:root {
  --text: #111;
  --muted: #555;
  --border: #e6e6e6;
  --bg: #fff;
  --soft: #fafafa;
  --btn: #111;
  --btnText: #fff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 18px 40px;
}

.hero {
  padding: 18px 0 8px;
  border-bottom: 1px solid var(--border);
}

.title {
  margin: 0 0 8px;
  font-size: 34px;
  line-height: 1.15;
}

.authors, .affiliations, .venue {
  margin: 6px 0;
  color: var(--muted);
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--soft);
  font-size: 13px;
}

.links {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-block;
  padding: 9px 12px;
  border-radius: 10px;
  background: var(--btn);
  color: var(--btnText);
  text-decoration: none;
  font-size: 14px;
}

.btn-secondary {
  background: #444;
}

.section {
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

.section h2 {
  margin: 0 0 12px;
  font-size: 22px;
}

/* .grid2 {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
  align-items: start;
} */

.figure img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
}

.caption {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.text p, .text ul {
  margin-top: 0;
}

.video-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
}
.video-wrapper iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
}

.bibtex {
  background: var(--soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  overflow-x: auto;
}

.footer {
  padding-top: 14px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 860px) {
  .grid2 { grid-template-columns: 1fr; }
  .title { font-size: 28px; }
}


.grid2 {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* .figure img {
  width: 100%;
  max-width: 900px;
  display: block;
  margin: 0 auto;
} */