:root {
  color-scheme: dark;
  --background: #050b16;
  --panel: #0b1728;
  --text: #f4f7fb;
  --muted: #b8c4d6;
  --blue: #43a5ff;
  --red: #ff344d;
  --line: #263750;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 90% 5%, rgba(16, 104, 220, .25), transparent 34rem),
    linear-gradient(145deg, #040812, var(--background));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}

main {
  width: min(860px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 5rem 0 3rem;
}

.hero {
  padding: 3.5rem;
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: linear-gradient(135deg, rgba(16, 52, 95, .78), rgba(8, 20, 38, .9));
  box-shadow: 0 2rem 6rem rgba(0, 0, 0, .28);
}

.hero.compact { padding-block: 2.5rem; }

.eyebrow {
  margin: 0 0 .6rem;
  color: var(--blue);
  font-size: .83rem;
  font-weight: 750;
  letter-spacing: .13em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 14ch;
  font-size: clamp(2.4rem, 7vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -.045em;
}

.compact h1 { max-width: none; font-size: clamp(2.3rem, 6vw, 4rem); }

.lead {
  max-width: 42rem;
  margin: 1.4rem 0 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

section {
  margin-top: 1.25rem;
  padding: 1.8rem 2rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(11, 23, 40, .72);
}

h2 { margin: 0 0 .55rem; font-size: 1.25rem; }
p { margin: .55rem 0 0; color: var(--muted); }
a { color: #72bcff; text-underline-offset: .2em; }
a:hover { color: #a8d8ff; }

footer {
  margin-top: 2rem;
  padding: 1.5rem .25rem;
  border-top: 1px solid var(--line);
  font-size: .9rem;
}

@media (max-width: 600px) {
  main { padding-top: 1rem; }
  .hero { padding: 2rem 1.4rem; }
  section { padding: 1.4rem; }
}