:root {
  color-scheme: dark;
  --background: #090b1f;
  --surface: #121630;
  --text: #f5f3ff;
  --muted: #bbb9d0;
  --accent: #b9a8ff;
  --mint: #83e6cf;
  --border: rgba(255, 255, 255, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 5%, rgba(130, 103, 235, 0.26), transparent 32rem),
    radial-gradient(circle at 85% 10%, rgba(78, 206, 180, 0.14), transparent 27rem),
    var(--background);
}

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

a:hover {
  color: var(--mint);
}

.shell {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: linear-gradient(145deg, #806bea, #332a79);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.88rem;
}

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

main {
  margin: 30px 0 72px;
  padding: clamp(28px, 6vw, 56px);
  border: 1px solid var(--border);
  border-radius: 28px;
  background: rgba(18, 22, 48, 0.86);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(16px);
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.025em;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(2.1rem, 8vw, 3.6rem);
}

h2 {
  margin: 2.2em 0 0.55em;
  font-size: 1.35rem;
}

h3 {
  margin: 1.7em 0 0.4em;
  font-size: 1.05rem;
}

p,
ul {
  color: var(--muted);
}

ul {
  padding-left: 1.25rem;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--mint);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.lede {
  max-width: 58ch;
  margin: 0;
  font-size: 1.12rem;
}

.meta {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.card {
  display: block;
  min-height: 142px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.035);
  text-decoration: none;
}

.card strong {
  display: block;
  margin-bottom: 8px;
}

.card span {
  color: var(--muted);
  font-size: 0.92rem;
}

footer {
  padding: 0 0 42px;
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

@media (max-width: 580px) {
  header {
    align-items: flex-start;
    flex-direction: column;
  }

  main {
    margin-top: 8px;
    border-radius: 22px;
  }
}