:root {
  --bg: #fbfbfa;
  --fg: #1d1f24;
  --muted: #5f6470;
  --grid: #e3e4e8;
  --card: #ffffff;
  --border: #dcdde2;
  --accent: #1f5fa8;
  --accent2: #c2561a;
  --code: #f2f2f0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171b;
    --fg: #e8e9ec;
    --muted: #a3a8b3;
    --grid: #2c2f36;
    --card: #1c1f24;
    --border: #30343c;
    --accent: #6fa8ec;
    --accent2: #f0965f;
    --code: #1f2228;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main, .hero, footer { max-width: 980px; margin: 0 auto; padding: 0 16px; }
a { color: var(--accent); }
h1 { font-size: clamp(1.6rem, 4.2vw, 2.5rem); line-height: 1.2; margin: 0.2em 0 0.4em; }
h2 { font-size: 1.35rem; margin: 2.2em 0 0.5em; }

.hero { text-align: center; padding-top: 3rem; }
.venue { margin: 0; color: var(--accent); font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.85rem; }
.authors { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.25em 1.2em; margin: 0.4em 0 0; font-size: 1.05rem; }
.affiliations { color: var(--muted); font-size: 0.9rem; margin: 0.3em 0 1.2em; }
.links { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem; }
.button {
  display: inline-block; padding: 0.45em 1.1em; border-radius: 999px;
  background: var(--fg); color: var(--bg); text-decoration: none; font-weight: 500; font-size: 0.95rem;
}
.button:hover { opacity: 0.85; }
.button.accent { background: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) { .button.accent { color: var(--bg); } }
.button.ghost { background: transparent; color: var(--fg); border: 1px solid var(--border); }
.button.disabled { background: var(--grid); color: var(--muted); cursor: default; }

.teaser { margin: 2.5rem 0 0; }
.teaser img { width: 100%; height: auto; border-radius: 8px; background: #fff; }
figcaption { color: var(--muted); font-size: 0.92rem; margin-top: 0.5em; }
.placeholder { color: var(--muted); font-style: italic; }

.lay-summary p { background: var(--card); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 8px; padding: 1rem 1.2rem; margin: 0; }

.contributions { padding-left: 1.2em; }
.contributions li { margin-bottom: 0.7em; }
.result { border-top: 1px solid var(--border); }
.result figure { margin: 1.2rem 0 0; }
.result img { width: 100%; height: auto; border-radius: 8px; background: #fff; }
.keynums { display: flex; flex-wrap: wrap; gap: 0.8rem; margin: 1rem 0; padding: 0; list-style: none; }
.keynums li { flex: 1 1 140px; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 0.6rem 0.9rem; }
.keynums b { display: block; font-size: 1.5rem; font-variant-numeric: tabular-nums; color: var(--accent); }
.keynums span { color: var(--muted); font-size: 0.88rem; line-height: 1.35; display: block; }

.demo { border-top: 1px solid var(--border); }
.controls {
  display: flex; flex-wrap: wrap; gap: 0.6rem 1.4rem; align-items: center;
  margin: 1rem 0; padding: 0.7rem 1rem; background: var(--card);
  border: 1px solid var(--border); border-radius: 10px; font-size: 0.95rem;
}
.controls label { display: inline-flex; align-items: center; gap: 0.5em; }
.controls output { min-width: 3.5ch; font-variant-numeric: tabular-nums; color: var(--muted); }
input[type="range"] { width: 130px; accent-color: var(--accent); }
select { font: inherit; padding: 0.15em 0.3em; border-radius: 6px; border: 1px solid var(--border); background: var(--bg); color: var(--fg); }

.panels { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.4rem; align-items: start; }
.panels.wide { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
.panels figure { margin: 0; }
canvas { display: block; width: 100%; }
canvas.map { aspect-ratio: 1; border-radius: 8px; border: 1px solid var(--border); }
canvas.chart { height: 230px; margin-top: 0.6rem; }
canvas.chart.large { height: 360px; margin-top: 0; }

dl { display: grid; grid-template-columns: auto 1fr; gap: 0.15em 1em; margin: 0; font-size: 0.95rem; }
dt { color: var(--muted); }
dd { margin: 0; font-variant-numeric: tabular-nums; text-align: right; }
.status { color: var(--accent2); font-size: 0.9rem; min-height: 1em; }
.demo:not(.ready) .panels { opacity: 0.4; }

.bibtex { position: relative; }
pre { background: var(--code); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; overflow-x: auto; font-size: 0.85rem; line-height: 1.45; }
button.copy {
  position: absolute; top: 0.5rem; right: 0.5rem; font: inherit; font-size: 0.8rem;
  padding: 0.2em 0.8em; border-radius: 6px; border: 1px solid var(--border); background: var(--card); color: var(--fg); cursor: pointer;
}
footer { color: var(--muted); font-size: 0.9rem; margin-top: 3rem; padding-bottom: 3rem; border-top: 1px solid var(--border); padding-top: 1rem; }

@media (max-width: 720px) {
  body { font-size: 16px; }
  .panels, .panels.wide { grid-template-columns: minmax(0, 1fr); }
  input[type="range"] { width: 110px; }
  .bibtex pre { padding-top: 2.6rem; }
}