.companion-model-card {
  position: relative;
  z-index: 2;
  overflow: hidden;
  border: 1px solid rgba(23,52,45,.15);
  border-radius: 32px;
  background: rgba(246,244,237,.88);
  box-shadow: 16px 18px 0 rgba(23,52,45,.07), 0 30px 80px rgba(23,52,45,.12);
}

.companion-stage-meta {
  min-height: 58px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid rgba(23,52,45,.1);
  color: #61746e;
  background: rgba(255,253,248,.76);
  font: 750 10px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .15em;
}

.companion-stage-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.companion-stage-status::before {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #39a071;
  box-shadow: 0 0 0 6px rgba(57,160,113,.1);
  content: "";
}

.companion-stage {
  position: relative;
  height: clamp(570px, 54vw, 650px);
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 50% 45%, rgba(255,255,255,.82), transparent 46%),
    #d4d5ce;
}

.companion-stage::after {
  position: absolute;
  inset: 24px;
  z-index: -1;
  border: 1px solid rgba(23,52,45,.11);
  content: "";
  pointer-events: none;
}

.companion-stage canvas {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: grab;
  opacity: 0;
  touch-action: pan-y;
  transition: opacity .35s ease;
}

.companion-stage canvas:active {
  cursor: grabbing;
}

.companion-stage canvas:focus-visible {
  outline: 3px solid rgba(23,107,87,.45);
  outline-offset: -7px;
}

.companion-stage.is-ready canvas {
  opacity: 1;
}

.companion-model-poster {
  position: absolute;
  z-index: 1;
  inset: 0;
  display: grid;
  place-items: center;
  transition: opacity .35s ease;
}

.companion-stage.is-ready .companion-model-poster {
  opacity: 0;
  pointer-events: none;
}

.poster-book {
  position: relative;
  width: 212px;
  height: 310px;
  padding: 34px 28px;
  border: 1px solid rgba(255,255,255,.22);
  color: #eef5e8;
  background: linear-gradient(145deg, #174f40, #102f27);
  box-shadow: -14px 18px 0 #f5f0e5, -22px 26px 45px rgba(23,52,45,.2);
  transform: perspective(900px) rotateX(7deg) rotateY(-13deg) rotateZ(-2deg);
}

.poster-book::before {
  position: absolute;
  top: -2px;
  bottom: -2px;
  left: -12px;
  width: 20px;
  border-radius: 12px;
  background: #10382e;
  content: "";
}

.poster-book img {
  width: 74px;
  height: 74px;
  padding: 8px;
  border-radius: 18px;
  background: #fffdf8;
}

.poster-book strong {
  display: block;
  margin-top: 35px;
  font: 750 32px/1.16 Georgia, "Songti SC", serif;
}

.poster-book small {
  display: block;
  margin-top: 14px;
  color: #bfd1c8;
  font-size: 12px;
  letter-spacing: .08em;
}

.companion-stage-guide {
  position: absolute;
  z-index: 4;
  left: 28px;
  bottom: 24px;
  color: rgba(23,52,45,.68);
  font: 700 10px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .13em;
  pointer-events: none;
}

.companion-model-error {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: 28px;
  display: none;
  width: min(440px, calc(100% - 44px));
  padding: 15px 17px;
  border: 1px solid rgba(217,99,91,.22);
  border-radius: 16px;
  color: #84463f;
  background: rgba(255,246,243,.94);
  font-size: 12px;
  line-height: 1.65;
  transform: translateX(-50%);
}

.companion-model-error:not([hidden]) {
  display: block;
}

.companion-stage .yueya-book__status {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.companion-controlbar {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  gap: 24px;
  align-items: center;
  min-height: 104px;
  padding: 20px 24px;
  border-top: 1px solid rgba(23,52,45,.1);
  background: rgba(255,253,248,.9);
}

.companion-control-copy small {
  display: block;
  color: #758880;
  font-size: 11px;
  line-height: 1.5;
}

.companion-control-copy strong {
  display: block;
  margin-top: 7px;
  color: #17342d;
  font-size: 19px;
  letter-spacing: -.025em;
}

.companion-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 9px;
}

.companion-controls button {
  min-height: 43px;
  padding: 0 15px;
  border: 1px solid rgba(23,52,45,.14);
  border-radius: 999px;
  color: #24473e;
  background: #fff;
  cursor: pointer;
  font-size: 12px;
  font-weight: 820;
  transition: transform .16s ease, border-color .16s ease, background .16s ease;
}

.companion-controls button:hover {
  transform: translateY(-2px);
  border-color: rgba(23,107,87,.35);
}

.companion-controls button:disabled {
  cursor: not-allowed;
  opacity: .38;
  transform: none;
}

.companion-controls .companion-primary {
  min-width: 144px;
  border-color: #176b57;
  color: #fff;
  background: #176b57;
}

.companion-controls .companion-primary:hover {
  background: #105543;
}