:root {
    color-scheme: light;
    --accent: #488af3;
    --border: #d9d9d9;
    --demo-background: radial-gradient(circle at 50% 42%, #fff 0, #f5f6f8 55%, #e9ebef 100%);
    --muted: #666;
    --page-max-width: 1000px;
    --text: #333;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100%;
    margin: 0;
    padding: 2em;
    background-color: #fff;
    color: var(--text);
    font-family: 'Open Sans', sans-serif;
    font-size: 1rem;
    line-height: 1.5;
}

.paper-header,
.section {
    width: min(100%, var(--page-max-width));
    margin-right: auto;
    margin-left: auto;
}

.paper-header {
    padding-top: 0.75rem;
    text-align: center;
}

.title {
    margin: 0;
    color: #4d4d4d;
    font-family: 'Varela Round', sans-serif;
    font-size: clamp(1.5rem, 3vw, 4.5rem);
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1.25;
}

.title-line {
    display: block;
}

.authors {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem 2rem;
    margin-top: 1.4rem;
}

.author-text {
    color: var(--accent);
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    font-weight: 600;
    line-height: 1.7;
    text-decoration: none;
    white-space: nowrap;
}

.author-text:hover,
.author-text:focus-visible {
    text-decoration: underline;
}

.affiliation {
    margin: 0.35rem 0 0;
    font-size: clamp(1.1rem, 2vw, 1.3rem);
}

.equal-contribution {
    margin: 0.2rem 0 0;
    color: var(--muted);
    font-size: clamp(0.9rem, 1.6vw, 1rem);
}

.subheader {
    margin-top: 0;
    margin-bottom: 10px;
    color: #333;
    font-family: 'Open Sans', sans-serif;
    font-size: clamp(1.5rem, 2.5vw, 1.8rem);
    font-weight: 500;
    letter-spacing: 0;
    line-height: 1.3;
    text-align: center;
}

.title-row {
    margin-top: 20px;
}

.base-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
}

.link-block {
    display: inline-block;
    max-width: 33%;
    text-decoration: none;
}

.link-block figure {
    margin: 0.75rem 40px 0.2rem;
}

.link-labels-text {
    color: var(--accent);
    font-family: 'Open Sans', sans-serif;
    font-size: 14px;
}

.add-top-padding {
    margin-top: 10px;
}

.section {
    padding-top: 3.5rem;
}

.teaser-section {
    padding-top: 2.75rem;
}

.section-title {
    margin: 0 0 1rem;
    color: var(--text);
    font-size: clamp(1rem, 2.5vw, 2rem);
    font-weight: 600;
    line-height: 1.3;
    text-align: center;
}

.paragraph,
.method-steps p {
    margin: 0.75rem 0;
    font-size: 16px;
    line-height: 1.65;
    text-align: left;
}

figure {
    margin: 0;
}

.paper-figure {
    display: block;
    width: 100%;
    height: auto;
    margin: 1.25rem auto 0;
}

.teaser-section .paper-figure {
    margin-top: 0;
}

.figure-caption {
    margin-top: 0.9rem;
    color: #444;
    font-size: 14px;
    line-height: 1.55;
    text-align: left;
}

.demo-switcher {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    z-index: 3;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.5rem;
    width: min(90%, 38rem);
    padding: 0.45rem;
    border-radius: 14px;
    background: rgb(255 255 255 / 90%);
    box-shadow: 0 0.15rem 0.9rem rgb(0 0 0 / 10%);
    transform: translateX(-50%);
}

.demo-switcher-button {
    min-height: 3.5rem;
    padding: 0.65rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    color: #555;
    cursor: pointer;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    line-height: 1.35;
    text-align: center;
    transition:
        border-color 160ms ease,
        background-color 160ms ease,
        color 160ms ease;
}

.demo-switcher-button:hover,
.demo-switcher-button:focus-visible {
    border-color: var(--accent);
    color: var(--accent);
}

.demo-switcher-button.active {
    border-color: var(--accent);
    background: #f2f6ff;
    color: var(--accent);
    box-shadow: inset 0 3px 0 var(--accent);
}

.demo-switcher-button:disabled {
    border-color: #ddd;
    background: #f5f5f5;
    color: #aaa;
    cursor: not-allowed;
}

.demo-stage {
    position: relative;
    display: grid;
    place-items: center;
    width: 100%;
    min-height: 640px;
    margin-top: 1rem;
    overflow: hidden;
    border: 1px solid #d5d5d5;
    border-radius: 20px;
    background: var(--demo-background);
}

.demo-stage > p {
    margin: 0;
}

.demo-viewer {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.demo-viewer[hidden] {
    display: none;
}

.demo-viewer canvas,
.demo-viewer canvas:active {
    display: block;
    width: 100%;
    height: 100%;
    cursor: default;
    touch-action: none;
}

.demo-move-hint {
    position: absolute;
    top: 1rem;
    left: 50%;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.75rem 1.15rem;
    border-radius: 10px;
    background: rgb(232 232 232 / 88%);
    box-shadow: 0 0.2rem 1rem rgb(0 0 0 / 12%);
    color: #111;
    font-size: 1rem;
    font-weight: 700;
    transform: translateX(-50%);
    white-space: nowrap;
    backdrop-filter: blur(6px);
    z-index: 3;
}

.move-icon {
    display: block;
    width: 1.25em;
    height: 1.25em;
    object-fit: contain;
}

.contact-impact-controls {
    position: absolute;
    top: 50%;
    left: 1rem;
    z-index: 4;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    width: 11rem;
    padding: 0.75rem;
    border: 1px solid rgb(217 217 217 / 85%);
    border-radius: 14px;
    background: rgb(255 255 255 / 90%);
    box-shadow: 0 0.2rem 1rem rgb(0 0 0 / 12%);
    transform: translateY(-50%);
    backdrop-filter: blur(6px);
}

.contact-impact-controls[hidden] {
    display: none;
}

.contact-impact-title {
    margin: 0 0 0.1rem;
    color: #444;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1.25;
    text-align: center;
    text-transform: uppercase;
}

.contact-impact-button {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    min-height: 2.8rem;
    padding: 0.55rem 0.65rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    color: #444;
    cursor: pointer;
    font: inherit;
    font-size: 0.84rem;
    font-weight: 650;
    line-height: 1.2;
    transition:
        border-color 160ms ease,
        background-color 160ms ease,
        color 160ms ease;
}

.contact-impact-button:hover,
.contact-impact-button:focus-visible {
    border-color: var(--accent);
    color: var(--accent);
}

.contact-impact-button.active {
    border-color: var(--accent);
    background: #f2f6ff;
    color: var(--accent);
    box-shadow: inset 3px 0 0 var(--accent);
}

.contact-impact-button.loading {
    cursor: progress;
    opacity: 0.72;
}

.contact-impact-button:disabled {
    cursor: wait;
    opacity: 0.55;
}

.contact-play-icon {
    display: grid;
    flex: 0 0 1.65rem;
    place-items: center;
    width: 1.65rem;
    height: 1.65rem;
    padding-left: 0.08rem;
    border-radius: 50%;
    background: #eef3fb;
    color: currentColor;
    font-size: 0.66rem;
}

.contact-impact-label {
    white-space: nowrap;
}

.contact-legend {
    display: grid;
    gap: 0.35rem;
    padding-top: 0.6rem;
    border-top: 1px solid #ddd;
    color: #555;
    font-size: 0.67rem;
    line-height: 1.35;
}

.contact-legend p {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    margin: 0;
}

.contact-diamond {
    flex: 0 0 0.62rem;
    width: 0.62rem;
    height: 0.62rem;
    border: 1px solid rgb(0 0 0 / 30%);
    transform: rotate(45deg);
}

.contact-diamond-gt {
    background: #23a455;
}

.contact-diamond-pred {
    background: #2678e8;
}

.contact-legend .contact-heatmap-description {
    align-items: flex-start;
}

.contact-heatmap {
    flex: 0 0 1.15rem;
    width: 1.15rem;
    height: 0.62rem;
    margin-top: 0.12rem;
    border-radius: 2px;
    background: linear-gradient(90deg, #1858c7, #f1df58, #d92d20);
}

.sound-edit-legend {
    position: absolute;
    top: 50%;
    left: 1rem;
    z-index: 4;
    display: grid;
    gap: 0.4rem;
    min-width: 10rem;
    padding: 0.8rem 0.95rem;
    border: 1px solid rgb(217 217 217 / 85%);
    border-radius: 14px;
    background: rgb(255 255 255 / 90%);
    box-shadow: 0 0.2rem 1rem rgb(0 0 0 / 12%);
    pointer-events: none;
    transform: translateY(-50%);
    backdrop-filter: blur(6px);
}

.sound-edit-legend[hidden] {
    display: none;
}

.sound-edit-legend p {
    margin: 0;
}

.sound-edit-legend-title {
    color: #555;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-align: center;
    text-transform: uppercase;
}

.sound-edit-materials {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    color: #222;
    font-size: 0.9rem;
    font-weight: 700;
    white-space: nowrap;
}

.sound-edit-arrow {
    color: var(--accent);
    font-size: 1.15em;
}

.impact-marker {
    position: absolute;
    z-index: 4;
    width: 1.5rem;
    height: 1.5rem;
    border: 3px solid #fff;
    border-radius: 50%;
    background: rgb(72 138 243 / 55%);
    box-shadow:
        0 0 0 3px var(--accent),
        0 0 1.5rem rgb(72 138 243 / 90%);
    pointer-events: none;
    transform: translate(-50%, -50%);
}

.impact-marker.pulse {
    animation: impact-pulse 550ms ease-out forwards;
}

@keyframes impact-pulse {
    from {
        opacity: 1;
        transform: translate(-50%, -50%) scale(0.45);
    }
    to {
        opacity: 0;
        transform: translate(-50%, -50%) scale(2.4);
    }
}

.object-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    width: 100%;
    max-width: 49rem;
    margin: 1.25rem auto 0;
}

.object-training-note {
    margin: 0.65rem 0 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.4;
    text-align: center;
}

.object-card {
    flex: 0 0 9rem;
    display: block;
    width: 9rem;
    height: 9rem;
    padding: 0rem;
    border: 2px solid transparent;
    border-radius: 14px;
    background: var(--demo-background);
    cursor: pointer;
}

.object-card.active {
    border-color: var(--accent);
}

.object-card.loading {
    border-color: #f2b84b;
    cursor: wait;
}

.object-card:disabled {
    cursor: wait;
    opacity: 0.72;
}

.object-thumbnail {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 12px;
    background: transparent;
    object-fit: contain;
}

.method-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1.25rem;
}

.method-steps p {
    margin: 0;
    padding: 1rem;
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    background: #fafafa;
}

.failure-case {
    margin-top: 2rem;
}

.failure-case h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.failure-case + .failure-case {
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

.citation {
    padding-top: 3px;
    border-radius: 10px;
    background-color: #eaeaea;
    text-align: left;
}

.citation > h1 {
    margin-top: 10px;
    margin-bottom: -10px;
    margin-left: 10px;
    padding: 10px;
    font-size: 24px;
    line-height: 20px;
}

.citation > pre {
    margin-top: 0;
    margin-bottom: 10px;
    margin-left: 10px;
    padding: 10px;
}

.citation > p {
    margin-left: 20px;
}

#codecell0 {
    margin-bottom: 10px;
    margin-left: 10px;
    overflow-y: scroll;
    font-size: 14px;
    line-height: 20px;
}

.site-footer {
    width: min(100%, var(--page-max-width));
    margin: 0 auto 0;
    padding: 1rem 0 0;
    border-top: 1px solid #eee;
    color: var(--muted);
    font-size: 1rem;
    text-align: center;
}

.site-footer p {
    margin: 0;
}

.site-footer a {
    color: inherit;
}

@media (max-width: 768px) {
    body {
        padding: 1.25em;
    }

    .section {
        padding-top: 2.75rem;
    }

    .method-steps {
        grid-template-columns: 1fr;
    }

    .demo-switcher {
        gap: 0.5rem;
        width: calc(100% - 1.5rem);
        padding: 0.35rem;
    }

    .demo-switcher-button {
        min-height: 3.75rem;
        padding: 0.6rem;
        font-size: 0.78rem;
    }

    .demo-stage {
        min-height: 480px;
    }

    .contact-impact-controls {
        top: 4.75rem;
        left: 0.75rem;
        width: 10.5rem;
        padding: 0.6rem;
        transform: none;
    }

    .contact-impact-title {
        font-size: 0.68rem;
    }

    .contact-impact-button {
        min-height: 2.55rem;
        padding: 0.45rem 0.5rem;
        font-size: 0.76rem;
    }

    .sound-edit-legend {
        top: 4.75rem;
        left: 0.75rem;
        min-width: 8.75rem;
        padding: 0.65rem 0.75rem;
        transform: none;
    }

    .sound-edit-materials {
        gap: 0.4rem;
        font-size: 0.78rem;
    }

    .object-card {
        flex-basis: 7.5rem;
        width: 7.5rem;
        height: 7.5rem;
        padding: 0rem;
    }

}