:root {
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --bg: #ffffff;
  --link: #111827;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}
.site-header {
  border-bottom: 1px solid var(--border);
}
.site-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  padding-top: 28px;
}
.nav {
  display: flex;
  gap: 22px;
  padding: 14px 0 18px;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
}
.nav a.active, .nav a:hover { color: var(--text); }
main { padding: 52px 0 72px; }
h1 {
  font-size: 2.4rem;
  line-height: 1.15;
  margin: 0 0 20px;
}
h2 {
  font-size: 1.35rem;
  margin: 34px 0 12px;
}
p { margin: 0 0 16px; }
.muted { color: var(--muted); }
.buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 22px 0 28px;
}
.button {
  display: inline-block;
  padding: 11px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
}
.button.primary {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}
.meta-block {
  margin: 22px 0;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
}
a { color: var(--link); }
.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  padding: 24px 0 40px;
  font-size: 0.98rem;
}
@media (max-width: 640px) {
  .container { padding: 0 18px; }
  h1 { font-size: 2rem; }
  .nav { gap: 16px; flex-wrap: wrap; }
}