/* 核心优化：消除滚动闪烁 */
html, body{
    height: 100%;
}
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* 适配粘性导航栏高度 */
    -webkit-overflow-scrolling: touch;
    position: relative;
}

body {
    overflow-x: hidden;
    will-change: scroll-position;
    -webkit-font-smoothing: antialiased;
    backface-visibility: hidden;
    /* perspective: 1000px; */
    overflow: auto;
}

/* 全局性能优化 */
/* * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transform-style: preserve-3d;
} */

/* 卡片悬停效果优化 */
.feature-card {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    will-change: transform, box-shadow;
    backface-visibility: hidden;
}
.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.1);
}

/* 图标动画 */
.resource-icon {
    transition: transform 0.4s ease;
    will-change: transform;
}
.feature-card:hover .resource-icon {
    transform: scale(1.1) rotate(5deg);
}

/* 二维码容器样式 */
.qr-container {
    background-color: white;
    padding: 12px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* Logo适配样式 */
.logo-white {
    background-color: transparent;
    object-fit: contain;
}

/* 视频容器样式 - 优化清晰度 */
.video-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 1.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    cursor: pointer; /* 整个容器都可点击 */
}

/* 视频封面图样式 */
.video-cover {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 2;
    transition: opacity 0.4s ease, transform 0.3s ease;
}
.video-container:hover .video-cover {
    transform: scale(1.02);
}

/* 播放按钮叠加层 */
.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right:0;
    bottom: 0;
    inset: 0;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0) 30%, rgba(0,0,0,0) 70%, rgba(0,0,0,0.5) 100%);
    pointer-events: none; /* 让点击穿透到视频/容器 */
    transition: opacity 0.4s ease;
    cursor: pointer;
}

.play-button {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    pointer-events: auto; /* 按钮本身可点击 */
}
.video-container:hover .play-button {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.5);
}

.play-button i {
    color: #2563EB;
    font-size: 2rem;
    margin-left: 5px; /* 微调图标位置 */
}

.play-prompt {
    color: white;
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

/* 视频iframe样式 */
.video-frame {
    width: 100%;
    height: 100%;
    border: none;
    display: block; /* 消除底部间隙 */
}

/* 防止背景色闪烁 */
section {
    position: relative;
    overflow: hidden;
    transform: translateZ(0);
}

/* 导航栏优化 */
header {
    transform: translateZ(0);
}

section:first-of-type {
    z-index: 2;
    position: relative;
}

/* 防止字体闪烁 */
h1, h2, h3, h4, p, a {
    transform: translateZ(0);
    backface-visibility: hidden;
}


.feature-course-item-3{
    position: relative;
    background: #fff;
    border-radius: 15px;
    margin-bottom: 30px;
    -webkit-transition: all 0.4s ease;
    -o-transition: all 0.4s ease;
    transition: all 0.4s ease;
    -webkit-box-shadow: 0px 20px 50px 0px rgba(2, 56, 17, 0.10);
    -moz-box-shadow: 0px 20px 50px 0px rgba(2, 56, 17, 0.10);
    box-shadow: 0px 20px 50px 0px rgba(2, 56, 17, 0.10);
}
.feature-course-item-3 .fcf-thumb{
    min-height: auto;
    margin: 0;
    position: relative;
}
.feature-course-item-3 .fcf-thumb:after{
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    content: '';
    border-radius: 15px 15px 0 0;
    background: rgba(14, 7, 38, .7);
    visibility: hidden;
    opacity: 0;
    -webkit-transition: all 0.4s ease;
    -o-transition: all 0.4s ease;
    transition: all 0.4s ease;
}
.feature-course-item-3 .fcf-thumb:hover:after{
    visibility: visible;
    opacity: 1;
}
.feature-course-item-3 .fcf-thumb img{
    width: 100%;
    height: auto;
    border-radius: 15px 15px 0 0;
}
.feature-course-item-3 .fcf-thumb .play-overlay{
    visibility:hidden;
}
.feature-course-item-3 .fcf-thumb:hover .play-overlay{
    visibility:inherit;
}

.fci-details {
    position: relative;
    padding: 14px 20px;
}
.fci-details h4 {
    font-size: 20px;
    line-height: 28px;
    color: #2c234d;
    font-weight: 600;
    padding-top: 4px;
}




.tips-box, .tips-box1{width:170px;height: 45px;text-align:center;line-height: 45px;border-radius: 10px;position: absolute;right:90px;color: #fff;display: none}
.triangle-right{  display:inline-block;  width:0;  height:0;  border-top: 10px solid transparent;  border-bottom: 10px solid transparent;position: absolute;right: -12px;top:12px;} 
 .tips-red{background: #ff4a4a;top:12px;}
 .triangle-red{border-left: 20px solid #ff4a4a;}


 .tips-yellow{background: #ffb400;top:20px;}
 .triangle-yellow{border-left: 20px solid #ffb400;}

 .tips-green{background: #00c800;top:20px;}





 .tips-green1{background: #00c800;top:20px;}
 .triangle-green{border-left: 20px solid #00c800;}
 .tips-blue{background: #428dff;top:222px;}
 .triangle-blue{border-left: 20px solid #428dff;}



.fixed-right{
    /* position: fixed;right: 10px; top: 30%; */
    width: 74px;background: #fff;
  -webkit-box-shadow: 0 4px 8px rgba(0,0,0,0.2);
          box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  -webkit-border-radius: 10px;
          border-radius: 10px;
  padding: 0 10px;
  z-index: 99999;
}
.fixed-bottom{
    bottom: 200px;
}

.fixed-right ul li {width: 100%;text-align: center;border-bottom: 1px solid #f0f0f0;padding: 10px 0;position: relative;}
.fixed-right ul li:hover span {color: #f60;}
.fixed-right ul li a {display: block;cursor: pointer;text-align:center;}
.fixed-right ul li a>img{margin:auto;}
.fixed-right ul li a span {display: block;margin-top: 10px;font-size: 13px;color: #666;-webkit-transition: 0.2s;-o-transition: 0.2s;transition: 0.2s;}

.aspect-ratio-courses-img{
    aspect-ratio: 8 / 5;
}


              

.teacher-section .teacher-video{
    cursor: pointer;
    /* width: 560px;
    height: 368px; */
    width: 100%;
    aspect-ratio: 582 / 440;
    /* height: 440px; */
    outline: 0;
    position: relative
}

.teacher-section .teacher-video img{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 98
}

.teacher-section .teacher-video video {
    width: 100%;
    height: 269px;
    outline: 0;
    position: absolute;
    left: 0;
    top: 41px
}



.teacher-section .teacher-items {
    position: relative
}
.teacher-section .teacher-items ul {
    /* margin-top: 39px */
}

.teacher-section .teacher-items ul li {
    display: block;
    width: 100%;
    padding-left: 56px;
    margin-bottom: 35px
}

.teacher-section .teacher-items ul li:nth-of-type(1) {
    background: url(data:image/png;base64,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) no-repeat left top;
    background-size: 36px 36px;
    background-position-y: 2px
}

.teacher-section .teacher-items ul li:nth-of-type(2) {
    background: 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.teacher-section .teacher-items ul li:nth-of-type(4) {
    background: url(data:image/png;base64,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) no-repeat left top;
    background-size: 36px 36px;
    background-position-y: 2px;
    margin-bottom: 0
}

.teacher-section .teacher-items ul li p {
    line-height: 22px;
    font-size: 16px;
    font-weight: 500;
    color: #333
}

.teacher-section .teacher-items ul li p:last-of-type {
    font-weight: 400;
    line-height: 20px;
    font-size: 14px;
    color: #666;
    margin-top: 3px
}







.video-container{
    position: relative;
    border-radius: 6px;
    overflow: hidden;
    aspect-ratio: 744 / 480;
}
.video-container .video-container-p {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    background: rgba(0,0,0,0.25);
    line-height: 48px;
    font-size: 16px;
    color: #fff;
    padding: 0 21px;
    z-index: 20;
}


.biaozhun {
    background: #f7f7f7;
    display: table;
    width: 100%;
    padding-bottom: 60px
}

.biaozhun .box {

}



.pict {
    position: relative;
    border-radius: 6px;
    overflow: hidden;
}
.pict p {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    background: rgba(0,0,0,0.25);
    line-height: 48px;
    font-size: 16px;
    color: #fff;
    padding: 0 21px;
    z-index: 2;
}
.pict .video-frame{
    width: 100%;
    aspect-ratio: 744 / 480;
    background: #000000;
}


/* .biaozhun .box .text {
    background: #fff;
    text-align: center;
    height: 60px;
    line-height: 60px
}

.biaozhun .box .text i {
    width: 28px;
    height: 30px;
    margin: 0 6px
}

.biaozhun .box .fr {
    width: 588px
}

.biaozhun .box .fr ul li {
    margin-left: 24px;
    margin-top: 24px;
    width: 282px;
    height: 180px;
    position: relative
}

.biaozhun .box .fr ul li:nth-child(2n+1) {
    margin-left: 0
}

.biaozhun .box .fr ul li:nth-last-child(n+3) {
    margin-top: 0
} */
.biaozhun .biaozhun-item{
    position: relative;
}
.biaozhun .biaozhun-item .text1 {
    position: absolute;
    left: 21px;
    top: 60px
}

.biaozhun .biaozhun-item .text1 b {
    font-size: 26px;
    color: #fff
}

.biaozhun .biaozhun-item .text1 p {
    font-size: 13px;
    line-height: 1.6;
    margin-top: 15px;
    color: #fff;
    max-width: 158px
}

.biaozhun .text2 {
    margin-top: 44px
}

.biaozhun .text2 p {
    font-size: 18px;
    color: #666;
    line-height: 1.4;
    text-align: center
}

.biaozhun .text2 .btn-wrap {
    margin-top: 60px
}





.about{
}
.about .line {
	height: 4px;
	width:180px;
    margin: 6px auto 3rem;
}
.about-desc{
    text-align: left;
    color: #777;
    font-size: 14px;
    line-height: 24px;
}
.about-desc P{
    margin-bottom: 10px;
}


.about ul{
	margin: auto;
	overflow: hidden;
    padding-top:30px;
}

.about ul li{
	/* border-left: 1px solid #dcdcdc;
	border-right: 1px solid #dcdcdc; */
	overflow: hidden;
}

.about ul li b{
	font-size: 48px;
	color:#165DFF;
	text-align: center;
	font-weight: normal;
}

.about ul li em{
	font-size: 20px;
	color:#6b6b6b;
	font-weight: normal;
	font-style: normal;
}

.about ul li p{
	font-size: 16px;
	color:#262626;
	text-align: center;
	padding-bottom:14px;
}

.about ul h5{
    width:32px;
	height:4px;
	margin:auto;
	background: #f6ab00;
}



.student-section{

}

.student-section .student-kt {
    height: 286px;
    background-repeat: no-repeat;
    background-size: cover;
    opacity: .95;
    cursor: pointer;
    transition: transform .4s;
    display: block;
    border-radius: 8px;
    overflow:hidden;
}

.student-section .student-kt .kt-title {
    padding-top: 48px;
    color: #fff;
    font-size: 24px;
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    text-align: center
}

.student-section .student-kt .kt-text {
    padding-top: 12px;
    color: hsla(0,0%,100%,.9);
    text-align: center;
    font-size: 16px;
    font-style: normal;
    line-height: 24px
}

.student-section .student-kt .kt-link {
    display: block;
    width: 180px;
    height: 44px;
    line-height: 44px;
    background: #fff;
    border-radius: 22px;
    color: #ff334f;
    font-size: 18px;
    margin: 48px auto 0;
    text-align: center;
}

.student-section .student-kt .kt-link:after {
    display: inline-block;
    content: " ";
    background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAUCAYAAACaq43EAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAEPSURBVHgB3VXbEYIwENwD+zAlOGgB8O+DEqAStRJb0AqkAJ2xBC0Ezjx4BAb8Oz7cmQA5bmZz2dsE+CdwtMvM+JUTQIAUFFzM4Gh/xFzEQNh9Ep14s43HsggC4PXhrl9xPX2jpIRe17efI1CxRkk5WBM6KIR8GaaIENvqAk3eIR7qLVOxIX9cC63xuQv09RbR2MeU3gv703qOFETAH6++Ru+EWt/NCa7yoOe72RC6PeAozYBKQQJES/3MvEhBz1syb3MZb1euucTsZHmi9Iiuo2G83ZxgCwiBV9qzxKc2QHymx61opxAAr1JjG7PFqg5ZXf0cmYqdV5VbhdU1H6bI3McTuooS9+9jo6s+s0fwBUHDYLH9Uyr5AAAAAElFTkSuQmCC) no-repeat;
    background-size: cover;
    width: 13px;
    height: 8px;
    vertical-align: middle;
    position: relative;
    top: -3px;
    margin-left: 7px
}

.student-section .student-kt:hover {
    opacity: 1;
    transform: translateY(-4px)!important
}

.student-section .teacher-items {
    list-style: none;
    width: 100%;
    margin: 0 auto
}

.student-section .teacher-items li {
    box-sizing: border-box;
    border-radius: 6px;
    height: 134px;
    border: 1px solid #fff;
    background: linear-gradient(180deg,#fbf2ff,#fff 37.31%);
    box-shadow: 0 4px 40px 0 rgba(183,197,217,.2);
    transition: transform .4s;
    position: relative;
    cursor: pointer
}
.student-section .teacher-items li:hover{
    opacity: 1;
    transform: translateY(-4px)!important
}

.student-section .teacher-items li .style_type {
    color: #333;
    font-size: 18px;
    font-weight: 500;
    line-height: 24px;
    height: 24px;
    padding: 23px 0 0 30px;
    box-sizing: content-box
}

.student-section .teacher-items li .style_type:before {
    vertical-align: top;
    display: inline-block;
    content: " ";
    width: 24px;
    height: 24px;
    margin-right: 16px;
    background-size: contain
}

.student-section .teacher-items li .style_desc {
    padding: 14px 30px 0;
    color: #777;
    font-size: 14px;
    line-height: 24px
}

.student-section .teacher-items li .style_button {
    width: 120px;
    height: 32px;
    line-height: 32px;
    font-size: 16px;
    text-indent: 14px;
    color: #6766dd;
    border-radius: 18px;
    position: absolute;
    font-weight: 700;
    background: transparent;
    top: 20px;
    right: 20px
}

.student-section .teacher-items li .style_button:after {
    width: 15px;
    height: 11px;
    content: " ";
    display: inline-block;
    background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAWBAMAAAAlTTH8AAAAJFBMVEUAAABoaN5pZt1oZ95oZ91oaOBubt9mZt1oaN1nZ91nZt1nZt3GENsOAAAAC3RSTlMAgEvovUIXjlvz1HldZo8AAABUSURBVBjTY8ANmBRQ+dob0fi7A1D4LLvNUPhs1ltQNUTvFkDhM+7eiqrAe3MCA4cgAlTuXsDQvRsZbEfno6tHNw/TPkz3INyL7h+8/tXeiBFemAAAEYkq19zSFbUAAAAASUVORK5CYII=) no-repeat;
    background-size: contain;
    vertical-align: middle;
    position: relative;
    margin-left: 6px;
    top: -2px
}

.student-section .teacher-items li.style_listen-item1 .style_type:before {
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}

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}

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}

.student-section .teacher-items li.style_listen-item4 .style_type:before {
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}