:root {
  --ink: #1c1d21;
  --muted: #5c6066;
  --line: #e3e5e8;
  --bg: #fbfaf8;
  --accent: #2f5d50;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 24px 22px;
  border-bottom: 1px solid var(--line);
}

.logo {
  font-weight: 700;
  font-size: 19px;
  letter-spacing: .01em;
  color: var(--ink);
}

.site-header nav { display: flex; gap: 20px; font-size: 15px; }
.site-header nav a { color: var(--muted); }
.site-header nav a.active,
.site-header nav a:hover { color: var(--ink); text-decoration: none; }

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px 64px;
}

h1 {
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: -.01em;
  margin: 0 0 16px;
}

h2 {
  font-size: 20px;
  margin: 40px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

h3 { font-size: 17px; margin: 0 0 8px; }

.lead { font-size: 19px; color: var(--muted); margin: 0 0 8px; }

.cards { display: grid; gap: 16px; }

.card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 20px;
  background: #fff;
}

.card p { margin: 0 0 10px; color: var(--muted); }
.meta { font-size: 13px; color: #8a8f96; letter-spacing: .02em; }

.notes { list-style: none; margin: 0; padding: 0; font-size: 16px; }
.notes li { padding: 12px 0; border-bottom: 1px solid var(--line); }
.notes span { color: #8a8f96; font-size: 14px; }

.plain { margin: 0; padding-left: 20px; }
.plain li { margin-bottom: 8px; }

.contacts { margin: 28px 0; }
.contacts dt { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: #8a8f96; margin-top: 18px; }
.contacts dd { margin: 4px 0 0; }

.muted { color: var(--muted); font-size: 15px; }

.site-footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid var(--line);
  color: #8a8f96;
  font-size: 14px;
}

@media (max-width: 560px) {
  h1 { font-size: 27px; }
  .site-header { flex-direction: column; gap: 12px; }
  .site-header nav { gap: 16px; }
}