:root { color-scheme: light; --paper: #f5f7f7; --white: #fff; --ink: #173449; --muted: #536875; --line: #d7e0e3; --blue: #2b647f; --rust: #b64b32; }
* { box-sizing: border-box; }
html { scroll-padding-top: 2rem; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 16px; line-height: 1.85; }
a { color: inherit; text-underline-offset: .3em; }
a:focus-visible { outline: 3px solid var(--rust); outline-offset: 6px; }
.shell { width: min(1180px, calc(100% - 5rem)); margin-inline: auto; }
.site-header { background: var(--ink); color: #fff; }
.header-inner { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.wordmark { display: inline-flex; align-items: center; gap: .65rem; font-size: 1.18rem; font-weight: 750; letter-spacing: .12em; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid #78909f; border-radius: 50%; font-size: 1.4rem; font-weight: 400; }
nav { display: flex; gap: 2rem; font-size: .88rem; }
nav a { color: #e1e8ed; text-decoration: none; padding-block: .6rem; }
nav a:hover { color: #fff; text-decoration: underline; }
.hero { display: grid; grid-template-columns: 1.12fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; padding-block: 5rem 5.5rem; }
.eyebrow { margin: 0 0 1.1rem; font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: .68rem; font-weight: 600; letter-spacing: .13em; color: var(--blue); }
.hero-copy .eyebrow { display: flex; align-items: center; gap: .7rem; font-size: .61rem; letter-spacing: .06em; }
.tiny-line { width: 24px; height: 2px; background: var(--rust); flex-shrink: 0; }
h1, h2, h3, p { overflow-wrap: break-word; }
h1 { margin: 0 0 1.5rem; font-size: clamp(2.5rem, 4.6vw, 3.9rem); line-height: 1.3; letter-spacing: -.055em; font-weight: 750; }
h1 span { color: var(--blue); }
.lead { color: var(--muted); max-width: 29rem; margin: 0 0 2rem; font-size: 1rem; }
.primary-link { display: inline-flex; align-items: center; gap: 2.4rem; background: var(--ink); color: #fff; padding: .85rem 1.25rem; font-size: .9rem; font-weight: 600; text-decoration: none; border: 1px solid var(--ink); }
.primary-link:hover { background: var(--blue); border-color: var(--blue); }
.primary-link span { font-size: 1.35rem; line-height: 1; }
.hero-footnote { margin: 1.5rem 0 0; color: var(--muted); font-size: .75rem; }
.map-panel { position: relative; background: #edf2f1; border: 1px solid #c7d5d9; padding: 1.25rem; }
.map-heading { display: flex; justify-content: space-between; gap: 1rem; font-family: ui-monospace, Consolas, monospace; font-size: .62rem; letter-spacing: .12em; border-bottom: 1px solid #c7d5d9; padding-bottom: .8rem; }
.route-map { display: block; width: 100%; height: auto; margin-block: .5rem; }
.map-caption { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: .5rem 1rem; border-top: 1px solid #c7d5d9; padding-top: .8rem; font-size: .65rem; }
.map-caption span:first-child { display: flex; align-items: center; gap: .4rem; }
.map-caption span:last-child { font-family: ui-monospace, Consolas, monospace; font-size: .49rem; letter-spacing: .04em; }
.map-caption i { display: inline-block; width: 6px; height: 6px; background: var(--rust); border-radius: 50%; }
.walks { border-top: 1px solid var(--line); padding-block: 2.5rem 5rem; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 2rem; }
.section-heading .eyebrow { margin-bottom: .5rem; }
h2 { font-size: clamp(1.6rem, 3vw, 2rem); letter-spacing: -.035em; line-height: 1.5; margin: 0; }
.section-heading > p { color: var(--muted); font-size: .8rem; margin: 0 0 .35rem; }
.walk-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--line); background: var(--white); }
.walk-card { padding: 1.6rem; display: flex; flex-direction: column; }
.walk-card + .walk-card { border-left: 1px solid var(--line); }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: .5rem; min-height: 48px; margin-bottom: 1.8rem; }
.card-number { font-family: ui-monospace, Consolas, monospace; font-size: .58rem; letter-spacing: .03em; color: var(--blue); }
.card-symbol { color: var(--blue); font-size: 2.5rem; line-height: 1; font-family: Georgia, serif; }
h3 { font-size: 1.12rem; line-height: 1.65; margin: 0 0 1rem; font-weight: 650; letter-spacing: -.02em; }
.walk-card p { color: var(--muted); font-size: .87rem; margin: 0 0 1rem; }
.card-bottom { display: flex; justify-content: space-between; align-items: center; gap: .5rem; margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--line); font-size: .68rem; color: var(--blue); }
.card-bottom > span:last-child { color: var(--rust); font-size: 1.2rem; }
.preparation { background: #e8eff2; border-block: 1px solid var(--line); }
.prep-inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: 4rem; padding-block: 4rem; align-items: start; }
.prep-inner h2 { font-size: 2.2rem; line-height: 1.45; }
.prep-inner > div > p:last-child { color: var(--muted); font-size: .87rem; margin: 1.2rem 0 0; }
.packing-list { margin: 0; }
.packing-list > div { padding-block: 1.1rem; border-top: 1px solid #c5d3db; }
.packing-list > div:first-child { padding-top: 0; border-top: 0; }
dt { font-weight: 650; font-size: .95rem; }
dt span { color: var(--blue); font: .7rem ui-monospace, Consolas, monospace; margin-right: 1rem; }
dd { margin: .45rem 0 0 2.1rem; color: var(--muted); font-size: .85rem; }
.about { max-width: 760px; padding-block: 4.5rem; text-align: center; }
.about p:not(.eyebrow) { color: var(--muted); margin: 1.2rem auto 1.5rem; max-width: 38rem; font-size: .92rem; }
.text-link { color: var(--blue); font-size: .85rem; font-weight: 600; }
.text-link:hover { color: var(--rust); }
.site-footer { border-top: 1px solid var(--line); background: var(--white); }
.footer-inner { min-height: 100px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem 2rem; padding-block: 1.5rem; }
.footer-inner .wordmark { font-size: .9rem; }
.footer-inner p { font-family: ui-monospace, Consolas, monospace; font-size: .6rem; letter-spacing: .08em; margin: 0; color: var(--muted); }
.footer-inner > span { font-size: .7rem; color: var(--muted); }
.skip { position: absolute; top: -6rem; left: 1rem; z-index: 5; padding: .6rem 1rem; background: var(--white); color: var(--ink); }
.skip:focus { top: 1rem; }
.not-found { padding-block: 7rem; min-height: calc(100vh - 200px); }
.not-found h1 { max-width: 40rem; }
.not-found > p:not(.eyebrow) { color: var(--muted); margin-bottom: 2rem; }
@media (max-width: 1000px) {
  .shell { width: calc(100% - 3rem); }
  .hero { gap: 2rem; padding-block: 3.5rem; }
  .hero-copy .eyebrow { font-size: .52rem; }
  .walk-card { padding: 1.2rem; }
  .prep-inner { gap: 2rem; }
}
@media (max-width: 720px) {
  .shell { width: calc(100% - 2.5rem); }
  .header-inner { min-height: 76px; gap: 1rem; }
  .wordmark { font-size: .9rem; gap: .4rem; }
  .brand-mark { width: 25px; height: 25px; font-size: 1.1rem; }
  nav { gap: .9rem; font-size: .75rem; }
  .hero { grid-template-columns: 1fr; padding-block: 3rem; gap: 2.5rem; }
  .hero-copy .eyebrow { font-size: .55rem; }
  h1 { font-size: clamp(2.3rem, 8vw, 3.5rem); }
  .lead { max-width: 34rem; }
  .map-panel { max-width: 480px; width: 100%; justify-self: center; }
  .walks { padding-bottom: 3rem; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: .6rem; }
  .walk-grid { grid-template-columns: 1fr; }
  .walk-card { padding: 1.5rem; }
  .walk-card + .walk-card { border-left: 0; border-top: 1px solid var(--line); }
  .card-top { margin-bottom: .8rem; }
  .card-number { font-size: .65rem; }
  .prep-inner { grid-template-columns: 1fr; padding-block: 3rem; }
  .prep-inner h2 { font-size: 1.9rem; }
  .about { padding-block: 3rem; }
  .footer-inner { justify-content: flex-start; }
  .footer-inner p { flex-basis: 100%; order: 3; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }