:root {
  color-scheme: light;
  --ink: #142033;
  --muted: #5f6f86;
  --line: #d8e0ea;
  --panel: #ffffff;
  --soft: #f4f7fb;
  --accent: #1b7f76;
  --accent-ink: #073c38;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

main {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

header {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.nav {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 800;
  font-size: 20px;
  color: var(--accent-ink);
}

.links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.hero,
section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  margin-top: 20px;
}

h1 {
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.05;
  margin: 0 0 12px;
}

h2 {
  font-size: 24px;
  margin: 0 0 10px;
}

h3 {
  font-size: 18px;
  margin: 20px 0 8px;
}

p {
  margin: 0 0 12px;
}

ul,
ol {
  padding-left: 22px;
}

li {
  margin: 8px 0;
}

.tag {
  color: var(--muted);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0;
}

.button {
  display: inline-block;
  padding: 12px 16px;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  margin-top: 8px;
}

.button:hover {
  text-decoration: none;
}

.note {
  color: var(--muted);
}

footer {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 32px;
  color: var(--muted);
  font-size: 14px;
}

code {
  background: #ecf1f6;
  padding: 2px 5px;
  border-radius: 5px;
}