:root {
  color: #102b21;
  background: #e9f1e8;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 24px;
}

main {
  width: min(760px, 100%);
  margin: 0 auto;
  padding: clamp(24px, 6vw, 56px);
  border: 1px solid #dfe5dd;
  border-radius: 32px;
  background: #fffaf5;
  box-shadow: 0 22px 70px rgba(16, 43, 33, .1);
}

a { color: #197a57; }
h1 { margin-bottom: 4px; font-size: clamp(2.2rem, 8vw, 4.4rem); line-height: 1; }
h2 { margin-top: 34px; line-height: 1.2; }
.brand { font-size: 1.5rem; font-weight: 800; text-decoration: none; color: inherit; }
.brand span { color: #ff5d3d; }
.updated { color: #68776f; }
.notice {
  margin: 24px 0;
  padding: 18px;
  border-radius: 18px;
  background: #fff0e9;
}
.action {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 16px;
  color: white;
  background: #123025;
  font-weight: 700;
  text-decoration: none;
}
nav { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 16px; }