html {
    height: 100%;
}

body {
    margin: 0;
    padding: 0;
    background-color: #e8f5e9; /* 浅绿色背景 */
     font-family: -apple-system, BlinkMacSystemFont, 
                "Microsoft YaHei", "PingFang SC",  /* 新增中文字体 */
                'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 
                'Open Sans', 'Helvetica Neue', sans-serif;
    min-height: 100vh;
    display: flex;
	flex-direction: column; /* 垂直排列子元素 */
    justify-content: center;
    align-items: center;
}

.container {
    text-align: center;
    padding: 2rem;
	flex-grow: 1; /* 让容器占据剩余空间 */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.title {
    color: #2e7d32;
    margin-bottom: 2rem;
    font-size: 2.5em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.button-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 500px;
    margin: 0 auto;
}

.button {
    display: block;
    padding: 1.5rem 2rem;
    text-decoration: none;
    font-size: 1.2em;
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    color: white;
    font-weight: bold;
}

/* 定义颜色变量 */
:root {
    --green: #4CAF50;
    --red: #EF5350;
    --blue: #2196F3;
    --purple: #7E57C2;
    --mint: #4DB6AC;
    --pink: #FFEBEE;
}

.download-btn {
    background-color: #4CAF50; /* 绿色按钮 */
}

.download2-btn {
    background-color: #EF5350; /* 红色 */
}

.wechat-btn {
    background-color: #2196F3; /* 蓝色按钮 */
}

.ydyh2-btn {
    background-color: #7E57C2; /* 莫兰迪紫 */
}

.ydyh-btn {
    background-color: #4DB6AC; /* 薄荷青 */
}

.ydyh3-btn {
    background-color: #FFEBEE; /* 浅粉色 */
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.2);
}

.button:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.footer {
    padding: 1rem;
    background-color: rgba(232, 245, 233, 0.9); /* 半透明浅绿背景 */
    text-align: center;
    font-size: 12px;
    color: #666;
    border-top: 1px solid #dcedc8;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.05);
    width: 100%; /* 让页脚宽度占满 */
}