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auto;width:.7rem;height:.7rem;margin-top:.3rem;padding:0;border:none;border-radius:var(--radius-sm, 4px);background:var(--text-secondary, #6b6b73);cursor:pointer}.row__twisty,.row__bullet,.row__note-badge{position:relative}.row__twisty:after,.row__bullet:after,.row__note-badge:after{content:"";position:absolute;inset:-10px}.app-external-update,.app-detached-notice{position:fixed;bottom:calc(72px + env(safe-area-inset-bottom,0px));left:12px;right:12px;z-index:90;display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:12px;border:1px solid var(--border);background:var(--surface);color:var(--text-primary)}.app-detached-notice{bottom:calc(156px + env(safe-area-inset-bottom,0px))}:root{--bg: #ffffff;--surface: #f7f7f8;--border: #e2e2e5;--text-primary: #1a1a1e;--text-secondary: #6b6b73;--accent: #2563eb;--node-bg: #ffffff;--node-border: #d8d8dc;--node-selected: var(--accent);--danger: #d64545;--success: #2f9e64;--control-selected-bg: var(--accent);--control-selected-fg: #fff;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--radius-sm: 4px;--radius-md: 8px;--shadow-sm: 0 1px 2px rgb(0 0 0 / 8%);--font-size-xs: .75rem;--font-size-sm: .8125rem;--font-size-md: .875rem;--font-size-base: 1rem;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif}.mobile-header .toolbar__save-retry{min-height:44px;flex-shrink:0}:root[data-theme=dark]{--bg: #16161a;--surface: #1e1e23;--border: #2c2c33;--text-primary: #ececef;--text-secondary: #9a9aa2;--node-bg: #1e1e23;--node-border: #33333b;--shadow-sm: 0 1px 2px rgb(0 0 0 / 40%);--accent: #7aa2ff;--danger: #f07171;--success: #4ec98a;--control-selected-fg: var(--bg)}:where(button,input,[tabindex],a):focus-visible{outline:2px solid var(--accent);outline-offset:2px}html,body{margin:0;height:100%}body{font-family:var(--font-sans);line-height:1.5;color:var(--text-primary);background:var(--bg)}#app{height:100%}.app-shell{display:flex;flex-direction:column;height:100%;min-height:0;padding:0 env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);background:var(--bg);color:var(--text-primary)}.app-main{flex:1 1 auto;display:flex;min-height:0}.app-readonly-banner{flex:0 0 auto;margin:0;padding:var(--space-2) var(--space-4);border-bottom:1px solid var(--border);background:var(--surface);color:var(--text-secondary);font-size:.8125rem;line-height:1.4}.app-views{position:relative;flex:1 1 auto;min-width:0;min-height:0}.app-view{position:absolute;inset:0;overflow:auto}.app-view[hidden]{display:none}.app-view--outline{padding:var(--space-2) 0}.app-main--mobile .app-view--outline{padding-bottom:calc(72px + env(safe-area-inset-bottom))}.app-main--mobile .app-view--map{bottom:calc(72px + env(safe-area-inset-bottom))}.app-view--map{overflow:hidden;pointer-events:none}.app-map-host{width:100%;height:100%;pointer-events:auto}.app-hint{margin:var(--space-4) var(--space-4) 0;color:var(--text-secondary);font-size:.8125rem}.app-toast{position:fixed;left:50%;bottom:calc(var(--space-4) + env(safe-area-inset-bottom));transform:translate(-50%);z-index:40;display:flex;align-items:center;gap:var(--space-3);max-width:min(40rem,calc(100vw - var(--space-6)));padding:var(--space-3) var(--space-4);border:1px solid var(--danger);border-radius:var(--radius-md);background:var(--surface);color:var(--text-primary);box-shadow:var(--shadow-sm);font-size:.875rem}.app-toast__action{flex:0 0 auto;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);color:var(--accent);padding:var(--space-1) var(--space-3);font:inherit;cursor:pointer}.app-toast--update{border-color:var(--accent)}.app-toast__dismiss{flex:0 0 auto;border:none;background:transparent;color:var(--text-secondary);padding:var(--space-1) var(--space-2);font:inherit;cursor:pointer}.ios-hint{box-sizing:border-box;display:flex;align-items:center;gap:var(--space-3, 12px);flex:0 0 auto;width:100%;padding:var(--space-2, 8px) var(--space-3, 12px);padding-bottom:calc(var(--space-2, 8px) + env(safe-area-inset-bottom));border-top:1px solid var(--border, #e2e2e5);background:var(--surface, #f7f7f8);color:var(--text-primary, #1a1a1e);font-size:var(--font-size-sm, .8125rem)}.ios-hint__text{flex:1 1 auto;margin:0}.ios-hint__action{flex:0 0 auto;border:none;background:none;color:var(--accent, #2563eb);padding:0;font:inherit;text-decoration:underline;cursor:pointer}.ios-hint__close{flex:0 0 auto;min-width:32px;min-height:32px;border:none;background:none;color:var(--text-secondary, #6b6b73);font-size:1rem;line-height:1;cursor:pointer}.ios-guide-backdrop{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:var(--space-4, 16px);background:#0006}.ios-guide{box-sizing:border-box;width:min(24rem,100%);max-height:calc(100% - var(--space-6, 32px));overflow-y:auto;border-radius:var(--radius-md, 8px);background:var(--bg, #fff);color:var(--text-primary, #1a1a1e);padding:var(--space-4, 16px);box-shadow:var(--shadow-sm, 0 1px 2px rgb(0 0 0 / 8%))}.ios-guide__title{margin:0 0 var(--space-2, 8px);font-size:var(--font-size-base, 1rem)}.ios-guide__lead{margin:0 0 var(--space-3, 12px);color:var(--text-secondary, #6b6b73);font-size:var(--font-size-sm, .8125rem)}.ios-guide__steps{margin:0 0 var(--space-4, 16px);padding-left:1.25em;font-size:var(--font-size-md, .875rem)}.ios-guide__steps li+li{margin-top:var(--space-2, 8px)}.ios-guide__icon{display:inline-block;font-style:normal}.ios-guide__close{min-width:44px;min-height:44px;border:1px solid var(--border, #e2e2e5);border-radius:var(--radius-sm, 4px);background:var(--surface, #f7f7f8);color:var(--text-primary, #1a1a1e);font:inherit;cursor:pointer}.mobile-header{box-sizing:border-box;flex:0 0 auto;display:flex;align-items:center;gap:var(--space-2, 8px);min-height:44px;padding:var(--space-1, 4px) var(--space-2, 8px);padding-top:calc(var(--space-1, 4px) + env(safe-area-inset-top));border-bottom:1px solid var(--border, #e2e2e5);background:var(--surface, #f7f7f8)}.mobile-header__menu-button,.mobile-header__search-button{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:none;border-radius:var(--radius-sm, 4px);background:transparent;color:var(--text-secondary, #6b6b73);padding:0;cursor:pointer}.mobile-header__title{flex:1 1 auto;min-width:0;border:1px solid transparent;border-radius:var(--radius-sm, 4px);background:transparent;color:var(--text-primary, #1a1a1e);padding:var(--space-1, 4px) var(--space-2, 8px);font:inherit;font-weight:600}.mobile-header__save-status{flex:0 0 auto;display:inline-flex;align-items:center;gap:var(--space-1, 4px);min-width:44px;min-height:44px;border:none;background:transparent;padding:0 var(--space-1, 4px);cursor:pointer}.mobile-header__save-dot{width:8px;height:8px;border-radius:50%;background:var(--text-secondary, #6b6b73)}.mobile-header__save-status[data-status=idle] .mobile-header__save-dot{background:var(--success, #2f9e64)}.mobile-header__save-status[data-status=error] .mobile-header__save-dot{background:var(--danger, #d64545)}.mobile-header__save-text{font-size:var(--font-size-xs, .75rem);color:var(--text-secondary, #6b6b73);white-space:nowrap}.mobile-view-tabs{box-sizing:border-box;flex:0 0 auto;display:flex;justify-content:center;padding:var(--space-1, 4px) 0;border-bottom:1px solid var(--border, #e2e2e5);background:var(--surface, #f7f7f8)}.mobile-view-tabs .toolbar__tab{height:32px}.selection-toolbar{position:fixed;left:0;right:0;bottom:var(--keyboard-inset, 0px);z-index:25;box-sizing:border-box;display:flex;align-items:stretch;gap:var(--space-1, 4px);padding:var(--space-2, 8px);padding-bottom:calc(var(--space-2, 8px) + env(safe-area-inset-bottom));border-top:1px solid var(--border, #e2e2e5);background:var(--surface, #f7f7f8);box-shadow:0 -1px 4px #00000014}.selection-toolbar__add-child,.selection-toolbar__add-sibling,.selection-toolbar__note,.selection-toolbar__more{flex:1 1 0;min-height:44px;border:1px solid var(--border, #e2e2e5);border-radius:var(--radius-sm, 4px);background:var(--bg, #fff);color:var(--text-primary, #1a1a1e);font:inherit;font-size:var(--font-size-sm, .8125rem);cursor:pointer}.selection-toolbar__note--has-note{color:var(--accent, #2563eb);border-color:var(--accent, #2563eb)}.selection-toolbar__more{flex:0 0 44px;font-size:1rem}.selection-more-sheet-backdrop,.more-sheet-backdrop{position:fixed;inset:0;z-index:30;display:flex;align-items:flex-end;background:#00000052}.selection-more-sheet,.more-sheet{box-sizing:border-box;width:100%;max-height:70vh;overflow-y:auto;display:flex;flex-direction:column;gap:var(--space-1, 4px);border-radius:var(--radius-md, 8px) var(--radius-md, 8px) 0 0;background:var(--bg, #fff);padding:var(--space-2, 8px);padding-bottom:calc(var(--space-3, 12px) + env(safe-area-inset-bottom));box-shadow:var(--shadow-sm, 0 1px 2px rgb(0 0 0 / 8%))}.selection-more-sheet__item,.more-sheet__item{min-height:44px;border:none;border-radius:var(--radius-sm, 4px);background:transparent;color:var(--text-primary, #1a1a1e);padding:var(--space-2, 8px) var(--space-3, 12px);font:inherit;text-align:left;cursor:pointer}.selection-more-sheet__item:active,.more-sheet__item:active{background:var(--surface, #f7f7f8)}.selection-more-sheet__item--delete{color:var(--danger, #d64545)}.more-sheet__markdown-notice{margin:0;padding:0 var(--space-3, 12px) var(--space-2, 8px);color:var(--text-secondary, #6b6b73);font-size:.75rem;line-height:1.4}.more-sheet__layout-group{display:flex;gap:var(--space-1, 4px);padding:var(--space-1, 4px) var(--space-3, 12px)}.more-sheet__layout-option{flex:1 1 0;min-height:40px;border:1px solid var(--border, #e2e2e5);border-radius:var(--radius-sm, 4px);background:var(--bg, #fff);color:var(--text-secondary, #6b6b73);font:inherit;cursor:pointer}.more-sheet__layout-option--active{background:var(--control-selected-bg, var(--accent, #2563eb));border-color:var(--control-selected-bg, var(--accent, #2563eb));color:var(--control-selected-fg, #fff)}.more-sheet__storage-label{margin:var(--space-1, 4px) var(--space-3, 12px) 0;color:var(--text-secondary, #6b6b73);font-size:var(--font-size-xs, .75rem)}.more-sheet__storage-warning{margin:0 var(--space-3, 12px);padding:var(--space-1, 4px) 0;color:var(--text-primary, #1a1a1e);font-size:var(--font-size-xs, .75rem)}.more-sheet__close{margin-top:var(--space-2, 8px);min-height:44px;border:1px solid var(--border, #e2e2e5);border-radius:var(--radius-sm, 4px);background:var(--surface, #f7f7f8);color:var(--text-primary, #1a1a1e);font:inherit;cursor:pointer}.mobile-header__title:disabled,.mobile-header__search-button:disabled,.more-sheet__item:disabled,.more-sheet__layout-option:disabled{cursor:not-allowed;opacity:.5}.toolbar{box-sizing:border-box;flex:0 0 auto;display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-3, 12px);min-height:48px;padding:var(--space-1, 4px) var(--space-3, 12px);padding-top:calc(var(--space-1, 4px) + env(safe-area-inset-top));border-bottom:1px solid var(--border, #e2e2e5);background:var(--surface, #f7f7f8)}.toolbar__group{display:flex;align-items:center;gap:var(--space-2, 8px);min-width:0}.toolbar__group--start{flex:1 1 auto;min-width:0}.toolbar__group--center{flex:0 0 auto}.toolbar__group--end{flex:1 1 auto;justify-content:flex-end}.toolbar__title{flex:0 1 16rem;min-width:4rem;border:1px solid transparent;border-radius:var(--radius-sm, 4px);background:transparent;color:var(--text-primary, #1a1a1e);padding:var(--space-1, 4px) var(--space-2, 8px);font:inherit;font-weight:600}.toolbar__title:hover,.toolbar__title:focus{border-color:var(--border, #e2e2e5);background:var(--bg, #fff)}.toolbar__title:focus-visible{outline:2px solid var(--accent, #2563eb);outline-offset:2px}.toolbar__save-status{display:inline-flex;align-items:center;gap:var(--space-2, 8px);flex:0 0 auto;color:var(--text-secondary, #6b6b73);font-size:var(--font-size-sm, .8125rem);white-space:nowrap}.toolbar__save-dot{width:8px;height:8px;border-radius:50%;background:var(--text-secondary, #6b6b73)}.toolbar__save-status[data-status=idle] .toolbar__save-dot{background:var(--success, #2f9e64)}.toolbar__save-status[data-status=saving] .toolbar__save-dot{background:var(--accent, #2563eb);opacity:.5}.toolbar__save-status[data-status=error]{color:var(--danger, #d64545)}.toolbar__save-status[data-status=error] .toolbar__save-dot{background:var(--danger, #d64545)}.toolbar__save-retry{border:none;background:none;color:var(--accent, #2563eb);padding:0;font:inherit;text-decoration:underline;cursor:pointer}.toolbar__storage-label{flex:0 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-secondary, #6b6b73);font-size:var(--font-size-sm, .8125rem)}.toolbar__storage-warning{flex:1 0 100%;margin:0 calc(-1 * var(--space-3, 12px)) calc(-1 * var(--space-1, 4px));padding:var(--space-1, 4px) var(--space-3, 12px);border:none;border-top:1px solid var(--danger, #d64545);border-radius:0;color:var(--text-primary, #1a1a1e);background:color-mix(in srgb,var(--danger, #d64545) 10%,var(--surface, #f7f7f8));font-size:var(--font-size-sm, .8125rem);line-height:1.4}.toolbar__tab{height:36px;border:1px solid var(--border, #e2e2e5);background:var(--bg, #fff);color:var(--text-secondary, #6b6b73);padding:0 var(--space-4, 16px);font:inherit;font-size:var(--font-size-md, .875rem);cursor:pointer}.toolbar__tab--outline{border-radius:var(--radius-sm, 4px) 0 0 var(--radius-sm, 4px)}.toolbar__tab--map{border-radius:0 var(--radius-sm, 4px) var(--radius-sm, 4px) 0;border-left-width:0}.toolbar__tab--active{background:var(--control-selected-bg, var(--accent, #2563eb));border-color:var(--control-selected-bg, var(--accent, #2563eb));color:var(--control-selected-fg, #fff)}.toolbar__layout-select{display:inline-flex;gap:var(--space-1, 4px)}.toolbar__layout-option{height:36px;border:1px solid var(--border, #e2e2e5);border-radius:var(--radius-sm, 4px);background:var(--bg, #fff);color:var(--text-secondary, #6b6b73);padding:0 var(--space-2, 8px);font:inherit;font-size:var(--font-size-sm, .8125rem);cursor:pointer}.toolbar__layout-option--active{background:var(--control-selected-bg, var(--accent, #2563eb));border-color:var(--control-selected-bg, var(--accent, #2563eb));color:var(--control-selected-fg, #fff)}.toolbar__search-button,.toolbar__theme-toggle,.toolbar__note-toggle,.toolbar__more-button{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:var(--radius-sm, 4px);background:transparent;color:var(--text-secondary, #6b6b73);width:36px;height:36px;padding:0;font-size:1rem;line-height:1;cursor:pointer}@media(pointer:coarse){.toolbar__search-button,.toolbar__theme-toggle,.toolbar__note-toggle,.toolbar__more-button{width:44px;height:44px}}.toolbar__search-button:hover,.toolbar__theme-toggle:hover,.toolbar__note-toggle:hover{border-color:var(--border, #e2e2e5);background:var(--bg, #fff)}.toolbar__icon{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;display:block}.toolbar__note-toggle{color:var(--text-secondary, #6b6b73)}.toolbar__note-toggle--has-note,.toolbar__note-toggle[aria-pressed=true]{color:var(--text-primary, #1a1a1e)}.toolbar__more{position:relative}.toolbar__more-button:hover,.toolbar__more-button[aria-expanded=true]{border-color:var(--border, #e2e2e5);background:var(--bg, #fff)}.toolbar__more-menu{position:absolute;top:calc(100% + 4px);right:0;z-index:20;display:flex;flex-direction:column;min-width:12rem;border:1px solid var(--border, #e2e2e5);border-radius:var(--radius-sm, 4px);background:var(--surface, #f7f7f8);padding:var(--space-1, 4px);box-shadow:var(--shadow-sm, 0 1px 2px rgb(0 0 0 / 8%))}.toolbar__more-item{border:none;border-radius:var(--radius-sm, 4px);background:transparent;color:var(--text-primary, #1a1a1e);padding:var(--space-2, 8px) var(--space-3, 12px);font:inherit;font-size:var(--font-size-md, .875rem);text-align:left;cursor:pointer}.toolbar__more-item:hover{background:var(--bg, #fff)}.toolbar__more-markdown-notice{margin:0;padding:0 var(--space-3, 12px) var(--space-2, 8px);color:var(--text-secondary, #6b6b73);font-size:.75rem;line-height:1.4}.toolbar__title:disabled,.toolbar__tab:disabled,.toolbar__search-button:disabled,.toolbar__theme-toggle:disabled,.toolbar__note-toggle:disabled,.toolbar__layout-option:disabled,.toolbar__more-item:disabled,.toolbar__save-retry:disabled{cursor:not-allowed;opacity:.5}.search-overlay{position:fixed;inset:0;z-index:30;display:flex;justify-content:center;align-items:flex-start;padding:calc(10vh + env(safe-area-inset-top)) var(--space-4, 16px) var(--space-4, 16px)}.search-overlay__backdrop{position:absolute;inset:0;background:#00000052}.search-overlay__panel{position:relative;display:flex;flex-direction:column;width:min(32rem,100%);max-height:70vh;overflow:hidden;border:1px solid var(--border, #e2e2e5);border-radius:var(--radius-md, 8px);background:var(--surface, #f7f7f8);box-shadow:var(--shadow-sm, 0 1px 2px rgb(0 0 0 / 8%))}.search-overlay__input{flex:0 0 auto;border:none;border-bottom:1px solid var(--border, #e2e2e5);background:var(--bg, #fff);color:var(--text-primary, #1a1a1e);padding:var(--space-3, 12px) var(--space-4, 16px);font:inherit;font-size:1rem}.search-overlay__input:focus{outline:2px solid var(--accent, #2563eb);outline-offset:-2px}.search-overlay__hint,.search-overlay__empty{margin:0;padding:var(--space-4, 16px);color:var(--text-secondary, #6b6b73);font-size:.875rem}.search-overlay__results{flex:1 1 auto;overflow:auto;margin:0;padding:var(--space-1, 4px);list-style:none}.search-overlay__result{display:flex;flex-direction:column;align-items:flex-start;gap:var(--space-1, 4px);width:100%;border:none;border-radius:var(--radius-sm, 4px);background:transparent;color:var(--text-primary, #1a1a1e);padding:var(--space-2, 8px) var(--space-3, 12px);font:inherit;text-align:left;cursor:pointer}.search-overlay__result--active{background:var(--control-selected-bg, var(--accent, #2563eb));color:var(--control-selected-fg, #fff)}.search-overlay__result-text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.search-overlay__result-trail{font-size:.75rem;opacity:.7;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.app-boot{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4, 16px);min-height:100dvh;padding:var(--space-6, 32px);text-align:center;background:var(--bg, #ffffff);color:var(--text-secondary, #6b6b73)}.app-boot--error{color:var(--text-primary, #1a1a1e)}.app-boot__message{max-width:32rem;margin:0;line-height:1.6}.app-boot__retry{border:1px solid var(--border, #e2e2e5);border-radius:var(--radius-sm, 4px);background:var(--surface, #f7f7f8);color:var(--accent, #2563eb);padding:var(--space-2, 8px) var(--space-4, 16px);font:inherit;cursor:pointer}