:root {
  color-scheme: light dark;
  --background: #ffffff;
  --surface: #f3f7f7;
  --text: #1c1c1e;
  --secondary: #5f6368;
  --line: #e2e8e8;
  --accent: #0a7b73;
  --accent-fill: #0d9e94;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0e0f10;
    --surface: #1a1d1e;
    --text: #f2f2f4;
    --secondary: #a1a6ab;
    --line: #2a2f31;
    --accent: #4fd1c5;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font:
    17px/1.55 -apple-system,
    BlinkMacSystemFont,
    'SF Pro Text',
    'Segoe UI',
    Roboto,
    'Helvetica Neue',
    Arial,
    sans-serif;
}

.page {
  max-width: 44rem;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

.top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}

.brand img {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 22.5%;
  box-shadow: 0 0 0 1px var(--line);
}

nav {
  display: flex;
  gap: 1.25rem;
}

nav a {
  color: var(--secondary);
  text-decoration: none;
}

nav a:hover,
nav a[aria-current='page'] {
  color: var(--accent);
}

h1 {
  margin: 2rem 0 0.25rem;
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h2 {
  margin: 2.25rem 0 0.5rem;
  font-size: 1.3rem;
  line-height: 1.3;
}

h3 {
  margin: 1.5rem 0 0.25rem;
  font-size: 1.05rem;
}

p,
ul {
  margin: 0.5rem 0 0.9rem;
}

ul {
  padding-left: 1.3rem;
}

li {
  margin: 0.3rem 0;
}

a {
  color: var(--accent);
  text-underline-offset: 0.15em;
}

.updated {
  margin-top: 0;
  color: var(--secondary);
}

.summary {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-radius: 1rem;
  background: var(--surface);
}

.summary ul {
  margin: 0.25rem 0 0;
}

.hero {
  padding: 3.5rem 0 2rem;
  text-align: center;
}

.hero img {
  width: 6.5rem;
  height: 6.5rem;
  border-radius: 22.5%;
  box-shadow: 0 0 0 1px var(--line);
}

.hero h1 {
  margin-top: 1.25rem;
}

.tagline {
  margin: 0.25rem 0 0;
  color: var(--secondary);
  font-size: 1.15rem;
}

.links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  background: var(--accent-fill);
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
}

.button.plain {
  background: var(--surface);
  color: var(--accent);
}

footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--secondary);
  font-size: 0.9rem;
}

footer a {
  color: var(--secondary);
}