.brach-app{display:grid;gap:1rem;min-width:0}.brach-app .panel-line{padding:clamp(.8rem,2vw,1.4rem);min-width:0}.brach-controls label{display:grid;gap:.4rem;min-width:0;color:var(--muted)}.brach-fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem;margin-top:1rem}.brach-app input,.brach-app select,.brach-app button,.brach-app a{min-height:44px;max-width:100%;font:inherit}.brach-app input,.brach-app select{width:100%;background:var(--bg-2);border:1px solid var(--line);color:var(--text);padding:.5rem}.brach-actions{display:flex;flex-wrap:wrap;gap:.6rem}.brach-app button,.brach-app a{padding:.6rem .9rem;border:1px solid var(--line-strong);background:var(--panel-strong);color:var(--cyan);cursor:pointer}.brach-app button:disabled,.brach-app input:disabled{opacity:.45;cursor:default}.brach-app :focus-visible{outline:2px solid var(--amber);outline-offset:3px}.brach-app h2{font-size:clamp(1.05rem,2vw,1.4rem);overflow-wrap:anywhere}.brach-view canvas{display:block;width:100%;height:auto;aspect-ratio:1000/560;background:#071114;border:1px solid var(--line);touch-action:pan-y}.brach-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.6rem}.brach-result{padding:.7rem;border-left:3px solid var(--bead);background:var(--panel);min-width:0}.brach-result strong,.brach-result span{display:block;overflow-wrap:anywhere}.brach-app pre{white-space:pre-wrap;overflow-wrap:anywhere;max-width:100%;font-size:.85rem}.brach-app summary{min-height:44px;cursor:pointer}.brach-app [hidden]{display:none!important}.page-brachistochrone .lab-hero h1{font-size:clamp(1.6rem,3vw,2.8rem)}@media(max-width:600px){.brach-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.brach-results{grid-template-columns:1fr}.brach-actions>*{flex:1 1 130px}.brach-view canvas{aspect-ratio:1.25}.brach-app select{font-size:.9rem}}