body ,header,footer,main{
    padding: 0;
    margin: 0;
}

header {
    height: 2em;
}
/**
 * 主要内容显示区域
 */
main {
    display: grid;
    grid-template-columns: 1fr;
    align-items: start;
    justify-items: start;
    align-content: stretch;
    justify-content: space-between;
    max-width: 1440px;
    margin: 1em auto;
    /*padding: 1em 0;*/
}

/**
 * 案例内容区
 */
main .app-case {
    max-width: 1440px;
    justify-items: stretch;
    align-items: start;
    justify-content: space-evenly;
    align-content: space-evenly;
    margin: 0 1em;
}

/**
 * 案例内容导航
 */
main .app-nav {
    display: none;
    padding: 1em 2em;
}

.app-nav dt-nav {
    position: fixed;
    width: 12em;
}

/**
 * 站点面包屑导航
 */
.app-case .case-nav {
    position: relative;
    text-align: left;
    line-height: 2;
    margin: 1em auto;
    font-weight: 400;
}

.case-nav a {
    color: inherit;
    text-decoration: none;
}

.app-case .case-nav >*:not(a) {
    color: var(--color-notice,#00489C);
}

/**
 * 站点咨询
 */
.app-case .case-consult {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    text-align: left;
    border:1px solid rgba(0, 72, 159, 0.1);
    flex-wrap: wrap;
    gap: 0.5em;
}
.app-case .case-consult >*{
    flex: 1;
}
.app-case .case-consult >*:first-child{
    flex: 0;
    flex-basis: 4em;
    text-align: center;
    margin: 0 auto;
}

.app-case .case-consult >*:last-child{
    flex: 0;
    flex-basis: 12em;
    text-align: center;
    /*margin: 0 auto;*/
}
.app-case .case-consult h2{
    min-width: 6em;
}
.app-case .case-consult a{
    display: inline-block;
    width: 8em;
    height: 2.5em;
    position: relative;
    line-height: 2;
    text-align: left;
    text-decoration: none;
    padding: 0.25em 0.5em;
    background: #00489C;
    color: #fff;
}

.app-case .case-consult a svg {
    vertical-align: middle;
}

/**
 * 项目背景
 */
.app-case .case-introduction  {
    display: block;
    margin: 1em auto;
    padding: 2em 0;
    width: 100%;
    line-height: 1.7;
}

.case-introduction img {
    max-width: 100%;
}

.case-introduction-outer > * {
    text-align: left;
}

/**
 * 项目效果
 */
.case-achievement {
    margin: 1em auto;
    padding: 2em 0;
}
.case-achievement-outer p {
    text-align: left;
}

.case-achievement-item {
    line-height: 2;
}

.case-achievement-item >* {
    text-align: left;
}

.case-achievement-item h4 {
    color: var(--backgroud-color-button,#00489C);
    padding: 0;
}

.case-achievement-item-img {
    text-align: center;
    width: 100%;
}
.case-achievement img{
    max-width: 100%;
    vertical-align: middle;
}

/**
 * 方案优势
 */

.case-advantage {
    padding: 2em 0;
}

.case-advantage .case-advantage-outer {
    display: grid;
    grid-template-columns: 1fr;
    justify-items: center;
    align-items: stretch;
    justify-content: center;
    align-content: stretch;
    gap: 1em;
    padding: 1em 0;
}

.case-advantage-outer .case-advantage-item {
    display: flex;
    flex-direction: column;
    text-align: center;
    padding: 0 1em 2em 1em;
    margin: 0 auto;
    background: #F2F7FC;
}

.case-advantage-item >*:last-child{
    text-align: left;
}

/**
 * 项目价值
 */
.case-value {
    padding: 2em 0;
}

.case-value h2 {
}

.case-value .case-value-outer {
    display: grid;
    grid-template-columns :1fr;
    gap: 1em;
}

.case-value-outer .case-value-item {
    display: flex;
    flex-direction: column;
    padding: 0.5em;
    box-shadow: 0 0.25em 0.75em 0 rgba(0,0,0,0.04);;
}

.case-value-item-title {
    display: grid;
    grid-template-columns: max-content auto max-content;
    align-items: center;
    text-align: center;
    font-weight: 600;
}

.case-value-item-title >div:first-child >span{
    display: inline-block;
    width: 2.75em;
    height: 2.75em;
    font-size: 2em;
    text-align: center;
    line-height: 2.75;
    font-weight: bold;
    font-style: italic;
    border-radius: 50%;
    background: #F8F8F8;

}

.case-value-item-title >div:last-child {
    margin-right: 1em;
    height: 8.375em;
    width: 15.75em;
    background: url("../images/case-icon-value.png");
}

.case-value-item .case-value-item-content{
    line-height: 2;
    padding: 0.5em;
    max-height: 11em;
    overflow: hidden;
    text-overflow: ellipsis;
}

/**
 * 解决方案咨询
 */
.case-solution{
    background: center url("../images/case-solution-background.png") no-repeat;
    padding: 0;
}
.case-solution .case-case-content {
    display: block;
    width: auto;
    font-size: 1em;
    line-height: 2;
    position: relative;
    margin: 0 auto;
    padding: 0 1.25em;
}
.case-solution .case-case-content >* {
    margin:1em auto;
}

.case-solution .case-case-content .case-case-content-button {
    display: inline-block;
    width: 12em;
    height: 2.5em;
    position: relative;
    line-height: 2;
    text-align: left;
    text-decoration: none;
    padding: 0.25em 0.5em;
    background: #00489C;
    color: #fff;
    cursor: pointer;
}
@media (min-width: 576px) {
    .app-case .case-consult h2{
        min-width: 12em;
    }
}
@media (min-width: 768px) {
    main .app-case {
        /*padding: 0 8em;*/
    }
    main .app-nav {
        display: block;
    }

    .case-advantage .case-advantage-outer {
        grid-template-columns: repeat(2,1fr);
    }

    .case-value .case-value-outer {
        grid-template-columns: repeat(2,1fr);
    }
    .case-solution{
        max-height: 20em;
        margin: 0 auto;
        padding: 1em 0 2em;
    }
    .case-solution .case-case-content {
        max-width: 1440px;
        padding: 0 2.5em;
    }
}
@media (min-width: 1024px) {
    main .app-case {
        padding: 0 3.75em;
    }
    .case-solution .case-case-content {
        padding: 0 3.75em;
    }
    .app-case .case-consult{
        flex-wrap: nowrap;
    }
    .app-case .case-consult >*:last-child{
        margin:  0 auto;
    }
}

@media (min-width: 1560px) {
    main .app-case {
        padding: 0;
    }
    .case-solution .case-case-content {
        padding: 0;
    }
}