:root{--brand-navy: #182858;--brand-orange: #E85010;--brand-teal: #60C0B8;--brand-yellow: #F8F000;--brand-gray: #C8C8C8;--brand-dark: #383838;--bg: #f4f5f8;--surface: #ffffff;--surface-2: #f8f9fb;--line: #e3e6ec;--line-2: #d3d8e0;--tx: #182858;--tx-2: #5a6373;--tx-3: #98a1ae;--accent: var(--brand-orange);--accent-2: var(--brand-navy);--accent-soft: #fdece1;--accent-soft-2: #e6e9f1;--warn: var(--brand-orange);--ok: #12855f;--r: 6px;--topbar-h: 50px;--status-h: 26px;--font: "Avenir Next", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI", Roboto, sans-serif;--mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;font-family:var(--font);font-size:13px;color:var(--tx);background:var(--bg);overflow:hidden;-webkit-font-smoothing:antialiased}body[data-theme=engineering]{background:radial-gradient(ellipse at 50% 38%,#fbf4e0,#f1e5c5 65%,#e6d6b0)}body[data-theme=studio]{background:radial-gradient(ellipse at 50% 38%,#f8f6f1,#ebe5d6 70%,#dfd8c5)}body[data-theme=brand]{background:radial-gradient(ellipse at 50% 38%,#f4f6fc,#dce5f3 70%,#cdd6e8)}body[data-theme=morandi]{background:radial-gradient(ellipse at 50% 38%,#fcfaf5,#ede6d7 70%,#e1d9c7)}body[data-theme=darkstage]{background:radial-gradient(ellipse at 50% 38%,#262a32,#15181f 70%,#060810);color:#cbd2dc}body[data-theme=darkstage] .panel{background:#141820eb;border-color:#ffffff14;color:#cbd2dc}body[data-theme=darkstage] .panel-head{color:#d8dde6;border-bottom-color:#ffffff14}body[data-theme=darkstage] .pane-body,body[data-theme=darkstage] .node-label{color:#cbd2dc}body[data-theme=darkstage] .tree-node:hover{background:#ffffff0f}body[data-theme=darkstage] .tnode.active{background:#e850102e;color:#fff}body[data-theme=darkstage] .tnode.active .node-label{color:#fff}body[data-theme=darkstage] input,body[data-theme=darkstage] select{background:#ffffff0f;color:#e7ecf3;border-color:#ffffff1f}body[data-theme=darkstage] .status{background:#141820eb;color:#cbd2dc}body[data-theme=darkstage] .axis-row,body[data-theme=darkstage] .form-row label,body[data-theme=darkstage] .meas-list{color:#cbd2dc}body[data-theme=darkstage] .btn:not(.btn-primary){background:#ffffff14;border-color:#ffffff1f;color:#e0e5ec}body[data-theme=darkstage] .btn:not(.btn-primary):hover{background:#ffffff24;border-color:#fff3}.ic{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}.topbar{height:var(--topbar-h);display:flex;align-items:center;gap:8px;padding:0 14px;background:var(--brand-navy);border-bottom:1px solid #0d1a3a;position:relative;z-index:20;color:#fff}.topbar .btn{color:#e5e9f3}.topbar .btn:hover{background:#ffffff14;border-color:#ffffff2e;color:#fff}.topbar .btn:active{background:#ffffff24}.topbar .btn.active{background:var(--brand-orange);color:#fff;border-color:var(--brand-orange)}.topbar select{color:#e5e9f3;background-color:#ffffff0f;border-color:#ffffff2e}.topbar select:hover{border-color:#ffffff52}.topbar .tb-sep{background:#ffffff2e}.brand{display:flex;align-items:center;gap:9px;padding-right:8px}.brand-mark{width:26px;height:26px;flex:none;background-image:url(../brand-mark-white.png);background-size:contain;background-repeat:no-repeat;background-position:center;filter:drop-shadow(0 1px 2px rgba(0,0,0,.18))}.brand-name{font-weight:800;font-size:14px;letter-spacing:.4px;white-space:nowrap;color:#fff;display:flex;align-items:baseline;gap:6px}.brand-name .brand-name-en{font-weight:800;letter-spacing:.8px}.brand-name .brand-name-cn{font-weight:600;font-size:12px;opacity:.8}.brand-tag{font-size:11px;color:var(--brand-orange);background:#e8501024;padding:2px 8px;border-radius:20px;white-space:nowrap;font-weight:600}.offline-badge{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:600;white-space:nowrap;padding:2px 9px 2px 7px;border-radius:20px;border:1px solid transparent;transition:background .25s,color .25s,border-color .25s;cursor:default;user-select:none}.offline-badge .ob-dot{width:6px;height:6px;border-radius:50%;background:currentColor;flex:none}.offline-badge[data-state=idle]{color:#ffffff8c;background:#ffffff14;border-color:#ffffff1f}.offline-badge[data-state=caching]{color:#ffcf8a;background:#e850102e;border-color:#e8501059}.offline-badge[data-state=caching] .ob-dot{animation:ob-pulse 1.1s ease-in-out infinite}.offline-badge[data-state=ready]{color:#7ee2a8;background:#2ebe6e29;border-color:#2ebe6e57}.offline-badge[data-state=offline]{color:#ffd7a0;background:#e8501047;border-color:#e8501080}@keyframes ob-pulse{0%,to{opacity:1}50%{opacity:.25}}.tb-group{display:flex;align-items:center;gap:3px}.tb-sep{width:1px;height:20px;background:var(--line);margin:0 4px}.tb-spacer{flex:1}.btn{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 10px;font-family:inherit;font-size:12.5px;color:var(--tx);background:transparent;border:1px solid transparent;border-radius:var(--r);cursor:pointer;white-space:nowrap;transition:background .12s,color .12s,border-color .12s}.btn:hover{background:var(--surface-2);border-color:var(--line)}.btn:active{background:var(--line)}.btn.ico{padding:0 8px}.btn.active{background:var(--accent-soft);color:var(--accent);border-color:#f4c8b3}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:500}.btn-primary:hover{background:#c8430d;border-color:#c8430d}.btn.wide{width:100%;justify-content:center;border:1px solid var(--line-2);background:var(--surface);margin-top:4px}.btn.wide:hover{background:var(--surface-2)}select{height:28px;padding:0 24px 0 9px;font-family:inherit;font-size:12.5px;color:var(--tx);background:var(--surface) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%23656d7a' stroke-width='2.4' stroke-linecap='round'><path d='M6 9l6 6 6-6'/></svg>") no-repeat right 7px center;border:1px solid var(--line-2);border-radius:var(--r);cursor:pointer;appearance:none}select:hover{border-color:var(--tx-3)}.layout{display:flex;height:calc(100% - var(--topbar-h) - var(--status-h))}.panel{background:var(--surface);display:flex;flex-direction:column;flex:none}.panel-left{width:258px;border-right:1px solid var(--line)}.panel-right{width:268px;border-left:1px solid var(--line)}.panel-head{height:34px;flex:none;display:flex;align-items:center;justify-content:space-between;padding:0 10px 0 12px;font-size:12px;font-weight:700;color:var(--brand-navy);letter-spacing:.3px;border-bottom:1px solid var(--line);position:relative}.panel-head:before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;background:var(--brand-orange);border-radius:0 2px 2px 0}.panel-head-act{display:flex;gap:3px}.mini{height:21px;padding:0 7px;font-family:inherit;font-size:11px;color:var(--tx-2);background:var(--surface-2);border:1px solid var(--line);border-radius:4px;cursor:pointer}.mini:hover{color:var(--accent);border-color:#f4c8b3;background:var(--accent-soft)}.tree{flex:1;overflow:auto;padding:5px 0 10px}.tree-empty{padding:24px 14px;color:var(--tx-3);font-size:12px;text-align:center}.tnode{user-select:none}.trow{display:flex;align-items:center;gap:4px;height:25px;padding-right:8px;cursor:pointer;font-size:12.5px;border-left:2px solid transparent}.trow:hover{background:var(--surface-2)}.trow.sel{background:var(--accent-soft);border-left-color:var(--accent);color:var(--accent)}.trow.hidden-part{opacity:.42}.tcaret{width:15px;height:15px;flex:none;display:flex;align-items:center;justify-content:center;color:var(--tx-3)}.tcaret svg{width:11px;height:11px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:transform .13s}.tnode.open>.trow .tcaret svg{transform:rotate(90deg)}.tcaret.leaf{visibility:hidden}.ticon{width:14px;height:14px;flex:none;color:var(--tx-3)}.ticon svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linejoin:round}.trow.sel .ticon{color:var(--accent)}.tname{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tswatch{width:9px;height:9px;border-radius:2px;flex:none;border:1px solid rgba(0,0,0,.12)}.teye{width:20px;height:20px;flex:none;border:0;background:none;padding:0;display:none;align-items:center;justify-content:center;color:var(--tx-3);cursor:pointer;border-radius:3px}.trow:hover .teye,.teye.off{display:flex}.teye:hover{color:var(--accent);background:#fff}.teye svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.tchildren{display:none}.tnode.open>.tchildren{display:block}.part-info{flex:none;border-top:1px solid var(--line);padding:9px 12px 11px;background:var(--surface-2)}.pi-title{font-size:12.5px;font-weight:600;margin-bottom:6px;word-break:break-all}.pi-list{display:grid;grid-template-columns:62px 1fr;gap:3px 8px;margin:0;font-size:11.5px}.pi-list dt{color:var(--tx-3)}.pi-list dd{margin:0;font-family:var(--mono);font-size:11px;color:var(--tx-2)}.stage{flex:1;position:relative;min-width:0;background:transparent}.canvas-host{position:absolute;inset:0}.canvas-host canvas{display:block}.dropzone{position:absolute;inset:0;z-index:5;display:flex;align-items:center;justify-content:center;background:radial-gradient(ellipse at 50% 38%,#fff,#e7ebf1);transition:background .15s}.dropzone.over{background:radial-gradient(ellipse at 50% 38%,#f0f7ff,#d6e6fa)}.dropzone[hidden]{display:none}.dz-inner{text-align:center;max-width:400px;padding:20px}.dz-ic{width:46px;height:46px;fill:none;stroke:var(--tx-3);stroke-width:1.1;stroke-linejoin:round;margin-bottom:14px}.dropzone.over .dz-ic{stroke:var(--accent)}.dz-title{font-size:16px;font-weight:600;margin:0 0 6px}.dz-sub{font-size:12.5px;color:var(--tx-2);margin:0 0 18px;line-height:1.65}.dz-btns{display:flex;gap:8px;justify-content:center}.btn-ghost{border:1px solid var(--line-2);background:var(--surface)}.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.dz-note{font-size:11.5px;color:var(--tx-3);margin:14px 0 0}.loading{position:absolute;inset:0;z-index:8;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:#eef1f5e0;backdrop-filter:blur(2px)}.loading[hidden]{display:none}.spinner{width:26px;height:26px;border-radius:50%;border:2.5px solid var(--line-2);border-top-color:var(--accent);animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-size:12.5px;color:var(--tx-2)}.viewcube-hint{position:absolute;left:50%;bottom:18px;transform:translate(-50%);z-index:6;padding:6px 13px;background:#1c2026db;color:#fff;font-size:12px;border-radius:20px;pointer-events:none;white-space:nowrap}.viewcube-hint[hidden]{display:none}.m-label{padding:3px 8px;border-radius:4px;background:#1c2026e6;color:#fff;font-family:var(--mono);font-size:11.5px;white-space:nowrap;pointer-events:none;user-select:none;border:1px solid rgba(255,255,255,.16)}.m-label.pending{background:#1a6dd4eb}.m-dot{width:7px;height:7px;border-radius:50%;background:#fff;border:2px solid var(--accent);pointer-events:none}.tool-pane{display:flex;flex-direction:column;height:100%}.tool-pane[hidden]{display:none}.pane-body{padding:12px;overflow:auto;display:flex;flex-direction:column;gap:11px}.seg{display:flex;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r);padding:2px}.seg-b{flex:1;height:24px;border:0;background:transparent;border-radius:4px;font-family:inherit;font-size:11.5px;color:var(--tx-2);cursor:pointer}.seg-b.active{background:var(--surface);color:var(--accent);font-weight:500;box-shadow:0 1px 2px #0000000f}.seg.small{flex:none;width:108px}.hint-txt{font-size:11.5px;color:var(--tx-3);line-height:1.65;margin:0}.chk{display:flex;align-items:center;gap:7px;font-size:12.5px;cursor:pointer;color:var(--tx)}.chk input{width:14px;height:14px;accent-color:var(--accent);cursor:pointer;margin:0}.axis-row{display:grid;grid-template-columns:1fr;gap:6px;padding-bottom:9px;border-bottom:1px dashed var(--line)}.axis-row .chk{font-weight:500}.axis-row input[type=range]{width:100%}.axis-row .mini{justify-self:start}.axis-row.off input[type=range],.axis-row.off .mini{opacity:.38;pointer-events:none}input[type=range]{-webkit-appearance:none;appearance:none;height:3px;border-radius:2px;background:var(--line-2);cursor:pointer;margin:6px 0}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:13px;height:13px;border-radius:50%;background:var(--surface);border:2px solid var(--accent);cursor:pointer}.slider-row{display:grid;grid-template-columns:52px 1fr 38px;align-items:center;gap:8px}.sl-label{font-size:11.5px;color:var(--tx-2)}.sl-val{font-family:var(--mono);font-size:11.5px;color:var(--accent);text-align:right}.axis-pick{display:flex;align-items:center;gap:8px}.axis-pick[hidden]{display:none}.meas-list{display:flex;flex-direction:column;gap:4px;max-height:260px;overflow:auto}.meas-item{display:flex;align-items:center;gap:7px;padding:5px 8px;border-radius:4px;background:var(--surface-2);font-size:11.5px}.meas-item .mi-k{color:var(--tx-3);flex:none}.meas-item .mi-v{font-family:var(--mono);font-weight:500;flex:1}.meas-item .mi-x{border:0;background:none;color:var(--tx-3);cursor:pointer;font-size:14px;line-height:1;padding:0 2px}.meas-item .mi-x:hover{color:#d94040}.statusbar{height:var(--status-h);display:flex;align-items:center;gap:10px;padding:0 12px;background:var(--surface);border-top:1px solid var(--line);font-size:11.5px;color:var(--tx-2)}.statusbar span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.st-sep{width:1px;height:12px;background:var(--line);flex:none}.st-spacer{flex:1}#stTime{color:var(--tx-3);font-family:var(--mono);font-size:11px}::-webkit-scrollbar{width:9px;height:9px}::-webkit-scrollbar-thumb{background:#c8cfd9;border-radius:5px;border:2px solid var(--surface)}::-webkit-scrollbar-thumb:hover{background:#adb6c2}::-webkit-scrollbar-track{background:transparent}@media (max-width: 980px){.panel-left{width:208px}.panel-right{width:232px}.brand-tag{display:none}}@media (max-width: 860px){.offline-badge{padding:4px;gap:0}.offline-badge .ob-text{display:none}}.tb-mobile-only,.panel-close,.scrim{display:none}@media (max-width: 760px){:root{--topbar-h: calc(46px + env(safe-area-inset-top)) ;--status-h: calc(26px + env(safe-area-inset-bottom)) }.topbar{flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;padding:env(safe-area-inset-top) 8px 0;height:var(--topbar-h);scrollbar-width:none}.topbar::-webkit-scrollbar{display:none}.tb-sep,.brand-tag,.tb-spacer{display:none}.tb-mobile-only{display:inline-flex}.btn{height:32px;padding:0 12px}.btn.ico{padding:0 10px}select{height:32px}.canvas-host{touch-action:none}.canvas-host canvas{touch-action:none}html,body{overscroll-behavior:none}.panel-left,.panel-right{position:fixed;top:var(--topbar-h);bottom:var(--status-h);z-index:30;box-shadow:0 10px 34px #0003;transition:transform .26s ease}.panel-left{left:0;width:min(86vw,320px);border-right:1px solid var(--line);transform:translate(-105%)}.panel-left.open{transform:none}.panel-right{right:0;width:min(86vw,320px);border-left:1px solid var(--line);transform:translate(105%)}.panel-right[hidden]{display:flex}.panel-right:not([hidden]){transform:none}.scrim.show{display:block;position:fixed;inset:0;background:#141a216b;z-index:25}.panel-close{display:flex;align-items:center;justify-content:center;width:26px;height:26px;flex:none;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--tx-2);font-size:16px;line-height:1;cursor:pointer}.panel-close:hover{color:var(--accent);border-color:#f4c8b3}.panel-close-tr{position:absolute;top:7px;right:9px;z-index:6}#stTime{display:none}.statusbar{padding-bottom:env(safe-area-inset-bottom)}}