@import url("https://fonts.googleapis.com/css?family=Roboto:300,400,500,700|Roboto+Slab:100,300,400,500,700&display=swap");

:root {
  color-scheme: light;
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-hover: #f7f7f7;
  --text: #000000;
  --muted: #555555;
  --faint: #828282;
  --border: rgba(0, 0, 0, 0.1);
  --grid-line: rgba(0, 0, 0, 0.1);
  --accent: #b509ac;
  --accent-hover: #b509ac;
  --button-text: #ffffff;
  --header-bg: rgba(255, 255, 255, 0.95);
  --shadow: rgba(0, 0, 0, 0.04);
  --footer-bg: #1c1c1d;
  --footer-text: #e8e8e8;
  --footer-link: #ffffff;
  --landscape-edge: #647b82;
  --cluster-1: #0085a1;
  --cluster-2: #d46a2e;
  --cluster-3: #668f3d;
  --cluster-4: #9563a8;
  --cluster-5: #c84f5f;
  --cluster-6: #687d92;
  --cluster-7: #b07a22;
  --institution-1: #0072b2;
  --institution-2: #d55e00;
  --institution-3: #009e73;
  --institution-4: #a64d79;
  --institution-5: #d89000;
  --institution-6: #4a90b8;
  --institution-7: #7f6d5f;
  --institution-8: #6f7d3c;
  --institution-9: #7656a3;
  --institution-10: #2f7f7b;
  --institution-11: #929292;
  --institution-12: #c8c8c8;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #1c1c1d;
  --surface: #212529;
  --surface-hover: #262b30;
  --text: #e8e8e8;
  --muted: #c1c1c1;
  --faint: #999999;
  --border: #424246;
  --grid-line: rgba(255, 255, 255, 0.075);
  --accent: #2698ba;
  --accent-hover: #5ab6d0;
  --button-text: #ffffff;
  --header-bg: rgba(28, 28, 29, 0.95);
  --shadow: rgba(0, 0, 0, 0.2);
  --footer-bg: #e8e8e8;
  --footer-text: #1c1c1d;
  --footer-link: #000000;
  --landscape-edge: #71858c;
  --cluster-1: #3aa6c5;
  --cluster-2: #e99055;
  --cluster-3: #8ab45f;
  --cluster-4: #b783ca;
  --cluster-5: #df6b78;
  --cluster-6: #8da3b8;
  --cluster-7: #d3a44a;
  /* Muted institution fills keep white treemap labels at AA contrast. */
  --institution-1: #39789a;
  --institution-2: #a85f3b;
  --institution-3: #35806b;
  --institution-4: #985c7e;
  --institution-5: #8a6b2f;
  --institution-6: #51758a;
  --institution-7: #766359;
  --institution-8: #5f7049;
  --institution-9: #6f5b8f;
  --institution-10: #477675;
  --institution-11: #6f777d;
  --institution-12: #50565b;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 82px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Roboto", sans-serif;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.55;
  transition: background-color 160ms ease, color 160ms ease;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

button,
input,
select {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent);
  outline-offset: 2px;
}

.page-width {
  width: min(930px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  min-height: 58px;
  border-bottom: 1px solid var(--border);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
}

.navbar {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.site-title {
  color: var(--text);
  font-size: 1.1rem;
  white-space: nowrap;
}

.site-title:hover {
  color: var(--text);
  text-decoration: none;
}

.site-title strong {
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.92rem;
}

.nav-links a {
  color: var(--text);
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--accent);
  text-decoration: none;
}

.nav-links a.active {
  font-weight: 700;
}

.theme-toggle {
  width: 30px;
  height: 30px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 1.15rem;
  line-height: 1;
}

.theme-toggle:hover {
  color: var(--accent);
}

.language-toggle {
  min-width: 42px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 0.78rem;
  line-height: 1;
}

.language-toggle:hover {
  color: var(--accent);
}

.intro {
  padding: 64px 0 46px;
  border-bottom: 1px solid var(--border);
}

.intro h1 {
  margin: 0 0 3px;
  font-size: clamp(2.1rem, 6vw, 2.8rem);
  font-weight: 300;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.intro h1 strong {
  font-weight: 700;
}

.subtitle {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 1.02rem;
}

.intro > p:not(.subtitle) {
  max-width: 760px;
  margin: 0;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 24px;
  color: var(--faint);
  font-size: 0.86rem;
}

.stats strong {
  color: var(--accent);
  font-size: 1rem;
}

.landscape-section,
.papers-section,
.method {
  padding: 46px 0 64px;
}

.landscape-section {
  border-bottom: 1px solid var(--border);
}

.landscape-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.landscape-heading .section-note {
  max-width: 700px;
}

.landscape-actions {
  flex: 0 0 auto;
  display: flex;
  gap: 8px;
  align-items: center;
}

.landscape-mode-toggle {
  display: flex;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 3px;
}

.landscape-mode-toggle button {
  padding: 5px 9px;
  border: 0;
  border-left: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  font-size: 0.76rem;
}

.landscape-mode-toggle button:first-child {
  border-left: 0;
}

.landscape-mode-toggle button:hover,
.landscape-mode-toggle button.active {
  background: var(--surface-hover);
  color: var(--accent);
}

.landscape-mode-toggle button.active {
  box-shadow: inset 0 -2px var(--accent);
}

.plain-button {
  flex: 0 0 auto;
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg);
  color: var(--muted);
  font-size: 0.76rem;
}

.plain-button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.landscape-layout {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.landscape-plot {
  position: relative;
  min-width: 0;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: -1px -1px;
}

#landscape-canvas,
#author-landscape-canvas {
  display: block;
  width: 100%;
  cursor: grab;
  touch-action: none;
}

#author-landscape-canvas {
  position: absolute;
  inset: 0;
}

#landscape-canvas.is-panning,
#author-landscape-canvas.is-panning {
  cursor: grabbing;
}

.landscape-view-hidden {
  visibility: hidden;
  pointer-events: none;
}

.landscape-zoom-controls {
  position: absolute;
  z-index: 2;
  top: 12px;
  right: 12px;
  display: flex;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  box-shadow: 0 2px 8px var(--shadow);
}

.landscape-zoom-controls button {
  min-width: 30px;
  height: 29px;
  padding: 0 8px;
  border: 0;
  border-left: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1;
}

.landscape-zoom-controls button:first-child {
  border-left: 0;
}

.landscape-zoom-controls button:hover,
.landscape-zoom-controls button:focus-visible {
  background: var(--surface-hover);
  color: var(--accent);
}

.landscape-time-filter {
  padding: 14px 18px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.time-filter-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 12px;
  align-items: baseline;
  font-size: 0.72rem;
}

#time-filter-title {
  color: var(--faint);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

#time-range-readout {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

#time-range-count {
  margin-left: auto;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.time-range-control {
  --range-start: 0%;
  --range-end: 100%;
  position: relative;
  height: 58px;
  margin-top: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg);
}

.time-density-chart {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
}

.time-density-area {
  fill: var(--accent);
  fill-opacity: 0.12;
}

.time-density-line {
  fill: none;
  stroke: var(--accent);
  stroke-opacity: 0.5;
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.time-brush-mask,
.time-brush-window {
  position: absolute;
  top: 0;
  bottom: 0;
}

.time-brush-mask {
  z-index: 1;
  background: var(--surface);
  opacity: 0.72;
  pointer-events: none;
}

.time-brush-mask-start {
  left: 0;
  width: var(--range-start);
}

.time-brush-mask-end {
  right: 0;
  width: calc(100% - var(--range-end));
}

.time-brush-window {
  z-index: 2;
  right: calc(100% - var(--range-end));
  left: var(--range-start);
  border-top: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  cursor: grab;
  touch-action: none;
}

.time-brush-window.is-dragging {
  cursor: grabbing;
}

.time-range-control input[type="range"] {
  position: absolute;
  z-index: 3;
  top: 0;
  left: 0;
  width: 100%;
  height: 58px;
  margin: 0;
  appearance: none;
  background: transparent;
  pointer-events: none;
}

.time-range-control input[type="range"]:focus {
  z-index: 4;
  outline: 0;
}

.time-range-control input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: transparent;
}

.time-range-control input[type="range"]::-webkit-slider-thumb {
  width: 10px;
  height: 44px;
  margin-top: -21px;
  appearance: none;
  border: 1px solid var(--accent);
  border-radius: 2px;
  background: var(--surface);
  box-shadow: 0 1px 4px var(--shadow);
  pointer-events: auto;
}

.time-range-control input[type="range"]::-moz-range-track {
  height: 2px;
  background: transparent;
}

.time-range-control input[type="range"]::-moz-range-thumb {
  width: 8px;
  height: 42px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  background: var(--surface);
  box-shadow: 0 1px 4px var(--shadow);
  pointer-events: auto;
}

.time-range-control input[type="range"]:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px var(--surface-hover);
}

.time-range-control input[type="range"]:focus-visible::-moz-range-thumb {
  box-shadow: 0 0 0 3px var(--surface-hover);
}

.time-range-ticks {
  position: relative;
  height: 20px;
  margin: 4px 7px 0;
  color: var(--faint);
  font-size: 0.62rem;
  font-variant-numeric: tabular-nums;
}

.time-range-tick {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  white-space: nowrap;
}

.time-range-tick::before {
  display: block;
  width: 1px;
  height: 4px;
  margin: -4px auto 2px;
  background: var(--border);
  content: "";
}

.landscape-tooltip {
  position: absolute;
  z-index: 3;
  max-width: 220px;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg);
  box-shadow: 0 3px 10px var(--shadow);
  color: var(--text);
  font-size: 0.72rem;
  pointer-events: none;
}

.landscape-sidebar {
  padding: 17px 18px;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
  background: var(--surface);
}

.landscape-sidebar h3,
.landscape-subsection h3 {
  margin: 0 0 10px;
  font-size: 0.92rem;
  font-weight: 500;
}

.cluster-legend {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 12px;
  gap: 4px;
}

.cluster-key {
  width: 100%;
  padding: 5px 4px;
  display: grid;
  grid-template-columns: 10px 1fr;
  gap: 8px;
  align-items: start;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: var(--text);
  text-align: left;
}

.cluster-key:hover,
.cluster-key[aria-pressed="true"] {
  background: var(--surface-hover);
}

.cluster-key[aria-pressed="true"] {
  box-shadow: inset 2px 0 var(--cluster-color);
}

.cluster-swatch {
  width: 8px;
  height: 8px;
  margin-top: 5px;
  border-radius: 50%;
  background: var(--cluster-color);
}

.cluster-key strong,
.cluster-key small {
  display: block;
}

.cluster-key strong {
  font-size: 0.75rem;
  font-weight: 500;
}

.cluster-key small {
  margin-top: 1px;
  color: var(--faint);
  font-size: 0.65rem;
  line-height: 1.35;
}

.landscape-selection {
  margin: 0;
  padding: 0 0 0 28px;
  border-left: 1px solid var(--border);
}

.landscape-selection h3 {
  margin: 2px 0 3px;
  color: var(--accent);
  font-size: 1rem;
}

.landscape-selection h4 {
  margin: 15px 0 6px;
  font-size: 0.76rem;
  font-weight: 500;
}

.landscape-selection > p {
  margin: 0 0 8px;
  font-size: 0.75rem;
  line-height: 1.45;
}

.author-scope-note,
.author-map-count,
.author-index-description,
.author-index-count {
  margin: 0;
  color: var(--faint);
  font-size: 0.72rem;
  line-height: 1.45;
}

.author-map-count {
  margin-top: 9px;
  color: var(--accent);
}

.institution-treemap-wrap {
  position: relative;
  width: 100%;
  margin-top: 12px;
}

.institution-treemap {
  position: relative;
  width: 100%;
  height: clamp(220px, 24vw, 300px);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--surface-hover);
}

.institution-tile {
  position: absolute;
  min-width: 2px;
  min-height: 2px;
  padding: 5px 6px;
  overflow: hidden;
  border: 1px solid var(--surface);
  border-radius: 0;
  color: #fff;
  cursor: pointer;
  text-align: left;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
}

.institution-tile:hover {
  z-index: 1;
  filter: brightness(1.09);
}

.institution-tile.active {
  z-index: 2;
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.94);
}

.institution-tile:focus-visible {
  z-index: 1;
  outline: 2px solid var(--text);
  outline-offset: -3px;
}

.institution-tile strong,
.institution-tile span {
  display: block;
  overflow: hidden;
  line-height: 1.18;
  text-overflow: ellipsis;
}

.institution-tile strong {
  max-height: 2.36em;
  font-size: 0.64rem;
  font-weight: 500;
}

.institution-tile.compact {
  padding: 2px 3px;
}

.institution-tile.compact strong {
  font-size: 0.56rem;
}

.institution-tile.tiny {
  padding: 0;
}

.institution-tile span {
  margin-top: 2px;
  font-size: 0.6rem;
  font-weight: 500;
}

.institution-treemap-tooltip {
  position: absolute;
  z-index: 4;
  width: min(250px, calc(100% - 12px));
  padding: 8px 9px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--surface);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.16);
  color: var(--text);
  pointer-events: none;
}

.institution-treemap-tooltip strong,
.institution-treemap-tooltip span {
  display: block;
}

.institution-treemap-tooltip strong {
  margin-bottom: 4px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 500;
  line-height: 1.25;
}

.institution-treemap-tooltip span {
  color: var(--muted);
  font-size: 0.65rem;
  line-height: 1.35;
}

.institution-treemap-tooltip span + span {
  margin-top: 3px;
}

.institution-treemap-tooltip .institution-tooltip-action {
  margin-top: 6px;
  color: var(--accent);
  font-weight: 500;
}

.selection-affiliation {
  color: var(--muted);
}

.neighbor-list a {
  display: block;
  padding: 3px 0;
  color: var(--muted);
  font-size: 0.68rem;
}

.neighbor-list a:hover {
  color: var(--accent);
  text-decoration: none;
}

.selection-eyebrow,
.selection-full-title {
  color: var(--faint);
}

.selection-full-title {
  font-style: italic;
}

.selection-links {
  display: flex;
  gap: 7px;
  margin-top: 9px;
}

.selection-links a {
  padding: 2px 6px;
  border: 1px solid var(--accent);
  border-radius: 3px;
  font-size: 0.66rem;
}

.selection-links a:hover {
  background: var(--accent);
  color: var(--button-text);
  text-decoration: none;
}

.neighbor-list {
  display: grid;
  gap: 3px;
}

.neighbor-list button {
  padding: 3px 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.68rem;
  text-align: left;
}

.neighbor-list button:hover {
  color: var(--accent);
}

.landscape-subsection {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  column-gap: 20px;
  align-items: baseline;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.landscape-subsection > p {
  margin: 0 0 13px;
  color: var(--faint);
  font-size: 0.76rem;
}

.topic-cloud,
.bridge-list {
  grid-column: 2;
}

.author-index-section {
  align-items: start;
}

.author-search-label {
  display: block;
}

.author-search-label input {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.75rem;
}

.author-index-description {
  margin-bottom: 5px;
}

.author-index-count {
  margin-bottom: 12px;
  color: var(--accent);
}

.author-index {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 3px 12px;
  max-height: 330px;
  overflow: auto;
  padding-right: 5px;
}

.author-index-entry {
  min-width: 0;
  padding: 5px 6px;
  display: flex;
  gap: 8px;
  justify-content: space-between;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: var(--muted);
  font-size: 0.7rem;
  text-align: left;
}

.author-index-entry strong {
  flex: 1 1 auto;
  overflow: hidden;
  font-weight: 400;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.author-index-entry span {
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

.author-index-entry .author-institution-swatch {
  width: 7px;
  height: 7px;
  flex: 0 0 7px;
  align-self: center;
  border-radius: 50%;
}

.author-index-entry:hover,
.author-index-entry.active {
  background: var(--surface-hover);
  color: var(--accent);
}

.author-index-entry.active {
  box-shadow: inset 2px 0 var(--accent);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topic-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 11px;
  align-items: baseline;
}

.topic-word {
  padding: 1px 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: calc(0.72rem * var(--word-scale));
}

.topic-word:hover,
.topic-word[aria-pressed="true"] {
  color: var(--accent);
}

.topic-word[aria-pressed="true"] {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.bridge-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 5px 18px;
}

.bridge-list button {
  padding: 7px 0;
  border: 0;
  border-bottom: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  text-align: left;
}

.bridge-list button:hover strong {
  color: var(--accent);
}

.bridge-list strong,
.bridge-list span {
  display: block;
}

.bridge-list strong {
  font-size: 0.76rem;
  font-weight: 500;
}

.bridge-list span {
  margin-top: 2px;
  color: var(--faint);
  font-size: 0.65rem;
}

h2 {
  margin: 0 0 16px;
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  text-transform: lowercase;
}

.section-note {
  margin: -4px 0 28px;
  color: var(--muted);
  font-size: 0.93rem;
}

.search-panel {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  box-shadow: 0 2px 10px var(--shadow);
}

.search-box {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  gap: 10px;
  align-items: center;
  min-height: 54px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  color: var(--faint);
}

.search-box input {
  min-width: 0;
  padding: 14px 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 0.98rem;
}

.search-box input::placeholder {
  color: var(--faint);
}

kbd {
  min-width: 24px;
  padding: 1px 6px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg);
  color: var(--faint);
  font-size: 0.72rem;
  text-align: center;
}

.select-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.select-row label {
  padding: 10px 14px 12px;
  border-right: 1px solid var(--border);
}

.select-row label:last-child {
  border-right: 0;
}

.select-row span {
  display: block;
  margin-bottom: 3px;
  color: var(--faint);
  font-size: 0.72rem;
}

.select-row select {
  width: 100%;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 0.86rem;
}

.category-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 16px;
}

.category-filter {
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg);
  color: var(--muted);
  font-size: 0.78rem;
}

.category-filter span {
  margin-left: 5px;
  color: var(--faint);
  font-size: 0.68rem;
}

.category-filter:hover,
.category-filter.active {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--button-text);
}

.category-filter.active span,
.category-filter:hover span {
  color: var(--button-text);
  opacity: 0.8;
}

.results-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 43px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  color: var(--faint);
  font-size: 0.76rem;
}

.results-toolbar p {
  margin: 0;
}

.results-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
  justify-content: flex-end;
}

.export-status {
  color: var(--accent);
  white-space: nowrap;
}

.export-button {
  padding: 5px 9px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg);
  color: var(--muted);
  font-size: 0.72rem;
}

.export-button:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--button-text);
}

.export-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.export-menu {
  position: relative;
}

.export-menu-toggle::after {
  content: "▾";
  margin-left: 6px;
  font-size: 0.65rem;
}

.export-menu-options {
  position: absolute;
  z-index: 12;
  top: calc(100% + 5px);
  right: 0;
  min-width: 132px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  box-shadow: 0 8px 22px var(--shadow);
}

.export-menu-options[hidden] {
  display: none;
}

.export-menu-options button {
  display: block;
  width: 100%;
  padding: 6px 9px;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: var(--text);
  font-size: 0.74rem;
  text-align: left;
}

.export-menu-options button:hover,
.export-menu-options button:focus-visible {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
}

.paper-list {
  margin: 0;
}

.paper-card {
  padding: 25px 0 26px;
  border-bottom: 1px solid var(--border);
}

.paper-card:hover {
  background: linear-gradient(90deg, transparent, var(--surface-hover) 6%, var(--surface-hover) 94%, transparent);
}

.paper-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-bottom: 5px;
  color: var(--faint);
  font-size: 0.73rem;
}

.relation-badge {
  padding: 1px 6px;
  border-radius: 3px;
  background: color-mix(in srgb, var(--accent) 13%, transparent);
  color: var(--accent);
  font-weight: 500;
}

.paper-card h3 {
  margin: 0 0 3px;
  font-size: 1.17rem;
  font-weight: 500;
  line-height: 1.35;
}

.paper-card h3 a {
  color: var(--text);
}

.paper-card h3 a:hover {
  color: var(--accent);
  text-decoration: none;
}

.full-title {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-style: italic;
  line-height: 1.45;
}

.paper-authors {
  margin: -3px 0 9px;
  display: -webkit-box;
  overflow: hidden;
  color: var(--faint);
  font-size: 0.74rem;
  line-height: 1.4;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.summary {
  margin: 0;
  font-size: 0.9rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin: 12px 0 13px;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 1px 6px;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--faint);
  font-size: 0.68rem;
}

.card-links {
  display: flex;
  gap: 7px;
}

.card-links a,
.card-links button {
  padding: 3px 8px;
  border: 1px solid var(--accent);
  border-radius: 3px;
  background: transparent;
  color: var(--accent);
  font-family: inherit;
  font-size: 0.7rem;
  font-weight: 500;
  line-height: inherit;
}

.card-links a:hover,
.card-links button:hover,
.card-links button.active {
  background: var(--accent);
  color: var(--button-text);
  text-decoration: none;
}

.paper-abstract {
  display: grid;
  grid-template-rows: 0fr;
  margin-top: 0;
  padding: 0 16px;
  border-left: 2px solid var(--accent);
  border-left-color: transparent;
  background: color-mix(in srgb, var(--accent) 6%, var(--surface));
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
  visibility: hidden;
  transition:
    grid-template-rows 280ms cubic-bezier(0.22, 1, 0.36, 1),
    margin-top 280ms cubic-bezier(0.22, 1, 0.36, 1),
    padding 280ms cubic-bezier(0.22, 1, 0.36, 1),
    opacity 180ms ease,
    border-color 180ms ease,
    visibility 0s linear 280ms;
}

.paper-abstract.is-open {
  grid-template-rows: 1fr;
  margin-top: 14px;
  padding: 14px 16px;
  border-left-color: var(--accent);
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transition-delay: 0s;
}

.paper-abstract-inner {
  min-height: 0;
  overflow: hidden;
}

.paper-abstract-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.83rem;
  line-height: 1.65;
}

.paper-abstract-source {
  display: inline-block;
  margin-top: 9px;
  color: var(--faint);
  font-size: 0.68rem;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0 0;
  color: var(--faint);
  font-size: 0.76rem;
}

.pagination[hidden] {
  display: none;
}

.pagination p {
  margin: 0;
  white-space: nowrap;
}

.pagination-actions,
.pagination-actions label,
.page-buttons {
  display: flex;
  align-items: center;
}

.pagination-actions {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

.pagination-actions label {
  gap: 7px;
  white-space: nowrap;
}

.pagination-actions select {
  padding: 4px 22px 4px 7px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.74rem;
}

.page-buttons {
  gap: 4px;
}

.page-buttons button {
  min-width: 29px;
  height: 29px;
  padding: 0 7px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg);
  color: var(--muted);
  font-size: 0.72rem;
}

.page-buttons button:hover:not(:disabled),
.page-buttons button.active {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--button-text);
}

.page-buttons button:disabled {
  cursor: default;
  opacity: 0.42;
}

.page-ellipsis {
  width: 20px;
  text-align: center;
}

.empty-state {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
}

.empty-state button {
  padding: 6px 12px;
  border: 1px solid var(--accent);
  border-radius: 3px;
  background: transparent;
  color: var(--accent);
}

.method {
  border-top: 1px solid var(--border);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.method-grid h3 {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 1rem;
  font-weight: 500;
}

.method-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.site-footer {
  min-height: 36px;
  padding: 9px 0 8px;
  border-top: 0;
  background: var(--footer-bg);
  color: var(--footer-text);
  font-size: 0.76rem;
  text-align: center;
}

.site-footer a {
  color: var(--footer-link);
}

.site-footer a:hover {
  color: var(--accent);
  text-decoration: none;
}

@media (min-width: 1100px) {
  html {
    font-size: 17px;
  }

  .page-width {
    width: min(1200px, calc(100% - 72px));
  }

  .intro {
    padding: 52px 0 40px;
  }

  .intro > p:not(.subtitle) {
    max-width: 840px;
  }

  .landscape-section,
  .papers-section,
  .method {
    padding: 40px 0 56px;
  }

  .landscape-heading .section-note {
    max-width: 820px;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
  }

  .navbar {
    padding: 12px 0;
    align-items: flex-start;
  }

  .nav-links {
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
    font-size: 0.82rem;
  }

  .nav-home {
    display: none;
  }

  .intro {
    padding-top: 42px;
  }

  .select-row,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .landscape-layout {
    grid-template-columns: 1fr;
  }

  .landscape-plot {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .landscape-sidebar {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .cluster-legend {
    grid-template-columns: 1fr;
  }

  .landscape-selection {
    margin: 0;
    padding: 0 0 0 20px;
    border-top: 0;
    border-left: 1px solid var(--border);
  }

  .landscape-subsection {
    grid-template-columns: 1fr;
  }

  .topic-cloud,
  .bridge-list,
  .author-index-section > div:last-child {
    grid-column: 1;
  }

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

  .select-row label,
  .select-row label:last-child {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .select-row label:last-child {
    border-bottom: 0;
  }

  .method-grid {
    gap: 24px;
  }

  .pagination {
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .page-width {
    width: min(100% - 28px, 930px);
  }

  .site-title {
    font-size: 0.98rem;
  }

  .nav-links a[href="#method"],
  .nav-github {
    display: none;
  }

  .landscape-heading {
    display: block;
  }

  .landscape-actions {
    margin: 12px 0 14px;
    justify-content: space-between;
  }

  .author-index {
    grid-template-columns: 1fr;
  }

  #time-range-count {
    width: 100%;
    margin-left: 0;
  }

  .landscape-sidebar {
    grid-template-columns: 1fr;
  }

  .landscape-selection {
    margin-top: 15px;
    padding: 15px 0 0;
    border-top: 1px solid var(--border);
    border-left: 0;
  }

  .bridge-list {
    grid-template-columns: 1fr;
  }

  .intro h1 {
    font-size: 2rem;
  }

  .results-toolbar {
    align-items: flex-start;
  }

  .export-status {
    flex-basis: 100%;
    text-align: right;
  }

  .pagination {
    display: block;
  }

  .pagination-actions {
    justify-content: flex-start;
    margin-top: 10px;
  }

  .page-buttons {
    width: 100%;
    justify-content: space-between;
  }

  .page-number,
  .page-ellipsis {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
  }
}