:root {
  --paper: #f6f4f0;
  --ink: #25382f;
  --muted: #6b7a70;
  --primary: #4f8066;
  --line: rgba(79, 128, 102, 0.18);
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--paper); color: var(--ink); }
body {
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", sans-serif;
}
a { color: var(--primary); }
header, main, footer { max-width: 40rem; margin: 0 auto; padding: 0 1.5rem; }
header { padding-top: 2.5rem; }
nav { display: flex; gap: 1rem; margin: 0.75rem 0 2rem; font-size: 15px; }
h1 { font-size: 1.75rem; font-weight: 650; letter-spacing: -0.02em; margin: 0 0 0.35rem; }
.eyebrow { font-size: 13px; font-weight: 500; color: var(--muted); }
.updated { color: var(--muted); font-size: 13px; margin-bottom: 2rem; }
h2 { font-size: 1.1rem; margin: 2rem 0 0.6rem; }
p, li { color: var(--ink); }
ul { padding-left: 1.2rem; }
footer { border-top: 1px solid var(--line); margin: 3rem auto 2rem; padding-top: 1rem; color: var(--muted); font-size: 13px; }
.card {
  background: #fcfaf6;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem 1.1rem;
}