:root {
  --page: #ffffff;
  --ink: #1a1c22;
  --graphite: #5d6372;
  --hairline: #e6e8ee;
  --frost: #f1f3f7;
  --cobalt: #3563f5;
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page: #141519;
    --ink: #eef0f4;
    --graphite: #a3a9b6;
    --hairline: #2d3038;
    --frost: #1f2127;
    --cobalt: #8aa2ff;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --page: #141519;
  --ink: #eef0f4;
  --graphite: #a3a9b6;
  --hairline: #2d3038;
  --frost: #1f2127;
  --cobalt: #8aa2ff;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 16px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 16px 72px;
}

header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

header img {
  flex: none;
  width: 44px;
  height: 44px;
}

h1 {
  min-width: 0;
  margin: 0;
  font-size: clamp(24px, 6vw, 30px);
  overflow-wrap: break-word;
  hyphens: auto;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h2 {
  margin: 36px 0 8px;
  font-size: 19px;
  letter-spacing: -0.01em;
}

p,
ul {
  margin: 0 0 12px;
}

ul {
  padding-left: 22px;
}

li {
  margin-bottom: 6px;
}

a {
  color: var(--cobalt);
  text-underline-offset: 2px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  color: var(--graphite);
  font-size: 14px;
}

.summary {
  margin: 24px 0 8px;
  padding: 16px 20px;
  border-radius: 14px;
  background: var(--frost);
}

.summary ul {
  margin: 0;
}

code {
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--hairline);
  color: var(--graphite);
  font-size: 14px;
}