:root {
  --bg: #fafaf8;
  --bg-alt: #f0ede8;
  --text: #2c2c2c;
  --text-muted: #6b6b6b;
  --accent: #3b6e8c;
  --accent-hover: #2a5470;
  --border: #dedad4;
  --max-width: 760px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 15.5px;
  line-height: 1.65;
  border-top: 3px solid var(--accent);
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* ── Hero Header ── */
.hero {
  background: linear-gradient(160deg, #ebe5dc 0%, var(--bg) 100%);
  text-align: center;
  padding: 64px 24px 52px;
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 8px;
}

.hero-title {
  color: var(--text-muted);
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  margin-bottom: 28px;
}

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

.hero-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.55);
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.hero-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: white;
  text-decoration: none;
}

/* ── Page Content ── */
.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 52px 24px 80px;
}

/* ── Sections ── */
section {
  margin-bottom: 52px;
}

section h2 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

section h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── About ── */
.about p {
  margin-bottom: 10px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.tag {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── News ── */
.news-list {
  list-style: none;
}

.news-list li {
  display: flex;
  gap: 20px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}

.news-date {
  flex-shrink: 0;
  width: 76px;
  color: var(--text-muted);
  font-size: 0.8rem;
  padding-top: 2px;
  font-variant-numeric: tabular-nums;
}

/* ── Publications ── */
.pub-list {
  list-style: none;
}

.pub-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 14px;
  border-radius: 6px;
  margin-bottom: 2px;
  transition: background 0.12s;
}

.pub-item:hover {
  background: var(--bg-alt);
}

.pub-content {
  flex: 1;
  min-width: 0;
}

/* ── Figure thumbnail ── */
.pub-figure {
  flex-shrink: 0;
  position: relative;
  width: 112px;
}

.pub-figure img {
  width: 112px;
  height: 76px;
  object-fit: cover;
  border-radius: 5px;
  border: 1px solid var(--border);
  display: block;
  cursor: zoom-in;
}

.pub-figure-zoom {
  display: none;
  position: absolute;
  left: 124px;
  top: 0;
  z-index: 100;
  background: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  width: 320px;
  pointer-events: none;
}

.pub-figure:hover .pub-figure-zoom {
  display: block;
}

.pub-figure-zoom img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: none;
}

.pub-title {
  font-weight: 500;
  margin-bottom: 4px;
  line-height: 1.4;
}

.pub-authors {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.pub-authors strong {
  color: var(--text);
  font-weight: 600;
}

.pub-venue {
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.venue-name {
  font-style: italic;
  color: var(--text-muted);
}

.venue-year {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.pub-badges {
  display: inline-flex;
  gap: 6px;
  margin-top: 6px;
}

.badge {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.badge-conf {
  border-color: #3b6e8c44;
  color: var(--accent);
  background: #3b6e8c0e;
}

.badge-arxiv {
  border-color: #a0733044;
  color: #7a5520;
  background: #a073300e;
}

.badge-workshop {
  border-color: #5a8a3a44;
  color: #3e6620;
  background: #5a8a3a0e;
}

/* ── Author expand/collapse ── */
.authors-extra {
  display: none;
}
.pub-authors.authors-expanded .authors-extra {
  display: inline;
}
.authors-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 1px 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  margin-left: 3px;
  font-family: inherit;
  vertical-align: middle;
}
.authors-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ── Publication summary ── */
.pub-summary {
  font-size: 0.855rem;
  color: var(--text-muted);
  margin-top: 6px;
  line-height: 1.55;
}

/* ── Year divider ── */
.pub-year-group {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  padding: 10px 14px 4px;
  margin-top: 4px;
}

/* ── Footer ── */
footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* ── Responsive ── */
@media (max-width: 520px) {
  .hero h1 {
    font-size: 1.9rem;
  }
  .hero-links {
    gap: 6px;
  }
}