@font-face {
  font-family: LucidaGrande;
  src: url('/fonts/LucidaGrande.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}
/* Static project pages share the desktop's Aqua type and neutral colors. */
:root {
  color-scheme: light dark;
  --page-bg: #ececec;
  --text: #000;
  --secondary: #4b4b4b;
  --link: #2765ca;
  --separator: #c8c8cc;
  font-family: LucidaGrande, 'Lucida Grande', system-ui, sans-serif;
  color: var(--text);
  background: var(--page-bg);
}
* { box-sizing: border-box; }
body { margin: 0; font-size: 16px; line-height: 1.7; }
a { color: var(--link); text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--link); outline-offset: 5px; }
main:focus { outline: none; }
.site-header, main, .site-footer { width: min(100% - 48px, 720px); margin-inline: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--text); font-weight: 600; text-decoration: none; }
.brand img { flex: none; }
.site-header nav { display: flex; gap: 24px; font-size: 14px; }
.site-header nav a { display: inline-flex; align-items: center; min-height: 44px; }
main { padding-block: 36px 0; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 12px; color: var(--secondary); font-size: 14px; margin-bottom: 24px; }
h1 { font-size: clamp(28px, 5vw, 36px); font-weight: 600; line-height: 1.2; letter-spacing: -.02em; margin: 0 0 20px; }
h2 { font-size: 22px; font-weight: 600; line-height: 1.3; margin: 0 0 16px; }
p { margin: 0 0 20px; }
.intro { font-size: 20px; line-height: 1.5; }
.primary-link { display: inline-flex; align-items: center; min-height: 44px; margin-top: 4px; padding: 8px 20px; border-radius: 6px; background: #2765ca; color: #fff; font-size: 14px; text-decoration: none; }
.primary-link:hover { background: #2055ac; }
section { margin-top: 48px; }
section > :last-child { margin-bottom: 0; }
.app-list { padding-left: 22px; margin: 0; }
.app-list li + li { margin-top: 12px; }
details + details { border-top: 1px solid var(--separator); }
summary { min-height: 48px; padding: 12px 0; cursor: pointer; }
details p { margin: 0 0 20px; color: var(--secondary); }
.site-footer { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; padding-block: 48px 32px; font-size: 13px; color: var(--secondary); }
.site-footer a { display: inline-flex; align-items: center; min-height: 44px; }
.site-footer span { align-self: center; }
.skip-link { position: fixed; top: 8px; left: 12px; padding: 12px; background: var(--page-bg); z-index: 2; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
@media (max-width: 540px) {
  .site-header { flex-wrap: wrap; gap: 12px; padding-block: 20px 0; }
  .site-header nav { width: 100%; }
  main { padding-top: 28px; }
  .intro { font-size: 18px; }
  section { margin-top: 36px; }
  .site-footer { padding-top: 36px; }
}
@media (prefers-color-scheme: dark) {
  :root { --page-bg: #2b2b2e; --text: #f4f4f5; --secondary: #c8c8cc; --link: #6ba3ff; --separator: #505055; }
  .primary-link { background: #6ba3ff; color: #101827; }
  .primary-link:hover { background: #91bbff; }
}