/* ============================================================
   PC 宽屏默认  ≥1440px（1920×1080 / 2560×1440）
   ============================================================ */

.index-box {
    background: url(../img/bg.jpg) no-repeat center center / cover !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .5rem;              /* 50px */
}

.index-box .logo {
    width: 1.67rem;
    max-width: 3.2rem;       /* 320px，超宽屏不失控 */
}

.index-box .logo img {
    width: 100%;
    height: auto;
    display: block;
}

.index-box .txt {
    background: #002A406A;
    padding: .15rem .25rem;
    border-radius: .1rem;    /* 10px */
    color: #FFFFFF;
    font-size: .16rem;
}
.index-box .txt .num {
    font-weight: bold;
    font-size: .3rem;
    position: relative;
    padding-left: .03rem;
    font-family: 'Source Han Sans SC', PingFang SC, sans-serif;
    font-weight: bold;
    color: #BEB1B1;
    line-height: 37px;
    background: linear-gradient(0deg, #1AA4CE 0%, #13AB7A 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.index-box .txt .n {
    position: absolute;
    top: .02rem;
    left: 0;
    z-index: 1;
    color: #BEB1B1;
    background: linear-gradient(0deg, #FFFFFF 0%, #FFFFFF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.index-box .enter{
    height: .45rem;
    background: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: .225rem;    /* 22.5px */
    font-size: .21rem;
    color: #4C93B0;
    padding: 0 0rem 0 .06rem;
}

.index-box .enter .icon{
    width: .33rem;
    height: .33rem;
    border-radius: 50%;
    background-color: #5098BB;
    display: flex;
    align-items: center;
    justify-content: center;
}

.index-box .enter .icon img{
    height: .225rem;
}

.index-box .enter .la{
    padding: 0 .15rem;
}

.index-box .p_txt{
    display: none;
}


/* ---- Swiper 全屏焦点图 ---- */
.fullscreen-swiper {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.fullscreen-swiper .swiper-slide {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    overflow: hidden;
}

/* 遮罩层 */
.fullscreen-swiper .swiper-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
    to right,
    rgba(0, 20, 50, .62) 0%,
    rgba(0, 20, 50, .25) 55%,
    rgba(0, 20, 50, .04) 100%
    );
    z-index: 1;
}

/* 幻灯文字区 */
.slide-body {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: .8rem;
    opacity: 0;
    transform: translateY(.25rem);
    transition: none;
}

/* 激活时进场 */
.swiper-slide-active .slide-body {
    animation: sbIn .65s .2s ease forwards;
}

@keyframes sbIn {
    from { opacity: 0; transform: translateY(.25rem); }
    to   { opacity: 1; transform: translateY(0); }
}

.slide-en {
    font-size: .12rem;
    color: rgba(255,255,255,.55);
    letter-spacing: .1rem;
    margin-bottom: .14rem;
    text-transform: uppercase;
}

.slide-title {
    font-size: .54rem;
    font-weight: bold;
    color: #fff;
    line-height: 1.15;
    margin-bottom: .18rem;
    text-shadow: 0 2px 20px rgba(0,0,0,.3);
}

.slide-desc {
    font-size: .16rem;
    color: rgba(255,255,255,.8);
    margin-bottom: .28rem;
}

.slide-line {
    width: 0;
    height: 2px;
    background: rgba(255,255,255,.7);
}

.swiper-slide-active .slide-line {
    animation: lineIn .5s .6s ease forwards;
}

@keyframes lineIn {
    from { width: 0; }
    to   { width: .8rem; }
}

/* ---- 自定义分页器（右侧垂直） ---- */
.fullscreen-swiper .swiper-pagination {
    left: .3rem !important;
    top: auto !important;
    bottom: .6rem !important;
    transform: translateY(-50%);
    width: auto !important;
    height: .08rem !important;
    display: flex;
    align-items: center;
    gap: .1rem;
}

.fullscreen-swiper .swiper-pagination-bullet {
    width: .08rem;
    height: .08rem;
    border-radius: 50%;
    background: rgba(255,255,255,.45);
    opacity: 1;
    margin: 0 !important;
    transition: height .3s, border-radius .3s, background .3s;
    flex-shrink: 0;
}

.fullscreen-swiper .swiper-pagination-bullet-active {
    width: .12rem;
    height: .12rem;
    background: #fff;
}

/* ---- 上下箭头 ---- */
.fullscreen-swiper .swiper-button-prev,
.fullscreen-swiper .swiper-button-next {
    width: .44rem;
    height: .44rem;
    border: 1px solid rgba(255,255,255,.5);
    border-radius: 50%;
    background: rgba(255,255,255,.12);
    backdrop-filter: blur(4px);
    left: auto !important;
    right: .18rem;
    color: #fff;
    transition: background .25s;
    margin-top: 0;
}

.fullscreen-swiper .swiper-button-prev {
    top: auto;
    bottom: 1.1rem;
}

.fullscreen-swiper .swiper-button-next {
    top: auto;
    bottom: .52rem;
}

.fullscreen-swiper .swiper-button-prev:hover,
.fullscreen-swiper .swiper-button-next:hover {
    background: rgba(255,255,255,.28);
}

.fullscreen-swiper .swiper-button-prev::after {
    content: 'prev';
    font-size: .13rem;
    font-weight: bold;
}

.fullscreen-swiper .swiper-button-next::after {
    content: 'next';
    font-size: .13rem;
    font-weight: bold;
}

/* ---- 计数器（右下角） ---- */
.swiper-counter {
    position: absolute;
    left: .3rem;
    bottom: 1rem;
    z-index: 10;
    color: rgba(255,255,255,.6);
    font-size: .13rem;
    display: flex;
    align-items: baseline;
    gap: .04rem;
    pointer-events: none;
}

.swiper-counter .cur {
    font-size: .3rem;
    font-weight: bold;
    color: #fff;
    line-height: 1;
}

.bom-news{
    height: .35rem;
    background: rgba(27, 124, 173, 1);
    display: flex;
    align-items: center;
    font-size: .14rem;
    padding: 0 0rem 0 .04rem;
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
}
.bom-news .item{
    flex: 1;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0 .5rem;
    overflow: hidden;
}
.bom-news .item .t{
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: .1rem;
}
.bom-news .line{
    width: 1px;
    height: .15rem;
    background: rgba(72, 157, 200, 1);
    margin: 0 .1rem;
}
.mouse{
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: .8rem;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    pointer-events: none;
    z-index : 111;
    color: #FFFFFF;
    transition: all .3s;
}
.mouse .ms{
    width: .4rem;
}
.jtbox{
    padding: 0 .6rem;
    display: flex;
}
.jtbox .im {
    height: .15rem;
    margin-left: .2rem;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.slide2-box{
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    padding: 0 1rem;
}
.slide2-box .jj{
    flex: 1;
}
.slide2-box .jj .mm{
    display: inline-flex;
    align-items: center;
    padding: .01rem .1rem .01rem .01rem;
    border: .01rem solid #FFFFFF;
    border-radius: .3rem;
}
.slide2-box .jj .mm .icon{
    width: .4rem;
    height: .4rem;
    margin-right: .1rem;
}
.slide2-box .jj .mm .icon img{
    width: 100%;
}
.slide2-box .tj{
    flex: 1;
    margin-left: 1rem;
}
.slide2-box .tj .ii{
    flex: 1;
    font-size: .16rem;
    font-weight: bold;
}
.slide2-box .tj .ii span{
    font-size: .5rem;
    font-family: 'Source Han Sans SC', PingFang SC, sans-serif;
}
.slide2-box .tj .br{
    margin-top: .5rem;
}
.slide3-box{
    display: flex;
    justify-content: center;
    color: #FFFFFF;
}
.slide3-box .cn{
    width: 1.3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-family: 'Source Han Sans SC', PingFang SC, sans-serif;
    justify-content: center;
    margin: 0 .6rem;
    position: relative;
}
.slide3-box .cn .img{
    height: .8rem;
    position: relative;
    z-index: 2;
}
.slide3-box .cn .img img{
    height: 100%;
}
.slide3-box .cn .text{
    font-size: .18rem;
    font-weight: bold;
    margin-top: .2rem;
    position: relative;
    z-index: 2;
}
.slide3-box .cn .en{
    font-size: .12rem;
    color: rgba(255, 255, 255, .5);
    position: relative;
    z-index: 2;
}
.slide3-box .cn .desc, .slide3-box .cn .bg{
    display: none;
}
.slide3-box .cn ._cn{
    width: 1.3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: absolute;
    z-index: 1;
    /* transition: all .3s; */
}
.slide3-box .cn:hover ._cn{
    width: 2.2rem;
}
.slide3-box .cn:hover ._cn .desc {
    width: 1.8rem;
    margin-top: .1rem;
    display: block;
    position: relative;
    z-index: 2;
}
.slide3-box .cn:hover .bg{
    width: 110%;
    height: 110%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    display: block;
    border-radius: .05rem;
}
.slide4-box{
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}
.slide4-box .tab{
    width: 9.8rem;
    display: flex;
    align-items: center;
    margin: .2rem 0;
    padding: 0 .1rem;
}
.slide4-box .tab .bn{
    width: .8rem;
    height: .3rem;
    border-radius: .15rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .13rem;
    margin-right: .1rem;
    color: #FFFFFF;
}
.slide4-box .tab .bn.active{
    border: .01rem solid #FFFFFF;
}
.slide4-box .lt{
    display: flex;
    align-items: center;
}
.slide4-box .lt-body{
    width: 2.3rem;
    height: 2.8rem;
    background: #FFFFFF;
    border-radius: .05rem;
    margin: 0 .1rem;
    padding: .2rem;
    display: flex;
    flex-direction: column;
    transition: all .3s;
    position: relative;
}
.slide4-box .lt-body .m{
    font-family: 'Source Han Sans SC', Arial, sans-serif;
    font-weight: bold;
    font-size: .28rem;
    color: #676767;
}
.slide4-box .lt-body .yy{
    font-weight: 400;
    font-size: .12rem;
    color: #665555;
}
.slide4-box .lt-body .c{
    color: rgba(0, 0, 0, 1);
    font-size: .14rem;
    margin-top: .2rem;
}
.slide4-box .lt-body .iinnd{
    width: 1.7rem;
    position: absolute;
    right: 0;
    bottom: 0;
}
.slide4-box .lt-body:hover{
    background: linear-gradient(180deg, #0D92DF, #42A94D);
}
.slide4-box .lt-body:hover .m, .slide4-box .lt-body:hover .yy, .slide4-box .lt-body:hover .c{
    color: #FFFFFF;
}
.slide4-box .lt-body .mr{
    display: block;
}
.slide4-box .lt-body .jh{
    display: none;
}
.slide4-box .lt-body:hover .mr{
    display: none;
}
.slide4-box .lt-body:hover .jh{
    display: block;
}
.slide4-box .chage{
    display: flex;
    align-items: center;
    justify-content: center;
    margin: .2rem 0;
}
.slide4-box .chage .mb{
    width: .4rem;
    height: .4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .12rem;
    margin: .6rem .1rem 0;
    opacity: .5;
    transition: all .3s;
}
.slide4-box .chage .mb .img{
    height: 100%;
}
.slide4-box .chage .mb:hover{
    opacity: 1;
}


/* ---- 响应式 ---- */
@media screen and (max-width: 767px) {
    .slide-title { font-size: .32rem; }
    .slide-desc  { font-size: .13rem; }
    .fullscreen-swiper .swiper-pagination { left: .3rem !important; }
    .slide-body  { padding-left: .3rem; }
}

@media screen and (max-width: 1439px) {

    .index-box {
        gap: .4rem;          /* 40px */
    }

    .index-box .logo {
        max-width: 2.6rem;   /* 260px */
    }

    .index-box .txt {
        font-size: .14rem;
    }
    .index-box .txt .num {
        font-size: .24rem;
        padding-left: .02rem;
    }
    .index-box .txt .n {
        top: -.01rem;
    }
}


@media screen and (max-width: 767px) {

    .index-box {
        gap: .6rem;          /* 30px */
        padding: 0 .3rem;    /* 15px 安全边距 */
    }

    .index-box .logo {
        height: 2rem;        /* 200px，固定，不随屏幕缩放 */
        max-width: none;
    }

    .index-box .logo img {
    }

    .index-box .txt{
        display: none;
    }
    .index-box .p_txt{
        display: block;
        margin-bottom: .1rem;
    }
    .fullscreen-swiper .swiper-pagination{
        bottom: .1rem !important;
        left: .1rem !important;
    }
    .slide-body{
        padding: 0;
    }
    .swiper-counter{
        bottom: .35rem !important;
        left: .1rem !important;
    }
    .slide-title, .slide-desc{
        text-align: center;
    }

    .bom-news{
        height: auto;
        background: rgba(27, 124, 173, .5);
        flex-direction: column;
        padding: .1rem 0 0;
    }
    .bom-news .item{
        width: 100%;
        margin: 0;
        overflow: hidden;
        padding: .05rem 0;
    }
    .bom-news .item .t{
        padding-left: .05rem;
    }
    .bom-news .line{
        display: none;
    }
    .bom-news .item .d{
        padding-right: .1rem;
    }
    .jtbox{
        margin-top: .3rem;
        margin-bottom: .2rem;
        padding: 0 .3rem 0 0;
        width: 100%;
        justify-content: flex-end;
    }

    .slide2-box{
        padding: 0;
        flex-direction: column;
        height: 100%;
    }
    .slide2-box .slide-title, .slide2-box .slide-desc{
        text-align: left;
    }
    .slide2-box .jj{
        flex: 1;
        padding: .5rem .2rem 0 ;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    .slide2-box .jj .mmb{
        display: flex;
        justify-content: center;
    }
    .slide2-box .jj .mm{
        font-size: .12rem;
    }
    .slide2-box .jj .mm .icon{
        width: .25rem;
        height: .25rem;
        margin-right: .1rem;
    }
    .slide2-box .jj .mm .icon img{
        width: 100%;
    }
    .slide2-box .tj{
        flex: 1;
        margin: 0;
        width: calc(100% - .4rem);
    }
    .slide2-box .tj .ii{
        flex: 1;
        font-size: .12rem;
        font-weight: normal;
    }
    .slide2-box .tj .ii span{
        font-size: .24rem;
        font-family: 'Source Han Sans SC', PingFang SC, sans-serif;
    }
    .slide2-box .tj .br{
        margin-top: .5rem;
    }

    .slide3-box{
        flex-wrap: wrap;
        height: calc(100% - 1.5rem);
        width: calc(100% - .4rem);
        margin-left: .2rem;
    }
    .slide3-box .cn{
        width: 50%;
        margin: 0;
        height: 50%;
    }
    .slide3-box .cn .img{
        height: .8rem;
        position: relative;
        z-index: 2;
    }
    .slide3-box .cn .img img{
        height: 100%;
    }
    .slide3-box .cn .text{
    }
    .slide3-box .cn .en{
    }
    .slide3-box .cn .desc, .slide3-box .cn .bg{
        display: none;
    }
    .slide3-box .cn ._cn{
        width: 1.3rem;
    }
    .slide3-box .cn:hover ._cn{
        width: 1.8rem;
    }
    .slide3-box .cn:hover ._cn .desc {
        font-size: .12rem;
        height: 1.3rem;
        overflow: hidden;
    }
    
    .slide4-box{
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
    }
    .slide4-box .tab{
        width: calc(100% - .4rem);
    }
    .slide4-box .tab .bn{
    }
    .slide4-box .tab .bn.active{
    }
    .slide4-box .lt{
        width: 100%;
        flex-wrap: wrap;
    }
    .slide4-box .lt-body{
        width: calc(50% - .3rem);
        height: 2.3rem;
        /* padding: 0; */
        margin: 0 0 .2rem .2rem;
    }
    .slide4-box .lt-body .iinnd{
        width: 1rem;
    }
    .slide4-box .chage{
        display: flex;
        align-items: center;
        justify-content: center;
        margin: .2rem 0;
    }
    .slide4-box .chage .mb{
        margin: .1rem .1rem 0;
        opacity: 1;
    }
}