/* 适老化设计 */
body {
    font-family: "Microsoft YaHei", "SimHei", sans-serif;
    line-height: 1.6;
}

/* 字体大小类 */
.font-small {
    font-size: 14px;
}
.font-medium {
    font-size: 16px;
}
.font-large {
    font-size: 18px;
}

/* 高对比度模式 */
.high-contrast {
    background-color: #000 !important;
    color: #fff !important;
}
.high-contrast .card {
    background-color: #222 !important;
    color: #fff !important;
    border-color: #555 !important;
}
.high-contrast .navbar {
    background-color: #333 !important;
}
.high-contrast .btn-outline-primary {
    color: #fff !important;
    border-color: #fff !important;
}
.high-contrast .btn-outline-primary:hover {
    background-color: #fff !important;
    color: #000 !important;
}

/* 导航栏样式 */
.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
}

/* 服务图标 */
.service-icon {
    font-size: 3rem;
    color: #0d6efd;
    margin-bottom: 1rem;
}

/* 页脚样式 */
footer {
    background-color: #f8f9fa;
    padding: 2rem 0;
    margin-top: 3rem;
}

/* 辅助功能按钮 */
.accessibility-controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}
.accessibility-controls .btn {
    margin-left: 5px;
}

/* 紧急求助按钮 */
.emergency-help {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 1000;
}