body {
    font-family: 'EB Garamond', serif;
    line-height: 1.6;
    margin: 0;
    padding: 0 20px;
    background-color: #fdfdfd;
    color: #111;
    max-width: 900px;
    margin: auto;
}
h1, h2 {
    font-family: 'Roboto', sans-serif;
    text-align: center;
}
.authors, .affiliations {
    font-size: 1em;
    color: #666;
    text-align: center;
}
.section {
    margin-top: 3em;
}
code.bibtex {
    background: #f5f5f5;
    display: block;
    padding: 10px;
    font-size: 0.9em;
    font-family: monospace;
    white-space: pre-wrap;
}
a {
    color: #0066cc;
    text-decoration: none;
}

.lang-toggle {
    position: fixed;
    top: 100px;
    right:100px;
    background-color: #ffffffdd;
    color: #111;
    border: 1px solid #ccc;
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 0.9em;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    z-index: 1000;
    transition: background 0.2s ease;
    font-family: 'Roboto', sans-serif;
    opacity: 0.8;
}

.figure {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 2em auto;
    max-width: 80%;
  }
  
  .figure img {
    max-width: 100%;
    height: auto;
    border: 1px solid #ddd;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  }
  
  .figure .caption {
    font-size: 0.9em;
    color: #555;
    margin-top: 0.5em;
    text-align: center;
    max-width: 700px;
    font-style: italic;
  }

  .warning {
    background-color: #fff3cd;
    color: #856404;
    border-left: 5px solid #ffc107;
    padding: 1em;
    margin: 1.5em 0;
    border-radius: 4px;
    font-family: 'Roboto', sans-serif;
    font-size: 0.95em;
    line-height: 1.5em;
  }

  .highlight {
    background-color: #e7f3fe;
    color: #084298;
    border-left: 5px solid #2196f3;
    padding: 1em;
    margin: 1.5em 0;
    border-radius: 4px;
    font-family: 'Roboto', sans-serif;
    font-size: 0.95em;
    line-height: 1.5em;
  }
  
  .checklist ul {
    list-style: none;
    padding-left: 0;
  }
  
  .checklist li {
    display: flex;
    align-items: center;
    font-size: 1rem;
  }
  
  .checklist input[type="checkbox"] {
    appearance: none;
    width: 1.1rem;
    height: 1.1rem;
    border: 2px solid #007BFF;
    border-radius: 4px;
    margin-right: 0.6rem;
    position: relative;
    cursor: default;
    background-color: white;
  }

  .footer {
    font-size: 0.9em;
    color: #666;
    text-align: center;
    margin-top: 3em;
    padding-top: 1em;
    border-top: 1px solid #ccc;
  }


  .yt-card {
    max-width: 80%;
    background: #fff;
    padding: 10px;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    text-align: center;
    margin: 2em auto;
    overflow: hidden;
  }
  
  .yt-card iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: none;
    border-radius: 8px;
  }
  
  .yt-card p {
    margin-top: 0.8em;
    font-size: 1rem;
    color: #333;
  }