body {
      margin: 0;
      font-family: 'Inter', sans-serif;
      background: #ffffff;
      color: #222;
    }

    .nav-bar {
      width: 100%;
      height: 72px;
      background: #ffffff;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0 30px;
      box-shadow: 0 1px 4px rgba(0,0,0,0.08);
      position: fixed;
      top: 0;
      left: 0;
      z-index: 1000;
    }

    .nav-left {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .nav-logo {
      width: 42px;
      height: 42px;
      background: url("/static/img/logo.png") no-repeat center/contain;
    }

    .nav-title {
      font-size: 26px;
      font-weight: 600;
      margin-top: 6px;
    }

    .nav-menu {
      display: flex;
      gap: 50px;
      font-size: 18px;
      align-items: center;
      white-space: nowrap;
      margin-right: 60px;
    }

    .nav-menu a,
    .dropdown-main {
      color: #333;
      text-decoration: none;
      height: 25px;
      display: flex;
      align-items: center;
      cursor: pointer;
    }

    .nav-menu a:hover,
    .dropdown-main:hover {
      color: #000;
    }

    .dropdown {
      position: relative;
      display: inline-block;
    }

    .dropdown-content {
      position: absolute;
      top: 100%;
      left: 50%;
      transform: translateX(-50%);
      background: #ffffff;
      display: none;
      padding: 6px 0;
      border-radius: 8px;
      box-shadow: 0 4px 8px rgba(0,0,0,0.15);
      z-index: 999;
      width: max-content;
      min-width: 0;
    }

    .dropdown-content a {
      padding: 8px 16px;
      display: block;
      white-space: nowrap;
      text-decoration: none;
      color: #333;
      font-size: 16px;
    }

    .dropdown-content a:hover {
      background: #f3f3f3;
    }

    .dropdown:hover .dropdown-content {
      display: block;
    }

    .team {
      margin-top: 72px;
      width: 100%;
      height: 200px;
      background: rgba(106,111,179,0.45) no-repeat center/cover;
      position: relative;
    }

    .team-overlay {
      position: absolute;
      inset: 0;
      background: rgba(0,0,0,0.45);
    }

    .team-text {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      text-align: center;
      color: white;
      max-width: 760px;
      padding: 0 20px;
    }

    .team-text h1 {
      font-size: 40px;
      margin-bottom: 8px;
      font-weight: 700;
    }

    .team-text h2 {
      font-size: 20px;
      font-weight: 400;
      margin-bottom: 0;
      opacity: 0.9;
    }

    .main-wrapper {
      max-width: 1120px;
      margin: 40px auto 60px;
      padding: 0 24px;
    }



    .photo-year-bar {
      margin-top: 100px;
      margin-bottom: 30px;
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 14px;
      font-size: 14px;
      color: #555;
    }

    .photo-year-btn {
      cursor: pointer;
      color: #555;
      user-select: none;
    }

    .photo-year-btn:hover {
      color: #000;
    }

    .photo-year-btn.disabled {
      color: #ccc;
      cursor: default;
    }

    .photo-year-label {
      font-size: 16px;
      font-weight: 600;
    }

    .photo-year-group {
      display: none;
    }

    .photo-year-group.active {
      display: block;
    }

    .photo-item {
      display: flex;
      gap: 50px;
      margin-bottom: 32px;
      padding-bottom: 30px;
      padding-top: 30px;
      border-bottom: 1px solid #eee;
    }

    .photo-img {
      width: 320px;
      height: 320px;
      object-fit: contain;
      border-radius: 8px;
      background: #FFF;
    }

    .photo-info {
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .photo-title {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .photo-meta {
      font-size: 14px;
      color: #555;
      margin-bottom: 4px;
    }

    .photo-date {
      font-size: 13px;
      color: #777;
    }

    .professor-footer {
      display: block;
      width: 100vw;
      background: rgba(106, 111, 179, 0.47);
      padding: 48px 0;
      margin-top: 80px;
      position: relative;
      left: 50%;
      right: 50%;
      margin-left: -50vw;
      margin-right: -50vw;
    }

    .footer-inner {
      max-width: 1130px;
      margin: 0 auto;
      padding: 0 20px;
      color: #333;
    }

    .footer-title {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .footer-info {
      font-size: 12px;
      line-height: 1.7;
      color: #333;
      margin-bottom: 24px;
    }

    .footer-divider {
      width: 100%;
      border-top: 1px solid #444;
      margin: 20px 0;
    }

    .footer-copy {
      font-size: 10px;
      color: #666;
    }

    @media (max-width: 768px) {
      .nav-menu {
        gap: 24px;
        font-size: 16px;
        margin-right: 0;
      }
      .team {
        height: 220px;
      }
      .team-text h1 {
        font-size: 30px;
      }
      .team-text h2 {
        font-size: 16px;
      }
      .photo-item {
        flex-direction: column;
      }
      .photo-img {
        width: 100%;
        height: 220px;
      }
    }