.lesson-exercise{--lx-bg:#f6f7f9;--lx-ink:#17191e;--lx-2:#3a3f4a;--lx-3:#5f6573;--lx-line:#d9dbe0;--lx-accent:#1849b8;--lx-on-accent:#fff;--lx-ok:#0a6344;--lx-bad:#a3242a;--lx-chip:#e8eefc;background:var(--lx-bg);border:1px solid var(--lx-line);color:var(--lx-2);border-radius:14px;margin-top:40px;padding:24px}:root[data-theme=dark] .lesson-exercise{--lx-bg:#141619;--lx-ink:#f2f3f5;--lx-2:#c6cad2;--lx-3:#a3abb8;--lx-line:#2c3036;--lx-accent:#8fb0ff;--lx-on-accent:#0b0d10;--lx-ok:#5fd3a2;--lx-bad:#ff9a9a;--lx-chip:#1c2433}.lesson-exercise-k{background:var(--lx-chip);color:var(--lx-accent);border-radius:999px;align-items:center;gap:8px;margin:0;padding:4px 10px;font-size:14px;font-weight:600;display:inline-flex}.lesson-exercise-k svg{width:16px;height:16px}.lesson-exercise h2{color:var(--lx-ink);margin:20px 0 0;font-size:22px;line-height:1.3}.lesson-exercise-how,.lesson-exercise-brief{max-width:68ch;color:var(--lx-2);margin:10px 0 0;font-size:16px;line-height:1.6}.lesson-exercise .lesson-exercise-brief{margin-top:20px}.lesson-exercise-mount{gap:14px;margin-top:18px;display:grid}.lesson-exercise-state{color:var(--lx-3);margin:16px 0 0;font-size:15px;font-weight:600}.lesson-exercise-state.is-done{color:var(--lx-ok)}.lesson-exercise-state.is-wrong{color:var(--lx-bad)}.lesson-exercise-state:before{content:"";vertical-align:1px;background:currentColor;border-radius:50%;width:9px;height:9px;margin-right:8px;display:inline-block}.wpx{--wp-ink:#1d2327;--wp-2:#50575e;--wp-line:#dcdcde;--wp-bg:#f6f7f7;--wp-blue:#2271b1;--wp-blue-dark:#135e96;--wp-red:#b32d2e;--wp-green:#00733a;color:var(--wp-ink);border:1px solid var(--wp-line);background:#fff;border-radius:4px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen-Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif;font-size:14px;line-height:1.45;overflow:hidden;box-shadow:0 5px 15px #0000002e}.wpx-head{border-bottom:1px solid var(--wp-line);justify-content:space-between;align-items:center;min-height:50px;padding:0 16px;display:flex}.wpx-title{color:var(--wp-ink);margin:0;font-size:22px;font-weight:600}.wpx-head-icons{color:var(--wp-2);letter-spacing:6px;font-size:20px}.wpx-body{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);display:grid}.wpx-media{background:var(--wp-bg);border-right:1px solid var(--wp-line);align-content:start;justify-items:center;gap:12px;padding:16px;display:grid}.wpx-thumb{width:100%}.wpx-thumb svg{width:100%;height:auto;display:block;box-shadow:0 0 0 1px #00000014}.wpx-btn-fake{border:1px solid var(--wp-blue);color:var(--wp-blue);background:#f6f7f7;border-radius:3px;padding:4px 10px;font-size:14px;display:inline-block}.wpx-info{background:#f6f7f7;padding:12px 16px 16px}.wpx-details{border-bottom:1px solid var(--wp-line);gap:2px;margin:0 0 12px;padding-bottom:12px;display:grid}.wpx-details div{gap:6px;display:flex}.wpx-details dt{color:var(--wp-ink);font-weight:600}.wpx-details dd{color:var(--wp-2);margin:0}.wpx-settings,.wpx-compat{gap:10px;display:grid}.wpx-row{grid-template-columns:120px minmax(0,1fr);align-items:start;gap:8px;display:grid}.wpx-row>label,.wpx-label{text-align:right;color:var(--wp-2);padding-top:6px;font-size:14px}.wpx-input{box-sizing:border-box;width:100%;min-height:32px;color:var(--wp-ink);font:inherit;background:#fff;border:1px solid #8c8f94;border-radius:4px;padding:4px 8px}.wpx-input:focus{border-color:var(--wp-blue);outline:2px solid var(--wp-blue);outline-offset:0}.wpx-input[readonly]{background:#f0f0f1}.wpx-help{color:var(--wp-2);margin:4px 0 0;font-size:14px}.wpx-status{border-left:4px solid var(--wp-red);color:var(--wp-ink);background:#fff;margin:0;padding:6px 10px;font-size:14px}.wpx-status.is-ok{border-left-color:var(--wp-green)}.wpx-foot{border-top:1px solid var(--wp-line);background:#fff;flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:12px;padding:12px 16px;display:flex}.wpx-notice{color:var(--wp-ink);flex:260px;margin:0;font-size:14px}.wpx-notice:empty{display:none}.wpx-notice.is-error{border-left:4px solid var(--wp-red);background:#fcf0f1;padding:8px 12px}.wpx-notice.is-ok{border-left:4px solid var(--wp-green);background:#edfaef;padding:8px 12px}.wpx-btn-primary{border:1px solid var(--wp-blue);background:var(--wp-blue);color:#fff;cursor:pointer;border-radius:3px;min-height:40px;padding:0 16px;font-family:inherit;font-size:14px;font-weight:600;line-height:1}.wpx-btn-primary:hover{background:var(--wp-blue-dark)}.wpx-btn-primary:focus-visible{outline:2px solid var(--wp-blue);outline-offset:2px;box-shadow:inset 0 0 0 1px #fff}@media (width<=720px){.wpx-body{grid-template-columns:1fr}.wpx-media{border-right:0;border-bottom:1px solid var(--wp-line)}.wpx-row{grid-template-columns:1fr;gap:4px}.wpx-row>label,.wpx-label{text-align:left;padding-top:0}.wpx-label:empty{display:none}.wpx-title{font-size:18px}}.wt{gap:12px;display:grid}.wt-video{aspect-ratio:16/10;background:#000;border-radius:10px;width:100%;height:auto;display:block}.wt-about,.wt-note{color:var(--lx-3);margin:0;font-size:14px}.wt-actions{gap:12px;display:flex}.wt-done{border:1px solid var(--lx-accent);background:var(--lx-accent);min-height:44px;color:var(--lx-on-accent);cursor:pointer;border-radius:999px;padding:0 18px;font-family:inherit;font-size:15px;font-weight:600;line-height:1}.wt-done:disabled{color:var(--lx-ok);border-color:var(--lx-ok);cursor:default;background:0 0}.wt-done:focus-visible,.wt-jump:focus-visible{outline:2px solid var(--lx-accent);outline-offset:2px}.wt-transcript summary{cursor:pointer;min-height:44px;color:var(--lx-accent);align-items:center;font-size:15px;font-weight:600;display:inline-flex}.wt-steps{gap:10px;margin:8px 0 0;padding-left:0;list-style:none;display:grid}.wt-steps li{color:var(--lx-2);grid-template-columns:64px minmax(0,1fr);align-items:baseline;gap:12px;max-width:72ch;font-size:16px;line-height:1.55;display:grid}.wt-jump{border:1px solid var(--lx-line);min-height:32px;color:var(--lx-accent);font-variant-numeric:tabular-nums;cursor:pointer;background:0 0;border-radius:6px;padding:0 8px;font-family:inherit;font-size:14px;font-weight:600;line-height:1}@media (prefers-reduced-motion:reduce){.wt-video{scroll-behavior:auto}}.ac-ask{border:1px solid var(--lx-line);background:var(--lx-bg);color:var(--lx-2);--lx-bg:#eef3ff;--lx-ink:#17191e;--lx-2:#3a3f4a;--lx-line:#c9d6f5;--lx-accent:#1849b8;--lx-on-accent:#fff;--lx-ok:#0a6344;--lx-bad:#a3242a;border-radius:14px;margin-top:32px;padding:22px 24px}:root[data-theme=dark] .ac-ask{--lx-bg:#111a33;--lx-ink:#f2f3f5;--lx-2:#c6cad2;--lx-line:#2a3a66;--lx-accent:#8fb0ff;--lx-on-accent:#0b0d10;--lx-ok:#5fd3a2;--lx-bad:#ff9a9a}.ac-ask h2,.ac-ask-t{color:var(--lx-ink);margin:0;font-size:20px;font-weight:700;line-height:1.3}.ac-ask p{max-width:60ch;margin:6px 0 0;font-size:16px;line-height:1.5}.ac-ask form{flex-wrap:wrap;align-items:end;gap:10px;margin-top:14px;display:flex}.ac-ask-field{flex:260px;gap:6px;display:grid}.ac-ask label{color:var(--lx-ink);font-size:15px;font-weight:600}.ac-ask[hidden]{display:none}.ac-ask input[type=email]{color:#111;background:#fff;border:1px solid #6b7280;border-radius:10px;min-height:46px;padding:0 14px;font-family:inherit;font-size:16px;line-height:1.2}:root[data-theme=dark] .ac-ask input[type=email]{color:#f2f3f5;background:#0b0d10;border-color:#8a93a3}.ac-ask button{cursor:pointer;border-radius:999px;min-height:46px;padding:0 18px;font-family:inherit;font-size:15px;font-weight:600;line-height:1}.ac-ask button[type=submit]{border:1px solid var(--lx-accent);background:var(--lx-accent);color:var(--lx-on-accent)}.ac-ask [data-ask-dismiss]{border:1px solid var(--lx-line);color:var(--lx-ink);background:0 0}.ac-ask input:focus-visible,.ac-ask button:focus-visible{outline:2px solid var(--lx-accent);outline-offset:2px}.ac-ask-status{color:var(--lx-ok);margin:10px 0 0;font-size:15px;font-weight:600}.ac-ask-status.is-wrong{color:var(--lx-bad)}.ac-ask-status:empty{display:none}.ac-ask-fine{color:var(--lx-2);font-size:14px!important}.ac-ask.is-sent form,.ac-ask.is-sent .ac-ask-fine{display:none}@media (width<=560px){.lesson-exercise{padding:18px 14px}.ac-ask{padding:18px 16px}}:root[data-theme=dark] .wpx .wpx-input{color:#1d2327;background:#fff;border-color:#8c8f94}:root[data-theme=dark] .wpx .wpx-input[readonly]{background:#f0f0f1}.sim-sr{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.sim-topbar{flex-wrap:wrap;gap:12px}.sim-doc-t{font-size:18px}.sim-saved{color:var(--wp-2);font-size:14px}.sim-clock{color:var(--wp-ink);font-variant-numeric:tabular-nums;background:#f0f6fc;border:1px solid #c5d9ed;border-radius:3px;padding:4px 10px;font-size:14px;font-weight:600}.sim-clock.is-over{background:#fcf9e8;border-color:#dba617}.sim-cols{grid-template-columns:minmax(0,1fr) 260px;display:grid}.sim-canvas{background:#fff;min-width:0;padding:16px}.sim-side{border-left:1px solid var(--wp-line);background:#fff;align-content:start;gap:8px;padding:14px 16px;display:grid}.sim-side-t{color:var(--wp-ink);text-transform:uppercase;letter-spacing:.02em;margin:0;font-size:14px;font-weight:600}.sim-side-h{color:var(--wp-2);margin:0;font-size:14px}.sim-side-l{color:var(--wp-ink);font-size:14px;font-weight:600}.sim-order{gap:6px;margin:0;padding:0;list-style:none;display:grid}.sim-order-row{border:1px solid var(--wp-line);cursor:grab;background:#fff;border-radius:2px;grid-template-columns:22px minmax(0,1fr) auto;align-items:center;gap:8px;padding:8px;display:grid}.sim-order-row:hover{border-color:var(--wp-blue)}.sim-order-row.is-dragging{opacity:.5;border-style:dashed}.sim-grip{color:var(--wp-2);letter-spacing:-2px;text-align:center;font-size:14px}.sim-move-pair{gap:4px;display:inline-flex}.sim-move{width:44px;height:44px;color:var(--wp-ink);cursor:pointer;background:#f6f7f7;border:1px solid #8c8f94;border-radius:3px;font-family:inherit;font-size:18px;line-height:1}.sim-move:disabled{opacity:.4;cursor:default}.sim-move:focus-visible,.sim-link:focus-visible,.sim-btn:focus-visible{outline:2px solid var(--wp-blue);outline-offset:2px}.sim-block{grid-template-columns:auto minmax(0,1fr);align-items:baseline;gap:2px 10px;display:grid}.sim-block-t{color:var(--wp-ink);font-weight:600}.sim-block-l1 .sim-block-t{font-size:22px}.sim-block-l2 .sim-block-t{font-size:18px}.sim-block-l3 .sim-block-t{font-size:16px}.sim-block-p{color:var(--wp-2);grid-column:2;font-size:14px}.sim-tag{color:#fff;text-align:center;background:#1d2327;border-radius:2px;min-width:26px;padding:1px 5px;font-size:14px;font-weight:600;display:inline-block}.sim-outline{color:var(--wp-ink);gap:4px;margin:0;padding:0;font-size:14px;list-style:none;display:grid}.sim-outline li{padding:2px 0}.sim-outline-l2{padding-left:14px!important}.sim-outline-l3{padding-left:28px!important}.sim-outline .is-bad{color:var(--wp-red)}.sim-warn{font-size:14px}.sim-form{gap:12px;display:grid}.sim-row>label,.sim-row>.wpx-label{color:var(--wp-ink);font-weight:600}.sim-check{color:var(--wp-ink);flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;display:flex}.sim-check input[type=checkbox],.sim-check input[type=radio]{width:18px;height:18px;accent-color:var(--wp-blue)}.sim-check select{flex:200px;width:auto}.sim-facts{color:#1d2327;background:#fff;border-left:4px solid #dba617;border-radius:0 8px 8px 0;max-width:72ch;padding:12px 16px}.sim-facts-t{margin:0 0 6px;font-size:15px;font-weight:700}.sim-facts ul{margin:0;padding-left:18px;font-size:15px;line-height:1.5}.sim-steps{color:var(--lx-2);gap:4px;margin:0;padding:0;font-size:16px;list-style:none;display:grid}.sim-steps .is-done{color:var(--lx-ok);font-weight:600}.sim-pad{background:#fff;min-height:260px;padding:14px 16px}.sim-list-head{justify-content:space-between;align-items:baseline;gap:8px;display:flex}.sim-h,.wpx .sim-h{color:var(--wp-ink);margin:6px 0 10px;font-size:20px;font-weight:400}.sim-h:focus{outline:none}.sim-count{color:var(--wp-2);font-size:14px}.sim-table-wrap{overflow-x:auto}.sim-table{border-collapse:collapse;width:100%;color:var(--wp-ink);border:1px solid var(--wp-line);font-size:14px}.sim-table th{text-align:left;border-bottom:1px solid var(--wp-line);color:var(--wp-ink);padding:8px 10px;font-weight:400}.sim-table td{vertical-align:top;border-top:1px solid #f0f0f1;padding:8px 10px}.sim-table tbody tr:nth-child(odd){background:#f6f7f7}.sim-num{text-align:right;font-variant-numeric:tabular-nums}.sim-row-actions{color:var(--wp-2);margin-top:2px;font-size:14px}.sim-link{min-height:32px;color:var(--wp-blue);font:inherit;cursor:pointer;background:0 0;border:0;padding:0 2px;font-size:14px;text-decoration:underline}.sim-link.is-delete{color:var(--wp-red)}.sim-btn{border:1px solid var(--wp-blue);min-height:36px;color:var(--wp-blue);font:inherit;cursor:pointer;background:#f6f7f7;border-radius:3px;padding:0 12px;font-size:14px}.sim-val{color:var(--wp-ink);margin:0;padding-top:6px;font-size:14px}.sim-actions{margin-top:16px}.sim-fieldset{border:0;gap:10px;margin:12px 0 0;padding:0;display:grid}.sim-fieldset legend{color:var(--wp-ink);margin-bottom:8px;font-size:14px;font-weight:600}@media (width<=760px){.sim-cols{grid-template-columns:1fr}.sim-side{border-left:0;border-top:1px solid var(--wp-line)}.sim-move{width:40px;height:40px}}:root[data-theme=dark] .lesson-exercise .sim-facts{color:#1d2327;background:#fff}