:root {
  --ink: #1f2a24;
  --muted: #5b6b61;
  --accent: #2f7d54;
  --accent-dark: #215c3d;
  --bg: #ffffff;
  --soft: #f4f7f4;
  --line: #e3e9e4;
  --max: 720px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 18px;
}

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

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--soft);
}
.site-header .wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 20px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
}
.site-header .brand {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent-dark);
}
.site-header .brand:hover { text-decoration: none; }
.site-header .tagline { color: var(--muted); font-size: 14px; }

/* Main */
main { max-width: var(--max); margin: 0 auto; padding: 32px 20px 8px; }

article h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; }
article h2 { font-size: 24px; margin: 34px 0 10px; }
article h3 { font-size: 20px; margin: 26px 0 8px; }
article p { margin: 0 0 16px; }
article ul, article ol { margin: 0 0 16px; padding-left: 24px; }
article li { margin: 4px 0; }
article hr { border: none; border-top: 1px solid var(--line); margin: 28px 0; }

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 20px;
  font-size: 16px;
}
th, td { text-align: left; padding: 10px 12px; border: 1px solid var(--line); }
th { background: var(--soft); }

/* Index / listing */
.post-list { list-style: none; padding: 0; margin: 8px 0; }
.post-list li { padding: 18px 0; border-bottom: 1px solid var(--line); }
.post-list a { font-size: 21px; font-weight: 600; }
.post-list .desc { color: var(--muted); font-size: 16px; margin-top: 4px; }

.lead { font-size: 20px; color: var(--muted); margin-bottom: 28px; }

/* Footer */
.site-footer {
  max-width: var(--max);
  margin: 40px auto 0;
  padding: 24px 20px 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
.site-footer a { color: var(--muted); text-decoration: underline; }

@media (max-width: 480px) {
  body { font-size: 17px; }
  article h1 { font-size: 27px; }
}