:root {
  color: #18342c;
  background: #eef6f2;
  font: 16px/1.65 Arial, sans-serif;
}

body {
  margin: 0;
  padding: 32px 16px;
}

main {
  width: min(760px, 100%);
  margin: auto;
  padding: 42px;
  border: 1px solid #d2e4dc;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(16, 74, 57, .09);
}

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

.home-link {
  display: inline-block;
  color: #fff;
  text-decoration: none !important;
  border-radius: 16px;
}

.home-link:link,
.home-link:visited {
  color: #fff;
  text-decoration: none !important;
}

.home-link .mark {
  transition: background .15s ease, transform .15s ease, box-shadow .15s ease;
}

.home-link:hover .mark,
.home-link:focus-visible .mark {
  background: #096c54;
  transform: translateY(-1px);
  box-shadow: 0 5px 14px rgba(8, 118, 90, .22);
}

.home-link:focus-visible {
  outline: 3px solid #72cbb0;
  outline-offset: 4px;
}

.header-copy {
  transform: translateY(3px);
}

.mark {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 16px;
  color: #fff;
  background: #08765a;
}

.mark svg {
  width: 35px;
  height: 35px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.brand,
h1 {
  margin: 0;
}

.brand,
.effective,
footer {
  color: #687c75;
}

h1 {
  font-size: 30px;
}

h2 {
  margin-top: 30px;
  color: #08765a;
  font-size: 19px;
}

code {
  padding: 2px 5px;
  border-radius: 5px;
  background: #eef6f2;
}

.notice {
  padding: 12px 14px;
  border-left: 4px solid #d29a22;
  background: #fff9e9;
}

footer {
  margin-top: 38px;
  padding-top: 18px;
  border-top: 1px solid #e5eee9;
  font-size: 13px;
}

@media (max-width: 600px) {
  main {
    padding: 24px;
  }
}