.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.95rem;
  color: var(--heading);
  font-weight: 700;
  font-size: 1rem;
  white-space: nowrap;
}

.brand::before {
  content: none;
  display: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.65rem;
  align-items: center;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  color: var(--heading);
  text-decoration: none;
  padding: 0.35rem 0 0.4rem;
  border-radius: 0;
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links a[aria-current='page'] {
  background: transparent;
  border-color: transparent;
  box-shadow: inset 0 -2px 0 var(--accent);
}

.nav-links > * + *::before {
  content: none;
}

.nav-item-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.35rem 0 0.15rem;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.nav-item-dropdown:hover {
  background: transparent;
  border-color: transparent;
}

.nav-item-dropdown .nav-parent {
  padding: 0;
  border: none;
  background: transparent;
}

.nav-item-dropdown .nav-parent:hover {
  background: transparent;
  border-color: transparent;
}

.nav-item-dropdown .dropdown-caret {
  margin-left: 0.35rem;
  font-size: 0.75rem;
  opacity: 0.7;
  transition: transform 0.2s ease;
}

.nav-item-dropdown.is-open .dropdown-caret {
  transform: rotate(180deg);
}

.nav-item-dropdown .dropdown-toggle {
  border: none;
  background: transparent;
  color: var(--heading);
  border-radius: 999px;
  padding: 0 0.2rem;
  margin-left: 0.2rem;
  cursor: pointer;
  line-height: 1;
  transition: all 0.2s ease;
}

.nav-item-dropdown .dropdown-toggle:hover {
  background: transparent;
  border-color: transparent;
}

.nav-submenu {
  position: absolute;
  top: calc(100% - 0.05rem);
  left: -0.7rem;
  --rail-x: 0.55rem;
  --star-size: 24px;
  min-width: 260px;
  background: var(--bg);
  border: none;
  border-radius: 0.8rem;
  padding: 0.45rem 0.45rem 0.45rem 1.2rem;
  box-shadow: none;
  z-index: 100;
  opacity: 0;
  transform: translateY(-6px);
  max-height: 0;
  overflow: hidden;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease, max-height 0.22s ease;
}

.nav-submenu::before {
  content: "";
  position: absolute;
  left: var(--rail-x);
  top: 0.65rem;
  bottom: 0.65rem;
  width: 6px;
  border-radius: 999px;
  background: #ffdb70;
  opacity: 1;
}

.nav-submenu::after {
  content: "";
  position: absolute;
  left: var(--rail-x);
  bottom: 0.28rem;
  width: var(--star-size);
  height: var(--star-size);
  background: #ffdb70;
  clip-path: polygon(50% 0%, 62% 38%, 100% 50%, 62% 62%, 50% 100%, 38% 62%, 0% 50%, 38% 38%);
  opacity: 1;
  transform: translateX(-50%);
  transform-origin: center;
  box-shadow: 0 0 6px rgba(255,219,112,0.35);
  transition: opacity 0.24s ease, transform 0.24s ease;
}

.nav-item-dropdown.is-open .nav-submenu {
  opacity: 1;
  transform: translateY(0);
  max-height: 18rem;
  pointer-events: auto;
}

.nav-item-dropdown.is-open .nav-submenu::before {
  opacity: 1;
}

.nav-item-dropdown.is-open .nav-submenu::after {
  opacity: 1;
  transform: translateX(-50%);
}

.nav-submenu a {
  display: block;
  color: var(--heading);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.4rem 0.55rem;
  border-radius: 0.55rem;
  transition: background-color 0.2s ease;
}

.nav-submenu a::before {
  content: none !important;
}

.nav-submenu a:hover {
  background: rgba(162, 177, 255, 0.15);
}

.mobile-domain-group {
  display: none;
}

.menu-toggle {
  display: none;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid rgba(162, 177, 255, 0.5);
  background: rgba(255, 255, 255, 0.72);
  color: var(--heading);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.menu-toggle:hover {
  background: rgba(162, 177, 255, 0.15);
  border-color: rgba(162, 177, 255, 0.45);
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav-links.nav-menu {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 1rem;
    right: 1rem;
    display: none;
    flex-direction: column;
    gap: 0.3rem;
    align-items: stretch;
    justify-content: flex-start;
    background: rgba(255, 252, 247, 0.98);
    border: 1px solid rgba(114, 169, 255, 0.16);
    border-radius: 1.1rem;
    padding: 0.58rem;
    box-shadow: 0 16px 34px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(255, 255, 255, 0.6) inset;
    backdrop-filter: blur(10px);
  }

  .nav-links.nav-menu a {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    width: 100%;
    padding: 0.72rem 0.84rem;
    border-radius: 0.95rem;
    border: 1px solid rgba(114, 169, 255, 0.16);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(247, 250, 255, 0.9));
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset, 0 6px 14px rgba(114, 169, 255, 0.06);
  }

  .nav-links.nav-menu a::before {
    content: '✦';
    color: #ffdb70;
    font-size: 0.9rem;
    line-height: 1;
    text-shadow: 0 0 8px rgba(255, 219, 112, 0.3);
    flex: 0 0 auto;
  }

  .nav-links.nav-menu a::after {
    content: '';
    flex: 1;
    min-width: 0.9rem;
    max-width: 1.7rem;
    height: 1px;
    background: linear-gradient(90deg, rgba(114, 169, 255, 0.28), transparent);
    opacity: 0.7;
  }

  .nav-links.nav-menu a:hover,
  .nav-links.nav-menu a[aria-current='page'] {
    background: linear-gradient(180deg, rgba(114, 169, 255, 0.12), rgba(255, 255, 255, 0.94));
    border-color: rgba(114, 169, 255, 0.24);
  }

  .nav-links.nav-menu .mobile-domain-group {
    display: block;
    margin: 0.45rem 0 0;
    padding: 0.2rem 0 0;
    border-top: 1px solid rgba(162, 177, 255, 0.16);
    border-bottom: 0;
    background: transparent;
    border-radius: 0;
  }

  .mobile-domain-title {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin-bottom: 0.48rem;
    color: var(--heading);
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .mobile-domain-title .line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, rgba(114, 169, 255, 0.56), rgba(114, 169, 255, 0.08));
  }

  .mobile-domain-title .star {
    flex: 0 0 auto;
    color: #ffdb70;
    font-size: 1rem;
    line-height: 1;
  }

  .mobile-domain-links {
    display: grid;
    gap: 0.24rem;
  }

  .mobile-domain-link {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    width: 100%;
    padding: 0.72rem 0.84rem;
    border-radius: 0.95rem;
    border: 1px solid rgba(114, 169, 255, 0.16);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(247, 250, 255, 0.9));
    color: var(--heading);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.88rem;
    line-height: 1.2;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset, 0 6px 14px rgba(114, 169, 255, 0.05);
  }

  .mobile-domain-link::before {
    content: '✦';
    flex: 0 0 auto;
    color: #ffdb70;
    font-size: 0.92rem;
    line-height: 1;
    text-shadow: 0 0 8px rgba(255, 219, 112, 0.35);
  }

  .mobile-domain-link::after {
    content: none;
  }

  .mobile-domain-link:hover {
    background: linear-gradient(180deg, rgba(114, 169, 255, 0.1), rgba(255, 255, 255, 0.94));
    border-color: rgba(114, 169, 255, 0.24);
  }

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

  .nav-links.nav-menu > * + *::before {
    content: none;
  }

  .nav-links.nav-menu .nav-item-dropdown {
    display: none !important;
  }

  .nav-submenu {
    display: none !important;
  }

  .dropdown-toggle,
  .dropdown-caret {
    display: none !important;
  }
}

@media (max-width: 900px) {
  .topbar,
  .tout-topbar,
  header.article-topbar {
    padding: 0.9rem 0.9rem 1.5rem;
    gap: 0.75rem;
  }

  .brand,
  .tout-brand,
  .article-brand {
    font-size: 0.92rem;
    gap: 0.6rem;
    min-width: 0;
  }

  .nav-links.nav-menu,
  .tout-nav.nav-menu,
  .article-nav.nav-menu {
    left: 0.65rem;
    right: 0.65rem;
    max-height: calc(100vh - 6.5rem);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 600px) {
  .site-announcement-track {
    font-size: 0.67rem;
    letter-spacing: 0.01em;
  }

  .topbar,
  .tout-topbar,
  header.article-topbar {
    padding: 0.8rem 0.65rem 1.3rem;
  }

  .menu-toggle {
    padding: 0.4rem 0.72rem;
    font-size: 0.86rem;
  }

  .brand,
  .tout-brand,
  .article-brand {
    font-size: 0.84rem;
  }

  .nav-links.nav-menu,
  .tout-nav.nav-menu,
  .article-nav.nav-menu {
    left: 0.5rem;
    right: 0.5rem;
    border-radius: 0.75rem;
  }
}

/* Header harmonization */
.topbar,
.tout-topbar,
header.article-topbar {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.05rem 2.15rem 1.9rem;
  gap: 1.5rem;
}

.brand,
.tout-brand,
.article-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.95rem;
  font-size: 1rem;
  white-space: nowrap;
}

.nav-links,
.tout-nav,
.article-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.35rem;
}

.nav-links a,
.tout-nav a,
.article-nav a {
  display: inline-flex;
  align-items: center;
  color: var(--heading);
  text-decoration: none;
  font-weight: 600;
  padding: 0.35rem 0 0.4rem;
  border-radius: 0;
  border: none;
}

.nav-links > * + *::before,
.tout-nav > * + *::before,
.article-nav > * + *::before {
  content: none;
}

.nav-links a:hover,
.tout-nav a:hover,
.article-nav a:hover,
.nav-links a[aria-current='page'],
.tout-nav a[aria-current='page'],
.article-nav a[aria-current='page'] {
  background: transparent;
  border-color: transparent;
  box-shadow: inset 0 -2px 0 var(--accent);
}

.nav-item-dropdown,
.tout-nav .nav-item-dropdown,
.article-nav .nav-item-dropdown {
  padding: 0.35rem 0 0.4rem;
}

@media (max-width: 960px) {
  .topbar,
  .tout-topbar,
  header.article-topbar {
    padding: 1rem 1rem 1.8rem;
  }
}

@media (max-width: 900px) {
  .topbar,
  .tout-topbar,
  header.article-topbar {
    padding: 0.9rem 0.9rem 1.5rem;
    gap: 0.75rem;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 2.3rem;
    padding: 0.42rem 0.72rem;
    border-radius: 0.72rem;
    border: 1px solid rgba(255, 219, 112, 0.55);
    background: rgba(255, 255, 255, 0.9);
  }

  .menu-toggle:focus-visible {
    outline: 2px solid #6e7fdc;
    outline-offset: 2px;
  }

  .menu-toggle-icon {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.22rem;
    width: 1rem;
    height: 0.9rem;
  }

  .menu-toggle-icon span {
    display: block;
    height: 2px;
    width: 100%;
    border-radius: 999px;
    background: var(--heading);
    transition: transform 0.2s ease, opacity 0.2s ease;
    transform-origin: center;
  }

  .menu-toggle[aria-expanded='true'] .menu-toggle-icon span:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-toggle[aria-expanded='true'] .menu-toggle-icon span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded='true'] .menu-toggle-icon span:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
  }

  .menu-toggle-label {
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1;
  }

  .nav-links.nav-menu {
    top: calc(100% + 0.4rem);
  }

  .brand,
  .tout-brand,
  .article-brand {
    font-size: 0.92rem;
    gap: 0.6rem;
    min-width: 0;
  }

  .brand::before,
  .tout-brand::before,
  .article-brand::before {
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 0.6rem;
  }

  .nav-links.nav-menu,
  .tout-nav.nav-menu,
  .article-nav.nav-menu {
    left: 0.65rem;
    right: 0.65rem;
    max-height: calc(100vh - 6.5rem);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 600px) {
  .site-announcement-track {
    font-size: 0.67rem;
    letter-spacing: 0.01em;
  }

  .topbar,
  .tout-topbar,
  header.article-topbar {
    padding: 0.8rem 0.65rem 1.3rem;
  }

  .menu-toggle {
    padding: 0.38rem 0.62rem;
  }

  .menu-toggle-label {
    display: none;
  }

  .brand,
  .tout-brand,
  .article-brand {
    font-size: 0.84rem;
  }

  .brand::before,
  .tout-brand::before,
  .article-brand::before {
    width: 1.95rem;
    height: 1.95rem;
  }

  .nav-links.nav-menu,
  .tout-nav.nav-menu,
  .article-nav.nav-menu {
    left: 0.5rem;
    right: 0.5rem;
    border-radius: 0.75rem;
  }
}