/* 通用重置 & 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    max-width: 750px;
    margin: 0 auto;
    font-size: 50px;
}


a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

/* 头部 Banner */
.banner {
    position: relative;
    height: 6rem;
    /* 1074px / 50 */
    background: url("../img/top_bg.png") no-repeat center bottom;
    background-size: cover;
    overflow: hidden;
    color: #fff;
}

.logo {
    position: absolute;
    top: 0.4rem;
    /* 20px / 50 */
    left: 0.4rem;
    /* 20px / 50 */
    font-size: 0.48rem;
    /* 24px / 50 */
    font-weight: bold;
}

.back-btn {
    position: absolute;
    top: 0.4rem;
    /* 20px / 50 */
    right: 0.4rem;
    /* 20px / 50 */
    padding: 0.12rem 0.24rem;
    cursor: pointer;
    /* border-radius: 4px; */
}

.banner-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    width: 26rem;
    /* 1300px / 50 */
}

.banner-content h1 {
    font-size: 0.64rem;
    /* 32px / 50 - 顶部字体，>750px时显示100px */
    margin-bottom: 0.4rem;
    /* 20px / 50 */
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

.hexagon-group {
    display: flex;
    justify-content: center;
    gap: 0.2rem;
    /* 10px / 50 */
    flex-wrap: wrap;
}

.hexagon-group img {
    width: 7.5rem;
}

.hexagon {
    width: 1.6rem;
    /* 80px / 50 */
    height: 1.84rem;
    /* 92px / 50 */
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    overflow: hidden;
}

.hexagon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 活动介绍 */
.intro {
    background: linear-gradient(to bottom,
            #C6F0F7 0%,
            #C6F0F7 50%,
            #F2FDFF 62%,
            #F2FDFF 75%,
            #FFFFFF 87.5%);
    box-sizing: border-box;
    padding: .62rem .2rem 2.6rem;
    /* 143px 258px 358px / 50 */
    position: relative;
}

.intro h2 {
    text-align: center;
    font-size: 0.56rem;
    /* 28px / 50 */
    /* margin-bottom: 20px; */
    position: relative;
    text-align: center;
    display: flex;
    justify-content: center;
}

.intro::after {
    position: absolute;
    bottom: 0.8rem;
    /* 45px / 50 */
    content: "";
    background: url("../img/img_bottom.png") no-repeat center;
    background-size: cover;
    width: 100%;
    height: 1.46rem;
    /* 313px / 50 */
    left: 0;
    z-index: 2;
}



/* 页脚 */
.footer {
    padding: 0.4rem;
    /* 40px 130px 40px 78px / 50 */
    background-color: #08C4DF;
    color: #fff;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    /* gap: 70px; */
}

.footer-logo {
    font-size: 0.48rem;
    font-weight: bold;
    margin-right: .2rem;
    width: 1.4rem;
}

.copyright {
    flex: 1;
    font-size: 0.22rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #FFFFFF;
    line-height: 0.4rem;
}

.qrcodes {
    display: flex;
    margin-left: .2rem;
}

.qrcode-item {
    text-align: center;
    font-size: 0.2rem;
    color: #FFFFFF;
    line-height: 0.5rem;
}

.qrcode-item+.qrcode-item {
    margin-left: 0.4rem;
}

.qrcode-item img {
    width: 1rem;
    height: 1rem;
    margin-bottom: 0.1rem;
}

.header-nav {
    margin: 0 auto;
    width: 7rem;
}

.nav-info {
    font-size: 0.72rem;
    color: #000000;
    line-height: 0.86rem;
    margin-left: 1.24rem;
    margin-bottom: 0.14rem;
}

.time-source {
    color: #000000;
    line-height: 0.52rem;
    display: flex;
    margin-top: 0.27rem;
    font-size: .24rem;
    margin-left: 0;
    flex-wrap: wrap;
    line-height: .52rem;

}

.detail_line {
    background: url("../img/m-line.png") no-repeat center center;
    background-size: cover;
    height: 1px;
    position: relative;
}

.detail_line::after {
    position: absolute;
    background: url("../img/m-line-bar.png") no-repeat center center;
    background-size: cover;
    width: 1.4rem;
    height: .1rem;
    content: "";
    display: block;
    bottom: 0;
    left: 50%;
    margin-left: -0.7rem;
}

.flex-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.m-share {
    display: flex;
    justify-content: center;
    gap: .2rem;
    align-items: center;
    margin-top: .4rem;
    font-size: 0.3rem;
}


.size-box {
    display: flex;
}

.size-type {
    width: .34rem;
    height: .34rem;
    background: #08C4DF;
    border-radius: 50%;
    line-height: .44rem;
    margin-right: .1rem;
}


.detail-title {
    font-weight: 600;
    font-size: .64rem;
    color: #08C4DF;
    display: flex;
    justify-content: center;
    margin: 0.32rem;
}

video {
    width: 100%;
    display: block;
    margin: .48rem auto;
}

.time-source.big_size {
    font-size: .38rem
}

.detail-title.big_size {
    font-size: .88rem
}

.time-source.small_size {
    font-size: .22rem;
}

.detail-title.small_size {
    font-size: .22rem
}


.video_icon {
    display: flex;
    justify-content: center;
    text-align: center;
}

.video_icon img {
    width: 1rem;
    margin-left: 0.2rem;
}