:root{
  --bg:#0f1021; --card:#1a1b36; --card2:#222448; --fg:#ececf5; --muted:#9a9ab5;
  --accent:#6c5ce7; --accent2:#8b7bf0; --ok:#2ecc71; --warn:#f39c12; --err:#e74c3c;
  --line:#2c2e55; --radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  background:linear-gradient(135deg,#0f1021,#171835);color:var(--fg);min-height:100vh}
a{color:var(--accent2)}
.wrap{max-width:420px;margin:7vh auto;padding:0 18px}
.wrap-wide{max-width:1180px;margin:24px auto;padding:0 18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 10px 40px rgba(0,0,0,.35)}
h1{font-size:22px;margin:0 0 4px}
h2{font-size:17px;margin:22px 0 10px}
.sub{color:var(--muted);font-size:14px;margin:0 0 20px}
label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
input,select{width:100%;padding:11px 12px;border-radius:9px;border:1px solid var(--line);background:#12132a;color:var(--fg);font-size:14px}
input:focus,select:focus{outline:none;border-color:var(--accent)}
.row{display:flex;gap:10px}
.row>*{flex:1}
button{cursor:pointer;border:none;border-radius:9px;padding:11px 16px;font-size:14px;font-weight:600;background:var(--accent);color:#fff;transition:.15s}
button:hover{background:var(--accent2)}
button:disabled{opacity:.5;cursor:not-allowed}
button.ghost{background:transparent;border:1px solid var(--line);color:var(--fg)}
button.ghost:hover{background:var(--card2)}
button.sm{padding:6px 10px;font-size:12px;border-radius:7px}
button.danger{background:var(--err)}
button.warnb{background:var(--warn)}
.full{width:100%;margin-top:18px}
.msg{margin-top:14px;padding:11px 12px;border-radius:9px;font-size:13.5px;display:none}
.msg.show{display:block}
.msg.ok{background:rgba(46,204,113,.14);color:#86f0b4;border:1px solid rgba(46,204,113,.3)}
.msg.err{background:rgba(231,76,60,.14);color:#f3a79f;border:1px solid rgba(231,76,60,.3)}
.msg.info{background:rgba(108,92,231,.14);color:#c3bafb;border:1px solid rgba(108,92,231,.3)}
.hint{color:var(--muted);font-size:12px;margin-top:6px}
.center{text-align:center}
.codebtn{white-space:nowrap;flex:0 0 auto;min-width:120px}
/* admin */
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.topbar h1{font-size:20px}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:12px;margin-bottom:22px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.stat .n{font-size:26px;font-weight:700}
.stat .l{color:var(--muted);font-size:12px;margin-top:4px}
.tabs{display:flex;gap:6px;margin-bottom:16px;flex-wrap:wrap}
.tab{padding:8px 14px;border-radius:8px;background:var(--card);border:1px solid var(--line);cursor:pointer;font-size:13px}
.tab.active{background:var(--accent);border-color:var(--accent)}
table{width:100%;border-collapse:collapse;font-size:13px;background:var(--card);border-radius:var(--radius);overflow:hidden}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}
tr:hover td{background:rgba(255,255,255,.02)}
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:11.5px;font-weight:600}
.b-active{background:rgba(46,204,113,.18);color:#7ff0b0}
.b-expired{background:rgba(243,156,18,.18);color:#ffcf87}
.b-over{background:rgba(231,76,60,.18);color:#f6a79f}
.b-disabled{background:rgba(154,154,181,.18);color:#c2c2d8}
.bar{height:6px;border-radius:4px;background:#2c2e55;overflow:hidden;margin-top:4px}
.bar > i{display:block;height:100%;background:var(--accent)}
.bar > i.hot{background:var(--err)}
.actions{display:flex;gap:5px;flex-wrap:wrap}
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;z-index:50}
.modal-bg.show{display:flex}
.modal{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;max-width:440px;width:92%;max-height:88vh;overflow:auto}
.modal h3{margin:0 0 14px}
.muted{color:var(--muted)}
.right{text-align:right}
.nowrap{white-space:nowrap}
.flex{display:flex;align-items:center;gap:8px}
.spacer{flex:1}
.pill{font-size:11px;padding:2px 8px;border-radius:12px;background:var(--card2);color:var(--muted)}
code{background:#12132a;padding:1px 6px;border-radius:5px;font-size:12px}
.offline{color:var(--err)} .online{color:var(--ok)}