.about-banner {
    width: 100%;
    max-height: 300px;
    overflow: hidden;
}

.about-banner img {
    width: 100%;
    min-height: 300px;
    object-fit: cover;
}

.about-nav {
    background: #fff;
    border-bottom: 1px solid #eee;
}

.about-nav .container-nav {
    display: flex;
    gap: 21px;
    justify-content: flex-end;
    padding: 22.5px;
    width: 70%;
    margin: 0 auto;
}

.container-nav li {
    background: url(../images/nav-d.png) no-repeat left center;
}

.container-nav li:first-child {
    background: none;
}

.about-nav a {
    color: rgba(153, 153, 153, 1);
    padding-left: 21px;
}

.about-nav .container-nav .active a {
    color: rgba(19, 99, 170, 1);
    font-weight: 600;
}

.about-nav .container-nav a:hover {
    color: rgba(19, 99, 170, 1);
    font-weight: 600;
}

.container {
    position: relative;
}

.breadcrumb {
    font-size: 14px;
    color: rgba(102, 100, 97, 1);
    background: url(../images/yuan.png) no-repeat left center;
    padding-left: 16px;
    position: absolute;
    top: -43px;
    left: 15%;
}

.breadcrumb a {
    color: rgba(102, 100, 97, 1);
}

@media (max-width: 991px) {
    .breadcrumb {
        display: none;
    }
}

.lsyg-title {
    color: rgba(51, 51, 51, 1);
    font-size: 24px;
    font-weight: 600;
    padding-top: 60px;
    padding-bottom: 30px;
}

/* ESG报告样式 */
.esg-content {
    padding-bottom: 40px;
}

.esg-reports {
    display: flex;
    gap: 18px;
    justify-content: flex-start;
    align-items: flex-start;
    flex-wrap: wrap;
    padding: 0 0 20px 0;
}

.report-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 160px;
    max-width: 260px;
    flex-shrink: 0;
    flex-basis: calc(20% - 14.4px);
}

.report-cover {
    position: relative;
    width: 100%;
    max-width: 180px;
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.report-cover:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.cover-image {
    position: relative;
    width: 100%;
    height: auto;
    overflow: hidden;
}

.cover-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.report-cover:hover .cover-image img {
    transform: scale(1.05);
}

.preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.preview-overlay img {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

.report-cover:hover .preview-overlay {
    opacity: 1;
}

.download-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.6);
    padding: 10px 12px;
    text-align: center;
    backdrop-filter: blur(10px);
    opacity: 0;
    transform: translateY(100%);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.report-cover:hover .download-info {
    opacity: 1;
    transform: translateY(0);
}

.download-link {
    color: white;
    text-decoration: none;
    font-size: 12px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.download-link:hover {
    color: rgba(19, 99, 170, 1);
    text-decoration: underline;
}

.report-title {
    color: rgba(51, 51, 51, 1);
    font-size: 14px;
    font-weight: 400;
    text-align: center;
    line-height: 1.4;
    margin-top: 8px;
    transition: color 0.3s ease;
}

.report-title:hover {
    color: rgba(19, 99, 170, 1);
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .esg-reports {
        gap: 15px;
    }
    
    .report-card {
        min-width: 180px;
        max-width: 220px;
        flex-basis: calc(20% - 12px);
    }
    
    .report-cover {
        max-width: 160px;
    }
    
    .cover-image {
        height: 220px;
    }
}

@media (max-width: 1024px) {
    .report-card {
        flex-basis: calc(25% - 13.5px);
        min-width: 200px;
        max-width: 240px;
    }
}

@media (max-width: 768px) {
    .esg-reports {
        gap: 12px;
        padding: 15px 0;
    }
    
    .report-card {
        flex-basis: calc(33.333% - 8px);
        min-width: 160px;
        max-width: 200px;
    }
    
    .report-cover {
        max-width: 140px;
    }
    
    .cover-image {
        height: 200px;
    }
    
    .lsyg-title {
        font-size: 20px;
        padding-top: 40px;
        padding-bottom: 20px;
    }
    
    .esg-content {
        padding: 20px 0;
    }
    
    .report-title {
        font-size: 12px;
    }
   
    .lsyg-title{
        font-size:20px;
        padding-top:30px;
    }
}

@media (max-width: 480px) {
    .esg-reports {
        gap: 10px;
        padding: 10px 0;
    }
    
    .report-card {
        flex-basis: calc(50% - 5px);
        min-width: 140px;
        max-width: 180px;
    }
    
    .report-cover {
        max-width: 120px;
    }
    
    .cover-image {
        height: 180px;
    }
    
    .download-info {
        padding: 8px 10px;
    }
    
    .download-link {
        font-size: 10px;
    }
    
    .report-title {
        font-size: 11px;
    }
    
    .preview-overlay img {
        width: 30px;
        height: 30px;
    }
}

/* 动画效果 */
.report-card {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 加载动画 */
.cover-image img:not([src]) {
    opacity: 0;
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    .report-card,
    .cover-image img,
    .preview-overlay,
    .report-cover {
        animation: none;
        transition: none;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 导航栏移动端样式 */
    .about-nav .container-nav {
        flex-direction: column;
        gap: 0;
        padding: 0;
        width: 100%;
        margin: 0;
    }

    .about-nav .container-nav li {
        background: none;
        border-bottom: 1px solid #eee;
    }

    .about-nav .container-nav li:first-child {
        background: none;
    }

    .about-nav a {
        padding: 15px 20px;
        display: block;
        text-align: center;
        font-size: 16px;
    }

    .about-nav .container-nav .active a {
        background: rgba(19, 99, 170, 0.1);
        border-left: 4px solid rgba(19, 99, 170, 1);
    }

    /* 面包屑导航移动端样式 */
    .breadcrumb {
        display: none;
    }
}

/* 超小屏幕样式 */
@media (max-width: 480px) {
    .about-nav a {
        padding: 12px 15px;
        font-size: 14px;
    }

}