.lessonIntroduction_lesson-introduction-container__JknFX{width:100%;height:100%}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7{width:100%;height:auto}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_introduction__mZhk0{position:relative;height:5.81333rem;overflow:hidden}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab__5Fpl3{display:flex;width:100%;height:.84rem;padding:0 .61333rem 0 .52rem}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab__5Fpl3 .lessonIntroduction_tab-wrap-bg__jRftL{margin-top:.10667rem;display:flex;width:100%;height:.84rem}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab__5Fpl3 .lessonIntroduction_tab-wrap-bg__jRftL .lessonIntroduction_tab-wrap__bEzmq{position:relative;display:flex;height:.84rem;width:100%}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab__5Fpl3 .lessonIntroduction_tab-wrap-bg__jRftL .lessonIntroduction_tab-wrap__bEzmq .lessonIntroduction_tab__2T3Lo{flex:1;height:.84rem;padding:0 .4rem;line-height:.84rem;background:#f3f3f3;text-align:center;font-size:.29333rem;font-weight:700;border-radius:.2rem .2rem 0 0}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab__5Fpl3 .lessonIntroduction_tab-wrap-bg__jRftL .lessonIntroduction_tab-wrap__bEzmq .lessonIntroduction_division__3thHN{position:absolute;right:0;bottom:.14667rem;height:.4rem;width:.02667rem;background:#c6c6c6}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_nav-wrap-sticky__3Czf3{position:fixed;z-index:7;height:1.04rem;background:#fff}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_nav-wrap-sticky__3Czf3 .lessonIntroduction_tab-wrap-bg__jRftL{background:#f3f3f3;border-radius:.2rem}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_nav-wrap-sticky__3Czf3 .lessonIntroduction_tab-wrap-bg__jRftL .lessonIntroduction_tab-wrap__bEzmq .lessonIntroduction_tab__2T3Lo{border-radius:.2rem}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_placeHoder__uF_UF{height:.94667rem}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab-content__OE_RA{margin:0 .6rem 0 .52rem;padding-bottom:.57333rem;background:#fff}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab-content__OE_RA .lessonIntroduction_img-wrap__Nj5bq{position:relative;height:9.2rem}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab-content__OE_RA .lessonIntroduction_operation__JsXPr{display:flex;justify-content:center;margin:0 .52rem 0 .54667rem;height:.74667rem}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab-content__OE_RA .lessonIntroduction_operation__JsXPr .lessonIntroduction_btn__lVnZo{margin-right:.21333rem}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab-content__OE_RA .lessonIntroduction_operation__JsXPr .lessonIntroduction_btn__lVnZo:last-child{margin-right:0}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab-content__OE_RA .lessonIntroduction_operation__JsXPr .lessonIntroduction_detail__RhYzB{position:relative;min-width:3.8rem;height:.74667rem;font-size:.32rem;color:#2d84f0;line-height:.74667rem;text-align:center;border-radius:.37333rem;border:.02667rem solid #2d84f0}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab-content__OE_RA .lessonIntroduction_operation__JsXPr .lessonIntroduction_contact__ZVyMe{min-width:3.8rem;height:.74667rem;line-height:.74667rem;font-size:.32rem;background:#ffe665;text-align:center;border-radius:.37333rem;opacity:1}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab-content__OE_RA .lessonIntroduction_operation__JsXPr .lessonIntroduction_updating__jHRqp{width:3.8rem;height:.74667rem;border-radius:.37333rem;opacity:1;border:.02667rem solid #2d84f0;font-size:.32rem;color:#2d84f0;line-height:.74667rem;text-align:center}.lessonIntroduction_lesson-introduction-container__JknFX .lessonIntroduction_content__Cn9Z7 .lessonIntroduction_lesson-tab-container__it0VR .lessonIntroduction_lesson-wrap__SbtqY .lessonIntroduction_lesson-tab-radius___VPc_{border-radius:.2rem}