:root {
  color-scheme: light dark;
  --bg: #fff;
  --text: #111;
  --muted: #676767;
  --line: #dedede;
  --soft: #f7f7f5;
  --accent: #005b55;
  --measure: 68ch;
  --font: ui-serif, Charter, "Bitstream Charter", "Sitka Text", Cambria, serif;
  --ui: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

[data-theme="dark"] {
  --bg: #111;
  --text: #f1f1ec;
  --muted: #aaa;
  --line: #333;
  --soft: #181815;
  --accent: #7fd8ce;
}

* { box-sizing: border-box; }
html { background: var(--bg); color: var(--text); font: 18px/1.65 var(--font); text-rendering: optimizeLegibility; }
body { margin: 0; min-width: 280px; }
a { color: inherit; text-decoration-thickness: .06em; text-underline-offset: .18em; }
button, input, textarea { font: inherit; }
button { color: inherit; }
.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 1rem; top: 1rem; z-index: 10; background: var(--bg); border: 1px solid var(--line); padding: .4rem .6rem; }

.topbar {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  font: 13px/1 var(--ui);
  justify-content: space-between;
  min-height: 46px;
  padding: 0 clamp(16px, 4vw, 56px);
}
.brand { font-weight: 650; text-decoration: none; }
.topbar nav { align-items: center; display: flex; gap: 16px; }
.topbar nav a { color: var(--muted); text-decoration: none; }
.topbar nav a:hover { color: var(--text); }
.theme-toggle { background: transparent; border: 0; cursor: pointer; font: 18px/1 var(--ui); padding: 6px; }

.home, .archive, .reader {
  margin: 0 auto;
  max-width: min(100vw - 32px, 1120px);
  padding: clamp(38px, 8vw, 96px) 0;
}
.intro, .latest, .index-list, .archive h1, .archive-list, .reader article {
  margin-left: auto;
  margin-right: auto;
  max-width: var(--measure);
}
.intro h1 {
  font: 500 clamp(2.15rem, 5vw, 4.9rem)/.98 var(--font);
  letter-spacing: 0;
  margin: 0 0 22px;
  max-width: 11ch;
}
.intro p, .latest p, .index-list li p {
  color: var(--muted);
  margin: 0;
}
.latest {
  border-block: 1px solid var(--line);
  margin-top: clamp(44px, 9vw, 108px);
  padding: 24px 0 28px;
}
.label {
  color: var(--accent);
  font: 700 12px/1 var(--ui);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.latest h2 {
  font: 500 clamp(1.45rem, 3vw, 2.4rem)/1.1 var(--font);
  margin: 10px 0 10px;
}
.latest h2 a, .index-list a, .archive-list a { text-decoration: none; }
.latest h2 a:hover, .index-list a:hover, .archive-list a:hover { text-decoration: underline; }
.index-list { margin-top: 42px; }
.index-list h2, .archive h1 {
  font: 650 13px/1 var(--ui);
  letter-spacing: .08em;
  margin: 0 0 18px;
  text-transform: uppercase;
}
.index-list ol, .archive-list { list-style: none; margin: 0; padding: 0; }
.index-list li {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 8px 18px;
  grid-template-columns: 1fr auto;
  padding: 18px 0;
}
.index-list li a { font-size: 1.18rem; line-height: 1.25; }
.index-list time, .archive-list time, .meta {
  color: var(--muted);
  font: 13px/1.4 var(--ui);
}
.index-list li p { grid-column: 1 / -1; }

.archive-list li {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 20px;
  grid-template-columns: 112px 1fr;
  padding: 14px 0;
}

.reader { max-width: min(100vw - 32px, 980px); }
.article-head { margin-bottom: clamp(38px, 8vw, 78px); }
.back {
  color: var(--muted);
  display: inline-block;
  font: 13px/1 var(--ui);
  margin-bottom: 26px;
  text-decoration: none;
}
.article-head h1 {
  font: 500 clamp(2.25rem, 7vw, 5.8rem)/.98 var(--font);
  letter-spacing: 0;
  margin: 0 0 22px;
}
.meta { display: flex; flex-wrap: wrap; gap: 10px 16px; }
.prose { max-width: var(--measure); }
.prose p, .prose ul, .prose blockquote, .prose pre { margin: 0 0 1.25rem; }
.prose h2, .prose h3, .prose h4 {
  font-family: var(--ui);
  font-weight: 720;
  letter-spacing: 0;
  line-height: 1.15;
  margin: 2.2rem 0 .7rem;
}
.prose h2 { font-size: 1.35rem; }
.prose h3 { font-size: 1.08rem; }
.prose blockquote {
  border-left: 2px solid var(--accent);
  color: var(--muted);
  padding-left: 1rem;
}
.prose code {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  font: .9em/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  padding: .06rem .25rem;
}
.prose pre {
  background: var(--soft);
  border: 1px solid var(--line);
  overflow: auto;
  padding: 1rem;
}
.prose pre code { border: 0; padding: 0; }
.article-foot {
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  font: 13px/1 var(--ui);
  gap: 16px;
  margin-top: 3rem;
  padding-top: 18px;
}
.article-foot button, .article-foot a {
  background: transparent;
  border: 0;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  text-decoration: none;
}
.article-foot button:hover, .article-foot a:hover { color: var(--text); }

@media (min-width: 1500px) {
  html { font-size: 20px; }
  .home, .archive, .reader { max-width: 1280px; }
}

@media (max-width: 620px) {
  html { font-size: 17px; }
  .topbar { padding-inline: 14px; }
  .topbar nav { gap: 12px; }
  .intro h1 { max-width: 10ch; }
  .index-list li, .archive-list li { display: block; }
  .index-list time, .archive-list time { display: block; margin-top: 8px; }
}