:root{--paper:#fffefa;--bg:#f6f5f1;--ink:#30332f;--muted:#8b8e86;--line:#e5e6de;--accent:#526b52;--wash:#edf1e9;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;border-radius:6px;transition:background .15s,color .15s}button:hover{background:#e9ece4}button:focus-visible{outline:2px solid #8aa17b;outline-offset:3px}[hidden]{display:none!important}.topbar{height:74px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:var(--paper);gap:16px}.brand{display:flex;align-items:center;gap:11px;text-align:left;font-weight:600;padding:0}.brand-mark{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--accent);background:var(--accent);color:white;font-family:serif;font-size:23px;border-radius:3px 10px 3px 3px}.brand small{display:block;font-size:9px;letter-spacing:2.2px;margin-top:3px;color:var(--muted)}.document-name{display:flex;align-items:center;gap:9px;font-size:13px;max-width:35%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-dot{height:12px;width:10px;flex-shrink:0;border:1px solid #a5aa9c;border-radius:2px}#dirty{color:#9c8762;font-size:16px}.file-actions{display:flex;gap:10px}.file-actions button{padding:9px 13px;font-size:12px;border:1px solid var(--line)}kbd{font-family:inherit;font-size:10px;color:var(--muted);margin-left:10px}.file-actions .primary{background:var(--accent);color:#fff;border-color:var(--accent)}.primary kbd{color:#d4ddcd}.file-actions .primary:hover{background:#415940}.workspace{display:flex;height:calc(100dvh - 74px)}.sidebar{width:242px;flex-shrink:0;border-right:1px solid var(--line);padding:31px 22px;display:flex;flex-direction:column;gap:24px;overflow:auto}.sidebar-heading{font-size:12px;font-weight:600;display:flex;justify-content:space-between}.sidebar-heading span{font-size:9px;letter-spacing:1.1px;color:var(--muted);font-weight:400}#outline{display:flex;flex-direction:column;gap:5px}#outline button{font-size:12px;text-align:left;padding:9px 11px;line-height:1.5;border-left:2px solid transparent;border-radius:0 5px 5px 0;color:#747a6d}#outline button.active{color:var(--accent);background:#e9eee4;border-left-color:var(--accent);font-weight:600}#outline .empty{font-size:12px;color:var(--muted);line-height:1.8}.sidebar-note{margin-top:auto;padding:40px 12px 0;font-size:12px;color:var(--muted)}.tiny-rule{display:block;width:25px;height:1px;background:#afb9a4;margin-bottom:22px}.sidebar-note strong{font-family:serif;font-size:17px;color:#606a59;font-weight:400}.sidebar-note p{font-size:11px;line-height:2.1;margin:13px 0 20px}.local-label{font-size:10px;color:#8c9384}.main{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--paper)}.toolbar{height:57px;min-height:57px;border-bottom:1px solid var(--line);padding:0 30px;display:flex;align-items:center;gap:14px}.toolbar-group{display:flex;align-items:center;gap:2px;border-right:1px solid var(--line);padding-right:14px}.toolbar button{height:29px;min-width:30px;padding:3px 8px;font-family:Georgia,"Times New Roman",serif;font-size:16px;color:#67705f}.toolbar button span{font-family:sans-serif;font-size:11px;margin-left:2px}.toolbar-end{margin-left:auto;display:flex;gap:10px}.toolbar-end button{font-family:inherit;font-size:11px}#source-toggle[aria-pressed=true]{background:var(--wash);color:var(--accent)}#help-toggle{border:1px solid var(--line);border-radius:50%;min-width:23px;width:23px;height:23px;padding:0;color:var(--muted)}.help{font-size:12px;padding:16px 32px;background:var(--wash);line-height:1.9;border-bottom:1px solid var(--line)}.help small{color:#68735e}.paper-scroll{overflow:auto;flex:1;padding:44px max(30px,calc((100% - 780px)/2)) 35px;scroll-behavior:smooth}.paper-label{display:flex;justify-content:space-between;color:#a1a393;font-size:10px;letter-spacing:1.3px;padding:0 0 26px;border-bottom:1px solid #ebede5;margin-bottom:32px}.paper-label span:first-child{letter-spacing:2px}#editor{outline:none;min-height:55vh;font-family:Georgia,"Noto Serif CJK SC","Songti SC",SimSun,serif;font-size:16px;line-height:1.95;overflow-wrap:anywhere;caret-color:var(--accent);padding:0 0 30px}#editor .block{white-space:pre-wrap;min-height:1.95em;position:relative;outline:none;border-radius:2px}#editor .block::selection,#editor ::selection{background:#dce7d5}#editor .heading{font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;font-weight:600;line-height:1.5;margin:20px 0 10px;letter-spacing:-.5px}#editor .heading[data-level="1"]{font-size:34px;margin:0 0 16px}#editor .heading[data-level="2"]{font-size:23px;margin-top:18px}#editor .heading[data-level="3"]{font-size:19px}#editor .heading[data-level="4"],#editor .heading[data-level="5"],#editor .heading[data-level="6"]{font-size:17px}#editor .blank{min-height:12px;height:12px;font-size:10px;line-height:12px}#editor .blank.active{min-height:25px;height:25px}#editor .quote{border-left:3px solid #acb59b;color:#748069;padding:6px 18px;background:#f5f6ef}#editor .list{padding-left:22px}#editor .list:before{position:absolute;left:4px;content:"•";color:var(--accent)}#editor .list[data-ordered="true"]:before{content:attr(data-number) ".";font-size:13px;left:0}#editor .list.active:before{display:none}#editor .list.active{padding-left:0}#editor .code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;font-size:13px;line-height:1.8;padding:16px 20px;background:#f1f3ec;border:1px solid #e3e8da;border-radius:6px;tab-size:2;margin:10px 0;color:#506246}#editor code{font-family:Consolas,monospace;font-size:.86em;background:#edf0e7;border-radius:3px;padding:2px 4px;color:#63734f}#editor strong{font-weight:700;color:#394d34}#editor .syntax{display:none}#editor .active .syntax{display:inline;color:#9ca691;font-weight:400;font-size:.85em}#editor .code.active .syntax{font-size:1em}#editor .code .fence{display:none}#editor .code.active .fence{display:inline}#editor .quote.active{padding-left:12px}#source{width:100%;resize:none;border:none;outline:none;background:transparent;min-height:55vh;font:14px/1.9 Consolas,monospace;color:#4a5940;padding:0;tab-size:2;overflow:hidden}.page-end{display:flex;align-items:center;gap:15px;color:#afb29f;margin:45px auto 15px;max-width:400px;font-size:10px;letter-spacing:1px}.page-end i{font-style:normal;white-space:nowrap}.page-end span{height:1px;background:var(--line);flex:1}footer{min-height:36px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 23px;font-size:10px;color:#8f9588;gap:12px}footer>div{display:flex;align-items:center;gap:17px}.status-dot{height:5px;width:5px;background:#829873;border-radius:50%;margin-right:-10px}.mvp{padding-left:15px;border-left:1px solid var(--line)}#toast{position:fixed;bottom:55px;left:50%;transform:translateX(-50%);padding:10px 18px;border-radius:6px;background:#3f503a;color:white;font-size:12px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:30}#toast.show{opacity:1}body.no-sidebar .sidebar{display:none}@media(min-width:1500px){.paper-scroll{padding-top:60px}}@media(max-width:850px){.sidebar{width:190px;padding:28px 15px}.topbar{padding:0 18px}.toolbar{padding:0 20px;gap:8px}.toolbar-group{padding-right:8px}.paper-scroll{padding:30px}.file-actions kbd{display:none}}@media(max-width:640px){.topbar{height:62px;padding:0 12px;gap:8px}.brand small{display:none}.brand-mark{height:30px;width:30px;font-size:20px}.brand>span:last-child{display:none}.workspace{height:calc(100dvh - 62px)}.sidebar{display:none}.document-name{max-width:38%;font-size:12px}.file-actions{gap:5px}.file-actions button{padding:8px;font-size:11px}.toolbar{padding:0 10px;gap:5px;height:49px;min-height:49px}.toolbar-group{gap:0;padding-right:5px}.toolbar button{min-width:25px;padding:3px 5px}.toolbar button span{display:none}.toolbar-end{gap:4px}.paper-scroll{padding:24px 22px}.paper-label{font-size:8px;margin-bottom:25px}.paper-label span:first-child{letter-spacing:0}#editor{font-size:15px}#editor .heading[data-level="1"]{font-size:28px}#editor .heading[data-level="2"]{font-size:21px}footer{padding:0 12px}footer>div{gap:10px}footer .mvp{display:none}.help{padding:12px 20px}.page-end{font-size:9px}body.no-sidebar .sidebar{display:none}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* Preview 02: useful tools, still a quiet page. */
button:disabled{opacity:.35;cursor:default}button:disabled:hover{background:none}.document-name{padding:8px 10px;min-width:0}.document-name #filename{overflow:hidden;text-overflow:ellipsis}.edition{margin-top:32px;border-top:1px solid var(--line);padding-top:14px;font-size:8px;letter-spacing:1.5px;display:flex;justify-content:space-between}.edition span{font-size:12px;letter-spacing:0}.toolbar{padding:0 22px;gap:9px;overflow-x:auto;overflow-y:hidden;flex-shrink:0}.toolbar-group{padding-right:9px;gap:0;flex-shrink:0}.toolbar-end{gap:4px;flex-shrink:0}.toolbar button{min-width:28px;padding:3px 6px;white-space:nowrap}.toolbar button[aria-pressed=true]{background:var(--wash);color:var(--accent)}#editor a{color:var(--accent);text-decoration:underline;text-decoration-color:#aab89e;text-underline-offset:4px}#editor del{color:var(--muted)}#editor .task:before{display:none}.task-box{position:absolute;left:0;top:.6em;width:15px;height:15px;min-width:15px;border:1.4px solid #a5b09a;border-radius:3px;padding:0;line-height:1;z-index:1}.task-box[aria-checked=true]{background:var(--accent);border-color:var(--accent)}.task-box[aria-checked=true]:after{content:"";position:absolute;width:7px;height:4px;border-left:1.5px solid var(--paper);border-bottom:1.5px solid var(--paper);transform:rotate(-45deg);left:3px;top:3px}#editor .task.active .task-box{display:none}#editor .task.done:not(.active) .task-body{text-decoration:line-through;text-decoration-color:#bbc4b1;color:var(--muted)}.find-panel{padding:13px 24px;border-bottom:1px solid var(--line);background:var(--bg);flex-shrink:0}.find-row{display:flex;align-items:center;gap:8px;margin:4px 0;flex-wrap:wrap;font-size:12px}.find-row>input{width:240px;max-width:45%;height:31px;border:1px solid var(--line);border-radius:5px;background:var(--paper);padding:5px 10px;color:var(--ink);font:inherit;outline:none}.find-row>input:focus{border-color:var(--accent)}.find-row button{padding:6px 9px;border:1px solid var(--line);font-size:11px;background:var(--paper)}#find-count{color:var(--muted);min-width:46px;font-variant-numeric:tabular-nums;text-align:center}.case-label{display:flex;align-items:center;gap:3px;font-size:11px;white-space:nowrap;color:var(--muted)}input[type=checkbox]{accent-color:var(--accent)}.find-row small{color:var(--muted);font-size:10px;margin-left:4px}#find-close{margin-left:auto}.focus-mode .topbar,.focus-mode .toolbar,.focus-mode .sidebar,.focus-mode .help,.focus-mode .find-panel,.focus-mode .paper-label{display:none!important}.focus-mode .workspace{height:100dvh}.focus-mode .paper-scroll{padding-top:90px}.focus-mode #editor{max-width:760px;margin:auto}.focus-mode footer{border-top-color:transparent}.focus-mode #source{max-width:760px;display:block;margin:auto}#exit-focus{position:fixed;right:24px;top:20px;padding:9px 13px;background:var(--bg);border:1px solid var(--line);font-size:11px;color:var(--muted);z-index:5;opacity:.65}#exit-focus:hover,#exit-focus:focus{opacity:1}dialog{border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink);padding:28px;max-width:calc(100vw - 32px);width:390px;box-shadow:0 20px 80px #0002}dialog::backdrop{background:#26312255;backdrop-filter:blur(3px)}dialog h2{font-size:20px;margin:0 0 12px}dialog p{font-size:12px;color:var(--muted);line-height:1.8}dialog input{width:100%;padding:10px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:inherit;border-radius:5px;margin:10px 0 20px}.dialog-actions{display:flex;justify-content:flex-end;gap:10px}.dialog-actions button{padding:9px 17px;border:1px solid var(--line)}.dialog-actions .primary{background:var(--accent);color:var(--paper)}
:root[data-theme=dark]{--paper:#252b24;--bg:#20251f;--ink:#d7ddcf;--muted:#9ba792;--line:#3a4336;--accent:#afc69f;--wash:#333f2c}html[data-theme=dark] button:hover{background:#34412d}html[data-theme=dark] .file-actions .primary{background:#59764a;color:#f5f7f1;border-color:#59764a}html[data-theme=dark] .brand-mark{background:#526b45;color:#f0f5e9;border-color:#789969}html[data-theme=dark] #outline button{color:#a4b299}html[data-theme=dark] #outline button.active{background:#34412e;color:#c1d8b0}html[data-theme=dark] .sidebar-note strong{color:#b8c5aa}html[data-theme=dark] .help small{color:#b3c2a4}html[data-theme=dark] #editor .quote{background:#2d3529;color:#b4c2a7;border-left-color:#748969}html[data-theme=dark] #editor .code{background:#1f251e;border-color:#3b4933;color:#becfb1}html[data-theme=dark] #editor code{background:#35412c;color:#c8d9ba}html[data-theme=dark] #editor strong{color:#d0e4c0}html[data-theme=dark] #source{color:#c4d5b6}html[data-theme=dark] .paper-label{border-color:var(--line);color:#8f9c83}html[data-theme=dark] #editor ::selection{background:#4e6341}html[data-theme=dark] .status-dot{background:#9cba82}html[data-theme=dark] #toast{background:#d2e2c2;color:#25301e}
@media(max-width:1100px){.toolbar{gap:5px;padding:0 13px}.toolbar-group{padding-right:5px}.toolbar-end{gap:1px}.toolbar button{min-width:26px;padding:3px 5px}.sidebar{width:206px}.toolbar-end button{font-size:11px}}@media(max-width:850px){.sidebar{width:175px}.toolbar{flex-wrap:wrap;height:auto;min-height:72px;padding:8px 14px;gap:6px}.toolbar-end{margin-left:auto}.paper-scroll{padding:28px}.find-panel{padding:10px 14px}.find-row>input{max-width:42%}.find-row small{display:none}}@media(max-width:640px){.topbar{gap:5px}.document-name{max-width:35%;padding:6px 2px;gap:5px}.file-actions button{padding:8px 7px}.file-actions{gap:4px}.toolbar{min-height:79px;padding:6px 10px;gap:4px;align-content:center}.toolbar button{height:29px;min-width:27px;padding:3px 6px}.toolbar-group{padding-right:3px}.toolbar-end{width:100%;justify-content:flex-end;border-top:1px solid var(--line);padding-top:4px}.toolbar-end button{padding:3px 10px}.sidebar{display:none}.mobile-outline:not(.no-sidebar) .sidebar{display:flex;position:absolute;left:0;top:62px;bottom:0;width:230px;background:var(--bg);z-index:10;box-shadow:15px 0 40px #0002}.paper-scroll{padding:26px 22px}#readtime,#blockcount{display:none}.find-row{gap:5px}.find-row>input{width:170px;max-width:46%}.case-label{font-size:10px}.find-row button{padding:6px}.find-panel{padding:8px 10px}.focus-mode .paper-scroll{padding-top:75px}#exit-focus{right:16px;top:16px}.help{max-height:36vh;overflow:auto}#toast{max-width:90vw;text-align:center;width:max-content}.page-end i{white-space:normal;text-align:center}.sidebar-note{padding-top:24px}}

@media(min-width:360px) and (max-width:640px){.toolbar button{min-width:24px;padding:3px 4px}.toolbar-end button{padding:3px 10px}.toolbar-group{gap:0}}

/* Preview 03: complex blocks keep a lossless source, and a separate safe view. */
#editor .block-source{display:none}#editor .rich-block.active>.block-source{display:block;white-space:pre-wrap;font:14px/1.85 Consolas,"Liberation Mono",monospace;color:var(--ink);background:var(--wash);padding:10px 14px;border-radius:5px;overflow-wrap:anywhere}#editor .rich-block.active>.block-preview{display:none}#editor .block-preview{white-space:normal;cursor:text;min-height:1.95em;overflow-x:auto;max-width:100%}#editor .block-preview p{margin:0 0 .65em}#editor .block-preview p:last-child{margin-bottom:0}#editor .block-preview table{border-collapse:collapse;width:100%;font-family:Inter,"PingFang SC",sans-serif;font-size:14px;line-height:1.8;margin:10px 0;border:1px solid var(--line)}#editor .block-preview th,#editor .block-preview td{padding:11px 16px;border:1px solid var(--line);min-width:85px}#editor .block-preview th{background:var(--wash);font-weight:600;color:var(--accent)}#editor .block-preview tr:nth-child(even) td{background:color-mix(in srgb,var(--wash) 35%,var(--paper))}#editor .block-preview hr{border:0;border-top:1px solid #adb99f;margin:24px 0}#editor .hr{min-height:30px}#editor .math{padding:8px 0;margin:10px 0}#editor .katex-display{overflow-x:auto;overflow-y:hidden;padding:8px 0;margin:.5em 0}#editor .katex{font-size:1.12em}#editor .katex .base{white-space:nowrap}#editor .block-preview details{padding:13px 18px;border:1px solid var(--line);border-radius:5px;background:var(--wash)}#editor .block-preview summary{cursor:pointer;font-family:Inter,"PingFang SC",sans-serif;font-size:14px;color:var(--accent)}#editor .block-preview details[open] summary{margin-bottom:10px}#editor .block-preview mark{background:#e6e8ba;color:#434932;padding:1px 4px;border-radius:2px}#editor .block-preview kbd{font:12px Consolas,monospace;border:1px solid var(--line);background:var(--bg);padding:2px 5px;margin:0;color:var(--ink)}#editor .math-error{display:inline-block;color:#a34c3e;background:#a34c3e0c;border-bottom:1px dashed #a34c3e;font:13px/1.8 Consolas,monospace;white-space:pre-wrap}#editor .safe-empty{color:var(--muted);font:12px/1.8 sans-serif}#editor .list{margin-left:var(--indent,0px)}#editor .list.active{margin-left:0}#editor .list .block-preview ul,#editor .list .block-preview ol{list-style:none;padding:0;margin:0}#editor .list .block-preview li>p{margin:0}.insert-tools button{font-family:inherit;font-size:11px}.toolbar{flex-wrap:wrap;height:auto;min-height:68px;padding-top:7px;padding-bottom:7px}.toolbar-end{margin-left:auto}.toolbar-group{max-width:100%}#editor .table{margin:8px 0}#editor .html{margin:8px 0}@media(max-width:640px){.insert-tools{border-right:0}.toolbar{min-height:112px}.toolbar-end{width:100%}#editor .block-preview table{font-size:12px}#editor .block-preview th,#editor .block-preview td{padding:8px 10px;min-width:70px}#editor .rich-block.active>.block-source{font-size:12px;padding:9px}#editor .list{max-width:calc(100% - var(--indent,0px))}#editor .list.active{max-width:100%}}

/* Android / touch: viewport follows the keyboard, never the document height. */
#outline-scrim{display:none}
.format-tools{display:contents}
#focus-toggle{font-family:inherit;color:var(--accent);font-weight:600;background:var(--wash)}
.focus-mode footer,.focus-mode .page-end,.focus-mode #outline-scrim{display:none!important}
#exit-focus{color:var(--ink);opacity:1;min-height:44px;box-shadow:0 2px 8px #0001}
@media(max-width:640px),(max-width:960px) and (max-height:480px){
  html,body{height:100%;overflow:hidden;overscroll-behavior:none}
  body{position:relative;top:var(--viewport-top,0px);height:var(--app-height,100dvh);display:flex;flex-direction:column}
  .topbar{height:auto;min-height:56px;flex-shrink:0;flex-wrap:nowrap;padding:calc(6px + env(safe-area-inset-top)) max(10px,env(safe-area-inset-right)) 6px max(10px,env(safe-area-inset-left));gap:4px}
  .brand small,.brand>span:last-child{display:none}
  .brand{min-width:44px;min-height:44px;justify-content:center}
  .document-name{flex:1;max-width:none;min-height:44px;font-size:12px}
  .file-actions{gap:2px;flex-shrink:0}
  .file-actions button{min-height:44px;padding:8px;font-size:12px}
  .file-actions kbd{display:none}
  .workspace{height:auto;flex:1;min-height:0;position:relative}
  .main{min-height:0}
  .toolbar{height:auto;min-height:0;padding:0;gap:0;display:flex;flex-direction:column;flex-wrap:nowrap;align-items:stretch;overflow:visible;position:relative}
  .format-tools{display:flex;flex-shrink:0;align-items:center;gap:2px;min-width:0;max-width:100%;height:48px;padding:2px 8px;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;touch-action:pan-x}
  .toolbar-group{border-right:1px solid var(--line);padding-right:4px;gap:0}
  .toolbar button{height:44px;min-width:44px;padding:5px 10px}
  /* Both rows participate in layout; no fixed offsets or placeholder gap. */
  .toolbar-end{position:static;flex-shrink:0;min-height:46px;height:auto;width:100%;margin:0;justify-content:flex-end;align-items:center;padding:1px 8px;background:var(--paper);border-top:1px solid var(--line);gap:0}
  #focus-toggle{margin-right:auto}
  .toolbar-end button{min-width:44px;height:44px;padding:5px 10px;font-size:12px}
  #help-toggle{height:44px;width:44px;border:0}
  .paper-scroll{min-height:0;padding:12px max(18px,env(safe-area-inset-right)) 28px max(18px,env(safe-area-inset-left));overscroll-behavior:contain;scroll-padding-block:20px 48px;scroll-behavior:auto}
  .paper-label,.page-end{display:none}
  #editor,#source{font-size:16px;min-height:45vh}
  #editor .heading[data-level="1"]{font-size:28px}
  #editor .code{padding:12px;font-size:13px}
  #editor .block-preview{max-width:100%;overflow-x:auto}
  #editor .task-box::before{content:"";position:absolute;inset:-14px}
  .paper-label{margin-bottom:20px;padding-bottom:16px}
  footer{flex-shrink:0;min-height:32px;padding:6px max(12px,env(safe-area-inset-right)) calc(6px + env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left));gap:6px}
  footer>div{min-width:0;gap:7px}#status{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;max-width:58vw}
  #wordcount{white-space:nowrap}.status-dot{flex-shrink:0;margin-right:0}
  #readtime,#blockcount,footer .mvp{display:none}
  .sidebar{display:none}
  .mobile-outline:not(.no-sidebar) .sidebar{top:0;bottom:0;width:min(290px,82vw);padding-bottom:env(safe-area-inset-bottom);overscroll-behavior:contain}
  .mobile-outline:not(.no-sidebar) .sidebar{display:flex;position:absolute;left:0;background:var(--bg);z-index:10;box-shadow:15px 0 40px #0002}
  .mobile-outline #outline-scrim{display:block;position:absolute;inset:0;background:#101a1266;z-index:9;border-radius:0}
  #outline button{min-height:44px;font-size:14px}
  .find-panel{max-height:45%;overflow:auto}
  .find-row>input{font-size:16px;height:44px;max-width:calc(100% - 145px);flex:1;min-width:100px}
  .find-row button{min-height:44px;min-width:44px}.case-label{min-height:36px}
  .find-row:last-child>input{max-width:100%}.find-row small{display:none}
  dialog{max-height:calc(var(--app-height,100dvh) - 24px);overflow:auto;padding:20px}dialog input{font-size:16px}.dialog-actions button{min-height:44px}
  .focus-mode .workspace{height:auto}.focus-mode .paper-scroll{padding-top:60px}.focus-mode #exit-focus{top:calc(8px + env(safe-area-inset-top));right:max(12px,env(safe-area-inset-right));min-height:44px}
  #exit-focus kbd{display:none}
  #toast{bottom:calc(42px + env(safe-area-inset-bottom));z-index:30}
}
@media(max-width:359px){.file-actions button{padding:6px;font-size:11px}.document-name{font-size:11px}.topbar{padding-left:4px;padding-right:4px}}
@media(max-height:480px) and (max-width:960px){footer{min-height:26px}}
@media(pointer:coarse) and (min-width:641px) and (min-height:481px){.toolbar button{min-height:44px;min-width:44px}.toolbar{min-height:104px}.file-actions button{min-height:44px}#outline button{min-height:44px}}

.touch-indent{display:none}
@media(pointer:coarse),(max-width:640px){.touch-indent{display:flex}}
#editor .code.rich-block:not(.active){padding:0;background:none;border:0}
#editor .block-preview pre{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;font-size:13px;line-height:1.8;white-space:pre;overflow-x:auto;background:#f1f3ec;border:1px solid #e3e8da;border-radius:6px;padding:16px 20px;margin:10px 0;color:#506246;tab-size:2}
#editor .block-preview pre code{font:inherit;background:none;padding:0;color:inherit}
#editor .code.rich-block.active>.block-source{white-space:pre;overflow-x:auto;padding:16px 20px;font-size:13px;line-height:1.8}
#editor .hljs-keyword,#editor .hljs-built_in{color:#7a5d8f}
#editor .hljs-string,#editor .hljs-literal{color:#5f7a45}
#editor .hljs-comment{color:#9aa08f;font-style:italic}
#editor .hljs-number{color:#a05f3c}
#editor .hljs-title,#editor .hljs-function{color:#4a6b7a}
#editor .hljs-attr,#editor .hljs-variable{color:#8a6b3f}
html[data-theme="dark"] #editor .block-preview pre{background:#1f251e;border-color:#3b4933;color:#becfb1}
html[data-theme="dark"] #editor .hljs-keyword,html[data-theme="dark"] #editor .hljs-built_in{color:#c7a9dd}
html[data-theme="dark"] #editor .hljs-string,html[data-theme="dark"] #editor .hljs-literal{color:#a9c98a}
html[data-theme="dark"] #editor .hljs-comment{color:#7c8974}
html[data-theme="dark"] #editor .hljs-number{color:#d9a07a}
html[data-theme="dark"] #editor .hljs-title,html[data-theme="dark"] #editor .hljs-function{color:#9cc4d4}
html[data-theme="dark"] #editor .hljs-attr,html[data-theme="dark"] #editor .hljs-variable{color:#d6bd8a}
/* --- v0.5 footnotes and link reference definitions --- */
#editor .footnote-def,#editor .link-def{font-size:.92em;color:var(--muted);border-left:2px solid var(--line);padding-left:10px;margin:.2em 0}
#editor .footnote-def a[href^="#ink-ref-"],#editor .link-def a{color:var(--accent);text-decoration:none}
#editor sup a[href^="#ink-fn-"]{color:var(--accent);text-decoration:none;font-weight:600;padding:0 .15em}
#editor .block.flash{background:var(--wash);transition:background .5s}
html[data-theme="dark"] #editor .footnote-def,html[data-theme="dark"] #editor .link-def{color:#a9b79e;border-left-color:#3f4b39}
@media (max-width:520px){#editor .footnote-def,#editor .link-def{padding-left:8px}}
#editor .fn-ref a::after,#editor .fn-back::after{content:attr(data-fn)}
#editor .footnote-def .block-preview>a.fn-back{float:left;margin-right:.4em}
#editor sup.fn-ref{vertical-align:super;font-size:.75em;line-height:0}
#editor .fn-ref a,#editor .fn-back{color:var(--accent);text-decoration:none;font-weight:600}
/* --- v0.6 image placeholders --- */
#editor .ink-image{display:inline-flex;align-items:center;gap:8px;font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;font-size:12px;color:var(--muted);background:var(--wash);border:1px solid var(--line);border-radius:6px;padding:6px 10px;margin:2px 0;max-width:100%;vertical-align:baseline}
#editor .ink-image-inner{display:inline-flex;align-items:center;gap:7px;min-width:0;overflow:hidden}
#editor .ink-image-icon{width:14px;height:14px;flex-shrink:0;border:1.4px solid #a5b09a;border-radius:3px;position:relative}
#editor .ink-image-icon:before{content:"";position:absolute;inset:3px;background:#a5b09a;border-radius:1px;clip-path:polygon(0 78%,30% 40%,52% 62%,100% 18%,100% 100%,0 100%)}
#editor .ink-image-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:320px}
#editor .ink-image-note{font-size:11.5px;color:var(--muted)}
#editor .ink-image-loading{opacity:.75}
#editor .ink-image-error{cursor:pointer;border-color:#b08a6b;color:#8f6f4e;background:#f6f1ea}
#editor .ink-image .ink-image-load{font-family:inherit;font-size:11.5px;border:1px solid var(--accent);color:var(--accent);padding:3px 10px;border-radius:5px;background:var(--paper);margin-left:2px;flex-shrink:0}
#editor .ink-image .ink-image-load:hover{background:var(--accent);color:var(--paper)}
#editor .ink-image-ready{display:block;max-width:100%;background:none;border:0;padding:0;margin:8px 0}
#editor .ink-image-ready img{max-width:100%;height:auto;display:block;border-radius:4px;border:1px solid var(--line)}
html[data-theme="dark"] #editor .ink-image-error{border-color:#6b5a48;color:#c4a98a;background:#332e26}

/* Preview 09: on pointer devices focus mode keeps the toolbar; the outline peeks from the left edge.
   Width-gated so narrow windows (and the viewport-based mobile simulation) keep the touch layout. */
#outline-peek{display:none}
@media(hover:hover) and (pointer:fine) and (min-width:641px){
  .focus-mode .toolbar{display:flex!important}
  .focus-mode #exit-focus{display:none}
  .focus-mode .find-panel:not([hidden]){display:block!important}
  .focus-mode .help:not([hidden]){display:block!important}
  .focus-mode .paper-scroll{padding-top:40px}
  .focus-mode .sidebar{display:flex!important;position:fixed;left:0;top:0;bottom:0;width:240px;z-index:6;background:var(--bg);box-shadow:15px 0 40px #0002;transform:translateX(-100%);transition:transform .22s ease}
  .focus-mode.outline-peek .sidebar,.focus-mode.outline-pinned .sidebar{transform:none}
  .focus-mode #outline-peek{display:flex;position:fixed;left:0;top:50%;transform:translateY(-50%);z-index:7;width:22px;height:56px;align-items:center;justify-content:center;padding:0;border:1px solid var(--line);border-left:0;border-radius:0 7px 7px 0;background:var(--bg);color:var(--muted);font-size:13px;box-shadow:2px 2px 10px #0001}
  .focus-mode #outline-peek:hover{color:var(--accent)}
  .focus-mode #outline-peek[aria-pressed=true]{background:var(--wash);color:var(--accent);border-color:var(--accent)}
}
.syntax-grid{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:12px;line-height:1.7;max-height:58vh;overflow:auto;padding-right:6px}
.syntax-grid h3{grid-column:1/-1;margin:12px 0 0;font-size:10px;letter-spacing:2px;color:var(--accent)}
.syntax-grid h3:first-child{margin-top:0}
.syntax-grid code{font:12px/1.7 Consolas,"Liberation Mono",monospace;background:var(--wash);color:var(--ink);padding:2px 7px;border-radius:4px;white-space:nowrap;align-self:start}
.syntax-grid span{color:var(--muted);align-self:center}

/* Folder panel: read-only import view for the desktop app. */
.panel-tab{font-size:12px;font-weight:600;padding:2px 4px;border-radius:4px;color:var(--muted)}.panel-tab span{font-size:9px;letter-spacing:1.1px;color:var(--muted);font-weight:400}.panel-tab[aria-pressed=true]{color:var(--ink)}#panel-tabs{display:flex;gap:8px;justify-content:space-between;width:100%}#folder-panel{display:flex;flex-direction:column;gap:10px}.folder-bar{display:flex;gap:6px}.folder-bar button{font-size:11px;padding:6px 9px;border:1px solid var(--line);background:var(--paper)}.folder-chips{display:flex;flex-direction:column;gap:4px}.folder-chip{display:flex;align-items:center;gap:4px}.folder-chip>button.chip-name{flex:1;min-width:0;text-align:left;font-size:12px;padding:7px 9px;border-radius:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#747a6d}.folder-chip>button.chip-name.active{color:var(--accent);background:#e9eee4;font-weight:600}.folder-chip>button.chip-name.active:hover{background:#e9eee4}.folder-chip .chip-remove{font-size:12px;color:var(--muted);min-width:22px;height:26px;padding:0;flex-shrink:0}#folder-filter{height:30px;border:1px solid var(--line);border-radius:5px;background:var(--paper);padding:4px 9px;font:inherit;font-size:12px;color:var(--ink);outline:none}#folder-filter:focus{border-color:var(--accent)}#folder-tree{display:flex;flex-direction:column;gap:2px;font-size:12px}.folder-dir{color:var(--muted);font-weight:600;padding:6px 8px 2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.folder-doc{display:flex;align-items:center;gap:2px}.folder-doc>button.doc-name{flex:1;min-width:0;text-align:left;font-size:12px;padding:6px 8px;border-radius:5px;color:#747a6d;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.folder-doc>button.doc-name:hover{color:var(--ink)}.folder-doc>button.doc-name.active{color:var(--accent);background:#e9eee4;font-weight:600}.folder-doc .doc-rename{font-size:11px;color:var(--muted);min-width:24px;height:24px;padding:0;flex-shrink:0;opacity:.6}.folder-doc:hover .doc-rename{opacity:1}.folder-hint{font-size:11px;color:var(--muted);padding:4px 8px}#folder-excluded{font-size:11px;color:var(--muted)}#folder-excluded summary{cursor:pointer;padding:4px 0;color:#9c8762}#folder-excluded ul{margin:6px 0 0;padding-left:16px;line-height:1.7}#folder-excluded li em{font-style:normal;color:#a34c3e}.folder-empty{font-size:11.5px;color:var(--muted);line-height:1.9;margin:4px 0}

/* AI panel: assistant sidebar for desktop app. */
.ai-panel{position:fixed;right:0;top:0;bottom:0;width:340px;background:var(--bg);border-left:1px solid var(--line);display:flex;flex-direction:column;z-index:8;box-shadow:-8px 0 30px #0001}
.ai-panel[hidden]{display:none}
.ai-panel-header{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--line)}
.ai-panel-title{font-size:13px;font-weight:600;letter-spacing:1px;color:var(--ink)}
.ai-panel-close{background:none;border:none;font-size:20px;color:var(--muted);cursor:pointer;padding:0 4px;line-height:1}
.ai-panel-close:hover{color:var(--ink)}
.ai-panel-tabs{display:flex;gap:0;border-bottom:1px solid var(--line)}
.ai-tab{flex:1;padding:8px 0;font-size:12px;font-weight:600;background:none;border:none;border-bottom:2px solid transparent;color:var(--muted);cursor:pointer}
.ai-tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.ai-tab:hover{color:var(--ink)}
.ai-panel-body{flex:1;display:flex;flex-direction:column;overflow:hidden}
.ai-tab-page{display:none;flex:1;flex-direction:column;overflow:hidden}
.ai-tab-page.active{display:flex}
.ai-messages{flex:1;overflow-y:auto;padding:12px 14px;display:flex;flex-direction:column;gap:10px}
.ai-message{max-width:100%;padding:10px 12px;border-radius:8px;font-size:13px;line-height:1.7;word-break:break-word}
.ai-message-user{background:var(--wash);align-self:flex-end}
.ai-message-assistant{background:var(--paper);border:1px solid var(--line);align-self:flex-start}
.ai-message-error{background:#fdf0ee;color:#a34c3e;align-self:flex-start}
.ai-message-content{white-space:pre-wrap}
.ai-input-row{display:flex;gap:6px;padding:10px 14px;border-top:1px solid var(--line)}
.ai-input-row input{flex:1;height:34px;border:1px solid var(--line);border-radius:5px;background:var(--paper);padding:4px 10px;font:inherit;font-size:13px;color:var(--ink);outline:none}
.ai-input-row input:focus{border-color:var(--accent)}
.ai-input-row button{height:34px;padding:0 14px;border:1px solid var(--line);border-radius:5px;background:var(--paper);font-size:12px;font-weight:600;color:var(--ink);cursor:pointer;white-space:nowrap}
.ai-input-row button:hover{background:var(--wash)}
.ai-context-notice{padding:6px 14px;font-size:11px;color:var(--muted);border-top:1px solid var(--line)}
.ai-notice-warning{color:#a37a3e}
.ai-proposal-card{display:flex;flex-direction:column;gap:8px;padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--paper);margin-bottom:10px}
.ai-proposal-header{display:flex;justify-content:space-between;align-items:center}
.ai-proposal-action{font-size:11px;font-weight:600;letter-spacing:1px;color:var(--accent)}
.ai-proposal-time{font-size:10px;color:var(--muted)}
.ai-proposal-original{font-size:12px;color:var(--muted);text-decoration:line-through;padding:6px 8px;background:var(--wash);border-radius:4px;white-space:pre-wrap}
.ai-proposal-suggested{font-size:13px;color:var(--ink);padding:6px 8px;background:#e9eee4;border-radius:4px;white-space:pre-wrap}
.ai-proposal-actions{display:flex;gap:6px}
.ai-proposal-actions button{flex:1;height:28px;font-size:11px;font-weight:600;border:1px solid var(--line);border-radius:4px;background:var(--paper);color:var(--ink);cursor:pointer}
.ai-proposal-actions button.ai-accept{background:var(--accent);color:#fff;border-color:var(--accent)}
.ai-proposal-actions button:hover{opacity:.85}

/* AI selection toolbar: floating action bar for selected text. */
.ai-selection-toolbar{position:fixed;z-index:20;display:flex;gap:4px;padding:4px;background:var(--bg);border:1px solid var(--line);border-radius:6px;box-shadow:0 4px 16px #0002}
.ai-selection-toolbar[hidden]{display:none}
.ai-selection-toolbar button{height:26px;padding:0 10px;font-size:11px;font-weight:600;border:1px solid var(--line);border-radius:4px;background:var(--paper);color:var(--ink);cursor:pointer;white-space:nowrap}
.ai-selection-toolbar button:hover{background:var(--wash);color:var(--accent)}
.ai-toolbar-hint{font-size:11px;color:var(--muted);padding:4px 8px}

/* AI provider settings dialog. */
.ai-settings-dialog{border:1px solid var(--line);border-radius:10px;background:var(--bg);padding:0;max-width:480px;width:90vw}
.ai-settings-dialog::backdrop{background:#0006}
.ai-settings-form{display:flex;flex-direction:column;gap:12px;padding:20px}
.ai-settings-form h2{margin:0;font-size:16px;color:var(--ink)}
.ai-settings-hint{margin:0;font-size:12px;color:var(--muted);line-height:1.6}
.ai-settings-form label{display:flex;flex-direction:column;gap:4px;font-size:12px;font-weight:600;color:var(--ink)}
.ai-settings-form input{height:34px;border:1px solid var(--line);border-radius:5px;background:var(--paper);padding:4px 10px;font:inherit;font-size:13px;color:var(--ink);outline:none}
.ai-settings-form input:focus{border-color:var(--accent)}
.ai-settings-actions{display:flex;gap:8px;justify-content:flex-end;padding-top:8px}
.ai-settings-actions button{height:32px;padding:0 14px;font-size:12px;font-weight:600;border:1px solid var(--line);border-radius:5px;background:var(--paper);color:var(--ink);cursor:pointer}
.ai-settings-actions button:first-child{background:var(--accent);color:#fff;border-color:var(--accent)}
.ai-provider-status{font-size:12px;color:var(--muted)}

/* AI document analysis tab. */
.ai-analysis-controls{display:flex;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line)}
.ai-analysis-btn{height:32px;padding:0 14px;font-size:12px;font-weight:600;border:1px solid var(--line);border-radius:5px;background:var(--paper);color:var(--ink);cursor:pointer;white-space:nowrap}
.ai-analysis-btn:hover{background:var(--wash);color:var(--accent)}
.ai-analysis-content{flex:1;overflow-y:auto;padding:12px 14px;display:flex;flex-direction:column;gap:12px}
.ai-analysis-placeholder{font-size:12px;color:var(--muted);text-align:center;padding:40px 0}
.ai-analysis-loading{font-size:12px;color:var(--muted);text-align:center;padding:40px 0}
.ai-analysis-error{font-size:12px;color:#a34c3e;background:#fdf0ee;padding:10px 12px;border-radius:5px}
.ai-analysis-section{display:flex;flex-direction:column;gap:8px}
.ai-analysis-section h3{margin:0;font-size:12px;font-weight:600;letter-spacing:1px;color:var(--muted);text-transform:uppercase}
.ai-analysis-empty{font-size:12px;color:var(--muted);margin:0}
.ai-outline{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.ai-outline-item{font-size:13px;line-height:1.6;color:var(--ink);padding:4px 0;display:flex;align-items:baseline;gap:6px}
.ai-outline-marker{font-family:Consolas,monospace;font-size:11px;color:var(--accent);flex-shrink:0;min-width:20px}
.ai-outline-level-1{padding-left:0;font-weight:600}
.ai-outline-level-2{padding-left:12px}
.ai-outline-level-3{padding-left:24px}
.ai-outline-level-4{padding-left:36px}
.ai-outline-level-5{padding-left:48px}
.ai-outline-level-6{padding-left:60px}
.ai-stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.ai-stat{display:flex;flex-direction:column;align-items:center;padding:10px 6px;background:var(--paper);border:1px solid var(--line);border-radius:6px}
.ai-stat-value{font-size:18px;font-weight:600;color:var(--accent);font-variant-numeric:tabular-nums}
.ai-stat-label{font-size:10px;color:var(--muted);margin-top:2px}
.ai-summary{font-size:13px;line-height:1.8;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:12px}

/* Search panel: cross-folder full-text search (desktop). */
.search-panel{position:fixed;right:0;top:0;bottom:0;width:380px;background:var(--bg);border-left:1px solid var(--line);display:flex;flex-direction:column;z-index:8;box-shadow:-8px 0 30px #0001}
.search-panel[hidden]{display:none}
.search-panel-header{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--line)}
.search-panel-title{font-size:13px;font-weight:600;letter-spacing:1px;color:var(--ink)}
.search-panel-close{background:none;border:none;font-size:20px;color:var(--muted);cursor:pointer;padding:0 4px;line-height:1}
.search-panel-close:hover{color:var(--ink)}
.search-panel-controls{padding:12px 14px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.search-panel-controls input{width:100%;height:34px;border:1px solid var(--line);border-radius:5px;background:var(--paper);padding:4px 10px;font:inherit;font-size:13px;color:var(--ink);outline:none}
.search-panel-controls input:focus{border-color:var(--accent)}
.search-options{display:flex;gap:12px}
.search-options label{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--muted);cursor:pointer}
.search-options input[type=checkbox]{accent-color:var(--accent)}
.search-panel-results{flex:1;overflow-y:auto;padding:12px 14px;display:flex;flex-direction:column;gap:10px}
.search-panel-status{padding:8px 14px;font-size:11px;color:var(--muted);border-top:1px solid var(--line)}
.search-folder{display:flex;flex-direction:column;gap:6px}
.search-folder-name{font-size:11px;font-weight:600;letter-spacing:1px;color:var(--muted);text-transform:uppercase;padding:4px 0;border-bottom:1px solid var(--line)}
.search-file{display:flex;flex-direction:column;gap:2px}
.search-file-name{font-size:12px;font-weight:600;color:var(--ink);padding:4px 0}
.search-match{padding:6px 8px;border-radius:4px;cursor:pointer;font-size:12px;line-height:1.5;color:var(--muted);border-left:2px solid transparent}
.search-match:hover{background:var(--wash);border-left-color:var(--accent);color:var(--ink)}
.search-match-line{display:block;font-size:10px;color:var(--accent);font-weight:600;margin-bottom:2px}
.search-match-context{display:block;word-break:break-all;white-space:pre-wrap}
#update-progress{margin:16px 0 4px}
#update-bar{width:100%;height:8px;accent-color:var(--accent);color:var(--accent)}
#update-progress-text{font-size:11px;color:var(--muted);margin-top:6px;text-align:right;font-variant-numeric:tabular-nums}
#update-message{word-break:break-word}
#update-dialog .dialog-actions{flex-wrap:wrap}