:root {
  --bg: #f5f6f4;
  --surface: #ffffff;
  --text: #141917;
  --muted: #5b6560;
  --border: #dde2df;
  --primary: #1e6b4e;
  --primary-soft: #e3efe9;
  --accent: #ef6a3a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101412;
    --surface: #171c19;
    --text: #e8ece9;
    --muted: #a3ada7;
    --border: #2a322e;
    --primary: #5fbf95;
    --primary-soft: #1d2b24;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
header {
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
header a.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  font-size: 20px;
}
header img { width: 36px; height: 36px; border-radius: 9px; }
main {
  max-width: 760px;
  margin: 0 auto 40px;
  padding: 28px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
}
@media (max-width: 800px) {
  main { margin: 0 16px 32px; }
}
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 20px; margin: 32px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 4px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--primary); }
ul { padding-left: 20px; }
.lead { font-size: 18px; color: var(--muted); margin-top: 0; }
.card {
  background: var(--primary-soft);
  border-radius: 14px;
  padding: 16px 18px;
  margin: 16px 0;
}
.features { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin: 20px 0; }
.features div { border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px; }
.features strong { display: block; margin-bottom: 4px; }
footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px 40px;
  font-size: 14px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}
footer a { color: var(--muted); }