:root {
  color-scheme: dark;
  --bg: #07090d;
  --card: #10141b;
  --elevated: #161b22;
  --text: #e6edf3;
  --muted: #9ba7b3;
  --line: rgba(255, 255, 255, 0.08);
  --accent: #2dd4a7;
  --accent-soft: rgba(45, 212, 167, 0.12);
  --max: 760px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 85% 0%, rgba(45, 212, 167, 0.11), transparent 32rem),
    radial-gradient(circle at 5% 35%, rgba(14, 116, 144, 0.09), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-underline-offset: 3px;
}

a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}

.shell {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(45, 212, 167, 0.34);
  border-radius: 14px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 22px;
  font-weight: 800;
}

.brand-name {
  display: block;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.brand-subtitle {
  display: block;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero {
  padding: 68px 0 28px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2 {
  line-height: 1.18;
}

h1 {
  max-width: 680px;
  margin: 0;
  font-size: clamp(34px, 7vw, 54px);
  letter-spacing: -0.035em;
}

h2 {
  margin: 36px 0 10px;
  font-size: 21px;
  letter-spacing: -0.015em;
}

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

.lead {
  max-width: 650px;
  margin-top: 18px;
  font-size: 17px;
}

.meta {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}

.card {
  margin-top: 18px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(16, 20, 27, 0.88);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.18);
}

.card h2:first-child {
  margin-top: 0;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.link-card {
  display: block;
  min-height: 150px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
  color: var(--text);
  text-decoration: none;
}

.link-card:hover {
  border-color: rgba(45, 212, 167, 0.34);
  background: var(--elevated);
}

.link-card strong {
  display: block;
  font-size: 18px;
}

.link-card span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
}

.callout {
  padding: 18px 20px;
  border-left: 3px solid var(--accent);
  border-radius: 0 14px 14px 0;
  background: var(--accent-soft);
}

.callout p {
  margin: 0;
  color: var(--text);
}

ul {
  padding-left: 22px;
}

footer {
  margin-top: 42px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 600px) {
  .shell {
    width: min(100% - 24px, var(--max));
    padding-top: 20px;
  }

  .hero {
    padding-top: 48px;
  }

  .card {
    padding: 19px;
    border-radius: 18px;
  }

  .link-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}