.back-arrow {
    position: absolute;
    top: 18px;
    left: 18px;
    z-index: 10;
    text-decoration: none;
    display: inline-block;
    transition: transform 0.2s;
}
.back-arrow:hover {
    transform: scale(1.12);
}
/* Layout 2x2 imagens lado a lado */
.img-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    justify-items: center;
    margin-bottom: 20px;
}
/* Barra de progresso */
.progress-bar-container {
    width: 100%;
    background: #f3e6ef;
    border-radius: 8px;
    height: 16px;
    margin-bottom: 24px;
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(229,115,180,0.08);
}
.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #e573b4 0%, #ef5fa7 100%);
    width: 0%;
    border-radius: 8px;
    transition: width 0.4s cubic-bezier(.4,0,.2,1);
}
/* Página mais500k */
.mais500k-img {
    display: block;
    margin: 0 auto 28px auto;
    max-width: 320px;
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(229,115,180,0.16);
}
.mais500k-btn {
    background: linear-gradient(90deg, #e573b4 0%, #ef5fa7 100%);
    color: #fff;
    border: none;
    padding: 16px 36px;
    border-radius: 24px;
    cursor: pointer;
    font-size: 1.15em;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(229,115,180,0.10);
    margin-top: 18px;
    transition: background 0.3s;
}
.mais500k-btn:hover {
    background: linear-gradient(90deg, #d94f9f 0%, #ef5fa7 100%);
}
.quiz-card {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border-radius: 14px;
    overflow: hidden;
    box-sizing: border-box;
    cursor: pointer;
    border: none;
    width: 200px;
    height: 200px;
}
.quiz-img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 14px;
    transition: transform 0.3s;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    background: #eee;
    border: 3px solid #e573b4; /* rosa suave */
    display: block;
}
.quiz-img:hover,
.quiz-img.zoom {
    transform: scale(1.12);
    box-shadow: 0 4px 16px rgba(229,115,180,0.18);
    border-color: #d94f9f;
}
.quiz-label {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(239,95,167,0.92);
    color: #fff;
    font-size: 1.12em;
    font-weight: 500;
    text-align: center;
    padding: 10px 0 7px 0;
    border-bottom-left-radius: 14px;
    border-bottom-right-radius: 14px;
    letter-spacing: 0.5px;
    margin: 0;
}