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1fr}}@media(max-width:600px){.footer-grid[data-astro-cid-sz7xmlte]{grid-template-columns:1fr;gap:var(--space-lg)}}.footer-brand-col[data-astro-cid-sz7xmlte]{display:flex;flex-direction:column;gap:var(--space-md)}.footer-logo[data-astro-cid-sz7xmlte]{display:flex;align-items:center;text-decoration:none;font-weight:600;font-size:1.125rem;color:var(--primary-ink);letter-spacing:-.03em}.logo-symbol[data-astro-cid-sz7xmlte]{background-color:var(--primary-ink);color:var(--on-primary);padding:1px 5px;border-radius:var(--radius-xs);font-family:JetBrains Mono,monospace;font-size:.8rem;margin-right:var(--space-xs)}.logo-text[data-astro-cid-sz7xmlte] .dot[data-astro-cid-sz7xmlte]{color:var(--link-blue)}.footer-desc[data-astro-cid-sz7xmlte]{color:var(--text-mute);max-width:320px}.footer-label[data-astro-cid-sz7xmlte]{display:block;margin-bottom:var(--space-md);color:var(--primary-ink);font-weight:500}.footer-links[data-astro-cid-sz7xmlte]{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--space-sm)}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:var(--text-body);text-decoration:none;font-size:.875rem;transition:color .15s ease}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--primary-ink)}.footer-bottom[data-astro-cid-sz7xmlte]{display:flex;justify-content:space-between;align-items:center;padding-top:var(--space-lg);flex-wrap:wrap;gap:var(--space-sm)}.footer-copy[data-astro-cid-sz7xmlte]{color:var(--text-mute)}.footer-legal[data-astro-cid-sz7xmlte]{display:flex;gap:var(--space-md)}.footer-legal-link[data-astro-cid-sz7xmlte]{color:var(--text-mute);text-decoration:none}.footer-legal-link[data-astro-cid-sz7xmlte]:hover{color:var(--text-body)}:root{--primary-ink: #171717;--on-primary: #ffffff;--text-ink: #171717;--text-body: #4d4d4d;--text-mute: #888888;--hairline: #ebebeb;--hairline-strong: #a1a1a1;--canvas: #ffffff;--canvas-soft: #fafafa;--canvas-soft-2: #f5f5f5;--link-blue: #0070f3;--link-deep: #0761d1;--link-bg-soft: #d3e5ff;--success: #0070f3;--error: #ee0000;--error-soft: #f7d4d6;--error-deep: #c50000;--warning: #f5a623;--warning-soft: #ffefcf;--warning-deep: #ab570a;--violet: #7928ca;--violet-soft: #d8ccf1;--cyan: #50e3c2;--cyan-soft: #aaffec;--highlight-pink: #ff0080;--gradient-develop-start: #007cf0;--gradient-develop-end: #00dfd8;--gradient-preview-start: #7928ca;--gradient-preview-end: #ff0080;--gradient-ship-start: #ff4d4d;--gradient-ship-end: #f9cb28;--radius-none: 0px;--radius-xs: 4px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-pill-sm: 64px;--radius-pill: 100px;--radius-full: 9999px;--space-xxs: 4px;--space-xs: 8px;--space-sm: 12px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 40px;--space-3xl: 48px;--space-4xl: 64px;--space-5xl: 96px;--space-6xl: 128px;--space-section: 192px;--shadow-l1: 0 0 0 1px rgba(0, 0, 0, .08);--shadow-l2: 0px 1px 1px rgba(0, 0, 0, .02), 0px 2px 2px rgba(0, 0, 0, .04), 0 0 0 1px rgba(0, 0, 0, .08);--shadow-l3: 0px 2px 2px rgba(0, 0, 0, .04), 0px 8px 8px -8px rgba(0, 0, 0, .04), 0 0 0 1px rgba(0, 0, 0, .08);--shadow-l4: 0px 2px 2px rgba(0, 0, 0, .04), 0px 8px 16px -4px rgba(0, 0, 0, .04), 0 0 0 1px rgba(0, 0, 0, .08);--shadow-l5: 0px 1px 1px rgba(0, 0, 0, .02), 0px 8px 16px -4px rgba(0, 0, 0, .04), 0px 24px 32px -8px rgba(0, 0, 0, .06), 0 0 0 1px rgba(0, 0, 0, .08)}:root[data-theme=dark]{--primary-ink: #ffffff;--on-primary: #171717;--text-ink: #ffffff;--text-body: #a1a1a1;--text-mute: #666666;--hairline: #2d2d2d;--hairline-strong: #444444;--canvas: #0a0a0a;--canvas-soft: #121212;--canvas-soft-2: #1e1e1e;--link-bg-soft: #102a45;--warning-soft: #382405;--error-soft: #380a0c;--violet-soft: #2e1052;--cyan-soft: #083d31;--shadow-l1: 0 0 0 1px rgba(255, 255, 255, .15);--shadow-l2: 0px 1px 1px rgba(0, 0, 0, .2), 0px 2px 2px rgba(0, 0, 0, .4), 0 0 0 1px rgba(255, 255, 255, .15);--shadow-l3: 0px 2px 2px rgba(0, 0, 0, .4), 0px 8px 8px -8px rgba(0, 0, 0, .4), 0 0 0 1px rgba(255, 255, 255, .15);--shadow-l4: 0px 2px 2px rgba(0, 0, 0, .4), 0px 8px 16px -4px rgba(0, 0, 0, .4), 0 0 0 1px rgba(255, 255, 255, .15);--shadow-l5: 0px 1px 1px rgba(0, 0, 0, .2), 0px 8px 16px -4px rgba(0, 0, 0, .4), 0px 24px 32px -8px rgba(0, 0, 0, .6), 0 0 0 1px rgba(255, 255, 255, .15)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:Inter,system-ui,-apple-system,sans-serif;color:var(--text-ink);background-color:var(--canvas-soft);scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .25s ease,color .25s ease}body{min-height:100vh;display:flex;flex-direction:column;background-color:var(--canvas-soft);color:var(--text-ink);transition:background-color .25s ease,color .25s 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#0000001a}.btn-secondary{background-color:var(--canvas);color:var(--primary-ink);border:1px solid var(--hairline);border-radius:var(--radius-pill);font-size:1rem;padding:var(--space-sm) var(--space-xl);height:48px}.btn-secondary:hover{background-color:var(--canvas-soft);border-color:var(--hairline-strong)}.btn-sm{height:32px;font-size:.875rem;padding:0 var(--space-md);border-radius:var(--radius-pill)}.card-marketing{background-color:var(--canvas);border-radius:var(--radius-md);border:1px solid var(--hairline);padding:var(--space-lg);box-shadow:var(--shadow-l3);transition:transform .2s ease,box-shadow .2s ease}.card-marketing:hover{transform:translateY(-2px);box-shadow:var(--shadow-l4)}.container{max-width:1200px;margin:0 auto;padding:0 var(--space-lg);width:100%}@media(max-width:600px){.container{padding:0 var(--space-md)}}@media(max-width:600px){:root{--space-xl: 16px;--space-2xl: 24px;--space-3xl: 32px;--space-4xl: 36px;--space-5xl: 44px;--space-6xl: 48px;--radius-md: 6px;--radius-lg: 8px}h1,h2,h3,h4,h5,h6{letter-spacing:-.03em}.display-xl{font-size:1.625rem!important;line-height:1.15}.display-lg{font-size:1.375rem!important;line-height:1.2}.display-md{font-size:1.1875rem!important;line-height:1.25}.display-sm{font-size:1.0625rem!important;line-height:1.3}body,p,ul,ol,li{font-size:.875rem!important;line-height:1.45}.lead{font-size:1rem!important;line-height:1.45}.small-text{font-size:.8125rem!important;line-height:1.4}.mono-label{font-size:.6875rem!important}.code-text{font-size:.75rem!important;padding:1px 4px}.page-content{padding-top:var(--space-xl)!important;padding-bottom:var(--space-3xl)!important}.container{padding:0 12px!important}.card-marketing,.card-marketing-large,.card-soft,.panels-container,.definition-card,.faq-card,.part-card,.syllabus-card,.explainer-card,.lookup-card{padding:12px!important}.theory-section,.widget-section{margin-top:var(--space-2xl)!important;gap:var(--space-lg)!important}.nav-header{height:56px!important}.nav-menu{top:56px!important;padding:var(--space-md)!important}.btn{height:40px!important;font-size:.9375rem!important;padding:var(--space-xs) var(--space-lg)!important}.btn-sm{height:30px!important;font-size:.8125rem!important;padding:0 var(--space-md)!important}.math-display{font-size:1.25rem!important;padding:12px 6px!important}.math-display-sm,.math-expr{font-size:1.2rem!important}.math-center{font-size:1.35rem!important;margin:var(--space-xs) 0!important}.explainer-controls{padding:var(--space-sm)!important;gap:var(--space-sm)!important}.step-badge{padding:var(--space-sm)!important;gap:var(--space-xs)!important}.log-table th,.log-table td{padding:4px 6px!important;font-size:.65rem!important}.pattern-table th,.pattern-table td{padding:8px 10px!important}}