:root {
    --background-color: white;
    --green-color: #25b85b;
    --blue-color: #2573b8;
    --orange-color: #b87b25;
    --red-color: #b82c25;
    --yellow-color: #b2b825;
    --purple-color: #8925b8;
    --pink-color: #b825b6;
    
    --most-light-gray-color: #eee;
    --light-gray-color: #ccc;
    --gray-color: #999;
    --deep-gray-color: #666;
    --black-color: #333;
    
    --page-padding: 8px;
    --item-margin: 10px;
    --item-padding: 10px;
    --button-margin: 16px;
    --button-padding: 16px;
    --line-height: 1.5;
    
    --title-big-font-size: 22px;
    --content-font-size: 16px;
    --info-font-size: 14px; 
    --desc-font-size: 12px; 
    
    --round-radius: 2px;
    --main-max-width: 900px;

    --side-bar-width: 260px;
}

body {
    background-color: var(--most-light-gray-color);
    padding: 0;
    margin: 0;
    /* max-width: 900px; */
}

.menu {
   
    /* border-bottom: 1px solid var(--light-gray-color); */
    background-color: white;
}

.menu-main {
    display: flex;
    flex-direction: row;
    padding: var(--page-padding);
    justify-content: space-between;
    margin: 0 auto;
    max-width: var(--main-max-width);
    height: 50px;
    line-height: 50px;
}

.menu-logo {
    display: flex;
    flex-direction: row;
    font-weight: bold;
    font-size: var(--title-big-font-size);
}

.menu-logo-text {
    color: var(--deep-gray-color);
}

.menu-desc {
    margin-left: calc(var(--item-margin) * 2);
    font-size: var(--info-font-size);
    color: var(--deep-gray-color);
    text-shadow: 1px 1px 2px var(--light-gray-color);
    /* background-color: #2573b8; */
}

.menu-items {
    display: flex;
    flex-direction: row;
    /* flex: 1; */
    text-align: center;
    
    /* background-color: #2573b8; */
}

.menu-item {
    font-size: var(--content-font-size);
    margin: 0 var(--item-margin);
    font-weight: bold;
    color: var(--deep-gray-color);
    text-decoration: none;
}

.container {
    display: flex;
    flex-direction: row;
    margin: var(--item-margin) auto;
    /* padding: var(--page-padding); */
    max-width: var(--main-max-width);
}

.left {
    flex: 1;
    padding: 0 var(--page-padding);
    background-color: white;
    min-height: 500px;
    max-width: calc(var(--main-max-width) - var(--side-bar-width));
    border-radius: var(--round-radius);
}

.right {
    width: var(--side-bar-width);
    margin-left: var(--item-margin);
    /* padding: 0 var(--page-padding); */
    /* background-color: white; */
}

.search {
    display: flex;
    flex-direction: row;
}

.search-input {
    flex: 1;
    height: 36px;
}

.search-btn {
    margin-left: var(--item-margin);
    width: 50px;
    height: 36px;
}

.side-box {
    box-sizing: border-box;
    margin-bottom: var(--item-margin);
    padding: var(--page-padding);
    width: 100%;
    background-color: white;
    border-radius: var(--round-radius);
}

.wx-img {
    width: 100%;
    /* border: 1px solid red; */
}

.copyright {
    margin: var(--item-margin) auto;
    padding: var(--page-padding);
    font-size: var(--info-font-size);
    max-width: var(--main-max-width);
}

@media (max-width: 768px) {
    .menu-desc {
        display: none;
    }
    .container {
        display: flex;
        flex-direction: column;
    }
    .left {
        width: 100%;
    }
    .right {
        width: 100%;
        margin-top: var(--item-margin);
        margin-left: 0;
    }
}

a {
    text-decoration: none;
}

.category {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--item-padding);
    /* justify-content: space-around; */
}

.category-item {
    background-color: var(--light-gray-color);
    color: var(--black-color);
    /* font-weight: bold; */
    padding: calc(var(--item-padding) / 2) var(--item-padding);
    border-radius: var(--round-radius);
    width: 36%;
    margin-left: 2%;
    text-align: center;
}

.category-item:hover, .category-current {
    background-color: var(--blue-color);
    color: white;
    font-weight: bold;
}