/* 可选的额外CSS样式 */
.login-alternative {
    position: relative;
    margin: 2rem 0;
    text-align: center;
}
.login-alternative::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e5e7eb;
    z-index: -1;
}
.login-alternative span {
    background: #f9fafb;
    padding: 0 1rem;
    color: #6b7280;
}