:root{--hue:78;--bg:oklch(.985 .006 var(--hue));--bg-elevated:oklch(.995 .003 var(--hue));--bg-sidebar:oklch(.975 .01 var(--hue));--bg-hover:oklch(.45 .04 var(--hue) / .07);--bg-active:oklch(.78 .08 var(--hue) / .22);--bg-active-strong:oklch(.78 .08 var(--hue) / .32);--text:oklch(38% .02 70);--text-strong:oklch(26% .02 70);--text-muted:oklch(50% .018 70);--placeholder:oklch(56% .016 70);--border:oklch(.91 .012 var(--hue));--border-strong:oklch(.84 .02 var(--hue));--accent:oklch(.78 .13 var(--hue));--accent-hover:oklch(.72 .14 var(--hue));--accent-soft:oklch(.96 .03 var(--hue));--accent-ink:oklch(.4 .08 var(--hue));--danger:oklch(54% .18 25);--danger-bg:oklch(54% .18 25/.09);--success:oklch(52% .09 150);--focus:oklch(.62 .12 var(--hue));--lamp:oklch(.76 .12 var(--hue));--on-accent:oklch(28% .04 70);--shadow-sm:0 1px 2px oklch(35% .03 70/.05);--shadow:0 4px 8px oklch(35% .03 70/.08);--shadow-soft:0 3px 6px oklch(35% .03 70/.07);--ring:0 0 0 3px oklch(.78 .13 var(--hue) / .28);--radius:14px;--radius-sm:10px;--radius-xs:7px;--sidebar-width:292px;--content-max:1280px;--tap:40px;--tap-mobile:44px;--duration:.2s;--ease:cubic-bezier(.22, 1, .36, 1);--font:"Source Sans 3", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;--font-display:"Source Serif 4", "Noto Serif SC", "Songti SC", Georgia, serif;--mono:ui-monospace, "Cascadia Code", Consolas, monospace;color:var(--text);background:var(--bg);font-family:var(--font);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-optical-sizing:auto;font-size:16px;line-height:1.55}*,:before,:after{box-sizing:border-box}html,body,#app{height:100%;min-height:100%;margin:0}body{background:var(--bg);min-height:100dvh;color:var(--text)}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer;background:0 0;border:none}button:disabled{cursor:not-allowed;opacity:.55}:focus-visible{outline:2px solid var(--focus);outline-offset:2px}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.app-root,.app-shell,.loading-screen,.fatal-screen{height:100%;min-height:100dvh}.app-shell{grid-template-columns:var(--sidebar-width) minmax(0, 1fr);background:0 0;height:100%;min-height:100dvh;display:grid}.app-shell.sidebar-collapsed{grid-template-columns:0 minmax(0,1fr)}.loading-screen,.fatal-screen{text-align:center;place-content:center;gap:14px;padding:24px;display:grid}.loading-screen{color:var(--text-muted);letter-spacing:.01em;font-size:.95rem}.loading-screen:before{content:"";border:2px solid var(--border-strong);border-top-color:var(--accent);border-radius:50%;width:28px;height:28px;margin:0 auto 4px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.fatal-screen h1{color:var(--text-strong);font-family:var(--font-display);letter-spacing:-.01em;margin:0;font-size:1.55rem;font-weight:600}.fatal-screen p{color:var(--text-muted);max-width:28rem;margin:0}.main-pane{background:var(--bg-elevated);border-left:1px solid var(--border);flex-direction:column;min-width:0;height:100%;min-height:100dvh;display:flex;position:relative}.sidebar-launch{z-index:30;top:max(12px, env(safe-area-inset-top));left:max(12px, env(safe-area-inset-left));width:var(--tap);height:var(--tap);border-radius:var(--radius-sm);background:var(--bg-elevated);border:1px solid var(--border);box-shadow:var(--shadow-soft);color:var(--text-strong);transition:background-color var(--duration) var(--ease), border-color var(--duration) var(--ease), transform var(--duration) var(--ease);place-items:center;display:none;position:fixed}.sidebar-launch:hover{background:var(--bg-sidebar);border-color:var(--border-strong)}.sidebar-launch--desktop{display:none}.app-shell.sidebar-collapsed .sidebar-launch--desktop{display:grid}.sidebar-shell{height:100%;min-height:100dvh;position:relative}.sidebar-backdrop{display:none}.sidebar{background:var(--bg-sidebar);border-right:1px solid var(--border);flex-direction:column;height:100%;min-height:100dvh;display:flex;overflow:hidden}.app-shell.sidebar-collapsed .sidebar-shell{pointer-events:none;width:0;overflow:hidden}.sidebar__header{justify-content:space-between;align-items:center;gap:8px;min-height:64px;padding:16px 14px 12px;display:flex}.sidebar__brand{align-items:center;gap:11px;min-width:0;display:flex}.sidebar__logo{background:var(--accent);width:32px;height:32px;color:var(--on-accent);border:1px solid oklch(.62 .1 var(--hue) / .25);border-radius:9px;flex-shrink:0;place-items:center;display:grid}.sidebar__title{font-family:var(--font-display);letter-spacing:-.02em;color:var(--text-strong);white-space:nowrap;margin:0;font-size:1.12rem;font-weight:600}.sidebar__header-actions{align-items:center;gap:2px;display:flex}.sidebar__mobile-close{display:none}.sidebar__nav,.sidebar__notes{padding:0 10px}.sidebar__nav{flex-direction:column;flex:0 auto;min-height:0;max-height:48%;display:flex;overflow:hidden}.sidebar__nav-static{flex-shrink:0;padding-bottom:4px}.sidebar__groups-scroll{scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent;flex:auto;min-height:0;padding-bottom:4px;overflow:auto}.sidebar__notes{scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent;flex:auto;min-height:0;padding-bottom:10px;overflow:auto}.sidebar__section-label{letter-spacing:.01em;color:var(--text-muted);margin:16px 10px 8px;font-size:12px;font-weight:600}.sidebar__empty-hint{color:var(--text-muted);margin:4px 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6px 40px;font-size:12px}.note-list{flex-direction:column;gap:2px;margin:0;padding:0;list-style:none;display:flex}.note-list__item{border-radius:var(--radius-sm);grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:2px;display:grid}.note-list__title{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.note-list__menu{position:relative}.note-editor{z-index:1;min-height:0;width:min(100%, var(--content-max));flex-direction:column;flex:1;margin:0 auto;padding:36px 36px 24px;display:flex;position:relative}.note-editor__header{background-image:linear-gradient(90deg, transparent, var(--border) 8%, var(--border) 92%, transparent);background-position:bottom;background-repeat:no-repeat;background-size:100% 1px;border-bottom:1px solid #0000;margin-bottom:8px;padding-bottom:16px;padding-left:48px}@media (width>=1024px){.app-shell:not(.sidebar-collapsed) .note-editor__header{padding-left:0}}.note-editor__title{width:100%;color:var(--text-strong);font-family:var(--font-display);letter-spacing:-.02em;caret-color:var(--accent);text-wrap:balance;background:0 0;border:none;outline:none;padding:4px 0 2px;font-size:clamp(1.75rem,2.8vw,2.25rem);font-weight:600;line-height:1.25}.note-editor__title::placeholder{color:var(--placeholder);font-weight:500}.note-editor__title:focus-visible{box-shadow:inset 0 -2px 0 var(--accent);outline:none}.note-editor__meta{color:var(--text-muted);letter-spacing:.01em;flex-wrap:wrap;align-items:center;gap:8px 16px;margin-top:10px;font-size:13px;display:flex}.note-editor__status{align-items:center;gap:8px;min-height:28px;display:inline-flex}.note-editor__status--muted{opacity:.85}.note-editor__status--error{color:var(--danger);opacity:1}.note-editor__status--muted:before{content:"";background:var(--lamp);width:6px;height:6px;box-shadow:0 0 0 3px oklch(.76 .12 var(--hue) / .24);border-radius:50%;flex-shrink:0}.note-editor__status--error:before{content:"";background:var(--danger);border-radius:50%;flex-shrink:0;width:6px;height:6px;box-shadow:0 0 0 3px oklch(53% .19 15/.16)}.note-editor__hint{color:var(--text-muted);margin:8px 0 0;font-size:12px}.note-editor__content{resize:none;width:100%;min-height:240px;color:var(--text-strong);letter-spacing:.01em;caret-color:var(--accent);background:0 0;border:none;outline:none;flex:1;padding:20px 0 40px;font-size:1.05rem;line-height:1.8}.note-editor__content::placeholder{color:var(--placeholder)}.empty-state{z-index:1;text-align:center;flex:1;place-content:center;justify-items:center;gap:14px;padding:48px 24px;display:grid;position:relative}.empty-state__mark{background:var(--accent-soft);border:1px solid var(--border-strong);width:72px;height:72px;color:var(--accent);border-radius:16px;place-items:center;margin-bottom:4px;display:grid}.empty-state__mark svg{width:34px;height:34px}.empty-state__title{color:var(--text-strong);font-family:var(--font-display);letter-spacing:-.02em;text-wrap:balance;margin:0;font-size:1.55rem;font-weight:600}.empty-state__desc{max-width:22rem;color:var(--text-muted);margin:0;line-height:1.65}.btn{min-height:var(--tap);border-radius:var(--radius-sm);letter-spacing:.01em;transition:background-color var(--duration) var(--ease), border-color var(--duration) var(--ease), color var(--duration) var(--ease), box-shadow var(--duration) var(--ease), transform var(--duration) var(--ease);border:1px solid #0000;justify-content:center;align-items:center;gap:6px;padding:0 16px;font-weight:550;display:inline-flex}.btn:active:not(:disabled){transform:translateY(1px)}.btn--primary{background:var(--accent);color:var(--on-accent)}.btn--primary:hover{background:var(--accent-hover)}.btn--danger{background:var(--danger);color:#fff}.btn--ghost{border-color:var(--border-strong);color:var(--text-strong);background:0 0}.btn--ghost:hover{background:var(--bg-hover);border-color:var(--border-strong)}.btn--small{min-height:32px;padding:0 11px;font-size:13px}.icon-btn{width:var(--tap);height:var(--tap);border-radius:var(--radius-sm);color:var(--text-muted);transition:background-color var(--duration) var(--ease), color var(--duration) var(--ease);flex-shrink:0;place-items:center;display:inline-grid}.icon-btn:hover,.icon-btn:focus-visible{background:var(--bg-hover);color:var(--text-strong)}.app-icon{color:currentColor;pointer-events:none;flex-shrink:0;line-height:0;display:inline-flex}.app-icon svg{width:100%;height:100%;display:block}.menu{position:relative}.menu__panel{z-index:40;border-radius:var(--radius);background:var(--bg-elevated);border:1px solid var(--border);min-width:148px;box-shadow:var(--shadow);animation:menu-in .16s var(--ease) both;padding:6px;position:absolute;top:calc(100% - 2px);right:0}.menu__panel--anchored{max-height:min(280px,100dvh - 16px);margin:0;position:fixed;top:auto;right:auto}@keyframes menu-in{0%{opacity:0;transform:translateY(-4px)scale(.98)}to{opacity:1;transform:none}}.menu__panel--wide{min-width:172px;max-height:240px;overflow:auto}.menu__label{color:var(--text-muted);letter-spacing:.01em;padding:7px 10px 5px;font-size:12px;font-weight:600}.menu__item{border-radius:var(--radius-xs);text-align:left;width:100%;min-height:36px;color:var(--text-strong);transition:background-color var(--duration) var(--ease);padding:8px 10px}.menu__item:hover,.menu__item:focus-visible{background:var(--bg-hover)}.menu__item--danger{color:var(--danger)}.menu__item--danger:hover,.menu__item--danger:focus-visible{background:var(--danger-bg)}.menu__divider{background:var(--border);height:1px;margin:5px 6px}.action-dialog{border:1px solid var(--border);max-width:min(420px,100vw - 32px);color:var(--text);background:var(--bg-elevated);box-shadow:var(--shadow);border-radius:18px;padding:0}.action-dialog::backdrop{background:oklch(.24 .028 var(--hue) / .4)}.action-dialog__panel{padding:22px 22px 18px}.action-dialog__title{font-family:var(--font-display);letter-spacing:-.015em;color:var(--text-strong);margin:0 0 10px;font-size:1.2rem;font-weight:600}.action-dialog__desc{color:var(--text-muted);white-space:pre-wrap;margin:0;line-height:1.65}.action-dialog__actions{justify-content:flex-end;gap:8px;margin-top:20px;display:flex}@media (width<=1023px){.app-shell,.app-shell.sidebar-collapsed{grid-template-columns:minmax(0,1fr)}.sidebar-shell{z-index:50;pointer-events:none;width:100%;position:fixed;inset:0}.sidebar-shell.is-mobile-open{pointer-events:auto}.sidebar-backdrop{background:oklch(.24 .028 var(--hue) / .4);opacity:0;transition:opacity var(--duration) var(--ease);display:block;position:absolute;inset:0}.sidebar-shell.is-mobile-open .sidebar-backdrop{opacity:1}.sidebar{width:min(var(--sidebar-width), 88vw);height:100dvh;min-height:100dvh;transition:transform var(--duration) var(--ease);padding-top:env(safe-area-inset-top);box-shadow:var(--shadow);position:absolute;top:0;left:0;transform:translate(-105%)}.sidebar-shell.is-mobile-open .sidebar{transform:translate(0)}.sidebar__desktop-collapse{display:none}.sidebar__mobile-close{display:inline-grid}.sidebar-launch--mobile{display:grid}.app-shell.sidebar-collapsed .sidebar-launch--desktop{display:none}.main-pane{border-left:none}.note-editor{padding:24px 18px 18px}.note-editor__header{padding-left:52px}}@media (width<=767px){:root{--tap:var(--tap-mobile)}.note-editor{padding:18px 16px calc(18px + env(safe-area-inset-bottom))}.note-editor__title{font-size:1.55rem}.note-editor__content{min-height:50dvh;font-size:1rem;line-height:1.75}.sidebar{width:min(100vw - 48px,320px)}.empty-state__title{font-size:1.35rem}}