/* research page */
section.intro{
    background-color: #fff;
}

section.main {
    padding-top: calc(120 * var(--rpx-50));
    padding-bottom: calc(120 * var(--rpx-50));
    background-color: #f7f7f7;
}

.field-list{
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: calc(30 * var(--rpx));
}

.field{
    position: relative;
    height: calc(600 * var(--rpx));
    color: #fff;
}

.field-back{
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.field-back::after{
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: rgba(0, 0, 0, .6);
    z-index: 200;
    transition: .3s;
}

.field-back picture {
    display: block;
    width: 100%;
    height: 100%;
}

.field-back img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.field .overlay{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: calc(640 * var(--rpx));
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    z-index: 220;
    transition: background-color .25s ease;
}

.field .overlay>*{
    width: calc(480 * var(--rpx-75));
}

.field .title{
    position: relative;
    font-size: calc(40 * var(--rpx));
}

.field .title .text{
    position: relative;
    z-index: 220;
}

.field .title::before{
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    background: linear-gradient(to right, #E23918, #EAA923);
    width: calc(92 * var(--rpx));
    height: calc(16 * var(--rpx));
}

.field .desc{
    margin-top: calc(24 * var(--rpx));
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.5em;
}

.field .desc p+p{
    margin-top: 1.5em;
}

.field.active .overlay{
    background-color: rgba(12, 58, 150, .77);
}


.field.active .field-back::after{
    opacity: 0;
}

.intro .desc {
    font-size: 1rem;
}

.yiiPager .first,
.yiiPager .last{
    display: none;
}

@media (max-width: 828px) {
    section.main {
        padding-top: calc(48 * var(--rpx));
        padding-bottom: calc(48 * var(--rpx));
    }

    .field {
        height: auto;
        display: flex;
        flex-direction: column;
        color: #fff;
    }

    .field-back {
        position: relative;
        width: 100%;
        aspect-ratio: 16/10;
        flex-shrink: 0;
    }

    .field-back picture {
        position: absolute;
        inset: 0;
    }

    .field-back img {
        position: absolute;
        inset: 0;
    }

    .field-back::after{
        display: none;
    }

    .field .overlay{
        position: relative;
        width: 100%;
        background-color: var(--theme-blue);
        color: #fff;
        padding: calc(60 * var(--rpx)) calc(32 * var(--rpx));
        align-items: flex-start;
        justify-content: flex-start;
    }

    .field .overlay>* {
        width: 100%;
        max-width: 100%;
    }

    .field .title {
        font-size: calc(60 * var(--rpx));
    }

    .field .title::before {
        width: calc(60 * var(--rpx));
        height: calc(10 * var(--rpx));
    }

    .intro .split-layout .text .title {
        font-size: calc(78 * var(--rpx-50));
    }

    .intro .split-layout .text .desc {
        font-size: calc(36 * var(--rpx));
    }
}