html, body {
    width: 100%;
    height: 100%;
    background-color: #fffefe;
}

* {
    padding: 0;
    margin: 0;
}

a {
    text-decoration: none;
}

.w {
    width: 16.25rem;
    margin: 0 auto;
}

/* 吸顶导航 */

.nav-height {
    position: relative;
    height: .8375rem;
}

.nav-wrap {
    width: 100%;
    height: .8375rem;
    background: #fffefe;
}

.nav-wrap.navFix {
    position: fixed;
    top: 0;
    left: 0;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
    /* border-bottom: 1px solid #e3e3e3\9; */
    z-index: 99999;
}

.nav-wrap ul {
    padding: 0;
    margin: 0 auto;
    width: 100%;
    height: 100%;
    display: block;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-wrap.navFix ul {
    border-bottom: 0;
}

.nav-wrap li {
    height: 100%;
    line-height: .8375rem;
}

.nav-wrap li a {
    display: block;
    /* padding: 0 20px; */
    color: #a0a0a0;
    font-size: .325rem;
    text-decoration: none;
}

.nav-wrap li a:hover {
    color: #1a73e8;
}

.nav-wrap li+li {
    margin-left: 10%;
}

.nav-wrap li a.active {
    border-bottom: 2px solid #1a73e8;
    color: #1a73e8;
}

.nav-mobile {
    display: none;
    font-weight: bold;
    width: 100%;
}

.click-me {
    width: 150px;
    height: 30px;
    background: #4680d1;
    color: white;
    text-align: center;
    line-height: 30px;
}

.click-me a {
    display: block;
    color: white;
}

.main_text {
    width: 100%;
    height: 11.5625rem;
    margin: 0 auto;
    background-color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.main_text h3 {
    font-size: .475rem;
    color: #343434;
    margin: .9625rem 0 .5rem;
    font-weight: 500;
}

.main_text p {
    font-size: .275rem;
    color: #000;
    line-height: 2;
    text-align: center;
    margin-bottom: .625rem;
}

.main_text img {
    width: 16.325rem;
    height: 8.1rem;
}

.main_part {
    width: 100%;
    height: 15rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
    background-color: #fcfcfd;
}

.main_part h3 {
    font-size: .475rem;
    color: #343434;
    margin: .75rem 0 0;
    font-weight: 500;
}

.main_part p {
    font-size: .275rem;
    color: #000;
    line-height: 2;
    text-align: center;
    margin: .6rem 0;
}

.part {
    width: 14.75rem;
    height: 10.3rem;
    position: relative;
}

.img_item1 {
    width: 50%;
    height: 50%;
    vertical-align: middle;
    position: absolute;
    left: 0;
    top: 0;
}

.img_item2 {
    width: 50%;
    height: 50%;
    vertical-align: middle;
    position: absolute;
    right: 0;
    top: 0;
}

.img_item3 {
    width: 50%;
    height: 50%;
    vertical-align: middle;
    position: absolute;
    left: 0;
    bottom: 0;
}

.img_item4 {
    width: 50%;
    height: 50%;
    vertical-align: middle;
    position: absolute;
    right: 0;
    bottom: 0;
}

/* .part_bg {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
} */

.part img {
    /* width: 7.25rem; */
    /* height: 5.075rem; */
    cursor: pointer;
}

.img_item1:hover, .img_item2:hover, .img_item3:hover, .img_item4:hover {
    transform: scale(1.05);
}

.part_float {
    width: 3.125rem;
    height: 3.125rem;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.color {
    width: 100%;
    height: 13rem;
    background-color: #202436;
}

.bot1 {
    width: 24rem;
    height: 13rem;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: url(../images3/products-model/bg.png) no-repeat;
    background-size: cover;
    background-position: center center;
    position: relative;
    overflow: hidden;
}

.bot1 h3 {
    font-size: .475rem;
    color: #fff;
    margin: .375rem 0 0;
    font-weight: 500;
}

.bot1_item {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    width: 12.75rem;
    height: 2rem;
    left: 50%;
    bottom: 5%;
    transform: translateX(-50%);
}

.bot1_item img {
    width: 100%;
    height: 100%;
}

/* .bot1-item-2 {
    width: 3rem;
    height: .875rem;
}

.bot1-item-3 {
    width: 3.2625rem;
    height: 1.8rem;
}

.bot1-item-4 {
    width: 2.2875rem;
    height: .875rem;
} */

.bot {
    width: 100%;
    height: 8.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
}

.bot h3 {
    font-size: .475rem;
    color: #000;
    margin: 1.4375rem 0 .95rem;
    font-weight: 500;
}

.bot_pic {
    width: 15.625rem;
    height: 3.1625rem;
    display: flex;
    align-items: center;
    justify-content: space-around;
}

.bot_item1 {
    width: 3.775rem;
    height: 100%;
    /* background: url(../images3/products-safe/bot1.jpg) no-repeat;
    background-size: cover;
    background-position: center center; */
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.bot_item1 img {
    width: 100%;
    height: 100%;
    transition: all .5s ease-out;
}

.bot_item1:hover img {
    transform: scale(1.1);
}

/* .bot_item2 {
    width: 3.775rem;
    height: 100%;
    background: url(../images3/products-safe/bot2.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
    position: relative;
}

.bot_item3 {
    width: 3.775rem;
    height: 100%;
    background: url(../images3/products-safe/bot3.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
    position: relative;
}

.bot_item4 {
    width: 3.775rem;
    height: 100%;
    background: url(../images3/products-safe/bot4.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
    position: relative;
} */

.bot_text {
    width: 100%;
    height: .625rem;
    background: rgba(0, 0, 0, .3);
    position: absolute;
    bottom: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bot_text span {
    color: #fff;
    font-size: .325rem;
    font-weight: 500;
}