:root {
  color-scheme: dark;
  --night: #0c1114;
  --ink: #11191c;
  --ink-raised: #172125;
  --ink-soft: #1d292d;
  --paper: #e8e4da;
  --paper-soft: #bbbdb8;
  --paper-faint: #858d8a;
  --celadon: #7fa399;
  --celadon-bright: #a9c5bc;
  --brass: #c5a56b;
  --lacquer: #9c554a;
  --danger: #db8278;
  --line: rgba(223, 226, 219, 0.12);
  --line-strong: rgba(223, 226, 219, 0.2);
  --shadow: rgba(0, 0, 0, 0.32);
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Noto Serif SC", serif;
  --sans: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "SFMono-Regular", "Roboto Mono", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--night);
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 16% -12%, rgba(81, 119, 111, 0.17), transparent 38rem),
    radial-gradient(circle at 95% 115%, rgba(124, 76, 58, 0.12), transparent 34rem),
    var(--night);
  color: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

button {
  border: 0;
}

button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--celadon-bright);
  outline-offset: 3px;
}

.shell {
  width: min(1440px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 326px;
  gap: 16px;
}

.player,
.playlist-wrap {
  min-width: 0;
  border: 1px solid var(--line);
  background: rgba(17, 25, 28, 0.92);
  box-shadow: 0 22px 70px var(--shadow);
  backdrop-filter: blur(18px);
}

.player {
  position: relative;
  min-height: calc(100vh - 48px);
  overflow: hidden;
  border-radius: 26px 8px 8px 26px;
  padding: 26px 30px 22px;
  display: grid;
  grid-template-rows: auto auto auto minmax(300px, 1fr) auto;
  gap: 18px;
}

.player::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, transparent, var(--lacquer) 28%, var(--brass) 65%, transparent);
  opacity: 0.9;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(197, 165, 107, 0.65);
  border-radius: 50%;
  color: var(--brass);
  font-family: var(--serif);
  font-size: 18px;
}

.brand-copy {
  display: grid;
  gap: 1px;
}

.brand-copy strong {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.brand-copy small {
  color: var(--paper-faint);
  font-size: 11px;
  letter-spacing: 0.25em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.timebox {
  min-width: 164px;
  min-height: 40px;
  padding: 0 14px;
  display: grid;
  grid-template-columns: 1fr 42px 1fr;
  align-items: center;
  text-align: center;
  color: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.025);
  font-family: var(--mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.timebox i {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

.menu-btn,
.playlist-close {
  display: none;
}

.now-playing {
  min-height: 128px;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 4px 16px 4px 10px;
}

.chapter-disc {
  position: relative;
  width: 108px;
  min-width: 108px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid rgba(197, 165, 107, 0.34);
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--brass) 0 3px, transparent 4px 17px, rgba(197, 165, 107, 0.22) 18px 19px, transparent 20px 32px, rgba(197, 165, 107, 0.13) 33px 34px, transparent 35px),
    #111719;
  box-shadow:
    inset 0 0 0 9px rgba(255, 255, 255, 0.018),
    0 15px 36px rgba(0, 0, 0, 0.24);
}

.chapter-disc::after {
  content: "";
  position: absolute;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(197, 165, 107, 0.55);
  background: var(--ink);
}

.chapter-disc span {
  position: relative;
  z-index: 1;
  color: var(--brass);
  font-family: var(--serif);
  font-size: 14px;
}

.chapter-copy {
  min-width: 0;
}

.now-playing p,
.hint,
.error {
  margin: 0;
}

.now-playing p {
  color: var(--celadon-bright);
  font-size: 12px;
  letter-spacing: 0.22em;
}

.now-playing p:empty::before {
  content: "当前章节";
}

.now-playing h1 {
  margin: 7px 0 0;
  color: var(--paper);
  font-family: var(--serif);
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: 0.02em;
}

.controls {
  display: grid;
  grid-template-columns: auto minmax(220px, 1fr) minmax(140px, 190px);
  align-items: center;
  gap: 20px;
  padding: 15px 18px;
  border-block: 1px solid var(--line);
}

.transport {
  display: flex;
  align-items: center;
  gap: 7px;
}

.transport button {
  width: 42px;
  min-width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: var(--paper-soft);
  font-size: 19px;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.transport button:hover {
  color: var(--paper);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-1px);
}

.transport button.primary {
  width: 54px;
  min-width: 54px;
  height: 54px;
  margin-inline: 2px;
  border-color: var(--celadon);
  background: var(--celadon);
  color: #101817;
  box-shadow: 0 10px 28px rgba(67, 103, 95, 0.27);
}

.transport button.primary:not(:has(.play-symbol)) {
  font-size: 18px;
  font-weight: 700;
}

.play-symbol {
  width: 0;
  height: 0;
  margin-left: 3px;
  border-block: 7px solid transparent;
  border-left: 11px solid currentColor;
}

.transport .speed-button {
  width: 48px;
  min-width: 48px;
  color: var(--paper-faint);
  font-family: var(--mono);
  font-size: 12px;
}

.slider-row {
  min-width: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 11px;
  color: var(--paper-faint);
  font-size: 12px;
  letter-spacing: 0.08em;
}

input[type="range"] {
  width: 100%;
  min-width: 0;
  height: 18px;
  margin: 0;
  accent-color: var(--celadon);
  cursor: pointer;
}

audio {
  display: none;
}

.lyrics-panel {
  position: relative;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scroll-behavior: smooth;
  scrollbar-color: rgba(127, 163, 153, 0.36) transparent;
  scrollbar-width: thin;
  mask-image: linear-gradient(transparent, #000 5%, #000 95%, transparent);
}

.reading-label {
  position: sticky;
  top: 0;
  z-index: 2;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(var(--ink) 55%, transparent);
  pointer-events: none;
}

.reading-label span {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--paper-faint);
  font-family: var(--serif);
  font-size: 11px;
  letter-spacing: 0.3em;
}

.reading-label span::before,
.reading-label span::after {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--line-strong);
}

.lyrics {
  width: min(760px, 100%);
  min-height: 100%;
  margin: 0 auto;
  padding: 26px 28px 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.lyric-line {
  width: 100%;
  margin: 0;
  padding: 9px 4px;
  border: 0;
  background: transparent;
  color: #aeb4b0;
  font-family: var(--serif);
  font-size: clamp(17px, 1.6vw, 20px);
  font-weight: 400;
  line-height: 2;
  text-align: justify;
  text-align-last: left;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  cursor: default;
  transition: color 180ms ease, transform 180ms ease, opacity 180ms ease;
}

button.lyric-line {
  text-align: center;
  text-align-last: center;
}

.lyric-line.timed {
  cursor: pointer;
}

.lyric-line.active {
  color: var(--paper);
  font-size: clamp(21px, 2vw, 25px);
  font-weight: 600;
  transform: scale(1.015);
}

.notices {
  min-height: 18px;
  display: grid;
}

.hint,
.error {
  grid-area: 1 / 1;
  color: var(--paper-faint);
  font-size: 11px;
}

.error {
  color: var(--danger);
}

.playlist-wrap {
  position: relative;
  min-height: calc(100vh - 48px);
  overflow: hidden;
  border-radius: 8px 26px 26px 8px;
  padding: 28px 18px 20px;
  display: flex;
  flex-direction: column;
}

.playlist-heading {
  padding: 0 8px 20px;
  border-bottom: 1px solid var(--line);
}

.playlist-heading p,
.playlist-heading h2 {
  margin: 0;
}

.playlist-heading p {
  color: var(--lacquer);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
}

.playlist-heading h2 {
  margin-top: 5px;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.playlist {
  min-height: 0;
  margin: 12px -4px 0 0;
  padding-right: 5px;
  display: grid;
  align-content: start;
  gap: 3px;
  overflow-y: auto;
  scrollbar-color: rgba(127, 163, 153, 0.36) transparent;
  scrollbar-width: thin;
}

.track {
  position: relative;
  width: 100%;
  min-height: 49px;
  padding: 0 14px 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--paper-soft);
  text-align: left;
  font-size: 14px;
  cursor: pointer;
  transition: color 150ms ease, background 150ms ease, border-color 150ms ease, transform 150ms ease;
}

.track::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 50%;
  width: 5px;
  height: 5px;
  border: 1px solid var(--paper-faint);
  border-radius: 50%;
  transform: translateY(-50%);
  opacity: 0.45;
}

.track:hover {
  color: var(--paper);
  background: rgba(255, 255, 255, 0.035);
  transform: translateX(2px);
}

.track.active {
  border-color: rgba(127, 163, 153, 0.24);
  background: rgba(127, 163, 153, 0.11);
  color: var(--paper);
}

.track.active::before {
  border-color: var(--celadon-bright);
  background: var(--celadon-bright);
  box-shadow: 0 0 0 4px rgba(127, 163, 153, 0.13);
  opacity: 1;
}

.track small {
  display: block;
  margin-top: 3px;
  color: var(--paper-faint);
}

.playlist-footnote {
  margin: auto 7px 0;
  padding-top: 18px;
  color: var(--paper-faint);
  border-top: 1px solid var(--line);
  font-size: 10px;
  line-height: 1.6;
}

.playlist-backdrop {
  display: none;
}

@media (max-width: 1040px) {
  .shell {
    grid-template-columns: minmax(0, 1fr) 280px;
  }

  .controls {
    grid-template-columns: auto minmax(160px, 1fr);
  }

  .volume-row {
    display: none;
  }
}

@media (max-width: 820px) {
  body {
    overflow: hidden;
  }

  .shell {
    height: 100dvh;
    min-height: 100dvh;
    padding: 0;
    display: block;
  }

  .player {
    width: 100%;
    height: 100dvh;
    min-height: 0;
    padding: 16px 16px max(12px, env(safe-area-inset-bottom));
    border: 0;
    border-radius: 0;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .player::before {
    width: 2px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 16px;
  }

  .brand-copy strong {
    font-size: 16px;
  }

  .brand-copy small {
    display: none;
  }

  .timebox {
    min-width: 130px;
    min-height: 36px;
    padding: 0 10px;
    grid-template-columns: 1fr 18px 1fr;
    font-size: 11px;
  }

  .menu-btn {
    width: 48px;
    height: 38px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.025);
    color: var(--paper-soft);
    cursor: pointer;
  }

  .menu-lines,
  .menu-lines::before,
  .menu-lines::after {
    width: 12px;
    height: 1px;
    display: block;
    background: currentColor;
  }

  .menu-lines {
    position: relative;
  }

  .menu-lines::before,
  .menu-lines::after {
    content: "";
    position: absolute;
    left: 0;
  }

  .menu-lines::before {
    top: -4px;
  }

  .menu-lines::after {
    top: 4px;
  }

  .menu-label {
    font-size: 11px;
  }

  .now-playing {
    min-height: 76px;
    gap: 14px;
    padding: 2px 4px;
  }

  .chapter-disc {
    width: 66px;
    min-width: 66px;
    background:
      radial-gradient(circle, var(--brass) 0 2px, transparent 3px 10px, rgba(197, 165, 107, 0.22) 11px 12px, transparent 13px 21px, rgba(197, 165, 107, 0.13) 22px 23px, transparent 24px),
      #111719;
  }

  .chapter-disc::after {
    width: 21px;
    height: 21px;
  }

  .chapter-disc span {
    font-size: 11px;
  }

  .now-playing p {
    font-size: 10px;
  }

  .now-playing h1 {
    margin-top: 4px;
    font-size: clamp(24px, 8vw, 34px);
  }

  .controls {
    padding: 10px 2px 11px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .transport {
    justify-content: center;
    gap: 5px;
  }

  .transport button {
    width: 40px;
    min-width: 40px;
    height: 40px;
  }

  .transport button.primary {
    width: 50px;
    min-width: 50px;
    height: 50px;
  }

  .transport .speed-button {
    width: 45px;
    min-width: 45px;
  }

  .slider-row {
    min-height: 26px;
    padding-inline: 9px;
  }

  .volume-row {
    display: none;
  }

  .lyrics-panel {
    flex: 1 1 auto;
    min-height: 0;
    margin-inline: -3px;
  }

  .reading-label {
    height: 27px;
  }

  .lyrics {
    min-height: 100%;
    padding: 18px 10px 34px;
    justify-content: flex-start;
  }

  .lyric-line {
    padding: 7px 2px;
    font-size: 17px;
    line-height: 1.9;
  }

  .lyric-line.active {
    font-size: 20px;
  }

  .notices {
    min-height: 14px;
  }

  .hint,
  .error {
    overflow: hidden;
    font-size: 10px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .playlist-wrap {
    position: fixed;
    inset: auto 8px 8px;
    z-index: 20;
    min-height: 0;
    max-height: min(76dvh, 620px);
    padding: 22px 16px max(18px, env(safe-area-inset-bottom));
    display: flex;
    border-radius: 24px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(calc(100% + 20px));
    transition: transform 220ms ease, opacity 180ms ease, visibility 220ms;
  }

  .playlist-wrap.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .playlist-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .playlist-close {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    color: var(--paper-soft);
    font-size: 25px;
    cursor: pointer;
  }

  .playlist {
    max-height: 50dvh;
  }

  .track {
    min-height: 48px;
  }

  .playlist-footnote {
    display: none;
  }

  .playlist-backdrop {
    position: fixed;
    inset: 0;
    z-index: 19;
    display: block;
    background: rgba(3, 7, 8, 0.66);
    opacity: 0;
    visibility: hidden;
    backdrop-filter: blur(4px);
    transition: opacity 180ms ease, visibility 180ms;
  }

  .playlist-backdrop.open {
    opacity: 1;
    visibility: visible;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}