@font-face{font-family:"Playground Serif";src:local("Georgia");font-display:swap}:root{font-family:Trebuchet MS,Segoe UI,sans-serif;color:#30342a;background:#f4f2eb;font-synthesis:none;--paper: #f4f2eb;--ink: #30342a;--muted: #858779;--line: #dddfd3;--accent: #465838;--serif: "Playground Serif", "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif}*{box-sizing:border-box}body{margin:0}button,select,input{font:inherit}button,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.42}button,a,select,input,#canvas{outline-offset:4px}:focus-visible{outline:2px solid #708655}button,a{color:inherit}[hidden]{display:none!important}.masthead{height:77px;padding:0 36px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;font-size:21px;letter-spacing:-.7px;font-weight:700}.brand-mark{width:34px;height:34px;color:#36462b}.brand-divider{margin:0 15px;font-weight:400;color:#b0b2a4}.brand-subtitle{font-size:13px;font-weight:400;letter-spacing:.2px}.header-actions,.panel-actions{display:flex;align-items:center;gap:20px}.local-note{display:flex;align-items:center;gap:8px;font-size:11px;color:#73776a}.dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#7b955e;flex-shrink:0}.dot.edited{background:#ac9260}.dot.error{background:#b65a43}.dot.busy{background:#85956f;animation:pulse 1s ease-in-out infinite alternate}main{max-width:1920px;margin:0 auto;padding:34px 36px 0}.intro{display:flex;align-items:center;justify-content:space-between;margin-bottom:29px;gap:24px}.eyebrow{font-size:9px;font-weight:700;letter-spacing:1.8px;color:#7b806e;margin:0 0 10px}h1{font-family:var(--serif);font-size:clamp(26px,2.7vw,39px);font-weight:400;letter-spacing:-1.1px;margin:0}.intro-note{font-size:11px;line-height:1.8;color:#858777;margin:0;padding-right:5px}.workspace-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px}.language-switch{display:flex;gap:3px;padding:4px;border:1px solid #d9ddcf;background:#e8ebdf;border-radius:7px}.language-switch button{min-width:94px;border:none;padding:8px 17px;background:transparent;border-radius:4px;color:#7a806c;font-size:12px}.language-switch button[aria-pressed=true]{color:#38432c;background:#fdfdf7;box-shadow:0 1px 3px #36432815}.toolbar-right{display:flex;align-items:center;gap:14px}.example-label{color:#858777;font-size:11px}select{border:1px solid #d8dccd;border-radius:5px;color:#5c6350;background:#f8f8f0;padding:8px 27px 8px 11px;font-size:11px;max-width:200px}.primary-button{display:flex;align-items:center;justify-content:center;gap:9px;border:1px solid #465838;background:#465838;color:#fafbf4;padding:10px 15px;border-radius:5px;font-size:11px;font-weight:600;transition:background .15s}.primary-button:hover:not(:disabled){background:#34482b}.primary-button kbd{font-family:inherit;font-size:10px;font-weight:400;color:#ccd6bb;margin-left:17px}.primary-button svg{width:14px;height:14px}.workspace{display:grid;grid-template-columns:minmax(320px,.85fr) minmax(400px,1.35fr);border:1px solid #d3d8c7;border-radius:8px;overflow:hidden;height:max(520px,calc(100dvh - 293px));box-shadow:0 6px 24px #3b443006}.source-panel,.preview-panel{min-width:0;min-height:0;display:flex;flex-direction:column;background:#fbfbf5}.source-panel{border-right:1px solid #d3d8c7}.panel-heading{height:53px;min-height:53px;border-bottom:1px solid var(--line);padding:0 18px;display:flex;align-items:center;justify-content:space-between;gap:10px}h2{font-size:12px;font-weight:500;margin:0;display:flex;align-items:center;gap:10px}.panel-index{color:#999f8c;font-size:10px;font-family:Consolas,monospace}.engine-tag{font-size:8px;letter-spacing:1px;color:#7f8e64;border:1px solid #d4ddc5;border-radius:3px;padding:3px 5px;margin-left:1px}.panel-actions{gap:16px}.icon-button{border:none;background:transparent;padding:5px;display:flex;align-items:center;justify-content:center;color:#818977;border-radius:4px}.icon-button:hover:not(:disabled){background:#e7ecdd;color:#405332}.live-label{display:flex;align-items:center;gap:7px;font-size:10px;color:#848977;cursor:pointer;position:relative}.live-label input{position:absolute;opacity:0;width:27px;height:16px;left:0;margin:0}.switch{width:25px;height:14px;border-radius:12px;background:#d1d5c6;position:relative;transition:background .15s;pointer-events:none}.switch:after{content:"";position:absolute;width:10px;height:10px;top:2px;left:2px;background:#f6f8ee;border-radius:50%;transition:transform .15s}.live-label input:checked+.switch{background:#8d9f74}.live-label input:checked+.switch:after{transform:translate(11px)}.live-label input:focus-visible+.switch{outline:2px solid #708655;outline-offset:3px}.render-options{display:flex;gap:10px;align-items:center;height:40px;min-height:40px;padding:0 18px;border-bottom:1px solid #e6e8dd;background:#f7f8ef;color:#8d9380;font-size:10px}.render-options select{background:transparent;padding:4px 20px 4px 7px;border-color:#dfe3d4;font-size:10px}.sketch-label{display:flex;align-items:center;gap:5px;margin-left:auto;cursor:pointer}input[type=checkbox]{accent-color:var(--accent)}#editor{flex:1;overflow:hidden;min-height:0}.source-footer,.preview-footer{min-height:34px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:9px;color:#939987;border-top:1px solid var(--line);background:#f6f7ee}.source-footer{font-family:Consolas,Liberation Mono,monospace}.text-button{border:none;background:transparent;display:flex;align-items:center;gap:5px;padding:6px 0;color:#768068;font-size:10px}.text-button svg{width:13px;height:13px}.text-button:hover:not(:disabled){color:#354c29}#canvas{position:relative;flex:1;overflow:hidden;min-height:250px;cursor:grab;touch-action:none;background-color:#f8f9f2;background-image:radial-gradient(#a8b29855 .7px,transparent .7px);background-size:18px 18px}#canvas.dragging{cursor:grabbing}#diagram-stage{position:absolute;inset:30px 30px 62px;transform-origin:center;will-change:transform}#diagram-stage>svg{display:block;width:100%;height:100%;overflow:visible}.canvas-coordinate{position:absolute;z-index:1;pointer-events:none;font-family:Consolas,Liberation Mono,monospace;font-size:8px;color:#9aa38d;letter-spacing:1px}.coordinate-top{top:19px;left:20px}.coordinate-bottom{bottom:20px;left:20px;font-size:7px;letter-spacing:.6px}.zoom-controls{position:absolute;right:17px;bottom:14px;display:flex;align-items:center;gap:3px;padding:4px;background:#fffff7ee;border:1px solid #dce1d0;border-radius:5px;box-shadow:0 3px 8px #34412a08;cursor:default}.zoom-controls .icon-button{padding:5px}.zoom-controls svg{width:14px;height:14px}#zoom-value{font:9px Consolas,Liberation Mono,monospace;min-width:35px;text-align:center;color:#7f8970}.control-divider{width:1px;height:15px;background:#dce1d0;margin:0 3px}#empty-state{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;pointer-events:none}.empty-symbol{font-family:var(--serif);font-size:40px;color:#bcc7a9;margin-bottom:14px}#empty-state p{font-family:var(--serif);font-size:21px;color:#89967a;margin:0 0 9px}#empty-state span{color:#a5ad9a;font-size:11px}#busy-overlay{position:absolute;top:14px;right:17px;display:flex;align-items:center;gap:8px;background:#fffff3ed;border:1px solid #dce1d0;padding:8px 11px;border-radius:5px;font-size:10px;color:#7e896d;pointer-events:none}.spinner{width:12px;height:12px;border:1.5px solid #dce4ce;border-top-color:#859e60;border-radius:50%;animation:spin .8s linear infinite}#status{display:flex;align-items:center;gap:7px}#metrics{font-family:Consolas,Liberation Mono,monospace}.error-panel{padding:14px 18px;background:#fbede4;color:#9b4f35;border-top:1px solid #e5caba;max-height:180px;overflow:auto}.error-panel strong{font-size:11px;font-weight:600}.error-panel pre{white-space:pre-wrap;overflow-wrap:anywhere;font:10px/1.6 Consolas,monospace;margin-bottom:0}.page-footer{display:flex;justify-content:space-between;padding:17px 1px 20px;font-size:9px;color:#939886}.page-footer>span:first-child{font-family:var(--serif);font-style:italic;font-size:12px}.page-footer a{text-decoration:none}.page-footer a:hover{text-decoration:underline}.footer-separator{padding:0 12px;color:#b4baa8}dialog{padding:0;border:1px solid #ced5be;border-radius:9px;background:#f8f9f1;color:var(--ink);width:min(700px,calc(100vw - 32px));max-height:85dvh;box-shadow:0 30px 100px #25321c30}dialog::backdrop{background:#29311f55;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:24px;border-bottom:1px solid var(--line)}.dialog-heading h2{font-family:var(--serif);font-size:25px}#converted-source{padding:24px;margin:0;font:12px/1.8 Consolas,Liberation Mono,monospace;overflow:auto;max-height:50dvh;white-space:pre-wrap;overflow-wrap:anywhere;background:#fdfdf7}.dialog-footer{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:18px 24px;border-top:1px solid var(--line)}.dialog-footer>span{font-size:10px;color:#889278}.help-content{padding:8px 24px 20px;font-size:13px;line-height:1.8;color:#737c64}.help-content strong{color:#445339}#toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%);border-radius:6px;padding:12px 18px;background:#36482c;color:#f6f8ee;font-size:12px;box-shadow:0 4px 20px #1e2a1933;z-index:10}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{to{opacity:.35}}@media(min-width:1600px){main{padding-top:46px}.intro{margin-bottom:37px}.workspace{height:max(560px,calc(100dvh - 315px))}}@media(max-width:1000px){.masthead{padding:0 22px}main{padding:26px 22px 0}.intro-note,.example-label{display:none}.workspace{grid-template-columns:minmax(290px,1fr) minmax(340px,1.15fr)}.panel-heading{padding:0 12px}.panel-actions{gap:10px}.primary-button kbd,#save-status{display:none}}@media(max-width:720px){.masthead{height:65px;padding:0 16px}.brand-subtitle{font-size:11px}.brand-divider{margin:0 9px}.brand{gap:9px;font-size:19px}.local-note{display:none}main{padding:24px 14px 0}h1{font-size:28px}.intro{margin-bottom:22px}.eyebrow{font-size:8px;letter-spacing:1.3px}.workspace-toolbar{flex-wrap:wrap;gap:10px}.toolbar-right{flex:1;gap:8px;justify-content:flex-end}.toolbar-right select{max-width:150px}.language-switch button{min-width:64px;padding:8px 9px}.primary-button{padding:10px}.workspace{display:flex;flex-direction:column;height:auto}.source-panel{height:370px;border-right:none;border-bottom:1px solid #d3d8c7}.preview-panel{height:440px}.page-footer{gap:15px;font-size:8px}.page-footer>span:first-child{display:none}.coordinate-bottom{font-size:6px}.dialog-footer{flex-wrap:wrap}.intro{animation:none}}@media(max-width:430px){.toolbar-right{flex-basis:100%;justify-content:space-between}.toolbar-right select{max-width:180px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}.brand-d2{color:#657843}.render-options{flex-wrap:wrap;height:auto;min-height:40px;padding-top:7px;padding-bottom:7px;gap:8px}.example-description{margin:0;padding:8px 18px;color:#747d66;background:#fcfcf6;border-bottom:1px solid #e6e8dd;font-size:10px;line-height:1.5}.panel-actions{gap:10px}.panel-actions select{font-size:10px;padding:5px 18px 5px 6px;max-width:95px}#export-scale{max-width:48px}@media(max-width:720px){.brand-subtitle,.brand-divider{display:none}.panel-actions{gap:7px}#show-d2 span{display:none}.panel-actions select{max-width:78px}.render-options{padding-left:12px;padding-right:12px}.example-description{padding:7px 12px}}#export-scale{width:48px;flex-shrink:0;padding-left:4px;padding-right:2px}