:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e8eef5;
  --muted: #8fa3b8;
  --accent: #3b82f6;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 1.25rem; }
.top { border-bottom: 1px solid #243044; padding: 1rem 0; }
.top .wrap { display: flex; justify-content: space-between; align-items: center; }
.logo { font-weight: 700; letter-spacing: 0.02em; }
.logo a { color: inherit; text-decoration: none; }
nav a { margin-left: 1rem; color: var(--muted); }
.hero { padding: 4rem 1.25rem 3rem; }
.hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 1rem; }
.lead { color: var(--muted); font-size: 1.1rem; max-width: 36rem; }
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.65rem 1.2rem;
  border-radius: 0.5rem;
  text-decoration: none;
}
.content { padding: 2.5rem 1.25rem; }
.foot { padding: 2rem 1.25rem 3rem; color: var(--muted); }