:root {
  color-scheme: light;
  font: 1rem/1.6 system-ui, sans-serif;
  color: #15343a;
  background: #f3f8f7;
}
body { margin: 0; }
.wrap { width: min(65rem, calc(100% - 2.5rem)); margin-inline: auto; }
header, footer { display: flex; align-items: center; flex-wrap: wrap; gap: .75rem 1.5rem; padding-block: 1rem; }
header { justify-content: space-between; border-bottom: 1px solid #c9ded9; }
nav { display: flex; flex-wrap: wrap; gap: 1rem; }
main { padding-block: 2rem 3rem; }
footer { border-top: 1px solid #c9ded9; }
a { color: #0b5b59; text-underline-offset: .2em; }
a:focus-visible { outline: 3px solid #0b5b59; outline-offset: 4px; }
.brand { font-weight: 800; font-size: 1.35rem; text-decoration: none; }
h1, h2 { line-height: 1.2; }
h1 { font-size: clamp(2rem, 6vw, 3.25rem); margin: .5em 0; }
h2 { font-size: 1.25rem; }
p, ol { max-width: 65ch; }
li + li { margin-top: .7rem; }
.hero { padding: clamp(1.5rem, 6vw, 4rem); background: #e0efeb; border-radius: 1.25rem; }
.hero p { font-size: 1.2rem; }
.hero img { display: block; border-radius: 1.25rem; }
.button { display: inline-block; padding: .6rem 1rem; border-radius: .5rem; color: white; background: #123e48; font-weight: 700; text-decoration: none; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); gap: 1rem; margin-top: 1.5rem; }
.features article { padding: 1rem 1.25rem; background: white; border-radius: .75rem; }