.f3dp-stl-splitter {
  --f3dp-stl-splitter-bg: #f4f7f9;
  --f3dp-stl-splitter-card: #ffffff;
  --f3dp-stl-splitter-text: #102437;
  --f3dp-stl-splitter-muted: #5c6b78;
  --f3dp-stl-splitter-dark: #102437;
  --f3dp-stl-splitter-dark-2: #1b3348;
  --f3dp-stl-splitter-yellow: #ffd02c;
  --f3dp-stl-splitter-yellow-hover: #ffc20a;
  --f3dp-stl-splitter-orange: #ff7a00;
  --f3dp-stl-splitter-orange-dark: #ea580c;
  --f3dp-stl-splitter-border: #e6ebf0;
  --f3dp-stl-splitter-soft: #f4f7f9;
  --f3dp-stl-splitter-success: #0f766e;
  --f3dp-stl-splitter-warning: #92400e;
  --f3dp-stl-splitter-danger: #b91c1c;
  --f3dp-stl-splitter-shadow: 0 18px 40px rgba(20, 38, 55, 0.08);
  background: var(--f3dp-stl-splitter-bg);
  box-sizing: border-box;
  color: var(--f3dp-stl-splitter-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  padding: 32px clamp(16px, 4vw, 48px) 48px;
}

.f3dp-stl-splitter *,
.f3dp-stl-splitter *::before,
.f3dp-stl-splitter *::after {
  box-sizing: border-box;
}

body.f3dp-stl-splitter-viewer-lock {
  overflow: hidden;
}

.f3dp-stl-splitter [hidden] {
  display: none !important;
}

.f3dp-stl-splitter__tool {
  margin: 0 auto;
  width: min(1560px, 100%);
}

.f3dp-stl-splitter__layout {
  align-items: start;
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(320px, 380px) minmax(0, 1fr);
}

.f3dp-stl-splitter__panel {
  background: var(--f3dp-stl-splitter-card);
  border: 1px solid var(--f3dp-stl-splitter-border);
  border-radius: 4px;
  box-shadow: var(--f3dp-stl-splitter-shadow);
  padding: 22px;
}

.f3dp-stl-splitter__sidebar {
  align-content: start;
  background: var(--f3dp-stl-splitter-card);
  border: 1px solid var(--f3dp-stl-splitter-border);
  border-radius: 4px;
  box-shadow: var(--f3dp-stl-splitter-shadow);
  display: grid;
  gap: 12px;
  max-height: clamp(560px, calc(100vh - 180px), 780px);
  min-width: 0;
  overflow: auto;
  padding: 14px;
}

.f3dp-stl-splitter__sidebar .f3dp-stl-splitter__panel {
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  padding: 0;
}

.f3dp-stl-splitter__upload-panel,
.f3dp-stl-splitter__controls,
.f3dp-stl-splitter__options-panel,
.f3dp-stl-splitter__viewer-panel,
.f3dp-stl-splitter__results {
  min-width: 0;
}

.f3dp-stl-splitter__viewer-panel {
  background: transparent;
  border: 0;
  box-shadow: none;
  padding: 0;
}

.f3dp-stl-splitter__results {
  min-height: 0;
  overflow: hidden;
}

.f3dp-stl-splitter__sidebar-section {
  display: grid;
  gap: 14px;
}

.f3dp-stl-splitter__sidebar-section + .f3dp-stl-splitter__sidebar-section,
.f3dp-stl-splitter__actions + .f3dp-stl-splitter__sidebar-section {
  border-top: 1px solid var(--f3dp-stl-splitter-border);
  padding-top: 16px;
}

.f3dp-stl-splitter--shared-source .f3dp-stl-splitter__upload-panel,
.f3dp-stl-splitter--shared-source .f3dp-stl-splitter__controls,
.f3dp-stl-splitter--shared-source .f3dp-stl-splitter__options-panel,
.f3dp-stl-splitter--shared-source .f3dp-stl-splitter__actions {
  display: none;
}

.f3dp-stl-splitter--shared-source .f3dp-stl-splitter__results {
  border-top: 0;
  padding-top: 0;
}

.f3dp-stl-splitter__section-head {
  align-items: flex-start;
  display: flex;
  gap: 12px;
  justify-content: space-between;
  min-width: 0;
}

.f3dp-stl-splitter__section-head .f3dp-stl-splitter__panel-title {
  font-size: 18px;
  line-height: 1.25;
}

.f3dp-stl-splitter__upload-button {
  flex: 0 0 auto;
  min-height: 38px;
  min-width: 138px;
  padding: 9px 14px;
  white-space: nowrap;
}

.f3dp-stl-splitter__visually-hidden {
  border: 0;
  clip: rect(0, 0, 0, 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.f3dp-stl-splitter__panel-head {
  align-items: center;
  border-bottom: 1px solid var(--f3dp-stl-splitter-border);
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 18px;
}

.f3dp-stl-splitter__upload-panel .f3dp-stl-splitter__panel-head,
.f3dp-stl-splitter__controls .f3dp-stl-splitter__panel-head,
.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__panel-head {
  flex: 0 0 auto;
  margin-bottom: 16px;
  min-height: 0;
  padding-bottom: 14px;
}

.f3dp-stl-splitter__panel-title {
  color: var(--f3dp-stl-splitter-text);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.25;
  margin: 0;
}

.f3dp-stl-splitter__upload-panel .f3dp-stl-splitter__panel-title,
.f3dp-stl-splitter__controls .f3dp-stl-splitter__panel-title,
.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__panel-title,
.f3dp-stl-splitter__results .f3dp-stl-splitter__panel-title {
  font-size: 22px;
}

.f3dp-stl-splitter__upload-text,
.f3dp-stl-splitter__progress-text {
  color: var(--f3dp-stl-splitter-muted);
  font-size: 14px;
  line-height: 1.7;
  margin: 8px 0 0;
}

.f3dp-stl-splitter__viewer-head-actions {
  align-items: center;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.f3dp-stl-splitter__viewer-upload {
  align-items: stretch;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(230px, 0.55fr) minmax(0, 1.45fr);
  margin-bottom: 14px;
}

.f3dp-stl-splitter__upload-box {
  align-items: center;
  background: var(--f3dp-stl-splitter-soft);
  border: 1px dashed #cbd5df;
  border-radius: 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 14px;
}

.f3dp-stl-splitter__upload-box[data-dragging="true"] {
  background: rgba(255, 208, 44, 0.16);
  border-color: var(--f3dp-stl-splitter-yellow);
}

.f3dp-stl-splitter__file-input {
  height: 1px;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  width: 1px;
}

.f3dp-stl-splitter__button {
  align-items: center;
  appearance: none;
  background: var(--f3dp-stl-splitter-yellow);
  border: 0;
  border-radius: 4px;
  color: var(--f3dp-stl-splitter-text);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  gap: 8px;
  justify-content: center;
  line-height: 1.2;
  min-height: 42px;
  padding: 10px 16px;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
  white-space: normal;
}

.f3dp-stl-splitter__panel-head .f3dp-stl-splitter__button {
  flex: 0 0 auto;
  min-width: 130px;
}

.f3dp-stl-splitter__button:hover {
  background: var(--f3dp-stl-splitter-yellow-hover);
  color: var(--f3dp-stl-splitter-text);
  transform: translateY(-1px);
}

.f3dp-stl-splitter__button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.f3dp-stl-splitter__button--loading {
  opacity: 1;
}

.f3dp-stl-splitter__button-spinner {
  animation: f3dp-stl-splitter-spin 0.72s linear infinite;
  border: 3px solid rgba(16, 36, 55, 0.24);
  border-radius: 50%;
  border-top-color: currentColor;
  display: inline-block;
  height: 20px;
  width: 20px;
}

@keyframes f3dp-stl-splitter-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes f3dp-stl-splitter-preset-flash {
  0%,
  100% {
    border-color: #d9e0e7;
    box-shadow: none;
  }

  24%,
  72% {
    border-color: var(--f3dp-stl-splitter-yellow);
    box-shadow: 0 0 0 4px rgba(255, 208, 44, 0.24);
  }
}

.f3dp-stl-splitter__button--secondary {
  background: var(--f3dp-stl-splitter-dark);
  color: #ffffff;
}

.f3dp-stl-splitter__button--secondary:hover {
  background: var(--f3dp-stl-splitter-dark-2);
  color: #ffffff;
}

.f3dp-stl-splitter__button--ghost {
  background: #ffffff;
  border: 1px solid var(--f3dp-stl-splitter-border);
  color: var(--f3dp-stl-splitter-text);
}

.f3dp-stl-splitter__button--ghost:hover {
  background: var(--f3dp-stl-splitter-soft);
}

.f3dp-stl-splitter__file-meta {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
}

.f3dp-stl-splitter__file-meta-item {
  display: grid;
  gap: 6px;
  grid-template-columns: 1fr;
  min-width: 0;
  padding: 0;
}

.f3dp-stl-splitter__file-meta-item dt {
  color: var(--f3dp-stl-splitter-muted);
  font-size: 11px;
  font-weight: 800;
  line-height: 1.35;
  margin: 0;
  text-transform: uppercase;
}

.f3dp-stl-splitter__file-meta-item dd {
  color: var(--f3dp-stl-splitter-text);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.25;
  margin: 0;
  overflow-wrap: anywhere;
  white-space: pre-line;
}

.f3dp-stl-splitter__viewer {
  background: #0f1320;
  border: 0;
  border-radius: 4px;
  height: clamp(560px, calc(100vh - 180px), 780px);
  overflow: hidden;
  position: relative;
}

.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__viewer-panel {
  background: #0f1320;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  height: 100vh;
  height: 100dvh;
  inset: 0;
  padding: 0;
  position: fixed;
  width: 100vw;
  z-index: 2147483000;
}

.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__viewer {
  border-radius: 0;
  height: 100vh;
  height: 100dvh;
}

.f3dp-stl-splitter__viewer canvas {
  display: block;
  height: 100%;
  width: 100%;
}

.f3dp-stl-splitter__fullscreen-button,
.f3dp-stl-splitter__share-button,
.f3dp-stl-splitter__share-delete-button {
  align-items: center;
  appearance: none;
  background: rgba(16, 36, 55, 0.88);
  border: 1px solid rgba(219, 229, 239, 0.28);
  border-radius: 4px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
  color: #ffffff;
  cursor: pointer;
  display: inline-flex;
  height: 42px;
  justify-content: center;
  padding: 0;
  position: absolute;
  right: 14px;
  top: 14px;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
  width: 42px;
  z-index: 8;
}

.f3dp-stl-splitter__share-button {
  right: 118px;
}

.f3dp-stl-splitter__share-delete-button {
  bottom: 14px;
  right: 14px;
  top: auto;
}

.f3dp-stl-splitter__merge-button {
  align-items: center;
  appearance: none;
  background: var(--f3dp-stl-splitter-yellow);
  border: 1px solid rgba(255, 208, 44, 0.96);
  border-radius: 4px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
  color: var(--f3dp-stl-splitter-text);
  cursor: pointer;
  display: inline-flex;
  font-size: 13px;
  font-weight: 900;
  height: 42px;
  justify-content: center;
  left: 50%;
  min-width: 178px;
  padding: 0 18px;
  position: absolute;
  top: 14px;
  transform: translateX(-50%);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
  z-index: 8;
}

.f3dp-stl-splitter__merge-button:hover:not(:disabled) {
  background: #ffe06a;
  border-color: #ffe06a;
  transform: translate(-50%, -1px);
}

.f3dp-stl-splitter__merge-button:focus-visible {
  outline: 3px solid rgba(255, 208, 44, 0.45);
  outline-offset: 2px;
}

.f3dp-stl-splitter__merge-button:disabled {
  cursor: not-allowed;
  opacity: 0.72;
}

.f3dp-stl-splitter__merge-button[hidden] {
  display: none;
}

.f3dp-stl-splitter__share-button:disabled {
  cursor: wait;
  opacity: 0.82;
}

.f3dp-stl-splitter__share-delete-button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.f3dp-stl-splitter__share-button--loading {
  animation: f3dp-stl-splitter-share-pulse 0.9s ease-in-out infinite alternate;
}

.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__fullscreen-button,
.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__share-button,
.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__share-delete-button {
  height: 44px;
  right: 28px;
  top: 18px;
  width: 44px;
}

.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__share-button {
  right: 84px;
}

.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__share-delete-button {
  bottom: 18px;
  right: 28px;
  top: auto;
}

.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__merge-button {
  height: 44px;
  top: 18px;
}

.f3dp-stl-splitter__fullscreen-parts {
  background: rgba(244, 247, 249, 0.96);
  border: 1px solid rgba(219, 229, 239, 0.78);
  border-radius: 4px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.32);
  color: var(--f3dp-stl-splitter-text);
  display: none;
  gap: 12px;
  left: 14px;
  max-height: calc(100vh - 28px);
  max-height: calc(100dvh - 28px);
  min-height: 0;
  overflow: hidden;
  padding: 12px;
  position: absolute;
  top: 14px;
  width: min(340px, calc(100vw - 86px));
  z-index: 7;
}

.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__fullscreen-parts {
  display: grid;
}

.f3dp-stl-splitter__fullscreen-parts-head {
  align-items: center;
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr) auto;
  min-width: 0;
}

.f3dp-stl-splitter__fullscreen-parts-head h2 {
  color: var(--f3dp-stl-splitter-text);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.2;
  margin: 0;
}

.f3dp-stl-splitter__fullscreen-check {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--f3dp-stl-splitter-border);
  border-radius: 4px;
  padding: 9px 10px;
}

.f3dp-stl-splitter__result-check {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--f3dp-stl-splitter-border);
  border-radius: 4px;
  display: none;
  margin: 0 0 10px;
  padding: 9px 10px;
}

.f3dp-stl-splitter--shared-source .f3dp-stl-splitter__result-check {
  display: none;
}

.f3dp-stl-splitter__viewer-cut-lines {
  align-items: center;
  background: rgba(16, 36, 55, 0.88);
  border: 1px solid rgba(219, 229, 239, 0.28);
  border-radius: 4px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
  color: #ffffff;
  cursor: pointer;
  display: inline-flex;
  height: 42px;
  justify-content: center;
  padding: 0;
  position: absolute;
  right: 66px;
  top: 14px;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
  width: 42px;
  z-index: 8;
}

.f3dp-stl-splitter__viewer-cut-lines[hidden],
.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__viewer-cut-lines {
  display: none;
}

.f3dp-stl-splitter__viewer-cut-lines input {
  height: 1px;
  margin: 0;
  opacity: 0;
  position: absolute;
  width: 1px;
}

.f3dp-stl-splitter__viewer-cut-lines-icon {
  display: inline-flex;
  height: 22px;
  position: relative;
  width: 22px;
}

.f3dp-stl-splitter__viewer-cut-lines-icon svg {
  display: block;
  fill: none;
  height: 100%;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
  width: 100%;
}

.f3dp-stl-splitter__viewer-cut-lines-icon::after {
  background: currentColor;
  border-radius: 2px;
  content: "";
  height: 2px;
  left: 1px;
  opacity: 0;
  position: absolute;
  top: 50%;
  transform: rotate(-42deg);
  transition: opacity 0.2s ease;
  width: 22px;
}

.f3dp-stl-splitter__viewer-cut-lines input:checked + .f3dp-stl-splitter__viewer-cut-lines-icon {
  color: var(--f3dp-stl-splitter-yellow);
}

.f3dp-stl-splitter__viewer-cut-lines input:not(:checked) + .f3dp-stl-splitter__viewer-cut-lines-icon {
  opacity: 0.72;
}

.f3dp-stl-splitter__viewer-cut-lines input:not(:checked) + .f3dp-stl-splitter__viewer-cut-lines-icon::after {
  opacity: 1;
}

.f3dp-stl-splitter__viewer-cut-lines:hover {
  background: rgba(255, 208, 44, 0.96);
  border-color: rgba(255, 208, 44, 0.96);
  color: var(--f3dp-stl-splitter-text);
  transform: translateY(-1px);
}

.f3dp-stl-splitter__viewer-cut-lines:focus-within {
  outline: 3px solid rgba(255, 208, 44, 0.45);
  outline-offset: 2px;
}

.f3dp-stl-splitter__result-search,
.f3dp-stl-splitter__fullscreen-search {
  position: relative;
}

.f3dp-stl-splitter__result-search {
  margin: 0 0 10px;
}

.f3dp-stl-splitter__result-search input,
.f3dp-stl-splitter__fullscreen-search input {
  appearance: none;
  background: #ffffff;
  border: 1px solid var(--f3dp-stl-splitter-border);
  border-radius: 4px;
  color: var(--f3dp-stl-splitter-text);
  font: inherit;
  font-size: 13px;
  font-weight: 750;
  height: 40px;
  outline: 0;
  padding: 0 42px 0 12px;
  width: 100%;
}

.f3dp-stl-splitter__result-search input:focus,
.f3dp-stl-splitter__fullscreen-search input:focus {
  border-color: var(--f3dp-stl-splitter-yellow);
  box-shadow: 0 0 0 3px rgba(255, 208, 44, 0.22);
}

.f3dp-stl-splitter__result-search input:disabled,
.f3dp-stl-splitter__fullscreen-search input:disabled {
  background: #edf2f7;
  color: #7a8797;
  cursor: not-allowed;
}

.f3dp-stl-splitter__result-search input::-webkit-search-decoration,
.f3dp-stl-splitter__result-search input::-webkit-search-cancel-button,
.f3dp-stl-splitter__result-search input::-webkit-search-results-button,
.f3dp-stl-splitter__result-search input::-webkit-search-results-decoration,
.f3dp-stl-splitter__fullscreen-search input::-webkit-search-decoration,
.f3dp-stl-splitter__fullscreen-search input::-webkit-search-cancel-button,
.f3dp-stl-splitter__fullscreen-search input::-webkit-search-results-button,
.f3dp-stl-splitter__fullscreen-search input::-webkit-search-results-decoration {
  -webkit-appearance: none;
  appearance: none;
  display: none;
}

.f3dp-stl-splitter__result-search-clear,
.f3dp-stl-splitter__fullscreen-search-clear {
  align-items: center;
  appearance: none;
  background: transparent;
  border: 0;
  color: #142637;
  cursor: pointer;
  display: inline-flex;
  height: 40px;
  justify-content: center;
  padding: 0;
  position: absolute;
  right: 0;
  top: 0;
  width: 40px;
}

.f3dp-stl-splitter__result-search-clear[hidden],
.f3dp-stl-splitter__fullscreen-search-clear[hidden] {
  display: none;
}

.f3dp-stl-splitter__result-search-clear svg,
.f3dp-stl-splitter__fullscreen-search-clear svg {
  fill: none;
  height: 17px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.4;
  width: 17px;
}

.f3dp-stl-splitter__result-search-clear:hover,
.f3dp-stl-splitter__fullscreen-search-clear:hover {
  color: var(--f3dp-stl-splitter-orange-dark);
}

.f3dp-stl-splitter__result-search-empty,
.f3dp-stl-splitter__fullscreen-empty {
  background: rgba(255, 255, 255, 0.74);
  border: 1px dashed var(--f3dp-stl-splitter-border);
  border-radius: 4px;
  color: #5f6d7b;
  font-size: 13px;
  font-weight: 800;
  padding: 14px 10px;
  text-align: center;
}

.f3dp-stl-splitter__result-search-empty {
  margin: 0 0 10px;
}

.f3dp-stl-splitter__result-search-empty[hidden],
.f3dp-stl-splitter__fullscreen-empty[hidden],
.f3dp-stl-splitter__result-card--search-hidden {
  display: none;
}

.f3dp-stl-splitter__fullscreen-result-list {
  max-height: min(520px, calc(100vh - 150px));
  max-height: min(520px, calc(100dvh - 150px));
  overflow: auto;
  overscroll-behavior: contain;
}

.f3dp-stl-splitter__fullscreen-result-list .f3dp-stl-splitter__result-card {
  background: rgba(255, 255, 255, 0.94);
}

.f3dp-stl-splitter__fullscreen-result-list .f3dp-stl-splitter__result-card--active {
  background: rgba(255, 208, 44, 0.2);
}

.f3dp-stl-splitter__fullscreen-result-list .f3dp-stl-splitter__result-name {
  font-size: 12px;
}

.f3dp-stl-splitter__fullscreen-result-list .f3dp-stl-splitter__visibility-button,
.f3dp-stl-splitter__fullscreen-result-list .f3dp-stl-splitter__download-button {
  flex-basis: 32px;
  height: 32px;
  min-height: 32px;
  width: 32px;
}

.f3dp-stl-splitter__fullscreen-button:hover,
.f3dp-stl-splitter__share-button:hover,
.f3dp-stl-splitter__share-delete-button:hover {
  background: rgba(255, 208, 44, 0.96);
  border-color: rgba(255, 208, 44, 0.96);
  color: var(--f3dp-stl-splitter-text);
  transform: translateY(-1px);
}

.f3dp-stl-splitter__fullscreen-button:focus-visible,
.f3dp-stl-splitter__share-button:focus-visible,
.f3dp-stl-splitter__share-delete-button:focus-visible {
  outline: 3px solid rgba(255, 208, 44, 0.45);
  outline-offset: 2px;
}

.f3dp-stl-splitter__fullscreen-icon,
.f3dp-stl-splitter__share-icon,
.f3dp-stl-splitter__share-delete-icon {
  display: inline-flex;
  height: 20px;
  width: 20px;
}

.f3dp-stl-splitter__fullscreen-icon svg,
.f3dp-stl-splitter__share-icon svg,
.f3dp-stl-splitter__share-delete-icon svg {
  display: block;
  fill: none;
  height: 100%;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.15;
  width: 100%;
}

.f3dp-stl-splitter__fullscreen-icon--collapse,
.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__fullscreen-icon--expand {
  display: none;
}

.f3dp-stl-splitter--viewer-fullscreen .f3dp-stl-splitter__fullscreen-icon--collapse {
  display: inline-flex;
}

@keyframes f3dp-stl-splitter-share-pulse {
  from {
    border-color: rgba(219, 229, 239, 0.28);
  }
  to {
    border-color: rgba(255, 208, 44, 0.86);
  }
}

.f3dp-stl-splitter__viewer-empty {
  color: #dbe5ef;
  display: grid;
  inset: 0;
  padding: 24px;
  place-items: center;
  pointer-events: none;
  position: absolute;
  text-align: center;
}

.f3dp-stl-splitter__viewer-empty[hidden],
.f3dp-stl-splitter__viewer-tooltip[hidden] {
  display: none;
}

.f3dp-stl-splitter__viewer-tooltip {
  align-items: center;
  background: rgba(16, 36, 55, 0.94);
  border: 1px solid rgba(255, 208, 44, 0.58);
  border-radius: 4px;
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.32);
  color: #ffffff;
  display: inline-flex;
  font-size: 13px;
  font-weight: 800;
  gap: 9px;
  left: 0;
  line-height: 1.25;
  max-width: min(340px, calc(100% - 24px));
  overflow-wrap: anywhere;
  padding: 10px 12px;
  pointer-events: none;
  position: absolute;
  top: 0;
  z-index: 5;
}

.f3dp-stl-splitter__viewer-tooltip .f3dp-stl-splitter__download-icon {
  color: var(--f3dp-stl-splitter-yellow);
  flex: 0 0 auto;
}

.f3dp-stl-splitter__controls,
.f3dp-stl-splitter__options-panel {
  background: var(--f3dp-stl-splitter-card);
  border-color: var(--f3dp-stl-splitter-border);
  color: var(--f3dp-stl-splitter-text);
  min-width: 0;
}

.f3dp-stl-splitter__controls .f3dp-stl-splitter__panel-head,
.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__panel-head {
  border-bottom-color: var(--f3dp-stl-splitter-border);
}

.f3dp-stl-splitter__controls .f3dp-stl-splitter__panel-title,
.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__panel-title {
  color: var(--f3dp-stl-splitter-text);
}

.f3dp-stl-splitter__controls .f3dp-stl-splitter__field,
.f3dp-stl-splitter__controls .f3dp-stl-splitter__check,
.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__check {
  color: var(--f3dp-stl-splitter-text);
}

.f3dp-stl-splitter__controls .f3dp-stl-splitter__field > span,
.f3dp-stl-splitter__controls .f3dp-stl-splitter__field-label,
.f3dp-stl-splitter__controls .f3dp-stl-splitter__range-head {
  color: var(--f3dp-stl-splitter-text);
}

.f3dp-stl-splitter__fields {
  display: grid;
  flex: 0 0 auto;
  gap: 16px;
  margin-top: 0;
}

.f3dp-stl-splitter__dimension-row {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.f3dp-stl-splitter__sidebar .f3dp-stl-splitter__dimension-row {
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.f3dp-stl-splitter__field {
  color: var(--f3dp-stl-splitter-text);
  display: grid;
  font-size: 13px;
  font-weight: 800;
  gap: 8px;
  line-height: 1.25;
}

.f3dp-stl-splitter__input,
.f3dp-stl-splitter__select {
  background: #ffffff;
  border: 1px solid #d9e0e7;
  border-radius: 4px;
  color: var(--f3dp-stl-splitter-text);
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  height: 44px;
  line-height: 44px;
  outline: none;
  padding: 0 12px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
}

.f3dp-stl-splitter__select {
  cursor: pointer;
  line-height: 42px;
  padding-right: 36px;
}

.f3dp-stl-splitter__input:focus,
.f3dp-stl-splitter__select:focus {
  border-color: var(--f3dp-stl-splitter-yellow);
  box-shadow: 0 0 0 4px rgba(255, 208, 44, 0.24);
}

.f3dp-stl-splitter__input--preset-updated {
  animation: f3dp-stl-splitter-preset-flash 0.72s ease both;
}

.f3dp-stl-splitter__range-head {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.f3dp-stl-splitter__range-head output {
  color: var(--f3dp-stl-splitter-orange);
  flex: 0 0 auto;
  font-weight: 800;
}

.f3dp-stl-splitter__range {
  accent-color: var(--f3dp-stl-splitter-yellow);
  cursor: pointer;
  width: 100%;
}

.f3dp-stl-splitter__options-body {
  display: grid;
  flex: 0 0 auto;
  gap: 18px;
}

.f3dp-stl-splitter__option-group {
  display: grid;
  gap: 10px;
}

.f3dp-stl-splitter__option-group + .f3dp-stl-splitter__option-group {
  border-top: 1px solid var(--f3dp-stl-splitter-border);
  padding-top: 18px;
}

.f3dp-stl-splitter__option-title {
  color: var(--f3dp-stl-splitter-text);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.25;
}

.f3dp-stl-splitter__check {
  align-items: center;
  display: flex;
  font-size: 14px;
  font-weight: 800;
  gap: 10px;
  line-height: 1.35;
}

.f3dp-stl-splitter__check input {
  accent-color: var(--f3dp-stl-splitter-yellow);
  height: 18px;
  margin: 0;
  width: 18px;
}

.f3dp-stl-splitter__mark-mode {
  background: #f8fafc;
  border: 1px solid var(--f3dp-stl-splitter-border);
  border-radius: 4px;
  display: grid;
  gap: 10px;
  padding: 10px;
}

.f3dp-stl-splitter__select-field {
  color: var(--f3dp-stl-splitter-text);
  display: grid;
  font-size: 13px;
  font-weight: 800;
  gap: 7px;
  line-height: 1.25;
}

.f3dp-stl-splitter__select-field > span {
  color: var(--f3dp-stl-splitter-muted);
  font-size: 12px;
  letter-spacing: 0;
  text-transform: uppercase;
}

.f3dp-stl-splitter__select-field select {
  appearance: none;
  background: #ffffff;
  border: 1px solid #d9e0e7;
  border-radius: 4px;
  color: var(--f3dp-stl-splitter-text);
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  min-height: 42px;
  outline: 0;
  padding: 0 12px;
  width: 100%;
}

.f3dp-stl-splitter__select-field select:focus {
  border-color: var(--f3dp-stl-splitter-yellow);
  box-shadow: 0 0 0 3px rgba(255, 208, 44, 0.24);
}

.f3dp-stl-splitter__select-field select:disabled {
  background: #edf2f7;
  color: #7a8797;
  cursor: not-allowed;
}

.f3dp-stl-splitter__select-field .nice-select {
  float: none;
  height: 42px;
  line-height: 40px;
  margin: 0;
  min-height: 42px;
  padding-left: 12px;
  padding-right: 34px;
  width: 100%;
}

.f3dp-stl-splitter__select-field .nice-select .current {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.f3dp-stl-splitter__select-field .nice-select .list {
  border-radius: 4px;
  margin-top: 5px;
  max-height: 220px;
  overflow: auto;
  width: 100%;
}

.f3dp-stl-splitter__select-field .nice-select .option {
  color: var(--f3dp-stl-splitter-text);
  font-size: 13px;
  font-weight: 800;
  min-height: 38px;
  white-space: normal;
}

.f3dp-stl-splitter__select-field .nice-select .option:hover,
.f3dp-stl-splitter__select-field .nice-select .option.focus,
.f3dp-stl-splitter__select-field .nice-select .option.selected.focus {
  background: rgba(255, 208, 44, 0.26);
}

.f3dp-stl-splitter__facade-button {
  justify-content: center;
  min-height: 40px;
  width: 100%;
}

.f3dp-stl-splitter__facade-button:disabled {
  background: #edf2f7;
  color: #7a8797;
  cursor: not-allowed;
}

.f3dp-stl-splitter__mark-mode small {
  color: var(--f3dp-stl-splitter-muted);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.35;
}

.f3dp-stl-splitter__rotate-tools {
  gap: 12px;
}

.f3dp-stl-splitter__rotate-head {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.f3dp-stl-splitter__rotate-table {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.f3dp-stl-splitter__rotate-axis-card {
  align-items: center;
  background: var(--f3dp-stl-splitter-axis-bg, #f7fafc);
  border: 1px solid var(--f3dp-stl-splitter-axis-border, var(--f3dp-stl-splitter-border));
  border-radius: 4px;
  /* box-shadow: inset 3px 0 0 var(--f3dp-stl-splitter-axis-color, transparent); */
  display: grid;
  gap: 8px;
  justify-items: center;
  min-height: 76px;
  padding: 10px 8px 9px;
}

.f3dp-stl-splitter__rotate-axis-card:nth-child(1) {
  --f3dp-stl-splitter-axis-bg: #fff5f5;
  --f3dp-stl-splitter-axis-border: #fecaca;
  --f3dp-stl-splitter-axis-color: #ef4444;
}

.f3dp-stl-splitter__rotate-axis-card:nth-child(2) {
  --f3dp-stl-splitter-axis-bg: #f0fdf4;
  --f3dp-stl-splitter-axis-border: #bbf7d0;
  --f3dp-stl-splitter-axis-color: #16a34a;
}

.f3dp-stl-splitter__rotate-axis-card:nth-child(3) {
  --f3dp-stl-splitter-axis-bg: #eff6ff;
  --f3dp-stl-splitter-axis-border: #bfdbfe;
  --f3dp-stl-splitter-axis-color: #2563eb;
}

.f3dp-stl-splitter__axis-label {
  align-items: center;
  color: var(--f3dp-stl-splitter-axis-color, var(--f3dp-stl-splitter-text));
  display: inline-flex;
  font-size: 13px;
  font-weight: 800;
  justify-content: center;
  line-height: 1;
  min-height: 15px;
}

.f3dp-stl-splitter__rotate-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.f3dp-stl-splitter__rotate-actions .f3dp-stl-splitter__rotate-button {
  background: #ffffff;
  border: 1px solid var(--f3dp-stl-splitter-axis-border, var(--f3dp-stl-splitter-border));
  border-radius: 50%;
  color: var(--f3dp-stl-splitter-axis-color, var(--f3dp-stl-splitter-text));
  flex: 0 0 32px;
  height: 32px;
  min-height: 32px;
  opacity: 1;
  padding: 0;
  width: 32px;
}

.f3dp-stl-splitter__rotate-button:hover:not(:disabled) {
  background: var(--f3dp-stl-splitter-axis-color, var(--f3dp-stl-splitter-yellow));
  border-color: var(--f3dp-stl-splitter-axis-color, var(--f3dp-stl-splitter-yellow));
  color: #ffffff;
}

.f3dp-stl-splitter__rotate-icon {
  display: block;
  height: 19px;
  width: 19px;
}

.f3dp-stl-splitter__rotate-icon svg {
  display: block;
  height: 100%;
  overflow: visible;
  width: 100%;
}

.f3dp-stl-splitter__rotate-icon path {
  fill: currentColor;
}

.f3dp-stl-splitter__rotate-button--negative .f3dp-stl-splitter__rotate-icon svg {
  transform: scaleX(-1);
}

.f3dp-stl-splitter__actions {
  background: var(--f3dp-stl-splitter-card);
  border-top: 1px solid var(--f3dp-stl-splitter-border);
  display: grid;
  gap: 10px;
  margin-top: 0;
  padding-top: 14px;
}

.f3dp-stl-splitter__results-title-row {
  align-items: center;
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr) auto;
  width: 100%;
}

.f3dp-stl-splitter__results-head {
  display: block;
}

.f3dp-stl-splitter__results-head > div {
  min-width: 0;
  width: 100%;
}

.f3dp-stl-splitter__result-actions {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 10px;
}

.f3dp-stl-splitter__assembly-options {
  display: contents;
}

.f3dp-stl-splitter__parts-count {
  align-items: center;
  background: var(--f3dp-stl-splitter-soft);
  border: 1px solid var(--f3dp-stl-splitter-border);
  border-radius: 4px;
  color: var(--f3dp-stl-splitter-muted);
  display: inline-flex;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.2;
  min-height: 26px;
  padding: 4px 8px;
  white-space: nowrap;
}

.f3dp-stl-splitter__controls .f3dp-stl-splitter__button--secondary,
.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__button--secondary {
  background: var(--f3dp-stl-splitter-dark);
  border: 0;
  color: #ffffff;
}

.f3dp-stl-splitter__controls .f3dp-stl-splitter__button--secondary:hover,
.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__button--secondary:hover {
  background: var(--f3dp-stl-splitter-dark-2);
}

.f3dp-stl-splitter__controls .f3dp-stl-splitter__button--ghost,
.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__button--ghost {
  background: #ffffff;
  border: 1px solid var(--f3dp-stl-splitter-border);
  color: var(--f3dp-stl-splitter-text);
}

.f3dp-stl-splitter__controls .f3dp-stl-splitter__button--ghost:hover,
.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__button--ghost:hover {
  background: var(--f3dp-stl-splitter-soft);
}

.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__rotate-actions .f3dp-stl-splitter__rotate-button {
  border-color: var(--f3dp-stl-splitter-axis-border, var(--f3dp-stl-splitter-border));
  color: var(--f3dp-stl-splitter-axis-color, var(--f3dp-stl-splitter-text));
}

.f3dp-stl-splitter__options-panel .f3dp-stl-splitter__rotate-actions .f3dp-stl-splitter__rotate-button:hover:not(:disabled) {
  background: var(--f3dp-stl-splitter-axis-color, var(--f3dp-stl-splitter-yellow));
  border-color: var(--f3dp-stl-splitter-axis-color, var(--f3dp-stl-splitter-yellow));
  color: #ffffff;
}

.f3dp-stl-splitter__runtime-notice {
  background: var(--f3dp-stl-splitter-soft);
  border: 1px solid var(--f3dp-stl-splitter-border);
  border-radius: 4px;
  color: var(--f3dp-stl-splitter-muted);
  font-size: 13px;
  line-height: 1.45;
  padding: 12px;
}

.f3dp-stl-splitter__runtime-notice[data-kind="warning"] {
  background: #fff8d8;
  border-color: var(--f3dp-stl-splitter-yellow);
  color: var(--f3dp-stl-splitter-warning);
}

.f3dp-stl-splitter__runtime-notice[data-kind="error"] {
  background: #fef2f2;
  border-color: #fecaca;
  color: var(--f3dp-stl-splitter-danger);
}

.f3dp-stl-splitter__result-list {
  display: grid;
  flex: 1 1 auto;
  gap: 0;
  grid-template-columns: 1fr;
  list-style: none;
  margin: 0;
  min-height: 0;
  padding: 0;
}

.f3dp-stl-splitter__results .f3dp-stl-splitter__button {
  width: 100%;
}

.f3dp-stl-splitter__result-card {
  align-items: center;
  background: var(--f3dp-stl-splitter-soft);
  border: 1px solid var(--f3dp-stl-splitter-border);
  border-bottom: 0;
  cursor: pointer;
  display: flex;
  gap: 8px;
  justify-content: space-between;
  min-width: 0;
  padding: 10px;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}



.f3dp-stl-splitter__result-card:hover {
  background: #f8fafc;
  border-color: #d8e0e8;
  transform: none;
}

.f3dp-stl-splitter__result-card--active {
  background: rgba(255, 208, 44, 0.16);
  border-color: var(--f3dp-stl-splitter-yellow);
  transform: none;
}

.f3dp-stl-splitter__result-card--merge-selected {
  background: rgba(255, 208, 44, 0.18);
  border-color: rgba(255, 208, 44, 0.92);
  box-shadow: inset 4px 0 0 var(--f3dp-stl-splitter-yellow);
}

.f3dp-stl-splitter__result-card--merged {
  box-shadow: inset 4px 0 0 rgba(255, 128, 0, 0.42);
}

.f3dp-stl-splitter__result-card--hidden {
  background: #f8fafc;
  border-color: var(--f3dp-stl-splitter-border);
}

.f3dp-stl-splitter__result-card--hidden:hover {
  background: #f1f5f9;
  border-color: #d8e0e8;
}

.f3dp-stl-splitter__result-name {
  color: var(--f3dp-stl-splitter-text);
  flex: 1 1 auto;
  font-size: 13px;
  font-weight: 800;
  line-height: 1.35;
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
}

.f3dp-stl-splitter__result-card--active .f3dp-stl-splitter__result-name {
  color: var(--f3dp-stl-splitter-orange-dark);
}

.f3dp-stl-splitter__result-card--hidden .f3dp-stl-splitter__result-name {
  color: #7a8797;
  text-decoration: line-through;
}

.f3dp-stl-splitter__result-loading {
  color: #5f6d7b;
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.f3dp-stl-splitter__result-controls {
  align-items: center;
  display: flex;
  flex: 0 0 auto;
  gap: 6px;
}

.f3dp-stl-splitter__visibility-button,
.f3dp-stl-splitter__download-button {
  flex: 0 0 34px;
  height: 34px;
  justify-content: center;
  min-height: 34px;
  padding: 7px;
  width: 34px;
}

.f3dp-stl-splitter__visibility-button {
  background: #fff;
}

.f3dp-stl-splitter__result-card--hidden .f3dp-stl-splitter__visibility-button {
  background: #e9eef4;
  color: #5f6d7b;
}

.f3dp-stl-splitter__download-icon,
.f3dp-stl-splitter__visibility-icon {
  align-items: center;
  color: currentColor;
  display: inline-flex;
  height: 18px;
  justify-content: center;
  width: 18px;
}

.f3dp-stl-splitter__visibility-icon--hidden {
  display: none;
}

.f3dp-stl-splitter__result-card--hidden .f3dp-stl-splitter__visibility-icon--visible {
  display: none;
}

.f3dp-stl-splitter__result-card--hidden .f3dp-stl-splitter__visibility-icon--hidden {
  display: inline-flex;
}

.f3dp-stl-splitter__download-icon svg,
.f3dp-stl-splitter__visibility-icon svg {
  fill: none;
  height: 18px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.2;
  width: 18px;
}

.f3dp-stl-splitter__result-card--active .f3dp-stl-splitter__download-button {
  background: var(--f3dp-stl-splitter-yellow);
  color: var(--f3dp-stl-splitter-text);
}

.calculator-article {
  background: var(--ztc-bg-bg-1);
  padding-top: 0;
}

.calculator-article-card {
  background: var(--ztc-text-text-1);
  border: 1px solid var(--ztc-border-border-1);
  border-radius: 4px;
  box-shadow: 0 18px 40px rgba(20, 38, 55, 0.08);
  padding: 40px;
}

.calculator-article-section,
.calculator-article-grid,
.calculator-faq {
  margin-top: 28px;
}

.calculator-article-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.calculator-article h3 {
  color: var(--ztc-text-text-5);
  font-size: 24px;
  font-weight: var(--ztc-weight-bold);
  line-height: 1.3;
  margin: 0 0 14px;
}

.calculator-article p,
.calculator-article li {
  color: var(--ztc-text-text-6);
  font-family: var(--ztc-family-font1);
  font-size: var(--ztc-font-size-font-s16);
  font-weight: var(--ztc-weight-medium);
  line-height: 1.75;
}

.calculator-article p {
  margin: 0 0 14px;
}

.calculator-article p:last-child {
  margin-bottom: 0;
}

.calculator-article ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.calculator-article li {
  list-style: none;
  padding-left: 24px;
  position: relative;
}

.calculator-article li::before {
  background: var(--ztc-bg-bg-3);
  border-radius: 50%;
  content: "";
  height: 8px;
  left: 0;
  position: absolute;
  top: 12px;
  width: 8px;
}

.calculator-formula {
  background: var(--ztc-text-text-5);
  border-left: 4px solid var(--ztc-bg-bg-3);
  border-radius: 4px;
  color: var(--ztc-text-text-1);
  font-family: var(--ztc-family-font1);
  font-size: var(--ztc-font-size-font-s18);
  font-weight: var(--ztc-weight-bold);
  line-height: 1.5;
  margin: 18px 0;
  padding: 18px 20px;
}

.calculator-faq h4 {
  color: var(--ztc-text-text-5);
  font-family: var(--ztc-family-font1);
  font-size: var(--ztc-font-size-font-s18);
  font-weight: var(--ztc-weight-bold);
  line-height: 1.4;
  margin: 22px 0 8px;
  scroll-margin-top: 120px;
}

@media (max-width: 1280px) {
  .f3dp-stl-splitter__layout {
    grid-template-columns: minmax(310px, 360px) minmax(0, 1fr);
  }

  .f3dp-stl-splitter__results {
    grid-column: 1 / -1;
    height: auto;
  }

}

@media (max-width: 1040px) {
  .f3dp-stl-splitter__layout {
    grid-template-columns: 1fr;
  }

  .f3dp-stl-splitter__viewer-panel,
  .f3dp-stl-splitter__results {
    grid-column: auto;
  }

  .f3dp-stl-splitter__results {
    height: auto;
  }

  .f3dp-stl-splitter__viewer-upload {
    grid-template-columns: minmax(240px, 0.65fr) minmax(0, 1.35fr);
  }

  .calculator-article-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .f3dp-stl-splitter {
    padding: 22px 14px 36px;
  }

  .f3dp-stl-splitter__panel {
    padding: 18px;
  }

  .f3dp-stl-splitter__upload-panel,
  .f3dp-stl-splitter__controls,
  .f3dp-stl-splitter__options-panel {
    min-height: 0;
  }

  .f3dp-stl-splitter__panel-head {
    align-items: stretch;
    flex-direction: column;
  }

  .f3dp-stl-splitter__viewer-upload,
  .f3dp-stl-splitter__dimension-row {
    grid-template-columns: 1fr;
  }

  .f3dp-stl-splitter__viewer-head-actions,
  .f3dp-stl-splitter__upload-box {
    align-items: stretch;
    flex-direction: column;
  }

  .f3dp-stl-splitter__button {
    width: 100%;
  }

  .f3dp-stl-splitter__merge-button {
    font-size: 12px;
    height: 38px;
    min-width: 150px;
    padding: 0 14px;
    top: 62px;
  }

  .f3dp-stl-splitter__section-head .f3dp-stl-splitter__upload-button {
    width: auto;
  }

  .f3dp-stl-splitter__result-card {
    align-items: stretch;
    flex-direction: column;
  }

  .f3dp-stl-splitter__result-controls {
    justify-content: flex-end;
  }

  .f3dp-stl-splitter__visibility-button,
  .f3dp-stl-splitter__download-button {
    width: 34px;
  }

  .f3dp-stl-splitter__viewer {
    height: 380px;
  }
}

@media (max-width: 575px) {
  .f3dp-stl-splitter__panel {
    padding: 16px;
  }

  .f3dp-stl-splitter__panel-title {
    font-size: 22px;
  }

  .calculator-article-card {
    padding: 22px;
  }
}