:root {
  --graphite: #1c2126;
  --bone: #e4ded0;
  --cobalt: #2e5bff;
  --signal: #ff6b1a;
  --haze: #9ccbd6;
  --bg: #f4f1ea;
  --ink: #1c2126;
  --muted: #4c565f;
  --line: #d6cfbf;
  --link: #1f45d6;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181c;
    --ink: #ece7dc;
    --muted: #a9b2b9;
    --line: #2c3339;
    --link: #8fb0ff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font:
    17px / 1.6 -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
}

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

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1rem;
}

header.site {
  border-bottom: 1px solid var(--line);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.mark {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: inherit;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.mark img {
  width: 28px;
  height: 28px;
}

nav a {
  margin-left: 1rem;
  color: var(--muted);
  text-decoration: none;
}

nav a:hover {
  color: var(--ink);
}

.hero {
  background:
    linear-gradient(180deg, transparent 55%, rgb(156 203 214 / 35%) 100%),
    linear-gradient(160deg, #2b333a 0%, var(--graphite) 60%);
  color: var(--bone);
  padding: 4.5rem 0 4rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2.6rem, 9vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero h1 span {
  color: var(--signal);
}

.hero p {
  max-width: 34rem;
  margin: 0 0 1rem;
  font-size: 1.15rem;
}

.badge {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--haze);
  border-radius: 999px;
  font-size: 0.9rem;
}

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 1rem;
  margin: 2.5rem 0;
}

.facts div {
  padding: 1rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--cobalt);
  border-radius: 6px;
}

.facts strong {
  display: block;
}

main.doc {
  padding: 2.5rem 0 1rem;
}

main.doc h1 {
  margin-top: 0;
  line-height: 1.2;
}

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

footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  padding: 1.25rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

footer a {
  color: inherit;
}