/* 重置样式 */
* {
    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: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* 标题区样式 */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 50px 0;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.header h1 {
    font-size: 2.8rem;
    color: #4285f4;
    font-weight: 400;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    background: linear-gradient(135deg, #4285f4, #34a853);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 主下载区域样式 */
.main-download-section {
    max-width: 600px;
    margin: 0 auto;
}

.main-download-section h2 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 10px;
    font-weight: 500;
}

.main-download-section > p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 30px;
}

.main-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #4285f4, #34a853);
    color: white;
    padding: 18px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.3rem;
    transition: all 0.4s ease;
    box-shadow: 0 10px 30px rgba(66, 133, 244, 0.3);
    border: none;
    cursor: pointer;
    margin-bottom: 30px;
}

.main-download-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 40px rgba(66, 133, 244, 0.4);
    background: linear-gradient(135deg, #3367d6, #2e8b57);
}

.main-download-btn:active {
    transform: translateY(-2px) scale(1.02);
}

.btn-icon {
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-5px);
    }
    60% {
        transform: translateY(-3px);
    }
}

.download-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.stat-item {
    font-size: 0.9rem;
    color: #666;
    padding: 8px 16px;
    background: rgba(66, 133, 244, 0.1);
    border-radius: 20px;
    border: 1px solid rgba(66, 133, 244, 0.2);
}

/* 简介区样式 */
.intro {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 15px;
    margin-bottom: 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.intro h2 {
    font-size: 2rem;
    color: #4285f4;
    margin-bottom: 20px;
    font-weight: 300;
}

.intro p {
    font-size: 1.2rem;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 特性区样式 */
.features {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 15px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    color: #4285f4;
    margin-bottom: 40px;
    font-weight: 300;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.feature-item h3 {
    font-size: 1.4rem;
    color: #4285f4;
    margin-bottom: 15px;
    font-weight: 500;
}

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

/* 下载区样式 */
.download {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 15px;
    margin-bottom: 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.download h2 {
    font-size: 2rem;
    color: #4285f4;
    margin-bottom: 20px;
    font-weight: 300;
}

.download > p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 40px;
}

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

.download-item {
    padding: 30px 20px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.download-item:hover {
    transform: translateY(-3px);
}

.download-item h3 {
    font-size: 1.3rem;
    color: #4285f4;
    margin-bottom: 10px;
    font-weight: 500;
}

.download-item p {
    color: #666;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.download-btn {
    display: inline-block;
    background: #4285f4;
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid #4285f4;
}

.download-btn:hover {
    background: white;
    color: #4285f4;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(66, 133, 244, 0.3);
}

/* 官方网站引导区样式 */
.official-site {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 15px;
    margin-bottom: 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.official-site h2 {
    font-size: 1.8rem;
    color: #4285f4;
    margin-bottom: 20px;
    font-weight: 300;
}

.official-site p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.official-link {
    display: inline-block;
    background: #34a853;
    color: white;
    padding: 15px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: 2px solid #34a853;
}

.official-link:hover {
    background: white;
    color: #34a853;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 168, 83, 0.3);
}

/* 页脚样式 */
.footer {
    text-align: center;
    padding: 30px 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header {
        padding: 30px 0;
    }
    
    .header h1 {
        font-size: 2rem;
        margin-bottom: 20px;
    }
    
    .main-download-section h2 {
        font-size: 1.5rem;
    }
    
    .main-download-section > p {
        font-size: 1rem;
    }
    
    .main-download-btn {
        padding: 15px 30px;
        font-size: 1.1rem;
    }
    
    .download-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .intro h2,
    .features h2,
    .download h2,
    .official-site h2 {
        font-size: 1.6rem;
    }
    
    .intro p,
    .download > p,
    .official-site p {
        font-size: 1rem;
    }
    
    .feature-grid,
    .download-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .intro,
    .features,
    .download,
    .official-site {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.6rem;
    }
    
    .intro h2,
    .features h2,
    .download h2,
    .official-site h2 {
        font-size: 1.4rem;
    }
    
    .intro,
    .features,
    .download,
    .official-site {
        padding: 20px 15px;
    }
    
    .download-btn,
    .official-link {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}