/* 全局样式优化 */
:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --primary-light: #a3cfec;
    --primary-bg: #f8fbff;
    --secondary-color: #34495e;
    --accent-color: #e74c3c;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --white: #ffffff;
    --shadow-sm: 0 5px 15px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 15px 35px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--primary-bg);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: #0066cc;
}

ul {
    list-style: none;
}

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

/* 导航栏样式 */
.header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: all 0.4s ease;
}

.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    padding: 15px 0;
    transition: all 0.4s ease;
}

.navbar-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    z-index: 10;
}

.logo a {
    text-decoration: none;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-dark);
    margin: 0;
    transition: all 0.3s ease;
}

.logo h1 span {
    color: var(--primary-color);
    font-weight: 500;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu {
    display: flex;
    gap: 5px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-menu li {
    position: relative;
}

.nav-link {
    display: inline-block;
    padding: 10px 15px;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    border-radius: 5px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    opacity: 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 30px;
    opacity: 1;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-btn {
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.2);
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(52, 152, 219, 0.3);
}

.language-selector {
    position: relative;
    cursor: pointer;
}

.current-language {
    display: flex;
    align-items: center;
    color: var(--text-dark);
    font-size: 0.9rem;
    font-weight: 500;
}

.current-language::after {
    content: '▼';
    font-size: 0.6rem;
    margin-left: 5px;
    transition: all 0.3s ease;
}

.language-selector:hover .current-language::after {
    transform: rotate(180deg);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--white);
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: 10px 0;
    min-width: 100px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 100;
    margin-top: 10px;
}

.language-selector:hover .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-dropdown li {
    padding: 8px 15px;
    font-size: 0.9rem;
    color: var(--text-dark);
    transition: all 0.3s ease;
}

.language-dropdown li:hover {
    background: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 10;
}

.nav-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--text-dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* 滚动时导航栏样式变化 */
.header.scrolled .navbar {
    padding: 10px 0;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .navbar-right {
        gap: 15px;
    }
    
    .nav-link {
        padding: 10px;
        font-size: 0.95rem;
    }
    
    .contact-btn {
        padding: 8px 15px;
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .navbar-right {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        padding: 80px 30px 30px;
        transition: all 0.4s ease;
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
        gap: 40px;
        z-index: 5;
    }
    
    .navbar-right.active {
        right: 0;
    }
    
    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: 10px;
    }
    
    .nav-link {
        display: block;
        padding: 15px;
        font-size: 1.1rem;
        border-radius: 8px;
    }
    
    .nav-link:hover,
    .nav-link.active {
        background: rgba(52, 152, 219, 0.1);
    }
    
    .nav-link::after {
        display: none;
    }
    
    .navbar-actions {
        flex-direction: column;
        width: 100%;
        gap: 15px;
    }
    
    .contact-btn {
        width: 100%;
        text-align: center;
        padding: 12px;
    }
    
    .language-selector {
        align-self: flex-start;
    }
    
    .language-dropdown {
        position: static;
        box-shadow: none;
        border: 1px solid rgba(0, 0, 0, 0.1);
        margin-top: 10px;
        display: none;
    }
    
    .language-selector:hover .language-dropdown,
.language-dropdown.active {
    display: block;
}
}

/* 主内容区域调整，为固定导航栏腾出空间 */
main {
    padding-top: 80px; /* 导航栏高度 */
}

/* 页面内容样式 */
.page {
    display: none;
    padding: 30px 0;
}

.page.active {
    display: block;
}

/* 首页样式优化 */
.home-page {
    position: relative;
    overflow: hidden;
}

/* 添加装饰元素 */
.home-page::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
    top: -200px;
    right: -200px;
    z-index: -1;
}

.home-page::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
    bottom: 10%;
    left: -200px;
    z-index: -1;
}

/* 轮播图容器优化 */
.carousel-container {
    position: relative;
    width: 100%;
    height: 650px;
    overflow: hidden;
    margin-bottom: 80px;
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 10px 10px;
}

/* 轮播图内容遮罩优化 */
.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 60px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.4) 60%, transparent);
    color: var(--white);
    text-align: center;
}

.carousel-caption h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    font-weight: 600;
    animation: fadeInUp 1s ease;
}

.carousel-caption p {
    font-size: 1.4rem;
    margin-bottom: 30px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1.2s ease;
}

.carousel-caption .btn {
    animation: fadeInUp 1.4s ease;
}

/* 按钮样式优化 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border: none;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    z-index: -1;
    transition: opacity 0.3s ease;
    opacity: 0;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
}

.btn:hover::before {
    opacity: 1;
}

/* 公司简介部分优化 */
.intro-section {
    margin: 80px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--primary-light));
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.intro-content {
    display: flex;
    align-items: center;
    gap: 60px;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    position: relative;
}

.intro-content::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
    top: -100px;
    right: -100px;
}

.intro-text {
    padding: 50px;
    flex: 1;
}

.intro-text p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.intro-image {
    flex: 1;
    height: 450px;
    overflow: hidden;
    position: relative;
}

.intro-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(52, 152, 219, 0.1), transparent);
}

.intro-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

/* 留言板样式优化 */
.message-board {
    margin: 80px 0;
    position: relative;
}

.message-form {
    background: linear-gradient(135deg, var(--white), #f8f9fa);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.message-form::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.03) 0%, rgba(255, 255, 255, 0) 70%);
    top: -150px;
    right: -150px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #e1e8ed;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--white);
    color: var(--text-dark);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

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

.message-list {
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.message-item {
    padding: 25px;
    border-bottom: 1px solid #f0f0f0;
    transition: var(--transition);
}

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

.message-item:hover {
    background-color: #f9fbfd;
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}

.message-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1.1rem;
}

.message-date {
    color: var(--text-light);
    font-size: 0.9rem;
}

.message-body p {
    color: var(--text-dark);
    line-height: 1.6;
}

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

@keyframes float {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* 通用动画类 */
.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
}

.slide-in {
    animation: slideIn 0.8s ease forwards;
}

/* 可见性控制类 */
.visible {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.5s ease;
}

/* 初始隐藏状态 */
.section-header, .intro-content {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.8s ease;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .carousel-container {
        height: 550px;
    }
    
    .carousel-caption {
        padding: 40px;
    }
    
    .carousel-caption h2 {
        font-size: 2.5rem;
    }
    
    .carousel-caption p {
        font-size: 1.2rem;
    }
    
    .intro-content {
        flex-direction: column;
        gap: 0;
    }
    
    .intro-text, .intro-image {
        width: 100%;
    }
    
    .intro-image {
        height: 350px;
    }
}

@media (max-width: 768px) {
    .carousel-container {
        height: 450px;
        margin-bottom: 60px;
    }
    
    .carousel-caption {
        padding: 30px;
    }
    
    .carousel-caption h2 {
        font-size: 2rem;
    }
    
    .carousel-caption p {
        font-size: 1.1rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .intro-text {
        padding: 30px;
    }
}

@media (max-width: 576px) {
    .carousel-container {
        height: 400px;
        margin-bottom: 40px;
    }
    
    .carousel-caption h2 {
        font-size: 1.8rem;
    }
    
    .carousel-caption p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 10px 25px;
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    .intro-text {
        padding: 25px;
    }
    
    .intro-text p {
        font-size: 1rem;
    }
    
    .intro-image {
        height: 250px;
    }
    
    .message-form {
        padding: 25px;
    }
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: #fff;
    padding: 40px 0 20px;
    margin-top: 50px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-info, 
.footer-links {
    margin-bottom: 20px;
}

.footer-info h3,
.footer-links h3 {
    margin-bottom: 15px;
    color: #0099ff;
}

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

.footer-links a {
    color: #ccc;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #fff;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    margin-top: 20px;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar-container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .mobile-toggle {
        display: block;
        position: absolute;
        top: 15px;
        right: 15px;
    }
    
    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        margin-top: 15px;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        margin: 0;
        text-align: center;
    }
    
    .nav-links a {
        display: block;
        padding: 10px;
        border-top: 1px solid #eee;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .banner h1 {
        font-size: 2rem;
    }
}

/* 企业文化样式 */
.culture-section {
    display: flex;
    align-items: center;
    background: linear-gradient(to right, #e8f4fc 50%, #ffffff 50%);
    margin: 50px 0;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.culture-text {
    flex: 1;
    padding: 40px;
}

.culture-text h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 30px;
}

.culture-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
}

.culture-image {
    flex: 1;
    overflow: hidden;
}

.culture-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.culture-values {
    margin-top: 30px;
}

.culture-value-item {
    margin-bottom: 15px;
    display: flex;
    align-items: baseline;
}

.culture-value-item strong {
    margin-right: 10px;
    color: #0066cc;
}

.value-title {
    font-size: 1.1rem;
    color: #333;
    margin-right: 10px;
}

/* 页面切换按钮 */
.page-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 30px 0;
}

.page-nav-button {
    background: none;
    border: none;
    color: #666;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px 15px;
    transition: color 0.3s;
}

.page-nav-button:hover {
    color: #0066cc;
}

.page-nav-title {
    font-size: 1.8rem;
    font-weight: bold;
    color: #333;
    margin: 0 30px;
}

.page-nav-list {
    display: flex;
    justify-content: center;
    margin-top: 15px;
}

.page-nav-list li {
    margin: 0 10px;
    font-size: 1.1rem;
    color: #555;
    list-style-type: disc;
}

/* 关于我们页面样式 */
.about-page {
    position: relative;
    overflow: hidden;
    padding-top: 60px;
    background: linear-gradient(135deg, #f5f7fa 0%, #eef2f7 100%);
}

/* 装饰元素 */
.about-decoration {
    position: absolute;
    z-index: 0;
    opacity: 0.3;
    pointer-events: none;
}

.about-decoration-1 {
    top: 10%;
    left: 5%;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.2) 0%, rgba(52, 152, 219, 0) 70%);
    animation: float 15s ease-in-out infinite;
}

.about-decoration-2 {
    top: 60%;
    right: 5%;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.15) 0%, rgba(52, 152, 219, 0) 70%);
    animation: float 12s ease-in-out infinite reverse;
}

.about-decoration-3 {
    bottom: 10%;
    left: 15%;
    width: 150px;
    height: 150px;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.1) 0%, rgba(52, 152, 219, 0) 70%);
    animation: rotate 20s linear infinite;
}

@keyframes float {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0);
    }
}

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

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

/* 英雄区域 */
.about-hero {
    display: flex;
    align-items: center;
    margin-bottom: 80px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.about-hero.animate {
    opacity: 1;
    transform: translateY(0);
}

.about-hero-content {
    flex: 1;
    padding-right: 40px;
}

.about-hero-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #2c3e50;
    position: relative;
}

.about-hero-title:after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: #3498db;
    margin-top: 15px;
}

.about-hero-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #34495e;
    margin-bottom: 15px;
}

.about-hero-image {
    flex: 1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.about-hero-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.about-hero-image:hover img {
    transform: scale(1.03);
}

/* 数据展示区域 */
.about-data {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    margin: 60px 0;
    padding: 30px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.about-data.animate {
    opacity: 1;
    transform: translateY(0);
}

.data-item {
    text-align: center;
    padding: 20px;
    min-width: 150px;
}

.data-number {
    font-size: 3rem;
    font-weight: 700;
    color: #3498db;
    margin-bottom: 10px;
    position: relative;
}

.data-label {
    font-size: 1.1rem;
    color: #7f8c8d;
}

/* 核心价值观 */
.core-values {
    margin: 80px 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.core-values.animate {
    opacity: 1;
    transform: translateY(0);
}

.values-container {
    background-color: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 40px;
    position: relative;
}

.section-title:after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: #3498db;
    margin: 15px auto 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.value-card {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.value-icon {
    font-size: 2rem;
    color: #3498db;
    margin-bottom: 20px;
    display: inline-block;
    width: 70px;
    height: 70px;
    line-height: 70px;
    border-radius: 50%;
    background-color: rgba(52, 152, 219, 0.1);
}

.value-title {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.value-text {
    color: #7f8c8d;
    line-height: 1.6;
}

/* 发展历程 */
.timeline-section {
    margin: 100px 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.05) 0%, rgba(255, 255, 255, 0) 100%);
    padding: 60px 0;
    border-radius: 12px;
}

.timeline-section::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.03) 0%, rgba(255, 255, 255, 0) 70%);
    top: -150px;
    right: -150px;
    z-index: 0;
}

.timeline-section::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.03) 0%, rgba(255, 255, 255, 0) 70%);
    bottom: -150px;
    left: -150px;
    z-index: 0;
}

.timeline-section.animate {
    opacity: 1;
    transform: translateY(0);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 60px auto;
    padding: 20px 0;
    z-index: 1;
}

.timeline-line {
    position: absolute;
    width: 4px;
    background: linear-gradient(to bottom, rgba(52, 152, 219, 0.3), #3498db 20%, #3498db 80%, rgba(52, 152, 219, 0.3));
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    box-shadow: 0 0 10px rgba(52, 152, 219, 0.2);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    width: 50%;
    margin-bottom: 70px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    transition-delay: calc(var(--index, 0) * 0.2s);
}

.timeline-section.animate .timeline-item {
    opacity: 1;
    transform: translateY(0);
}

.timeline-item:nth-child(odd) {
    left: 0;
    padding-right: 60px;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
    padding-left: 60px;
    text-align: left;
}

.timeline-dot {
    position: absolute;
    width: 50px;
    height: 50px;
    background: #ffffff;
    border: 4px solid #3498db;
    border-radius: 50%;
    top: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 0 6px rgba(52, 152, 219, 0.1), 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.1);
    box-shadow: 0 0 0 8px rgba(52, 152, 219, 0.15), 0 8px 20px rgba(0, 0, 0, 0.15);
}

.timeline-item:nth-child(odd) .timeline-dot {
    right: -25px;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -25px;
}

.timeline-year {
    position: absolute;
    min-width: 80px;
    height: 36px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    text-align: center;
    line-height: 36px;
    border-radius: 18px;
    font-weight: bold;
    font-size: 1.1rem;
    top: -55px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    padding: 0 15px;
}

.timeline-item:hover .timeline-year {
    transform: translateX(-50%) translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.timeline-content {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    position: relative;
    transition: all 0.3s ease;
    overflow: hidden;
    border: 1px solid rgba(52, 152, 219, 0.1);
}

.timeline-item:hover .timeline-content {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.timeline-content::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 3px;
    bottom: 0;
    left: 0;
    background: linear-gradient(to right, transparent, #3498db, transparent);
    transform: scaleX(0);
    transition: transform 0.5s ease;
    transform-origin: center;
}

.timeline-item:hover .timeline-content::after {
    transform: scaleX(1);
}

.timeline-content h3 {
    margin-top: 0;
    color: #2c3e50;
    font-size: 1.4rem;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.timeline-content h3::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 3px;
    background: #3498db;
    bottom: -8px;
    left: 0;
}

.timeline-item:nth-child(odd) .timeline-content h3::after {
    right: 0;
    left: auto;
}

.timeline-content p {
    margin-bottom: 0;
    color: #7f8c8d;
    line-height: 1.7;
    font-size: 1.05rem;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .timeline-line {
        left: 40px;
    }
    
    .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 90px !important;
        padding-right: 20px !important;
        text-align: left !important;
        margin-bottom: 60px;
    }
    
    .timeline-item .timeline-dot {
        left: 15px !important;
        right: auto !important;
    }
    
    .timeline-year {
        left: 40px;
        transform: none;
    }
    
    .timeline-item:hover .timeline-year {
        transform: translateY(-5px);
    }
    
    .timeline-item:nth-child(odd) .timeline-content h3::after {
        left: 0;
        right: auto;
    }
}

@media (max-width: 576px) {
    .timeline-section {
        padding: 40px 0;
    }
    
    .timeline-content {
        padding: 20px;
    }
    
    .timeline-content h3 {
        font-size: 1.2rem;
    }
    
    .timeline-content p {
        font-size: 1rem;
    }
}

/* 团队展示 */
.team-section {
    margin: 80px 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.team-section.animate {
    opacity: 1;
    transform: translateY(0);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.team-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.team-image {
    height: 250px;
    overflow: hidden;
}

.team-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.team-info {
    padding: 20px;
    text-align: center;
}

.team-name {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 5px;
}

.team-position {
    color: #3498db;
    font-weight: 600;
    margin-bottom: 15px;
}

.team-bio {
    color: #7f8c8d;
    line-height: 1.6;
}

/* 添加JavaScript控制的动画类 */
.animate {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式调整 - 恢复被删除的部分 */
@media (max-width: 576px) {
    .about-data {
        flex-direction: column;
    }
    
    .data-item {
        width: 100%;
        margin-bottom: 20px;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
}

/* 案例展示部分样式 */
.case-showcase {
    margin: 100px 0;
    position: relative;
}

/* 案例分类导航 */
.case-nav {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 10px;
    -webkit-overflow-scrolling: touch;
}

.case-nav-btn {
    background: none;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    margin: 0 0.5rem;
    border-radius: 30px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.case-nav-btn:hover,
.case-nav-btn.active {
    background-color: var(--primary-color);
    color: white;
}

/* 移动设备上的案例导航样式 */
@media (max-width: 768px) {
    .case-nav {
        justify-content: flex-start;
        padding-bottom: 15px;
    }
    
    .case-nav::-webkit-scrollbar {
        height: 4px;
    }
    
    .case-nav::-webkit-scrollbar-track {
        background: #f1f1f1;
        border-radius: 10px;
    }
    
    .case-nav::-webkit-scrollbar-thumb {
        background: var(--primary-color);
        border-radius: 10px;
    }
    
    .case-nav-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
        margin: 0 0.3rem;
    }
    
    .case-nav-btn:first-child {
        margin-left: 0;
    }
}

/* 案例网格布局 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* 案例卡片样式 */
.case-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.5s ease;
    margin-bottom: 2rem;
    opacity: 1;
    transform: translateY(0);
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

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

.case-card.visible:hover {
    transform: translateY(-10px);
}

.case-card.hidden {
    opacity: 0;
    transform: translateY(20px);
    height: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.case-image {
    height: 250px;
    overflow: hidden;
    position: relative;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

/* 案例卡片悬停覆盖层 */
.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(41, 128, 185, 0.9), rgba(52, 152, 219, 0.7));
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.case-overlay-content {
    text-align: center;
    padding: 20px;
    color: var(--white);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.4s ease 0.1s;
}

.case-card:hover .case-overlay-content {
    transform: translateY(0);
    opacity: 1;
}

.case-overlay-content h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.case-overlay-content p {
    font-size: 1rem;
    margin-bottom: 15px;
    line-height: 1.5;
}

.case-details-btn {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid var(--white);
    border-radius: 30px;
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.case-details-btn:hover {
    background: var(--white);
    color: var(--primary-dark);
    transform: translateY(-3px);
}

/* 案例信息部分 */
.case-info {
    padding: 25px;
}

.case-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--text-dark);
    font-weight: 600;
}

.case-description {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-light);
}

.case-client, .case-date {
    display: flex;
    align-items: center;
    gap: 5px;
}

.case-client i, .case-date i {
    color: var(--primary-color);
}

/* 查看更多按钮 */
.case-more {
    text-align: center;
    margin-top: 20px;
}

/* 动画效果 - 筛选过滤 */
.case-card.hidden {
    opacity: 0;
    transform: scale(0.8);
    height: 0;
    margin: 0;
    padding: 0;
    transition: all 0.5s ease;
}

.case-card.visible {
    opacity: 1;
    transform: scale(1);
    height: auto;
    transition: all 0.5s ease;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .case-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .case-nav-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .case-image {
        height: 220px;
    }
    
    .case-info {
        padding: 20px;
    }
    
    .case-info h3 {
        font-size: 1.2rem;
    }
}

/* 服务项目样式 */
#services {
    background-color: var(--primary-bg);
    position: relative;
    overflow: hidden;
    padding: 80px 0;
}

#services::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
    top: -200px;
    right: -200px;
    z-index: 0;
}

#services::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
    bottom: -150px;
    left: -150px;
    z-index: 0;
}

/* 服务导航 */
.services-nav {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 10px;
}

.service-nav-btn {
    padding: 10px 20px;
    background: transparent;
    border: 2px solid var(--primary-light);
    border-radius: 30px;
    color: var(--text-dark);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    outline: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.service-nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    z-index: -1;
    transition: transform 0.3s ease;
    transform: scaleX(0);
    transform-origin: right;
}

.service-nav-btn:hover, 
.service-nav-btn.active {
    color: var(--white);
    border-color: var(--primary-color);
}

.service-nav-btn:hover::before, 
.service-nav-btn.active::before {
    transform: scaleX(1);
    transform-origin: left;
}

/* 服务展示区 */
.services-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

/* 服务卡片 */
.service-item {
    perspective: 1000px;
    height: 380px;
}

.service-card {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
    box-shadow: var(--shadow-sm);
    border-radius: 10px;
    cursor: pointer;
}

.service-item:hover .service-card {
    transform: rotateY(180deg);
}

.service-front, 
.service-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 10px;
    padding: 30px;
    display: flex;
    flex-direction: column;
}

.service-front {
    background: var(--white);
    align-items: center;
    text-align: center;
    justify-content: center;
    border-bottom: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.service-back {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    transform: rotateY(180deg);
    justify-content: space-between;
}

.service-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--white);
    font-size: 2rem;
    box-shadow: 0 10px 20px rgba(52, 152, 219, 0.2);
    transition: all 0.3s ease;
}

.service-item:hover .service-icon {
    transform: scale(1.1);
}

.service-front h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-dark);
    font-weight: 600;
}

.service-front p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 0.95rem;
    line-height: 1.5;
}

.service-more {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-block;
    position: relative;
    padding-bottom: 2px;
    transition: all 0.3s ease;
}

.service-more::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    bottom: 0;
    left: 0;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.service-item:hover .service-more::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* 服务卡片背面 */
.service-back h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    font-weight: 600;
    text-align: center;
    position: relative;
    padding-bottom: 15px;
}

.service-back h3::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 3px;
    background: var(--white);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.service-details {
    margin-bottom: 20px;
    flex-grow: 1;
}

.service-details li {
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    font-size: 0.95rem;
}

.service-details li i {
    margin-right: 10px;
    color: var(--white);
    font-size: 1rem;
}

.service-action {
    text-align: center;
}

.service-btn {
    background: var(--white);
    color: var(--primary-dark);
    border: none;
    padding: 10px 25px;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.service-btn:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

/* 服务优势 */
.service-advantages {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 10px;
    padding: 50px 30px;
    margin: 60px 0;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.service-advantages::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    top: -150px;
    right: -150px;
}

.service-advantages::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    bottom: -100px;
    left: -100px;
}

.advantages-title {
    color: var(--white);
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    font-weight: 600;
    position: relative;
    padding-bottom: 15px;
}

.advantages-title::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 3px;
    background: var(--white);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.advantages-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
    position: relative;
    z-index: 1;
}

.advantage-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.advantage-item:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.15);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--white);
    font-size: 1.8rem;
    transition: all 0.3s ease;
}

.advantage-item:hover .advantage-icon {
    transform: rotateY(360deg);
    background: rgba(255, 255, 255, 0.3);
}

.advantage-item h4 {
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.advantage-item p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* 服务流程 */
.service-process {
    margin: 60px 0;
    position: relative;
}

.process-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 50px;
    color: var(--text-dark);
    font-weight: 600;
    position: relative;
    padding-bottom: 15px;
}

.process-title::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 3px;
    background: var(--primary-color);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.process-container {
    display: flex;
    justify-content: space-between;
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.process-container::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-light);
    z-index: 0;
}

.process-step {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    text-align: center;
}

.process-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
    position: relative;
    transition: all 0.3s ease;
}

.process-step:hover .process-number {
    transform: scale(1.1);
}

.process-content {
    padding: 0 10px;
}

.process-content h4 {
    color: var(--text-dark);
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.process-content p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* 服务咨询 */
.service-cta {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 10px;
    padding: 50px;
    text-align: center;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.service-cta::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    top: -150px;
    right: -150px;
}

.service-cta h3 {
    color: var(--white);
    font-size: 2rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.service-cta p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.service-cta .btn {
    background: var(--white);
    color: var(--primary-dark);
    border: none;
    padding: 12px 30px;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.service-cta .btn:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .services-showcase {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-container {
        flex-wrap: wrap;
    }
    
    .process-step {
        flex-basis: 50%;
        margin-bottom: 40px;
    }
    
    .process-container::before {
        display: none;
    }
}

@media (max-width: 768px) {
    .services-showcase {
        grid-template-columns: 1fr;
    }
    
    .advantages-container {
        grid-template-columns: 1fr;
    }
    
    .process-step {
        flex-basis: 100%;
    }
    
    .service-cta {
        padding: 30px;
    }
    
    .service-cta h3 {
        font-size: 1.8rem;
    }
    
    .service-cta p {
        font-size: 1rem;
    }
}

/* 添加动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

.service-item {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.service-item:nth-child(1) { animation-delay: 0.1s; }
.service-item:nth-child(2) { animation-delay: 0.2s; }
.service-item:nth-child(3) { animation-delay: 0.3s; }
.service-item:nth-child(4) { animation-delay: 0.4s; }
.service-item:nth-child(5) { animation-delay: 0.5s; }
.service-item:nth-child(6) { animation-delay: 0.6s; }
.service-item:nth-child(7) { animation-delay: 0.7s; }
.service-item:nth-child(8) { animation-delay: 0.8s; }

.service-advantages, .service-process, .service-cta {
    animation: fadeIn 1s ease forwards;
    opacity: 0;
    animation-delay: 0.5s;
}

/* 新闻动态样式 */
#news {
    background-color: var(--primary-bg);
    position: relative;
    padding: 80px 0;
    overflow: hidden;
}

#news::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
    top: -200px;
    right: -200px;
    z-index: 0;
}

#news::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
    bottom: 10%;
    left: -200px;
    z-index: 0;
}

/* 新闻导航 */
.news-nav {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 10px;
}

.news-nav-btn {
    padding: 10px 25px;
    background: transparent;
    border: 2px solid var(--primary-light);
    border-radius: 30px;
    color: var(--text-dark);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    outline: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.news-nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    z-index: -1;
    transition: transform 0.3s ease;
    transform: scaleX(0);
    transform-origin: right;
}

.news-nav-btn:hover, 
.news-nav-btn.active {
    color: var(--white);
    border-color: var(--primary-color);
}

.news-nav-btn:hover::before, 
.news-nav-btn.active::before {
    transform: scaleX(1);
    transform-origin: left;
}

/* 新闻容器 */
.news-container {
    position: relative;
    z-index: 1;
}

/* 焦点新闻 */
.news-featured {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin-bottom: 40px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.news-featured:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.featured-image {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.featured-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    color: var(--white);
}

.featured-tag {
    background: var(--primary-color);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.featured-date {
    font-size: 0.9rem;
    opacity: 0.9;
}

.featured-content {
    padding: 30px;
}

.featured-content h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    line-height: 1.3;
    font-weight: 600;
}

.featured-content h3 a {
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

.featured-content h3 a:hover {
    color: var(--primary-color);
}

.featured-content p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.6;
}

/* 新闻列表 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.news-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.news-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.news-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    z-index: 1;
}

.news-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.news-date {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    line-height: 1.4;
    font-weight: 600;
}

.news-content h3 a {
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-content h3 a:hover {
    color: var(--primary-color);
}

.news-content p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 0.95rem;
    line-height: 1.6;
    flex-grow: 1;
}

.news-read-more {
    display: inline-flex;
    align-items: center;
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: none;
    margin-top: 15px;
    transition: all 0.3s ease;
}

.news-read-more i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.news-read-more:hover {
    color: var(--primary-dark);
}

.news-read-more:hover i {
    transform: translateX(5px);
}

/* 分页导航 */
.news-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 50px 0;
    gap: 10px;
}

.pagination-item, .pagination-next {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--white);
    color: var(--text-dark);
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    text-decoration: none;
}

.pagination-item:hover, .pagination-next:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.pagination-item.active {
    background: var(--primary-color);
    color: var(--white);
}

.pagination-dots {
    color: var(--text-light);
    font-weight: bold;
    letter-spacing: 2px;
}

/* 订阅区域 */
.news-subscribe {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 10px;
    padding: 40px;
    margin-top: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.news-subscribe::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    top: -100px;
    right: -50px;
}

.news-subscribe::after {
    content: '';
    position: absolute;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    bottom: -70px;
    left: -50px;
}

.subscribe-content {
    flex: 1;
    min-width: 250px;
    z-index: 1;
}

.subscribe-content h3 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.subscribe-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
}

.subscribe-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    z-index: 1;
    flex: 1;
    min-width: 300px;
}

.subscribe-form input {
    flex: 1;
    min-width: 200px;
    padding: 12px 20px;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    outline: none;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.subscribe-btn {
    background: var(--white);
    color: var(--primary-dark);
    border: none;
    padding: 12px 25px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    white-space: nowrap;
}

.subscribe-btn:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

/* 响应式设计 */
@media (min-width: 992px) {
    .news-featured {
        grid-template-columns: 1fr 1fr;
    }
    
    .featured-image {
        height: 100%;
    }
}

@media (max-width: 992px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .featured-content h3 {
        font-size: 1.5rem;
    }
    
    .featured-content p {
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .news-subscribe {
        padding: 30px;
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    
    .subscribe-form {
        flex-direction: column;
    }
    
    .featured-image {
        height: 300px;
    }
    
    .featured-content {
        padding: 20px;
    }
    
    .featured-content h3 {
        font-size: 1.3rem;
    }
}

/* 动画效果 */
.news-featured,
.news-card {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.news-featured {
    animation-delay: 0.1s;
}

.news-card:nth-child(1) { animation-delay: 0.2s; }
.news-card:nth-child(2) { animation-delay: 0.3s; }
.news-card:nth-child(3) { animation-delay: 0.4s; }
.news-card:nth-child(4) { animation-delay: 0.5s; }
.news-card:nth-child(5) { animation-delay: 0.6s; }
.news-card:nth-child(6) { animation-delay: 0.7s; }

.news-pagination,
.news-subscribe {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 0.8s;
}

/* 导航菜单打开时的背景锁定 */
body.menu-open {
    overflow: hidden;
}

body.menu-open::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 4;
    animation: fadeIn 0.3s ease forwards;
}

/* 滚动到顶部按钮 */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border: none;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.scroll-top-btn.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

@media (max-width: 768px) {
    .scroll-top-btn {
        width: 40px;
        height: 40px;
        bottom: 20px;
        right: 20px;
        font-size: 1rem;
    }
}

/* 联系我们高亮效果 */
#contact.highlight {
    animation: highlight-pulse 2s ease-in-out;
}

@keyframes highlight-pulse {
    0% { box-shadow: 0 0 0 0 rgba(52, 152, 219, 0.4); }
    50% { box-shadow: 0 0 0 20px rgba(52, 152, 219, 0); }
    100% { box-shadow: 0 0 0 0 rgba(52, 152, 219, 0); }
}

/* 联系我们页面样式 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    padding: 60px 0;
    text-align: center;
    position: relative;
    margin-top: 80px;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.breadcrumbs {
    font-size: 1rem;
}

.breadcrumbs a {
    color: var(--white);
    opacity: 0.8;
    text-decoration: none;
}

.breadcrumbs a:hover {
    opacity: 1;
}

.contact-page {
    padding: 80px 0;
    background-color: var(--primary-bg);
}

.contact-page .section-header {
    margin-bottom: 50px;
}

.map-section {
    margin-top: 60px;
}

.map-section h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    text-align: center;
}

.map-container {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.map-container img {
    width: 100%;
    height: auto;
    display: block;
}

/* DNA双螺旋时间轴样式 */
.dna-timeline {
    position: relative;
    max-width: 1200px;
    margin: 80px auto;
    padding: 40px 0;
    overflow: hidden;
}

.dna-strand {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.dna-strand::before {
    content: '';
    position: absolute;
    width: 6px;
    height: 100%;
    background: linear-gradient(to bottom, 
        rgba(52, 152, 219, 0.2), 
        rgba(52, 152, 219, 0.8) 20%, 
        rgba(52, 152, 219, 0.8) 80%, 
        rgba(52, 152, 219, 0.2)
    );
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    border-radius: 3px;
}

.dna-node {
    position: relative;
    width: 100%;
    margin: 30px 0;
    display: flex;
    align-items: center;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
    transition-delay: calc(var(--index, 0) * 0.15s);
}

.timeline-section.animate .dna-node {
    opacity: 1;
    transform: translateY(0);
}

.left-node {
    justify-content: flex-end;
}

.right-node {
    justify-content: flex-start;
}

.dna-content {
    width: 45%;
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
}

.dna-node:hover .dna-content {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.dna-content.product {
    border-left: 4px solid #3498db;
}

.dna-content.user {
    border-right: 4px solid #e74c3c;
}

.dna-content h3 {
    margin-top: 0;
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: #2c3e50;
}

.dna-content.product h3 {
    color: #3498db;
}

.dna-content.user h3 {
    color: #e74c3c;
}

.dna-content p {
    margin-bottom: 0;
    color: #7f8c8d;
    line-height: 1.6;
}

.dna-connector {
    position: relative;
    width: 10%;
    height: 3px;
    background: linear-gradient(
        to right,
        rgba(52, 152, 219, 0.8),
        rgba(231, 76, 60, 0.8)
    );
    z-index: 2;
}

.left-node .dna-connector {
    background: linear-gradient(
        to right,
        rgba(52, 152, 219, 0.8),
        rgba(52, 152, 219, 0.2)
    );
}

.right-node .dna-connector {
    background: linear-gradient(
        to right,
        rgba(231, 76, 60, 0.2),
        rgba(231, 76, 60, 0.8)
    );
}

.dna-node::after {
    content: attr(data-year);
    position: absolute;
    width: 60px;
    height: 30px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 15px;
    font-weight: bold;
    font-size: 0.9rem;
    z-index: 3;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    left: 50%;
    transform: translateX(-50%);
    transition: all 0.3s ease;
}

.dna-node:hover::after {
    transform: translateX(-50%) scale(1.1);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

/* DNA动画效果 */
@keyframes dna-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.dna-node::after {
    animation: dna-pulse 2s infinite ease-in-out;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .dna-content {
        width: 80%;
    }
    
    .dna-connector {
        width: 20%;
    }
    
    .dna-strand::before {
        left: 30px;
    }
    
    .dna-node {
        justify-content: flex-start !important;
        padding-left: 60px;
    }
    
    .dna-node::after {
        left: 30px;
        transform: translateX(-50%);
    }
    
    .dna-node:hover::after {
        transform: translateX(-50%) scale(1.1);
    }
}

/* 时间轴导航按钮 */
.timeline-nav {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 15px;
}

.timeline-nav-btn {
    padding: 10px 20px;
    background: transparent;
    border: 2px solid var(--primary-light);
    border-radius: 30px;
    color: var(--text-dark);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    outline: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.timeline-nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    z-index: -1;
    transition: transform 0.3s ease;
    transform: scaleX(0);
    transform-origin: right;
}

.timeline-nav-btn:hover, 
.timeline-nav-btn.active {
    color: var(--white);
    border-color: var(--primary-color);
}

.timeline-nav-btn:hover::before, 
.timeline-nav-btn.active::before {
    transform: scaleX(1);
    transform-origin: left;
}

/* 时间轴容器 */
.timeline-container {
    display: none;
    margin: 60px auto;
    max-width: 1200px;
    position: relative;
}

.timeline-container.active {
    display: block;
    animation: fadeIn 0.8s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 螺旋上升时间轴 */
.spiral-wrapper {
    position: relative;
    width: 100%;
    height: 800px;
    display: flex;
    justify-content: center;
    perspective: 1200px;
}

.spiral-center {
    position: absolute;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 20px rgba(52, 152, 219, 0.3);
    z-index: 10;
}

.spiral-node {
    position: absolute;
    width: 300px;
    transform-style: preserve-3d;
    opacity: 0;
    animation: spiralFadeIn 0.8s ease forwards;
    animation-delay: calc(var(--index, 0) * 0.2s);
}

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

.spiral-node:nth-child(2) { top: 10%; left: 50%; transform: translateX(-50%) rotate(0deg) translateY(-100px); }
.spiral-node:nth-child(3) { top: 25%; left: 75%; transform: translateX(-50%) rotate(60deg) translateY(-80px); }
.spiral-node:nth-child(4) { top: 50%; left: 85%; transform: translateX(-50%) rotate(120deg) translateY(-60px); }
.spiral-node:nth-child(5) { top: 75%; left: 75%; transform: translateX(-50%) rotate(180deg) translateY(-40px); }
.spiral-node:nth-child(6) { top: 90%; left: 50%; transform: translateX(-50%) rotate(240deg) translateY(-20px); }
.spiral-node:nth-child(7) { top: 75%; left: 25%; transform: translateX(-50%) rotate(300deg) translateY(0); }

.spiral-content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
    position: relative;
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.spiral-node:hover .spiral-content {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.spiral-content::before {
    content: attr(data-year);
    position: absolute;
    top: -15px;
    left: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 5px 15px;
    border-radius: 15px;
    font-weight: bold;
    font-size: 0.9rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.spiral-content h3 {
    margin-top: 0;
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.spiral-content p {
    margin-bottom: 0;
    color: #7f8c8d;
    line-height: 1.6;
}

/* 放射状时间轴 */
.radial-wrapper {
    position: relative;
    width: 100%;
    height: 800px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    max-width: 1200px;
    overflow: visible;
}

.radial-center {
    position: absolute;
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
    text-align: center;
    box-shadow: 0 0 30px rgba(52, 152, 219, 0.4);
    z-index: 10;
    animation: pulse 2s infinite ease-in-out;
    border: 4px solid rgba(255, 255, 255, 0.3);
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(52, 152, 219, 0.4); }
    50% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(52, 152, 219, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(52, 152, 219, 0); }
}

.radial-node {
    position: absolute;
    width: 250px;
    opacity: 0;
    animation: radialFadeIn 0.8s ease forwards;
    animation-delay: calc(var(--index, 0) * 0.2s);
}

@keyframes radialFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.radial-node[data-angle="0"] { top: 8%; left: 50%; transform: translateX(-50%); }
.radial-node[data-angle="60"] { top: 25%; right: 8%; transform: translateX(0); }
.radial-node[data-angle="120"] { top: 75%; right: 8%; transform: translateX(0); }
.radial-node[data-angle="180"] { top: 92%; left: 50%; transform: translateX(-50%); }
.radial-node[data-angle="240"] { top: 75%; left: 8%; transform: translateX(0); }
.radial-node[data-angle="300"] { top: 25%; left: 8%; transform: translateX(0); }

.radial-content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
    position: relative;
    transition: all 0.3s ease;
    border-top: 4px solid var(--primary-color);
    width: 280px;
    border-radius: 12px;
    overflow: hidden;
}

.radial-node:hover .radial-content {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-dark);
}

.radial-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
}

.radial-content::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), transparent);
    top: 50%;
    z-index: -1;
    animation: pulse 2s infinite ease-in-out;
}

.radial-node[data-angle="0"] .radial-content::after,
.radial-node[data-angle="180"] .radial-content::after {
    left: -60px;
    width: 60px;
}

.radial-node[data-angle="60"] .radial-content::after,
.radial-node[data-angle="120"] .radial-content::after,
.radial-node[data-angle="240"] .radial-content::after,
.radial-node[data-angle="300"] .radial-content::after {
    left: -80px;
    width: 80px;
    transform: rotate(45deg);
    transform-origin: right;
}

.radial-content h3 {
    margin-top: 0;
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.radial-content p {
    margin-bottom: 0;
    color: #7f8c8d;
    line-height: 1.6;
    font-size: 0.95rem;
    padding-left: 2px;
}

/* 莫比乌斯环时间轴 */
.mobius-wrapper {
    position: relative;
    width: 100%;
    height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1500px;
}

.mobius-strip {
    position: relative;
    width: 800px;
    height: 400px;
    transform-style: preserve-3d;
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    0% { transform: rotateY(-30deg) rotateX(20deg); }
    50% { transform: rotateY(30deg) rotateX(20deg); }
    100% { transform: rotateY(-30deg) rotateX(20deg); }
}

.mobius-node {
    position: absolute;
    width: 250px;
    height: auto;
    transform-style: preserve-3d;
    opacity: 0;
    animation: mobiusFadeIn 0.8s ease forwards;
    animation-delay: calc(var(--index, 0) * 0.2s);
}

@keyframes mobiusFadeIn {
    from { opacity: 0; transform: translateZ(-50px); }
    to { opacity: 1; transform: translateZ(0); }
}

.mobius-node[data-position="0"] { top: 0; left: 50%; transform: translate(-50%, -50%) rotateY(0deg) translateZ(200px); }
.mobius-node[data-position="1"] { top: 20%; left: 80%; transform: translate(-50%, -50%) rotateY(60deg) translateZ(200px); }
.mobius-node[data-position="2"] { top: 80%; left: 80%; transform: translate(-50%, -50%) rotateY(120deg) translateZ(200px); }
.mobius-node[data-position="3"] { top: 100%; left: 50%; transform: translate(-50%, -50%) rotateY(180deg) translateZ(200px); }
.mobius-node[data-position="4"] { top: 80%; left: 20%; transform: translate(-50%, -50%) rotateY(240deg) translateZ(200px); }
.mobius-node[data-position="5"] { top: 20%; left: 20%; transform: translate(-50%, -50%) rotateY(300deg) translateZ(200px); }

.mobius-content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
    position: relative;
    transition: all 0.3s ease;
    border: 2px solid var(--primary-light);
    transform-style: preserve-3d;
    backface-visibility: visible;
}

.mobius-content::before {
    content: attr(data-year);
    position: absolute;
    top: -15px;
    left: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 5px 15px;
    border-radius: 15px;
    font-weight: bold;
    font-size: 0.9rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.mobius-content h3 {
    margin-top: 0;
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.mobius-content p {
    margin-bottom: 0;
    color: #7f8c8d;
    line-height: 1.6;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .spiral-wrapper,
    .radial-wrapper,
    .mobius-wrapper {
        height: auto;
        flex-direction: column;
        align-items: center;
    }
    
    .spiral-node,
    .radial-node,
    .mobius-node {
        position: relative;
        width: 90%;
        max-width: 400px;
        margin: 20px 0;
        transform: none !important;
        top: auto !important;
        left: auto !important;
    }
    
    .radial-center {
        position: relative;
        margin-bottom: 30px;
    }
    
    .mobius-strip {
        width: 100%;
        height: auto;
        animation: none;
    }
}

/* 放射状时间轴连接线 */
.radial-connector {
    position: absolute;
    width: 150px;
    height: 2px;
    background: linear-gradient(to right, var(--primary-color), rgba(52, 152, 219, 0.1));
    top: 50%;
    left: 50%;
    transform-origin: left center;
    z-index: 1;
}

.timeline-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    font-weight: 500;
}

@keyframes rotate {
    0% { transform: rotateY(-30deg) rotateX(20deg); }
    50% { transform: rotateY(30deg) rotateX(20deg); }
    100% { transform: rotateY(-30deg) rotateX(20deg); }
}

.year-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 3px 10px;
    border-radius: 20px;
    margin-right: 10px;
    font-size: 0.9em;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.radial-content h3, .mobius-content h3 {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

/* 迷你展台互动模型 */
.mini-booth-section {
    padding: 80px 0;
    background-color: #f8f9fa;
    position: relative;
    overflow: hidden;
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
}

.mini-booth-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('images/pattern.png');
    opacity: 0.05;
    z-index: 0;
}

.mini-booth-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 0;
}

.mini-booth {
    position: relative;
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, #f5f7fa, #e4e8f0);
    border-radius: 20px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1000px;
    border: 2px solid #3498db;
}

.booth-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('images/booth-bg.jpg') center center/cover no-repeat;
    opacity: 0.3;
    z-index: 1;
}

.booth-element {
    position: absolute;
    width: 120px;
    height: 120px;
    background: white;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 2;
    transform: translateZ(20px);
    border: 2px solid rgba(52, 152, 219, 0.2);
}

.booth-element:hover {
    transform: translateZ(40px) scale(1.05);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
}

.element-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    transition: all 0.3s ease;
    background: rgba(52, 152, 219, 0.1);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.booth-element:hover .element-icon {
    transform: translateY(-5px);
}

.element-label {
    font-weight: bold;
    color: #333;
    font-size: 1rem;
    margin-bottom: 5px;
}

.element-hint {
    font-size: 0.8rem;
    color: #999;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.booth-element:hover .element-hint {
    opacity: 1;
    transform: translateY(0);
}

/* 展台元素位置 */
.info-desk {
    top: 50%;
    left: 25%;
    transform: translate(-50%, -50%) translateZ(20px);
}

.message-board {
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%) translateZ(20px);
}

.walkie-talkie {
    top: 50%;
    right: 25%;
    transform: translate(50%, -50%) translateZ(20px);
}

/* 模态框样式 */
.booth-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.booth-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    width: 90%;
    max-width: 600px;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transform: scale(0.9);
    transition: all 0.3s ease;
}

.booth-modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
}

.close-modal {
    font-size: 1.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.close-modal:hover {
    transform: rotate(90deg);
}

.modal-body {
    padding: 30px;
    max-height: 70vh;
    overflow-y: auto;
}

/* 留言墙样式 */
.message-wall {
    display: flex;
    flex-direction: column;
}

.message-list {
    margin-bottom: 30px;
    max-height: 300px;
    overflow-y: auto;
}

.message-item {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.message-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transform: translateY(-3px);
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.message-name {
    font-weight: bold;
    color: var(--primary-color);
}

.message-date {
    color: #999;
    font-size: 0.9rem;
}

.message-body p {
    margin: 0;
    color: #666;
    line-height: 1.6;
}

/* 电话咨询样式 */
.call-container {
    text-align: center;
    padding: 20px 0;
}

.call-icon {
    color: var(--primary-color);
    margin-bottom: 20px;
    animation: pulse 2s infinite ease-in-out;
}

.call-container h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.call-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.call-desc {
    color: #777;
    margin-bottom: 25px;
}

.call-btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.call-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(52, 152, 219, 0.4);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .mini-booth {
        height: 600px;
    }
    
    .booth-element {
        width: 100px;
        height: 100px;
    }
    
    .element-icon {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .mini-booth {
        height: 500px;
        flex-direction: column;
    }
    
    .info-desk {
        top: 25%;
        left: 50%;
        transform: translate(-50%, -50%) translateZ(20px);
    }
    
    .message-board {
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) translateZ(20px);
    }
    
    .walkie-talkie {
        top: 75%;
        left: 50%;
        transform: translate(-50%, -50%) translateZ(20px);
    }
    
    .modal-content {
        width: 95%;
    }
}

/* 高级联系表单样式 */
.contact-form-advanced {
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    position: relative;
    transition: all 0.5s ease;
    min-height: 550px;
}

.form-header {
    padding: 25px 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 15px 15px 0 0;
    position: relative;
}

.form-title {
    margin-bottom: 20px;
}

.form-title h3 {
    font-size: 1.8rem;
    margin-bottom: 5px;
    font-weight: 600;
}

.form-title p {
    font-size: 1rem;
    opacity: 0.9;
}

.form-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-top: 30px;
    padding: 0 10px;
}

.form-steps::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%);
    z-index: 1;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-bottom: 8px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.step.active .step-number {
    background: white;
    color: var(--primary-color);
    border: 2px solid white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transform: scale(1.1);
}

.step-label {
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.step.active .step-label {
    opacity: 1;
    font-weight: 600;
}

.form-body {
    padding: 30px;
}

.form-step {
    display: none;
    animation: fadeIn 0.5s ease;
}

.form-step.active {
    display: block;
}

.floating-label {
    position: relative;
    margin-bottom: 25px;
}

.floating-label input,
.floating-label textarea {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid #e1e1e1;
    border-radius: 8px;
    background: #f9f9f9;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.floating-label input:focus,
.floating-label textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    background: white;
    outline: none;
}

.floating-label label {
    position: absolute;
    top: 50%;
    left: 20px;
    transform: translateY(-50%);
    background: transparent;
    transition: all 0.3s ease;
    pointer-events: none;
    color: #999;
    padding: 0 5px;
}

.floating-label textarea ~ label {
    top: 25px;
    transform: none;
}

.floating-label input:focus ~ label,
.floating-label textarea:focus ~ label,
.floating-label input:not(:placeholder-shown) ~ label,
.floating-label textarea:not(:placeholder-shown) ~ label {
    top: -10px;
    left: 15px;
    font-size: 0.85rem;
    background: white;
    color: var(--primary-color);
    font-weight: 600;
}

.floating-label input:focus ~ label,
.floating-label textarea:focus ~ label {
    color: var(--primary-color);
}

.floating-label input.error,
.floating-label textarea.error {
    border-color: var(--accent-color);
    background-color: rgba(231, 76, 60, 0.05);
}

.floating-label input.error ~ label,
.floating-label textarea.error ~ label {
    color: var(--accent-color);
}

.required {
    color: var(--accent-color);
    margin-left: 3px;
}

.input-error {
    color: var(--accent-color);
    font-size: 0.85rem;
    margin-top: 5px;
    display: none;
}

.input-error.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.form-row .form-group {
    flex: 1;
}

.form-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.btn-next,
.btn-prev,
.btn-submit {
    padding: 12px 25px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.btn-next {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
    border: none;
    margin-left: auto;
}

.btn-next:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
}

.btn-prev {
    background: transparent;
    color: var(--text-dark);
    border: 1px solid #e1e1e1;
}

.btn-prev:hover {
    background: #f9f9f9;
    border-color: #d1d1d1;
}

.btn-submit {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white;
    box-shadow: 0 5px 15px rgba(46, 204, 113, 0.3);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(46, 204, 113, 0.4);
}

.btn-loading {
    display: none;
}

.btn-submit.loading .btn-text {
    opacity: 0;
}

.btn-submit.loading .btn-loading {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.select-label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--text-dark);
}

.custom-select {
    position: relative;
    margin-bottom: 25px;
}

.custom-select select {
    appearance: none;
    width: 100%;
    padding: 15px 20px;
    border: 1px solid #e1e1e1;
    border-radius: 8px;
    background: #f9f9f9;
    font-size: 1rem;
    cursor: pointer;
}

.custom-select select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    outline: none;
}

.custom-select select.error {
    border-color: var(--accent-color);
    background-color: rgba(231, 76, 60, 0.05);
}

.select-arrow {
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    pointer-events: none;
    color: #999;
    transition: all 0.3s ease;
}

.custom-select select:focus + .select-arrow {
    color: var(--primary-color);
}

.char-count {
    position: absolute;
    bottom: 10px;
    right: 15px;
    font-size: 0.85rem;
    color: #999;
}

.file-label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--text-dark);
}

.file-size {
    font-size: 0.85rem;
    color: #999;
    font-weight: normal;
}

.file-upload {
    position: relative;
    border: 2px dashed #e1e1e1;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    margin-bottom: 25px;
    background: #f9f9f9;
}

.file-upload:hover, .file-upload.highlight {
    border-color: var(--primary-color);
    background: rgba(52, 152, 219, 0.05);
}

.file-upload input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.file-placeholder i {
    font-size: 2.5rem;
    color: var(--primary-color);
    opacity: 0.7;
}

.file-placeholder span {
    font-weight: 500;
    color: var(--text-dark);
}

.file-info {
    font-size: 0.85rem;
    color: #999;
    margin-top: 5px;
}

.file-preview {
    display: none;
    margin-top: 15px;
}

.file-preview.show {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: white;
    padding: 10px 15px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    width: 100%;
    margin-bottom: 10px;
}

.file-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.file-name {
    flex: 1;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-remove {
    color: var(--accent-color);
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.file-remove:hover {
    transform: scale(1.1);
}

.summary-section {
    background: #f9f9f9;
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 25px;
}

.summary-section h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.summary-section p {
    font-size: 0.9rem;
    color: #777;
    margin-bottom: 20px;
}

.summary-content {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.summary-group {
    display: flex;
    border-bottom: 1px dashed #e1e1e1;
    padding-bottom: 10px;
}

.summary-label {
    width: 120px;
    font-weight: 600;
    color: var(--text-dark);
}

.summary-value {
    flex: 1;
    color: #555;
}

.summary-message {
    white-space: pre-line;
    line-height: 1.5;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 25px;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 3px;
    transition: all 0.3s ease;
}

.checkbox-group input[type="checkbox"].error {
    outline: 2px solid var(--accent-color);
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.2);
}

.checkbox-group label {
    flex: 1;
    font-size: 0.9rem;
    color: #555;
    line-height: 1.5;
}

.privacy-link {
    color: var(--primary-color);
    text-decoration: underline;
    transition: all 0.3s ease;
}

.privacy-link:hover {
    color: var(--primary-dark);
}

.form-success {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
    z-index: 10;
}

.form-success.show {
    opacity: 1;
    visibility: visible;
}

.success-icon {
    font-size: 5rem;
    color: #2ecc71;
    margin-bottom: 20px;
    animation: bounceIn 0.8s ease;
}

.form-success h3 {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.form-success p {
    font-size: 1rem;
    color: #777;
    text-align: center;
    margin-bottom: 30px;
}

.btn-new {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.btn-new:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
}

@keyframes bounceIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    60% {
        transform: scale(1.1);
        opacity: 1;
    }
    100% {
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .form-steps {
        padding: 0;
    }
    
    .step-label {
        font-size: 0.75rem;
    }
    
    .form-actions {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn-prev, .btn-next, .btn-submit {
        width: 100%;
        justify-content: center;
    }
    
    .summary-group {
        flex-direction: column;
        gap: 5px;
    }
    
    .summary-label {
        width: 100%;
    }
}

/* 分散式联系卡片样式 */
.contact-cards-container {
    margin: 50px 0;
    padding: 20px 0;
}

.contact-card-row {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.contact-card {
    width: 280px;
    height: 280px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('images/pattern.png');
    opacity: 0.05;
    z-index: 0;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, #f0f4f8, #d7e3f0);
    border-color: var(--primary-color);
}

.contact-card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
    box-shadow: 0 10px 20px rgba(52, 152, 219, 0.3);
    transition: all 0.4s ease;
}

.contact-card:hover .contact-card-icon {
    transform: scale(1.1);
    box-shadow: 0 15px 30px rgba(52, 152, 219, 0.4);
}

.contact-card-icon i {
    font-size: 2.5rem;
    color: white;
}

.contact-card-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 5px;
    position: relative;
    z-index: 1;
}

.contact-card-subtitle {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.contact-card-link {
    padding: 12px 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.2);
}

.contact-card-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.3);
    color: white;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .contact-card-row {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .contact-card {
        width: 100%;
        max-width: 320px;
        height: auto;
        padding: 25px;
    }
}

/* 添加聊天窗口样式 */
.chat-window {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 350px;
    height: 450px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.chat-window.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.chat-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-title {
    font-size: 1.2rem;
    font-weight: 600;
}

.chat-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.chat-close:hover {
    transform: rotate(90deg);
}

.chat-body {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f8f9fa;
}

.chat-message {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
}

.chat-bubble {
    max-width: 80%;
    padding: 12px 15px;
    border-radius: 15px;
    font-size: 0.95rem;
    line-height: 1.4;
}

.chat-message.user {
    align-items: flex-end;
}

.chat-message.bot {
    align-items: flex-start;
}

.chat-message.user .chat-bubble {
    background: var(--primary-color);
    color: white;
    border-bottom-right-radius: 5px;
}

.chat-message.bot .chat-bubble {
    background: white;
    color: var(--text-dark);
    border-bottom-left-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.chat-footer {
    padding: 15px;
    border-top: 1px solid #e9ecef;
    display: flex;
    align-items: center;
    background: white;
}

.chat-input {
    flex: 1;
    border: 1px solid #e1e1e1;
    border-radius: 30px;
    padding: 10px 15px;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s ease;
}

.chat-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.chat-send {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.chat-send:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}