:root{--sidebar:220px;--sidebar-collapsed:64px}.tw_shell{height:var(--vh,var(--vh,100vh));background:var(--bg);align-items:stretch;display:flex}.tw_shell_body{flex-direction:column;flex:1;min-width:0;min-height:0;display:flex}.tw_shell_full{flex-direction:column}.tw_shell_content{flex:1;min-width:0;min-height:0;overflow:hidden auto}.tw_sidebar{width:var(--sidebar);height:var(--vh,var(--vh,100vh));flex-direction:column;flex:0 0 var(--sidebar);background:var(--charcoal);color:#fff;z-index:40;align-self:flex-start;padding:18px 12px 14px;transition:width .16s,flex-basis .16s;display:flex;position:sticky;top:0}.tw_sidebar.is_collapsed{width:var(--sidebar-collapsed);flex-basis:var(--sidebar-collapsed);padding-left:8px;padding-right:8px}.tw_sidebar.is_collapsed .tw_sb_nav_label,.tw_sidebar.is_collapsed .tw_sb_profile_name,.tw_sidebar.is_collapsed .tw_sb_create_label,.tw_sidebar.is_collapsed .tw_sb_collapse_label,.tw_sidebar.is_collapsed .tw_sb_nav_class_info{display:none}.tw_sb_logo{cursor:pointer;justify-content:center;align-items:center;height:34px;margin-bottom:16px;display:flex}.tw_sb_logo img{object-fit:contain;max-width:100%;max-height:100%}.tw_sidebar.is_collapsed .tw_sb_logo img{object-fit:cover;object-position:left center}.tw_sb_profile{width:100%;color:inherit;cursor:pointer;text-align:center;background:0 0;border:0;border-radius:14px;flex-direction:column;align-items:center;gap:10px;margin-bottom:16px;padding:18px 10px 16px;transition:background .14s;display:flex}.tw_sb_profile:hover{background:#ffffff0f}.tw_sb_avatar{background:#3a3d42;border-radius:12px;flex:none;width:76px;height:101px;overflow:hidden;box-shadow:0 0 0 2px #ffffff29}.tw_sb_avatar img{object-fit:cover;width:100%;height:100%;display:block}.tw_sb_profile_name{color:#fff;white-space:nowrap;text-overflow:ellipsis;max-width:100%;font-size:17px;font-weight:700;overflow:hidden}.tw_sb_profile_honorific{color:#ffffff9e;font-weight:400}.tw_sidebar.is_collapsed .tw_sb_profile{gap:0;padding:8px}.tw_sidebar.is_collapsed .tw_sb_avatar{border-radius:8px;width:38px;height:50px}.tw_sb_nav{flex-direction:column;gap:2px;display:flex}.tw_sb_nav_btn{color:#ffffffc7;cursor:pointer;text-align:left;background:0 0;border:0;border-radius:10px;align-items:center;gap:10px;width:100%;padding:10px 12px;font-size:14px;transition:background .14s,color .14s;display:flex}.tw_sb_nav_btn:hover{color:#fff;background:#ffffff17}.tw_sb_nav_btn.active{background:var(--orange);color:#fff;font-weight:600}.tw_sidebar.is_collapsed .tw_sb_nav_btn{justify-content:center;padding:10px 0}.tw_sb_nav_icon{opacity:.9;flex:none;justify-content:center;align-items:center;width:20px;font-size:15px;line-height:1;display:inline-flex}.tw_sb_collapse{color:#ffffffad;text-align:left;cursor:pointer;background:0 0;border:0;border-top:1px solid #ffffff24;border-radius:0;align-items:center;gap:10px;width:100%;margin-top:auto;padding:10px 12px;font-size:13px;font-weight:500;line-height:1;transition:background .14s,color .14s;display:flex}.tw_sb_collapse:hover{color:#fff;background:#ffffff1a}.tw_sb_collapse_icon{flex:none;justify-content:center;align-items:center;width:18px;font-size:16px;display:inline-flex}.tw_sidebar.is_collapsed .tw_sb_collapse{justify-content:center;padding:10px 0}@media (max-width:1100px){.tw_sidebar{width:var(--sidebar-collapsed);flex-basis:var(--sidebar-collapsed);padding-left:8px;padding-right:8px}.tw_sidebar .tw_sb_nav_label,.tw_sidebar .tw_sb_profile_name,.tw_sidebar .tw_sb_create_label,.tw_sidebar .tw_sb_collapse_label,.tw_sidebar .tw_sb_nav_class_info{display:none}.tw_sb_nav_btn{justify-content:center;padding:10px 0}.tw_sb_profile{gap:0;padding:8px}.tw_sb_avatar{border-radius:8px;width:38px;height:50px}.tw_sb_collapse{justify-content:center;padding:10px 0}}@media (max-width:768px){.tw_sidebar{display:none}}
.bottom-nav{z-index:100;height:var(--bottomnav,64px);background:var(--surface,#fff);border-top:1px solid var(--line,#e6e8ec);align-items:stretch;display:flex;position:fixed;bottom:0;left:0;right:0}.bottom-nav-item{color:var(--muted,#747b86);cursor:pointer;background:0 0;border:none;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;padding:6px 0;display:flex}.bottom-nav-item.active{color:var(--orange,#f27a2c)}.bottom-nav-label{font-size:11px;font-weight:600}.has-bottom-nav{padding-bottom:var(--bottomnav,64px)}@media (min-width:1200px){.bottom-nav{display:none}.has-bottom-nav{padding-bottom:0}}
.lecture-info-panel{flex-direction:column;gap:16px;display:flex}.lecture-info-card{background:var(--surface,#fff);border:1px solid var(--line,#e6e8ec);border-radius:var(--radius,14px);padding:18px 20px}.lecture-info-card-header{align-items:center;gap:8px;margin-bottom:10px;display:flex}.lecture-info-card-header h3{color:var(--text,#1f242c);margin:0;font-size:16px;font-weight:700}.lecture-info-card-title{color:var(--text,#1f242c);margin:0 0 4px;font-size:15px;font-weight:600}.lecture-info-card-sub{color:var(--muted,#747b86);margin:0;font-size:13px}.lecture-info-card-desc{color:var(--text,#1f242c);font-size:14px}.lecture-info-card-link-btn{background:var(--orange-soft,#fff3ea);color:var(--orange,#f27a2c);cursor:pointer;border:none;border-radius:100px;margin-top:10px;padding:6px 16px;font-size:13px;font-weight:700}.lecture-report-summary-empty{text-align:center;color:var(--muted,#747b86);padding:40px 0;font-size:14px}.lecture-report-summary-header{color:var(--text,#1f242c);justify-content:space-between;align-items:center;margin-bottom:12px;font-size:14px;font-weight:600;display:flex}.lecture-report-summary-all-btn{color:var(--orange,#f27a2c);cursor:pointer;background:0 0;border:none;font-size:13px;font-weight:700}.lecture-report-summary-list{flex-direction:column;gap:8px;display:flex}.lecture-report-summary-item{background:var(--bg,#f6f7f9);cursor:pointer;border-radius:10px;justify-content:space-between;align-items:center;padding:12px 14px;display:flex}.lecture-report-summary-item-title{color:var(--text,#1f242c);font-size:14px;font-weight:600}.lecture-report-summary-item-date{color:var(--muted,#747b86);font-size:12px}
.lecture_detail_desktop_container .lc_page{width:100%;max-width:1680px;color:var(--text,#1f242c);margin:0 auto;padding:32px 36px 60px}.lc_heading_row{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:20px;display:flex}.lc_back_link{color:var(--muted,#747b86);cursor:pointer;background:0 0;border:0;padding:0 0 8px;font-size:14px;font-weight:700}.lc_heading_row h1{margin:0;font-size:32px;font-weight:800}.lc_subtitle{color:var(--muted,#747b86);margin:8px 0 0;font-size:15px}.lc_quick_actions{flex-wrap:wrap;gap:10px;display:flex}.lc_ghost_btn{border:1px solid var(--line,#e6e8ec);background:var(--surface,#fff);color:var(--text,#1f242c);cursor:pointer;border-radius:12px;padding:12px 17px;font-size:14px;font-weight:700}.lc_ghost_btn:hover{border-color:var(--orange,#f27a2c);color:var(--orange,#f27a2c)}.lc_hero{background:var(--surface,#fff);border:1px solid var(--line,#e6e8ec);border-radius:var(--radius,14px);box-shadow:var(--shadow,0 5px 18px #191e2d0f);grid-template-columns:1.4fr 1fr 280px;align-items:center;gap:24px;margin-bottom:12px;padding:22px 24px;display:grid}.lc_hero_item+.lc_hero_item{border-left:1px solid var(--line2,#eef0f3);padding-left:24px}.lc_hero_label{color:var(--muted,#747b86);margin-bottom:6px;font-size:13px;font-weight:700}.lc_hero_value{flex-wrap:wrap;align-items:center;gap:10px;font-size:22px;font-weight:800;display:flex}.lc_hero_value_sm{font-size:18px}.lc_teacher_display{align-items:center;gap:10px;display:flex}.lc_teacher_avatar{object-fit:cover;border-radius:50%;flex-shrink:0;width:40px;height:40px}.lc_teacher_avatar_fallback{flex-shrink:0;width:40px;height:40px}.lc_hero_dday{color:var(--orange,#f27a2c);border:1px solid var(--orange-soft,#fff3ea);border-radius:7px;padding:3px 8px;font-size:13px;font-weight:800}.lc_hero_actions{justify-content:flex-end;display:flex}.lc_primary_btn{background:var(--orange,#f27a2c);color:#fff;cursor:pointer;border:0;border-radius:12px;width:100%;padding:18px 24px;font-size:17px;font-weight:800}.lc_primary_btn:disabled{background:var(--line,#e6e8ec);color:var(--muted,#747b86);cursor:not-allowed}.lc_sub_actions{flex-wrap:wrap;justify-content:flex-end;gap:10px;margin-bottom:12px;display:flex}.lc_outline_btn{border:1px solid var(--orange,#f27a2c);color:var(--orange,#f27a2c);cursor:pointer;background:#fff;border-radius:10px;padding:11px 20px;font-size:14px;font-weight:700}.lc_outline_btn:disabled{border-color:var(--line,#e6e8ec);color:var(--muted,#747b86);cursor:not-allowed}.lc_tabs{border-bottom:1px solid var(--line,#e6e8ec);gap:28px;margin:20px 0 22px;display:flex;overflow-x:auto}.lc_tab{color:var(--muted,#747b86);cursor:pointer;white-space:nowrap;background:0 0;border:0;align-items:center;gap:6px;padding:12px 2px 14px;font-size:16px;font-weight:700;display:flex;position:relative}.lc_tab.active{color:var(--orange,#f27a2c)}.lc_tab.active:after{content:"";background:var(--orange,#f27a2c);height:2px;position:absolute;bottom:-1px;left:0;right:0}.lc_tab_badge{background:var(--orange,#f27a2c);color:#fff;border-radius:99px;place-items:center;min-width:18px;height:18px;padding:0 5px;font-size:11px;font-weight:800;line-height:1;display:inline-grid}.lc_tab_content{min-height:240px}.lc_notice_list{flex-direction:column;gap:10px;display:flex}.lc_notice_card{background:var(--surface,#fff);border:1px solid var(--line,#e6e8ec);border-radius:var(--radius,14px);overflow:hidden}.lc_notice_card.open{border-color:var(--orange-soft,#fff3ea)}.lc_notice_head{cursor:pointer;text-align:left;background:0 0;border:0;justify-content:space-between;align-items:center;gap:16px;width:100%;padding:16px 20px;display:flex}.lc_notice_head_main{align-items:center;gap:8px;min-width:0;display:flex}.lc_notice_title{color:var(--text,#1f242c);text-overflow:ellipsis;white-space:nowrap;font-size:15px;font-weight:700;overflow:hidden}.lc_notice_pin,.lc_notice_new{border-radius:6px;flex-shrink:0;padding:3px 7px;font-size:11px;font-weight:800}.lc_notice_pin{background:var(--blue-soft,#eef4ff);color:var(--blue,#3f7de0)}.lc_notice_new{background:var(--orange-soft,#fff3ea);color:var(--orange,#f27a2c)}.lc_notice_head_meta{color:var(--muted,#747b86);flex-shrink:0;align-items:center;gap:12px;font-size:12px;display:flex}.lc_notice_caret{color:var(--muted,#747b86)}.lc_notice_body{border-top:1px solid var(--line2,#eef0f3);color:var(--text,#1f242c);padding:16px 20px 18px;font-size:14px;line-height:1.7}@media (max-width:1100px){.lc_hero{grid-template-columns:1fr 1fr}.lc_hero_actions{grid-column:1/-1}.lc_primary_btn{width:auto;min-width:240px}}@media (max-width:720px){.lecture_detail_desktop_container .lc_page{padding:20px 16px 40px}.lc_hero{grid-template-columns:1fr;gap:16px}.lc_hero_item+.lc_hero_item{border-left:0;border-top:1px solid var(--line2,#eef0f3);padding-top:16px;padding-left:0}.lc_heading_row h1{font-size:24px}.lc_notice_head_meta span:not(.lc_notice_caret){display:none}}.lc_asg_list{flex-direction:column;gap:14px;display:flex}.lc_asg_card{background:var(--surface,#fff);border:1px solid var(--line,#e6e8ec);border-radius:var(--radius,14px);cursor:pointer;grid-template-columns:92px minmax(0,1fr) 150px;align-items:center;gap:20px;padding:20px 22px;display:grid}.lc_asg_card:hover{border-color:var(--orange-soft,#fff3ea)}.lc_asg_card.urgent{border-color:var(--orange,#f27a2c);background:linear-gradient(180deg,var(--orange-soft,#fff3ea),var(--surface,#fff))}.lc_asg_status{text-align:center;white-space:nowrap;border-radius:10px;padding:10px 6px;font-size:15px;font-weight:800}.lc_asg_status.is_unsubmitted{color:var(--red,#e34855);background:var(--red-soft,#fff0f2)}.lc_asg_status.is_submitted{color:var(--green,#18a565);background:var(--green-soft,#eaf8f1)}.lc_asg_status.is_pending{color:var(--blue,#3f7de0);background:var(--blue-soft,#eef4ff)}.lc_asg_status.is_graded{color:var(--orange,#f27a2c);background:var(--orange-soft,#fff3ea)}.lc_asg_title{color:var(--text,#1f242c);margin:0 0 8px;font-size:20px;font-weight:800}.lc_asg_meta{color:var(--muted,#747b86);margin-top:6px;font-size:13px;line-height:1.7}.lc_asg_meta b{color:var(--text,#1f242c);font-weight:700}.lc_asg_sep{color:var(--line,#e6e8ec);margin:0 4px}.lc_asg_dday{color:var(--orange,#f27a2c);border:1px solid var(--orange-soft,#fff3ea);border-radius:7px;margin-left:8px;padding:2px 7px;font-size:12px;font-weight:800;display:inline-block}.lc_asg_dday.overdue{color:var(--red,#e34855);border-color:var(--red-soft,#fff0f2)}.lc_asg_desc{color:var(--muted,#747b86);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:10px 0 0;font-size:13px;line-height:1.6;display:-webkit-box;overflow:hidden}.lc_asg_actions{flex-direction:column;justify-content:flex-end;gap:8px;display:flex}.lc_asg_btn_primary,.lc_asg_btn_outline{cursor:pointer;border-radius:10px;width:100%;padding:12px 16px;font-size:14px;font-weight:800}.lc_asg_btn_primary{background:var(--orange,#f27a2c);color:var(--surface,#fff);border:0}.lc_asg_btn_outline{border:1px solid var(--line,#e6e8ec);background:var(--surface,#fff);color:var(--text,#1f242c)}.lc_asg_btn_sub{border:1px solid var(--line,#e6e8ec);background:var(--surface,#fff);width:100%;color:var(--muted,#747b86);cursor:pointer;border-radius:10px;padding:8px 12px;font-size:13px;font-weight:700}.lc_asg_btn_sub:hover{border-color:var(--orange,#f27a2c);color:var(--orange,#f27a2c)}@media (max-width:860px){.lc_asg_card{grid-template-columns:1fr;gap:12px}.lc_asg_status{justify-self:start;padding:6px 14px;font-size:13px}.lc_asg_title{font-size:17px}.lc_asg_actions{justify-content:stretch}}
.assignments-page{min-height:var(--vh,100vh);background:var(--bg,#f6f7f9)}.assignments-page-inner{max-width:720px;margin:0 auto;padding:84px 16px 40px}@media (min-width:1024px){.assignments-page-inner{max-width:1680px;padding:90px 36px 60px}}.assignments-page-header h1{color:var(--text,#1f242c);margin:0 0 4px;font-size:24px;font-weight:800}.assignments-page-header p{color:var(--muted,#747b86);margin:0 0 20px;font-size:14px}.assignments-loading{text-align:center;color:var(--muted,#747b86);padding:60px 0}.assignments-quicknav{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-bottom:16px;display:grid}.assignments-quicknav-item{background:var(--surface,#fff);border:1px solid var(--line,#e6e8ec);color:var(--muted,#747b86);cursor:pointer;border-radius:12px;justify-content:center;align-items:center;padding:14px 8px;font-size:14px;font-weight:700;display:flex}.assignments-quicknav-item.active{border-color:var(--orange,#f27a2c);color:var(--orange,#f27a2c);background:var(--orange-soft,#fff3ea)}.assignments-kpi-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:16px;display:grid}@media (min-width:640px){.assignments-kpi-row{grid-template-columns:repeat(4,minmax(0,1fr))}}.assignments-kpi-box{background:var(--surface,#fff);border:1px solid var(--line,#e6e8ec);border-radius:12px;align-items:center;gap:10px;padding:16px 18px;display:flex}.assignments-kpi-label{color:var(--muted,#747b86);white-space:nowrap;font-size:14px;font-weight:600}.assignments-kpi-sep{color:var(--line,#e6e8ec);font-weight:400}.assignments-kpi-value{color:var(--text,#1f242c);font-size:20px;font-weight:800}.assignments-kpi-value.orange{color:var(--orange,#f27a2c)}.assignments-kpi-value.blue{color:var(--blue,#3f7de0)}.assignments-kpi-value.green{color:var(--green,#18a565)}.assignments-lecture-select{border:1px solid var(--line,#e6e8ec);background:var(--surface,#fff);border-radius:10px;width:100%;height:44px;margin-bottom:12px;padding:0 12px;font-size:16px}.assignments-filter-tabs{gap:6px;margin-bottom:16px;display:flex;overflow-x:auto}.assignments-filter-tab{background:var(--surface,#fff);border:1px solid var(--line,#e6e8ec);color:var(--muted,#747b86);cursor:pointer;white-space:nowrap;border-radius:100px;flex-shrink:0;padding:8px 16px;font-size:13px;font-weight:600}.assignments-filter-tab.active{background:var(--orange,#f27a2c);border-color:var(--orange,#f27a2c);color:#fff}.assignments-card-list{flex-direction:column;gap:12px;margin-bottom:20px;display:flex}.assignments-empty{text-align:center;color:var(--muted,#747b86);padding:40px 0}.assignments-card{background:var(--surface,#fff);border:1px solid var(--line,#e6e8ec);border-radius:var(--radius,14px);padding:16px 18px}.assignments-card-body{flex-direction:column;display:flex}.assignments-card-main{flex:1;min-width:0}.assignments-card-title-row{justify-content:space-between;align-items:center;gap:8px;display:flex}.assignments-card-title-row h3{color:var(--text,#1f242c);text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:15px;font-weight:700;overflow:hidden}.assignments-status-badge{border-radius:100px;flex-shrink:0;padding:3px 10px;font-size:12px;font-weight:700}.assignments-status-badge.status-unsubmitted{background:var(--red-soft,#fff0f2);color:var(--red,#e34855)}.assignments-status-badge.status-pending{background:var(--blue-soft,#eef4ff);color:var(--blue,#3f7de0)}.assignments-status-badge.status-arrived{background:var(--green-soft,#eaf8f1);color:var(--green,#18a565)}.assignments-card-lecture{color:var(--muted,#747b86);margin:4px 0 0;font-size:12px}.assignments-card-due{color:var(--muted,#747b86);flex-wrap:wrap;align-items:center;gap:8px;margin:4px 0 0;font-size:12px;display:flex}.assignments-card-dday{background:var(--orange-soft,#fff3ea);color:var(--orange,#f27a2c);border-radius:100px;padding:1px 8px;font-weight:700}.assignments-card-attach{color:var(--muted,#747b86)}.assignments-card-desc{color:var(--text,#1f242c);text-overflow:ellipsis;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:8px 0 0;font-size:13px;display:-webkit-box;overflow:hidden}.assignments-card-action-btn{background:var(--orange,#f27a2c);color:#fff;cursor:pointer;border:none;border-radius:100px;width:100%;margin-top:12px;padding:10px 0;font-size:14px;font-weight:700}@media (min-width:1024px){.assignments-card-body{flex-direction:row;justify-content:space-between;align-items:center;gap:24px}.assignments-card-action-btn{flex-shrink:0;width:auto;margin-top:0;padding:12px 28px}}.assignments-modal-overlay{z-index:1000;background:#00000080;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.assignments-modal{background:var(--surface,#fff);border-radius:var(--radius,14px);box-shadow:var(--shadow);width:100%;max-width:520px;max-height:85vh;padding:22px 24px 26px;overflow-y:auto}.assignments-modal-header{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:16px;display:flex}.assignments-modal-header h3{color:var(--text,#1f242c);margin:0;font-size:17px;font-weight:800}.assignments-modal-close{color:var(--muted,#747b86);cursor:pointer;background:0 0;border:none;padding:2px 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30px}.assignment-write-mobile-tabs{display:flex}.assignment-write-columns{grid-template-columns:1fr}.assignment-write-col-left>.assignment-write-panel,.assignment-write-col-center>.assignment-write-panel{height:auto}.assignment-write-textarea{flex:none;min-height:260px}.pdf-viewer-body,.image-attachment-viewer-canvas{min-height:480px}.assignment-write-col-left{display:none}.assignment-write-col-left.mobile-active{display:flex}.assignment-write-col-center.mobile-active{display:block}.assignment-write-col-center{display:none}.assignment-write-meta-top{flex-direction:column;align-items:stretch}.assignment-write-meta-actions{align-items:stretch}.assignment-write-meta-actions-buttons{flex-wrap:wrap}.assignment-write-btn-outline,.assignment-write-btn-primary{text-align:center;flex:1}}.outline-pad{flex-direction:column;gap:10px;padding:4px 0;display:flex}.outline-pad-modes{align-items:center;gap:6px;display:flex}.outline-pad-mode-btn{border:1px solid 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