/* Shared header */
.site-head {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(252, 252, 250, 0.86);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.site-head.scrolled {
  border-bottom-color: var(--line);
}

.head-row {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.brand small {
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0;
}

/* Main navigation */
.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: 8px;
}

.nav > a,
.nav > .mega-parent > .mega-trigger {
  color: var(--ink-2);
  font: 500 15px/1.55 var(--sans);
  text-decoration: none;
}

.nav > .mega-parent > .mega-trigger {
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  text-align: left;
}

.nav > a:hover,
.nav > .mega-parent > .mega-trigger:hover {
  color: var(--ink);
}

.head-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

/* Resources dropdown */
.mega-parent {
  position: relative;
  display: flex;
  align-items: center;
}

.mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 900px;
  padding: 28px;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: 0.25s;
}

.mega-parent:hover .mega-menu,
.mega-parent:focus-within .mega-menu,
.mega-parent.open .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.mega-grid h4 {
  margin-bottom: 12px;
  color: #111827;
}

.mega-grid a {
  display: block;
  margin: 8px 0;
  color: #6b7280;
  text-decoration: none;
}

.mega-grid a:hover {
  color: #2563eb;
}

/* Buttons */
.menu-toggle {
  display: none;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: 600 14px/1 var(--sans);
  cursor: pointer;
}

.btn-ghost {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--ink-2);
}

/* Smaller screens */
@media (max-width: 1020px) {
  .head-row {
    position: relative;
    gap: 12px;
  }

  .menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .head-cta {
    margin-left: 0;
  }

  .nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    left: 0;
    z-index: 50;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    margin: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 12px 28px rgba(21, 24, 58, 0.12);
  }

  .nav.is-open {
    display: flex;
  }

  .nav > a,
  .nav > .mega-parent > .mega-trigger {
    padding: 10px 12px;
  }

  .mega-parent {
    display: block;
  }

  .mega-menu {
    position: static;
    display: none;
    width: auto;
    padding: 8px 12px 12px;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .mega-parent.open .mega-menu {
    display: block;
  }

  .mega-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .head-cta .btn-ghost,
  .brand small {
    display: none;
  }

  .mega-grid {
    grid-template-columns: 1fr;
  }
}