* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    padding-top: 80px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0; /* 添加这行以解决白线问题 */
}

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

@media (max-width: 1200px) {
    .container {
        width: 100%;
        padding: 0 20px;
    }
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem 0;
}

section {
    padding: 2rem 0;
}

/* 页面标题样式 */
.page-title {
    text-align: center;
    font-size: 2.5rem;
    color: #3498db;
    margin-bottom: 3rem;
}

/* 下载平台容器 */
.platforms-container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
}

/* 单个平台卡片样式 */
.platform-card {
    flex: 1;
    min-width: 300px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease;
}

.platform-card:hover {
    transform: translateY(-10px);
}

.platform-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    background-color: #f1f1f1;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: #3498db;
}

.platform-title {
    font-size: 1.8rem;
    color: #3498db;
    margin-bottom: 1rem;
}

.platform-description {
    font-size: 1rem;
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.download-button {
    display: inline-block;
    background-color: #3498db;
    color: white;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease;
    border: 2px solid #3498db;
    cursor: pointer;
}

.download-button:hover {
    background-color: #fff;
    color: #3498db;
}

/* 特殊说明样式 */
.special-note {
    background-color: #e1f0fa;
    border-left: 4px solid #3498db;
    padding: 1rem;
    margin-top: 2rem;
    border-radius: 0 5px 5px 0;
}

.special-note p {
    margin: 0;
    color: #1d6fa5;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .platforms-container {
        flex-direction: column;
        align-items: center;
    }
    
    .platform-card {
        width: 100%;
        max-width: 400px;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .platform-title {
        font-size: 1.5rem;
    }
    
    body {
        padding-top: 60px;
    }
}

/* 弹窗样式 */
.popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.popup-content {
    background-color: #fff;
    padding: 20px 40px;
    border-radius: 10px;
    text-align: center;
    font-size: 1.2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    animation: popupFadeIn 0.3s ease;
}

@keyframes popupFadeIn {
    from {opacity: 0; transform: translateY(-20px);}
    to {opacity: 1; transform: translateY(0);}
}