:root{
  --bg:#0b0f14; --bg2:#10161e; --panel:#131b24; --panel2:#182230;
  --line:#1f2b39; --text:#e6edf5; --muted:#8b9bb0; --dim:#5f7182;
  --brand:#2f7cf6; --brand2:#39b3ff; --ok:#2ecc8f; --warn:#f5a623; --err:#f2545b;
  --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(1200px 600px at 50% -200px, #16263b 0%, var(--bg) 60%) fixed, var(--bg);
  color:var(--text); font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased; min-height:100vh;
}
a{color:var(--brand2);text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.center{max-width:520px;margin:0 auto;padding:0 20px}

/* 顶部 */
.top{display:flex;align-items:center;justify-content:space-between;padding:22px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.3px}
.logo{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;font-size:15px;color:#fff}
.top .links{display:flex;gap:18px;font-size:13px;color:var(--muted)}

/* 卡片 */
.card{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card + .card{margin-top:16px}
h1{font-size:24px;margin:0 0 6px}
h2{font-size:17px;margin:0 0 14px}
.sub{color:var(--muted);font-size:13px;margin:0}
.muted{color:var(--muted)}
.dim{color:var(--dim);font-size:12px}

/* 表单 */
label.fl{display:block;font-size:12px;color:var(--muted);margin:16px 0 7px;letter-spacing:.4px}
select,input,textarea{
  width:100%;background:#0d141c;border:1px solid var(--line);color:var(--text);
  border-radius:10px;padding:12px 13px;font:inherit;outline:none;transition:border-color .15s,box-shadow .15s
}
select:focus,input:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,124,246,.15)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,var(--brand),#3a8bff);color:#fff;border:0;
  padding:13px 20px;border-radius:11px;font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .08s,filter .15s;width:100%
}
.btn:hover{filter:brightness(1.08)}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn.ghost{background:#16202c;border:1px solid var(--line);color:var(--text);font-weight:500}
.btn.sm{width:auto;padding:8px 14px;font-size:13px;border-radius:9px}
.btn.danger{background:#3a1a1e;color:#ff9aa0;border:1px solid #5a2429}

/* 二维码区 */
.qrbox{display:none;flex-direction:column;align-items:center;gap:14px;padding:8px 0 4px}
.qrbox.on{display:flex}
.qrwrap{background:#fff;padding:12px;border-radius:14px;line-height:0;box-shadow:0 8px 30px rgba(0,0,0,.45)}
.qrwrap img{width:220px;height:220px;display:block}
.status{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--warn);box-shadow:0 0 0 4px rgba(245,166,35,.12)}
.dot.ok{background:var(--ok);box-shadow:0 0 0 4px rgba(46,204,143,.12)}
.dot.err{background:var(--err);box-shadow:0 0 0 4px rgba(242,84,91,.12)}
.spin{width:14px;height:14px;border:2px solid var(--line);border-top-color:var(--brand);border-radius:50%;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* 结果 */
.result{display:none;text-align:left}
.result.on{display:block}
.kv{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px}
.kv:last-child{border-bottom:0}
.kv b{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-weight:600;letter-spacing:.3px}
.copy{background:#16202c;border:1px solid var(--line);color:var(--muted);border-radius:7px;padding:3px 8px;font-size:12px;cursor:pointer}
.tag{display:inline-block;padding:2px 8px;border-radius:6px;font-size:12px}
.tag.ok{background:rgba(46,204,143,.12);color:var(--ok)}
.tag.err{background:rgba(242,84,91,.12);color:var(--err)}
.tag.warn{background:rgba(245,166,35,.12);color:var(--warn)}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:8px}
.step{background:#0e151d;border:1px solid var(--line);border-radius:11px;padding:14px}
.step .n{width:20px;height:20px;border-radius:50%;background:#1b2a3b;color:var(--brand2);font-size:11px;display:grid;place-items:center;margin-bottom:8px;font-weight:700}
.step p{margin:0;font-size:12px;color:var(--muted);line-height:1.55}

.stats{display:flex;gap:26px;margin-top:18px}
.stats div{flex:1}
.stats b{display:block;font-size:22px;font-weight:700}
.stats span{font-size:12px;color:var(--dim)}

.notice{margin-top:14px;background:rgba(47,124,246,.08);border:1px solid rgba(47,124,246,.25);border-radius:10px;padding:12px 14px;font-size:12.5px;color:#a9c6ea}

/* 后台 */
.shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
.side{background:#0a1017;border-right:1px solid var(--line);padding:20px 14px;position:sticky;top:0;height:100vh}
.side .brand{margin-bottom:22px;font-size:14px}
.nav a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;color:var(--muted);font-size:13.5px;margin-bottom:2px;cursor:pointer}
.nav a:hover{background:#101a24;color:var(--text)}
.nav a.on{background:#132437;color:#fff;box-shadow:inset 2px 0 0 var(--brand)}
.main{padding:26px 30px 60px;min-width:0}
.hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:16px;flex-wrap:wrap}
.hd h2{margin:0;font-size:20px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px}
.stat b{display:block;font-size:24px;font-weight:700;margin-bottom:2px}
.stat span{font-size:12px;color:var(--dim)}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;color:var(--dim);font-weight:500;padding:10px 10px;border-bottom:1px solid var(--line);white-space:nowrap;font-size:12px}
td{padding:11px 10px;border-bottom:1px solid #161f29;vertical-align:middle}
tr:hover td{background:#101822}
.mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12.5px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.input-sm{padding:9px 11px;font-size:13px;width:auto}
.pager{display:flex;gap:8px;justify-content:flex-end;margin-top:14px;align-items:center;color:var(--muted);font-size:12px}
.tabpane{display:none}
.tabpane.on{display:block}
.empty{padding:40px;text-align:center;color:var(--dim);font-size:13px}
.login{position:fixed;inset:0;background:var(--bg);display:grid;place-items:center;z-index:50}
.login .card{width:360px}
.toast{position:fixed;right:20px;bottom:24px;background:#16222f;border:1px solid var(--line);color:var(--text);padding:12px 16px;border-radius:10px;font-size:13px;opacity:0;transform:translateY(8px);transition:.2s;z-index:99}
.toast.on{opacity:1;transform:none}
.bar{height:6px;background:#0e151d;border-radius:4px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2))}
@media(max-width:820px){
  .shell{grid-template-columns:1fr}
  .side{position:static;height:auto;display:flex;align-items:center;overflow:auto;gap:6px;border-right:0;border-bottom:1px solid var(--line);padding:12px}
  .side .brand{display:none}
  .nav{display:flex;gap:6px}
  .nav a{white-space:nowrap;margin:0}
  .main{padding:18px}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
}