:root {
  --bg: #070b16;
  --panel: #10182b;
  --line: #24314d;
  --text: #e8eefc;
  --muted: #9aa8c7;
  --accent: #5eead4;
  --link: #7dd3fc;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(1200px 500px at 10% -10%, #12304a 0%, transparent 55%), var(--bg);
  color: var(--text);
  line-height: 1.65;
}
a { color: var(--link); }
header, main, footer {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px;
}
header {
  padding-top: 36px;
  padding-bottom: 8px;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  font-size: 13px;
}
h1 { font-size: 2rem; margin: 8px 0 12px; }
h2 { font-size: 1.2rem; margin-top: 32px; }
.meta { color: var(--muted); font-size: 14px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 22px;
  margin: 24px 0;
}
ul { padding-left: 20px; }
li { margin: 6px 0; }
footer {
  color: var(--muted);
  font-size: 13px;
  padding: 40px 20px 48px;
}
.btn {
  display: inline-block;
  margin-top: 8px;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--accent);
  color: #04221c;
  font-weight: 700;
  text-decoration: none;
}
nav a { margin-right: 16px; }