/* ── Navigation ── */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 72px; display: flex; align-items: center;
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s;
}
.site-nav.scrolled {
  background: rgba(255,255,255,0.97);
  border-bottom-color: var(--border);
  box-shadow: 0 1px 12px rgba(0,0,0,0.04);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  width: 100%; display: flex; justify-content: space-between; align-items: center;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 17px; font-weight: 800; color: var(--text);
  letter-spacing: -0.02em;
}
.nav-logo img { width: 28px; height: 28px; object-fit: contain; }
.nav-links {
  display: flex; align-items: center; gap: 32px;
}
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--text-sub);
  position: relative; padding: 4px 0; transition: color 0.2s;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 0; height: 2px; background: var(--gold);
  transition: width 0.3s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--gold); }
.nav-links a.active::after { width: 100%; }

.nav-cta {
  padding: 10px 24px; background: var(--gold); color: #fff;
  font-size: 13px; font-weight: 700; border-radius: var(--radius-sm);
  transition: all 0.3s;
}
.nav-cta:hover { background: var(--gold-light); }

/* Hamburger */
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  padding: 6px; cursor: pointer;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text); transition: all 0.3s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none; position: fixed; inset: 0; top: 72px;
  background: rgba(255,255,255,0.98); z-index: 99;
  flex-direction: column; align-items: center; justify-content: center; gap: 28px;
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.mobile-menu.open { opacity: 1; pointer-events: all; }
.mobile-menu a {
  font-size: 1.3rem; font-weight: 600; color: var(--text);
  transition: color 0.2s;
}
.mobile-menu a:hover { color: var(--gold); }

@media (max-width: 768px) {
  .site-nav { height: 60px; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .mobile-menu { display: flex; top: 60px; }
}