/* 通用样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    background-color: #f5f5f5;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
}

input, button {
    outline: none;
    border: none;
    background: none;
}

/* 底部导航栏 */
.bottom-tab-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #fff;
    display: flex;
    justify-content: space-around;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    padding: 8px 0;
    z-index: 100;
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: #999;
    width: 25%;
}

.tab-item.active {
    color: #4a90e2;
}

.tab-icon {
    font-size: 20px;
    margin-bottom: 3px;
}

.tab-name {
    font-size: 12px;
}

/* 加载提示 */
.loading-tip {
    text-align: center;
    padding: 20px;
    color: #999;
}