* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  color: #1f2d28;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background: #202536;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.app {
  position: relative;
  display: grid;
  grid-template-rows: 46px minmax(0, 1fr) 46px;
  width: 100vw;
  height: 100dvh;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(250, 248, 240, .18), rgba(234, 240, 230, .26)),
    url("./assets/images/xinhui-reader-bg-light-20260615.png") center / cover no-repeat;
}

.app::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 43%, rgba(255, 255, 255, .5), transparent 34%),
    linear-gradient(90deg, rgba(255, 255, 255, .26), transparent 24%, transparent 76%, rgba(255, 255, 255, .22)),
    rgba(248, 246, 236, .12);
  backdrop-filter: blur(1px);
  pointer-events: none;
}

.reader-full-btn {
  position: fixed;
  right: max(14px, env(safe-area-inset-right));
  top: max(58px, calc(env(safe-area-inset-top) + 58px));
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 92px;
  height: 34px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, .44);
  border-radius: 999px;
  color: #fff;
  background: rgba(0, 124, 91, .86);
  box-shadow: 0 10px 24px rgba(0, 0, 0, .24);
  font-size: 13px;
  font-weight: 700;
}

.reader-full-btn:hover {
  background: rgba(0, 150, 106, .94);
}

.topbar,
.toolbar {
  position: relative;
  z-index: 8;
  height: 46px;
  background: rgba(22, 26, 39, .86);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .06) inset;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.brand strong {
  overflow: hidden;
  max-width: 62vw;
  font-size: 15px;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.brand span {
  color: rgba(238, 242, 238, .62);
  font-size: 12px;
}

.stage {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  min-height: 0;
  padding: 4px 32px;
  overflow: hidden;
  perspective: 2200px;
}

.book {
  --page-h: min(calc(100dvh - 100px), calc((100vw - 96px) / 1.460526));
  --page-w: calc(var(--page-h) * .730263);
  position: relative;
  width: calc(var(--page-w) + var(--page-w));
  height: var(--page-h);
  overflow: hidden;
  clip-path: inset(0 round 3px);
  transform-style: preserve-3d;
  filter: drop-shadow(0 28px 32px rgba(0, 0, 0, .35));
  transition: width .42s cubic-bezier(.2, .72, .2, 1);
}

.book::after {
  content: "";
  position: absolute;
  inset: -18px -18px -22px;
  z-index: -1;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, .42), transparent 68%);
}

.book.is-single {
  width: var(--page-w);
}

.book.is-closed {
  width: var(--page-w);
}

.book.engine-book.is-closed,
.book.engine-book.is-single {
  width: var(--page-w) !important;
}

.book.engine-book:not(.is-closed):not(.is-single) {
  width: calc(var(--page-w) + var(--page-w)) !important;
}

.book-core {
  position: absolute;
  top: 0;
  left: 0;
  width: calc(var(--page-w) + var(--page-w));
  height: var(--page-h);
  transform: translateX(0);
  transform-style: preserve-3d;
  transition: transform .42s cubic-bezier(.2, .72, .2, 1);
}

.book.is-front .book-core {
  transform: translateX(calc(var(--page-w) * -1));
}

.book.is-back .book-core {
  transform: translateX(0);
}

.book:not(.is-closed) .book-core {
  transform: translateX(0);
}

.book-core canvas {
  background: transparent;
}

.mobile-hires-page {
  position: absolute;
  inset: 0;
  z-index: 12;
  display: none;
  width: var(--page-w);
  height: var(--page-h);
  overflow: hidden;
  pointer-events: none;
  background: #f5f0e4;
  border: 1px solid rgba(24, 32, 27, .24);
  border-radius: 3px;
  box-shadow:
    0 20px 34px rgba(0, 0, 0, .28),
    0 0 0 1px rgba(255, 255, 255, .38) inset;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.mobile-hires-page::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, .08), transparent 5%, transparent 94%, rgba(0, 0, 0, .12)),
    linear-gradient(180deg, rgba(255, 255, 255, .2), transparent 18%, rgba(0, 0, 0, .08));
}

.mobile-hires-page img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: auto;
  -webkit-font-smoothing: antialiased;
  user-select: none;
  -webkit-user-drag: none;
}

.mobile-hires-page.is-hidden {
  opacity: 0;
}

.mobile-flip-layer {
  position: absolute;
  inset: 0;
  z-index: 32;
  display: none;
  width: var(--page-w);
  height: var(--page-h);
  pointer-events: none;
  perspective: 1500px;
  transform-style: preserve-3d;
}

.mobile-flip-layer.is-active {
  display: block;
}

.mobile-flip-sheet {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: 3px;
  box-shadow:
    0 16px 28px rgba(0, 0, 0, .26),
    0 0 0 1px rgba(255, 255, 255, .34) inset;
  transform-style: preserve-3d;
  will-change: transform, filter;
}

.mobile-flip-face {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #f5f0e4;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  user-select: none;
  -webkit-user-drag: none;
}

.mobile-flip-back {
  transform: rotateY(180deg);
}

.mobile-flip-layer.flipping-next .mobile-flip-sheet {
  transform-origin: left center;
  animation: mobileFlipNext .72s cubic-bezier(.2, .74, .18, 1) forwards;
}

.mobile-flip-layer.flipping-prev .mobile-flip-sheet {
  transform-origin: right center;
  animation: mobileFlipPrev .72s cubic-bezier(.2, .74, .18, 1) forwards;
}

.mobile-page-zone {
  position: absolute;
  top: 0;
  z-index: 24;
  display: none;
  width: 50%;
  height: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  outline: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.mobile-page-prev {
  left: 0;
}

.mobile-page-next {
  right: 0;
}

.shell-mask {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 20;
  display: none;
  width: var(--page-w);
  height: var(--page-h);
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(249, 246, 236, .96), rgba(238, 241, 230, .96)),
    radial-gradient(circle at 70% 84%, rgba(119, 151, 139, .18), transparent 34%);
  border: 1px solid rgba(2, 10, 14, .24);
  border-radius: 3px 0 0 3px;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, .2) inset,
    inset -16px 0 24px rgba(44, 54, 43, .08);
}

.book.mask-left .shell-mask {
  display: block;
  left: 0;
}

.book.mask-right .shell-mask {
  display: block;
  right: 0;
  left: auto;
  border-radius: 0 3px 3px 0;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, .2) inset,
    inset 16px 0 24px rgba(44, 54, 43, .08);
}

.paper {
  position: absolute;
  top: 0;
  width: var(--page-w);
  height: var(--page-h);
  overflow: hidden;
  background: #f4efdf;
  border: 1px solid rgba(2, 10, 14, .36);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, .16) inset,
    0 8px 18px rgba(0, 0, 0, .16);
  transform-style: preserve-3d;
  backface-visibility: hidden;
  will-change: transform;
}

.paper img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #f4efdf;
  user-select: none;
  -webkit-user-drag: none;
}

.left-paper {
  left: 0;
  border-radius: 3px 0 0 3px;
}

.right-paper {
  right: 0;
  border-radius: 0 3px 3px 0;
}

.left-paper::after,
.right-paper::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.left-paper::after {
  background: linear-gradient(90deg, transparent 85%, rgba(0, 0, 0, .17));
}

.right-paper::after {
  background: linear-gradient(90deg, rgba(0, 0, 0, .17), transparent 15%);
}

.book.is-cover .left-paper,
.book.is-back .right-paper {
  display: none;
}

.book.is-cover .right-paper,
.book.is-back .left-paper {
  left: 0;
  right: auto;
  border-radius: 3px;
}

.book:not(.is-cover):not(.is-back) .right-paper:hover::before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 74px;
  height: 74px;
  background: linear-gradient(135deg, transparent 49%, rgba(255, 255, 255, .72) 50%, rgba(0, 0, 0, .18) 100%);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.flip-paper {
  z-index: 5;
  display: none;
  pointer-events: none;
  overflow: visible;
  transform-style: preserve-3d;
  will-change: transform;
}

.book.dragging-next .flip-paper,
.book.dragging-prev .flip-paper {
  display: block;
  transition: none;
}

.book.dragging-next .flip-paper {
  right: 0;
  transform-origin: left center;
}

.book.dragging-prev .flip-paper {
  left: 0;
  transform-origin: right center;
}

.flip-face {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #f4efdf;
  border: 1px solid rgba(2, 10, 14, .36);
  backface-visibility: hidden;
  transform-style: preserve-3d;
}

.flip-front {
  transform: rotateY(0deg);
}

.flip-back {
  transform: rotateY(180deg);
}

.flip-face::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.book.flipping-next .flip-front::after {
  background: linear-gradient(90deg, rgba(0, 0, 0, .2), transparent 28%, rgba(255, 255, 255, .16));
}

.book.flipping-next .flip-back::after {
  background: linear-gradient(90deg, rgba(255, 255, 255, .22), transparent 28%, rgba(0, 0, 0, .28));
}

.book.flipping-prev .flip-front::after {
  background: linear-gradient(90deg, rgba(255, 255, 255, .16), transparent 72%, rgba(0, 0, 0, .2));
}

.book.flipping-prev .flip-back::after {
  background: linear-gradient(90deg, rgba(0, 0, 0, .28), transparent 72%, rgba(255, 255, 255, .22));
}

.book.flipping-next .flip-paper,
.book.flipping-prev .flip-paper {
  display: block;
}

.book.flipping-next .flip-paper {
  right: 0;
  transform-origin: left center;
  animation: flipNext 1.15s cubic-bezier(.18, .74, .18, 1) forwards;
}

.book.flipping-prev .flip-paper {
  left: 0;
  transform-origin: right center;
  animation: flipPrev 1.15s cubic-bezier(.18, .74, .18, 1) forwards;
}

.book.is-single.flipping-next .flip-paper,
.book.is-single.flipping-prev .flip-paper {
  left: 0;
  right: auto;
}

.book.is-single.flipping-next .flip-paper {
  transform-origin: left center;
}

.book.is-single.flipping-prev .flip-paper {
  transform-origin: right center;
}

.edge-btn {
  position: absolute;
  top: 50%;
  z-index: 6;
  display: grid;
  place-items: center;
  width: 63px;
  height: 160px;
  border: 0;
  color: rgba(255, 255, 255, .74);
  font-size: 64px;
  line-height: 1;
  background: linear-gradient(90deg, rgba(0, 0, 0, .18), rgba(255, 255, 255, .05));
  transform: translateY(-50%);
}

.edge-prev {
  left: 0;
}

.edge-next {
  right: 0;
}

.edge-btn:disabled,
.tool-btn:disabled {
  opacity: .35;
  cursor: default;
}

.toolbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
}

.tool-group,
.page-tools,
.zoom-actions {
  display: flex;
  align-items: center;
}

.tool-left {
  justify-content: flex-start;
}

.tool-right {
  justify-content: flex-end;
}

.tool-btn {
  display: grid;
  place-items: center;
  width: 42px;
  height: 46px;
  border: 0;
  color: rgba(238, 242, 238, .72);
  font-size: 20px;
  line-height: 1;
  background: transparent;
}

.tool-btn:hover,
.tool-btn.is-on {
  color: #fff;
  background: rgba(255, 255, 255, .08);
}

.hidden-tool {
  display: none;
}

.page-input {
  width: 62px;
  height: 28px;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 2px;
  color: #eef2ee;
  text-align: center;
  background: rgba(255, 255, 255, .1);
  outline: none;
}

.mobile-more {
  display: none;
}

.thumb-panel,
.zoom-viewer,
.more-panel,
.audio-gate {
  position: fixed;
  z-index: 30;
}

.thumb-panel {
  top: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-rows: 48px 1fr;
  width: min(420px, 92vw);
  color: #eef2ee;
  background: rgba(28, 33, 48, .96);
  box-shadow: -20px 0 40px rgba(0, 0, 0, .28);
  transform: translateX(100%);
  transition: transform .22s ease;
}

.thumb-panel.open {
  transform: translateX(0);
}

.panel-head,
.zoom-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px 0 16px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.thumb-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  min-height: 0;
  padding: 14px;
  overflow: auto;
}

.thumb-card {
  display: grid;
  gap: 6px;
  padding: 0;
  border: 0;
  color: rgba(238, 242, 238, .82);
  text-align: center;
  background: transparent;
}

.thumb-card img {
  width: 100%;
  aspect-ratio: .706;
  object-fit: contain;
  background: #f4efdf;
  border: 1px solid rgba(255, 255, 255, .12);
}

.thumb-card span {
  font-size: 12px;
}

.zoom-viewer {
  inset: 0;
  display: none;
  grid-template-rows: 50px 1fr;
  background: #111722;
}

.zoom-viewer.open {
  display: grid;
}

.zoom-scroller {
  min-height: 0;
  padding: 18px;
  overflow: auto;
  text-align: center;
  -webkit-overflow-scrolling: touch;
}

.zoom-scroller img {
  display: block;
  width: min(100%, 980px);
  max-width: none;
  height: auto;
  margin: 0 auto;
  background: #f4efdf;
}

.more-panel {
  top: 46px;
  right: 8px;
  display: none;
  width: 170px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 4px;
  background: rgba(28, 33, 48, .96);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .28);
}

.more-panel.open {
  display: grid;
}

.more-item {
  height: 38px;
  border: 0;
  color: #eef2ee;
  text-align: left;
  background: transparent;
}

.more-item:hover {
  background: rgba(255, 255, 255, .08);
}

.audio-gate {
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(13, 16, 25, .56);
}

.audio-gate.hidden {
  display: none;
}

.sound-card {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: center;
  min-width: 310px;
  padding: 18px;
  color: #eef2ee;
}

.sound-choice {
  display: grid;
  place-items: center;
  width: 140px;
  height: 132px;
  border: 0;
  color: #eef2ee;
  background: rgba(35, 41, 58, .92);
}

.sound-choice span {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  color: #1f2937;
  font-size: 30px;
  background: #edf3e9;
}

.sound-choice strong {
  font-size: 15px;
}

.sound-skip {
  flex-basis: 100%;
  height: 28px;
  border: 0;
  color: rgba(238, 242, 238, .7);
  background: transparent;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 64px;
  z-index: 50;
  padding: 9px 14px;
  border-radius: 4px;
  color: #fff;
  font-size: 13px;
  background: rgba(22, 26, 39, .92);
  opacity: 0;
  transform: translate(-50%, 8px);
  transition: opacity .18s ease, transform .18s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@keyframes flipNext {
  0% {
    transform: rotateY(0deg);
    filter: brightness(1);
  }
  45% {
    transform: rotateY(-48deg) translateX(-1.2%) skewY(-.35deg);
    filter: brightness(.9);
  }
  68% {
    transform: rotateY(-118deg) translateX(-2.2%) skewY(.28deg);
    filter: brightness(.74);
  }
  100% {
    transform: rotateY(-178deg);
    filter: brightness(.86);
  }
}

@keyframes flipPrev {
  0% {
    transform: rotateY(0deg);
    filter: brightness(1);
  }
  45% {
    transform: rotateY(48deg) translateX(1.2%) skewY(.35deg);
    filter: brightness(.9);
  }
  68% {
    transform: rotateY(118deg) translateX(2.2%) skewY(-.28deg);
    filter: brightness(.74);
  }
  100% {
    transform: rotateY(178deg);
    filter: brightness(.86);
  }
}

@keyframes mobileFlipNext {
  0% {
    transform: rotateY(0deg);
    filter: brightness(1);
  }
  45% {
    transform: rotateY(-58deg) translateX(-1.5%);
    filter: brightness(.88);
  }
  72% {
    transform: rotateY(-132deg) translateX(-2.5%);
    filter: brightness(.76);
  }
  100% {
    transform: rotateY(-178deg);
    filter: brightness(.88);
  }
}

@keyframes mobileFlipPrev {
  0% {
    transform: rotateY(0deg);
    filter: brightness(1);
  }
  45% {
    transform: rotateY(58deg) translateX(1.5%);
    filter: brightness(.88);
  }
  72% {
    transform: rotateY(132deg) translateX(2.5%);
    filter: brightness(.76);
  }
  100% {
    transform: rotateY(178deg);
    filter: brightness(.88);
  }
}

@media (max-width: 900px) {
  .app {
    grid-template-rows: minmax(0, 1fr);
  }

  .topbar {
    display: none;
  }

  .brand strong {
    max-width: 260px;
    font-size: 13px;
  }

  .brand span {
    display: none;
  }

  .mobile-more {
    display: none;
  }

  .stage {
    align-items: center;
    padding: 6px 0 44px;
  }

.book,
.book.is-single,
.book.is-cover,
.book.is-back {
    --page-ratio: .707269;
    --page-h: min(calc(100dvh - 50px), calc((100vw - 2px) / var(--page-ratio)));
    --page-w: calc(var(--page-h) * var(--page-ratio));
    width: var(--page-w);
    height: var(--page-h);
    overflow: visible;
    filter: drop-shadow(0 18px 24px rgba(0, 0, 0, .3));
  }

  .book-core {
    width: var(--page-w);
    height: var(--page-h);
    z-index: 10;
    opacity: 1;
    visibility: visible;
  }

  .mobile-hires-page {
    display: block;
    z-index: 30;
    overflow: hidden;
  }

  .mobile-flip-layer {
    display: none;
  }

  .mobile-flip-layer.is-active {
    display: block;
  }

  .mobile-page-zone {
    display: block;
    z-index: 31;
  }

  .shell-mask {
    display: none !important;
  }

  .book.is-front .book-core,
  .book.is-back .book-core,
  .book:not(.is-closed) .book-core {
    transform: translateX(0);
  }

  .left-paper,
  .right-paper {
    left: 0;
    right: auto;
    width: var(--page-w);
    border-radius: 3px;
  }

  .left-paper {
    display: none;
  }

  .book:not(.is-cover):not(.is-back) .left-paper {
    display: none;
  }

  .edge-btn {
    display: none;
  }

  .toolbar {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 22;
    height: 34px;
    grid-template-columns: 1fr;
    padding-bottom: env(safe-area-inset-bottom);
    background: rgba(22, 26, 39, .72);
    backdrop-filter: blur(8px);
  }

  .tool-left,
  .tool-right {
    display: none;
  }

  .tool-left {
    z-index: 24;
    display: flex;
  }

  .tool-left #thumbBtn,
  .tool-left #autoBtn {
    display: none;
  }

  .tool-left #zoomBtn {
    position: fixed;
    top: 8px;
    right: 8px;
    z-index: 24;
    width: 40px;
    height: 40px;
    border-radius: 20px;
    color: #fff;
    background: rgba(22, 26, 39, .72);
    backdrop-filter: blur(8px);
  }

  #zoomBtn {
    position: fixed;
    top: 8px;
    right: 8px;
    z-index: 24;
    width: 40px;
    height: 40px;
    border-radius: 20px;
    color: #fff;
    background: rgba(22, 26, 39, .72);
    backdrop-filter: blur(8px);
  }

  #musicBtn {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 24;
    display: grid !important;
    width: 40px;
    height: 40px;
    border-radius: 20px;
    color: #fff;
    background: rgba(22, 26, 39, .72);
    backdrop-filter: blur(8px);
  }

  .page-tools {
    justify-content: center;
    height: 34px;
  }

  .page-tools .tool-btn {
    width: 43px;
    height: 34px;
    font-size: 17px;
  }

  .page-input {
    width: 56px;
    height: 27px;
  }

  .thumb-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }

  .zoom-scroller {
    padding: 0 0 54px;
  }

  .zoom-scroller img {
    width: min(168vw, 980px);
    margin: 0 auto;
  }

  .sound-card {
    gap: 10px;
    padding: 12px;
  }

  .sound-choice {
    width: 136px;
    height: 124px;
  }
}

@media (max-width: 430px) {
  .brand strong {
    max-width: 245px;
  }

  .page-tools .tool-btn {
    width: 37px;
  }

  .page-input {
    width: 54px;
  }
}