:root{
  --bg:#f6f7f9;--card:#fff;--ink:#1b1f27;--dim:#6b7280;--line:#e5e7eb;
  --pri:#2563eb;--ok:#0f9d58;--warn:#b45309;--bad:#dc2626;--radius:12px
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
a{color:var(--pri);text-decoration:none}a:hover{text-decoration:underline}
main{max-width:1080px;margin:0 auto;padding:20px 16px 40px}
.nav{display:flex;justify-content:space-between;align-items:center;background:#fff;border-bottom:1px solid var(--line);padding:12px 16px;position:sticky;top:0;z-index:5}
.nav .brand{font-weight:700;font-size:17px;color:var(--ink)}
.nav nav{display:flex;gap:14px;align-items:center}
.notice{background:#fff8e6;border-bottom:1px solid #f0e0b0;padding:8px 16px;text-align:center;font-size:14px}
.flash{margin:12px 16px;padding:10px 14px;border-radius:8px;font-size:14px;background:#eef2ff;border:1px solid #dbe3ff}
.flash-ok{background:#e9f7ef;border-color:#bfe6cd}.flash-warn{background:#fff7ed;border-color:#fed7aa}.flash-bad{background:#fef2f2;border-color:#fecaca}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:16px}
.grid{display:grid;gap:16px}.grid.cols3{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.price{color:var(--bad);font-weight:700;font-size:20px}
.dim{color:var(--dim);font-size:13px}
.btn{display:inline-block;background:var(--pri);color:#fff;border:0;border-radius:8px;padding:9px 16px;font-size:15px;cursor:pointer}
.btn:hover{filter:brightness(1.06);text-decoration:none}.btn.sm{padding:5px 10px;font-size:13px}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.big{width:100%;padding:13px;font-size:17px}
.btn.ok{background:var(--ok)}.btn.bad{background:var(--bad)}.btn.warn{background:var(--warn)}
.linkbtn{background:none;border:0;color:var(--pri);cursor:pointer;padding:0;font:inherit}
input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fff}
textarea{min-height:150px}label{display:block;margin:12px 0 4px;font-size:14px;color:var(--dim)}
form.inline{display:inline}table{width:100%;border-collapse:collapse;background:#fff;font-size:14px}
th,td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#fafafa;font-weight:600;color:var(--dim);font-size:13px}
tr:hover td{background:#fcfcfd}
.tag{display:inline-block;padding:2px 8px;border-radius:99px;font-size:12px;border:1px solid var(--line)}
.tag-paid,.tag-ok,.tag-1{background:#e9f7ef;color:#0b6b3a;border-color:#bfe6cd}
.tag-pending,.tag-warn{background:#fff7ed;color:#9a3d06;border-color:#fed7aa}
.tag-closed,.tag-void,.tag-0{background:#f3f4f6;color:#4b5563}
.tag-refunded{background:#fef2f2;color:#991b1b;border-color:#fecaca}
.tag-locked{background:#eef2ff;color:#3730a3;border-color:#dbe3ff}
.tag-idle{background:#ecfdf5;color:#065f46}
.tag-sold{background:#f5f3ff;color:#5b21b6;border-color:#ddd6fe}
.kv{display:grid;grid-template-columns:110px 1fr;gap:6px 12px;font-size:14px}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#f3f4f6;padding:2px 6px;border-radius:6px;user-select:all}
.centered{display:grid;place-items:center;min-height:100vh;background:var(--bg);margin:0}
.box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;width:min(420px,92vw)}
.qr{display:grid;place-items:center;gap:10px}.qr svg{width:230px;height:230px;border:1px solid var(--line);border-radius:10px;background:#fff}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.right{text-align:right}.mt{margin-top:16px}.mb0{margin-bottom:0}
.pager{display:flex;gap:8px;justify-content:center;margin:18px 0;font-size:14px}
.stat{display:grid;place-items:center;text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px}
.stat b{font-size:22px}footer{max-width:1080px;margin:0 auto;padding:18px 16px;color:var(--dim);font-size:13px;border-top:1px solid var(--line)}
.admin{display:flex;min-height:100vh;background:var(--bg)}
.side{width:210px;background:#111827;color:#cbd5e1;padding:16px 12px;flex-shrink:0}
.side .brand{color:#fff;font-weight:700;margin-bottom:12px}
.side nav.stack{display:grid;gap:2px}
.side a{color:#cbd5e1;padding:8px 10px;border-radius:8px;font-size:14px}
.side a:hover{background:#1f2937;text-decoration:none}.side a.on{background:var(--pri);color:#fff}
.adminmain{flex:1;padding:20px;min-width:0;overflow-x:auto}
.adminmain .box{width:auto;max-width:560px}
.lv-ok{color:var(--ok)}.lv-warn{color:var(--warn)}.lv-bad{color:var(--bad)}.lv-info{color:var(--dim)}
.secret{background:#0f172a;color:#e2e8f0;padding:14px;border-radius:10px;font-family:ui-monospace,monospace;user-select:all;white-space:pre-wrap;word-break:break-all}
@media (max-width:760px){.admin{display:block}.side{width:auto}.side nav.stack{grid-template-columns:repeat(3,1fr)}.kv{grid-template-columns:1fr}.grid.cols3{grid-template-columns:1fr}}