:root {
  --canvas: #f5f7f9;
  --surface: #ffffff;
  --text: #15191e;
  --text-2: #5a626c;
  --separator: #dfe3e8;
  --accent: #1d5f7f;
  --on-accent: #ffffff;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #0d1013;
    --surface: #161a1f;
    --text: #edf0f3;
    --text-2: #a6aeb7;
    --separator: #2a3139;
    --accent: #6fb3d6;
    --on-accent: #0d1013;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--text);
  font: 1rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  overflow-wrap: break-word;
}

a {
  color: var(--accent);
}

a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

header.site,
main,
footer.site {
  max-width: 42rem;
  margin: 0 auto;
  padding-left: 16px;
  padding-right: 16px;
}

header.site {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 4px 16px;
  padding-top: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--separator);
}

.brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
}

header.site nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0 16px;
}

header.site nav a {
  display: inline-block;
  padding: 10px 0;
  color: var(--text-2);
  text-decoration: none;
}

header.site nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

main {
  padding-top: 32px;
  padding-bottom: 48px;
}

h1 {
  font-size: 1.75rem;
  line-height: 1.25;
  margin: 0 0 16px;
}

h2 {
  font-size: 1.25rem;
  line-height: 1.3;
  margin: 32px 0 8px;
}

h3 {
  font-size: 1.05rem;
  margin: 24px 0 4px;
}

p,
ul {
  margin: 0 0 16px;
}

ul {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 8px;
}

.lead {
  font-size: 1.25rem;
  color: var(--text-2);
}

.promises {
  list-style: none;
  padding: 0;
  margin: 32px 0;
}

.promises li {
  background: var(--surface);
  border: 1px solid var(--separator);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

.promises strong {
  display: block;
}

.lang-switch {
  font-size: 0.9rem;
}

article + article {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--separator);
}

details {
  background: var(--surface);
  border: 1px solid var(--separator);
  border-radius: 12px;
  margin-bottom: 12px;
}

summary {
  cursor: pointer;
  font-weight: 600;
  padding: 14px 16px;
}

details p {
  margin: 0;
  padding: 0 16px 16px;
}

footer.site {
  padding-top: 16px;
  padding-bottom: 32px;
  border-top: 1px solid var(--separator);
  color: var(--text-2);
  font-size: 0.9rem;
}