@charset "utf-8";

/*--------------------------------------------------------*/
/* page_grammar_desc
/*--------------------------------------------------------*/

.page_grammar_desc .content{
	line-height:1.5;
	width:900px;
	margin:0 auto;
}
.page_grammar_desc .content .main{
	margin-bottom:30px;
}
.page_grammar_desc .content .main img{
	display:block;
}
.page_grammar_desc .container .content .sec{
	font-size: 16px;
	font-size: 1.6rem;
}

.page_grammar_desc .content dl dt.sec_ttl{
	border-left: solid 5px #44be90;
	padding-left: 10px;
	margin-bottom: 20px;
	font-size: 20px;
	font-size: 2.0rem;
	font-weight: bold;
}
.page_grammar_desc .content .content_ttl{
	font-size:24px;
	font-size:2.4rem;
	font-weight:bold;
	color:#fff;
	background:#44be90;
	height:50px;
	text-align:center;
	line-height:50px;
}
/* section 1 */
.page_grammar_desc .content .sec_1 dl dd{
	padding: 0 10px;
}
.page_grammar_desc .content .sec_1 .significance_learn{
	margin: 0 0 40px 0;
	padding: 0 10px;;
	
}
/* section 2 */
.page_grammar_desc .content .sec_2 .level_desc{
	padding: 0 10px;
}
.page_grammar_desc .content .sec_2 .level_desc dl{
	margin: 0 0 30px 0;
}
.page_grammar_desc .content .sec_2 .level_desc dl dt{
	font-weight: bold;
}
.page_grammar_desc .content .recommend_table{
	border:solid 3px #44be90;
	width:765px;
	margin:0 auto;
}
.page_grammar_desc .content .recommend_table dt,
.page_grammar_desc .content .recommend_table dd{
	display:table-cell;
	font-size:16px;
	font-size:1.6rem;
	vertical-align:middle;
}
.page_grammar_desc .content .recommend_table dt{
	background:#44be90;
	text-align:center;
	color:#fff;
	box-sizing:border-box;
	padding:0 20px 0 40px;
	font-weight:bold;
	font-size:20px;
	font-size:2.0rem;
	line-height:1.4;
	position:relative;
}
.page_grammar_desc .content .recommend_table dt:after{
	content: "";
	width: 0;
	height: 0;
	border-top: 55px solid transparent;
	border-right: 30px solid transparent;
	border-bottom: 55px solid transparent;
	border-left: 30px solid #44be90;
	position: absolute;
	right: -60px;
	top: 50%;
	margin-top: -55px;
}
.page_grammar_desc .content .recommend_table dd{
	padding:0 50px;
}
.page_grammar_desc .content .recommend_table dd ul {
	padding:10px;
	font-weight: bold;
}
.page_grammar_desc .content .recommend_table dd li + li{
	margin-top:5px;
}

/* section 3 */
.page_grammar_desc .content .sec_3 dl dd ul{
	font-size:0;
	text-align: center;
}
.page_grammar_desc .content .sec_3 dl dd ul li{
	font-size:15px;
	font-size:1.5rem;
	display:inline-block;
	width:280px;
	vertical-align:top;
	background:#dcf9ee;
	box-sizing:border-box;
	padding:20px;
	border-radius:10px;
	min-height: 300px;
	text-align: left;
}
.page_grammar_desc .content .sec_3 dl dd ul li + li{
	margin-left:20px;
}
.page_grammar_desc .content .sec_3 dl dd ul li .box_ttl{
	font-size:16px;
	font-size:1.6rem;
	color:#44be90;
	padding-left:60px;
	position:relative;
	margin-bottom:10px;
	min-height: 48px;
}
.page_grammar_desc .content .sec_3 dl dd ul li .box_ttl:before{
	width:45px;
	height:45px;
	line-height:45px;
	display:inline-block;
	border-radius:5px;
	color:#fff;
	background:#44be90;
	text-align:center;
	font-size:18px;
	font-size:1.8rem;
	position:absolute;
	left:0px;
}
.page_grammar_desc .content .box_1 .box_ttl,
.page_grammar_desc .content .box_2 .box_ttl,
.page_grammar_desc .content .box_3 .box_ttl {
	line-height: 48px;
}
.page_grammar_desc .content .sec_3 dl dd ul li.box_1 .box_ttl:before{
	content:"1";
}
.page_grammar_desc .content .sec_3 dl dd ul li.box_2 .box_ttl:before{
	content:"2";
}
.page_grammar_desc .content .sec_3 dl dd ul li.box_3 .box_ttl:before{
	content:"3";
}
.page_grammar_desc .content .sec_3 dl dd ul li figure{
	margin-bottom:10px;
}
.page_grammar_desc .content .sec_3 dl dd ul li p{
	font-size:14px;
	font-size:1.4rem;
}
.page_grammar_desc .content .recommend_table dd ul li span{
	color: #fff;
	background: #0bcafa;
	margin-right: 10px;
	padding: 2px;
}

/* section 4 */
e_grammar_desc .content .sec_4 ul .content_box p span{
	background: #00acec;
	margin-right: 10px;
	color: #fff;
	padding: 1px 5px;
	font-size: 16px; 
	font-size: 1.6rem;
}
.sec_4_text_img{
	text-align: center;
}
.sec_4 div .sec_4_img_quiz{
	display: inline-block;
}
.page_grammar_desc .content .sec_4 div .sec_4_img_activ{
	display: inline-block;
	margin-left: 45px;
}

/* section 5 */
.page_grammar_desc .content .sec_5 .entry_box .sec_ttl{
	border-left: solid 5px #deb203;
}
.page_grammar_desc .content .sec_5 .entry_box  dl{
	padding:  0 0 40px 10PX;
}
.page_grammar_desc .content .sec_5 .entry_box  dl dt{
	color: #deb203;
	font-size: 16px;
	font-size: 1.6rem;
	font-weight: bold;
}
.page_grammar_desc .content .sec_5 .entry_box  dl dd .text_red{
	color:#ff3838;
}
.page_grammar_desc .content .sec_5 .sec_left_line{
	padding: 0 5px;
}

.page_grammar_desc .content .sec_5 .entry_box .sec_left_line .entry_inner{
	position: relative;
	border-left: #deb203 2px solid;
	padding: 0 20px;
	margin: 0 10px;
}
.page_grammar_desc .content .sec_5 .entry_box .sec_left_line .entry_inner:last-child{
		border-left: none;
}

.page_grammar_desc .content .sec_5 .entry_box .sec_left_line .entry_inner .circle{
    background: #fbf1c8;
    display: inline-block;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    margin-right: 50%;
    position: absolute;
    border: #deb203 3px solid;
    left: -11px;
}
.page_grammar_desc .content .sec_5 .entry_box .sec_left_line .entry_inner:last-child  .circle{
	left:-9px;
}
/*beginner_middle*/
.page_grammar_desc .content .sec_5 .beginner_middle_box .sec_ttl{
	border-left: solid 5px #fb7750;
}
.page_grammar_desc .content .sec_5 .beginner_middle_box  dl{
	padding:  0 0 40px 10PX;
}
.page_grammar_desc .content .sec_5 .beginner_middle_box dl dt{
	color: #fb7750;
	font-size: 16px;
	font-size: 1.6rem;
	font-weight: bold;
}

.page_grammar_desc .content .sec_5 .beginner_middle_box .sec_left_line .beginner_middle_inner{
	position: relative;
	border-left: #fb7750 2px solid;
	padding: 0 20px;
	margin: 0 10px;
}
.page_grammar_desc .content .sec_5 .beginner_middle_box .sec_left_line .beginner_middle_inner .circle{
    background: #fedcd2;
    display: inline-block;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    margin-right: 50%;
    position: absolute;
    border: #fb7750 3px solid;
    left: -11px;
}
.page_grammar_desc .content .sec_5 .beginner_middle_box .sec_left_line .beginner_middle_inner:last-child{
		border-left: none;
}
.page_grammar_desc .content .sec_5 .beginner_middle_box .sec_left_line .beginner_middle_inner:last-child .circle{
	left:-9px;
}
/*advanced*/
.page_grammar_desc .content .sec_5 .advanced_box .sec_ttl{
	border-left: solid 5px #3f91cf;
}
.page_grammar_desc .content .sec_5 .advanced_box  dl{
	padding:  0 0 40px 10PX;
}
.page_grammar_desc .content .sec_5 .advanced_box dl dt{
	color: #3f91cf;
	font-size: 16px;
	font-size: 1.6rem;
	font-weight: bold;
}

.page_grammar_desc .content .sec_5 .advanced_box .sec_left_line .advanced_inner{
	position: relative;
	border-left: #3f91cf 2px solid;
	padding: 0 20px;
	margin: 0 10px;
}
.page_grammar_desc .content .sec_5 .advanced_box .sec_left_line .advanced_inner .circle{
    background: #bfe3fd;
    display: inline-block;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    margin-right: 50%;
    position: absolute;
    border: #3f91cf 3px solid;
    left: -11px;
}

.page_grammar_desc .content .sec_5 .advanced_box .sec_left_line .advanced_inner:last-child{
		border-left: none;
}
.page_grammar_desc .content .sec_5 .advanced_box .sec_left_line .advanced_inner:last-child .circle{
	left:-9px;
}

.page_grammar_desc .content .sec_5 .beginner_middle_inner dl dd,
.page_grammar_desc .content .sec_5 .entry_inner dl dd,
.page_grammar_desc .content .sec_5 .advanced_inner dl dd{
	font-size: 14px;
	font-size: 1.4rem;
}
.page_grammar_desc .simplified_chart{
	width: 100%;
	table-layout: fixed;
}
.page_grammar_desc .simplified_chart th,
.page_grammar_desc .simplified_chart td{
	border: 1px solid #ccc;
	padding: 1rem;
}
/* Lesson Video Section */
.page_grammar_desc .sec.sec_video{
    background-color: #fff;
}
.page_grammar_desc .sec.sec_video .sec_ttl{
    margin: 3rem 2rem;
    font-size: 2rem;
    font-weight: bold;
    color: #555555;
    text-align: center;
	font-weight: bold;
	padding-top: 3rem;
}
.page_grammar_desc .sec.sec_video .sec_ttl-2{
    margin: 1.5rem 2rem;
    font-size: 1.4rem;
    font-weight: bold;
    color: #555555;
    text-align: center;
	font-weight: bold;
}

.page_grammar_desc .sec.sec_video .desc_wrap{
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .lesson_video_item{
    border-radius: 10px;
    background: #F5F5F5;
    padding: 0rem 3rem 3rem;
    margin: 0;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .lesson_video_item-2{
    height: 24rem;
    border-radius: 10px;
    background: #F5F5F5;
    padding: 0rem 2rem 5rem;
    margin: 1rem;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-prev,
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-next{
    width: 3.5rem;
    height: 9.7rem;
    letter-spacing: 10px;
    overflow: hidden;
    z-index: 10;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-prev{
    left: -5rem;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-next{
    right: -5rem;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-prev::before,
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-next::before{
    font: normal normal bold 9.5rem/1 FontAwesome;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-prev::before{
    content: "\f104";
}
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-prev:before, .slick-next:before{
    color: #555;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-next::before{
    content: "\f105";
}
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-prev.slick-disabled:before, 
.page_grammar_desc .sec.sec_video #lesson_video_section .slick-next.slick-disabled:before{
    opacity: 0;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .video_box p{
    text-align: left;
    line-height: 1.7;
    margin-top: 2rem;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .video_box .wrap-16-9 {
    position: relative;
    width: 100%;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .video_box .wrap-16-9:before {
    content:"";
    display: block;
    padding-top: 56.25%;
}
.page_grammar_desc .sec.sec_video #lesson_video_section .video_box .wrap-16-9 > iframe {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.page_grammar_desc .sec.sec_video .btn_wrap a .t_natgeo{
	color: #555 !important;
}
.page_grammar_desc .sec.sec_video .btn_wrap a img{
	vertical-align: sub;
}
.page_grammar_desc .sec.sec_video .btn_style{
	border: none;	
	box-shadow: 0 3px 6px #0000004E;
	border-radius: 1rem;
	padding: .5rem 3rem;
	text-shadow: none !important;
}
.page_grammar_desc .sec.sec_video .btn_style.btn_grammar{
	background: #44BE90;
}
.page_grammar_desc .sec.sec_video .btn_style .fa.fa-external-link{
    font-size: inherit;
    color: #FFFFFF;
}
.page_grammar_desc .sec.sec_video .btn_style .fa.fa-external-link.grey{
    font-size: inherit;
    color: #555;
}

/* End Lesson Video Section */