:root {
  --ink: #16211b;
  --ink-soft: #4a5a51;
  --bg: #ffffff;
  --bg-soft: #f4f7f4;
  --line: #dfe6e0;
  --primary: #305c45;
  --green: #338f5c;
  --accent: #f5ae21;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef3ef;
    --ink-soft: #a3b3aa;
    --bg: #0f1613;
    --bg-soft: #16211b;
    --line: #26332c;
    --primary: #6fbf90;
    --green: #67c98e;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 0 16px;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 680px; margin: 0 auto; padding: 56px 0 80px; }
header.site { display: flex; align-items: center; gap: 12px; margin-bottom: 48px; }
header.site img { width: 44px; height: 44px; border-radius: 11px; }
.word { display: flex; flex-direction: column; line-height: 1.05; }
.word b { font-size: 19px; letter-spacing: -0.01em; }
.word span { font-size: 10px; font-weight: 700; letter-spacing: 3px; color: var(--primary); }
h1 { font-size: 34px; line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 16px; }
h2 { font-size: 20px; margin: 40px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 17px; margin: 28px 0 6px; }
p, li { color: var(--ink-soft); }
.lede { font-size: 20px; color: var(--ink); }
a { color: var(--green); text-underline-offset: 3px; }
ul { padding-left: 20px; }
li { margin: 6px 0; }
.card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 22px;
  margin: 28px 0;
}
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 13px 22px;
  border-radius: 11px;
  margin: 8px 10px 8px 0;
}
@media (prefers-color-scheme: dark) { .btn { color: #0f1613; } }
.meta { font-size: 14px; color: var(--ink-soft); }
footer.site {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}