:root{
  --bg:#0f1115; --panel:#171a21; --panel-2:#1d2129; --line:#2a2f3a;
  --text:#e8ecf3; --muted:#8b93a3; --brand:#10a37f; --brand-2:#0d8a6b;
  --danger:#e5484d; --warn:#f5a524; --ok:#30a46c; --info:#3b82f6;
  --gold:#f0b90b; --radius:14px; --shadow:0 8px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(1200px 600px at 10% -10%,#1a2a26 0%,transparent 55%),var(--bg);
  color:var(--text);font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  min-height:100vh;
}
a{color:var(--brand);text-decoration:none}
.muted{color:var(--muted)}
.wrap{max-width:720px;margin:0 auto;padding:28px 20px 64px}
.top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;gap:12px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.3px}
.logo .mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--brand),#0b6b55);display:grid;place-items:center;font-size:15px;color:#04120e}
h1,h2,h3{margin:0 0 10px;font-weight:650;letter-spacing:.2px}
h1{font-size:22px}h2{font-size:17px}h3{font-size:15px}
p{margin:0 0 12px}

.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card+.card{margin-top:16px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}

.btn{
  appearance:none;border:1px solid var(--line);background:var(--panel-2);color:var(--text);
  padding:10px 16px;border-radius:10px;font-size:14px;cursor:pointer;transition:.15s;font-weight:500;
}
.btn:hover{background:#252a34;border-color:#39404e}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#04120e;font-weight:650}
.btn-primary:hover{background:var(--brand-2);border-color:var(--brand-2)}
.btn-gold{background:var(--gold);border-color:var(--gold);color:#1a1400;font-weight:650}
.btn-gold:hover{background:#e0a800;border-color:#e0a800}
.btn-ghost{background:transparent}
.btn-sm{padding:6px 11px;font-size:13px;border-radius:8px}
.btn-block{display:block;width:100%}

.field{display:block;margin-bottom:14px}
.field>span{display:block;font-size:13px;color:var(--muted);margin-bottom:7px}
input,select,textarea{
  width:100%;background:#12151b;border:1px solid var(--line);border-radius:10px;
  color:var(--text);padding:11px 13px;font-size:14px;font-family:inherit;outline:none;transition:.15s;
}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(16,163,127,.14)}

.hint{display:flex;gap:10px;background:#121a18;border:1px solid #1f3b34;border-radius:10px;padding:12px 14px;font-size:13px;color:#9fd8c8;margin-bottom:14px}
.err{background:#2a1618;border:1px solid #5a2a2c;color:#ff9a9f;border-radius:10px;padding:11px 13px;font-size:13px;margin-top:12px}
.ok-box{background:#0f1f18;border:1px solid #1f4b39;color:#8fe0bb;border-radius:10px;padding:11px 13px;font-size:13px}

.grid{display:grid;gap:14px}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}

.plan{border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--panel-2);cursor:pointer;transition:.15s;position:relative}
.plan:hover{border-color:#39404e;transform:translateY(-1px)}
.plan.sel{border-color:var(--brand);box-shadow:0 0 0 3px rgba(16,163,127,.14)}
.plan .name{font-weight:650;margin-bottom:4px}
.plan .desc{font-size:12.5px;color:var(--muted);min-height:36px}
.plan .price{font-size:22px;font-weight:700;color:var(--brand);margin-top:8px}
.plan .price small{font-size:12px;color:var(--muted);font-weight:400}
.plan .badge{position:absolute;top:12px;right:12px;font-size:11px;padding:2px 8px;border-radius:999px;background:#1f3b34;color:#8fe0bb}

.user-chip{display:inline-flex;align-items:center;gap:8px;background:var(--panel-2);border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:13px}
.user-chip .dot{width:7px;height:7px;border-radius:50%;background:var(--ok)}

.empty{text-align:center;color:var(--muted);padding:40px 0;font-size:13px}
.foot{margin-top:26px;text-align:center;color:#5b6270;font-size:12px}

/* USDT 支付页 */
.pay-page{max-width:480px;margin:0 auto}
.pay-amount-box{text-align:center;padding:30px 0 20px}
.pay-amount-box .amt{font-size:36px;font-weight:700;color:var(--gold)}
.pay-amount-box .unit{font-size:16px;color:var(--muted);margin-left:6px}
.pay-amount-box .expire{margin-top:10px;font-size:13px;color:var(--warn)}
.qr-box{display:flex;justify-content:center;padding:20px 0}
.qr-box img{width:180px;height:180px;border-radius:12px;background:#fff;padding:10px}
.pay-info{background:var(--panel-2);border:1px solid var(--line);border-radius:12px;padding:16px;margin-top:16px}
.pay-info .row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid #22262f;font-size:13px}
.pay-info .row:last-child{border-bottom:none}
.pay-info .row .k{color:var(--muted);white-space:nowrap;margin-right:12px}
.pay-info .row .v{color:var(--text);text-align:right;word-break:break-all;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}
.pay-info .row .copy-btn{margin-left:8px;flex:none}
.pay-warn{background:#2b2113;border:1px solid #594213;border-radius:10px;padding:12px 14px;font-size:12.5px;color:#f0b464;margin-top:16px;display:flex;gap:10px}
.pay-warn .i{flex:none}
.pay-actions{display:flex;gap:10px;margin-top:20px}
.pay-actions .btn{flex:1}
.status-badge{display:inline-block;font-size:11.5px;padding:2px 8px;border-radius:999px}
.status-badge.pending{background:#2b2113;color:#f0b464}
.status-badge.paid{background:#0f2a1f;color:#6fd6a6}
.status-badge.expired{background:#2a1618;color:#ff8a8f}
.status-badge.cancelled{background:#232833;color:var(--muted)}

.order-list{list-style:none;padding:0;margin:0}
.order-list li{background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin-bottom:10px}
.order-list .ol-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.order-list .ol-plan{font-weight:600}
.order-list .ol-meta{font-size:12px;color:var(--muted)}