:root {
  color-scheme: light;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --line: #e6e6ea;
  --paper: #fbfbfd;
  --wash: #f5f5f7;
  --accent: #586b64;
  --accent-strong: #2f403b;
  --accent-soft: #eef2f0;
  --warm: #a06f3f;
  --warm-soft: #f8f1e8;
  --active: #fff8ed;
  --player: #2b302e;
  --player-dark: #101412;
  --player-light: #4b5651;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.1);
  --focus-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-ease: cubic-bezier(0.2, 0, 0, 1);
  --motion-soft: cubic-bezier(0.16, 1, 0.3, 1);
  --motion-press: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.92), transparent 32%),
    radial-gradient(circle at 18% 18%, rgba(160, 111, 63, 0.08), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(245, 245, 247, 0.96)),
    var(--wash);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

button,
select,
input {
  font: inherit;
}

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

button:focus {
  outline: none;
}

button:focus-visible {
  outline: 2px solid rgba(88, 107, 100, 0.24);
  outline-offset: 2px;
}

.app-shell {
  display: grid;
  grid-template-columns: 280px minmax(280px, 380px) minmax(0, 1fr);
  gap: 18px;
  min-height: 100vh;
  padding: 18px;
  transition: padding-bottom 420ms var(--motion-soft);
}

@keyframes playerBarIn {
  from {
    opacity: 0;
    transform: translate(-50%, 18px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0) scale(1);
  }
}

@keyframes sheetIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes glassFadeIn {
  from {
    opacity: 0;
    backdrop-filter: blur(0) saturate(1);
    -webkit-backdrop-filter: blur(0) saturate(1);
  }
  to {
    opacity: 1;
    backdrop-filter: blur(8px) saturate(1.08);
    -webkit-backdrop-filter: blur(8px) saturate(1.08);
  }
}

.library,
.player-panel,
.lesson {
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.library {
  border-radius: 18px;
  padding: 16px;
  overflow: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.28), transparent 42%),
    linear-gradient(135deg, var(--accent-strong), #7f8d88);
  color: #fff;
  font-weight: 800;
}

.brand h1,
.lesson h2,
.now h2 {
  margin: 0;
  letter-spacing: 0;
}

.brand h1 {
  font-size: 17px;
}

.brand p,
.eyebrow {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.control-block {
  margin: 18px 0;
}

.control-block label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 11px;
  background: #fff;
  color: var(--ink);
}

.segmented,
.mode-grid {
  display: grid;
  gap: 6px;
}

.segmented {
  grid-template-columns: 1fr 1fr;
}

.mode-grid {
  grid-template-columns: repeat(3, 1fr);
}

.segmented button,
.mode-grid button,
.unit-list button,
.part-tabs button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  transition:
    transform 220ms var(--motion-press),
    background 260ms var(--motion-ease),
    border-color 260ms var(--motion-ease),
    color 260ms var(--motion-ease),
    box-shadow 260ms var(--motion-ease);
}

.segmented button,
.mode-grid button {
  min-height: 36px;
  border-radius: 10px;
}

.segmented button.active,
.mode-grid button.active,
.unit-list button.active,
.part-tabs button.active {
  border-color: rgba(88, 107, 100, 0.28);
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 800;
}

.segmented button:hover,
.mode-grid button:hover,
.unit-list button:hover,
.part-tabs button:hover {
  transform: translateY(-1px);
}

.segmented button:active,
.mode-grid button:active,
.unit-list button:active,
.part-tabs button:active {
  transform: translateY(0) scale(0.985);
}

.unit-list {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

.unit-list button {
  width: 100%;
  min-height: 54px;
  border-radius: 12px;
  padding: 9px 10px;
  text-align: left;
}

.unit-title {
  display: block;
  color: var(--ink);
  font-weight: 800;
  line-height: 1.25;
}

.unit-meta {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.player-panel {
  display: none;
}

.player-controller {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.mobile-player-topbar,
.lyric-stream,
.mode-cycle,
.list-button {
  display: none;
}

.focus-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 22px;
  padding: 18px;
  aspect-ratio: 1 / 1;
  background:
    linear-gradient(rgba(24, 24, 27, 0.42), rgba(24, 24, 27, 0.42)),
    var(--cover-url),
    linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.08));
  background-size: cover;
  background-position: center;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22), 0 18px 44px rgba(0, 0, 0, 0.14);
}

.focus-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.focus-topline,
.focus-text,
.focus-subtext {
  position: relative;
  z-index: 1;
}

.focus-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: rgba(255, 248, 236, 0.78);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.focus-text {
  margin: auto 0 12px;
  color: #fffaf1;
  font-size: clamp(24px, 4.6vw, 38px);
  line-height: 1.12;
  font-weight: 850;
  letter-spacing: 0;
  text-wrap: balance;
}

.focus-subtext {
  margin: 0;
  color: rgba(255, 248, 236, 0.78);
  font-size: 14px;
  line-height: 1.55;
}

.now {
  margin: 22px 0 20px;
}

.now h2 {
  color: #fffaf1;
  font-size: 34px;
  line-height: 1.2;
  font-weight: 760;
}

.now p:last-child {
  color: rgba(255, 248, 236, 0.68);
  font-size: 14px;
  line-height: 1.55;
}

.player-panel .eyebrow {
  color: rgba(255, 248, 236, 0.62);
}

.transport {
  display: grid;
  grid-template-columns: 64px 1fr 64px;
  gap: 14px;
  align-items: center;
  margin-top: 22px;
}

.icon-button,
.play-button {
  border: 0;
  color: #fff;
  transition:
    transform 220ms var(--motion-press),
    box-shadow 280ms var(--motion-ease),
    background 280ms var(--motion-ease);
}

.icon-button {
  height: 58px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-size: 34px;
}

.mode-cycle,
.list-button {
  font-size: 16px;
  font-weight: 850;
}

.play-button {
  height: 68px;
  border-radius: 999px;
  background: #fffaf1;
  color: var(--player-dark);
  font-size: 18px;
  font-weight: 850;
  box-shadow: 0 16px 34px rgba(55, 28, 13, 0.24);
}

.icon-button:hover,
.play-button:hover {
  transform: translateY(-1px);
}

.icon-button:active,
.play-button:active {
  transform: translateY(0) scale(0.96);
}

.time-row {
  display: grid;
  grid-template-columns: 48px 1fr 48px;
  gap: 10px;
  align-items: center;
  margin-top: 18px;
  color: rgba(255, 248, 236, 0.7);
  font-size: 15px;
}

input[type="range"] {
  accent-color: #fffaf1;
  width: 100%;
}

.lesson {
  min-width: 0;
  border-radius: 18px;
  padding: 18px;
  overflow: hidden;
}

.lesson-head {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.lesson-head h2 {
  font-size: 24px;
  line-height: 1.2;
}

.part-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.lesson-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.lesson-list-button {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  min-height: 34px;
  padding: 0 13px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--accent-strong);
  font-weight: 820;
  transition:
    transform 220ms var(--motion-press),
    background 260ms var(--motion-ease),
    border-color 260ms var(--motion-ease),
    box-shadow 260ms var(--motion-ease);
}

.part-tabs button {
  display: grid;
  place-items: center;
  min-height: 34px;
  border-radius: 10px;
  padding: 0 12px;
  line-height: 1;
  white-space: nowrap;
}

.lesson-body {
  height: calc(100vh - 116px);
  overflow: auto;
  padding: 4px 4px 24px 0;
}

.part-section {
  padding-top: 18px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 18px 0 10px;
}

.section-title h3 {
  margin: 0;
  font-size: 16px;
}

.pill {
  border-radius: 999px;
  padding: 3px 8px;
  background: #f0eeeb;
  color: #6f6258;
  font-size: 12px;
  font-weight: 800;
}

.dialogue-list,
.word-grid,
.phrase-grid {
  display: grid;
  gap: 8px;
}

.word-grid,
.phrase-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.item {
  cursor: pointer;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 11px 12px;
  background: rgba(255, 255, 255, 0.82);
  opacity: 1;
  filter: blur(0);
  transition:
    opacity 420ms var(--focus-ease),
    filter 420ms var(--focus-ease),
    background 360ms var(--focus-ease),
    border-color 360ms var(--focus-ease),
    transform 360ms var(--focus-ease),
    box-shadow 360ms var(--focus-ease);
  will-change: opacity, filter;
}

.item.active {
  border-color: rgba(160, 111, 63, 0.34);
  background: var(--active);
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(82, 61, 42, 0.12);
}

.item:focus-visible {
  outline: 3px solid rgba(160, 111, 63, 0.28);
  outline-offset: 2px;
}

.item:hover {
  border-color: rgba(88, 107, 100, 0.26);
  transform: translateY(-1px);
}

.speaker {
  margin: 0 0 3px;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 850;
}

.english {
  margin: 0;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
  font-weight: 780;
  transition: color 360ms var(--focus-ease), text-shadow 360ms var(--focus-ease);
}

.chinese,
.note,
.meaning,
.example {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.note {
  color: #716557;
}

.term {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
}

.term strong {
  font-size: 16px;
  font-weight: 780;
  transition: color 360ms var(--focus-ease), text-shadow 360ms var(--focus-ease);
}

.perf-overlay {
  position: fixed;
  left: 8px;
  top: 8px;
  z-index: 9999;
  max-width: 190px;
  border: 1px solid rgba(16, 24, 22, 0.14);
  border-radius: 10px;
  padding: 8px 9px;
  background: rgba(255, 255, 255, 0.82);
  color: #121a17;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(16px) saturate(1.1);
  -webkit-backdrop-filter: blur(16px) saturate(1.1);
  font: 11px/1.35 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
  pointer-events: none;
}

.phonetic {
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 1100px) {
  .app-shell {
    grid-template-columns: 250px minmax(0, 1fr);
  }

  .lesson {
    grid-column: 1 / -1;
  }

  .lesson-body {
    height: auto;
    max-height: none;
  }
}

@media (max-width: 720px) {
  .app-shell {
    display: block;
    min-height: 100vh;
    padding: 10px 10px 18px;
  }

  .library,
  .player-panel,
  .focus-card,
  .mobile-player-topbar,
  .lyric-stream {
    display: none;
  }

  .lesson {
    margin: 0;
    border-radius: 18px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 14px 42px rgba(0, 0, 0, 0.08);
  }

  .lesson-head {
    display: block;
  }

  .lesson-actions {
    display: grid;
    grid-template-columns: 62px minmax(0, 1fr);
    align-items: stretch;
    justify-content: stretch;
    margin-top: 12px;
  }

  .lesson-list-button {
    display: grid;
    place-items: center;
    min-height: 40px;
    padding: 0;
    border-radius: 12px;
  }

  .part-tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
    justify-content: stretch;
    margin-top: 0;
  }

  .part-tabs button {
    min-height: 40px;
    padding: 0 8px;
    border-radius: 12px;
  }

  .word-grid,
  .phrase-grid {
    grid-template-columns: 1fr;
  }

  body.focus-mode .item {
    opacity: 0.42;
    filter: none;
  }

  body.focus-mode .item.active {
    opacity: 1;
    filter: blur(0);
    border-color: rgba(88, 107, 100, 0.28);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1);
  }

  body.focus-mode .item.active .english,
  body.focus-mode .item.active .term strong {
    color: #0f1b17;
    text-shadow: 0 0 0 rgba(15, 27, 23, 0.24);
  }

  body:not(.no-blur).focus-mode .item {
    filter: blur(0.18px);
  }

  @media (prefers-reduced-motion: reduce) {
    .item,
    .english,
    .term strong {
      transition-duration: 1ms;
    }
  }

  body.playlist-open::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 35;
    background: rgba(245, 245, 247, 0.18);
    backdrop-filter: blur(8px) saturate(1.08);
    -webkit-backdrop-filter: blur(8px) saturate(1.08);
    animation: glassFadeIn 320ms var(--motion-ease) both;
  }

  body.playlist-open .library {
    position: fixed;
    left: 10px;
    right: 10px;
    bottom: 10px;
    z-index: 45;
    display: block;
    max-height: min(78vh, 680px);
    overflow: auto;
    margin: 0;
    padding: 14px;
    border: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.14);
    backdrop-filter: blur(24px) saturate(1.14);
    -webkit-backdrop-filter: blur(24px) saturate(1.14);
    animation: sheetIn 420ms var(--motion-soft) both;
  }

  body.playback-active.playlist-open .library {
    bottom: calc(164px + env(safe-area-inset-bottom));
  }
}

body.playback-active .app-shell {
  padding-bottom: calc(142px + env(safe-area-inset-bottom));
}

body.playback-active .player-panel {
  position: fixed !important;
  left: 50%;
  right: auto;
  top: auto !important;
  bottom: max(10px, env(safe-area-inset-bottom)) !important;
  z-index: 30;
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "now time"
    "controls controls";
  width: min(680px, calc(100vw - 24px));
  margin: 0;
  padding: 12px 14px 11px;
  transform: translateX(-50%);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.36) 46%, rgba(245, 245, 247, 0.22)),
    rgba(255, 255, 255, 0.42);
  color: var(--ink);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.88),
    inset 0 -1px 0 rgba(255, 255, 255, 0.2),
    0 18px 54px rgba(0, 0, 0, 0.14);
  backdrop-filter: blur(30px) saturate(1.34);
  -webkit-backdrop-filter: blur(30px) saturate(1.34);
  animation: playerBarIn 420ms var(--motion-soft) both;
}

body.playback-active .player-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.36), rgba(255, 255, 255, 0.04) 42%, rgba(255, 255, 255, 0)),
    radial-gradient(circle at 18% 0%, rgba(255, 255, 255, 0.2), transparent 44%),
    radial-gradient(circle at 88% 12%, rgba(160, 111, 63, 0.07), transparent 38%);
  pointer-events: none;
}

body.playback-active .now,
body.playback-active .transport,
body.playback-active .time-row {
  position: relative;
  z-index: 1;
}

body.playback-active .focus-card,
body.playback-active .mobile-player-topbar,
body.playback-active .lyric-stream,
body.playback-active .player-panel .eyebrow,
body.playback-active .now #scene {
  display: none;
}

body.playback-active .now {
  grid-area: now;
  min-width: 0;
  margin: 0;
  align-self: center;
}

body.playback-active .now h2 {
  display: -webkit-box;
  overflow: hidden;
  margin: 0;
  color: #121a17;
  font-size: 15px;
  line-height: 1.25;
  font-weight: 760;
  letter-spacing: 0;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

body.playback-active .transport {
  grid-area: controls;
  display: grid;
  grid-template-columns: 40px 40px 54px 40px 40px;
  gap: 6px;
  align-items: center;
  margin: 0 0 0 12px;
}

body.playback-active .mode-cycle,
body.playback-active .list-button {
  display: grid;
}

body.playback-active .icon-button {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.24)),
    rgba(255, 255, 255, 0.26);
  color: #17211d;
  font-size: 20px;
  font-weight: 850;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.66),
    0 6px 16px rgba(0, 0, 0, 0.07);
  backdrop-filter: blur(16px) saturate(1.18);
  -webkit-backdrop-filter: blur(16px) saturate(1.18);
  -webkit-tap-highlight-color: transparent;
}

body.playback-active .play-button {
  display: grid;
  place-items: center;
  width: 54px;
  height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(58, 58, 60, 0.98), rgba(26, 26, 28, 0.97)),
    rgba(29, 29, 31, 0.96);
  color: #fff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 10px 24px rgba(0, 0, 0, 0.2);
  -webkit-tap-highlight-color: transparent;
}

body.playback-active .icon-button:focus,
body.playback-active .play-button:focus {
  outline: none;
}

body.playback-active .icon-button:active {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.48), rgba(255, 255, 255, 0.18)),
    rgba(255, 255, 255, 0.2);
}

body.playback-active .play-button:active {
  background:
    linear-gradient(180deg, rgba(50, 50, 52, 0.98), rgba(18, 18, 20, 0.98)),
    rgba(29, 29, 31, 0.98);
}

body.playback-active .media-glyph {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  font-size: 17px;
  line-height: 1;
}

body.playback-active .pause-icon {
  display: none;
}

body.playback-active .play-button[data-state="playing"] .play-icon {
  display: none;
}

body.playback-active .play-button[data-state="playing"] .pause-icon {
  display: grid;
  font-size: 16px;
  font-weight: 900;
}

body.playback-active .time-row {
  grid-area: time;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin: 0 0 0 10px;
  color: #62706a;
  font-size: 10px;
}

body.playback-active .remaining-time {
  display: block;
  min-width: 68px;
  color: rgba(23, 33, 29, 0.58);
  font-size: 11px;
  font-weight: 760;
  line-height: 1;
  text-align: right;
  white-space: nowrap;
}

@media (max-width: 520px), (pointer: coarse) {
  body.playback-active .app-shell {
    padding-bottom: calc(102px + env(safe-area-inset-bottom));
  }

  body.playback-active .player-panel {
    grid-template-columns: 1fr;
    grid-template-areas:
      "now"
      "controls";
    gap: 5px;
    width: calc(100vw - 22px);
    padding: 8px 11px 8px;
    border-radius: 20px;
  }

  body.playback-active .transport {
    grid-template-columns: 36px 36px 48px 36px 36px;
    gap: 7px;
    justify-content: center;
    margin: 0;
  }

  body.playback-active .icon-button {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  body.playback-active .play-button {
    width: 48px;
    height: 40px;
  }

  body.playback-active .now h2 {
    font-size: 15px;
    line-height: 1.22;
    -webkit-line-clamp: 1;
  }

  body.playback-active .now {
    padding-right: 74px;
  }

  body.playback-active .time-row {
    position: absolute;
    right: 13px;
    top: 11px;
    margin: 0;
  }

  body.playback-active .remaining-time {
    min-width: 56px;
    font-size: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}