.app{max-width:1100px;margin:0 auto;padding:1.25rem 1rem 2rem}.header h1{margin:0 0 .35rem;font-size:1.65rem;font-weight:600;letter-spacing:-.02em}.subtitle{margin:0;color:#9aa7b8;font-size:.95rem;max-width:52rem}.subtitle a{color:#8ec8ff;text-decoration:underline;text-underline-offset:2px}.toolbar{display:flex;align-items:center;gap:.75rem;margin:1.25rem 0 .75rem;flex-wrap:wrap}.toolbar-actions{align-items:center}.toolbar-gap{flex:1;min-width:.5rem}.btn{font:inherit;padding:.45rem 1rem;border-radius:8px;border:1px solid #3d4d60;cursor:pointer;color:#e8ecf1;background:#1c2430}.btn:hover{background:#243044}.btn-primary{border-color:#3d7dd9;background:#1e3a5f}.btn-primary:hover{background:#254a78}.btn-secondary{border-color:#5a6575}.wind-label{font-size:.9rem;color:#c4cdd8}.toolbar input[type=range]{width:min(320px,70vw);accent-color:#4d9fff}.wind-value{font-variant-numeric:tabular-nums;min-width:3rem;color:#8ec8ff;font-size:.9rem}.canvas-wrap{border-radius:10px;overflow:hidden;border:1px solid #2a3340;box-shadow:0 12px 40px #00000059}.scene-stack{position:relative;width:100%;aspect-ratio:760 / 395}.flow-root{position:absolute;top:0;right:0;bottom:0;left:0}.flow-vis-badge{position:absolute;top:.65rem;left:.65rem;z-index:2;padding:.28rem .65rem;border-radius:6px;font-size:.78rem;font-weight:500;letter-spacing:.02em;color:#dce6f2;background:#0c121cb8;border:1px solid rgba(100,130,170,.35);pointer-events:none;-webkit-user-select:none;user-select:none}.flow-error{position:absolute;top:.75rem;left:.75rem;right:.75rem;z-index:3;padding:.5rem .75rem;border-radius:6px;background:#501e1eeb;border:1px solid #a44;color:#fec;font-size:.85rem}.flow-canvas{display:block;position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;cursor:crosshair}.scene{display:block;vertical-align:middle;cursor:default;-webkit-user-select:none;user-select:none}.scene-overlay{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none}.scene-overlay .handle-outer{pointer-events:auto}.handle-outer{fill:transparent;cursor:grab}.handle-outer:active{cursor:grabbing}.footer{margin-top:1.75rem;padding:1.1rem 1rem .25rem;border-top:1px solid rgba(58,72,92,.55);text-align:center}.footer-inner{margin:0;display:inline-flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.35rem .5rem;max-width:36rem;margin-inline:auto;font-size:.8125rem;line-height:1.5;letter-spacing:.01em;color:#8b98aa}.footer-sep{color:#4f5d73;-webkit-user-select:none;user-select:none}:root{font-family:Segoe UI,system-ui,sans-serif;line-height:1.5;font-weight:400;color:#e8ecf1;background-color:#0d1117}*{box-sizing:border-box}body{margin:0;min-height:100vh}#root{min-height:100vh}