:root {
  color-scheme: dark;
  --bg: #050509;
  --card: #11141a;
  --text: #f5f5f5;
  --muted: #aeb6c2;
  --accent: #00afff;
  --line: #252b35;
  --max: 920px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}
a { color: var(--accent); }
header { border-bottom: 1px solid var(--line); background: #050509; }
.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 22px;
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.brand { font-weight: 800; }
nav a { margin-left: 14px; text-decoration: none; color: var(--muted); }
main { max-width: var(--max); margin: 0 auto; padding: 56px 22px 80px; }
.hero { padding: 42px 0 34px; }
h1 { font-size: clamp(2.1rem, 5vw, 3.7rem); line-height: 1.08; margin: 0 0 18px; }
h2 { margin-top: 38px; font-size: 1.45rem; }
h3 { margin-top: 26px; font-size: 1.1rem; }
p, li { color: #e7eaf0; }
.muted { color: var(--muted); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  margin: 24px 0;
}
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.button {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  background: var(--accent);
  color: #00131c;
}
.button.secondary { background: transparent; color: var(--text); border: 1px solid var(--line); }
footer { border-top: 1px solid var(--line); padding: 28px 22px 44px; color: var(--muted); }
.footer-inner { max-width: var(--max); margin: 0 auto; }
ul { padding-left: 22px; }