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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    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 4px 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: 15px 20px;
}

.logo img {
    height: 40px;
}

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

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

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

nav ul li a:hover {
    color: #1E88E5;
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #1E88E5 0%, #2196F3 100%);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-primary {
    background-color: #fff;
    color: #1E88E5;
    padding: 15px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: #f5f5f5;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.btn-secondary {
    background-color: transparent;
    color: #fff;
    padding: 15px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 2px solid #fff;
    cursor: pointer;
}

.btn-secondary:hover {
    background-color: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

/* 产品优势区域样式 */
.features {
    padding: 100px 0;
    background-color: #fff;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

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

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.feature-item img {
    height: 80px;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #333;
}

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

/* 下载区域样式 */
.download-section {
    padding: 100px 0;
    background-color: #f5f5f5;
}

.download-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #333;
}

.download-section p {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 60px;
    color: #666;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.download-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.download-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.download-item img {
    height: 60px;
    margin-bottom: 20px;
}

.download-item h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #333;
}

.download-item p {
    color: #666;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.btn-download {
    display: inline-block;
    background-color: #1E88E5;
    color: #fff;
    padding: 10px 20px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.btn-download:hover {
    background-color: #1976D2;
    transform: translateY(-2px);
}

/* 新闻动态区域样式 */
.news {
    padding: 100px 0;
    background-color: #fff;
}

.news h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.news-item {
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.news-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #333;
}

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

.news-item a {
    color: #1E88E5;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.news-item a:hover {
    color: #1976D2;
    text-decoration: underline;
}

/* 页面英雄区域样式 */
.page-hero {
    background: linear-gradient(135deg, #1E88E5 0%, #2196F3 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.page-hero p {
    font-size: 1.1rem;
    margin-bottom: 0;
}

/* 产品分类样式 */
.product-categories {
    padding: 100px 0;
    background-color: #fff;
}

.category-card {
    display: flex;
    align-items: center;
    margin-bottom: 60px;
    padding: 40px;
    background-color: #f9f9f9;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.category-card.reverse {
    flex-direction: row-reverse;
}

.category-content {
    flex: 1;
    padding: 0 40px;
}

.category-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: #333;
}

.category-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #666;
    line-height: 1.6;
}

.category-content ul {
    margin-bottom: 30px;
    list-style: none;
}

.category-content ul li {
    margin-bottom: 10px;
    color: #666;
    position: relative;
    padding-left: 25px;
}

.category-content ul li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #1E88E5;
    font-weight: bold;
}

.category-image {
    flex: 1;
    max-width: 500px;
}

.category-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

/* 产品功能样式 */
.product-features {
    padding: 100px 0;
    background-color: #f5f5f5;
}

.product-features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

/* 产品对比样式 */
.product-comparison {
    padding: 100px 0;
    background-color: #fff;
}

.product-comparison h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.comparison-table {
    overflow-x: auto;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background-color: #f9f9f9;
    border-radius: 8px;
    overflow: hidden;
}

.comparison-table th,
.comparison-table td {
    padding: 15px;
    text-align: center;
    border-bottom: 1px solid #eee;
}

.comparison-table th {
    background-color: #1E88E5;
    color: #fff;
    font-weight: 600;
}

.comparison-table tr:hover {
    background-color: rgba(30, 136, 229, 0.05);
}

/* 下载平台样式 */
.download-platforms {
    padding: 100px 0;
    background-color: #fff;
}

.platform-card {
    display: flex;
    align-items: center;
    margin-bottom: 40px;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.platform-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.platform-icon {
    flex-shrink: 0;
    margin-right: 30px;
}

.platform-icon img {
    height: 80px;
}

.platform-info {
    flex: 1;
}

.platform-info h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #333;
}

.platform-info p {
    font-size: 1rem;
    margin-bottom: 20px;
    color: #666;
}

.version-info {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 25px;
    gap: 20px;
}

.version-info span {
    color: #666;
    font-size: 0.9rem;
}

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

/* 下载指南样式 */
.download-guide {
    padding: 100px 0;
    background-color: #f5f5f5;
}

.download-guide h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.guide-steps {
    max-width: 800px;
    margin: 0 auto;
}

.step-item {
    display: flex;
    margin-bottom: 40px;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background-color: #1E88E5;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: bold;
    margin-right: 25px;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #333;
}

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

/* 下载常见问题样式 */
.download-faq {
    padding: 100px 0;
    background-color: #fff;
}

.download-faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

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

.faq-item {
    margin-bottom: 30px;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.faq-item h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #333;
}

.faq-item p {
    color: #666;
    line-height: 1.6;
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: #fff;
    padding: 80px 0 40px;
}

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

.link-group h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: #fff;
}

.link-group ul {
    list-style: none;
}

.link-group ul li {
    margin-bottom: 10px;
}

.link-group ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.link-group ul li a:hover {
    color: #fff;
}

.copyright {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid #444;
    color: #999;
}

.copyright p {
    margin-bottom: 10px;
}

.copyright a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.copyright a:hover {
    color: #fff;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        padding: 15px;
    }

    nav ul {
        margin-top: 15px;
    }

    nav ul li {
        margin-left: 20px;
        margin-right: 20px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .features h2,
    .download-section h2,
    .news h2 {
        font-size: 2rem;
    }

    .feature-grid,
    .download-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 0.9rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .features h2,
    .download-section h2,
    .news h2 {
        font-size: 1.8rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

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

.feature-item,
.download-item,
.news-item {
    animation: fadeIn 0.6s ease forwards;
}

.feature-item:nth-child(1) { animation-delay: 0.1s; }
.feature-item:nth-child(2) { animation-delay: 0.2s; }
.feature-item:nth-child(3) { animation-delay: 0.3s; }
.feature-item:nth-child(4) { animation-delay: 0.4s; }

.download-item:nth-child(1) { animation-delay: 0.1s; }
.download-item:nth-child(2) { animation-delay: 0.2s; }
.download-item:nth-child(3) { animation-delay: 0.3s; }
.download-item:nth-child(4) { animation-delay: 0.4s; }

.news-item:nth-child(1) { animation-delay: 0.1s; }
.news-item:nth-child(2) { animation-delay: 0.2s; }
.news-item:nth-child(3) { animation-delay: 0.3s; }