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

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 导航栏 */
.navbar {
    background: #ffffff;
    color: #333;
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

.logo a {
    text-decoration: none;
    color: #333;
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 28px;
    font-weight: bold;
    color: #0066cc;
    font-family: 'Segoe UI', sans-serif;
}

.logo-subtext {
    font-size: 14px;
    color: #666;
    margin-top: 2px;
}

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

.nav-links li {
    margin-left: 40px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: #0066cc;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #0066cc;
    transition: width 0.3s ease;
}

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

/* 响应式导航栏 */
.menu-button {
    display: none;
    background: none;
    border: none;
    color: #333;
    font-size: 24px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .menu-button {
        display: block;
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-links.active {
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links li {
        margin: 15px 0;
    }
    
    .nav-links li a {
        font-size: 18px;
    }
}

/* 英雄区 */
.hero {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: #333;
    padding: 200px 0 150px;
    position: relative;
}

.hero .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hero-content {
    flex: 1;
    padding-right: 60px;
}

.hero h1 {
    font-size: 52px;
    margin-bottom: 25px;
    color: #0066cc;
    font-weight: bold;
    line-height: 1.2;
}

.hero p {
    font-size: 22px;
    margin-bottom: 40px;
    color: #666;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 25px;
}

.btn {
    padding: 15px 35px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn.primary {
    background: #0066cc;
    color: white;
}

.btn.primary:hover {
    background: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 102, 204, 0.3);
}

.btn.secondary {
    background: white;
    color: #0066cc;
    border: 2px solid #0066cc;
}

.btn.secondary:hover {
    background: #f0f8ff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 102, 204, 0.2);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.ai-animation {
    position: relative;
    width: 300px;
    height: 300px;
}

.ai-circle {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(45deg, #0066cc, #00aaff);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 30px rgba(0, 102, 204, 0.5);
}

.ai-pulse {
    width: 240px;
    height: 240px;
    border-radius: 50%;
    border: 2px solid #0066cc;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse-ring 3s infinite ease-out;
}

@keyframes pulse-ring {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}

/* 关于我们 */
.about {
    padding: 120px 0;
    background: white;
}

.about h2 {
    font-size: 40px;
    text-align: center;
    margin-bottom: 60px;
    color: #333;
    position: relative;
    font-weight: bold;
}

.about h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: #0066cc;
    border-radius: 2px;
}

.about-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 60px;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 25px;
    font-size: 18px;
    line-height: 1.8;
    color: #555;
}

.about-stats {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 40px 20px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.stat-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: #0066cc;
}

.stat-item i {
    font-size: 52px;
    color: #0066cc;
    margin-bottom: 25px;
}

.stat-item h3 {
    font-size: 40px;
    margin-bottom: 12px;
    color: #333;
    font-weight: bold;
}

.stat-item p {
    font-size: 16px;
    color: #666;
    font-weight: 500;
}

/* 产品介绍 */
.product {
    padding: 120px 0;
    background: #f8f9fa;
}

.product h2 {
    font-size: 40px;
    text-align: center;
    margin-bottom: 60px;
    color: #333;
    position: relative;
    font-weight: bold;
}

.product h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: #0066cc;
    border-radius: 2px;
}

.product-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.product-feature {
    background: white;
    padding: 45px 30px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.product-feature:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: #0066cc;
}

.feature-icon {
    width: 100px;
    height: 100px;
    background: #f0f8ff;
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 30px;
    color: #0066cc;
    font-size: 40px;
    transition: all 0.3s ease;
}

.product-feature:hover .feature-icon {
    background: #0066cc;
    color: white;
    transform: scale(1.1);
}

.product-feature h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: #333;
    font-weight: 600;
}

.product-feature p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

/* 核心功能 */
.features {
    padding: 120px 0;
    background: white;
}

.features h2 {
    font-size: 40px;
    text-align: center;
    margin-bottom: 60px;
    color: #333;
    position: relative;
    font-weight: bold;
}

.features h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: #0066cc;
    border-radius: 2px;
}

.features-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.feature-item {
    background: #f8f9fa;
    padding: 45px;
    border-radius: 12px;
    transition: all 0.3s ease;
    border-left: 5px solid #0066cc;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.feature-item:hover {
    transform: translateX(10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    background: #f0f8ff;
}

.feature-item h3 {
    font-size: 26px;
    margin-bottom: 20px;
    color: #333;
    font-weight: 600;
}

.feature-item p {
    font-size: 17px;
    color: #666;
    line-height: 1.6;
}

/* 联系我们 */
.contact {
    padding: 120px 0;
    background: #f8f9fa;
}

.contact h2 {
    font-size: 40px;
    text-align: center;
    margin-bottom: 60px;
    color: #333;
    position: relative;
    font-weight: bold;
}

.contact h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: #0066cc;
    border-radius: 2px;
}

.contact-content {
    display: flex;
    justify-content: center;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    width: 100%;
    max-width: 800px;
}

.info-item {
    display: flex;
    align-items: center;
    margin-bottom: 35px;
    padding: 25px;
    background: white;
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

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

.info-item i {
    font-size: 30px;
    color: #0066cc;
    margin-right: 25px;
    width: 50px;
    text-align: center;
}

.info-item p {
    font-size: 18px;
    color: #333;
    font-weight: 500;
}

.contact-form {
    flex: 1;
}

.contact-form form {
    background: white;
    padding: 50px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 18px;
    margin-bottom: 25px;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.contact-form textarea {
    height: 180px;
    resize: vertical;
}

/* 页脚 */
.footer {
    background: #333;
    color: white;
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
    margin-bottom: 50px;
}

.footer-logo .logo-text {
    font-size: 28px;
    font-weight: bold;
    color: white;
    margin-bottom: 15px;
}

.footer-logo p {
    font-size: 16px;
    opacity: 0.8;
    line-height: 1.6;
}

.footer-links h4,
.footer-social h4 {
    font-size: 20px;
    margin-bottom: 25px;
    color: white;
    font-weight: 600;
}

.footer-links ul,
.footer-social ul {
    list-style: none;
}

.footer-links li,
.footer-social li {
    margin-bottom: 15px;
}

.footer-links a,
.footer-social a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    font-size: 16px;
}

.footer-links a:hover,
.footer-social a:hover {
    color: white;
    padding-left: 5px;
}

.footer-social ul {
    display: flex;
    gap: 20px;
}

.footer-social li {
    margin-bottom: 0;
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: #0066cc;
    padding-left: 0;
    transform: translateY(-3px);
}

.footer-social i {
    font-size: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 40px;
    text-align: center;
    font-size: 16px;
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 60px;
    }
    
    .about-content {
        flex-direction: column;
        text-align: center;
    }
    
    .about-text {
        padding-right: 0;
        margin-bottom: 60px;
    }
    
    .product-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social ul {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 40px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .about h2,
    .product h2,
    .features h2,
    .contact h2 {
        font-size: 32px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .product-content {
        grid-template-columns: 1fr;
    }
    
    .contact-form form {
        padding: 30px;
    }
    
    .footer-content {
        gap: 40px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #0066cc;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0052a3;
}

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