:root {
  color-scheme: light;
  --ink: #172923;
  --muted: #617069;
  --paper: #f4f2e9;
  --line: #d9ded4;
  --green: #245947;
  --orange: #d97842;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--paper); }
body { min-height: 100vh; margin: 0; color: var(--ink); background: linear-gradient(180deg, #f8f7f0 0%, var(--paper) 38rem); font-family: Georgia, "Times New Roman", serif; }
a { color: inherit; }
.site-header, .page-shell { width: min(100% - 40px, 1080px); margin-inline: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; min-height: 76px; border-bottom: 1px solid var(--line); }
.brand { color: var(--green); font-size: 20px; font-weight: 700; text-decoration: none; }
.header-link, .spot-list small, .article-meta { color: var(--muted); font: 14px/1.5 Arial, sans-serif; }
.page-shell { padding-block: 64px 88px; }
.page-intro { max-width: 680px; margin-bottom: 54px; }
.eyebrow { margin: 0 0 14px; color: var(--orange); font: 700 13px/1.4 Arial, sans-serif; text-transform: uppercase; }
h1, h2 { font-weight: 500; }
.page-intro h1 { margin: 0; font-size: clamp(42px, 7vw, 72px); line-height: 1.02; }
.page-intro p:last-child { max-width: 580px; margin: 20px 0 0; color: var(--muted); font: 17px/1.65 Arial, sans-serif; }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; border-bottom: 1px solid var(--line); }
.section-heading h2 { margin: 0 0 16px; font-size: 30px; }
.search-label { display: block; margin-top: 24px; color: var(--muted); font: 13px Arial, sans-serif; }
#spot-search { width: min(100%, 420px); min-height: 44px; margin-top: 8px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 0; background: white; color: var(--ink); font: 16px Arial, sans-serif; }
.spot-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; margin: 24px 0 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.spot-list li { border-bottom: 1px solid var(--line); }
.spot-list a { display: grid; gap: 6px; min-height: 82px; align-content: center; text-decoration: none; }
.spot-list a:hover span, .spot-list a:focus-visible span { color: var(--green); text-decoration: underline; text-underline-offset: 4px; }
.spot-list span { font-size: 21px; }
.article-shell { width: min(100% - 40px, 760px); margin-inline: auto; padding-block: 64px 96px; }
.article-shell h1 { margin: 0; font-size: clamp(40px, 7vw, 68px); line-height: 1.02; }
.article-meta { margin: 18px 0 28px; }
.simulation-note { margin-bottom: 38px; padding: 16px 18px; border-left: 3px solid var(--orange); background: #fffefa; color: var(--muted); font: 14px/1.6 Arial, sans-serif; }
.article-content { padding-top: 8px; border-top: 1px solid var(--line); font: 17px/1.8 Georgia, "Times New Roman", serif; }
.article-content h2 { margin: 38px 0 10px; font-size: 29px; line-height: 1.2; }
.article-content p, .article-content ul, .article-content ol { margin-block: 12px; }
.article-content ul, .article-content ol { padding-left: 24px; }
.article-content a { color: var(--green); }
@media (max-width: 640px) {
  .site-header, .page-shell { width: min(100% - 32px, 1080px); }
  .site-header { min-height: 66px; }
  .page-shell, .article-shell { padding-top: 44px; }
  .page-intro { margin-bottom: 42px; }
  .spot-list { grid-template-columns: minmax(0, 1fr); }
  .article-shell { width: min(100% - 32px, 760px); }
}