:root{color-scheme:light;--color-white: #ffffff;--color-primary: #578e7e;--color-primary-hover: #437063;--color-primary-soft: #eef5f3;--color-secondary: #8fb5a5;--color-background-light: #f5f5f0;--color-surface-light: #fafaf9;--color-surface-muted: #f5f5f4;--color-text-light-primary: #44403c;--color-text-light-secondary: #78716c;--color-text-light-tertiary: #a8a29e;--color-border-light: #e7e5e4;--color-focus-ring: rgba(87, 142, 126, .4);--bg-app: var(--color-background-light);--bg-paper: var(--color-surface-light);--text-primary: var(--color-text-light-primary);--text-secondary: var(--color-text-light-secondary);--text-tertiary: var(--color-text-light-tertiary);--primary-color: var(--color-primary);--primary-hover: var(--color-primary-hover);--primary-light: var(--color-primary-soft);--secondary-color: var(--color-surface-muted);--border-color: var(--color-border-light);--focus-ring: var(--color-focus-ring);--white: var(--color-white)}.sz-page{--bg-app: var(--color-white);--bg-paper: var(--color-white);--sz-card-radius: 28px;--sz-card-bg: var(--color-white);--sz-card-bg-strong: var(--color-white);--sz-card-header-bg: var(--color-white);--sz-card-border: rgba(226, 232, 240, .92);--sz-card-outline: rgba(226, 232, 240, .88);--sz-card-shadow: 0 10px 30px rgba(15, 23, 42, .04), inset 0 1px 0 rgba(255, 255, 255, .82);--primary-hover: var(--color-primary-hover);--primary-light: var(--color-primary-soft);--primary-dark: #437063;--success-color: #4d7c74;--success-bg: #f0fdf4;--danger-color: #be123c;--error-color: #be123c;--error-bg: #fff1f2;--warning-color: #d97706;--background: var(--color-white);--background-secondary: var(--color-white);--mobile-dock-bg: rgba(250, 250, 249, .96);--mobile-dock-border: rgba(231, 229, 228, .85);--mobile-dock-shadow: 0 12px 26px rgba(68, 64, 60, .14);--shadow-sm: 0 1px 2px 0 rgba(68, 64, 60, .05);--shadow-md: 0 4px 6px -1px rgba(68, 64, 60, .08), 0 2px 4px -1px rgba(68, 64, 60, .04);--shadow-lg: 0 10px 15px -3px rgba(68, 64, 60, .08), 0 4px 6px -2px rgba(68, 64, 60, .04);--shadow-xl: 0 20px 25px -5px rgba(68, 64, 60, .1);--radius-sm: 6px;--radius-md: 12px;--radius-lg: 20px;--transition-fast: .15s ease-out;--transition-normal: .2s ease-out;--sz-layout-gutter: 16px;--sz-mobile-side-gutter: 10px;--sz-mobile-side-gutter-xs: 8px;--sz-header-visible-offset: var(--common-header-visible-offset, var(--common-header-offset, 0px));--sz-layout-offset: var(--sz-header-visible-offset);--safe-area-top: env(safe-area-inset-top, 0px);--safe-area-bottom: env(safe-area-inset-bottom, 0px);--safe-area-left: env(safe-area-inset-left, 0px);--safe-area-right: env(safe-area-inset-right, 0px);margin-top:0;padding-top:var(--common-header-offset, 0px);min-height:100vh;background:var(--bg-app);overflow-x:hidden;overflow-x:clip}.mode-toggle-container{position:relative;width:100%;z-index:2147483646;isolation:isolate;pointer-events:auto;transition:none;display:flex;flex-direction:column;align-items:stretch;gap:0;margin-top:16px;margin-bottom:24px}.mode-toggle{pointer-events:auto;position:relative;display:inline-flex;background:var(--bg-app);border-radius:8px;padding:3px}.sz_common_header_bar{pointer-events:auto;display:flex;align-items:center;justify-content:flex-start;gap:20px;background:#fff;border-radius:var(--radius-lg);padding:14px 16px;border:none;width:100%;min-height:0;box-sizing:border-box}.sz_common_header_label{display:inline-flex;align-items:center;gap:4px;padding:0;border:none;background:transparent;cursor:pointer;color:#64748bb3;font-size:1.0625rem;font-weight:500;line-height:1.4;letter-spacing:-.01em;white-space:nowrap}.sz_common_header_label_text{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font:inherit;line-height:inherit;color:inherit}.sz_common_header_label_text.is-selected{color:#000}.sz_common_header_dropdown{position:relative;display:inline-flex;align-items:center}.sz_common_header_actions{margin-left:auto;display:inline-flex;align-items:center;gap:6px;flex:0 0 auto}.sz_common_header_action{display:inline-flex;align-items:center;justify-content:center;gap:5px;padding:7px 14px;border:1px solid rgba(15,23,42,.1);border-radius:20px;background:#fff9;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#334155;font-size:.8125rem;font-weight:500;line-height:1.2;letter-spacing:.01em;white-space:nowrap;cursor:pointer;transition:all .2s ease;min-height:34px;box-sizing:border-box}.sz_common_header_action .material-symbols-outlined{font-size:15px}.sz_common_header_action:hover{background:#0f172a0f;border-color:#0f172a2e;color:#0f172a}.sz_common_header_action:active{transform:scale(.97)}.sz_common_header_action--mode-switch{background:#2563eb;border-color:transparent;color:#fff;font-weight:600;box-shadow:0 1px 3px #2563eb40;text-decoration:none}.sz_common_header_action--mode-switch:hover{background:#1d4ed8;box-shadow:0 2px 8px #2563eb4d;color:#fff}.sz_common_header_dropdown:after{content:"";position:absolute;top:100%;left:0;right:0;height:8px}.sz_common_header_label_icon{color:#000;font-size:1.5em;line-height:1}.sz_common_header_panel{position:absolute;top:calc(100% + 8px);left:0;min-width:220px;padding:8px;border:1px solid rgba(15,23,42,.1);border-radius:12px;background:#f3f4f6;box-shadow:0 18px 36px #0f172a1f;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(6px);transition:opacity .18s ease,transform .18s ease,visibility .18s ease;z-index:2147483647}.sz_common_header_panel_list{display:flex;flex-direction:column;gap:4px;min-width:220px;max-height:min(320px,60vh);overflow-y:auto}.sz_common_header_dropdown[data-open=true] .sz_common_header_panel{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}.sz_common_header_panel_item{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:36px;padding:0 10px;border-radius:10px;color:#111827;font-size:14px;font-weight:500;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sz_common_header_panel_option{width:100%;border:0;background:transparent;cursor:pointer;text-align:left}.sz_common_header_panel_option:hover,.sz_common_header_panel_option:focus-visible{background:#ffffffeb;outline:none}.sz_common_header_panel_label{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis}.sz_common_header_panel_item.is-empty{color:#64748b}.sz_common_header_panel_option--folder.is-active{background:#ffeb3b8c}.sz_common_header_panel_option--file.is-active{background:#fbcfe8b3}.sz-selection-strip{display:block;flex:1 1 auto;min-width:0;width:100%;line-height:1.3;font-size:14.4px;font-weight:500;color:#000;overflow-x:auto;overflow-y:hidden;white-space:nowrap;scrollbar-width:none;-webkit-overflow-scrolling:touch}.sz-selection-strip__content{display:inline-flex;align-items:center;justify-content:flex-start;gap:9px;min-width:100%;width:max-content;white-space:nowrap}.sz-selection-empty{flex:0 0 auto;color:#5f6672}.sz-selection-strip::-webkit-scrollbar{display:none}.sz-selection-btn{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;min-height:24px;padding:0 4px;border:none;border-radius:0;background:transparent;color:#000;font-size:14.4px;font-weight:500;line-height:1.3;cursor:pointer;white-space:nowrap;box-sizing:border-box;transition:background .15s ease}.sz-selection-btn:hover{background:transparent}.sz-selection-action-btn{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;min-height:24px;padding:0 9px;border:1px solid rgba(79,110,247,.24);border-radius:999px;background:#4f6ef714;color:#4f6ef7;font-size:12px;font-weight:600;line-height:1.2;cursor:pointer;white-space:nowrap;transition:background .15s ease,border-color .15s ease,color .15s ease,opacity .15s ease}.sz-selection-action-btn:hover{background:#4f6ef724;border-color:#4f6ef75c}.sz-selection-action-btn:disabled,.sz-selection-action-btn[aria-disabled=true]{opacity:.42;cursor:default}.sz-selection-btn--folder.is-active{background:#ffeb3b8c}.sz-selection-btn--file.is-active{background:#fbcfe8b3}.sz-selection-btn--table.is-active{background:#bbf7d0cc}.table-tab-list{padding:0 2px;box-sizing:border-box}.table-tab-list:empty,.table-tab-list.table-tab-list--empty{visibility:hidden}.table-tab-list.table-tab-list--empty *{pointer-events:none}.mode-toggle{display:flex;align-items:center;gap:4px;background:var(--background);border-radius:10px;padding:4px}.mode-toggle-btn{position:relative;z-index:1;display:flex;align-items:center;gap:6px;padding:8px 16px;border:none;background:transparent;font-size:13px;font-weight:600;color:var(--text-tertiary);cursor:pointer;transition:all .2s ease;border-radius:8px;white-space:nowrap;flex-shrink:0}.mode-toggle-btn:hover:not(.active){color:var(--text-secondary);background:#0000000a}.mode-toggle-btn:focus-visible{outline:2px solid var(--primary-color);outline-offset:2px}.mode-toggle-btn.active{color:#fff;background:var(--primary-color);box-shadow:0 2px 8px #578e7e4d;font-weight:700}.mode-toggle-slider{display:none}.sz-page .ut-btn{padding:10px 20px;border-radius:var(--radius-sm);font-weight:600;font-size:14px;cursor:pointer;transition:all var(--transition-normal);border:none;outline:none;white-space:nowrap;height:40px;display:inline-flex;align-items:center;justify-content:center;gap:6px}.sz-page .ut-btn:focus-visible{outline:2px solid var(--primary-color);outline-offset:2px}.sz-page .ut-btn-primary{background:var(--primary-color);color:#fff}.sz-page .ut-btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.sz-page .ut-btn-primary:active{transform:translateY(0)}.sz-page .ut-btn-secondary{background:var(--background-secondary);color:var(--text-primary);border:1px solid var(--border-color)}.sz-page .ut-btn-secondary:hover{background:var(--secondary-color);border-color:var(--text-tertiary)}@media(max-width:768px){.sz-page{min-height:100dvh}.sz_common_header_bar{gap:8px;padding:12px 10px}.mode-toggle-btn{padding:5px 10px;font-size:13px}}@media(max-width:640px){.mode-toggle-container{width:100%;max-width:none;padding:0;background:transparent;border-bottom:none;box-shadow:none;backdrop-filter:none;height:auto;transition:none;margin-bottom:var(--sz-mobile-side-gutter, 10px)}.sz_common_header_bar{align-items:center;padding:12px 10px;gap:8px;width:100%;box-sizing:border-box;border-radius:var(--radius-lg);box-shadow:none;border:none;overflow:visible}.sz_common_header_dropdown{min-width:0;flex:1 1 0}.sz_common_header_label{min-width:0;width:100%;font-size:12px}.sz_common_header_actions{gap:4px}.sz_common_header_action{gap:3px;padding:4px 10px;border:none;font-size:12px;min-height:30px;backdrop-filter:none;-webkit-backdrop-filter:none;background:#0f172a0d}.sz_common_header_action--mode-switch{background:#2563eb;border-color:transparent;color:#fff}.sz_common_header_action--mode-switch:hover,.sz_common_header_action--mode-switch:active,.sz_common_header_action--mode-switch:focus-visible{background:#1d4ed8;color:#fff}.mode-toggle{flex:0 0 auto;padding:0;border-radius:0;background:transparent;border:none;display:inline-flex;align-items:center;gap:12px}.mode-toggle-btn{flex:0 0 auto;justify-content:center;min-height:auto;padding:0;font-size:13px;font-weight:600;line-height:1;color:#000;background:transparent;border-radius:0}.mode-toggle-btn.active{color:#000;background:transparent;box-shadow:none;border:none;text-decoration:underline;text-underline-offset:.2em;text-decoration-thickness:2px}}@media(max-width:480px){.sz_common_header_bar{border-radius:0;gap:8px}.mode-toggle{padding:0}.mode-toggle-btn{padding:0;font-size:13px;min-height:auto}.mode-toggle-btn svg{width:11px;height:11px}}.toast-container{position:fixed;top:calc(var(--common-header-visible-offset, var(--common-header-offset, 52px)) + 12px);left:50%;transform:translate(-50%);width:min(420px,calc(100vw - 32px));display:flex;justify-content:stretch;align-items:flex-start;pointer-events:none;z-index:2147483646}.toast{display:flex;align-items:center;gap:8px;padding:10px 16px;width:100%;background:#18181beb;color:#fff;border-radius:8px;box-shadow:0 4px 12px #00000026;pointer-events:auto;animation:toastFadeIn .25s ease;border-left:none}.toast.toast-exit{animation:toastFadeOut .2s ease forwards}@keyframes toastFadeIn{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}@keyframes toastFadeOut{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-6px)}}.toast-icon{display:flex;align-items:center;justify-content:center;width:20px;height:20px;flex-shrink:0}.toast-icon svg{width:14px;height:14px}.toast-content{flex:1;min-width:0}.toast-message{font-size:13px;font-weight:500;color:#fff;margin:0;line-height:1.4}.toast-close{background:none;border:none;width:22px;height:22px;border-radius:4px;cursor:pointer;color:#ffffff80;display:flex;align-items:center;justify-content:center;transition:color .15s ease;flex-shrink:0}.toast-close:hover{color:#fff}.toast.toast-success .toast-icon{color:#4ade80}.toast.toast-error .toast-icon{color:#f87171}.toast.toast-warning .toast-icon{color:#fbbf24}.toast.toast-info .toast-icon{color:#60a5fa}@media(max-width:640px){.toast-container{top:calc(var(--common-header-visible-offset, var(--common-header-offset, 52px)) + 8px);width:min(420px,calc(100vw - 20px))}}@media(pointer:coarse){.tree-action-btn{min-width:44px;min-height:44px}.tree-node{min-height:48px}.modal-close,.ftool-btn{min-width:44px;min-height:44px}.mode-toggle-btn:active,.sz_common_header_action:active{transform:scale(.96);opacity:.85;transition:transform .1s ease,opacity .1s ease}}.tree-shared-divider{display:flex;align-items:center;gap:6px;margin:10px 12px 6px;padding-top:8px;border-top:1px solid var(--border-color);color:var(--text-tertiary);font-size:12px;font-weight:600}.tree-shared-dot{width:8px;height:8px;border-radius:50%;background:var(--primary-color);opacity:.8}.tree-shared-label{letter-spacing:-.01em;font-weight:700;color:#000;font-size:13px}.tree-shared-header{display:flex;align-items:center;gap:6px;margin:4px 12px 6px;color:var(--text-tertiary);font-size:12px;font-weight:600}.tree-item{margin-bottom:1px}.tree-node{display:flex;align-items:center;padding:8px 16px;cursor:pointer;transition:all var(--transition-fast);user-select:none;color:var(--text-primary)}.tree-node:hover{background:var(--primary-light)}.tree-node.active{background:var(--primary-light);color:var(--primary-color);font-weight:600}.tree-toggle{width:16px;height:16px;margin-right:6px;border:none;background:none;cursor:pointer;color:var(--text-tertiary);display:flex;align-items:center;justify-content:center;transition:transform var(--transition-fast);font-size:12px}.tree-toggle.expanded{transform:rotate(90deg)}.tree-icon{display:flex;align-items:center;justify-content:center;width:16px;height:16px;margin-right:8px;color:var(--primary-color);flex-shrink:0}.tree-icon svg{width:16px;height:16px}.tree-label{flex:1;font-size:13px;font-weight:500}.tree-actions{display:flex;gap:2px;margin-left:6px;opacity:0;visibility:hidden;transition:opacity var(--transition-fast),visibility var(--transition-fast)}.tree-node:hover .tree-actions{opacity:1;visibility:visible}.tree-action-btn{width:22px;height:22px;border:none;background:none;cursor:pointer;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--text-tertiary);transition:all var(--transition-fast)}.tree-action-btn:hover{background:var(--background)}.tree-rename-btn:hover{color:var(--primary-color)}.tree-action-btn:last-child:hover{color:var(--danger-color)}.tree-children{margin-left:20px;display:none}.tree-children.expanded{display:block}.tree-add-item-btn,.tree-add-folder-btn{display:flex;align-items:center;gap:6px;width:calc(100% - 24px);margin:4px 12px;padding:8px 12px;font-size:12px;font-weight:500;color:var(--text-tertiary);background:transparent;border:1px dashed var(--border-color);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast)}.tree-add-item-btn:hover,.tree-add-folder-btn:hover{color:var(--primary-color);border-color:var(--primary-color);background:var(--primary-light)}.tree-add-item-btn svg,.tree-add-folder-btn svg{flex-shrink:0;opacity:.6}.tree-add-item-btn:hover svg,.tree-add-folder-btn:hover svg{opacity:1}.tree-add-item-btn{margin-left:36px;width:calc(100% - 48px)}.tree-add-folder-btn{margin-top:8px;border-style:dashed}.tree-empty{padding:32px 16px;text-align:center;color:var(--text-tertiary)}.tree-empty svg{margin-bottom:10px;opacity:.3}.tree-empty p{font-size:13px;line-height:1.5}.tree-onboarding{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;text-align:center}.tree-onboarding-icon{position:relative;width:80px;height:80px;margin-bottom:20px;display:flex;align-items:center;justify-content:center}.tree-onboarding-icon:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--primary-color),#2563eb);border-radius:50%;opacity:.1;animation:onboardingPulse 2s ease-in-out infinite}.tree-onboarding-icon svg{position:relative;z-index:1;width:40px;height:40px;color:var(--primary-color);opacity:1}@keyframes onboardingPulse{0%,to{transform:scale(1);opacity:.1}50%{transform:scale(1.1);opacity:.2}}.tree-onboarding-title{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:8px}.tree-onboarding-desc{font-size:13px;color:var(--text-secondary);line-height:1.6;margin-bottom:24px;max-width:200px}.tree-cta-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;font-size:14px;font-weight:600;color:#fff;background:linear-gradient(135deg,var(--primary-color),#ca8a04);border:none;border-radius:12px;cursor:pointer;box-shadow:0 4px 14px #ca8a0459;transition:all .25s ease;position:relative;overflow:hidden}.tree-cta-btn:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent,rgba(255,255,255,.15));opacity:0;transition:opacity .25s ease}.tree-cta-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #ca8a0473}.tree-cta-btn:hover:before{opacity:1}.tree-cta-btn:active{transform:translateY(0);box-shadow:0 2px 8px #ca8a044d}.tree-cta-btn svg{width:18px;height:18px;flex-shrink:0}.tree-onboarding-hint{display:flex;align-items:center;gap:6px;margin-top:16px;font-size:11px;color:var(--text-tertiary)}.tree-onboarding-hint svg{width:14px;height:14px;opacity:.6}.tab-content{display:none;flex-direction:column;flex:0 0 auto;width:100%;max-width:100%;min-width:0;overflow:visible;overflow-x:hidden;overflow-x:clip;min-height:auto}.tab-content.active{display:flex}.table-wrapper{--sz-table-wrapper-gap: 28px;flex:0 0 auto;width:100%;max-width:100%;min-width:0;overflow-x:hidden;overflow-x:clip;overflow-y:visible;min-height:auto;padding:0;background:transparent;position:relative;z-index:1;border:none;border-radius:0;display:flex;flex-direction:column;gap:var(--sz-table-wrapper-gap)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:max(320px,calc(100vh - var(--sz-layout-offset, 0px) - 110px));padding:40px 24px;border:1px solid var(--sz-card-border);border-radius:var(--sz-card-radius);background:var(--sz-card-bg);box-shadow:var(--sz-card-shadow);color:var(--text-tertiary);text-align:center}.empty-state svg{margin-bottom:12px;opacity:.4}.empty-state p{font-size:14px}.table-skeleton{background:var(--sz-card-bg-strong);border-radius:0 0 var(--sz-card-radius) var(--sz-card-radius);border:1px solid var(--sz-card-outline);border-top:none;overflow:hidden}.skeleton-header{display:flex;background:#f8fafceb;border-bottom:1px solid var(--sz-card-outline)}.skeleton-header .skeleton-cell{height:42px}.skeleton-row{display:flex;border-bottom:1px solid var(--border-color)}.skeleton-row:last-child{border-bottom:none}.skeleton-cell{flex:1;height:48px;background:linear-gradient(90deg,#ffffffbd,#f1f5f9f5,#ffffffbd);background-size:200% 100%;border-right:1px solid var(--sz-card-outline)}.skeleton-cell:last-child{border-right:none}.sz-empty-table-shell__message{margin:18px 18px 22px;color:var(--text-secondary);font-size:14px;line-height:1.5;text-align:center}.skeleton-animate{animation:skeletonShimmer 1.5s ease-in-out infinite}@keyframes skeletonShimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.table-section{padding:0;border:none;border-radius:var(--sz-card-radius);background:var(--sz-card-header-bg);box-shadow:var(--sz-card-shadow);margin-bottom:0;width:100%;max-width:100%;box-sizing:border-box;overflow:visible;overflow-x:hidden;overflow-x:clip}.table-section:last-of-type{margin-bottom:0}.table-section>.editable-table,.table-section>.solve-table{width:100%;max-width:100%;box-sizing:border-box;border:none;border-radius:0 0 var(--sz-card-radius) var(--sz-card-radius);overflow:hidden}.solve-table img{display:block;max-width:100%;height:auto}body[data-sz-page-mode=edit] #editTab{display:flex}body[data-sz-page-mode=edit] #solveTab,body[data-sz-page-mode=quiz] #editTab{display:none}body[data-sz-page-mode=quiz] #solveTab{display:flex}body[data-sz-page-mode=edit] .table-section,body[data-sz-page-mode=quiz] .table-section{border:1px solid var(--border-color);padding:0;box-shadow:none;border-radius:0}body[data-sz-page-mode=edit] .table-section>.editable-table,body[data-sz-page-mode=quiz] .table-section>.editable-table,body[data-sz-page-mode=edit] .table-section>.solve-table,body[data-sz-page-mode=quiz] .table-section>.solve-table,body[data-sz-page-mode=edit] .editable-table,body[data-sz-page-mode=quiz] .editable-table,body[data-sz-page-mode=edit] .solve-table,body[data-sz-page-mode=quiz] .solve-table{border-radius:0}body[data-sz-page-mode=edit] .table-section,body[data-sz-page-mode=quiz] .table-section{border-radius:0}body[data-sz-page-mode=edit] .table-section>.toc-text,body[data-sz-page-mode=quiz] .table-section>.toc-text{border-radius:0}.loading-state{padding:22px 24px;margin-top:16px;border:1px dashed rgba(148,163,184,.4);border-radius:20px;background:var(--sz-card-header-bg);color:var(--text-secondary);font-size:14px;text-align:center}.modal{display:none;position:fixed;inset:0;background:#44403c66;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);z-index:2147483648;align-items:center;justify-content:center}.modal.active{display:flex}.modal-content{background:var(--background);border-radius:var(--radius-lg);width:90%;max-width:420px;box-shadow:var(--shadow-lg);animation:modalSlideIn .25s ease-out;border:1px solid var(--border-color)}.modal-content.modal-sm{max-width:360px;min-width:50vw}@keyframes modalSlideIn{0%{transform:translateY(-20px) scale(.98);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}.modal-header{padding:16px 20px;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.modal-header h3{margin:0;font-size:16px;font-weight:600;color:var(--text-primary)}.modal-close{width:32px;height:32px;border:none;background:none;font-size:28px;cursor:pointer;color:var(--text-tertiary);line-height:1;transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm)}.modal-close:hover{color:var(--danger-color);background:var(--error-bg)}.modal-body{padding:20px}.form-group{margin-bottom:16px}.form-group:last-child{margin-bottom:0}.form-group label{display:block;margin-bottom:6px;font-weight:600;font-size:13px;color:var(--text-primary)}.form-control{width:100%;padding:10px 12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:14px;outline:none;transition:all var(--transition-fast);color:var(--text-primary);background:var(--background)}.form-control:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px var(--focus-ring)}.modal-footer{padding:14px 20px;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:8px}.modal-content.modal-pdf{max-width:860px;width:95%;margin-top:60px;align-self:flex-start;max-height:calc(100vh - 120px);display:flex;flex-direction:column}.modal-content.modal-sz-settings{position:relative;max-width:480px;width:90%;height:auto;max-height:70vh;margin:0;overflow:hidden;display:flex;flex-direction:column}.sz-settings-modal-body{display:flex;flex:1;min-height:0;overflow-y:auto;flex-direction:column;gap:28px}.sz-settings-guide{position:relative;padding-left:16px}.sz-settings-guide:before{content:"";position:absolute;top:2px;bottom:2px;left:0;width:4px;border-radius:999px;background:#578e7e}.sz-settings-guide__list{margin:0;padding-left:18px;color:#1e293b;font-size:15px;font-weight:700;letter-spacing:-.01em;line-height:1.6}.sz-settings-guide__list li{margin:0}.sz-settings-section{display:flex;flex-direction:column;gap:12px}.sz-settings-section__title{margin:0;font-size:15px;font-weight:700;color:var(--text-primary)}.sz-settings-chip-row{display:flex;align-items:flex-start;align-content:flex-start;flex-wrap:wrap;width:100%;gap:10px;overflow:visible;padding-bottom:2px;min-height:90px}.sz-settings-chip{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 16px;border:1px solid rgba(15,23,42,.12);border-radius:999px;background:#fff;color:var(--text-primary);font-size:14px;font-weight:600;line-height:1.3;white-space:nowrap;flex:0 0 auto}button.sz-settings-chip{position:relative;cursor:pointer;transition:border-color .18s ease,background .18s ease,color .18s ease}button.sz-settings-chip:not(.sz-settings-chip--add):hover{border-color:#0f172a38;background:#0f172a0a}.sz-settings-chip.is-active{border-color:#578e7e85;background:#578e7e1a;color:#27463d}.sz-settings-chip--add{border-color:#2563eb;background:#2563eb;color:#fff}.sz-settings-chip[draggable=true]{cursor:grab;user-select:none}.sz-settings-chip.is-dragging{opacity:.45;cursor:grabbing}.sz-settings-chip.is-drop-target-before{box-shadow:inset 3px 0 #578e7ef2}.sz-settings-chip.is-drop-target-after{box-shadow:inset -3px 0 #578e7ef2}.sz-settings-empty{display:inline-flex;align-items:center;min-height:40px;padding:0 2px;color:var(--text-secondary);font-size:14px;white-space:nowrap}.pdf-modal-layout{display:flex;min-height:400px;flex:1;min-height:0}.pdf-modal-left{flex:1;padding:20px;border-right:1px solid var(--border-color);display:flex;flex-direction:column;gap:16px}.pdf-modal-right{flex:1;display:flex;flex-direction:column;background:var(--background-secondary);min-height:0}.pdf-range-section{flex:1;display:flex;flex-direction:column;gap:12px}.pdf-select-inline{display:flex;gap:10px}.pdf-dropdown-wrap{flex:1}.pdf-dropdown-wrap select{width:100%}.pdf-table-actions{display:flex;justify-content:flex-start}.pdf-select-all{display:inline-flex;align-items:center;gap:8px;padding:0 12px;font-size:13px;color:var(--text-primary);cursor:pointer}.pdf-select-all input[type=checkbox]{width:16px;height:16px;accent-color:var(--primary-color)}.pdf-table-list{display:flex;flex-direction:column;gap:8px;padding-right:4px;overflow:auto;flex:1}.pdf-table-item{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:var(--background);font-size:13px;color:var(--text-primary)}.pdf-table-item input[type=checkbox]{width:16px;height:16px;accent-color:var(--primary-color)}.pdf-table-empty{padding:14px 12px;border:1px dashed var(--border-color);border-radius:var(--radius-sm);color:var(--text-tertiary);font-size:12px;text-align:center}.pdf-preview-header{padding:12px 16px;font-size:13px;font-weight:600;color:var(--text-secondary);border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.pdf-preview-orient{display:flex;gap:4px}.pdf-preview-orient-btn{height:28px;padding:0 10px;border:1px solid var(--border-color);background:var(--background);border-radius:var(--radius-sm);font-size:12px;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;justify-content:center}.pdf-preview-orient-btn:hover{border-color:var(--primary-color)}.pdf-preview-orient-btn.active{border-color:var(--primary-color);background:#578e7e1f;color:var(--primary-color);font-weight:600}.pdf-preview-area{flex:1;padding:16px;overflow:auto;min-height:0;position:relative;display:flex;flex-direction:column;--pdf-preview-page-height: clamp(260px, 52vh, 360px)}.pdf-preview-zoom-btn{position:sticky;top:10px;margin-left:auto;margin-right:6px;margin-bottom:-32px;border:1px solid var(--border-color);background:var(--background);border-radius:999px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:14px;transition:all .15s ease;z-index:2}.pdf-preview-zoom-btn:hover{border-color:var(--primary-color)}.pdf-preview-zoom-btn.active{border-color:var(--primary-color);background:#578e7e1f;color:var(--primary-color)}.pdf-preview-area.is-zoomed .pdf-preview-content{transform:scale(1.15);transform-origin:top left}.pdf-preview-placeholder{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--text-tertiary);font-size:12px;text-align:center}.pdf-preview-icon{font-size:32px;opacity:.5}.pdf-preview-content{display:flex;flex-direction:column;gap:12px;font-size:11px;line-height:1.5;flex:1;align-items:flex-start}.pdf-preview-page{background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:12px;box-shadow:0 2px 6px #0000000a;display:flex;flex-direction:column;overflow:visible;min-height:var(--pdf-preview-page-height);height:auto}.pdf-preview-page.is-portrait{width:calc(var(--pdf-preview-page-height) * 210 / 297)}.pdf-preview-page.is-landscape{width:calc(var(--pdf-preview-page-height) * 297 / 210)}.pdf-preview-table-title{font-size:12px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.pdf-preview-page-body{flex:1;overflow:visible}.pdf-preview-content table{width:100%;border-collapse:collapse;font-size:10px;table-layout:fixed}.pdf-preview-content th,.pdf-preview-content td{border:1px solid var(--border-color);padding:4px 6px;text-align:left;vertical-align:top;word-break:break-word;overflow-wrap:anywhere}.pdf-preview-content th{background:var(--background);font-weight:600}.pdf-preview-content img{display:inline-block;max-width:100%;height:auto;object-fit:contain;vertical-align:middle}@media(max-width:640px){.modal-content.modal-sz-settings{width:92%;max-width:480px;height:auto;max-height:70vh;margin:0;border-radius:20px;position:static;left:auto;right:auto;bottom:auto;padding-bottom:0}.modal-content.modal-pdf{max-width:100%;width:100%;height:100%;max-height:100%;border-radius:0}.pdf-modal-layout{flex-direction:column;min-height:auto}.pdf-modal-left{border-right:none;border-bottom:1px solid var(--border-color)}.pdf-modal-right{width:100%;min-height:200px}}.sz-page ::-webkit-scrollbar{width:6px;height:6px}.sz-page ::-webkit-scrollbar-track{background:transparent}.sz-page ::-webkit-scrollbar-thumb{background:#d6d3d1;border-radius:10px}.sz-page ::-webkit-scrollbar-thumb:hover{background:#a8a29e}@media(max-width:768px){.modal-content{width:95%;max-width:none;margin:16px}}@media(max-width:640px){.tree-node{padding:10px 12px}.tree-label{font-size:13px}.empty-state{padding:32px 16px}.empty-state svg{width:48px;height:48px;margin-bottom:16px}.empty-state p{font-size:13px;line-height:1.5;color:var(--text-secondary)}.modal-content{width:100%;margin:0;border-radius:16px 16px 0 0;max-height:90vh;position:fixed;bottom:0;left:0;right:0;animation:modalSlideUp .3s ease-out;padding-bottom:var(--safe-area-bottom, 0)}.modal-content.modal-sz-settings{width:92%;max-width:480px;height:auto;max-height:70vh;margin:0;border-radius:20px;position:static;left:auto;right:auto;bottom:auto;padding-bottom:0;animation:modalSlideIn .25s ease-out}.modal-header{padding:14px 16px}.modal-body{padding:16px;max-height:50vh;overflow-y:auto}.modal-content.modal-sz-settings .modal-body{max-height:none}.modal-footer{padding:12px 16px}.modal-footer .ut-btn{flex:1}.table-wrapper{position:relative;overflow-x:clip;overflow-y:visible;-webkit-overflow-scrolling:touch}.editable-table,.solve-table{min-width:0;width:100%;table-layout:fixed}}@keyframes modalSlideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}@media(max-width:480px){.tree-node{padding:8px 10px;min-height:44px}.tree-icon{width:14px;height:14px}.tree-onboarding{padding:24px 16px}.tree-onboarding-title{font-size:14px}.tree-onboarding-desc{font-size:12px}.tree-cta-btn{padding:10px 20px;font-size:13px;min-height:44px}}@media(max-height:500px)and (max-width:900px){.modal-content{max-height:95vh}.modal-body{max-height:40vh}}@media(pointer:coarse){.tree-node:active{background:var(--primary-light);transform:scale(.98)}.tree-action-btn:active,.tree-cta-btn:active{transform:scale(.92);opacity:.8}.ut-btn:active{transform:scale(.96)}}body.shared-readonly #editTab .table-wrapper{pointer-events:auto}body.shared-readonly #editTab .table-wrapper *{pointer-events:none}.table-add-footer{display:block;padding:0;margin-top:4px;margin-bottom:0;background:transparent}.table-add-footer.is-readonly,.table-add-footer.is-creating{cursor:default}.table-add-footer__button{display:inline-flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:64px;padding:0 20px;border:1.5px dashed rgba(148,163,184,.42);border-radius:24px;background:var(--sz-card-header-bg);color:#475569;font-size:15px;font-weight:600;letter-spacing:-.01em;transition:background-color .2s ease,border-color .2s ease,color .2s ease,opacity .2s ease,transform .2s ease;cursor:pointer;box-shadow:var(--sz-card-shadow)}.table-add-footer__button:before{content:"+";font-size:20px;line-height:1;color:#4f46e5}.table-add-footer:hover:not(.is-readonly):not(.is-creating) .table-add-footer__button{background:var(--sz-card-header-bg);border-color:#6366f161;color:#4338ca;transform:translateY(-1px)}.table-add-footer__button:focus-visible{outline:none;background:var(--sz-card-header-bg);border-color:#6366f170;box-shadow:0 0 0 4px #6366f124,var(--sz-card-shadow)}.table-add-footer__button:active:not(:disabled){transform:translateY(0);background:var(--sz-card-header-bg)}.table-add-footer.is-creating .table-add-footer__button{cursor:default;background:var(--sz-card-header-bg);opacity:.7}.table-add-footer.is-readonly .table-add-footer__button,.table-add-footer__button:disabled{background:var(--sz-card-header-bg);color:#94a3b8;opacity:.4;cursor:not-allowed}body.shared-readonly #editTab .table-wrapper .table-add-footer,body.shared-readonly #editTab .table-wrapper .table-add-footer *{pointer-events:auto}body.shared-readonly #editTab .table-wrapper .table-add-footer__button:disabled{pointer-events:none}.editable-table{width:100%;max-width:100%;box-sizing:border-box;border-collapse:collapse;table-layout:fixed;background:transparent;box-shadow:none;border-radius:0 0 var(--sz-card-radius) var(--sz-card-radius);overflow:hidden;border:none}.editable-table th{background:var(--sz-card-header-bg);padding:8px 18px;text-align:left;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#4f46e5a6;border-top:1px solid var(--sz-card-outline);border-bottom:1px solid var(--sz-card-outline)}.th-answer{position:relative}.editable-table td{padding:0;border:1px solid var(--sz-card-outline);background:var(--sz-card-header-bg);position:relative;z-index:1;vertical-align:top;height:1px;overflow:visible}.editable-table tr>:first-child{border-left:none}.editable-table tr>:last-child{border-right:none}.editable-table tbody tr:last-child>td{border-bottom:none}.cell-content{--sz-cell-toolbar-height: 40px;--sz-cell-toolbar-top-offset: 8px;min-height:38px;height:100%;padding:calc(var(--sz-cell-toolbar-height) + var(--sz-cell-toolbar-top-offset) + 14px) 16px 14px;outline:none;cursor:text;font-size:14px;line-height:1.6;word-wrap:break-word;word-break:break-word;overflow-wrap:break-word;white-space:pre-wrap;max-width:100%;transition:background-color .18s ease,box-shadow .18s ease,border-color .18s ease;border:2px solid transparent;color:var(--text-primary);display:block;width:100%;box-sizing:border-box}.cell-content img{max-width:100%;height:auto;display:inline-block}.cell-img-wrap{display:block;width:100%;max-width:100%;vertical-align:top}.cell-img-wrap img{display:block;width:100%;max-width:100%;height:auto}.cell-img-wrap--uploading{display:flex;align-items:center;justify-content:center;min-height:120px;border:1px dashed rgba(148,163,184,.5);border-radius:12px;background:linear-gradient(135deg,#f8fafcf5,#f1f5f9eb)}.cell-img-uploading{display:inline-flex;align-items:center;gap:10px;color:var(--text-secondary, #64748b);font-size:13px;font-weight:600;letter-spacing:-.01em}.cell-img-uploading__spinner{width:16px;height:16px;border:2px solid rgba(148,163,184,.28);border-top-color:#2563eb;border-radius:999px;animation:cell-img-upload-spin .8s linear infinite}.cell-img-uploading__text{animation:cell-img-upload-pulse 1.2s ease-in-out infinite}.cell-img-header{display:flex;align-items:center;justify-content:flex-end;gap:2px;padding:2px 0;background:transparent;border-radius:4px 4px 0 0}.cell-img-btn{display:inline-flex;align-items:center;justify-content:center;flex:0 0 22px;width:22px;height:22px;border:none;background:transparent;cursor:pointer;font-size:13px;line-height:1;color:var(--text-secondary, #666);border-radius:3px;padding:0}.cell-img-btn:hover{background:var(--bg-tertiary, #e0e0e0);color:var(--text-primary, #333)}@keyframes cell-img-upload-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes cell-img-upload-pulse{0%,to{opacity:.55}50%{opacity:1}}.cell-content u,.cell-content span[style*=text-decoration]{line-height:inherit;vertical-align:baseline;text-decoration-thickness:1px;text-underline-offset:.12em;text-decoration-skip-ink:auto}.cell-content:hover{background:var(--sz-card-header-bg)}.cell-content:focus{background:#ffffffe6;border-color:transparent;border-radius:6px;box-shadow:inset 0 0 0 2px #6366f14d}.cell-content.focused{background:#ffffffe6;border-color:transparent;border-radius:6px;box-shadow:inset 0 0 0 2px #6366f14d}.cell-content:empty:before{content:attr(data-placeholder);color:var(--text-tertiary)}.question-cell{position:relative;overflow:visible;border-right:none!important}.answer-cell{position:relative;overflow:visible;border-left:none!important}.swap-header-cell,.swap-cell{width:30px;min-width:30px;max-width:30px;padding:0!important;text-align:center;vertical-align:middle;border-left:none!important;border-right:none!important}.editable-table td.swap-cell{background:var(--secondary-color)}.swap-cell-actions{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;height:100%;padding:6px 0}.swap-header-cell{position:relative}.swap-header-cell:after{content:"";position:absolute;top:0;bottom:0;left:50%;width:1px;background:var(--sz-card-outline)}.row-swap-btn{display:flex;align-items:center;justify-content:center;width:24px;height:24px;margin:0 auto;padding:0;font-size:13px;font-weight:700;line-height:1;color:#6366f1;background:transparent;border:none;border-radius:4px;cursor:pointer;transition:color var(--transition-fast)}.row-swap-btn:hover{color:#4338ca}.editable-table tbody tr{position:relative;transition:background-color .18s ease}.editable-table tbody tr:hover{z-index:2}.editable-table tbody tr:hover td{background:var(--sz-card-header-bg)}.editable-table tbody tr:hover td.swap-cell{background:var(--secondary-color)}.row-insert-row td{padding:0!important;border:none!important;height:0;line-height:0}.row-insert-content{display:flex;align-items:center;justify-content:center;height:20px;padding:0 8px;gap:0;background:var(--secondary-color);cursor:pointer}.row-insert-btn,.row-order-btn{display:flex;align-items:center;justify-content:center;width:22px;height:22px;padding:0;background:transparent;border:none;border-radius:50%;cursor:pointer;color:var(--text-primary);transition:color var(--transition-fast),opacity var(--transition-fast)}.row-insert-btn.row-insert-btn--text{width:auto;min-width:22px;justify-content:center;gap:4px;padding:0 10px;border-radius:999px;text-align:center}.row-insert-btn .material-symbols-outlined,.row-order-btn .material-symbols-outlined{font-size:16px;font-variation-settings:"FILL" 1,"wght" 600,"GRAD" 0,"opsz" 20}.row-insert-btn__label{display:inline-flex;align-items:center;position:relative;z-index:1;font-size:11px;font-weight:700;line-height:1;white-space:nowrap}.row-delete-btn{display:flex;align-items:center;justify-content:center;width:24px;height:24px;margin:0 auto;padding:0;color:#ef4444;background:transparent;border:none;border-radius:4px;cursor:pointer;transition:color var(--transition-fast)}.row-delete-btn .material-symbols-outlined{font-size:16px}.floating-toolbar{position:absolute;display:flex;align-items:center;gap:4px;flex-wrap:nowrap;padding:6px 10px;background:transparent;border:none;border-radius:0;box-shadow:none;color:var(--text-primary);z-index:1000;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .15s ease}.floating-toolbar.visible{visibility:visible;pointer-events:auto;opacity:1}.floating-toolbar-arrow{display:none}.ftool-btn{width:28px;height:28px;border:none;background:transparent;border-radius:4px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-primary);font-size:13px;transition:background .15s ease}.ftool-btn:hover{background:#0f172a14}.ftool-btn--wide{width:auto;padding:0 10px;white-space:nowrap}.ftool-divider{width:1px;height:20px;background:#0f172a24;margin:0 4px}.ftool-color-label{position:relative;display:flex;align-items:center;justify-content:center;width:28px;height:28px;cursor:pointer;border-radius:4px;transition:background .15s ease}.ftool-color-label:hover{background:#0f172a14}.ftool-color-icon{font-size:14px;font-weight:700;color:red;text-shadow:none}.ftool-color-input{position:absolute;width:100%;height:100%;opacity:0;cursor:pointer}.ftool-size{min-width:20px;text-align:center;font-size:11px;font-weight:600;color:var(--text-primary);user-select:none}.ftool-spinner{display:flex;align-items:center;gap:2px;background:transparent;border-radius:4px;padding:2px 4px}.ftool-spinner-btns{display:flex;flex-direction:column;gap:0}.ftool-spinner-btn{display:flex;align-items:center;justify-content:center;width:14px;height:10px;padding:0;margin:0;background:transparent;border:none;color:var(--text-primary);font-size:6px;line-height:1;cursor:pointer;opacity:.7;transition:opacity .1s}.ftool-spinner-btn:hover{opacity:1}@media(max-width:1024px){.cell-content{padding:8px 12px;font-size:12px}}@media(max-width:768px){.cell-content{min-height:44px;padding:10px 12px;font-size:14px}}@media(max-width:640px){.editable-table th{padding:8px 10px;font-size:12px;background:var(--sz-card-header-bg);box-shadow:inset 0 -1px 0 var(--sz-card-outline)}.cell-content{min-height:48px;padding:12px 10px;font-size:14px;line-height:1.4;word-break:break-word;overflow-wrap:break-word}.row-swap-btn,.row-delete-btn{width:22px;height:22px}#editTab .table-wrapper{padding-bottom:calc(140px + var(--safe-area-bottom, 0px));scroll-padding-bottom:calc(140px + var(--safe-area-bottom, 0px))}.cell-content:focus{scroll-margin-bottom:200px}.floating-toolbar{position:fixed!important;bottom:calc(16px + var(--safe-area-bottom, 0px))!important;top:auto!important;left:12px!important;right:12px!important;width:auto!important;justify-content:space-around;padding:12px 16px;border-radius:16px;box-shadow:none}.floating-toolbar-arrow{display:none}.ftool-btn{width:36px;height:36px;font-size:15px;min-width:44px;min-height:44px}.ftool-btn--wide{width:auto;min-width:auto;padding:0 12px;white-space:nowrap}.ftool-btn:active{transform:scale(.9);background:#0f172a1f}.ftool-size{font-size:13px;min-width:24px}.ftool-color-label{min-width:44px;min-height:44px}}@media(max-width:480px){.cell-content{padding:10px 8px;font-size:13px;min-height:44px}}.show-answer-tooltip:after,.reset-answer-tooltip:after{content:"";position:absolute;bottom:-6px;right:12px;width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-top:6px solid currentColor}.score-display{padding:18px 20px;margin-bottom:24px;border:1px solid var(--sz-card-border);border-radius:24px;background:var(--sz-card-bg);box-shadow:var(--sz-card-shadow)}.score-card{text-align:center}.score-label{font-size:12px;color:var(--text-secondary);margin-bottom:4px;font-weight:500}.score-value{font-size:32px;font-weight:700;margin-bottom:2px;color:var(--primary-color)}.score-detail{font-size:13px;color:var(--text-secondary)}.solve-table{width:100%;max-width:100%;box-sizing:border-box;border-collapse:collapse;table-layout:fixed;background:transparent;box-shadow:none;border-radius:0 0 var(--sz-card-radius) var(--sz-card-radius);overflow:hidden;border:none}.solve-table th{background:var(--sz-card-header-bg);padding:8px 18px;text-align:left;font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#4f46e5a6;border-top:1px solid var(--sz-card-outline);border-bottom:1px solid var(--sz-card-outline)}.solve-table td{padding:0;border:1px solid var(--sz-card-outline);background:var(--sz-card-header-bg);vertical-align:top;word-wrap:break-word;word-break:break-word;overflow-wrap:break-word;white-space:pre-wrap;font-size:13px;line-height:1.5;color:var(--text-primary)}.solve-table tr>:first-child{border-left:none}.solve-table tr>:last-child{border-right:none}.solve-table tbody tr:last-child>td{border-bottom:none}.solve-table tbody tr{transition:background-color .18s ease}.solve-table tbody tr:hover td{background:var(--sz-card-header-bg)}.solve-table td:first-child{padding:14px 16px}.solve-input{width:100%;padding:14px 16px;border:none;border-radius:0;font-size:14px;outline:none;transition:background-color .18s ease,box-shadow .18s ease;resize:none;overflow:hidden;min-height:40px;line-height:1.5;font-family:inherit;display:block;box-sizing:border-box;color:var(--text-primary);background:transparent}.solve-correct-answer-view{width:100%;padding:14px 16px;border-top:1px solid var(--sz-card-outline);border-radius:0;font-size:14px;min-height:40px;line-height:1.5;font-family:inherit;display:block;box-sizing:border-box;color:#dc2626;background:var(--sz-card-header-bg);white-space:pre-wrap;word-break:break-word;overflow-wrap:break-word}.solve-correct-answer-view[hidden]{display:none}.solve-correct-answer-segment-match{color:#16a34a}.solve-correct-answer-segment-diff{color:#dc2626}.solve-input:focus{background:#ffffffe6;box-shadow:inset 0 0 0 2px #6366f14d}.solve-answer-wrapper{position:relative}.solve-answer-actions{position:absolute;top:-38px;right:8px;display:flex;align-items:center;gap:8px;z-index:100}.show-answer-tooltip,.reset-answer-tooltip{position:relative;display:flex;align-items:center;gap:4px;padding:6px 12px;background:linear-gradient(135deg,#1e293b,#334155);color:#fff;font-size:12px;font-weight:600;border-radius:8px;box-shadow:0 4px 12px #0003;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(4px);transition:all .2s ease;border:none;white-space:nowrap}.show-answer-tooltip:after,.reset-answer-tooltip:after{border-top-color:#334155;right:16px}.show-answer-tooltip:hover,.reset-answer-tooltip:hover{background:linear-gradient(135deg,#334155,#475569);transform:translateY(-2px);box-shadow:0 6px 16px #00000040}.solve-answer-wrapper:focus-within .show-answer-tooltip,.solve-answer-wrapper:focus-within .reset-answer-tooltip{opacity:1;visibility:visible;transform:translateY(0)}.show-answer-tooltip svg,.reset-answer-tooltip svg{width:14px;height:14px;flex-shrink:0}.show-answer-tooltip.active{background:linear-gradient(135deg,#16a34a,#22c55e)}.show-answer-tooltip.active:after{border-top-color:#22c55e}.similarity-indicator{display:flex;align-items:center;gap:8px;padding:6px 14px;opacity:0;transform:translateY(-4px);transition:opacity .2s ease,transform .2s ease}.similarity-indicator.visible{opacity:1;transform:translateY(0)}.similarity-bar{flex:1;height:6px;background:var(--border-color);border-radius:3px;overflow:hidden}.similarity-fill{height:100%;width:0%;border-radius:3px;transition:width .3s ease,background .3s ease}.similarity-fill.low{background:#ef4444}.similarity-fill.medium{background:#f59e0b}.similarity-fill.high{background:#22c55e}.similarity-percent{font-size:12px;font-weight:700;min-width:40px;text-align:right;transition:color .3s ease}.similarity-percent.low{color:#ef4444}.similarity-percent.medium{color:#f59e0b}.similarity-percent.high{color:#22c55e}@media(max-width:640px){.solve-table th{padding:10px 12px;font-size:12px;background:var(--sz-card-header-bg);box-shadow:inset 0 -1px 0 var(--sz-card-outline)}.solve-input,.solve-correct-answer-view{word-break:break-word;overflow-wrap:break-word}.score-display{padding:14px 16px}.score-value{font-size:28px}.solve-input:focus{scroll-margin-bottom:200px}}:where(.quiz-rail-ad--left,.quiz-rail-ad--right,.community-shell-page .community-ad-rail__inner,.community-shell-page .community-rail-ad--left,.community-shell-page .community-rail-ad--right,body.study-groups-main-page .study-groups-main-rail-ad,body.study-groups-main-page .study-groups-main-rail-ad--left,body.study-groups-main-page .study-groups-main-rail-ad--right,body.study-groups-group-page .study-groups-group-rail-ad,.planner-side-ad-slot,.intro-ad-rail__inner,.home-ad-rail__inner){display:flex;align-items:center;justify-content:center}:where(.quiz-rail-ad>ins.adsbygoogle,.community-shell-page .community-rail-ad>ins.adsbygoogle,body.study-groups-main-page .study-groups-main-rail-ad>ins.adsbygoogle,body.study-groups-group-page .study-groups-group-rail-ad>ins.adsbygoogle,.planner-side-ad-slot>ins.adsbygoogle,.intro-ad-rail ins.adsbygoogle,.home-ad-rail ins.adsbygoogle){display:flex!important;align-items:center;justify-content:center;margin:0 auto!important;overflow:hidden}:where(.quiz-rail-ad>ins.adsbygoogle>iframe,.community-shell-page .community-rail-ad>ins.adsbygoogle>iframe,body.study-groups-main-page .study-groups-main-rail-ad>ins.adsbygoogle>iframe,body.study-groups-group-page .study-groups-group-rail-ad>ins.adsbygoogle>iframe,.planner-side-ad-slot>ins.adsbygoogle>iframe,.intro-ad-rail ins.adsbygoogle iframe,.home-ad-rail ins.adsbygoogle iframe){margin:auto!important}.sz-page{--sz-quiz-max-width: 100%;--sz-quiz-side-padding: 0px;--sz-quiz-primary-color: var(--primary-color);--sz-quiz-header-offset: var(--sz-layout-offset, var(--common-header-offset, 52px));--sz-quiz-top-ad-height: 90px;--sz-quiz-top-ad-slot-width: 100%;--sz-quiz-viewport-height: 100vh;--sz-quiz-right-rail-outline-height: 500px;--sz-quiz-right-rail-divider-height: 1px;--sz-quiz-right-rail-track-height: max(0px, calc(var(--sz-quiz-viewport-height) - var(--sz-quiz-header-offset)));--sz-quiz-right-rail-height: var(--sz-quiz-right-rail-track-height);--sz-quiz-right-rail-ad-height: max(0px, calc(var(--sz-quiz-right-rail-track-height) - var(--sz-quiz-right-rail-outline-height) - var(--sz-quiz-right-rail-divider-height)))}@supports (height: 100dvh){.sz-page{--sz-quiz-viewport-height: 100dvh}}@media(min-width:768px){.sz-page{--sz-quiz-side-padding: .5rem;--sz-quiz-top-ad-slot-width: 100%}}@media(min-width:1024px){.sz-page{--sz-quiz-max-width: min(92%, 900px)}}@media(min-width:1440px){.sz-page{--sz-quiz-max-width: 1000px}}.table-main{background:var(--bg-app);min-height:100vh;width:100%;max-width:100%;min-width:0;box-sizing:border-box;overflow-x:hidden;overflow-x:clip;padding-left:0;padding-right:0;padding-top:0;padding-bottom:max(24px,env(safe-area-inset-bottom,0px))}.table-container{display:block;min-height:0;width:100%;max-width:100%;min-width:0;overflow-x:hidden;overflow-x:clip}.table-layout{display:flex;flex-direction:column;min-height:0;min-width:0;width:100%;max-width:var(--sz-quiz-max-width);margin:0 auto;padding-left:18px;padding-right:18px;box-sizing:border-box;background:transparent;border-radius:0;border:none;box-shadow:none;overflow:visible;overflow-x:hidden;overflow-x:clip;position:relative;z-index:1}.main-content{display:flex;flex-direction:column;background:transparent;min-width:0;width:100%;max-width:100%;min-height:0;flex:1;overflow-x:hidden;overflow-x:clip}.sz-quiz-content-shell{width:100%}@media(max-width:768px){.table-main{padding:var(--sz-mobile-side-gutter, 10px);padding-top:0;padding-bottom:max(var(--sz-mobile-side-gutter, 10px),env(safe-area-inset-bottom,0px))}.table-container{display:flex;flex-direction:column}.table-layout{border-radius:var(--radius-md)}.main-content{min-height:calc(100vh - 200px)}}@media(max-width:640px){.table-main{padding:var(--sz-mobile-side-gutter, 10px);padding-top:0;padding-bottom:max(var(--sz-mobile-side-gutter, 10px),env(safe-area-inset-bottom,0px))}.table-layout{border-radius:0 0 var(--radius-sm) var(--radius-sm)}}@media(max-width:480px){.table-main{padding:var(--sz-mobile-side-gutter-xs, 8px);padding-top:0;padding-bottom:max(var(--sz-mobile-side-gutter-xs, 8px),env(safe-area-inset-bottom,0px))}}.sz-quiz-top-ad{width:100%;max-width:var(--sz-quiz-max-width);margin:0 auto;padding-left:var(--sz-quiz-side-padding);padding-right:var(--sz-quiz-side-padding);height:var(--sz-quiz-top-ad-height);min-height:var(--sz-quiz-top-ad-height);max-height:var(--sz-quiz-top-ad-height);box-sizing:border-box;display:flex;justify-content:center;align-items:center;background:var(--bg-app);overflow:hidden}.sz-quiz-top-ad__slot{width:min(100%,var(--sz-quiz-top-ad-slot-width));height:var(--sz-quiz-top-ad-height);min-height:var(--sz-quiz-top-ad-height);max-height:var(--sz-quiz-top-ad-height);display:flex;align-items:center;justify-content:center;overflow:hidden}.sz-quiz-top-ad__slot>ins.adsbygoogle{display:block!important;width:min(100%,var(--sz-quiz-top-ad-slot-width));max-width:100%;height:var(--sz-quiz-top-ad-height)!important;min-height:var(--sz-quiz-top-ad-height)!important;max-height:var(--sz-quiz-top-ad-height)!important;margin:0 auto!important;overflow:hidden}.sz-quiz-top-ad__slot>ins.adsbygoogle>iframe{width:100%!important;height:100%!important;max-height:var(--sz-quiz-top-ad-height)!important;margin:0 auto!important}.sz-table-display-ad-block{width:100%;display:flex;flex-direction:column;gap:0;margin:0;padding:0}.sz-table-display-ad{width:100%;min-height:90px;margin:0;padding:0;box-sizing:border-box;display:block}.sz-table-display-ad>ins.adsbygoogle{display:block!important;width:100%;max-width:100%;min-height:90px;margin:0 auto!important}.sz-table-display-ad--footer-tail,.sz-table-display-ad--footer-tail>ins.adsbygoogle{min-height:90px}.sz-quiz-rail{position:fixed;top:var(--sz-quiz-header-offset, var(--common-header-offset, 52px));bottom:var(--common-footer-offset, 0px);width:calc(50% - var(--sz-quiz-max-width) / 2);display:none;z-index:40;transition:top .3s ease}.sz-quiz-rail--left{left:0}.sz-quiz-rail--right{right:0}@media(min-width:1140px){.sz-quiz-rail{display:flex;flex-direction:column;align-items:stretch}.sz-quiz-content-shell{display:grid;grid-template-columns:minmax(120px,1fr) minmax(0,var(--sz-quiz-max-width)) minmax(120px,1fr);align-items:start}.table-main{grid-column:2;grid-row:1}.sz-quiz-rail--left,.sz-quiz-rail--right{padding:16px 0 0}.sz-quiz-rail--left{display:none}.sz-quiz-rail-ad{width:100%;max-width:100%}.sz-quiz-rail-ad--left,.sz-quiz-rail-ad--right{flex:1;display:flex;align-items:flex-start;justify-content:center}.sz-quiz-rail-ad>ins.adsbygoogle{width:auto;max-width:100%;flex:0 0 auto}.sz-quiz-rail--right{position:sticky;top:var(--sz-quiz-header-offset, var(--common-header-offset, 52px));right:auto;bottom:auto;grid-column:3;grid-row:1;align-self:start;width:auto;min-height:0;height:var(--sz-quiz-right-rail-height);max-height:var(--sz-quiz-right-rail-track-height);padding-top:0;overflow:hidden}.sz-quiz-rail--right>.sz-folder-file-table-outline-panel{flex:0 0 var(--sz-quiz-right-rail-outline-height);height:var(--sz-quiz-right-rail-outline-height);min-height:var(--sz-quiz-right-rail-outline-height);max-height:var(--sz-quiz-right-rail-outline-height);display:flex;flex-direction:column;overflow:hidden}.sz-quiz-rail-half{display:none;flex:0 0 var(--sz-quiz-right-rail-ad-height);height:var(--sz-quiz-right-rail-ad-height);min-height:var(--sz-quiz-right-rail-ad-height);max-height:var(--sz-quiz-right-rail-ad-height);flex-direction:column;overflow:hidden}.sz-quiz-rail-ad--right{display:flex;flex:1 1 100%;height:100%;min-height:0;align-items:flex-start;justify-content:center}.sz-quiz-rail-divider{display:none;margin:0;border:none;border-top:1px solid #e5e7eb;flex:0 0 var(--sz-quiz-right-rail-divider-height);height:var(--sz-quiz-right-rail-divider-height)}.sz-quiz-rail--right .sz-quiz-rail-ad>ins.adsbygoogle{overflow:hidden}}@media(min-width:1140px){html[data-imgobot-ads=on] .sz-quiz-rail--left,html[data-imgobot-ads=on] .sz-quiz-rail-half{display:flex}html[data-imgobot-ads=on] .sz-quiz-rail-divider{display:block}}.outline-panel{--op-bg: #ffffff;--op-text: #1a1a1a;--op-text-dim: #999690;--op-text-mid: #5c5955;--op-accent: #2b7a5f;--op-border: #e8e6e3;--op-hover: rgba(43, 122, 95, .04);--op-active-bg: rgba(43, 122, 95, .09);--op-radius: 8px;--op-row-h: 30px;--op-indent: 18px;--op-transition: .16s cubic-bezier(.22, 1, .36, 1);display:flex;flex-direction:column;height:100%;background:var(--op-bg);color:var(--op-text);font-size:12.5px;line-height:1.4;letter-spacing:-.01em;-webkit-font-smoothing:antialiased;user-select:none;overflow:hidden}.outline-panel__head{display:flex;align-items:center;justify-content:space-between;padding:14px 14px 10px;flex-shrink:0;border-bottom:1px solid var(--op-border)}.outline-panel__title{font-size:12px;font-weight:700;letter-spacing:.02em;color:var(--op-text)}.outline-panel__body-wrap{flex:1;position:relative;overflow:hidden;min-height:0}.outline-panel__body-wrap:before,.outline-panel__body-wrap:after{content:"";position:absolute;left:0;right:0;height:24px;pointer-events:none;z-index:2;opacity:0;transition:opacity .2s}.outline-panel__body-wrap:before{top:0;background:linear-gradient(var(--op-bg),transparent)}.outline-panel__body-wrap:after{bottom:0;background:linear-gradient(transparent,var(--op-bg))}.outline-panel__body-wrap.can-scroll-up:before{opacity:1}.outline-panel__body-wrap.can-scroll-down:after{opacity:1}.outline-panel__scroll-hint{position:absolute;bottom:2px;left:0;right:0;display:flex;align-items:center;justify-content:center;gap:4px;padding:6px 0 2px;font-size:10px;color:var(--op-accent);pointer-events:none;z-index:3;opacity:0;transition:opacity .2s}.outline-panel__body-wrap.can-scroll-down .outline-panel__scroll-hint{opacity:1}.outline-panel__scroll-hint:after{content:"";display:inline-block;width:5px;height:5px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);margin-top:-2px;animation:op-bounce-down 1.2s ease-in-out infinite}@keyframes op-bounce-down{0%,to{transform:rotate(45deg) translateY(0)}50%{transform:rotate(45deg) translateY(2px)}}.outline-panel__body{height:100%;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;padding:0 6px 12px;scrollbar-width:thin;scrollbar-color:rgba(0,0,0,.1) transparent}.outline-panel__body::-webkit-scrollbar{width:4px}.outline-panel__body::-webkit-scrollbar-thumb{background:#0000001a;border-radius:4px}.op-section{padding:14px 8px 6px;display:flex;align-items:center;gap:6px}.op-section__dot{width:6px;height:6px;border-radius:50%;background:var(--op-accent);flex-shrink:0}.op-section--personal .op-section__dot{background:#d97706}.op-section__label{font-size:11px;font-weight:700;letter-spacing:.02em;color:var(--op-text-mid)}.op-row{display:flex;align-items:center;height:var(--op-row-h);padding:0 8px;border-radius:var(--op-radius);cursor:pointer;transition:background var(--op-transition),color var(--op-transition);position:relative;gap:6px}.op-row:hover{background:var(--op-hover)}.op-row.is-active{color:var(--op-accent);font-weight:600}.op-row.is-active .op-main{background:var(--op-active-bg)}.op-depth-1{padding-left:calc(8px + var(--op-indent))}.op-depth-2{padding-left:calc(8px + var(--op-indent) * 2)}.op-depth-1:before,.op-depth-2:before{content:"";position:absolute;left:calc(8px + var(--op-indent) * .5 - .5px);top:0;bottom:0;width:1px;background:var(--op-border)}.op-depth-2:before{left:calc(8px + var(--op-indent) * 1.5 - .5px)}.op-chevron{width:14px;height:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--op-text-dim);transition:transform var(--op-transition),color var(--op-transition)}.op-chevron svg{width:10px;height:10px}.op-row:hover .op-chevron{color:var(--op-text-mid)}.op-chevron.is-open{transform:rotate(90deg)}.op-main{display:inline-flex;align-items:center;gap:6px;min-width:0;max-width:100%;flex:0 1 auto;height:100%;padding:0 8px 0 6px;box-sizing:border-box;overflow:hidden;border-radius:var(--op-radius)}.op-icon{width:16px;height:16px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--op-text-dim);transition:color var(--op-transition)}.op-row:hover .op-icon,.op-row.is-active .op-icon{color:var(--op-accent)}.op-icon svg{width:14px;height:14px}.op-label{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.op-count{font-size:9.5px;color:var(--op-text-dim);margin-left:auto;flex-shrink:0;font-variant-numeric:tabular-nums}.op-children{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s cubic-bezier(.22,1,.36,1)}.op-children.is-open{grid-template-rows:1fr}.op-children__inner{overflow:hidden}.op-row--table .op-icon{color:var(--op-accent);opacity:.45}.op-row--table.is-active .op-icon{opacity:1}.op-foot-hint{font-size:10px;color:var(--op-text-dim);display:flex;align-items:center;gap:4px}.op-foot-hint svg{width:12px;height:12px;opacity:.5}.sz-folder-file-table-outline-panel--modal{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}.modal-sz-settings .op-row.is-active{color:inherit;font-weight:inherit}.modal-sz-settings .op-row.is-active .op-main{background:transparent}.modal-sz-settings .op-row--table.is-active .op-icon{opacity:.45}.modal-sz-settings .op-children{display:block;grid-template-rows:none;height:0;overflow:hidden;transition:height .2s cubic-bezier(.22,1,.36,1)}.modal-sz-settings .op-children.is-open{grid-template-rows:none}.op-grip{display:none}.modal-sz-settings .op-grip{display:flex;align-items:center;justify-content:center;width:18px;height:18px;flex-shrink:0;color:var(--op-text-dim);cursor:grab;transition:color var(--op-transition);touch-action:none}.modal-sz-settings .op-grip:hover{color:var(--op-accent)}.modal-sz-settings .op-grip:active{cursor:grabbing}.op-more-btn{display:none}.modal-sz-settings .op-more-btn{display:flex;align-items:center;justify-content:center;width:22px;height:22px;flex-shrink:0;margin-left:auto;border:none;background:none;border-radius:6px;color:var(--op-text-dim);cursor:pointer;opacity:0;transition:opacity var(--op-transition),background var(--op-transition),color var(--op-transition)}.modal-sz-settings .op-row:hover .op-more-btn{opacity:1}.modal-sz-settings .op-more-btn:hover{background:#2b7a5f14;color:var(--op-accent)}.op-inline-input{width:100%;height:22px;padding:0 4px;border:1px solid var(--op-accent);border-radius:4px;background:#fff;font-size:12.5px;color:var(--op-text);outline:none;box-shadow:0 0 0 2px #2b7a5f1f}.op-ctx-menu{position:absolute;z-index:10;min-width:160px;background:#fff;border:1px solid var(--op-border, #e8e6e3);border-radius:10px;box-shadow:0 8px 30px #0000001f,0 2px 6px #0000000a;padding:4px;animation:op-ctx-in .12s ease-out}@keyframes op-ctx-in{0%{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}.op-ctx-menu__item{display:flex;align-items:center;gap:8px;width:100%;height:34px;padding:0 10px;border:none;background:none;border-radius:6px;font-size:13px;font-weight:500;color:#1a1a1a;cursor:pointer;transition:background .12s}.op-ctx-menu__item:hover{background:#0000000a}.op-ctx-menu__item--danger{color:#dc2626}.op-ctx-menu__item--danger:hover{background:#dc26260f}.op-ctx-menu__confirm{padding:8px 4px;display:flex;flex-direction:column;gap:10px}.op-ctx-menu__confirm-text{font-size:13px;font-weight:600;color:#1a1a1a;text-align:center}.op-ctx-menu__confirm-actions{display:flex;gap:6px}.op-ctx-menu__cancel,.op-ctx-menu__danger{flex:1;height:32px;border:none;border-radius:6px;font-size:12.5px;font-weight:600;cursor:pointer;transition:background .12s}.op-ctx-menu__cancel{background:#0000000d;color:#555}.op-ctx-menu__cancel:hover{background:#00000014}.op-ctx-menu__danger{background:#dc2626;color:#fff}.op-ctx-menu__danger:hover{background:#b91c1c}.op-row--dragging{opacity:.4;background:#2b7a5f0a;pointer-events:none}.op-row--ghost{background:var(--op-bg, #fff);box-shadow:0 8px 32px #0000001f,0 2px 8px #0000000f;border-radius:var(--op-radius, 8px);opacity:.95;transform:scale(1.02)}.op-drop-indicator{height:2px;background:var(--op-accent, #2b7a5f);border-radius:1px;margin:0 8px;position:relative;pointer-events:none}.op-drop-indicator:before{content:"";position:absolute;left:-3px;top:-3px;width:8px;height:8px;border-radius:50%;background:var(--op-accent, #2b7a5f)}.op-row--dropped{animation:op-drop-flash .35s ease-out}@keyframes op-drop-flash{0%{background:#2b7a5f1a}to{background:transparent}}.op-row--deleting{opacity:0;transform:translate(-12px) scale(.96);transition:opacity .28s ease,transform .28s ease;pointer-events:none}.toc-text{display:flex;align-items:center;flex-wrap:wrap;gap:.75rem;padding:.5rem 1.5rem;margin:0;font-size:.9375rem;font-weight:700;color:#1f2937;background:#fefce8;width:100%;outline:none;cursor:text;box-sizing:border-box;border-bottom:none}.toc-text__label,.table-header-label{flex:0 1 auto;min-width:0;max-width:min(100%,32ch);font-weight:800;line-height:1.2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.toc-text__label{font-size:1.125rem}.table-header-label{display:inline-block;flex:none;max-width:none;font-size:14px;color:#000;letter-spacing:0;text-transform:none}.toc-text__meta{display:inline-flex;align-items:center;justify-content:flex-start;gap:.5rem;flex:1 1 auto;min-width:0}.toc-text__actions{display:inline-flex;align-items:center;gap:.5rem;margin-left:auto;min-width:0}.toc-text__menu{position:relative;display:inline-flex;align-items:center}.toc-text__menu-toggle{min-width:0}.toc-text__menu-panel{position:absolute;top:calc(100% + .375rem);right:0;display:none;flex-direction:column;gap:.25rem;min-width:9rem;padding:.375rem;border:1px solid #e5e7eb;border-radius:12px;background:#fff;box-shadow:0 18px 40px #0f172a29;z-index:20}.toc-text__menu.is-open .toc-text__menu-panel{display:flex}.toc-text__btn{display:inline-flex;align-items:center;justify-content:center;width:1.75rem;height:1.75rem;padding:0;border:1px solid transparent;border-radius:999px;background:transparent;color:#475569;cursor:pointer;transition:background .18s ease,border-color .18s ease,color .18s ease}.toc-text__btn--text{width:auto;height:auto;padding:.375rem .625rem;border:1px solid rgba(226,232,240,.78);border-radius:999px;box-sizing:border-box;font-size:.8125rem;font-weight:700;line-height:1.2;white-space:nowrap;background:transparent;box-shadow:0 4px 12px #0f172a0a}.toc-text__menu-item{justify-content:flex-start;gap:.5rem;width:100%;padding:.5rem .625rem}.toc-text__menu-item .material-symbols-outlined{font-size:1rem}.toc-text__btn .material-symbols-outlined{font-size:1.125rem}.toc-text__btn:hover{background:#ffffffe0;border-color:#e2e8f0eb;color:#312e81}.toc-text__btn--save-content{color:#15803d;border-color:#bbf7d0;background:transparent}.toc-text__btn--save-content.has-changes{background:transparent}.toc-text__btn--save-content:hover{background:#dcfce7;border-color:#86efac;color:#166534}@media(max-width:640px){.toc-text__menu-panel{right:-.25rem;min-width:8.5rem}}.toc-text--editing .toc-text__label{background:#fffffff0;border-radius:999px;padding:.25rem .625rem;outline:2px solid rgba(99,102,241,.28)}.toc-text__btn--confirm:hover{color:#2e7d32}.table-section>.toc-text{margin:0;width:100%;border-radius:var(--sz-card-radius) var(--sz-card-radius) 0 0}.table-section[data-table-id]{scroll-margin-top:calc(var(--sz-quiz-header-offset, var(--common-header-visible-offset, var(--common-header-offset, 52px))) + 8px)}.table-section[data-table-id]>.toc-text{position:sticky;top:var(--sz-quiz-header-offset, var(--common-header-visible-offset, var(--common-header-offset, 52px)));z-index:12}
