:root{--bg-canvas:40 25% 98%;--bg-surface:0 0% 100%;--bg-card:40 20% 96%;--bg-elevated:0 0% 100%;--bg-hover:40 18% 92%;--bg-input:0 0% 100%;--border-subtle:35 15% 88%;--border-strong:35 15% 76%;--border-active:221 83% 53%;--border-glass:0 0% 100%;--text-primary:222 47% 11%;--text-secondary:215 19% 35%;--text-muted:215 16% 50%;--text-on-primary:0 0% 100%;--primary:221 83% 53%;--primary-hover:224 76% 45%;--primary-glow:221 83% 53%;--accent-emerald:158 64% 42%;--accent-emerald-bg:150 60% 96%;--accent-emerald-border:152 57% 75%;--danger-crimson:0 84% 60%;--danger-bg:0 85% 97%;--danger-border:0 72% 80%;--accent-amber:38 92% 50%;--accent-amber-bg:48 100% 96%;--accent-amber-border:45 93% 72%;--radius-xs:4px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--font-sans:"Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-worksheet:"Fredoka", "Comic Neue", cursive, sans-serif;--font-school-cursive:"Patrick Hand", "Caveat", cursive, sans-serif;--font-mono:"JetBrains Mono", "SFMono-Regular", Consolas, Menlo, monospace;--font-dyslexic:"OpenDyslexic", sans-serif;--tracking-tight:-.035em;--tracking-snug:-.02em;--tracking-normal:0em;--tracking-wide:.05em;--tracking-loose:.18em;--text-hero:clamp(2.25rem, 5vw, 3.5rem);--text-h1:clamp(1.85rem, 4vw, 2.75rem);--text-h2:clamp(1.45rem, 3vw, 2.15rem);--text-h3:clamp(1.15rem, 2vw, 1.45rem);--text-body-lg:1.125rem;--text-body:1.0625rem;--text-sm:.9375rem;--text-xs:.8125rem;--shadow-sm:0 1px 2px 0 #7a69520d;--shadow-md:0 4px 12px -2px #5c4f3d14, 0 2px 6px -1px #5c4f3d0a;--shadow-lg:0 12px 30px -4px #4d42331a, 0 4px 12px -2px #4d42330d;--shadow-sheet:0 1px 3px #0000000d, 0 20px 25px -5px #0000000f, 0 8px 10px -6px #00000005;--shadow-inset-top:inset 0 1px 0 0 #ffffffe6;--shadow-inset-well:inset 0 2px 4px 0 #5c4f3d0f;--ease-spring:cubic-bezier(.16, 1, .3, 1);--ease-out:cubic-bezier(0, 0, .2, 1);--duration-fast:.15s;--duration-normal:.25s;--duration-slow:.4s;--touch-target-min:48px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);background-color:hsl(var(--bg-canvas));color:hsl(var(--text-primary));-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;font-size:16px;line-height:1.7}body{flex-direction:column;min-height:100vh;display:flex;overflow-x:hidden}.tabular-nums{font-variant-numeric:tabular-nums}.skip-link{background:hsl(var(--primary));color:hsl(var(--text-on-primary));border-radius:var(--radius-sm);z-index:9999;box-shadow:var(--shadow-lg);transition:top var(--duration-fast) ease;padding:.75rem 1.25rem;font-weight:600;text-decoration:none;position:absolute;top:-9999px;left:1rem}.skip-link:focus{outline:3px solid hsl(var(--border-active));outline-offset:2px;top:1rem}body.dyslexia-active{letter-spacing:.05em;word-spacing:.1em;font-family:var(--font-dyslexic), sans-serif!important}body.dyslexia-active .worksheet-a4{font-family:var(--font-dyslexic), sans-serif!important}body.dark-mode{--bg-canvas:222 47% 9%;--bg-surface:222 47% 13%;--bg-card:222 47% 16%;--bg-hover:222 47% 20%;--bg-input:222 47% 16%;--border-subtle:217 33% 22%;--border-strong:217 33% 32%;--text-primary:210 40% 98%;--text-secondary:215 20% 75%;--text-muted:215 16% 58%}body.dark-mode .worksheet-a4{color:#0f172a!important;background-color:#fff!important;border-color:#cbd5e1!important;box-shadow:0 20px 40px -10px #0009,0 0 0 1px #ffffff1f!important}body.dark-mode .worksheet-a4 *{color:#0f172a}body.dark-mode .worksheet-a4 .ws-meta-label,body.dark-mode .worksheet-a4 .ws-meta-line,body.dark-mode .worksheet-a4 .ws-footer,body.dark-mode .worksheet-a4 .ws-sheet-instruction{color:#334155!important}body.dark-mode .worksheet-a4 .math-box{color:#2563eb!important;background-color:#f8fafc!important;border-color:#cbd5e1!important}body.dark-mode .worksheet-a4 .math-item,body.dark-mode .worksheet-a4 .math-card,body.dark-mode .worksheet-a4 .ortho-card,body.dark-mode .worksheet-a4 .ortho-item{color:#0f172a!important;background-color:#f8fafc!important;border-color:#e2e8f0!important}.worksheet-a4{border-radius:var(--radius-lg);box-shadow:var(--shadow-sheet);min-height:840px;transition:box-shadow var(--duration-normal) ease;background-color:#fff;border:1px solid #e2e8f0;flex-direction:column;justify-content:space-between;padding:2.25rem 2.5rem;display:flex;position:relative}.worksheet-a4:before{content:"";opacity:.6;pointer-events:none;background-image:radial-gradient(circle,#cbd5e1 2.5px,#0000 3px);background-repeat:repeat-y;background-size:8px 180px;width:8px;position:absolute;top:15%;bottom:15%;left:10px}.ws-school-banner{text-align:center;color:#1e3a8a;border-radius:var(--radius-sm);text-transform:uppercase;letter-spacing:.04em;background-color:#eff6ff;border:1px dashed #bfdbfe;margin-bottom:.75rem;padding:.35rem .75rem;font-size:.85rem;font-weight:700}.print-tooltip-hint{color:hsl(var(--text-muted));align-items:center;gap:.4rem;margin-top:.45rem;font-size:.72rem;line-height:1.4;display:flex}.print-tooltip-hint .hint-icon{flex-shrink:0;font-size:.85rem}.group-btn-selector{grid-template-columns:1fr 1fr;gap:.5rem;margin-top:.35rem;display:grid}.group-pill{border-radius:var(--radius-md);border:1px solid hsl(var(--border-strong));background-color:hsl(var(--bg-surface));color:hsl(var(--text-secondary));font-weight:700;font-size:var(--text-xs);cursor:pointer;transition:all var(--duration-fast) var(--ease-spring);justify-content:center;align-items:center;gap:.35rem;padding:.5rem .75rem;display:flex}.group-pill.active{background-color:hsl(var(--primary));color:#fff;border-color:hsl(var(--primary-hover));box-shadow:var(--shadow-sm)}.group-badge{color:#fff;letter-spacing:.05em;background-color:#2563eb;border-radius:4px;padding:.1rem .5rem;font-size:.75rem;font-weight:800;display:inline-block}.btn-tactile{min-height:var(--touch-target-min);border-radius:var(--radius-md);font-weight:600;font-size:var(--text-sm);cursor:pointer;transition:all var(--duration-fast) var(--ease-spring);box-shadow:var(--shadow-inset-top), var(--shadow-sm);border:1px solid #0000;justify-content:center;align-items:center;gap:.5rem;padding:.625rem 1.25rem;text-decoration:none;display:inline-flex}.btn-tactile:active{transform:scale(.98)}.btn-tactile:focus-visible{outline:3px solid hsl(var(--primary));outline-offset:2px}.btn-primary{background-color:hsl(var(--primary));color:hsl(var(--text-on-primary));border-color:hsl(var(--primary-hover))}.btn-primary:hover{background-color:hsl(var(--primary-hover));box-shadow:var(--shadow-md), 0 0 12px hsl(var(--primary) / .25)}.btn-secondary{background-color:hsl(var(--bg-surface));color:hsl(var(--text-primary));border-color:hsl(var(--border-strong))}.btn-secondary:hover{background-color:hsl(var(--bg-hover));border-color:hsl(var(--text-secondary))}@media print{@page{size:A4 portrait;margin:12mm 15mm 15mm}html,body{color:#000!important;background:#fff!important;min-height:auto!important;margin:0!important;padding:0!important;font-size:13pt!important}header,nav,footer,.no-print,.controls-panel,.seo-editorial-section,.hero-badge,.badge-strip,.skip-link,.faq-section,button,.toggle-row{display:none!important}main,.app-container,.worksheet-container{width:100%!important;max-width:100%!important;margin:0!important;padding:0!important;display:block!important}.worksheet-a4{page-break-inside:avoid;box-shadow:none!important;background:#fff!important;border:none!important;width:100%!important;max-width:100%!important;min-height:auto!important;padding:0!important}.worksheet-a4:before{display:none!important}.ws-school-banner{color:#000!important;background:0 0!important;border:1px solid #333!important;margin-bottom:10px!important}.ws-header{border-bottom:2px solid #000!important;justify-content:space-between!important;margin-bottom:16px!important;padding-bottom:8px!important;font-size:11pt!important;display:flex!important}.math-item,.ortho-item{page-break-inside:avoid;color:#000!important;background:#fff!important;border:1px solid #333!important}.math-sign-box{color:#000!important;background:#fff!important;border:2px solid #000!important}.interactive-buttons,.score-badge-panel{display:none!important}.ws-footer{color:#444!important;border-top:1px solid #777!important;justify-content:space-between!important;margin-top:20px!important;padding-top:6px!important;font-size:9pt!important;display:flex!important}}.site-header[data-astro-cid-ju4pidww]{z-index:50;background-color:hsl(var(--bg-surface) / .95);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid hsl(var(--border-subtle));box-shadow:var(--shadow-sm);position:sticky;top:0}.header-container[data-astro-cid-ju4pidww]{justify-content:space-between;align-items:center;gap:1.5rem;max-width:1240px;margin:0 auto;padding:.85rem 1.5rem;display:flex}.brand-link[data-astro-cid-ju4pidww]{align-items:center;gap:.75rem;text-decoration:none;display:flex}.brand-logo-icon[data-astro-cid-ju4pidww]{flex-shrink:0;align-items:center;display:flex}.brand-meta[data-astro-cid-ju4pidww]{flex-direction:column;display:flex}.brand-name[data-astro-cid-ju4pidww]{letter-spacing:var(--tracking-tight);color:hsl(var(--text-primary));font-size:1.25rem;font-weight:800;line-height:1.2}.brand-tld[data-astro-cid-ju4pidww]{color:hsl(var(--primary))}.brand-tagline[data-astro-cid-ju4pidww]{color:hsl(var(--text-muted));letter-spacing:var(--tracking-wide);text-transform:uppercase;font-size:.7rem;font-weight:500}.site-nav[data-astro-cid-ju4pidww]{display:flex}.nav-menu[data-astro-cid-ju4pidww]{align-items:center;gap:.5rem;list-style:none;display:flex}.nav-link[data-astro-cid-ju4pidww]{border-radius:var(--radius-md);font-size:var(--text-sm);color:hsl(var(--text-secondary));transition:all var(--duration-fast) var(--ease-spring);min-height:var(--touch-target-min);align-items:center;padding:.5rem .85rem;font-weight:600;text-decoration:none;display:inline-flex}.nav-link[data-astro-cid-ju4pidww]:hover{background-color:hsl(var(--bg-hover));color:hsl(var(--text-primary))}.nav-link[data-astro-cid-ju4pidww].active{background-color:hsl(var(--primary) / .1);color:hsl(var(--primary))}.header-actions[data-astro-cid-ju4pidww]{align-items:center;gap:.75rem;display:flex}.badge-men[data-astro-cid-ju4pidww]{background-color:hsl(var(--accent-emerald-bg));color:hsl(var(--accent-emerald));border:1px solid hsl(var(--accent-emerald-border));border-radius:var(--radius-full);font-size:var(--text-xs);white-space:nowrap;align-items:center;gap:.35rem;padding:.35rem .75rem;font-weight:700;display:inline-flex}.badge-check[data-astro-cid-ju4pidww]{font-weight:900}.btn-theme-toggle[data-astro-cid-ju4pidww]{background-color:hsl(var(--bg-card));border:1px solid hsl(var(--border-strong));color:hsl(var(--text-secondary));border-radius:var(--radius-md);font-size:var(--text-xs);cursor:pointer;transition:all var(--duration-fast) ease;min-height:var(--touch-target-min);align-items:center;gap:.35rem;padding:.4rem .75rem;font-weight:600;display:inline-flex}.btn-theme-toggle[data-astro-cid-ju4pidww]:hover{background-color:hsl(var(--bg-hover));color:hsl(var(--primary));border-color:hsl(var(--primary))}.theme-icon-light[data-astro-cid-ju4pidww],body.dark-mode .theme-icon-dark[data-astro-cid-ju4pidww]{display:none}body.dark-mode .theme-icon-light[data-astro-cid-ju4pidww]{display:inline}.btn-dyslexia-toggle[data-astro-cid-ju4pidww]{background-color:hsl(var(--bg-card));border:1px solid hsl(var(--border-strong));color:hsl(var(--text-secondary));border-radius:var(--radius-md);font-size:var(--text-xs);cursor:pointer;transition:all var(--duration-fast) ease;min-height:var(--touch-target-min);padding:.4rem .75rem;font-weight:600}.btn-dyslexia-toggle[data-astro-cid-ju4pidww]:hover{background-color:hsl(var(--bg-hover));color:hsl(var(--text-primary))}@media (width<=900px){.site-nav[data-astro-cid-ju4pidww]{display:none}}.content-wrapper[data-astro-cid-ju4pidww]{flex:1;width:100%;max-width:1240px;margin:0 auto;padding:2rem 1.5rem 4rem}.site-footer[data-astro-cid-ju4pidww]{background-color:hsl(var(--bg-surface));border-top:1px solid hsl(var(--border-subtle));margin-top:auto;padding:4rem 0 2rem}.footer-container[data-astro-cid-ju4pidww]{max-width:1240px;margin:0 auto;padding:0 1.5rem}.footer-top-grid[data-astro-cid-ju4pidww]{grid-template-columns:2fr 1fr 1fr 1.2fr;gap:2.5rem;margin-bottom:3rem;display:grid}@media (width<=1024px){.footer-top-grid[data-astro-cid-ju4pidww]{grid-template-columns:1fr 1fr}}@media (width<=640px){.footer-top-grid[data-astro-cid-ju4pidww]{grid-template-columns:1fr}}.footer-about[data-astro-cid-ju4pidww]{flex-direction:column;gap:1rem;display:flex}.footer-desc[data-astro-cid-ju4pidww]{font-size:var(--text-sm);color:hsl(var(--text-secondary));line-height:1.6}.footer-citation[data-astro-cid-ju4pidww]{color:hsl(var(--text-muted));background-color:hsl(var(--bg-card));border-radius:var(--radius-sm);border-left:3px solid hsl(var(--primary));padding:.75rem;font-size:.75rem}.footer-col-title[data-astro-cid-ju4pidww]{font-size:var(--text-sm);text-transform:uppercase;letter-spacing:var(--tracking-wide);color:hsl(var(--text-primary));margin-bottom:1.25rem;font-weight:700}.footer-links[data-astro-cid-ju4pidww]{flex-direction:column;gap:.65rem;list-style:none;display:flex}.footer-links[data-astro-cid-ju4pidww] a[data-astro-cid-ju4pidww]{font-size:var(--text-sm);color:hsl(var(--text-secondary));transition:color var(--duration-fast) ease;text-decoration:none}.footer-links[data-astro-cid-ju4pidww] a[data-astro-cid-ju4pidww]:hover{color:hsl(var(--primary))}.trust-badge-stack[data-astro-cid-ju4pidww]{flex-direction:column;gap:.75rem;display:flex}.trust-badge[data-astro-cid-ju4pidww]{color:hsl(var(--text-secondary));background-color:hsl(var(--bg-card));border-radius:var(--radius-sm);border:1px solid hsl(var(--border-subtle));align-items:flex-start;gap:.5rem;padding:.6rem .85rem;font-size:.75rem;display:flex}.trust-badge[data-astro-cid-ju4pidww] strong[data-astro-cid-ju4pidww]{color:hsl(var(--text-primary));display:block}.trust-icon[data-astro-cid-ju4pidww]{font-size:1.1rem}.footer-bottom-row[data-astro-cid-ju4pidww]{border-top:1px solid hsl(var(--border-subtle));font-size:var(--text-xs);color:hsl(var(--text-muted));flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding-top:2rem;display:flex}.footer-bottom-links[data-astro-cid-ju4pidww]{align-items:center;gap:.75rem;display:flex}.footer-bottom-links[data-astro-cid-ju4pidww] a[data-astro-cid-ju4pidww]{color:hsl(var(--text-muted));text-decoration:none}.footer-bottom-links[data-astro-cid-ju4pidww] a[data-astro-cid-ju4pidww]:hover{color:hsl(var(--primary))}.sep[data-astro-cid-ju4pidww]{color:hsl(var(--border-strong))}