@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/inter-400.woff2) format("woff2")}@font-face{font-family:Inter;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/inter-500.woff2) format("woff2")}@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/inter-600.woff2) format("woff2")}@font-face{font-family:Inter;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/inter-700.woff2) format("woff2")}:root{--color-primary: #1a7a4c;--color-primary-light: #2d9d63;--color-primary-dark: #0f5c37;--color-primary-bg: #f0faf5;--color-bg: #ffffff;--color-bg-secondary: #f7f8fa;--color-text: #1a1a2e;--color-text-secondary: #6b7280;--color-text-light: #9ca3af;--color-border: #e5e7eb;--color-success: #10b981;--color-error: #ef4444;--color-warning: #f59e0b;--color-gold: #d4a843;--color-dark: #1a1a2e;--color-warning-bg: #fef3c7;--color-warning-text: #92400e;--color-error-bg: #fef2f2;--color-success-bg: #f0fdf4;--color-card-black: #1a1a2e;--color-bg-overlay: rgba(255, 255, 255, .6);--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--radius-sm: 6px;--radius-md: 12px;--radius-lg: 16px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-12: 48px;--space-16: 64px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1)}html.dark{--color-bg: #0f1117;--color-bg-secondary: #1a1d27;--color-text: #e5e7eb;--color-text-secondary: #9ca3af;--color-text-light: #6b7280;--color-border: #2d3748;--color-dark: #0f1117;--color-primary-bg: #162b20;--color-warning-bg: #332b0a;--color-warning-text: #fbbf24;--color-error-bg: #2d1212;--color-success-bg: #162b1a;--color-card-black: #e5e7eb;--color-bg-overlay: rgba(0, 0, 0, .4);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .2);--shadow-md: 0 4px 6px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .4)}@media(max-width:767px){h1{font-size:1.75rem}h2{font-size:1.5rem}h3{font-size:1.25rem}.page{padding:var(--space-4) var(--space-4)}.hide-mobile{display:none!important}}@media(min-width:768px)and (max-width:1199px){.hide-tablet{display:none!important}}@media(min-width:1200px){.hide-desktop{display:none!important}}@media(min-width:768px){.show-mobile-only{display:none!important}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);font-weight:400;line-height:1.6;color:var(--color-text);background-color:var(--color-bg);min-height:100vh}#root{min-height:100vh;display:flex;flex-direction:column}.skip-to-content{position:absolute;top:-100%;left:16px;padding:8px 16px;background:var(--color-primary);color:#fff;border-radius:var(--radius-sm);z-index:10000;font-size:.875rem;text-decoration:none;transition:top .2s}.skip-to-content:focus{top:8px}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--color-text)}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}p{margin-bottom:1rem}a{color:var(--color-primary);text-decoration:none;transition:color .15s}a:hover{color:var(--color-primary-light)}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}ul,ol{padding-left:1.5rem}li{margin-bottom:.25rem}input,select,textarea,button{font-family:var(--font-family);font-size:1rem;color:var(--color-text)}.sr-only,.aria-live-region{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.text-center{text-align:center}.text-secondary{color:var(--color-text-secondary)}.text-small{font-size:.875rem}.page{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:var(--space-8) var(--space-4)}.page-wide{flex:1;width:100%;padding:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.fade-in{animation:fadeIn .2s ease-in}@keyframes modalFadeIn{0%{opacity:0}to{opacity:1}}.modal-fade-in{animation:modalFadeIn .15s ease-in}.lesson-content h2{font-size:1.375rem;margin-top:var(--space-6);margin-bottom:var(--space-3)}.lesson-content h3{font-size:1.125rem;margin-top:var(--space-4);margin-bottom:var(--space-2)}.lesson-content p,.lesson-content ul,.lesson-content ol{margin-bottom:var(--space-3);color:var(--color-text-secondary)}.lesson-content .key-takeaway{border:1px solid var(--color-primary);border-left:4px solid var(--color-primary);background-color:var(--color-primary-bg);border-radius:var(--radius-md);padding:var(--space-3) var(--space-4);margin:var(--space-4) 0;color:var(--color-text)}.lesson-content table{width:100%;border-collapse:collapse;margin:var(--space-4) 0;font-size:.8125rem;overflow-x:auto;display:block}.lesson-content th,.lesson-content td{border:1px solid var(--color-border);padding:4px 8px;text-align:center}.lesson-content th{background-color:var(--color-bg-secondary);font-weight:600;font-size:.75rem}.lesson-content code{background-color:var(--color-bg-secondary);padding:2px 6px;border-radius:4px;font-size:.875rem}.lesson-content strong{color:var(--color-text)}html.dark .lesson-content .disclaimer,html.dark .lesson-content div[style*="background:#1e293b"],html.dark .lesson-content div[style*="background: #1e293b"]{background-color:var(--color-bg-secondary)!important;border-color:var(--color-border)!important}html.dark .lesson-content tr[style*="background:#1e293b"],html.dark .lesson-content tr[style*="background: #1e293b"]{background-color:var(--color-bg-secondary)!important}html.dark .lesson-content td[style*="background:#"],html.dark .lesson-content th[style*="background:#"]{border-color:var(--color-border)!important}.btn:not(.btn-disabled){transition:background-color .15s,border-color .15s,color .15s,opacity .15s,box-shadow .15s,transform .15s}.btn:not(.btn-disabled):hover{box-shadow:0 0 12px #1a7a4c4d;transform:scale(1.02)}.btn-ghost:not(.btn-disabled):hover,.btn-ghost-danger:not(.btn-disabled):hover{box-shadow:none;transform:none;opacity:.7}.btn:not(.btn-disabled):active{transform:scale(.98)}.btn-ghost:not(.btn-disabled):active,.btn-ghost-danger:not(.btn-disabled):active{transform:none;opacity:.5}