:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --accent: #5e60ce;
  --accent-light: #e8e8f5;
  --border: #e5e7eb;
  --code-bg: #f3f4f6;
}

html, body {
  font-family: 'Inter', sans-serif;
  color: var(--text-primary);
  background: var(--bg-primary);
  line-height: 1.75;
  font-size: 17px;
}

.container.narrow {
  max-width: 920px;
}

/* Hero */
.hero-section {
  padding: 5rem 1.5rem 2rem;
  text-align: center;
}

.venue-badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 3px 14px;
  border-radius: 4px;
  margin-bottom: 1.2rem;
  letter-spacing: 0.02em;
}

.paper-title {
  font-family: 'Noto Sans', sans-serif;
  font-weight: 700;
  font-size: 2.2rem;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.author-list {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 0.3rem;
}

.author-list a {
  color: var(--accent);
  text-decoration: none;
}

.author-list a:hover {
  text-decoration: underline;
}

.affiliation-list {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  line-height: 1.6;
}

.author-note {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

.email-list {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.author-list sup {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.7em;
}

.link-buttons {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.link-buttons .button {
  background: var(--bg-primary);
  border: 1.5px solid var(--border);
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.link-buttons .button:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(94, 96, 206, 0.12);
}

.link-buttons .button .icon {
  color: var(--accent);
}

/* Teaser */
.teaser-section {
  padding-top: 0;
}

.teaser-figure {
  text-align: center;
}

.teaser-figure img {
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.teaser-figure figcaption {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Sections */
.section {
  padding: 3rem 1.5rem;
}

.alt-bg {
  background: var(--bg-secondary);
}

.section-heading {
  font-family: 'Noto Sans', sans-serif;
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--text-primary);
  border-bottom: 2.5px solid var(--accent);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}

/* Markdown content */
#abstract-md,
#method-md,
#results-md,
#analysis-md,
#citation-md {
  font-size: 1rem;
  color: var(--text-primary);
}

#abstract-md p,
#method-md p,
#results-md p,
#analysis-md p {
  margin-bottom: 1rem;
}

#abstract-md strong,
#method-md strong,
#results-md strong,
#analysis-md strong {
  font-weight: 700;
  color: #0d0d1a;
}

#method-md h3,
#results-md h3,
#analysis-md h3 {
  font-family: 'Noto Sans', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--accent);
  margin-top: 2rem;
  margin-bottom: 0.8rem;
}

#method-md img,
#results-md img,
#analysis-md img {
  display: block;
  max-width: 100%;
  margin: 1.5rem auto;
  border-radius: 6px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

#method-md p:has(> em:only-child),
#results-md p:has(> em:only-child),
#analysis-md p:has(> em:only-child) {
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: -0.8rem;
  margin-bottom: 1.5rem;
}

#results-md ul,
#method-md ul,
#analysis-md ul {
  margin-left: 1.2rem;
  margin-bottom: 1rem;
}

#results-md li,
#method-md li,
#analysis-md li {
  margin-bottom: 0.4rem;
}

/* Tables */
#results-md table,
#analysis-md table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.88rem;
  overflow-x: auto;
  display: block;
}

#results-md th,
#results-md td,
#analysis-md th,
#analysis-md td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  text-align: center;
  white-space: nowrap;
}

#results-md th,
#analysis-md th {
  background: var(--accent-light);
  font-weight: 600;
}

#results-md tr:nth-child(even),
#analysis-md tr:nth-child(even) {
  background: #f7f7fb;
}

/* Citation */
.citation-block {
  position: relative;
}

.citation-block pre {
  background: var(--code-bg);
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
  border: 1px solid var(--border);
}

.citation-block code {
  background: transparent;
  color: var(--text-primary);
  font-size: 0.85rem;
}

.copy-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 4px 12px;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s;
}

.copy-btn:hover {
  opacity: 0.85;
}

/* Footer */
.footer {
  padding: 2rem 1.5rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.footer p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Responsive */
@media screen and (max-width: 768px) {
  .paper-title {
    font-size: 1.6rem;
  }

  .section-heading {
    font-size: 1.35rem;
  }

  .hero-section {
    padding: 3rem 1rem 1.5rem;
  }

  .section {
    padding: 2rem 1rem;
  }

  .link-buttons .button {
    font-size: 0.85rem;
  }
}