:root {
  color-scheme: light;
  --ink: #1f2328;
  --muted: #667085;
  --line: #e4e7ec;
  --paper: #fbfaf7;
  --card: #ffffff;
  --accent: #2f6f73;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.78;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px 64px;
}

header {
  margin-bottom: 24px;
}

h1 {
  margin: 12px 0 6px;
  font-size: clamp(28px, 7vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

h2 {
  margin: 0 0 10px;
  font-size: 20px;
}

p {
  margin: 0;
}

ul {
  margin: 0;
  padding-left: 1.25em;
}

li + li {
  margin-top: 6px;
}

a {
  color: var(--accent);
  font-weight: 700;
}

section {
  margin-top: 14px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 16px 40px rgba(31, 35, 40, 0.05);
}

.lead,
.back {
  color: var(--muted);
  font-size: 14px;
}

.back {
  text-decoration: none;
}