.icon{width:24px;height:24px;fill:currentColor;display:inline-block;vertical-align:middle}.icon-sm{width:18px;height:18px}.icon-lg{width:32px;height:32px}.btn_close{background:none;border:none;cursor:pointer;color:#8e8e8e;color:var(--c-text-muted);transition:color .2s;padding:5px}.btn_close:hover{color:#fff;color:var(--c-text-main)}.progress_track{flex:1;height:12px;background-color:#2e2e2e;border-radius:10px;overflow:hidden}.progress_fill{height:100%;background-color:#23ac5e;background-color:var(--c-accent-green);border-radius:10px;width:0%;transition:width .5s cubic-bezier(.4,0,.2,1)}.lesson_task_area{display:flex;flex-direction:column;height:100%;width:100%}.task_wrapper{display:flex;flex-direction:column;width:100%;max-width:700px;max-width:var(--content-max-width);height:100%;justify-content:center;margin:0 auto}.lesson_layout{display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden;position:relative}.l_header{height:64px;height:var(--header-height);flex-shrink:0;background-color:#131415;background-color:var(--c-bg-body);display:flex;justify-content:center;z-index:2}.l_header_inner{width:100%;max-width:700px;max-width:var(--content-max-width);height:100%;display:flex;align-items:center;padding:0 20px}.l_main{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:10px;min-height:0}.l_footer{flex-shrink:0;background-color:#18191a;background-color:var(--c-bg-footer);border-top:2px solid #333333;border-top:2px solid var(--c-border);height:100px;height:var(--footer-height);display:flex;align-items:flex-end}.l_footer_inner{max-width:700px;max-width:var(--content-max-width);margin:0 auto;display:flex;flex-direction:column;padding-bottom:calc(25px + env(safe-area-inset-bottom));padding-bottom:calc(var(--btn-bottom-gap) + env(safe-area-inset-bottom));padding-left:20px;padding-right:20px;padding-top:24px;width:100%}.l_footer_inner>*+*{margin-top:24px}.btn_action:active{transform:translateY(2px);box-shadow:0 2px #0003}.btn_action.is_check,.btn_action.is_continue{background-color:#23ac5e;background-color:var(--c-accent-green)}.btn_action.is_error{background-color:#eb5757;background-color:var(--c-accent-red)}.btn_report_mini{background:none;border:none;padding-top:2px;cursor:pointer;color:#8e8e8e;color:var(--c-text-muted);opacity:.6;display:flex;align-items:center}.btn_report_mini:hover{opacity:1;color:var(--c-accent-red)}.btn_action:disabled,.btn_action.is_disabled{background-color:#333;color:#777;cursor:not-allowed;box-shadow:none;transform:none}.btn_action.is_disabled,.btn_action:disabled{filter:grayscale(1)!important;opacity:.5!important;background-color:#333!important;color:#777!important;cursor:not-allowed!important;pointer-events:none!important;box-shadow:none!important;transform:none!important}.btn_action{width:100%;max-width:500px;max-width:var(--action_button-max-width);margin:0 auto;padding:16px;border-radius:16px;border:none;font-size:15px;font-weight:800;text-transform:uppercase;letter-spacing:.8px;cursor:pointer;transition:transform .1s,opacity .2s;background-color:#1865f2;background-color:var(--c-accent-blue);color:#fff;box-shadow:0 4px #0003}@media(max-width:700px){.l_main,.task_wrapper{justify-content:flex-start}.task_instruction_label{display:block}}.feedback_overlay{position:absolute;bottom:0;left:0;width:100%;z-index:100;transform:translateY(100%);transition:transform .25s cubic-bezier(.25,1,.5,1);transition:transform .2s ease-in,opacity .2s ease-in;opacity:0;padding-bottom:env(safe-area-inset-bottom)}.feedback_overlay.is_active{transform:translateY(0);opacity:1;transition:transform .3s cubic-bezier(.25,1,.5,1),opacity .3s ease-out}.state_success{background-color:#1a2a21;background-color:var(--c-success-bg)}.state_error{background-color:#2b1d1d;background-color:var(--c-error-bg)}.feedback_box{display:flex;justify-content:space-between;align-items:flex-start;min-height:50px;width:100%;max-width:500px;max-width:var(--action_button-max-width);margin:0 auto}.feedback_content{display:flex;flex-direction:column}.feedback_title{font-size:24px;font-weight:900;line-height:1}.state_success .feedback_title{color:var(--c-accent-green)}.state_error .feedback_title{color:var(--c-accent-red)}.feedback_answer{margin-top:8px;margin-bottom:20px;color:#fff;font-size:16px;opacity:.9}.feedback_answer b{font-weight:800;color:#eb5757;color:var(--c-accent-red)}.report_options{display:flex;flex-direction:column;margin-bottom:20px}.report_options .c_option{justify-content:center;text-align:center;padding:16px;padding:var(--space-lg);font-size:15px;min-height:54px;margin-left:0!important;transition:transform .1s,border-color .2s;margin-top:0}.report_options .c_option+.c_option{margin-top:10px}.report_options .c_option:hover{transform:translateY(-1px);background-color:#2a2a2a}#popup_report_task .c_input_field{margin-top:12px;width:100%;min-height:100px;background-color:#1a1a1a;border:2px solid #333333;border:2px solid var(--c-border);border-radius:12px;padding:14px;color:#fff;font-size:15px;resize:none}#popup_report_task .c_input_field:focus{border-color:#1865f2;border-color:var(--c-accent-blue);outline:none}.quit_lesson_box{text-align:center;padding:10px 0}.quit_icon_wrap{width:80px;height:80px;background:#ef44441a;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;color:#eb5757;color:var(--c-accent-red)}.quit_icon_wrap .g_icon{width:40px;height:40px}.quit_title{color:#fff;font-size:20px;font-weight:800;margin-top:0;margin-bottom:12px}.quit_desc{color:#8e8e8e;color:var(--c-text-muted);line-height:1.5;margin-bottom:32px}.quit_actions{display:flex;flex-direction:column}.quit_actions .btn_action+.btn_action{margin-top:12px}.btn_action.is_secondary{background:transparent;border:2px solid #333;color:#8e8e8e;color:var(--c-text-muted);box-shadow:none}.btn_action.is_secondary:hover{border-color:#fff;color:#fff}.btn_action.is_secondary:active{transform:translateY(2px)}.lesson_hearts{display:flex;align-items:center;justify-content:flex-end}.lesson_heart{margin-left:6px}.l_header_gear{margin-left:8px;margin-left:var(--space-sm)}.warn_icon{fill:#ffa000}.report_comment{margin-bottom:20px;margin-bottom:var(--space-xl)}.settings_section{padding:10px 0 20px;padding:10px 0 var(--space-xl)}.settings_section_label{color:#8e8e8e;color:var(--c-text-muted);font-size:13px;margin-bottom:12px;margin-bottom:var(--space-md);text-transform:uppercase;letter-spacing:.5px}.volume_row{display:flex;align-items:center}.volume_row>*+*{margin-left:var(--space-md)}.volume_icon{color:#8e8e8e;color:var(--c-text-muted);flex-shrink:0}.volume_slider{flex:1;accent-color:#1865f2;accent-color:var(--c-accent-blue)}