:root {
  color-scheme: dark;
  --bg: #0b1525;
  --surface: #14243a;
  --border: #263c57;
  --text: #edf4ff;
  --muted: #a8bbd3;
  --accent: #79baff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: radial-gradient(ellipse at top, #192e4c, var(--bg) 70%);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: inherit; text-decoration: none; }
header { border-bottom: 1px solid var(--border); }
nav {
  max-width: 1100px;
  margin: auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.logo { font-size: 23px; font-weight: 750; color: white; }
.links { display: flex; flex-wrap: wrap; gap: 22px; }
.links a { color: var(--muted); font-size: 14px; }
.links a:hover { color: var(--accent); }
main { width: 100%; max-width: 1100px; margin: auto; padding: 0 24px; flex: 1; }
.hero { padding: 100px 0 85px; max-width: 780px; }
.tag {
  display: inline-block;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 18px;
}
h1 { font-size: clamp(38px, 6vw, 64px); line-height: 1.13; margin: 0 0 24px; letter-spacing: -1.5px; }
.hero p, .page p { color: var(--muted); font-size: 18px; max-width: 670px; }
.button {
  display: inline-block;
  margin-top: 25px;
  padding: 13px 25px;
  border-radius: 9px;
  background: #3987dc;
  color: white;
  font-weight: 650;
}
.button:hover { background: #59a4f3; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding-bottom: 85px; }
.cards article, .panel {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}
.cards h2 { font-size: 20px; margin: 0 0 10px; }
.cards p { color: var(--muted); margin: 0; }
.page { padding: 75px 0; }
.page h1 { font-size: clamp(32px, 5vw, 48px); }
.page h2 { margin-top: 35px; }
footer {
  padding: 25px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}
@media (max-width: 700px) {
  nav { justify-content: center; }
  .links { justify-content: center; gap: 12px 18px; }
  .hero { padding: 65px 0; }
  .cards { grid-template-columns: 1fr; gap: 14px; padding-bottom: 50px; }
  .page { padding: 50px 0; }
}