/* 合作企业页面样式 - 修复版 */
html, body {
    height: auto;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    flex-direction: column;
    background-color: #F7F7F7;
}

/* 主内容区域 */
.partners-main {
    margin-top: 86px;
    flex: 1;
    position: relative;
    background-color: #F7F7F7;
    overflow: visible;
}

/* 展示区 */
.partners-showcase {
    position: relative;
    width: 100%;
    z-index: 1;
    padding-bottom: 60px; /* 确保底部有足够空间 */
}

.partners-banner-bg {
    position: relative;
    width: 100%;
    background-color: #ffffff;
    padding: 80px 0;
    min-height: calc(100vh - 86px - 150px); /* 动态计算最小高度 */
}

.partners-content {
    position: relative;
    z-index: 2;
    text-align: center;
    width: 100%;
    height: auto;
}

.partners-title {
    font-size: 30px;
    font-weight: 700;
    margin: 0 0 50px 0;
}

/* 合作伙伴容器 */
.partners-logos-container {
    width: 100%;
    max-width: 1136px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 3;
    height: auto;
}

/* 合作伙伴网格布局 */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.partner-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.partner-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.partner-item img {
    width: 120px;
    height: auto;
    margin-bottom: 10px;
    object-fit: contain;
}

.partner-item p {
    margin: 0;
    font-size: 14px;
    text-align: center;
    color: #333;
    font-weight: 500;
}

/* 分类标题 */
.partners-category h3 {
    font-size: 22px;
    color: black;
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
}

.partners-category h3 i {
    margin-right: 10px;
    font-size: 20px;
}

/* 联合实验室特殊样式 */
.partner-item .lab-info {
    font-size: 12px;
    color: #666;
    margin-top: 5px;
    line-height: 1.4;
}

/* 页脚样式 */
.footer {
    position: relative;
    width: 100%;
    background: #fff;
    padding: 20px 0;
    z-index: 10;
}

.footer .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.copyright {
    text-align: center;
    color: #666;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .partners-logos-container {
        max-width: 90%;
    }
}

@media (max-width: 992px) {
    .partners-title {
        font-size: 28px;
    }

    .partners-category h3 {
        font-size: 20px;
    }
}

@media (max-width: 768px) {
    .partners-main {
        margin-top: 60px;
    }

    .partners-banner-bg {
        padding: 60px 0;
        min-height: calc(100vh - 60px - 120px);
    }

    .partners-title {
        font-size: 24px;
        margin-bottom: 30px;
    }

    .partners-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }

    .partner-item img {
        width: 100px;
    }

    .partner-item .lab-info {
        font-size: 11px;
    }
}

@media (max-width: 576px) {
    .partners-banner-bg {
        padding: 40px 0;
    }

    .partners-title {
        font-size: 20px;
    }

    .partners-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 15px;
    }

    .partner-item {
        padding: 10px;
    }

    .partner-item img {
        width: 80px;
    }

    .partners-category h3 {
        font-size: 18px;
        margin: 30px 0 15px;
    }
}

@media (max-width: 480px) {
    .partners-title {
        font-size: 18px;
    }

    .partners-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }

    .partner-item p {
        font-size: 12px;
    }
}