/* 科研广场 — 科研智能体卡片 */

.research-main {
  padding-top: clamp(1.25rem, 2.5vw, 2rem);
  padding-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.research-main__inner {
  max-width: var(--content-max, 75rem);
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.25rem, 2vw, 1.75rem);
  width: 100%;
  align-items: stretch;
}

.research-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 12.75rem;
  padding: 1.625rem 1.75rem 1.5rem;
  border-radius: 20px;
  border: 1px solid rgba(27, 78, 255, 0.1);
  background:
    linear-gradient(155deg, #ffffff 0%, #fafcff 38%, #f0f5ff 100%);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.95) inset,
    0 8px 24px rgba(32, 56, 100, 0.06),
    0 2px 6px rgba(27, 78, 255, 0.04);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  isolation: isolate;
  transition:
    transform var(--duration) var(--ease-out),
    box-shadow var(--duration) var(--ease-out),
    border-color var(--duration) var(--ease-out);
}

.research-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 85% 70% at 100% 0%, rgba(91, 140, 255, 0.14) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 0% 100%, rgba(95, 3, 255, 0.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
  opacity: 0.85;
  transition: opacity var(--duration) var(--ease-out);
}

.research-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 1.25rem;
  right: 1.25rem;
  height: 2px;
  border-radius: 0 0 4px 4px;
  background: linear-gradient(90deg, rgba(27, 78, 255, 0) 0%, rgba(27, 78, 255, 0.45) 50%, rgba(95, 3, 255, 0) 100%);
  opacity: 0;
  transition: opacity var(--duration) var(--ease-out);
}

.research-card:hover {
  transform: translateY(-4px);
  border-color: rgba(27, 78, 255, 0.22);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.95) inset,
    0 16px 40px rgba(27, 78, 255, 0.12),
    0 4px 12px rgba(27, 78, 255, 0.06);
}

.research-card:hover::before {
  opacity: 1;
}

.research-card:hover::after {
  opacity: 1;
}

.research-card:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.research-card__main {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  gap: 1.125rem;
  min-width: 0;
  min-height: 0;
}

.research-card__head {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 1rem;
  min-width: 0;
}

.research-card__icon {
  --research-icon-size: 3.75rem;
  --research-icon-pad: 0.625rem;
  flex: 0 0 var(--research-icon-size);
  width: var(--research-icon-size);
  height: var(--research-icon-size);
  margin-top: 0.0625rem;
  border-radius: 50%;
  position: relative;
  display: grid;
  place-items: center;
  box-sizing: border-box;
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.95) 0%, transparent 52%),
    linear-gradient(165deg, #f5f9ff 0%, #dce8ff 48%, #c8daff 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    inset 0 -1px 0 rgba(27, 78, 255, 0.06),
    inset 0 0 0 1px rgba(27, 78, 255, 0.12),
    0 4px 12px rgba(27, 78, 255, 0.1),
    0 1px 3px rgba(32, 56, 100, 0.06);
  transition:
    transform var(--duration) var(--ease-out),
    box-shadow var(--duration) var(--ease-out);
}

.research-card__icon::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.55);
  pointer-events: none;
  opacity: 0.9;
}

.research-card:hover .research-card__icon {
  transform: scale(1.05);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    inset 0 0 0 1px rgba(27, 78, 255, 0.16),
    0 8px 18px rgba(27, 78, 255, 0.16),
    0 2px 6px rgba(32, 56, 100, 0.08);
}

.research-card__icon-media {
  position: relative;
  z-index: 1;
  width: calc(var(--research-icon-size) - var(--research-icon-pad) * 2);
  height: calc(var(--research-icon-size) - var(--research-icon-pad) * 2);
  display: grid;
  place-items: center;
  place-content: center;
  margin: 0;
  padding: 0;
  line-height: 0;
}

.research-card__icon-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  margin: 0 auto;
  object-fit: contain;
  object-position: center center;
  filter: drop-shadow(0 2px 5px rgba(27, 78, 255, 0.22));
  transform: translateZ(0);
}

.research-card__detail {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
  margin-top: auto;
}

.research-card__title {
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
  font-size: 1.1875rem;
  line-height: 1.55;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  word-break: break-word;
  transition: color var(--duration) var(--ease-out);
}

.research-card:hover .research-card__title {
  color: #0f172a;
}

.research-card__desc {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.research-card__stats {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.625rem;
  padding-top: 0.25rem;
  font-size: 0.8125rem;
  line-height: 1.375rem;
  color: var(--text-muted);
}

.research-card__stats > span {
  display: inline-flex;
  align-items: center;
  gap: 0.125rem;
  padding: 0.4375rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(27, 78, 255, 0.1);
  box-shadow: 0 1px 2px rgba(27, 78, 255, 0.04);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.research-card__stats em {
  font-style: normal;
  font-weight: 700;
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
  margin: 0 0.0625rem;
}

@media (min-width: 87.5em) {
  .research-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .research-card {
    min-height: 11.5rem;
    padding: 1.5rem 1.625rem 1.375rem;
  }

  .research-card__icon {
    --research-icon-size: 3.5rem;
  }

  .research-card__title {
    font-size: 1.125rem;
  }
}

@media (max-width: 40em) {
  .research-grid {
    grid-template-columns: 1fr;
    gap: 0.875rem;
  }

  .research-card {
    padding: 1.375rem 1.375rem 1.25rem;
    min-height: 0;
  }

  .research-card__icon {
    --research-icon-size: 3.25rem;
    --research-icon-pad: 0.5625rem;
  }

  .research-card__title {
    font-size: 1.0625rem;
    line-height: 1.5;
  }
}

@media (prefers-reduced-motion: reduce) {
  .research-card,
  .research-card__icon {
    transition: none;
  }

  .research-card:hover {
    transform: none;
  }

  .research-card:hover .research-card__icon {
    transform: none;
  }
}