@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("fonts/inter-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Source Serif 4";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("fonts/source-serif-4-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Source Serif 4";
  font-style: italic;
  font-weight: 400 600;
  font-display: swap;
  src: url("fonts/source-serif-4-italic-latin.woff2") format("woff2");
}

/* Design tokens (spec, Appendix 1). Change colors here only. */
:root {
  color-scheme: light dark;
  --bg: #fef9ef;
  --ink: #141414;
  --accent: #a4243b;
  --muted: color-mix(in srgb, var(--ink) 68%, var(--bg));
  --rule: color-mix(in srgb, var(--ink) 14%, var(--bg));
  --figure: color-mix(in srgb, var(--ink) 7%, var(--bg));

  --serif: "Source Serif 4", Georgia, serif;
  --sans: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151412;
    --ink: #EDEAE2;
    --accent: #ff8a5c;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
}

.page {
  max-width: calc(40rem + 2 * clamp(20px, 5vw, 48px));
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px) 80px;
}

/* Links */
a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid currentColor; outline-offset: 3px; }

/* Header and logo: 40px mark, 44px target */
.site-header { padding: clamp(24px, 5vw, 40px) 0 clamp(40px, 8vw, 80px); }
.logo { display: inline-block; padding: 2px; margin: -2px; line-height: 0; }
.logo img { display: block; object-fit: contain; }

/* Article block */
.article-title {
  margin: 0 0 12px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(2rem, 1.5rem + 2.5vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink);
  overflow-wrap: break-word;
}
.article-title a { text-decoration: none; }
.article-title + .prose { margin-top: clamp(28px, 5vw, 44px); }
.article-date {
  margin: 0 0 clamp(28px, 5vw, 44px);
  font-family: var(--sans);
  font-size: 0.875rem;
  line-height: 1.4;
  color: var(--muted);
}

/* Body text */
.prose {
  font-size: clamp(1.125rem, 1.05rem + 0.4vw, 1.3125rem);
  line-height: 1.65;
  overflow-wrap: break-word;
}
.prose > :first-child { margin-top: 0; }
.prose > :last-child { margin-bottom: 0; }
.prose p { margin: 0 0 1.25em; }
.prose h2, .prose h3 {
  margin: 2em 0 0.75em;
  font-family: var(--sans);
  font-weight: 600;
  line-height: 1.25;
}
.prose h2 { font-size: 1.5rem; }
.prose h3 { font-size: 1.25rem; }
.prose blockquote { margin: 0 0 1.25em 1.5em; font-style: italic; }
.prose ul, .prose ol { margin: 0 0 1.25em; padding-left: 1.25em; }
.prose li + li { margin-top: 0.5em; }
.prose li > ul, .prose li > ol { margin: 0.5em 0 0; }
.prose hr { margin: 2.25rem 0; border: 0; border-top: 1px solid var(--rule); }
.prose code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--figure);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}
.prose pre {
  margin: 0 0 1.25em;
  padding: 1em;
  overflow-x: auto;
  background: var(--figure);
  font-size: 0.875rem;
  line-height: 1.5;
}
.prose pre code { font-size: inherit; background: none; padding: 0; }
.prose table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  margin: 0 0 1.25em;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 0.9375rem;
}
.prose th, .prose td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--rule); text-align: left; }
.prose img { max-width: 100%; height: auto; }
.footnotes { font-size: 0.875em; color: var(--muted); }

/* Figures and video */
figure { margin: 2.25rem 0; }
figure img { display: block; width: 100%; height: auto; background: var(--figure); }
figcaption, .footnotes {
  font-family: var(--sans);
}
figcaption {
  margin-top: 10px;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--muted);
}
.video-frame { position: relative; aspect-ratio: 16 / 9; background: var(--figure); }
.video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* Sections and lists */
.section { margin-top: clamp(56px, 9vw, 96px); }
.archive-year + .archive-year { margin-top: clamp(40px, 6vw, 64px); }
.archive-year:first-of-type { margin-top: clamp(28px, 5vw, 44px); }
.section-heading {
  margin: 0 0 16px;
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--muted);
}
.list { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--rule); }

.post-row {
  display: flex;
  align-items: baseline;
  column-gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--rule);
}
.post-row a {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 1.125rem;
  line-height: 1.4;
  /* Extend the target to 44px without changing the row */
  padding: 10px 0;
  margin: -10px 0;
}
.post-row time {
  flex: 0 0 auto;
  white-space: nowrap;
  font-family: var(--sans);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--muted);
}

.pages-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  column-gap: 24px;
  row-gap: 2px;
  padding: 14px 0;
  border-top: 1px solid var(--rule);
  font-family: var(--sans);
}
.pages-row .nav-link { flex: 0 0 9rem; }
.pages-summary { flex: 1 1 14rem; font-size: 0.9375rem; line-height: 1.5; color: var(--muted); }

/* Navigational links end with an arrow */
.nav-link {
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.5;
  padding: 12px 0;
  margin: -12px 0;
}
.arrow {
  display: inline-block;
  vertical-align: -2px;
  margin-left: 4px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.archive-link { margin: 24px 0 0; line-height: 1.5; }

.site-footer {
  margin-top: clamp(48px, 8vw, 80px);
  font-family: var(--sans);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--muted);
}
.site-footer p { margin: 0; }

/* Print: just the article, in black on white, whatever the screen's color scheme */
@page { margin: 2cm; }
@media print {
  :root {
    color-scheme: light;
    --bg: #fff;
    --ink: #000;
    --accent: #000;
    --muted: #444;
    --rule: #bbb;
    --figure: #f2f2f2;
  }
  .no-print, .video { display: none; }
  .page { max-width: none; padding: 0; }
  .article-title { font-size: 24pt; }
  .article-date { margin-bottom: 18pt; }
  .article-title + .prose { margin-top: 18pt; }
  .prose { font-size: 12pt; line-height: 1.45; orphans: 3; widows: 3; }
  .prose h2 { font-size: 16pt; }
  .prose h3 { font-size: 13pt; }
  .prose h2, .prose h3 { break-after: avoid; }
  .prose li, .prose tr, figure, .prose pre, .prose blockquote { break-inside: avoid; }
  .prose pre { white-space: pre-wrap; overflow: visible; }
  .prose table { display: table; overflow: visible; }
  figure { margin: 18pt 0; }
  figure img { width: auto; max-width: 100%; max-height: 10cm; }
  figcaption { font-size: 9pt; }
}