:root{--ink:#20252b;--muted:#6f7882;--paper:#f4f1eb;--card:#fff;--accent:#ef6b47;--accent2:#f6c85f;--teal:#2f7c78;--line:#d9d5ce;--shadow:0 16px 40px rgba(43,40,34,.09)}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Manrope,system-ui,sans-serif}.app-shell{max-width:1440px;margin:auto;min-height:100vh;padding:0 36px 40px}.topbar{height:86px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;color:inherit;text-decoration:none}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--ink);color:#fff;font-weight:800;font-size:22px;transform:rotate(-3deg)}.brand span:last-child{display:flex;flex-direction:column;line-height:1.1}.brand small{color:var(--muted);font-size:11px;margin-top:4px}.progress-summary{display:flex;align-items:center;gap:14px;font-size:12px;color:var(--muted)}.progress-track{width:150px;height:7px;background:#dedad3;border-radius:9px;overflow:hidden}.progress-track i{display:block;height:100%;width:0;background:var(--teal);transition:.3s}.icon-btn,.task-nav button{border:1px solid var(--line);background:transparent;border-radius:50%;width:38px;height:38px;font-weight:700;cursor:pointer}.categories{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;padding:26px 0 20px}.category{padding:14px 15px;border:1px solid var(--line);background:transparent;border-radius:14px;text-align:left;cursor:pointer;transition:.2s;color:var(--muted);font:600 13px Manrope}.category span{display:block;color:inherit;font-size:10px;margin-bottom:3px}.category.active{background:var(--ink);color:#fff;border-color:var(--ink);box-shadow:var(--shadow);transform:translateY(-2px)}.category.done{border-color:#83aaa7}.task-heading{display:flex;align-items:end;justify-content:space-between;margin:15px 0 20px}.eyebrow{text-transform:uppercase;letter-spacing:.14em;color:var(--accent);font-size:10px;font-weight:800}.task-heading h1{font-size:30px;letter-spacing:-.04em;margin:5px 0 0}.task-nav{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px}.task-nav button:disabled{opacity:.3;cursor:not-allowed}.workspace{display:grid;grid-template-columns:minmax(390px,.9fr) minmax(480px,1.1fr);gap:18px}.panel{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);overflow:hidden}.task-panel{padding:22px}.panel-title{display:flex;align-items:center;justify-content:space-between;font-weight:800;font-size:13px;margin-bottom:14px}.difficulty{padding:5px 9px;border-radius:20px;background:#f1eee8;color:var(--muted);font-size:10px}.task-panel p{min-height:48px;color:#525b64;font-size:14px;line-height:1.55}.legend{display:flex;gap:16px;font-size:10px;color:var(--muted);margin:14px 0}.legend span{display:flex;align-items:center;gap:5px}.dot{width:9px;height:9px;border-radius:3px}.robot-dot{background:var(--accent)}.target-dot{background:var(--accent2)}.wall-sample{width:14px;height:3px;background:var(--ink)}.board-wrap{display:grid;place-items:center;background:#f7f5f1;border-radius:14px;padding:18px;min-height:330px}.board{display:grid;position:relative;filter:drop-shadow(0 8px 12px rgba(0,0,0,.05))}.cell{width:45px;height:45px;background:#fff;border:1px solid #d8d4cd;position:relative}.cell.paint{background:#f7ce6f}.cell.target:after{content:'';position:absolute;inset:14px;border:2px dashed #d8991f;border-radius:50%}.cell.wall-t{border-top:4px solid var(--ink)}.cell.wall-r{border-right:4px solid var(--ink)}.cell.wall-b{border-bottom:4px solid var(--ink)}.cell.wall-l{border-left:4px solid var(--ink)}.robot{position:absolute;inset:7px;border-radius:9px;background:var(--accent);display:grid;place-items:center;z-index:2;box-shadow:0 4px 9px rgba(239,107,71,.35);transition:.18s}.robot:before{content:'•  •';color:#fff;font-weight:800;letter-spacing:3px;font-size:11px}.secondary-btn{width:100%;margin-top:14px;border:1px solid var(--line);background:#fff;border-radius:10px;padding:11px;font:600 12px Manrope;cursor:pointer}.editor-panel{display:flex;flex-direction:column;padding:22px}.text-btn{border:0;background:none;color:var(--teal);font:600 11px Manrope;cursor:pointer}.editor-wrap{display:grid;grid-template-columns:42px 1fr;background:#20252b;border-radius:13px;overflow:hidden;height:390px}.line-numbers{padding:17px 9px;text-align:right;color:#68717c;background:#1a1e23;font:13px/1.65 'Source Code Pro';white-space:pre}.editor-wrap textarea{border:0;outline:0;resize:none;background:#20252b;color:#e9edf0;padding:17px 18px;font:14px/1.65 'Source Code Pro',monospace;tab-size:2}.editor-actions{display:flex;align-items:center;justify-content:space-between;margin-top:14px}.speed{color:var(--muted);font-size:11px;display:flex;align-items:center;gap:9px}.speed input{accent-color:var(--teal);width:90px}.run-btn{border:0;border-radius:11px;background:var(--teal);color:#fff;padding:12px 24px;font:700 13px Manrope;cursor:pointer;box-shadow:0 7px 15px rgba(47,124,120,.2)}.run-btn:disabled{opacity:.6}.message{min-height:38px;margin-top:12px;padding:10px 12px;border-radius:9px;font-size:12px;display:none}.message.show{display:block}.message.error{background:#fff0ed;color:#ae462d}.message.success{background:#e8f5ef;color:#247055}dialog{max-width:670px;border:0;border-radius:20px;padding:28px;box-shadow:0 30px 90px #0005}dialog::backdrop{background:#171b1dcc}.dialog-close{float:right;border:0;background:none;font-size:26px;cursor:pointer}.help-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.help-grid code{background:#20252b;color:#e9edf0;border-radius:10px;padding:14px;line-height:1.5;font-size:12px}dialog p{color:var(--muted);font-size:13px;line-height:1.6}
@media(max-width:900px){.app-shell{padding:0 18px 30px}.workspace{grid-template-columns:1fr}.categories{grid-template-columns:1fr 1fr}.progress-summary{display:none}.task-heading h1{font-size:24px}.board-wrap{min-height:280px}.editor-wrap{height:340px}}
@media(max-width:520px){.categories{display:flex;overflow-x:auto}.category{min-width:145px}.task-heading{align-items:start}.cell{width:38px;height:38px}.workspace{grid-template-columns:minmax(0,1fr)}.help-grid{grid-template-columns:1fr}}
.variant-switch{display:flex;align-items:center;gap:7px;margin:8px 0 12px;color:var(--muted);font-size:10px}.variant-switch button{width:29px;height:25px;border:1px solid var(--line);border-radius:7px;background:#fff;font:700 11px Manrope;cursor:pointer}.variant-switch button.active{background:var(--teal);border-color:var(--teal);color:#fff}.variant-switch small{margin-left:auto;color:var(--teal);font-weight:700}
.variant-switch[hidden]{display:none!important}.task-brief{padding:18px 22px;margin-bottom:18px}.task-brief .panel-title{margin-bottom:5px}.task-brief p{margin:0;color:#525b64;font-size:13px;line-height:1.55}.task-panel>.panel-title{margin-bottom:6px}.board-wrap.multi{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:14px;padding:12px}.board-case{min-width:0;display:grid;justify-items:center;gap:7px}.board-case-label{font-size:10px;font-weight:800;color:var(--teal);text-transform:uppercase;letter-spacing:.08em}.board-wrap.multi .cell{width:25px;height:25px}.board-wrap.multi .robot{inset:3px;border-radius:5px}.board-wrap.multi .robot:before{font-size:7px;letter-spacing:1px}.board-wrap.multi .cell.target:after{inset:7px}
@media(max-width:600px){.board-wrap.multi{grid-template-columns:1fr}.board-wrap.multi .cell{width:30px;height:30px}}
.task-dots{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:0 2px 14px;scrollbar-width:thin}.task-dot{flex:0 0 31px;width:31px;height:31px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--muted);font:700 11px Manrope;cursor:pointer;transition:.18s}.task-dot:hover,.task-dot.current{border-color:var(--ink);color:var(--ink);transform:translateY(-1px)}.task-dot.success{background:#3b956d;border-color:#3b956d;color:#fff}.task-dot.failed{background:#d95f4a;border-color:#d95f4a;color:#fff}.task-dot.current{box-shadow:0 0 0 3px rgba(32,37,43,.12)}
/* Цвета и редактор в стиле классической среды КуМир */
.board-wrap{background:#22952b;border:1px solid #16771e}.cell{background:#22952b;border:1px solid #b8d20a}.cell.paint{background:#aeb5b9}.cell.target:after{border-color:#f0ee33}.cell.wall-t{border-top-color:#c2db00}.cell.wall-r{border-right-color:#c2db00}.cell.wall-b{border-bottom-color:#c2db00}.cell.wall-l{border-left-color:#c2db00}.robot{inset:9px;background:#e5e7ea;border:2px solid #111;border-radius:0;box-shadow:none;transform:rotate(45deg)}.robot:before{content:''}.board-wrap.multi .robot{inset:5px;border-radius:0}.board-case-label{color:#f4f7e7;background:#187d21;padding:4px 10px;border-radius:12px}
.editor-wrap{grid-template-columns:52px 1fr;background:#fff;border:2px solid #1786d3;border-radius:2px}.line-numbers{background:#f7f7f7;color:#202020;border-right:1px solid #b9c2cb;padding:14px 10px;font:600 15px/1.65 'Source Code Pro',monospace}.code-stack{position:relative;min-width:0;height:100%;overflow:hidden;background:#fff}.code-stack pre,.code-stack textarea{position:absolute;inset:0;margin:0;border:0;padding:14px 18px;white-space:pre;overflow:auto;font:600 15px/1.65 'Source Code Pro',monospace;tab-size:2}.code-stack pre{z-index:1;color:#080808;pointer-events:none}.code-stack textarea{z-index:2;resize:none;background:transparent;color:transparent;-webkit-text-fill-color:transparent;caret-color:#111;outline:0}.code-stack textarea::selection{background:rgba(38,133,220,.28)}.syn-keyword{color:#050505;font-weight:700}.syn-command{color:#001fd1;font-weight:700}.syn-robot{color:#00a523;font-weight:700}.syn-comment{color:#7a7a7a;font-weight:400}
.code-stack pre,.line-numbers{overflow:hidden}

.constructor-link{font-size:14px;color:var(--teal);margin:0 14px}.topbar{gap:12px;flex-wrap:wrap;height:auto;min-height:86px;padding:14px 0}.board-wrap{overflow:auto}.board-case{overflow:auto;max-width:100%}#loadStatus{padding:20px;background:#fff0d6;border-radius:12px;line-height:1.6}[hidden]{display:none!important}@media(max-width:600px){.constructor-link{order:4;margin:0;width:100%}}