:root {
  color-scheme: light;
  --ink: #181f26;
  --muted: #5b6770;
  --paper: #f4f5f1;
  --white: #ffffff;
  --line: #d5dbd9;
  --green: #2c7a5c;
  --blue: #2c639d;
  --gold: #b7832c;
  --red: #b84b43;
  --shadow: 0 24px 50px rgba(24, 31, 38, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 112px;
  padding: 0 40px;
  background: rgba(244, 245, 241, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: clamp(180px, 22vw, 260px);
  aspect-ratio: 2 / 1;
  text-decoration: none;
  isolation: isolate;
}

.brand::before {
  position: absolute;
  inset: -18px -26px;
  z-index: -1;
  content: "";
  background:
    radial-gradient(ellipse at center, rgba(244, 245, 241, 0.95) 0%, rgba(244, 245, 241, 0.76) 42%, rgba(244, 245, 241, 0) 74%),
    radial-gradient(ellipse at center, rgba(255, 255, 255, 0.82) 0%, rgba(255, 255, 255, 0) 66%);
  filter: blur(13px);
  pointer-events: none;
}

.brand img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 12px 26px rgba(24, 31, 38, 0.1));
  -webkit-mask-image: radial-gradient(ellipse at center, #000 58%, rgba(0, 0, 0, 0.72) 78%, transparent 100%);
  mask-image: radial-gradient(ellipse at center, #000 58%, rgba(0, 0, 0, 0.72) 78%, transparent 100%);
}

nav {
  display: flex;
  gap: 34px;
}

nav a {
  color: var(--muted);
  font-size: clamp(18px, 1.9vw, 28px);
  font-weight: 700;
  text-decoration: none;
}

nav a:hover {
  color: var(--green);
}

.hero {
  position: relative;
  min-height: calc(100vh - 112px);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #dfe5e2;
}

.carousel {
  position: absolute;
  inset: 0;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 720ms ease;
}

.slide::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    radial-gradient(circle at 50% 45%, rgba(244, 245, 241, 0.86) 0%, rgba(244, 245, 241, 0.68) 32%, rgba(244, 245, 241, 0.1) 72%),
    linear-gradient(180deg, rgba(244, 245, 241, 0.1) 0%, rgba(24, 31, 38, 0.1) 100%);
}

.slide.is-active {
  opacity: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  min-height: calc(100vh - 112px);
  object-fit: cover;
  object-position: center;
}

.hero-copy {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 50%;
  width: min(960px, calc(100vw - 48px));
  max-width: min(960px, calc(100vw - 48px));
  color: var(--ink);
  text-align: center;
  transform: translate(-50%, -54%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 2.8vw, 38px);
  margin-bottom: 18px;
  font-size: clamp(64px, 10vw, 144px);
  line-height: 0.88;
  letter-spacing: 0;
  white-space: nowrap;
}

.title-icon {
  width: auto;
  height: clamp(118px, 17vw, 236px);
  flex: 0 0 auto;
  object-fit: contain;
}

.hero-subtitle {
  max-width: none;
  margin-bottom: 0;
  color: #37424a;
  font-size: clamp(20px, 2.2vw, 30px);
  font-style: italic;
  font-weight: 500;
  line-height: 1.45;
}

.team-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  margin-top: 18px;
  padding: 8px 16px 8px 12px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(213, 219, 217, 0.9);
  border-radius: 999px;
  box-shadow: 0 14px 34px rgba(24, 31, 38, 0.1);
  backdrop-filter: blur(10px);
}

.team-badge img {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
}

.team-badge span {
  font-size: clamp(18px, 2vw, 26px);
  font-weight: 900;
}

.hero-links {
  justify-content: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.resource-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 8px 14px;
  color: var(--ink);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(213, 219, 217, 0.92);
  border-radius: 999px;
  box-shadow: 0 12px 28px rgba(24, 31, 38, 0.1);
  backdrop-filter: blur(10px);
}

.resource-pill .resource-icon {
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  object-fit: contain;
}

.resource-pill .arxiv-icon {
  width: 44px;
  height: 20px;
}

.resource-pill span {
  font-weight: 900;
}

.resource-pill small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.resource-pill:not(.is-pending):hover,
.resource-card:not(.is-pending):hover {
  border-color: var(--green);
}

.is-pending {
  cursor: not-allowed;
}

.slide-caption {
  position: absolute;
  right: clamp(22px, 5vw, 72px);
  bottom: clamp(88px, 11vh, 132px);
  z-index: 2;
  max-width: min(460px, calc(100vw - 44px));
  padding: 18px 20px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(213, 219, 217, 0.85);
  border-radius: 8px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.slide-caption span {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.slide-caption strong {
  display: block;
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.24;
}

.carousel-controls {
  position: absolute;
  right: clamp(22px, 5vw, 72px);
  bottom: 30px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 12px;
}

.carousel-controls button {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--ink);
  font: inherit;
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(213, 219, 217, 0.9);
  border-radius: 50%;
  box-shadow: 0 12px 28px rgba(24, 31, 38, 0.14);
  cursor: pointer;
}

.carousel-controls button:hover {
  border-color: var(--green);
}

.carousel-dots {
  display: flex;
  gap: 8px;
  padding: 0 4px;
}

.carousel-dots button {
  width: 10px;
  height: 10px;
  padding: 0;
  background: rgba(24, 31, 38, 0.26);
  border: 0;
  box-shadow: none;
}

.carousel-dots button.is-active {
  background: var(--green);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.metrics div {
  min-height: 136px;
  padding: 30px 34px;
  border-right: 1px solid var(--line);
}

.metrics div:last-child {
  border-right: 0;
}

.metrics strong {
  display: block;
  color: var(--ink);
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1;
}

.metrics span {
  display: block;
  margin-top: 12px;
  color: var(--muted);
  font-weight: 700;
}

.section {
  padding: clamp(54px, 8vw, 104px) clamp(24px, 6vw, 86px);
}

h2 {
  margin-bottom: 22px;
  font-size: clamp(34px, 5vw, 66px);
  line-height: 1.02;
  letter-spacing: 0;
}

.section-head p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.prompt-section {
  background: var(--white);
}

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

.prompt-grid article,
.data-grid article {
  min-height: 190px;
  padding: 22px;
  background: #f8f9f7;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.prompt-grid span {
  display: block;
  margin-bottom: 28px;
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
}

.prompt-grid h3 {
  margin-bottom: 10px;
  font-size: 23px;
}

.prompt-grid p {
  color: var(--muted);
  line-height: 1.55;
}

.section-head {
  max-width: 900px;
  margin-bottom: 36px;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.data-grid article {
  min-height: 176px;
  background: var(--white);
}

.data-grid strong {
  display: block;
  margin-bottom: 18px;
  color: var(--green);
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1;
}

.data-grid span {
  display: block;
  color: var(--muted);
  font-weight: 800;
  line-height: 1.45;
}

.evaluator {
  background: #eef1ed;
}

.resources {
  background: var(--white);
}

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

.resource-card {
  display: flex;
  min-height: 220px;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  color: var(--ink);
  text-decoration: none;
  background: #f8f9f7;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.resource-card span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.resource-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.resource-card .resource-icon {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  object-fit: contain;
}

.resource-card .arxiv-icon {
  width: 78px;
  height: 36px;
}

.resource-card strong {
  display: block;
  margin: 34px 0 14px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
}

.resource-card p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.55;
}

.flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.flow article {
  min-height: 260px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.flow span {
  display: block;
  margin-bottom: 34px;
  color: var(--red);
  font-size: 14px;
  font-weight: 900;
}

.flow h3 {
  margin-bottom: 12px;
  font-size: 24px;
}

.flow p {
  color: var(--muted);
  line-height: 1.55;
}

.case-visualization {
  margin-top: 22px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 44px rgba(24, 31, 38, 0.1);
}

.case-visualization-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 26px;
  border-bottom: 1px solid var(--line);
}

.case-visualization-head h3 {
  margin-bottom: 10px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.04;
}

.case-visualization-head p:not(.eyebrow) {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.6;
}

.case-visualization-head a {
  flex: 0 0 auto;
  padding: 11px 15px;
  color: var(--ink);
  font-weight: 900;
  text-decoration: none;
  background: #f8f9f7;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.case-visualization-head a:hover {
  border-color: var(--green);
}

.case-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  padding: 14px 26px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  border-bottom: 1px solid var(--line);
}

.case-legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.case-legend b {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.legend-owl {
  background: #168aad;
}

.legend-sam {
  background: #e76f51;
}

.legend-depth {
  background: linear-gradient(135deg, #1a1749, #168aad 48%, #f4a261);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 18px;
  background: #f4f5f1;
}

.eval-case-card {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(24, 31, 38, 0.08);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.eval-case-card:hover {
  border-color: rgba(44, 122, 92, 0.55);
  box-shadow: 0 20px 44px rgba(24, 31, 38, 0.14);
  transform: translateY(-2px);
}

.case-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #eef1f2;
}

.case-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 160ms ease;
}

.case-layer[data-view="image"],
.eval-case-card:hover .case-layer[data-view="bbox"] {
  opacity: 1;
}

.eval-case-card:hover .case-layer[data-view="image"] {
  opacity: 0;
}

.eval-case-card.is-locked .case-layer {
  opacity: 0;
}

.eval-case-card.is-locked[data-view="image"] .case-layer[data-view="image"],
.eval-case-card.is-locked[data-view="bbox"] .case-layer[data-view="bbox"],
.eval-case-card.is-locked[data-view="depth"] .case-layer[data-view="depth"],
.eval-case-card.is-locked[data-view="sam"] .case-layer[data-view="sam"] {
  opacity: 1;
}

.case-hover-badge {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 2;
  padding: 6px 9px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 900;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(213, 219, 217, 0.9);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

.eval-case-card:hover .case-hover-badge {
  color: var(--white);
  background: rgba(22, 138, 173, 0.92);
  border-color: rgba(22, 138, 173, 0.92);
}

.eval-case-card.is-locked .case-hover-badge {
  display: none;
}

.case-body {
  padding: 16px;
}

.case-kicker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.case-level {
  color: var(--red);
  font-size: 12px;
  font-weight: 900;
}

.case-status {
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
}

.case-body h4 {
  margin: 0 0 10px;
  font-size: 21px;
  line-height: 1.1;
}

.case-body p {
  margin-bottom: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.case-relation {
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.case-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 0 16px 16px;
}

.case-controls button {
  min-height: 32px;
  padding: 7px 10px;
  color: var(--ink);
  font: inherit;
  font-size: 12px;
  font-weight: 900;
  background: #f8f9f7;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}

.case-controls button:hover,
.case-controls button.is-active {
  color: var(--white);
  background: var(--green);
  border-color: var(--green);
}

@media (max-width: 900px) {
  .topbar {
    padding: 0 18px;
  }

  nav {
    gap: 14px;
  }

  .metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .metrics div:nth-child(2) {
    border-right: 0;
  }

  .metrics div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .prompt-grid,
  .resource-grid,
  .data-grid,
  .case-grid,
  .flow {
    grid-template-columns: 1fr;
  }

  .slide::after {
    background:
      radial-gradient(circle at 50% 42%, rgba(244, 245, 241, 0.9) 0%, rgba(244, 245, 241, 0.7) 44%, rgba(244, 245, 241, 0.18) 100%);
  }

  .slide-caption {
    left: 18px;
    right: 18px;
    bottom: 92px;
  }

  .carousel-controls {
    left: 18px;
    right: auto;
  }

  .case-visualization-head {
    display: block;
  }

  .case-visualization-head a {
    display: inline-block;
    margin-top: 18px;
  }
}

@media (max-width: 560px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    height: auto;
    padding: 14px 16px;
  }

  nav {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
  }

  .hero {
    min-height: 680px;
  }

  .slide img {
    min-height: 680px;
  }

  h1 {
    gap: 12px;
    font-size: 52px;
  }

  .title-icon {
    height: 88px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .team-badge {
    min-height: 44px;
    margin-top: 14px;
  }

  .team-badge img {
    width: 28px;
    height: 28px;
  }

  .team-badge span {
    font-size: 17px;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .metrics div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}