* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #03060D, #08111E, #05070D);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
main { padding: 70px 1.25rem 5rem; }
section { margin-bottom: 3rem; }
.container {
  max-width: 1300px;
  margin: auto;
  width: 100%;
}
.surface {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 0 35px rgba(14,94,255,0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 1000;
  background: var(--primary);
  color: white;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
}
.skip-link:focus { top: 1rem; }