:root {
  --text: #1f2933;
  --muted: #6b7684;
  --line: #e3e7eb;
  --link: #1d5fa8;
  --bg: #ffffff;
}

* { box-sizing: border-box; }

html { color-scheme: light; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a { color: var(--link); }
a:hover { text-decoration: none; }

.wrap {
  width: 100%;
  max-width: 42rem;
  margin: 0 auto;
  padding-inline: 1.25rem;
}

.site-header {
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1rem;
}

.site-header .brand img {
  display: block;
  height: 44px;
  width: auto;
}

.site-header nav a {
  margin-left: 1.25rem;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
}

.site-header nav a:hover { color: var(--text); }

main { flex: 1; }
main .wrap { padding-block: 2.5rem 3rem; }

h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 1rem; }
h2 { font-size: 1.35rem; margin: 2.25rem 0 0.75rem; }
h3 { font-size: 1.1rem; margin: 1.5rem 0 0.5rem; }
p, ul, ol { margin: 0 0 1rem; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }

figure { margin: 2rem 0 0; }
figure img { display: block; width: 100%; height: auto; border-radius: 4px; }
figcaption { color: var(--muted); font-size: 0.9rem; margin-top: 0.5rem; }

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-block: 1.25rem;
}

.site-footer a { color: var(--muted); }

@media (max-width: 480px) {
  body { font-size: 16px; }
  h1 { font-size: 1.6rem; }
  .site-header nav a { margin-left: 0.9rem; }
}