/* 基本样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

header {
    background-color: #4CAF50; /* 绿色主题 */
    color: #fff;
    padding: 1.5rem 0;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    margin-bottom: 0.5rem;
}

main {
    max-width: 960px;
    margin: 2rem auto;
    padding: 0 1rem;
}

main h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: #333;
}

.file-list {
    background-color: #fff;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0.5rem;
    border-bottom: 1px solid #eee;
}

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

.file-info {
    display: flex;
    align-items: center;
}

.file-icon {
    margin-right: 1rem;
    font-size: 1.5rem; /* 模拟图标 */
    color: #4CAF50;
}

.file-details {
    line-height: 1.4;
}

.file-name {
    font-weight: bold;
}

.file-meta {
    font-size: 0.9rem;
    color: #666;
}

.file-actions {
    text-align: right;
}

.download-btn {
    display: inline-block;
    background-color: #007bff; /* 蓝色按钮 */
    color: #fff;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 5px;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

.download-btn:hover {
    background-color: #0056b3;
}

footer {
    text-align: center;
    padding: 1.5rem 0;
    background-color: #333;
    color: #fff;
    margin-top: 2rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .file-item {
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem 0;
    }

    .file-info {
        margin-bottom: 0.5rem;
    }

    .file-actions {
        width: 100%;
        text-align: left;
        margin-top: 0.5rem;
    }
}