.microlab-intro {
    margin: 1rem 0 2rem 0;
    padding: 1rem 1.2rem;
    background: #f7f7f7;
    border-radius: .5rem;
}

.microlab-container {
    max-width: 900px;
    margin: 0 auto;
}

.microlab-block {
    margin: 2rem 0;
    padding: 1.4rem 1.6rem;
    border: 1px solid #ddd;
    border-radius: .7rem;
    background: #fff;
}

.microlab-block-header {
    display: flex;
    align-items: center;
    gap: .7rem;
    margin-bottom: 1rem;
}

.microlab-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.7rem;
    height: 1.7rem;
    padding: 0 .35rem;
    background: #111;
    color: #fff;
    font-weight: 700;
    border-radius: .15rem;
}

.microlab-title {
    margin: 0;
    font-size: 1.35rem;
}

.microlab-stimulus,
.microlab-question,
.microlab-activity {
    margin-bottom: 1rem;
}

.microlab-choices {
    margin: 1rem 0;
}

.microlab-choice {
    margin: .35rem 0;
}

.microlab-choice input {
    margin-right: .5rem;
}

.microlab-open-answer,
.microlab-short-answer {
    margin-top: 1rem;
}

.microlab-counter {
    margin-top: .5rem;
    font-size: .9rem;
    color: #666;
}

.microlab-feedback {
    margin: 1rem 0 0 1rem;
    padding: .9rem 1rem;
    border-left: 3px solid #777;
    background: #f5f5f5;
    border-radius: .35rem;
}

.microlab-reveal-button {
    margin-top: .8rem;
}

.microlab-type-reveal {
    border-style: dashed;
}

.microlab-type-stimulus,
.microlab-type-activity {
    background: #fff;
}

@media (max-width: 700px) {
    .microlab-container {
        max-width: 100%;
    }

    .microlab-block {
        padding: 1rem;
    }

    .microlab-block-header {
        align-items: flex-start;
    }
}

.microlab-hidden-block {
    display: none;
}

.microlab-reveal-lead {
    margin-bottom: 1rem;
}