:root {
  color-scheme: dark;
  --bg: #070a12;
  --text: #e8eef9;
  --muted: #93a2bb;
  --cyan: #4fd2ff;
  --line: #243049;
  --panel: #101826;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.55 system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 420px at 15% -10%, #1a2b4d 0%, transparent 55%),
    var(--bg);
}
a { color: var(--cyan); text-decoration: none; }
.wrap { max-width: 1000px; margin: 0 auto; padding: 28px 20px; }
header.wrap {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.brand { font-weight: 800; letter-spacing: -0.03em; font-size: 1.2rem; }
.brand span { color: var(--cyan); }
nav a { margin-left: 16px; color: var(--muted); }
nav a:hover { color: var(--text); }
.hero { padding: 48px 0 24px; }
h1 {
  font: 800 clamp(2rem, 5vw, 3.4rem)/1.05 system-ui;
  letter-spacing: -0.04em;
  margin: 0 0 16px;
}
.lede { font-size: 1.15rem; color: var(--muted); max-width: 40rem; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.btn {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 12px 18px;
  color: var(--text);
  background: #0c1320;
}
.btn.primary { background: linear-gradient(90deg, #1a3a5c, #2a1f55); border-color: #3d5378; }
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 36px 0;
}
.grid article, .panel {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  padding: 18px;
}
h2 { margin: 0 0 10px; font-size: 1.1rem; }
.panel ul { margin: 0; padding-left: 1.1rem; color: var(--muted); }
.panel code { color: var(--cyan); }
footer { color: var(--muted); font-size: 0.92rem; border-top: 1px solid var(--line); margin-top: 40px; }
@media (max-width: 800px) {
  .grid { grid-template-columns: 1fr; }
  nav { display: none; }
}