#index {
    height: calc(100dvh - 100px);
	background-image: url(../img/travel1.png);
	background-repeat: no-repeat;
	background-position: top center;
	background-size: cover;
    background-attachment: fixed;
    position: relative;
    width: 100%;
}

#index::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.5); /* 白色遮罩，透明度 60% */
}

#index h1 {
    z-index: 100;
    font-size: 90px;
    font-weight: bolder;
    color: var(--364559);
    text-align: center;
    text-shadow: 5px 5px 5px var(--FFFFFF);
    position: absolute;
    top: 35%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#index .indexBtn{
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: absolute;
    bottom: 10%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    max-width: 1200px;
    margin: 0 auto;
}

#index .indexBtn a {
    text-decoration: none;
    background: var(--51729e);
    color: var(--FFFFFF);
    font-size: 30px;
    font-weight: bolder;
    padding: 10px 20px;
    border: 2px solid var(--FFFFFF);
    border-radius: 15px;
    margin: 10px;
    transition: all 0.3s;
}

#index .indexBtn a:hover {
    background: var(--FFFFFF);
    color: var(--51729e);
}



#service {
    position: relative;
    width: 90%;
    height: auto;
    min-height: calc(100dvh - 100px - 10%);
    max-width: 1500px;
    padding: 5% 0;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
}

#service .item{
    width: 300px;
    padding: 10px;
    margin: 10px;
    flex: 1 1 20%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
}


#service .icon {
    background: var(--51729e);
    border-radius: 50%;
    width: 200px;
    height: 200px;
    font-size: 120px;
    color: var(--FFFFFF);
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    border: 2px solid var(--FFFFFF);
    box-shadow: 0px 0px 10px 5px var(--364559);
}

#service .icon i {
    padding: 5%;
    margin: 5%;
    color: var(--FFFFFF);
}

#service .tittle{
    font-size: 30px;
    font-weight: bolder;
    color: var(--364559);
    text-align: center;
    margin: 10px 0;
}

#service .description{
    font-size: 20px;
    text-align: center;
    margin: 10px 0;
    line-height: 1.5;
    padding: 0 10%;
}

@media (max-width: 1440px) {

    #index h1 {
        font-size: 70px;
    }

    #service .icon {
        width: 150px;
        height: 150px;
        font-size: 100px;
    }

    #service .tittle {
        font-size: 25px;
    }
}

@media (max-width: 1200px) {

    #index {
        height: calc(100dvh - 80px);
    }

}

@media (max-width: 992px) {

    #index h1 {
        font-size: 8vw;
    }
    #index .indexBtn a {
        font-size: 20px;
    }

    #service .item {
        flex: 1 1 45%; 
    }



}