:root {
  --fg: #1c1e21;
  --muted: #6b7280;
  --bg: #fbfbfa;
  --accent: #2f6f4f;
  --line: #e5e5e2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0;
  font: 16px/1.6 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
}

header .logo { display: flex; align-items: center; }

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-right: 16px;
  font-size: 15px;
}

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

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

h1 { font-size: 28px; margin: 0 0 12px; letter-spacing: -0.01em; }
h2 { font-size: 20px; margin: 32px 0 8px; }

.lead { color: var(--muted); margin-bottom: 28px; }
.note { color: var(--muted); font-size: 14px; }

.list { list-style: none; padding: 0; }

.list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

.list .date {
  display: inline-block;
  min-width: 72px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
}

.list a { color: var(--fg); text-decoration: none; }
.list a:hover { color: var(--accent); }

article p { margin: 0 0 12px; }

pre {
  background: #f2f2ef;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 14px;
  overflow-x: auto;
  font-size: 13px;
}

code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 24px 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}