:root {
  --pink: #f0529c;
  --pink-light: #f5a8d0;
  --pink-dark: #c03a7a;
  --bg: #ffffff;
  --surface: #fafafa;
  --border: #e8e8e8;
  --text: #1a1a1a;
  --text-secondary: #555;
  --max-width: 960px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* ── TOP STRIPE ── */
.top-stripe {
  background: var(--pink);
  height: 4px;
}

/* ── HEADER ── */
header {
  background: var(--bg);
  padding: 48px 24px 32px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.title-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.logo {
  height: 120px;
  flex-shrink: 0;
}

h1 {
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  text-align: left;
  max-width: 700px;
}

h1 .highlight { color: var(--pink); }

/* ── AUTHORS ── */
.authors-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 24px 0;
  text-align: center;
}

.authors-block {
  margin-top: 16px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.9;
}

.authors-row {
  display: block;
  margin-bottom: 2px;
}

.authors-block .costar {
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}
.authors-block .author-name { white-space: nowrap; }
.authors-block sup { font-size: 0.65em; }
.authors-block .heart { color: var(--pink); }

.affiliations {
  margin-top: 8px;
  font-size: 0.8rem;
  color: #888;
}

.contrib-note {
  margin-top: 6px;
  font-size: 0.78rem;
  color: #aaa;
  font-style: italic;
}

/* ── LINKS ── */
.links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 24px 24px 0;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.15s, transform 0.1s;
  border: 1.5px solid transparent;
}
.link-btn:hover { opacity: 0.85; transform: translateY(-1px); }

.link-btn.primary   { background: var(--pink); color: white; }
.link-btn.secondary { background: var(--text); color: white; }
.link-btn.outline   { border-color: var(--border); color: var(--text); background: var(--bg); }

/* ── MAIN ── */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 80px;
}

section { margin-top: 60px; }

h2 {
  font-size: 1.45rem;
  font-weight: 800;
  border-left: 4px solid var(--pink);
  padding-left: 12px;
  margin-bottom: 20px;
}

h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 24px 0 10px;
  color: var(--pink-dark);
}

p { margin-bottom: 12px; color: var(--text-secondary); }
p strong { color: var(--text); }

/* ── ABSTRACT ── */
.abstract-box {
  background: #fff8fb;
  border: 1.5px solid var(--pink-light);
  border-radius: 12px;
  padding: 28px 32px;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text);
}
.abstract-box p { color: var(--text); margin: 0 0 12px; }
.abstract-box p:last-child { margin-bottom: 0; }

/* ── VIDEO PLACEHOLDER ── */
.video-placeholder {
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 60px 24px;
  text-align: center;
  color: #bbb;
}
.video-placeholder i {
  font-size: 3rem;
  display: block;
  margin-bottom: 12px;
}
.video-placeholder p {
  margin: 0;
  font-size: 0.95rem;
  color: #bbb;
}

/* ── VIDEO EMBED ── */
.video-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ── EMBED WRAP ── */
.embed-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  margin-top: 12px;
  margin-bottom: 32px;
}
.embed-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.fullscreen-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 10;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 1rem;
  text-decoration: none;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
  backdrop-filter: blur(4px);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}
.fullscreen-btn:hover {
  background: var(--pink);
  color: white;
  border-color: var(--pink);
  box-shadow: 0 2px 8px rgba(240, 82, 156, 0.25);
}

/* ── FIGURES ── */
figure {
  margin: 0;
  text-align: center;
}

figure img, figure video {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
}

figcaption {
  margin-top: 10px;
  font-size: 0.82rem;
  color: #888;
  line-height: 1.5;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
figcaption strong { color: var(--text); }

.fig-hero { margin-bottom: 8px; }

/* ── STATS STRIP ── */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 12px;
  text-align: center;
}
.stat-card .num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--pink);
}
.stat-card .lbl {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ── APPLICATION GRID ── */
.app-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.app-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.15s, box-shadow 0.15s;
}
.app-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.app-card img, .app-card video {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--border);
}

.app-card-video {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-bottom: 1px solid var(--border);
}
.app-card-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.app-card-body {
  padding: 16px;
}

.app-card-body h3 {
  margin: 0 0 6px;
  font-size: 0.95rem;
  color: var(--text);
}

.app-card-body p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Full-width app cards */
.app-card.full-width {
  grid-column: 1 / -1;
}
.app-card.full-width img {
  height: auto;
  max-height: 400px;
  object-fit: contain;
  background: white;
}

/* ── DEMO GALLERY ── */
.demo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.demo-item {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.demo-item img {
  width: 100%;
  height: auto;
  display: block;
}

.demo-item figcaption {
  padding: 8px 12px;
  font-size: 0.78rem;
  color: #888;
  text-align: center;
  margin: 0;
}

/* ── CITATION ── */
.citation-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 40px 24px;
}

.citation-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.citation-inner h2 {
  border-left: 4px solid var(--pink);
  padding-left: 12px;
}

.bibtex {
  background: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  font-size: 0.8rem;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  line-height: 1.6;
  color: var(--text);
  overflow-x: auto;
  white-space: pre;
  margin-bottom: 10px;
}

.copy-btn {
  background: none;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  padding: 5px 14px;
  font-size: 0.8rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.copy-btn:hover { background: var(--pink); border-color: var(--pink); color: white; }

.coming-soon {
  background: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ── FOOTER ── */
footer {
  text-align: center;
  padding: 32px 24px;
  font-size: 0.8rem;
  color: #bbb;
  border-top: 1px solid var(--border);
}
footer a { color: var(--pink); text-decoration: none; }

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  h1 { font-size: 1.5rem; text-align: center; }
  .logo { width: auto; height: 80px; }
  .app-grid { grid-template-columns: 1fr; }
  .app-card img { height: 160px; }
}