@font-face {
  font-family: "Anthropic Serif";
  src: url("/fonts/AnthropicSerif-Text-Regular-Static.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Anthropic Sans";
  src: url("/fonts/AnthropicSans-Text-Regular-Static.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Anthropic Sans";
  src: url("/fonts/AnthropicSans-Text-Semibold-Static.otf") format("opentype");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
:root {
  --ink: #141413;
  --ink-soft: #30302e;
  --muted: #6f6e68;
  --ivory: #faf9f5;
  --line: #d1cfc5;
  --heather: #d9d2f3;
  --serif: "Anthropic Serif", Georgia, serif;
  --sans: "Anthropic Sans", Arial, sans-serif;
  --page-margin: 64px;
  --max-width: 1400px;
  --reading-width: 640px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
.skip-link {
  position: fixed;
  top: -80px;
  left: 24px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--ivory);
}
.skip-link:focus { top: 12px; }
.page-shell {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-inline: var(--page-margin);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
  padding-block: 16px;
  background: var(--ivory);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 36px;
}
.brand {
  color: var(--ink);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1;
  text-decoration: none;
}
nav { display: flex; align-items: center; gap: 24px; margin-left: auto; }
nav a {
  color: var(--ink);
  font-size: 15px;
  letter-spacing: -0.0025em;
  text-underline-offset: 0.2em;
  text-decoration: none;
}
nav a:hover { text-decoration: underline; }
.menu-button { display: none; }
.hero { padding-block: 96px 48px; background: var(--ivory); }
.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  max-width: 1200px;
  text-align: center;
}
h1, h2, h3, p { margin: 0; }
h1 {
  font-family: var(--serif);
  font-size: clamp(64px, 7.1vw, 102px);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.98;
}
.hero p {
  max-width: 640px;
  margin-top: -10px;
  font-family: var(--serif);
  font-size: 23px;
  line-height: 1.4;
  text-wrap: balance;
}
.content-section { padding-block: 48px; }
.reading-column {
  width: calc(100% - (var(--page-margin) * 2));
  max-width: var(--reading-width);
  margin-inline: auto;
}
.reading-column > h2 {
  margin: 0 0 32px;
  font-size: 32px;
  font-weight: 600;
  line-height: 1.2;
  text-wrap: pretty;
}
.body-copy {
  margin-bottom: 16px;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
}
.body-copy:last-child { margin-bottom: 0; }
.updates { padding-top: 48px; }
.update-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.update { display: flex; flex-direction: column; gap: 8px; }
.update-heading { display: flex; align-items: center; gap: 8px; line-height: 1.3; }
.update-heading h3 { font-size: 15px; font-weight: 600; line-height: inherit; }
.update-heading time { color: var(--muted); }
.label {
  width: fit-content;
  padding: 6px 8px;
  border-radius: 4px;
  background: var(--heather);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
}
.update > p {
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.4;
}
.update > a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  width: fit-content;
  color: var(--muted);
  text-decoration: none;
}
.update > a:hover { text-decoration: underline; }
.prose-section { padding-bottom: 96px; }
footer { padding-block: 64px 28px; background: var(--ink); color: var(--ivory); }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px 32px; }
.footer-title { font-family: var(--serif); font-size: 32px; line-height: 1.1; }
.footer-note { margin-top: 10px; color: #b0aea5; font-family: var(--serif); font-size: 17px; }
.footer-links { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.footer-links a { color: var(--ivory); text-underline-offset: 0.2em; text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.copyright {
  grid-column: 1 / -1;
  padding-top: 24px;
  border-top: 1px solid #3d3d3a;
  color: #b0aea5;
  font-size: 12px;
}
@media (max-width: 991px) {
  :root { --page-margin: 48px; }
  .hero { padding-top: 80px; }
}
@media (max-width: 700px) {
  :root { --page-margin: 24px; }
  .site-header { padding-block: 14px; }
  nav {
    position: absolute;
    top: 64px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 24px 20px;
    background: var(--ivory);
  }
  nav.is-open { display: flex; }
  nav a { width: 100%; padding-block: 9px; }
  .menu-button {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 6px 0 6px 12px;
    border: 0;
    background: transparent;
  }
  .menu-button span { width: 24px; border-top: 1.5px solid var(--ink); }
  .hero { padding-block: 64px 40px; }
  .hero-inner { gap: 24px; }
  h1 { max-width: 340px; font-size: clamp(58px, 18vw, 82px); }
  .hero p { margin-top: 0; font-size: 20px; }
  .content-section { padding-block: 40px; }
  .reading-column { width: calc(100% - 48px); }
  .reading-column > h2 { margin-bottom: 24px; font-size: 23px; }
  .update-heading { align-items: flex-start; flex-direction: column; }
  .prose-section { padding-bottom: 72px; }
  footer { padding-block: 48px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .copyright { grid-column: auto; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }