.mobile-nav-toggle {
  display: none;
  width: 50px;
  height: 50px;
  margin-left: auto;
  padding: 0;
  flex: 0 0 50px;
  align-items: center;
  justify-content: center;
  appearance: none;
  border: 2px solid #111111;
  border-radius: 999px;
  background: #ffe600;
  color: #111111;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.mobile-nav-toggle:hover,
.mobile-nav-toggle:focus-visible {
  background: #ffffff;
  transform: translateY(-1px);
}

.mobile-nav-toggle:focus-visible,
.mobile-nav-close:focus-visible,
.mobile-nav-links a:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 4px;
}

.mobile-nav-toggle__icon {
  position: relative;
  width: 22px;
  height: 16px;
  display: block;
}

.mobile-nav-toggle__icon span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.mobile-nav-toggle__icon span:nth-child(1) { top: 0; }
.mobile-nav-toggle__icon span:nth-child(2) { top: 7px; }
.mobile-nav-toggle__icon span:nth-child(3) { top: 14px; }

.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: grid;
  grid-template-columns: 1fr min(88vw, 430px);
  min-height: 100vh;
  min-height: 100dvh;
}

.mobile-nav-overlay[hidden] {
  display: none !important;
}

.mobile-nav-backdrop {
  grid-column: 1;
  grid-row: 1;
  background: rgba(0, 0, 0, 0.68);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.mobile-nav-dialog {
  grid-column: 2;
  grid-row: 1;
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 100%;
  padding:
    max(24px, env(safe-area-inset-top))
    max(22px, env(safe-area-inset-right))
    max(28px, env(safe-area-inset-bottom))
    24px;
  flex-direction: column;
  overflow-y: auto;
  overscroll-behavior: contain;
  background:
    radial-gradient(circle at 100% 0, rgba(255, 230, 0, 0.16), transparent 34%),
    #070707;
  color: #ffffff;
  box-shadow: -24px 0 70px rgba(0, 0, 0, 0.36);
  transform: translateX(100%);
  transition: transform 0.25s ease;
}

.mobile-nav-overlay.is-open .mobile-nav-backdrop {
  opacity: 1;
}

.mobile-nav-overlay.is-open .mobile-nav-dialog {
  transform: translateX(0);
}

.mobile-nav-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(255, 230, 0, 0.3);
}

.mobile-nav-brand {
  min-width: 0;
  display: flex;
  align-items: center;
}

.mobile-nav-brand img {
  display: block;
  width: min(220px, 58vw);
  height: auto;
  max-height: 46px;
  object-fit: contain;
  object-position: left center;
}

.mobile-nav-close {
  width: 48px;
  height: 48px;
  padding: 0;
  flex: 0 0 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  appearance: none;
  border: 2px solid #ffe600;
  border-radius: 999px;
  background: transparent;
  color: #ffe600;
  cursor: pointer;
  font: inherit;
  font-size: 34px;
  font-weight: 400;
  line-height: 1;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.mobile-nav-close:hover,
.mobile-nav-close:focus-visible {
  background: #ffe600;
  color: #111111;
  transform: rotate(4deg);
}

.mobile-nav-title {
  margin: 34px 0 10px;
  color: #ffe600;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.mobile-nav-links {
  display: grid;
  gap: 4px;
}

.mobile-nav-links a {
  display: block;
  padding: 15px 16px;
  border: 1px solid transparent;
  border-radius: 14px;
  color: #ffffff;
  text-decoration: none;
  font-size: clamp(21px, 5.8vw, 28px);
  font-weight: 760;
  line-height: 1.12;
  letter-spacing: -0.025em;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.mobile-nav-links a:hover,
.mobile-nav-links a:focus-visible {
  border-color: rgba(255, 230, 0, 0.42);
  background: rgba(255, 230, 0, 0.09);
  color: #ffe600;
}

.mobile-nav-links a[aria-current="page"] {
  border-color: #ffe600;
  background: #ffe600;
  color: #111111;
}

.mobile-nav-footer {
  margin-top: auto;
  padding: 28px 16px 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.5;
}

body.mobile-nav-open {
  overflow: hidden;
  overscroll-behavior: none;
}

@media (max-width: 900px) {
  .mobile-nav-toggle {
    display: inline-flex !important;
  }

  .nav,
  .sticky-header__nav {
    display: none !important;
  }
}

@media (max-width: 640px) {
  .back-to-top {
    right: 2px !important;
    bottom: max(6px, env(safe-area-inset-bottom)) !important;
    padding: 5px 2px;
    font-size: 14px !important;
  }

  body:has(input:focus, textarea:focus, select:focus) .back-to-top {
    opacity: 0 !important;
    pointer-events: none !important;
  }
}

@media (max-width: 390px) {
  .mobile-nav-overlay {
    grid-template-columns: 34px 1fr;
  }

  .mobile-nav-dialog {
    padding-left: 20px;
  }

  .mobile-nav-links a {
    font-size: 21px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-nav-toggle,
  .mobile-nav-backdrop,
  .mobile-nav-dialog,
  .mobile-nav-close,
  .mobile-nav-links a {
    transition: none !important;
  }
}