:root{
  --bg:#e9e7e3; --surface:#ffffff; --surface2:#f5f3f0; --control:#ffffff;
  --text:#22262d; --muted:#67707b; --line:#ddd9d2;
  --navy:#1f3a5f; --navy-dark:#16304f;
  --green:#166534; --yellow:#9a6a12; --red:#b91c1c; --blue:#1f3a5f; --gold:#b45309;
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-size:15px;line-height:1.5}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.hidden{display:none!important}
.muted{color:var(--muted)}
.small{font-size:13px}
.error-box{background:#fdf0ef;border:1px solid var(--red);color:#991b1b;border-radius:10px;padding:10px 12px;margin:10px 0}
.offline-strip{background:#fdf3d7;color:#713f12;text-align:center;padding:8px;font-size:14px}
/* 登录 */
.login-wrap{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:20px}
.brand-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:28px 24px;width:100%;max-width:400px;box-shadow:0 12px 40px rgba(35,30,25,.14);text-align:center}
.brand-card h1{margin:10px 0 4px;font-size:24px}
.brand-card label{display:block;text-align:left;margin:12px 0;font-size:14px}
.brand-card input{width:100%;margin-top:6px;background:var(--control);border:1px solid var(--line);border-radius:10px;color:var(--text);padding:11px 12px;outline:none}
.brand-card input:focus{border-color:var(--navy);box-shadow:0 0 0 3px rgba(31,58,95,.20)}
.form-note{background:var(--surface2);border-radius:10px;padding:10px;margin:0 0 6px}
/* 顶栏（不固定，随页面滚动） */
.topbar{background:var(--surface);border-bottom:1px solid var(--line);padding:10px 12px 0}
.topbar-row{display:flex;justify-content:space-between;align-items:center;gap:10px;max-width:1180px;margin:0 auto}
.brand-mini{display:flex;align-items:center;gap:8px;font-size:17px}
.brand-mini strong{color:var(--navy)}
.account-box{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap;justify-content:flex-end}
.stepnav{display:flex;gap:6px;overflow-x:auto;padding:10px 0;max-width:1180px;margin:0 auto;scrollbar-width:thin}
.stepnav a{white-space:nowrap;text-decoration:none;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:14px;background:var(--surface2)}
.stepnav a.active{color:var(--navy-dark);border-color:var(--navy);background:#e9edf2}
.stepnav a .n{display:inline-block;min-width:20px;height:20px;line-height:20px;text-align:center;border-radius:50%;background:#ece9e5;color:var(--muted);margin-right:6px;font-size:12px}
.stepnav a.active .n{background:var(--navy);color:#fff}
/* 页面 */
.page{max-width:1180px;margin:0 auto;padding:14px 12px 40px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:12px;box-shadow:0 2px 10px rgba(35,30,25,.08)}
.card h2{margin:0 0 10px;font-size:17px;color:var(--navy)}
.card h3{margin:14px 0 8px;font-size:15px;color:#2c3542}
.card p b,.capsule b{color:var(--navy)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.field{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}
.field input,.field select{color:var(--text);background:var(--control);border:1px solid var(--line);border-radius:10px;padding:9px 11px;min-width:0}
.field input:focus,.field select:focus{border-color:var(--navy);outline:none;box-shadow:0 0 0 3px rgba(31,58,95,.20)}
label.inline{display:flex;align-items:center;gap:6px;font-size:14px}
input[type="text"],input[type="password"],input[type="number"],input[type="date"],select{color:var(--text);background:var(--control);border:1px solid var(--line);border-radius:10px;padding:9px 11px}
input:focus,select:focus{border-color:var(--navy);outline:none;box-shadow:0 0 0 3px rgba(31,58,95,.20)}
.btn{background:var(--control);border:1px solid var(--line);color:var(--text);border-radius:10px;padding:9px 16px}
.btn:hover{filter:brightness(.96)}
.btn.primary{background:#1f3a5f;border-color:#1f3a5f;color:#fff}
.btn.green{background:#166534;border-color:#166534;color:#fff}
.btn.red{background:#b91c1c;border-color:#b91c1c;color:#fff}
.btn.small{padding:5px 10px;font-size:13px}
.btn.block{width:100%;margin-top:10px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.big{padding:13px 22px;font-size:16px;font-weight:600}
.chip{display:inline-block;border-radius:999px;padding:2px 10px;font-size:12px;border:1px solid var(--line);background:var(--surface2);white-space:nowrap}
.chip.green{color:#166534;background:#e7f3ea;border-color:#a7d3b5}
.chip.yellow{color:#713f12;background:#fdf3d7;border-color:#ecd28a}
.chip.red{color:#991b1b;background:#fdf0ef;border-color:#f3b8b3}
.chip.blue{color:#1f3a5f;background:#e9edf2;border-color:#b9c6d6}
.capsule{display:flex;gap:16px;flex-wrap:wrap;background:var(--surface2);border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin:10px 0;font-size:14px}
.capsule b{font-size:15px}
/* 表格：手机端减小最小宽度，容器内横滚 */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:14px}
th,td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;white-space:nowrap}
th{color:#3d4753;font-weight:700;background:#f0ede9}
tbody tr:hover{background:rgba(31,58,95,.05)}
td.redcell{background:#fdf0ef;color:#991b1b}
td input{width:100%;min-width:110px}
/* SN 明细：批次小字、二返/等级 chips、收货格内明细行 */
.detail-batch{font-size:12px;color:var(--muted);white-space:nowrap}
.sn-detail{margin-top:4px;display:flex;gap:4px;flex-wrap:wrap}
.sn-detail:empty{display:none}
.list{list-style:none;margin:0;padding:0}
.list li{display:flex;justify-content:space-between;gap:10px;align-items:center;border-bottom:1px solid var(--line);padding:9px 2px;flex-wrap:wrap}
.list li:last-child{border-bottom:none}
.thumbs{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.thumbs figure{margin:0;text-align:center}
.thumbs img{width:110px;height:110px;object-fit:cover;border-radius:10px;border:1px solid var(--line);cursor:pointer}
.thumbs figcaption{font-size:12px;color:var(--muted);margin-top:4px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#ffffff;border:1px solid var(--line);color:var(--text);padding:11px 18px;border-radius:12px;box-shadow:0 8px 30px rgba(35,30,25,.18);z-index:100;max-width:92vw;text-align:center}
.modal-backdrop{position:fixed;inset:0;background:rgba(35,30,25,.45);display:flex;align-items:center;justify-content:center;z-index:200;padding:16px}
.modal{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px;max-width:92vw;max-height:92dvh;overflow:auto}
.modal img{max-width:86vw;max-height:78dvh;border-radius:10px}
.kv{display:grid;grid-template-columns:110px 1fr;gap:6px 12px;font-size:14px}
.kv dt{color:var(--muted)}
.kv dd{margin:0}
@media (max-width:640px){
  body{font-size:14px}
  .page{padding:12px 10px 32px}
  .card{padding:14px 12px}
  table{min-width:520px;font-size:13px}
  th,td{padding:8px 9px}
  .brand-card{padding:22px 16px}
  .account-box{font-size:12px}
  .brand-mini{font-size:16px}
  .stepnav a{padding:5px 11px;font-size:13px}
  .capsule{gap:10px 14px}
  .kv{grid-template-columns:88px 1fr}
  .thumbs img{width:96px;height:96px}
  /* 表单控件 16px：防止 iPhone 聚焦时自动放大，页面比例不再乱跳 */
  input[type="text"],input[type="password"],input[type="number"],input[type="date"],select,textarea{font-size:16px}
  .btn{padding:11px 18px}
  .btn.small{padding:6px 11px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important}
}

/* 语言切换器：沿用按钮观感，不改主题与布局 */
.lang-switch { display: inline-flex; gap: 4px; align-items: center; }
.lang-switch button { border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 999px; padding: 3px 10px; font-size: 13px; cursor: pointer; }
.lang-switch button.active { background: var(--navy); border-color: var(--navy); color: #fff; }