/* 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: #fff;
}

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

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

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #000;
    text-decoration: none;
}

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

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

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

.nav-links a:hover {
    color: #007bff;
}

/* 英雄区域样式 */
.hero {
    background-color: #f9f9f9;
    padding: 150px 0 100px;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #000;
}

.hero p {
    font-size: 18px;
    color: #666;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    background-color: #4285f4;
    color: #fff;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.cta-button:hover {
    background-color: #3367d6;
    transform: translateY(-2px);
}

/* 功能介绍样式 */
.features {
    padding: 100px 0;
}

.section-title {
    font-size: 36px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 60px;
    color: #000;
}

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

.feature-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 48px;
    color: #4285f4;
    margin-bottom: 20px;
    text-align: center;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #000;
    text-align: center;
}

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

/* 开发模式样式 */
.modes {
    background-color: #f9f9f9;
    padding: 100px 0;
}

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

.mode-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.mode-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.mode-card h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #000;
    text-align: center;
}

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

/* 应用场景样式 */
.scenarios {
    padding: 100px 0;
}

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

.scenario-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.scenario-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.scenario-card h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #000;
    text-align: center;
}

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

/* 页脚样式 */
footer {
    background-color: #f9f9f9;
    padding: 60px 0;
    border-top: 1px solid #eaeaea;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.footer-column {
    flex: 1;
    min-width: 200px;
    margin-bottom: 40px;
}

.footer-column h4 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #000;
}

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

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

.footer-column ul li a {
    text-decoration: none;
    color: #666;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: #007bff;
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid #eaeaea;
    color: #666;
}

/* 下载页样式 */
.download-section {
    padding: 150px 0 100px;
    text-align: center;
}

.download-section h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #000;
}

.download-section p {
    font-size: 18px;
    color: #666;
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.download-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.download-card h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #000;
    text-align: center;
}

.download-card p {
    color: #666;
    margin-bottom: 30px;
    text-align: center;
}

.download-button {
    display: inline-block;
    background-color: #4285f4;
    color: #fff;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.download-button:hover {
    background-color: #3367d6;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .nav-links {
        display: none;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-column {
        margin-bottom: 40px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 系统要求样式 */
.system-requirements {
    margin-top: 60px;
}

.system-requirements h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #000;
    text-align: center;
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 30px;
}

.requirement-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.requirement-card h4 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #000;
}

.requirement-card ul {
    list-style: none;
    margin-left: 20px;
}

.requirement-card li {
    margin-bottom: 10px;
    position: relative;
}

.requirement-card li:before {
    content: "•";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: -20px;
}

/* 安装指南样式 */
.installation-guide {
    margin-top: 60px;
}

.installation-guide h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 30px;
    color: #000;
    text-align: center;
}

.guide-section {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.guide-section h4 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #000;
}

.guide-section ol {
    margin-left: 20px;
}

.guide-section li {
    margin-bottom: 10px;
}

.guide-section code {
    background-color: #f5f5f5;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    color: #d32f2f;
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* 延迟动画 */
.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

.delay-4 {
    animation-delay: 0.8s;
}

.delay-5 {
    animation-delay: 1s;
}