/* ========== 基础样式 ========== */
body {
    min-width: 1070px;
    height: 100%;
}
.font-500 {
    font-weight: 500;
}

.ModBox {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.mb50 {
    margin-bottom: 50px;
}

.mb40 {
    margin-bottom: 6vh;
}

.ml-5 {
    margin-left: 5px;
}
/* ========== Footer样式 ========== */
#header-container{
    width: 100%;
    background: #fff;
}
.headerCon{
    width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    height: 60px;
}
.headerCon .logo{
    height: 36px;
    width: auto;
}
.headerCon .headerNav{
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}
.headerCon .headerNav .headerNavItem{
    font-size: 18px;
    padding: 0 50px;
    height: 60px;
    line-height: 60px;
}
.headerCon .headerNav .headerNavItemEd{
    color: #c92c3f;
}
#footer-container {
    width: 100%;
}

.footer {
    background: #f5f5f5;
    padding: 6vh 0 1.5vh;
    width: 100%;
}

.footerBox {
    display: flex;
    justify-content: center;
    font-size: 2.4vh;
    margin-bottom: 3vh;
}

.footerInfoBox {
    width: 100%;
    margin: 3vh auto;
    font-size: 2.4vh;
    color: #666666;
    text-align: center;
}

.footerInfoBox .footerInfoItemIphone {
    margin-right: 27vh;
}

.footerBox .footerNavItem {
    color: #333333;
    padding: 0 9vh;
    font-size: 2.4vh;
}
.footerNavItem:hover{
    cursor: pointer;
    color: #c92c3f;
}

.footerBox .footerInfoItem {
    color: #666666;
    line-height: 6vh;
}

.ICPItem {
    color: #666666;
    padding: 0 1.8vh;
}

.ICPItem-color {
    color: #333333;
}

.beiIcon {
    object-fit: contain;
}
/* ========== Header样式 ========== */


.headerNavPar {
    position: relative;
}

.headerNavPar .headerNavTwo {
    position: absolute;
    left: 0;
    right: 0;
    top: 60px;
    background: rgba(255, 255, 255, .8);
    height: auto;
    display: none;
}

.headerNavPar .headerNavTwo .headerNavTwoItem {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 60px;
    line-height: 60px;
    font-size: 18px;
}

.headerNavPar .headerNavTwo .headerNavTwoItem .headerNavTwoItemLogo {
    height: 3vh;
    width: auto;
}

.headerNavPar:hover .headerNavTwo {
    display: block;
}
/* ========== 通用组件样式 ========== */
.InfoBox {
    text-align: center;
}

.InfoBox .InfoSubtitle {
    font-size: 3.5vh;
    color: #030303;
    margin-bottom: 35px;
    font-weight: 500;
    z-index: 10;
}

.infoFlex {
    display: flex;
    justify-content: center;
}

.infoFlexItem {
    width: 280px;
    padding-top: 60px;
    margin: 0 30px;
}

/* ========== 学壹课新布局样式 ========== */

/* Banner区域 */
.banner-content {
    width: 100%;
    margin: 0 auto;
}
.banner-image{
    width: 100%;
    height: auto;
}
.banner-title {
    font-size: 52px;
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 25px;
    color: #333;
}
.banner-subtitle {
    font-size: 22px;
    color: #000;
    font-weight: 300;
    margin-bottom: 50px;
}
.section-title-warper .section-title {    
    display: inline-block;
    font-size: 5vh;
    font-weight: 500;
    color: #000;
}
/* 心形图标和粉色装饰 */
.section-title-with-wrapper {
    background: url('../images/4.png') center no-repeat;
    background-size: 100% 100%;
    display: inline-block;
    width: 100%;
    height: 90vh;
}
.section-title-warper {
    margin: 8vh 0 7vh 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.heart-before {
    background: url('../images/2.png') center top no-repeat;

}
.heart-after {
    background: url('../images/3.png') center top no-repeat;
}
.header-icon {
    display: inline-block;
    background-size: cover;
    width: 32px;
    height: 32px;
    position: relative;
    top: 4px;
    margin: 0 4px;
}
/* Section 1: 致在城市中奔走的你 */
.section-1-content {
    display: flex;
    justify-content: center;
    width: 100%;
    margin: 0 auto;
}
.section-1-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 44vh;
    position: relative;
}
.section-soild {
    /* 将px转换vh单位 */
    width: 2.8vh;
    height: 1vh;
    border-bottom: solid 1px #ffffffe6;
    position: absolute;
    left: 3.5vh;
    z-index: 10;
    padding: 28px 0 0 0;
}
.section-1-text {
    /* 换算成vh */
    font-size: 2vh;
    line-height: 3.5vh;
    color: #ffffffe6;
    text-align: left;
    position: absolute;
    /* left换算成vh */
    left: 3.5vh;
    /* 换算成vh */
    top: 6vh;
    right: 3vh;
    z-index: 10;
}
.section-1-img-1 {
    background: url('../images/5.png') center top no-repeat;
    background-size: 100% 100%;
}
.section-1-img-2 {
    background: url('../images/6.png') center top no-repeat;
    background-size: 100% 100%;
}
.section-1-img-3 {
    background: url('../images/7.png') center top no-repeat;
    background-size: 100% 100%;
}
.section-background {
    background-size: contain;
    width: 100%;
    /* 换算成vh */
    height: 57vh;
}

.transform-scale:hover {
    transform: scale(1.05);
    transition: all 0.3s ease-in-out;
    cursor: pointer;
}

/* Section 2: 为什么选择学壹课 */
.section-2{
    background: url('../images/8.png') center top no-repeat;
    background-size: 100% 100%;
    width: 100%;
}
.section-2-buttons {
    display: flex;
    justify-content: center;
    width: 100%;
}
.section-2-button-item {
    flex: 1;
    text-align: center;
    position: relative;
}
.section2-button1-width{
    /* 转换为vh */
    max-width: 44vh;
}
.section2-button2-width{
    /* 转换为vh */
    max-width: 45vh;
}
.section2-button3-width{
    max-width: 46vh;
}
.red-button {
    background: #d73e3e;
    color: #fff;
    font-size: 3.2vh;
    font-weight: 500;
    padding: 2.8vh 4vh;
    border-radius: 1.5vh;
    margin-bottom: 1.5vh;
    display: inline-block;
    min-width: 90%;
}
.red-button:hover{
    background: #df6463;
    cursor: pointer;
}
.button-description {
    font-size: 2.4vh;
    line-height: 1.9;
    color: #606979c1;
    background: #fff;
    width: 90%;
    height: 30vh;
    margin: 0 auto;
    border-radius: 1.5vh;
    text-align: left;
    /* 阴影 */
    box-shadow: 0 4px 12px rgba(255, 192, 203, 0.271);
    padding: 2.8vh 4vh;
}
/* Section 3: 丰富的课程 */
.InfoTit{
    text-align: center;
    font-size: 4.4vh;
    font-weight: 500;
    color: #333;
    background: #fff;
    padding: 3vh 0 7vh 0;
}
.section-3-courses {
    width: 100%;
    height: 53vh;
    margin: 0 auto;
    background: url('../images/9.png') center top no-repeat;
    background-size: 100% 100%;
}
.course-item {
    display: flex;
    align-items: center;
    justify-content: center;
}
.pr-300 {
    padding: 0 45vh 0 0;
}
.course-content {
    flex: 1;
}
.course-content-right {
    margin-left: 170px;
}
.course-title {
    font-size: 3.6vh;
    font-weight: 500;
    color: #333;
    margin-bottom: 3vh;
    text-align: left;
}
.quote-icon {
    font-size: 56px;
    color: #c10e23;
    line-height: 1;
    margin-bottom: 3vh;
    font-family: serif;
}
.course-description {
    font-size: 2.6vh;
    line-height: 2;
    color: #666;
    text-align: left;
    padding: 1.5vh 0;
}
.quote-icon-before{
    background: url('../images/10.png') center top no-repeat;
    width: 3.4vh;
    height: 2.8vh;
    background-size: 100% 100%;
}
.quote-icon-after{
    background: url('../images/11.png') center top no-repeat;
    width: 3.4vh;
    height: 2.8vh;
    background-size: 100% 100%;
    /* p标签 右对齐 */
    float: right;
}
.course-img-1 {
    width: 79vh;
    height: 52vh;
    background: url('../images/12.png') center top no-repeat;
    background-size: 100% 100%;
}
.course-img-2 {
    width: 79vh;
    height: 52vh;
    background: url('../images/13.png') center top no-repeat;
    background-size: 100% 100%;
    margin-left: 100px;
}
.course-img-3 {
    width: 79vh;
    height: 52vh;
    background: url('../images/14.png') center top no-repeat;
    background-size: 100% 100%;
}
.course-img-4 {
    width: 79vh;
    height: 52vh;
    background: url('../images/15.png') center top no-repeat;
    background-size: 100% 100%;
    margin-left: 100px;
}

/* Section 4: 专业的体验 */
.section-4-content {
    display: flex;
    justify-content: center;
    gap: 70px;
    width: 100%;
    margin: 0 auto;
}
.section-4-item {
    flex: 1;
    max-width: 78vh;
    text-align: center;
    position: relative;
    padding: 0 0 0 3vh;
}
.section-4-title {
    font-size: 3.4vh;
    font-weight: 500;
    color: #333;
    position: absolute;
    bottom: 15vh;
}
.section-4-description {
    font-size: 2.4vh;
    line-height: 2;
    color: #666;
    position: absolute;
    text-align: left;
    bottom: 3vh;
}
.section-4-img-1 {
    width: 75vh;
    height: 60vh;
    background: url('../images/16.png') center top no-repeat;
    background-size: 100% 100%;
}
.section-4-img-2 {
    width: 75vh;
    height: 60vh;
    background: url('../images/17.png') center top no-repeat;
    background-size: 100% 100%;
}

/* Section 5: 我们的承诺 */
.section-5 {
    width: 100%;
    /* flex-direction: column; */
    /* justify-content: flex-start; */
    position: relative;
}
.section-5-text-container{
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    top: 18.4vh;
}
.section-5-image-placeholder {
    width: 100%;
    height: auto;
    margin: 0 auto;
    padding: 3vh 0 0 0;
}
.section-5-image-list {
    width: 85vh;
    height: 100%;
    background: url('../images/20.png') center top no-repeat;
    background-size: contain;
    margin: 7.6vh  auto;
}
.section-5-image-list-container {
    width: 100%; 
    height: 80px;
}

.section-5-overlay-text {
    width: 100%;
    color: #fff;
    font-weight: 500;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    margin-bottom: 3vh;
    /* padding-bottom: 3vh; */
}
.overlay-title{
    font-size: 7vh;
    font-weight: 900;
    margin-bottom: 1.5vh;
}
.header-text{
    width: 93vh;
    font-size: 2.4vh;
    color: #fff;
    margin: 0 auto;
    text-align: center;
    /* 字间距 */
    letter-spacing: 1px;
    line-height: 1.8;
}
/* Footer最终标题 */
.footer-final-title {
    text-align: center;
    font-size: 34px;
    font-weight: 500;
    color: #333;
    margin-bottom: 50px;
    padding-top: 50px;
    line-height: 1.6;
}