@charset "UTF-8";

/* 公共样式 */
.flex-al1 {
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    -ms-flex: 1;
    flex: 1;
    width: 20%;
}
.flex0 {
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}
.flex0_1 {
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: stretch;
    -webkit-align-items: stretch;
    -ms-flex-align: stretch;
    align-items: stretch;
}
.flex_g0 {
    -webkit-flex-grow: 0;
    -webkit-flex-shrink: 0;
    flex-grow: 0;
    flex-shrink: 0;
}
.flex1 {
	display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    -ms-flex: 1;
    flex: 1;
}
.flex9 {
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}
.flex10 {
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-flex-direction: column;
    -moz-flex-direction: column;
    -ms-flex-direction: column;
    -o-flex-direction: column;
    flex-direction: column;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

/* 顶部搜索框和分类排序 */
.fix_grid_96 {
    height: 96px;
}
.fix_grid {
    position: fixed;
    top: 0;
    width: 100%;
    max-width: 640px;
    z-index: 1000;
}
.search_grid {
    background-color: #f1f1f3;
    padding: 5px;
}
.search_grid .search {
    border: 1px solid #dedede;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
    padding: 5px 15px;
    background-color: white;
    font-size: 14px;
    color: #1d1d1d;
}
.search_grid .search .search-btn {
    position: absolute;
    right: 10px;
    background-color: #eee;
    padding: 5px 15px;
    border-radius: 25px;
}
.search_grid .search .icon_search {
    width: 16px;
    height: 28px;
    margin-right: 10px;
    background-position: center center;
    background-image: url(../../images/icon_search.png);
    background-repeat: no-repeat;
    background-size: auto 16px;
}
.search_grid .search form{
	width: 100%;
}
.search_grid .search input {
    height: 28px;
	width: 70%;
}
input, button, textarea, select {
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    border: 0;
    background: none;
    -webkit-appearance: none;
    outline: 0;
}
.list_menu_grid .icon_down {
    margin-left: 5px;
}
.list_menu_grid {
    height: 45px;
    background-color: white;
    color: #1d1d1d;
    font-size: 13px;
    text-align: center;
    border-bottom: 1px solid #e4e5ea;
}
.icon_down {
    display: inline-block;
    width: 10px;
    height: 5px;
    background-image: url(../../images/icon_down.png);
    background-repeat: no-repeat;
    background-size: 100%;
}
.sort_list_grid {
    position: fixed;
    top: 96px;
    bottom: 54px;
    width: 100%;
    max-width: 640px;
    z-index: 1000;
    overflow: auto;
}
.sort_list_grid a.curr {
    color: #d7b262;
    background-color: #f8f8f8;
    position: relative;
}
.sort_list_grid a {
    display: block;
    background-color: white;
    font-size: 13px;
    color: #1d1d1d;
    padding: 15px;
    position: relative;
    z-index: 1;
}
.sort_list_grid a.curr::before {
    content: "";
    display: block;
    width: 3px;
    height: 100%;
    background-color: #d7b262;
    position: absolute;
    left: 0;
    top: 0;
}
.mark {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 102;
    background-color: rgba(0, 0, 0, 0.5);
}

.sort_list_grid a + a {
    border-top: 1px solid #e4e5ea;
}

/* 全部分类 */
.nav {
	z-index: 1100;
	position: fixed;
	top: 96px;
	width: 100%;
	max-width: 640px;
}

.nav[data-active=filter] .nav_panel-filter,.nav[data-active=sort] .nav_panel-sort {
	display: block;
	-webkit-transform: translateZ(0);
	transform: translateZ(0)
}
.nav[data-active=cate] .nav_panel-cate {
	display: -webkit-box;
	display: -webkit-flex;
	display: flex;
	-webkit-transform: translateZ(0);
	transform: translateZ(0)
}

.nav_panel {
	width: 100%;
	top: 0;
	background: #fff;
	background: var(--white);
	-webkit-transition: -webkit-transform .2s ease;
	transition: -webkit-transform .2s ease;
	transition: transform .2s ease;
	transition: transform .2s ease,-webkit-transform .2s ease;
	-webkit-transform: translate3d(0,-250%,0);
	transform: translate3d(0,-250%,0);
	overflow-y: auto
}
.nav .nav_panel-sort,.nav_panel {
	position: absolute
}
.nav_panel-cate {
	display: -webkit-box;
	display: -webkit-flex;
	display: flex;
	height: 25rem;
}
@media (device-height:568px) and (-webkit-min-device-pixel-ratio:2){
	.nav_panel-cate {
		height:400px;
	}
} 
@media (min-device-width : 375px) and (max-device-width : 667px) and (-webkit-min-device-pixel-ratio : 2){
	.nav_panel-cate {
		height:455px;
	}
} 
@media (min-device-width : 414px) and (max-device-width : 736px) and (-webkit-min-device-pixel-ratio : 3){
	.nav_panel-cate {
		height: 550px;
	}
} 
.nav_panel-cate .nav_menu_item {
	overflow: hidden;
	position: relative;
	font-size: 14px;
	white-space: nowrap;
	text-overflow: ellipsis;
	word-break: break-all;
	padding-left: 25px;
	height: 50px;
    max-height: 50px;
    line-height: 50px;
}

.nav_panel-cate .nav_menu_item_selected {
	color: #DC3528;
}

.nav_panel-cate .nav_menu_item-icon {
	display: block;
	position: absolute;
	top: 50%;
	left: 10px;
	margin-top: -10px;
	width: 18px;
	height: 18px;
}

.nav_menu {
	width: 100%;
	overflow-y: auto;
}
.nav_menu a {
	color: inherit;
}
.nav_menu_item_selected {
	color: #DC3528;
	background-color: #f8f8f8;
}

.nav_panel_cate_mt {
	width: 45%;
	min-height: 105px;
	background: #f2f2f4;
}

.nav_panel_cate_mt .nav_menu_item {
	padding-left: 35px;
	background: #f2f2f2;
}

.nav_panel_cate_mt .nav_menu_item_selected {
	background: #e8e8e9;
}

.nav_panel-cate_st {
	display: none;
	background: #f8f8f9;
}

.nav_panel-cate_st .nav_menu_item {
	padding-left: 35px;
	background: #f8f8f9;
}

.nav_panel-cate_st .nav_menu_item_selected {
	background: #fff;
}

.nav_mask {
	display: none;
	position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    background-color: rgba(0, 0, 0, 0.3);
}

/* 知识点分类 */
.nav1 {
	z-index: 1100;
	position: fixed;
	top: 96px;
	width: 100%;
	max-width: 640px;
}

/* 课程列表 */
.section{
    position: absolute;
    top: 96px;
    bottom: 55px;
    overflow-y: scroll;
    width: 100%;
    max-width: 640px;
	-webkit-overflow-scrolling: touch;
}
.list_grid {
    padding: 0 15px;
    background-color: white;
}
.list_grid .normal_grid {
    margin: 0;
    padding: 20px 0;
	border-bottom: 1px #ececec solid;
}
.normal_grid .normal_grid_a {
    width: 47%;
    min-width: 163px;
    margin-right: 15px;
}
.normal_grid_a .img-box {
    padding-bottom: 61.6%;
}
.img-box {
    padding-bottom: 51.8%;
    position: relative;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
    overflow: hidden;
}
.img-box .img {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    margin: auto;
    font-size: 0;
}
.img-box .img img {
    width: 100%;
	border-style: none;
}
.learned {
    display: inline-block;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 3px 6px;
    font-size: 10px;
    position: absolute;
    color: white;
    font-weight: normal;
    bottom: 3px;
    right: 3px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
}
.learned::before {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    margin-right: 4px;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 7px solid white;
}
.ico_common {
    display: block;
    position: absolute;
    right: 0;
    top: 0;
    width: 40px;
    height: 40px;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 100%;
}
.ico-hot{
	background-image: url(../../images/ico-hot.png);
}
.ico-new{
	background-image: url(../../images/ico-new.png);
}
.ico-vip{
	background-image: url(../../images/ico-vip.png?v=1);
}
.grid_title2 {
    font-size: 14px;
    color: #1d1d1d;
    line-height: 1.4;
    max-height: 40px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    text-overflow: ellipsis;
    word-break: break-all;
    word-wrap: break-word;
}
.grid_info {
    font-size: 13px;
    color: #737373;
    margin-top: 6px;
    min-height: 23px;
}
.grid_info .free {
    font-size: 10px;
    padding: 3px 8px;
    color: white;
    -webkit-border-radius: 100px;
    -moz-border-radius: 100px;
    border-radius: 100px;
    background-color: #d7b262;
    background-image: -webkit-linear-gradient(bottom, rgba(55,55,55,.33), rgba(188,188,188,.33));
    background-image: -moz-linear-gradient(bottom, rgba(55,55,55,.33), rgba(188,188,188,.33));
    background-image: -o-linear-gradient(bottom, rgba(55,55,55,.33), rgba(188,188,188,.33));
    background-image: -ms-linear-gradient(bottom, rgba(55,55,55,.33), rgba(188,188,188,.33));
    background-image: linear-gradient(to top, rgba(55,55,55,.33), rgba(188,188,188,.33));
}
.grid_info .price {
    font-size: 13px;
    color: #ceab6b;
}
.mar5 {
    margin-left: 5px;
    margin-right: 5px;
}
.grid_bottom2 {
    min-height: 25px;
    margin-top: 5px;
}
.grid_bottom2 .text {
    font-size: 12px;
    color: #1d1d1d;
    font-weight: bold;
}
.grid_bottom2 .eva {
    font-size: 11px;
    color: #969696;
}