.login-wrapper {
    max-width: 400px;
    margin: 80px auto;
    padding: 40px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 24px;
    color: #333;
    margin-bottom: 10px;
}

.login-header p {
    color: #666;
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.btn-login {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    margin-top: 10px;
}

.login-footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    color: #999;
    font-size: 12px;
}

.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 任务本入口区域 */
.login-tasks-entry {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.login-tasks-entry .btn-tasks {
    width: 100%;
    padding: 12px;
    font-size: 15px;
    margin-bottom: 10px;
}

.tasks-hint {
    color: #999;
    font-size: 12px;
    margin: 0;
}