:root {
  --bg: #ffffff;
  --text: #1c2430;
  --muted: #5b6675;
  --line: #e3e7ec;
  --accent: #0b6e5f;
  --card: #f6f8f9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161b;
    --text: #e6eaef;
    --muted: #9aa5b3;
    --line: #2a313a;
    --accent: #5fd0bc;
    --card: #1a2027;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }
header.site { border-bottom: 1px solid var(--line); }
header.site .wrap {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: 8px 24px; padding-top: 18px; padding-bottom: 18px;
}
.brand { font-weight: 700; font-size: 1.1rem; color: var(--text); text-decoration: none; letter-spacing: -0.01em; }
.brand span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 0.95rem; }
nav a:first-child { margin-left: 0; }
nav a:hover { color: var(--text); }
main { padding: 48px 0 64px; }
h1 { font-size: 2rem; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 16px; }
h2 { font-size: 1.25rem; margin: 44px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 1.05rem; margin: 24px 0 6px; }
p, ul { margin: 0 0 14px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }
a { color: var(--accent); }
.lead { font-size: 1.15rem; color: var(--muted); }
.meta { color: var(--muted); font-size: 0.92rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px 22px; margin: 14px 0; }
.card h3 { margin-top: 0; }
.tag { display: inline-block; font-size: 0.8rem; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; margin-top: 4px; }
address { font-style: normal; }
footer.site { border-top: 1px solid var(--line); color: var(--muted); font-size: 0.88rem; padding: 24px 0 40px; }
footer.site a { color: var(--muted); }
footer.site p { margin-bottom: 8px; }