/* 纸感阅读器：暖色编辑风 + DM Sans / Noto Serif SC */

:root {
  color-scheme: light;
  --reader-font-scale: 1;
  --reader-max: 38rem;
  --reader-pad-x: clamp(1.15rem, 4.5vw, 2rem);
  --reader-bg: #f0ebe2;
  --reader-bg-elevated: #f7f3eb;
  --reader-fg: #24211e;
  --reader-muted: #6f6962;
  --reader-border: rgba(36, 33, 30, 0.1);
  --reader-border-strong: rgba(36, 33, 30, 0.16);
  --reader-accent: #8b4d3c;
  --reader-accent-hover: #6d3b2e;
  --reader-progress-fill: #8b4d3c;
  --reader-progress-track: rgba(36, 33, 30, 0.08);
  --reader-font: 'DM Sans', ui-sans-serif, system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --reader-serif: 'Noto Serif SC', 'Songti SC', 'STSong', 'SimSun', serif;
  --reader-radius: 12px;
  --reader-radius-pill: 999px;
  --reader-shadow: 0 1px 0 rgba(255, 255, 255, 0.65) inset, 0 8px 32px rgba(36, 33, 30, 0.06);
  --reader-top-blur: rgba(240, 235, 226, 0.82);
  /* 粘性顶栏高度近似，用于标题 scroll-margin 与桌面侧栏对齐 */
  --reader-sticky-offset: 4.35rem;
}

[data-theme='dark'] {
  color-scheme: dark;
  --reader-bg: #161311;
  --reader-bg-elevated: #1e1b18;
  --reader-fg: #ece7df;
  --reader-muted: #9a9288;
  --reader-border: rgba(236, 231, 223, 0.1);
  --reader-border-strong: rgba(236, 231, 223, 0.16);
  --reader-accent: #d4a574;
  --reader-accent-hover: #e8bc8c;
  --reader-progress-fill: #d4a574;
  --reader-progress-track: rgba(236, 231, 223, 0.1);
  --reader-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 12px 40px rgba(0, 0, 0, 0.35);
  --reader-top-blur: rgba(22, 19, 17, 0.85);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    color-scheme: dark;
    --reader-bg: #161311;
    --reader-bg-elevated: #1e1b18;
    --reader-fg: #ece7df;
    --reader-muted: #9a9288;
    --reader-border: rgba(236, 231, 223, 0.1);
    --reader-border-strong: rgba(236, 231, 223, 0.16);
    --reader-accent: #d4a574;
    --reader-accent-hover: #e8bc8c;
    --reader-progress-fill: #d4a574;
    --reader-progress-track: rgba(236, 231, 223, 0.1);
    --reader-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 12px 40px rgba(0, 0, 0, 0.35);
    --reader-top-blur: rgba(22, 19, 17, 0.85);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-family: var(--reader-font);
  font-size: calc(100% * var(--reader-font-scale));
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--reader-fg);
  line-height: 1.75;
  background-color: var(--reader-bg);
  background-image:
    radial-gradient(ellipse 100% 50% at 50% -15%, color-mix(in srgb, var(--reader-accent) 9%, transparent), transparent 55%),
    radial-gradient(ellipse 80% 40% at 100% 50%, color-mix(in srgb, var(--reader-accent) 4%, transparent), transparent 50%);
}

/* 侧栏目录打开时禁止背后页面滚动（移动端） */
html.reader-toc-scroll-lock,
html.reader-toc-scroll-lock body {
  overflow: hidden;
  overscroll-behavior: none;
}

.reader-app[data-width='narrow'] {
  --reader-max: 26rem;
}

.reader-app[data-width='wide'] {
  --reader-max: 46rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 1000;
  padding: 0.55rem 1rem;
  background: var(--reader-accent);
  color: var(--reader-bg-elevated);
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--reader-radius);
}

.skip-link:focus {
  left: 0.75rem;
  top: 0.75rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.reader-top {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--reader-top-blur);
  backdrop-filter: saturate(1.2) blur(14px);
  -webkit-backdrop-filter: saturate(1.2) blur(14px);
  border-bottom: 1px solid var(--reader-border);
}

.reader-progress-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding-top: max(0.12rem, env(safe-area-inset-top, 0px));
  padding-bottom: 0.28rem;
  padding-left: max(var(--reader-pad-x), env(safe-area-inset-left, 0px));
  padding-right: max(var(--reader-pad-x), env(safe-area-inset-right, 0px));
  max-width: calc(var(--reader-max) + 2 * var(--reader-pad-x) + 15rem);
  margin: 0 auto;
}

.reader-progress-pct {
  flex-shrink: 0;
  font-size: 0.6875rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--reader-muted);
  min-width: 3rem;
  text-align: right;
}

.reader-progress {
  flex: 1;
  min-width: 0;
  height: 2px;
  border-radius: var(--reader-radius-pill);
  background: var(--reader-progress-track);
  overflow: hidden;
}

.reader-progress-bar {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: var(--reader-radius-pill);
  background: var(--reader-progress-fill);
  box-shadow: 0 0 12px color-mix(in srgb, var(--reader-progress-fill) 45%, transparent);
  transition: width 0.15s cubic-bezier(0.22, 1, 0.36, 1);
}

@media (prefers-reduced-motion: reduce) {
  .reader-progress-bar {
    transition: none;
  }
}

.reader-toolbar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding-top: 0.38rem;
  padding-bottom: 0.55rem;
  padding-left: max(var(--reader-pad-x), env(safe-area-inset-left, 0px));
  padding-right: max(var(--reader-pad-x), env(safe-area-inset-right, 0px));
  max-width: calc(var(--reader-max) + 2 * var(--reader-pad-x) + 15rem);
  margin: 0 auto;
}

.reader-settings-toggle {
  display: none;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  min-height: 2.35rem;
  padding: 0;
  border: 1px solid var(--reader-border-strong);
  border-radius: var(--reader-radius);
  background: var(--reader-bg-elevated);
  color: var(--reader-fg);
  font-family: var(--reader-font);
  cursor: pointer;
  box-shadow: var(--reader-shadow);
  -webkit-tap-highlight-color: color-mix(in srgb, var(--reader-accent) 22%, transparent);
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  position: relative;
  z-index: 2;
}

.reader-icon-settings {
  display: block;
  width: 1.15rem;
  height: 1.15rem;
  margin: 0 auto;
}

.reader-settings-toggle:hover {
  border-color: color-mix(in srgb, var(--reader-accent) 35%, var(--reader-border-strong));
}

.reader-toc-toggle {
  flex-shrink: 0;
  width: 2.35rem;
  height: 2.35rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--reader-border-strong);
  border-radius: var(--reader-radius);
  background: var(--reader-bg-elevated);
  color: var(--reader-fg);
  cursor: pointer;
  box-shadow: var(--reader-shadow);
  transition: border-color 0.15s ease, transform 0.12s ease;
  -webkit-tap-highlight-color: color-mix(in srgb, var(--reader-accent) 22%, transparent);
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  position: relative;
  z-index: 2;
}

.reader-toc-toggle:hover {
  border-color: color-mix(in srgb, var(--reader-accent) 35%, var(--reader-border-strong));
}

.reader-toc-toggle:active {
  transform: scale(0.97);
}

.reader-hamburger {
  width: 1rem;
  height: 1.5px;
  background: currentColor;
  border-radius: 1px;
  box-shadow:
    0 -5px 0 currentColor,
    0 5px 0 currentColor;
}

.reader-book-title {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-family: var(--reader-font);
  font-size: clamp(0.8125rem, 2.2vw, 0.9375rem);
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.reader-toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem;
  border-radius: var(--reader-radius-pill);
  background: color-mix(in srgb, var(--reader-fg) 4.5%, var(--reader-bg-elevated));
  border: 1px solid var(--reader-border);
  box-shadow: 0 1px 2px rgba(36, 33, 30, 0.04);
}

.reader-control {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0 0.35rem 0 0.5rem;
  border-radius: var(--reader-radius-pill);
}

.reader-control-label {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--reader-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.reader-toolbar-actions select {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--reader-fg);
  font-family: var(--reader-font);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.35rem 1.35rem 0.35rem 0.15rem;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236f6962' d='M3 4.5L6 7.5L9 4.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.15rem center;
}

[data-theme='dark'] .reader-toolbar-actions select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239a9288' d='M3 4.5L6 7.5L9 4.5'/%3E%3C/svg%3E");
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) .reader-toolbar-actions select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239a9288' d='M3 4.5L6 7.5L9 4.5'/%3E%3C/svg%3E");
  }
}

.reader-chip {
  border: none;
  background: transparent;
  color: var(--reader-fg);
  font-family: var(--reader-font);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.4rem 0.65rem;
  border-radius: var(--reader-radius-pill);
  cursor: pointer;
  transition: background 0.12s ease;
}

.reader-chip:hover {
  background: color-mix(in srgb, var(--reader-fg) 7%, transparent);
}

.reader-body {
  display: block;
  max-width: calc(var(--reader-max) + 2 * var(--reader-pad-x) + 15rem);
  margin: 0 auto;
  position: relative;
}

.reader-main {
  padding-top: 1.5rem;
  padding-bottom: calc(4.5rem + env(safe-area-inset-bottom, 0px));
  padding-left: max(var(--reader-pad-x), env(safe-area-inset-left, 0px));
  padding-right: max(var(--reader-pad-x), env(safe-area-inset-right, 0px));
  max-width: calc(var(--reader-max) + 2 * var(--reader-pad-x));
  margin: 0 auto;
}

.reader-article {
  font-family: var(--reader-serif);
  font-size: clamp(1.02rem, 2.6vw, 1.14rem);
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: 0.02em;
  overflow-wrap: break-word;
  text-align: justify;
  text-justify: inter-ideograph;
}

.reader-article h1,
.reader-article h2,
.reader-article h3 {
  font-family: var(--reader-serif);
  font-weight: 600;
  line-height: 1.38;
  margin: 1.85em 0 0.6em;
  scroll-margin-top: var(--reader-sticky-offset);
  text-align: start;
}

.reader-article h1 {
  font-size: 1.55em;
  letter-spacing: 0.03em;
}

.reader-article h2 {
  font-size: 1.28em;
  color: color-mix(in srgb, var(--reader-fg) 92%, var(--reader-accent));
}

.reader-article h3 {
  font-size: 1.1em;
}

.reader-article p {
  margin: 0.85em 0 1.05em;
}

.reader-article p + p {
  margin-top: 1em;
}

.reader-article h1 + p,
.reader-article h2 + p,
.reader-article h3 + p {
  margin-top: 0.35em;
}

.reader-article img {
  max-width: 100%;
  height: auto;
  border-radius: var(--reader-radius);
  margin: 1.25em 0;
  box-shadow: 0 4px 24px rgba(36, 33, 30, 0.08);
}

[data-theme='dark'] .reader-article img {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) .reader-article img {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  }
}

.reader-article pre,
.reader-article code {
  font-family: 'DM Sans', ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 0.86em;
}

.reader-article pre {
  padding: 1rem 1.1rem;
  overflow-x: auto;
  background: var(--reader-bg-elevated);
  border-radius: var(--reader-radius);
  border: 1px solid var(--reader-border);
  box-shadow: var(--reader-shadow);
  text-align: start;
}

.reader-article blockquote {
  margin: 1.15em 0;
  padding: 0.35em 0 0.35em 1.1rem;
  border-left: 3px solid var(--reader-accent);
  color: var(--reader-muted);
  font-style: italic;
  text-align: start;
}

.reader-article hr {
  border: 0;
  height: 1px;
  margin: 2.5rem 0;
  background: linear-gradient(90deg, transparent, var(--reader-border-strong), transparent);
}

.reader-article table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9em;
  margin: 1.15em 0;
  text-align: start;
}

.reader-article th,
.reader-article td {
  border: 1px solid var(--reader-border);
  padding: 0.45rem 0.6rem;
}

.reader-toc-heading {
  margin: 0 0 0.75rem;
  font-family: var(--reader-font);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--reader-muted);
}

.reader-toc-subheading {
  margin: 1rem 0 0.5rem;
  font-family: var(--reader-font);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--reader-muted);
  letter-spacing: 0.08em;
}

.reader-toc-chapters {
  list-style: none;
  margin: 0 0 0.25rem;
  padding: 0;
}

.reader-toc-chapters li {
  margin: 0.2rem 0;
}

.reader-toc-chapters a {
  display: block;
  padding: 0.4rem 0.45rem;
  border-radius: 8px;
  color: var(--reader-fg);
  text-decoration: none;
  font-family: var(--reader-font);
  font-size: 0.84rem;
  font-weight: 500;
  transition: background 0.12s ease, color 0.12s ease;
}

.reader-toc-chapters a:hover {
  background: color-mix(in srgb, var(--reader-fg) 6%, transparent);
}

.reader-toc-chapters a.is-active-chapter {
  color: var(--reader-accent);
  font-weight: 600;
  background: color-mix(in srgb, var(--reader-accent) 12%, transparent);
}

.reader-toc-inline {
  list-style: none;
  margin: 0 0 0.5rem;
  padding: 0;
}

.reader-toc-inline li {
  margin: 0.12rem 0;
}

.reader-toc-inline a {
  display: block;
  padding: 0.28rem 0.45rem;
  border-radius: 6px;
  color: var(--reader-fg);
  text-decoration: none;
  font-family: var(--reader-font);
  font-size: 0.8rem;
  font-weight: 450;
  line-height: 1.35;
  transition: background 0.12s ease;
}

.reader-toc-inline a:hover {
  background: color-mix(in srgb, var(--reader-fg) 6%, transparent);
}

.reader-toc-inline-muted {
  display: block;
  padding: 0.28rem 0.45rem;
  font-family: var(--reader-font);
  font-size: 0.78rem;
  line-height: 1.35;
  color: var(--reader-muted);
}

.reader-toc-empty {
  margin: 0;
  font-family: var(--reader-font);
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--reader-muted);
}

.reader-toc {
  position: fixed;
  top: 0;
  left: 0;
  width: min(19rem, 90vw);
  height: 100vh;
  height: 100dvh;
  background: var(--reader-bg-elevated);
  border-right: 1px solid var(--reader-border-strong);
  z-index: 100;
  overflow: auto;
  padding-top: calc(var(--reader-sticky-offset) + env(safe-area-inset-top, 0px) + 0.35rem);
  padding-right: max(1.1rem, env(safe-area-inset-right, 0px));
  padding-bottom: calc(1.75rem + env(safe-area-inset-bottom, 0px));
  padding-left: max(1.1rem, env(safe-area-inset-left, 0px));
  transform: translate3d(-100%, 0, 0);
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 8px 0 40px rgba(36, 33, 30, 0.08);
  -webkit-font-smoothing: antialiased;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

.reader-toc.is-open {
  transform: translate3d(0, 0, 0);
}

.reader-toc-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 18, 16, 0.32);
  z-index: 90;
  /* 避免 backdrop-filter 在移动端把整屏糊成一片 */
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* 部分 WebView 仅设 hidden 仍占位拦截触摸，强制不参与命中 */
.reader-toc-overlay[hidden] {
  display: none !important;
  pointer-events: none !important;
}

[data-theme='dark'] .reader-toc-overlay {
  background: rgba(0, 0, 0, 0.42);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) .reader-toc-overlay {
    background: rgba(0, 0, 0, 0.42);
  }
}

@media (max-width: 959px) {
  .reader-toc[hidden] {
    display: none !important;
    pointer-events: none !important;
  }

  /* 抽屉关闭时仍可能参与 WebKit 命中测试，禁止拦截背后顶栏按钮 */
  .reader-toc:not(.is-open) {
    pointer-events: none;
  }

  .reader-toc.is-open {
    display: block !important;
    pointer-events: auto;
  }

  .reader-top {
    isolation: isolate;
  }

  .reader-toolbar {
    position: relative;
    z-index: 1;
  }
}

@media (min-width: 960px) {
  .reader-body {
    display: grid;
    grid-template-columns: minmax(11.5rem, 13.5rem) 1fr;
    gap: 1.25rem;
    align-items: start;
  }

  .reader-toc {
    position: sticky;
    top: calc(var(--reader-sticky-offset) + 0.2rem);
    height: calc(100vh - var(--reader-sticky-offset) - 0.85rem);
    transform: none;
    width: auto;
    min-width: 0;
    overflow-x: hidden;
    overflow-y: auto;
    border-right: none;
    padding: 0 0.6rem 2rem 0;
    box-shadow: none;
    background: transparent;
    z-index: auto;
  }

  .reader-toc-inner {
    min-width: 0;
    overflow-wrap: anywhere;
  }

  .reader-toc[hidden] {
    display: block !important;
  }

  .reader-toc-toggle,
  .reader-toc-overlay {
    display: none !important;
  }

  .reader-main {
    margin: 0;
    min-width: 0;
    max-width: calc(var(--reader-max) + 2 * var(--reader-pad-x));
  }
}

.reader-toc-inner ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.reader-toc-inner li {
  margin: 0.15rem 0;
}

.reader-toc-inner .reader-toc-headings a {
  color: var(--reader-muted);
  text-decoration: none;
  font-family: var(--reader-font);
  font-size: 0.8125rem;
  font-weight: 500;
  display: block;
  padding: 0.35rem 0.45rem;
  border-radius: 8px;
  transition: color 0.12s ease, background 0.12s ease;
  overflow-wrap: anywhere;
}

.reader-toc-inner .reader-toc-headings a:hover,
.reader-toc-inner .reader-toc-headings a:focus {
  color: var(--reader-fg);
  background: color-mix(in srgb, var(--reader-fg) 6%, transparent);
}

.reader-toc-inner .reader-toc-headings a.is-active {
  color: var(--reader-accent);
  font-weight: 600;
  background: color-mix(in srgb, var(--reader-accent) 10%, transparent);
}

.reader-toc-inner .toc-h2 {
  padding-left: 0.35rem;
  font-size: 0.8rem;
}

.reader-toc-inner .toc-h3 {
  padding-left: 0.85rem;
  font-size: 0.78rem;
  opacity: 0.92;
}

.reader-toc-inner .toc-h4 {
  padding-left: 1.2rem;
  font-size: 0.74rem;
  opacity: 0.88;
}

@media (max-width: 719px) {
  :root {
    --reader-sticky-offset: 3.95rem;
  }

  /* 窄屏两端对齐易产生「大空隙」，左对齐更易读 */
  .reader-article {
    text-align: start;
    text-justify: auto;
  }

  .reader-progress {
    height: 3px;
    border-radius: 2px;
  }

  .reader-progress-pct {
    display: none !important;
  }

  .reader-settings-toggle {
    display: inline-flex;
    width: 2.75rem;
    min-height: 2.75rem;
  }

  .reader-toc-toggle {
    width: 2.75rem;
    height: 2.75rem;
  }

  .reader-toolbar {
    padding-top: 0.3rem;
    padding-bottom: 0.45rem;
    padding-left: max(var(--reader-pad-x), env(safe-area-inset-left, 0px));
    padding-right: max(var(--reader-pad-x), env(safe-area-inset-right, 0px));
    gap: 0.45rem;
  }

  .reader-toolbar-actions {
    position: absolute;
    top: calc(100% + 0.3rem);
    left: max(var(--reader-pad-x), env(safe-area-inset-left, 0px));
    right: max(var(--reader-pad-x), env(safe-area-inset-right, 0px));
    z-index: 55;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    padding: 0.65rem 0.75rem;
    border-radius: var(--reader-radius);
    background: var(--reader-bg-elevated);
    border: 1px solid var(--reader-border-strong);
    box-shadow: 0 12px 40px rgba(36, 33, 30, 0.12);
  }

  [data-theme='dark'] .reader-toolbar-actions {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  }

  .reader-app.is-settings-open .reader-toolbar-actions {
    display: flex;
  }

  /* 与下方按钮同一套「整行卡片」，避免左对齐/居中混用 */
  .reader-toolbar-actions .reader-control {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    min-height: 2.75rem;
    margin: 0;
    padding: 0.4rem 0.65rem;
    border-radius: var(--reader-radius);
    background: color-mix(in srgb, var(--reader-fg) 5%, var(--reader-bg-elevated));
    border: 1px solid var(--reader-border);
    justify-content: space-between;
    gap: 0.65rem;
  }

  .reader-toolbar-actions .reader-control-label {
    flex: 0 0 auto;
    min-width: 1.35rem;
    text-align: start;
  }

  .reader-toolbar-actions select {
    flex: 1 1 auto;
    min-width: 0;
    min-height: 2rem;
    padding: 0.35rem 1.35rem 0.35rem 0.15rem;
    text-align: end;
  }

  .reader-toolbar-actions .reader-chip {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    text-align: start;
    margin: 0;
    padding: 0.55rem 0.65rem;
    min-height: 2.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: var(--reader-radius);
    background: color-mix(in srgb, var(--reader-fg) 5%, var(--reader-bg-elevated));
    border: 1px solid var(--reader-border);
    -webkit-tap-highlight-color: color-mix(in srgb, var(--reader-accent) 22%, transparent);
  }

  .reader-toolbar-actions .reader-chip:hover,
  .reader-toolbar-actions .reader-chip:active {
    background: color-mix(in srgb, var(--reader-fg) 9%, var(--reader-bg-elevated));
  }

  .reader-toc-chapters a {
    min-height: 2.75rem;
    display: flex;
    align-items: center;
    padding: 0.35rem 0.55rem;
  }

  .reader-toc-inner .reader-toc-headings a {
    min-height: 2.5rem;
    display: flex;
    align-items: center;
    padding: 0.4rem 0.55rem;
  }

  .reader-main {
    padding-top: 1.15rem;
  }

  .reader-chapter-pill {
    min-height: 3.25rem;
    padding: 0.6rem 0.55rem;
    -webkit-tap-highlight-color: color-mix(in srgb, var(--reader-accent) 22%, transparent);
  }
}

@media (min-width: 720px) {
  .reader-settings-toggle {
    display: none !important;
  }

  .reader-toolbar-actions {
    position: static !important;
    display: flex !important;
    flex-direction: row;
    align-items: center;
    box-shadow: 0 1px 2px rgba(36, 33, 30, 0.04);
  }
}

.reader-chapter-nav--bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  justify-content: space-between;
  margin: 2.75rem 0 0;
  padding-top: 1.6rem;
  border-top: 1px solid var(--reader-border);
}

.reader-chapter-nav a,
.reader-chapter-pill {
  color: var(--reader-accent);
  text-decoration: none;
  font-family: var(--reader-font);
  font-size: 0.875rem;
  font-weight: 500;
}

.reader-chapter-pill {
  display: inline-flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  gap: 0.2rem;
  min-width: 0;
  flex: 1 1 0;
  max-width: calc(50% - 0.35rem);
  padding: 0.5rem 0.65rem;
  border-radius: var(--reader-radius-pill);
  border: 1px solid color-mix(in srgb, var(--reader-accent) 42%, var(--reader-border-strong));
  background: color-mix(in srgb, var(--reader-accent) 8%, var(--reader-bg-elevated));
  font-weight: 600;
  transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
  text-align: center;
}

.reader-chapter-pill__label {
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.2;
}

.reader-chapter-pill__name {
  font-size: 0.66rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--reader-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}

.reader-chapter-pill[aria-disabled='true'] .reader-chapter-pill__name {
  color: var(--reader-muted);
  opacity: 0.75;
}

.reader-chapter-nav a:hover,
.reader-chapter-pill:hover {
  color: var(--reader-accent-hover);
  text-decoration: none;
  background: color-mix(in srgb, var(--reader-accent) 14%, var(--reader-bg-elevated));
  border-color: color-mix(in srgb, var(--reader-accent) 55%, var(--reader-border-strong));
}

.reader-chapter-nav a[aria-disabled='true'],
.reader-chapter-pill[aria-disabled='true'] {
  color: var(--reader-muted);
  pointer-events: none;
  text-decoration: none;
  background: color-mix(in srgb, var(--reader-fg) 4%, var(--reader-bg-elevated));
  border-color: var(--reader-border);
}

@media print {
  .reader-top,
  .reader-toc,
  .reader-toc-overlay,
  .reader-chapter-nav--bottom {
    display: none !important;
  }

  .reader-main {
    max-width: none;
    padding: 0;
  }

  body {
    background: #fff;
  }
}