:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: #111;
  background: #fff;
  line-height: 1.9;
  -webkit-text-size-adjust: 100%;
}

* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; text-underline-offset: 0.2em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid #111; outline-offset: 4px; }
.container { width: min(100% - 3rem, 48rem); margin-inline: auto; }
.site-header { border-bottom: 1px solid #ddd; }
.header-inner { padding-block: 1.25rem; }
.site-name { font-size: 1.125rem; font-weight: 700; text-decoration: none; }
nav ul { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; list-style: none; margin: 0.75rem 0 0; padding: 0; }
nav a { display: inline-block; padding-block: 0.5rem; font-size: 0.9375rem; }
nav a[aria-current="page"] { font-weight: 700; text-decoration-thickness: 2px; }
main.container { padding-block: 3rem 4rem; }
h1 { margin: 0 0 1.5rem; font-size: clamp(1.75rem, 4.5vw, 2.25rem); line-height: 1.5; letter-spacing: 0.01em; }
h2 { margin: 0 0 1rem; font-size: 1.25rem; line-height: 1.6; }
p { margin: 0 0 1rem; overflow-wrap: anywhere; }
section { margin-top: 2.5rem; }
.lead { font-size: 1.125rem; }
.date { color: #595959; font-size: 0.9375rem; }
.contact-email { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.page-links { list-style: none; padding: 0; margin: 0; border-top: 1px solid #ddd; }
.page-links li { border-bottom: 1px solid #ddd; }
.page-links a { display: block; padding: 1.25rem 0; text-decoration: none; }
.link-title { display: block; font-weight: 700; text-decoration: underline; text-underline-offset: 0.2em; }
.link-description { display: block; margin-top: 0.25rem; color: #595959; font-size: 0.9375rem; }
.site-footer { border-top: 1px solid #ddd; padding-block: 1.5rem; color: #595959; font-size: 0.875rem; }
.site-footer p { margin: 0; }
.skip-link { position: absolute; top: 0.5rem; left: 1rem; z-index: 1; padding: 0.5rem 1rem; background: #fff; transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }

@media (max-width: 30rem) {
  .container { width: calc(100% - 2rem); }
  main.container { padding-block: 2rem 3rem; }
  nav ul { column-gap: 1rem; }
}