:root{--bg:#f5f6f8;--bg-primary:#fff;--text:#1f2329;--text-secondary:#5b6168;--border:#e3e6eb;--border-light:#eef0f3;--accent:#2f6bff;--hl:#e34935;--thumb-opacity:.3}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color:var(--text);background:var(--bg)}header{padding:12px 16px;background:var(--bg-primary);border-bottom:1px solid var(--border);display:flex;gap:10px;align-items:center;flex-wrap:wrap}header h1{font-size:16px;margin:0 12px 0 0}header .grow{flex:1}button,.btn{border:1px solid var(--border);background:#fff;border-radius:6px;padding:6px 12px;font-size:13px;cursor:pointer;color:var(--text-secondary)}button.primary,.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}label.ck{font-size:13px;color:var(--text-secondary);display:flex;align-items:center;gap:4px}.mv-layout{display:flex;height:calc(100vh - 110px)}.mv-left{width:46%;overflow:auto;border-right:1px solid var(--border);padding:16px 20px;background:var(--bg-primary)}.mv-right{flex:1;min-width:0;display:flex;flex-direction:column;padding:0;background:#525659}.source-pane{display:flex;flex-direction:column;flex:1;min-height:0;min-width:0;color:#fff}.sp-toolbar{display:flex;align-items:center;gap:6px;padding:8px 12px;background:#3a3d42;border-bottom:1px solid #2b2e33;flex:0 0 auto}.sp-btn{border:1px solid #5a5e66;background:#4a4e55;color:#e8eaed;border-radius:5px;padding:4px 10px;font-size:13px;cursor:pointer;line-height:1.2}.sp-btn:hover{background:#565b63}.sp-btn.on{background:var(--accent);border-color:var(--accent);color:#fff}.sp-btn:disabled{opacity:.4;cursor:default}.sp-ind{color:#e8eaed;font-size:13px;min-width:70px;text-align:center}.sp-sep{width:1px;height:18px;background:#5a5e66;margin:0 2px}.sp-grow{flex:1}.sp-zoom{color:#e8eaed;font-size:12px;min-width:42px;text-align:center}.sp-body{display:flex;flex:1;min-height:0;min-width:0;position:relative;overflow:hidden}.sp-thumbs{position:absolute;top:0;bottom:0;left:0;width:208px;z-index:6;overflow:auto;background:#3a3d42;padding:16px 14px;box-shadow:2px 0 12px #00000047;opacity:var(--thumb-opacity, .3);transition:opacity .2s ease,transform .22s ease}.sp-thumbs:hover,.sp-thumbs.scrolling,.sp-thumbs.pinned{opacity:1}.sp-thumbs.collapsed{transform:translate(-100%);opacity:0;pointer-events:none}.sp-thumb-edge{position:absolute;top:0;bottom:0;left:0;width:5%;min-width:30px;z-index:5}.sp-thumb-edge:after{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:48px;border-radius:0 4px 4px 0;background:#ffffff2e;transition:background .2s}.sp-thumb-edge:hover:after{background:var(--accent)}.sp-thumb{position:relative;margin-bottom:14px;cursor:pointer;border:2px solid transparent;border-radius:4px;overflow:hidden}.sp-thumb:hover{border-color:#6b7280}.sp-thumb.active{border-color:var(--accent)}.sp-thumb-canvas{display:block;width:100%;height:auto;background:#fff}.sp-thumb-num{position:absolute;left:4px;bottom:4px;background:#0009;color:#fff;font-size:11px;padding:0 5px;border-radius:6px}.sp-canvas-area{flex:1;min-width:0;overflow:auto;padding:16px}.pane-state{padding:12px;color:var(--text-secondary);font-size:13px}.pane-state.err{color:var(--hl)}.md-block{position:relative;padding:6px 10px;border-radius:6px;border:1px solid transparent;margin:8px 0;cursor:pointer;transition:background .12s,border-color .12s}.md-block:hover{background:#f0f5ff}.md-block.active{border-color:var(--accent);background:#eaf1ff}.md-block.no-match{opacity:.92}.md-block .block-toolbar{position:absolute;top:-12px;right:8px;display:none;gap:4px;background:#fff;border:1px solid var(--border);border-radius:6px;padding:2px;box-shadow:0 2px 8px #00000014}.md-block:hover .block-toolbar{display:flex}.md-block .block-toolbar button{border:none;background:transparent;cursor:pointer;padding:3px 5px;border-radius:4px;color:var(--text-secondary);display:inline-flex}.md-block .block-toolbar button:hover{background:#eef0f3;color:var(--accent)}.md-block .block-toolbar button.on{color:#f5a623}.icn{width:15px;height:15px;display:block}.block-type-badge{position:absolute;left:-2px;top:-9px;font-size:10px;color:#fff;background:#8a94a6;padding:1px 6px;border-radius:8px;opacity:0;transition:opacity .12s;pointer-events:none}.md-block:hover .block-type-badge{opacity:1}.block-content>:first-child{margin-top:0}.block-content>:last-child{margin-bottom:0}.block-content table{border-collapse:collapse;margin:6px 0;font-size:13px;width:auto;max-width:100%}.block-content th,.block-content td{border:1px solid var(--border);padding:4px 8px;vertical-align:top}.block-content th{background:var(--bg);font-weight:600}.md-flash{animation:flash .9s ease-out}@keyframes flash{0%{background:#fff6cc}to{background:transparent}}.block-edit{margin-top:8px;border:1px solid var(--border);border-radius:8px;background:#fff;padding:8px}.block-edit-tabs{display:flex;align-items:center;gap:6px;margin-bottom:6px}.block-edit-tabs button{border:1px solid var(--border);background:#fff;border-radius:4px;padding:3px 10px;font-size:12px;cursor:pointer}.block-edit-tabs button.on{background:var(--accent);color:#fff;border-color:var(--accent)}.block-edit-fmt{margin-left:auto;display:flex;gap:3px}.block-edit-fmt button{border:1px solid var(--border);background:#fff;border-radius:4px;padding:3px 6px;cursor:pointer;display:inline-flex}.block-edit-preview{border:1px dashed var(--border);border-radius:6px;padding:8px;min-height:48px;font-size:14px}.block-edit-textarea{width:100%;min-height:120px;border:1px solid var(--border);border-radius:6px;padding:8px;font-family:ui-monospace,monospace;font-size:13px;resize:vertical}.block-edit-actions{margin-top:6px;display:flex;gap:8px;justify-content:flex-end}.table-editor table{border-collapse:collapse;width:100%}.table-editor th,.table-editor td{border:1px solid var(--border);padding:4px 6px}.table-editor [contenteditable]{outline:1px solid #cfe0ff;min-height:20px}.source-pane{color:#fff}.pdf-page-shell{position:relative;width:fit-content;max-width:100%;margin:0 auto 16px;background:#fff;border-radius:4px;overflow:hidden}.overlay{position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:none}.source-box{position:absolute;border:1.5px solid transparent;background:#2f6bff00;border-radius:2px;cursor:pointer;pointer-events:auto;transition:background .1s,border-color .1s}.source-box:hover{border-color:#2f6bff;background:#2f6bff1f}.source-box.active{border-color:#2f6bff;background:#2f6bff38}.source-box.dim{opacity:.25}.hl-box{position:absolute;border:2px solid;border-radius:2px;cursor:pointer;pointer-events:auto}.biz-panel{position:fixed;right:12px;bottom:12px;width:280px;max-height:50vh;overflow:auto;background:#fff;border:1px solid var(--border);border-radius:10px;box-shadow:0 6px 24px #00000026;padding:10px;display:none}.biz-panel h3{margin:0 0 8px;font-size:13px}.biz-item{border:1px solid var(--border);border-left:4px solid var(--c,#e34935);border-radius:6px;padding:6px 8px;margin-bottom:6px;cursor:pointer;font-size:12px}.biz-item:hover{background:#f6f8ff}.biz-item .meta{color:var(--text-secondary);font-size:11px;margin-top:2px}