/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

div {
    margin: 0;
    padding: 0;
}

.h4, .h5, .h6, h4, h5, h6 {
    margin: 0;
}


html, body {
    font-size: 14px;
    /* 或你需要的标准字体大小 */
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    text-size-adjust: 100%;
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif !important;
}

/* 版心容器 */
.wrapper {
    width: 100%;
    margin: 0 auto;
}

.center {
    width: 1600px;
    margin: 0 auto;
}

/* 导航容器 */
.nav-container {
    width: 1200px;
    margin: 0 auto;
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 头部样式 */
.header {
    width: 100%;
    height: 60px;
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
    box-shadow: none;
}

/* 顶部信息条样式 */
.top-bar {
    width: 100%;
    height: 38px;
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
}

.top-container {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 30px;
}

.top-image img {
    width: 340px;
    height: 40px;
    display: block;
}

.top-info {
    font-size: 14px;
    color: #666;
}

.platform {
    color: #333;
    font: normal normal normal 16px / 20px "Microsoft YaHei";
    text-decoration: none;
}

.separator {
    margin: 0 8px;
    color: #e5e5e5;
}


/* 主要内容区域 */
.main {
    background: url('../img/top-bg.png') no-repeat center top;
    background-size: 100% auto;
    /* background-size: auto 1836px; */
    min-height: 1836px;
}

.enter-btn a{position: relative;}
.enter-image {
    height: 140px;
    width: 288px;
}

.enter-btn {
    /* padding-top: 560px; */
    padding-top: 21.875vw;
    padding-left: 40px;
}
/* .enter-btn .enter-image:first-child{
    margin-right: 20px;
} */
 .enter-btn a:first-child{
    margin-right: 20px;
}
.enter-btn a span{position: absolute;
    left: 39%;
    bottom: -50px;
    color: #ccc;}

/* 简介 */
.hdjj {
    font-weight: 700;
}

.intro-setion {
    padding-top: 150px;
}

.title-ys .hdjj {
    display: inline-block;
    width: 310px;
    font-size: 36px;
    color: #000;
    text-align: center;
    background: url('../img/title-bg.png') no-repeat center;
}

.title-ys {
    text-align: center;
}

.intro-setion .notify {
    text-align: center;
    margin-top: 22px;
    margin-bottom: 28px;
}

.intro-setion .notify a {
    text-align: center;
    font-size: 16px;
    color: #000;
    margin-top: 18px;
}

.intro-setion .intro-wz {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    padding: 45px 310px;
    background: url('../img/intro-bg.png') no-repeat 100% 100%;
}

.intro-setion .intro-wz .intro-text {
    font-size: 16px;
    color: #000;
    text-decoration: underline;
    text-decoration-style: dotted;
    text-decoration-color: #d0e5e3;
    text-align: justify;
    text-underline-position: under;
    line-height: 47px;
    text-underline-offset: 4px;
}

.intro-setion .nei-wz {
    font-size: 18px;
    color: #4b8e8d;
}

.intro-setion .four-first {
    padding: 0 140px;
    margin-top: 34px;
}

.intro-setion .four-first {
    display: flex;
    justify-content: space-between;
    gap: 0;
    padding: 0 140px;
}

.intro-setion .four-first .each-part {
    position: relative;
    /* padding: 20px 20px !important;
    width: 283px;
    height: 145px; */
    margin-left: 0;
    margin-right: 0;
    padding-left: 0;
    padding-right: 0;
    padding: 20px 15px !important;
    width: 305px;
    height: 145px;
}

.intro-setion .four-first .each-part:nth-child(2n+1) {
    background-color: #fef8e4;
}

.intro-setion .four-first .each-part:nth-child(2n) {
    background-color: #e3f2ef;
}

.intro-setion .four-first .each-part {
    border-radius: 5px;
}

.intro-setion .four-first .each-part h3 {
    color: #4b8e8d;
    margin-bottom: 10px;
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    font-weight: 700;
    margin-top: 5px;
    font-size: 18px;
}

.intro-setion .four-first .each-part .first_t {
    position: absolute;
    top: -10px;
    color: #4b8e8d;
    font-size: 16px;
}

.intro-setion .four-first .each-part .first_t::before {
    content: '';
    position: absolute;
    left: -32px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    background: url('../img/quan.png') no-repeat center center;
    background-size: contain;
}

.intro-setion .four-first .each-part .wz {
    font-size: 16px;
    color: #000;
    line-height: 24px;
    text-align: justify;
    font-family: 'Microsoft YaHei';
}

/* 备课资源 */
.bszy-setion {
    margin-top: 150px;
}

.bszy-setion .bkzy {
    background: url('../img/bs-bg.png')no-repeat;
}

.bszy-setion .title-ys {
    padding-bottom: 65px;
}

.bszy-setion .bkzy {
    display: flex;
    justify-content: center;
    /* align-items: stretch; */
    align-items: flex-start; /* 顶部对齐 */
    gap: 0;
}

.bszy-setion .bkzy .each-zy {
    flex: 1 1 0;
    min-width: 0;
    max-width: none;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* 顶部对齐 */
    /* justify-content: center; */
    align-items: center;
}

.bszy-setion .bkzy .right-line {
    width: 0;
    flex: none;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.bszy-setion .bkzy .right-line img {
    width: 32px;
    height: 120px;
    display: block;
}

.bszy-setion .bkzy .right-line {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 0;
}

.bszy-setion .bkzy .right-line img {
    width: 6px;
    height: auto;
    display: block;
}

.bszy-setion .bkzy .each-zy {
    text-align: center;
    color: #fff;
    padding-top: 102px;
    padding-bottom: 95px;
}

.bszy-setion .bkzy .each-zy2 {
    padding-top: 68px;
}

.bszy-setion .bkzy .each-zy h3 {
    font-size: 24px;
}

.bszy-setion .bkzy .each-zy p {
    color: #aeeef3;
    font-size: 16px;
    padding: 34px 34px;
}

.bszy-setion .bkzy .each-zy a {
    background: url('../img/by.png') no-repeat center center;
    background-size: 100% 100%;
    display: inline-block;
}
/* .each-zy:first-child */
.bszy-setion .bkzy .each-zy:first-child a{
    background: url(../img/by-no.png) no-repeat center center;
    background-size: 100% 100%;
    display: inline-block;
}
.bszy-setion .bkzy .each-zy span {
    color: #2e8a86;
    font-size: 16px;
    padding: 8px 40px;
    display: inline-block;
}

.bszy-setion .bkzy .each-zy .zy-more {
    font-size: 18px;
    color: #fff;
    padding: 0 0 8px 0;
}

.bszy-setion .bkzy .each-zy .span-bao {
    color: #9fd9d6;
    font-size: 14px;
    padding: 0;
}

/* 活动流程 */
.hdlc-setion .title-ys {
    padding: 120px 0 70px 0;
}

/* 往届回顾 */
.wjhg-setion .wjhg {
    background: url('../img/wq-bg1.png') no-repeat center center;
    background-size: 100% 100%;
    padding-top: 70px;
    padding-bottom: 70px;
}

.wjhg-setion .title-ys {
    padding: 127px 0 80px 0;
}

.timeline {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    width: 1600px;
    margin: 0 auto;
    padding-bottom: 60px;
}

.timeline-item1 {
    /* flex: 1; */
    background: url(../img/timeline1.png) no-repeat left top;
    background-size: 100% 100%;
    width: 546px;
}

.timeline-item2 {
    background: url(../img/timeline2.png) no-repeat left top;
    background-size: 100% 100%;
    width: 480px;
}

.timeline-item3 {
    background: url(../img/timeline3.png) no-repeat left top;
    background-size: 100% 100%;
    width: 570px;
}

.timeline .timeline-title {
    color: #fff;
    font-size: 24px;
    font-weight: 700;

}

.timeline-item1 {
    padding-left: 113px;
}

.timeline-item2 {
    padding-left: 45px;
}

.timeline-item3 {
    padding-left: 45px;
}

/* .timeline-item3 .timeline-title {
    margin-bottom: 34px;
} */

.timeline-btn a {
    display: inline-block;
    padding: 5px 11px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border: 1px solid #fff;
    text-decoration: none;
    margin-top: 15px;
    margin-bottom: 30px;
    margin-right: 11px;
    font-size: 16px;
    font-family: "Microsoft YaHei";
}
/* 分割线的显示 */
.moble-show{display: none;}
.pc-show{display: block;}

/* 1600px及以上大屏幕自适应 */
@media screen and (max-width: 1600px) {
    .center {
        max-width: 1600px;
        width: 90%;
        margin: 0 auto;
        padding-left: 48px;
        padding-right: 48px;
    }
    .title-ys .hdjj {background-size: 100% 83%;}

    /* 按钮 */
    .enter-image {
        width: 16vw;
        height: 7vw;
    }
    .intro-setion {
    padding-top: 9.375vw;
    }
    .intro-setion .four-first .each-part .wz {
    font-size: 1vw;}
    .intro-setion .four-first .each-part h3 {font-size: 1.125vw;}
    .intro-setion .four-first .each-part {
        position: relative;
        padding: 20px 20px !important;
        width: 283px;
        height: 145px;
    }
    .intro-setion .four-first .each-part .first_t {font-size: 1vw;}

    .enter-btn {
        padding-top: 25vw;
    }
    .title-ys .hdjj {
        display: inline-block;
        width: 19.375vw;
        font-size: 2.25vw;
    }
    .enter-btn a span {
    position: absolute;
    left: 33%;
    bottom: -2.5vw;
    color: #ccc;
    font-size: 1vw;
}

    .intro-setion .four-first {
        gap: 20px;
        padding: 0 30px;
    }

    .bszy-setion .bkzy .each-zy h3 {
        font-size: 1.25vw;
    }

    .bszy-setion .bkzy .each-zy .zy-more {
        font-size: 0.94vw;
    }

    .bszy-setion .bkzy .each-zy p {
        font-size: 0.83vw;
    }

    .bszy-setion .bkzy .each-zy span {
        font-size: 0.83vw;
    }

    .bszy-setion .bkzy .each-zy {
        text-align: center;
        color: #fff;
        padding-top: 5.2vw;
        padding-bottom: 4.95vw;
    }

    .bszy-setion .bkzy .each-zy p {
        padding: 1.77vw 1.77vw;
    }

    .bszy-setion .bkzy {
        background-size: 100% 100%;
    }
    .intro-setion .intro-wz{padding: 45px 30px;}
    
    /* 往届回顾 */
    .wjhg-setion .wjhg {
        background: url('../img/wq-bg1.png') no-repeat center center;
        background-size: 100% 100%;
        padding-top: 4.375vw;
        padding-bottom: 0;
    }

    .wjhg-setion .title-ys {
        padding: 127px 0 80px 0;
    }

    .timeline {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        position: relative;
        width: 100%;
        margin: 0 auto;
        padding-bottom: 60px;
    }

    .timeline-item1 {
        /* flex: 1; */
        background: url(../img/timeline1.png) no-repeat left top;
        background-size: 100% 100%;
        width: 34.125vw;
    }

    .timeline-item2 {
        background: url(../img/timeline2.png) no-repeat left top;
        background-size: 100% 100%;
        width: 30vw;
    }

    .timeline-item3 {
        background: url(../img/timeline3.png) no-repeat left top;
        background-size: 100% 100%;
        width: 35.625vw;
    }

    .timeline .timeline-title {
        color: #fff;
        font-size: 1.5vw;
        font-weight: 700;

    }

    .timeline-item1 {
    padding-left: 7.0625vw;
    }

    .timeline-item2 {
    padding-left: 2.8125vw;
    }

    .timeline-item3 {
    padding-left: 2.8125vw;
    }

    .timeline-item3 .timeline-title {
        margin-bottom: 2.125vw;
    }

    .timeline-btn a {
        display: inline-block;
        padding: 5px 11px;
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.15);
        color: #fff;
        border: 1px solid #fff;
        text-decoration: none;
        margin-top: 15px;
        margin-bottom: 30px;
        margin-right: 11px;
        font-size: 16px;
        font-family: "Microsoft YaHei";
    }

    /* 流程图 */
    .hdlc img {
        width: 100%;
    }
}

/* 平板设备响应式样式 (768px - 1199px) */
@media screen and (max-width: 1200px) {
.top-container {
    width: 100%;
    height: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 30px;
    padding: 0 15px;
}
.title-ys .hdjj {background-size: 100% auto;}
.intro-setion { padding-top: 7.375vw;}
.bszy-setion {padding-top: 7.375vw;}
.intro-setion .four-first .each-part { height: 15.5vw;  }
.hdlc-setion .title-ys {padding: 7.375vw 0 4.5vw 0;}
.wjhg-setion .title-ys {padding: 7.375vw 0 4.5vw 0;}
.bszy-setion{margin-top: 0;}
}

@media screen and (max-width: 900px) {
.intro-setion .four-first .each-part { height: 19.5vw;  }
}

@media screen and (max-width: 767px) {
.main {
    background: url(../img/mobile-bg.png) no-repeat center top;
    background-size: 100% auto;
    /* background-size: auto 1836px; */
    /* min-height: 1836px; */
}
    /* 分割线的显示 */
   .moble-show{display: block;}
   .bszy-setion .bkzy .right-line .pc-show{display: none;}

    .top-container {width: 100%;}
    .center {
        width: 100%;
        margin: 0 auto;
        padding-left: 15px;
        padding-right: 15px;
    }
    .intro-setion .intro-wz{padding:15px 5px;background-size: 100% 100%;}
    .title-ys .hdjj {font-size: 0.35rem;width: 3rem; }
    .intro-setion .notify {
    text-align: center;
    margin-top: 0.22rem;
    margin-bottom: 0.28rem;}
    .intro-setion .notify a {
    text-align: center;
    font-size: 0.25rem;
    color: #000;
    margin-top: 0.18rem;}
    .notify a img{width: 0.3rem;}
    .title-ys .hdjj {
    display: inline-block;
    width: 3.1rem;
    background: url(../img/title-bg.png) no-repeat center;
    background-size: 100%;}
    .intro-setion .intro-wz .intro-text {line-height: 30px;}
    .bszy-setion .bkzy .each-zy .span-bao{font-size: 0.20rem;}
    .intro-setion .intro-wz .intro-text {font-size: 0.23rem;}
    .intro-setion .nei-wz {font-size: 0.25rem;}
    .intro-setion .intro-wz {
        background-image: url(../img/intro_top.png), /* 上方图片 */ url(../img/intro_bottom.png);
        background-position: center top, /* 上方图片靠顶部居中 */ center bottom;
        background-repeat: no-repeat;
        background-size: 100% auto, 100% auto;
        background-color: #ecf9f6;
        padding: 2rem 1rem;
    }
    .enter-btn a span {
    position: absolute;
    left: 42%;
    bottom: 0.15rem;
    color: #ccc;
    font-size: 0.20rem;
}
    /* 四个首次 */
    .intro-setion .four-first {display: block;}
    .intro-setion .four-first .each-part {
        position: relative;
        padding: 0.2rem !important;
        width: 100%;
        height: 1.5rem;
        margin-bottom: 0.4rem;
    }
    .intro-setion .four-first .each-part .first_t::before{left: -27px;}
    .intro-setion .four-first .each-part .first_t {
        font-size: 0.23rem;
    }
    .intro-setion .four-first .each-part .first_t {
        padding-left: 5px;
    }
    .intro-setion .four-first .each-part h3 {
        font-size: 0.25rem;
    }
    .intro-setion .intro-wz{padding: 0.2rem 0.3rem;}
        .intro-setion .four-first .each-part .wz {
        font-size: 0.23rem;line-height: 0.3rem;
    }
    .intro-setion .four-first .each-part h3{margin:0.1rem 0px 0.1rem 0px;}
    .bszy-setion {margin-top: 1rem;}
    .bszy-setion .title-ys {padding-bottom: 0.5rem;}
    .bszy-setion .bkzy {display: block;}
    .bszy-setion .bkzy .each-zy:nth-child(1),
    .bszy-setion .bkzy .each-zy2 {
        border-bottom: 3px dashed #68a8ac;
    }
    .bszy-setion .bkzy .each-zy3{padding-bottom: 1.2rem;}
    .bszy-setion .bkzy .each-zy h3 { font-size: 0.28rem;}
    .bszy-setion .bkzy .each-zy p {font-size: 0.23rem;}
    .bszy-setion .bkzy .each-zy span {
    color: #2e8a86;
    font-size: 0.23rem;
    padding: 0.1rem 0.4rem;
    display: inline-block;
    }
    .right-line img{transform: rotate(180deg);}
    .bszy-setion .bkzy .each-zy .zy-more {
        font-size: 0.24rem;
    }
    .bszy-setion .bkzy .right-line .mobile-show{width: 100%;height: 6px;}
    .hdlc-setion {margin-top: 1rem;}
    .hdlc-setion .title-ys {padding-bottom: 0.5rem;padding-top:0;}

    /* 往期回顾 */
    .wjhg-setion{margin-top: 1rem;}
    .wjhg-setion .title-ys {padding-bottom: 0.5rem;padding-top:0;}
    .timeline { display: block;}
    .timeline-item1{padding-left:1rem;width: 100%;margin-bottom: 0.5rem;background: url(../img/timeline2.png) no-repeat left top;background-size: 100% 100%;}
    .timeline-item2{padding-left:1rem;width: 100%;margin-bottom: 0.5rem;}
    .timeline-item3{padding-left:1rem;width: 100%;margin-bottom: 0.5rem;}
    .timeline .timeline-title { font-size: 0.28rem;}
    .timeline-btn a {font-size: 0.24rem;margin-top: 0.15rem;margin-bottom: 0.3rem;}
    .wjhg-setion .wjhg {padding-top: 1rem;}
    .timeline {padding-bottom: 1rem;}

    /* 入口 */
    .enter-image {
        width: 2.2rem;
        height: 1rem;
    }
    .enter-btn {
        padding-top: 7rem;
        text-align: center;
    }
    .enter-btn{padding-left: 0;}
    /* .enter-btn .enter-image:first-child {margin-right: 0px;} */
    .enter-btn {
    display: flex;          /* 使用flex布局 */
    gap: 15px;              /* 中间间距15px */
    width: 100%;            /* 宽度占满父容器 */
    box-sizing: border-box; /* 确保padding不影响总宽度 */
    }

    .enter-btn a {
        flex: 1;                /* 两个a标签各占一半宽度 */
        display: block;         /* 让a标签可以自适应内容 */
    }

    .enter-btn .enter-image {
        width: 100%;            /* 图片宽度充满a标签 */
        height: auto;           /* 保持图片原有比例 */
        display: block;         /* 去除图片底部可能出现的空白 */
    }
.enter-btn .enter-image:first-child {margin-right: 0px;}
.enter-btn a:first-child{margin-right: 0px;}


}


/* 超小屏幕设备 (375px以下) */
@media screen and (max-width: 375px) {
    .description-text {
        font-size: 14px;
        line-height: 24px;
    }

    .title-text {
        font-size: 16px;
    }

    .top-info {
        font-size: 12px;
    }
}

/* intro-wz 居中，intro-text 两端对齐、微软雅黑字体、下划线、下划线紧邻文字、每行 30px 间距 */
.intro-wz {
    display: flex;
    justify-content: center;
    align-items: center;
}

.intro-text {
    text-align: justify;
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    text-decoration: underline;

}

@media screen and (max-width: 600px) {
    .bszy-setion .bkzy .right-line img {
        width: 100% !important;
        height: 6px !important;
        display: block;
         object-fit: cover;
        /* transform: rotate(180deg); */
    }
}