:root{--font-sans:"Outfit", "Segoe UI", system-ui, -apple-system, sans-serif;--font-mono:"Cascadia Code", "Consolas", ui-monospace, monospace;--radius-sm:8px;--radius-lg:18px;--bg-page:var(--bg-soft);--bg-card:var(--surface);--bg-muted:var(--surface3);--border-strong:color-mix(in srgb, var(--border) 55%, var(--muted-dark) 45%);--text-primary:var(--text);--text-secondary:color-mix(in srgb, var(--text) 55%, var(--muted) 45%);--text-muted:var(--muted-dark);--accent:var(--primary);--accent-dark:color-mix(in srgb, var(--primary) 80%, black 20%);--accent-light:var(--active-line);--accent-glow:color-mix(in srgb, var(--primary) 25%, transparent);--success:var(--green);--error:var(--red);--warning:var(--yellow);--star:var(--yellow);--hand-palm:var(--surface3);--hand-finger:var(--surface2);--hand-stroke:var(--muted-dark);--surface-1:var(--surface);--surface-2:var(--surface2);--surface-3:var(--surface3);--text-inverse:#fff;--accent-soft:color-mix(in srgb, var(--primary) 10%, 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var(--code-border);border-radius:var(--radius-sm);-webkit-user-select:none;user-select:none;box-shadow:var(--shadow-sm);color:var(--text-primary);margin-bottom:1.5rem;padding:1.5rem 1rem;font-family:Courier New,Courier,monospace;font-size:1.5rem;line-height:2.2rem}.pta__char--newline{opacity:.3;font-size:.8em}.pta__viewport{background:var(--bg-card);border:1px solid var(--code-border);border-radius:var(--radius-sm);height:5.6rem;box-shadow:var(--shadow-sm);margin-bottom:.75rem;padding:0 1rem;position:relative;overflow:hidden}.pta__track{flex-direction:column;display:flex}.pta__track--scrolling{animation:.32s cubic-bezier(.4,0,.2,1) forwards pta-scroll-up}@keyframes pta-scroll-up{0%{transform:translateY(0)}to{transform:translateY(-2.8rem)}}.pta__line{flex-wrap:wrap;align-items:center;gap:0;height:2.7rem;font-family:Courier New,Courier,monospace;font-size:1.45rem;font-weight:700;display:flex}.pta__line--dimmed{opacity:.35}.pta__char{transition:color 80ms}.pta__char--pending{color:var(--code-muted)}.pta__char--typed{color:var(--text-secondary)}.pta__char--active{color:var(--text-primary);border-bottom:2.5px solid var(--accent);background:var(--accent-soft)}.pta__char--error{color:var(--error);border-bottom:2.5px solid var(--error);background:var(--error-soft)}.pta__progress-bar{background:var(--progress-track);border-radius:0 0 var(--radius-sm) var(--radius-sm);height:3px;position:absolute;bottom:0;left:0;right:0}.pta__progress-fill{background:var(--accent);border-radius:0 0 var(--radius-sm) var(--radius-sm);height:100%;transition:width .1s linear}.pta__hint{color:var(--text-secondary);background:var(--warning-soft);border-left:3px solid var(--warning);border-radius:var(--radius-sm);align-items:center;gap:.5rem;margin-bottom:1rem;padding:.5rem .75rem;font-size:.875rem;display:flex}.pta__hint-icon{font-size:1rem}.app{flex-direction:column;min-height:100svh;display:flex}.header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;margin-bottom:8px;padding:16px 0;display:flex}.header__brand{text-align:left;color:inherit;background:0 0;border:none;align-items:center;gap:12px;padding:0;display:flex}.header__brand:hover .header__title{color:var(--accent)}.header__logo{font-size:1.75rem}.header__title{color:var(--text-primary);font-size:1.2rem;font-weight:700;transition:color .15s}.header__subtitle{color:var(--text-muted);font-size:.8rem}.header__nav{gap:20px;display:flex}.header__nav-item{color:var(--text-muted);cursor:default;font-size:.9rem}.header__nav-item--active{color:var(--accent);font-weight:600}.lesson-map{padding:8px 0 32px}.lesson-map__stats-bar{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);flex-wrap:wrap;align-items:center;gap:20px;margin-bottom:28px;padding:12px 16px;display:flex}.lesson-map__stat{color:var(--text-secondary);align-items:center;gap:8px;font-size:.85rem;display:flex}.lesson-map__stat-track{background:var(--bg-muted);border-radius:999px;width:100px;height:6px;overflow:hidden}.lesson-map__stat-fill{background:var(--accent);border-radius:999px;height:100%;transition:width .3s}.lesson-map__stat-icon{color:var(--star)}.lesson-map__reset{color:var(--text-muted);background:0 0;border:none;margin-left:auto;font-size:.8rem;text-decoration:underline}.lesson-map__reset:hover{color:var(--error)}.lesson-map__section{border:1px solid var(--border);background:var(--bg-card);box-shadow:var(--shadow-sm);border-radius:16px;margin-bottom:14px;transition:border-color .2s,box-shadow .2s;overflow:hidden}.lesson-map__section.is-open{border-color:var(--border-strong);box-shadow:var(--shadow-md)}.lesson-map__section.is-locked{opacity:.72}.lesson-map__section-header{cursor:pointer;text-align:start;width:100%;color:inherit;font:inherit;background:0 0;border:none;align-items:center;gap:14px;margin:0;padding:16px 20px;transition:background .15s;display:flex}.lesson-map__section-header:hover{background:var(--bg-muted)}.lesson-map__section-chevron{color:var(--text-muted);flex:none;transition:transform .22s cubic-bezier(.4,0,.2,1),color .15s;transform:rotate(-90deg)}.lesson-map__section.is-open .lesson-map__section-chevron{color:var(--accent);transform:rotate(0)}.lesson-map__section-header:is(:lang(ae),:lang(ar),:lang(arc),:lang(bcc),:lang(bqi),:lang(ckb),:lang(dv),:lang(fa),:lang(glk),:lang(he),:lang(ku),:lang(mzn),:lang(nqo),:lang(pnb),:lang(ps),:lang(sd),:lang(ug),:lang(ur),:lang(yi)) .lesson-map__section-chevron{transform:rotate(90deg)}.lesson-map__section.is-open .lesson-map__section-header:is(:lang(ae),:lang(ar),:lang(arc),:lang(bcc),:lang(bqi),:lang(ckb),:lang(dv),:lang(fa),:lang(glk),:lang(he),:lang(ku),:lang(mzn),:lang(nqo),:lang(pnb),:lang(ps),:lang(sd),:lang(ug),:lang(ur),:lang(yi)) .lesson-map__section-chevron{transform:rotate(0)}.lesson-map__section-header h2{letter-spacing:-.01em;color:var(--text-primary);font-size:1.05rem;font-weight:650}.lesson-map__section-header .lesson-map__section-meta{align-items:center;gap:10px;margin-inline-start:auto;display:flex}.lesson-map__section-progress{color:var(--text-muted);background:var(--bg-muted);text-align:center;border-radius:999px;min-width:44px;padding:3px 11px;font-size:.78rem;font-weight:600}.lesson-map__section.is-open .lesson-map__section-progress{color:#fff;background:var(--accent)}@keyframes accordion-reveal{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.lesson-map__grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px;padding:6px 20px 22px;animation:.2s accordion-reveal;display:grid}.lesson-card{background:var(--bg-muted);border-radius:var(--radius-md);min-height:130px;color:var(--text-primary);border:1.5px solid #0000;flex-direction:column;justify-content:center;align-items:center;gap:6px;padding:16px 10px 12px;transition:border-color .15s,background .15s,box-shadow .18s,transform .12s;display:flex;position:relative}.lesson-card:not(:disabled):hover{background:var(--bg-card);border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-3px)}.lesson-card--locked{opacity:.55;cursor:not-allowed;background:var(--bg-muted)}.lesson-card--completed{border-color:var(--success);background:var(--bg-card)}.lesson-card--next{border-color:var(--accent);background:var(--accent-light);box-shadow:0 0 0 3px var(--accent-glow);animation:2s infinite 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var(--accent);position:absolute;top:-5px;left:50%;transform:translate(-50%)}.trainer-view{flex-direction:column;flex:1;display:flex}.trainer-toolbar{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:4px;padding:12px 0;display:flex}.trainer-toolbar__left{align-items:center;gap:12px;display:flex}.trainer-toolbar__title{color:var(--text-secondary);font-size:.95rem;font-weight:600}.toolbar-btn{background:var(--bg-muted);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-secondary);padding:6px 12px;font-size:.85rem;transition:background .12s,border-color .12s}.toolbar-btn:hover{background:var(--accent-light);border-color:var(--accent);color:var(--accent-dark)}.toolbar-btn--icon{justify-content:center;align-items:center;width:36px;height:36px;padding:0;font-size:1rem;display:inline-flex}.toolbar-btn--active{background:var(--accent-light);border-color:var(--accent);color:var(--accent-dark)}.trainer-toolbar__actions{gap:clamp(6px,.8vw,12px);display:flex}.stats-bar{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);flex-wrap:wrap;justify-content:center;align-items:center;gap:20px;margin:12px 0;padding:10px 16px;display:flex}.stats-bar__item{flex-direction:column;align-items:center;min-width:56px;display:flex}.stats-bar__value{font-variant-numeric:tabular-nums;color:var(--text-primary);font-size:1.25rem;font-weight:700}.stats-bar__label{text-transform:uppercase;letter-spacing:.07em;color:var(--text-muted);font-size:.65rem}.stats-bar__progress-wrap{flex:1;min-width:140px;max-width:240px}.stats-bar__progress-label{color:var(--text-muted);text-transform:uppercase;justify-content:space-between;margin-bottom:4px;font-size:.7rem;display:flex}.stats-bar__progress-track{background:var(--bg-muted);border-radius:999px;height:5px;overflow:hidden}.stats-bar__progress-fill{background:var(--accent);border-radius:999px;height:100%;transition:width .2s}.typing-area{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);min-height:120px;box-shadow:var(--shadow-sm);flex-direction:column;justify-content:center;align-items:center;gap:0;width:100%;margin:8px 0;padding:32px 24px 32px 0;display:flex;position:relative}.typing-area__start-btn{background:var(--accent);color:#fff;border-radius:var(--radius-sm);letter-spacing:.06em;border:none;flex-shrink:0;align-self:center;width:72px;margin:0 16px 0 20px;padding:10px 6px;font-size:.65rem;font-weight:700;line-height:1.4;transition:background .15s}.typing-area__start-btn:hover{background:var(--accent-dark)}.typing-area__text{font-family:var(--font-mono);letter-spacing:.06em;color:var(--text-primary);flex:1;padding-right:20px;font-size:clamp(1.1rem,2.5vw,1.5rem);line-height:2}.typing-area__text--waiting{opacity:.7}.typing-area__char{position:relative}.typing-area__char--done{color:var(--text-muted)}.typing-area__char--current{color:var(--text-primary)}.typing-area__char--error{color:var(--error);background:#ea43351f;border-radius:2px}.typing-area__char--pending{color:var(--text-secondary)}.typing-area__cursor{background:var(--accent);pointer-events:none;border-radius:999px;width:2px;height:3px;position:absolute;top:12%;bottom:12%;left:-2px}.trainer-view__keyboard-panel{margin-top:auto;padding-top:16px}.keyboard-hands{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:12px 16px 20px}.keyboard-hands__hint{text-align:center;color:var(--text-muted);margin-bottom:8px;font-size:.85rem}.keyboard-hands__stage{margin-bottom:24px;position:relative}.keyboard-hands__overlay{pointer-events:none;z-index:2;justify-content:center;align-items:flex-end;gap:40px;padding-bottom:8px;display:flex;position:absolute;inset:0}.hand-overlay{opacity:.85;width:38%;max-width:220px}.hand-overlay__finger--active{filter:drop-shadow(0 0 4px var(--accent-glow))}.keyboard{padding:4px 0;overflow-x:auto}.keyboard__inner{flex-direction:column;gap:5px;min-width:640px;margin:0 auto;display:flex}.keyboard__row{justify-content:center;gap:4px;display:flex}.kb-key{background:var(--bg-card);border:1.5px solid var(--border-strong);min-width:0;height:40px;color:var(--text-secondary);-webkit-user-select:none;user-select:none;box-shadow:0 2px 0 var(--border-strong), 0 3px 6px #0000000d;border-radius:8px;justify-content:center;align-items:center;font-size:.7rem;font-weight:600;transition:all .15s cubic-bezier(.4,0,.2,1);display:flex;position:relative}.kb-key:before{content:"";background:color-mix(in srgb, var(--finger-color) 12%, transparent);border-radius:inherit;opacity:0;position:absolute;inset:0}.kb-key--colored:before{opacity:1}.kb-key--special{color:var(--text-muted);background:var(--bg-muted);font-size:.6rem}.kb-key--home{border-bottom:2px solid var(--accent)}.kb-key--active{z-index:3;text-shadow:0 1px 2px #0003;transform:translateY(1px);background:var(--accent)!important;border-color:var(--accent-dark)!important;color:#fff!important;box-shadow:0 0 14px var(--accent-glow), inset 0 1px 0 #ffffff40!important}.kb-key--active:before{opacity:0}.kb-key--pressed{transform:translateY(2px)}.kb-key--wrong{animation:.2s ease-in-out kb-shake;background:var(--error)!important;border-color:var(--error)!important;color:#fff!important;box-shadow:0 0 14px 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