:root{
  --bg:#F3F3F0;--surface:#FFFFFF;--surface-2:#EBEBE6;--ink:#17191D;--ink-2:#555B63;--ink-3:#8A9099;--line:#DADBD6;
  --accent:#F5C84B;--accent-ink:#17191D;--accent-soft:#FBEFC2;--danger:#C2412D;--focus:#2F6FEB;
  --tint-bg-l:91%;--tint-fg-l:30%;--tint-line-l:70%;--tint-bg-m:1;--tint-fg-m:.6;--tint-line-m:.5;
  --sans:"Instrument Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --h:0;--s:0%;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#141619;--surface:#1B1E22;--surface-2:#22262B;--ink:#ECECE7;--ink-2:#AEB3B9;--ink-3:#7E848C;--line:#2F343A;
    --accent:#F2C94C;--accent-ink:#17191D;--accent-soft:#3B3315;--danger:#E5604A;--focus:#7AA2F7;
    --tint-bg-l:20%;--tint-fg-l:76%;--tint-line-l:40%;--tint-bg-m:.45;--tint-fg-m:.7;--tint-line-m:.5;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#141619;--surface:#1B1E22;--surface-2:#22262B;--ink:#ECECE7;--ink-2:#AEB3B9;--ink-3:#7E848C;--line:#2F343A;
  --accent:#F2C94C;--accent-ink:#17191D;--accent-soft:#3B3315;--danger:#E5604A;--focus:#7AA2F7;
  --tint-bg-l:20%;--tint-fg-l:76%;--tint-line-l:40%;--tint-bg-m:.45;--tint-fg-m:.7;--tint-line-m:.5;
  color-scheme:dark;
}
.tinted{--tint-bg:hsl(var(--h) calc(var(--s) * var(--tint-bg-m)) var(--tint-bg-l));--tint-fg:hsl(var(--h) calc(var(--s) * var(--tint-fg-m)) var(--tint-fg-l));--tint-line:hsl(var(--h) calc(var(--s) * var(--tint-line-m)) var(--tint-line-l))}
html{height:100%;scroll-padding-top:env(safe-area-inset-top,0px)}
body{margin:0;height:100%;background:var(--bg);color:var(--ink);font:15px/1.5 var(--sans);-webkit-text-size-adjust:100%;overflow:hidden}
*,*::before,*::after{box-sizing:inherit}
[hidden]{display:none!important}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer;touch-action:manipulation}
.it,.doc h3,.label,.chip,.dchip,.tabs button,.sheet-item,.switch,.item{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}

#app{height:100%;display:flex;flex-direction:column;overflow:hidden}
.topbar{flex:none;display:flex;align-items:center;gap:8px;height:52px;padding:0 10px 0 8px;border-bottom:1px solid var(--line);background:var(--bg)}
.brand{flex:1;min-width:0;font-weight:650;font-size:16px;letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-left:4px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:0;border-radius:9px;background:transparent;color:var(--ink-2);flex:none}
.icon-btn:hover{background:var(--surface-2);color:var(--ink)}
.icon-btn svg{width:20px;height:20px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 14px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--ink);font-weight:500;white-space:nowrap;flex:none}
.btn:hover{border-color:var(--ink-3)}
.btn:disabled{opacity:.5;cursor:default;border-color:var(--line)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:650;padding:0 18px}
.btn.primary:hover{filter:brightness(.97)}
.btn.small{height:32px;padding:0 12px;font-size:13px}
.btn svg{width:16px;height:16px}

.body{flex:1;min-height:0;display:flex}
.sidebar{width:280px;flex:none;display:flex;flex-direction:column;border-right:1px solid var(--line);background:var(--bg)}
.sidebar-top{flex:none;padding:12px 12px 8px}
#search{width:100%;height:36px;border:1px solid var(--line);border-radius:9px;background:var(--surface);padding:0 12px;outline:none;-webkit-appearance:none;appearance:none}
#search:focus{border-color:var(--ink-3)}
#search::placeholder{color:var(--ink-3)}
.history{flex:1;min-height:0;overflow:auto;padding:0 8px 8px}
.group{margin:12px 0 4px;padding:0 8px;font-size:12px;font-weight:600;color:var(--ink-3)}
.item{display:flex;align-items:center;gap:8px;width:100%;text-align:left;border:0;background:transparent;border-radius:8px;padding:8px}
.item:hover{background:var(--surface-2)}
.item.active{background:var(--surface);box-shadow:inset 0 0 0 1px var(--line)}
.item .ic{flex:none;width:20px;text-align:center;font-size:14px;color:var(--ink-3)}
.item .t{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500}
.item .when{flex:none;font-size:12px;color:var(--ink-3)}
.empty-list{padding:22px 12px;color:var(--ink-3);font-size:14px;line-height:1.45}
.sidebar-foot{flex:none;padding:12px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-2)}
.hint{margin:10px 0 0;font-size:12px;color:var(--ink-3);line-height:1.4}
.foot-row{display:flex;gap:8px}
.backdrop{display:none}

.editor{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--surface)}
.title-row{flex:none;display:flex;align-items:center;gap:10px;padding:14px 16px 4px}
#title{flex:1;min-width:0;border:0;background:transparent;font-size:21px;font-weight:650;letter-spacing:-.01em;outline:none;padding:0}
#title::placeholder{color:var(--ink-3);font-weight:500}
.meta{font-size:12px;color:var(--ink-3);white-space:nowrap}
.chips{flex:none;display:flex;gap:6px;padding:8px 16px 10px;overflow-x:auto;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;height:32px;padding:0 13px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:13px;font-weight:500}
.chip:hover{border-color:var(--ink-3);color:var(--ink)}
.chip.on{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:650}
.tabs{flex:none;display:flex;gap:18px;padding:0 16px;border-bottom:1px solid var(--line)}
.tabs button{border:0;background:transparent;padding:8px 0 7px;font-size:13px;font-weight:600;color:var(--ink-3);border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs button.on{color:var(--ink);border-bottom-color:var(--accent)}
.panes{flex:1;min-height:0;display:flex}
.pane{flex:1;min-width:0;min-height:0;display:flex;flex-direction:column;overflow:auto}
.pane.raw{background:var(--surface-2)}
.pane.formatted{background:var(--surface)}
.panes[data-view="raw"] .pane.formatted,.panes[data-view="raw"] .pane.design{display:none}
.panes[data-view="formatted"] .pane.raw,.panes[data-view="formatted"] .pane.design{display:none}
.panes[data-view="design"] .pane.raw,.panes[data-view="design"] .pane.formatted{display:none}
#raw{flex:1;width:100%;border:0;resize:none;background:transparent;padding:16px;font:14px/1.6 var(--mono);outline:none;color:var(--ink)}
#raw::placeholder{color:var(--ink-3)}
.pane-head{flex:none;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:14px 16px 0}
.label{display:inline-block;font-size:12px;font-weight:600;color:var(--tint-fg);background:var(--tint-bg);border-radius:999px;padding:3px 10px}
.doc{padding:6px 16px 10px;max-width:66ch;font-size:15px;line-height:1.5}
.doc h3{margin:18px 0 6px;font-size:13px;font-weight:650;letter-spacing:.01em;color:var(--tint-fg)}
.doc h3:first-child{margin-top:12px}
.it{display:flex;align-items:flex-start;gap:10px;margin:0 -8px;border-radius:8px}
.it .dot{flex:none;width:5px;height:5px;border-radius:50%;background:var(--ink-3);margin:12px 0 0 11px}
.it .num{flex:none;min-width:22px;margin:6px 0 0 4px;text-align:right;font-size:14px;font-weight:650;color:var(--tint-fg);font-variant-numeric:tabular-nums}
.it .box{flex:none;width:17px;height:17px;margin:9px 0 0 5px;border:1.5px solid var(--tint-line);border-radius:5px;background:transparent;padding:0;display:inline-flex;align-items:center;justify-content:center;color:transparent}
.it .box svg{width:11px;height:11px}
.it.done .box{background:var(--tint-fg);border-color:var(--tint-fg);color:var(--surface)}
.it.done .txt{color:var(--ink-3);text-decoration:line-through;text-decoration-color:var(--line)}
.it .txt{flex:1;min-width:0;text-align:left;border:0;background:transparent;padding:6px 8px;border-radius:8px;line-height:1.5;color:var(--ink);font-weight:400}
.it .txt:hover{background:var(--surface-2)}
.it .txt:active{background:var(--accent-soft)}
.owner{display:inline-block;margin-left:8px;font-size:12px;font-weight:600;color:var(--tint-fg);background:var(--tint-bg);border-radius:999px;padding:1px 8px;vertical-align:1px}
.doc-hint{margin:0;padding:10px 16px 24px;font-size:12px;color:var(--ink-3)}
.aside-toggle{display:inline-block;margin:22px 0 0;border:0;background:transparent;color:var(--ink-3);font-size:13px;font-weight:600;padding:4px 0;text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:3px}
.aside-toggle:hover{color:var(--ink)}
.doc h3.aside-head{color:var(--ink-3)}
.aside-note{margin:0 0 6px;font-size:12px;color:var(--ink-3)}
.it.aside .txt{color:var(--ink-3)}
.it.aside .dot{background:var(--line)}
.pane.design{background:var(--surface-2)}
.pane.design .pane-head{padding:10px 16px 0;gap:10px}
.dchips{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;flex:1;min-width:0;padding-bottom:2px}
.dchips::-webkit-scrollbar{display:none}
.dchip{flex:none;display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 12px 0 8px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:13px;font-weight:500}
.dchip .sw{width:14px;height:14px;border-radius:50%;box-shadow:inset 0 0 0 1px rgba(0,0,0,.14)}
.dchip.on{border-color:var(--ink);color:var(--ink);font-weight:650}
.dwrap{flex:1;min-height:0;overflow:auto;padding:12px 16px 20px}
#dimg{display:block;width:100%;max-width:540px;height:auto;border-radius:12px;box-shadow:0 10px 40px rgba(0,0,0,.18);margin:0 auto}
.dactions{flex:none;display:flex;align-items:center;gap:8px;padding:10px 16px;border-top:1px solid var(--line);background:var(--surface);flex-wrap:wrap}
.dactions .meta{flex-basis:100%}
.switch{display:none;flex:none;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface)}
.switch button{border:0;background:transparent;padding:5px 11px;font-size:13px;color:var(--ink-2)}
.switch button.on{background:var(--accent-soft);color:var(--ink);font-weight:600}
.empty{padding:28px 16px;color:var(--ink-3);max-width:40ch;line-height:1.5}
.empty b{color:var(--ink-2);font-weight:600}
.actions{flex:none;display:flex;align-items:center;gap:8px;padding:10px 16px;border-top:1px solid var(--line);background:var(--surface);overflow-x:auto;scrollbar-width:none}
.actions::-webkit-scrollbar{display:none}
.spacer{flex:1}
.toast{position:fixed;left:50%;bottom:calc(74px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:9px 14px;border-radius:9px;font-size:14px;font-weight:500;z-index:60;max-width:min(92vw,420px);text-align:center;box-shadow:0 6px 24px rgba(0,0,0,.18)}

.sheet-backdrop{position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.35)}
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:45;background:var(--surface);border-radius:16px 16px 0 0;padding:14px 14px calc(14px + env(safe-area-inset-bottom,0px));box-shadow:0 -10px 40px rgba(0,0,0,.2);max-height:80%;overflow:auto;animation:up .18s ease-out}
@keyframes up{from{transform:translateY(24px);opacity:.6}to{transform:none;opacity:1}}
.sheet-title{font-size:13px;font-weight:600;color:var(--ink-3);padding:4px 6px 8px}
.sheet-item{display:flex;align-items:center;justify-content:space-between;width:100%;text-align:left;border:0;background:transparent;border-radius:9px;padding:11px 12px;font-size:15px}
.sheet-item:hover{background:var(--surface-2)}
.sheet-item.on{background:var(--accent-soft);font-weight:600}
.sheet-item.danger{color:var(--danger)}
.sheet-row{display:flex;gap:8px;padding:10px 4px 0;border-top:1px solid var(--line);margin-top:8px;flex-wrap:wrap}
.sheet textarea{width:100%;min-height:96px;border:1px solid var(--line);border-radius:9px;padding:10px 12px;resize:vertical;background:var(--bg);outline:none;margin:4px 0 10px}
.sheet textarea:focus{border-color:var(--ink-3)}
.sheet label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);padding:8px 4px 2px}
.sheet .help{font-size:12px;color:var(--ink-3);padding:0 4px 8px;line-height:1.4;margin:0}
.check{color:var(--ink-2);font-size:13px}

@media (max-width:879px){
  .sidebar{position:fixed;top:0;bottom:0;left:0;z-index:30;width:min(84vw,320px);transform:translateX(-100%);transition:transform .22s ease;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
  .sidebar.open{transform:none;box-shadow:0 0 40px rgba(0,0,0,.25)}
  .backdrop{display:block;position:fixed;inset:0;z-index:25;background:rgba(0,0,0,.35);opacity:0;pointer-events:none;transition:opacity .22s}
  .backdrop.show{opacity:1;pointer-events:auto}
}
@media (min-width:880px){
  #menuBtn{display:none}
  .tabs{display:none}
  .panes{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border-top:1px solid var(--line)}
  .panes .pane.raw{display:flex!important}
  .panes:not([data-view="design"]) .pane.formatted{display:flex!important}
  .panes[data-view="design"] .pane.design{display:flex!important}
  .switch{display:inline-flex}
  .title-row{padding:18px 24px 4px}
  .chips{padding:8px 24px 12px}
  .doc,.pane-head,.empty,.doc-hint,.dwrap{padding-left:22px;padding-right:22px}
  .dactions{padding-left:22px}
  #raw{padding:18px 22px}
  .actions{padding:10px 24px}
  .sheet{left:50%;right:auto;bottom:auto;top:50%;transform:translate(-50%,-50%);width:min(92vw,440px);border-radius:14px;padding:14px;max-height:85vh;animation:pop .15s ease-out}
  @keyframes pop{from{transform:translate(-50%,-50%) scale(.97);opacity:.6}to{transform:translate(-50%,-50%);opacity:1}}
}
@media (prefers-reduced-motion:reduce){
  .sidebar,.backdrop{transition:none}
  .sheet{animation:none}
}