/* 网站首页样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "微软雅黑", Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background-color: #fff;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* 页面横幅 */
.page-banner {
    height: 615px;
    background: url('../images/concept_header.jpg') no-repeat center center;
    background-size: cover;
    position: relative;
    display: flex;
    align-items: center;
    color: #fff;
    margin-top: 80px;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.banner-content-j {
    position: relative;
    z-index: 1;
    padding: 0 20px;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    text-align: center;
}
.banner-text p {
    margin: 0 auto!important;
}
.banner-title {
    font-size: 42px;
    margin-bottom: 20px;
    font-weight: normal;
}

.banner-subtitle {
    font-size: 20px;
    font-weight: normal;
    max-width: 651px;
    line-height: 1.5;
}

.breadcrumb {
    position: absolute;
    bottom: 20px;
    left: 20px;
    display: flex;
    align-items: center;
    font-size: 15px;
}

.breadcrumb a {
    color: #fff;
    margin: 0 5px;
}

.breadcrumb a:hover {
    color: #008cd6;
}

/* 经营理念内容 */
.philosophy-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 20px 60px 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-title {
    font-size: 36px;
    font-weight: normal;
    color: #000;
    margin-bottom: 20px;
}

.section-divider {
    height: 1px;
    background-color: rgba(0, 0, 0, 0.15);
    margin: 30px auto;
    width: 1090px;
    max-width: 100%;
}

.philosophy-content {
    max-width: 1094px;
    margin: 0 auto;
    font-size: 16px;
    line-height: 1.8;
    color: #333;
}

.philosophy-content p {
    margin-bottom: 20px;
    text-indent: 2em;
}

.philosophy-image {
    width: 100%;
    margin-top: 40px;
    text-align: center;
}

.philosophy-image img {
    width: 86%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* 发展历程样式 */
.timeline-section {
    background-color: #f8f8f8;
    padding: 50px 0;
}

.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: #2890d9;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-content {
    padding: 20px 30px;
    background-color: #fff;
    position: relative;
    border-radius: 6px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.timeline-year {
    font-size: 22px;
    font-weight: bold;
    color: #2890d9;
    margin-bottom: 10px;
}

.timeline-text {
    font-size: 16px;
    color: #666;
}

/* 动画效果 */
.animated {
    animation-duration: 1s;
    animation-fill-mode: both;
}

.slideInUp {
    animation-name: slideInUp;
}

@keyframes slideInUp {
    from {
        transform: translate3d(0, 100%, 0);
        visibility: visible;
        opacity: 0;
    }
    to {
        transform: translate3d(0, 0, 0);
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .banner-content-j {
        padding: 0 40px;
    }

    .philosophy-section {
        padding: 50px 40px;
    }
}

@media (max-width: 992px) {
    .page-banner {
        height: 500px;
    }

    .banner-title {
        font-size: 36px;
    }

    .banner-subtitle {
        font-size: 18px;
        max-width: 100%;
    }

    .philosophy-section {
        padding: 40px 30px;
    }

    .section-title {
        font-size: 32px;
    }

    .section-divider {
        width: 90%;
    }
}

@media (max-width: 768px) {
    .page-banner {
        height: 400px;
    }

    .banner-title {
        font-size: 28px;
    }

    .banner-subtitle {
        font-size: 16px;
    }

    .breadcrumb {
        font-size: 14px;
        bottom: 15px;
        left: 15px;
    }

    .philosophy-section {
        padding: 30px 20px;
    }

    .section-title {
        font-size: 28px;
    }

    .philosophy-content {
        font-size: 15px;
        line-height: 1.7;
    }

    .timeline::after {
        left: 31px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

    .timeline-item:nth-child(even) {
        left: 0;
    }

}

@media (max-width: 576px) {
    .page-banner {
        height: 300px;
    }

    .banner-title {
        font-size: 24px;
        margin-bottom: 15px;
    }

    .banner-subtitle {
        font-size: 14px;
    }

    .breadcrumb {
        font-size: 12px;
        bottom: 10px;
        left: 10px;
    }

    .philosophy-section {
        padding: 30px 15px;
    }

    .section-title {
        font-size: 24px;
    }

    .section-divider {
        margin: 20px auto;
    }

    .philosophy-content {
        font-size: 14px;
        line-height: 1.6;
    }

    .philosophy-content p {
        text-indent: 1em;
        margin-bottom: 15px;
        padding: 0 20px;
    }

    .timeline-item {
        padding-left: 50px;
        padding-right: 15px;
    }
}

@media (max-width: 400px) {
    .page-banner {
        height: 250px;
    }

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

    .banner-subtitle {
        font-size: 13px;
    }

    .breadcrumb {
        font-size: 11px;
    }
}