* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: "Noto Sans JP", sans-serif;
      }

      img {
        max-width: 100%;
        height: auto;
      }

      /* body {
        background: #f4f6fb;
        color: #333;
      } */
      body {
        margin: 0;
        position: relative;
        min-height: 100vh;
        background: url("images/back.jpg") center/cover no-repeat;
        /* background: url("images/back.jpg") center/cover no-repeat fixed; */
      }
      body::before {
        content: "";
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.45); /* 暗さ調整 */
        z-index: -1;
      }

      /* ===== ヘッダー ===== */
      .header {
        background: linear-gradient(135deg, #ff512f, #dd2476);
        padding: 15px 20px;
        position: sticky;
        top: 0;
        z-index: 1000;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      }

      .header-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        max-width: 1100px;
        margin: 0 auto;
      }

      .logo-area {
        display: flex;
        align-items: center;
        gap: 12px;
      }

      .logo-area img {
        width: 50px;
        height: 50px;
        object-fit: contain;
      }

      .site-title {
        font-size: 0.9rem;
        font-weight: 600;
        color: #ffe6f0;
        overflow-wrap: anywhere;
      }

      .theme {
        font-weight: 700;
        font-size: 1.3rem;
        color: white;
        overflow-wrap: anywhere;
      }

      /* ===== ナビ ===== */
      nav ul {
        list-style: none;
        display: flex;
        gap: 18px;
        justify-content: center;
        margin-top: 10px;
        flex-wrap: wrap;
        padding: 0;
      }

      nav li a {
        text-decoration: none;
        color: white;
        font-size: 0.9rem;
        padding: 5px 10px;
        border-radius: 6px;
        transition: 0.2s ease;
      }

      nav li a:hover {
        background-color: rgba(255, 255, 255, 0.2);
      }

      /* ===== メイン ===== */
      .main {
        text-align: center;
        padding: 70px 20px;
      }

      .main h1 {
        font-size: 2.2rem;
        margin-bottom: 10px;
        color: #ffe6f0;
        line-height: 1.35;
        overflow-wrap: anywhere;
      }

      .main p {
        margin-bottom: 40px;
        font-weight: 600;
        color: #e4d3d3;
        overflow-wrap: anywhere;
      }

      /* ===== カード ===== */
      .container {
        max-width: 1100px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
        width: 100%;
      }

      .card {
        background: white;
        padding: 25px;
        border-radius: 16px;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
        transition: 0.3s ease;
        min-width: 0;
      }

      .card:hover {
        transform: translateY(-8px);
        box-shadow: 0 14px 30px rgba(0, 0, 0, 0.15);
      }

      /* ===== アイコン画像 ===== */
      .avatar {
        width: 100px;
        height: 100px;
        margin: 0 auto 15px;
        border-radius: 50%;
        overflow: hidden;
        border: 4px solid #ff4b7d;
      }

      .avatar img {
        width: 100%;
        height: 100%;
        object-fit: cover;
      }

      .role {
        font-size: 0.85rem;
        color: #888;
        margin-bottom: 5px;
      }

      .name {
        font-weight: 700;
        margin-bottom: 10px;
      }

      .description {
        font-size: 0.9rem;
        line-height: 1.6;
        color: #555;
        overflow-wrap: anywhere;
      }

      /* ===== フッター ===== */
      .footer {
        margin-top: 80px;
        padding: 30px;
        text-align: center;
        background: #222;
        color: #aaa;
        font-size: 0.85rem;
      }

      /* ===== レスポンシブ ===== */
      @media (max-width: 600px) {
        .header-top {
          flex-direction: column;
          align-items: flex-start;
          gap: 8px;
        }

        .header {
          padding: 12px;
        }

        .logo-area {
          width: 100%;
          gap: 10px;
        }

        .logo-area img {
          width: 42px;
          height: 42px;
        }

        .site-title {
          font-size: 0.8rem;
        }

        .theme {
          font-size: 1rem;
        }

        nav ul {
          display: grid;
          grid-template-columns: repeat(2, minmax(0, 1fr));
          gap: 8px;
          margin-top: 12px;
        }

        nav li a {
          display: block;
          text-align: center;
          font-size: 0.85rem;
          padding: 8px 6px;
        }

        .main {
          padding: 36px 12px;
        }

        .main h1 {
          font-size: 1.45rem;
        }

        .main p {
          font-size: 0.95rem;
          margin-bottom: 22px;
        }

        .container {
          grid-template-columns: 1fr;
          gap: 14px;
        }

        .card {
          padding: 18px 14px;
        }

        .footer {
          margin-top: 40px;
          padding: 20px 12px;
        }
      }