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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 通用样式 */
.section {
    padding: 80px 0;
}

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

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1e293b;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

.highlight {
    color: #2563eb;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
    font-size: 1rem;
}

.btn-primary {
    background-color: #2563eb;
    color: white;
}

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
}

.btn-secondary {
    background-color: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-secondary:hover {
    background-color: #2563eb;
    color: white;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-outline:hover {
    background-color: #2563eb;
    color: white;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    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, 0.05);
    z-index: 1000;
    padding: 20px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
}

.logo i {
    color: #2563eb;
    margin-right: 10px;
    font-size: 1.8rem;
}

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    color: #1e293b;
    cursor: pointer;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-menu li {
    margin-left: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: #475569;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #2563eb;
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #2563eb;
}

/* 英雄区域 */
.hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    overflow: hidden;
}

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

.hero-content {
    flex: 1;
    min-width: 300px;
    padding-right: 40px;
}

.hero-title {
    font-family: 'Poppins', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #1e293b;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #64748b;
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.hero-image {
    flex: 1;
    min-width: 300px;
    position: relative;
}

.tech-illustration {
    position: relative;
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.circle-1 {
    width: 200px;
    height: 200px;
    top: -50px;
    left: -50px;
}

.circle-2 {
    width: 150px;
    height: 150px;
    bottom: -30px;
    right: -30px;
}

.circle-3 {
    width: 100px;
    height: 100px;
    top: 50%;
    right: 20%;
}

.tech-illustration i {
    position: absolute;
    font-size: 4rem;
    color: white;
    opacity: 0.8;
}

.tech-illustration i.fa-robot {
    top: 20%;
    left: 20%;
}

.tech-illustration i.fa-cloud {
    top: 60%;
    right: 20%;
}

.tech-illustration i.fa-code {
    bottom: 20%;
    left: 30%;
}

/* 关于我们 */
.about-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #1e293b;
}

.about-text p {
    color: #64748b;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.stats {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.stat h4 {
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 5px;
}

.stat p {
    color: #64748b;
    font-size: 0.9rem;
}

.about-image {
    flex: 1;
    min-width: 300px;
}

.image-placeholder {
    background: linear-gradient(135deg, #dbeafe, #e0e7ff);
    border-radius: 20px;
    height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #2563eb;
}

.image-placeholder i {
    font-size: 5rem;
    margin-bottom: 20px;
}

.image-placeholder p {
    font-size: 1.2rem;
    font-weight: 600;
}

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

.service-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    border-radius: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #1e293b;
}

.service-card p {
    color: #64748b;
    margin-bottom: 20px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.service-link:hover {
    color: #1d4ed8;
}

.service-link i {
    margin-left: 8px;
    transition: transform 0.3s ease;
}

.service-link:hover i {
    transform: translateX(5px);
}

/* 产品 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

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

.product-image {
    height: 200px;
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    display: flex;
    justify-content: center;
    align-items: center;
}

.product-image i {
    font-size: 5rem;
    color: white;
}

.product-content {
    padding: 30px;
}

.product-content h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #1e293b;
}

.product-content p {
    color: #64748b;
    margin-bottom: 20px;
}

.product-tags {
    display: flex;
    gap: 10px;
}

.tag {
    background-color: #dbeafe;
    color: #2563eb;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

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

.team-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

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

.team-avatar {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
}

.team-avatar i {
    font-size: 3rem;
    color: white;
}

.team-card h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
    color: #1e293b;
}

.team-role {
    color: #2563eb;
    font-weight: 600;
    margin-bottom: 15px;
}

.team-desc {
    color: #64748b;
    margin-bottom: 20px;
}

.team-social {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.team-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #f1f5f9;
    border-radius: 50%;
    color: #64748b;
    text-decoration: none;
    transition: all 0.3s ease;
}

.team-social a:hover {
    background-color: #2563eb;
    color: white;
}

/* 联系表单 */
.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
}

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

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.info-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.info-icon i {
    color: white;
    font-size: 1.2rem;
}

.info-text h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: #1e293b;
}

.info-text p {
    color: #64748b;
}

.contact-form {
    flex: 1;
    min-width: 300px;
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-group textarea {
    resize: vertical;
}

/* 页脚 */
.footer {
    background-color: #1e293b;
    color: #cbd5e1;
    padding: 80px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-col h4 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-col ul {
    list-style: none;
}

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

.footer-col ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: #2563eb;
}

.footer-desc {
    margin: 20px 0;
    line-height: 1.7;
}

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

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #334155;
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.social-links a:hover {
    background-color: #2563eb;
}

.newsletter {
    display: flex;
    margin-top: 15px;
}

.newsletter input {
    flex: 1;
    padding: 12px 15px;
    border: none;
    border-radius: 8px 0 0 8px;
    font-family: 'Inter', sans-serif;
}

.newsletter button {
    border-radius: 0 8px 8px 0;
    padding: 12px 20px;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

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

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #2563eb;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.8rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        background-color: white;
        flex-direction: column;
        align-items: center;
        padding: 30px 0;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 15px 0;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 50px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .about-content,
    .contact-content {
        flex-direction: column;
    }
    
    .stats {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
        text-align: center;
    }
    
    .services-grid,
    .products-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 25px;
    }
}