:root {
  color-scheme: dark;
  --sky-top: #05070f;
  --sky-mid: #0b1122;
  --sky-low: #1d2946;
  --ink: rgba(250, 248, 245, 0.96);
  --muted: rgba(232, 228, 222, 0.62);
  --accent: #93a7d6;
  --glass: rgba(255, 255, 255, 0.085);
  --edge: rgba(255, 255, 255, 0.16);
  font-family:
    "SF Pro Display",
    "SF Pro Text",
    system-ui,
    -apple-system,
    sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background: linear-gradient(180deg, var(--sky-top) 0%, var(--sky-mid) 52%, var(--sky-low) 100%);
  color: var(--ink);
  min-height: 100svh;
}

.page {
  max-width: 36rem;
  margin: 0 auto;
  padding: 3.5rem 1.4rem 4rem;
}

.mark {
  letter-spacing: 0.08em;
  text-transform: lowercase;
  color: var(--accent);
  font-weight: 650;
  margin: 0 0 1.2rem;
}

h1 {
  font-size: clamp(1.8rem, 5vw, 2.4rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 1rem;
}

h2 {
  font-size: 1.05rem;
  margin: 1.6rem 0 0.45rem;
}

p,
li {
  color: var(--muted);
  line-height: 1.5;
}

.lead {
  font-size: 1.05rem;
}

ul {
  padding-left: 1.15rem;
}

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

.card {
  margin: 2rem 0;
  padding: 1.15rem 1.2rem;
  border: 1px solid var(--edge);
  background: var(--glass);
  border-radius: 1rem;
}

.card h2 {
  margin-top: 0;
}

.card p {
  margin: 0.35rem 0;
}

.card p:last-child {
  margin-bottom: 0;
}

.muted {
  font-size: 0.95rem;
}

.nav {
  margin-top: 2.4rem;
}