.s_container {
    width: 100%;
    max-width: 100%;
    /* 限制最大宽度，避免拉伸过度 */
    margin: 0 auto;
    padding: 0 15px;
    /* background: #ff6600; */
    height: 600px;
    display: flex;
    /* 改为白色背景，更清晰 */
}


/* 扇形布局容器 - 核心：居中对齐，底部为扇形圆心 */

.fan-container {
    position: relative;
    width: 55%;
    /* background: #ea5514; */
    height: 400px;
    /* 增高容器，适配更大的扇形 */
    display: flex;
    justify-content: center;
    align-items: flex-end;
    margin-bottom: 20px;
}


/* 扇形项目 - 统一定位和变换原点 */

.fan-item {
    position: absolute;
    bottom: 0;
    /* 所有项目底部对齐圆心 */
    left: 55%;
    /* 先居中，再通过translateX调整 */
    width: 250px;
    /* 统一宽度，避免变形 */
    height: 370px;
    /* 统一高度 */
    transform-origin: center bottom;
    /* 所有项目绕底部中心旋转（扇形圆心） */
    border-radius: 8px 8px 0 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    overflow: hidden;
    transform: translateX(-50%) rotate(-90deg);
    opacity: 0;
    /* 裁剪超出部分 */
}


/* 图片样式：填满容器，避免变形 */

.fan-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* 保持图片比例，裁剪多余部分 */
    display: block;
    /* 消除图片默认间隙 */
}


/* 项目悬浮效果 */

.fan-item:hover {
    /* transform: translateY(-10px) !important; */
    /* 覆盖旋转值，保证悬浮效果 */
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
    z-index: 2;
    /* 悬浮时置顶 */
}


/* 项目标题 */

.fan-item-title {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 10px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: #fff;
    font-size: 14px;
    text-align: center;
    z-index: 1;
    /* 标题置顶 */
}

.fan-item-title h3 {
    font-weight: normal;
    font-size: 1.5rem;
    line-height: 1.8rem;
}


/* 核心：从左到右递进的扇形角度分布（180°均匀分配） */


/* 5个项目，从左(-90°)到右(90°)，间隔45°，形成规整扇形 */

.fan-item:nth-child(1) {
    --fan-rotate: -85deg;
    animation-delay: 0s;
}


/* 最左侧 */

.fan-item:nth-child(2) {
    --fan-rotate: -43deg;
    animation-delay: 0.12s;
}


/* 左二 */

.fan-item:nth-child(3) {
    --fan-rotate: 0deg;
    animation-delay: 0.24s;
}


/* 中间 */

.fan-item:nth-child(4) {
    --fan-rotate: 43deg;
    animation-delay: 0.36s;
}


/* 右二 */

.fan-item:nth-child(5) {
    --fan-rotate: 85deg;
    animation-delay: 0.48s;
}

@keyframes fan-unfold {
    to {
        opacity: 1;
        transform: translateX(-50%) rotate(var(--fan-rotate, 0deg));
    }
}

@media (prefers-reduced-motion: reduce) {
    .fan-item {
        opacity: 1;
        animation: none;
        transform: translateX(-50%) rotate(var(--fan-rotate, 0deg));
    }
}


/* 最右侧 */


/* 响应式适配：小屏缩小尺寸 */


/* 左侧内容 */

.fan-left {
    width: 45%;
    margin: 20px 0 5% 2%;
    display: flex;
}

.fan-ti {
    width: 50%;
    margin-right: 5%;
}

.fan-ti h1 {
    margin: 0;
    padding: 0;
    height: 4rem;
    background: #ea5514;
    border-top-left-radius: 1.2rem;
    border-top-right-radius: 1.2rem;
    font-weight: normal;
    color: #fff;
    font-size: 1.7rem;
    line-height: 4rem;
    padding-left: 1rem;
}

.fan-ti a {
    float: right;
    font-size: 1.2rem;
    font-weight: normal;
    color: #fff;
    padding-right: 1rem;
    text-decoration: none;
}

.fan-ti a:hover {
    text-decoration: none;
}

.fan-ti:last-child h1 {
    background: #036eb8;
}

.fan-ti:last-child {
    margin-right: 0;
}

.li-item {
    height: 450px;
    background-color: white;
    border-bottom-left-radius: 1.2rem;
    border-bottom-right-radius: 1.2rem;
    overflow: hidden;
    box-shadow: 0 0.4rem 1.2rem rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.li-cover-wrapper {
    width: 100%;
    height: 320px;
    overflow: hidden;
}

.video-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: cover;
    transition: transform 0.3s ease;
    cursor: default;
}

.li-title {
    margin: 8%;
    line-height: 2em;
    font-weight: normal;
}

.li-title a {
    color: #000;
    text-transform: none;
    float: left;
    display: flex;
    height: 5rem;
    /* line-height: 4.2rem; */
    align-items: center;
    padding-right: 0;
    font-size: 1.5rem;
}

.li-title a:hover {
    color: #C30D23;
    text-decoration: none;
    font-size: 1.5rem;
    padding-right: 0;
}


/* 鼠标悬停效果 */

.video-cover:hover {
    transform: translateY(-6px);
    box-shadow: 0 .8rem 2rem rgba(0, 0, 0, 0.12);
}

.li-item:hover .video-cover {
    transform: scale(1.05);
}

.li-item:hover .li-title {
    color: #C30D23;
}