border-bottom:2px solid transparent;font-family:inherit;}
.tabs button.active{color:var(--red);border-bottom-color:var(--red);}

/* ===== 分段筛选按钮 ===== */
.seg{background:#fafafa;border:1px solid var(--border);padding:6px 12px;border-radius:50px;font-size:13px;font-weight:600;color:var(--gray-light);cursor:pointer;font-family:inherit;transition:all .15s;}
.seg b{color:var(--red);}
.seg:hover{border-color:#f3c9c6;}
.seg.active{background:var(--tint-red);border-color:var(--red);color:var(--red-dark);}
.seg.active b{color:var(--red-dark);}

/* ===== 弹窗 ===== */
.modal-mask{position:fixed;inset:0;background:rgba(26,17,16,.45);display:none;align-items:center;justify-content:center;z-index:100;padding:20px;}
.modal-mask.show{display:flex;}
.modal{background:#fff;border-radius:var(--radius);padding:26px;width:100%;max-width:460px;box-shadow:var(--shadow-lg);}
.modal h3{margin:0 0 18px;font-size:19px;}
.modal .foot{display:flex;gap:10px;justify-content:flex-end;margin-top:20px;}

/* ===== 页脚 ===== */
.foot-bar{background:var(--footer-bg);color:#fff;padding:40px 0;margin-top:40px;}
.foot-bar .inner{max-width:1160px;margin:0 auto;padding:0 20px;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.foot-bar .col h4{margin:0 0 12px;font-size:15px;}
.foot-bar .col a,.foot-bar .col p{color:#cfc7c4;font-size:14px;margin:4px 0;display:block;}
.foot-bar .copy{max-width:1160px;margin:24px auto 0;padding:18px 20px 0;border-top:1px solid rgba(255,255,255,.12);color:#9b8f8c;font-size:13px;}
.empty{text-align:center;color:var(--gray-light);padding:30px 0;font-size:14px;}

/* ===== 响应式 ===== */
@media (max-width:900px){
  .hero .inner{grid-template-columns:1fr;padding:48px 20px;}
  .hero h1{font-size:36px;}
  .grid{grid-template-columns:1fr;}
  .nav{display:none;}
}