@charset "utf-8"; /* skipnavi */

.sub_section_01 .video_wrap { background-color: #000; max-height:745px; text-align:center; }
.sub_section_01 .video_wrap video{}
/* video::-webkit-media-controls-play-button { background: url(../images/arrow_drop_down.svg) no-repeat; width: 24px; height: 24px; } */

/* sub_section_02 */
.sub_section_02 .introduction_lecture { padding: 50px 0; position: relative; } 
.sub_section_02 .introduction_lecture::after { position: absolute; content: ''; left: 0; bottom: 0; width: 100%; height: 1px; background-color: #000; } 
.sub_section_02 .introduction_lecture h3 { font-size: 26px; font-weight: 800; } 
.sub_section_02 .introduction_lecture .lecture_info { padding-top: 10px; color: #7b7b7b; display: flex; gap: 5px; } 
.sub_section_02 .introduction_lecture .present_lecture, .sub_section_02 .present_lecture div, .sub_section_02 .present_lecture span { color: #7b7b7b; display:inline-block;} 

.sub_section_02 .edu_keyword_wrap { padding: 50px 30px; display: flex; gap: 30px; align-items: center; position: relative; } 
.sub_section_02 .edu_keyword_wrap::after { position: absolute; content: ''; left: 0; bottom: 0; width: 100%; height: 1px; background-color: #7c7c7c; } 
.sub_section_02 .edu_keyword_wrap h4 { font-size: 20px; } 
.sub_section_02 .edu_keyword_wrap ul { display: flex; gap: 5px; } 
.sub_section_02 .edu_keyword_wrap ul li{display: inline-block;margin: 3px 0;}
.sub_section_02 .edu_keyword_wrap ul li a { font-size: 14px; color: #555; padding: 7px 15px; border: 1px solid #d2d2d2; border-radius: 25px; font-weight: 600; background-color: #fff; white-space: nowrap;display: inline-block;} 
.sub_section_02 .edu_keyword_wrap .arrow_down { background: url(../images/keyboard_arrow_down_point.svg) no-repeat 100%; width: 24px; height: 24px; position: absolute; right: 0; border-radius: 50px; border: 1px solid #ededed; padding: 20px; background-position: 8px 9px; } 
.sub_section_02 .edu_keyword_wrap .arrow_down:hover { border-color: #537ef4; box-shadow: 0 0 10px rgba(51, 61, 112, 0.28); transition: 0.5s; } 

/* .sub_section_02 .current_situation { margin: 30px 0; border: 1px solid #b0bee1; padding: 30px 60px; border-radius: 10px; display: flex; justify-content: space-between; align-items: center; } 
.sub_section_02 .current_situation > div { text-align: center; } 
.sub_section_02 .current_situation .title { font-size: 20px; font-weight: 400; } 
.sub_section_02 .current_situation .small { font-size: 14px; font-weight: 400; } */

/* 타임라인 챕터요약 */
/*.sub_section_02 .summary_box_wrap { margin: 30px 0; display: flex; justify-content: space-between; } */
.sub_section_02 .summary_box_wrap .box { margin-top:30px;border: 1px solid #dcdcdc; border-radius: 10px; padding: 40px; max-height: 340px; overflow: auto; display: flex; gap: 40px; flex-wrap: wrap;} 
.sub_section_02 .summary_box_wrap .box h4 { font-size: 20px; margin-bottom: 20px; position: relative; padding-left: 40px;width:100%; } 
.sub_section_02 .summary_box_wrap .box h4::before { content: ''; position: absolute; left: 0; } 
.sub_section_02 .summary_box_wrap .title_line.box h4::before { content: ''; position: absolute; left: 0; background: url(../images/schedule.svg) no-repeat 100%; width: 30px; height: 30px; background-size: 100%; } 
.sub_section_02 .summary_box_wrap .summary_line.box h4::before { content: ''; position: absolute; left: 0; background: url(../images/menu_book.svg) no-repeat 100%; width: 30px; height: 30px; background-size: 100%; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list { display: flex; gap: 30px; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul li { margin-bottom: 5px; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul li:last-child { margin-bottom: 0; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul.time_wrap li { color: #808080; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul.text_list li { font-weight: 400; position: relative; padding-left: 15px; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul.text_list li::before { content: ''; position: absolute; width: 5px; height: 5px; left: 0; top: calc(50% - 2.5px); background-color: #555; border: 1px solid #555; border-radius: 50px; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul.text_list li:nth-child(1)::before { background-color: #4776eb; border: 1px solid #4776eb; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul.text_list li:nth-child(2)::before { background-color: #00c471; border: 1px solid #00c471; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul.text_list li:nth-child(3)::before { background-color: #a54cfe; border: 1px solid #a54cfe; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul.text_list li:nth-child(4)::before { background-color: #f53c41; border: 1px solid #f53c41; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul.text_list li:nth-child(5)::before { background-color: #f5ba3c; border: 1px solid #f5ba3c; } 
.sub_section_02 .summary_box_wrap .title_line .timeline_list ul.text_list li:nth-child(6)::before { background-color: #3cf5e6; border: 1px solid #3cf5e6; } 

.sub_section_02 .summary_box_wrap .summary_line.box .time_flex { display: flex; justify-content: space-between; } 
.sub_section_02 .summary_box_wrap .summary_line.box .start_time { color: #7b7b7b; font-size: 14px; } 
.sub_section_02 .summary_box_wrap .summary_line.box .text_box { padding-top: 15px; padding-bottom: 15px; position: relative; width: calc((100% / 2) - 25px); } 
.sub_section_02 .summary_box_wrap .summary_line.box .text_box::after { position: absolute; content: ''; width: 100%; height: 1px; background-color: #dcdcdc; left: 0; bottom: 0; } 

.sub_section_02 .summary_box_wrap .summary_line.box .text_box:nth-of-type(1) { /*padding-top: 0; */} 
.sub_section_02 .summary_box_wrap .summary_line.box .text_box:last-child { /*padding-bottom: 0;*/ } 
.sub_section_02 .summary_box_wrap .summary_line.box .text_box .title { font-weight: 400; } 
.sub_section_02 .summary_box_wrap .summary_line.box .text_box .text { color: #7b7b7b; font-size: 14px; } 

/* 강좌 카드 */
.sub_section_03 { margin-top: 80px; } 
.sub_section_03 .recommendation { display: flex; justify-content: space-between; align-items: center;  margin-bottom: 30px; } 
.sub_section_03 .recommendation .more_icon { background: url(../images/add.svg) no-repeat 100%; width: 24px; height: 24px; position: absolute; right: 0; border-radius: 50px; border: 1px solid #ededed; padding: 20px; background-position: 8px 9px; } 
.sub_section_03 .recommendation .more_icon:hover{ border-color: #537ef4; box-shadow: 0 0 10px rgba(51, 61, 112, 0.28); transition: 0.5s; } 

.sub_section_03 .recommendation h3 { font-size: 20px; }