:root{
  --bg:#f3f5f2; --surface:#fff; --side:#f8faf7; --line:#e4e9e3; --line-soft:#eef1ec;
  --text:#202c25; --muted:#7c8a80; --muted-2:#9aa69e;
  --accent:#2c7a58; --accent-dark:#1f6447; --accent-soft:#e6f2ea; --accent-2:#d3e9dc;
  --danger:#c1544c; --warn:#b8862f;
  --shadow:0 1px 3px rgba(24,48,34,.05),0 8px 28px rgba(24,48,34,.06);
  --radius:10px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%;margin:0}
body{font-family:var(--font);color:var(--text);background:var(--bg);font-size:14px;-webkit-font-smoothing:antialiased}
button,input,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
button:disabled{opacity:.5;cursor:default}
::selection{background:#c9e8d5}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:#d7ded7;border-radius:6px;border:2px solid transparent;background-clip:padding-box}
::-webkit-scrollbar-thumb:hover{background:#bfcabf;background-clip:padding-box}
::-webkit-scrollbar-track{background:transparent}

.app{display:grid;grid-template-columns:246px 322px minmax(0,1fr);grid-template-rows:minmax(0,1fr);height:100vh;overflow:hidden}
.sidebar,.list-pane,.editor-pane{min-height:0}
.list-scroll,.editor-scroll,.editor{min-height:0}
.app.side-collapsed{grid-template-columns:0 322px minmax(0,1fr)}
.app.side-collapsed .sidebar{display:none}

/* ---------- sidebar ---------- */
.sidebar{background:var(--side);border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0;overflow:hidden}
.brand{display:flex;align-items:center;gap:11px;padding:22px 18px 16px}
.brand-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(145deg,#3a9570,#206045);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:600;box-shadow:0 4px 12px rgba(31,100,71,.24)}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.4px}
.brand-sub{font-size:11px;color:var(--muted-2);margin-top:2px}
.btn-new{margin:2px 14px 14px;height:38px;border:0;border-radius:9px;background:var(--accent);color:#fff;display:flex;align-items:center;gap:8px;padding:0 12px;font-weight:600;box-shadow:0 3px 10px rgba(44,122,88,.22);transition:.15s}
.btn-new:hover{background:var(--accent-dark)}
.btn-new .plus{font-size:18px;line-height:1}
.btn-new .kbd{margin-left:auto;font-size:10px;font-weight:500;opacity:.75;background:rgba(255,255,255,.16);padding:2px 5px;border-radius:4px}
.search-box{position:relative;margin:0 14px 14px;display:flex;align-items:center}
.search-box input{width:100%;height:34px;border:1px solid var(--line);background:#fff;border-radius:8px;padding:0 28px 0 30px;outline:none;font-size:12.5px}
.search-box input:focus{border-color:#a9d2bb;box-shadow:0 0 0 3px rgba(44,122,88,.09)}
.search-box input::-webkit-search-cancel-button{display:none}
.search-icon{position:absolute;left:10px;color:var(--muted-2);font-size:17px;pointer-events:none}
.search-clear{position:absolute;right:6px;border:0;background:transparent;color:var(--muted);font-size:16px;width:22px;height:22px;line-height:1;border-radius:5px}
.search-clear:hover{background:var(--line)}
.nav-group{padding:0 9px 10px;display:flex;flex-direction:column;gap:2px}
.nav-item{display:flex;align-items:center;gap:10px;width:100%;height:33px;border:0;background:transparent;border-radius:7px;padding:0 10px;color:#47564c;text-align:left;font-size:13px;transition:.12s}
.nav-item:hover{background:#edf2ed}
.nav-item.active{background:var(--accent-soft);color:var(--accent-dark);font-weight:600}
.nav-item .ni{width:17px;text-align:center;font-size:14px;opacity:.8}
.nav-item .count{margin-left:auto;font-size:11px;color:var(--muted-2);font-variant-numeric:tabular-nums}
.nav-item.active .count{color:var(--accent)}
.side-section{padding:11px 9px 4px;border-top:1px solid var(--line-soft);min-height:0;display:flex;flex-direction:column}
.side-head{display:flex;align-items:center;justify-content:space-between;padding:0 9px 7px;font-size:11px;font-weight:700;letter-spacing:.8px;color:var(--muted-2)}
.side-add{border:0;background:transparent;color:var(--muted);font-size:16px;width:22px;height:22px;border-radius:5px;line-height:1}
.side-add:hover{background:var(--accent-soft);color:var(--accent)}
.side-list,.tag-cloud{overflow-y:auto;max-height:30vh;padding-bottom:4px}
.nb-item{display:flex;align-items:center;gap:9px;height:31px;border:0;background:transparent;border-radius:7px;padding:0 9px;width:100%;text-align:left;font-size:12.5px;color:#47564c}
.nb-item:hover{background:#edf2ed}
.nb-item.active{background:var(--accent-soft);color:var(--accent-dark);font-weight:600}
.nb-dot{width:8px;height:8px;border-radius:3px;flex:none}
.nb-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}
.nb-count{font-size:11px;color:var(--muted-2)}
.nb-more{opacity:0;border:0;background:transparent;font-size:14px;color:var(--muted);padding:0 2px;border-radius:4px}
.nb-item:hover .nb-more{opacity:1}
.tag-cloud{display:flex;flex-wrap:wrap;gap:5px;padding:0 9px}
.tag-chip{border:1px solid var(--line);background:#fff;border-radius:20px;padding:3px 9px;font-size:11px;color:#5b6a60}
.tag-chip:hover,.tag-chip.active{border-color:#a9d2bb;background:var(--accent-soft);color:var(--accent-dark)}
.tag-empty{font-size:11.5px;color:var(--muted-2);padding:2px 9px}
.side-foot{margin-top:auto;border-top:1px solid var(--line);padding:12px 14px 14px}
.storage-line{display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--muted)}
.live-dot{width:7px;height:7px;border-radius:50%;background:#47b47c;box-shadow:0 0 0 3px rgba(71,180,124,.15)}
.live-dot.off{background:#c9a24a;box-shadow:0 0 0 3px rgba(201,162,74,.15)}
.foot-actions{display:flex;gap:6px;margin-top:9px}
.foot-actions button{flex:1;height:27px;border:1px solid var(--line);background:#fff;border-radius:6px;font-size:11px;color:#56655b;white-space:nowrap;padding:0 2px}
.foot-actions button:hover{border-color:#a9d2bb;color:var(--accent)}
.foot-note{font-size:10.5px;color:var(--muted-2);margin-top:8px;text-align:center}

/* ---------- list ---------- */
.list-pane{background:#fcfdfc;border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0;position:relative}
.list-head{padding:20px 18px 14px;border-bottom:1px solid var(--line-soft);display:flex;align-items:flex-start;justify-content:space-between;gap:8px}
.list-head h2{margin:0;font-size:17px;font-weight:700;letter-spacing:.2px}
.list-head p{margin:4px 0 0;font-size:11.5px;color:var(--muted-2)}
.list-tools{display:flex;align-items:center;gap:6px}
.list-tools select{height:29px;border:1px solid var(--line);background:#fff;border-radius:7px;font-size:11.5px;padding:0 6px;outline:none;color:#56655b}
.icon-btn{border:0;background:transparent;width:30px;height:30px;border-radius:7px;display:inline-grid;place-items:center;font-size:15px;color:#5c6b61}
.icon-btn:hover{background:#edf2ed;color:var(--accent-dark)}
.icon-btn.danger-hover:hover{background:#fbeceb;color:var(--danger)}
.icon-btn.on{color:#d8a534}
.pane-toggle{display:none}
.btn-back{display:none}
.nav-scrim{display:none;position:fixed;inset:0;background:rgba(20,36,26,.34);z-index:55}
.list-scroll{flex:1;overflow-y:auto;padding:10px}
.note-card{position:relative;padding:12px 13px;border:1px solid transparent;border-radius:9px;margin-bottom:5px;cursor:pointer;transition:.12s}
.note-card:hover{background:#f4f8f4}
.note-card.active{background:#fff;border-color:#cfe6d8;box-shadow:0 2px 10px rgba(31,100,71,.08)}
.nc-top{display:flex;align-items:center;gap:6px}
.nc-title{font-size:13.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}
.nc-star{color:#d8a534;font-size:12px}
.nc-snippet{font-size:11.5px;color:var(--muted);line-height:1.55;margin-top:5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:18px}
.nc-meta{display:flex;align-items:center;gap:6px;margin-top:9px;font-size:10.5px;color:var(--muted-2)}
.nc-chip{background:var(--accent-soft);color:var(--accent-dark);padding:2px 7px;border-radius:20px;max-width:110px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nc-chip.tag{background:#f0f1ef;color:#6b776e}
.nc-more{position:absolute;right:8px;bottom:8px;opacity:0;border:0;background:#fff;border-radius:5px;font-size:14px;color:var(--muted);width:22px;height:22px;line-height:1}
.note-card:hover .nc-more{opacity:1}
.nc-img{width:100%;height:80px;object-fit:cover;border-radius:6px;margin-top:8px;background:#eef1ee}
.list-empty{position:absolute;inset:70px 0 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:var(--muted-2);pointer-events:none}
.list-empty .empty-ico{font-size:30px;opacity:.5}
.list-empty p{margin:0;font-size:13px}
.list-empty .ghost-btn{pointer-events:auto}
mark{background:#ffe9a8;color:inherit;border-radius:2px;padding:0 1px}

/* ---------- editor ---------- */
.editor-pane{background:var(--bg);display:flex;flex-direction:column;min-width:0;position:relative;overflow:hidden}
.editor-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px}
.editor-empty h2{font-size:22px;margin:26px 0 10px;font-weight:700}
.editor-empty p{color:var(--muted);line-height:1.9;margin:0 0 22px;font-size:13px}
.empty-art{position:relative;width:150px;height:110px}
.empty-art .paper{position:absolute;width:104px;height:82px;border-radius:8px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.empty-art .p1{transform:rotate(-11deg);left:8px;top:16px;background:#eaf3ec}
.empty-art .p2{transform:rotate(7deg);left:30px;top:10px;background:#f6f9f5}
.empty-art .p3{left:22px;top:6px;padding:16px 12px;display:flex;flex-direction:column;gap:7px}
.empty-art .p3 i{height:5px;border-radius:3px;background:#d9e5dc;display:block}
.empty-art .p3 i:nth-child(2){width:70%}
.empty-art .p3 i:nth-child(3){width:85%}
.empty-art .p3 b{height:22px;margin-top:2px;border-radius:4px;background:#cfe6d8}
.empty-tips{display:flex;gap:8px;margin-top:34px;flex-wrap:wrap;justify-content:center}
.empty-tips span{font-size:11px;color:var(--muted-2);border:1px solid var(--line);background:#fff;padding:5px 10px;border-radius:20px}
.primary-btn{background:var(--accent);color:#fff;border:0;border-radius:8px;height:36px;padding:0 18px;font-size:13px;font-weight:600;box-shadow:0 3px 10px rgba(44,122,88,.2)}
.primary-btn:hover{background:var(--accent-dark)}
.ghost-btn{background:#fff;border:1px solid var(--line);border-radius:8px;height:34px;padding:0 14px;font-size:12.5px;color:#56655b}
.ghost-btn:hover{border-color:#a9d2bb;color:var(--accent-dark)}
.editor{flex:1;display:flex;flex-direction:column;min-height:0}
.editor-top{display:flex;align-items:center;gap:10px;padding:14px 22px 6px;background:var(--surface)}
.title-input{flex:1;min-width:0;border:0;outline:none;font-size:23px;font-weight:700;letter-spacing:.2px;background:transparent;padding:6px 0}
.title-input::placeholder{color:#c3ccc5}
.editor-actions{display:flex;gap:2px;flex:none}
.meta-bar{display:flex;align-items:center;gap:14px;padding:2px 22px 12px;background:var(--surface);border-bottom:1px solid var(--line-soft)}
.meta-item{display:flex;align-items:center;gap:6px;font-size:11.5px;color:var(--muted-2);min-width:0}
.meta-item.grow{flex:1}
.meta-item select,.meta-item input{border:1px solid var(--line);background:#fbfcfb;border-radius:6px;height:27px;padding:0 8px;font-size:11.5px;outline:none;color:#4a5a50;max-width:220px}
.meta-item input{flex:1;max-width:none;min-width:80px}
.meta-item select:focus,.meta-item input:focus{border-color:#a9d2bb;background:#fff}
.save-state{margin-left:auto;font-size:11px;color:var(--muted-2);white-space:nowrap;display:flex;align-items:center;gap:5px}
.save-state::before{content:"";width:6px;height:6px;border-radius:50%;background:#47b47c}
.save-state.busy::before{background:#d8a534}
.save-state.error::before{background:var(--danger)}
.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:3px;padding:7px 16px;background:var(--surface);border-bottom:1px solid var(--line);min-height:44px}
.tb-group{display:flex;align-items:center;gap:2px;padding-right:7px;margin-right:4px;border-right:1px solid var(--line-soft)}
.tb-group:last-child{border-right:0}
.tb{height:27px;min-width:27px;padding:0 5px;border:0;background:transparent;border-radius:5px;display:inline-grid;place-items:center;font-size:13px;color:#4a5a50;position:relative}
.tb:hover{background:var(--accent-soft);color:var(--accent-dark)}
.tb:active,.tb.active{background:var(--accent-2)}
.tb-select{height:27px;border:1px solid var(--line);background:#fff;border-radius:6px;font-size:11.5px;padding:0 5px;outline:none;color:#4a5a50;max-width:118px}
.tb-select.wide{max-width:96px}
.tb-select.narrow{max-width:66px}
.color-btn{overflow:hidden;cursor:pointer}
.color-btn input[type=color]{position:absolute;opacity:0;width:100%;height:100%;cursor:pointer;left:0;top:0}
.color-a{font-weight:700;font-size:14px}
.color-h{font-size:13px}
.swatch{width:13px;height:3px;border-radius:2px;background:var(--text);position:absolute;bottom:3px;left:7px}
.palette i{display:block;width:12px;height:12px;border-radius:3px}
.editor-scroll{flex:1;overflow-y:auto;padding:26px 26px 60px;display:flex;justify-content:center}
.editor-content{width:100%;max-width:820px;min-height:100%;background:#fff;border:1px solid var(--line);border-radius:6px;box-shadow:var(--shadow);padding:44px 52px 90px;outline:none;font-size:15.5px;line-height:1.85;color:#26332b;word-break:break-word}
.editor-content:empty:before{content:attr(data-placeholder);color:#b9c4bb;pointer-events:none}
.editor-content h1{font-size:28px;margin:1.1em 0 .5em;line-height:1.35}
.editor-content h2{font-size:22px;margin:1.1em 0 .5em}
.editor-content h3{font-size:18px;margin:1.1em 0 .5em}
.editor-content p{margin:.55em 0}
.editor-content blockquote{margin:1em 0;padding:8px 16px;border-left:3px solid var(--accent);background:#f4f9f5;color:#526457}
.editor-content pre{background:#f5f7f5;border:1px solid var(--line);border-radius:6px;padding:12px 14px;font-family:"SF Mono",Consolas,monospace;font-size:13px;white-space:pre-wrap;line-height:1.6}
.editor-content ul,.editor-content ol{padding-left:26px;margin:.6em 0}
.editor-content li{margin:.25em 0}
.editor-content img.note-img,.editor-content img{max-width:100%;height:auto;border-radius:6px;margin:10px 0;box-shadow:0 1px 6px rgba(0,0,0,.09);display:block}
.editor-content hr{border:0;border-top:1px solid var(--line);margin:1.6em 0}
.editor-content a{color:var(--accent);text-decoration:underline}
.editor-content table{border-collapse:collapse;width:100%;margin:1em 0;font-size:14px}
.editor-content td,.editor-content th{border:1px solid #dce3dc;padding:7px 10px;min-width:60px}
.editor-content th{background:#f4f8f4;font-weight:600}
.editor-foot{display:flex;justify-content:space-between;align-items:center;padding:7px 22px;background:var(--surface);border-top:1px solid var(--line-soft);font-size:11px;color:var(--muted-2)}
.foot-hint{opacity:.85}

/* ---------- overlays ---------- */
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:#26332b;color:#fff;padding:10px 18px;border-radius:9px;font-size:12.5px;box-shadow:0 8px 26px rgba(0,0,0,.2);opacity:0;pointer-events:none;transition:.22s;z-index:100;max-width:80vw;text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}
.popup-menu{position:fixed;z-index:90;background:#fff;border:1px solid var(--line);border-radius:9px;box-shadow:0 10px 30px rgba(24,48,34,.16);padding:5px;min-width:150px}
.popup-menu button{display:block;width:100%;text-align:left;border:0;background:transparent;border-radius:6px;padding:8px 10px;font-size:12.5px;color:#405044}
.popup-menu button:hover{background:var(--accent-soft);color:var(--accent-dark)}
.popup-menu button.danger{color:var(--danger)}
.popup-menu button.danger:hover{background:#fbeceb}
.popup-menu .menu-sep{height:1px;background:var(--line-soft);margin:4px 2px}
.modal-backdrop{position:fixed;inset:0;background:rgba(22,36,27,.32);display:grid;place-items:center;z-index:95;backdrop-filter:blur(2px)}
.modal-card{width:min(420px,92vw);background:#fff;border-radius:14px;box-shadow:0 20px 60px rgba(0,0,0,.2);padding:22px 24px 18px}
.modal-card h3{margin:0 0 14px;font-size:16px}
.modal-body{font-size:13px;color:#4c5b51;line-height:1.7}
.modal-body p{margin:0 0 12px}
.modal-body label{display:block;font-size:11.5px;color:var(--muted);margin:10px 0 5px}
.modal-body input,.modal-body select{width:100%;height:34px;border:1px solid var(--line);border-radius:7px;padding:0 10px;outline:none;background:#fbfcfb;font-size:13px}
.modal-body input:focus,.modal-body select:focus{border-color:#a9d2bb;background:#fff}
.modal-body .hint{font-size:11px;color:var(--muted-2);margin-top:9px;line-height:1.6}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}
.modal-actions .ghost-btn,.modal-actions .primary-btn{height:34px}
.modal-actions .primary-btn.danger{background:var(--danger);box-shadow:none}

@media(max-width:1100px){
  .app{grid-template-columns:210px 270px minmax(0,1fr)}
  .editor-content{padding:32px 30px 70px}
  .pane-toggle{display:inline-grid}
}
@media(max-width:820px){
  .app{grid-template-columns:0 0 minmax(0,1fr);position:relative}
  .editor-pane{grid-column:1/-1}
  /* 抽屉侧栏 */
  .sidebar{position:fixed;left:0;top:0;bottom:0;width:272px;z-index:60;transform:translateX(-105%);transition:transform .22s ease;display:flex!important;box-shadow:0 12px 40px rgba(20,40,28,.22)}
  .app.nav-open .sidebar{transform:translateX(0)}
  .app.nav-open .nav-scrim{display:block}
  /* 列表与编辑器二选一 */
  .list-pane{position:absolute;left:0;right:0;top:0;bottom:0;width:auto;border-right:0;z-index:10}
  .app.mobile-list .list-pane{display:flex}
  .app.mobile-list .editor-pane{display:none}
  .app.mobile-editor .list-pane{display:none}
  .app.mobile-editor .editor-pane{display:flex}
  /* 顶部与编辑区 */
  .btn-back{display:inline-grid;flex:none;font-size:22px;line-height:1;width:30px}
  .editor-top{padding:9px 12px 4px;gap:4px}
  .title-input{font-size:19px}
  .editor-actions .icon-btn{width:28px;font-size:14px}
  .meta-bar{padding:2px 12px 10px;gap:8px;flex-wrap:wrap}
  .meta-item select,.meta-item input{max-width:150px}
  .save-state{font-size:10px}
  .toolbar{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;gap:2px;padding:6px 8px;min-height:40px}
  .tb-group{flex:none;border-right:0}
  .tb-select{max-width:92px}
  .editor-scroll{padding:14px 12px 40px}
  .editor-content{padding:22px 18px 70px;font-size:16px;border-radius:4px}
  .editor-foot{padding:6px 12px}
  .foot-hint{display:none}
  .list-head{padding:16px 14px 12px}
  .note-card{padding:13px 14px}
  .editor-empty h2{font-size:20px}
  .empty-tips{margin-top:22px}
}
@media print{
  .sidebar,.list-pane,.toolbar,.editor-top .editor-actions,.meta-bar,.editor-foot,.toast,.popup-menu,.modal-backdrop{display:none!important}
  .app{display:block;height:auto}
  .editor-pane,.editor,.editor-scroll{display:block;height:auto;overflow:visible;padding:0;background:#fff}
  .editor-content{border:0;box-shadow:none;max-width:none;padding:0;font-size:12pt}
}