:root {
  color-scheme: light;
  --ink: #18342a;
  --muted: #5e6f67;
  --line: #dbe5df;
  --paper: #ffffff;
  --wash: #f3f7f4;
  --accent: #277b59;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--wash);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

a { color: var(--accent); }

.site-header,
.document,
footer {
  width: min(920px, calc(100% - 32px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 4px 18px;
  color: var(--muted);
  font-size: 14px;
}

.brand {
  color: var(--ink);
  font-size: 22px;
  font-weight: 750;
  text-decoration: none;
}

.document {
  padding: clamp(24px, 5vw, 58px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
  box-shadow: 0 14px 45px rgba(24, 52, 42, .07);
}

h1, h2, h3 {
  line-height: 1.25;
  text-wrap: balance;
}

h1 { margin: 0 0 34px; font-size: clamp(30px, 5vw, 46px); }
h2 { margin: 42px 0 18px; font-size: 26px; }
h3 { margin: 26px 0 8px; font-size: 19px; }
p { margin: 0 0 16px; }
ul { margin: 0 0 22px; padding-left: 26px; }
li + li { margin-top: 8px; }
code { padding: 2px 5px; border-radius: 5px; background: var(--wash); font-family: inherit; }

.document-list {
  display: grid;
  gap: 12px;
  margin-top: 28px;
  padding: 0;
  list-style: none;
}

.document-list a {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-weight: 650;
  text-decoration: none;
}

.document-list a:hover { border-color: var(--accent); }

footer {
  padding: 28px 4px 42px;
  color: var(--muted);
  font-size: 14px;
}

footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer p { margin-top: 16px; }

@media (max-width: 620px) {
  body { font-size: 16px; }
  .site-header { align-items: flex-start; flex-direction: column; gap: 2px; }
  .document { border-radius: 12px; }
  h1 { font-size: 30px; }
  h2 { font-size: 23px; }
}