:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #202124;
  background: #f7f9fc;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  line-height: 1.65;
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 64px auto;
  padding: 48px;
  background: #fff;
  border: 1px solid #e3e8f0;
  border-radius: 20px;
  box-shadow: 0 18px 55px rgba(31, 63, 118, 0.09);
}

header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 32px;
}

header img { width: 72px; height: 72px; }
h1 { margin: 0; font-size: clamp(1.8rem, 5vw, 2.65rem); line-height: 1.1; }
h2 { margin-top: 36px; line-height: 1.25; }
p, li { color: #3c4043; }
a { color: #175cd3; }
.lede { font-size: 1.16rem; }
.notice {
  padding: 16px 18px;
  border-left: 4px solid #188038;
  border-radius: 8px;
  background: #edf7ef;
}
nav { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 32px; }
footer { margin-top: 40px; font-size: .9rem; color: #5f6368; }

@media (max-width: 600px) {
  main { margin: 0; width: 100%; min-height: 100vh; padding: 28px 22px; border: 0; border-radius: 0; }
}