.site-shell {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 40px;
}
.orb {
  position: fixed;
  inset: auto auto 8% 8%;
  width: min(42vw, 420px);
  height: min(42vw, 420px);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,168,255,0.18) 0%, rgba(124,168,255,0.02) 45%, transparent 68%);
  filter: blur(18px);
  pointer-events: none;
}
.topbar, .section, .footer {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
  border-radius: 28px;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  margin-bottom: 22px;
}
.brand {
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: .15em;
  font-size: .78rem;
  font-weight: 700;
}
.nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.nav a {
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 11px 16px;
  background: rgba(255,255,255,0.03);
}
.nav a.active, .nav a:hover, .nav a:focus-visible {
  border-color: var(--line-strong);
  background: rgba(255,255,255,0.06);
  outline: none;
}
.section {
  padding: 28px 22px;
  margin-bottom: 22px;
}
.footer {
  padding: 18px 20px;
  color: var(--muted);
}
@media (max-width: 820px) {
  .topbar { flex-direction: column; align-items: flex-start; }
}