:root {
  --ink: #173c32;
  --primary: #226c50;
  --muted: #5c6f66;
  --line: #e1e8e1;
  --background: #f5f7f4;
  --lime: #dcf6a5;
  --sage: #e4eee4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--primary); }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: 860px; margin: 0 auto; padding: 0 24px; }

header.site { padding: 24px 0; }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { color: var(--ink); font-weight: 700; font-size: 19px; text-decoration: none; }
header.site nav a { margin-left: 20px; font-size: 16px; text-decoration: none; }
header.site nav a:hover { text-decoration: underline; }

h1 { margin: 0 0 16px; font-size: clamp(36px, 7vw, 56px); line-height: 1.1; letter-spacing: -0.02em; }
h2 { margin: 0 0 12px; font-size: 26px; line-height: 1.25; }
h3 { margin: 28px 0 4px; font-size: 18px; }
p { margin: 0 0 14px; }

.hero { padding: 56px 0 64px; }
.lead { max-width: 600px; color: var(--muted); font-size: 20px; }

.card {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 24px;
  margin-bottom: 64px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}
.mark {
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  border-radius: 22px;
  background: var(--lime);
  font-size: 26px;
  font-weight: 700;
}
.card ul { margin: 0 0 18px; padding-left: 20px; }

.button {
  display: inline-block;
  margin: 4px 12px 4px 0;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}
.button:hover { background: var(--ink); }
.button.quiet { background: var(--sage); color: var(--ink); }
.button.quiet:hover { background: var(--lime); }

section { margin-bottom: 56px; }

footer.site { padding: 28px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 15px; }
footer.site p { margin: 0 0 4px; }

@media (max-width: 560px) {
  .card { grid-template-columns: 1fr; padding: 22px; }
  .mark { width: 72px; height: 72px; border-radius: 17px; font-size: 20px; }
  header.site nav a { margin-left: 14px; }
  .hero { padding: 32px 0 44px; }
}