/* ============================================================
   semantic_segmentation_lab.css - 09 Semantic
   ============================================================ */
.semantic-real-stage canvas {
    pointer-events: none;
}

.semantic-real-stage[data-mode="mask"] img {
    opacity: 0;
}

.semantic-probe-card {
    position: absolute;
    left: var(--probe-left, 14px);
    top: var(--probe-top, auto);
    right: auto;
    bottom: auto;
    z-index: 8;
    display: grid;
    gap: 4px;
    width: min(240px, calc(100% - 28px));
    border: 1px solid rgba(191, 219, 254, 0.9);
    border-radius: 12px;
    padding: 11px 12px;
    color: #334155;
    font-size: 11px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 16px 30px rgba(15, 23, 42, 0.12);
}

.semantic-probe-card strong {
    color: #1d4ed8;
}

.semantic-probe-card span {
    overflow-wrap: anywhere;
}

.semantic-probe-card span i {
    display: inline-block;
    width: 9px;
    height: 9px;
    margin-right: 5px;
    border-radius: 2px;
    vertical-align: -1px;
}

.semantic-probe-bars {
    display: grid;
    gap: 4px;
    margin: 2px 0;
}

.semantic-detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
    gap: 10px;
    padding: 10px 12px;
    background: #ffffff;
}

.vision-panel-lite {
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 10px 11px;
    background: #fbfdff;
}

.vision-panel-lite h4 {
    margin: 0 0 8px;
    color: #1e3a8a;
    font-size: 12px;
    font-weight: 950;
}

.overview-legend {
    display: flex;
    align-content: flex-start;
    align-items: center;
    flex-wrap: wrap;
    gap: 5px 10px;
}

.overview-legend span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: #475569;
    font-size: 12px;
    font-weight: 700;
}

.overview-legend i {
    display: inline-block;
    width: 11px;
    height: 11px;
    flex: 0 0 auto;
    border-radius: 3px;
}

.overview-legend .is-muted {
    opacity: 0.45;
}

.semantic-ratio-list {
    display: grid;
    gap: 5px;
}

.semantic-ratio-list div {
    display: grid;
    grid-template-columns: 70px minmax(0, 1fr) 38px;
    align-items: center;
    gap: 6px;
    font-size: 10px;
}

.semantic-ratio-list span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: #475569;
}

.semantic-ratio-list i {
    width: 8px;
    height: 8px;
    border-radius: 2px;
}

.semantic-ratio-list b {
    height: 7px;
    overflow: hidden;
    border-radius: 999px;
    background: #e2e8f0;
}

.semantic-ratio-list em {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: #2563eb;
}

.semantic-ratio-list strong {
    color: #334155;
    text-align: right;
}

.semantic-tensor-flow {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 6px;
    border-top: 1px solid #e8eef6;
    padding: 10px 12px;
    background: #fbfdff;
}

.semantic-tensor-flow div {
    display: grid;
    gap: 2px;
    border: 1px solid #dbeafe;
    border-radius: 9px;
    padding: 7px 9px;
    background: #eff6ff;
}

.semantic-tensor-flow strong {
    color: #1e3a8a;
    font-size: 10px;
}

.semantic-tensor-flow span {
    color: #64748b;
    font-size: 9px;
}

.semantic-tensor-flow b {
    color: #94a3b8;
}

/* Semantic segmentation model inference mode */
.semantic-lab-workbench {
    grid-template-columns: minmax(240px, 264px) minmax(0, 1fr) minmax(272px, 310px);
    gap: 12px;
    align-items: start;
}

/* 类别筛选列表 — 限高可滚动 */
.semantic-lab-workbench [data-sem-class-filter] {
    max-height: 160px;
    overflow-y: auto;
    overflow-x: hidden;
    border-radius: 10px;
    scrollbar-width: thin;
    scrollbar-color: #bfdbfe transparent;
}

.semantic-control-section,
.semantic-model-panel {
    display: grid;
    gap: 9px;
}

.semantic-section-title {
    color: #1d4ed8;
    font-size: 10px;
    font-weight: 950;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.semantic-source-toggle {
    grid-template-columns: 1fr;
}

.semantic-lab-workbench [hidden] {
    display: none !important;
}

.semantic-model-panel {
    border: 1px solid #dbeafe;
    border-radius: 14px;
    padding: 11px;
    background: linear-gradient(180deg, #f8fbff, #ffffff);
}

.semantic-model-panel.is-sem-relevant,
.vision-field.is-sem-relevant,
.vision-toggle-row.is-sem-relevant,
[data-sem-class-filter].is-sem-relevant {
    border-color: #93c5fd;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
}

.semantic-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 2px;
}

.semantic-panel-head strong {
    border: 1px solid #bfdbfe;
    border-radius: 999px;
    padding: 3px 8px;
    color: #1d4ed8;
    font-size: 10px;
    background: #eff6ff;
}

.semantic-runtime-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4px;
}

.semantic-runtime-grid > div {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 2px;
    padding: 5px 8px;
    min-height: unset;
}

.semantic-runtime-grid > div span {
    font-size: 9.5px;
    color: #94a3b8;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.semantic-runtime-grid strong {
    overflow-wrap: anywhere;
    text-align: left;
    font-size: 10.5px;
    font-weight: 900;
    color: #1e3a8a;
}

.semantic-model-message,
.semantic-empty-text {
    margin-top: 6px;
    padding: 6px 8px;
    border-radius: 7px;
    color: #475569;
    font-size: 10px;
    line-height: 1.55;
    background: #f1f5f9;
}

.semantic-stage-panel {
    min-width: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.semantic-stage-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    border-bottom: 1px solid #e8eef6;
    padding: 7px 12px;
    background: #f8fbff;
}

.semantic-stage-strip span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 22px;
    border: 1px solid #dbeafe;
    border-radius: 999px;
    padding: 2px 8px;
    color: #64748b;
    font-size: 10px;
    font-weight: 850;
    background: #ffffff;
}

.semantic-stage-strip strong {
    color: #1d4ed8;
}

.process-step-console {
    display: grid;
    gap: 9px;
    border-bottom: 1px solid #e8eef6;
    padding: 10px 12px 12px;
    background:
        linear-gradient(90deg, rgba(219, 234, 254, 0.45) 1px, transparent 1px),
        linear-gradient(180deg, rgba(219, 234, 254, 0.45) 1px, transparent 1px),
        #ffffff;
    background-size: 24px 24px;
}

.process-step-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
}

.process-step-heading span,
.process-formula-card > span,
.process-principle-head span {
    color: #2563eb;
    font-size: 10px;
    font-weight: 950;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.process-step-heading strong,
.process-principle-head strong {
    color: #172554;
    font-size: 13px;
}

.process-filmstrip {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
}

.process-filmstrip button {
    position: relative;
    display: grid;
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 5px 8px;
    align-items: center;
    min-width: 0;
    min-height: 72px;
    border: 1px solid #dbeafe;
    border-radius: 13px;
    padding: 8px;
    color: #334155;
    cursor: pointer;
    text-align: left;
    background: rgba(248, 251, 255, 0.96);
    transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.process-filmstrip button:hover,
.process-filmstrip button.is-active {
    border-color: #93c5fd;
    background: #eff6ff;
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.12);
    transform: translateY(-1px);
}

.process-filmstrip button.is-complete {
    border-color: #bfdbfe;
    background: linear-gradient(180deg, #f8fbff, #eff6ff);
}

.process-filmstrip button.is-complete .process-step-num {
    background: #0ea5e9;
}

.process-filmstrip button.is-active::after,
.is-sem-playing .process-filmstrip button.is-complete::after {
    content: "";
    position: absolute;
    right: -8px;
    top: 50%;
    width: 16px;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, #60a5fa, transparent);
    transform: translateY(-50%);
    animation: semanticFlowGlow 1.2s ease-in-out infinite;
}

.process-step-num {
    grid-row: span 3;
    display: grid;
    width: 28px;
    height: 28px;
    place-items: center;
    border-radius: 50%;
    color: #ffffff;
    font-size: 10px;
    font-weight: 950;
    background: #2563eb;
}

.process-step-thumb {
    position: relative;
    overflow: hidden;
    width: 100%;
    height: 26px;
    border: 1px solid #bfdbfe;
    border-radius: 8px;
    background:
        linear-gradient(90deg, rgba(37, 99, 235, 0.12) 1px, transparent 1px),
        linear-gradient(180deg, rgba(37, 99, 235, 0.12) 1px, transparent 1px),
        #ffffff;
    background-size: 8px 8px;
}

.process-step-thumb::before,
.process-step-thumb::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    background: #2563eb;
}

.process-step-thumb::before {
    left: 8px;
    top: 8px;
    width: 34px;
    height: 8px;
}

.process-step-thumb::after {
    right: 8px;
    bottom: 7px;
    width: 24px;
    height: 8px;
    background: #22c55e;
}

.process-step-thumb[data-visual="channels"]::before,
.process-step-thumb[data-visual="blocks"]::before {
    width: 18px;
    height: 18px;
    border-radius: 5px;
    box-shadow: 15px -3px 0 rgba(37, 99, 235, 0.32), 30px -6px 0 rgba(37, 99, 235, 0.18);
}

.process-step-thumb[data-visual="metric"]::before {
    width: 26px;
    height: 16px;
    border-radius: 5px;
    background: rgba(37, 99, 235, 0.42);
}

.process-step-thumb[data-visual="metric"]::after {
    width: 26px;
    height: 16px;
    border-radius: 5px;
    background: rgba(249, 115, 22, 0.42);
    transform: translateX(-16px);
}

.process-filmstrip strong {
    overflow: hidden;
    color: #172554;
    font-size: 11px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.process-filmstrip small {
    overflow: hidden;
    color: #64748b;
    font-size: 9px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.process-visual-overlay {
    position: absolute;
    inset: 0;
    z-index: 6;
    overflow: hidden;
    pointer-events: none;
}

.semantic-process-overlay {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.02), rgba(15, 23, 42, 0.18));
}

.semantic-process-overlay[data-process-step="image"],
.semantic-process-overlay[data-process-step="preprocess"],
.semantic-process-overlay[data-process-step="backbone"],
.semantic-process-overlay[data-process-step="logits"],
.semantic-process-overlay[data-process-step="upsample"],
.semantic-process-overlay[data-process-step="argmax"],
.semantic-process-overlay[data-process-step="miou"] {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.06), rgba(15, 23, 42, 0.26));
}

.semantic-process-overlay[data-process-step="mask"] {
    background: transparent;
}

.semantic-step-visual {
    position: absolute;
    inset: 0;
    color: #0f172a;
}

.sem-input-grid {
    position: absolute;
    inset: 7%;
    border: 1px solid rgba(255, 255, 255, 0.68);
    border-radius: 14px;
    background:
        linear-gradient(90deg, rgba(255,255,255,0.38) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255,255,255,0.38) 1px, transparent 1px);
    background-size: 10% 12%;
}

.sem-coordinate-chip,
.sem-normalize-card,
.sem-resize-card,
.sem-logit-panel,
.sem-argmax-panel,
.sem-miou-equation,
.sem-mask-legend {
    position: absolute;
    border: 1px solid rgba(191, 219, 254, 0.92);
    border-radius: 12px;
    padding: 8px 10px;
    color: #1e3a8a;
    font-size: 11px;
    font-weight: 900;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.13);
}

.sem-tag-chip {
    position: absolute;
    padding: 5px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.02em;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.18);
    animation: semTagFadeIn 0.4s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}
.sem-tag-chip.is-segformer {
    top: 14px;
    right: 14px;
    color: #1e40af;
    background: rgba(37, 99, 235, 0.14);
    border: 1px solid rgba(37, 99, 235, 0.45);
}
.sem-tag-chip.is-fcn {
    top: 14px;
    right: 14px;
    margin-top: 34px;
    color: #7c2d12;
    background: rgba(249, 115, 22, 0.14);
    border: 1px solid rgba(249, 115, 22, 0.45);
}
@keyframes semTagFadeIn {
    from { opacity: 0; transform: translateY(-6px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.sem-coordinate-chip {
    left: 18px;
    bottom: 18px;
}

.sem-normalize-card {
    left: 18px;
    top: 18px;
    display: grid;
    grid-template-columns: auto 46px auto;
    align-items: center;
    gap: 8px;
}

.sem-normalize-card b {
    height: 3px;
    border-radius: 999px;
    background: linear-gradient(90deg, #2563eb, #22c55e);
    animation: semanticNormalize 1.35s ease-in-out infinite;
}

.sem-resize-card {
    right: 18px;
    top: 18px;
    display: grid;
    gap: 3px;
    text-align: right;
}

.sem-feature-map {
    position: absolute;
    right: 10%;
    top: 17%;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 4px;
    width: 31%;
    min-width: 140px;
    padding: 8px;
    border: 1px solid rgba(255, 255, 255, 0.58);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.28);
}

.sem-feature-map i {
    aspect-ratio: 1;
    border-radius: 5px;
    background: hsl(calc(210 + var(--i) * 8) 82% 58% / 0.55);
    animation: semanticFeaturePulse 1.5s ease-in-out infinite;
    animation-delay: calc(var(--i) * -0.025s);
}

.sem-logit-panel,
.sem-argmax-panel {
    right: 18px;
    bottom: 18px;
    display: grid;
    gap: 6px;
    width: min(300px, calc(100% - 36px));
}

.sem-logit-panel > div,
.sem-argmax-panel > div,
.semantic-probe-bars > div {
    display: grid;
    grid-template-columns: 82px minmax(0, 1fr) 34px;
    align-items: center;
    gap: 6px;
    font-size: 10px;
}

.sem-logit-panel span,
.sem-argmax-panel span,
.semantic-probe-bars span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    min-width: 0;
    color: #475569;
}

.sem-logit-panel i,
.sem-argmax-panel i,
.semantic-probe-bars i,
.sem-mask-legend i {
    width: 8px;
    height: 8px;
    flex: 0 0 auto;
    border-radius: 2px;
}

.sem-logit-panel b,
.sem-argmax-panel b,
.semantic-probe-bars b {
    height: 7px;
    overflow: hidden;
    border-radius: 999px;
    background: #dbeafe;
}

.sem-logit-panel em,
.sem-argmax-panel em,
.semantic-probe-bars em {
    display: block;
    height: 100%;
    border-radius: inherit;
    animation: semanticBarGrow 0.72s ease both;
}

.sem-logit-panel .is-winner,
.sem-argmax-panel .is-winner,
.semantic-probe-bars .is-winner {
    color: #1d4ed8;
    font-weight: 950;
}

.sem-upsample-arrow {
    position: absolute;
    left: 50%;
    top: 48%;
    display: grid;
    width: 48px;
    height: 48px;
    place-items: center;
    border-radius: 50%;
    color: #ffffff;
    font-weight: 950;
    background: #2563eb;
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.28);
    transform: translate(-50%, -50%);
}

.sem-highres-grid {
    position: absolute;
    right: 8%;
    top: 14%;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 3px;
    width: 30%;
    min-width: 140px;
    padding: 8px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.3);
}

.sem-highres-grid i {
    aspect-ratio: 1;
    border-radius: 3px;
    background: hsl(calc(200 + var(--i) * 11) 82% 58% / 0.55);
    animation: processExpand 1.35s ease-in-out infinite;
    animation-delay: calc(var(--i) * 0.01s);
}

.sem-mask-legend {
    left: 18px;
    bottom: 18px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px 10px;
    max-width: calc(100% - 36px);
}

.sem-mask-legend span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.sem-miou-equation {
    right: 18px;
    bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.process-structure-list {
    display: grid;
    gap: 6px;
}

.process-structure-list div {
    display: grid;
    gap: 2px;
    border: 1px solid #e2e8f0;
    border-radius: 9px;
    padding: 6px 8px;
    background: #f8fafc;
}

.process-structure-list dt,
.process-structure-list dd {
    margin: 0;
}

.process-structure-list dt {
    color: #64748b;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.process-structure-list dd {
    color: #0f172a;
    font-size: 12.5px;
    font-weight: 700;
    line-height: 1.35;
}

.process-scanline {
    position: absolute;
    right: 0;
    left: 0;
    top: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.88), transparent);
    box-shadow: 0 0 18px rgba(37, 99, 235, 0.4);
    animation: processScan 1.45s ease-in-out infinite;
}

.process-grid,
.process-expand-grid,
.process-decision-map {
    position: absolute;
    inset: 8%;
    display: grid;
    gap: 4px;
    opacity: 0.88;
}

.process-grid {
    background:
        linear-gradient(90deg, rgba(255,255,255,0.35) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255,255,255,0.35) 1px, transparent 1px);
    background-size: 9% 11%;
}

.process-block-cloud i,
.process-expand-grid i,
.process-decision-map i,
.process-channel-stack i {
    display: block;
    border: 1px solid rgba(255, 255, 255, 0.58);
    border-radius: 7px;
    background: rgba(37, 99, 235, 0.28);
}

.process-block-cloud {
    position: absolute;
    inset: 14% 18%;
}

.process-block-cloud i {
    position: absolute;
    width: 36px;
    height: 28px;
    left: calc(var(--mod6) * 15%);
    top: calc(var(--div6) * 30%);
    animation: processBlockMerge 2.2s ease-in-out infinite;
    animation-delay: calc(var(--i) * -0.055s);
}

.process-flow-line {
    position: absolute;
    left: 12%;
    right: 12%;
    top: 50%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #60a5fa, #22c55e, transparent);
    animation: processLineStretch 1.6s ease-in-out infinite;
}

.process-channel-stack {
    position: absolute;
    left: 20%;
    top: 18%;
    width: 58%;
    height: 58%;
}

.process-channel-stack i {
    position: absolute;
    inset: 0;
    background: rgba(37, 99, 235, calc(0.08 + var(--i) * 0.045));
    transform: translate(calc(var(--i) * 9px), calc(var(--i) * -6px));
    animation: processChannelPulse 1.9s ease-in-out infinite;
    animation-delay: calc(var(--i) * -0.08s);
}

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

.process-expand-grid i {
    min-height: 22px;
    animation: processExpand 1.55s ease-in-out infinite;
    animation-delay: calc(var(--i) * 0.025s);
}

.process-decision-map {
    grid-template-columns: repeat(6, minmax(0, 1fr));
}

.process-decision-map i {
    min-height: 20px;
    background: hsl(calc(206 + var(--i) * 19) 82% 58% / 0.42);
    animation: processDecision 1.35s ease-in-out infinite;
    animation-delay: calc(var(--i) * 0.018s);
}

.process-mask-ribbons,
.process-instance-masks {
    position: absolute;
    inset: 16% 12%;
}

.process-mask-ribbons i,
.process-instance-masks i {
    position: absolute;
    border-radius: 36% 64% 52% 48%;
    opacity: 0.62;
    animation: processMaskFloat 2.2s ease-in-out infinite;
}

.process-mask-ribbons i:nth-child(1),
.process-instance-masks i:nth-child(1) {
    inset: 12% 58% 28% 8%;
    background: #22c55e;
}

.process-mask-ribbons i:nth-child(2),
.process-instance-masks i:nth-child(2) {
    inset: 34% 28% 12% 42%;
    background: #8b5cf6;
    animation-delay: -0.35s;
}

.process-mask-ribbons i:nth-child(3),
.process-instance-masks i:nth-child(3) {
    inset: 10% 12% 52% 60%;
    background: #f97316;
    animation-delay: -0.7s;
}

.process-mask-ribbons i:nth-child(4) {
    inset: 58% 62% 8% 18%;
    background: #06b6d4;
}

.process-instance-masks b {
    position: absolute;
    right: 12%;
    bottom: 12%;
    border-radius: 999px;
    padding: 6px 10px;
    color: #ffffff;
    font-size: 12px;
    background: #1d4ed8;
}

.process-iou-demo {
    position: absolute;
    inset: 18% 14%;
}

.process-iou-demo i {
    position: absolute;
    width: 46%;
    height: 48%;
    border-radius: 12px;
}

.process-iou-demo .gt {
    left: 18%;
    top: 22%;
    background: rgba(34, 197, 94, 0.48);
}

.process-iou-demo .pred {
    left: 36%;
    top: 30%;
    background: rgba(249, 115, 22, 0.48);
    animation: processIouSlide 1.8s ease-in-out infinite;
}

.process-iou-demo b {
    position: absolute;
    left: 36%;
    top: 30%;
    width: 28%;
    height: 40%;
    border-radius: 10px;
    background: rgba(37, 99, 235, 0.5);
}

.process-iou-demo span {
    position: absolute;
    right: 10%;
    bottom: 8%;
    border-radius: 999px;
    padding: 6px 10px;
    color: #1e3a8a;
    font-size: 11px;
    font-weight: 950;
    background: rgba(255, 255, 255, 0.86);
}

.process-input-frame {
    position: absolute;
    inset: 18% 18%;
    border: 2px solid rgba(255,255,255,0.8);
    border-radius: 16px;
    animation: processFrameBreathe 1.8s ease-in-out infinite;
}

.process-input-frame i {
    position: absolute;
    width: 18%;
    height: 18%;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.42);
}

.process-input-frame i:nth-child(1) { left: 16%; top: 22%; }
.process-input-frame i:nth-child(2) { right: 18%; top: 32%; background: rgba(34, 197, 94, 0.42); }
.process-input-frame i:nth-child(3) { left: 44%; bottom: 18%; background: rgba(249, 115, 22, 0.42); }

.process-letterbox {
    position: absolute;
    inset: 18% 14%;
    border: 2px solid rgba(255,255,255,0.8);
    border-radius: 14px;
}

.process-letterbox i,
.process-letterbox b {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 14%;
    background: rgba(15, 23, 42, 0.42);
    animation: processPadPulse 1.6s ease-in-out infinite;
}

.process-letterbox i { left: 0; }
.process-letterbox b { right: 0; }

.process-rays {
    position: absolute;
    inset: 18% 12%;
}

.process-rays i {
    position: absolute;
    left: 12%;
    top: 50%;
    width: 70%;
    height: 2px;
    background: linear-gradient(90deg, #60a5fa, transparent);
    transform: rotate(calc(-38deg + var(--i) * 9deg));
    transform-origin: left center;
    animation: processRay 1.4s ease-in-out infinite;
    animation-delay: calc(var(--i) * -0.045s);
}

.process-candidate-boxes,
.process-nms-collision {
    position: absolute;
    inset: 13% 12%;
}

.process-candidate-boxes i {
    position: absolute;
    border: 2px solid #60a5fa;
    border-radius: 6px;
    width: calc(18% + var(--mod3) * 3%);
    height: calc(18% + var(--mod4) * 4%);
    left: calc(var(--mod4) * 18% + 4%);
    top: calc(var(--div4) * 32% + 14%);
    animation: processBoxPop 1.6s ease-in-out infinite;
    animation-delay: calc(var(--i) * 0.035s);
}

.process-nms-collision i,
.process-nms-collision b {
    position: absolute;
    border-radius: 9px;
}

.process-nms-collision i {
    width: 42%;
    height: 42%;
    border: 2px solid #f97316;
    animation: processNmsA 1.6s ease-in-out infinite;
}

.process-nms-collision i:nth-child(1) {
    left: 22%;
    top: 18%;
}

.process-nms-collision i:nth-child(2) {
    left: 36%;
    top: 30%;
    border-style: dashed;
    animation-name: processNmsB;
}

.process-nms-collision b {
    left: 38%;
    top: 34%;
    width: 22%;
    height: 24%;
    background: rgba(249, 115, 22, 0.34);
}

.process-nms-collision span {
    position: absolute;
    right: 10%;
    bottom: 12%;
    border-radius: 999px;
    padding: 6px 10px;
    color: #166534;
    font-size: 11px;
    font-weight: 950;
    background: rgba(220, 252, 231, 0.92);
}

.process-principle-stage {
    display: grid;
    grid-template-columns: minmax(150px, 0.55fr) minmax(0, 1fr);
    gap: 10px;
    border-top: 1px solid #e8eef6;
    padding: 12px;
    background: #fbfdff;
}

.process-principle-head {
    display: grid;
    gap: 4px;
}

.process-principle-motion {
    position: relative;
    min-height: 118px;
    overflow: hidden;
    border: 1px solid #dbeafe;
    border-radius: 14px;
    background:
        radial-gradient(circle at 24% 28%, rgba(37, 99, 235, 0.11), transparent 28%),
        linear-gradient(145deg, #eff6ff, #ffffff);
}

.process-principle-stage p {
    margin: 0;
    color: #475569;
    font-size: 12px;
    line-height: 1.65;
}

.process-formula-card {
    display: grid;
    gap: 9px;
    border: 1px solid #dbeafe;
    border-radius: 13px;
    padding: 12px;
    background: linear-gradient(180deg, #ffffff, #f8fbff);
}

.process-formula-card h4 {
    margin: 0;
    color: #172554;
    font-size: 15px;
}

.process-formula-card [data-process-formula] {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    border: 1px solid #bfdbfe;
    border-radius: 10px;
    padding: 12px;
    color: #1e40af;
    font-size: 15px;
    line-height: 1.5;
    white-space: normal;
    overflow-wrap: anywhere;
    background: #eff6ff;
}
.process-formula-card [data-process-formula] .katex {
    font-size: 1.15em;
}

.process-formula-card p {
    margin: 0;
    color: #475569;
    font-size: 12px;
    line-height: 1.65;
}

@keyframes processScan {
    from { transform: translateY(-12px); opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    to { transform: translateY(460px); opacity: 0; }
}

@keyframes processBlockMerge {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.52; }
    50% { transform: translate(26px, 16px) scale(0.78); opacity: 0.95; }
}

@keyframes processLineStretch {
    from { transform: scaleX(0); opacity: 0; }
    45% { transform: scaleX(1); opacity: 1; }
    to { transform: scaleX(1); opacity: 0; }
}

@keyframes processChannelPulse {
    0%, 100% { opacity: 0.34; }
    50% { opacity: 0.92; }
}

@keyframes processExpand {
    0% { transform: scale(0.7); opacity: 0.35; }
    60% { transform: scale(1); opacity: 0.9; }
    100% { transform: scale(1); opacity: 0.55; }
}

@keyframes processDecision {
    0%, 100% { filter: saturate(0.7); opacity: 0.45; }
    50% { filter: saturate(1.6); opacity: 0.9; }
}

@keyframes processMaskFloat {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-7px) scale(1.02); }
}

@keyframes processIouSlide {
    0%, 100% { transform: translateX(-6px); }
    50% { transform: translateX(8px); }
}

@keyframes processFrameBreathe {
    0%, 100% { transform: scale(0.98); opacity: 0.72; }
    50% { transform: scale(1.02); opacity: 1; }
}

@keyframes processPadPulse {
    0%, 100% { opacity: 0.32; }
    50% { opacity: 0.78; }
}

@keyframes processRay {
    from { transform-origin: left center; opacity: 0; width: 4%; }
    45% { opacity: 0.95; width: 70%; }
    to { opacity: 0; width: 70%; }
}

@keyframes processBoxPop {
    0%, 100% { transform: scale(0.9); opacity: 0.45; }
    50% { transform: scale(1.04); opacity: 0.96; }
}

@keyframes processNmsA {
    0%, 100% { transform: translateX(-10px); }
    50% { transform: translateX(0); }
}

@keyframes processNmsB {
    0%, 100% { transform: translateX(12px); opacity: 0.55; }
    50% { transform: translateX(0); opacity: 0.95; }
}

@keyframes semanticFlowGlow {
    0%, 100% { opacity: 0.3; transform: translateY(-50%) scaleX(0.55); }
    50% { opacity: 1; transform: translateY(-50%) scaleX(1); }
}

@keyframes semanticNormalize {
    0% { transform: scaleX(0.18); transform-origin: left; opacity: 0.45; }
    60% { transform: scaleX(1); opacity: 1; }
    100% { transform: scaleX(1); opacity: 0.62; }
}

@keyframes semanticFeaturePulse {
    0%, 100% { opacity: 0.38; transform: scale(0.92); }
    50% { opacity: 0.95; transform: scale(1.04); }
}

@keyframes semanticBarGrow {
    from { width: 0; }
}

.semantic-real-stage {
    flex: 0 0 auto;
    min-height: 300px;
    max-height: 460px;
    aspect-ratio: var(--sem-aspect, 4 / 3);
}

.semantic-real-stage > img {
    object-fit: fill;
}

.semantic-real-stage::after {
    content: "";
    position: absolute;
    top: 18px;
    left: 18px;
    z-index: 7;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #2563eb;
    box-shadow:
        0 0 0 0 rgba(37, 99, 235, 0.28),
        18px 0 0 #22c55e,
        36px 0 0 #f59e0b;
    animation: semantic-pulse-dots 1.8s ease-in-out infinite;
    pointer-events: none;
}

.overview-legend .is-muted,
.semantic-ratio-list .is-muted {
    opacity: 0.45;
}

.semantic-notes-tutorial {
    border: 1px solid #dbeafe;
    border-radius: 11px;
    padding: 10px 12px;
    color: #334155;
    font-size: 11px;
    line-height: 1.65;
    background: linear-gradient(145deg, #f8fbff, #eff6ff);
}

.semantic-notes-tutorial p {
    margin: 0;
}

.semantic-notes-tutorial code {
    color: #1d4ed8;
    font-family: Consolas, "Courier New", monospace;
    font-size: 10px;
}

.semantic-notes-data dl {
    display: grid;
    gap: 6px;
    margin: 0;
}

.semantic-notes-data dl > div {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 6px 8px;
    background: #f8fafc;
}

.semantic-notes-data dt,
.semantic-notes-data dd {
    margin: 0;
    font-size: 10px;
}

.semantic-notes-data dt {
    color: #64748b;
    font-weight: 750;
}

.semantic-notes-data dd {
    color: #0f172a;
    font-weight: 900;
    text-align: right;
    overflow-wrap: anywhere;
}

.semantic-note-swatch {
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 5px;
    border-radius: 3px;
    vertical-align: -1px;
}

.semantic-stepper {
    grid-template-columns: repeat(8, minmax(0, 1fr));
}

.semantic-stepper li {
    padding-right: 18px;
}

.semantic-stepper li:not(:last-child)::after {
    right: 6px;
    width: calc(100% - 118px);
}

.semantic-stepper li.is-complete {
    border-color: #bfdbfe;
    background: #f8fbff;
}

.semantic-playback-panel {
    display: grid;
    gap: 10px;
    margin-top: 12px;
    border: 1px solid #dbeafe;
    border-radius: 16px;
    padding: 12px;
    background: linear-gradient(180deg, #ffffff, #f8fbff);
}

.semantic-playback-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.semantic-playback-head > div:first-child {
    display: grid;
    gap: 3px;
}

.semantic-playback-head span {
    color: #2563eb;
    font-size: 10px;
    font-weight: 950;
    letter-spacing: 0.08em;
}

.semantic-playback-head strong {
    color: #172554;
    font-size: 13px;
}

.semantic-playback-actions {
    display: flex;
    gap: 8px;
}

.semantic-playback-actions button {
    border: 1px solid #bfdbfe;
    border-radius: 999px;
    padding: 7px 13px;
    color: #1d4ed8;
    font-size: 11px;
    font-weight: 900;
    cursor: pointer;
    background: #eff6ff;
}

.semantic-playback-actions button:hover {
    border-color: #60a5fa;
    background: #dbeafe;
}

.semantic-progress-track {
    position: relative;
    height: 7px;
    overflow: hidden;
    border-radius: 999px;
    background: #e2e8f0;
}

.semantic-progress-track::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: var(--sem-progress, 0%);
    border-radius: inherit;
    background: linear-gradient(90deg, #2563eb, #22c55e);
    transition: width 0.28s ease;
}

.semantic-tensor-flow {
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 6px;
    overflow: hidden;
}

.semantic-tensor-flow div,
.semantic-stepper li,
.process-filmstrip button,
.semantic-playback-panel {
    min-width: 0;
}

.semantic-tensor-flow b {
    display: none;
}

.semantic-tensor-flow div {
    position: relative;
}

.semantic-tensor-flow div::after {
    content: "0 1 2";
    position: absolute;
    right: 8px;
    bottom: 5px;
    color: rgba(37, 99, 235, 0.18);
    font-family: Consolas, "Courier New", monospace;
    font-size: 9px;
    font-weight: 900;
    opacity: 0;
    transform: translateY(6px);
}

.semantic-tensor-flow div.is-active {
    border-color: #93c5fd;
    background: #dbeafe;
    box-shadow: inset 3px 0 0 #2563eb;
}

.semantic-tensor-flow div.is-active::after {
    opacity: 1;
    animation: semantic-number-fly 1.25s ease-in-out infinite;
}

.semantic-tensor-flow b {
    position: relative;
    min-width: 18px;
    text-align: center;
}

.semantic-tensor-flow b::after {
    content: "";
    position: absolute;
    right: -1px;
    bottom: 5px;
    left: -1px;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, transparent, #2563eb, transparent);
    transform: scaleX(0);
    transform-origin: left;
    animation: semantic-arrow-stretch 1.55s ease-in-out infinite;
}

.semantic-fcn-demo {
    display: grid;
    gap: 12px;
    border-top: 1px solid #e8eef6;
    padding: 12px;
    background:
        linear-gradient(90deg, rgba(219, 234, 254, 0.42) 1px, transparent 1px),
        linear-gradient(180deg, rgba(219, 234, 254, 0.42) 1px, transparent 1px),
        #f8fafc;
    background-size: 28px 28px;
}

.semantic-fcn-demo-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 10px;
    background: rgba(255, 251, 235, 0.9);
    border: 1px solid #fde68a;
}

.semantic-fcn-demo-header p {
    margin: 0;
    color: #92400e;
    font-size: 11px;
    line-height: 1.4;
}

.semantic-fcn-demo-badge {
    flex-shrink: 0;
    padding: 3px 8px;
    border-radius: 999px;
    background: #f59e0b;
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.semantic-fcn-pipeline {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
}

.semantic-fcn-pipeline article {
    position: relative;
    display: grid;
    gap: 4px;
    min-height: 86px;
    border: 1px solid #dbeafe;
    border-radius: 13px;
    padding: 10px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.94);
}

.semantic-fcn-pipeline article.is-active {
    border-color: #60a5fa;
    background: #eff6ff;
    box-shadow: inset 3px 0 0 #2563eb;
}

.semantic-fcn-pipeline strong {
    color: #172554;
    font-size: 11px;
}

.semantic-fcn-pipeline span {
    color: #64748b;
    font-size: 10px;
    line-height: 1.4;
}

.semantic-fcn-pipeline i {
    position: absolute;
    right: 10px;
    bottom: 9px;
    width: 48px;
    height: 22px;
    border-radius: 7px;
    background:
        linear-gradient(90deg, rgba(37, 99, 235, 0.16) 1px, transparent 1px),
        linear-gradient(180deg, rgba(37, 99, 235, 0.16) 1px, transparent 1px),
        linear-gradient(145deg, #dbeafe, #ffffff);
    background-size: 8px 8px, 8px 8px, auto;
}

.semantic-fcn-visual-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.semantic-fcn-visual-grid section,
.semantic-fcn-mini-card {
    display: grid;
    gap: 9px;
    min-width: 0;
    border: 1px solid #dbeafe;
    border-radius: 13px;
    padding: 11px;
    background: #ffffff;
}

.semantic-fcn-visual-grid h4,
.semantic-fcn-mini-card h5 {
    margin: 0;
    color: #172554;
    font-size: 12px;
}

.semantic-fcn-channel-stack,
.semantic-fcn-upsample,
.semantic-skip-compare {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 8px;
    min-height: 100px;
}

.fcn-feature-cube,
.fcn-logit-cube {
    position: relative;
    display: grid;
    min-height: 82px;
    place-items: center;
    border: 1px solid #bfdbfe;
    border-radius: 12px;
    overflow: hidden;
    color: #1e40af;
    font-size: 10px;
    font-weight: 900;
    background: #eff6ff;
}

.fcn-feature-cube i,
.fcn-logit-cube i {
    position: absolute;
    width: 44px;
    height: 32px;
    border: 1px solid rgba(37, 99, 235, 0.32);
    border-radius: 8px;
    background: rgba(96, 165, 250, 0.22);
    transform: translate(calc(var(--i, 0) * 4px), calc(var(--i, 0) * -3px));
}

.fcn-logit-cube i {
    position: static;
    width: 20px;
    height: 20px;
    transform: none;
}

.fcn-logit-cube {
    grid-template-columns: repeat(3, 20px);
    gap: 5px;
}

.fcn-logit-cube span {
    grid-column: 1 / -1;
    text-align: center;
}

.semantic-fcn-channel-stack > b,
.semantic-fcn-upsample > b,
.fcn-skip-plus {
    display: grid;
    min-width: 34px;
    min-height: 34px;
    place-items: center;
    border-radius: 50%;
    color: #ffffff;
    font-size: 11px;
    font-weight: 950;
    background: #2563eb;
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.22);
}

.fcn-lowres-grid,
.fcn-highres-grid {
    display: grid;
    gap: 2px;
    border: 1px solid #dbeafe;
    border-radius: 12px;
    padding: 8px;
    background: #f8fafc;
}

.fcn-lowres-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.fcn-highres-grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
}

.fcn-lowres-grid i,
.fcn-highres-grid i {
    min-height: 11px;
    border-radius: 3px;
}

.fcn-skip-tile {
    display: grid;
    gap: 7px;
    border: 1px solid #dbeafe;
    border-radius: 12px;
    padding: 8px;
    background: #f8fafc;
}

.fcn-skip-tile strong {
    color: #1e40af;
    font-size: 10px;
}

.fcn-skip-tile span {
    display: block;
    min-height: 58px;
    opacity: 0.8;
}

.fcn-skip-tile.is-coarse span {
    border-radius: 18px;
    clip-path: polygon(10% 14%, 88% 8%, 94% 72%, 76% 92%, 18% 84%);
}

.fcn-skip-tile.is-fine span {
    border-radius: 10px;
    clip-path: polygon(8% 12%, 46% 9%, 56% 18%, 88% 10%, 94% 68%, 80% 88%, 54% 84%, 46% 94%, 18% 84%, 12% 58%);
}

.semantic-fcn-notes-panel {
    display: grid;
    gap: 10px;
}

.semantic-fcn-mini-card p {
    margin: 0;
    color: #64748b;
    font-size: 11px;
    line-height: 1.55;
}

.semantic-fcn-mini-card code {
    display: block;
    border: 1px solid #dbeafe;
    border-radius: 9px;
    padding: 8px;
    color: #1e40af;
    font-family: Consolas, "Courier New", monospace;
    font-size: 10px;
    background: #eff6ff;
    overflow-wrap: anywhere;
}

.semantic-miou-table {
    display: grid;
    gap: 5px;
}

.semantic-miou-head,
.semantic-miou-table button {
    display: grid;
    grid-template-columns: minmax(70px, 1fr) 58px 48px 42px;
    align-items: center;
    gap: 5px;
}

.semantic-miou-head {
    color: #64748b;
    font-size: 9px;
    font-weight: 900;
    text-transform: uppercase;
}

.semantic-miou-table button {
    border: 1px solid #e2e8f0;
    border-radius: 9px;
    padding: 6px;
    color: #334155;
    font: inherit;
    font-size: 10px;
    text-align: left;
    cursor: pointer;
    background: #f8fafc;
}

.semantic-miou-table button.is-active {
    border-color: #93c5fd;
    background: #eff6ff;
}

.semantic-miou-table button span:first-child {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.semantic-miou-table i {
    display: inline-block;
    width: 9px;
    height: 9px;
    margin-right: 5px;
    border-radius: 3px;
}

@keyframes semantic-loading-sheen {
    from { background-position: 0 0; }
    to { background-position: -220% 0; }
}

@keyframes semantic-number-fly {
    0% { transform: translateY(7px) scale(0.96); opacity: 0; }
    42% { transform: translateY(0) scale(1); opacity: 1; }
    100% { transform: translateY(-7px) scale(0.98); opacity: 0; }
}

@keyframes semantic-arrow-stretch {
    0% { transform: scaleX(0); opacity: 0; }
    45% { transform: scaleX(1); opacity: 1; }
    100% { transform: scaleX(1); opacity: 0; }
}

@keyframes semantic-pulse-dots {
    0%, 100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.22), 18px 0 0 #22c55e, 36px 0 0 #f59e0b; }
    50% { box-shadow: 0 0 0 8px rgba(37, 99, 235, 0), 18px 0 0 #22c55e, 36px 0 0 #f59e0b; }
}

@media (max-width: 1220px) {
    .semantic-lab-workbench {
        grid-template-columns: minmax(240px, 270px) minmax(0, 1fr);
    }

    .semantic-lab-workbench .vision-notes-panel {
        grid-column: 1 / -1;
    }
}

@media (max-width: 960px) {
    .process-filmstrip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .process-principle-stage {
        grid-template-columns: 1fr;
    }

    .semantic-stepper {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        row-gap: 12px;
    }

    .semantic-stepper li:nth-child(3)::after {
        display: none;
    }

    .semantic-tensor-flow {
        grid-template-columns: 1fr;
    }

    .semantic-tensor-flow b {
        display: none;
    }

    .semantic-fcn-pipeline {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .semantic-fcn-visual-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 820px) {
    .semantic-lab-workbench {
        grid-template-columns: 1fr;
    }

    .semantic-lab-workbench .vision-notes-panel {
        grid-column: auto;
    }

    .semantic-source-toggle {
        grid-template-columns: 1fr;
    }

    .semantic-real-stage {
        min-height: 300px;
    }
}

@media (max-width: 560px) {
    .process-filmstrip {
        grid-template-columns: 1fr;
    }

    .semantic-stepper {
        grid-template-columns: 1fr;
    }

    .semantic-stepper li::after {
        display: none;
    }

    .semantic-stage-strip span {
        width: 100%;
        justify-content: space-between;
    }

    .semantic-fcn-pipeline {
        grid-template-columns: 1fr;
    }

    .semantic-miou-head,
    .semantic-miou-table button {
        grid-template-columns: minmax(0, 1fr) 48px 44px 38px;
    }
}

.instance-real-stage svg {
    pointer-events: auto;
}

.instance-poly {
    cursor: pointer;
    transition: fill-opacity 0.18s ease;
}

.instance-svg-bbox,
.instance-svg-label {
    cursor: pointer;
}

.instance-poly.is-selected {
    filter: drop-shadow(0 0 4px rgba(15, 23, 42, 0.45));
}

.instance-svg-bbox.is-selected {
    stroke-width: 2.4;
}

.instance-svg-label {
    fill: #ffffff;
    font-size: 3.3px;
    font-weight: 950;
    paint-order: stroke;
    stroke: rgba(15, 23, 42, 0.88);
    stroke-width: 0.7px;
}

.instance-list button.is-active {
    border-color: #93c5fd;
    background: #eff6ff;
}

.instance-current-card {
    display: grid;
    grid-template-columns: 86px minmax(0, 1fr);
    gap: 12px;
    border-top: 1px solid #e8eef6;
    padding: 12px;
    background: #ffffff;
}

.instance-preview-swatch {
    display: grid;
    min-height: 86px;
    place-items: center;
    border: 2px solid var(--instance-color);
    border-radius: 12px;
    color: var(--instance-color);
    font-weight: 950;
    background: color-mix(in srgb, var(--instance-color) 12%, #ffffff);
}

.instance-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.instance-stats-grid div {
    display: grid;
    gap: 4px;
    border-left: 1px solid #e2e8f0;
    padding-left: 10px;
}

.instance-stats-grid span {
    color: #94a3b8;
    font-size: 9px;
    font-weight: 900;
    text-transform: uppercase;
}

.instance-stats-grid strong {
    overflow-wrap: anywhere;
    color: #0f172a;
    font-size: 11px;
}

/* ==========================================================================
   Semantic Segmentation Interactive IoU Metrics Toy Styles
   ========================================================================== */
.semantic-iou-toy-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    border: 1px solid #bfdbfe;
    border-radius: 14px;
    padding: 14px;
    background: linear-gradient(145deg, #f8fbff, rgba(238, 246, 255, 0.95));
    box-shadow: inset 0 0 12px rgba(37, 99, 235, 0.03), 0 2px 8px rgba(148, 163, 184, 0.05);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.semantic-iou-toy-card:hover {
    border-color: #93c5fd;
    box-shadow: inset 0 0 16px rgba(37, 99, 235, 0.05), 0 4px 16px rgba(37, 99, 235, 0.08);
}

.toy-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.semantic-iou-toy-card h5 {
    margin: 0;
    color: #1e3a8a;
    font-size: 13px;
    font-weight: 780;
    letter-spacing: -0.01em;
}

.toy-badge {
    background: #eff6ff;
    color: #2563eb;
    border: 1px solid #dbeafe;
    padding: 2px 7px;
    border-radius: 999px;
    font-size: 9px;
    font-weight: 900;
    text-transform: uppercase;
}

.toy-card-desc {
    margin: 0;
    color: #64748b;
    font-size: 11px;
    line-height: 1.45;
}

.toy-flex-canvas {
    position: relative;
    height: 90px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    background-color: #f1f5f9;
    overflow: hidden;
    display: flex;
    align-items: center;
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.04);
}

.toy-canvas-grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
    background-size: 10px 10px;
    opacity: 0.6;
    pointer-events: none;
}

.toy-visual-box {
    position: absolute;
    height: 54px;
    width: 65px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 900;
    transition: left 0.05s linear, width 0.05s linear;
}

.toy-box-gt {
    left: 45px;
    border: 2px solid #2563eb;
    background: rgba(37, 99, 235, 0.12);
    color: #1d4ed8;
    z-index: 10;
}

.toy-box-pred {
    left: 110px; /* 控制偏移量 */
    border: 2px dashed #ef4444;
    background: rgba(239, 68, 68, 0.08);
    color: #b91c1c;
    z-index: 9;
}

.toy-box-intersection {
    left: 0;
    width: 0;
    border: 1.5px solid #10b981;
    background: repeating-linear-gradient(
        45deg,
        rgba(16, 185, 129, 0.25),
        rgba(16, 185, 129, 0.25) 4px,
        rgba(16, 185, 129, 0.4) 4px,
        rgba(16, 185, 129, 0.4) 8px
    );
    color: #047857;
    z-index: 12;
    pointer-events: none;
    display: none; /* 由 JS 按需展示 */
    align-items: center;
    justify-content: center;
}

.toy-label {
    background: rgba(255, 255, 255, 0.9);
    padding: 1px 4px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    pointer-events: none;
    font-size: 8px;
}

.toy-slider-section {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.toy-slider-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: #475569;
}

.toy-slider-label strong {
    color: #2563eb;
    font-weight: 800;
}

.toy-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.toy-range-input {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 999px;
    background: #e2e8f0;
    outline: none;
    margin: 0;
    cursor: pointer;
    transition: background 0.2s;
}

.toy-range-input:hover {
    background: #cbd5e1;
}

.toy-range-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #2563eb;
    border: 2px solid #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toy-range-input::-webkit-slider-thumb:hover {
    transform: scale(1.25);
    background: #1d4ed8;
}

.toy-range-input::-moz-range-thumb {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #2563eb;
    border: 2px solid #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toy-range-input::-moz-range-thumb:hover {
    transform: scale(1.25);
    background: #1d4ed8;
}

.toy-math-panel {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 10px;
}

.toy-math-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: #475569;
}

.toy-math-row code {
    background: #e2e8f0;
    color: #0f172a;
    padding: 1px 5px;
    border-radius: 4px;
    font-family: inherit;
    font-weight: 600;
}

.toy-math-formula-card {
    border-top: 1px dashed #cbd5e1;
    margin-top: 4px;
    padding-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.toy-math-label-mini {
    color: #94a3b8;
    font-size: 8px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.toy-math-formula-expr {
    color: #1e293b;
    font-size: 13.5px;
    background: #ffffff;
    border: 1px solid #f1f5f9;
    border-radius: 6px;
    padding: 8px 6px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
    font-family: font-serif, Georgia, Cambria, "Times New Roman", Times, serif;
    font-style: italic;
    word-break: break-all;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 38px;
}