:root {
  --bg-0: #090a0d;
  --bg-1: #10131a;
  --ink-0: #f5f2ec;
  --ink-1: #d8d3c8;
  --line: rgba(255, 255, 255, 0.18);
  --panel-bg: rgba(10, 10, 11, 0.54);
  --accent-0: #ffca83;
  --accent-1: #ff7f52;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: radial-gradient(circle at 14% -8%, #352219 0%, var(--bg-0) 32%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1));
  color: var(--ink-0);
  font-family: "Manrope", "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

.site-hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  display: grid;
  align-items: end;
}

.site-hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.45s ease, filter 0.35s ease, transform 0.35s ease;
}

.site-hero-placeholder {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(180deg, rgba(6, 6, 7, 0.45) 0%, rgba(6, 6, 7, 0.68) 100%),
    url("../images/trailercollageV3.jpg");
  background-size: cover;
  background-position: center;
  transition: opacity 0.45s ease;
  pointer-events: none;
}

.site-hero.is-video-ready .site-hero-video {
  opacity: 1;
}

.site-hero.is-video-ready .site-hero-placeholder {
  opacity: 0;
}

.site-hero.is-video-ready.is-video-transitioning .site-hero-video {
  opacity: 0;
}

.site-hero.is-video-ready.is-video-transitioning .site-hero-placeholder {
  opacity: 1;
}

.site-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0) 0%,
    rgba(0, 0, 0, 0.05) 50%,
    rgba(0, 0, 0, 0.45) 100%
  );
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.site-grid-noise {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image: linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0), #000 30%, #000 100%);
  transition: opacity 0.35s ease;
}

.site-nav {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  z-index: 4;
  max-width: calc(100vw - 20px);
  transition: opacity 0.25s ease;
}

.site-nav a {
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(8, 8, 9, 0.5);
  color: var(--ink-1);
}

.site-nav a:hover {
  color: var(--ink-0);
}

.site-hero-content {
  position: relative;
  z-index: 3;
  width: min(1680px, 96vw);
  margin: 0 auto 14px;
  padding: clamp(8px, 1.3vw, 14px) clamp(14px, 2vw, 22px);
  border: 0;
  border-radius: 0;
  background: linear-gradient(180deg, rgba(10, 10, 11, 0), rgba(10, 10, 11, 0.52));
  transition: opacity 0.25s ease;
}

.kicker {
  margin: 0;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--ink-1);
}

.site-hero h1 {
  margin: 10px 0;
  font-family: "Bebas Neue", Impact, sans-serif;
  font-size: clamp(2.5rem, 5.5vw, 5rem);
  letter-spacing: 0.012em;
  line-height: 0.98;
  max-width: 100%;
  width: 100%;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
}

.subtitle {
  margin: 0;
  max-width: 84ch;
  color: var(--ink-1);
  line-height: 1.55;
}

.subtitle:empty {
  display: none;
}

.hero-authors {
  margin: 8px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  row-gap: 4px;
  color: var(--ink-0);
  max-width: 95%;
}

.author-item {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.author-item sup {
  color: var(--accent-0);
  font-size: 0.65em;
  margin-left: 2px;
}

.author-sep {
  color: var(--ink-1);
  margin-right: 8px;
}

.hero-affiliations {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-author-notes {
  margin: 8px 0 0;
  font-size: 0.74rem;
  color: var(--ink-1);
  letter-spacing: 0.02em;
}

.affiliation-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 12px;
  padding: 5px 10px 5px 8px;
  background: rgba(7, 7, 8, 0.58);
  color: var(--ink-1);
  font-size: 0.76rem;
}

.affiliation-badge {
  border-radius: 999px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  padding: 0;
  font-size: 0.67rem;
  letter-spacing: 0;
  font-weight: 800;
  background: linear-gradient(130deg, var(--accent-0), var(--accent-1));
  color: #1a100c;
}

.affiliation-logo-wrap {
  width: auto;
  height: 24px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  padding: 2px 4px;
}

.affiliation-logo {
  max-width: none;
  height: 100%;
  object-fit: contain;
}

.hero-actions {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-actions a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  border-radius: 999px;
  padding: 8px 13px;
  border: 1px solid transparent;
  background: linear-gradient(130deg, var(--accent-0), var(--accent-1));
  color: #1a100c;
  font-weight: 800;
}

.hero-actions .ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink-0);
}

.hero-top-actions {
  position: absolute;
  right: 18px;
  top: 18px;
  z-index: 6;
  display: flex;
  gap: 8px;
  align-items: center;
}

.hero-popout-trigger {
  border: 1px solid rgba(255, 202, 131, 0.92);
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(10, 10, 11, 0.68);
  color: var(--ink-0);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.68rem;
  cursor: pointer;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.hero-popout-trigger:hover {
  transform: translateY(-1px);
}

.hero-full-download {
  text-decoration: none;
  border: 1px solid rgba(255, 202, 131, 0.92);
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(10, 10, 11, 0.68);
  color: var(--ink-0);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.68rem;
  font-weight: 700;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.hero-full-download:hover {
  transform: translateY(-1px);
}

.hero-popout-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 8;
  display: none;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  background: rgba(7, 7, 8, 0.72);
  color: var(--ink-0);
  font-size: 1.7rem;
  line-height: 1;
  cursor: pointer;
}

.scroll-cue {
  position: absolute;
  bottom: 24px;
  right: 50%;
  transform: translateX(50%);
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  text-decoration: none;
  border-radius: 50%;
  background: rgba(10, 10, 11, 0.4);
  color: var(--ink-0);
  z-index: 4;
  transition: background 0.25s ease;
  animation: cue 2s ease-in-out infinite;
}

.scroll-cue:hover {
  background: rgba(10, 10, 11, 0.8);
}

.scroll-cue-arrow {
  width: 24px;
  height: 24px;
}

.site-hero.is-video-popout .site-hero-content,
.site-hero.is-video-popout .site-nav,
.site-hero.is-video-popout .scroll-cue,
.site-hero.is-video-popout .hero-top-actions {
  opacity: 0;
  pointer-events: none;
}

.site-hero.is-video-popout .hero-popout-close {
  display: grid;
}

.site-hero.is-video-popout .site-grid-noise,
.site-hero.is-video-popout .site-hero-overlay {
  opacity: 0;
}

.site-hero.is-video-popout .site-hero-video {
  z-index: 7;
  object-fit: contain;
  background: #000;
  filter: contrast(1.12) brightness(1.06);
}

main {
  width: min(1120px, 92vw);
  margin: 36px auto 80px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  background: var(--panel-bg);
  backdrop-filter: blur(8px);
  margin-top: 16px;
}

.panel-head h2 {
  margin: 0;
  font-family: "Bebas Neue", Impact, sans-serif;
  letter-spacing: 0.05em;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
}

.panel-head p {
  margin: 4px 0 0;
  color: var(--ink-1);
}

#abstract-text {
  margin: 8px 0 0;
  line-height: 1.8;
  color: var(--ink-1);
}

.abstract-video-player {
  margin: 14px auto 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: #050506;
  width: min(100%, 980px);
  aspect-ratio: 16 / 9;
}

.abstract-video-player iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.action-icon,
.youtube-icon {
  display: inline-flex;
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
}

.action-icon svg,
.youtube-icon svg {
  display: block;
}

.dataset-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.dataset-grid img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  margin-bottom: 20px;
}

.dataset-grid ul {
  margin: 0 0 12px;
  padding-left: 18px;
  color: var(--ink-1);
  line-height: 1.7;
}

.compare-grid {
  margin-top: 12px;
  display: grid;
  gap: 14px;
}





.qual-card video {
  width: 100%;
  display: block;
  border-bottom: 1px solid var(--line);
}

.qual-card p {
  margin: 0;
  padding: 8px 10px;
  font-size: 0.82rem;
  color: var(--ink-1);
}

.method-cards {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.method-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: rgba(9, 9, 9, 0.62);
}

.method-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.method-card p {
  margin: 0;
  line-height: 1.65;
  color: var(--ink-1);
  font-size: 0.88rem;
}

.pipeline-container {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.pipeline-container figure {
  margin: 0;
  text-align: center;
}

.pipeline-container img {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.95);
  padding: 8px;
}

.pipeline-container figcaption {
  margin-top: 12px;
  color: var(--ink-1);
  font-size: 0.95rem;
  text-align: left;
  line-height: 1.6;
}

.sound-field-figure {
  width: 100%;
  margin: 20px 0 0 0;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 20px;
}

.sound-field-figure img {
  width: 100%;
  margin: 0;
}

.dataset-top img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  margin-bottom: 20px;
}

.dataset-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.dataset-bottom img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.pipeline-description p,
.dataset-description p {
  color: var(--ink-1);
  line-height: 1.7;
}

.embed-switches {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
}

.embed-host iframe,
.embed-host video,
.embed-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  object-fit: cover2px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  cursor: pointer;
}

.embed-switches button.is-active {
  background: linear-gradient(130deg, var(--accent-0), var(--accent-1));
  color: #1a100c;
  border-color: transparent;
}

.embed-host {
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(5, 5, 5, 0.5);
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
}

.embed-host iframe,
.embed-host video,
.embed-placeholder {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.embed-placeholder {
  padding: 20px;
  color: var(--ink-1);
  display: grid;
  place-items: center;
  text-align: center;
  line-height: 1.7;
}

.bilibili-direct-link {
  display: inline-block;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-0);
}

#bibtex-block {
  margin: 8px 0 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.32);
  padding: 12px;
  color: #ffd8b1;
  overflow-x: auto;
}

footer {
  width: min(1120px, 92vw);
  margin: 0 auto 30px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

footer p {
  margin: 0;
  color: var(--ink-1);
  font-size: 0.8rem;
}

@keyframes cue {
  0% {
    transform: translateY(-1px);
  }
  50% {
    transform: translateY(7px);
  }
  100% {
    transform: translateY(-1px);
  }
}

@media (max-width: 980px) {
  .dataset-grid,
  .dataset-bottom,
  .sound-field-figure,
  .method-cards {
    grid-template-columns: 1fr;
  }

  .dataset-bottom {
    gap: 14px;
  }

  .dataset-info {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(8, 8, 9, 0.45);
    padding: 12px;
  }

  .dataset-description p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.75;
  }

  #dataset-bullets {
    margin: 10px 0 0;
    padding-left: 18px;
    line-height: 1.65;
  }

  #dataset-bullets li {
    margin-bottom: 6px;
  }

  .site-hero-content {
    margin-bottom: 12px;
    width: 95vw;
    padding: 10px 10px 14px;
  }

  .site-hero h1 {
    font-size: clamp(1.72rem, 9vw, 2.5rem);
  }

  .hero-popout-trigger {
    padding: 8px 11px;
    font-size: 0.62rem;
  }

  .hero-full-download {
    padding: 8px 11px;
    font-size: 0.62rem;
  }

  .hero-top-actions {
    right: 10px;
    top: 10px;
    gap: 6px;
  }

  .hero-popout-close {
    top: 10px;
    right: 10px;
    width: 42px;
    height: 42px;
    font-size: 1.45rem;
  }

  .scroll-cue {
    width: 40px;
    height: 40px;
    bottom: 20px;
  }

  .scroll-cue-arrow {
    width: 20px;
    height: 20px;
  }
}


.qual-carousel-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.qual-grid {
  display: flex !important;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none; /* Firefox */
  padding-bottom: 4px;
}

.qual-grid::-webkit-scrollbar {
  display: none;
}

.qual-card {
  flex: 0 0 calc(33.333% - 8px);
  scroll-snap-align: start;
}

@media (max-width: 980px) {
  
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: rgba(10, 10, 11, 0.7);
  color: white;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
}

.carousel-btn.left {
  left: -20px;
}

.carousel-btn.right {
  right: -20px;
}

@media (max-width: 980px) {
  .qual-card {
    flex: 0 0 calc(100% - 10px) !important;
  }
}

.compare-mode-tabs, .compare-scene-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.mode-tab, .scene-tab {
  background: var(--surface-bg, #1a1a1c);
  color: var(--text-secondary, #a1a1aa);
  border: 1px solid var(--border-color, #27272a);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}
.mode-tab.is-active, .scene-tab.is-active {
  background: var(--text-primary, #fff);
  color: var(--bg-primary, #0a0a0b);
  border-color: var(--text-primary, #fff);
  font-weight: 500;
}
.mode-tab:hover:not(.is-active), .scene-tab:hover:not(.is-active) {
  background: var(--border-color, #27272a);
  color: var(--text-primary, #fff);
}

.compare-stage img[data-base-media], .compare-stage img[data-overlay-media] {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}