/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: #333;
    background-color: #f5f5f5;
    overflow-x: hidden; /* 防止水平滚动条 */
    text-rendering: optimizeSpeed;
}

a {
    text-decoration: none;
    color: #409EFF;
    transition: color 0.3s ease;
}

a:hover {
    color: #66b1ff;
}

ul, li {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 通用样式 */
.section {
    padding: 70px 0;
    position: relative;
    will-change: transform;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    position: relative;
    color: #2c3e50;
    font-weight: 600;
}

.section-title:after {
    content: '';
    display: block;
    width: 70px;
    height: 4px;
    background: linear-gradient(90deg, #409EFF, #53a8ff);
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

/* 头部样式 */
.header {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
    will-change: transform;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    transition: height 0.3s ease;
    padding: 0 10px;
}

.header.scrolled .header-content {
    height: 70px;
}

.logo {
    position: relative;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: translateY(-2px);
}

.header-logo-img {
    height: 45px;
    width: auto;
    display: block;
    transition: all 0.3s ease;
    max-width: 180px;
    object-fit: contain;
}

@media (max-width: 768px) {
    .header-logo-img {
        height: 38px;
        max-width: 140px;
    }
}

@media (max-width: 576px) {
    .header-logo-img {
        height: 34px;
        max-width: 120px;
    }
}

.logo h1 {
    font-size: 22px;
    font-weight: bold;
    color: #333;
    transition: all 0.3s ease;
    position: relative;
    padding-left: 10px;
}

.logo h1:before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background: linear-gradient(to bottom, #409EFF, #53a8ff);
    border-radius: 2px;
}

.logo h1:hover {
    color: #409EFF;
}

.nav-menu {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-menu .menu {
    display: flex;
    justify-content: center;
    margin: 0 20px;
}

.menu-item {
    position: relative;
    margin: 0 15px;
    padding: 5px 0;
}

.menu-item a {
    color: #333;
    font-weight: 500;
    padding: 10px 15px;
    position: relative;
    transition: all 0.3s ease;
    text-align: center;
    display: block;
    border-radius: 4px;
}

.menu-item a:hover {
    color: #409EFF;
    background-color: rgba(64, 158, 255, 0.05);
}

.menu-item a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #409EFF, #53a8ff);
    transition: all 0.3s ease;
    border-radius: 1px;
    transform: translateX(-50%);
}

.menu-item a:hover:after {
    width: 70%;
}

.menu-item a i {
    margin-right: 5px;
    font-size: 14px;
    opacity: 0.8;
    transition: transform 0.3s ease;
}

.menu-item a:hover i {
    transform: translateY(-2px);
    opacity: 1;
}

.menu-item.active a {
    color: #409EFF;
    background-color: rgba(64, 158, 255, 0.05);
}

.menu-item.active a:after {
    width: 70%;
}

/* 头部导航区联系信息 */
.contact-info {
    display: flex;
    align-items: center;
    font-weight: bold;
    color: #409EFF;
    padding: 8px 15px;
    border-radius: 20px;
    background-color: rgba(64, 158, 255, 0.1);
    transition: all 0.3s ease;
}

.contact-info:hover {
    background-color: rgba(64, 158, 255, 0.2);
    transform: translateY(-2px);
}

.contact-info i {
    animation: pulse 2s infinite;
    margin-right: 8px;
}

.contact-text {
    display: inline-block;
}

.contact-info-mobile {
    display: none;
}

.mobile-only {
    display: none;
}

/* 移动菜单图标样式 */
.mobile-menu-toggle {
    display: none;
    font-size: 26px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(64, 158, 255, 0.1);
    color: #409EFF;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
    background-color: rgba(64, 158, 255, 0.2);
    transform: rotate(90deg);
}

/* 轮播图样式 - 纯HTML实现 */
.banner {
    width: 100%;
    position: relative;
    margin-top: 80px; /* 与header高度相同 */
    overflow: hidden;
}

.pure-carousel {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
    position: relative;
    height: 600px;
}

.carousel-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.carousel-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    z-index: 1;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 2;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-caption {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    z-index: 2;
    width: 80%;
    max-width: 1200px;
    padding: 20px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 8px;
    backdrop-filter: blur(5px);
}

.carousel-caption h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.carousel-caption p {
    font-size: 1.2rem;
    line-height: 1.6;
    margin: 0;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.carousel-prev,
.carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.5);
    color: #fff;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 3;
    transition: background-color 0.3s;
}

.carousel-prev:hover,
.carousel-next:hover {
    background-color: rgba(0, 0, 0, 0.8);
}

.carousel-prev {
    left: 20px;
}

.carousel-next {
    right: 20px;
}

.carousel-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    z-index: 3;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    margin: 0 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background-color: #fff;
    transform: scale(1.2);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .header-content {
        height: 60px;
    }
    
    .logo h1 {
        font-size: 18px;
    }
    
    .nav-menu .menu {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        height: auto;
        max-height: 70vh;
        overflow-y: auto;
        background-color: #fff;
        flex-direction: column;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        border-top: 2px solid #409EFF;
        transform: translateY(-10px);
        opacity: 0;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }
    
    .nav-menu .menu.active {
        display: block;
        transform: translateY(0);
        opacity: 1;
    }
    
    .menu-item {
        margin: 0;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .menu-item:last-child {
        border-bottom: none;
    }
    
    /* 显示移动端专用菜单项 */
    .mobile-only {
        display: block;
        background-color: #f5f9ff;
    }
    
    .mobile-only a {
        color: #409EFF !important;
        font-weight: 600 !important;
    }
    
    .mobile-only a i {
        margin-right: 6px;
    }
    
    .menu-item a {
        display: block;
        padding: 15px 20px;
        font-size: 16px;
        text-align: center;
        transition: all 0.3s ease;
    }
    
    .menu-item a:hover {
        background-color: #f5f9ff;
    }
    
    .menu-item a:after {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .contact-info {
        display: none;
    }
    
    .contact-info-mobile {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .banner {
        margin-top: 60px;
    }
    
    .pure-carousel {
        height: 400px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 30px;
    }
    
    .company-info, .footer-nav, .social-media {
        width: 100%;
        margin-bottom: 40px;
    }
    
    .footer-info {
        flex-direction: column;
    }
    
    .contact-form {
        padding: 30px;
    }
    
    .carousel-caption {
        width: 90%;
        padding: 15px;
    }
    
    .carousel-caption h2 {
        font-size: 1.8rem;
    }
    
    .carousel-caption p {
        font-size: 1rem;
        line-height: 1.4;
    }
    
    .carousel-prev, 
    .carousel-next {
        width: 36px;
        height: 36px;
        font-size: 1.2rem;
    }
    
    .carousel-dots {
        bottom: 10px;
    }
    
    .dot {
        width: 10px;
        height: 10px;
        margin: 0 4px;
    }
}

@media (max-width: 576px) {
    .header-content {
        height: 50px;
    }
    
    .logo h1 {
        font-size: 16px;
    }
    
    .nav-menu .menu {
        top: 50px;
    }
    
    .mobile-menu-toggle {
        width: 36px;
        height: 36px;
        font-size: 22px;
    }
    
    .banner {
        margin-top: 50px;
    }
    
    .service-item,
    .case-item {
        width: 100%;
    }
    
    .contact-form {
        padding: 25px;
    }
    
    .pure-carousel {
        height: 300px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .contact-info {
        gap: 30px;
    }
    
    .contact-item i {
        font-size: 24px;
        padding: 12px;
    }
    
    .carousel-caption {
        width: 94%;
        padding: 10px;
        background-color: rgba(0, 0, 0, 0.6);
    }
    
    .carousel-caption h2 {
        font-size: 1.4rem;
        margin-bottom: 0.5rem;
    }
    
    .carousel-caption p {
        font-size: 0.9rem;
        line-height: 1.3;
    }
    
    .carousel-prev, 
    .carousel-next {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
    
    .carousel-prev {
        left: 10px;
    }
    
    .carousel-next {
        right: 10px;
    }
    
    .dot {
        width: 8px;
        height: 8px;
        margin: 0 3px;
    }
}

/* 关于我们样式 */
.about {
    background-color: #f9f9f9;
    position: relative;
    overflow: hidden;
}

.about:before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, rgba(64, 158, 255, 0.15), rgba(83, 168, 255, 0.15));
    top: -150px;
    left: -150px;
    border-radius: 50%;
    z-index: 1;
}

.about:after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, rgba(64, 158, 255, 0.1), rgba(83, 168, 255, 0.1));
    bottom: -100px;
    right: -100px;
    border-radius: 50%;
    z-index: 1;
}

.section-content {
    position: relative;
    z-index: 2;
}

.company-intro {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.company-logo {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #409EFF, #53a8ff);
    border-radius: 50%;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 25px rgba(64, 158, 255, 0.25);
    position: relative;
}

.company-logo i {
    font-size: 48px;
    color: #fff;
    animation: pulse 2s infinite;
}

.company-logo:before {
    content: '';
    position: absolute;
    width: 120px;
    height: 120px;
    border: 2px solid rgba(64, 158, 255, 0.3);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 2s infinite;
}

.company-intro h3 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 25px;
    color: #333;
    position: relative;
    display: inline-block;
}

.company-intro p {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 40px;
}

.company-intro p i {
    color: #409EFF;
    margin-right: 8px;
}

.company-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 40px;
    gap: 30px;
}

.feature-item {
    flex: 0 0 calc(33.333% - 30px);
    background-color: #fff;
    padding: 25px 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-item i {
    font-size: 36px;
    color: #409EFF;
    margin-bottom: 15px;
    display: inline-block;
    transition: all 0.3s ease;
}

.feature-item:hover i {
    transform: scale(1.2);
    color: #53a8ff;
}

.feature-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.feature-item p {
    font-size: 14px;
    color: #666;
    margin-bottom: 0;
}

@media (max-width: 991px) {
    .feature-item {
        flex: 0 0 calc(50% - 30px);
    }
}

@media (max-width: 767px) {
    .feature-item {
        flex: 0 0 100%;
    }
}

/* 服务内容样式 */
.services {
    background: linear-gradient(135deg, #f5f7fa 0%, #f8f9fb 100%);
    position: relative;
    overflow: hidden;
}

.services:before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(64, 158, 255, 0.1) 0%, rgba(64, 158, 255, 0) 70%);
    top: -150px;
    left: -150px;
    border-radius: 50%;
}

.services:after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(64, 158, 255, 0.1) 0%, rgba(64, 158, 255, 0) 70%);
    bottom: -150px;
    right: -150px;
    border-radius: 50%;
}

.service-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.service-item {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    width: calc(33.333% - 20px);
    text-align: center;
    transition: all 0.5s ease;
    transform: translateY(50px);
    opacity: 0;
    will-change: transform, opacity;
}

.service-item.show {
    transform: translateY(0);
    opacity: 1;
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.service-icon {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #409EFF, #53a8ff);
    border-radius: 50%;
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(64, 158, 255, 0.2);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.service-icon i {
    font-size: 32px;
    color: #fff;
    transition: all 0.4s ease;
}

.service-icon:before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #53a8ff, #409EFF);
    border-radius: 50%;
    opacity: 0;
    transform: scale(0);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.service-item:hover .service-icon {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(64, 158, 255, 0.3);
}

.service-item:hover .service-icon:before {
    opacity: 1;
    transform: scale(1.2);
}

.service-item:hover .service-icon i {
    transform: scale(1.1);
    animation: pulse 1.5s infinite;
}

.service-item h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: #2c3e50;
    position: relative;
    padding-bottom: 15px;
}

.service-item h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, #409EFF, #53a8ff);
    border-radius: 1px;
}

.service-item p {
    color: #666;
    line-height: 1.7;
}

/* 案例展示样式 */
.cases {
    background-color: #fff;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.03);
}

.case-list {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
    justify-content: center;
}

.case-item {
    flex: 0 0 calc(33.333% - 30px);
    margin: 15px;
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.4s ease;
    position: relative;
}

.case-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.case-image {
    height: 200px;
    background: linear-gradient(135deg, #409EFF, #53a8ff);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-icon {
    width: 80px;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #409EFF;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.case-item:hover .case-icon {
    transform: scale(1.1) rotate(10deg);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.case-info {
    padding: 25px;
    position: relative;
}

.case-info h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
    transition: all 0.3s ease;
}

.case-info h3 i {
    color: #f39c12;
    margin-right: 8px;
}

.case-info p {
    color: #666;
    margin-bottom: 20px;
    font-size: 15px;
    line-height: 1.6;
}

.case-link {
    display: inline-block;
    color: #409EFF;
    font-weight: 500;
    position: relative;
    padding-right: 20px;
    transition: all 0.3s ease;
}

.case-link i {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    transition: all 0.3s ease;
}

.case-link:hover {
    color: #53a8ff;
    padding-right: 25px;
}

.case-link:hover i {
    right: -5px;
}

@media (max-width: 991px) {
    .case-item {
        flex: 0 0 calc(50% - 30px);
    }
}

@media (max-width: 767px) {
    .case-item {
        flex: 0 0 calc(100% - 30px);
    }
}

/* 联系我们新样式 */
.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.contact-info {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
}

.contact-form {
    flex: 1.5;
    min-width: 300px;
    max-width: 700px;
    background-color: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.contact-card {
    background-color: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    height: 100%;
}

.contact-card h3, 
.contact-form h3 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 26px;
    color: #2c3e50;
    position: relative;
    padding-bottom: 15px;
}

.contact-card h3:after, 
.contact-form h3:after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #409EFF, #53a8ff);
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 1.5px;
}

.contact-card h3 i, 
.contact-form h3 i {
    margin-right: 10px;
    color: #409EFF;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    padding: 15px 0;
    border-bottom: 1px dashed #eaeaea;
    transition: all 0.3s ease;
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-item i {
    font-size: 24px;
    width: 50px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    background: linear-gradient(135deg, #409EFF, #53a8ff);
    color: white;
    border-radius: 50%;
    margin-right: 15px;
    box-shadow: 0 4px 10px rgba(64, 158, 255, 0.2);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.contact-text {
    flex: 1;
}

.contact-text h4 {
    font-size: 16px;
    color: #666;
    margin-bottom: 5px;
    font-weight: 600;
}

.contact-text p {
    font-size: 18px;
    color: #333;
    margin: 0;
}

.contact-item:hover i {
    transform: rotate(10deg);
    box-shadow: 0 6px 15px rgba(64, 158, 255, 0.3);
}

.contact-social {
    display: flex;
    justify-content: center;
    margin-top: 30px;
    gap: 20px;
}

.social-icon-sm {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #f5f7fa 0%, #f8f9fb 100%);
    color: #409EFF;
    border-radius: 50%;
    font-size: 20px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-decoration: none;
}

.social-icon-sm:hover {
    transform: translateY(-5px) rotate(10deg);
    background: linear-gradient(135deg, #409EFF, #53a8ff);
    color: #fff;
    box-shadow: 0 10px 20px rgba(64, 158, 255, 0.3);
}

/* 表单新样式 */
.form-row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.form-row .form-group {
    flex: 1;
    min-width: 200px;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #333;
    font-size: 16px;
}

.form-group label i {
    margin-right: 8px;
    color: #409EFF;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #e8eaed;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background-color: #f9fafc;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: #409EFF;
    outline: none;
    box-shadow: 0 0 8px rgba(64, 158, 255, 0.2);
    background-color: #fff;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.submit-btn {
    display: inline-block;
    width: 100%;
    padding: 15px 25px;
    background: linear-gradient(135deg, #409EFF, #53a8ff);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(64, 158, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.submit-btn i {
    margin-right: 10px;
    transition: transform 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(64, 158, 255, 0.4);
}

.submit-btn:hover i {
    transform: translateX(5px);
}

.submit-btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0));
    transform: skewX(-25deg);
    transition: all 0.5s ease;
}

.submit-btn:hover:before {
    left: 100%;
}

.form-result {
    margin-top: 30px;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    display: none;
}

.form-result.success {
    background-color: rgba(103, 194, 58, 0.2);
    color: #67c23a;
    border: 1px solid rgba(103, 194, 58, 0.3);
}

.form-result.error {
    background-color: rgba(245, 108, 108, 0.2);
    color: #f56c6c;
    border: 1px solid rgba(245, 108, 108, 0.3);
}

@media (max-width: 991px) {
    .contact-container {
        flex-direction: column;
    }
    
    .contact-form,
    .contact-info {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .contact-card,
    .contact-form {
        padding: 30px 20px;
    }
}

/* 底部样式 */
.footer {
    background: linear-gradient(135deg, #2c3e50 0%, #1a2530 100%);
    color: #fff;
    padding: 80px 0 30px;
    position: relative;
    overflow: hidden;
}

.footer:before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 70%);
    top: -200px;
    left: -200px;
    border-radius: 50%;
}

.footer:after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 70%);
    bottom: -150px;
    right: -150px;
    border-radius: 50%;
}

.footer-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 50px;
}

.company-info,
.footer-nav,
.social-media {
    margin-bottom: 30px;
    animation: fadeInUp 1s forwards;
    animation-delay: 0.2s;
    opacity: 0;
}

.company-info {
    max-width: 350px;
}

.company-info h3,
.footer-nav h3,
.social-media h3 {
    font-size: 20px;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 15px;
    color: #fff;
}

.company-info h3:after,
.footer-nav h3:after,
.social-media h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, #409EFF, #53a8ff);
    border-radius: 1.5px;
}

.company-info p {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    color: #b2bec3;
    transition: all 0.3s ease;
}

.company-info p:hover {
    color: #fff;
    transform: translateX(5px);
}

.company-info p i {
    margin-right: 15px;
    color: #409EFF;
    transition: all 0.3s ease;
}

.company-info p:hover i {
    color: #66b1ff;
}

.footer-nav ul li {
    margin-bottom: 12px;
    transition: all 0.3s ease;
}

.footer-nav ul li:hover {
    transform: translateX(5px);
}

.footer-nav ul li a {
    color: #b2bec3;
    transition: all 0.3s ease;
    position: relative;
    padding-left: 15px;
}

.footer-nav ul li a:before {
    content: '>';
    position: absolute;
    left: 0;
    color: #409EFF;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.footer-nav ul li a:hover {
    color: #fff;
    padding-left: 20px;
}

.footer-nav ul li a:hover:before {
    opacity: 1;
    transform: translateX(0);
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-radius: 50%;
    transition: all 0.3s ease;
    font-size: 20px;
    text-decoration: none;
}

.social-icon:hover {
    background-color: #409EFF;
    color: #fff;
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.copyright {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    padding-bottom: 15px;
    color: #b2bec3;
    font-size: 14px;
    animation: fadeIn 1s forwards;
    animation-delay: 0.5s;
    opacity: 0;
}

.copyright p {
    margin-bottom: 10px;
}

.copyright p:last-child {
    margin-bottom: 0;
}

/* 备案号样式 */
.beian {
    margin-top: 15px;
    font-size: 13px;
    color: #a0a7ad;
    line-height: 1.6;
    text-align: center;
}

.beian a {
    color: #a0a7ad;
    text-decoration: none;
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.beian a:hover {
    color: #409EFF;
}

.beian i {
    margin-right: 5px;
    font-size: 14px;
}

.beian-divider {
    margin: 0 10px;
    color: #607080;
}

.beian img {
    height: 14px;
    margin-right: 5px;
    vertical-align: middle;
    position: relative;
    top: -1px;
}

@media (max-width: 768px) {
    .beian {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 10px;
        margin-top: 20px;
    }
    
    .beian a {
        justify-content: center;
        width: 100%;
        padding: 5px 0;
    }
    
    .beian-divider {
        display: none;
    }
    
    .copyright {
        padding-top: 20px;
        padding-bottom: 20px;
    }
}

@media (max-width: 576px) {
    .beian {
        margin-top: 15px;
        gap: 8px;
    }
    
    .beian a {
        font-size: 12px;
    }
    
    .copyright p {
        font-size: 12px;
        line-height: 1.5;
    }
    
    .footer {
        padding-bottom: 15px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

/* 渐入效果类 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
    will-change: transform, opacity;
}

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

/* 响应式样式 */
@media (max-width: 1024px) {
    .service-item,
    .case-item {
        width: calc(50% - 15px);
    }
    
    .company-info, .footer-nav, .social-media {
        width: calc(33.333% - 20px);
    }
    
    .carousel-caption h2 {
        font-size: 28px;
    }
    
    .nav-menu {
        flex: none;
    }
    
    .nav-menu .menu {
        margin: 0 5px;
    }
    
    .menu-item {
        margin: 0 5px;
    }
    
    .menu-item a {
        padding: 8px 10px;
        font-size: 15px;
    }
    
    .contact-info {
        padding: 6px 12px;
        font-size: 14px;
    }
    
    .contact-text {
        display: none;
    }
    
    .contact-info i {
        margin-right: 0;
    }
}

@media (max-width: 768px) {
    .header-content {
        height: 60px;
    }
    
    .logo h1 {
        font-size: 18px;
    }
    
    .nav-menu .menu {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        height: auto;
        max-height: 70vh;
        overflow-y: auto;
        background-color: #fff;
        flex-direction: column;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        border-top: 2px solid #409EFF;
        transform: translateY(-10px);
        opacity: 0;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }
    
    .nav-menu .menu.active {
        display: block;
        transform: translateY(0);
        opacity: 1;
    }
    
    .menu-item {
        margin: 0;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .menu-item:last-child {
        border-bottom: none;
    }
    
    /* 显示移动端专用菜单项 */
    .mobile-only {
        display: block;
        background-color: #f5f9ff;
    }
    
    .mobile-only a {
        color: #409EFF !important;
        font-weight: 600 !important;
    }
    
    .mobile-only a i {
        margin-right: 6px;
    }
    
    .menu-item a {
        display: block;
        padding: 15px 20px;
        font-size: 16px;
        text-align: center;
        transition: all 0.3s ease;
    }
    
    .menu-item a:hover {
        background-color: #f5f9ff;
    }
    
    .menu-item a:after {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .contact-info {
        display: none;
    }
    
    .contact-info-mobile {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .banner {
        margin-top: 60px;
    }
    
    .pure-carousel {
        height: 400px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 30px;
    }
    
    .company-info, .footer-nav, .social-media {
        width: 100%;
        margin-bottom: 40px;
    }
    
    .footer-info {
        flex-direction: column;
    }
    
    .contact-form {
        padding: 30px;
    }
    
    .carousel-caption {
        width: 90%;
        padding: 15px;
    }
    
    .carousel-caption h2 {
        font-size: 1.8rem;
    }
    
    .carousel-caption p {
        font-size: 1rem;
        line-height: 1.4;
    }
    
    .carousel-prev, 
    .carousel-next {
        width: 36px;
        height: 36px;
        font-size: 1.2rem;
    }
    
    .carousel-dots {
        bottom: 10px;
    }
    
    .dot {
        width: 10px;
        height: 10px;
        margin: 0 4px;
    }
}

@media (max-width: 576px) {
    .service-item,
    .case-item {
        width: 100%;
    }
    
    .contact-form {
        padding: 25px;
    }
    
    .el-carousel {
        height: 300px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .contact-info {
        gap: 30px;
    }
    
    .contact-item i {
        font-size: 24px;
        padding: 12px;
    }
    
    .carousel-caption h2 {
        font-size: 20px;
    }
    
    .carousel-caption p {
        font-size: 12px;
    }
    
    .el-carousel__arrow {
        width: 36px !important;
        height: 36px !important;
        font-size: 18px !important;
    }
}

/* 避免初始加载时的闪烁 */
.no-js .service-item,
.no-js .case-item,
.no-js .contact-form,
.no-js .fade-in {
    opacity: 1;
    transform: none;
}

/* 联系我们基础样式 */
.contact {
    background: linear-gradient(135deg, #f5f7fa 0%, #f8f9fb 100%);
    position: relative;
    overflow: hidden;
}

.contact:before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(64, 158, 255, 0.1) 0%, rgba(64, 158, 255, 0) 70%);
    top: -200px;
    right: -200px;
    border-radius: 50%;
    z-index: 0;
}

.contact:after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(64, 158, 255, 0.08) 0%, rgba(64, 158, 255, 0) 70%);
    bottom: -150px;
    left: -150px;
    border-radius: 50%;
    z-index: 0;
}

.contact .container {
    position: relative;
    z-index: 1;
}

/* 微信二维码弹出窗样式 */
.wechat-qr-container {
    position: relative;
    display: inline-block;
}

.wechat-qr-popup {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 10px;
    text-align: center;
    width: 150px;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    margin-bottom: 10px;
}

.wechat-qr-container:hover .wechat-qr-popup {
    opacity: 1;
    visibility: visible;
}

.wechat-qr-popup img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    display: block;
}

.wechat-qr-popup:after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -8px;
    border-width: 8px;
    border-style: solid;
    border-color: white transparent transparent transparent;
}

.wechat-qr-popup p {
    margin: 5px 0 0 0;
    font-size: 12px;
    color: #333;
}

/* 底部社交媒体图标的二维码样式调整 */
.social-media .social-icon.wechat-qr-container .wechat-qr-popup {
    bottom: 120%;
    left: 0;
    transform: translateX(0);
}

.social-media .social-icon.wechat-qr-container .wechat-qr-popup:after {
    left: 22px;
    margin-left: 0;
}

/* 联系区域的微信图标调整 */
.contact-social .social-icon-sm.wechat-qr-container .wechat-qr-popup {
    bottom: 120%;
    left: 0;
    transform: translateX(-25%);
}

.contact-social .social-icon-sm.wechat-qr-container .wechat-qr-popup:after {
    left: 25%;
    margin-left: 0;
}

/* 移动端菜单的微信二维码特殊样式 */
.wechat-menu-item .wechat-qr-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    margin-bottom: 0;
    width: 200px;
    z-index: 1002;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.wechat-menu-item .wechat-qr-popup:after {
    display: none;
}

/* 移动端对移动端菜单以外的微信hover效果进行处理 */
@media (max-width: 768px) {
    .no-hover.wechat-qr-container:hover .wechat-qr-popup {
        opacity: 0;
        visibility: hidden;
    }
}

/* 修复社交图标垂直居中对齐 */
.social-icon i,
.social-icon-sm i {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

/* 确保底部微信图标正确显示 */
.social-media .social-icon {
    position: relative;
}

/* 优化联系区域微信图标 */
.contact-social .social-icon-sm {
    position: relative;
}

/* 修复移动端菜单图标对齐 */
.wechat-menu-item {
    position: relative;
}

.menu-item.wechat-menu-item a {
    width: 100%;
    display: block;
}

/* 底部社交图标样式优化 */
.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-radius: 50%;
    transition: all 0.3s ease;
    font-size: 20px;
    text-decoration: none; /* 确保没有下划线 */
}

/* 联系区域社交图标样式优化 */
.social-icon-sm {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #f5f7fa 0%, #f8f9fb 100%);
    color: #409EFF;
    border-radius: 50%;
    font-size: 20px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-decoration: none; /* 确保没有下划线 */
}

/* 确保图标在容器中垂直居中 */
.social-icon i, 
.social-icon-sm i {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

/* 优化移动端菜单中的微信图标 */
.menu-item.wechat-menu-item a i {
    display: inline-block;
    vertical-align: middle;
    margin-right: 6px;
}

/* 移动端微信联系按钮样式 */
.menu-item.mobile-only.wechat-menu-item {
    text-align: center;
}

.menu-item.mobile-only.wechat-menu-item a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 20px;
    box-sizing: border-box;
    width: 100%;
}

/* 移动端菜单中图标特殊处理 */
@media (max-width: 768px) {
    .mobile-only a i {
        margin-right: 6px;
        display: inline-block;
        vertical-align: middle;
    }
    
    .menu-item.mobile-only a {
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* 加载屏幕样式 */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, #0a1929 0%, #081220 100%);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    transition: opacity 0.8s ease, visibility 0.8s ease;
    overflow: hidden;
}

.preloader::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle, rgba(64, 158, 255, 0.03) 0%, rgba(0, 0, 0, 0) 70%);
    top: -25%;
    left: -25%;
    animation: rotate 20s linear infinite;
}

.preloader::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect x="0" y="0" width="100" height="100" fill="none" stroke="%23143d6b" stroke-width="0.5" stroke-dasharray="5,5" /></svg>');
    background-size: 50px;
    opacity: 0.15;
    animation: pulse 8s ease-in-out infinite;
}

.preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

.preloader .logo-container {
    position: relative;
    width: 180px;
    height: 180px;
    margin-bottom: 25px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

.preloader .logo-image {
    width: 100px;
    height: 100px;
    object-fit: contain;
    position: absolute;
    border-radius: 50%;
    z-index: 3;
    animation: logoPulse 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    box-shadow: 0 0 50px rgba(64, 158, 255, 0.4);
    background-color: rgba(255, 255, 255, 0.05);
    padding: 15px;
    opacity: 0;
    transform: scale(0.6);
    animation: logoAppear 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.3s forwards, logoPulse 3s ease-in-out 1s infinite;
}

.preloader .logo-text {
    font-size: 28px;
    font-weight: bold;
    background: linear-gradient(135deg, #ffffff 0%, #53a8ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-top: 0;
    opacity: 0;
    transform: translateY(20px);
    animation: fade-up 0.6s ease-out 0.8s forwards;
    text-align: center;
    letter-spacing: 2px;
    text-shadow: 0 0 20px rgba(64, 158, 255, 0.5);
}

/* 高科技环形加载器 */
.loader {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    position: relative;
    z-index: 1;
    perspective: 800px;
}

.loader:before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(transparent 0deg, transparent 60deg, rgba(64, 158, 255, 0.1) 60deg, rgba(64, 158, 255, 0.1) 120deg, transparent 120deg, transparent 180deg, rgba(64, 158, 255, 0.1) 180deg, rgba(64, 158, 255, 0.1) 240deg, transparent 240deg, transparent 300deg, rgba(64, 158, 255, 0.1) 300deg, rgba(64, 158, 255, 0.1) 360deg);
    animation: spin 5s linear infinite;
}

.loader-ring {
    position: absolute;
    top: 0;
    left: 0;
    border: 2px solid transparent;
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(64, 158, 255, 0.5);
}

.loader-ring:nth-child(1) {
    width: 100%;
    height: 100%;
    border-top-color: #409EFF;
    border-left-color: rgba(64, 158, 255, 0.5);
    animation: spin 5s linear infinite, pulseOpacity 3s ease-in-out infinite;
}

.loader-ring:nth-child(2) {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    border-top-color: transparent;
    border-right-color: #53a8ff;
    border-left-color: #53a8ff;
    animation: spin 4s linear infinite reverse, pulseOpacity 2s ease-in-out infinite 0.3s;
    transform: rotateX(45deg) rotateY(45deg);
}

.loader-ring:nth-child(3) {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    border-top-color: transparent;
    border-right-color: transparent;
    border-bottom-color: #6eb9ff;
    border-left-color: #6eb9ff;
    animation: spin 3s linear infinite, pulseOpacity 2s ease-in-out infinite 0.5s;
    transform: rotateX(-45deg) rotateY(-45deg);
}

/* 数字科技风格进度条 */
.preloader .loading-bar {
    width: 280px;
    height: 4px;
    background-color: rgba(64, 158, 255, 0.1);
    border-radius: 2px;
    margin-top: 40px;
    overflow: hidden;
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    animation: fade-up 0.6s ease-out 1s forwards;
    box-shadow: 0 0 10px rgba(64, 158, 255, 0.2);
}

.preloader .loading-bar-fill {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, #409EFF, #53a8ff);
    position: absolute;
    border-radius: 2px;
    animation: loading 2.5s cubic-bezier(0.4, 0, 0.2, 1) 1.2s forwards;
}

.preloader .loading-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 1.5s infinite;
    transform: translateX(-100%);
}

.preloader .loading-bar::after {
    content: '';
    position: absolute;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: #fff;
    box-shadow: 0 0 15px 2px #409EFF;
    top: 50%;
    transform: translateY(-50%);
    animation: dot-move 2.5s cubic-bezier(0.4, 0, 0.2, 1) 1.2s forwards;
    opacity: 0.7;
}

.preloader .loading-text {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 15px;
    opacity: 0;
    transform: translateY(20px);
    animation: fade-up 0.6s ease-out 1.2s forwards;
    text-align: center;
    letter-spacing: 1px;
    font-family: monospace;
    text-shadow: 0 0 5px rgba(64, 158, 255, 0.5);
}

/* 科技粒子效果 */
.preloader .particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.preloader .particle {
    position: absolute;
    display: block;
    background-color: rgba(64, 158, 255, 0.5);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    animation: float 20s infinite linear;
    opacity: 0;
}

.preloader .particle:nth-child(1) {
    left: 20%;
    top: 25%;
    width: 3px;
    height: 3px;
    animation-delay: 0s;
    animation-duration: 25s;
}

.preloader .particle:nth-child(2) {
    left: 75%;
    top: 60%;
    width: 4px;
    height: 4px;
    animation-delay: 1s;
    animation-duration: 28s;
}

.preloader .particle:nth-child(3) {
    left: 35%;
    top: 80%;
    width: 2px;
    height: 2px;
    animation-delay: 2s;
    animation-duration: 22s;
}

.preloader .particle:nth-child(4) {
    left: 60%;
    top: 15%;
    width: 3px;
    height: 3px;
    animation-delay: 3s;
    animation-duration: 20s;
}

.preloader .particle:nth-child(5) {
    left: 15%;
    top: 70%;
    width: 2px;
    height: 2px;
    animation-delay: 4s;
    animation-duration: 30s;
}

/* 添加更多科技风格粒子 */
.preloader .particle::before,
.preloader .particle::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: inherit;
    border-radius: inherit;
    animation: pulsate 3s infinite ease-in-out;
}

.preloader .particle::before {
    animation-delay: 0.5s;
}

.preloader .particle::after {
    animation-delay: 1s;
}

/* 交互式网格背景 */
.preloader .grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(64, 158, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(64, 158, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 0;
    transform-origin: center;
    animation: grid-rotate 60s linear infinite;
}

/* 高科技动画效果 */
@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes pulseOpacity {
    0% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.8;
    }
    100% {
        opacity: 0.5;
    }
}

@keyframes logoPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(64, 158, 255, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 25px 10px rgba(64, 158, 255, 0.2);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(64, 158, 255, 0);
    }
}

@keyframes float {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.5;
    }
    50% {
        transform: translateY(-100px) translateX(50px) rotate(180deg);
        opacity: 0.8;
    }
    90% {
        opacity: 0.5;
    }
    100% {
        transform: translateY(0) translateX(0) rotate(360deg);
        opacity: 0;
    }
}

@keyframes logoAppear {
    0% {
        opacity: 0;
        transform: scale(0.6);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes loading {
    0% {
        width: 0;
    }
    20% {
        width: 20%;
    }
    50% {
        width: 60%;
    }
    70% {
        width: 80%;
    }
    100% {
        width: 100%;
    }
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

@keyframes dot-move {
    0% {
        left: 0;
    }
    20% {
        left: 20%;
    }
    50% {
        left: 60%;
    }
    70% {
        left: 80%;
    }
    100% {
        left: 100%;
    }
}

@keyframes fade-up {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulsate {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(3);
        opacity: 0;
    }
}

@keyframes grid-rotate {
    0% {
        transform: perspective(1000px) rotateX(5deg) rotateY(5deg) rotateZ(0deg);
    }
    100% {
        transform: perspective(1000px) rotateX(5deg) rotateY(5deg) rotateZ(360deg);
    }
}

/* 页面内容的淡入效果 */
.page-content {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.page-content.visible {
    opacity: 1;
}

@keyframes pulsate {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(3);
        opacity: 0;
    }
}

@keyframes grid-rotate {
    0% {
        transform: perspective(1000px) rotateX(5deg) rotateY(5deg) rotateZ(0deg);
    }
    100% {
        transform: perspective(1000px) rotateX(5deg) rotateY(5deg) rotateZ(360deg);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.2;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.3;
    }
    100% {
        transform: scale(1);
        opacity: 0.2;
    }
}