.research-hypergraph {
  --map-ink: #374151;
  --map-muted: #6b7280;
  --map-border: #dbe2e8;
  --map-surface: #f8fafc;
  --map-transfer: #0072b2;
  --map-latent: #008b68;
  --map-hub: #b45a98;
  --map-multisource: #d48600;
  --map-generalization: #6f5ac7;
  margin: 2.25rem 0 2.75rem;
}

.research-hypergraph__heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 0.8rem;
}

.research-hypergraph__heading h2 {
  margin: 0 0 0.2rem;
  padding: 0;
  border-bottom: 0;
  font-size: 1.35rem;
}

.research-hypergraph__heading p {
  margin: 0;
  color: var(--map-muted);
  font-size: 0.88rem;
}

.research-hypergraph__hint {
  flex: 0 0 auto;
  text-align: right;
}

.research-hypergraph__heading-actions {
  display: grid;
  flex: 0 0 auto;
  justify-items: end;
  gap: 0.45rem;
}

.research-hypergraph__view-switch {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--map-border);
  border-radius: 999px;
  background: #f3f6f8;
}

.research-hypergraph__view-switch button {
  min-width: 4.35rem;
  padding: 0.34rem 0.7rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--map-muted);
  font: inherit;
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
}

.research-hypergraph__view-switch button[aria-pressed="true"] {
  background: #fff;
  color: var(--map-ink);
  box-shadow: 0 1px 4px rgba(31, 41, 55, 0.13);
}

.research-hypergraph__view-switch button:focus-visible {
  outline: 2px solid rgba(0, 114, 178, 0.62);
  outline-offset: 2px;
}

.research-hypergraph__shell {
  display: grid;
  grid-template-columns: minmax(0, 2.15fr) minmax(230px, 0.9fr);
  overflow: hidden;
  border: 1px solid var(--map-border);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(31, 41, 55, 0.06);
}

.research-hypergraph__canvas {
  --map-pointer-x: 50%;
  --map-pointer-y: -20%;
  position: relative;
  min-width: 0;
  background:
    radial-gradient(circle at var(--map-pointer-x) var(--map-pointer-y), rgba(0, 114, 178, 0.1), rgba(0, 114, 178, 0) 24%),
    linear-gradient(145deg, #fff 0%, var(--map-surface) 100%);
  contain: layout paint;
}

.research-hypergraph__canvas svg {
  display: block;
  width: 100%;
  height: auto;
}

.research-hypergraph__edge,
.research-hypergraph__edge-line,
.research-hypergraph__paper,
.research-hypergraph__edge-label,
.research-hypergraph__theme-layer,
.research-hypergraph__timeline-layer {
  transition: opacity 180ms ease, fill-opacity 180ms ease, stroke-opacity 180ms ease, stroke-width 180ms ease, transform 180ms ease;
}

.research-hypergraph__theme-layer {
  opacity: 1;
  visibility: visible;
}

.research-hypergraph__timeline-layer {
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms ease, visibility 0s linear 220ms;
}

.research-hypergraph[data-map-view="timeline"] .research-hypergraph__theme-layer {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.research-hypergraph[data-map-view="timeline"] .research-hypergraph__timeline-layer {
  opacity: 1;
  visibility: visible;
  transition-delay: 140ms, 0s;
}

.research-hypergraph__timeline-band {
  fill: rgba(0, 114, 178, 0.025);
  stroke: none;
}

.research-hypergraph__timeline-axis {
  fill: none;
  stroke: #9ba7b4;
  stroke-width: 1.4;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}

.research-hypergraph__timeline-divider {
  stroke: #d7dee5;
  stroke-width: 1;
  stroke-dasharray: 3 6;
  vector-effect: non-scaling-stroke;
}

.research-hypergraph__timeline-tick {
  stroke: #7d8996;
  stroke-width: 1.25;
  vector-effect: non-scaling-stroke;
}

.research-hypergraph__timeline-stem {
  stroke: #aeb8c2;
  stroke-width: 1.15;
  vector-effect: non-scaling-stroke;
}

.research-hypergraph__timeline-stem--manuscript {
  stroke-dasharray: 2.5 4;
}

.research-hypergraph__timeline-year {
  fill: var(--map-ink);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.045em;
}

.research-hypergraph__timeline-month {
  fill: var(--map-muted);
  font-size: 9.5px;
  font-weight: 650;
  letter-spacing: 0.035em;
}

.research-hypergraph__edge {
  stroke: none;
  fill-opacity: 0.045;
  pointer-events: none;
}

.research-hypergraph__edge-line {
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-opacity: 0.72;
  pointer-events: none;
  shape-rendering: geometricPrecision;
  vector-effect: non-scaling-stroke;
}

.research-hypergraph__edge--transfer-learning {
  fill: var(--map-transfer);
}

.research-hypergraph__edge--latent-space-model {
  fill: var(--map-latent);
}

.research-hypergraph__edge--hub-community-detection {
  fill: var(--map-hub);
}

.research-hypergraph__edge--multi-source-data {
  fill: var(--map-multisource);
}

.research-hypergraph__edge--generalization {
  fill: var(--map-generalization);
}

.research-hypergraph__edge-line--transfer-learning {
  stroke: var(--map-transfer);
}

.research-hypergraph__edge-line--latent-space-model {
  stroke: var(--map-latent);
}

.research-hypergraph__edge-line--hub-community-detection {
  stroke: var(--map-hub);
}

.research-hypergraph__edge-line--multi-source-data {
  stroke: var(--map-multisource);
}

.research-hypergraph__edge-line--generalization {
  stroke: var(--map-generalization);
}

.research-hypergraph__edge-hit {
  fill: none;
  stroke: none;
  pointer-events: none;
  vector-effect: non-scaling-stroke;
}

.research-hypergraph__canvas.has-edge-nearby {
  cursor: pointer;
}

.research-hypergraph__edge.is-active {
  fill-opacity: 0.115;
}

.research-hypergraph__edge-line.is-active {
  stroke-width: 2.7;
  stroke-opacity: 1;
}

.research-hypergraph__edge.is-muted,
.research-hypergraph__edge-line.is-muted,
.research-hypergraph__edge-label.is-muted {
  opacity: 0.16;
}

.research-hypergraph__paper {
  color: var(--map-ink);
  cursor: pointer;
  opacity: 1;
  outline: none;
  text-decoration: none;
  transform: translate(var(--paper-theme-x), var(--paper-theme-y));
  transform-box: view-box;
  transform-origin: 0 0;
  transition: opacity 180ms ease, transform 420ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.research-hypergraph[data-map-view="timeline"] .research-hypergraph__paper {
  transform: translate(var(--paper-timeline-x), var(--paper-timeline-y));
}

.research-hypergraph__paper-hit {
  fill: transparent;
  stroke: none;
  pointer-events: all;
}

.research-hypergraph__paper-node {
  stroke: var(--map-ink);
  stroke-width: 2;
  transform-box: fill-box;
  transform-origin: center;
  transition: transform 160ms ease, filter 160ms ease, stroke-width 160ms ease;
  vector-effect: non-scaling-stroke;
}

.research-hypergraph__paper--manuscript .research-hypergraph__paper-node {
  fill: #fff;
}

.research-hypergraph__paper--publication .research-hypergraph__paper-node {
  fill: var(--map-ink);
}

.research-hypergraph__paper text {
  fill: var(--map-ink);
  stroke: rgba(255, 255, 255, 0.96);
  stroke-width: 4px;
  paint-order: stroke fill;
  font-size: 11.25px;
  font-weight: 650;
  letter-spacing: 0.005em;
  pointer-events: visiblePainted;
}

.research-hypergraph__paper.is-active .research-hypergraph__paper-node {
  transform: scale(1.14);
  filter: drop-shadow(0 1px 2px rgba(31, 41, 55, 0.2));
}

.research-hypergraph__paper:hover .research-hypergraph__paper-node,
.research-hypergraph__paper:focus-visible .research-hypergraph__paper-node,
.research-hypergraph__paper.is-selected .research-hypergraph__paper-node {
  transform: scale(1.32);
  filter: drop-shadow(0 2px 3px rgba(31, 41, 55, 0.28));
  stroke-width: 2.4;
}

.research-hypergraph__paper:focus-visible .research-hypergraph__paper-node {
  stroke: #111827;
  stroke-width: 3.4;
}

.research-hypergraph__paper.is-muted {
  opacity: 0.24;
}

.research-hypergraph__edge-label {
  stroke: rgba(255, 255, 255, 0.96);
  stroke-width: 6px;
  paint-order: stroke fill;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.015em;
  cursor: pointer;
  outline: none;
}

.research-hypergraph__edge-label--transfer-learning {
  fill: var(--map-transfer);
}

.research-hypergraph__edge-label--latent-space-model {
  fill: var(--map-latent);
}

.research-hypergraph__edge-label--hub-community-detection {
  fill: var(--map-hub);
}

.research-hypergraph__edge-label--multi-source-data {
  fill: var(--map-multisource);
}

.research-hypergraph__edge-label--generalization {
  fill: var(--map-generalization);
}

.research-hypergraph__edge-label:hover,
.research-hypergraph__edge-label:focus-visible,
.research-hypergraph__edge-label.is-active {
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}

.research-hypergraph__panel {
  min-width: 0;
  min-height: 400px;
  padding: 1.3rem 1.25rem;
  border-left: 1px solid var(--map-border);
  background: rgba(255, 255, 255, 0.96);
}

.research-hypergraph__panel > * {
  animation: research-map-panel-in 180ms ease both;
}

.research-hypergraph__panel h3 {
  margin: 0.25rem 0 0.7rem;
  font-size: 1rem;
  line-height: 1.35;
}

.research-hypergraph__panel p {
  margin: 0 0 0.8rem;
  font-size: 0.82rem;
  line-height: 1.55;
}

.research-hypergraph__eyebrow {
  color: var(--map-muted);
  font-size: 0.69rem !important;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.research-hypergraph__count,
.research-hypergraph__method-note {
  color: var(--map-muted);
}

.research-hypergraph__method-note {
  margin-top: 1.1rem !important;
  padding-top: 0.9rem;
  border-top: 1px solid #e5e7eb;
  font-size: 0.74rem !important;
}

.research-hypergraph__legend {
  display: grid;
  gap: 0.55rem;
  margin-top: 1.15rem;
  font-size: 0.78rem;
}

.research-hypergraph__legend span,
.research-hypergraph__work-list a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.research-hypergraph__legend-node {
  display: inline-block;
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  border: 2px solid var(--map-ink);
  border-radius: 50%;
  background: #fff;
}

.research-hypergraph__legend-node--publication {
  background: var(--map-ink);
}

.research-hypergraph__work-list {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.research-hypergraph__work-list li {
  margin: 0;
}

.research-hypergraph__work-list a {
  font-size: 0.79rem;
  font-weight: 600;
  line-height: 1.35;
  text-decoration: none;
}

.research-hypergraph__work-list a:hover span,
.research-hypergraph__work-list a:focus-visible span {
  text-decoration: underline;
}

.research-hypergraph__work-list small {
  display: block;
  margin: 0.15rem 0 0 1.5rem;
  color: var(--map-muted);
  font-size: 0.68rem;
}

.research-hypergraph__theme-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1rem 0;
}

.research-hypergraph__theme-chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.55rem;
  padding: 0.22rem 0.48rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: #fff;
  font-size: 0.64rem;
  font-weight: 700;
  line-height: 1.2;
}

.research-hypergraph__theme-chip--transfer-learning {
  color: var(--map-transfer);
}

.research-hypergraph__theme-chip--latent-space-model {
  color: var(--map-latent);
}

.research-hypergraph__theme-chip--hub-community-detection {
  color: var(--map-hub);
}

.research-hypergraph__theme-chip--multi-source-data {
  color: var(--map-multisource);
}

.research-hypergraph__theme-chip--generalization {
  color: var(--map-generalization);
}

.research-hypergraph__jump {
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
  margin-top: 0.25rem;
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
}

.publication-author-note {
  margin: 0 0 2rem;
  color: #5f6872;
  font-size: 0.88rem;
}

.publication-area {
  margin-top: 2.5rem;
}

.publication-area__description {
  margin: -0.25rem 0 1.4rem;
  color: #5f6872;
  font-style: italic;
}

.publication-list .publication-item {
  margin-bottom: 1.45rem;
  scroll-margin-top: 6rem;
  border-radius: 6px;
  transition: background-color 220ms ease, box-shadow 220ms ease;
}

.publication-list .publication-item.is-map-target {
  background: rgba(0, 114, 178, 0.08);
  box-shadow: 0 0 0 0.35rem rgba(0, 114, 178, 0.08);
}

.publication-item__title {
  font-weight: 500;
}

@keyframes research-map-panel-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1080px) and (min-width: 801px) {
  .research-hypergraph__heading {
    display: block;
  }

  .research-hypergraph__hint {
    margin-top: 0.25rem !important;
    text-align: left;
  }

  .research-hypergraph__heading-actions {
    justify-items: start;
    margin-top: 0.7rem;
  }

  .research-hypergraph__shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .research-hypergraph__panel {
    min-height: 0;
    border-top: 1px solid var(--map-border);
    border-left: 0;
  }
}

@media (max-width: 800px), (hover: none) and (pointer: coarse) {
  .research-hypergraph {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .research-hypergraph__canvas {
    background: linear-gradient(145deg, #fff 0%, var(--map-surface) 100%);
  }

  .research-hypergraph *,
  .publication-list .publication-item {
    animation: none !important;
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media print {
  .research-hypergraph {
    display: none;
  }
}