:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --text: #1e293b;
  --muted: #64748b;
  --light: #94a3b8;
  --background: #ffffff;
  --background-light: #f8fafc;
  --background-accent: #f1f5f9;
  --border: #e2e8f0;
  --green: #e0ffe0;
  --green-text: #17643b;
  --content-width: 1152px;
  --narrow-width: 900px;
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img,
video {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
select {
  font: inherit;
}

:focus-visible {
  outline: 3px solid rgb(37 99 235 / 0.28);
  outline-offset: 3px;
}

.container {
  width: min(100%, var(--content-width));
  margin: 0 auto;
}

.container.narrow {
  width: min(100%, var(--narrow-width));
}

.publication-header {
  padding: 64px 24px 58px;
  background: #ffffff;
}

.publication-content {
  max-width: 1024px;
  text-align: center;
}

h1,
h2,
h3,
p,
figure {
  margin-top: 0;
}

h1 {
  margin-bottom: 26px;
  color: var(--text);
  font-size: clamp(2.45rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0;
}

.authors {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-bottom: 14px;
  color: var(--primary);
  font-size: 1.13rem;
  font-weight: 600;
}

.authors sup,
.affiliations sup {
  font-size: 0.65em;
  font-weight: 700;
}

.authors span:not(:last-child)::after {
  margin-left: 14px;
  color: var(--muted);
  content: ",";
}

.authors a {
  position: relative;
}

.authors a::after {
  position: absolute;
  right: 0;
  bottom: -3px;
  left: 0;
  height: 2px;
  background: var(--primary);
  content: "";
  opacity: 0;
  transform: scaleX(0.5);
  transition: opacity 160ms ease, transform 160ms ease;
}

.authors a:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.affiliations {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 5px 18px;
  margin-bottom: 10px;
  color: var(--text);
  font-size: 1rem;
  font-weight: 500;
}

.affiliations a:hover {
  color: var(--primary);
}

.contribution-note {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 7px;
  margin: 6px 0 12px;
  color: var(--muted);
  font-size: 0.82rem;
}

.author-role {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--background-light);
  box-shadow: var(--shadow-sm);
}

.contribution-note sup {
  color: var(--primary);
  font-weight: 700;
}

.venue {
  width: fit-content;
  margin: 0 auto 22px;
  padding: 7px 13px;
  color: #7a4b00;
  border: 1px solid #e9b949;
  border-radius: 8px;
  background: #fff9db;
  box-shadow: 0 3px 10px rgb(122 75 0 / 0.08);
  font-size: 1rem;
  font-weight: 700;
}

.actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.button {
  min-height: 43px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  color: #ffffff;
  border: 0;
  border-radius: 999px;
  background: var(--text);
  box-shadow: var(--shadow-md);
  font-size: 0.92rem;
  font-weight: 600;
  transition: background 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

a.button:hover {
  background: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.button.disabled {
  color: #cbd5e1;
  cursor: default;
}

.button small {
  font-size: 0.68rem;
  font-weight: 500;
}

.section {
  padding: 64px 24px;
}

.section.is-light {
  background: var(--background-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-title {
  margin-bottom: 30px;
  color: var(--text);
  font-size: clamp(1.85rem, 3.2vw, 2.35rem);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  letter-spacing: 0;
}

.section-intro {
  max-width: 840px;
  margin: -12px auto 32px;
  color: var(--muted);
  font-size: 1.08rem;
  text-align: center;
}

.content {
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.8;
  text-align: justify;
}

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

.module-figure {
  margin: 0 auto;
  text-align: center;
}

.module-figure img {
  width: 100%;
  height: auto;
  margin: 0 auto;
  border-radius: 10px;
}

.abstract-motivation .module-figure,
.method .module-figure {
  max-width: 1080px;
}

.abstract-motivation .module-figure img,
.method .module-figure img {
  box-shadow: var(--shadow-md);
}

.abstract-copy {
  max-width: var(--narrow-width);
  margin: 0 auto 40px;
}

.abstract-motivation {
  padding-top: 34px;
  border-top: 1px solid var(--border);
}

.abstract-motivation h3,
.method-title {
  max-width: 940px;
  margin: 0 auto 26px;
  color: var(--text);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.5;
  text-align: center;
}

.method-title {
  margin-bottom: 20px;
}

figcaption {
  margin-top: 10px;
  color: #555555;
  font-size: 1rem;
  line-height: 1.55;
  text-align: center;
}

.video-frame {
  max-width: 1080px;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 12px;
  background: #111827;
  box-shadow: var(--shadow-lg);
}

.video-frame video {
  width: 100%;
  max-height: 76vh;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #111827;
}

.result-module {
  padding: 26px 0 54px;
}

.result-module + .result-module {
  border-top: 1px solid var(--border);
}

.result-module:last-child {
  padding-bottom: 0;
}

.result-title {
  margin-bottom: 24px;
  color: var(--text);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.45;
  text-align: center;
}

.result-intro {
  max-width: 850px;
  margin: -9px auto 22px;
  color: var(--muted);
  font-size: 1.02rem;
  text-align: center;
}

.attention-figure {
  max-width: 760px;
}

.attention-figure img {
  width: min(100%, 760px);
  margin-right: auto;
  margin-left: auto;
}

.sensitivity-figure {
  max-width: 1080px;
}

.paper-table {
  max-width: 1050px;
  margin: 0 auto;
}

.table-scroll {
  overflow-x: auto;
  padding-bottom: 3px;
}

.paper-table table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  border-top: 2px solid #334155;
  border-bottom: 2px solid #334155;
  background: #ffffff;
  font-size: 0.9rem;
}

.paper-table th,
.paper-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: center;
  white-space: nowrap;
}

.paper-table thead th {
  color: var(--text);
  background: var(--background-accent);
  font-weight: 700;
}

.paper-table thead tr:last-child th {
  border-bottom: 2px solid #94a3b8;
}

.paper-table tbody th {
  color: var(--text);
  background: #fafafa;
  font-weight: 600;
}

.paper-table tbody tr:nth-child(4n + 1) td,
.paper-table tbody tr:nth-child(4n + 1) th {
  border-top: 1.5px solid #94a3b8;
}

.paper-table td.strong {
  color: var(--green-text);
  background: var(--green);
  font-weight: 600;
}

.paper-table td.best {
  font-weight: 800;
}

.paper-table .average th,
.paper-table .average td {
  border-top: 1.5px solid #94a3b8;
  font-weight: 700;
}

.paper-table small {
  color: var(--muted);
  font-size: 0.78em;
}

.compact-table {
  max-width: 980px;
}

.compact-table table {
  min-width: 780px;
}

.paper-table figcaption {
  max-width: 900px;
  margin-right: auto;
  margin-left: auto;
}

.result-split {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.5fr);
  align-items: center;
  gap: 36px;
}

.result-copy {
  color: var(--muted);
  font-size: 1.02rem;
}

.result-copy ul {
  margin: 0;
  padding-left: 22px;
}

.result-copy li + li {
  margin-top: 13px;
}

.demo-controls {
  margin-bottom: 20px;
}

.demo-tabs {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 7px;
}

.demo-tab {
  min-height: 52px;
  padding: 8px;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.25;
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}

.demo-tab:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.demo-tab[aria-selected="true"] {
  color: #ffffff;
  border-color: var(--primary);
  background: var(--primary);
}

.demo-select-label {
  display: none;
}

.demo-gallery {
  padding-top: 22px;
  border-top: 1px solid var(--border);
}

.demo-task {
  animation: reveal 220ms ease both;
}

.task-heading {
  margin-bottom: 22px;
  text-align: center;
}

.task-heading h3 {
  margin-bottom: 7px;
  font-size: 1.28rem;
}

.task-model {
  width: fit-content;
  margin: 0 auto 16px;
  padding: 5px 10px;
  color: var(--primary);
  border: 1px solid rgb(37 99 235 / 0.22);
  border-radius: 999px;
  background: rgb(37 99 235 / 0.07);
  font-size: 0.8rem;
  font-weight: 700;
}

.instruction-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-width: 980px;
  margin: 0 auto;
  text-align: left;
}

.instruction-comparison p {
  min-height: 86px;
  display: grid;
  align-content: start;
  gap: 7px;
  margin: 0;
  padding: 13px 15px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #ffffff;
}

.instruction-comparison p:last-child {
  border-color: #ead37b;
  background: #fffbe6;
}

.instruction-comparison strong {
  color: var(--text);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.instruction-comparison p:last-child strong {
  color: #8a6500;
}

.instruction-comparison span {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

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

.clip {
  margin: 0;
  overflow: hidden;
  border: 2px solid transparent;
  border-radius: 10px;
  background: #ffffff;
  box-shadow: var(--shadow-md);
}

.clip.is-contradiction:not(.is-igar) {
  border-color: #dc5a50;
  box-shadow: 0 8px 20px rgb(180 35 24 / 0.13);
}

.clip.is-contradiction.is-igar {
  border-color: #3c9a68;
  box-shadow: 0 8px 20px rgb(23 100 59 / 0.14);
}

.clip video {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  background: #111827;
  transform: rotate(180deg);
}

.clip.is-upright video {
  transform: none;
}

.clip figcaption {
  min-height: 96px;
  display: grid;
  align-items: center;
  justify-items: center;
  gap: 3px;
  margin: 0;
  padding: 10px 8px 12px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  font-size: 0.76rem;
}

.clip-condition {
  color: var(--muted);
}

.clip-policy {
  color: var(--text);
  font-weight: 700;
}

.clip-outcome {
  margin-top: 2px;
  color: #17643b;
  font-size: 0.86rem;
}

.clip:not(.is-contradiction) .clip-policy {
  color: var(--text);
}

.clip.is-contradiction .clip-condition {
  color: #b42318;
}

.clip.is-contradiction figcaption {
  background: #fff7f6;
}

.clip.is-contradiction.is-igar figcaption {
  background: #f2fbf5;
}

.clip.is-contradiction:not(.is-igar) .clip-outcome {
  color: #b42318;
}

.clip.is-contradiction.is-igar .clip-outcome {
  color: #17643b;
}

.citation-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 16px;
}

.citation-heading .section-title {
  margin-bottom: 0;
  text-align: left;
}

.copy-button {
  min-height: 40px;
  padding: 8px 14px;
  color: #ffffff;
  border: 0;
  border-radius: 10px;
  background: var(--primary);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
}

.copy-button:hover {
  background: var(--primary-hover);
}

.copy-button.copied {
  background: #10b981;
}

.citation pre {
  overflow-x: auto;
  margin: 0;
  padding: 22px;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--background-accent);
  box-shadow: var(--shadow-sm);
  font-size: 0.86rem;
  line-height: 1.6;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
  padding: 38px 24px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: var(--background-light);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}

.site-footer div {
  display: flex;
  gap: 16px;
  color: var(--primary);
  font-weight: 600;
}

.site-footer a:hover {
  text-decoration: underline;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .demo-tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .result-split {
    grid-template-columns: 1fr;
  }

  .result-copy {
    max-width: 760px;
    margin: 0 auto;
  }
}

@media (max-width: 720px) {
  .publication-header {
    padding: 44px 18px 38px;
  }

  h1 {
    font-size: 2.15rem;
    line-height: 1.18;
  }

  .authors {
    gap: 5px 10px;
    font-size: 1rem;
  }

  .authors span:not(:last-child)::after {
    margin-left: 10px;
  }

  .affiliations {
    align-items: center;
    flex-direction: column;
    gap: 3px;
    font-size: 0.92rem;
  }

  .venue {
    margin-top: 10px;
    font-size: 1rem;
  }

  .button {
    min-width: 94px;
    padding-right: 15px;
    padding-left: 15px;
  }

  .section {
    padding: 52px 18px;
  }

  .section-title {
    margin-bottom: 24px;
    font-size: 1.85rem;
  }

  .section-intro,
  .content {
    font-size: 1rem;
  }

  .content {
    text-align: left;
  }

  .abstract-motivation h3,
  .method-title {
    font-size: 1.18rem;
  }

  .result-module {
    padding-top: 22px;
    padding-bottom: 44px;
  }

  .result-title {
    font-size: 1.18rem;
  }

  .demo-tabs {
    display: none;
  }

  .demo-select-label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 0.8rem;
    font-weight: 600;
  }

  .demo-select-label select {
    width: 100%;
    min-height: 44px;
    padding: 8px 12px;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #ffffff;
  }

  .clip-grid {
    grid-template-columns: 1fr;
  }

  .instruction-comparison {
    grid-template-columns: 1fr;
  }

  .instruction-comparison p {
    min-height: 0;
  }

  .citation-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .citation-heading .section-title {
    text-align: center;
  }

  .citation pre {
    font-size: 0.74rem;
  }
}

@media (max-width: 420px) {
  h1 {
    font-size: 1.9rem;
  }

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

  .button {
    min-width: 0;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}