/*author: 葉研万事屋*/
/*BilibiliSpace: https://space.bilibili.com/3546741129349750*/
/*QQGroup: 1056692175*/
.about-us-page-5 {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.character-container-5 {
    position: absolute;
    left: 0;
    top: 0;
    width: 50%;
    height: 100%;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    z-index: 1;
}

.character-image-5 {
    max-height: 95%;
    object-fit: contain;
    transition: opacity 0.5s ease-in-out;
}

.character-image-5.fade {
    opacity: 0;
}

.content-container-5 {
    position: absolute;
    right: 0;
    top: 0;
    width: 60%;
    height: 100%;
    padding: 80px 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-sizing: border-box;
    z-index: 2;
}

.title-container-5 {
    position: relative;
    margin-bottom: 30px;
}

.title-background-5 {
    position: absolute;
    top: 4%;
    left: 38.6%;
    z-index: -1;
    height: 65px;
}

.main-title-5 {
    font-family: 'SourceHanSemiBold', serif;
    font-size: 36px;
    color: #fff;
    text-align: center;
    margin: 0;
    position: relative;
    z-index: 2;
    text-shadow: 0 0 10px black, 0 0 10px black;
}

.subtitle-container-5 {
    position: relative;
    margin-bottom: 30px;
}

.subtitle-5 {
    font-family: 'SourceHanSemiBold', serif;
    font-size: 42px;
    color: #fff;
    text-align: center;
    margin: 0 0 15px 0;
    white-space: nowrap;
}

.subtitle-line-5 {
    width: 95%;
    height: 2px;
    background: linear-gradient(to right, transparent, #a98553, transparent);
    margin: 0 auto;
}

.description-5 {
    font-family: 'SourceHan', serif;
    font-size: 26px;
    color: #fff;
    line-height: 1.6;
    text-align: center;
    margin-bottom: 90px;
}

.buttons-container-5 {
    display: flex;
    justify-content: space-around;
}

.button-icon-container-5 {
    width: 95px;
    height: 90px;
    display: flex;
    align-content: center;
    flex-direction: column;
    flex-wrap: wrap;
    justify-content: flex-end;
    align-items: center;

}

.button-item-5 {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
}

.button-background-5 {
    position: relative;
    width: 240px;
    height: 66px;
    margin-bottom: 15px;
}

.button-gradient-bg-5 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    border-top: 2px solid #a98553;
    border-bottom: 2px solid #a98553;
    box-sizing: border-box;
    /* 使用 mask 实现从中心向两侧渐变透明 */
    -webkit-mask-image: linear-gradient(to right, transparent 0%, rgba(255,255,255,1) 20%, rgba(255,255,255,1) 80%, transparent 100%);
    mask-image: linear-gradient(to right, transparent 0%, rgba(255,255,255,1) 20%, rgba(255,255,255,1) 80%, transparent 100%);
    mask-size: 100% 100%;
    mask-repeat: no-repeat;
}

.button-title-bg-5 {
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translate(-50%, 0);
    object-fit: cover;
    z-index: 1;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.button-text-5 {
    font-size: 36px;
    color: white;
    font-family: 'SourceHan', serif;
    position: absolute;
    z-index: 2;
    margin-bottom: 15px;
    text-align: center;
    top: 56.5%;
    text-shadow: 0 0 6px black, 0 0 6px black, 0 0 6px black;
}

.button-icon-5 {
    z-index: 3;
}

/* 社长信箱按钮 */
.button-item-5:nth-child(1) .button-icon-5 {
    width: 81px;
    height: 69px;
}

/* 主播待遇按钮 */
.button-item-5:nth-child(2) .button-icon-5 {
    width: 77px;
    height: 77px;
}

/* 社团规范按钮 */
.button-item-5:nth-child(3) .button-icon-5 {
    width: 73px;
    height: 83px;
}

/* 鼠标悬停效果 */
.button-item-5:hover .button-title-bg-5 {
    opacity: 1;
}

/* 星星装饰容器 */
.button-stars-container-5 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

/* 星星装饰基础样式 */
.button-star-5 {
    position: absolute;
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* 鼠标悬停时星星变为不透明 */
.button-item-5:hover .button-star-5 {
    opacity: 1;
}

/* 社长信箱按钮的星星 */
.button-star-5.star-mail-1 {
    top: -1%;
    left: 23%;
    width: 56px;
    height: 56px;
    opacity: 0.5;
}

.button-star-5.star-mail-2 {
    top: 29%;
    right: 24%;
    width: 37px;
    height: 37px;
    opacity: 0.3;
}

/* 主播待遇按钮的星星 */
.button-star-5.star-treatment-1 {
    top: -5%;
    left: 23%;
    width: 56px;
    height: 56px;
    opacity: 0.5;
}

.button-star-5.star-treatment-2 {
    top: 15%;
    right: 26%;
    width: 38px;
    height: 38px;
    opacity: 0.3;
}

/* 社团规范按钮的星星 */
.button-star-5.star-norms-1 {
    top: -9%;
    left: 25%;
    width: 56px;
    height: 56px;
    opacity: 0.5;
}

.button-star-5.star-norms-2 {
    top: 7%;
    left: 23%;
    width: 38px;
    height: 38px;
    opacity: 0.3;
}