:root {
  font-family: system-ui, sans-serif;
  color: #102952;
  background: #f4f7fb;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
main {
  width: min(100% - 40px, 960px);
  margin: 60px auto;
}
nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
a {
  color: #1749b2;
  text-underline-offset: 4px;
}
h1 {
  font-size: clamp(38px, 7vw, 76px);
  line-height: 1.08;
  letter-spacing: -0.05em;
  max-width: 750px;
}
h2 {
  font-size: 32px;
}
p,
li,
td,
th {
  font-size: 18px;
  line-height: 1.7;
}
section {
  padding: 40px 0;
  border-top: 1px solid #ccd8e9;
  margin-top: 48px;
}
.label {
  font:
    12px ui-monospace,
    monospace;
  letter-spacing: 0.1em;
  color: #46617f;
}
.hero {
  background: #102952;
  color: white;
  padding: 32px;
  border-radius: 18px;
}
.hero .label {
  color: #c2d5f1;
}
.hero a {
  color: #8ee9ff;
}
.button,
button {
  display: inline-block;
  background: #2457d6;
  color: white;
  padding: 14px 20px;
  border: 0;
  border-radius: 8px;
  font: 600 16px system-ui;
  cursor: pointer;
  text-decoration: none;
}
table {
  border-collapse: collapse;
  width: 100%;
}
td,
th {
  text-align: left;
  border-bottom: 1px solid #ccd8e9;
  padding: 12px;
}
svg {
  display: block;
  width: min(100%, 480px);
  height: auto;
}
.note {
  font-size: 14px;
  color: #46617f;
}
button:focus-visible,
a:focus-visible {
  outline: 3px solid #d18a00;
  outline-offset: 4px;
}
.options {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.sample {
  padding: 36px;
  border-radius: 14px;
  background: #e2eaf6;
  margin-top: 24px;
}
.sample.dark {
  color: white;
  background: #102952;
}
@media (max-width: 480px) {
  main {
    margin: 32px auto;
  }
  .hero {
    padding: 22px;
  }
  p,
  td,
  th {
    font-size: 16px;
  }
  .sample {
    padding: 24px;
  }
}