.login-container #githubLoginBtn {
    width: 100%;
    max-width: 320px;
    height: 44px;
    background-color: #f6f8ff;
    border: 1px solid #dadce0;
    border-radius: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    cursor: pointer;
    transition: background-color .2s ease, box-shadow .2s ease, transform .2s ease;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 15px;
    color: #141413;
    font-weight: 500;
    margin: 10px auto 0; /* 放在 Google 下方增加间距 */
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    text-decoration: none;
}

.login-container #githubLoginBtn:hover {
    background-color: rgba(88, 159, 177, 0.5);
    color: #141413;
}

.login-container #githubLoginBtn:active {
    transform: translateY(0);
    box-shadow: none;
}

.login-container #githubLoginBtn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.login-container #githubLoginBtn .google-icon {
    width: 20px !important;
    height: 20px !important;
    min-width: 20px;
    min-height: 20px;
    max-width: 20px;
    max-height: 20px;
    margin-right: 0;
    flex-shrink: 0;
    object-fit: contain;
    display: block;
}