* {
    margin: 0;
    padding: 0;
    /*box-sizing: border-box;*/
    font-family: "微软雅黑", "思源黑体","pingfang", sans-serif;
}

body {
    background-color: #F5F7FA;
    color: #666666;
    font-size: 14px;
    line-height: 1.5;
    padding-top: 60px; /* 给固定导航栏留空间 */
}

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

/* 容器样式 */
.container {
    width: 1440px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (max-width: 1440px) {
    .container {
        width: 100%;
    }
}

/* 动画基础类 */
.animate-fade {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-fade.active {
    opacity: 1;
    transform: translateY(0);
}

.animate-delay-1 {
    transition-delay: 0.1s;
}

.animate-delay-2 {
    transition-delay: 0.2s;
}

.animate-delay-3 {
    transition-delay: 0.3s;
}

/* 1. 顶部导航栏 */
.header-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background-color: #FFFFFF;
    border-bottom: 1px solid #F2F2F2;
    z-index: 999;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.nav-logo {
    width: 120px;
    height: 40px;
    background-color: #1E88E5;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 16px;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li {
    margin-left: 30px;
}

.nav-menu a {
    color: #333333;
    font-size: 16px;
    font-weight: 400;
    padding: 5px 0;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.nav-menu a:hover {
    color: #1E88E5;
    border-bottom-color: #1E88E5;
    transform: translateY(-2px);
}

.menu-btn {
    display: none;
    width: 24px;
    height: 24px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: #FFFFFF;
        flex-direction: column;
        border-bottom: 1px solid #F2F2F2;
        animation: menuFade 0.3s ease;
    }

    @keyframes menuFade {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    .nav-menu li {
        margin: 0;
        padding: 15px 20px;
        border-top: 1px solid #F2F2F2;
    }

    .menu-btn {
        display: block;
    }
}

/* 2. 首屏Banner */
.banner {
    width: 100%;
    height: 500px;
    background: url("/static/image/banner1.jpg") center center no-repeat;
    background-size: cover;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.banner::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(30, 136, 229, 0.7), rgba(76, 175, 80, 0.11));
    animation: bgMove 15s linear infinite;
}

@keyframes bgMove {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.banner-content {
    position: relative;
    z-index: 2;
    color: #FFFFFF;
    animation: bannerFade 1s ease forwards;
    opacity: 0;
}

@keyframes bannerFade {
    0% {
        opacity: 0;
        transform: translateX(-30px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.banner-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.banner-tags {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.banner-tag {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
    backdrop-filter: blur(5px);
}

.banner-desc {
    font-size: 18px;
    margin-bottom: 30px;
}

.banner-btns {
    display: flex;
    gap: 20px;
}

.banner-btn {
    width: 160px;
    height: 44px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #1E88E5;
    color: #FFFFFF;
    border: none;
}

.btn-primary:hover {
    background-color: #1976D2;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(30, 136, 229, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: #FFFFFF;
    border: 2px solid #FFFFFF;
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.2);
}

@media (max-width: 768px) {
    .banner {
        height: 300px;
    }

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

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

    .banner-btn {
        width: 120px;
        font-size: 14px;
    }
}

/* 3. 核心业务区 */
.business {
    padding: 60px 0;
}

.section-title {
    font-size: 24px;
    color: #333333;
    font-weight: 600;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: #1E88E5;
    border-radius: 3px;
    animation: titleLine 1s ease forwards;
    width: 0;
}

@keyframes titleLine {
    to {
        width: 60px;
    }
}

.business-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.business-card {
    width: 280px;
    height: 380px;
    background-color: #FFFFFF;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    padding: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all 0.5s ease;
}

.business-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.1);
}

/* expert类默认隐藏顶部边框，悬停时显示 */
.business-card.expert {
    border-top: 4px solid transparent;
    transition: border-color 0.3s ease, transform 0.5s ease, box-shadow 0.5s ease;
}

.business-card.expert:hover {
    border-top-color: #1E88E5;
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: #F5F7FA;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.business-card:hover .card-icon {
    background-color: #1E88E5;
}

.business-card:hover .card-icon svg {
    stroke: #FFFFFF;
}

.card-icon svg {
    width: 30px;
    height: 30px;
    stroke: #1E88E5;
}

.card-title {
    font-size: 20px;
    color: #333333;
    font-weight: 600;
    margin-bottom: 20px;
}

.card-tag {
    font-size: 12px;
    color: #1E88E5;
    background-color: rgba(30, 136, 229, 0.1);
    padding: 3px 10px;
    border-radius: 15px;
    margin-bottom: 15px;
}

.card-list {
    list-style: none;
    margin-bottom: 30px;
    flex: 1;
    text-align: left;
}

.card-list li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.card-list li::before {
    content: "●";
    color: #1E88E5;
    position: absolute;
    left: 0;
}

.card-btn {
    width: 120px;
    height: 36px;
    border: 1px solid #1E88E5;
    color: #1E88E5;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.card-btn:hover {
    background-color: #1E88E5;
    color: #FFFFFF;
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .business-card {
        width: 100%;
        margin: 0 20px;
    }
}

/* 4. 解决方案介绍区 */
.solutions {
    padding: 60px 0;
    background-color: #FFFFFF;
}

.solution-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    align-items: center;
}

.solution-text {
    flex: 1;
    min-width: 300px;
}

.solution-title {
    font-size: 22px;
    color: #333333;
    margin-bottom: 20px;
    font-weight: 600;
}

.solution-desc {
    margin-bottom: 20px;
    line-height: 1.8;
}

.solution-features {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #333333;
}

.feature-icon {
    width: 20px;
    height: 20px;
    color: #1E88E5;
}

.solution-image {
    flex: 1;
    min-width: 300px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.solution-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

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

@media (max-width: 768px) {
    .solution-content {
        flex-direction: column;
    }

    .solution-image {
        max-height: 300px;
    }
}

/* 5. 成功案例展示区 - 包含筛选功能 */
.cases {
    padding: 60px 0 30px;
    background-color: #F5F7FA;
}

.case-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.case-filter {
    padding: 6px 15px;
    background-color: #FFFFFF;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.case-filter.active {
    background-color: #1E88E5;
    color: #FFFFFF;
}

.case-filter:hover:not(.active) {
    background-color: #F0F5FF;
    color: #1E88E5;
}

.case-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 35px;
    justify-content: space-around;
}

.case-card {
    width: 350px;
    background-color: #FFFFFF;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: all 0.5s ease;
    display: block; /* 默认显示所有案例 */
}

.case-card.hidden {
    display: none; /* 隐藏筛选掉的案例 */
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.1);
}

.case-img {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.case-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.case-card:hover .case-img img {
    transform: scale(1.1);
}

.case-info {
    padding: 20px;
}

.case-category {
    font-size: 12px;
    color: #1E88E5;
    background-color: rgba(30, 136, 229, 0.1);
    padding: 3px 10px;
    border-radius: 15px;
    display: inline-block;
    margin-bottom: 10px;
}

.case-title {
    font-size: 18px;
    color: #333333;
    font-weight: 600;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.case-desc {
    font-size: 14px;
    color: #666666;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;

}

.case-client {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: #999999;
}

.client-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: #F5F7FA;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1E88E5;
    font-weight: 600;
}

@media (max-width: 768px) {
    .case-card {
        width: 100%;
        margin: 0 20px;
    }
}

/* 6. 支撑能力区 */
.strength {
    padding: 40px 0;
    background-color: #FFFFFF;
}

.strength-cards {
    display: flex;
    gap: 40px;
    justify-content: center;
    flex-wrap: wrap;
}

.strength-card {
    width: 220px;
    height: 180px;
    background-color: #F5F7FA;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: all 0.5s ease;
}

.strength-card:hover {
    transform: scale(1.05);
    background-color: #1E88E5;
    color: #FFFFFF;
}

.strength-card:hover .strength-icon,
.strength-card:hover .strength-number,
.strength-card:hover .strength-desc {
    color: #FFFFFF;
}

.strength-icon {
    width: 40px;
    height: 40px;
    color: #4CAF50;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.strength-number {
    font-size: 30px;
    color: #4CAF50;
    font-weight: 700;
    margin-bottom: 10px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.strength-number::after {
    content: attr(data-number);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    animation: numberRoll 2s ease forwards;
    transform: translateY(100%);
}

@keyframes numberRoll {
    to {
        transform: translateY(0);
    }
}

.strength-desc {
    font-size: 14px;
    color: #666666;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .strength-card {
        width: 100%;
        margin: 0 20px;
    }

    .strength-number {
        font-size: 24px;
    }
}

/* 7. 新闻动态区 */
.news {
    padding: 60px 0;
    background-color: #F5F7FA;
}

.news-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 35px;
    justify-content: space-around;
    margin-bottom: 40px;
}

.news-card {
    width: 350px;
    background-color: #FFFFFF;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: all 0.5s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.news-img {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.news-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.news-card:hover .news-img img {
    transform: scale(1.1);
}

.news-content {
    padding: 20px;
}

.news-date {
    font-size: 12px;
    color: #999999;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.news-date::before {
    content: "";
    width: 8px;
    height: 8px;
    background-color: #1E88E5;
    border-radius: 50%;
}

.news-title {
    font-size: 18px;
    color: #333333;
    font-weight: 600;
    margin-bottom: 15px;
    line-height: 1.4;
    transition: all 0.3s ease;
}

.news-title a:hover {
    color: #1E88E5;
}

.news-desc {
    font-size: 14px;
    color: #666666;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-more {
    font-size: 14px;
    color: #1E88E5;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: all 0.3s ease;
}

.news-more:hover {
    text-decoration: underline;
    gap: 8px;
}

.news-more-btn {
    display: flex;
    justify-content: center;
    text-align: center;
    margin-top: 30px;
}

@media (max-width: 768px) {
    .news-card {
        width: 100%;
        margin: 0 20px;
    }
}



@keyframes tipFade {
    from {
        opacity: 0;
        transform: translateX(10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}



.mobile-footer {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background-color: #1E88E5;
    color: #FFFFFF;
    align-items: center;
    justify-content: space-around;
    z-index: 999;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.mobile-footer-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 12px;
    transition: all 0.3s ease;
}

.mobile-footer-item:hover {
    transform: translateY(-3px);
}

@media (max-width: 768px) {
    .float-bar {
        display: none;
    }

    .mobile-footer {
        display: flex;
    }

    body {
        padding-bottom: 60px;
    }
}

/* 9. 底部Footer */
.footer {
    background-color: #FFFFFF;
    padding: 40px 0;
    border-top: 1px solid #F2F2F2;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
}

.footer-business {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-business h3 {
    font-size: 18px;
    color: #333333;
    margin-bottom: 5px;
}

.footer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-tag {
    padding: 5px 12px;
    background-color: #F5F7FA;
    color: #666666;
    border-radius: 4px;
    font-size: 13px;
    transition: all 0.3s ease;
}

.footer-tag:hover {
    background-color: #1E88E5;
    color: #FFFFFF;
}

.footer-contact h3 {
    font-size: 18px;
    color: #333333;
    margin-bottom: 20px;
}

.contact-list {
    list-style: none;
}

.contact-list li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.contact-list li:hover {
    transform: translateX(5px);
}

.contact-icon {
    width: 20px;
    height: 20px;
    color: #1E88E5;
}

.footer-copyright {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #F2F2F2;
    font-size: 12px;
    color: #999999;
}