.research-page {
  --research-ink: #f7fbff;
  --research-muted: rgba(247, 251, 255, 0.72);
  --research-line: rgba(247, 251, 255, 0.16);
  --research-cyan: #6fffe9;
  --research-dark: #071018;
  --research-panel: rgba(255, 255, 255, 0.055);
  background: var(--research-dark);
  color: var(--research-ink);
  font-family: Inter, "Segoe UI", Arial, "Microsoft YaHei", sans-serif;
  overflow: hidden;
}

.research-page * {
  box-sizing: border-box;
}

.research-page a {
  color: inherit;
}

.research-wrap {
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
}

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

.research-section {
  padding: 92px 0;
}

.research-section--overview {
  position: relative;
  padding-top: 138px;
  padding-bottom: 82px;
  isolation: isolate;
  background:
    linear-gradient(90deg, rgba(7, 16, 24, 0.98), rgba(7, 16, 24, 0.78) 50%, rgba(7, 16, 24, 0.54)),
    radial-gradient(circle at 78% 24%, rgba(95, 182, 255, 0.24), transparent 30%),
    linear-gradient(135deg, #071018, #0d1b2a 58%, #111827);
}

.research-section--overview::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.74;
}

.research-section--overview::after {
  content: "";
  position: absolute;
  inset: auto -20% -26% 36%;
  z-index: -2;
  height: 460px;
  background: linear-gradient(90deg, transparent, rgba(111, 255, 233, 0.16), rgba(95, 182, 255, 0.22), transparent);
  filter: blur(28px);
  transform: skewY(-7deg);
}

.research-hero-points {
  position: absolute;
  inset: 74px 0 0 0;
  z-index: -1;
  opacity: 0.38;
  pointer-events: none;
  background:
    radial-gradient(circle at 56% 24%, rgba(111, 255, 233, 0.88) 0 2px, transparent 3px),
    radial-gradient(circle at 78% 34%, rgba(95, 182, 255, 0.74) 0 2px, transparent 3px),
    radial-gradient(circle at 66% 58%, rgba(134, 239, 172, 0.7) 0 2px, transparent 3px),
    radial-gradient(circle at 88% 68%, rgba(111, 255, 233, 0.68) 0 2px, transparent 3px);
  background-size: 72px 72px, 88px 88px, 104px 104px, 132px 132px;
  mask-image: radial-gradient(ellipse at 74% 44%, rgba(0, 0, 0, 0.96), transparent 65%);
  animation: research-point-drift 18s ease-in-out infinite alternate;
}

@keyframes research-point-drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(24px, -16px, 0) scale(1.03);
  }
}

@media (prefers-reduced-motion: reduce) {
  .research-hero-points {
    animation: none;
  }
}

.research-section--dark {
  background: linear-gradient(180deg, #071018, #0b1220);
}

.research-section--panel {
  background:
    radial-gradient(circle at 82% 20%, rgba(95, 182, 255, 0.12), transparent 32%),
    linear-gradient(180deg, #0b1220, #071018);
}

.research-section--cta {
  background: linear-gradient(180deg, #071018, #0b1220);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.research-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 0.68fr);
  gap: 70px;
  align-items: center;
  margin-bottom: 0;
}

.research-hero h1,
.research-section h2 {
  margin: 0;
  color: #fff;
  font-size: clamp(38px, 5.4vw, 82px);
  line-height: 1.04;
  letter-spacing: 0;
}

.research-hero h1 {
  margin-bottom: 22px;
}

.research-hero__copy > p:not(.research-kicker) {
  max-width: 780px;
  margin: 0;
  color: var(--research-muted);
  font-size: 18px;
  line-height: 1.82;
}

.research-anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.research-anchor-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.research-anchor-nav a:hover {
  transform: translateY(-2px);
  border-color: rgba(111, 255, 233, 0.48);
  background: rgba(111, 255, 233, 0.1);
}

.research-hero__visual {
  position: relative;
}

.research-tree {
  position: relative;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background:
    radial-gradient(circle at 18% 18%, rgba(111, 255, 233, 0.14), transparent 28%),
    rgba(255, 255, 255, 0.045);
  backdrop-filter: blur(16px);
  overflow: hidden;
}

.research-tree::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 84px;
  bottom: 34px;
  width: 1px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(111, 255, 233, 0.12), rgba(111, 255, 233, 0.78), rgba(95, 182, 255, 0.16));
}

.research-tree__trunk {
  position: relative;
  width: min(280px, 100%);
  margin: 0 auto 26px;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    radial-gradient(circle at 24% 28%, rgba(111, 255, 233, 0.14), transparent 28%),
    rgba(7, 16, 24, 0.74);
  text-align: center;
  z-index: 2;
}

.research-tree__trunk span {
  display: block;
  color: var(--research-cyan);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.research-tree__trunk strong {
  display: block;
  margin-top: 8px;
  color: #fff;
  font-size: 24px;
  line-height: 1.15;
}

.research-tree__branches {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.research-tree__branches::before {
  content: "";
  position: absolute;
  left: 25%;
  right: 25%;
  top: -14px;
  height: 1px;
  background: rgba(111, 255, 233, 0.52);
}

.research-tree__branch {
  position: relative;
  display: grid;
  gap: 14px;
}

.research-tree__branch::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -14px;
  width: 1px;
  height: 14px;
  background: rgba(111, 255, 233, 0.52);
}

.research-tree__root {
  position: relative;
  min-height: 108px;
  padding: 20px;
  border: 1px solid rgba(111, 255, 233, 0.28);
  background:
    radial-gradient(circle at 18% 24%, rgba(111, 255, 233, 0.18), transparent 26%),
    linear-gradient(135deg, rgba(15, 78, 99, 0.38), rgba(23, 37, 84, 0.46));
}

.research-tree__branch--render .research-tree__root {
  background:
    radial-gradient(circle at 72% 24%, rgba(95, 182, 255, 0.18), transparent 30%),
    linear-gradient(135deg, rgba(30, 27, 75, 0.58), rgba(7, 16, 24, 0.7));
}

.research-tree__root span {
  display: inline-flex;
  min-width: 38px;
  height: 30px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(111, 255, 233, 0.46);
  color: var(--research-cyan);
  font-size: 12px;
  font-weight: 800;
}

.research-tree__root strong {
  display: block;
  margin-top: 18px;
  color: #fff;
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.15;
}

.research-tree__children {
  position: relative;
  display: grid;
  gap: 10px;
  padding-top: 16px;
}

.research-tree__children::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 1px;
  height: 16px;
  background: rgba(111, 255, 233, 0.42);
}

.research-tree__children span {
  display: block;
  min-height: 42px;
  padding: 11px 12px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  background: rgba(7, 16, 24, 0.62);
  color: rgba(247, 251, 255, 0.78);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.42;
  text-align: center;
}

.research-tree__children span:hover {
  border-color: rgba(111, 255, 233, 0.36);
  background: rgba(111, 255, 233, 0.08);
}

.research-track {
  display: grid;
  gap: 38px;
}

.research-track__intro {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 46px;
  align-items: end;
}

.research-track__intro h2 {
  font-size: clamp(32px, 4.4vw, 58px);
  line-height: 1.08;
}

.research-track__intro p:not(.research-kicker) {
  margin: 0;
  color: var(--research-muted);
  font-size: 17px;
  line-height: 1.8;
}

.research-topic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.research-topic,
.research-demo,
.research-resource {
  border: 1px solid var(--research-line);
  background: var(--research-panel);
}

.research-topic {
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.research-topic:hover {
  transform: translateY(-4px);
  border-color: rgba(111, 255, 233, 0.36);
  background: rgba(255, 255, 255, 0.075);
}

.research-topic__media {
  height: 190px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  background-size: cover;
  background-position: center;
}

.research-topic__media--points {
  background-image: url("../img/research-point-cloud.svg");
}

.research-topic__media--field {
  background-image: url("../img/research-radiance-field.svg");
}

.research-topic__media--material {
  background-image: url("../img/research-material.svg");
}

.research-topic__media--xr {
  background-image: url("../img/research-xr.svg");
}

.research-topic__body {
  min-height: 276px;
  display: flex;
  flex-direction: column;
  padding: 22px;
}

.research-topic span,
.research-demo span,
.research-resource span {
  color: var(--research-cyan);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.research-topic h3,
.research-demo h3,
.research-resource h3 {
  margin: 10px 0 10px;
  color: #fff;
  font-size: 23px;
  line-height: 1.2;
}

.research-topic p,
.research-demo p,
.research-resource p {
  margin: 0;
  color: rgba(247, 251, 255, 0.7);
  line-height: 1.72;
  font-size: 15px;
}

.research-topic__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
  padding-top: 20px;
}

.research-topic__links a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.82);
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
}

.research-topic__links a:hover {
  border-color: rgba(111, 255, 233, 0.46);
  background: rgba(111, 255, 233, 0.1);
}

.research-demo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.research-demo {
  position: relative;
  min-height: 300px;
  padding: 26px;
  overflow: hidden;
  isolation: isolate;
}

.research-demo::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.72;
  background:
    radial-gradient(circle at 22% 20%, rgba(111, 255, 233, 0.22), transparent 24%),
    linear-gradient(135deg, rgba(15, 23, 42, 0.3), rgba(30, 27, 75, 0.54));
}

.research-demo--denoise::before {
  background:
    radial-gradient(circle at 28% 28%, rgba(255, 255, 255, 0.32), transparent 14%),
    radial-gradient(circle at 72% 54%, rgba(111, 255, 233, 0.18), transparent 22%),
    linear-gradient(135deg, rgba(15, 23, 42, 0.3), rgba(19, 78, 74, 0.38));
}

.research-demo--interpolation::before {
  background:
    linear-gradient(90deg, rgba(111, 255, 233, 0.13) 0 8%, transparent 8% 16%, rgba(95, 182, 255, 0.1) 16% 24%, transparent 24% 32%),
    linear-gradient(135deg, rgba(15, 23, 42, 0.3), rgba(30, 27, 75, 0.5));
}

.research-demo--sr::before {
  background-image: url("../img/research-super-resolution.svg");
  background-size: cover;
  background-position: center;
}

.research-demo--systems::before {
  background:
    radial-gradient(circle at 20% 22%, rgba(111, 255, 233, 0.18), transparent 24%),
    linear-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    linear-gradient(135deg, rgba(15, 23, 42, 0.35), rgba(14, 116, 144, 0.24));
  background-size: cover, 28px 28px, 28px 28px, cover;
}

.research-demo h3 {
  margin-top: 100px;
}

.research-outro {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 0.75fr);
  gap: 42px;
  align-items: end;
  margin-bottom: 30px;
}

.research-outro h2 {
  max-width: 760px;
  font-size: clamp(30px, 4vw, 52px);
}

.research-outro > p {
  margin: 0;
  color: var(--research-muted);
  font-size: 16px;
  line-height: 1.75;
}

.research-resource-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.research-resource {
  display: block;
  min-height: 230px;
  padding: 24px;
  color: #fff;
  text-decoration: none;
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.research-resource:hover {
  transform: translateY(-4px);
  border-color: rgba(111, 255, 233, 0.4);
  background: rgba(255, 255, 255, 0.075);
}

@media (max-width: 1120px) {
  .research-hero,
  .research-track__intro,
  .research-outro {
    grid-template-columns: 1fr;
  }

  .research-topic-grid,
  .research-demo-grid,
  .research-resource-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .research-wrap {
    width: min(100% - 28px, 1240px);
  }

  .research-section {
    padding: 64px 0;
  }

  .research-section--overview {
    padding-top: 128px;
  }

  .research-hero {
    gap: 32px;
  }

  .research-hero__visual,
  .research-topic-grid,
  .research-demo-grid,
  .research-resource-grid {
    grid-template-columns: 1fr;
  }

  .research-hero-points {
    inset: 180px -30% 0 -40%;
    opacity: 0.28;
  }

  .research-tree {
    padding: 14px;
  }

  .research-tree::before,
  .research-tree__branches::before,
  .research-tree__branch::before {
    display: none;
  }

  .research-tree__trunk {
    margin-bottom: 16px;
  }

  .research-tree__branches {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .research-tree__root {
    min-height: 96px;
  }

  .research-tree__children {
    grid-template-columns: 1fr;
  }

  .research-topic__media {
    height: 210px;
  }

  .research-topic__body,
  .research-demo,
  .research-resource {
    min-height: auto;
  }

  .research-demo h3 {
    margin-top: 76px;
  }
}