.fraction-lab-card {
    container-type: size;
    background: linear-gradient(145deg, rgba(255,255,255,0.98), rgba(236,253,245,0.96));
    border-color: rgba(34,197,94,0.42);
    color: #0f172a;
}
.fraction-lab-card .js-widget-resize-handle {
    opacity: 0.75;
    bottom: 0.65rem;
    right: 0.65rem;
}
.fraction-lab-card .js-widget-resize-handle::after {
    width: 13px;
    height: 13px;
    border-bottom-color: rgba(15,23,42,0.72);
    border-right-color: rgba(15,23,42,0.72);
}
.fraction-lab-card .js-widget-drag-handle {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border-radius: 1.8rem;
    opacity: 0;
    margin: 0;
    padding: 0;
    z-index: 5;
    cursor: grab;
}
.fraction-lab-card .js-widget-ctrl {
    position: absolute !important;
    top: -0.625rem !important;
    right: -0.625rem !important;
    z-index: 35;
}
.fraction-lab-card.is-minimized .fraction-lab-widget {
    display: none !important;
}
.fraction-lab-card.is-minimized .js-minimized-label {
    color: #0f172a !important;
}
.fraction-lab-widget {
    --fl-primary: #7c3aed;
    --fl-secondary: #06b6d4;
    --fl-accent: #f97316;
    --fl-bg: #eff6ff;
    --fl-card: #ffffff;
    --fl-text: #0f172a;
    --fl-success: #16a34a;
    --fl-warning: #f59e0b;
    display: flex;
    min-width: 0;
    min-height: 0;
    height: 100%;
    flex-direction: column;
    gap: 0.55rem;
    color: var(--fl-text);
    position: relative;
    z-index: 10;
}
.fraction-lab-widget[data-theme="pastel"] {
    --fl-primary: #ec4899;
    --fl-secondary: #38bdf8;
    --fl-accent: #a78bfa;
    --fl-bg: #fff7ed;
    --fl-card: #fffaf5;
}
.fraction-lab-widget[data-theme="space"] {
    --fl-primary: #8b5cf6;
    --fl-secondary: #22d3ee;
    --fl-accent: #facc15;
    --fl-bg: #111827;
    --fl-card: #1e1b4b;
    --fl-text: #f8fafc;
}
.fraction-lab-widget[data-theme="ocean"] {
    --fl-primary: #0284c7;
    --fl-secondary: #14b8a6;
    --fl-accent: #f59e0b;
    --fl-bg: #ecfeff;
    --fl-card: #ffffff;
}
.fraction-lab-widget[data-theme="minimal"] {
    --fl-primary: #334155;
    --fl-secondary: #64748b;
    --fl-accent: #0f766e;
    --fl-bg: #f8fafc;
    --fl-card: #ffffff;
}
.fl-top {
    display: grid;
    grid-template-columns: minmax(9rem, auto) minmax(0, 1fr) auto;
    gap: 0.6rem;
    align-items: start;
}
.fl-title h3,
.fl-title h1 {
    margin: 0;
    font-size: clamp(1.05rem, 3cqw, 1.65rem);
    font-weight: 950;
    line-height: 1;
}
.fl-title p {
    margin: 0.18rem 0 0;
    font-size: clamp(0.68rem, 1.5cqw, 0.82rem);
    font-weight: 850;
    color: #64748b;
}
.fraction-lab-widget[data-theme="space"] .fl-title p,
.fraction-lab-widget[data-theme="space"] .fl-note {
    color: #c4b5fd;
}
.fl-tabs {
    display: flex;
    gap: 0.35rem;
    overflow-x: auto;
    padding-bottom: 0.15rem;
    scrollbar-width: thin;
}
.fl-tab,
.fl-btn,
.fl-step,
.fl-select,
.fl-toggle {
    min-height: 2.35rem;
    border: 0;
    border-radius: 999px;
    font-weight: 950;
    touch-action: manipulation;
}
.fl-tab {
    flex: 0 0 auto;
    padding: 0.45rem 0.75rem;
    background: rgba(255,255,255,0.82);
    color: #334155;
    box-shadow: inset 0 0 0 1px rgba(148,163,184,0.22);
    font-size: 0.74rem;
}
.fl-tab.is-active {
    background: linear-gradient(135deg, var(--fl-primary), var(--fl-secondary));
    color: #fff;
    box-shadow: 0 10px 22px rgba(15,23,42,0.16);
}
.fl-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.35rem;
}
.fl-btn {
    padding: 0.45rem 0.8rem;
    background: var(--fl-primary);
    color: #fff;
    box-shadow: 0 8px 18px rgba(15,23,42,0.12);
}
.fl-btn.secondary {
    background: #fff;
    color: #0f172a;
    box-shadow: inset 0 0 0 1px rgba(148,163,184,0.28);
}
.fl-btn.warning { background: var(--fl-accent); }
.fl-main {
    min-height: 0;
    flex: 1 1 auto;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    gap: 0.55rem;
    border-radius: 1.35rem;
    background: var(--fl-bg);
    padding: 0.65rem;
    overflow: hidden;
}
.fl-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
}
.fl-control-card {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border-radius: 999px;
    background: rgba(255,255,255,0.88);
    padding: 0.25rem;
    box-shadow: inset 0 0 0 1px rgba(148,163,184,0.18);
}
.fraction-lab-widget[data-theme="space"] .fl-control-card,
.fraction-lab-widget[data-theme="space"] .fl-tab,
.fraction-lab-widget[data-theme="space"] .fl-mode-panel {
    background: rgba(15,23,42,0.78);
    color: #f8fafc;
}
.fl-step {
    min-width: 2.35rem;
    background: var(--fl-secondary);
    color: #fff;
    font-size: 1.15rem;
}
.fl-value {
    min-width: 2rem;
    text-align: center;
    font-size: 1rem;
    font-weight: 950;
}
.fl-select {
    padding: 0.35rem 0.65rem;
    border: 1px solid rgba(148,163,184,0.35);
    background: #fff;
    color: #0f172a;
}
.fl-visual {
    min-height: 0;
    overflow: auto;
}
.fl-mode-panel {
    min-height: 100%;
    border-radius: 1.2rem;
    background: var(--fl-card);
    padding: clamp(0.65rem, 2cqw, 1rem);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9), 0 12px 28px rgba(15,23,42,0.08);
}
.fl-big-fraction {
    font-size: clamp(1.4rem, 5cqw, 3rem);
    font-weight: 950;
    text-align: center;
}
.fl-svg {
    width: min(100%, 34rem);
    max-height: 46cqh;
    display: block;
    margin: 0 auto;
    overflow: visible;
}
.fl-slice,
.fl-bar-segment,
.fl-shape-part,
.fl-hundred-cell {
    cursor: pointer;
    transition: opacity 0.18s ease, transform 0.18s ease, fill 0.18s ease;
}
.fl-slice:hover,
.fl-bar-segment:hover,
.fl-shape-part:hover,
.fl-hundred-cell:hover {
    opacity: 0.85;
}
.fl-shape-tools {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem;
}
.fl-shape-part {
    cursor: pointer;
}
.fl-bars-stack,
.fl-equivalent-stack {
    display: grid;
    gap: 0.55rem;
    align-content: center;
}
.fl-bar-tools {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.45rem;
}
.fl-fraction-bars-board {
    display: grid;
    gap: 0.7rem;
}
.fl-fraction-bar-row {
    display: grid;
    grid-template-columns: minmax(4.8rem, 0.55fr) minmax(14rem, 2fr) minmax(5rem, auto) auto;
    align-items: center;
    gap: 0.55rem;
    border-radius: 1rem;
    background: rgba(255,255,255,0.9);
    padding: 0.6rem;
    box-shadow: 0 10px 22px rgba(15,23,42,0.08);
}
.fl-bar-side {
    display: grid;
    gap: 0.1rem;
    font-weight: 950;
    color: #334155;
}
.fl-bar-side span {
    color: var(--fl-primary);
}
.fl-true-bar {
    display: grid;
    min-height: clamp(3rem, 9cqh, 5.4rem);
    overflow: hidden;
    border: 3px solid rgba(15,23,42,0.18);
    border-radius: 0.9rem;
    background: #fff;
}
.fl-bar-block {
    min-width: 0;
    border: 0;
    border-right: 2px solid rgba(15,23,42,0.18);
    background: #f8fafc;
    color: #334155;
    font-weight: 950;
    cursor: pointer;
}
.fl-bar-block:last-child { border-right: 0; }
.fl-bar-block.is-on {
    background: linear-gradient(135deg, var(--fl-primary), var(--fl-secondary));
    color: #fff;
}
.fl-bar-denom {
    display: grid;
    gap: 0.2rem;
    font-weight: 900;
    color: #475569;
}
.fl-bar {
    display: grid;
    min-height: clamp(2.4rem, 8cqh, 4.2rem);
    border-radius: 1rem;
    overflow: hidden;
    border: 3px solid rgba(15,23,42,0.14);
    background: #fff;
}
.fl-bar-part {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    border-right: 2px solid rgba(15,23,42,0.14);
    font-weight: 950;
    cursor: pointer;
}
.fl-bar-part:last-child { border-right: 0; }
.fl-bar-part.is-on {
    background: linear-gradient(135deg, var(--fl-primary), var(--fl-secondary));
    color: #fff;
}
.fl-presets {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.35rem;
    margin-top: 0.55rem;
}
.fl-compare-grid,
.fl-mixed-grid,
.fl-decimal-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0.75rem;
    align-items: center;
}
.fl-compare-card {
    border-radius: 1rem;
    background: rgba(248,250,252,0.92);
    padding: 0.65rem;
}
.fl-side-label {
    margin: 0 0 0.35rem;
    text-align: center;
    font-weight: 950;
    color: #475569;
}
.fl-raw-fraction {
    display: block;
    margin-top: 0.1rem;
    font-size: 0.42em;
    color: #64748b;
}
.fl-compare-controls {
    display: grid;
    gap: 0.45rem;
    margin-top: 0.55rem;
}
.fl-mixed-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.55rem;
    margin-bottom: 0.75rem;
}
.fl-compare-row {
    display: grid;
    grid-template-columns: minmax(5.3rem, auto) 2.15rem 2.4rem 2.15rem;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    font-weight: 850;
    color: #334155;
}
.fl-mini-step {
    width: 2.15rem;
    height: 2.15rem;
    border: 0;
    border-radius: 999px;
    background: var(--fl-secondary);
    color: #fff;
    font-size: 1.15rem;
    font-weight: 950;
    cursor: pointer;
}
.fl-mini-value {
    min-width: 2.4rem;
    text-align: center;
    font-weight: 950;
}
.fl-symbol {
    min-width: clamp(3.4rem, 9cqw, 5.5rem);
    font-size: clamp(2rem, 8cqw, 4rem);
    font-weight: 950;
    text-align: center;
    color: var(--fl-accent);
}
.fl-symbol.is-hidden-answer {
    border-radius: 999px;
    background: rgba(255,255,255,0.82);
    padding: 0.55rem 0.8rem;
    font-size: clamp(0.9rem, 2.2cqw, 1.25rem);
    color: #475569;
}
.fl-decimal-teaching-grid {
    grid-template-columns: minmax(9rem, 1fr) minmax(8rem, 0.8fr) minmax(8rem, 0.8fr) minmax(11rem, 1fr);
}
.fl-mixed-wholes {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem;
}
.fl-mixed-wholes .fl-svg {
    width: clamp(4.5rem, 14cqw, 9rem);
}
.fl-mixed-part .fl-slice {
    cursor: pointer;
}
.fl-decimal-card,
.fl-hundred-wrap {
    border-radius: 1rem;
    background: rgba(248,250,252,0.92);
    padding: 0.75rem;
}
.fl-decimal-card {
    display: grid;
    align-content: start;
    justify-items: center;
    min-width: 0;
}
.fl-decimal-card .fl-explain,
.fl-hundred-wrap .fl-explain {
    margin-top: 0.35rem;
}
.fl-explain {
    margin-top: 0.6rem;
    text-align: center;
    font-size: clamp(0.9rem, 2cqw, 1.1rem);
    font-weight: 850;
}
.fl-difficulty-note {
    grid-column: 1 / -1;
    margin: 0;
    border-radius: 0.85rem;
    background: rgba(255,255,255,0.78);
    padding: 0.45rem 0.7rem;
    color: #334155;
    font-size: 0.9rem;
    font-weight: 850;
}
.fl-numberline {
    width: 100%;
    height: min(42cqh, 18rem);
    touch-action: none;
}
.fl-hundred-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(2.2rem, 1fr));
    gap: 0.45rem;
    max-width: 32rem;
    margin: 0.8rem auto;
}
.fl-hundred-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    border-radius: 999px;
    background: #fff;
    border: 2px solid rgba(15,23,42,0.12);
    font-weight: 950;
}
.fl-hundred-cell.is-on {
    background: var(--fl-accent);
    color: #fff;
    transform: translateY(-2px);
}
.fl-hundred-grid {
    grid-template-columns: repeat(10, minmax(1.1rem, 1fr));
    gap: 0.2rem;
    max-width: 16rem;
}
.fl-hundred-cell {
    border-radius: 0.28rem;
    font-size: 0;
}
.fl-settings {
    display: none;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.45rem;
    border-radius: 1rem;
    background: rgba(255,255,255,0.86);
    padding: 0.55rem;
}
.fraction-lab-widget.is-settings-open .fl-settings { display: flex; }
.fraction-lab-widget.is-large-text {
    font-size: 115%;
}
@media (max-width: 760px) {
    .fl-top {
        grid-template-columns: 1fr;
    }
    .fl-actions {
        justify-content: flex-start;
    }
    .fl-compare-grid,
    .fl-mixed-grid,
    .fl-decimal-grid {
        grid-template-columns: 1fr;
    }
    .fl-fraction-bar-row {
        grid-template-columns: 1fr;
    }
    .fl-symbol {
        margin: 0 auto;
    }
}