/* 定义变量 */
:root {
    /* 主色调 */
    --color-primary: #040d46;
    --color-primary-light: #1a2b6b;
    --color-primary-dark: #030a33;
    
    /* 次色调 */
    --color-secondary: #f3f6fa;
    --color-secondary-light: #ffffff;
    --color-secondary-dark: #e6e9f0;
    
    /* 文字颜色 */
    --color-text: #333333;
    --color-text-light: #7d91aa;
    --color-text-lighter: #a8b4c5;
    --color-text-white: #ffffff;
    
    /* 阴影 */
    --shadow-color: rgba(4, 13, 70, 0.1);
    --shadow-dark: rgba(4, 13, 70, 0.2);
    
    /* 间距 */
    --spacing-xs: 10px;
    --spacing-sm: 20px;
    --spacing-md: 30px;
    --spacing-lg: 60px;
    
    /* 过渡效果 */
    --transition: all 0.3s ease;
}

/* 性能优化 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 懒加载图片样式 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lazy-load.loaded {
    opacity: 1;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .swiper {
        height: 500px;
    }
    
    .main-title h2 {
        font-size: 2rem;
    }
    
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-box {
        width: 100%;
        position: relative;
        top: -40px !important;
    }
}

@media (max-width: 768px) {
    .swiper {
        height: 300px;
    }
    
    .main-title h2 {
        font-size: 1.8rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .about-item {
        width: 100%;
    }
    
    .customize {
        padding: 0 var(--spacing-sm);
    }
    
    .team-swiper {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .swiper {
        height: 200px;
    }
    
    .main-title h2 {
        font-size: 1.5rem;
    }
    
    .about-btn {
        width: 100%;
        text-align: center;
    }
    
    .culture-main {
        height: auto;
    }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 为不同部分添加延迟 */
/* #ours-service .grid-item {
    transition-delay: 0.2s;
} */

#our-product .grid-product-item {
    transition-delay: 0.3s;
}

#about-us .about-item {
    transition-delay: 0.4s;
}

/* 加载状态 */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--color-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 优化按钮悬停效果 */
.about-btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.about-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.about-btn:hover::before {
    left: 0;
}

/* 主要内容区域样式 */
/* 公告样式 */
.pt {
    padding: var(--spacing-lg) 0;
}

.bg1 {
    background-color: var(--color-secondary);
}

.bg2 {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
}

.main-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.main-title h2 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
    text-shadow: 0 2px 4px var(--shadow-color);
}

.main-title p {
    color: var(--color-text-light);
    font-size: 1.1rem;
}

/* swiper样式 */
.swiper {
    width: 100%;
    height: 300px;
    transition: height 0.3s ease;
}

.swiper-item {
    width: 100%;
    height: 100%;
    position: relative;
}

.swiper-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.swiper-title {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 100%;
}

.swiper-title h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-text-white);
}

.swiper-title p {
    font-size: 1.2rem;
    color: var(--color-text-white);
}

.swiper-button-prev:after,
.swiper-button-next:after {
    font-size: 24px;
    color: var(--color-text-white);
    text-align: center;
}

.swiper-pagination-bullet {
    background: var(--color-text-white);
}

.swiper-pagination-bullet-active {
    background: var(--color-text);
}

@media (min-width: 768px) {
    .swiper {
        height: 500px;
    }
}

@media (min-width: 1024px) {
    .swiper {
        height: 715px;
    }
}

/* 我们的服务 */
.grid {
    display: grid;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
}

.grid-item {
    background-color: var(--color-secondary-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    transition: var(--transition);
    box-shadow: 0 2px 10px var(--shadow-color);
    border: 1px solid var(--color-secondary-dark);
}

.grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px var(--shadow-dark);
    background-color: var(--color-primary-light);
    color: var(--color-text-white);
}

.grid-item .inners {
    display: flex;
    align-items: center;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.grid-item:hover .inners {
    color: var(--color-text-white);
}

@media (min-width: 1024px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .grid {
        grid-template-columns: 1fr;
    }
}

/* 我们的产品 */
.grid-product {
    display: grid;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
}

.grid-product-item {
    width: 100%;
    transition: var(--transition);
}

.grid-product-item:hover {
    transform: translateY(-5px);
}

.product-img {
    cursor: pointer;
    height: 250px;
    position: relative;
    overflow: hidden;
    border-radius: 8px;
}

.product-img-hover {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    background-color: rgba(5, 10, 50, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.product-img:hover .product-img-hover {
    opacity: 1;
}

.product-img-btn {
    background-color: var(--color-text-white);
    padding: 0px 25px;
    text-align: center;
    line-height: 40px;
    border-radius: 5px;
    max-width: 95%;
}

.product-title h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: var(--spacing-sm) 0 var(--spacing-xs);
    color: var(--color-primary);
}

.product-title p {
    color: var(--color-text-light);
}

@media (min-width: 768px) {
    .grid-product {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .product-img {
        height: 260px;
    }
}

/* 关于我们 */
.about-us {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.about-bg {
    width: 100%;
    height: 184px;
}

.about-box {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    top: -240px;
    color: var(--color-text-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: 0 4px 20px var(--shadow-dark);
}

.about-box h2 {
    font-size: 36px;
}

.about-en {
    line-height: 60px;
}

.about-l {
    height: 6px;
    width: 50px;
    background: var(--color-text-white);
    margin-bottom: 30px;
}

.about-btn {
    color: var(--color-text-white);
    background: #357abd;
    display: inline-block;
    padding: 0 30px;
    line-height: 40px;
    height: 40px;
    margin-top: 30px;
    cursor: pointer;
    border-radius: 5px;
}

.about-btn:hover {
    border: 1px solid var(--color-text);
    color: var(--color-text);
    background-color: var(--color-text-white);
}

.about-content {
    width: 100%;
}

.about-list {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
}

.about-item {
    width: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 0;
}

.about-item img {
    width: 52px;
    height: 52px;
}

.about-item h3 {
    font-size: 30px;
    line-height: 70px;
    font-weight: 600;
    margin: 5px 0;
    text-align: center;
}

.about-item div {
    line-height: 27px;
}

@media (min-width: 1024px) {
    .about-bg {
        height: 200px;
    }
}

@media (min-width: 1200px) {
    .about-main {
        display: flex;
    }

    .about-content,
    .about-box {
        width: 365px;
    }

    .about-box {
        position: absolute;
    }

    .about-item {
        width: 25%;
    }
}

/* 自定义模块 */
.customize {
    padding: 0 50px;
    margin-bottom: 20px;
}

.customize-box1 {
    border: 3px solid #2d3666;
    padding: 5px;
}

.customize-box2 {
    width: 100%;
    border: 1px solid #2d3666;
    padding: 15px;
    text-align: center;
    color: inherit;
}

.customize-box2 p {
    font-size: 20px;
    line-height: 30px;
    margin: 10px;
}

.customize-box2 img {
    width: 100%;
    height: auto;
}

/* 我们的团队 */
.team-swiper {
    width: 100%;
    height: 260px;
    position: relative;
    overflow: hidden;
}

.team-swiper .swiper-wrapper {
    /* overflow: hidden; */
}

.team-swiper .swiper-slide {
    background-color: var(--color-text-white);
    color: var(--color-text);
    padding: 35px;
    border-radius: 5px;
}

.team-btn-next {
    position: absolute;
    right: 0px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    color: var(--color-text-white);
    cursor: pointer;
}

.team-btn-prev {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    color: var(--color-text-white);
    cursor: pointer;
}

.team-swiper .inner {
    display: flex;
    align-items: center;
    margin-bottom: 18px;
}

.team-swiper .inner img {
    width: 66px;
    height: 66px;
    object-fit: cover;
}

.team-swiper .inner h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

/* 我们的文化 */
.culture-col {
    height: 100%;
    padding: 0 15px;
}

.culture-main .inner {
    margin: 15px 0;
    border-radius: 5px;
    overflow: hidden;
    height: 100%;
}

.culture-main .inner img {
    width: 100%;
}

.culture-right {
    display: flex;
    flex-wrap: wrap;
}

.right-item {
    width: 100%;
    padding: 0 15px;
    overflow: hidden;
}

@media (min-width: 768px) {
    .culture-right .right-item {
        width: 50%;
    }
}

@media (min-width: 1024px) {
    .culture-main {
        height: 360px;
    }
}

/* 常见问题解答 */
.accordion-item {
    padding: 15px;
    background-color: var(--color-text-white);
    color: var(--color-text);
    border-radius: 5px;
    width: 100%;
    cursor: pointer;
    margin-bottom: 20px;
}

.accordion-head {
    display: flex;
    justify-content: space-between;
}

.accordion-svg {
    width: 20px;
    height: 20px;
}

.accordion-svg.collapsed {
    display: none;
}

.accordion-svg.expanded {
    display: block;
}

.question-svg {
    width: 20px;
    height: 20px;
}

.question-svg.collapsed {
    display: none;
}

.question-svg.expanded {
    display: block;
}

.accordion-box {
    padding-top: 12px;
}

.contact_left div {
    line-height: 27px;
}

.accordion-itemq {
    margin-bottom: 20px;
    padding: 15px;
    background-color: var(--color-secondary-light);
    color: var(--color-text);
    border-radius: 5px;
    width: 100%;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--color-secondary-dark);
}

.accordion-headerq {
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.accordion-itemq:hover {
    background-color: var(--color-primary);
    color: var(--color-text-white);
}

.accordion-contentq {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.5s ease-in-out, opacity 0.5s ease-in-out, padding 0.5s ease-in-out;
    padding: 0 15px;
}

.accordion-itemq.openq {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-text-white);
    box-shadow: 0 4px 15px var(--shadow-dark);
}

.accordion-contentq.openq {
    max-height: 500px;
    opacity: 1;
    padding: 15px;
    color: var(--color-text-white);
}

.collapsed {
    display: inline;
    transition: transform 0.3s ease;
}

.expanded {
    display: none;
    transition: transform 0.3s ease;
}

.accordion-itemq.openq .collapsed {
    transform: rotate(180deg);
}

.accordion-itemq.openq .expanded {
    display: inline;
    transform: rotate(180deg);
}

/* 底部模块 */
.footer {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-text-white);
}