#page-header #nav.qy-nav {
  position: fixed;
  z-index: 110;
  top: var(--qy-nav-offset);
  right: 20px;
  left: 20px;
  display: block;
  width: min(calc(100% - 40px), var(--qy-content));
  height: var(--qy-nav-height);
  margin: 0 auto;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 20px;
  background: transparent;
  box-shadow: none;
  color: var(--qy-text-1);
  transition: background-color var(--qy-duration-base) ease, border-color var(--qy-duration-base) ease, box-shadow var(--qy-duration-base) ease, transform var(--qy-duration-base) var(--qy-ease-standard);
}

#page-header #nav.qy-nav.is-scrolled,
#page-header #nav.qy-nav.is-menu-open {
  border-color: var(--qy-border);
  background: color-mix(in srgb, var(--qy-bg-elevated) 78%, transparent);
  box-shadow: var(--qy-shadow-sm);
  backdrop-filter: saturate(150%) blur(20px);
  -webkit-backdrop-filter: saturate(150%) blur(20px);
}

.qy-nav__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  height: 100%;
  padding: 0 12px 0 14px;
}

#nav .qy-nav__brand-wrap,
#nav #blog_name.qy-nav__brand-wrap {
  display: flex;
  align-items: center;
  min-width: 0;
}

#nav #site-name.qy-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: auto;
  height: 44px;
  padding: 0 12px 0 5px;
  color: var(--qy-text-1) !important;
  text-shadow: none;
}

.qy-brand__mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--qy-border);
  border-radius: 11px;
  background: var(--qy-surface-solid);
  box-shadow: var(--qy-shadow-xs);
  color: var(--qy-text-1);
  font-size: 0.94rem;
  font-weight: 780;
  letter-spacing: -0.05em;
  transition: transform var(--qy-duration-base) var(--qy-ease-spring), border-color var(--qy-duration-fast) ease;
}

.qy-brand:hover .qy-brand__mark {
  border-color: color-mix(in srgb, var(--qy-accent) 42%, var(--qy-border));
  transform: rotate(-5deg) scale(1.04);
}

.qy-brand__name {
  color: var(--qy-text-1);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

#nav #menus.qy-nav__desktop {
  position: static;
  display: flex !important;
  align-items: center;
  justify-content: center;
  gap: 2px;
  height: 44px;
}

#nav .qy-nav__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-width: 52px;
  height: 40px;
  padding: 0 13px;
  border-radius: 12px;
  color: var(--qy-text-2) !important;
  font-size: 0.86rem;
  font-weight: 580;
  line-height: 1;
  text-shadow: none;
  transition: color var(--qy-duration-fast) ease, background-color var(--qy-duration-fast) ease;
}

#nav .qy-nav__link:hover,
#nav .qy-nav__link.is-active,
#nav .qy-nav__dropdown-group[open] > .qy-nav__link {
  background: var(--qy-surface-muted);
  color: var(--qy-text-1) !important;
}

.qy-nav__dropdown-group {
  position: relative;
}

.qy-nav__dropdown-group summary {
  list-style: none;
  cursor: pointer;
}

.qy-nav__dropdown-group summary::-webkit-details-marker {
  display: none;
}

.qy-nav__chevron {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
  transition: transform var(--qy-duration-fast) ease;
}

.qy-nav__dropdown-group[open] .qy-nav__chevron {
  transform: rotate(180deg);
}

.qy-nav__dropdown {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  display: grid;
  width: 260px;
  padding: 8px;
  border: 1px solid var(--qy-border);
  border-radius: 18px;
  background: color-mix(in srgb, var(--qy-bg-elevated) 92%, transparent);
  box-shadow: var(--qy-shadow-md);
  opacity: 0;
  transform: translate(-50%, -6px) scale(0.98);
  transform-origin: 50% 0;
  animation: qy-menu-in var(--qy-duration-base) var(--qy-ease-spring) forwards;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.qy-nav__dropdown-item {
  display: grid;
  grid-template-columns: 8px 1fr;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border-radius: 12px;
  transition: background-color var(--qy-duration-fast) ease;
}

.qy-nav__dropdown-item:hover {
  background: var(--qy-surface-muted);
}

.qy-nav__dropdown-item.is-current {
  background: color-mix(in srgb, var(--qy-accent-soft) 72%, transparent);
}

.qy-nav__dropdown-item.is-current strong {
  color: var(--qy-accent);
}

.qy-nav__dropdown-item > span:last-child {
  display: grid;
  line-height: 1.35;
}

.qy-nav__dropdown-item strong {
  color: var(--qy-text-1);
  font-size: 0.87rem;
  font-weight: 650;
}

.qy-nav__dropdown-item small {
  margin-top: 2px;
  color: var(--qy-text-3);
  font-size: 0.72rem;
}

.qy-nav__dropdown-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--qy-accent);
  box-shadow: 0 0 0 5px var(--qy-accent-soft);
}

.qy-nav__dropdown-dot.is-violet {
  background: var(--qy-violet);
}

.qy-nav__dropdown-dot.is-cyan {
  background: var(--qy-cyan);
}

.qy-nav__dropdown-dot.is-amber {
  background: var(--qy-amber);
}

#nav #nav-right.qy-nav__actions {
  position: static;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 5px;
  margin: 0;
}

.qy-nav__action-wrap {
  display: flex;
}

#nav .qy-nav__icon-button {
  display: grid;
  width: 40px;
  height: 40px;
  margin: 0;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--qy-text-2);
  cursor: pointer;
  transition: color var(--qy-duration-fast) ease, background-color var(--qy-duration-fast) ease, transform var(--qy-duration-fast) ease;
}

#nav .qy-nav__icon-button:hover {
  background: var(--qy-surface-muted);
  color: var(--qy-text-1);
}

#nav .qy-nav__icon-button:active {
  transform: scale(0.94);
}

.qy-nav__icon-button svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.qy-icon-moon,
[data-theme="dark"] .qy-icon-sun {
  display: none;
}

[data-theme="dark"] .qy-icon-moon {
  display: block;
}

.qy-nav__menu-button {
  display: none !important;
}

.qy-menu-icon,
.qy-menu-icon::before,
.qy-menu-icon::after {
  display: block;
  width: 18px;
  height: 1.5px;
  border-radius: 3px;
  background: currentColor;
  transition: transform var(--qy-duration-base) var(--qy-ease-spring), opacity var(--qy-duration-fast) ease;
}

.qy-menu-icon {
  position: relative;
}

.qy-menu-icon::before,
.qy-menu-icon::after {
  position: absolute;
  left: 0;
  content: "";
}

.qy-menu-icon::before {
  transform: translateY(-5px);
}

.qy-menu-icon::after {
  transform: translateY(5px);
}

.is-menu-open .qy-menu-icon {
  background: transparent;
}

.is-menu-open .qy-menu-icon::before {
  transform: rotate(45deg);
}

.is-menu-open .qy-menu-icon::after {
  transform: rotate(-45deg);
}

.qy-nav__page-name {
  position: fixed;
  overflow: hidden;
  width: 1px;
  height: 1px;
  padding: 0;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.qy-nav__compat {
  position: fixed !important;
  overflow: hidden !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  clip: rect(0 0 0 0) !important;
  pointer-events: none !important;
  white-space: nowrap !important;
}

.qy-mobile-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  left: 0;
  display: none;
  overflow-x: hidden;
  overflow-y: auto;
  max-height: calc(100dvh - 96px);
  padding: 0;
  border: 1px solid var(--qy-border);
  border-radius: 20px;
  background: color-mix(in srgb, var(--qy-bg-elevated) 94%, transparent);
  box-shadow: var(--qy-shadow-md);
  opacity: 0;
  transform: translateY(-8px) scale(0.985);
  transform-origin: 50% 0;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.qy-mobile-menu.is-open {
  display: block;
  animation: qy-mobile-menu-in var(--qy-duration-base) var(--qy-ease-spring) forwards;
}

.qy-mobile-menu__inner {
  display: grid;
  padding: 12px;
}

.qy-mobile-menu__eyebrow {
  margin: 10px 10px 5px;
  color: var(--qy-text-3);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.qy-mobile-menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 12px;
  border-radius: 12px;
  color: var(--qy-text-1);
  font-size: 0.94rem;
  font-weight: 600;
}

.qy-mobile-menu__link:hover {
  background: var(--qy-surface-muted);
}

.qy-mobile-menu__link.is-current {
  background: color-mix(in srgb, var(--qy-accent-soft) 72%, transparent);
  color: var(--qy-accent);
}

@keyframes qy-menu-in {
  to {
    opacity: 1;
    transform: translate(-50%, 0) scale(1);
  }
}

@keyframes qy-mobile-menu-in {
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 760px) {
  #page-header #nav.qy-nav {
    top: 10px;
    right: 14px;
    left: 14px;
    width: calc(100% - 28px);
    height: 60px;
    border-radius: 18px;
  }

  .qy-nav__inner {
    grid-template-columns: 1fr auto;
    padding-right: 8px;
    padding-left: 10px;
  }

  #nav #menus.qy-nav__desktop {
    display: none !important;
  }

  #nav .qy-nav__menu-button {
    display: grid !important;
  }

  body.qy-page #page-header.not-top-img {
    height: 80px;
  }

  .qy-brand__name {
    font-size: 0.94rem;
  }
}

@media (max-width: 400px) {
  #nav #qy-theme-toggle {
    display: none;
  }
}