* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Poppins', sans-serif;
  }

  body {
      background: linear-gradient(135deg, #f5f5f5 0%, #ff907a 80%);
      min-height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      position: relative;
      overflow: hidden;
  }

  .container {
      background: rgba(255, 255, 255, 0.95);
      padding: 40px 50px;
      border-radius: 20px;
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
      width: 450px;
      transform: translateY(0);
      transition: all 0.3s ease;
      position: relative;
      z-index: 1;
  }

  .container:hover {
      transform: translateY(-5px);
  }

  .brand {
      text-align: center;
      margin-bottom: 40px;
  }

  .brand img {
      width: 120px;
      margin-bottom: 15px;
  }

  .brand h1 {
      color: #333;
      font-size: 1.8em;
      letter-spacing: 2px;
  }

  .input-group {
      margin-bottom: 25px;
      position: relative;
  }

  .input-group input {
      width: 100%;
      padding: 15px 20px;
      border: 2px solid #eee;
      border-radius: 10px;
      font-size: 16px;
      transition: all 0.3s ease;
  }

  .input-group input:focus {
      border-color: #FB421F;
      outline: none;
      box-shadow: 0 0 10px rgba(255, 107, 107, 0.2);
  }

  .input-group label {
      position: absolute;
      left: 20px;
      top: 50%;
      transform: translateY(-50%);
      color: #999;
      pointer-events: none;
      transition: all 0.3s ease;
  }
  .input-group input:focus + label,
  .input-group input:valid + label {
      top: -10px;
      left: 10px;
      font-size: 12px;
      background: white;
      padding: 0 5px;
      color: #FB421F;
  }

  .remember-forgot {
      display: flex;
      justify-content: space-between;
      margin-bottom: 25px;
      font-size: 14px;
  }

  .remember-forgot a {
      color: #666;
      text-decoration: none;
      transition: color 0.3s ease;
  }

  .remember-forgot a:hover {
      color: #FB421F;
  }

  .login-btn {
      width: 100%;
      padding: 15px;
      background: linear-gradient(45deg, #FB421F, #ff8e8e);
      border: none;
      border-radius: 10px;
      color: white;
      font-size: 16px;
      cursor: pointer;
      transition: transform 0.3s ease;
  }

  .login-btn:hover {
      transform: scale(0.98);
  }

  .register-link {
      text-align: center;
      margin-top: 25px;
      color: #666;
  }

  .register-link a {
      color: #FB421F;
      text-decoration: none;
      font-weight: 600;
  }

  /* 背景装饰元素 */
  .deco-circle {
      position: absolute;
      background: rgba(255, 107, 107, 0.1);
      border-radius: 50%;
  }

  .deco-circle:nth-child(1) {
      width: 300px;
      height: 300px;
      top: -150px;
      right: -150px;
  }

  .deco-circle:nth-child(2) {
      width: 200px;
      height: 200px;
      bottom: -100px;
      left: -100px;
  }

  @media (max-width: 480px) {
      .container {
          width: 90%;
          padding: 30px;
      }
  }
  .image1{
    position: absolute;
    left: 400px;
    top: 200px;
    opacity: .3;
  }
  .image2{
    position: absolute;
    right:370px;
    bottom: 100px;
    opacity: .5;
  }