/* section */
.section-row {
    border-radius: 10px;
    padding-bottom: 50px;
    background-color: rgb(255,255,255);
}

.section-row h1 {
    text-align: center;
    font-size: 40px;
    margin-top: 50px;
    margin-bottom: 50px;
    font-weight: bold;
    color: rgb(0, 102, 255);
}

.section-row h2 {
    text-align: left;
    font-size: 24px;
    margin-top: 30px;
    margin-bottom: 10px;
    font-weight: bold;
    color: rgb(66, 72, 83);
}

.section-row p {
    font-size: 18px;
    margin-left: 30px;
    margin-top: 10px;
    margin-bottom: 10px;
    color: rgb(66, 72, 83);
}

.section-row a {
    font-size: 18px;
    margin-left: 30px;
    margin-top: 10px;
    margin-bottom: 10px;
    color: rgb(66, 72, 83);
}

.section-row a:hover{
    font-weight: bold;
    color: rgb(0, 102, 255);
}

.video-div {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-div {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-div img {
    max-width: 600px;
    max-height: 600px;
}

/* 适配手机 */
@media screen and (max-width: 768px) {
    /* section */
    .section-row {
        height: 500px;
        border-radius: 10px;
    }

    .section-row h1 {
        font-size: 36px;
        margin-top: 40px;
        margin-bottom: 20px;
    }

    .section-row h2 {
        margin-left: calc(50% - 150px);
        margin-top: 10px;
        margin-bottom: 10px;
        font-size: 16px;
    }

    .section-row p {
        font-size: 15px;
        margin-left: calc(50% - 100px);
        margin-top: 10px;
        margin-bottom: 10px;
    }
}