/**
 * 关于我们页面样式文件
 * 包含Banner、面包屑导航、主要内容区域、优势展示、证书展示等所有样式
 * 作者：AI助手
 * 创建时间：2025-09-13
 */

/* ============ Banner样式 ============ */
.about-banner {
    position: relative;
    height: 40vh;
    min-height: 300px;
    background: linear-gradient(135deg, #09a2e6 0%, #0782c1 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
}

.banner-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.banner-subtitle {
    font-size: 20px;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.1);
    z-index: 1;
}

/* ============ 面包屑导航样式 - 新的class名字避免冲突 ============ */
.about-breadcrumb-section {
    background: #f8f9fa !important;
    padding: 20px 0 !important;
    border-bottom: 1px solid #e9ecef !important;
    width: 100% !important;
    box-sizing: border-box !important;
}

.about-breadcrumb-nav {
    display: flex !important;
    align-items: center !important;
    font-size: 14px !important;
    height: 24px !important;
    line-height: 24px !important;
    margin: 0 !important;
    padding: 0 !important;
}

.about-breadcrumb-item {
    color: #6c757d !important;
    text-decoration: none !important;
    transition: color 0.3s !important;
    height: 24px !important;
    line-height: 24px !important;
    display: inline-block !important;
    vertical-align: middle !important;
    margin: 0 !important;
    padding: 0 !important;
}

.about-breadcrumb-item:hover {
    color: #09a2e6 !important;
}

.about-breadcrumb-item.active {
    color: #333 !important;
    font-weight: 500 !important;
}

.about-breadcrumb-separator {
    margin: 0 10px !important;
    color: #6c757d !important;
    height: 24px !important;
    line-height: 24px !important;
    display: inline-block !important;
    vertical-align: middle !important;
    padding: 0 !important;
}

/* ============ 主要内容区域样式 - 完全居中 ============ */
.about-main-content {
    padding: 80px 0;
    background: #fff;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.about-content-container {
    max-width: 1600px;
    width: 100%;
    padding: 0 20px;
    margin: 0 auto;
}

/* ============ 公司介绍区域 - 全宽度 ============ */
.intro-section {
    width: 100%;
    margin-bottom: 60px;
}

.company-intro {
    margin-bottom: 40px;
}

.intro-title {
    font-size: 32px;
    font-weight: bold;
    color: #333;
    margin-bottom: 30px;
    text-align: left;
}

.intro-text {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    margin-bottom: 20px;
    text-align: justify;
}

/* ============ 媒体区域 - 视频和信息卡片并排 ============ */
.media-section {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
    width: 100%;
}

/* 视频区域样式 */
.video-area {
    width: 100%;
}

.video-container {
    position: relative;
    height: 400px;
    background: #000;
    border-radius: 15px;
    overflow: hidden;
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 15px;
}

/* ============ 信息卡片区域样式 ============ */
.info-area {
    width: 100%;
    position: static;
}

.startup-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    border: 1px solid #e9ecef;
}

.card-title {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 25px;
    text-align: left;
}

.startup-stats {
    list-style: none;
    padding: 0;
    margin: 0;
}

.stat-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 8px 0;
}

.stat-icon {
    color: #09a2e6;
    font-size: 12px;
    margin-right: 12px;
    width: 16px;
    flex-shrink: 0;
}

.stat-text {
    font-size: 16px;
    color: #333;
    line-height: 1.4;
}

/* ============ Our Advantages 模块样式 ============ */
.advantages-section {
    margin-top: 80px;
    width: 100%;
}

.advantages-title {
    font-size: 36px;
    font-weight: bold;
    color: #333;
    text-align: center;
    margin-bottom: 60px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    width: 100%;
}

.advantage-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
    background: #fff;
}

.advantage-icon {
    width: 100px;
    height: 100px;
    /*background: linear-gradient(135deg, #09a2e6, #0782c1);*/
    /*border-radius: 50%;*/
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.advantage-icon svg {
    color: white;
    width: 40px;
    height: 40px;
}

.advantage-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    line-height: 1.4;
    margin: 0;
}

/* ============ 企业资质证书展示模块 - 采用xinli项目设计 ============ */
.about-certificates-section {
    margin-top: 80px;
    width: 100%;
    padding: 0 20px;
}

.about-certificates-title {
    font-size: 36px;
    font-weight: bold;
    color: #333;
    text-align: center;
    margin-bottom: 60px;
}

/* 证书网格容器样式 */
.about-certificates-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
}

/* 证书项目容器 - 极简样式 */
.about-certificate-item {
    position: relative;
    overflow: hidden;
}

/* 证书包装器 */
.about-certificate-wrapper {
    position: relative;
    width: 100%;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 证书图片样式 - 完全无背景无边框 */
.about-certificate-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    object-position: center;
    background: transparent;
    border: none;
}

/* 图片加载状态 - 无背景 */
.about-certificate-image[data-loading="true"] {
    background: transparent;
}

.about-certificate-image[data-error="true"] {
    background: transparent;
}

/* ============ 响应式设计 ============ */

/* 平板端适配 (最大1024px) */
@media (max-width: 1024px) {
    .about-content-container {
        max-width: 900px;
        padding: 0 30px;
    }
    
    .intro-section {
        margin-bottom: 50px;
    }
    
    .media-section {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .info-area {
        position: static;
    }
}

/* 中等屏幕适配 (最大768px) */
@media (max-width: 768px) {
    .banner-title {
        font-size: 36px;
    }
    
    .banner-subtitle {
        font-size: 18px;
    }
    
    .about-main-content {
        padding: 60px 0;
    }
    
    .about-content-container {
        max-width: 100%;
        padding: 0 25px;
    }
    
    .intro-section {
        margin-bottom: 40px;
    }
    
    .media-section {
        gap: 30px;
    }
    
    .startup-card {
        padding: 25px;
    }
    
    .card-title {
        font-size: 20px;
    }
    
    .intro-title {
        font-size: 28px;
    }
    
    .advantages-section {
        margin-top: 60px;
    }
    
    .advantages-title {
        font-size: 30px;
        margin-bottom: 40px;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .advantage-item {
        padding: 15px;
    }
    
    .advantage-icon {
        width: 60px;
        height: 60px;
    }
    
    .advantage-icon svg {
        width: 30px;
        height: 30px;
    }
    
    .advantage-title {
        font-size: 14px;
    }
    
    .about-certificates-section {
        margin-top: 60px;
        padding: 0 30px;
    }
    
    .about-certificates-title {
        font-size: 30px;
        margin-bottom: 40px;
    }
    
    .about-certificates-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
        max-width: 800px;
    }
    
    .about-certificate-wrapper {
        height: 280px;
    }
}

/* 移动端适配 (最大480px) */
@media (max-width: 480px) {
    .about-banner {
        height: 35vh;
        min-height: 250px;
    }
    
    .banner-title {
        font-size: 28px;
    }
    
    .banner-subtitle {
        font-size: 16px;
    }
    
    .about-main-content {
        padding: 40px 0;
    }
    
    .about-content-container {
        padding: 0 15px;
    }
    
    .intro-section {
        margin-bottom: 30px;
    }
    
    .media-section {
        gap: 25px;
    }
    
    .startup-card {
        padding: 20px;
    }
    
    .intro-title {
        font-size: 24px;
    }
    
    .video-container {
        border-radius: 10px;
    }
    
    .video-container video {
        border-radius: 10px;
    }
    
    .advantages-section {
        margin-top: 40px;
    }
    
    .advantages-title {
        font-size: 24px;
        margin-bottom: 30px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .advantage-item {
        padding: 15px;
    }
    
    .advantage-icon {
        width: 50px;
        height: 50px;
    }
    
    .advantage-icon svg {
        width: 25px;
        height: 25px;
    }
    
    .advantage-title {
        font-size: 12px;
    }
    
    .about-certificates-section {
        margin-top: 40px;
        padding: 0 15px;
    }
    
    .about-certificates-title {
        font-size: 24px;
        margin-bottom: 30px;
    }
    
    .about-certificates-container {
        grid-template-columns: 1fr;
        gap: 20px;
        max-width: 100%;
    }
    
    .about-certificate-wrapper {
        height: 300px;
    }
}