:root {
  --bg: #000;
  --fg: #fff;
  --muted: #b0b0b0;
  --muted-2: #8c8c8c;
  --card: #111;
  --card-2: #0b0b0b;
  --border: rgba(255, 255, 255, 0.12);
  --border-2: rgba(255, 255, 255, 0.08);
  --accent: #fff;
  --accent-fg: #000;
  --radius: 16px;
  --media-radius: 10px;
  --shadow: 0 10px 30px rgba(255, 255, 255, 0.06);
  --container: 1200px;
  --font: "Open Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
video {
  display: block;
  max-width: 100%;
}

video {
  color-scheme: dark;
  accent-color: rgba(255, 255, 255, 0.86);
}

video::-webkit-media-controls-overlay-enclosure {
  background-color: transparent !important;
}

video::-webkit-media-controls-panel,
video::-webkit-media-controls-enclosure {
  background-color: transparent !important;
}

video:hover::-webkit-media-controls-control-bar {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 12px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

video:hover::-webkit-media-controls-current-time-display,
video:hover::-webkit-media-controls-time-remaining-display {
  color: rgba(255, 255, 255, 0.84);
}

video:hover::-webkit-media-controls-play-button,
video:hover::-webkit-media-controls-mute-button,
video:hover::-webkit-media-controls-fullscreen-button {
  color: rgba(255, 255, 255, 0.92);
}

strong {
  font-weight: 700;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(16px);
  background: rgba(0, 0, 0, 0.6);
  border-bottom: 1px solid var(--border-2);
}

.top-nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.top-nav-left {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
}

.top-nav-title {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.2px;
  text-decoration: none;
}

.top-nav-title #logo {
  width: 20px;
  height: 20px;
  display: block;
}

.top-nav-context {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
}

.top-nav-enables {
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  white-space: nowrap;
}

.top-nav-task {
  background: transparent;
  border: 0;
  padding: 0 6px 0 0;
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
  color: rgba(255, 255, 255, 0.9);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 52vw;
  position: relative;
}

.top-nav-title:hover,
.top-nav-title:focus-visible,
.top-nav-task:focus-visible {
  text-decoration: none;
}

.top-nav-task:hover {
  color: rgba(255, 255, 255, 0.98);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.top-nav-task:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.28);
  outline-offset: 3px;
  border-radius: 8px;
}

.top-nav-task:after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1.5px;
  height: 1em;
  background: rgba(255, 255, 255, 0.84);
  opacity: 1;
  animation: caretBlink 1s steps(1, end) infinite;
}

@keyframes caretBlink {
  50% {
    opacity: 0;
  }
}

.top-nav-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
  position: relative;
}

.top-nav-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.92);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex: 0 0 auto;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.top-nav-menu-icon {
  display: inline-flex;
  width: 18px;
  height: 14px;
  flex-direction: column;
  justify-content: space-between;
}

.top-nav-menu-icon span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.pill-button {
  outline: none;
  position: relative;
  display: inline-block;
  white-space: nowrap;
  text-align: center;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
  user-select: none;
  touch-action: manipulation;
  font-size: 14px;
  line-height: 1.5;
  height: 38px;
  color: #fff;
  background: #2a2a2a;
  border-radius: 999px;
  padding-inline-start: 18px;
  padding-inline-end: 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.pill-button:hover {
  background: #000;
  border-color: rgba(255, 255, 255, 0.25);
}

.pill-button-strong {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.04), 0 10px 26px rgba(0, 0, 0, 0.35);
}

.pill-button-strong:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.28);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.92);
}

.btn-icon-right {
  margin-left: -2px;
  color: rgba(255, 255, 255, 0.82);
}

.btn-text {
  display: inline-block;
}

.dropdown {
  position: relative;
}

.dropbtn .btn-icon-right {
  transition: transform 0.25s ease;
}

.dropdown:hover .dropbtn .btn-icon-right,
.dropdown.active .dropbtn .btn-icon-right {
  transform: rotate(180deg);
}

.dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 3px);
  min-width: fit-content;
  max-width: 320px;
  width: max-content;
  padding: 10px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(14, 14, 14, 0.72);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.6);
  z-index: 1000;
}

.dropdown-content:before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -12px;
  height: 12px;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown.active .dropdown-content {
  display: block;
}

.dropdown-content a {
  display: block;
  padding: 10px 10px;
  border-radius: 10px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.dropdown-content a:hover {
  background: rgba(255, 255, 255, 0.08);
}

@media (max-width: 1050px) {
  .top-nav-context {
    display: none;
  }
}

.top-nav.is-collapsed .top-nav-menu-toggle {
  display: inline-flex;
}

.top-nav.is-collapsed .top-nav-actions {
  display: none;
}

.top-nav.is-collapsed.is-menu-open .top-nav-actions {
  position: absolute;
  right: 18px;
  top: calc(100% + 10px);
  z-index: 35;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: 10px;
  min-width: 220px;
  padding: 12px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(12, 12, 12, 0.94);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.48);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.top-nav.is-collapsed.is-menu-open .top-nav-actions .pill-link,
.top-nav.is-collapsed.is-menu-open .top-nav-actions .dropdown,
.top-nav.is-collapsed.is-menu-open .top-nav-actions .pill-button {
  width: 100%;
}

.top-nav.is-collapsed.is-menu-open .top-nav-actions .pill-button {
  justify-content: center;
}

.top-nav.is-collapsed.is-menu-open .top-nav-actions .dropdown-content {
  position: static;
  display: none;
  width: 100%;
  min-width: 0;
  max-width: none;
  margin-top: 8px;
  box-shadow: none;
  border-color: rgba(255, 255, 255, 0.08);
}

.top-nav.is-collapsed.is-menu-open .top-nav-actions .dropdown-content:before {
  display: none;
}

.top-nav.is-collapsed.is-menu-open .top-nav-actions .dropdown.active .dropdown-content {
  display: block;
}

.hero {
  padding: 44px 18px 28px;
}

.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  margin: 0;
  font-size: clamp(80px, 9.4vw, 124px);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  margin: 18px 0 24px;
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.25;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
}

.hero-authors {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 16px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  margin-top: 10px;
  justify-content: center;
  width: fit-content;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.author-linebreak {
  flex-basis: 100%;
  height: 0;
}

.author sup {
  font-size: 12px;
  vertical-align: super;
}

.author {
  display: inline;
  color: inherit;
  text-decoration: none;
}

.author:hover {
  text-decoration: underline;
}

.hero-affiliations {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  line-height: 1.6;
  justify-items: center;
  text-align: center;
}

.hero-affiliations sup {
  font-size: 12px;
  vertical-align: super;
}

.hero-affiliations > div:first-child {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  justify-content: center;
  width: 100%;
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  color: rgba(255, 255, 255, 0.72);
  justify-content: center;
  text-align: center;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto;
  transform: translateX(-0.5em);
  font-size: 12px;
  font-style: italic;
}

.hero-teaser {
  margin: 44px auto 0;
  max-width: 100%;
}

.hero-teaser.portrait-video {
  height: auto;
  aspect-ratio: 16 / 9;
}

.portrait-video-hero:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--border-2);
}

.hero-tldr {
  margin: 18px 0 0;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
  text-align: center;
}

.section {
  padding: 40px 18px;
}

.section-tight {
  padding-top: 10px;
}

.section-last {
  padding-bottom: 60px;
}

.section-inner {
  max-width: var(--container);
  margin: 0 auto;
}

.section-inner-wide {
  max-width: none;
  width: 100%;
}

.section-title {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.2px;
  text-align: center;
}

.section-desc {
  margin: 14px auto 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
  max-width: 1040px;
  text-align: center;
}

.figure-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.figure-card {
  background: linear-gradient(180deg, var(--card), var(--card-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.figure-img {
  width: 100%;
  height: auto;
}

.task-section {
  margin-top: 60px;
  padding-top: 22px;
}

.task-section + .task-section {
  margin-top: 60px;
}

.task-head {
  max-width: var(--container);
  margin: 0 auto 30px;
  padding: 0 18px;
}

.task-heading {
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.2px;
  text-align: center;
}

.task-replay {
  flex-shrink: 0;
  height: 32px;
  padding: 0 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.88);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.06s ease;
}

.task-replay:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
  color: rgba(255, 255, 255, 0.96);
}

.task-replay:active {
  transform: translateY(1px);
}

.task-replay:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.28);
  outline-offset: 3px;
}

.task-desc {
  margin: 8px auto 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
  max-width: 100%;
  text-align: center;
}

.task-body {
  width: 100%;
  padding: 0 18px;
  display: flex;
  justify-content: center;
}

.compare-stack {
  display: grid;
  gap: 16px;
}

.task-section#rap2v {
  --compare-scale: 1;
}

.task-section#r2v,
.task-section#ra2v,
.task-section#rp2v {
  --compare-scale: 0.8;
}

.task-section#rap2v .compare-stack {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}



.task-section#rap2v .compare-toggle {
  grid-column: 1 / -1;
}

@media (max-width: 1500px) {
  .task-section#rap2v .compare-stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .task-section#rap2v .compare-stack {
    grid-template-columns: 1fr;
  }
}

.task-section#rap2v .compare-stack > .compare-block .video-label {
  display: none;
}

.task-section#rap2v .compare-stack > .compare-block:nth-child(-n + 2) .video-label-ours {
  display: block;
}

.compare-toggle {
  display: flex;
  justify-content: center;
  width: 100%;
  padding: 14px 0 0;
}

.compare-toggle-btn {
  height: 32px;
  padding: 0 10px;
  border-radius: 10px;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.84);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: color 0.16s ease, background 0.16s ease, transform 0.06s ease;
}

.compare-toggle-btn:after {
  content: "▾";
  opacity: 0.78;
  transform: translateY(1px);
  transition: transform 0.16s ease, opacity 0.16s ease;
}

.compare-toggle-btn[aria-expanded="true"]:after {
  transform: translateY(-1px) rotate(180deg);
}

.compare-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.96);
}

.compare-toggle-btn:hover:after {
  opacity: 1;
}

.compare-toggle-btn:active {
  transform: translateY(1px);
}

.compare-toggle-btn:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.28);
  outline-offset: 3px;
}

.compare-toggle-btn:disabled {
  opacity: 0.65;
  cursor: default;
}

.compare-stack > .compare-block:not(:first-child) .video-label {
  display: none;
}

.compare-block {
  display: grid;
  grid-template-columns: 520px auto;
  gap: 18px;
  align-items: start;
  justify-content: center;
}

.compare-block-placeholder {
  opacity: 0.96;
}

.compare-block-placeholder .input-card,
.compare-block-placeholder .portrait-video,
.compare-block-placeholder .ref-img,
.compare-block-placeholder .video-label {
  overflow: hidden;
}

.compare-block-error {
  opacity: 0.7;
}

.placeholder-block,
.placeholder-label,
.placeholder-video,
.ref-img-placeholder {
  position: relative;
  overflow: hidden;
}

.placeholder-block {
  width: 100%;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
}

.placeholder-block-text {
  min-height: 84px;
}

.placeholder-label {
  min-height: 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
}

.placeholder-video,
.ref-img-placeholder {
  background: rgba(255, 255, 255, 0.05);
}

.placeholder-shimmer {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.11) 50%, rgba(255, 255, 255, 0) 100%);
  transform: translateX(-100%);
  animation: placeholderShimmer 1.4s ease-in-out infinite;
}

@keyframes placeholderShimmer {
  100% {
    transform: translateX(100%);
  }
}

.compare-block-fullbleed {
  max-width: 2600px;
  width: 100%;
}

.task-section {
  --compare-scale: 1;
}

.task-section .task-body {
  padding: 0 calc(18px * var(--compare-scale));
  overflow-x: hidden;
}

.task-section .compare-stack {
  gap: calc(16px * var(--compare-scale));
  width: max-content;
  max-width: none;
}

.task-section .compare-block {
  grid-template-columns: calc(520px * var(--compare-scale)) auto;
  gap: calc(18px * var(--compare-scale));
}

.task-section .compare-block-fullbleed {
  max-width: calc(2600px * var(--compare-scale));
}

.task-section .compare-input {
  --input-gap: calc(12px * var(--compare-scale));
  gap: calc(12px * var(--compare-scale));
}

.task-section .input-row {
  gap: calc(12px * var(--compare-scale));
}

.task-section .input-row .ref-grid {
  gap: calc(12px * var(--compare-scale));
}

.task-section .input-card {
  padding: calc(12px * var(--compare-scale));
}

.task-section .input-label {
  font-size: calc(12px * var(--compare-scale));
  margin-bottom: calc(8px * var(--compare-scale));
}

.task-section .input-text {
  font-size: calc(14px * var(--compare-scale));
  line-height: 1.65;
}

.task-section .input-text-scroll {
  max-height: calc(118px * var(--compare-scale));
  --fade-h: calc(34px * var(--compare-scale));
  padding-right: calc(4px * var(--compare-scale));
}

.task-section .audio-player {
  height: calc(34px * var(--compare-scale));
  border-radius: calc(12px * var(--compare-scale));
}

.task-section .output-row {
  gap: calc(10px * var(--compare-scale));
  padding: calc(2px * var(--compare-scale)) calc(2px * var(--compare-scale)) calc(10px * var(--compare-scale));
}

.task-section .video-card {
  gap: calc(8px * var(--compare-scale));
  width: calc(360px * var(--compare-scale));
}

.task-section .video-label {
  font-size: 13px;
}

.task-section .portrait-video {
  width: calc(360px * var(--compare-scale));
  height: calc(640px * var(--compare-scale));
}

.task-section .portrait-video-xl {
  width: calc(360px * var(--compare-scale));
  height: calc(640px * var(--compare-scale));
}

.task-section .portrait-video-input {
  width: calc(240px * var(--compare-scale));
  height: calc(426px * var(--compare-scale));
}

.task-section .portrait-video:hover {
  transform: translateY(calc(-4px * var(--compare-scale)));
}

.compare-input {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  --input-gap: 12px;
  gap: 12px;
}

.compare-input-title {
  display: block;
  width: 100%;
  min-width: 0;
  font-size: calc(13px * var(--fit-scale, 1));
  line-height: 1.2;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.88);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.compare-input > .input-card-ref .ref-grid {
  display: flex;
  justify-content: center;
  gap: var(--input-gap);
  flex-wrap: nowrap;
}

.compare-input > .input-card-ref .ref-img {
  width: calc((100% - 2 * var(--input-gap)) / 3);
  height: auto;
  aspect-ratio: 9 / 16;
}

.task-section#ra2v .compare-input > .input-card-ref .ref-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--input-gap);
  justify-content: initial;
  max-width: calc(100% * 2 / 3);
  margin-left: auto;
  margin-right: auto;
}

.task-section#ra2v .compare-input > .input-card-ref .ref-img {
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 16;
  object-fit: cover;
}

.input-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  width: 100%;
  align-items: start;
}

.input-row > .input-card {
  min-width: 0;
}

.input-row > .input-card-ref {
  grid-column: span 2;
  width: 100%;
}

.input-row > .input-card-pose {
  grid-column: span 1;
  width: 100%;
}

.task-section#rp2v .input-row,
.task-section#rap2v .input-row {
  align-items: stretch;
}

.task-section#rp2v .input-row > .input-card-ref,
.task-section#rp2v .input-row > .input-card-pose,
.task-section#rap2v .input-row > .input-card-ref,
.task-section#rap2v .input-row > .input-card-pose {
  height: 100%;
}

.task-section#rp2v .input-row > .input-card-pose,
.task-section#rap2v .input-row > .input-card-pose {
  display: flex;
  flex-direction: column;
}

.task-section#rp2v .input-row > .input-card-pose .portrait-video-input,
.task-section#rap2v .input-row > .input-card-pose .portrait-video-input {
  flex: 1 1 auto;
}

.input-row .ref-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  justify-content: initial;
}

.input-row .ref-img {
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 16;
}

.input-row .portrait-video-input {
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 16;
}

.input-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--card), var(--card-2));
  padding: 12px;
}

.input-label {
  font-size: calc(12px * var(--compare-scale, 1));
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: calc(8px * var(--compare-scale, 1));
  text-align: center;
}

.input-text {
  font-size: calc(14px * var(--compare-scale, 1));
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.88);
}

.input-text-scroll {
  max-height: 118px;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  position: relative;
  --fade-h: 34px;
  padding-right: 4px;
}

.input-text-scroll::-webkit-scrollbar {
  display: none;
}

.input-text-scroll:after {
  content: "";
  pointer-events: none;
  display: block;
  position: sticky;
  bottom: 0;
  width: 100%;
  height: var(--fade-h);
  margin-top: calc(var(--fade-h) * -1);
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(11, 11, 11, 0.92));
  opacity: 0;
  transition: opacity 0.14s ease;
}

.input-text-scroll.has-fade:after {
  opacity: 1;
}

.input-text-inner {
  white-space: pre-wrap;
}

.ref-grid {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.ref-img {
  width: 196px;
  height: 348px;
  object-fit: cover;
  border-radius: var(--media-radius);
  border: 1px solid var(--border-2);
  background: #0a0a0a;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
  will-change: transform;
}

.ref-grid-placeholder {
  flex-wrap: nowrap;
}

.ref-img:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.55);
}

.compare-input > .input-card-ref {
  justify-self: stretch;
}

.audio-player {
  width: 100%;
  height: 34px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: linear-gradient(180deg, var(--card), var(--card-2));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
  overflow: hidden;
  color-scheme: dark;
  accent-color: rgba(255, 255, 255, 0.86);
}

.audio-player::-webkit-media-controls-panel {
  background-color: transparent;
}

.audio-player::-webkit-media-controls-enclosure {
  background-color: transparent;
}

.audio-player::-webkit-media-controls-overflow-button {
  display: none;
}

.audio-player::-webkit-media-controls-current-time-display,
.audio-player::-webkit-media-controls-time-remaining-display {
  color: rgba(255, 255, 255, 0.82);
}

.audio-player::-webkit-media-controls-mute-button,
.audio-player::-webkit-media-controls-play-button {
  color: rgba(255, 255, 255, 0.92);
  filter: none;
}

.compare-output {
  border-radius: 0;
  border: 0;
  background: transparent;
  padding: 0;
  overflow: visible;
  width: fit-content;
  max-width: 100%;
  justify-self: start;
}

.output-row {
  display: flex;
  gap: calc(10px * var(--compare-scale, 1));
  overflow-x: hidden;
  padding: 2px 2px 10px;
  scrollbar-width: none;
  scroll-behavior: smooth;
  width: max-content;
}

.output-row::-webkit-scrollbar {
  display: none;
}

.video-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  flex: 0 0 auto;
  gap: calc(8px * var(--compare-scale, 1));
  width: calc(360px * var(--compare-scale, 1));
}

.video-label {
  display: block;
  width: 100%;
  min-width: 0;
  font-size: calc(13px * var(--fit-scale, 1));
  line-height: 1.2;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.88);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.video-label-ours {
  color: var(--fg);
}

.portrait-video {
  position: relative;
  width: 360px;
  height: 640px;
  border-radius: var(--media-radius);
  overflow: hidden;
  background: #0a0a0a;
  border: 1px solid var(--border-2);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
  will-change: transform;
}

.case-badge {
  position: absolute;
  left: calc(12px * var(--compare-scale, 1));
  top: calc(12px * var(--compare-scale, 1));
  z-index: 2;
  padding: calc(6px * var(--compare-scale, 1)) calc(10px * var(--compare-scale, 1));
  border-radius: 999px;
  font-size: calc(12px * var(--compare-scale, 1));
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: none;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(0, 0, 0, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  transform: translateY(calc(-6px * var(--compare-scale, 1)));
  transition: opacity 0.16s ease, transform 0.16s ease;
  pointer-events: none;
}

.portrait-video:hover .case-badge {
  opacity: 1;
  transform: translateY(0);
}

.portrait-video:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.55);
}

.portrait-video-hero {
  transition: none;
  will-change: auto;
}

.portrait-video-hero:hover {
  transform: none;
  border-color: var(--border-2);
  box-shadow: none;
}

.portrait-video-xl {
  width: 360px;
  height: 640px;
}

.portrait-video-input {
  width: 240px;
  height: 426px;
}

.portrait-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

video:fullscreen {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

video:-webkit-full-screen {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

video:-moz-full-screen {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

video:-ms-fullscreen {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

.pose-overlay-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.14s ease;
}

.pose-overlay-active .pose-overlay-video {
  opacity: 0.42;
}

.apps-grid {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.section-more-features {
  --mf-scale: 1;
  --mf-base-width: calc(var(--container) * 1.2);
  padding-bottom: 78px;
}

.section-more-features .section-inner {
  max-width: none;
  width: 100%;
}

.section-more-features .section-title,
.section-more-features .section-desc {
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
}

.more-features-grid {
  margin-top: 30px;
  display: grid;
  width: calc(var(--mf-base-width) * var(--mf-scale, 1));
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: calc(14px * var(--mf-scale, 1));
}

.section-more-features .app-card {
  padding: calc(14px * var(--mf-scale, 1));
  gap: calc(10px * var(--mf-scale, 1));
}

.section-more-features .app-title {
  font-size: calc(16px * var(--mf-scale, 1));
}

.section-more-features .app-desc {
  font-size: calc(14px * var(--mf-scale, 1));
  margin-bottom: calc(10px * var(--mf-scale, 1));
}

.more-features-grid .app-title {
  text-align: center;
}

.more-features-grid .app-desc {
  margin-bottom: 10px;
  text-align: center;
}

.app-card-wide {
  grid-column: 1 / -1;
}

.mf-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: calc(10px * var(--mf-scale, 1));
}

.mf-six {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: calc(10px * var(--mf-scale, 1));
}

.mf-tile {
  position: relative;
  width: 100%;
  border-radius: var(--media-radius);
  overflow: hidden;
  background: #0a0a0a;
  border: 1px solid var(--border-2);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
  will-change: transform;
}

.mf-tile:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.55);
}

.mf-tile-portrait {
  aspect-ratio: 9 / 16;
}

.mf-tile-landscape {
  aspect-ratio: 16 / 9;
}

.mf-animation {
  display: grid;
  grid-template-columns: var(--mf-animation-portrait-w, auto) minmax(0, 1fr);
  gap: calc(14px * var(--mf-scale, 1));
  align-items: start;
}

.mf-animation-portrait {
  width: var(--mf-animation-portrait-w, auto);
  height: var(--mf-animation-portrait-h, auto);
  aspect-ratio: 9 / 16;
}

.mf-animation-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-template-rows: repeat(2, auto);
  gap: calc(10px * var(--mf-scale, 1));
}

.mf-animation-grid .mf-tile {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.mf-tile video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 980px) {
  .more-features-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .mf-six {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .mf-animation {
    grid-template-columns: var(--mf-animation-portrait-w, auto) 1fr;
  }

  .mf-animation-portrait {
    height: auto;
  }

  .mf-animation-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-template-rows: repeat(2, auto);
  }
}

.gallery-grid {
  margin-top: 18px;
  width: 100%;
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  overflow: hidden;
  --gallery-scale: 1;
  --gallery-height: calc(700px * var(--gallery-scale));
  --gallery-gap: calc(10px * var(--gallery-scale));
  --gallery-col-gap: calc(12px * var(--gallery-scale));
}

.gallery-strip {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: var(--gallery-col-gap);
  align-items: flex-start;
  padding: 0;
  width: max-content;
  margin: 0 auto;
}

.gallery-col {
  display: flex;
  flex-direction: column;
  gap: var(--gallery-gap);
  height: var(--gallery-height);
  flex: 0 0 auto;
}

.gallery-col-extra {
  display: flex;
}

.gallery-col-extra.gallery-col-12,
.gallery-col-extra.gallery-col-21 {
  display: grid;
}

/* 
@media (min-width: 1360px) {
  .gallery-col-extra-1 {
    display: flex;
  }

  .gallery-col-extra-1.gallery-col-12,
  .gallery-col-extra-1.gallery-col-21 {
    display: grid;
  }
}

@media (min-width: 1680px) {
  .gallery-col-extra-2 {
    display: flex;
  }

  .gallery-col-extra-2.gallery-col-12,
  .gallery-col-extra-2.gallery-col-21 {
    display: grid;
  }
}
*/

.gallery-col-21,
.gallery-col-12 {
  display: grid;
  grid-template-columns: auto auto;
  gap: var(--gallery-gap) var(--gallery-col-gap);
  align-content: start;
  --gallery-small-h: calc(
    (var(--gallery-height) - var(--gallery-gap) - (var(--gallery-col-gap) * 1.7777778)) * 0.3333333
  );
  --gallery-big-h: calc(var(--gallery-height) - var(--gallery-gap) - var(--gallery-small-h));
}

.gallery-col-21 .gallery-tile-lg {
  grid-column: 1 / span 2;
}

.gallery-col-12 .gallery-tile-lg {
  grid-column: 1 / span 2;
}

.gallery-col-12 .gallery-tile-sm:nth-of-type(1) {
  grid-column: 1;
}

.gallery-col-12 .gallery-tile-sm:nth-of-type(2) {
  grid-column: 2;
}

.gallery-tile.portrait-video {
  aspect-ratio: 9 / 16;
  width: calc(var(--gallery-tile-h) * 9 / 16);
  height: var(--gallery-tile-h);
  flex: 0 0 auto;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
  will-change: transform;
}

.gallery-col-2 .gallery-tile,
.gallery-col-3 .gallery-tile,
.gallery-col-21 .gallery-tile,
.gallery-col-12 .gallery-tile {
  --gallery-tile-h: 0px;
}

.gallery-col-2 .gallery-tile {
  --gallery-tile-h: calc((var(--gallery-height) - var(--gallery-gap)) / 2);
}

.gallery-col-3 .gallery-tile {
  --gallery-tile-h: calc((var(--gallery-height) - (var(--gallery-gap) * 2)) / 3);
}

.gallery-col-21 .gallery-tile-lg,
.gallery-col-12 .gallery-tile-lg {
  --gallery-tile-h: var(--gallery-big-h);
}

.gallery-col-21 .gallery-tile-sm,
.gallery-col-12 .gallery-tile-sm {
  --gallery-tile-h: var(--gallery-small-h);
}

@media (max-width: 1200px) {
  /*
  .gallery-grid {
    --gallery-height: 660px;
  }
  */
}

.app-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--card), var(--card-2));
  padding: 14px;
  display: grid;
  gap: 10px;
}

.app-title {
  font-size: 16px;
  font-weight: 700;
}

.app-desc {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.bibtex {
  margin: 14px 0 0;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #050505;
  padding: 14px;
  overflow: auto;
  font-size: 13px;
  line-height: 1.55;
}

.footer {
  border-top: 1px solid var(--border-2);
  margin-top: 116px;
  padding: 22px 18px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  text-align: center;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  display: grid;
  gap: 6px;
}

.back-to-top {
  position: fixed;
  right: calc(18px + env(safe-area-inset-right));
  bottom: calc(18px + env(safe-area-inset-bottom));
  z-index: 40;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition: transform 0.18s ease, opacity 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.24);
  transform: translateY(-2px);
}

.back-to-top:active {
  transform: translateY(0);
}

.back-to-top:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.28);
  outline-offset: 3px;
}

body.has-lightbox {
  overflow: hidden;
}

main img,
main video,
#heroTeaserVideo {
  cursor: zoom-in;
}

#heroTeaserVideo {
  cursor: default;
}

.hero-video-idle::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(14px) saturate(135%);
  -webkit-backdrop-filter: blur(14px) saturate(135%);
  pointer-events: none;
}

.hero-video-idle #heroTeaserVideo {
  filter: blur(3px) saturate(115%) brightness(0.86);
  transform: scale(1.02);
}

.hero-video-idle .hero-video-btn {
  opacity: 1;
}

.hero-video-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(0, 0, 0, 0.42);
  color: rgba(255, 255, 255, 0.94);
  display: grid;
  place-items: center;
  cursor: pointer;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.55);
  transition: transform 0.16s ease, background 0.16s ease, border-color 0.16s ease, opacity 0.16s ease;
}

.hero-video-btn:hover {
  transform: translate(-50%, -50%) scale(1.03);
  background: rgba(0, 0, 0, 0.52);
  border-color: rgba(255, 255, 255, 0.34);
}

.hero-video-btn:active {
  transform: translate(-50%, -50%) scale(0.98);
}

.hero-video-btn:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.28);
  outline-offset: 4px;
}

.hero-video-btn[hidden] {
  display: none;
}

.hero-video-btn {
  z-index: 3;
}

.media-lightbox {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: none;
  align-items: center;
  justify-content: center;
  padding: min(28px, 4vw);
}

.media-lightbox.is-open {
  display: flex;
}

.media-lightbox:before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.46);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.media-lightbox-inner {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
}

.media-lightbox-media {
  max-width: 96vw;
  max-height: 92vh;
  width: auto;
  height: auto;
  border-radius: var(--media-radius);
  background: #0a0a0a;
  border: 1px solid var(--border-2);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.62);
}

.media-lightbox-close {
  position: absolute;
  top: -12px;
  right: -12px;
  z-index: 2;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.92);
  font-size: 30px;
  line-height: 1;
  font-weight: 500;
  display: grid;
  place-items: center;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.media-lightbox-close:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.24);
}

.media-lightbox-close:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.28);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .task-head {
    text-align: center;
  }
  .task-heading {
    justify-content: center;
    text-align: center;
  }
  .task-desc {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }
  .compare-block {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .compare-output {
    width: 100%;
    justify-self: center;
  }
  .output-row {
    justify-content: center;
  }
  .input-row {
    grid-template-columns: 1fr;
  }
  .input-row > .input-card-ref {
    grid-column: auto;
  }
  .input-row > .input-card-pose {
    grid-column: auto;
  }
  .task-section#rp2v .input-row,
  .task-section#rap2v .input-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .task-section#rp2v .input-row > .input-card-ref,
  .task-section#rap2v .input-row > .input-card-ref {
    grid-column: span 2;
  }
  .task-section#rp2v .input-row > .input-card-pose,
  .task-section#rap2v .input-row > .input-card-pose {
    grid-column: span 1;
  }
  .apps-grid {
    grid-template-columns: 1fr;
  }
  .video-card {
    width: min(280px, 82vw);
  }
  .portrait-video,
  .portrait-video-xl {
    width: min(280px, 82vw);
    height: auto;
    aspect-ratio: 9 / 16;
  }
  .portrait-video-input {
    width: 220px;
    height: 391px;
  }
}

@media (min-width: 901px) {
  .compare-input .input-card {
    padding: 10px;
  }
  .compare-input {
    --input-gap: 10px;
  }
  .compare-input .input-label {
    margin-bottom: 6px;
  }
  .compare-input .input-text-scroll {
    max-height: 92px;
  }
  .input-row {
    gap: 10px;
  }
  .input-row > .input-card-ref {
    padding: 10px 20px;
  }
  .input-row .ref-grid {
    gap: 10px;
  }
}

@media (max-width: 520px) {
  .hero-title {
    font-size: clamp(56px, 16vw, 86px);
  }
  .hero-notes {
    transform: none;
  }
  .top-nav-inner {
    align-items: center;
  }
  .top-nav-left {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: nowrap;
  }
  .top-nav-context {
    width: auto;
    justify-content: flex-start;
  }
  .top-nav-actions {
    width: auto;
    justify-content: flex-end;
  }
  .ref-grid {
    flex-wrap: wrap;
  }
  .ref-img {
    width: 160px;
    height: 284px;
  }
  .dropdown-content {
    right: auto;
    left: 0;
  }
  .video-card {
    width: min(240px, 84vw);
  }
  .portrait-video,
  .portrait-video-xl {
    width: min(240px, 84vw);
    height: auto;
    aspect-ratio: 9 / 16;
  }
}