/* 全体の基本設定 */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
    color: #333;
  }

  .container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
    overflow: hidden;
  }

  /* ヘッダー */
  header {
    background: #35424a;
    color: #ffffff;
    padding: 20px 0;
    border-bottom: #e8491d 3px solid;
  }

  header h1 {
    float: left;
    margin: 0 20px;
  }

  header nav {
    float: right;
    margin: 10px 20px 0 0;
  }

  header nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  header nav ul li {
    display: inline;
    margin-left: 20px;
  }

  header nav ul li a {
    color: #ffffff;
    text-decoration: none;
    font-weight: bold;
  }

  header nav ul li a:hover {
    color: #e8491d;
  }

  /* メインコンテンツ */
  main {
    padding: 20px 0;
    background: #ffffff;
  }

  section {
    padding: 20px 0;
  }

  /* プロジェクト一覧 */
  .project-list {
    list-style: none;
    padding: 0;
  }

  .project-list li {
    background: #e2e2e2;
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 4px;
  }

  /* ダウンロードボタン */
  .download-btn {
    display: inline-block;
    background: #e8491d;
    color: #ffffff;
    padding: 10px 15px;
    text-decoration: none;
    border-radius: 4px;
    margin-top: 10px;
  }

  .download-btn:hover {
    background: #cf3e15;
  }

  /* フッター */
  footer {
    background: #35424a;
    color: #ffffff;
    text-align: center;
    padding: 20px 0;
    margin-top: 20px;
  }

  /* 追加内容用の最小限のスタイル */
  .eyebrow {
    display: none;
  }

  .page-hero {
    padding-bottom: 10px;
  }

  .page-hero h1 {
    margin-bottom: 8px;
  }

  .page-hero p {
    margin-top: 0;
  }

  .section-heading {
    margin-bottom: 15px;
  }

  .section-heading h2 {
    margin-bottom: 5px;
  }

  .name-en,
  .role,
  .conference-name,
  .project-type {
    color: #666666;
  }

  .profile-summary {
    max-width: 900px;
  }

  .basic-profile,
  .detail-list {
    max-width: 950px;
    margin: 20px 0;
    border-top: 1px solid #bbbbbb;
    border-left: 1px solid #bbbbbb;
  }

  .basic-profile > div,
  .detail-list > div {
    display: grid;
    grid-template-columns: 160px 1fr;
  }

  .basic-profile dt,
  .basic-profile dd,
  .detail-list dt,
  .detail-list dd {
    margin: 0;
    padding: 8px 10px;
    border-right: 1px solid #bbbbbb;
    border-bottom: 1px solid #bbbbbb;
  }

  .basic-profile dt,
  .detail-list dt {
    font-weight: bold;
  }

  .account-links {
    margin-top: 15px;
  }

  .account-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-right: 18px;
  }

  .research-box,
  .timeline-item,
  .presentation-card {
    background: #e2e2e2;
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 4px;
  }

  .presentation-date time,
  .presentation-date span {
    display: block;
  }

  .timeline-meta {
    margin-bottom: 8px;
  }

  .status-label {
    font-weight: bold;
  }

  .tech-line,
  .project-note {
    border-top: 1px solid #bbbbbb;
    padding-top: 10px;
  }

  .presentation-card {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 15px;
  }

  .table-wrap {
    overflow-x: auto;
    margin-bottom: 25px;
  }

  table {
    width: 100%;
    min-width: 650px;
    border-collapse: collapse;
  }

  th,
  td {
    padding: 8px 10px;
    border: 1px solid #bbbbbb;
    text-align: left;
  }

  th {
    background: #e2e2e2;
  }

  /* 追加したプロジェクトも元のリスト項目と同じ見た目にする */
  .project-stack {
    display: block;
  }

  .project-card {
    background: #e2e2e2;
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 4px;
  }

  .project-header {
    display: block;
  }

  .project-header h2 {
    margin: 0 0 8px;
    font-size: 1.17em;
  }

  .project-type {
    margin: 0 0 3px;
    font-size: 0.9em;
  }

  .project-links {
    margin-bottom: 10px;
  }

  .button {
    margin-right: 12px;
  }

  .tag-list {
    margin: 8px 0;
    padding: 0;
    list-style: none;
  }

  .tag-list li {
    display: inline;
    font-size: 0.9em;
  }

  .tag-list li:not(:last-child)::after {
    content: ", ";
  }

  .project-body {
    display: block;
  }

  .project-body h3,
  .project-note h3 {
    margin-bottom: 5px;
  }

  .private-label {
    font-weight: bold;
  }

  /* レスポンシブデザイン */
  @media (max-width: 768px) {
    header h1, header nav {
      float: none;
      text-align: center;
    }

    header nav ul li {
      display: block;
      margin: 5px 0;
    }

    .basic-profile > div,
    .detail-list > div,
    .presentation-card {
      grid-template-columns: 1fr;
    }
  }