.mobile-post-toc {
  --mobile-toc-accent: var(--link-hover-color, #2f80ed);
  position: fixed;
  inset: 0;
  z-index: 1025;
  color: var(--text-color, #333);
  pointer-events: none;
}

.mobile-post-toc__floating {
  position: fixed;
  right: max(12px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  pointer-events: auto;
}

.mobile-post-toc__toggle,
.mobile-post-toc__close {
  appearance: none;
  border: 0;
  color: inherit;
  font: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.mobile-post-toc__toggle {
  display: grid;
  width: 40px;
  height: 40px;
  padding: 0;
  place-items: center;
  border-radius: 50%;
  background: var(--board-bg-color, rgba(255, 255, 255, .88));
  box-shadow: 0 2px 10px rgba(0, 0, 0, .12);
  opacity: .8;
}

.mobile-post-toc__toggle > span {
  display: flex;
  width: 18px;
  flex-direction: column;
  align-items: flex-end;
  gap: 3px;
}

.mobile-post-toc__toggle i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}

.mobile-post-toc__toggle i:nth-child(1) { width: 18px; }
.mobile-post-toc__toggle i:nth-child(2) { width: 14px; }
.mobile-post-toc__toggle i:nth-child(3) { width: 10px; }

.mobile-post-toc__toggle:focus-visible,
.mobile-post-toc__close:focus-visible,
.mobile-post-toc__link:focus-visible {
  outline: 2px solid var(--mobile-toc-accent);
  outline-offset: 2px;
}

.mobile-post-toc__backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: rgba(0, 0, 0, .36);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .24s ease, visibility .24s ease;
}

.mobile-post-toc__drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 1;
  display: flex;
  width: min(86vw, 360px);
  height: 100vh;
  height: 100dvh;
  flex-direction: column;
  color: var(--text-color, #333);
  background: var(--board-bg-color, #fff);
  box-shadow: -8px 0 28px rgba(0, 0, 0, .2);
  transform: translateX(105%);
  visibility: hidden;
  pointer-events: auto;
  transition: transform .25s ease, visibility .25s ease;
}

.mobile-post-toc.is-open {
  z-index: 1060;
}

.mobile-post-toc.is-open .mobile-post-toc__backdrop {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-post-toc.is-open .mobile-post-toc__drawer {
  transform: translateX(0);
  visibility: visible;
}

.mobile-post-toc__drawer-header {
  display: flex;
  min-height: 64px;
  padding: max(10px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) 10px 20px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(127, 127, 127, .2);
}

.mobile-post-toc__drawer-header h2 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.mobile-post-toc__close {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  background: transparent;
  font-size: 2rem;
  font-weight: 300;
  line-height: 1;
}

.mobile-post-toc__close:active {
  background: rgba(127, 127, 127, .14);
}

.mobile-post-toc__drawer-body {
  flex: 1;
  min-height: 0;
  padding: 10px max(14px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) 14px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: none;
}

.mobile-post-toc__list,
.mobile-post-toc__list ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.mobile-post-toc__list ol {
  margin-left: 10px;
  padding-left: 12px;
  border-left: 1px solid rgba(127, 127, 127, .2);
}

.mobile-post-toc__item {
  margin: 1px 0;
}

.mobile-post-toc__link {
  display: flex;
  min-height: 44px;
  padding: 8px 10px;
  align-items: center;
  border-radius: 8px;
  color: var(--text-color, #333);
  font-size: .94rem;
  line-height: 1.35;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.mobile-post-toc__item--h1 > .mobile-post-toc__link,
.mobile-post-toc__item--h2 > .mobile-post-toc__link {
  font-weight: 600;
}

.mobile-post-toc__link.is-active {
  color: var(--mobile-toc-accent);
  background: rgba(127, 127, 127, .13);
  font-weight: 700;
}

body.mobile-post-toc-open {
  overflow: hidden;
}

@media (min-width: 992px) {
  .mobile-post-toc {
    display: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-post-toc *,
  .mobile-post-toc *::before,
  .mobile-post-toc *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}

@media print {
  .mobile-post-toc {
    display: none !important;
  }
}