:root{--app-theme-primary: #3b82f6;--app-theme-dark: #1d4ed8;--app-theme-soft: rgba(59, 130, 246, .16);--app-theme-ring: rgba(59, 130, 246, .14);--course-theme-primary: var(--app-theme-primary);--course-theme-dark: var(--app-theme-dark);--course-theme-soft: var(--app-theme-soft);--course-theme-ring: var(--app-theme-ring);--course-theme-sidebar-start: #172554;--course-theme-sidebar-mid: #1d4ed8;--course-theme-sidebar-end: #2563eb;--course-header-min-height: 100px;--course-header-padding-block: 12px;--course-header-padding-inline: 22px;--course-header-shell-offset: -8px;--course-header-shell-gap: 16px;--course-header-column-gap: 16px;--course-header-action-row-gap: 12px;--course-header-action-gap: 10px;--course-tool-border: #e2e8f0;--course-tool-border-soft: #edf0f5;--course-tool-surface-muted: #f8fafc;--course-tool-text: #334155;--course-tool-muted: #64748b}html,body,#app{margin:0;min-height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe 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16px}.course-message-header-actions[data-v-2f87bcc4]{gap:4px}.course-message-delete-read[data-v-2f87bcc4],.course-message-delete[data-v-2f87bcc4],.course-message-retry[data-v-2f87bcc4],.course-message-close[data-v-2f87bcc4]{min-width:44px;min-height:44px}}@media(min-width:721px)and (max-width:768px){.course-message-drawer[data-v-2f87bcc4]{width:min(520px,calc(100vw - 32px));height:100dvh;max-height:100dvh;min-height:0;border-radius:20px 0 0 20px;padding-bottom:env(safe-area-inset-bottom)}.course-message-header[data-v-2f87bcc4]{padding:16px}.course-message-status[data-v-2f87bcc4],.course-message-list[data-v-2f87bcc4]{padding-inline:16px}.course-message-delete-read[data-v-2f87bcc4],.course-message-delete[data-v-2f87bcc4],.course-message-retry[data-v-2f87bcc4],.course-message-close[data-v-2f87bcc4]{min-width:44px;min-height:44px}}.skin-dialog-title[data-v-d57051b6]{margin:0;color:#1f2937;font-size:18px;font-weight:700}@media(max-width:720px){.skin-dialog.el-dialog{display:flex;width:calc(100vw - 24px)!important;max-height:min(760px,calc(100dvh - 24px));margin:12px auto;flex-direction:column;border-radius:16px;overflow:hidden}.skin-dialog .el-dialog__header{flex:0 0 auto;margin-right:0;padding:16px 16px 10px}.skin-dialog .el-dialog__body{min-height:0;flex:1 1 auto;overflow:hidden;padding:0 16px}.skin-dialog 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.skin-dialog-action{min-width:44px;min-height:44px;margin-left:0}}.student-grade-cell[data-v-23adba26]{display:inline-flex;width:76px;min-width:76px;flex:0 0 76px;box-sizing:border-box;align-items:center;justify-content:flex-end;gap:6px;max-width:100%;white-space:nowrap;line-height:24px;font-size:12px}.student-grade-caption[data-v-23adba26]{color:#94a3b8;font-weight:500}.student-grade-value[data-v-23adba26]{min-width:32px;padding:0 6px;border:1px solid #e2e8f0;border-radius:6px;color:#475569;background:#f8fafc;font-weight:650;text-align:center}.student-grade-cell[data-grade-state=scored] .student-grade-value[data-v-23adba26]{border-color:#dbeafe;color:#2563eb;background:#eff6ff}.student-grade-cell[data-grade-state=student-score-good] .student-grade-value[data-v-23adba26]{border-color:#bbf7d0;color:#15803d;background:#f0fdf4}.student-grade-cell[data-grade-state=student-score-low] .student-grade-value[data-v-23adba26]{border-color:#fecaca;color:#dc2626;background:#fef2f2}.student-grade-cell[data-grade-state=hidden] .student-grade-value[data-v-23adba26]{color:#64748b;background:#f1f5f9}.student-grade-cell[data-grade-state=missing] .student-grade-value[data-v-23adba26],.student-grade-cell[data-grade-state=unread] .student-grade-value[data-v-23adba26],.student-grade-cell[data-grade-state=unlearned] .student-grade-value[data-v-23adba26]{border-color:#fecaca;color:#dc2626;background:#fef2f2}.student-grade-cell[data-grade-state=learning] .student-grade-value[data-v-23adba26],.student-grade-cell[data-grade-state=partial] .student-grade-value[data-v-23adba26]{border-color:#bbf7d0;color:#16a34a;background:#f0fdf4}.student-grade-cell[data-grade-state=pending] .student-grade-value[data-v-23adba26],.student-grade-cell[data-grade-state=read] .student-grade-value[data-v-23adba26],.student-grade-cell[data-grade-state=completed] .student-grade-value[data-v-23adba26]{border-color:#bfdbfe;color:#2563eb;background:#eff6ff}@media(max-width:640px){.student-grade-cell[data-v-23adba26]{width:76px;min-width:76px;flex-basis:76px;gap:4px}.student-grade-value[data-v-23adba26]{padding-inline:4px}}.student-workspace-shell[data-v-c6ce416d]{--student-mobile-card-gap: 8px;display:flex;flex-direction:column;width:100%;height:100vh;height:100dvh;min-height:0;box-sizing:border-box;overflow:hidden;padding:var(--mobile-navigation-height) 12px 0;gap:0}.student-workspace-header[data-v-c6ce416d],.student-workspace-body[data-v-c6ce416d]{min-width:0}.student-mobile-frame-header[data-v-c6ce416d],.student-mobile-frame-body[data-v-c6ce416d]{width:100%;box-sizing:border-box}.student-workspace-header[data-v-c6ce416d]{position:static;min-width:0}.student-workspace-body[data-v-c6ce416d]{display:flex;min-height:0;flex:1 1 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12px}.catalog-board[data-v-c6ce416d]{width:100%;min-width:0;box-sizing:border-box}.content-toolbar[data-v-c6ce416d]{display:flex;min-width:0;min-height:34px;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}.student-mobile-count-row[data-v-c6ce416d]{width:100%;margin-bottom:8px}.student-mobile-module-stack[data-v-c6ce416d]>.page-card.module-panel>.content-toolbar{margin-bottom:8px}.student-mobile-module-stack[data-v-c6ce416d]>.page-card.module-panel>.content-toolbar:has(+.student-mobile-filter-row){margin-bottom:4px}.student-mobile-filter-row.student-type-subtabs[data-v-c6ce416d]{width:100%;margin:0 0 8px;overflow-y:hidden}.student-mobile-filter-row.student-type-subtabs button[data-v-c6ce416d]{min-width:0;flex:1 1 0}.content-count[data-v-c6ce416d]{display:flex;min-width:0;flex-wrap:wrap;align-items:center;gap:8px;color:#334155;font-size:14px}.content-list[data-v-c6ce416d],.student-mobile-content-list[data-v-c6ce416d],.chapter-activity-list[data-v-c6ce416d],.student-mobile-chapter-activity-list[data-v-c6ce416d],.notice-list[data-v-c6ce416d],.attendance-record-list[data-v-c6ce416d]{display:flex;min-width:0;flex-direction:column;gap:var(--student-mobile-card-gap)}.student-type-subtabs[data-v-c6ce416d]{display:flex;min-width:0;gap:4px;margin:4px 0 10px;overflow-x:auto;overflow-y:hidden;border-bottom:1px solid #e2e8f0}.student-type-subtabs button[data-v-c6ce416d]{flex:0 0 auto;min-height:40px;border:0;border-bottom:2px solid transparent;padding:8px 10px;color:#64748b;background:transparent;cursor:pointer;font:inherit;font-size:13px;white-space:nowrap}.student-type-subtabs button.active[data-v-c6ce416d]{border-bottom-color:#2563eb;color:#1d4ed8;font-weight:600}[data-v-c6ce416d] .mobile-record-card{width:100%;max-width:none;min-width:0;box-sizing:border-box}[data-v-c6ce416d] .chapter-activity-list .mobile-record-card--mobile{border-color:#eef2f7}[data-v-c6ce416d] .mobile-record-card__type,[data-v-c6ce416d] .mobile-record-card__content,[data-v-c6ce416d] .mobile-record-card__menu{min-width:0}[data-v-c6ce416d] .student-mobile-row-type{display:grid;min-width:0;justify-items:center;gap:4px;color:#334155;font-size:12px}[data-v-c6ce416d] .student-mobile-row-type>span{display:grid;width:34px;height:34px;place-items:center;border-radius:999px;color:#fff;font-weight:800}[data-v-c6ce416d] .student-mobile-row-type>.type-courseware,[data-v-c6ce416d] .student-mobile-row-type>.type-resource{background:#10c78a}[data-v-c6ce416d] .student-mobile-row-type>.type-online-assignment{background:#2563eb}[data-v-c6ce416d] .student-mobile-row-type>.type-file-assignment{background:#0891b2}[data-v-c6ce416d] .student-mobile-row-type>.type-test{background:#ffd51d}[data-v-c6ce416d] .student-mobile-row-type>.type-exam{background:#ef4444}[data-v-c6ce416d] .student-mobile-row-type>.type-interaction{background:#8b5cf6}[data-v-c6ce416d] .student-mobile-row-type>.type-evaluation{background:#f97316}[data-v-c6ce416d] .student-mobile-row-type>.type-notice{background:#6b5cff}[data-v-c6ce416d] .student-mobile-row-type>.type-attendance,[data-v-c6ce416d] .activity-icon.type-attendance{background:#1677ff}[data-v-c6ce416d] .student-mobile-row-type em,[data-v-c6ce416d] .attendance-record-type em{color:#334155;font-size:12px;font-style:normal;line-height:16px;white-space:nowrap}[data-v-c6ce416d] .mobile-record-card__main,[data-v-c6ce416d] .mobile-record-card__meta,[data-v-c6ce416d] .mobile-record-card__status{min-width:0}[data-v-c6ce416d] .student-mobile-row-main,[data-v-c6ce416d] .student-mobile-row-meta{width:100%;max-width:none;min-width:0;justify-self:stretch}[data-v-c6ce416d] .mobile-record-card__meta,[data-v-c6ce416d] .mobile-record-card__meta p,[data-v-c6ce416d] .catalog-unclassified-meta{color:#64748b;font-size:13px;line-height:18px}[data-v-c6ce416d] .student-record-metadata{display:grid;min-width:0;gap:2px}[data-v-c6ce416d] .student-record-meta-time,[data-v-c6ce416d] .student-record-meta-download{min-width:0;overflow-wrap:anywhere;white-space:normal}[data-v-c6ce416d] .mobile-record-card__status{color:#475569;font-size:13px;line-height:18px}[data-v-c6ce416d] .student-metadata-desktop{display:none}[data-v-c6ce416d] .student-metadata-mobile{display:block}[data-v-c6ce416d] .mobile-record-card__main .mobile-record-card__title,[data-v-c6ce416d] .mobile-record-card__main strong,[data-v-c6ce416d] .mobile-record-card__main h3{display:block;width:100%;max-width:none;min-width:0;margin:0;overflow-wrap:break-word;white-space:normal}[data-v-c6ce416d] .catalog-chapter{width:100%;max-width:none;min-width:0;box-sizing:border-box;overflow:visible;border:1px solid #e2e8f0;border-radius:12px;background:#fff}[data-v-c6ce416d] .catalog-toggle-header{display:flex;min-width:0;min-height:56px;align-items:center;justify-content:space-between;gap:8px;padding:8px 10px}[data-v-c6ce416d] .student-mobile-catalog-node>.catalog-toggle-header{padding-inline-start:calc(10px + var(--student-catalog-heading-indent, 0px))}[data-v-c6ce416d] .catalog-toggle-header-toggle{display:flex;min-width:0;flex:1 1 auto;align-items:center;gap:8px;border:0;padding:0;color:inherit;background:transparent;cursor:pointer;font:inherit;text-align:left}[data-v-c6ce416d] .catalog-toggle-header-toggle>div:first-child{display:flex;min-width:0;flex:1 1 auto;align-items:center;gap:8px}[data-v-c6ce416d] .catalog-toggle-header-toggle strong{min-width:0;overflow-wrap:anywhere}[data-v-c6ce416d] .catalog-toggle-header-toggle em{flex:0 0 auto;color:#64748b;font-size:12px;font-style:normal}[data-v-c6ce416d] .catalog-toggle-header-toggle b{flex:0 0 auto;color:#2563eb;font-size:11px;font-weight:600}[data-v-c6ce416d] .catalog-toggle-header-menu{display:flex;flex:0 0 44px;width:44px;min-width:44px;align-items:center;justify-content:flex-end}[data-v-c6ce416d] .catalog-toggle-header-menu .shared-more-actions,[data-v-c6ce416d] .catalog-toggle-header-menu .shared-more-actions-trigger{width:44px;min-width:44px;min-height:44px}[data-v-c6ce416d] .catalog-toggle-header-menu .shared-more-actions-trigger{height:44px;padding:0;gap:0}[data-v-c6ce416d] .catalog-toggle-header-menu .shared-more-actions-trigger small{display:none}[data-v-c6ce416d] .catalog-section,[data-v-c6ce416d] .student-mobile-catalog-node,[data-v-c6ce416d] .student-catalog-node{min-width:0;max-width:100%;margin-inline:0!important;padding-inline:0;transform:none}[data-v-c6ce416d] .student-mobile-visual-mode .student-mobile-module-stack .catalog-board .student-mobile-catalog-node>.chapter-activity-list{min-width:0;max-width:100%;padding-block:8px;padding-inline:0!important;overflow:visible}[data-v-c6ce416d] .student-mobile-visual-mode .attendance-record-card.mobile-record-card--mobile{display:grid;grid-template-columns:56px minmax(0,1fr) 44px;grid-template-areas:"type content menu";align-items:start;gap:8px;padding:12px;border:1px solid #eef2f7;border-radius:8px;box-shadow:none}[data-v-c6ce416d] .student-mobile-visual-mode .attendance-record-card.mobile-record-card--mobile h3,[data-v-c6ce416d] .student-mobile-visual-mode .attendance-record-card.mobile-record-card--mobile p{overflow:visible;text-overflow:clip;white-space:normal}[data-v-c6ce416d] .catalog-unclassified{display:grid;min-width:0;gap:8px;margin-top:10px}[data-v-c6ce416d] .catalog-unclassified-title{color:#64748b;font-size:13px}[data-v-c6ce416d] .resource-folder-bar{min-width:0;margin:0 0 12px;padding:8px}[data-v-c6ce416d] .resource-directory-tree,[data-v-c6ce416d] .resource-directory-tree-resource-row,[data-v-c6ce416d] .student-mobile-resource-entry{min-width:0}[data-v-c6ce416d] .resource-directory-tree-resource-row 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.catalog-module-panel[data-v-617c9888] .student-catalog-node.catalog-subchapter>.catalog-toggle-header{gap:14px;padding:8px 12px}.student-workspace-shell:not(.student-mobile-visual-mode) .catalog-module-panel[data-v-617c9888] .student-catalog-node.catalog-subchapter strong{font-size:14px}.student-workspace-shell:not(.student-mobile-visual-mode) .catalog-module-panel[data-v-617c9888] .student-catalog-node.catalog-subchapter em{font-size:12px}.catalog-chapter:not(.collapsed) .chapter-activity-list[data-v-617c9888]{padding:0 18px}.student-catalog-node>.chapter-activity-list>.student-catalog-node[data-v-617c9888]{margin-top:var(--student-catalog-level-gap);margin-bottom:10px;margin-left:18px;padding-top:var(--student-catalog-level-gap);border-color:#eef2f7;border-radius:8px}.student-catalog-node>.chapter-activity-list>.student-catalog-node[data-v-617c9888]:last-child{margin-bottom:0}.student-workspace-shell:not(.student-mobile-visual-mode) .catalog-module-panel[data-v-617c9888] 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