/* ==================== 优质区块链网站区块层级 ==================== */
.high-quality-portals {
    width: 100%;
}

/* 标题区域 - 子层级 */
.high-quality-portals .title-bottom-border a {
    font-size: 14px;
    color: #39a0e2;
    text-decoration: none;
    padding: 5px 10px;
    border-radius: 3px;
    transition: background 0.2s;
    float: right;
}

.high-quality-portals .title-bottom-border a:hover {
    background: rgba(57, 160, 226, 0.1);
}

/* 网站列表容器 - 子层级 */
.high-quality-portals ul {
    margin-top: 5px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px 20px;
    padding: 0;
    list-style: none;
    width: 100%;
    box-sizing: border-box;
}

/* 网站卡片 - 孙层级 */
.high-quality-portals li {
    height: 68px;
    width: auto;
    border: 1px solid #eee;
    border-radius: 5px;
    transition: ease-in-out 0.1s;
    box-sizing: border-box;
    min-width: 0;
    background: #fff;
}

.high-quality-portals li:hover {
    background: #eee;
    border-color: #ddd;
}

/* 链接容器 - 曾孙层级 */
.high-quality-portals li a {
    display: flex;
    align-items: center;
    height: 100%;
    text-decoration: none;
    min-width: 0;
    padding: 0 10px;
}

/* 网站Logo - 曾孙层级 */
.high-quality-portals .site-logo {
    height: 40px;
    width: 40px;
    margin: 0;
    flex-shrink: 0;
    object-fit: cover;
    border-radius: 4px;
}

/* 网站信息容器 - 曾孙层级 */
.high-quality-portals .site-info {
    height: auto;
    width: auto;
    flex: 1;
    margin: 0 0 0 10px;
    font-size: 12px;
    min-width: 0;
    overflow: hidden;
}

/* 网站名称 - 玄孙层级 */
.high-quality-portals .site-name {
    font-weight: bold;
    margin-top: 0;
    color: #40b4f7;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}

/* 网站简介 - 玄孙层级 */
.high-quality-portals .site-summary {
    height: auto;
    width: 100%;
    line-height: 1.4;
    color: #777;
    margin-top: 3px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

/* 图标 - 曾孙层级 */
.high-quality-portals i {
    height: 14px;
    width: 14px;
    flex-shrink: 0;
    overflow: hidden;
    background: url(../images/sitebg.png) 0 0 no-repeat;
    margin: 0 0 0 8px;
    align-self: center;
}


/* ==================== 响应式媒体查询 ==================== */

/* 平板设备 (768px - 1024px) */
@media screen and (max-width: 1024px) {


    /* 优质网站网格 */
    .high-quality-portals ul {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px 15px;
    }

}

/* 手机设备 (max-width: 767px) */
@media screen and (max-width: 767px) {

    /* 优质网站单列布局 */
    .high-quality-portals ul {
        grid-template-columns: 1fr;
        gap: 10px 0;
    }

}

/* 超小屏幕 (max-width: 480px) */
@media screen and (max-width: 480px) {

    /* 优质网站卡片 */
    .high-quality-portals li {
        height: auto;
        min-height: 60px;
    }

    /* 网站Logo */
    .high-quality-portals .site-logo {
        height: 36px;
        width: 36px;
    }

    /* 网站信息 */
    .high-quality-portals .site-info {
        font-size: 11px;
    }
}