:root {
  --bg: #0b0c10;
  --fg: #e6e6e6;
  --muted: #b5b5b5;
  --accent: #5ab1ff;
  --card: #13151a;
  --border: #262a33;
}
* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  height: 100%;
}
body {
  min-height: 100svh; /* use 100vh if you prefer */
  display: flex;
  flex-direction: column;
}
main {
  flex: 1 0 auto;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1rem;
  
}

.image-container {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.container img {
  max-width: 300px;
  height: auto;
  flex-shrink: 0;
}
.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(6px);
  background: rgba(11, 12, 16, 0.7);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.3px;
}
.nav a {
  margin-left: 1rem;
  padding: 0.4rem 0.6rem;
  border-radius: 999px;
}
.nav a:hover {
  background: var(--card);
  text-decoration: none;
}
.hero {
  background: var(--card);
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-top: 1rem;
}
h1,
h2 {
  line-height: 1.2;
}
.math-display {
  overflow-x: auto;
  padding: 0.25rem 0;
}
.paper-list {
  list-style: decimal inside;
  padding-left: 0;
}
.paper-links a {
  margin-right: 0.5rem;
}
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}
.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  color: var(--muted);
}
@media (max-width: 560px) {
  .nav a {
    margin-left: 0.5rem;
  }
}