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

.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;
    }



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

    .professor-overlay {
      position: absolute;
      width: 100%;
      height: 100%;
      background: rgba(0,0,0,0.45);
    }

    .professor-text {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      color: white;
      text-align: center;
    }

    .professor-text h1 {
      font-size: 52px;
      margin-bottom: 12px;
      font-weight: 700;
    }

    .professor-text h2 {
      font-size: 20px;
      font-weight: 400;
      margin-top: 0;
    }
    .professor-photo-wrapper {
      margin: 32px auto 0;
      text-align: center;
    }

    .professor-photo {
      max-width: 260px;
      width: 100%;
      height: auto;
      border-radius: 0px;
    }



    .content-section {
      max-width: 1100px;
      margin: 60px auto;
      padding: 0 20px;
    }

    .section-title {
      font-size: 26px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .section-list li {
      margin-bottom: 10px;
      font-size: 16px;
    }


    .footer {
      margin-top: 60px;
      padding: 40px 0;
      background: rgba(106,111,179,0.45);
      text-align: center;
      font-size: 16px;
      color: #000;
    }
    .section-divider {
      width: 1280px;
      max-width: 90%;
      height: 0;
      border-top: 1px solid #DDDDDD;
      margin: 12px 0 28px;
    }

     .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;
    }