:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --text: #0b1a2b;
  --muted: #5a6878;
  --line: #e2e7ee;
  --accent: #009ad6;
  --accent-soft: rgba(0, 154, 214, 0.1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1420;
    --surface: #121e2c;
    --text: #e9eef5;
    --muted: #9aa8b8;
    --line: #223244;
    --accent: #2cbcf2;
    --accent-soft: rgba(44, 188, 242, 0.12);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
}
.brand {
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--text);
  text-decoration: none;
}
.brand span { color: var(--accent); }
nav a {
  margin-left: 18px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}
nav a[aria-current="page"], nav a:hover { color: var(--accent); }

main { padding: 36px 0 48px; }

h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 21px; margin: 36px 0 10px; }
h3 { font-size: 17px; margin: 22px 0 6px; }
p, ul { margin: 0 0 14px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }

.lead { color: var(--muted); font-size: 17px; margin-bottom: 26px; }
.meta { color: var(--muted); font-size: 14px; margin-bottom: 26px; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 22px;
  margin: 0 0 14px;
}
.card h3 { margin-top: 0; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }

.contact {
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: 16px;
  padding: 18px 22px;
  margin: 26px 0;
}
.contact p { margin: 0; }

.links { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.links a.card { display: block; text-decoration: none; color: var(--text); }
.links a.card strong { display: block; font-size: 18px; margin-bottom: 4px; color: var(--accent); }
.links a.card span { color: var(--muted); }

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  padding: 22px 0 36px;
}
footer a { color: var(--muted); }

@media (max-width: 480px) {
  h1 { font-size: 27px; }
  nav a { margin-left: 12px; }
}