.m3d-fig {
  container-type: inline-size;
}
.m3d {
  --g: calc(100cqw / 95.5);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-lg);
  background-color: #f8f9fa;
  background-image:
    linear-gradient(#e3e9ef 1px, transparent 1px),
    linear-gradient(90deg, #e3e9ef 1px, transparent 1px),
    linear-gradient(#eef2f6 1px, transparent 1px),
    linear-gradient(90deg, #eef2f6 1px, transparent 1px);
  background-size:
    calc(var(--g) * 5) calc(var(--g) * 5),
    calc(var(--g) * 5) calc(var(--g) * 5),
    var(--g) var(--g),
    var(--g) var(--g);
  background-position: calc(var(--g) * 1.6) calc(var(--g) * 3.2);
  outline: none;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.m3d:focus-visible {
  box-shadow: 0 0 0 2px var(--glacier-line);
}
.m3d-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
.m3d-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0;
  transition: opacity 0.5s ease;
  touch-action: pan-y;
}
.m3d.is-touch .m3d-canvas,
.m3d--max .m3d-canvas {
  touch-action: none;
}
.m3d--ready .m3d-canvas {
  opacity: 1;
}
.m3d--ready .m3d-poster {
  opacity: 0;
}
.m3d-note {
  position: absolute;
  left: 16px;
  bottom: 14px;
  right: 16px;
  margin: 0;
  font: 400 13px/1.4 var(--sans);
  color: var(--muted);
}

/* loading: a thin bar along the bottom edge */
.m3d--loading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 30%;
  background: var(--glacier);
  animation: m3d-load 1.1s ease-in-out infinite;
}
@keyframes m3d-load {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(340%);
  }
}

/* ---- controls ---- */
.m3d-ui {
  position: absolute;
  inset: 0;
  pointer-events: none;
  font: 400 13px/1.3 var(--sans);
  color: var(--ink);
}
.m3d-ui > * {
  pointer-events: auto;
}
.m3d--clean .m3d-ui,
.m3d--clean .m3d-labels,
.m3d--clean .m3d-pivot,
.m3d--clean .m3d-poster {
  display: none;
}
.m3d--clean {
  border-radius: 0;
}
.m3d--clean.m3d--loading::after {
  display: none;
}
.m3d:not(.m3d--ready) .m3d-ui {
  display: none;
}

.m3d-hint {
  position: absolute;
  left: 14px;
  top: 12px;
  display: flex;
  gap: 10px;
  align-items: baseline;
  pointer-events: none;
  padding: 7px 11px;
  border-radius: var(--pill);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 0 0 1px rgba(22, 32, 42, 0.07);
  font-size: 12.5px;
  color: var(--muted);
  opacity: 0;
  transition: opacity 0.3s;
}
.m3d-hint b {
  font-weight: 600;
  color: var(--basalt);
}
.m3d--ready:hover .m3d-hint,
.m3d--ready.is-active .m3d-hint,
.m3d--ready:focus-within .m3d-hint {
  opacity: 1;
}

.m3d-bar {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 5px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(10px) saturate(1.3);
  -webkit-backdrop-filter: blur(10px) saturate(1.3);
  box-shadow:
    0 0 0 1px rgba(22, 32, 42, 0.08),
    0 6px 20px rgba(15, 25, 40, 0.1);
  overflow-x: auto;
  scrollbar-width: none;
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity 0.25s,
    transform 0.25s;
}
.m3d-bar::-webkit-scrollbar {
  display: none;
}
.m3d--ready:hover .m3d-bar,
.m3d--ready.is-active .m3d-bar,
.m3d--ready:focus-within .m3d-bar,
.m3d--max .m3d-bar {
  opacity: 1;
  transform: none;
}
@media (hover: none) {
  .m3d--ready .m3d-bar {
    opacity: 1;
    transform: none;
  }
}
.m3d-sp {
  flex: 1;
}
.m3d-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: none;
  height: 32px;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--ink-2);
  font: 500 12.5px/1 var(--sans);
  cursor: pointer;
  white-space: nowrap;
}
.m3d-btn svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.m3d-btn:hover {
  background: var(--mist);
  color: var(--basalt);
}
.m3d-btn[aria-pressed="true"],
.m3d-btn[aria-expanded="true"] {
  background: var(--glacier-tint);
  color: var(--glacier-deep);
}
.m3d-btn--icon span {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.m3d-btn--icon {
  padding: 0 8px;
}
@container (max-width: 640px) {
  .m3d-btn span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }
  .m3d-btn {
    padding: 0 8px;
  }
  .m3d-hint span {
    display: none;
  }
  .m3d-bar {
    left: 8px;
    right: 8px;
    bottom: 8px;
  }
}

.m3d-menu {
  position: absolute;
  bottom: 60px;
  min-width: 210px;
  max-width: min(320px, calc(100% - 16px));
  max-height: calc(100% - 80px);
  overflow: auto;
  padding: 8px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow:
    0 0 0 1px rgba(22, 32, 42, 0.08),
    0 12px 32px rgba(15, 25, 40, 0.16);
}
.m3d-mh {
  margin: 4px 8px 6px;
  font: 500 10.5px/1.4 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
}
.m3d-menu > button,
.m3d-plist button {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 0;
  border-radius: 8px;
  background: none;
  font: 400 13.5px/1.3 var(--sans);
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}
.m3d-menu > button:hover,
.m3d-plist button:hover {
  background: var(--mist);
}
.m3d-menu > button[aria-pressed="true"] {
  color: var(--glacier-deep);
}
.m3d-menu kbd {
  margin-left: auto;
  font: 400 11px/1 var(--mono);
  color: var(--faint);
}
.m3d-check {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 13.5px;
  cursor: pointer;
}
.m3d-check:hover {
  background: var(--mist);
}
.m3d-check input {
  width: 15px;
  height: 15px;
  margin: 0;
  accent-color: var(--glacier);
}
.m3d-check i {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--sw);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.15);
}
.m3d-choice {
  padding: 6px 10px 10px;
}
.m3d-choice > span {
  display: block;
  margin-bottom: 6px;
  font-size: 13.5px;
}
.m3d-choice > div,
.m3d-seg {
  display: flex;
  gap: 2px;
  padding: 2px;
  border-radius: 9px;
  background: var(--mist);
}
.m3d-choice button,
.m3d-seg button {
  flex: 1;
  padding: 6px 8px;
  border: 0;
  border-radius: 7px;
  background: none;
  font: 500 12px/1 var(--sans);
  color: var(--muted);
  cursor: pointer;
}
.m3d-choice button[aria-checked="true"],
.m3d-seg button[aria-checked="true"] {
  background: #fff;
  color: var(--basalt);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}
.m3d-cut {
  width: 280px;
}
.m3d-seg {
  margin: 0 6px;
}
.m3d-cut input[type="range"] {
  width: calc(100% - 12px);
  margin: 12px 6px 4px;
  accent-color: var(--glacier);
}
.m3d-cut output {
  display: block;
  margin: 0 8px 4px;
  font: 400 12px/1.4 var(--mono);
  color: var(--muted);
}
.m3d-parts {
  width: 300px;
}
.m3d-parts input {
  width: calc(100% - 12px);
  margin: 0 6px 6px;
  padding: 8px 10px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  font: 400 13.5px/1 var(--sans);
}
.m3d-plist {
  max-height: 300px;
  overflow: auto;
}
.m3d-pg {
  margin: 10px 10px 2px;
  font: 500 10.5px/1.4 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}
.m3d-plist b {
  flex: none;
  min-width: 22px;
  height: 22px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--ink-2);
  border-radius: 50%;
  font: 500 10.5px/1 var(--mono);
}
.m3d-plist button[aria-current="true"] {
  background: var(--glacier-tint);
}

.m3d-card {
  position: absolute;
  right: 12px;
  top: 12px;
  width: min(368px, calc(100% - 24px));
  max-height: calc(100% - 84px);
  overflow: auto;
  padding: 16px 16px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow:
    0 0 0 1px rgba(22, 32, 42, 0.08),
    0 12px 32px rgba(15, 25, 40, 0.16);
}
.m3d-card h3 {
  margin: 10px 30px 8px 0;
  font: 500 20px/1.2 var(--display);
  letter-spacing: -0.012em;
  color: var(--basalt);
  text-wrap: balance;
}
.m3d-badges,
.m3d-status {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-right: 30px;
}
.m3d-status {
  margin: 0 0 10px;
}
.m3d-b {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--bb, #eceff2);
  color: var(--bc, #4b5866);
  font: 500 11.5px/1 var(--sans);
  white-space: nowrap;
}
.m3d-b--num {
  padding-left: 3px;
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--line-soft);
  color: var(--muted);
}
.m3d-b--num b {
  display: inline-grid;
  place-items: center;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--basalt);
  color: #fff;
  font: 500 10.5px/1 var(--mono);
}
.m3d-b--sys {
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--line-soft);
  color: var(--ink-2);
}
.m3d-b--sys i {
  width: 9px;
  height: 9px;
  border-radius: 3px;
  background: var(--sw);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.12);
}
.m3d-b--ill {
  background: #fdf1dc;
  color: #8a5a00;
}
.m3d-b--est {
  background: #f3ebfb;
  color: #6a3fa0;
}
.m3d-b--ok {
  background: #e2f3e8;
  color: #1d7040;
}
.m3d-b--ill::before,
.m3d-b--est::before,
.m3d-b--ok::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.m3d-text {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-2);
}
.m3d-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin: 0 0 10px;
}
.m3d-sp {
  display: grid;
  gap: 3px;
  align-content: start;
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--mist, #f3f5f7);
}
.m3d-sp--wide {
  grid-column: 1 / -1;
}
.m3d-sp span {
  font: 500 10.5px/1.3 var(--sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--faint);
}
.m3d-sp strong {
  font: 500 13.5px/1.35 var(--sans);
  color: var(--basalt);
  font-variant-numeric: tabular-nums;
}
.m3d-cnote {
  margin: 0 0 10px;
  padding: 8px 10px;
  border-left: 3px solid #e7a93a;
  border-radius: 0 8px 8px 0;
  background: #fdf6e8;
  font-size: 12.5px;
  line-height: 1.45;
  color: #6d4c0f;
}
.m3d-foot {
  display: grid;
  gap: 6px;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
}
.m3d-dim {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 400 12px/1.3 var(--mono);
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}
.m3d-dim svg {
  width: 15px;
  height: 15px;
  flex: none;
  fill: none;
  stroke: var(--muted);
  stroke-width: 1.4;
}
.m3d-dim > span {
  font: 500 10.5px/1 var(--sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--faint);
}
.m3d-src {
  margin: 0;
  font-size: 12px;
  line-height: 1.45;
  color: var(--muted);
}
.m3d-src span {
  margin-right: 6px;
  font: 500 10.5px/1 var(--sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--faint);
}
.m3d-src a {
  color: var(--glacier-deep);
  text-decoration: underline;
  text-decoration-color: var(--glacier-line);
  text-underline-offset: 2px;
}
.m3d-x {
  position: absolute;
  right: 8px;
  top: 8px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 8px;
  background: none;
  cursor: pointer;
  color: var(--muted);
}
.m3d-x:hover {
  background: var(--mist);
}
.m3d-x svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
}
.m3d-acts {
  display: flex;
  gap: 6px;
  margin-top: 10px;
}
.m3d-acts button {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: #fff;
  font: 500 12.5px/1 var(--sans);
  color: var(--ink-2);
  cursor: pointer;
}
.m3d-acts button:hover {
  border-color: var(--glacier-line);
  color: var(--glacier-deep);
}
.m3d-acts button[aria-pressed="true"] {
  background: var(--glacier-tint);
  border-color: var(--glacier-line);
  color: var(--glacier-deep);
}
@container (max-width: 640px) {
  .m3d-card {
    top: auto;
    bottom: 56px;
    right: 8px;
    left: 8px;
    width: auto;
    max-height: 64%;
    padding: 12px 14px;
  }
  .m3d-b {
    height: 22px;
    padding: 0 8px;
    font-size: 11px;
  }
  .m3d-card h3 {
    font-size: 17px;
    margin: 8px 30px 6px 0;
  }
  .m3d-text {
    font-size: 13.5px;
  }
}

.m3d-toast {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(22, 32, 42, 0.86);
  color: #fff;
  font: 500 13px/1.3 var(--sans);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
}
.m3d-toast.is-on {
  opacity: 1;
}

/* labels drawn over the canvas */
.m3d-labels,
.m3d-pivot {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.m3d-balloon {
  position: absolute;
  left: -12px;
  top: -12px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid #3b4855;
  border-radius: 50%;
  background: #fff;
  font: 500 11px/1 var(--mono);
  color: #3b4855;
  cursor: pointer;
  pointer-events: auto;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}
.m3d-balloon:hover {
  border-color: var(--glacier);
  color: var(--glacier);
}
.m3d-balloon--note {
  width: auto;
  height: auto;
  left: 0;
  top: 0;
  translate: -50% -50%;
  padding: 4px 9px;
  border-radius: 999px;
  font: 500 11px/1.2 var(--sans);
  white-space: nowrap;
  border-color: var(--line);
  color: var(--ink-2);
}
.m3d-tag {
  position: absolute;
  left: 0;
  top: 0;
  translate: -50% -130%;
  padding: 3px 7px;
  border-radius: 6px;
  white-space: nowrap;
  background: #fff;
  font: 500 11.5px/1.2 var(--mono);
  color: var(--glacier-deep);
  box-shadow: 0 0 0 1px var(--glacier-line);
}
.m3d-tag--measure {
  color: var(--ember);
  box-shadow: 0 0 0 1px var(--ember-line);
}
.m3d-pivot {
  inset: auto;
  left: -5px;
  top: -5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--glacier);
  box-shadow: 0 0 0 3px rgba(3, 102, 214, 0.22);
  opacity: 0;
  transition: opacity 0.15s;
}

/* touch: start and stop */
.m3d-tap {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: end center;
  padding-bottom: 18px;
  border: 0;
  background: none;
  cursor: pointer;
}
.m3d-tap span {
  padding: 10px 16px;
  border-radius: var(--pill);
  background: var(--basalt);
  color: #fff;
  font: 500 14px/1 var(--sans);
  box-shadow: 0 6px 20px rgba(15, 25, 40, 0.25);
}
.m3d.is-touch .m3d-tap {
  display: none;
}
.m3d-done {
  display: none;
  position: absolute;
  right: 10px;
  top: 10px;
  padding: 9px 14px;
  border: 0;
  border-radius: var(--pill);
  background: var(--basalt);
  color: #fff;
  font: 500 13px/1 var(--sans);
}
.m3d.is-touch .m3d-done {
  display: block;
}
.m3d--coarse:not(.is-touch) .m3d-bar,
.m3d--coarse:not(.is-touch) .m3d-card {
  display: none;
}

/* full screen, and the CSS fallback for phones */
.m3d:fullscreen {
  aspect-ratio: auto;
  border-radius: 0;
}
.m3d--max {
  position: fixed;
  inset: 0;
  z-index: 1000;
  aspect-ratio: auto;
  border-radius: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
}
html.m3d-lock,
html.m3d-lock body {
  overflow: hidden;
}

/* the cover slot and figures inside a piece */
.p-cover.m3d-fig {
  max-width: 1160px;
}
.prose figure.m3d-fig {
  margin-block: 2.6em;
}
.m3d-fig figcaption {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--muted);
}
.p-cover.m3d-fig figcaption {
  max-width: 680px;
  margin: 14px auto 0;
  padding: 0;
}
@media (prefers-reduced-motion: reduce) {
  .m3d-poster,
  .m3d-canvas,
  .m3d-bar,
  .m3d-hint {
    transition: none;
  }
  .m3d--loading::after {
    animation: none;
  }
}
@media print {
  .m3d-ui,
  .m3d-canvas,
  .m3d-labels {
    display: none;
  }
  .m3d-poster {
    opacity: 1 !important;
  }
}