:root {
  --bg: #faf6ef;
  --card: #ffffff;
  --ink: #3a3230;
  --ink-soft: #6f635c;
  --accent: #b03a2e;
  --accent-dark: #8f2f24;
  --gold: #c9a227;
  --line: #e7ded0;
  --green: #27ae60;
  --blue: #2c7bbe;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  line-height: 1.75;
  font-size: 16px;
}

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

/* ---------- header ---------- */
.site-header {
  background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent) 60%, #c9564a 100%);
  color: #fff;
  padding: 34px 20px 26px;
  text-align: center;
}
.site-header h1 { margin: 0 0 6px; font-size: 26px; letter-spacing: 2px; }
.site-header .sub { font-size: 14px; opacity: .9; }
.site-header .dates { margin-top: 10px; font-size: 15px; opacity: .95; }

/* ---------- nav ---------- */
.site-nav {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-nav .inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 8px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14.5px;
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
}
.site-nav a.active, .site-nav a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ---------- cards & sections ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px 24px;
  margin: 20px 0;
}
h2 {
  font-size: 20px;
  margin: 0 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--accent);
  line-height: 1.4;
}
h3 { font-size: 17px; margin: 22px 0 10px; color: var(--accent-dark); }
p { margin: 10px 0; }
ul, ol { padding-left: 22px; margin: 10px 0; }
li { margin: 5px 0; }
strong { color: var(--accent-dark); }

.muted { color: var(--ink-soft); font-size: 14px; }
.small { font-size: 13.5px; color: var(--ink-soft); }

table { border-collapse: collapse; width: 100%; margin: 14px 0; font-size: 14.5px; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: #f5efe4; white-space: nowrap; }

/* ---------- gate ---------- */
.gate-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.gate-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 40px 34px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  box-shadow: 0 8px 30px rgba(90, 60, 30, .08);
}
.gate-card .logo { font-size: 44px; }
.gate-card h1 { font-size: 22px; margin: 14px 0 4px; letter-spacing: 2px; }
.gate-card .hint { font-size: 14px; color: var(--ink-soft); margin-bottom: 22px; }
.gate-card input {
  width: 100%;
  padding: 12px 14px;
  font-size: 18px;
  letter-spacing: 2px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  outline: none;
  text-align: center;
}
.gate-card input:focus { border-color: var(--accent); }
.gate-card button {
  margin-top: 16px;
  width: 100%;
  padding: 12px;
  font-size: 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
}
.gate-card button:hover { background: var(--accent-dark); }
.gate-error { color: var(--accent); font-size: 13.5px; margin-top: 12px; min-height: 20px; }

/* ---------- itinerary day blocks ---------- */
.day { border-left: 3px solid var(--gold); padding-left: 16px; margin: 18px 0; }
.day h3 { margin-top: 6px; }
.badge {
  display: inline-block;
  font-size: 12.5px;
  background: #f5efe4;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 10px;
  color: var(--ink-soft);
  margin-right: 6px;
}
.badge.hot { background: #fbeae7; border-color: #eac3bd; color: var(--accent); }

/* ---------- figures ---------- */
figure { margin: 18px 0; text-align: center; }
figure img { max-width: 100%; border-radius: 10px; border: 1px solid var(--line); }
figure svg.route { max-width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line); background: #fff; }
figcaption { font-size: 13px; color: var(--ink-soft); margin-top: 6px; }

pre.ascii {
  background: #2f2a26;
  color: #e8dfd2;
  padding: 16px;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
  font-family: "Cascadia Mono", Consolas, monospace;
}

/* ---------- speech blocks ---------- */
.speech { border-top: 1px dashed var(--line); padding-top: 12px; margin-top: 12px; }
.speech .label {
  display: inline-block;
  font-size: 13px;
  font-weight: bold;
  color: #fff;
  background: var(--blue);
  border-radius: 6px;
  padding: 1px 10px;
  margin-bottom: 6px;
}

/* ---------- tips ---------- */
.tip { margin: 10px 0; padding: 10px 14px; border-radius: 8px; background: #fdf9f2; border: 1px solid var(--line); font-size: 14.5px; }
.tip .tag { font-weight: bold; }
.tip.official .tag { color: var(--accent); }
.tip.report .tag { color: var(--gold); }
.tip.common .tag { color: var(--blue); }

/* ---------- footer ---------- */
.site-footer { text-align: center; color: var(--ink-soft); font-size: 12.5px; padding: 30px 20px 40px; }

/* ---------- mobile-first responsiveness ---------- */
@media (max-width: 560px) {
  body { font-size: 15px; line-height: 1.7; }
  .container { padding: 0 12px 48px; }
  .card { padding: 14px 14px; border-radius: 10px; margin: 14px 0; }
  h2 { font-size: 18px; }
  h3 { font-size: 15.5px; }
  .site-header { padding: 24px 14px 18px; }
  .site-header h1 { font-size: 21px; letter-spacing: 1px; }
  .site-header .sub { font-size: 13px; }
  .site-header .dates { font-size: 13.5px; }
  table { font-size: 13px; display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  th, td { padding: 6px 8px; }
  pre.ascii { font-size: 11.5px; padding: 12px; }
  .gate-card { padding: 30px 22px; }
  .gate-card input { font-size: 16px; }
  .tip { font-size: 13.5px; padding: 8px 10px; }
  .speech .label { font-size: 12.5px; }
  /* 导航横向滚动，避免换行占三行 */
  .site-nav .inner { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; padding: 8px 12px; gap: 0 16px; }
  .site-nav a { white-space: nowrap; font-size: 14px; padding: 6px 0; }
}

/* 触屏目标足够大 */
@media (pointer: coarse) {
  a, button, input, summary { min-height: 44px; }
  .site-nav a { min-height: 40px; }
  summary { padding: 8px 0; }
}

/* 系统深色模式跟随 */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1e1a17;
    --card: #2a2521;
    --ink: #e8e0d6;
    --ink-soft: #a89c90;
    --line: #3d362f;
  }
  th { background: #332d27; }
  .badge { background: #332d27; border-color: var(--line); color: var(--ink-soft); }
  .badge.hot { background: #3a2723; border-color: #5c352f; color: #e08a80; }
  .tip { background: #302a25; }
  pre.ascii { background: #171412; }
  figure img, figure .route { border-color: var(--line); }
  .gate-card { box-shadow: 0 8px 30px rgba(0,0,0,.4); }
}