:root {
  --content-ink: #05040a;
  --content-panel: rgba(13, 10, 16, .86);
  --content-bone: #e6dcc8;
  --content-dim: #b1a391;
  --content-gold: #d8b26a;
  --content-ember: #c14a2f;
  --content-line: rgba(216, 178, 106, .28);
  --content-body: 'Yu Mincho', 'Hiragino Mincho ProN', 'Noto Serif JP', serif;
  --content-ui: 'Yu Gothic UI', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--content-ink); }

body {
  min-width: 0;
  margin: 0;
  background:
    radial-gradient(circle at 86% 0%, rgba(110, 20, 35, .2), transparent 33rem),
    linear-gradient(180deg, #09070d 0%, var(--content-ink) 48%, #0b080d 100%);
  color: var(--content-bone);
  font-family: var(--content-body);
  font-size: 16px;
  line-height: 1.95;
  overflow-x: hidden;
}

a { color: var(--content-gold); text-underline-offset: .22em; }
a:hover { color: #fff1c8; }
a:focus-visible,
button:focus-visible { outline: 2px solid var(--content-ember); outline-offset: 4px; }

.site-shell { min-height: 100svh; display: flex; flex-direction: column; }
.site-header,
.page,
.site-footer { width: min(900px, calc(100% - 40px)); margin-inline: auto; }

.site-header { padding-top: 25px; }
.site-mark {
  color: var(--content-dim);
  font-family: var(--content-ui);
  font-size: .78rem;
  letter-spacing: .16em;
  text-decoration: none;
}
.site-mark::before { content: '◈'; color: var(--content-ember); margin-right: .65em; }

.page { flex: 1; padding: 48px 0 80px; }
.breadcrumbs { margin-bottom: 28px; font-family: var(--content-ui); font-size: .78rem; color: var(--content-dim); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: .35em .8em; margin: 0; padding: 0; list-style: none; }
.breadcrumbs li:not(:last-child)::after { content: '/'; margin-left: .8em; color: rgba(230, 220, 200, .4); }
.breadcrumbs a { color: var(--content-dim); }

.page-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 210px;
  gap: 40px;
  align-items: end;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--content-line);
}
.page-header.no-image { display: block; }
.kicker {
  margin-bottom: 13px;
  color: var(--content-ember);
  font-family: var(--content-ui);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
}
h1, h2, h3 { font-weight: 400; }
h1 {
  max-width: 700px;
  margin: 0;
  color: var(--content-bone);
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: .06em;
  line-height: 1.35;
  text-wrap: balance;
}
.lede { max-width: 680px; margin: 22px 0 0; color: var(--content-dim); font-size: 1.05rem; }
.page-image {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid var(--content-line);
  object-fit: cover;
  filter: saturate(.82) contrast(1.08);
}
.label {
  display: inline-block;
  margin-top: 20px;
  padding: .22em .75em;
  border: 1px solid rgba(193, 74, 47, .55);
  color: #e5a18e;
  font-family: var(--content-ui);
  font-size: .75rem;
  letter-spacing: .08em;
}

.content-flow { max-width: 740px; margin-top: 42px; }
.content-flow > * + * { margin-top: 1.35em; }
.content-flow h2 {
  margin-top: 2.6em;
  padding-top: .8em;
  border-top: 1px solid var(--content-line);
  color: var(--content-gold);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  letter-spacing: .08em;
  line-height: 1.55;
}
.content-flow h3 { margin-top: 2em; color: var(--content-bone); font-size: 1.15rem; letter-spacing: .06em; }
.content-flow p { margin-block: 1.15em; }
.content-flow strong { color: #f0cfc0; font-weight: 600; }
.content-flow em { color: var(--content-gold); font-style: normal; }

.fact-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 26px 0 34px;
  border-top: 1px solid var(--content-line);
}
.fact-list div { padding: 14px 16px 13px 0; border-bottom: 1px solid rgba(216, 178, 106, .16); }
.fact-list dt { color: var(--content-dim); font-family: var(--content-ui); font-size: .78rem; letter-spacing: .12em; }
.fact-list dd { margin: 2px 0 0; color: var(--content-bone); }

.note {
  margin: 28px 0;
  padding: 18px 20px;
  border-left: 2px solid var(--content-ember);
  background: rgba(13, 10, 16, .65);
  color: var(--content-dim);
}
.note strong { display: block; margin-bottom: 4px; color: var(--content-bone); }

.steps { margin: 22px 0; padding-left: 1.4em; }
.steps li + li { margin-top: .7em; }
.inline-list { padding-left: 1.25em; }
.inline-list li + li { margin-top: .45em; }

.route-table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: .95rem; }
.route-table th, .route-table td { padding: 13px 12px; border-bottom: 1px solid rgba(216, 178, 106, .2); vertical-align: top; text-align: left; }
.route-table th { width: 27%; color: var(--content-gold); font-family: var(--content-ui); font-size: .8rem; font-weight: 400; letter-spacing: .08em; }

.source-list { padding-left: 1.3em; font-family: var(--content-ui); font-size: .9rem; line-height: 1.75; }
.source-list li + li { margin-top: .7em; }
.source-note { color: var(--content-dim); font-size: .9rem; }

.page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: 50px;
  padding-top: 22px;
  border-top: 1px solid var(--content-line);
  font-family: var(--content-ui);
  font-size: .9rem;
}
.page-nav a { text-decoration: none; }
.page-nav a::before { content: '→ '; color: var(--content-ember); }

.site-footer {
  padding: 22px 0 32px;
  border-top: 1px solid rgba(216, 178, 106, .14);
  color: rgba(169, 156, 136, .72);
  font-family: var(--content-ui);
  font-size: .75rem;
  letter-spacing: .08em;
}
.site-footer p { margin: 0; }

@media (max-width: 680px) {
  .site-header, .page, .site-footer { width: min(100% - 28px, 900px); }
  .page { padding-top: 34px; }
  .page-header { grid-template-columns: 1fr; gap: 24px; }
  .page-image { width: min(230px, 72vw); }
}

@media (max-width: 480px) {
  body { font-size: 15px; }
  .fact-list { grid-template-columns: 1fr; }
  .route-table { font-size: .88rem; }
  .route-table th, .route-table td { padding-inline: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}