/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

:root {
    --primary: #4a6ee0;
    --primary-dark: #3a5ac8;
    --secondary: #6c757d;
    --light: #f8f9fa;
    --dark: #343a40;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
}

body {
    background-color: #f5f7fb;
    color: #333;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

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

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: white;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
    color: var(--dark);
}

.section-subtitle {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.2rem;
    color: var(--secondary);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

/* 导航栏样式 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

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

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

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

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

.nav-links a {
    color: var(--dark);
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark);
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #4a6ee0 0%, #3a5ac8 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
}

.hero .btn {
    background-color: white;
    color: var(--primary);
}

.hero .btn:hover {
    background-color: rgba(255,255,255,0.9);
    color: var(--primary-dark);
}

.hero .btn-outline {
    background-color: transparent;
    border: 2px solid white;
    color: white;
}

.hero .btn-outline:hover {
    background-color: white;
    color: var(--primary);
}

/* 功能区域样式 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark);
}

/* 下载区域样式 */
.download-section {
    background-color: var(--light);
}

.platform-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.platform-card {
    background-color: white;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

.platform-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.platform-name {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark);
}

.version-info {
    color: var(--secondary);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

/* 博客区域样式 */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.blog-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

.blog-image {
    height: 200px;
    background-color: #eee;
    background-size: cover;
    background-position: center;
}

.blog-content {
    padding: 20px;
}

.blog-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--dark);
}

.blog-excerpt {
    color: var(--secondary);
    margin-bottom: 15px;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--secondary);
}

/* 博客文章样式 */
.article-header {
    background-color: var(--dark);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.article-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-size: 0.9rem;
    opacity: 0.8;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 50px 20px;
}

.article-content h2 {
    margin: 30px 0 15px;
    color: var(--dark);
}

.article-content p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.article-content ul, .article-content ol {
    margin-left: 20px;
    margin-bottom: 20px;
}

.article-content li {
    margin-bottom: 10px;
}

.article-image {
    width: 100%;
    margin: 30px 0;
    border-radius: 8px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 常见问题样式 */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: white;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    overflow: hidden;
}

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

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 20px 20px;
    max-height: 500px;
}

/* 页脚样式 */
footer {
    background-color: var(--dark);
    color: white;
    padding: 60px 0 30px;
}

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

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: white;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: rgba(255,255,255,0.7);
}

.footer-links a:hover {
    color: white;
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-wrap: wrap;
    }
    
    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        margin-top: 20px;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        margin: 10px 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .article-title {
        font-size: 2rem;
    }
}