:root {
  --bg: #0e1420;
  --card: #171f2e;
  --card2: #1d2738;
  --line: #2a3550;
  --text: #e8edf5;
  --muted: #8fa0b8;
  --accent: #4f8cff;
  --gold: #f5c542;
  --green: #3ecf8e;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  min-height: 100vh;
}

.nav {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
  overflow-x: auto;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 8px;
  white-space: nowrap;
  font-size: 14px;
}

.nav a.active, .nav a:hover {
  color: var(--text);
  background: var(--card2);
}

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 20px 16px 60px;
}

.hero {
  text-align: center;
  padding: 26px 10px 20px;
}

.hero h1 {
  font-size: 28px;
  letter-spacing: 2px;
}

.hero .sub {
  color: var(--muted);
  margin-top: 8px;
  font-size: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 14px;
}

.card h3 { font-size: 16px; margin-bottom: 8px; }
.card .meta { color: var(--muted); font-size: 13px; margin-top: 6px; }

.pill {
  display: inline-block;
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 20px;
  background: var(--card2);
  color: var(--muted);
  margin-left: 6px;
}

.pill.gold { background: rgba(245, 197, 66, .15); color: var(--gold); }
.pill.green { background: rgba(62, 207, 142, .15); color: var(--green); }
.pill.blue { background: rgba(79, 140, 255, .15); color: var(--accent); }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  text-align: left;
  padding: 9px 8px;
  border-bottom: 1px solid var(--line);
}

th { color: var(--muted); font-weight: 500; font-size: 13px; }

button, input, textarea, select {
  font-family: inherit;
  font-size: 14px;
}

button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 9px 18px;
  cursor: pointer;
}

button.secondary { background: var(--card2); color: var(--text); }

input, textarea, select {
  width: 100%;
  background: var(--card2);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  padding: 9px 12px;
  margin: 4px 0 12px;
}

textarea { min-height: 80px; resize: vertical; }
label { font-size: 13px; color: var(--muted); display: block; margin-top: 6px; }

.row { display: flex; gap: 10px; flex-wrap: wrap; }
.row > div { flex: 1; min-width: 140px; }

.msg {
  padding: 10px 12px;
  border-radius: 8px;
  margin: 10px 0;
  font-size: 14px;
  display: none;
}

.msg.ok { display: block; background: rgba(62, 207, 142, .12); color: var(--green); }
.msg.err { display: block; background: rgba(255, 90, 90, .12); color: #ff8f8f; }

.seed {
  background: var(--card2);
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 10px;
  font-size: 13px;
  word-break: break-all;
  color: var(--muted);
  margin-top: 8px;
}

.empty { color: var(--muted); text-align: center; padding: 30px 0; }

@media (max-width: 560px) {
  .hero h1 { font-size: 22px; }
}