:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --card: #1e2a3a;
  --border: #2d3a4f;
  --text: #e7ecf3;
  --muted: #8b9bb4;
  --primary: #3d8bfd;
  --ok: #3dd68c;
  --danger: #f31260;
  --warn: #f5a524;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(1000px 500px at 10% -10%, #1a2a44 0%, var(--bg) 50%);
  color: var(--text);
}
.wrap { max-width: 960px; margin: 0 auto; padding: 24px 20px 64px; }
h1 { margin: 0 0 6px; font-size: 22px; }
.sub { color: var(--muted); font-size: 13px; margin-bottom: 20px; line-height: 1.5; }

.nav { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.nav a {
  color: var(--primary); text-decoration: none; font-size: 12px;
  border: 1px solid var(--border); padding: 6px 12px; border-radius: 999px;
  background: var(--card);
}
.nav a:hover { border-color: var(--primary); }
.nav a.cur { background: rgba(61,139,253,.16); border-color: var(--primary); color: #bcd0ff; }

.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 16px; padding: 18px; margin-bottom: 16px;
}
.section-title {
  font-size: 11px; letter-spacing: .06em; text-transform: uppercase;
  color: var(--muted); font-weight: 600; margin: 0 0 12px;
  display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap;
}
.section-title .right { font-size: 12px; letter-spacing: 0; text-transform: none; font-weight: 500; }

.prompt-box {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: #121a26; color: #e7ecf3;
  font-size: 13px; line-height: 1.65; resize: vertical; outline: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  min-height: 130px;
}
.prompt-box:focus { border-color: var(--primary); }

.insert-group {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 12px;
}
.insert-label { font-size: 11px; color: var(--muted); margin-right: 2px; }
.chip {
  border: 1px solid rgba(61,139,253,.3); background: rgba(61,139,253,.1);
  color: #9ec5ff; border-radius: 999px; padding: 4px 10px;
  font-size: 12px; font-weight: 600; cursor: pointer; transition: all .12s;
}
.chip:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

.hint {
  font-size: 12px; color: var(--muted); line-height: 1.55;
  background: #121a26; border-radius: 10px; padding: 12px 14px;
  border: 1px solid var(--border); margin-bottom: 12px;
}
.hint code { background: #0d121a; padding: 1px 6px; border-radius: 4px; color: #9ec5ff; font-size: 11px; }

.stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px;
}
.stat {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 14px;
}
.stat .k { font-size: 11px; color: var(--muted); }
.stat .v { margin-top: 4px; font-size: 16px; font-weight: 700; word-break: break-all; }
.stat .v.ok { color: var(--ok); }

.btns { display: flex; flex-wrap: wrap; gap: 8px; }
button {
  border: none; border-radius: 10px; padding: 10px 16px;
  font-size: 13px; font-weight: 600; cursor: pointer;
}
button.primary { background: var(--primary); color: #fff; }
button.primary:disabled { opacity: .5; cursor: not-allowed; }
button.ghost {
  background: transparent; color: var(--text); border: 1px solid var(--border);
}
button.ghost:hover { border-color: var(--primary); color: #bcd0ff; }

.msg {
  margin-bottom: 16px; padding: 12px 14px; border-radius: 10px;
  font-size: 13px; line-height: 1.5; display: none; white-space: pre-wrap;
}
.msg.show { display: block; }
.msg.ok { background: rgba(61,214,140,.12); border: 1px solid rgba(61,214,140,.35); color: #b8f0d2; }
.msg.err { background: rgba(243,18,96,.12); border: 1px solid rgba(243,18,96,.35); color: #ffb3c7; }
.msg.info { background: rgba(61,139,253,.12); border: 1px solid rgba(61,139,253,.35); color: #b7d4ff; }