:root {
  color-scheme: light dark;
  --accent: #1f7361;
  --accent-soft: #e3f1ed;
  --bg: #f6f7f8;
  --surface: #ffffff;
  --text: #1c2024;
  --muted: #646d76;
  --border: #dde1e5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #4fb39b;
    --accent-soft: #17332c;
    --bg: #111416;
    --surface: #1a1e21;
    --text: #e7eaec;
    --muted: #9aa4ad;
    --border: #2c3236;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

.wrap { max-width: 720px; margin: 0 auto; padding: 0 16px; }

header { background: var(--surface); border-bottom: 1px solid var(--border); }
header .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; min-height: 64px; padding-block: 10px; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; color: var(--text); font-weight: 600; font-size: 19px; text-decoration: none; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
nav { display: flex; gap: 18px; font-size: 16px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current] { color: var(--accent); }

main.wrap { padding-block: 32px 48px; }
h1 { font-size: 34px; line-height: 1.2; margin: 0 0 16px; }
h2 { font-size: 21px; line-height: 1.3; margin: 32px 0 8px; }
.lead { font-size: 20px; color: var(--muted); margin-top: 0; }
.date { color: var(--muted); }
.note { background: var(--accent-soft); border-radius: 8px; padding: 14px 16px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }

footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 15px; padding-block: 18px; }