/* 全局样式重置 */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
      list-style: none;
    }

    /* 自定义变量 */
    :root {
      --color-primary: #165DFF;
      --color-primary-light: #E8F3FF;
      --color-text: #333333;
      --color-text-light: #666666;
      --color-border: #DDDDDD;
      --color-white: #FFFFFF;
      --radius-sm: 4px;
      --radius-md: 6px;
      --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.08);
    }

    /* 页面主体 */
    body {
      background-color: #F5F7FA;
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 1rem;
    }

    /* 登录卡片 */
    .login-card {
      width: 100%;
      max-width: 400px;
      background: var(--color-white);
      border-radius: 12px;
      box-shadow: var(--shadow-light);
      padding: 3rem 2.5rem;
      text-align: center;
    }

    /* 系统logo */
    .system-logo {
      width: 64px;
      height: 64px;
      margin: 0 auto 1.5rem;
      background-color: var(--color-primary-light);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .logo-icon {
      width: 32px;
      height: 32px;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23165DFF'%3E%3Cpath d='M3 3h18v18H3V3zm9 15V9H7v9h5zm4 0V6h5v12h-5z'/%3E%3C/svg%3E");
      background-size: contain;
      background-repeat: no-repeat;
    }

    /* 标题区域 */
    .system-title {
      font-size: 20px;
      font-weight: 600;
      color: var(--color-text);
      margin-bottom: 0.5rem;
    }

    .login-desc {
      font-size: 14px;
      color: var(--color-text-light);
      margin-bottom: 2.5rem;
    }

    /* 表单样式 */
    .form-group {
      margin-bottom: 1.5rem;
      text-align: left;
    }

    .form-label {
      display: block;
      font-size: 14px;
      color: var(--color-text);
      margin-bottom: 0.5rem;
    }

    .form-label .required {
      color: #FF4D4F;
      margin-left: 4px;
    }

    .form-input {
      width: 100%;
      height: 44px;
      padding: 0 12px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      font-size: 14px;
      transition: border-color 0.2s;
      outline: none;
    }

    .form-input::placeholder {
      color: #CCCCCC;
    }

    .form-input:focus {
      border-color: var(--color-primary);
    }

    /* 验证码区域 */
    .code-group {
      display: flex;
      gap: 10px;
    }

    .code-input {
      flex: 1;
    }

    .get-code-btn {
      width: 130px;
      height: 44px;
      background-color: var(--color-primary);
      color: white;
      border: none;
      border-radius: var(--radius-md);
      font-size: 14px;
      cursor: pointer;
      transition: opacity 0.2s;
    }

    .get-code-btn:disabled {
      background-color: #99BBFF;
      cursor: not-allowed;
    }

    /* 登录按钮 */
    .login-btn {
      width: 100%;
      height: 44px;
      background-color: var(--color-primary);
      color: white;
      border: none;
      border-radius: var(--radius-md);
      font-size: 16px;
      font-weight: 500;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      margin-top: 1rem;
      transition: opacity 0.2s;
    }

    .login-btn:disabled {
      background-color: #99BBFF;
      cursor: not-allowed;
    }

    /* 错误提示 */
    .error-text {
      font-size: 12px;
      color: #FF4D4F;
      margin-top: 4px;
      display: none;
    }

    .error-text.show {
      display: block;
    }

    /* 状态提示 */
    .status-tip {
      margin-top: 1rem;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 6px;
      display: none;
    }

    .status-tip.show {
      display: flex;
    }

    .status-success {
      background-color: #F6FFED;
      color: #52C41A;
      border: 1px solid #B7EB8F;
    }

    .status-error {
      background-color: #FFF2F0;
      color: #F5222D;
      border: 1px solid #FFCCC7;
    }

    /* 加载动画 */
    .spin-animation {
      animation: spin 1s linear infinite;
      display: inline-block;
      font-size: 16px;
    }

    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }