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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: #333;
    line-height: 1.6;
    background-color: #f5f5f5;
}

/* 容器样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

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

.logo img {
    width: 40px;
    height: 40px;
    margin-right: 10px;
}

.logo h1 {
    font-size: 24px;
    color: #1a73e8;
    font-weight: 600;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #1a73e8;
}

.download-btn {
    background-color: #1a73e8;
    color: white;
    padding: 10px 20px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.download-btn:hover {
    background-color: #1557b0;
    color: white;
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #1a73e8 0%, #66a0ff 100%);
    color: white;
    padding: 80px 0;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-text {
    flex: 1;
}

.hero h2 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 20px;
    margin-bottom: 40px;
    max-width: 600px;
}

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

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

.hero-image svg {
    max-width: 100%;
    height: auto;
    animation: float 3s ease-in-out infinite;
}

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

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero p {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    .hero h2 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons a {
        width: 200px;
        text-align: center;
    }
}

.primary-btn {
    background-color: white;
    color: #1a73e8;
    padding: 15px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: transform 0.3s ease;
}

.primary-btn:hover {
    transform: translateY(-3px);
}

.secondary-btn {
    background-color: transparent;
    color: white;
    padding: 15px 30px;
    border: 2px solid white;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.secondary-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

/* 特性区域样式 */
.features {
    padding: 80px 0;
    background-color: white;
}

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

.section-title h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #333;
}

.section-title p {
    font-size: 18px;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature-item {
    text-align: center;
    padding: 30px;
    border-radius: 8px;
    background-color: #f9f9f9;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background-color: #e8f0fe;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon img {
    width: 40px;
    height: 40px;
}

.feature-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.feature-item p {
    color: #666;
    font-size: 16px;
}

/* 优势区域样式 */
.advantages {
    padding: 80px 0;
    background-color: #f5f5f5;
}

.advantage-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 60px;
}

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

.advantage-image {
    flex: 1;
}

.advantage-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.advantage-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #333;
}

.advantage-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
}

.advantage-list {
    list-style: none;
}

.advantage-list li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    font-size: 16px;
    color: #333;
}

.advantage-list li:before {
    content: '✓';
    color: #1a73e8;
    font-size: 20px;
    margin-right: 10px;
}

/* 常见问题样式 */
.faq-section {
    padding: 80px 0;
    background-color: white;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.faq-question {
    padding: 20px 0;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #333;
}

.faq-question:hover {
    color: #1a73e8;
}

.faq-question:after {
    content: '+';
    font-size: 24px;
    font-weight: 300;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question:after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    font-size: 16px;
    color: #666;
    line-height: 1.8;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: 20px;
}

/* 关于我们样式 */
.about-section {
    padding: 80px 0;
    background-color: white;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-content h3 {
    font-size: 28px;
    margin-bottom: 30px;
    color: #333;
}

.about-content p {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.8;
}

.team-section {
    padding: 60px 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.team-member {
    text-align: center;
}

.team-member img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin-bottom: 20px;
    object-fit: cover;
    border: 3px solid #e8f0fe;
}

.team-member h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

.team-member p {
    font-size: 14px;
    color: #666;
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: white;
}

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

.footer-column ul li {
    margin-bottom: 15px;
}

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

.footer-column ul li a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 30px;
    text-align: center;
    color: #ddd;
    font-size: 14px;
}

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

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #555;
    color: white;
    transition: background-color 0.3s ease;
}

.social-links a:hover {
    background-color: #1a73e8;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero h2 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .advantage-content {
        flex-direction: column;
    }
    
    .advantage-text {
        padding-right: 0;
        margin-bottom: 30px;
        text-align: center;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .header-container {
        flex-direction: column;
        padding: 15px 0;
    }
    
    nav ul {
        margin-top: 15px;
    }
    
    nav ul li {
        margin-left: 15px;
        margin-right: 15px;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 28px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 5px 10px;
    }
}