:root {
  color-scheme: light;
  --ink: #16202a;
  --muted: #52606d;
  --line: #d9e2ec;
  --panel: #f5f8fb;
  --accent: #155eef;
  --accent-dark: #0b3b91;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: #ffffff;
  font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

header, main, footer {
  width: min(820px, calc(100% - 40px));
  margin-inline: auto;
}

header {
  padding: 64px 0 32px;
  border-bottom: 1px solid var(--line);
}

main { padding: 32px 0 56px; }

footer {
  padding: 24px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.925rem;
}

h1, h2 { line-height: 1.2; }
h1 { margin: 0 0 14px; font-size: clamp(2rem, 5vw, 3.4rem); letter-spacing: -0.035em; }
h2 { margin-top: 38px; font-size: 1.35rem; }
p, li { max-width: 72ch; }
a { color: var(--accent-dark); text-underline-offset: 0.18em; }
a:hover { color: var(--accent); }

.eyebrow {
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lead { color: var(--muted); font-size: 1.15rem; }

.notice {
  margin: 28px 0;
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
}

nav { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 28px; }
ul { padding-left: 1.3rem; }
.meta { color: var(--muted); }

@media (max-width: 520px) {
  header { padding-top: 42px; }
  header, main, footer { width: min(100% - 28px, 820px); }
}