:root {
    color-scheme: light;
    --background: #ffffff;
    --surface: #f6f7f9;
    --border: #d9dde4;
    --text: #1d2433;
    --muted: #5e6878;
    --accent: #2457a7;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 76px;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.55;
}

main {
    width: min(1440px, calc(100% - 64px));
    margin: 0 auto;
    padding: 88px 0 80px;
}

.page-content {
    min-width: 0;
}

#pipeline-title,
#comparison-title,
#additional-title,
#acknowledgment-title,
#bibtex-title,
.scene,
.additional-card {
    scroll-margin-top: 24px;
}

.section-nav {
    position: fixed;
    z-index: 10;
    inset: 0 0 auto;
    display: flex;
    min-height: 56px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 0 32px;
    border-bottom: 1px solid rgb(17 17 17 / 7%);
    background: rgb(255 255 255 / 95%);
}

.section-nav a {
    padding: 8px 10px;
    color: #505050;
    font-family: "Google Sans", "Noto Sans", Arial, sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
}

.section-nav a:hover {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.section-nav .site-mark {
    color: var(--text);
    font-size: 0.85rem;
    font-weight: 700;
}

.section-links {
    display: flex;
    min-width: 0;
    justify-content: flex-end;
    gap: 4px;
}

.page-header {
    max-width: 1280px;
    margin: 0 auto 56px;
    text-align: center;
}

.brand-lockup {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

.project-wordmark {
    width: 360px;
    max-width: 80vw;
    height: auto;
    flex: none;
    object-fit: contain;
}

.publication-authors {
    font-family: "Google Sans", "Noto Sans", Arial, sans-serif;
    font-size: 1.25rem;
    line-height: 1.5;
}

.author-names {
    margin-top: 20px;
}

.author-block {
    display: inline-block;
}

.publication-authors a {
    color: var(--accent);
    text-decoration: none;
}

.publication-authors a:hover {
    text-decoration: underline;
}

.author-affiliations {
    color: var(--text);
}

.publication-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
}

.publication-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 40px;
    padding: 8px 18px;
    border-radius: 999px;
    background: #363636;
    color: #ffffff;
    font-family: "Google Sans", "Noto Sans", Arial, sans-serif;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
}

.publication-icon {
    width: 18px;
    height: 18px;
    flex: none;
    fill: none;
    stroke: currentcolor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
}

.publication-brand-icon {
    width: 18px;
    flex: none;
    font-size: 1.2rem;
    line-height: 1;
}

a.publication-button:hover {
    background: #1f1f1f;
}

.publication-button.is-disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

.publication-title {
    margin-bottom: 0;
    font-family: "Google Sans", "Noto Sans", Arial, sans-serif;
    font-size: 3rem;
    font-weight: 600;
    line-height: 1.125;
    white-space: nowrap;
}

h2 {
    margin-bottom: 8px;
    font-size: clamp(1.55rem, 3vw, 2.15rem);
}

.section-title {
    margin-bottom: 24px;
    font-family: "Google Sans", "Noto Sans", Arial, sans-serif;
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.125;
    scroll-margin-top: 24px;
    text-align: center;
}

h3 {
    margin-bottom: 14px;
    font-size: 1.25rem;
}

section + section {
    margin-top: 72px;
}

.teaser-figure {
    width: min(1100px, 100%);
    margin: 0 auto 72px;
}

.teaser-note {
    margin-bottom: 16px;
    text-align: center;
}

.project-introduction {
    max-width: 1100px;
    margin: 0 auto 72px;
}

.project-tldr {
    margin: 0 0 28px;
    padding: 12px 16px;
    border-radius: 6px;
    background: #f2f3f5;
    color: #4a4f58;
    font-family: "Google Sans", "Noto Sans", Arial, sans-serif;
    font-size: 1rem;
}

.pipeline-figure {
    margin: 0;
}

.pipeline-preview {
    position: relative;
    width: 100%;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface);
}

.pipeline-preview img,
.pipeline-preview video {
    display: block;
    width: 100%;
    height: auto;
}

.pipeline-preview a {
    position: absolute;
    inset: 0;
    cursor: zoom-in;
}

.pipeline-preview a::after {
    position: absolute;
    z-index: 1;
    bottom: 16px;
    left: 50%;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgb(29 36 51 / 88%);
    color: #ffffff;
    content: "Click to Zoom In";
    font-family: "Google Sans", "Noto Sans", Arial, sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 6px);
    transition: opacity 160ms ease, transform 160ms ease;
    white-space: nowrap;
}

.pipeline-preview:hover a::after,
.pipeline-preview a:focus-visible::after {
    opacity: 1;
    transform: translate(-50%, 0);
}

.pipeline-preview:hover,
.pipeline-preview:focus-within {
    border-color: var(--accent);
    box-shadow: 0 4px 14px rgb(29 36 51 / 14%);
}

.pipeline-preview a:focus-visible {
    outline: 3px solid rgb(36 87 167 / 32%);
    outline-offset: -3px;
}

.pipeline-figure figcaption {
    margin-top: 14px;
    color: var(--text);
    font-weight: 400;
    line-height: 1.6;
    text-align: justify;
}

.pipeline-figure .math-expression {
    font-family: "Times New Roman", Times, serif;
}

.pipeline-figure figcaption strong {
    font-weight: 700;
}

.publication-content {
    max-width: 960px;
    margin: 0 auto;
}

.bibtex {
    margin: 0;
    padding: 20px 24px;
    overflow-x: auto;
    border-radius: 6px;
    background: var(--surface);
    color: #363636;
    font-size: 0.9rem;
    line-height: 1.5;
    white-space: pre;
}

.site-footer {
    width: min(960px, calc(100% - 64px));
    margin: 0 auto;
    padding: 28px 0 40px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.95rem;
    text-align: center;
}

.site-footer p {
    margin-bottom: 0;
}

.site-footer a {
    color: var(--accent);
    text-decoration: none;
}

.site-footer a:hover {
    text-decoration: underline;
}

.intro,
.section-note,
.caption,
.empty-state,
.sync-status {
    color: var(--muted);
}

.section-note {
    max-width: 920px;
    margin-bottom: 28px;
}

.scene {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
}

.scene + .scene {
    margin-top: 28px;
}

.scene-top-row {
    display: grid;
    grid-template-columns: 260px max-content;
    gap: 32px;
    align-items: center;
    margin-bottom: 24px;
}

.comparison-top-row {
    display: grid;
    width: min(910px, 100%);
    grid-template-columns: minmax(0, 352px) minmax(0, 542px);
    gap: 16px;
    align-items: start;
    margin: 0 auto 10px;
}

.comparison-top-row figure {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.comparison-top-row figcaption {
    display: flex;
    height: 3em;
    align-items: flex-end;
    justify-content: center;
    font-size: 1.25rem;
}

.viser-figure figcaption {
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
}

.viser-interaction-hint {
    color: var(--muted);
    font-size: 0.7rem;
    font-weight: 400;
    line-height: 1.2;
}

.comparison-top-row .input-figure {
    width: 100%;
}

.comparison-top-row .media-frame,
.viser-frame {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 7px;
    background: #000000;
}

.comparison-top-row .media-frame {
    flex: none;
}

.comparison-top-row .input-video {
    height: 100%;
    object-fit: contain;
}

.viser-frame iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
}

.interactive-controls {
    display: grid;
    width: min(1100px, 100%);
    grid-template-columns: auto auto auto minmax(0, 1fr);
    gap: 14px;
    align-items: center;
    margin: 0 auto 14px;
}

.interactive-play-button {
    border-color: var(--accent);
    border-radius: 999px;
    background: var(--accent);
    color: #ffffff;
}

.interactive-play-button:hover {
    border-color: var(--accent);
    background: var(--accent);
    color: #ffffff;
}

.interactive-play-button.is-playing,
.interactive-play-button.is-playing:hover {
    border-color: #363636;
    background: #ffffff;
    color: #363636;
}

.interactive-reset-camera-button {
    width: 132px;
    border-color: #363636;
    border-radius: 999px;
    background: #ffffff;
    color: #363636;
}

.interactive-reset-camera-button:hover {
    border-color: #1f1f1f;
    background: #f5f5f5;
}

.interactive-timeline {
    width: 100%;
    accent-color: var(--accent);
}

.comparison-toggle {
    display: flex;
    width: min(440px, 100%);
    height: 44px;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 6px auto 0;
    padding: 0 16px;
    border: 1px solid var(--accent);
    border-radius: 999px;
    background: var(--accent);
    color: #ffffff;
}

.comparison-toggle:hover {
    border-color: var(--accent);
    background: var(--accent);
    color: #ffffff;
}

.comparison-toggle-label {
    flex: 1;
    text-align: center;
}

.comparison-toggle-icon {
    display: flex;
    width: 26px;
    height: 26px;
    flex: none;
    align-items: center;
    justify-content: center;
    border: 1px solid rgb(255 255 255 / 70%);
    border-radius: 50%;
    background: transparent;
    color: #ffffff;
    font-size: 1.2rem;
    line-height: 1;
    transition: border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.comparison-toggle:hover .comparison-toggle-icon {
    border-color: #ffffff;
}

.comparison-toggle[aria-expanded="true"] {
    border-color: var(--border);
    background: #ffffff;
    color: var(--text);
}

.comparison-toggle[aria-expanded="true"]:hover {
    border-color: var(--accent);
    background: #edf3fc;
    color: var(--accent);
}

.comparison-toggle[aria-expanded="true"] .comparison-toggle-icon {
    border-color: var(--border);
    background: #ffffff;
    color: var(--text);
    transform: rotate(180deg);
}

.comparison-toggle[aria-expanded="true"]:hover .comparison-toggle-icon {
    border-color: var(--accent);
    color: var(--accent);
}

.comparison-disclosure {
    padding-top: 14px;
}

.shared-controls.comparison-controls {
    width: min(1100px, 100%);
    flex-direction: row;
    align-items: center;
    gap: 16px;
    margin: 0 auto 20px;
}

.comparison-controls .control-row {
    flex: none;
}

.comparison-controls .timeline-row {
    min-width: 0;
    flex: 1;
}

.comparison-controls .timeline {
    width: 100%;
}

.input-figure {
    width: 260px;
}

.input-figure figcaption {
    font-size: 1.25rem;
    text-align: center;
}

.shared-controls {
    display: flex;
    width: 440px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}

.control-row,
.timeline-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.fps-control {
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.fps-select {
    width: 62px;
    height: 38px;
    border: 1px solid #b8c0cc;
    border-radius: 7px;
    background: #ffffff;
    color: var(--text);
    font: inherit;
}

button {
    width: 92px;
    height: 38px;
    padding: 0;
    border: 1px solid #b8c0cc;
    border-radius: 7px;
    background: #ffffff;
    color: var(--text);
    cursor: pointer;
    font: inherit;
    font-weight: 600;
}

button:hover {
    border-color: var(--accent);
}

.play-button,
.reset-button {
    border-radius: 999px;
}

.play-button,
.play-button:hover {
    border-color: var(--accent);
    background: var(--accent);
    color: #ffffff;
}

.play-button.is-playing,
.play-button.is-playing:hover {
    border-color: #363636;
    background: #ffffff;
    color: #363636;
}

.reset-button {
    border-color: #363636;
    background: #ffffff;
    color: #363636;
}

.reset-button:hover {
    border-color: #1f1f1f;
    background: #f5f5f5;
}

.loop-button {
    width: 72px;
    border-color: #363636;
    border-radius: 999px;
    background: #ffffff;
    color: #363636;
}

.loop-button.is-enabled {
    border-color: var(--accent);
    background: var(--accent);
    color: #ffffff;
}

.loop-button:hover {
    border-color: #1f1f1f;
}

.loop-button.is-enabled:hover {
    border-color: var(--accent);
    background: var(--accent);
}

.loop-button:disabled {
    cursor: not-allowed;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 3px solid rgb(36 87 167 / 25%);
    outline-offset: 2px;
}

.timeline {
    width: 340px;
    flex: none;
    accent-color: var(--accent);
}

.comparison-scroll {
    overflow-x: auto;
}

.comparison-grid,
.additional-result-grid {
    display: grid;
    gap: 12px;
}

.comparison-grid {
    grid-template-columns: repeat(4, minmax(310px, 1fr));
    min-width: 1300px;
}

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

figure {
    margin: 0;
}

.comparison-grid figure,
.additional-result-grid figure {
    display: flex;
    flex-direction: column;
}

figcaption {
    margin-bottom: 7px;
    font-weight: 700;
    text-align: center;
}

video {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 7px;
    background: #000000;
    object-fit: contain;
}

.media-frame {
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: center;
}

.input-video {
    width: 100%;
    height: auto;
}

.video-placeholder {
    width: 100%;
    aspect-ratio: 16 / 9;
}

.caption {
    margin: 14px 0 0;
    font-size: 0.93rem;
}

.scene-highlight {
    margin: 18px 0 0;
    padding: 10px 12px;
    border-left: 3px solid var(--accent);
    background: #ffffff;
    font-size: 0.95rem;
}

.additional-card .scene-highlight {
    min-height: 68px;
}

.scene-highlight strong {
    color: var(--accent);
}

.sync-status {
    margin: 12px 0 0;
    font-size: 0.85rem;
}

.sync-status:empty {
    display: none;
}

.sync-status.warning {
    color: #9b3b16;
}

.additional-card {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
}

#comparison-scenes {
    width: min(960px, 100%);
    margin: 0 auto;
}

#comparison-scenes:has(.additional-card:not([hidden]) .comparison-disclosure:not([hidden])) {
    width: 100%;
}

.additional-carousel-header {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 14px;
}

.sliding-mode-button {
    width: 136px;
    border: 1px solid #363636;
    border-radius: 999px;
    background: #ffffff;
    color: #363636;
    font-family: "Google Sans", "Noto Sans", Arial, sans-serif;
    font-weight: 600;
}

.sliding-mode-button.is-auto {
    border-color: var(--accent);
    background: var(--accent);
    color: #ffffff;
}

.sliding-mode-button.is-auto:hover {
    border-color: var(--accent);
    background: var(--accent);
    color: #ffffff;
}

.sliding-mode-button:not(.is-auto):hover {
    border-color: #1f1f1f;
    background: #f5f5f5;
    color: #1f1f1f;
}

.additional-carousel {
    position: relative;
}

.additional-carousel-track {
    position: relative;
    overflow: hidden;
}

.additional-card.is-leaving,
.additional-card.is-entering {
    animation-duration: 300ms;
    animation-fill-mode: both;
    animation-timing-function: ease;
    will-change: transform;
}

.additional-card.is-leaving {
    position: absolute;
    z-index: 1;
    inset: 0;
    width: 100%;
    animation-name: slide-out-left;
}

.additional-card.is-entering {
    animation-name: slide-in-right;
}

.additional-carousel-track.slide-previous .additional-card.is-leaving {
    animation-name: slide-out-right;
}

.additional-carousel-track.slide-previous .additional-card.is-entering {
    animation-name: slide-in-left;
}

@keyframes slide-out-left {
    from { transform: translateX(0); }
    to { transform: translateX(-100%); }
}

@keyframes slide-in-right {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

@keyframes slide-out-right {
    from { transform: translateX(0); }
    to { transform: translateX(100%); }
}

@keyframes slide-in-left {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

.carousel-arrow {
    position: absolute;
    z-index: 2;
    top: 50%;
    width: 42px;
    height: 42px;
    border-color: var(--border);
    border-radius: 50%;
    box-shadow: 0 2px 8px rgb(29 36 51 / 16%);
    font-size: 1.8rem;
    line-height: 1;
    transform: translateY(-50%);
}

.carousel-arrow:hover {
    transform: translateY(-50%) scale(1.08);
}

.carousel-arrow-previous {
    left: -21px;
}

.carousel-arrow-next {
    right: -21px;
}

.carousel-thumbnails {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 8px;
    margin-top: 16px;
}

.comparison-thumbnails {
    width: min(720px, 100%);
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-right: auto;
    margin-left: auto;
}

.carousel-thumbnail {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    padding: 3px;
    overflow: hidden;
    border: 3px solid transparent;
    border-radius: 7px;
    background: #e7ebf1;
    box-shadow: 0 1px 3px rgb(29 36 51 / 12%);
    transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.carousel-thumbnail:hover {
    border-color: #8fa9d2;
    box-shadow: 0 3px 8px rgb(29 36 51 / 18%);
    transform: translateY(-2px);
}

.carousel-thumbnail[aria-current="true"] {
    border-color: var(--accent);
    background: #ffffff;
    box-shadow: 0 0 0 1px var(--accent);
}

.carousel-thumbnail-video {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 3px;
    object-fit: cover;
    pointer-events: none;
}

.additional-scroll {
    overflow-x: visible;
}

.empty-state {
    padding: 20px;
    border: 1px dashed var(--border);
    border-radius: 9px;
    background: var(--surface);
}

@media (max-width: 1200px) {
    .publication-title {
        font-size: 2rem;
    }
}

@media (max-width: 900px) {
    .publication-title {
        white-space: normal;
    }

    .additional-result-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .section-nav {
        min-height: 54px;
        padding: 8px 12px;
    }

    .section-links {
        flex: 1;
        justify-content: flex-start;
        overflow-x: auto;
    }

    .section-nav a {
        flex: none;
        padding: 7px;
        font-size: 0.75rem;
    }

    main {
        width: calc(100% - 24px);
        padding-top: 80px;
    }

    .scene {
        padding: 16px;
    }

    .project-wordmark {
        width: 260px;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .site-footer {
        width: calc(100% - 24px);
    }

    .scene-top-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .comparison-top-row {
        width: min(542px, 100%);
        grid-template-columns: 1fr;
    }

    .comparison-top-row .input-figure {
        width: min(352px, 100%);
        justify-self: center;
    }

    .interactive-controls {
        grid-template-columns: 1fr;
    }

    .input-figure {
        width: 260px;
        max-width: 100%;
    }

    .shared-controls {
        width: 100%;
    }

    .shared-controls.comparison-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .control-row {
        flex-wrap: wrap;
    }

    .timeline-row,
    .timeline {
        width: 100%;
    }

    .additional-card {
        padding: 16px;
    }

    .carousel-arrow-previous {
        left: 6px;
    }

    .carousel-arrow-next {
        right: 6px;
    }
}

@media (max-width: 520px) {
    .additional-result-grid {
        grid-template-columns: 1fr;
    }

    .carousel-thumbnails {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 6px;
    }

    .additional-card .scene-highlight {
        min-height: 92px;
    }
}