:root {
  --ink: #1a1b1d;
  --muted: #606060;
  --line: #e6e6e6;
  --paper: #fff;
  --accent: #0000ee;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body { margin: 0; min-width: 320px; }

a { color: inherit; text-underline-offset: 0.18em; }

a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }

main { width: min(100% - 40px, 680px); margin: 0 auto; }

header {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.wordmark { font-size: 1rem; font-weight: 700; text-decoration: none; }

nav { display: flex; gap: 1rem; }
nav a { color: var(--muted); font-family: Arial, sans-serif; font-size: 0.8rem; text-decoration: none; }
nav a:hover { color: var(--ink); }

section { padding: 2.5rem 0; border-bottom: 1px solid var(--line); }

.hero { padding: 5rem 0; }

h1, h2, h3, p { margin-top: 0; }

h1, h2 { font-weight: 400; letter-spacing: -0.02em; }
h1 { margin-bottom: 1rem; font-size: 2.2rem; }
h2 { margin-bottom: 1.25rem; font-size: 1.55rem; }
h3 { margin: 1.7rem 0 0.5rem; font-size: 1.08rem; }
p { max-width: 600px; font-size: 1.08rem; line-height: 1.55; }
.hero p { color: var(--muted); }

footer { padding: 2rem 0 3rem; display: flex; justify-content: space-between; color: var(--muted); font-family: Arial, sans-serif; font-size: 0.78rem; }
footer p { margin: 0; }

@media (max-width: 620px) {
  main { width: min(100% - 32px, 680px); }
  header { min-height: 74px; }
  nav { gap: 0.8rem; }
  nav a { font-size: 0.8rem; }
  section { padding: 2rem 0; }
  .hero { padding: 4rem 0; }
  footer { gap: 1rem; flex-direction: column; }
}