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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

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

a {
    text-decoration: none;
    color: #4285f4;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2.2rem;
    color: #333;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn.primary {
    background-color: #4285f4;
    color: white;
}

.btn.primary:hover {
    background-color: #3367d6;
}

.btn.secondary {
    background-color: white;
    color: #4285f4;
    border: 2px solid #4285f4;
}

.btn.secondary:hover {
    background-color: #f0f7ff;
}

/* 头部样式 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 15px 0;
}

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

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

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

.logo h1 {
    font-size: 1.5rem;
    color: #4285f4;
}

nav ul {
    display: flex;
}

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

nav ul li a {
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #4285f4;
}

/* 英雄区域样式 */
.hero {
    padding: 80px 0;
    background-color: #f0f7ff;
}

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

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

.hero-content h2 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    color: #333;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #666;
}

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

.hero-image {
    flex: 1;
}

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

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

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

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

.feature-icon {
    margin-bottom: 20px;
}

.feature-icon img {
    height: 60px;
}

.feature-card h3 {
    margin-bottom: 15px;
    color: #333;
}

.feature-card p {
    color: #666;
}

/* 下载区域样式 */
.download {
    padding: 80px 0;
    background-color: #f0f7ff;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

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

.download-card h3 {
    margin-bottom: 15px;
    color: #333;
}

.download-card p {
    margin-bottom: 20px;
    color: #666;
}

.download-card small {
    display: block;
    margin-top: 10px;
    color: #999;
}

.install-steps {
    margin-top: 20px;
    text-align: left;
}

.install-steps h4 {
    margin-bottom: 10px;
    color: #333;
}

.install-steps ol {
    padding-left: 20px;
}

.install-steps li {
    margin-bottom: 5px;
    color: #666;
}

/* FAQ区域样式 */
.faq {
    padding: 80px 0;
    background-color: white;
}

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

.faq-item {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #eee;
}

.faq-item:last-child {
    border-bottom: none;
}

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

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

/* 页脚样式 */
footer {
    background-color: #333;
    color: white;
    padding: 60px 0 20px;
}

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

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo img {
    height: 40px;
    margin-bottom: 15px;
}

.footer-logo h2 {
    font-size: 1.5rem;
    color: white;
}

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

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

.footer-links ul li a {
    color: #ccc;
    transition: color 0.3s ease;
}

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

.footer-contact p {
    margin-bottom: 10px;
    color: #ccc;
}

.footer-contact a {
    color: #4285f4;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 40px;
        text-align: center;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .feature-grid,
    .download-options,
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-logo {
        align-items: center;
    }
}