:root {
  color: #0A2847;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  background: #F7F9FC;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #F7F9FC; }
a { color: #0D47D1; text-underline-offset: 3px; }
.page-header {
  background: #0A2847;
  color: white;
  padding: 1.15rem clamp(1rem, 4vw, 3rem);
  box-shadow: 0 8px 30px rgb(10 40 71 / 10%);
}
.page-header a { color: white; text-decoration: none; font-weight: 650; }
main {
  width: min(820px, calc(100% - 2rem));
  margin: clamp(2rem, 6vw, 4.5rem) auto;
  background: white;
  padding: clamp(1.5rem, 5vw, 3.5rem);
  border: 1px solid rgb(10 40 71 / 8%);
  border-radius: 1.25rem;
  box-shadow: 0 18px 55px rgb(10 40 71 / 7%);
}
h1 {
  color: #0A2847;
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-size: clamp(2.2rem, 6vw, 3.7rem);
  margin-top: 0;
}
h2 {
  color: #0A2847;
  margin-top: 2.2rem;
  line-height: 1.2;
  letter-spacing: -0.015em;
}
p { color: rgb(10 40 71 / 75%); }
.updated { color: rgb(10 40 71 / 48%); font-size: 0.9rem; }
footer { text-align: center; color: rgb(10 40 71 / 45%); padding: 0 1rem 3rem; }
::selection { background: #B9F6D9; color: #0A2847; }