:root {
  --bg:#fbfbfb;
  --card:#ffffff;
  --muted:#6b6b6b;
  --accent:#0b3d91;
  --max-width:980px;
  --radius:10px;
}

* { box-sizing: border-box; }
body {
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background: var(--bg);
  color: #111;
  margin: 0;
  padding: 24px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 20px;
}

.title-block h1 { margin: 0; font-size: 1.6rem; }
.subtitle { margin: 4px 0 0; color: var(--muted); }

.main-nav a {
  margin-left: 12px;
  text-decoration: none;
  color: var(--accent);
  font-weight: 600;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: 0 6px 18px rgba(18,24,32,0.06);
}

.card h2 { margin-top: 0; }
.links li, .card ul li { margin: 8px 0; }

.site-footer {
  text-align: center;
  color: var(--muted);
  margin-top: 18px;
  font-size: 0.95rem;
}

@media (max-width:720px){
  .site-header{flex-direction:column;align-items:flex-start}
  .main-nav{margin-top:8px}
}