:root {
  --navy: #0b2a4a;
  --teal: #2aa3b0;
  --ink: #1a2430;
  --paper: #f3f6f8;
  --line: #d3dde4;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Arial, Helvetica, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
}
a { color: #155e73; }
a:hover { color: var(--navy); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
header.site { background: var(--navy); color: #fff; padding: 16px 0 14px; }
header.site .brand { display: flex; align-items: center; gap: 14px; }
header.site img.mark { width: 56px; height: 56px; display: block; }
header.site h1 { margin: 0; font-size: 22px; font-weight: 700; letter-spacing: .04em; }
header.site h1 a { color: inherit; text-decoration: none; }
header.site p { margin: 4px 0 0; color: var(--teal); font-size: 12px; }
nav.main { background: #071c32; }
nav.main ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; }
nav.main a {
  color: #fff; text-decoration: none; display: block;
  padding: 9px 13px; font-size: 13px;
}
nav.main a:hover, nav.main a.active { background: var(--teal); color: #072028; }
main { padding: 22px 0 48px; }
article { background: #fff; border: 1px solid var(--line); padding: 22px 24px; }
.cards { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
@media (max-width: 720px) { .cards { grid-template-columns: 1fr; } header.site h1 { font-size: 18px; } }
.card { border: 1px solid var(--line); padding: 14px; }
footer.site { background: var(--navy); color: #b7c6d4; padding: 18px 0 28px; font-size: 13px; }
footer.site a { color: #fff; }