:root {
  color-scheme: dark;
  --bg: #000000;
  --card: #1a1a1a;
  --card-alt: #111111;
  --border: rgba(255, 255, 255, 0.08);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.62);
  --accent: #35c48a;
  --accent-soft: rgba(53, 196, 138, 0.14);
  --radius: 18px;
  --max: 860px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "SF Pro Text", "Segoe UI", sans-serif;
}

body {
  line-height: 1.6;
}

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

.shell {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 20px 72px;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
}

.hero {
  border: 1px solid var(--border);
  background:
    radial-gradient(circle at top right, rgba(53, 196, 138, 0.12), transparent 32%),
    linear-gradient(180deg, #131313, #090909);
  border-radius: 28px;
  padding: 28px;
  margin-bottom: 24px;
}

.hero h1 {
  margin: 10px 0 10px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}

.hero p {
  margin: 0;
  color: var(--muted);
  max-width: 56ch;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 24px;
}

.nav a {
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--card-alt);
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 0.92rem;
}

.grid {
  display: grid;
  gap: 16px;
}

.card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius);
  padding: 22px;
}

.card h2,
.card h3 {
  margin: 0 0 10px;
}

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

.meta {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(53, 196, 138, 0.28);
  background: var(--accent-soft);
  color: var(--text);
  font-size: 0.9rem;
}

.section {
  margin-top: 18px;
}

.section h2 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}

.section h3 {
  margin-top: 18px;
  font-size: 1rem;
}

.footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.9rem;
}

.list {
  margin: 0;
  padding-left: 18px;
}

.callout {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
}

@media (max-width: 640px) {
  .shell {
    padding: 20px 16px 56px;
  }

  .hero {
    padding: 22px;
  }
}