body {
      background-color: LightSalmon;
      font-family: sans-serif;
      line-height: 1.5;
      max-width: 1500px;
      margin: auto;
      padding: 2rem;
    }

    h1 {
      font-size: 1.8em;
    }

    h4 {
      margin-top: 1.5rem;
    }

    a {
      color: darkblue;
      text-decoration: none;
    }

    a:hover {
      text-decoration: underline;
    }

    .seminar-box {
      border: 2px solid black;
      padding: 20px;
      margin: 1.5rem auto;
      max-width: 900px;
      background-color: LightSalmon;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
      border-radius: 8px;
    }

    .talk {
      margin-bottom: 1.2rem;
    }

    details {
      margin-bottom: 0.3rem;
    }

    summary {
      cursor: pointer;
      font-weight: bold;
      list-style: none;
    }

    summary::-webkit-details-marker {
      display: none;
    }

    summary::before {
      content: "\25B6";
      display: inline-block;
      margin-right: 0.4rem;
      font-size: 0.8em;
      transition: transform 0.2s ease;
    }

    details[open] summary::before {
      transform: rotate(90deg);
    }

    .abstract {
      margin-top: 0.5rem;
      padding-left: 1rem;
      border-left: 3px solid rgba(0,0,0,0.6);
      background-color: #F4CBB3;
      border-radius: 6px;
    }

    .talk-meta {
      margin-left: 1.3rem;
      font-size: 0.95em;
    }

    .last-updated {
      text-align: right;
      font-size: 1.05em;
      color: black;
      margin-top: 1.5rem;
    }