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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #004080;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

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

.logo h1 {
    font-size: 24px;
    margin-left: 10px;
    color: #0066cc;
}

nav ul {
    display: flex;
    align-items: center;
}

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

nav ul li a {
    color: #333;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 4px;
}

nav ul li a:hover {
    background-color: #f0f0f0;
}

nav ul li a.active {
    color: #0066cc;
    background-color: #e6f0ff;
}

.language-switch a {
    padding: 5px 10px;
    background-color: #f0f0f0;
    border-radius: 4px;
    color: #333;
    font-weight: 500;
}

.language-switch a:hover {
    background-color: #e0e0e0;
}

/* 英雄区域样式 */
.hero {
    padding: 60px 0;
    background-color: #e6f0ff;
    margin-bottom: 40px;
}

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

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

.hero-content h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #0066cc;
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 30px;
    color: #555;
}

.app-store-button {
    display: inline-block;
    background-color: #0066cc;
    color: white;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 500;
    font-size: 16px;
    transition: background-color 0.3s ease;
}

.app-store-button:hover {
    background-color: #004080;
    color: white;
}

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

.hero-image img {
    max-height: 400px;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    margin: 16px;
}

/* 功能区域样式 */
.features {
    padding: 60px 0;
    background-color: #fff;
    margin-bottom: 40px;
}

.features h2 {
    font-size: 28px;
    text-align: center;
    margin-bottom: 40px;
    color: #333;
}

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

.feature {
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

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

.feature h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #0066cc;
}

.feature p {
    color: #666;
}

/* 关于区域样式 */
.about {
    padding: 60px 0;
    background-color: #f8f9fa;
    margin-bottom: 40px;
}

.about h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: #333;
}

.about p {
    font-size: 16px;
    margin-bottom: 20px;
    color: #555;
}

/* 页面内容样式 */
.content {
    padding: 60px 0;
    background-color: #fff;
    margin-bottom: 40px;
}

.content h1 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #0066cc;
}

.last-updated {
    color: #888;
    margin-bottom: 30px;
    font-style: italic;
}

.policy-section, .support-section {
    margin-bottom: 40px;
}

.policy-section h2, .support-section h2 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

.policy-section p, .support-section p {
    margin-bottom: 15px;
    color: #555;
}

.policy-section ul, .support-section ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.policy-section ul li, .support-section ul li {
    margin-bottom: 10px;
    list-style-type: disc;
    margin-left: 20px;
}

.faq-item {
    margin-bottom: 25px;
}

.faq-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #0066cc;
}

.faq-item p {
    color: #555;
}

/* 页脚样式 */
footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-logo p {
    margin-left: 10px;
    font-weight: 500;
}

.footer-links ul {
    display: flex;
    flex-wrap: wrap;
}

.footer-links ul li {
    margin-right: 20px;
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: #ecf0f1;
}

.footer-links ul li a:hover {
    color: #bdc3c7;
}

.language-selector {
    margin-bottom: 20px;
}

.language-selector a {
    color: #ecf0f1;
}

.language-selector a:hover {
    color: #bdc3c7;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 30px;
    }
    
    .hero-content h2 {
        font-size: 28px;
    }
    
    nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background-color: #fff;
        padding: 20px;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    
    nav ul.show {
        display: flex;
    }
    
    nav ul li {
        margin: 10px 0;
    }
    
    .footer-content {
        flex-direction: column;
    }
}