:root {
  --bg: #0b1220;
  --panel: #121a2b;
  --ink: #e8eefc;
  --muted: #93a0b8;
  --line: rgba(148, 163, 184, 0.22);
  --accent: #38bdf8;
  --ok: #34d399;
  --danger: #fb7185;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1000px 500px at 10% -10%, rgba(56, 189, 248, 0.18), transparent 60%),
    radial-gradient(800px 400px at 90% 0%, rgba(52, 211, 153, 0.12), transparent 55%),
    var(--bg);
}

.shell { width: min(980px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 48px; }
.card {
  background: color-mix(in srgb, var(--panel) 92%, white 8%);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  margin-bottom: 16px;
}
h1, h2, h3 { margin: 0 0 12px; letter-spacing: 0.02em; }
.muted { color: var(--muted); font-size: 0.92rem; }
.field { margin-bottom: 14px; }
label { display: block; margin-bottom: 6px; color: var(--muted); font-size: 0.86rem; }
input {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(15, 23, 42, 0.7);
  color: var(--ink);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
}
input:focus { border-color: color-mix(in srgb, var(--accent) 70%, white 30%); }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.btn {
  border: 0;
  border-radius: 10px;
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 600;
}
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #082f49; }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.alert {
  background: rgba(251, 113, 133, 0.12);
  color: #fecdd3;
  border: 1px solid rgba(251, 113, 133, 0.35);
  border-radius: 10px;
  padding: 10px 12px;
  margin: 10px 0;
}
.ok {
  background: rgba(52, 211, 153, 0.12);
  color: #a7f3d0;
  border: 1px solid rgba(52, 211, 153, 0.35);
  border-radius: 10px;
  padding: 10px 12px;
  margin: 10px 0;
}
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
code {
  display: block;
  font-family: ui-monospace, Consolas, monospace;
  background: rgba(2, 6, 23, 0.55);
  border-radius: 8px;
  padding: 8px 10px;
  margin-top: 6px;
  word-break: break-all;
}
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.hidden { display: none !important; }