:root{--paper: #E7E5E2;--paper-deep: #DAD7D3;--card: #F7F6F4;--card-warm: #FBFAF8;--ink: #202020;--ink-soft: #5C5A57;--ink-faint: #8B8884;--accent: #FA8072;--accent-deep: #E2685A;--accent-wash: #FBD9D3;--line: rgba(32, 32, 32, .14);--display: "Bricolage Grotesque", "Archivo", system-ui, sans-serif;--body: "Inter", system-ui, -apple-system, sans-serif;--mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;--r-sm: 8px;--r-md: 14px;--r-lg: 20px;--border: 2px solid var(--ink);--shadow: 4px 4px 0 var(--ink);--shadow-sm: 3px 3px 0 var(--ink);--shadow-lift: 6px 6px 0 var(--ink);--topbar-h: 60px;--maxw: 1560px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:var(--body);color:var(--ink);background-color:var(--paper);background-image:linear-gradient(rgba(32,32,32,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(32,32,32,.045) 1px,transparent 1px);background-size:26px 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104px}.sidebar{position:fixed;top:auto;bottom:0;left:0;right:0;width:100%;height:auto;flex-direction:row;justify-content:space-around;border-right:0;border-top:var(--border);padding:7px max(8px,env(safe-area-inset-right)) calc(7px + env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left));z-index:70}.sidebar__mark,.sidebar__foot{display:none}.sidebar__nav{width:100%;flex-direction:row;justify-content:space-around;gap:5px}.sidebar__nav-item{width:auto;min-width:69px;flex-direction:column;justify-content:center;gap:3px;font-size:10.5px;padding:7px 8px}.help{bottom:84px}.toast{bottom:86px}.home{gap:27px}.home__continue,.section-head{align-items:flex-start;flex-direction:column}.lesson-head__title-row{align-items:flex-start;flex-direction:column;gap:7px}.lesson-head__title-row h1{white-space:normal}.course-meter{margin-left:0}}@media (max-width: 720px){:root{--shadow: 3px 3px 0 var(--ink);--shadow-sm: 2px 2px 0 var(--ink)}.shell{padding:0}.topbar__row{padding:9px 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12px;background:var(--card-warm);border:var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-lift);animation:hopin .16s cubic-bezier(.2,.8,.3,1)}@keyframes hopin{0%{opacity:0;transform:translateY(6px)}}.hop__pop:after,.hop__pop:before{content:"";position:absolute;top:100%;right:34px;width:0;height:0;border-left:9px solid transparent;border-right:9px solid transparent}.hop__pop:before{border-top:11px solid var(--ink)}.hop__pop:after{border-top:8px solid var(--card-warm);margin-top:-2.5px}.hop__dots{display:flex;align-items:center;gap:9px}.hop__dot{width:36px;height:36px;display:grid;place-items:center;flex:none;border:var(--border);border-radius:50%;background:var(--card);box-shadow:var(--shadow-sm);cursor:pointer;transform:rotate(var(--tilt, 0deg));transition:transform .13s ease,background .13s ease}.hop__dot:hover{transform:rotate(var(--tilt, 0deg)) translateY(-3px) scale(1.09);background:var(--accent-wash)}.hop__dot.is-done{background:var(--ink);color:var(--card-warm)}.hop__dot.is-current{width:46px;height:46px;background:var(--accent);color:var(--ink);box-shadow:var(--shadow)}.hop__num{font-family:var(--mono);font-size:12px;font-weight:700;line-height:1}.hop__dot.is-current .hop__num{font-size:14px}.hop__arrow{width:28px;height:28px;display:grid;place-items:center;flex:none;border:var(--border);border-radius:9px;background:var(--card);cursor:pointer;transition:background .13s ease}.hop__arrow:hover:not(:disabled){background:var(--accent)}.hop__arrow:disabled{opacity:.3;cursor:not-allowed}.hop__caption{grid-column:1 / -1;margin:2px 0 0;max-width:290px;font-size:12px;line-height:1.35;color:var(--ink-soft);text-align:center}@media (max-width: 720px){.hop__pop{right:auto;left:50%;transform:translate(-50%)}.hop__pop:before,.hop__pop:after{right:auto;left:50%;margin-left:-9px}.hop__pop:after{margin-left:-8px}.hop__dot{width:32px;height:32px}.hop__dot.is-current{width:40px;height:40px}}[data-tema=oscuro]{--paper: #1C1C1E;--paper-deep: #151517;--card: #252528;--card-warm: #2C2C30;--ink: #EDEBE8;--ink-soft: #B0ADA8;--ink-faint: #7E7B77;--accent: #E8756A;--accent-deep: #D2604F;--accent-wash: #4A2E2B;--line: rgba(237, 235, 232, .16);--shadow: 4px 4px 0 #0E0E10;--shadow-sm: 3px 3px 0 #0E0E10;--shadow-lift: 6px 6px 0 #0E0E10}[data-tema=oscuro] body{background-image:linear-gradient(rgba(237,235,232,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(237,235,232,.035) 1px,transparent 1px)}[data-tema=oscuro] .chip:not(.chip--card):not(.chip--ghost),[data-tema=oscuro] .btn--accent,[data-tema=oscuro] .tab.is-active,[data-tema=oscuro] .mod__num,[data-tema=oscuro] .sidebar__nav-item.is-active,[data-tema=oscuro] 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12px;border:var(--border);border-radius:var(--r-sm);background:var(--card);font-family:var(--body);font-weight:600;font-size:13.5px;cursor:pointer;transition:background .13s ease}.sidebar__theme:hover{background:var(--accent-wash)}.sidebar__theme-icon{display:grid;place-items:center;flex:none}.sidebar__theme-track{margin-left:auto;width:34px;height:19px;flex:none;border:2px solid var(--ink);border-radius:999px;background:var(--paper-deep);position:relative;transition:background .18s ease}.sidebar__theme-track.is-on{background:var(--accent)}.sidebar__theme-knob{position:absolute;top:1.5px;left:1.5px;width:12px;height:12px;border-radius:50%;background:var(--ink);transition:transform .18s cubic-bezier(.2,.8,.3,1)}.sidebar__theme-track.is-on .sidebar__theme-knob{transform:translate(15px)}.notes__head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:10px}.notes__switch{display:flex;gap:6px}.notes__switch .tab{padding:6px 13px;font-size:11px}.notes__bar{display:flex;gap:6px;flex-wrap:wrap;padding:8px;border:var(--border);border-bottom:0;border-radius:var(--r-sm) var(--r-sm) 0 0;background:var(--card)}.notes__tool{min-width:32px;height:30px;padding:0 8px;display:grid;place-items:center;border:2px solid var(--ink);border-radius:7px;background:var(--card-warm);font-family:var(--mono);font-size:12px;font-weight:700;cursor:pointer;transition:background .13s ease,transform .1s ease}.notes__tool:hover:not(:disabled){background:var(--accent);transform:translateY(-1px)}.notes__tool:disabled{opacity:.4;cursor:not-allowed}[data-tema=oscuro] .notes__tool:hover:not(:disabled){color:#1c1c1e}.notes__area{width:100%;min-height:290px;padding:15px;border:var(--border);border-radius:0 0 var(--r-sm) var(--r-sm);background:var(--card-warm);color:var(--ink);font-family:var(--mono);font-size:13.5px;line-height:1.68;resize:vertical}.notes__area::placeholder{color:var(--ink-faint)}.notes__area:disabled{opacity:.55}.notes__preview{min-height:290px;padding:18px;border:var(--border);border-radius:var(--r-sm);background:var(--card-warm)}.notes__status{display:flex;align-items:center;gap:8px;margin-top:10px;font-family:var(--mono);font-size:11px;color:var(--ink-faint)}.notes__dot{width:15px;height:15px;display:grid;place-items:center;border:2px solid var(--line);border-radius:50%;flex:none}.notes__dot.is-ok{background:var(--accent);border-color:var(--ink);color:var(--ink)}[data-tema=oscuro] .notes__dot.is-ok{color:#1c1c1e}.notes__guia-btn{margin-top:14px;padding:0;border:0;background:none;font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:4px;cursor:pointer}.notes__guia-btn:hover{color:var(--ink)}.notes__guia{margin-top:12px;padding:14px;border:2px dashed var(--line);border-radius:var(--r-sm)}.notes__guia-fila{display:grid;grid-template-columns:minmax(110px,auto) 1fr;gap:12px;align-items:baseline;padding:5px 0;font-size:13px;color:var(--ink-soft)}.notes__guia-fila code{font-family:var(--mono);font-size:11.5px;padding:3px 7px;border:1px solid var(--line);border-radius:5px;background:var(--card);color:var(--ink);white-space:nowrap}.md{font-size:14.5px;line-height:1.65;color:var(--ink-soft)}.md h1,.md h2,.md h3,.md h4{color:var(--ink);margin:20px 0 9px}.md>:first-child{margin-top:0}.md h1{font-size:25px}.md h2{font-size:21px}.md h3{font-size:18px}.md h4{font-size:15.5px}.md p{margin:0 0 11px}.md strong{color:var(--ink);font-weight:700}.md u{text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:2px}.md s{opacity:.6}.md a{color:var(--ink);text-decoration-color:var(--accent);text-decoration-thickness:2px}.md ul,.md ol{margin:0 0 12px;padding-left:22px}.md li{margin-bottom:5px}.md code{font-family:var(--mono);font-size:.88em;padding:2px 6px;border-radius:5px;background:var(--accent-wash);color:var(--ink)}.md pre{margin:0 0 13px;padding:13px;overflow-x:auto;border:var(--border);border-radius:var(--r-sm);background:var(--card)}.md pre code{background:none;padding:0;font-size:12.5px;line-height:1.55}.md blockquote{margin:0 0 13px;padding:3px 0 3px 15px;border-left:4px solid var(--accent)}.md blockquote p:last-child{margin-bottom:0}.md hr{height:0;border:0;border-top:2px solid var(--line);margin:18px 0}.md ul.md-tasks{list-style:none;padding-left:0}.md ul.md-tasks li{display:flex;align-items:flex-start;gap:9px}.md ul.md-tasks li.is-done{opacity:.55;text-decoration:line-through}.md .md-box{width:17px;height:17px;margin-top:2px;flex:none;display:grid;place-items:center;border:2px solid var(--ink);border-radius:5px;font-size:11px;line-height:1}.md li.is-done .md-box{background:var(--accent);color:var(--ink)}[data-tema=oscuro] .md li.is-done .md-box{color:#1c1c1e}@media (max-width: 720px){.notes__guia-fila{grid-template-columns:1fr;gap:3px}.notes__area{min-height:230px}}.player__error{background:#1a1a1c;color:#f2f0ed}[data-tema=oscuro] .player__error{background:#131315}[data-tema=oscuro] .player__error code{color:var(--accent)}