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

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

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.nav-logo img {
    height: 40px;
    width: auto;
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

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

.nav-link:hover {
    color: #2c5aa0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2c5aa0;
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅样式 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-text h2 {
    font-size: 1.8rem;
    font-weight: 300;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-text p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.8;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: flex-start;
}

.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
}

.btn-primary {
    background: #fff;
    color: #2c5aa0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

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

.btn-secondary:hover {
    background: #fff;
    color: #2c5aa0;
    transform: translateY(-2px);
}

/* 技术动画 */
.tech-animation {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.gear {
    position: absolute;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: rotate 10s linear infinite;
}

.gear1 {
    width: 120px;
    height: 120px;
    top: 50px;
    left: 50px;
    border-color: rgba(255, 255, 255, 0.4);
}

.gear2 {
    width: 80px;
    height: 80px;
    top: 120px;
    left: 200px;
    animation-direction: reverse;
    animation-duration: 8s;
}

.gear3 {
    width: 100px;
    height: 100px;
    top: 200px;
    left: 100px;
    animation-duration: 12s;
}

.cloud-icon {
    position: absolute;
    top: 50px;
    right: 50px;
    width: 60px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    animation: float 3s ease-in-out infinite;
}

.cloud-icon::before {
    content: '';
    position: absolute;
    top: -15px;
    left: 10px;
    width: 30px;
    height: 30px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}

.cloud-icon::after {
    content: '';
    position: absolute;
    top: -10px;
    right: 10px;
    width: 25px;
    height: 25px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}

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

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* 统计数据 */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    position: relative;
    z-index: 2;
}

.stat-item {
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 1.1rem;
    opacity: 0.8;
}

/* 服务部分 */
.services {
    padding: 100px 0;
    background: #f8f9fa;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 2.8rem;
    font-weight: 700;
    color: #2c5aa0;
    margin-bottom: 20px;
}

.section-header p {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

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

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 90px;
    height: 90px;
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.service-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c5aa0;
    margin-bottom: 20px;
}

.service-card p {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.6;
}

.service-card ul {
    list-style: none;
    text-align: left;
}

.service-card li {
    padding: 8px 0;
    color: #666;
    position: relative;
    padding-left: 20px;
}

.service-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #2c5aa0;
    font-weight: bold;
}

/* 云平台部分 */
.cloud-platform {
    padding: 100px 0;
    background: #fff;
}

.platform-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.platform-features {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.feature-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2c5aa0;
    margin-bottom: 10px;
}

.feature-content p {
    color: #666;
    line-height: 1.6;
}

/* 平台架构图 */
.platform-diagram {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.diagram-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.cloud-layer {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.cloud-layer h4 {
    color: #2c5aa0;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.app-boxes, .platform-boxes, .infra-boxes {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.app-box, .platform-box, .infra-box {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    padding: 10px 15px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* 成功案例 */
.cases {
    padding: 100px 0;
    background: #f8f9fa;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.case-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
}

.case-image {
    height: 200px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-overlay {
    text-align: center;
    color: #fff;
}

.case-overlay h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.case-content {
    padding: 30px;
}

.case-content h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2c5aa0;
    margin-bottom: 15px;
}

.case-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

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

.tag {
    background: #e3f2fd;
    color: #2c5aa0;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background: #fff;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c5aa0;
    margin-bottom: 30px;
}

.about-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 40px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
}

.feature i {
    color: #2c5aa0;
    font-size: 1.2rem;
}

.feature span {
    font-weight: 500;
    color: #333;
}

/* 团队插图 */
.team-illustration {
    position: relative;
    width: 400px;
    height: 300px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    margin: 0 auto;
}

.person {
    position: absolute;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: float 3s ease-in-out infinite;
}

.person1 {
    top: 50px;
    left: 50px;
    animation-delay: 0s;
}

.person2 {
    top: 100px;
    right: 80px;
    animation-delay: 1s;
}

.person3 {
    bottom: 80px;
    left: 100px;
    animation-delay: 2s;
}

.tech-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.element {
    position: absolute;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    animation: pulse 2s ease-in-out infinite;
}

.element1 {
    width: 20px;
    height: 20px;
    top: 30px;
    right: 30px;
    animation-delay: 0.5s;
}

.element2 {
    width: 15px;
    height: 15px;
    bottom: 50px;
    right: 50px;
    animation-delay: 1.5s;
}

.element3 {
    width: 25px;
    height: 25px;
    top: 80px;
    left: 30px;
    animation-delay: 2.5s;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.5rem;
    color: #fff;
}

.contact-details h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2c5aa0;
    margin-bottom: 10px;
}

.contact-details p {
    color: #666;
    line-height: 1.6;
}

/* 联系表单 */
.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    max-width: 680px;
    margin: 0 auto;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 18px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1.05rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2c5aa0;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: #fff;
}

.footer-section p {
    color: #bdc3c7;
    line-height: 1.6;
    margin-bottom: 15px;
}

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

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

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #fff;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #34495e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #2c5aa0;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #fff;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .hero-text h2 {
        font-size: 1.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .platform-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .tech-animation {
        width: 300px;
        height: 300px;
    }
    
    .team-illustration {
        width: 300px;
        height: 200px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2.2rem;
    }
    
    .service-card,
    .contact-form {
        padding: 30px 20px;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 1rem;
    }
}