:root {
  --bg: #f6f7f5;
  --card: #ffffff;
  --ink: #1d2320;
  --muted: #5f6b65;
  --line: #dfe4e0;
  --accent: #0b6e4f;
  --ok: #0b6e4f;
  --warn: #9a5b00;
  --bad: #b3261e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121614; --card: #1b201d; --ink: #e8ece9; --muted: #a3ada7; --line: #2c332f;
    --accent: #4fc49a; --ok: #4fc49a; --warn: #e2a64b; --bad: #f2867e;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, "Microsoft JhengHei", "PingFang TC", sans-serif; }
.bar { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; }
.bar h1 { font-size: 18px; margin: 0; }
.clock { font-size: 13px; color: var(--muted); }
.clock input { font: inherit; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 2px 6px; }
.seg { display: flex; gap: 6px; padding: 0 16px 8px; }
.seg button, .chips button {
  flex: 1; font: inherit; font-size: 14px; padding: 8px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer;
}
.seg button.on, .chips button.on { border-color: var(--accent); color: var(--accent); font-weight: 600; }
main { padding: 0 16px; max-width: 560px; margin: 0 auto; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin: 10px 0; }
.card h2 { font-size: 16px; margin: 0 0 10px; display: flex; align-items: center; gap: 8px; }
.step { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--accent); color: var(--card); font-size: 13px; }
.field { display: block; font-size: 14px; color: var(--muted); margin: 8px 0; }
.field select, .field input { display: block; width: 100%; margin-top: 4px; font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 8px; }
.field input[type=number] { display: inline-block; width: 5em; }
.chips { display: flex; gap: 6px; margin: 8px 0; }
.verdict { border-radius: 10px; padding: 12px; margin-top: 8px; }
.verdict .big { font-size: 22px; font-weight: 700; }
.verdict.ok { background: color-mix(in srgb, var(--ok) 12%, transparent); color: var(--ok); }
.verdict.warn { background: color-mix(in srgb, var(--warn) 14%, transparent); color: var(--warn); }
.verdict.bad { background: color-mix(in srgb, var(--bad) 12%, transparent); color: var(--bad); }
.verdict .sub { color: var(--ink); font-size: 14px; margin-top: 4px; }
.route { margin: 0; padding-left: 20px; }
.route li { margin: 4px 0; }
.trains { list-style: none; padding: 0; margin: 8px 0 0; }
.trains li { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-top: 1px solid var(--line); font-size: 14px; }
.trains li.pick { font-weight: 700; color: var(--accent); }
.trains .risk.bad { color: var(--bad); }
.note { font-size: 13px; color: var(--muted); margin: 8px 0 0; }
.foot { font-size: 12px; color: var(--muted); padding: 8px 16px 24px; max-width: 560px; margin: 0 auto; }