body {
  font-family: 'Noto Sans', sans-serif;
  background-color: #fff;
  color: #363636;
}

/* ─── Hero ─── */
.hero.is-white {
  background: #fff;
}

.publication-title {
  font-family: 'Google Sans', 'Noto Sans', sans-serif;
  font-weight: 700;
  line-height: 1.3;
}

/* ─── Author chips ─── */
.author-block a {
  color: #3273dc;
  text-decoration: none;
}
.author-block a:hover { text-decoration: underline; }
.author-block::after { content: ",\00a0"; }
.author-block:last-child::after { content: ""; }

/* ─── Link buttons ─── */
.publication-links .button {
  border-radius: 20px;
  font-weight: 600;
  transition: transform 0.15s, box-shadow 0.15s;
  margin: 4px;
}
.publication-links .button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.18);
}

/* ─── Section titles ─── */
.section-title {
  font-family: 'Google Sans', 'Noto Sans', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 4px;
  background: linear-gradient(90deg, #0f3460, #4a90d9);
  border-radius: 2px;
  margin-top: 8px;
}

/* ─── TL;DR block ─── */
.tldr-block {
  margin-top: 2rem;
  padding: 1.8rem 2rem 1rem;
  background: #f7f9fc;
  border-radius: 14px;
  border: 1px solid #e4eaf4;
}

.tldr-line {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #363636;
  margin-bottom: 1.3rem;
}

.tldr-badge {
  display: inline-block;
  background: #1a1a2e;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: 6px;
  padding: 3px 10px;
  margin-right: 10px;
  vertical-align: middle;
  position: relative;
  top: -1px;
}


/* ─── Abstract ─── */
.abstract-box {
  background: #f7f9fc;
  border-left: 4px solid #0f3460;
  border-radius: 0 8px 8px 0;
  padding: 2rem 2.5rem;
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ─── Contribution cards ─── */
.contribution-card {
  border: 1px solid #e8edf5;
  border-radius: 12px;
  padding: 1.5rem;
  height: 100%;
  transition: box-shadow 0.2s, transform 0.2s;
  background: #fff;
}
.contribution-card:hover {
  box-shadow: 0 8px 24px rgba(15,52,96,0.12);
  transform: translateY(-3px);
}
.contribution-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: #0f3460;
  opacity: 0.15;
  line-height: 1;
  margin-bottom: 0.5rem;
}
.contribution-card h3 {
  font-family: 'Google Sans', 'Noto Sans', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: #1a1a2e;
  margin-bottom: 0.5rem;
}

/* ─── Figure boxes ─── */
.figure-box {
  background: #f7f9fc;
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}
.figure-box img {
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  width: 100%;
}
.figure-caption {
  font-size: 0.92rem;
  color: #555;
  margin-top: 1rem;
  line-height: 1.6;
  text-align: left;
}
.figure-caption strong { color: #1a1a2e; }

/* ─── Results table ─── */
.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.results-table th {
  background: #1a1a2e;
  color: #fff;
  padding: 0.7rem 1rem;
  text-align: center;
  font-weight: 600;
}
.results-table th:first-child { text-align: left; border-radius: 8px 0 0 0; }
.results-table th:last-child { border-radius: 0 8px 0 0; }
.results-table td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid #eef0f4;
  text-align: center;
}
.results-table td:first-child { text-align: left; font-weight: 500; }
.results-table tr:last-child td { border-bottom: none; font-weight: 700; color: #0f3460; background: #eef4ff; }
.results-table tr:hover td { background: #f5f8ff; }
.results-table .ours td { background: #eef4ff; font-weight: 700; color: #0f3460; }

/* ─── Citation block ─── */
.citation-box {
  background: #1a1a2e;
  border-radius: 10px;
  padding: 1.5rem 2rem;
  color: #e8f0ff;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.7;
  overflow-x: auto;
  position: relative;
}
.copy-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  border-radius: 6px;
  padding: 4px 12px;
  cursor: pointer;
  font-size: 0.8rem;
  transition: background 0.2s;
}
.copy-btn:hover { background: rgba(255,255,255,0.25); }

/* ─── Footer ─── */
footer.footer {
  background: #f7f9fc;
  padding: 2rem;
  border-top: 1px solid #e8edf5;
}

/* ─── Problem Formulation diagram ─── */
.pf-compare {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.pf-col {
  flex: 1;
  min-width: 260px;
  background: #f7f9fc;
  border: 1px solid #e4eaf4;
  border-radius: 14px;
  padding: 1.4rem 1.2rem 1rem;
}
.pf-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 1rem;
  text-align: center;
}
.pf-label-gray { color: #888; }
.pf-label-blue { color: #0f3460; }

.pf-timeline {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-bottom: 0.9rem;
  min-height: 64px;
}
.pf-shot {
  flex: 1;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: #1a1a2e;
  padding: 6px 4px;
  gap: 4px;
  text-align: center;
}
.pf-boundary {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 44px;
  flex-shrink: 0;
  font-size: 1.4rem;
  font-weight: 300;
  gap: 3px;
}
.pf-boundary-gray { color: #aaa; }
.pf-boundary-blue { color: #0f3460; }
.pf-boundary-red  { color: #c0392b; }

.pf-intra-tag {
  font-size: 0.68rem;
  background: #0f7c5a;
  color: #fff;
  border-radius: 4px;
  padding: 1px 5px;
  font-weight: 600;
  white-space: nowrap;
}
.pf-inter-tag {
  font-size: 0.65rem;
  background: #5b35a0;
  color: #fff;
  border-radius: 4px;
  padding: 1px 5px;
  font-weight: 600;
  white-space: nowrap;
  text-align: center;
}
.pf-inter-red { background: #c0392b; }

.pf-output-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
}
.pf-out-tag {
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: 20px;
  padding: 3px 12px;
}
.pf-out-gray   { background: #e0e0e0; color: #555; }
.pf-out-blue   { background: #dce8ff; color: #0f3460; }
.pf-out-teal   { background: #d0f0e4; color: #0f7c5a; }
.pf-out-purple { background: #ede0ff; color: #5b35a0; }

.pf-arrow {
  font-size: 2rem;
  color: #ccc;
  flex-shrink: 0;
}

.pf-cats {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.pf-cat-col {
  flex: 1;
  min-width: 240px;
  background: #f7f9fc;
  border: 1px solid #e4eaf4;
  border-radius: 12px;
  padding: 1rem 1.2rem;
}
.pf-cat-header {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid;
  display: flex;
  align-items: center;
}
.pf-cat-count {
  margin-left: auto;
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.7;
}
.pf-cat-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.pf-pill {
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 20px;
  padding: 3px 12px;
}
.pf-pill-teal   { background: #d0f0e4; color: #0f7c5a; }
.pf-pill-purple { background: #ede0ff; color: #5b35a0; }

/* ─── Method section pills ─── */
.method-tag {
  display: inline-block;
  background: linear-gradient(135deg, #0f3460, #4a90d9);
  color: #fff;
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  margin: 2px;
}

/* ─── Stats bar ─── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2rem 0;
}
.stat-item {
  background: linear-gradient(135deg, #0f3460, #4a90d9);
  border-radius: 12px;
  padding: 1.5rem 1rem;
  text-align: center;
  color: #fff;
}
.stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
}
.stat-label {
  font-size: 0.8rem;
  opacity: 0.9;
  margin-top: 6px;
  line-height: 1.3;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(1, 1fr); }
  .section-title { font-size: 1.5rem; }
}