:root {
  color-scheme: light;
  --ink: #202632;
  --muted: #606b7a;
  --accent: #215c9e;
  --rule: #e6eaf0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font: 17px/1.75 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }

.paper-content, .site-footer {
  width: calc(100% - 64px);
  max-width: 1200px;
  margin: 0 auto;
}

.paper-content { padding-top: 52px; }
.paper-content > p, .paper-content > ul, .paper-content > ol {
  max-width: 960px;
  margin: 16px auto;
}

h1, h2, h3 {
  color: #182332;
  line-height: 1.3;
  letter-spacing: -0.025em;
}

h2 { margin: 60px 0 20px; font-size: 29px; }
h3 { margin: 38px 0 20px; font-size: 23px; }
.paper-content > h2, .paper-content > h3 {
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}
li + li { margin-top: 10px; }

/* The opening README block is: project name, paper title, authors, affiliations. */
.paper-content > h1:first-child {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 48px;
  font-weight: 750;
  letter-spacing: -0.045em;
  text-align: center;
}

.paper-content > h1:first-child + h2 {
  max-width: 1040px;
  margin: 0 auto 24px;
  font-size: clamp(27px, 3vw, 36px);
  font-weight: 650;
  text-align: center;
  text-wrap: balance;
}

.paper-content > h1:first-child + h2 + p {
  margin-top: 0;
  margin-bottom: 6px;
  font-size: 18px;
  text-align: center;
}

.paper-content > h1:first-child + h2 + p + p {
  margin-top: 0;
  color: var(--muted);
  font-size: 15px;
  text-align: center;
}

.project-links { margin: 22px auto 0; text-align: center; }
.project-links a { font-weight: 600; }

.paper-content > .project-links + p {
  max-width: 900px;
  margin-top: 26px;
  margin-bottom: 30px;
  font-size: 18px;
  text-align: center;
}

/* Keep the copyable citation within the text column on desktop and mobile. */
.paper-content > div.highlighter-rouge {
  max-width: 960px;
  margin: 20px auto;
}
pre {
  margin: 0;
  padding: 18px 20px;
  overflow-x: auto;
  background: #f6f8fa;
  border: 1px solid var(--rule);
  border-radius: 6px;
  font: 13px/1.65 ui-monospace, Consolas, monospace;
}

/* Full-width figures; retain explicit widths such as Fig.1's 480px. */
.paper-content > p:has(img) { max-width: none; margin: 26px 0 16px; }
.paper-content img { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.paper-content a:has(img) { display: block; }
.paper-content a img { cursor: zoom-in; }

.paper-content > p:has(img[src$="-rd.png"]) + p,
.paper-content > p:has(img[src$="-comparison.png"]) + p {
  margin-top: 10px;
  margin-bottom: 32px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.site-footer {
  margin-top: 44px;
  margin-bottom: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  font-size: 14px;
  text-align: center;
}

.paper-content .demo-gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; justify-content: center; align-items: start; }
.paper-content .demo-gallery.memory-gallery { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.paper-content .demo-gallery .interactive-preview { flex: 1; min-width: 0; max-width: 380px; margin: 0; text-align: center; text-decoration: none; font-size: 15px; }
.paper-content .interactive-preview img { cursor: pointer; border: 1px solid var(--rule); border-radius: 12px; }
.paper-content .interactive-preview video { display: block; width: 100%; height: auto; border: 1px solid var(--rule); border-radius: 12px; pointer-events: none; }
.paper-content .interactive-preview video[hidden], .paper-content .interactive-preview img[hidden] { display: none; }
.interactive-demo { margin: 16px auto 32px; }
.demo-actions { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 20px; margin: 16px 0; }
.demo-actions button { font: inherit; font-size: 15px; background: var(--accent); color: white; border: 0; padding: 10px 20px; border-radius: 8px; cursor: pointer; }
.demo-actions a { font-size: 14px; }
.demo-actions button:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.interactive-demo iframe { display: block; width: 100%; height: 850px; border: 0; }
.paper-content > p[hidden] { display: none; }
@media (max-width: 600px) {
  .paper-content .demo-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .paper-content .demo-gallery.memory-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .paper-content .demo-gallery .interactive-preview { font-size: 12px; }
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 10;
  padding: 8px 16px;
  background: #fff;
  border: 2px solid var(--accent);
}
.skip-link:focus { top: 12px; }

@media (max-width: 600px) {
  body { font-size: 16px; line-height: 1.7; }
  .paper-content, .site-footer { width: calc(100% - 32px); }
  .paper-content { padding-top: 30px; }
  .paper-content > h1:first-child { font-size: 39px; }
  .paper-content > h1:first-child + h2 { font-size: 26px; }
  .paper-content > h1:first-child + h2 + p { font-size: 16px; }
  .paper-content > h1:first-child + h2 + p + p { font-size: 14px; }
  .paper-content > .project-links + p { font-size: 16px; }
  h2 { margin-top: 42px; font-size: 25px; }
  h3 { margin-top: 30px; font-size: 21px; }
  .paper-content > p:has(img) { margin-top: 20px; }
}