:root {
  --bg: #0B1220;
  --surface: #131C2E;
  --surface-2: #1B2740;
  --border: #233052;
  --text: #F4F7FF;
  --muted: #A9B4C8;
  --primary: #7C3AED;
  --primary-soft: #A35EC8;
  --accent: #4ADE80;
  --warn: #F59E0B;
  --danger: #F43F5E;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
}
a { color: var(--primary-soft); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-head {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 12px 20px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: rgba(11, 18, 32, 0.96); z-index: 10;
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 700; }
.nav { display: flex; gap: 2px; flex-wrap: wrap; }
.nav a { color: var(--muted); padding: 6px 10px; border-radius: 8px; font-size: 0.95rem; }
.nav a:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }
.nav a.active { color: var(--text); background: var(--primary); }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 8px 12px; font-size: 1.2rem; }

main { max-width: 900px; margin: 0 auto; padding: 24px 20px 60px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 12px 0 8px; }
h2 { font-size: 1.35rem; margin: 34px 0 12px; padding-top: 10px; border-top: 1px solid var(--border); }
h3 { font-size: 1.05rem; margin: 0 0 4px; }
.lede { font-size: 1.08rem; color: var(--text); }
.facts { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px 18px; list-style: none; }
.facts li { padding: 3px 0; }

.hero-fig { margin: 18px 0 0; }
.hero-fig img { width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--border); display: block; }
.hero-fig figcaption { color: var(--muted); font-size: 0.8rem; margin-top: 6px; }
.guide-map { list-style: none; padding: 0; columns: 2; column-gap: 24px; }
.guide-map li { margin: 6px 0; break-inside: avoid; }
@media (max-width: 720px) { .guide-map { columns: 1; } }

.route, .tips { padding-left: 1.2em; }
.route li, .tips li { margin: 10px 0; }
.tips { list-style: none; padding-left: 0; }
.tips li { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; }
.ts { color: var(--muted); font-size: 0.85rem; margin-top: 6px; }

.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
table.data th, table.data td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.data thead th { background: var(--surface-2); }
table.data tbody tr:nth-child(even) { background: var(--surface); }
table.data time { color: var(--muted); }

.code-list { display: flex; flex-direction: column; gap: 10px; }
.code-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; }
button.code { background: var(--primary); color: var(--text); border: none; border-radius: 8px; padding: 10px 14px; font-size: 1rem; font-weight: 700; cursor: pointer; min-height: 44px; display: flex; align-items: center; gap: 8px; }
button.code .copy-hint { font-size: 0.75rem; font-weight: 500; opacity: 0.8; }
button.code.copied { background: var(--accent); color: #05230f; }
.reward { font-weight: 600; }
.src { color: var(--muted); font-size: 0.85rem; }
.chip { display: inline-block; border-radius: 999px; padding: 2px 9px; font-size: 0.78rem; font-weight: 600; }
.chip-active { background: rgba(74, 222, 128, 0.16); color: var(--accent); }
.chip-warn { background: rgba(245, 158, 11, 0.16); color: var(--warn); }

.links { list-style: none; padding: 0; }
.links li { margin: 8px 0; }
.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; margin: 8px 0; padding: 12px 16px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 8px 0 0; color: var(--muted); }

.warn-box { background: rgba(244, 63, 94, 0.1); border: 1px solid var(--danger); border-radius: 10px; padding: 14px 16px; }
.site-foot { border-top: 1px solid var(--border); padding: 22px 20px 40px; color: var(--muted); font-size: 0.9rem; max-width: 900px; margin: 0 auto; }
.site-foot nav { display: flex; gap: 14px; margin-top: 6px; }

@media (max-width: 720px) {
  .nav { display: none; }
  .nav-toggle { display: block; }
  body.nav-open .nav { display: flex; flex-direction: column; width: 100%; }
  .nav a { width: 100%; }
  h1 { font-size: 1.6rem; }
  .code-row { flex-direction: column; align-items: stretch; }
  button.code { width: 100%; justify-content: center; }
}