:root {
  --ink: #1C1917;
  --cream: #FAF9F7;
  --rule: #E7E5E4;
  --muted: #A8A29E;
  --mid: #78716C;
  --stone: #57534E;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #FAF9F7;
    --cream: #1C1917;
    --rule: #2E2A27;
    --muted: #A8A29E;
    --mid: #D6D3D1;
    --stone: #E7E5E4;
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--cream);
  color: var(--ink);
  font-family: 'DM Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  transition: background 0.7s ease, color 0.7s ease;
}

header {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px 24px;
}

.wordmark {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.wordmark a {
  color: var(--ink);
  text-decoration: none;
}

.tagline {
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.06em;
  margin-top: 4px;
}

.divider {
  max-width: 640px;
  margin: 0 auto;
  border: none;
  border-top: 1px solid var(--rule);
}

.lbl {
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 40px 24px;
}

main > .lbl { margin-bottom: 32px; }

a { color: var(--ink); text-decoration: none; }
a:hover { border-bottom: 1px solid var(--ink); }

article {
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--rule);
}

article:last-child { border-bottom: none; padding-bottom: 0; }

article time {
  display: block;
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

article h2 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

article h2 a { border-bottom: 1px solid var(--rule); padding-bottom: 1px; transition: border-color 0.2s; }
article h2 a:hover { border-color: var(--ink); }

article p, article .abstract {
  font-size: 15px;
  line-height: 1.6;
  color: var(--mid);
}

.body { white-space: pre-wrap; color: var(--mid); }

.body.long-form {
  white-space: normal;
  color: var(--ink);
}

.long-form h1 {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 48px 0 16px;
  color: var(--ink);
}

.long-form h2 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 40px 0 12px;
  color: var(--ink);
}

.long-form h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 32px 0 8px;
  color: var(--ink);
}

.long-form p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--mid);
  margin-bottom: 16px;
}

.long-form a {
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: border-color 0.2s;
}
.long-form a:hover { border-color: var(--ink); }

.long-form ul, .long-form ol {
  margin: 16px 0;
  padding-left: 24px;
  color: var(--mid);
}

.long-form li {
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 8px;
}

.long-form pre {
  background: var(--rule);
  border-radius: 4px;
  padding: 16px;
  margin: 24px 0;
  overflow-x: auto;
  font-family: 'IBM Plex Mono', 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink);
}

.long-form code {
  font-family: 'IBM Plex Mono', 'Courier New', monospace;
  font-size: 14px;
}

.long-form p code {
  background: var(--rule);
  border-radius: 3px;
  padding: 2px 6px;
  font-size: 13px;
}

.long-form blockquote {
  border-left: 2px solid var(--rule);
  padding-left: 16px;
  margin: 24px 0;
  color: var(--stone);
  font-style: italic;
}

.long-form strong { color: var(--ink); font-weight: 600; }

footer {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 24px 48px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

footer a {
  color: var(--muted);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: border-color 0.2s;
}
footer a:hover { border-color: var(--muted); }

@media (max-width: 480px) {
  header { padding: 32px 20px 20px; }
  main { padding: 32px 20px; }
  footer { padding: 20px 20px 32px; flex-direction: column; gap: 8px; }
  .wordmark { font-size: 20px; }
}

body { padding-bottom: 40px; }

.webring {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 8px 0 calc(8px + env(safe-area-inset-bottom, 0px));
  font-size: 11px;
  letter-spacing: 0.06em;
  background: var(--cream);
  border-top: 1px solid var(--rule);
  z-index: 1000;
}

.webring-name { color: var(--muted); }

.webring a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: none;
  transition: color 0.2s;
}
.webring a:hover { color: var(--mid); border-bottom: none; }