:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f2f7f5;
  color: #18322d;
}

* { box-sizing: border-box; }

body {
  max-width: 860px;
  margin: 0 auto;
  padding: 36px 20px 64px;
  line-height: 1.65;
}

main {
  padding: clamp(24px, 5vw, 48px);
  border: 1px solid #d4e3de;
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 18px 55px rgba(25, 74, 62, .08);
}

header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.mark {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 18px;
  background: #18765f;
  color: #fff;
  font-size: 27px;
  font-weight: 800;
}

.eyebrow {
  margin: 0 0 3px;
  color: #4f7067;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .11em;
}

h1 { margin: 0; font-size: clamp(27px, 5vw, 38px); line-height: 1.15; }
h2 { margin: 30px 0 7px; font-size: 18px; }
p, li { font-size: 15px; }
.notice { padding: 13px 15px; border-radius: 12px; background: #e9f6f1; color: #185847; }
.muted { color: #61736f; }
a { color: #176f5b; }
code { overflow-wrap: anywhere; }

@media (max-width: 540px) {
  body { padding: 14px 10px 34px; }
  main { border-radius: 15px; }
}