:root {
  color-scheme: light;
  --ink: #17324a;
  --muted: #587083;
  --blue: #1f6ea1;
  --orange: #e8782f;
  --paper: #fffaf3;
  --card: #ffffff;
  --line: #dbe6ed;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--blue); }
.shell { width: min(760px, calc(100% - 36px)); margin: 0 auto; }
header { padding: 28px 0 18px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; }
.sun { width: 28px; height: 28px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 7px #fff0df; }
nav { float: right; display: flex; gap: 18px; }
nav a { color: var(--muted); text-decoration: none; font-weight: 650; }
main { padding: 52px 0 72px; }
h1 { margin: 0 0 8px; font-size: clamp(2rem, 7vw, 3.25rem); line-height: 1.08; }
h2 { margin: 38px 0 8px; font-size: 1.3rem; }
p, li { color: var(--muted); }
.lede { font-size: 1.12rem; max-width: 650px; }
.meta { color: var(--orange); font-weight: 700; }
.notice { margin: 28px 0; padding: 18px 20px; border: 1px solid var(--line); border-left: 5px solid var(--orange); border-radius: 14px; background: var(--card); }
.contact { display: inline-block; margin-top: 8px; padding: 12px 18px; border-radius: 999px; color: white; background: var(--blue); text-decoration: none; font-weight: 750; }
footer { padding: 24px 0 42px; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
@media (max-width: 620px) {
  header { padding-bottom: 24px; }
  nav { float: none; margin-top: 20px; flex-wrap: wrap; gap: 12px 18px; }
  main { padding-top: 38px; }
}