* { box-sizing: border-box; font-family: "Segoe UI", Tahoma, sans-serif; }
    body {
      height: 100%;
      overflow: hidden; 
      margin: 0;
      min-height: 100vh;
     /* background: linear-gradient(180deg, #bfeef2 0%, #9fd8e5 100%); */
      background: #f5f6f7;
      color: #234;
    }

    /* Header */
    header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 2px 32px;
      background:#fff;
    }
    header .logo {
      font-weight: 700;
      font-size: 16px;
      color: #fff;
      background: #fff;
    }
    header .lang {
      font-size: 20px;
      cursor: pointer;
    }

    /* Main */
    main {
      text-align: center;
      padding: 80px 20px 40px;
    }

    main h1 {
      font-size: 44px;
      margin: 16px 0 8px;
      font-weight: 600;
    }

    main h2 {
      font-size: 20px;
      font-weight: 400;
      color: #456;
      margin-bottom: 40px;
    }

    /* Buttons */
    .btn-login {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 16px 32px;
      background: #163b6b;
      color: #fff;
      border-radius: 10px;
      font-size: 18px;
      font-weight: 500;
      text-decoration: none;
      box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    }

    .btn-search {
      margin-top: 18px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 14px 28px;
      background: #d9f6fa;
      color: #234;
      border-radius: 10px;
      font-size: 17px;
      text-decoration: none;
      border: 1px solid #c2e9ef;
    }

    .btn-login:hover {
      background: #969ca3;        /* สีตอนชี้เมาส์ */
      transform: translateY(-2px);
}

    /* Illustration */
    .illustration {
      margin-top: 70px;
      display: flex;
      justify-content: center;
    }

    .card {
      width: 700px;
      max-width: 95%;
      background: rgba(255,255,255,0.85);
      border-radius: 20px;
      padding: 30px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .card .text {
      text-align: left;
    }

    .card .text h3 {
      margin: 0 0 10px;
      color: #1e7f5c;
    }

    .card .text p {
      margin: 0;
      color: #456;
    }

    .avatar {
      width: 140px;
      height: 180px;
      border-radius: 14px;
      background: linear-gradient(135deg, #cdefff, #ffffff);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      color: #789;
    }

    .psu-footer {
     background: #789;
     color: #ffffff;
     padding: 6px 32px 16px;
     border-radius: 10px 10px 10px 10px;
     margin-top: 10px;
}

.footer-content {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 24px;
}

.login-box {
  max-width: 900px;
  max-height:1200px;
  margin: 40px auto;
  padding: 40px 32px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
  text-align: center;
}




    @media (max-width: 600px) {
      main h1 { font-size: 32px; }
      .card { flex-direction: column; text-align: center; }
      .card .text { text-align: center; }
    }