:root {
  color-scheme: light dark;
  --fg: #111214; --muted: #6b6f76; --bg: #fafaf9; --rule: #e4e4e2; --accent: #2f6bff; --mark-bg: #111214; --mark-fg: #fafaf9;
}
@media (prefers-color-scheme: dark) {
  :root { --fg: #ececee; --muted: #8b8f97; --bg: #0e0f11; --rule: #24262a; --accent: #7aa2ff; --mark-bg: #ececee; --mark-fg: #0e0f11; }
}
* { box-sizing: border-box; }
body {
  margin: 0; padding: 0 16px;
  background: var(--bg); color: var(--fg);
  font: 400 17px/1.6 "Inter Tight", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}
main {
  max-width: 600px; margin: 0 auto; padding: 72px 0 48px;
  animation: rise .8s cubic-bezier(.2, .7, .2, 1) both;
}
.mark {
  width: 56px; height: 56px; margin: 0 0 28px; border-radius: 14px;
  display: grid; place-items: center;
  background: var(--mark-bg); color: var(--mark-fg);
  font-weight: 600; font-size: 20px; letter-spacing: -.02em;
}
.mark-link { display: inline-block; padding: 0; background: none; }
h1 { font-size: clamp(2rem, 6vw, 2.75rem); font-weight: 600; letter-spacing: -.035em; line-height: 1.1; margin: 0 0 .5rem; }
h2 { font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 .75rem; }
h3 { font-size: 1.15rem; font-weight: 600; letter-spacing: -.01em; margin: 0 0 .25rem; }
p { margin: 0 0 1rem; }
.lede { color: var(--muted); font-size: 1.15rem; margin: 0; }
header { margin-bottom: 56px; }
section { padding: 28px 0; border-top: 1px solid var(--rule); }
footer { margin-top: 28px; padding-top: 28px; border-top: 1px solid var(--rule); color: var(--muted); font-size: .9rem; }
ul { padding-left: 1.25rem; margin: 0 0 1rem; }
a {
  color: var(--accent); text-decoration: none; font-weight: 500;
  background: linear-gradient(currentColor, currentColor) no-repeat 0 100% / 0 1.5px;
  transition: background-size .3s ease;
  padding-bottom: 2px;
}
a:hover, a:focus-visible { background-size: 100% 1.5px; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }
@media (prefers-reduced-motion: reduce) { main { animation: none; } a { transition: none; } }