:root {
  --accent: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --bg: #ffffff;
}

body {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 28px;
}

.site-title {
  font-size: 1.6rem;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.site-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.site-nav a {
  text-decoration: none;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.site-nav a:hover {
  border-color: var(--accent);
}

.hero {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 24px;
  align-items: center;
  margin: 24px 0 12px;
}

.hero img {
  width: 190px;
  height: 190px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--border);
}

.intro {
  font-size: 1.05rem;
  margin: 0 0 10px;
}

.subtle {
  color: var(--muted);
  margin: 0;
}

h2 {
  margin-top: 32px;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #f3f4f6;
    --muted: #cbd5f5;
    --border: #2b2f3a;
    --bg: #0b0d10;
  }

  body {
    background: var(--bg);
  }

  .site-title,
  .site-nav a,
  .paper-title {
    color: var(--accent);
  }

  h2,
  .paper-meta,
  .subtle {
    color: var(--muted);
  }
}

.paper-list {
  display: grid;
  gap: 20px;
  margin-top: 20px;
}

.paper-item {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.paper-title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  color: var(--accent);
}

.paper-title a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.paper-title a:hover {
  border-bottom-color: var(--accent);
}

.paper-meta {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.paper-authors {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.85rem;
}

.paper-authors strong {
  color: var(--accent);
  font-weight: 600;
}

.paper-blurb {
  margin: 0;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 4px;
  margin-left: 8px;
  background: var(--accent);
  color: var(--bg);
}

@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero img {
    width: 160px;
    height: 160px;
  }

  .paper-item {
    grid-template-columns: 1fr;
  }

  .paper-item img {
    width: 100%;
    height: auto;
  }
}