/* A quiet reading surface: content stays solid; only navigation floats. */
.reader {
  --ink: #1d1d1f;
  --muted: #707070;
  --reader-material: rgba(250, 250, 252, .50);
  --reader-material-edge: rgba(214, 214, 214, .78);
  --reader-track: #d6d6d6;
  --reader-track-active: #86868b;
  box-shadow: none;
}
.reader.theme-white,
.reader.theme-green { --ink: #1d1d1f; --muted: #707070; }
.reader.theme-night {
  --ink: #f5f5f7;
  --muted: #b8b8bd;
  --reader-material: rgba(38, 38, 40, .62);
  --reader-material-edge: rgba(255, 255, 255, .18);
  --reader-track: #555558;
  --reader-track-active: #b8b8bd;
}
.reader-brightness-overlay { top: 0; }

/* The header overlays the scrolling page so the material actually blurs content. */
.reader-header {
  position: absolute;
  z-index: 3;
  top: 0;
  left: 0;
  right: 0;
  height: calc(62px + env(safe-area-inset-top));
  padding: calc(8px + env(safe-area-inset-top)) 16px 8px;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 44px;
  align-items: center;
  gap: 8px;
  border: 0;
  background: transparent;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.reader-content {
  position: relative;
  padding-top: calc(94px + env(safe-area-inset-top));
  /* Enough trailing room to bring a short final chapter into view. */
  padding-bottom: calc(75vh + env(safe-area-inset-bottom));
}
.reader-scroll { overflow-anchor: none; }
.reader-chapter { display: flow-root; padding-bottom: 1.35em; }
.reader-chapter + .reader-chapter { padding-top: 1.25em; }
.reader-chapter.is-loading { min-height: 55vh; }

/* 中文正文使用设备自带字体；只校正断行与节奏，不覆盖读者选择的字号、字距、行距或字体。 */
.reader .reader-content {
  line-break: strict;
  word-break: normal;
  overflow-wrap: break-word;
  font-kerning: normal;
  hanging-punctuation: first last;
  text-align: start;
}
.reader .reader-content h1 {
  margin: 0 0 1.55em;
  font-size: 1.36em;
  line-height: 1.42;
  font-weight: 650;
  text-wrap: balance;
}
.reader .reader-content p { margin-bottom: 1.05em; }
@media (max-width: 600px) {
  .reader .reader-content { padding-inline: clamp(18px, 5.2vw, 26px); }
}
.reader-icon {
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 0;
  cursor: pointer;
  isolation: isolate;
}
.reader-icon::before {
  content: '';
  position: absolute;
  z-index: -1;
  inset: 7px;
  border: 1px solid var(--reader-material-edge);
  border-radius: 50%;
  background: var(--reader-material);
  box-shadow: none;
  -webkit-backdrop-filter: blur(16px) saturate(115%);
  backdrop-filter: blur(16px) saturate(115%);
  transition: transform .16s ease, background-color .16s ease;
}
.reader-icon:active::before { transform: scale(.94); }
.reader-back-dot {
  display: block;
  width: 5px;
  height: 5px;
  margin: auto;
  border-radius: 50%;
  background: currentColor;
  box-shadow: none;
  pointer-events: none;
}
.reader-heading {
  min-width: 0;
  width: min(100%, 360px);
  min-height: 44px;
  margin: 0;
  padding: 5px 16px;
  justify-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--reader-material-edge);
  border-radius: 999px;
  background: var(--reader-material);
  box-shadow: none;
  -webkit-backdrop-filter: blur(18px) saturate(115%);
  backdrop-filter: blur(18px) saturate(115%);
}
.reader-heading::before { display: none; }
.reader-heading strong,
.reader-heading span { max-width: 100%; }
.reader-heading strong {
  color: var(--ink);
  font: 600 12px/1.2 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
  letter-spacing: -.01em;
}
.reader-heading span {
  color: var(--muted);
  font: 400 10px/1.2 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
}

.reader-footer {
  z-index: 3;
  left: 12px;
  right: 12px;
  bottom: calc(12px + env(safe-area-inset-bottom));
  padding: 5px 10px 6px;
  overflow: hidden;
  border: 1px solid var(--reader-material-edge);
  border-radius: 999px;
  background: var(--reader-material);
  box-shadow: none;
  -webkit-backdrop-filter: blur(20px) saturate(115%);
  backdrop-filter: blur(20px) saturate(115%);
  transition: opacity .18s ease, transform .22s ease;
}
.reader.theme-night .reader-footer {
  border-color: var(--reader-material-edge);
  background: var(--reader-material);
  box-shadow: none;
}
.reader-footer::before { display: none; }
.reader-footer .progress-row {
  height: 36px;
  gap: 4px;
  color: var(--muted);
  font-size: 12px;
}
.reader-footer .progress-arrow {
  min-width: 36px;
  width: 36px;
  height: 36px;
  color: var(--ink);
  border-radius: 50%;
}
.reader-footer .progress-row input {
  height: 32px;
  margin: 0;
  accent-color: var(--reader-track-active);
}
.reader-footer .reader-actions {
  margin-top: 1px;
  border-top: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
}
.reader-footer .reader-actions button {
  min-height: 44px;
  min-width: 44px;
  border-radius: 999px;
  color: var(--muted);
}
.reader-footer .reader-actions button:active,
.reader-footer .progress-arrow:active { background: color-mix(in srgb, var(--ink) 7%, transparent); }
.reader-footer .reader-actions button:active { color: var(--ink); }

/* The collapsed tool is a small, single-layer frosted control. */
.reader-menu-orb,
.reader.theme-night .reader-menu-orb {
  right: 14px;
  bottom: calc(16px + env(safe-area-inset-bottom));
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  box-shadow: none;
  color: var(--ink);
  overflow: visible;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.reader-menu-orb::before,
.reader.theme-night .reader-menu-orb::before {
  inset: 4px;
  border: 1px solid var(--reader-material-edge);
  border-radius: 50%;
  background: var(--reader-material);
  box-shadow: none;
  -webkit-backdrop-filter: blur(18px) saturate(115%);
  backdrop-filter: blur(18px) saturate(115%);
}
.reader-menu-orb::after,
.reader.theme-night .reader-menu-orb::after { display: none; }
.orb-dots i { width: 3px; height: 3px; box-shadow: none; }
.reader-menu-orb:active { box-shadow: none; }

/* The open sheet is one calm surface; controls do not each become glass. */
.drawer-scrim { background: rgba(29, 29, 31, .20); }
.reader-drawer,
.reader.theme-night .reader-drawer {
  bottom: var(--keyboard-inset, 0px);
  max-height: min(78dvh, calc(100dvh - var(--keyboard-inset, 0px) - env(safe-area-inset-top) - 12px));
  padding: 20px 20px calc(24px + env(safe-area-inset-bottom));
  border: 1px solid var(--reader-material-edge);
  border-bottom: 0;
  border-radius: 28px 28px 0 0;
  background: rgba(250, 250, 252, .94);
  box-shadow: none;
  -webkit-backdrop-filter: blur(20px) saturate(110%);
  backdrop-filter: blur(20px) saturate(110%);
}
.reader.theme-night .reader-drawer { background: rgba(38, 38, 40, .94); }
.reader-drawer .drawer-title-row { margin-bottom: 16px; }
.reader-drawer .drawer-title {
  color: var(--ink);
  font: 600 17px/1.25 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
  letter-spacing: -.015em;
}
.reader-drawer .drawer-close {
  width: 44px;
  height: 44px;
  color: var(--muted);
  font-weight: 400;
}
.reader-drawer .setting-label {
  margin: 20px 0 9px;
  color: var(--muted);
  font: 500 12px/1.35 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
}
.reader-drawer .setting-hint,
.reader-drawer .panel-note { color: var(--muted); font-size: 12px; line-height: 1.5; }
.reader-drawer .setting-range-row {
  min-height: 48px;
  padding: 4px 10px;
  gap: 9px;
  border: 1px solid color-mix(in srgb, var(--ink) 8%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--ink) 5%, var(--chrome));
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.reader.theme-night .reader-drawer .setting-range-row { background: rgba(255, 255, 255, .07); }
.reader-drawer .setting-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 40px;
  margin: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  touch-action: none;
}
.reader-drawer .setting-range::-webkit-slider-runnable-track {
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(to right, var(--reader-track-active) 0 var(--range-progress, 0%), var(--reader-track) var(--range-progress, 0%) 100%);
  box-shadow: none;
}
.reader-drawer .setting-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 25px;
  height: 25px;
  margin-top: -10.5px;
  border: 1px solid var(--reader-material-edge);
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(29, 29, 31, .16);
}
.reader-drawer .setting-range::-moz-range-track {
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(to right, var(--reader-track-active) 0 var(--range-progress, 0%), var(--reader-track) var(--range-progress, 0%) 100%);
}
.reader-drawer .setting-range::-moz-range-thumb {
  width: 25px;
  height: 25px;
  border: 1px solid var(--reader-material-edge);
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(29, 29, 31, .16);
}
.reader.theme-night .reader-drawer .setting-range::-webkit-slider-thumb { background: #e6e6e8; box-shadow: none; }
.reader.theme-night .reader-drawer .setting-range::-moz-range-thumb { background: #e6e6e8; box-shadow: none; }
.reader-drawer .setting-range-row:focus-within { outline: 2px solid #0066cc; outline-offset: 2px; }
.reader-drawer .setting-range:focus-visible { outline: none; }
.reader-drawer .setting-value { color: var(--ink); font-size: 12px; font-weight: 600; }
.reader-drawer .layout-range-cell .setting-range-row { padding-inline: 8px; }
.reader-drawer .layout-pill,
.reader-drawer .panel-buttons button,
.reader-drawer .setting-row button,
.reader-drawer .setting-chip,
.reader-drawer .panel-secondary {
  color: var(--ink);
  border: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  background: transparent;
  box-shadow: none;
  font-weight: 500;
}
.reader-drawer .layout-pill { min-height: 48px; border-radius: 999px; }
.reader-drawer .panel-buttons button { border-radius: 999px; }
.reader-drawer .setting-chip.selected,
.reader-drawer .layout-pill.selected,
.reader-drawer .font-option.selected,
.reader-drawer .theme-swatch.selected,
.reader-drawer .texture-swatch.selected {
  color: #0066cc;
  border-color: #0066cc;
  box-shadow: none;
}
.reader.theme-night .reader-drawer .setting-chip.selected,
.reader.theme-night .reader-drawer .layout-pill.selected,
.reader.theme-night .reader-drawer .font-option.selected { color: #7db8ff; border-color: #7db8ff; }
.reader-drawer .theme-swatch,
.reader-drawer .texture-swatch { border-width: 1px; border-radius: 12px; box-shadow: none; }
.reader-drawer .toc-item.active,
.reader-drawer .note-actions button { color: #0066cc; }
.reader-drawer .setting-toggle input { accent-color: #0066cc; }
.reader-drawer .panel-primary { background: #0071e3; border-radius: 999px; font-weight: 600; }
.reader-drawer .note-editor { border-color: #86868b; background: var(--paper); }
.reader-drawer .note-quote { border-left-color: #0066cc; }

@media (max-width: 359px) {
  .reader-header { grid-template-columns: 44px minmax(0, 1fr) 44px; gap: 4px; padding-inline: 8px; }
  .reader-footer { left: 8px; right: 8px; padding-inline: 7px; }
  .reader-drawer { padding-inline: 16px; }
  .reader-drawer .layout-dual-grid { grid-template-columns: 1fr; }
}
@media (min-width: 720px) {
  .reader { border: 1px solid #d6d6d6; }
  .reader-header { padding-inline: 20px; }
}
@media (prefers-reduced-transparency: reduce) {
  .reader-icon::before,
  .reader-heading,
  .reader-footer,
  .reader-menu-orb::before,
  .reader-drawer { background: var(--chrome); -webkit-backdrop-filter: none; backdrop-filter: none; }
  .reader.theme-night .reader-icon::before,
  .reader.theme-night .reader-heading,
  .reader.theme-night .reader-footer,
  .reader.theme-night .reader-menu-orb::before,
  .reader.theme-night .reader-drawer { background: #262628; }
}
@media (prefers-contrast: more) {
  .reader-icon::before,
  .reader-heading,
  .reader-footer,
  .reader-menu-orb::before,
  .reader-drawer { border-color: var(--ink); background: var(--chrome); }
  .reader-drawer .setting-range-row { border-color: var(--ink); }
}
@media (prefers-reduced-motion: reduce) {
  .reader-icon::before,
  .reader-footer,
  .reader-menu-orb { transition: none; }
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .reader-icon::before,
  .reader-heading,
  .reader-footer,
  .reader-menu-orb::before,
  .reader-drawer { background: var(--chrome); }
  .reader.theme-night .reader-icon::before,
  .reader.theme-night .reader-heading,
  .reader.theme-night .reader-footer,
  .reader.theme-night .reader-menu-orb::before,
  .reader.theme-night .reader-drawer { background: #262628; }
}

/* A chapter list is navigation, not a settings sheet. Keep the title in view
   and let only the chapters move, including in long imported books. */
.reader-drawer[data-panel="toc"] {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
}
.reader-drawer[data-panel="toc"] .drawer-title-row {
  flex: none;
  margin-bottom: 6px;
}
.reader-drawer[data-panel="toc"] .toc-list {
  flex: 0 1 auto;
  min-height: 0;
  margin-inline: -8px;
  padding: 0 8px 4px;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--glass-muted) 45%, transparent) transparent;
}
.reader-drawer[data-panel="toc"] .toc-item {
  align-items: center;
  min-height: 52px;
  padding: 11px 12px;
  border-bottom: 1px solid color-mix(in srgb, var(--glass-ink) 9%, transparent);
  border-radius: 0;
  color: var(--glass-ink);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.45;
}
.reader-drawer[data-panel="toc"] .toc-item:last-child { border-bottom: 0; }
.reader-drawer[data-panel="toc"] .toc-item span:first-child {
  min-width: 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}
.reader-drawer[data-panel="toc"] .toc-item span:last-child {
  flex: none;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--glass-muted);
}
.reader-drawer[data-panel="toc"] .toc-item.active {
  border-radius: 12px;
  background: color-mix(in srgb, var(--glass-accent) 10%, transparent);
  color: var(--glass-accent);
  font-weight: 600;
}
.reader-drawer[data-panel="toc"] .toc-item.active span:last-child { color: var(--glass-accent); }
.reader-drawer[data-panel="toc"] .toc-item:focus-visible {
  outline: 2px solid var(--glass-accent);
  outline-offset: -2px;
  border-radius: 12px;
}

/* The note sheet has two clear actions and no large empty-state block. */
.reader-drawer[data-panel="notes"] {
  max-height: min(76dvh, calc(100dvh - var(--keyboard-inset, 0px) - env(safe-area-inset-top) - 12px));
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}
.reader-drawer[data-panel="notes"] .drawer-title-row { margin-bottom: 4px; }
.reader-drawer[data-panel="notes"] > .panel-note {
  margin: 0 0 16px;
  color: var(--glass-muted);
  font-size: 13px;
  line-height: 1.55;
}
.reader-drawer[data-panel="notes"] > .panel-primary,
.reader-drawer[data-panel="notes"] > .bookmark-panel-button {
  display: block;
  width: 100%;
  min-height: 48px;
  font-size: 14px;
  font-weight: 600;
}
.reader-drawer[data-panel="notes"] > .bookmark-panel-button { margin-top: 8px; }
.reader-drawer[data-panel="notes"] .setting-label { margin: 22px 0 6px; }
.reader-drawer[data-panel="notes"] .note-entry {
  margin: 10px 0;
  padding: 14px;
  border-color: color-mix(in srgb, var(--glass-ink) 10%, transparent);
  border-radius: 14px;
  background: rgba(255, 255, 255, .28);
}
.reader-drawer[data-panel="notes"] .note-entry p,
.reader-drawer[data-panel="notes"] .note-editor { color: var(--glass-ink); }
.reader-drawer[data-panel="notes"] .note-entry q,
.reader-drawer[data-panel="notes"] .note-meta,
.reader-drawer[data-panel="notes"] .note-quote { color: var(--glass-muted); }
.reader-drawer[data-panel="notes"] .note-editor {
  min-height: 116px;
  border-color: color-mix(in srgb, var(--glass-ink) 20%, transparent);
  background: rgba(255, 255, 255, .72);
}
.reader-drawer[data-panel="notes"] .note-editor:focus-visible {
  outline: 2px solid var(--glass-accent);
  outline-offset: 2px;
}
.reader-drawer[data-panel="notes"] .note-actions button {
  min-height: 44px;
  padding: 6px 8px;
  color: var(--glass-accent);
  font-size: 13px;
}

@media (prefers-contrast: more) {
  .reader-drawer[data-panel="toc"] .toc-item.active,
  .reader-drawer[data-panel="notes"] .note-entry {
    border: 1px solid var(--glass-ink);
    background: var(--chrome);
  }
}

/* ===== 苹果液态玻璃：底部工具栏 + 调节栏（统一材质，不随正文主题变化）===== */
.reader {
  --glass-bg: rgba(255, 255, 255, .55);
  --glass-bg-strong: rgba(250, 250, 252, .94);
  --glass-edge: rgba(255, 255, 255, .62);
  --glass-ink: #1d1d1f;
  --glass-muted: #6e6e73;
  --glass-track: #c7c7cc;
  --glass-track-active: #8e8e93;
  --glass-accent: #0071e3;
}
.reader-footer {
  background: var(--glass-bg);
  border-color: var(--glass-edge);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .82),
    inset 0 -1px 0 rgba(255, 255, 255, .28),
    0 10px 32px rgba(0, 0, 0, .18);
  -webkit-backdrop-filter: blur(30px) saturate(185%) brightness(1.08);
  backdrop-filter: blur(30px) saturate(185%) brightness(1.08);
}
.reader.theme-night .reader-footer {
  background: var(--glass-bg);
  border-color: var(--glass-edge);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.82), inset 0 -1px 0 rgba(255,255,255,.28), 0 10px 32px rgba(0,0,0,.18);
}
.reader-footer .progress-row { color: var(--glass-muted); }
.reader-footer .progress-arrow { color: var(--glass-ink); }
.reader-footer .reader-actions { border-top-color: rgba(0, 0, 0, .08); }
.reader-footer .reader-actions button { color: var(--glass-muted); }
.reader-footer .reader-actions button:active { color: var(--glass-ink); background: rgba(0,0,0,.05); }
.reader-footer .progress-row input { accent-color: var(--glass-track-active); }

.reader-drawer {
  background: var(--glass-bg-strong);
  border-color: var(--glass-edge);
  box-shadow: 0 -18px 48px rgba(0, 0, 0, .18), inset 0 1px 0 rgba(255, 255, 255, .85);
  -webkit-backdrop-filter: blur(34px) saturate(180%) brightness(1.05);
  backdrop-filter: blur(34px) saturate(180%) brightness(1.05);
}
.reader.theme-night .reader-drawer {
  background: var(--glass-bg-strong);
  border-color: var(--glass-edge);
  box-shadow: 0 -18px 48px rgba(0,0,0,.18), inset 0 1px 0 rgba(255,255,255,.85);
}
.reader-drawer .drawer-title { color: var(--glass-ink); }
.reader-drawer .drawer-close,
.reader-drawer .setting-label,
.reader-drawer .setting-hint,
.reader-drawer .panel-note,
.reader-drawer .source-note { color: var(--glass-muted); }
.reader-drawer .setting-value { color: var(--glass-ink); }
.reader-drawer .setting-range-row {
  border-color: rgba(0, 0, 0, .10);
  background: rgba(0, 0, 0, .04);
}
.reader-drawer .setting-range::-webkit-slider-runnable-track,
.reader-drawer .setting-range::-moz-range-track {
  background: linear-gradient(to right, var(--glass-track-active) 0 var(--range-progress, 0%), var(--glass-track) var(--range-progress, 0%) 100%);
}
.reader-drawer .setting-range::-webkit-slider-thumb,
.reader-drawer .setting-range::-moz-range-thumb {
  border-color: rgba(255, 255, 255, .7);
  background: #fff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, .2);
}
.reader-drawer .layout-pill,
.reader-drawer .panel-buttons button,
.reader-drawer .setting-row button,
.reader-drawer .setting-chip,
.reader-drawer .panel-secondary {
  color: var(--glass-ink);
  border-color: rgba(0, 0, 0, .12);
  background: rgba(255, 255, 255, .42);
}
.reader-drawer .layout-pill.selected,
.reader-drawer .setting-chip.selected,
.reader-drawer .font-option.selected,
.reader-drawer .theme-swatch.selected,
.reader-drawer .texture-swatch.selected {
  color: var(--glass-accent);
  border-color: var(--glass-accent);
}
.reader-drawer .panel-primary { background: #0071e3; }
.reader-drawer .note-editor { background: #fff; }


.page-mode-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 4px;
}
.reader-drawer .page-mode-row .layout-pill {
  min-width: 0;
  padding-inline: 8px;
  font-size: 12px;
  white-space: nowrap;
}
.reader[data-page-mode="horizontal"] .reader-content,
.reader[data-page-mode="simulation"] .reader-content {
  padding-bottom: calc(35vh + env(safe-area-inset-bottom));
}
.reader-page-turn-layer {
  position: absolute;
  z-index: 2;
  overflow: hidden;
  pointer-events: none;
  backface-visibility: hidden;
}
.reader-page-turn-layer .reader-content { position: absolute; top: 0; left: 0; }
.reader-page-turn-layer.is-simulation { box-shadow: 0 0 32px rgba(20, 24, 32, .28); }
.reader-page-turn-layer.is-simulation::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(25, 25, 28, .24), transparent 16%, transparent 84%, rgba(25, 25, 28, .12));
  pointer-events: none;
}
.reader-drawer[data-panel="toc"] .toc-browser {
  display: grid;
  flex: 0 1 auto;
  grid-template-columns: minmax(0, 1fr) 34px;
  gap: 8px;
  min-height: 0;
  overflow: hidden;
}
.reader-drawer[data-panel="toc"] .toc-browser .toc-list {
  min-height: 0;
  margin-inline: -8px 0;
  overflow-y: auto;
}
.toc-scrubber {
  align-self: stretch;
  justify-self: center;
  width: 30px;
  height: 100%;
  min-height: 180px;
  margin: 0;
  padding: 0;
  appearance: slider-vertical;
  -webkit-appearance: slider-vertical;
  writing-mode: vertical-lr;
  direction: rtl;
  accent-color: var(--reader-track-active);
  cursor: ns-resize;
  touch-action: none;
}
.toc-scrubber::-webkit-slider-runnable-track { width: 4px; border-radius: 999px; background: var(--reader-track); }
.toc-scrubber::-webkit-slider-thumb {
  width: 22px;
  height: 22px;
  border: 1px solid var(--reader-material-edge);
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 4px rgba(29, 29, 31, .18);
  -webkit-appearance: none;
}
.toc-scrubber:focus-visible { outline: 2px solid #0066cc; outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  .reader-page-turn-layer { display: none; }
}