.inverse-stair-page {
  --inverse-ink: #1f1815;
  --inverse-paper: #f2e4c6;
  --inverse-card: #f7edd4;
  --inverse-cork: #7a5a3f;
  --inverse-cork-dark: #3b2a22;
  --inverse-thread: #8b1a3a;
  --inverse-amber: #c9a35c;
  --inverse-lamp: #f1c76e;
  --inverse-violet: #5b2a86;
  --inverse-slate: #1d2528;
  color: var(--inverse-ink);
}

.inverse-stair-topbar {
  border-color: rgba(201, 163, 92, 0.32);
}

.inverse-progressbar {
  height: 8px;
  max-width: 1180px;
  margin: 0 auto 10px;
  overflow: hidden;
  border: 1px solid rgba(31, 24, 21, 0.2);
  border-radius: 999px;
  background: rgba(242, 228, 198, 0.72);
  box-shadow: inset 0 1px 4px rgba(31, 24, 21, 0.2);
}

.inverse-progressbar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--inverse-thread), var(--inverse-amber));
  transition: width 320ms ease;
}

.inverse-progress {
  display: flex;
  justify-content: center;
  gap: 7px;
  margin: 0 auto 12px;
}

.inverse-progress__dot {
  width: 10px;
  height: 10px;
  border: 1px solid rgba(242, 228, 198, 0.62);
  border-radius: 50%;
  background: rgba(31, 24, 21, 0.56);
}

.inverse-progress__dot.is-current {
  background: var(--inverse-paper);
  box-shadow: 0 0 0 3px rgba(201, 163, 92, 0.24);
}

.inverse-progress__dot.is-filled {
  border-color: rgba(242, 228, 198, 0.92);
  background: var(--inverse-amber);
  box-shadow: 0 0 12px rgba(201, 163, 92, 0.46);
}

.inverse-room {
  max-width: 1180px;
  margin: 0 auto;
}

.inverse-room__scene {
  position: relative;
  height: min(730px, calc(100vh - 150px));
  min-height: 660px;
  overflow: hidden;
  border: 1px solid rgba(242, 228, 198, 0.16);
  border-radius: 8px;
  background:
    radial-gradient(circle at 44% 18%, rgba(241, 199, 110, 0.22), transparent 22%),
    radial-gradient(circle at 86% 32%, rgba(91, 42, 134, 0.2), transparent 24%),
    linear-gradient(180deg, #342821 0%, #241d19 48%, #12100f 100%);
  box-shadow: 0 24px 58px rgba(12, 8, 6, 0.42);
  isolation: isolate;
}

.inverse-room__scene::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.26), transparent 17%, transparent 82%, rgba(0, 0, 0, 0.32)),
    repeating-linear-gradient(90deg, rgba(242, 228, 198, 0.04) 0 1px, transparent 1px 84px),
    repeating-linear-gradient(0deg, rgba(242, 228, 198, 0.026) 0 1px, transparent 1px 76px);
}

.inverse-room__scene::after {
  content: "";
  position: absolute;
  left: -8%;
  right: -8%;
  bottom: -108px;
  height: 268px;
  z-index: -1;
  background:
    repeating-linear-gradient(90deg, rgba(242, 228, 198, 0.05) 0 2px, transparent 2px 88px),
    linear-gradient(180deg, #4b3226 0%, #1b1310 100%);
  transform: perspective(760px) rotateX(46deg);
  transform-origin: bottom;
}

.inverse-room__lampglow {
  position: absolute;
  left: 42%;
  top: 48px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(241, 199, 110, 0.28), rgba(241, 199, 110, 0.08) 45%, transparent 70%);
  filter: blur(2px);
  pointer-events: none;
}

.linked-board-arch {
  position: absolute;
  right: 5%;
  top: 164px;
  width: 126px;
  height: 176px;
  border: 8px solid rgba(24, 18, 17, 0.94);
  border-bottom: 0;
  border-radius: 64px 64px 4px 4px;
  background: linear-gradient(180deg, #151111, #0c0a0a);
  box-shadow: inset 0 0 30px rgba(91, 42, 134, 0.12), 0 18px 30px rgba(8, 5, 4, 0.26);
}

.linked-board-arch span,
.linked-board-arch i,
.linked-board-arch b {
  position: absolute;
  display: block;
}

.linked-board-arch span {
  left: 26px;
  top: 48px;
  width: 64px;
  height: 44px;
  border: 2px solid rgba(242, 228, 198, 0.42);
  border-radius: 4px;
  background:
    linear-gradient(90deg, transparent 0 45%, rgba(139, 26, 58, 0.7) 46% 51%, transparent 52%),
    #2c241f;
}

.linked-board-arch i {
  left: 34px;
  top: 102px;
  width: 50px;
  height: 8px;
  border-radius: 999px;
  background: rgba(139, 26, 58, 0.6);
}

.linked-board-arch b {
  left: 25px;
  top: 128px;
  width: 66px;
  height: 12px;
  border-radius: 999px;
  background: rgba(242, 228, 198, 0.44);
}

.inverse-shelf {
  position: absolute;
  top: 42px;
  left: 4.5%;
  right: 4.5%;
  color: var(--inverse-paper);
}

.inverse-shelf__label {
  margin: 0 0 8px 10px;
  font-family: "Cinzel", serif;
  font-size: 0.78rem;
  letter-spacing: 0;
  text-transform: uppercase;
  opacity: 0.86;
}

.inverse-shelf__slots {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  padding: 10px;
  border: 1px solid rgba(242, 228, 198, 0.15);
  border-radius: 8px;
  background: rgba(18, 14, 13, 0.68);
  box-shadow: inset 0 -8px 18px rgba(0, 0, 0, 0.2);
}

.inverse-shelf__slot.is-current .reversal-map {
  border-color: rgba(201, 163, 92, 0.72);
}

.reversal-map {
  position: relative;
  min-height: 96px;
  padding: 18px 8px 8px;
  overflow: hidden;
  border: 1px solid rgba(242, 228, 198, 0.16);
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(69, 52, 42, 0.75), rgba(30, 23, 19, 0.96));
  color: rgba(242, 228, 198, 0.5);
  text-align: center;
}

.reversal-map.is-filled {
  border-color: rgba(201, 163, 92, 0.58);
  background:
    radial-gradient(circle at 50% 0%, rgba(201, 163, 92, 0.18), transparent 48%),
    linear-gradient(180deg, #6b523b, #2c211b);
  color: var(--inverse-paper);
  box-shadow: 0 0 18px rgba(201, 163, 92, 0.2);
}

.reversal-map__pin {
  position: absolute;
  left: 50%;
  top: 7px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--inverse-thread);
  box-shadow: 0 0 0 3px rgba(139, 26, 58, 0.18);
  transform: translateX(-50%);
}

.reversal-map span,
.reversal-map strong,
.reversal-map em {
  display: block;
}

.reversal-map span {
  margin-top: 4px;
  font-size: 0.66rem;
  text-transform: uppercase;
  opacity: 0.82;
}

.reversal-map strong {
  margin-top: 5px;
  font-size: 0.76rem;
  line-height: 1.16;
}

.reversal-map:not(.is-filled) strong {
  margin-top: 10px;
  color: var(--inverse-amber);
  font-family: "Cinzel", serif;
  font-size: 1.1rem;
}

.reversal-map em {
  margin-top: 5px;
  color: #e7c977;
  font-size: 0.68rem;
  font-style: normal;
}

.inverse-worktable {
  position: absolute;
  left: 50%;
  bottom: 30px;
  width: min(1060px, 94%);
  min-height: 438px;
  padding: 22px;
  border: 1px solid rgba(242, 228, 198, 0.18);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(76, 53, 39, 0.96), rgba(39, 27, 22, 0.99)),
    repeating-linear-gradient(90deg, rgba(242, 228, 198, 0.07) 0 1px, transparent 1px 76px);
  box-shadow: 0 24px 44px rgba(12, 8, 6, 0.34);
  transform: translateX(-50%);
}

.inverse-worktable__grain {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.03) 0 1px, transparent 1px 30px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.16), transparent 18%, transparent 82%, rgba(0, 0, 0, 0.16));
}

.pin-tray {
  position: absolute;
  left: 22px;
  top: 22px;
  bottom: 70px;
  z-index: 2;
  width: 184px;
  padding: 14px;
  border: 1px solid rgba(242, 228, 198, 0.18);
  border-radius: 8px;
  background: rgba(242, 228, 198, 0.9);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.32);
}

.pin-tray__title span,
.question-board__header span,
.trace-line__label,
.forward-test span {
  display: block;
  font-family: "Cinzel", serif;
  font-size: 0.74rem;
  letter-spacing: 0;
  text-transform: uppercase;
  color: rgba(31, 24, 21, 0.68);
}

.pin-tray__title strong {
  display: block;
  margin-top: 2px;
  color: var(--inverse-ink);
  font-size: 0.95rem;
}

.pin-tray__pins {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.inverse-pin {
  position: relative;
  min-height: 48px;
  padding: 8px 10px 8px 36px;
  border: 1px solid rgba(31, 24, 21, 0.16);
  border-radius: 8px;
  background: linear-gradient(180deg, #fff5d8, #e7c777);
  color: var(--inverse-ink);
  text-align: left;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.inverse-pin:hover,
.inverse-pin:focus-visible {
  outline: none;
  transform: translateY(-2px);
  box-shadow: 0 10px 18px rgba(31, 24, 21, 0.2);
}

.inverse-pin:disabled {
  cursor: not-allowed;
  opacity: 0.52;
  transform: none;
  box-shadow: none;
}

.inverse-pin span {
  position: absolute;
  left: 12px;
  top: 50%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--inverse-thread);
  box-shadow: 0 0 0 4px rgba(139, 26, 58, 0.14);
  transform: translateY(-50%);
}

.inverse-pin strong {
  font-family: "Cinzel", serif;
  font-size: 1.24rem;
  line-height: 1;
}

.inverse-pin.is-wrong {
  animation: wrongPinDrop 320ms ease;
}

.inverse-pin.is-used {
  box-shadow: inset 0 0 0 2px rgba(201, 163, 92, 0.48);
}

.question-board {
  position: absolute;
  top: 22px;
  left: 224px;
  right: 172px;
  bottom: 70px;
  z-index: 2;
  padding: 16px;
  border: 10px solid rgba(64, 42, 30, 0.96);
  border-radius: 8px;
  background:
    radial-gradient(circle at 18% 30%, rgba(31, 24, 21, 0.09) 0 2px, transparent 3px),
    radial-gradient(circle at 72% 20%, rgba(31, 24, 21, 0.08) 0 2px, transparent 3px),
    repeating-linear-gradient(38deg, rgba(31, 24, 21, 0.04) 0 1px, transparent 1px 18px),
    var(--inverse-cork);
  box-shadow: inset 0 0 28px rgba(31, 24, 21, 0.24);
}

.question-board__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.question-board__header span {
  color: rgba(242, 228, 198, 0.78);
}

.question-board__header strong {
  color: #fff0cf;
  font-family: "Cinzel", serif;
  font-size: 1.05rem;
}

.chain-row {
  position: relative;
  display: grid;
  align-items: start;
  gap: 8px;
  min-height: 140px;
  padding: 12px 4px 4px;
}

.chain-row--single {
  grid-template-columns: 90px 1fr minmax(108px, 140px) 1fr 90px;
}

.chain-row--double {
  grid-template-columns: 86px 1fr minmax(104px, 128px) 1fr minmax(104px, 128px) 1fr 86px;
}

.chain-card {
  display: grid;
  place-items: center;
  min-height: 72px;
  padding: 10px;
  border: 1px solid rgba(31, 24, 21, 0.16);
  border-radius: 7px;
  background: var(--inverse-card);
  color: var(--inverse-ink);
  font-family: "Cinzel", serif;
  font-size: 1.72rem;
  line-height: 1;
  box-shadow: 0 10px 18px rgba(31, 24, 21, 0.16);
}

.chain-card--input {
  color: var(--inverse-violet);
}

.chain-card--input.is-revealed {
  color: var(--inverse-thread);
  animation: revealOrigin 420ms ease;
}

.chain-card--op {
  color: var(--inverse-slate);
}

.chain-card--output {
  color: var(--inverse-thread);
}

.chain-op {
  display: grid;
  gap: 10px;
}

.thread {
  position: relative;
  height: 74px;
}

.thread::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 35px;
  height: 4px;
  border-radius: 999px;
  background: var(--inverse-thread);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.12);
}

.inverse-slot {
  display: grid;
  place-items: center;
  min-height: 48px;
  border: 2px dashed rgba(242, 228, 198, 0.48);
  border-radius: 8px;
  background: rgba(31, 24, 21, 0.16);
}

.inverse-slot i {
  width: 34px;
  height: 4px;
  border-radius: 999px;
  background: rgba(242, 228, 198, 0.38);
}

.inverse-slot span {
  display: inline-grid;
  place-items: center;
  min-width: 58px;
  min-height: 38px;
  padding: 4px 10px;
  border-radius: 999px;
  background: linear-gradient(180deg, #f8d889, #c9a35c);
  color: var(--inverse-ink);
  font-family: "Cinzel", serif;
  font-size: 1.18rem;
  box-shadow: 0 0 0 4px rgba(139, 26, 58, 0.16);
  animation: pinLock 220ms ease;
}

.trace-line {
  margin-top: 14px;
  padding: 12px;
  border: 1px solid rgba(242, 228, 198, 0.2);
  border-radius: 8px;
  background: rgba(31, 24, 21, 0.32);
  color: var(--inverse-paper);
}

.trace-line__label {
  color: rgba(242, 228, 198, 0.76);
}

.trace-line__values {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  min-height: 48px;
  margin-top: 8px;
}

.trace-line__values strong {
  display: grid;
  place-items: center;
  min-width: 56px;
  height: 42px;
  border-radius: 8px;
  background: rgba(242, 228, 198, 0.92);
  color: var(--inverse-ink);
  font-family: "Cinzel", serif;
  font-size: 1.24rem;
  animation: traceValue 240ms ease;
}

.trace-line__arrow {
  color: #f0c36e;
  font-weight: 900;
}

.trace-line p {
  min-height: 20px;
  margin: 6px 0 0;
  color: rgba(242, 228, 198, 0.72);
  font-size: 0.86rem;
}

.reveal-origin {
  position: relative;
  z-index: 5;
  display: block;
  min-height: 48px;
  margin: 14px auto 0;
  padding: 0 20px;
  border: 1px solid rgba(31, 24, 21, 0.18);
  border-radius: 8px;
  background: linear-gradient(180deg, #f4dc9a, #c9a35c);
  color: var(--inverse-ink);
  font-weight: 900;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.reveal-origin:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.reveal-origin.is-ready {
  box-shadow: 0 0 22px rgba(241, 199, 110, 0.42);
}

.reveal-origin.is-ready:hover,
.reveal-origin.is-ready:focus-visible {
  outline: none;
  transform: translateY(-2px);
}

.inverse-steps {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 10px;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  pointer-events: none;
}

.inverse-steps span {
  padding: 7px 10px;
  border: 1px solid rgba(242, 228, 198, 0.18);
  border-radius: 999px;
  background: rgba(18, 14, 13, 0.5);
  color: rgba(242, 228, 198, 0.88);
  font-size: 0.82rem;
}

.inverse-celebration {
  position: absolute;
  z-index: 8;
  left: 50%;
  top: 18px;
  width: min(720px, calc(100% - 48px));
  padding: 16px 18px;
  border: 1px solid rgba(201, 163, 92, 0.46);
  border-radius: 8px;
  background: rgba(242, 228, 198, 0.98);
  color: var(--inverse-ink);
  box-shadow: 0 18px 34px rgba(12, 8, 6, 0.28);
  transform: translateX(-50%);
}

.inverse-celebration > span {
  display: block;
  font-family: "Cinzel", serif;
  font-size: 0.82rem;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--inverse-violet);
}

.inverse-celebration p {
  margin: 6px 0 10px;
}

.forward-test {
  display: grid;
  gap: 5px;
  margin: 10px 0 12px;
  padding: 10px;
  border-radius: 8px;
  background: rgba(139, 26, 58, 0.1);
}

.forward-test p {
  margin: 0;
  font-size: 0.92rem;
}

.inverse-veth {
  position: absolute;
  right: 36px;
  top: 248px;
  width: 172px;
  height: 260px;
  pointer-events: none;
}

.inverse-veth__lamp {
  position: absolute;
  left: -32px;
  top: 76px;
  width: 34px;
  height: 86px;
  border-radius: 18px 18px 6px 6px;
  background: linear-gradient(180deg, #f0d99b, #6d4d2d);
  box-shadow: 0 0 34px rgba(241, 199, 110, 0.5);
}

.inverse-veth__lamp span {
  position: absolute;
  left: 10px;
  top: -22px;
  width: 13px;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 70%, #fff2a3, #d56e2d 72%);
  animation: inverseLamp 1300ms ease-in-out infinite alternate;
}

.inverse-veth__head {
  position: absolute;
  left: 58px;
  top: 8px;
  width: 56px;
  height: 62px;
  border-radius: 42% 42% 48% 48%;
  background: #bd815c;
  box-shadow: inset -8px -6px 0 rgba(75, 43, 30, 0.22);
}

.inverse-veth__head span {
  position: absolute;
  left: 13px;
  top: 28px;
  width: 30px;
  height: 6px;
  border-radius: 999px;
  background: #32231e;
}

.inverse-veth__body {
  position: absolute;
  left: 40px;
  top: 74px;
  width: 92px;
  height: 124px;
  border-radius: 28px 28px 16px 16px;
  background: linear-gradient(180deg, #5b2a86, #35204f);
}

.inverse-veth__arm {
  position: absolute;
  left: 22px;
  top: 104px;
  width: 86px;
  height: 22px;
  border-radius: 999px;
  background: #b87956;
  transform: rotate(-22deg);
}

.inverse-veth__glass {
  position: absolute;
  left: 0;
  top: 84px;
  width: 42px;
  height: 42px;
  border: 5px solid rgba(242, 228, 198, 0.76);
  border-radius: 50%;
  background: rgba(242, 228, 198, 0.1);
}

.inverse-veth__glass::after {
  content: "";
  position: absolute;
  right: -22px;
  bottom: -12px;
  width: 34px;
  height: 7px;
  border-radius: 999px;
  background: rgba(242, 228, 198, 0.76);
  transform: rotate(36deg);
}

.inverse-veth__line {
  position: absolute;
  right: 0;
  top: -98px;
  width: 250px;
  min-height: 68px;
  padding: 12px 14px;
  border: 1px solid rgba(242, 228, 198, 0.2);
  border-radius: 8px;
  background: rgba(242, 228, 198, 0.96);
  color: var(--inverse-ink);
  font-size: 0.94rem;
  line-height: 1.24;
  box-shadow: 0 12px 24px rgba(12, 8, 6, 0.22);
}

.inverse-veth__line::after {
  content: "";
  position: absolute;
  right: 34px;
  bottom: -10px;
  width: 18px;
  height: 18px;
  background: inherit;
  border-right: 1px solid rgba(242, 228, 198, 0.2);
  border-bottom: 1px solid rgba(242, 228, 198, 0.2);
  transform: rotate(45deg);
}

.inverse-room__scene--reward {
  overflow-y: auto;
}

.reversal-reward {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}

.reversal-reward__card {
  position: relative;
  width: min(920px, 96%);
  padding: 24px;
  border: 1px solid rgba(242, 228, 198, 0.2);
  border-radius: 8px;
  background:
    radial-gradient(circle at 82% 18%, rgba(91, 42, 134, 0.13), transparent 34%),
    radial-gradient(circle at 42% 0%, rgba(201, 163, 92, 0.18), transparent 42%),
    linear-gradient(180deg, rgba(242, 228, 198, 0.98), rgba(218, 195, 152, 0.98));
  color: var(--inverse-ink);
  box-shadow: 0 24px 50px rgba(12, 8, 6, 0.34);
}

.reversal-reward__copy span {
  display: block;
  font-family: "Cinzel", serif;
  font-size: 0.78rem;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--inverse-violet);
}

.reversal-reward__copy h2 {
  margin: 4px 0 6px;
  font-family: "Cinzel", serif;
  font-size: 2rem;
  line-height: 1.1;
}

.reversal-reward__copy p {
  max-width: 560px;
  margin: 0;
  color: rgba(31, 24, 21, 0.74);
}

.reversal-reward__maps {
  display: grid;
  grid-template-columns: repeat(6, minmax(76px, 1fr));
  gap: 10px;
  margin: 18px 0;
}

.reversal-reward__key {
  position: absolute;
  right: 28px;
  top: 26px;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background:
    radial-gradient(circle, #f1c76e 0 23%, transparent 24% 33%, #8b1a3a 34% 40%, transparent 41%),
    radial-gradient(circle, rgba(91, 42, 134, 0.16), transparent 66%);
}

.reversal-reward__key span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 72px;
  height: 12px;
  border-radius: 999px;
  background: var(--inverse-thread);
  transform: translate(-16%, -50%);
}

.reversal-reward__key i {
  position: absolute;
  right: 4px;
  top: 44px;
  width: 16px;
  height: 34px;
  border-radius: 2px;
  border-left: 8px solid var(--inverse-thread);
  border-bottom: 8px solid var(--inverse-thread);
}

.reversal-reward__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.reversal-reward__badges span {
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(139, 26, 58, 0.1);
  color: rgba(31, 24, 21, 0.82);
  font-size: 0.86rem;
}

.reversal-reward .reward-stars {
  margin: 10px 0 16px;
  font-size: 1.5rem;
  color: rgba(31, 24, 21, 0.24);
}

.reversal-reward .reward-stars span.is-filled {
  color: var(--inverse-amber);
}

.reversal-reward__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@keyframes wrongPinDrop {
  0% { transform: translateY(0) rotate(0); }
  45% { transform: translateY(6px) rotate(-5deg); }
  100% { transform: translateY(0) rotate(0); }
}

@keyframes pinLock {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.92);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes traceValue {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes revealOrigin {
  from {
    opacity: 0;
    transform: translateY(6px) scale(0.94);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes inverseLamp {
  from { transform: translateY(0) scaleX(0.88); }
  to { transform: translateY(-3px) scaleX(1.08); }
}

@media (max-width: 1060px) {
  .inverse-room__scene {
    height: auto;
    min-height: 0;
    overflow-y: auto;
    padding: 24px;
  }

  .inverse-shelf,
  .inverse-worktable,
  .inverse-veth {
    position: relative;
    inset: auto;
  }

  .inverse-shelf {
    margin-bottom: 18px;
  }

  .inverse-worktable {
    left: auto;
    width: 100%;
    min-height: 0;
    padding: 18px;
    transform: none;
  }

  .pin-tray,
  .question-board,
  .inverse-steps {
    position: relative;
    inset: auto;
  }

  .pin-tray {
    width: 100%;
    margin-bottom: 14px;
  }

  .pin-tray__pins {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .question-board {
    left: auto;
    right: auto;
    top: auto;
    bottom: auto;
  }

  .inverse-steps {
    margin-top: 14px;
  }

  .inverse-veth {
    width: 100%;
    height: 118px;
    margin-top: 18px;
  }

  .inverse-veth__line {
    left: 190px;
    right: auto;
    top: 16px;
    width: min(420px, calc(100% - 205px));
  }

  .inverse-veth__lamp,
  .inverse-veth__head,
  .inverse-veth__body,
  .inverse-veth__arm,
  .inverse-veth__glass {
    transform: scale(0.72);
    transform-origin: left bottom;
  }

  .linked-board-arch,
  .inverse-room__lampglow {
    display: none;
  }
}

@media (max-width: 760px) {
  .inverse-shelf__slots,
  .reversal-reward__maps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .chain-row,
  .chain-row--single,
  .chain-row--double {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }

  .chain-card {
    min-width: 76px;
    font-size: 1.42rem;
  }

  .thread {
    width: 28px;
    flex: 0 0 28px;
  }

  .question-board {
    padding: 12px;
    border-width: 7px;
  }

  .inverse-veth {
    display: none;
  }

  .reversal-reward {
    align-items: start;
    padding: 16px;
  }

  .reversal-reward__key {
    position: relative;
    right: auto;
    top: auto;
    margin: 12px 0;
  }
}