:root {
  --bg: #111827;
  --panel: #1f2937;
  --amber: #f59e0b;
  --amber-s: #fde68a;
  --ink: #e5e7eb;
  --mute: #9ca3af;
  --line: #374151;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "IBM Plex Sans", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.76;
  font-size: 16px;
}

.dash-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: #0b1220;
  border-bottom: 1px solid var(--line);
}
.dash-head b { color: var(--amber); font-size: 20px; letter-spacing: 0.16em; }
.dash-head nav a {
  color: var(--mute);
  text-decoration: none;
  margin-left: 16px;
  font-size: 14px;
  padding: 6px 10px;
}
.dash-head nav a.current {
  color: #111827;
  background: var(--amber);
  font-weight: 700;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 360px;
}
.split-l {
  padding: 48px 36px;
  background: #0f172a;
}
.split-l h1 { font-size: 32px; line-height: 1.35; margin-bottom: 14px; color: #fff; }
.split-l p { color: var(--mute); margin-bottom: 20px; }
.split-r {
  background: #1a2333;
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  border-left: 1px solid var(--line);
}
.pick {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  background: var(--panel);
}
.pick strong { color: var(--amber); display: block; margin-bottom: 4px; }
.pick.main { border-color: var(--amber); background: #2a2110; }

.dash { max-width: 1100px; margin: 0 auto; padding: 36px 20px 64px; }
.dash h2 { font-size: 22px; color: var(--amber-s); margin: 32px 0 12px; }
.dash h2:first-child { margin-top: 0; }
.dash p { margin-bottom: 12px; color: #d1d5db; }
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 12px 0 18px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 16px;
}
.card h3 { color: var(--amber); font-size: 16px; margin-bottom: 8px; }
table.sel {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 10px 0 16px;
}
table.sel th, table.sel td { border: 1px solid var(--line); padding: 9px; text-align: left; }
table.sel th { background: #243044; color: var(--amber-s); }
.faq dt { margin-top: 16px; font-weight: 700; color: #fff; }
.faq dd { margin: 6px 0 0; color: #d1d5db; }

.tail {
  border-top: 1px solid var(--line);
  padding: 22px 24px;
  font-size: 13px;
  color: var(--mute);
  line-height: 1.8;
  background: #0b1220;
}
.tail .safe { color: var(--amber-s); margin-bottom: 6px; }
.tail a { color: var(--amber); }

@media (max-width: 800px) {
  .split, .cards { grid-template-columns: 1fr; }
  .split-l h1 { font-size: 24px; }
  .dash-head { flex-direction: column; gap: 8px; }
}