@font-face{font-family:Geologica;src:url(/fonts/Geologica-Light.ttf)format("truetype");font-weight:300;font-style:normal;font-display:swap}@font-face{font-family:Geologica;src:url(/fonts/Geologica-Regular.ttf)format("truetype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:Geologica;src:url(/fonts/Geologica-Medium.ttf)format("truetype");font-weight:500;font-style:normal;font-display:swap}@font-face{font-family:Geologica;src:url(/fonts/Geologica-SemiBold.ttf)format("truetype");font-weight:600;font-style:normal;font-display:swap}@font-face{font-family:Geologica;src:url(/fonts/Geologica-Bold.ttf)format("truetype");font-weight:700;font-style:normal;font-display:swap}@font-face{font-family:Alga;src:url(/fonts/Alga-Light.otf)format("opentype");font-weight:300;font-style:normal;font-display:swap}@font-face{font-family:Alga;src:url(/fonts/Alga-Regular.otf)format("opentype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:Alga;src:url(/fonts/Alga-Medium.otf)format("opentype");font-weight:500;font-style:normal;font-display:swap}:root{--color-beetle:#565751;--color-string:#a9a191;--color-moon-mist:#84857d;--color-mineral-gray:#b1b5aa;--color-wild-ginger:#79494d;--color-cloud-dancer:#f5f1ec;--color-bg:var(--color-cloud-dancer);--color-bg-card:#fff;--color-bg-sidebar:var(--color-beetle);--color-text:var(--color-beetle);--color-text-muted:var(--color-moon-mist);--color-text-light:var(--color-mineral-gray);--color-accent:var(--color-wild-ginger);--color-accent-hover:#5e3337;--color-border:#56575126;--color-border-light:#56575114;--font-sans:"Geologica", "Segoe UI", system-ui, -apple-system, sans-serif;--font-serif:"Alga", Georgia, "Times New Roman", serif;--font-base:var(--font-sans);--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 1px 4px #56575114;--shadow-md:0 4px 16px #5657511f;--shadow-lg:0 8px 32px #56575129}[data-theme=dark]{--color-bg:#1e1f1b;--color-bg-card:#272822;--color-bg-sidebar:#161714;--color-text:var(--color-cloud-dancer);--color-text-muted:var(--color-mineral-gray);--color-text-light:var(--color-moon-mist);--color-accent:var(--color-wild-ginger);--color-accent-hover:#8f5659;--color-border:#f5f1ec1f;--color-border-light:#f5f1ec0f}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;font-size:16px}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6;transition:background .25s,color .25s}.lesson-content{color:var(--color-text);font-size:14px;line-height:1.75;font-family:var(--font-sans);font-weight:400}.lesson-content p{margin-bottom:12px}.lesson-content p:last-child{margin-bottom:0}.lesson-content strong{color:var(--color-text);font-weight:600}.lesson-content ul,.lesson-content ol{margin-bottom:12px;padding-left:20px}.lesson-content li{margin-bottom:6px;line-height:1.6}.lesson-content ol{counter-reset:list-counter;padding-left:0;list-style:none}.lesson-content ol li{counter-increment:list-counter;border-bottom:1px solid var(--color-border-light);align-items:flex-start;gap:12px;padding:8px 0;display:flex}.lesson-content ol li:last-child{border-bottom:none}.lesson-content ol li:before{content:counter(list-counter);background:var(--color-beetle);min-width:28px;height:28px;color:var(--color-cloud-dancer);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;margin-top:1px;font-size:12px;font-weight:700;display:flex}.lesson-content table{border-collapse:collapse;border-radius:8px;width:100%;margin:8px 0;font-size:13px;overflow:hidden}.lesson-content table th{background:var(--color-beetle);color:var(--color-cloud-dancer);text-align:left;letter-spacing:.5px;padding:10px 14px;font-size:12px;font-weight:600}.lesson-content table td{border-bottom:1px solid var(--color-border-light);color:var(--color-text);vertical-align:top;padding:9px 14px;line-height:1.5}.lesson-content table tr:last-child td{border-bottom:none}.lesson-content table tr:nth-child(2n) td{background:#5657510a}.lesson-content table tr:hover td{background:#79494d0d}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--color-mineral-gray);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--color-moon-mist)}:focus-visible,button:focus-visible{outline:2px solid var(--color-wild-ginger);outline-offset:2px}a{color:inherit;text-decoration:none}::selection{color:var(--color-text);background:#79494d33}.text-accent{color:var(--color-accent)}.text-muted{color:var(--color-text-muted)}.text-dark{color:var(--color-text)}.font-sans{font-family:var(--font-sans)}.font-serif{font-family:var(--font-serif)}.font-bold{font-weight:700}.font-semi{font-weight:600}.font-medium{font-weight:500}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-8{gap:8px}.gap-12{gap:12px}.gap-16{gap:16px}.rounded{border-radius:var(--radius-md)}.shadow{box-shadow:var(--shadow-md)}