.skip-link.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  background: #111;
  padding: .5rem 1rem;
  border-radius: .5rem;
  z-index: 9999;
}

header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
  background: rgba(11,16,32,.6);
  border-bottom: 1px solid rgba(148,163,184,.15);
}
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-weight: 700;
}
.brand svg { width: 28px; height: 28px }

.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}
.nav-links a {
  padding: .5rem .75rem;
  border-radius: .75rem;
}
.nav-links a[aria-current="page"],
.nav-links a:hover {
  background: rgba(124,58,237,.12);
}

/* bouton hamburger */
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(148,163,184,.25);
  color: var(--text);
  padding: .4rem .6rem;
  border-radius: .6rem;
  font-size: 1.4rem;
  cursor: pointer;
}

main { min-height: calc(100vh - 200px) }
.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: 3rem 0;
}
.hero h1 {
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1.15;
  margin: .5rem 0 1rem;
}
.hero p { color: var(--muted) }

footer {
  border-top: 1px solid rgba(148,163,184,.15);
  padding: 2rem 0;
  margin-top: 3rem;
}

.grid { display: grid; gap: 1rem }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr) }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr) }

/* Responsive */
@media (max-width: 900px) {
  .hero,
  .grid.cols-2,
  .grid.cols-3 { grid-template-columns: 1fr }

  .mobile-toggle { display: inline-flex }

  .nav-links {
    display: none;
    position: absolute;
    top: 56px;
    right: 1rem;
    background: #0b1020;
    border: 1px solid rgba(148,163,184,.2);
    padding: .5rem;
    border-radius: .8rem;
    flex-direction: column;
    width: min(260px, 90vw);
  }
  .nav-links.open { display: flex }
}