:root {
  --blue: #2778f4;
  --cyan: #22c3ee;
  --navy: #091228;
  --green: #2ec76b;
  --gold: #fabc2e;
  --red: #ef4444;
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --field: #eef2f8;
  --radius: 18px;
  --grad: linear-gradient(90deg, var(--blue), var(--cyan));
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #070d1d;
    --card: #111a2e;
    --text: #e8eefc;
    --muted: #8b9ab8;
    --line: #1f2b45;
    --field: #19243c;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--blue); text-decoration: none; }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px 64px; }
header.top {
  background: radial-gradient(circle at 85% 0%, rgba(34, 195, 238, 0.35), transparent 50%), linear-gradient(135deg, #091228, #12306a);
  color: #fff;
  padding: 18px 0 56px;
}
header.top .wrap { padding-bottom: 0; }
.nav { display: flex; align-items: center; gap: 12px; }
.nav img { width: 40px; height: 40px; border-radius: 10px; }
.nav .brand { font-weight: 700; font-size: 18px; }
.nav .spacer { flex: 1; }
.nav a { color: #cfe3ff; font-size: 15px; }
.hero h1 { font-size: clamp(28px, 6vw, 44px); margin: 40px 0 8px; }
.hero p { color: #b9cdf3; margin: 0; max-width: 560px; }
main.wrap { margin-top: -32px; }
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 18px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.product { border: 1px solid var(--line); border-radius: 16px; padding: 18px; display: flex; flex-direction: column; gap: 8px; }
.product .name { font-weight: 700; font-size: 17px; }
.product .price { font-size: 26px; font-weight: 800; color: var(--blue); }
.product .price.tbd { font-size: 18px; color: var(--muted); }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; background: rgba(39, 120, 244, 0.12); color: var(--blue); }
.pill.gold { background: rgba(250, 188, 46, 0.16); color: #b7860b; }
.pill.green { background: rgba(46, 199, 107, 0.14); color: #1b9a50; }
.models { display: flex; flex-wrap: wrap; gap: 8px; }
.muted { color: var(--muted); font-size: 14px; }
.btn {
  display: inline-flex; justify-content: center; align-items: center; gap: 6px;
  border: 0; border-radius: 999px; padding: 11px 18px; font-size: 15px; font-weight: 600;
  background: var(--grad); color: #fff; cursor: pointer;
}
.btn.soft { background: rgba(39, 120, 244, 0.12); color: var(--blue); }
.btn.danger { background: rgba(239, 68, 68, 0.12); color: var(--red); }
.btn.small { padding: 6px 12px; font-size: 13px; }
.btn:disabled { opacity: 0.5; cursor: default; }
input, select, textarea {
  width: 100%; border: 1px solid transparent; background: var(--field); color: var(--text);
  border-radius: 12px; padding: 11px 13px; font-size: 15px; font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--blue); }
textarea { font-family: ui-monospace, Menlo, monospace; font-size: 13px; }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row > * { flex: 1; }
.row > .btn { flex: 0 0 auto; }
.notice { border-radius: 14px; padding: 12px 14px; font-size: 14px; background: rgba(250, 188, 46, 0.12); }
.notice.ok { background: rgba(46, 199, 107, 0.12); }
.notice.err { background: rgba(239, 68, 68, 0.1); color: var(--red); }
.hidden { display: none !important; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }
.stats { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
.stat { background: var(--field); border-radius: 14px; padding: 12px; }
.stat .v { font-size: 22px; font-weight: 800; }
.stat .k { font-size: 12px; color: var(--muted); }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.tabs button { border: 0; background: var(--card); color: var(--text); padding: 8px 14px; border-radius: 999px; cursor: pointer; font-size: 14px; }
.tabs button.on { background: var(--grad); color: #fff; }
dialog { border: 0; border-radius: var(--radius); background: var(--card); color: var(--text); width: min(420px, 92vw); padding: 22px; }
dialog::backdrop { background: rgba(0, 0, 0, 0.45); }
footer { text-align: center; color: var(--muted); font-size: 13px; padding: 24px 16px; }
code.codebox { display: block; white-space: pre-wrap; background: var(--field); padding: 12px; border-radius: 12px; font-size: 14px; }