:root { color-scheme: light; --ink: #1A1A1A; --muted: #6B6B6B; --rule: #D4D4D4; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: #FFFFFF; color: var(--ink);
  font: 18px/1.6 Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
a { color: var(--ink); text-underline-offset: 0.2em; }

header {
  max-width: 38rem; margin: 0 auto; padding: 2rem 1.25rem 0;
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; align-items: baseline; justify-content: space-between;
}
.mark { font-weight: 600; letter-spacing: -0.01em; }

main { max-width: 38rem; margin: 0 auto; padding: 4rem 1.25rem 6rem; }
h1, h2, .big { font-size: clamp(1.75rem, 5vw, 2.5rem); line-height: 1.15; letter-spacing: -0.02em; font-weight: 600; }
h1 { margin: 0 0 2rem; }
h2 { margin: 3.5rem 0 1rem; }
main > h2:first-child { margin-top: 0; }
h3 { font-size: 1.15rem; line-height: 1.3; font-weight: 600; margin: 2.5rem 0 0.5rem; }
p { margin: 0 0 1rem; }
.muted { color: var(--muted); }
.big { margin: 4rem 0 0; }
footer { margin-top: 4rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); color: var(--muted); font-size: 0.95rem; }
.lead { font-size: 1.15rem; font-weight: 600; margin: 2rem 0; }