:root,[data-theme="light"]{
  --bg:#f4f6fb; --card:#ffffff; --border:#e2e8f0; --text:#1a2333;
  --muted:#64748b; --accent:#2f6df6; --ok:#16a34a; --err:#dc2626;
  --nav-bg:#ffffff; --input-bg:#ffffff; --tag-bg:#eef2f7;
  --flash-ok-bg:#dcfce7; --flash-err-bg:#fee2e2; --tick:#fef9c3;
}
[data-theme="dark"]{
  --bg:#0f1420; --card:#182030; --border:#263049; --text:#e8edf5;
  --muted:#8b96ad; --accent:#4f8cff; --ok:#3ecf8e; --err:#ff6b6b;
  --nav-bg:#0c111c; --input-bg:#0f1626; --tag-bg:#24304a;
  --flash-ok-bg:#123626; --flash-err-bg:#3a1a1a; --tick:#fef9c3;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.6}
nav{display:flex;justify-content:space-between;align-items:center;
  padding:12px 24px;border-bottom:1px solid var(--border);background:var(--nav-bg)}
.brand{font-weight:700;font-size:18px;color:var(--text);text-decoration:none}
.nav-links{display:flex;gap:16px;align-items:center}
.nav-links a{color:var(--text);text-decoration:none;font-size:14px}
.nav-links a:hover{color:var(--accent)}
main{max-width:960px;margin:0 auto;padding:24px;min-height:70vh}
footer{text-align:center;color:var(--muted);font-size:12px;padding:24px}
h1{font-size:34px} h2{font-size:22px} h3{font-size:16px;margin:18px 0 8px}
a{color:var(--accent)}
.muted{color:var(--muted)} .small{font-size:13px}
.hero{text-align:center;padding:48px 0}
.hero p{color:var(--muted);margin-bottom:24px}
.btn{display:inline-block;background:var(--accent);color:#fff;border:none;
  padding:8px 18px;border-radius:8px;cursor:pointer;text-decoration:none;font-size:14px}
.btn.big{padding:12px 28px;font-size:16px}
.btn:hover{filter:brightness(1.1)}
.card{background:var(--card);border:1px solid var(--border);
  border-radius:12px;padding:18px;margin-bottom:16px}
.grid4{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-top:24px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:12px}
.grid4 .card h3,.grid2 .card h3{margin-top:0}
.row-between{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.tag{background:var(--tag-bg);border-radius:6px;padding:2px 10px;font-size:12px;color:var(--muted)}
.actions{display:flex;gap:12px;margin-top:8px;font-size:14px}
button.link{background:none;border:none;color:var(--accent);cursor:pointer;font-size:14px;padding:0}
button.link.danger{color:var(--err)}
.auth{max-width:420px;margin:40px auto}
.form-card{max-width:560px}
label{display:block;margin:12px 0;font-size:14px}
input[type=text],input[type=email],input[type=password],input[type=number],select,textarea{
  width:100%;margin-top:6px;padding:10px;border-radius:8px;
  border:1px solid var(--border);background:var(--input-bg);color:var(--text);font-size:14px}
input[type=checkbox]{width:auto;margin-right:8px}
.flash{padding:10px 16px;border-radius:8px;margin-bottom:12px;font-size:14px}
.flash.ok{background:var(--flash-ok-bg);color:var(--ok)}
.flash.error{background:var(--flash-err-bg);color:var(--err)}
.event{background:var(--card);border:1px solid var(--border);border-radius:10px;
  padding:12px 16px;margin-bottom:10px}
.empty{text-align:center;color:var(--muted);padding:32px}
.err{color:var(--err)}
.lang-switch{font-size:13px;color:var(--muted);border-left:1px solid var(--border);padding-left:12px}
.lang-switch a{font-size:13px}
.lang-switch select{font-size:13px;padding:2px 6px;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text)}
.live-quote{margin:4px 0}
.chg-up{color:#16a34a;font-weight:600}
.chg-down{color:#dc2626;font-weight:600}
.lq-time{font-size:11px;margin-left:6px}
.lq-val.tick{animation:tickflash 1.2s ease-out}
@keyframes tickflash{0%{background:var(--tick)}100%{background:transparent}}
.preview-box{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px;max-height:220px;overflow:auto;white-space:pre-wrap;font-size:12px;margin:8px 0}
.btn.ghost{background:transparent;border:1px solid var(--border)}
.balance{font-size:14px;margin-right:12px;text-decoration:none;color:var(--text)}
.pkg{text-align:center}
.pkg .big{font-size:22px;font-weight:700;margin:8px 0}

.form-card.wide{max-width:880px}
.form-card.center{margin-left:auto;margin-right:auto}
.theme-toggle{background:none;border:1px solid var(--border);border-radius:8px;cursor:pointer;font-size:16px;padding:4px 10px;color:var(--text)}
.theme-toggle:hover{border-color:var(--accent)}
.refresh-sel{width:auto;margin:0;font-size:13px;padding:6px 8px}

/* 内容页 / 落地页新增 */
.page{max-width:780px;margin:0 auto;padding:8px 0}
.prose{line-height:1.75}
.prose h2{margin:28px 0 8px;font-size:19px}
.prose ul{padding-left:22px}
.prose li{margin:6px 0}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:16px}
.grid3 .card h3,.grid2 .card h3{margin-top:0}
.section-t{text-align:center;margin:40px 0 8px}
.faq{max-width:720px;margin:8px auto 0}
.faq details{border:1px solid var(--border);border-radius:10px;padding:12px 16px;margin:10px 0}
.faq summary{cursor:pointer;font-weight:600}
.faq p{color:var(--muted);margin:8px 0 2px}
footer a{color:var(--muted);text-decoration:none;margin:0 4px}
footer a:hover{color:var(--accent);text-decoration:underline}
.tbl{width:100%;border-collapse:collapse;margin-top:8px}
.tbl th,.tbl td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);font-size:14px;vertical-align:top}
.tbl th{color:var(--muted);font-weight:600;white-space:nowrap}
.tbl tr:hover td{background:var(--tag-bg)}
.meter{height:8px;background:var(--tag-bg);border-radius:4px;overflow:hidden;margin-top:6px}
.meter>i{display:block;height:100%;background:var(--accent);border-radius:4px}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:6px}
.dot.ok{background:var(--ok)} .dot.err{background:var(--err)} .dot.na{background:var(--muted)}
.stat-num{font-size:28px;font-weight:700;margin:4px 0}
.adnav{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.adnav a{padding:6px 14px;border:1px solid var(--border);border-radius:8px;text-decoration:none;color:var(--text);font-size:14px}
.adnav a.on{background:var(--accent);color:#fff;border-color:var(--accent)}
.inline-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.inline-form input{width:auto}
.danger{background:var(--err)}
.testi p{font-size:14px}
.stars{color:#f59e0b;letter-spacing:2px;margin-bottom:8px}
.vision{text-align:center;max-width:640px;margin:8px auto 32px;padding:28px 24px}
.vision-kicker{color:var(--muted);font-size:13px;letter-spacing:3px;margin-bottom:12px}
.vision-body{font-size:20px;line-height:1.8;margin:0}

/* ===== 移动端适配 ===== */
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:8px;
  font-size:18px;padding:4px 12px;color:var(--text);cursor:pointer;line-height:1.4}
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}

@media (max-width:720px){
  nav{padding:10px 16px;position:relative;flex-wrap:nowrap}
  .brand{font-size:16px}
  .nav-toggle{display:block;flex-shrink:0}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;z-index:50;
    background:var(--nav-bg);border-bottom:1px solid var(--border);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 12px}
  .nav-links.open{display:flex}
  .nav-links a{display:block;padding:11px 4px;font-size:15px;border-bottom:1px solid var(--border)}
  .nav-links a.btn{margin:8px 0;text-align:center;border-bottom:none}
  .nav-links .muted{padding:8px 4px;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .nav-links .lang-switch{border-left:none;padding:10px 4px 0}
  .nav-links .theme-toggle{margin-top:8px;align-self:flex-start}
  main{padding:16px;max-width:100%}
  h1{font-size:26px} h2{font-size:19px}
  .hero{padding:28px 0}
  .hero h1{font-size:28px}
  .vision{padding:20px 16px;margin-bottom:24px}
  .vision-body{font-size:17px}
  .section-t{margin:28px 0 8px}
  .row-between{flex-wrap:wrap;gap:8px}
  .actions{flex-wrap:wrap}
  .btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center}
  .btn.big{width:100%}
  input[type=text],input[type=email],input[type=password],input[type=number],select,textarea{font-size:16px}
  .tbl th,.tbl td{font-size:13px;padding:7px 8px;white-space:nowrap}
  .tbl td.wrap{white-space:normal}
  .auth{margin:24px auto}
  .card{padding:14px}
  .stat-num{font-size:24px}
  .grid2{grid-template-columns:1fr}
  .inline-form input{width:100%}
  .faq details{padding:10px 12px}
  main.wide{max-width:100%}
}

/* dashboard 宽屏 + 卡片排序 */
main.wide{max-width:1400px}
.drag-handle{cursor:grab;color:var(--muted);font-size:14px;letter-spacing:2px;
  padding:6px 10px;user-select:none;-webkit-user-select:none;touch-action:none}
.drag-handle:active{cursor:grabbing}
.mcard.dragging{opacity:.35}
.mcard.drag-over{outline:2px dashed var(--accent);outline-offset:-2px}
.move-btns{display:inline-flex;align-items:center;gap:2px}
button.link.mov{font-size:15px;padding:8px 10px;min-width:40px}

/* help center */
.toc{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;
  background:var(--card);border:1px solid var(--border);border-radius:10px;
  padding:12px 14px;margin:12px 0 8px}
.toc b{margin-right:4px}
.toc a{white-space:nowrap;font-size:14px}
.help-sec{scroll-margin-top:70px;border-bottom:1px solid var(--border);padding:6px 0 10px}
.help-sec:last-of-type{border-bottom:none}
.help h1{margin-bottom:4px}