.nm-root{--radius-sm:6px;--radius-md:10px;--radius-lg:13px;--radius-xl:18px;--radius-pill:99px;z-index:50;background:var(--bg-base);height:100dvh;position:fixed;inset:0}.nm-app,.nm-app *{box-sizing:border-box}.nm-app{font-family:var(--font-dm-sans);background:var(--bg-base);color:var(--text-primary);-webkit-font-smoothing:antialiased;--safe-top:calc(env(safe-area-inset-top,0px) + 12px);--safe-bottom:calc(env(safe-area-inset-bottom,0px) + 8px);flex-direction:column;display:flex;position:absolute;inset:0;overflow:hidden}.nm-top{padding-top:var(--safe-top);background:var(--topbar-bg);border-bottom:1px solid var(--border);flex-shrink:0}.nm-topbar{align-items:center;gap:8px;height:50px;padding:0 8px 0 6px;display:flex}.nm-icbtn{width:40px;height:40px;color:var(--text-secondary);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;border-radius:11px;flex-shrink:0;justify-content:center;align-items:center;transition:background .12s,color .12s;display:flex}.nm-icbtn:active{background:var(--bg-muted);color:var(--text-primary)}.nm-title{flex-direction:column;flex:1;justify-content:center;gap:1px;min-width:0;display:flex}.nm-title-row{align-items:center;gap:7px;min-width:0;display:flex}.nm-cdot{border-radius:50%;flex-shrink:0;width:8px;height:8px}.nm-cname{letter-spacing:-.01em;color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:15px;font-weight:600;overflow:hidden}.nm-sub{font-family:var(--font-mono);color:var(--text-muted);letter-spacing:.02em;font-size:10.5px}.nm-seg{background:var(--bg-muted);border-radius:11px;flex-shrink:0;gap:2px;padding:3px;display:flex}.nm-seg button{cursor:pointer;-webkit-tap-highlight-color:transparent;font-family:var(--font-dm-sans);color:var(--text-secondary);background:0 0;border:none;border-radius:8px;align-items:center;gap:5px;padding:7px 13px;font-size:12.5px;font-weight:600;transition:color .12s;display:flex}.nm-seg button.on{background:var(--node-bg);color:var(--accent-text);box-shadow:var(--shadow-sm)}.nm-scroll{-webkit-overflow-scrolling:touch;flex:1;min-height:0;overflow:hidden auto}.nm-thread{flex-direction:column;gap:16px;padding:16px 14px 12px;display:flex}.nm-m{flex-direction:column;display:flex}.nm-m.user{align-items:flex-end}.nm-ai-head{color:var(--accent-text);align-items:center;gap:6px;margin:0 0 6px 2px;font-size:11px;font-weight:600;display:flex}.nm-ai-head img{width:13px;height:13px;display:block}.nm-ai-head .clock{color:var(--text-muted);margin-left:auto;font-size:10px;font-weight:400}.nm-aibubble{background:var(--ai-card-bg);border:1px solid var(--ai-card-border);max-width:90%;color:var(--text-primary);box-shadow:var(--shadow-sm);word-break:break-word;border-radius:5px 16px 16px;align-self:flex-start;padding:12px 14px;font-size:14.5px;line-height:1.6}.nm-aibubble p{margin:0 0 7px}.nm-aibubble p:last-child{margin-bottom:0}.nm-aibubble ul{flex-direction:column;gap:4px;margin:6px 0;padding-left:18px;display:flex}.nm-aibubble li{line-height:1.5}.nm-aibubble strong{font-weight:700}.nm-aibubble em{font-family:var(--font-instrument);font-size:1.06em;font-style:italic}.nm-cursor{background:var(--accent);vertical-align:text-bottom;border-radius:1px;width:7px;height:15px;margin-left:2px;animation:1s steps(2,end) infinite nm-blink;display:inline-block}.nm-typing{gap:4px;padding:2px 0;display:inline-flex}.nm-typing i{background:var(--text-muted);border-radius:50%;width:6px;height:6px;animation:1.2s infinite nm-bounce}.nm-typing i:nth-child(2){animation-delay:.15s}.nm-typing i:nth-child(3){animation-delay:.3s}.nm-airow{flex-wrap:wrap;align-items:center;gap:7px;margin:7px 0 0 2px;display:flex}.nm-branchbtn{border-radius:var(--radius-pill);border:1px solid var(--border);background:var(--bg-subtle);height:30px;color:var(--text-secondary);cursor:pointer;-webkit-tap-highlight-color:transparent;align-items:center;gap:5px;padding:0 11px;font-size:11.5px;font-weight:600;transition:border-color .12s,color .12s,background .12s;display:inline-flex}.nm-branchbtn:active{border-color:var(--accent);color:var(--accent-text);background:var(--accent-bg)}.nm-branchchip{border-radius:var(--radius-pill);border:1px solid color-mix(in oklab, var(--accent) 35%, transparent);background:var(--accent-bg);height:30px;color:var(--accent-text);cursor:pointer;-webkit-tap-highlight-color:transparent;align-items:center;gap:6px;padding:0 5px 0 10px;font-size:11.5px;font-weight:600;display:inline-flex}.nm-branchchip .cnt{border-radius:var(--radius-pill);background:var(--accent);color:#fff;justify-content:center;align-items:center;min-width:17px;height:17px;padding:0 4px;font-size:10px;display:inline-flex}.nm-msgbtn{border-radius:var(--radius-pill);border:1px solid var(--border);background:var(--bg-subtle);height:30px;color:var(--text-secondary);cursor:pointer;-webkit-tap-highlight-color:transparent;align-items:center;gap:5px;padding:0 11px;font-size:11.5px;font-weight:600;transition:border-color .12s,color .12s,background .12s;display:inline-flex}.nm-msgbtn.icononly{justify-content:center;width:30px;padding:0}.nm-msgbtn:active{border-color:var(--accent);color:var(--accent-text);background:var(--accent-bg)}.nm-msgbtn.done{border-color:color-mix(in oklab, var(--node-green) 45%, transparent);color:var(--node-green);background:color-mix(in oklab, var(--node-green) 12%, transparent)}.nm-userbubble{background:var(--user-bubble-bg);border:1px solid var(--user-bubble-border);max-width:84%;color:var(--text-primary);word-break:break-word;white-space:pre-wrap;border-radius:16px 16px 5px;padding:10px 14px;font-size:14.5px;line-height:1.55;transition:box-shadow .2s,border-color .2s}.nm-userbubble.hl{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg)}.nm-ufoot{align-items:center;gap:9px;margin:5px 2px 0 0;display:flex}.nm-ver{border-radius:var(--radius-pill);background:var(--bg-subtle);border:1px solid var(--border);height:28px;color:var(--text-secondary);align-items:center;gap:3px;padding:0 4px;font-size:11px;display:inline-flex}.nm-ver button{width:26px;height:26px;color:var(--text-secondary);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;border-radius:7px;justify-content:center;align-items:center;padding:0;display:flex}.nm-ver button:disabled{opacity:.3}.nm-ver .n{font-variant-numeric:tabular-nums;text-align:center;min-width:26px;font-weight:600}.nm-uts{color:var(--text-muted);font-size:10px}.nm-hint{text-align:center;color:var(--text-muted);padding:4px 28px 0;font-size:11.5px;line-height:1.5}.nm-hint b{color:var(--text-secondary);font-weight:600}.nm-composer{padding:10px 12px calc(var(--safe-bottom) + 6px);border-top:1px solid var(--border);background:var(--bg-base);flex-shrink:0}.nm-branchctx{background:var(--accent-bg);border:1px solid color-mix(in oklab, var(--accent) 35%, transparent);border-radius:11px;align-items:center;gap:8px;margin-bottom:9px;padding:8px 8px 8px 12px;display:flex}.nm-branchctx .ico{color:var(--accent-text);flex-shrink:0;display:flex}.nm-branchctx .lbl{min-width:0;color:var(--accent-text);flex:1;font-size:12px;line-height:1.35}.nm-branchctx .lbl b{font-weight:700}.nm-branchctx .lbl small{opacity:.8;white-space:nowrap;text-overflow:ellipsis;font-size:10.5px;font-weight:400;display:block;overflow:hidden}.nm-branchctx .x{width:30px;height:30px;color:var(--accent-text);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.nm-form{background:var(--input-bg);border:1px solid var(--border);box-shadow:var(--shadow-sm);border-radius:22px;align-items:flex-end;gap:8px;padding:6px 6px 6px 8px;transition:border-color .15s;display:flex}.nm-form.focus{border-color:var(--accent)}.nm-attach{width:38px;height:38px;color:var(--text-muted);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.nm-attach:active{color:var(--accent)}.nm-form textarea{resize:none;font-family:var(--font-dm-sans);color:var(--text-primary);background:0 0;border:none;outline:none;flex:1;max-height:104px;padding:9px 2px;font-size:16px;line-height:1.4}.nm-form textarea::placeholder{color:var(--text-muted)}.nm-send{background:var(--accent);cursor:pointer;-webkit-tap-highlight-color:transparent;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;transition:background .15s,transform .1s;display:flex}.nm-send:disabled{background:var(--bg-muted)}.nm-send:not(:disabled):active{transform:scale(.92)}.nm-cmeta{font-family:var(--font-mono);color:var(--text-muted);justify-content:space-between;align-items:center;padding:7px 6px 0;font-size:10.5px;display:flex}.nm-cmeta .max{color:var(--color-error)}.nm-locked{background:var(--accent);color:#fff;width:100%;font-family:var(--font-dm-sans);cursor:pointer;-webkit-tap-highlight-color:transparent;border:none;border-radius:14px;padding:13px 14px;font-size:13px;font-weight:600;line-height:1.35}.nm-error{color:var(--color-error);background:var(--color-error-bg);border:1px solid var(--color-error-border);border-radius:9px;margin-bottom:9px;padding:8px 11px;font-size:12px}.nm-banner{text-align:center;color:var(--accent-text);background:var(--accent-bg);border-bottom:1px solid color-mix(in oklab, var(--accent) 22%, transparent);flex-shrink:0;padding:8px 16px;font-size:11.5px;line-height:1.45}.nm-banner .mut{color:var(--text-muted)}.nm-treewrap{background:var(--tree-bg);touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;flex:1;min-height:0;position:relative;overflow:hidden}.nm-grid{background-image:radial-gradient(var(--grid-dot) 1px, transparent 1px);background-size:26px 26px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(120% 100% at 50% 42%,#000 55%,#0000 100%);mask-image:radial-gradient(120% 100% at 50% 42%,#000 55%,#0000 100%)}.nm-world{transform-origin:0 0;position:absolute;top:0;left:0}.nm-edge-svg{pointer-events:none;position:absolute;inset:0;overflow:visible}.nm-tnode{border:1px solid var(--node-border);background:var(--node-bg);box-shadow:var(--shadow-sm);cursor:pointer;-webkit-tap-highlight-color:transparent;border-radius:13px;padding:10px 12px;transition:border-color .14s,box-shadow .14s,transform .14s;position:absolute}.nm-tnode.active{border-color:var(--node-active-border);background:var(--node-active-bg);box-shadow:0 0 0 1px color-mix(in oklab, var(--accent) 32%, transparent), var(--shadow-md)}.nm-tnode.sel{box-shadow:0 0 0 2px var(--accent), var(--shadow-lg)}.nm-ttitle{color:var(--text-primary);align-items:center;gap:6px;font-size:13px;font-weight:700;line-height:1.28;display:flex}.nm-ttitle .cdot{border-radius:50%;flex-shrink:0;width:8px;height:8px}.nm-tsummary{color:var(--text-muted);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-top:4px;font-size:11.5px;line-height:1.4;display:-webkit-box;overflow:hidden}.nm-tnode.active .nm-tsummary{color:var(--text-secondary)}.nm-tpending{opacity:.7;font-style:italic}.nm-tctrl{z-index:4;flex-direction:column;gap:8px;display:flex;position:absolute;bottom:16px;right:14px}.nm-tctrl button{border:1px solid var(--border);background:var(--node-bg);width:42px;height:42px;color:var(--text-secondary);cursor:pointer;box-shadow:var(--shadow-md);-webkit-tap-highlight-color:transparent;border-radius:13px;justify-content:center;align-items:center;display:flex}.nm-tctrl button:active{color:var(--text-primary);border-color:var(--border-strong)}.nm-tphint{z-index:4;border-radius:var(--radius-pill);background:color-mix(in oklab, var(--node-bg) 86%, transparent);border:1px solid var(--border);-webkit-backdrop-filter:blur(10px);color:var(--text-secondary);box-shadow:var(--shadow-sm);white-space:nowrap;align-items:center;gap:7px;padding:8px 14px;font-size:11.5px;display:inline-flex;position:absolute;top:12px;left:50%;transform:translate(-50%)}.nm-tphint .d{background:var(--accent);border-radius:50%;width:7px;height:7px}.nm-tsel{z-index:5;background:var(--node-bg);border:1px solid var(--border);box-shadow:var(--shadow-lg);border-radius:16px;align-items:center;gap:12px;padding:12px 12px 12px 14px;display:flex;position:absolute;bottom:16px;left:14px;right:14px}.nm-tsel .info{flex:1;min-width:0}.nm-tsel .info .tt{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:13.5px;font-weight:700;overflow:hidden}.nm-tsel .info .ss{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;margin-top:2px;font-size:11px;overflow:hidden}.nm-tsel .act{flex-shrink:0;gap:7px;display:flex}.nm-tsel .act button{cursor:pointer;-webkit-tap-highlight-color:transparent;height:38px;font-family:var(--font-dm-sans);border:none;border-radius:11px;align-items:center;gap:6px;padding:0 14px;font-size:12.5px;font-weight:600;display:flex}.nm-tsel .act .open{background:var(--accent);color:#fff}.nm-tsel .act .fork{background:var(--bg-subtle);color:var(--text-secondary);border:1px solid var(--border)}.nm-overlay{z-index:30;background:var(--modal-overlay);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s;position:absolute;inset:0}.nm-overlay.show{opacity:1;visibility:visible;pointer-events:auto}.nm-drawer{z-index:31;background:var(--sidebar-bg);border-right:1px solid var(--border);opacity:0;visibility:hidden;width:84%;max-width:320px;box-shadow:var(--shadow-lg);flex-direction:column;display:flex;position:absolute;top:0;bottom:0;left:0}.nm-drawer.show{opacity:1;visibility:visible;animation:.32s cubic-bezier(.33,1,.68,1) nm-slide-l}@keyframes nm-slide-l{0%{transform:translate(-16px)}to{transform:translate(0)}}.nm-dr-head{padding:calc(var(--safe-top) + 6px) 16px 14px;align-items:center;gap:10px;display:flex}.nm-dr-wm{font-family:var(--font-bricolage);letter-spacing:-.025em;color:var(--accent);font-size:22px;font-weight:500}.nm-dr-x{width:36px;height:36px;color:var(--text-muted);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;border-radius:10px;justify-content:center;align-items:center;margin-left:auto;display:flex}.nm-dr-new{background:var(--accent);color:#fff;height:46px;font-family:var(--font-dm-sans);cursor:pointer;-webkit-tap-highlight-color:transparent;border:none;border-radius:13px;justify-content:center;align-items:center;gap:8px;margin:4px 14px 12px;font-size:14.5px;font-weight:600;display:flex}.nm-dr-search{background:var(--bg-muted);border:1px solid var(--border);height:42px;color:var(--text-muted);cursor:pointer;-webkit-tap-highlight-color:transparent;border-radius:12px;align-items:center;gap:9px;width:calc(100% - 28px);margin:0 14px 16px;padding:0 13px;font-size:13.5px;display:flex}.nm-dr-sec{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);padding:4px 20px 8px;font-size:10px;font-weight:500}.nm-dr-list{flex:1;min-height:0;padding-bottom:12px;overflow-y:auto}.nm-dr-conv{cursor:pointer;color:var(--text-secondary);-webkit-tap-highlight-color:transparent;border-radius:11px;align-items:center;gap:11px;margin:2px 10px;padding:12px;font-size:14.5px;transition:background .12s,color .12s;display:flex}.nm-dr-conv:active{background:var(--bg-muted)}.nm-dr-conv.active{background:var(--accent-bg);color:var(--accent-text);font-weight:600}.nm-dr-conv .dot{border-radius:50%;flex-shrink:0;width:9px;height:9px}.nm-dr-conv .nm{white-space:nowrap;text-overflow:ellipsis;flex:1;overflow:hidden}.nm-dr-conv .ct{font-family:var(--font-mono);color:var(--text-muted);font-size:10.5px}.nm-dr-foot{border-top:1px solid var(--border);padding:14px 16px calc(var(--safe-bottom) + 8px);align-items:center;gap:11px;display:flex}.nm-dr-ava{background:var(--accent-bg);width:34px;height:34px;color:var(--accent-text);font-family:var(--font-mono);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;font-weight:600;display:flex}.nm-dr-foot .who{white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;font-size:13.5px;line-height:1.3;overflow:hidden}.nm-dr-foot .who small{color:var(--text-muted);font-size:11px;display:block}.nm-dr-foot .ico{width:36px;height:36px;color:var(--text-muted);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;border-radius:10px;justify-content:center;align-items:center;display:flex}.nm-sheet{z-index:32;background:var(--modal-bg);border-top:1px solid var(--border);box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;padding:8px 0 calc(var(--safe-bottom) + 12px);border-radius:22px 22px 0 0;flex-direction:column;max-height:76%;display:flex;position:absolute;bottom:0;left:0;right:0}.nm-sheet.show{opacity:1;visibility:visible;animation:.34s cubic-bezier(.33,1,.68,1) nm-slide-up}@keyframes nm-slide-up{0%{transform:translateY(26px)}to{transform:translateY(0)}}.nm-sheet-grip{background:var(--border-strong);border-radius:99px;width:38px;height:5px;margin:4px auto 10px}.nm-sheet-h{padding:2px 20px 12px}.nm-sheet-h .t{color:var(--text-primary);font-size:16px;font-weight:700}.nm-sheet-h .s{color:var(--text-muted);margin-top:3px;font-size:12.5px;line-height:1.4}.nm-sheet-list{flex-direction:column;gap:8px;padding:0 14px;display:flex;overflow-y:auto}.nm-pick{border:1px solid var(--border);background:var(--bg-subtle);cursor:pointer;text-align:left;-webkit-tap-highlight-color:transparent;border-radius:14px;align-items:center;gap:11px;width:100%;padding:13px;display:flex}.nm-pick.cur{border-color:var(--accent);background:var(--accent-bg)}.nm-pick 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