:root {
  --primary-color: #3b78c4;
  --primary-strong: #2b5fa5;
  --secondary-color: #7fb1ec;
  --accent-color: #cfe3fa;
  --light-color: #ffffff;
  --dark-color: #1f2937;
  --navy-color: #14243d;
  --text-color: #111827;
  --muted-text-color: #4b5563;
  --background-color: #ffffff;
  --soft-background: #f2f7fe;
  --card-background: #ffffff;
  --panel-background: #f8fafd;
  --hairline-color: rgba(17, 24, 39, 0.08);
  --error-color: #c0392b;
  --series-gaze: #3b78c4;
  --series-gaze-light: #4f8cd8;
  --series-gaze-pale: #a9c9f0;
  --series-other: #7d8898;
  --chart-track: #e6edf6;
  --header-gradient: linear-gradient(to bottom, #eff6fe 0%, #ffffff 100%);
  --footer-gradient: linear-gradient(to right, #1f2937, #3b78c4);
  --link-color: #2b5fa5;
  --font-family:
    "Nunito", "Avenir Next", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono-font-family:
    ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 5px 15px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 18px 40px rgba(0, 0, 0, 0.12);
  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background-color);
  color: var(--text-color);
  font-family: var(--font-family);
  font-size: 18px;
  line-height: 1.75;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--link-color);
}

p {
  margin: 0 0 1rem;
}

figure {
  margin: 0;
}

[hidden] {
  display: none !important;
}

.container {
  width: min(100% - 32px, 1560px);
  margin-inline: auto;
}

.content-narrow {
  max-width: 1320px;
  margin-inline: auto;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* Header */

.header-section {
  position: relative;
  overflow: hidden;
  margin-bottom: 30px;
  padding: 90px 0 70px;
  background: var(--header-gradient);
  color: var(--dark-color);
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.header-section::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -18%;
  width: min(820px, 80vw);
  height: 190%;
  background: radial-gradient(
    ellipse at center,
    rgba(59, 120, 196, 0.16) 0%,
    rgba(255, 255, 255, 0) 70%
  );
  pointer-events: none;
  transform: rotate(-24deg);
}

.header-section .container {
  position: relative;
  z-index: 1;
}

.paper-title {
  display: inline-block;
  max-width: 1100px;
  margin: 0 0 18px;
  color: #111827;
  font-size: clamp(2.2rem, 4.6vw, 3.5rem);
  font-weight: 700;
  line-height: 1.12;
}

.title-accent {
  color: var(--primary-strong);
}

.paper-subtitle {
  margin: 0 0 12px;
  color: var(--muted-text-color);
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  font-weight: 400;
}

.author-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 12px;
  margin: 12px 0;
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.45;
}

.author-link {
  display: inline-block;
  padding: 3px 5px;
  border-radius: 4px;
  color: var(--text-color);
  text-decoration: none;
  transition:
    background-color var(--transition),
    transform var(--transition);
}

.author-link[href]:hover {
  background-color: rgba(59, 120, 196, 0.1);
  text-decoration: underline;
  transform: translateY(-1px);
}

.affiliation-line {
  margin: 8px 0 0;
  color: var(--muted-text-color);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.55;
}

.affiliation-line span {
  margin: 0 0.6em;
  white-space: nowrap;
}

.author-note {
  margin: 4px 0 0;
  color: var(--muted-text-color);
  font-size: 0.88rem;
  line-height: 1.5;
}

.author-note span {
  margin: 0 0.5em;
  white-space: nowrap;
}

.institution-logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px 22px;
  margin-top: 22px;
}

.institution-logo {
  width: 150px;
  max-height: 44px;
  object-fit: contain;
}

.institution-logo.logo-naver {
  width: 184px;
}

.institution-logo.logo-kaist {
  width: 128px;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background-color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.btn-icon {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
  fill: currentColor;
}

.primary-btn {
  background: var(--primary-color);
  color: #ffffff;
}

.primary-btn:hover {
  background: var(--primary-strong);
  color: #ffffff;
}

.secondary-btn {
  border-color: rgba(59, 120, 196, 0.35);
  background: #ffffff;
  color: var(--primary-strong);
}

.secondary-btn:hover {
  background: var(--soft-background);
  color: var(--primary-strong);
}

/* Sections */

.section {
  margin: 0 0 28px;
}

.section-title {
  margin: 120px 0 30px;
  color: var(--primary-color);
  font-size: clamp(1.65rem, 3vw, 2.15rem);
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
}

.section-title::after {
  content: "";
  display: block;
  width: 100px;
  height: 3px;
  margin: 15px auto 0;
  background: var(--secondary-color);
}

.section-lead {
  max-width: 960px;
  margin: -8px auto 24px;
  color: var(--text-color);
  font-size: clamp(1.08rem, 1.8vw, 1.22rem);
  font-weight: 600;
  line-height: 1.7;
}

.figure-caption {
  max-width: 95%;
  margin: 12px auto 0;
  color: var(--muted-text-color);
  font-size: 0.95rem;
  line-height: 1.55;
  text-align: center;
}

.dot-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.dot-list li {
  position: relative;
  padding-left: 26px;
  color: var(--text-color);
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  font-weight: 600;
  line-height: 1.62;
}

.dot-list li::before {
  content: "";
  position: absolute;
  top: 0.66em;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--primary-color);
  box-shadow: 0 0 0 5px rgba(207, 227, 250, 0.8);
}

.word-chip {
  padding: 0.05em 0.36em;
  border-radius: 6px;
  background: var(--accent-color);
  color: var(--navy-color);
  font-weight: 800;
  white-space: nowrap;
}

.word-error {
  color: var(--error-color);
  font-weight: 700;
  text-decoration: underline wavy rgba(192, 57, 43, 0.6);
  text-underline-offset: 3px;
}

/* TL;DR */

.tldr-box {
  margin: 24px 0 50px;
  padding: clamp(22px, 4vw, 36px);
  border: 1px solid rgba(59, 120, 196, 0.18);
  border-radius: var(--radius-lg);
  background: rgba(207, 227, 250, 0.3);
  box-shadow: var(--shadow-md);
}

.eyebrow-title {
  margin: 0 0 22px;
  color: var(--primary-color);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.1;
  text-align: center;
  text-transform: uppercase;
}

.callout {
  margin-bottom: 22px;
  padding: 22px;
  border: 2px solid rgba(59, 120, 196, 0.24);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-sm);
}

.lead {
  color: var(--text-color);
  font-size: clamp(1.08rem, 2vw, 1.25rem);
  font-weight: 500;
}

.lead-strong {
  margin: 0;
  color: var(--primary-strong);
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 700;
  line-height: 1.5;
}

.tldr-panel {
  margin-top: 22px;
  padding: clamp(16px, 3vw, 26px);
  border: 1px solid rgba(59, 120, 196, 0.14);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-sm);
}

/* Gaze viewer (interactive demo) */

.gaze-viewer {
  --gv-stage-width: 300px;
  display: grid;
  gap: clamp(16px, 2.4vw, 22px);
}

/* The image picker and the attention maps share the left column. */
.gv-head,
.gv-pane {
  display: grid;
  grid-template-columns: var(--gv-stage-width) minmax(0, 1fr);
  gap: 14px clamp(18px, 3vw, 34px);
  align-items: center;
}

.gv-panes {
  display: grid;
  gap: clamp(16px, 2.4vw, 22px);
}

/* As tall as the tallest example image, so that changing the example does not move the page. */
.gv-frame-slot {
  display: grid;
  align-items: center;
  border-radius: var(--radius-md);
  background: var(--soft-background);
}

.gv-frame {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  background: var(--navy-color);
  box-shadow: var(--shadow-sm);
}

.gv-frame canvas,
.gv-frame img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.gv-legend {
  display: grid;
  grid-template-columns: auto minmax(60px, 1fr) auto;
  gap: 8px;
  align-items: center;
  color: var(--muted-text-color);
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.2;
}

.gv-legend-bar {
  height: 10px;
  border-radius: 999px;
}

.gv-legend-bar.is-heat {
  background: linear-gradient(
    to right,
    #ffffcc,
    #ffeda0,
    #fed976,
    #feb24c,
    #fd8d3c,
    #fc4e2a,
    #e31a1c,
    #bd0026,
    #800026
  );
  box-shadow: inset 0 0 0 1px rgba(17, 24, 39, 0.12);
}

.gv-legend-title {
  grid-column: 1 / -1;
  color: var(--muted-text-color);
  font-size: 0.8rem;
  font-weight: 600;
  text-align: center;
}

.gaze-viewer > .gv-legend {
  width: var(--gv-stage-width);
}

.gv-side {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.gv-pane-title {
  margin: 0;
  color: var(--text-color);
  font-size: 0.98rem;
  font-weight: 800;
  line-height: 1.25;
}

.gv-pane.is-gaze .gv-pane-title {
  color: var(--primary-strong);
}

.gv-line {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  margin: 0;
}

.gv-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent-color);
  color: var(--primary-strong);
  font-size: 0.9rem;
  font-weight: 800;
  line-height: 1;
}

.gv-tag.is-answer {
  background: var(--primary-color);
  color: #ffffff;
}

.gv-question {
  flex: 1 1 260px;
  color: var(--muted-text-color);
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.55;
}

.gv-answer {
  color: var(--text-color);
  font-size: clamp(1.12rem, 1.9vw, 1.34rem);
  font-weight: 700;
  line-height: 1.7;
}

.gv-word-group {
  white-space: nowrap;
}

.gv-token {
  margin: 0 -0.16em;
  padding: 0.04em 0.16em;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition:
    background-color 120ms ease,
    color 120ms ease;
}

.gv-token.is-future,
.gv-word.is-future {
  color: rgba(114, 125, 141, 0.5);
}

.gv-token:hover {
  background: var(--accent-color);
  color: var(--navy-color);
}

.gv-token.is-current {
  background: var(--primary-color);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(59, 120, 196, 0.4);
}

.gv-token:focus-visible,
.gv-btn:focus-visible,
.gv-thumb:focus-visible,
.tab-pills button:focus-visible {
  outline: 3px solid rgba(59, 120, 196, 0.45);
  outline-offset: 2px;
}

.gv-status {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 10px 14px;
  border-left: 4px solid var(--secondary-color);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--soft-background);
  color: var(--dark-color);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.5;
}

.gv-status-word {
  overflow: hidden;
  color: var(--muted-text-color);
  font-size: 0.86rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.gv-status b {
  color: var(--primary-strong);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.gv-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  align-items: center;
  justify-content: space-between;
}

.gv-transport {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.gv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(59, 120, 196, 0.25);
  border-radius: 999px;
  background: #ffffff;
  color: var(--primary-strong);
  cursor: pointer;
  transition:
    background-color var(--transition),
    transform var(--transition);
}

.gv-btn:hover {
  background: var(--soft-background);
  transform: translateY(-1px);
}

.gv-btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.gv-btn.gv-play {
  width: 44px;
  height: 44px;
  border-color: transparent;
  background: var(--primary-color);
  color: #ffffff;
}

.gv-btn.gv-play:hover {
  background: var(--primary-strong);
}

.gv-progress {
  min-width: 4.2em;
  margin-left: 6px;
  color: var(--muted-text-color);
  font-size: 0.85rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.gv-thumbs {
  display: flex;
  gap: 7px;
  align-items: center;
}

/* The thumbnails share the width of the attention maps below them. */
.gv-thumb {
  flex: 1 1 0;
  min-width: 0;
  max-width: 56px;
  aspect-ratio: 1;
  padding: 0;
  overflow: hidden;
  border: 2px solid transparent;
  border-radius: 10px;
  background: var(--chart-track);
  cursor: pointer;
  opacity: 0.62;
  transition:
    opacity var(--transition),
    border-color var(--transition),
    transform var(--transition);
}

.gv-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gv-thumb:hover {
  opacity: 1;
  transform: translateY(-1px);
}

.gv-thumb[aria-pressed="true"] {
  border-color: var(--primary-color);
  opacity: 1;
  box-shadow: 0 3px 10px rgba(59, 120, 196, 0.35);
}

/* Motivation */

.motivation-card {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(300px, 1.05fr);
  gap: clamp(22px, 4vw, 44px);
  align-items: center;
  padding: clamp(22px, 4vw, 34px);
  border-radius: var(--radius-lg);
  background: var(--card-background);
  box-shadow: var(--shadow-md);
}

.motivation-text {
  display: grid;
  gap: 26px;
}

.flow-compare {
  display: grid;
  gap: 8px;
  padding: 16px 18px 18px;
  border: 1px solid rgba(59, 120, 196, 0.16);
  border-radius: var(--radius-md);
  background: var(--soft-background);
}

.flow-title {
  margin: 0 0 2px;
  color: var(--primary-strong);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

.flow-grid {
  display: grid;
  grid-template-columns: auto minmax(16px, 1fr) auto minmax(16px, 1fr) auto;
  gap: 6px;
  align-items: center;
  overflow-x: auto;
}

.flow-row {
  display: contents;
}

.flow-name {
  grid-column: 1 / -1;
  margin-top: 4px;
  color: var(--muted-text-color);
  font-size: 0.86rem;
  font-weight: 800;
  line-height: 1.2;
}

.flow-row.is-gaze .flow-name {
  color: var(--primary-strong);
}

.flow-box {
  display: grid;
  align-content: center;
  min-height: 52px;
  padding: 6px 10px;
  border: 1px solid #d5dbe5;
  border-radius: 10px;
  background: #ffffff;
  color: var(--dark-color);
  font-size: 0.86rem;
  font-weight: 800;
  line-height: 1.25;
  text-align: center;
}

.flow-box em {
  display: block;
  color: var(--muted-text-color);
  font-size: 0.78rem;
  font-style: normal;
  font-weight: 700;
}

.flow-box.is-select {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: #ffffff;
}

.flow-box.is-select em {
  color: #e6f0fc;
}

.flow-note {
  margin: 2px 0 0;
  color: var(--muted-text-color);
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.3;
}

.flow-arrow {
  position: relative;
  height: 2px;
  background: #9aa5b5;
}

.flow-arrow::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -1px;
  width: 7px;
  height: 7px;
  border-top: 2px solid #9aa5b5;
  border-right: 2px solid #9aa5b5;
  transform: translateY(-50%) rotate(45deg);
}

.flow-arrow.is-wide {
  grid-column: 2 / 5;
}

.flow-row.is-gaze .flow-arrow,
.flow-row.is-gaze .flow-arrow::after {
  border-color: var(--primary-color);
}

.flow-row.is-gaze .flow-arrow {
  background: var(--primary-color);
}

.attn-compare {
  padding: clamp(12px, 2vw, 18px);
  border: 1px solid rgba(17, 24, 39, 0.06);
  border-radius: var(--radius-md);
  background: var(--panel-background);
}

.attn-grid {
  display: grid;
  grid-template-columns: minmax(84px, 0.62fr) repeat(2, minmax(0, 1fr));
  gap: 10px 12px;
  align-items: center;
}

.attn-col-label {
  color: var(--muted-text-color);
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
}

.attn-row-label {
  display: grid;
  gap: 3px;
  color: var(--text-color);
  font-size: 0.98rem;
  font-weight: 800;
  line-height: 1.25;
}

.attn-row-label span {
  color: var(--muted-text-color);
  font-size: 0.8rem;
  font-weight: 600;
}

.attn-row-label.is-gaze {
  color: var(--primary-strong);
}

/* Approaches */

.figure-card {
  padding: clamp(12px, 2vw, 20px);
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: var(--radius-lg);
  background: var(--card-background);
  box-shadow: var(--shadow-md);
}

.figure-card img {
  display: block;
  width: 100%;
  border-radius: var(--radius-sm);
}

.figure-scroll {
  overflow-x: auto;
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.approach-card {
  position: relative;
  overflow: hidden;
  padding: 26px clamp(18px, 2.4vw, 26px) 22px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: var(--radius-lg);
  background: var(--card-background);
  box-shadow: var(--shadow-md);
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

.approach-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 5px;
  background: #cfd6e0;
}

.approach-card.is-ours::before {
  background: var(--primary-color);
}

.approach-card.is-ours {
  background: linear-gradient(
    to bottom,
    rgba(207, 227, 250, 0.32),
    #ffffff 46%
  );
}

.approach-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.approach-card h3 {
  margin: 0;
  color: var(--dark-color);
  font-size: 1.18rem;
  font-weight: 800;
  line-height: 1.3;
}

.approach-card.is-ours h3 {
  color: var(--primary-strong);
}

.approach-examples {
  margin: 2px 0 16px;
  color: var(--muted-text-color);
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.4;
}

.approach-card p:last-child {
  margin: 0;
  color: var(--text-color);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
}

.decision-line {
  display: grid;
  grid-template-columns: 1.5fr repeat(5, 1fr);
  gap: 5px;
  margin-bottom: 6px;
}

.decision-line span {
  position: relative;
  height: 26px;
  border-radius: 6px;
  background: #eceff4;
}

.decision-line .is-select {
  background: #9aa5b5;
}

.decision-line .is-select::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 11px;
  height: 11px;
  border: 2.5px solid #ffffff;
  border-radius: 999px;
  transform: translate(-50%, -50%);
}

.approach-card.is-ours .decision-line span {
  background: var(--accent-color);
}

.approach-card.is-ours .decision-line .is-select {
  background: var(--primary-color);
}

.decision-axis {
  display: grid;
  grid-template-columns: 1.5fr 5fr;
  gap: 5px;
  margin-bottom: 14px;
  color: var(--muted-text-color);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-transform: uppercase;
}

.decision-when {
  margin: 0 0 8px;
  color: var(--dark-color);
  font-size: 0.98rem;
  font-weight: 800;
  line-height: 1.4;
}

.approach-card.is-ours .decision-when {
  color: var(--primary-strong);
}

.inline-jump {
  margin: 22px 0 0;
  font-size: 1rem;
  font-weight: 700;
  text-align: center;
}

.inline-jump a {
  text-decoration: none;
}

.inline-jump a:hover {
  text-decoration: underline;
}

/* Method */

.method-card {
  padding: clamp(20px, 4vw, 34px);
  border-radius: var(--radius-lg);
  background: var(--card-background);
  box-shadow: var(--shadow-md);
}

.workflow-figure {
  padding: 16px;
  border: 1px solid rgba(17, 24, 39, 0.06);
  border-radius: var(--radius-md);
  background: var(--panel-background);
}

.workflow-figure img {
  display: block;
  width: 100%;
  border-radius: var(--radius-sm);
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.step-card {
  padding: 20px 20px 18px;
  border: 1px solid rgba(59, 120, 196, 0.16);
  border-radius: var(--radius-md);
  background: var(--soft-background);
}

.step-head {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}

.step-number {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-color);
  color: #ffffff;
  font-size: 0.98rem;
  font-weight: 800;
  line-height: 1;
}

.step-card h3 {
  margin: 0;
  color: var(--dark-color);
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.3;
}

.step-card p {
  margin: 0;
  color: var(--text-color);
  font-size: 0.99rem;
  font-weight: 500;
  line-height: 1.62;
}

.note-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.note-card {
  padding: 16px 20px;
  border-left: 4px solid var(--secondary-color);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
}

.note-card h3 {
  margin: 0 0 6px;
  color: var(--primary-strong);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.3;
}

.note-card p {
  margin: 0;
  color: var(--text-color);
  font-size: 0.97rem;
  font-weight: 500;
  line-height: 1.6;
}

/* Tabs */

.tab-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 0 0 22px;
}

.tab-pills button,
.custom-nav-pills .nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 18px;
  border: 1px solid rgba(59, 120, 196, 0.18);
  border-radius: 999px;
  background: #ffffff;
  color: var(--dark-color);
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    color var(--transition),
    background-color var(--transition);
}

.tab-pills button:hover,
.custom-nav-pills .nav-link:hover {
  color: var(--primary-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.tab-pills button[aria-selected="true"],
.custom-nav-pills .nav-link.active {
  background: var(--primary-color);
  color: #ffffff;
}

.tab-panel {
  padding: clamp(18px, 3.4vw, 30px);
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: var(--radius-lg);
  background: var(--card-background);
  box-shadow: var(--shadow-md);
}

.tab-panel + .tab-panel {
  margin-top: 18px;
}

.panel-heading {
  margin: 0 0 6px;
  color: var(--dark-color);
  font-size: 1.2rem;
  font-weight: 800;
  line-height: 1.3;
}

.panel-lead {
  margin: 0 0 20px;
  color: var(--text-color);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.6;
}

/* Video routing examples */

.video-example {
  padding: clamp(14px, 2.4vw, 20px);
  border: 1px solid rgba(17, 24, 39, 0.06);
  border-radius: var(--radius-md);
  background: var(--panel-background);
}

.video-example + .video-example {
  margin-top: 18px;
}

.qa-block {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}

.qa-block p {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.6;
}

.qa-question {
  color: var(--muted-text-color);
  font-weight: 700;
}

.qa-answer {
  color: var(--text-color);
  font-weight: 700;
}

.strip {
  margin-top: 10px;
}

.strip-label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted-text-color);
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1.3;
}

.strip-scroll {
  overflow-x: auto;
  border-radius: var(--radius-sm);
}

.strip-scroll img {
  display: block;
  width: 100%;
  min-width: 860px;
}

/* Token selection: eviction vs. gaze */

.image-examples-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  margin-bottom: 6px;
}

.image-examples-header .panel-heading {
  margin: 0;
}

.image-example-buttons {
  display: flex;
  flex-shrink: 0;
  gap: 8px;
  margin-left: auto;
}

.image-example-buttons button {
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid rgba(59, 120, 196, 0.24);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--primary-strong);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.image-example-buttons button:hover {
  background: var(--soft-background);
}

.image-example-buttons button[aria-pressed="true"] {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: #ffffff;
}

.image-example-buttons button:focus-visible {
  outline: 3px solid var(--secondary-color);
  outline-offset: 3px;
}

.selection-layer {
  position: relative;
  aspect-ratio: 1;
}

.selection-layer img {
  height: 100%;
}

.selection-layer > span {
  position: absolute;
  top: 4px;
  left: 0;
  width: 100%;
  color: #ffffff;
  font-size: clamp(0.8rem, 1.5vw, 1.15rem);
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.7);
}

.selection-top {
  display: grid;
  grid-template-columns: minmax(150px, 0.56fr) repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: stretch;
}

.selection-card {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 14px;
  border: 1px solid rgba(17, 24, 39, 0.06);
  border-radius: var(--radius-md);
  background: var(--panel-background);
}

.selection-card h4 {
  margin: 0;
  color: var(--dark-color);
  font-size: 1.04rem;
  font-weight: 800;
  line-height: 1.25;
}

.selection-card p {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.5;
}

.selection-card .qa-question {
  font-size: 0.95rem;
}

.selection-card.is-photo img {
  display: block;
  width: 100%;
  border-radius: var(--radius-sm);
}

.panel-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.panel-pair img {
  display: block;
  width: 100%;
  border-radius: 6px;
}

.kv-note {
  color: var(--muted-text-color);
  font-size: 0.84rem !important;
  font-weight: 700 !important;
}

.selection-ours {
  margin-top: 16px;
  padding: 16px;
  border: 1px solid rgba(59, 120, 196, 0.22);
  border-radius: var(--radius-md);
  background: rgba(207, 227, 250, 0.26);
}

.selection-ours-head {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 4px;
}

.selection-ours h4 {
  margin: 0;
  color: var(--primary-strong);
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.25;
}

.selection-ours > p {
  margin: 0 0 12px;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.6;
}

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

.selection-steps-pair {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.selection-step {
  display: grid;
  gap: 6px;
}

.selection-step-label {
  color: var(--muted-text-color);
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1.3;
}

/* Results */

.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 0 0 26px;
}

.kpi-tile {
  padding: 20px 20px 18px;
  border: 1px solid rgba(59, 120, 196, 0.14);
  border-radius: var(--radius-lg);
  background: linear-gradient(to bottom, var(--soft-background), #ffffff);
  box-shadow: var(--shadow-sm);
}

.kpi-kicker {
  display: block;
  margin-bottom: 6px;
  color: var(--muted-text-color);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.2;
  text-transform: uppercase;
}

.kpi-value {
  display: block;
  color: var(--primary-strong);
  font-size: clamp(2rem, 3.4vw, 2.7rem);
  font-weight: 800;
  line-height: 1.05;
}

.kpi-value small {
  font-size: 0.5em;
  font-weight: 800;
}

.kpi-label {
  display: block;
  margin-top: 8px;
  color: var(--dark-color);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.35;
}

.kpi-detail {
  display: block;
  margin-top: 4px;
  color: var(--muted-text-color);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.4;
}

.custom-nav-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 0 0 24px;
}

.research-question {
  margin: 16px 0;
  padding: clamp(16px, 3vw, 22px);
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: var(--radius-lg);
  background: var(--card-background);
  box-shadow: var(--shadow-md);
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

.research-question:not(.is-open):hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.question-header {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.question-number {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--accent-color);
  color: var(--primary-strong);
  font-weight: 800;
  line-height: 1;
}

.question-title {
  flex: 1 1 auto;
  margin: 0;
  color: var(--dark-color);
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.3;
}

.question-toggle {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--primary-color);
  cursor: pointer;
  transition:
    background-color var(--transition),
    box-shadow var(--transition);
}

.question-toggle:hover,
.question-toggle:focus-visible {
  outline: none;
  background: rgba(207, 227, 250, 0.6);
  box-shadow: 0 0 0 2px rgba(59, 120, 196, 0.25);
}

.chevron {
  display: inline-block;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1;
  transform: rotate(0deg);
  transition: transform var(--transition);
}

.research-question.is-open .chevron {
  transform: rotate(90deg);
}

.question-content {
  margin-top: 22px;
}

.result-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(250px, 1fr);
  gap: clamp(18px, 3vw, 30px);
  align-items: start;
}

.chart-card {
  min-width: 0;
  padding: clamp(14px, 2.4vw, 20px);
  border: 1px solid rgba(17, 24, 39, 0.06);
  border-radius: var(--radius-md);
  background: var(--panel-background);
}

.chart-title {
  margin: 0;
  color: var(--dark-color);
  font-size: 1.06rem;
  font-weight: 800;
  line-height: 1.3;
}

.chart-subtitle {
  margin: 2px 0 12px;
  color: var(--muted-text-color);
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.45;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin: 0 0 8px;
  padding: 0;
  list-style: none;
  color: var(--muted-text-color);
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1.3;
}

.chart-legend li {
  display: inline-flex;
  gap: 7px;
  align-items: center;
}

.legend-swatch {
  display: inline-block;
  flex: 0 0 auto;
  width: 14px;
  height: 10px;
  border-radius: 3px;
}

.legend-key {
  flex: 0 0 auto;
  width: 30px;
  height: 14px;
  overflow: visible;
}

.swatch-gaze {
  background: var(--series-gaze);
}

.swatch-gaze-light {
  background: var(--series-gaze-light);
}

.swatch-gaze-pale {
  background: var(--series-gaze-pale);
}

.swatch-other {
  background: var(--series-other);
}

.chart-svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
  font-family: var(--font-family);
}

.chart-svg .grid-line {
  stroke: #e3e8ef;
  stroke-width: 1;
}

.chart-svg .zero-line {
  stroke: #9aa5b5;
  stroke-width: 1;
}

.chart-svg .tick-label {
  fill: var(--muted-text-color);
  font-size: 12px;
  font-weight: 600;
}

.chart-svg .axis-title {
  fill: var(--muted-text-color);
  font-size: 12.5px;
  font-weight: 700;
}

.chart-svg .series-line {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-svg .series-line.is-emphasis {
  stroke-width: 2.6;
}

.chart-svg .direct-label {
  fill: var(--dark-color);
  font-size: 12.5px;
  font-weight: 800;
}

.chart-svg .direct-label.is-muted {
  fill: var(--muted-text-color);
  font-weight: 700;
}

.chart-svg .hit {
  fill: transparent;
  cursor: pointer;
}

.chart-svg .marker,
.chart-svg .series-line,
.chart-svg text {
  pointer-events: none;
}

.chart-svg .hit:focus {
  outline: none;
}

.chart-svg .hit:focus-visible + .marker,
.chart-svg .hit:hover + .marker {
  stroke: var(--navy-color);
  stroke-width: 2;
}

.chart-tooltip {
  position: fixed;
  z-index: 60;
  max-width: 280px;
  padding: 9px 12px;
  border-radius: 10px;
  background: var(--navy-color);
  color: #ffffff;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.45;
  pointer-events: none;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
  opacity: 0;
  transform: translateY(4px);
  transition:
    opacity 120ms ease,
    transform 120ms ease;
}

.chart-tooltip.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.chart-tooltip strong {
  display: block;
  font-size: 0.98rem;
  font-weight: 800;
}

.chart-tooltip span {
  display: block;
  color: #c9d6ea;
}

.table-view {
  margin-top: 12px;
}

.table-view summary {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  color: var(--primary-strong);
  font-size: 0.88rem;
  font-weight: 800;
  cursor: pointer;
}

.table-view summary:hover {
  text-decoration: underline;
}

.table-scroll {
  margin-top: 10px;
  overflow-x: auto;
  border: 1px solid rgba(59, 120, 196, 0.14);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
}

.data-table th,
.data-table td {
  padding: 8px 10px;
  border-bottom: 1px solid #edf2f7;
  text-align: center;
  white-space: nowrap;
}

.data-table thead th {
  background: var(--primary-color);
  color: #ffffff;
  font-weight: 800;
}

.data-table tbody th {
  color: var(--text-color);
  font-weight: 700;
  text-align: left;
}

.data-table td {
  color: var(--muted-text-color);
  font-weight: 700;
}

.data-table tr:last-child th,
.data-table tr:last-child td {
  border-bottom: 0;
}

.data-table .highlight-row th,
.data-table .highlight-row td {
  background: rgba(207, 227, 250, 0.4);
  color: var(--primary-strong);
}

.data-table .group-row th {
  background: #f3f5f8;
  color: var(--muted-text-color);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-align: left;
  text-transform: uppercase;
}

/* Diverging bars (video) */

.delta-group + .delta-group {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--hairline-color);
}

.delta-group h4 {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 10px;
  align-items: baseline;
  margin: 0 0 8px;
  color: var(--dark-color);
  font-size: 0.98rem;
  font-weight: 800;
  line-height: 1.3;
}

.delta-group h4 span {
  color: var(--muted-text-color);
  font-size: 0.82rem;
  font-weight: 600;
}

.delta-row {
  display: grid;
  grid-template-columns: minmax(118px, 0.9fr) minmax(0, 1.5fr);
  gap: 10px;
  align-items: center;
  padding: 3px 0;
  border-radius: 6px;
}

.delta-row:hover,
.delta-row:focus-visible {
  outline: none;
  background: rgba(207, 227, 250, 0.35);
}

.delta-label {
  color: var(--text-color);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.25;
}

.delta-label em {
  display: block;
  color: var(--muted-text-color);
  font-size: 0.8rem;
  font-style: normal;
  font-weight: 600;
}

.delta-track {
  position: relative;
  height: 30px;
}

.delta-track::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: #9aa5b5;
}

.delta-bar {
  position: absolute;
  top: 6px;
  height: 18px;
  width: var(--w);
  background: var(--series-other);
}

.delta-bar.is-pos {
  left: 50%;
  border-radius: 0 4px 4px 0;
}

.delta-bar.is-neg {
  right: 50%;
  border-radius: 4px 0 0 4px;
}

.delta-bar.is-gaze {
  background: var(--series-gaze);
}

.delta-value {
  position: absolute;
  top: 50%;
  color: var(--text-color);
  font-size: 0.88rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  transform: translateY(-50%);
}

.delta-value.is-pos {
  left: calc(50% + var(--w) + 7px);
}

.delta-value.is-neg {
  right: calc(50% + var(--w) + 7px);
}

.delta-axis {
  display: grid;
  grid-template-columns: minmax(118px, 0.9fr) minmax(0, 1.5fr);
  gap: 10px;
  margin-top: 6px;
  color: var(--muted-text-color);
  font-size: 0.78rem;
  font-weight: 700;
}

.delta-axis-scale {
  display: flex;
  justify-content: space-between;
}

/* Meters (efficiency) */

.meter-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.meter-card {
  padding: clamp(14px, 2.4vw, 20px);
  border: 1px solid rgba(17, 24, 39, 0.06);
  border-radius: var(--radius-md);
  background: var(--panel-background);
}

.meter-head {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 14px;
}

.meter-saving {
  color: var(--primary-strong);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1;
}

.meter-row {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) 5.6em;
  gap: 10px;
  align-items: center;
  padding: 4px 0;
}

.meter-label {
  color: var(--text-color);
  font-size: 0.9rem;
  font-weight: 800;
}

.meter-track {
  display: flex;
  gap: 2px;
  height: 18px;
  overflow: hidden;
  border-radius: 4px;
  background: var(--chart-track);
}

.meter-seg {
  width: var(--w);
  height: 100%;
}

.meter-seg:last-child {
  border-radius: 0 4px 4px 0;
}

.meter-seg.is-dense {
  background: var(--series-other);
}

.meter-seg.is-attn {
  background: var(--series-gaze);
}

.meter-seg.is-route {
  background: var(--series-gaze-light);
}

.meter-seg.is-ctx {
  background: var(--series-gaze-pale);
}

.meter-value {
  color: var(--text-color);
  font-size: 0.9rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.meter-value small {
  color: var(--muted-text-color);
  font-size: 0.84em;
  font-weight: 700;
}

.chart-note {
  margin: 12px 0 0;
  color: var(--muted-text-color);
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.45;
}

.meter-card .chart-legend {
  margin: 10px 0 0;
}

.result-notes {
  margin-top: 18px;
}

/* Horizontal bars (routing accuracy) */

.hbar-row {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) 5.6em;
  gap: 10px;
  align-items: center;
  padding: 4px 0;
  border-radius: 6px;
}

.hbar-row:hover,
.hbar-row:focus-visible {
  outline: none;
  background: rgba(207, 227, 250, 0.35);
}

.hbar-label {
  color: var(--text-color);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.25;
}

.hbar-track {
  height: 18px;
  border-radius: 4px;
  background: var(--chart-track);
}

.hbar-fill {
  display: block;
  width: var(--w);
  height: 100%;
  border-radius: 0 4px 4px 0;
  background: var(--series-gaze);
}

.hbar-fill.is-other {
  background: var(--series-other);
}

.hbar-value {
  color: var(--text-color);
  font-size: 0.9rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.hbar-value small {
  color: var(--muted-text-color);
  font-size: 0.86em;
  font-weight: 600;
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

/* Findings */

.findings-title {
  margin: 30px 0 0;
  color: var(--primary-strong);
  font-size: 1.25rem;
  font-weight: 800;
}

.findings-list {
  margin: 18px 0 0;
  padding-left: 0;
  counter-reset: finding-number;
}

.finding-item {
  position: relative;
  margin-bottom: 16px;
  padding-left: 44px;
  list-style: none;
  counter-increment: finding-number;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.6;
}

.finding-item::before {
  content: counter(finding-number);
  position: absolute;
  left: 0;
  top: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary-color);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
}

/* Citation, acknowledgements, footer */

.citation-box {
  padding: clamp(18px, 4vw, 34px);
  border-radius: var(--radius-lg);
  background: #f1f1f1;
}

.citation-box pre {
  margin: 0;
  overflow-x: auto;
  font-family: var(--mono-font-family);
  font-size: 0.9rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.closing-text {
  max-width: 900px;
  margin: 0 auto;
  color: var(--muted-text-color);
  font-size: 1rem;
  text-align: center;
}

.closing-text p:last-child {
  margin-bottom: 0;
}

.footer {
  margin-top: 90px;
  padding: 42px 0;
  background: var(--footer-gradient);
  color: #ffffff;
  text-align: center;
}

.footer p:last-child {
  margin-bottom: 0;
}

.footer a {
  color: #ffffff;
}

/* Responsive */

@media (max-width: 1000px) {
  .kpi-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .motivation-card {
    grid-template-columns: 1fr;
  }

  .result-layout,
  .analysis-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  body {
    font-size: 17px;
  }

  .header-section {
    padding: 62px 0 48px;
  }

  .approach-grid,
  .step-grid,
  .note-grid,
  .meter-grid {
    grid-template-columns: 1fr;
  }

  .gaze-viewer {
    --gv-stage-width: 240px;
  }

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

  .selection-card.is-photo {
    grid-column: 1 / -1;
    grid-template-columns: minmax(110px, 180px) minmax(0, 1fr);
    align-items: center;
  }

  .custom-nav-pills,
  .tab-pills {
    justify-content: stretch;
  }

  .custom-nav-pills .nav-link,
  .tab-pills button {
    flex: 1 1 220px;
  }
}

@media (max-width: 760px) {
  .gaze-viewer {
    --gv-stage-width: min(100%, 360px);
  }

  .gv-head,
  .gv-pane {
    grid-template-columns: minmax(0, 1fr);
  }

  .gv-stage,
  .gv-thumbs,
  .gaze-viewer > .gv-legend {
    width: var(--gv-stage-width);
    margin-inline: auto;
  }

  .gv-thumbs {
    justify-content: center;
  }

  /* Each pane starts with its title, above the attention map. */
  .gv-side {
    display: contents;
  }

  .gv-pane-title {
    order: -1;
    text-align: center;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 24px, 1560px);
  }

  .paper-title {
    font-size: 1.9rem;
  }

  .author-line {
    font-size: 0.98rem;
  }

  .institution-logo {
    width: 124px;
  }

  .institution-logo.logo-naver {
    width: 152px;
  }

  .institution-logo.logo-kaist {
    width: 106px;
  }

  .action-row,
  .custom-nav-pills,
  .tab-pills {
    flex-direction: column;
    align-items: stretch;
  }

  .btn,
  .custom-nav-pills .nav-link,
  .tab-pills button {
    flex: 0 1 auto;
    width: 100%;
  }

  .kpi-row {
    grid-template-columns: 1fr;
  }

  .question-header {
    align-items: flex-start;
  }

  .question-toggle {
    width: 34px;
    height: 34px;
  }

  .figure-card {
    padding: 10px;
  }

  .selection-top,
  .selection-steps {
    grid-template-columns: 1fr;
  }

  .selection-card.is-photo {
    grid-column: auto;
  }

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

  .attn-grid > .attn-corner {
    display: none;
  }

  .attn-row-label {
    grid-column: 1 / -1;
    grid-row: auto;
    margin-top: 6px;
  }

  .attn-col-label {
    grid-row: 1;
  }

  .gv-controls {
    justify-content: center;
  }

  .flow-compare {
    padding: 14px 12px 16px;
  }

  .flow-grid {
    grid-template-columns: auto minmax(12px, 1fr) auto minmax(12px, 1fr) auto;
    gap: 4px;
  }

  .flow-box {
    padding: 6px 6px;
    font-size: 0.78rem;
  }

  .figure-scroll > img {
    min-width: 760px;
  }
}

@media (hover: none) {
  .approach-card:hover,
  .research-question:not(.is-open):hover,
  .btn:hover,
  .custom-nav-pills .nav-link:hover,
  .tab-pills button:hover,
  .gv-btn:hover,
  .gv-thumb:hover {
    transform: none;
  }
}

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

  * {
    transition-duration: 0.01ms !important;
  }
}