.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: color-mix(in srgb, var(--to-white) 96%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid color-mix(in srgb, var(--to-line) 90%, transparent);
  box-shadow: 0 1px 0 rgba(58, 28, 190, .03);
}
.utility-bar {
  border-bottom: 1px solid color-mix(in srgb, var(--to-line) 78%, transparent);
  background: color-mix(in srgb, var(--to-header-warm) 82%, var(--to-white));
}
.utility-inner {
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .83rem;
  color: var(--to-ink-2);
}
.utility-group { display: flex; align-items: center; gap: 18px; }
.utility-link { color: var(--to-ink-2); font-weight: 650; }
.utility-link:hover { color: var(--to-primary); }
.main-nav {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}
.brand-link { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand-link img { width: 190px; height: auto; }
.brand-link-inline { gap: 12px; color: var(--to-ink); }
.brand-link-mark {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 31px;
  color: var(--to-primary);
  flex: 0 0 auto;
}
.brand-link-mark svg { width: 100%; height: 100%; }
.brand-link-name {
  color: var(--to-ink);
  font-size: 1.25rem;
  line-height: 1;
  font-weight: 850;
  white-space: nowrap;
}
.nav-center {
  display: flex; align-items: center; justify-content: center; gap: 3px; flex: 1;
}
.nav-item { position: relative; }
.nav-button, .nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 11px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--to-ink);
  font-size: .95rem;
  font-weight: 720;
}
.nav-button svg { width: 14px; height: 14px; transition: transform .18s ease; }
.nav-item.open .nav-button svg, .nav-item:hover .nav-button svg { transform: rotate(180deg); }
.nav-button:hover, .nav-button.active, .nav-link:hover, .nav-link.active { color: var(--to-primary); background: var(--to-primary-soft); }
.nav-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.nav-login { font-weight: 750; font-size: .93rem; color: var(--to-ink); padding: 10px 6px; }
.nav-login:hover { color: var(--to-primary); }
.mega-menu {
  position: absolute;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  top: calc(100% + 8px);
  width: min(940px, calc(100vw - 40px));
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.nav-item.open .mega-menu, .nav-item:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.mega-inner {
  background: color-mix(in srgb, var(--to-white) 92%, var(--to-lilac));
  border: 1px solid var(--to-line);
  border-radius: 18px;
  box-shadow: var(--to-shadow-lg);
  overflow: hidden;
}
.mega-grid { display: grid; grid-template-columns: 1.1fr 1.6fr; min-height: 300px; }
.mega-feature {
  position: relative;
  overflow: hidden;
  color: var(--to-white);
  background:
    radial-gradient(circle at 86% 14%, color-mix(in srgb, var(--to-secondary) 32%, transparent), transparent 34%),
    radial-gradient(circle at 12% 86%, color-mix(in srgb, var(--to-primary) 22%, transparent), transparent 38%),
    linear-gradient(160deg, var(--to-deep), var(--to-deep-2) 74%, var(--to-primary-3));
  padding: 26px;
  border-right: 1px solid color-mix(in srgb, var(--to-primary) 18%, transparent);
}
.mega-feature::before,
.mega-feature::after {
  content: "";
  position: absolute;
  right: -58px;
  bottom: 34px;
  width: 250px;
  height: 96px;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 50%;
  transform: rotate(-18deg);
  pointer-events: none;
}
.mega-feature::after {
  right: -28px;
  bottom: 62px;
  width: 180px;
  height: 68px;
  border-style: dashed;
}
.mega-feature-title { font-size: 1.32rem; line-height: 1.15; font-weight: 800; letter-spacing: 0; margin-bottom: 10px; }
.mega-feature-title,
.mega-feature p,
.mega-feature .btn,
.mega-feature .mega-pill-row {
  position: relative;
  z-index: 1;
}
.mega-feature p { color: color-mix(in srgb, var(--to-white) 78%, var(--to-secondary)); margin-bottom: 18px; }
.mega-pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.mega-pill { font-size: .76rem; font-weight: 760; padding: 6px 9px; border: 1px solid rgba(255, 255, 255, .16); border-radius: 999px; background: rgba(255, 255, 255, .08); color: var(--to-white); }
.mega-content { padding: 22px; }
.mega-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.mega-column h4 {
  font-size: .77rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--to-soft);
  margin-bottom: 10px;
}
.mega-card {
  display: block;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid transparent;
}
.mega-card:hover { background: var(--to-lilac); border-color: var(--to-primary-border); }
.mega-card strong { display: block; font-size: .96rem; margin-bottom: 2px; }
.mega-card span { display: block; color: var(--to-muted); font-size: .85rem; line-height: 1.4; }
.mobile-toggle {
  display: none;
  width: 42px; height: 42px; border-radius: 10px;
  border: 1px solid var(--to-line); background: var(--to-white); align-items: center; justify-content: center;
}
.mobile-toggle span, .mobile-toggle span::before, .mobile-toggle span::after {
  content: ""; display: block; width: 18px; height: 2px; background: var(--to-ink); border-radius: 999px; transition: .18s ease;
}
.mobile-toggle span::before { transform: translateY(-6px); }
.mobile-toggle span::after { transform: translateY(4px); }
body.mobile-nav-open .mobile-toggle span { background: transparent; }
body.mobile-nav-open .mobile-toggle span::before { transform: translateY(1px) rotate(45deg); }
body.mobile-nav-open .mobile-toggle span::after { transform: translateY(-1px) rotate(-45deg); }
.mobile-panel { display: none; border-top: 1px solid var(--to-line); background: color-mix(in srgb, var(--to-white) 94%, var(--to-lilac)); }
.mobile-panel-inner { padding: 18px 20px 24px; }
.mobile-section { border-bottom: 1px solid var(--to-line); padding: 10px 0; }
.mobile-summary { display: flex; align-items: center; justify-content: space-between; font-weight: 780; padding: 10px 0; }
.mobile-links { display: grid; gap: 8px; padding: 6px 0 12px 8px; }
.mobile-links a { color: var(--to-muted); font-weight: 650; }
.mobile-actions { display: grid; gap: 10px; margin-top: 18px; }
@media (max-width: 1040px) {
  .utility-bar, .nav-center, .nav-actions { display: none; }
  .main-nav { height: 64px; }
  .mobile-toggle { display: inline-flex; }
  body.mobile-nav-open .mobile-panel { display: block; }
  .brand-link img { width: 174px; }
  .brand-link-mark { width: 42px; height: 29px; }
  .brand-link-name { font-size: 1.16rem; }
}

/* Keeps hover gap forgiving between top nav and mega menu. */
.mega-menu::before { content: ""; position: absolute; left: 0; right: 0; top: -14px; height: 14px; }
.nav-button.active { color: var(--to-primary); background: var(--to-primary-soft); }