:root {
  color-scheme: light;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #17312d;
  background: #f3f7f6;
}

* { box-sizing: border-box; }
body { margin: 0; line-height: 1.65; }
main {
  width: min(860px, calc(100% - 32px));
  margin: 48px auto;
  padding: clamp(24px, 5vw, 56px);
  background: #fff;
  border: 1px solid #dce8e5;
  border-radius: 24px;
  box-shadow: 0 18px 60px rgba(18, 70, 61, .08);
}
h1, h2 { line-height: 1.2; color: #0e5f50; }
h1 { margin-top: 0; font-size: clamp(2rem, 6vw, 3.4rem); }
h2 { margin-top: 2rem; }
a { color: #087867; font-weight: 650; }
.brand { color: #087867; font-weight: 800; letter-spacing: .02em; }
.meta, footer { color: #60726f; }
.notice {
  padding: 16px 18px;
  background: #eaf7f3;
  border-left: 4px solid #14a185;
  border-radius: 10px;
}
.button {
  display: inline-block;
  padding: 12px 18px;
  color: #fff;
  background: #087867;
  border-radius: 12px;
  text-decoration: none;
}
nav { display: flex; flex-wrap: wrap; gap: 16px; margin: 24px 0; }
footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid #dce8e5; }