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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Logo样式 */
.logo-container {
    display: flex;
    align-items: center;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #3498db, #8e44ad);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
}

.logo-letter {
    font-size: 20px;
    font-weight: bold;
    color: white;
}

.logo-text {
    color: #2c3e50;
    font-size: 1.5rem;
    font-weight: 700;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-item {
    margin: 0 15px;
}

.nav-link {
    font-size: 1rem;
    font-weight: 500;
    color: #333;
    position: relative;
    padding: 5px 0;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #3498db;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #3498db;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: #333;
}

/* 主页横幅样式 */
.hero {
    height: 100vh;
    /* 使用images文件夹中的图片作为背景 */
    background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.6)), 
                url('../assets/images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    color: #fff;
    text-align: center;
    overflow: hidden;
}

/* 添加科技感的网格线效果 */
.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 30px 30px;
    z-index: 1;
}

.hero-content {
    z-index: 2;
    max-width: 1200px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

/* 粒子效果 */
.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    animation: float 15s infinite linear;
}

.particle:nth-child(1) {
    width: 20px;
    height: 20px;
    top: 10%;
    left: 20%;
    animation-duration: 20s;
}

.particle:nth-child(2) {
    width: 15px;
    height: 15px;
    top: 20%;
    right: 10%;
    animation-duration: 25s;
    animation-direction: reverse;
}

.particle:nth-child(3) {
    width: 10px;
    height: 10px;
    bottom: 30%;
    left: 15%;
    animation-duration: 30s;
}

.particle:nth-child(4) {
    width: 25px;
    height: 25px;
    bottom: 20%;
    right: 25%;
    animation-duration: 35s;
    animation-direction: reverse;
}

.particle:nth-child(5) {
    width: 12px;
    height: 12px;
    top: 40%;
    left: 50%;
    animation-duration: 22s;
}

/* 公司简介模块 */
.company-intro {
    padding: 100px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf9 100%);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.intro-text .section-title {
    color: #2c3e50;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.intro-text .section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: #3498db;
}

.intro-description {
    font-size: 1.2rem;
    color: #555;
    margin-bottom: 30px;
    line-height: 1.8;
}

.features {
    margin-bottom: 30px;
}

.feature-item {
    display: flex;
    margin-bottom: 25px;
    opacity: 0;
    transform: translateX(-20px);
    animation: slideInRight 0.6s forwards;
}

.feature-item:nth-child(1) {
    animation-delay: 0.2s;
}

.feature-item:nth-child(2) {
    animation-delay: 0.4s;
}

.feature-item:nth-child(3) {
    animation-delay: 0.6s;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: #3498db;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
    transition: all 0.3s ease;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-item:hover .feature-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
}

.feature-content h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
    color: #2c3e50;
}

.feature-content p {
    color: #777;
    font-size: 1rem;
}

/* 图片区域动画 */
.image-placeholder {
    position: relative;
    height: 400px;
    perspective: 1000px;
}

.animated-element {
    position: absolute;
    border-radius: 10px;
    background: linear-gradient(135deg, #3498db, #8e44ad);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.5s ease;
}

.element-1 {
    width: 150px;
    height: 150px;
    top: 20px;
    left: 20px;
    animation: floatElement 6s ease-in-out infinite;
    z-index: 1;
}

.element-2 {
    width: 100px;
    height: 100px;
    bottom: 50px;
    right: 30px;
    background: linear-gradient(135deg, #2ecc71, #f1c40f);
    animation: floatElement 8s ease-in-out infinite 0.5s;
    z-index: 2;
}

.element-3 {
    width: 80px;
    height: 80px;
    top: 150px;
    right: 50px;
    background: linear-gradient(135deg, #e74c3c, #e67e22);
    animation: floatElement 7s ease-in-out infinite 1s;
    z-index: 3;
}

.main-image {
    position: absolute;
    width: 250px;
    height: 250px;
    top: 75px;
    left: 100px;
    background: linear-gradient(135deg, #9b59b6, #3498db);
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    z-index: 4;
    animation: pulse 3s ease-in-out infinite;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.primary-btn {
    background: #3498db;
    color: white;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.primary-btn:hover {
    background: #2980b9;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

.secondary-btn {
    background: transparent;
    color: #3498db;
    border: 2px solid #3498db;
}

.secondary-btn:hover {
    background: #3498db;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

/* 区块样式 */
.section {
    padding: 100px 0;
}

.bg-light {
    background-color: #f8f9fa;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #777;
    max-width: 600px;
    margin: 0 auto;
}

.section-line {
    width: 60px;
    height: 3px;
    background: #3498db;
    margin: 15px auto;
}

/* 关于我们样式 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.5rem;
    margin: 25px 0 10px;
    color: #2c3e50;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: #555;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    animation: slideInUp 0.6s forwards;
}

.stat-item:nth-child(1) {
    animation-delay: 0.2s;
}

.stat-item:nth-child(2) {
    animation-delay: 0.4s;
}

.stat-item:nth-child(3) {
    animation-delay: 0.6s;
}

.stat-item:nth-child(4) {
    animation-delay: 0.8s;
}

.stat-item h3 {
    font-size: 2rem;
    color: #3498db;
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 1rem;
    color: #777;
}

.placeholder-image {
    background: #eee;
    height: 350px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #999;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.placeholder-image:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.placeholder-image.circle {
    border-radius: 50%;
    height: 200px;
    width: 200px;
    margin: 0 auto;
}

.placeholder-image.small-circle {
    border-radius: 50%;
    height: 60px;
    width: 60px;
}

/* 业务样式 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    border-radius: 10px;
    padding: 40px 25px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
}

.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.service-icon {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.2);
    color: #2980b9;
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

.service-description {
    color: #777;
    font-size: 1rem;
}



.testimonial {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 30px;
    backdrop-filter: blur(10px);
    opacity: 0;
    transform: translateX(30px);
    animation: slideInLeft 0.6s forwards;
}

.testimonial:nth-child(2) {
    animation-delay: 0.3s;
}

.testimonial-content p {
    font-style: italic;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-info {
    margin-left: 15px;
}

.author-info h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.author-info p {
    color: rgba(255, 255, 255, 0.8);
}

/* 联系方式样式 */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
}

.contact-item {
    display: flex;
    margin-bottom: 30px;
    opacity: 0;
    transform: translateX(-20px);
    animation: slideInRight 0.6s forwards;
}

.contact-item:nth-child(1) {
    animation-delay: 0.2s;
}

.contact-item:nth-child(2) {
    animation-delay: 0.4s;
}

.contact-item:nth-child(3) {
    animation-delay: 0.6s;
}

.contact-icon {
    font-size: 1.5rem;
    color: #3498db;
    margin-right: 15px;
    min-width: 40px;
    transition: all 0.3s ease;
}

.contact-item:hover .contact-icon {
    transform: scale(1.2);
}

.contact-text h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: #2c3e50;
}

.contact-text p {
    color: #777;
    font-size: 1.1rem;
}

.contact-map .placeholder-image {
    height: 300px;
    margin-top: 0;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

textarea.form-control {
    resize: vertical;
}

/* 合作伙伴样式 */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.partner {
    display: flex;
    justify-content: center;
    align-items: center;
}

.partner-logo {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-placeholder {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.logo-placeholder:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.logo-placeholder::before {
    content: "";
    position: absolute;
    width: 150%;
    height: 150%;
    background: conic-gradient(
        transparent, 
        rgba(255, 255, 255, 0.5), 
        transparent 60%
    );
    animation: rotate 4s linear infinite;
    z-index: 1;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.partner-initial {
    font-size: 2rem;
    color: white;
    z-index: 2;
}

.partner-name {
    font-size: 0.6rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 5px;
    z-index: 2;
    text-align: center;
}

.tech-blue {
    background: linear-gradient(135deg, #3498db, #2980b9);
}

.tech-green {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
}

.tech-purple {
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
}

.tech-orange {
    background: linear-gradient(135deg, #e67e22, #d35400);
}

.tech-red {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.tech-cyan {
    background: linear-gradient(135deg, #1abc9c, #16a085);
}

.partner .logo-placeholder {
    height: 120px;
    transition: all 0.3s ease;
}

.partner .logo-placeholder:hover {
    transform: translateY(-10px);
}

/* 页脚样式 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info .logo-container {
    margin-bottom: 20px;
}

.footer-info .logo-icon {
    width: 30px;
    height: 30px;
}

.footer-info .logo-letter {
    font-size: 16px;
}

.footer-info .logo-text {
    color: white;
    font-size: 1.2rem;
}

.footer-info p {
    margin-bottom: 20px;
    color: #bbb;
    line-height: 1.6;
}

.footer-links h3,
.footer-contact h3 {
    margin-bottom: 20px;
    font-size: 1.3rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h3::after,
.footer-contact h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: #3498db;
}

.footer-links ul li,
.footer-contact ul li {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
}

.footer-links ul li i,
.footer-contact ul li i {
    color: #3498db;
    margin-right: 10px;
    margin-top: 4px;
    width: 20px;
    text-align: center;
}

.footer-links ul li a {
    color: #bbb;
    transition: color 0.3s ease;
    text-decoration: none;
}

.footer-links ul li a:hover {
    color: #3498db;
}

.footer-contact ul li {
    color: #bbb;
    font-size: 0.95rem;
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #bbb;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-bottom-links {
    margin-top: 10px;
}

.footer-bottom-links a {
    color: #bbb;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-bottom-links a:hover {
    color: #3498db;
}

.social-links a {
    color: white;
    font-size: 1.2rem;
    margin-right: 15px;
    transition: color 0.3s ease;
    display: inline-block;
}

.social-links a:hover {
    color: #3498db;
    transform: translateY(-3px);
}

/* 动画效果 */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes float {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(10px, 10px) rotate(5deg);
    }
    50% {
        transform: translate(0, 20px) rotate(0deg);
    }
    75% {
        transform: translate(-10px, 10px) rotate(-5deg);
    }
    100% {
        transform: translate(0, 0) rotate(0deg);
    }
}

@keyframes floatElement {
    0% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
    100% {
        transform: translateY(0) rotate(0deg);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    }
    50% {
        transform: scale(1.03);
        box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    }
}

@keyframes slideInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media screen and (max-width: 992px) {
    .hero-title {
        font-size: 2.8rem;
    }
    
    .about-content,
    .intro-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .image-placeholder {
        height: 300px;
        margin-top: 30px;
    }
    
    .contact-map {
        margin-top: 30px;
    }
}

@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 15px 0;
    }

    .hamburger {
        display: block;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .stats {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        margin-top: 20px;
    }

    .social-links a {
        margin: 0 10px;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-form .form-control {
        border-radius: 30px;
        margin-bottom: 10px;
    }
    
    .newsletter-form .btn {
        border-radius: 30px;
    }
    
    .intro-content {
        text-align: center;
    }
    
    .feature-item {
        justify-content: center;
        text-align: left;
    }
    
    .feature-content {
        text-align: left;
    }
}

@media screen and (max-width: 576px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
    }
    
    .feature-icon {
        margin: 0 auto 15px;
    }
    
    .feature-content {
        text-align: center;
    }
    
    .logo-text {
        font-size: 1.2rem;
    }
}

/* 装饰图模块 */
.decorative-section {
    width: 100%;
    height: 300px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
}

.decorative-wrapper {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.circuit-pattern {
    position: relative;
    width: 100%;
    height: 100%;
}

.circuit-pattern::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(52, 152, 219, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(52, 152, 219, 0.1) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: 1;
}

.circuit-pattern::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(52, 152, 219, 0.2) 0%, transparent 20%),
        radial-gradient(circle at 80% 70%, rgba(155, 89, 182, 0.2) 0%, transparent 20%);
    z-index: 2;
}

.pulse-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(52, 152, 219, 0.2);
    box-shadow: 0 0 20px rgba(52, 152, 219, 0.3);
    z-index: 3;
    animation: pulse 4s infinite;
}

.circle-1 {
    width: 120px;
    height: 120px;
    top: 20%;
    left: 15%;
    animation-delay: 0s;
}

.circle-2 {
    width: 80px;
    height: 80px;
    bottom: 25%;
    right: 20%;
    animation-delay: 1s;
}

.circle-3 {
    width: 60px;
    height: 60px;
    top: 40%;
    right: 25%;
    animation-delay: 2s;
}

.floating-element {
    position: absolute;
    color: rgba(255, 255, 255, 0.7);
    font-size: 2rem;
    z-index: 4;
    animation: floatElement 8s infinite ease-in-out;
    text-shadow: 0 0 10px rgba(52, 152, 219, 0.5);
}

.float-1 {
    top: 30%;
    left: 25%;
    animation-delay: 0s;
}

.float-2 {
    bottom: 30%;
    right: 30%;
    animation-delay: 2s;
}

.float-3 {
    top: 60%;
    left: 40%;
    animation-delay: 4s;
}

.float-4 {
    top: 20%;
    right: 35%;
    animation-delay: 6s;
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
    100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
}

@keyframes floatElement {
    0% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-20px) rotate(5deg);
    }
    50% {
        transform: translateY(0) rotate(0deg);
    }
    75% {
        transform: translateY(20px) rotate(-5deg);
    }
    100% {
        transform: translateY(0) rotate(0deg);
    }
}

/* 更新装饰图模块之后的联系模块间距 */
#contact {
    padding-top: 80px;
}