@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:opsz,wght@9..40,400;9..40,500;9..40,600;9..40,700&family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=Noto+Sans+JP:wght@400;500;600;700&family=Noto+Sans+KR:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

:root {
  --forest: #172b27;
  --pine: #29483d;
  --moss: #577a63;
  --lichen: #aec19d;
  --mist: #dfe6d3;
  --paper: #f7f7ef;
  --chalk: #f1f0e8;
  --ink: #19302b;
  --brick: #dd6040;
  --sun: #eab64f;
  --rule: rgba(25, 48, 43, 0.16);
  --display: "Fraunces", Georgia, serif;
  --body: "DM Sans", Arial, sans-serif;
  --mono: "DM Mono", monospace;
  --shell: min(1160px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--body); font-size: 16px; line-height: 1.55; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--brick); }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: var(--shell); margin: 0 auto; }
.skip-link { position: fixed; top: -5rem; left: 1rem; z-index: 20; padding: .7rem 1rem; color: white; background: var(--forest); border-radius: 3px; }
.skip-link:focus { top: 1rem; }

.site-header { position: absolute; top: 0; left: 0; right: 0; z-index: 4; color: #fff; border-bottom: 1px solid rgba(255,255,255,.24); }
.header-inner { min-height: 80px; display: flex; align-items: center; gap: 2rem; }
.wordmark { display: inline-flex; align-items: center; gap: .6rem; color: inherit; text-decoration: none; font-size: 1.03rem; font-weight: 500; letter-spacing: .01em; white-space: nowrap; }
.wordmark strong { font-weight: 700; }
.wordmark-mark { width: 17px; height: 20px; display: block; background: var(--brick); clip-path: polygon(49% 0,100% 30%,75% 45%,100% 76%,52% 100%,0 76%,25% 45%,0 30%); }
nav { display: flex; gap: 1.4rem; margin-left: auto; }
nav a { font-size: .85rem; font-weight: 600; color: rgba(255,255,255,.92); text-decoration: none; }
.language-picker { display: inline-flex; align-items: center; gap: .45rem; margin-left: .25rem; color: rgba(255,255,255,.88); }
.language-picker-label { font: 500 .62rem/1 var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.language-picker select { min-height: 29px; padding: .25rem 1.55rem .25rem .48rem; color: #fff; border: 1px solid rgba(255,255,255,.42); border-radius: 2px; outline: none; background: rgba(15,36,31,.3); font: 600 .72rem/1 var(--body); cursor: pointer; }
.language-picker select option { color: var(--ink); background: var(--paper); }
.language-picker select:focus-visible { outline: 3px solid var(--sun); outline-offset: 3px; }
.unofficial { margin: 0 0 0 .25rem; padding: .28rem .55rem; color: rgba(255,255,255,.86); border: 1px solid rgba(255,255,255,.38); font: 500 .65rem/1 var(--mono); letter-spacing: .04em; text-transform: uppercase; white-space: nowrap; }

:lang(zh-CN) { --display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; --body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; --mono: "DM Mono", "Noto Sans SC", monospace; }
:lang(ko) { --display: "Noto Sans KR", "Apple SD Gothic Neo", sans-serif; --body: "Noto Sans KR", "Apple SD Gothic Neo", sans-serif; --mono: "DM Mono", "Noto Sans KR", monospace; }
:lang(ja) { --display: "Noto Sans JP", "Hiragino Sans", sans-serif; --body: "Noto Sans JP", "Hiragino Sans", sans-serif; --mono: "DM Mono", "Noto Sans JP", monospace; }
:lang(zh-CN) h1, :lang(ko) h1, :lang(ja) h1 { font-weight: 700; line-height: 1.08; }
:lang(zh-CN) .eyebrow, :lang(ko) .eyebrow, :lang(ja) .eyebrow, :lang(zh-CN) .kicker, :lang(ko) .kicker, :lang(ja) .kicker { letter-spacing: .03em; }

.hero { position: relative; min-height: 738px; display: grid; align-items: end; overflow: hidden; color: #fff; background: var(--forest); }
.hero-image { position: absolute; inset: 0; background: url("assets/big-walk-official-sharing-card.jpg") center 43% / cover no-repeat; transform: scale(1.012); }
.hero-scrim { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(14,31,27,.88) 0%, rgba(14,31,27,.6) 42%, rgba(14,31,27,.18) 72%, rgba(14,31,27,.25) 100%), linear-gradient(0deg, rgba(13,31,27,.75) 0%, transparent 55%); }
.hero-content { position: relative; z-index: 1; padding: 148px 0 48px; }
.eyebrow, .kicker { margin: 0 0 .75rem; color: var(--moss); font: 500 .73rem/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.hero .eyebrow { color: rgba(255,255,255,.8); }
.live-dot { width: 8px; height: 8px; display: inline-block; margin: 0 .5rem 1px 0; background: var(--brick); border-radius: 50%; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 720px; margin-bottom: 1.15rem; font: 600 clamp(3.45rem, 7vw, 6.45rem)/.94 var(--display); letter-spacing: 0; }
.hero-copy { max-width: 560px; margin-bottom: 1.65rem; color: rgba(255,255,255,.91); font-size: 1.12rem; line-height: 1.6; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: .65rem; min-height: 47px; padding: .75rem 1rem; border: 1px solid transparent; border-radius: 2px; font-weight: 700; font-size: .87rem; text-decoration: none; transition: transform .2s ease, background-color .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); text-decoration: none; }
.button-primary { color: #fff; background: var(--brick); }
.button-primary:hover { background: #c94d30; }
.button-quiet { color: #fff; border-color: rgba(255,255,255,.56); background: rgba(15,36,31,.14); }
.button-quiet:hover { border-color: white; background: rgba(15,36,31,.42); }
.hero-status { display: flex; flex-wrap: wrap; gap: 1.9rem; margin-top: 4.25rem; padding-top: 1.05rem; border-top: 1px solid rgba(255,255,255,.36); }
.hero-status div { display: grid; gap: .1rem; min-width: 140px; }
.hero-status span { color: rgba(255,255,255,.67); font: .64rem/1.3 var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.hero-status strong { font-size: .82rem; }

.quick-facts { padding: 78px 0 69px; background: var(--chalk); }
.section-heading h2 { margin-bottom: 1.05rem; color: var(--forest); font: 600 clamp(2.25rem, 4vw, 3.45rem)/1.02 var(--display); letter-spacing: 0; }
.compact-heading { display: flex; align-items: baseline; gap: 1.1rem; }
.compact-heading .kicker { margin: 0; flex: none; }
.compact-heading h2 { margin: 0; }
.facts-grid { display: grid; grid-template-columns: repeat(6, 1fr); margin: 2.3rem 0 1.5rem; border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
.facts-grid div { min-height: 105px; padding: 1rem 1rem .9rem; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.facts-grid dt { margin-bottom: .45rem; color: #6b776e; font: .64rem/1.3 var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.facts-grid dd { margin: 0; font-weight: 700; font-size: .92rem; line-height: 1.35; }
.facts-note { max-width: 665px; margin: 0; font-size: 1.08rem; }

.route-section { padding: 112px 0 106px; background: var(--paper); }
.route-layout { display: grid; grid-template-columns: .92fr 1.28fr; gap: 8.5rem; }
.pinned-heading { max-width: 360px; }
.pinned-heading p:not(.kicker) { color: #53645b; font-size: 1.04rem; }
.text-link { display: inline-flex; gap: .4rem; margin-top: .5rem; color: var(--pine); font-weight: 700; font-size: .88rem; }
.trail-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--rule); }
.trail-list li { display: grid; grid-template-columns: 63px 1fr; gap: 1.15rem; padding: 1.5rem 0; border-bottom: 1px solid var(--rule); }
.trail-number { color: var(--brick); font: 500 .76rem/1.25 var(--mono); letter-spacing: .06em; }
.trail-list h3 { margin-bottom: .3rem; font: 600 1.28rem/1.15 var(--display); }
.trail-list p { margin-bottom: 0; color: #4a5a51; }

.field-notes { padding: 104px 0 112px; color: #f6f8ee; background: var(--forest); }
.field-notes .kicker { color: var(--lichen); }
.field-notes h2 { color: #fff; }
.heading-row { display: flex; justify-content: space-between; gap: 3rem; align-items: end; margin-bottom: 2.5rem; }
.heading-row h2 { margin-bottom: 0; }
.heading-row > p { max-width: 370px; margin: 0 0 .25rem; color: rgba(255,255,255,.71); font-size: .96rem; }
.notes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.18); }
.note-card { min-height: 259px; display: flex; flex-direction: column; padding: 1.5rem; color: var(--ink); background: #f1f0e7; }
.note-card--wide { grid-column: span 2; color: #fff; background: var(--pine); }
.note-topline { display: flex; justify-content: space-between; gap: .8rem; align-items: center; margin-bottom: 1.4rem; color: #6d7d73; font: .6rem/1.3 var(--mono); letter-spacing: .065em; text-transform: uppercase; }
.note-card--wide .note-topline { color: rgba(255,255,255,.68); }
.status { padding: .28rem .45rem; color: var(--ink); border-radius: 2px; font-weight: 500; }
.status-check { background: var(--sun); }
.status-audio { background: #b9cd9c; }
.status-network { color: #fff; background: #668eae; }
.status-device { color: #fff; background: #a26977; }
.note-card h3 { margin-bottom: .65rem; font: 600 1.48rem/1.08 var(--display); }
.note-card p { margin-bottom: 1rem; color: #55635a; font-size: .92rem; line-height: 1.53; }
.note-card--wide p { max-width: 680px; color: rgba(255,255,255,.78); }
.note-card a { margin-top: auto; color: inherit; font-weight: 700; font-size: .83rem; }

.multiplayer-section { padding: 115px 0; background: var(--mist); }
.multiplayer-layout { display: grid; grid-template-columns: 1.02fr .98fr; gap: 8rem; align-items: start; }
.multiplayer-copy h2 { max-width: 430px; }
.multiplayer-copy > p:not(.kicker) { max-width: 480px; color: #45594d; font-size: 1.08rem; }
.button-dark { margin-top: .75rem; color: #fff; background: var(--forest); }
.button-dark:hover { background: #0d1e1a; }
.question-stack { border-top: 1px solid rgba(25,48,43,.25); }
.question-stack details { border-bottom: 1px solid rgba(25,48,43,.25); }
.question-stack summary { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.12rem 0; cursor: pointer; list-style: none; font-weight: 700; font-size: 1rem; }
.question-stack summary::-webkit-details-marker { display: none; }
.question-stack .question-text { min-width: 0; }
.question-stack .question-icon { width: 17px; height: 17px; flex: none; position: relative; border: 1px solid var(--forest); border-radius: 50%; }
.question-stack .question-icon::before, .question-stack .question-icon::after { content: ""; position: absolute; top: 7px; left: 3px; width: 9px; border-top: 1px solid var(--forest); }
.question-stack .question-icon::after { transform: rotate(90deg); transition: transform .18s ease; }
.question-stack details[open] .question-icon::after { transform: rotate(0); }
.question-stack p { max-width: 560px; margin: -.1rem 0 1.25rem; color: #44584d; font-size: .94rem; }

.links-section { padding: 102px 0 113px; background: var(--paper); }
.links-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 2.45rem; border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
.resource-link { min-height: 177px; display: flex; flex-direction: column; gap: .55rem; padding: 1.15rem; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); text-decoration: none; transition: background-color .2s ease; }
.resource-link:hover { background: var(--mist); text-decoration: none; }
.resource-type { color: var(--moss); font: .62rem/1.3 var(--mono); letter-spacing: .065em; text-transform: uppercase; }
.resource-link strong { font: 600 1.18rem/1.1 var(--display); }
.resource-link > span:last-child { margin-top: auto; color: #5d6a63; font-size: .81rem; line-height: 1.45; }
.resource-link b { color: var(--brick); font-size: .9rem; }

.site-footer { padding: 51px 0 45px; color: rgba(255,255,255,.75); background: #10201d; }
.footer-grid { display: grid; grid-template-columns: .85fr 1.5fr; gap: 5rem; }
.footer-wordmark { margin-bottom: 1rem; color: #fff; }
.footer-grid > div > p { max-width: 275px; margin-bottom: 0; font-size: .86rem; }
.footer-notes { display: grid; gap: .9rem; }
.footer-notes p { max-width: 650px; margin: 0; font-size: .75rem; line-height: 1.55; }
.footer-notes a { color: #fff; }

:focus-visible { outline: 3px solid var(--sun); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; } }

@media (max-width: 900px) {
  :root { --shell: min(100% - 36px, 720px); }
  .header-inner { min-height: 70px; }
  nav { display: none; }
  .language-picker { margin-left: auto; }
  .unofficial { display: none; }
  .hero { min-height: 680px; }
  .hero-content { padding-top: 126px; }
  .facts-grid { grid-template-columns: repeat(3, 1fr); }
  .route-layout, .multiplayer-layout { grid-template-columns: 1fr; gap: 3rem; }
  .pinned-heading { max-width: 530px; }
  .notes-grid { grid-template-columns: repeat(2, 1fr); }
  .note-card--wide { grid-column: span 2; }
  .links-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 570px) {
  :root { --shell: calc(100% - 32px); }
  .site-header { border-bottom-color: rgba(255,255,255,.16); }
  .header-inner { min-height: 62px; }
  .wordmark { font-size: .95rem; }
  .wordmark-mark { width: 14px; height: 17px; }
  .language-picker-label { display: none; }
  .language-picker { gap: 0; }
  .language-picker select { max-width: 103px; min-height: 28px; font-size: .68rem; }
  .hero { min-height: 700px; align-items: end; }
  .hero-image { background-position: 61% center; }
  .hero-scrim { background: linear-gradient(90deg, rgba(14,31,27,.88), rgba(14,31,27,.45)), linear-gradient(0deg, rgba(13,31,27,.82), transparent 70%); }
  .hero-content { padding: 105px 0 28px; }
  h1 { font-size: clamp(3.12rem, 16vw, 4.35rem); }
  .hero-copy { font-size: 1rem; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-status { gap: 1rem; margin-top: 2.35rem; }
  .hero-status div { min-width: 101px; }
  .quick-facts, .route-section, .field-notes, .multiplayer-section, .links-section { padding: 68px 0; }
  .compact-heading { display: block; }
  .compact-heading .kicker { margin-bottom: .75rem; }
  .section-heading h2 { font-size: 2.5rem; }
  .facts-grid { grid-template-columns: repeat(2, 1fr); margin-top: 1.7rem; }
  .facts-grid div { min-height: 94px; padding: .85rem .75rem; }
  .facts-note { font-size: 1rem; }
  .route-layout { gap: 2.2rem; }
  .trail-list li { grid-template-columns: 46px 1fr; gap: .65rem; }
  .trail-list h3 { font-size: 1.2rem; }
  .heading-row { display: block; margin-bottom: 1.7rem; }
  .heading-row > p { margin-top: 1.1rem; }
  .notes-grid { grid-template-columns: 1fr; }
  .note-card--wide { grid-column: span 1; }
  .note-card { min-height: 0; }
  .multiplayer-layout { gap: 2.6rem; }
  .links-grid { grid-template-columns: 1fr; margin-top: 1.6rem; }
  .resource-link { min-height: 145px; }
  .footer-grid { gap: 1.5rem; }
}