:root{--color-primary:#6366f1;--color-primary-hover:#4f46e5;--color-accent:#e01e49;--color-accent-hover:#be123c;--color-bg:#111827;--color-bg-elevated:#1f2937;--color-text:#fff;--color-text-muted:#9ca3af;--color-text-dim:#6b7280;--color-border:#ffffff1a;--spacing-xs:.25rem;--spacing-sm:.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--radius-sm:.25rem;--radius-md:.375rem;--radius-lg:.5rem}html{scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}[id^=com-id-],#main-content{scroll-margin-top:7rem}astro-island,astro-slot,astro-static-slot{display:contents}[data-hide] .pb-32{padding-bottom:0}[data-hide] .-mt-32{margin-top:0}[data-hide] .mx-auto.max-w-7xl.px-4.pb-12{margin:0 auto;padding:0}.leading-0{line-height:0}.lesson-box{max-height:460px;overflow:auto}@media (width<=1300px){.max-w-7xl{padding-top:15px;padding-bottom:15px}}.main-height{min-height:calc(100vh - 132px)}.d-hover{transition:transform .3s}.d-hover:hover,.d-hover:focus{transform:scale(1.05)}.text-balance{text-wrap:balance}.article-content{color:#d1d5db;max-width:72ch;line-height:1.65}.article-content p{margin-top:0;margin-bottom:.75em}.article-content p:last-child{margin-bottom:0}.article-content h2,.article-content h3,.article-content h4{color:#fff;margin-top:1.25em;margin-bottom:.5em;font-weight:600}.article-content h2:first-child,.article-content h3:first-child,.article-content h4:first-child{margin-top:0}.article-content ul{margin-top:.5em;margin-bottom:.75em;padding-left:1.5em;list-style-type:disc}.article-content ol{margin-top:.5em;margin-bottom:.75em;padding-left:1.5em;list-style-type:decimal}.article-content li{margin-top:0;margin-bottom:.125em}.article-content li::marker{color:#9ca3af}.article-content li:last-child{margin-bottom:0}.article-content blockquote{color:#cbd5e1;background:#6366f10f;border-left:3px solid #6366f1;border-radius:0 .375rem .375rem 0;margin:1em 0;padding:.75em 1em .75em 1.25em;font-style:italic}.article-content blockquote>:first-child{margin-top:0}.article-content blockquote>:last-child{margin-bottom:0}.article-content blockquote cite,.article-content blockquote footer{color:#94a3b8;margin-top:.5em;font-size:.875em;font-style:normal;display:block}.article-content blockquote cite:before,.article-content blockquote footer:before{content:"— "}.article-content table{border-collapse:collapse;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:#ffffff26 transparent;width:100%;max-width:100%;margin:1em 0;font-size:.9375em;line-height:1.5;display:block;overflow-x:auto}.article-content table::-webkit-scrollbar{height:8px}.article-content table::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:4px}.article-content thead{background:#ffffff0d}.article-content th{text-align:left;color:#e5e7eb;white-space:nowrap;border-bottom:1px solid #ffffff26;padding:.6em .9em;font-weight:600}.article-content td{vertical-align:top;border-bottom:1px solid #ffffff0f;padding:.6em .9em}.article-content tbody tr:last-child td{border-bottom:0}.article-content tbody tr:hover{background:#ffffff08}.article-content td code{word-break:break-all}.article-content a{color:#818cf8;text-underline-offset:2px;text-decoration:underline}.article-content a:hover{color:#a5b4fc}.article-content strong{color:#e5e7eb;font-weight:600}.article-content code{color:#fde047;word-break:break-word;background:#ffffff14;border:1px solid #ffffff0f;border-radius:.25rem;padding:.15em .4em;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:.875em}.article-content pre{color:#e2e8f0;scrollbar-width:thin;scrollbar-color:#ffffff26 transparent;background:#0f172a;border:1px solid #ffffff14;border-radius:.5rem;margin:1em 0;padding:.9rem 1.1rem;font-size:.875em;line-height:1.55;overflow-x:auto}.article-content pre::-webkit-scrollbar{height:8px}.article-content pre::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:4px}.article-content pre code{color:inherit;white-space:pre;background:0 0;border:none;border-radius:0;padding:0;font-size:1em;display:block}.article-content.prose p,.article-content.prose-lg p{margin-top:0;margin-bottom:.75em}.article-content.prose li,.article-content.prose-lg li{margin-top:0;margin-bottom:.125em}.article-content.prose li:last-child,.article-content.prose-lg li:last-child{margin-bottom:0}.definition-grid,.course-facts dl{grid-template-columns:auto auto;justify-content:start;align-items:baseline;gap:.375rem 1rem;width:fit-content;max-width:100%;margin:0;font-size:.875rem;line-height:1.5;display:grid}.definition-grid dt,.course-facts dl dt{color:var(--color-text-muted);white-space:nowrap;margin:0;padding-right:.25rem;font-weight:500}.definition-grid dd,.course-facts dl dd{color:var(--color-text);text-align:left;word-break:break-word;margin:0;font-weight:500}.definition-grid dd:empty:before,.course-facts dl dd:empty:before{content:"—";color:var(--color-text-dim);font-weight:400}.course-facts>h2{color:var(--color-text)}:focus-visible{outline-offset:2px;border-radius:2px;outline:2px solid #6366f1}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline-offset:2px;outline:2px solid #6366f1}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:#111827;border-radius:10px;outline:1px inset #111827}::-webkit-scrollbar-thumb{background:#555;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#e01e49}#mobile-menu{display:none}body.menu-open{overflow:hidden}body.menu-open #mobile-menu{display:block}body.menu-open .menu-overlay{animation:.18s ease-out both menu-overlay-in}body.menu-open .menu-drawer{animation:.22s cubic-bezier(.22,1,.36,1) both menu-drawer-in}@keyframes menu-overlay-in{0%{opacity:0}to{opacity:1}}@keyframes menu-drawer-in{0%{transform:translate(-100%)}to{transform:translate(0)}}@media (prefers-reduced-motion:reduce){body.menu-open .menu-overlay,body.menu-open .menu-drawer{animation:none}}.video-container.pip-active:before{color:#ddd;content:"Video is now playing in a Picture-in-Picture window";z-index:22222222;text-align:center;width:100%;height:20px;margin:auto;position:absolute;inset:0}.video-container.pip-active .video-controls-container{display:none}input[name=faq]:checked~div{display:block}input[name=faq]:not(:checked)+label .minus{display:none}input[name=faq]:checked+label .minus{display:block}input[name=faq]:checked+label .plus{display:none}.google-btn{width:364px;margin:0 auto 0;display:block}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.off-screen{width:1px;height:1px;position:absolute;top:auto;left:-10000px;overflow:hidden}.svg-sprite{visibility:hidden;width:0;height:0;position:absolute}.skip-to-content{z-index:9999;color:#fff;background:#6366f1;border-radius:.375rem;padding:.75rem 1.5rem;font-weight:600;text-decoration:none;transition:top .2s;position:absolute;top:-100px;left:50%;transform:translate(-50%)}.skip-to-content:focus{outline-offset:2px;outline:2px solid #fff;top:1rem}video{aspect-ratio:16/9}.demo-banner{animation:.5s ease-out slideInDown}@keyframes slideInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.ytp-button{color:#fff;cursor:pointer;background:0 0;border:none;border-radius:20px;justify-content:center;align-items:center;width:44px;min-width:44px;height:44px;min-height:44px;padding:0;transition:all .1s cubic-bezier(0,0,.2,1);display:flex}.ytp-button:hover,.ytp-button:focus-visible{background-color:#ffffff1a}.ytp-button_long{width:48px}.ytp-button svg{filter:drop-shadow(0 0 1px #000c);width:24px;height:24px;margin:0 auto}.tooltip{display:none}@media (width>=768px){.tooltip{color:#fff;white-space:nowrap;pointer-events:none;z-index:1000;background:#0006;border-radius:28px;justify-content:center;align-items:center;gap:5px;height:32px;padding:0 10px;font-size:12px;display:flex;position:absolute;bottom:calc(100% + 30px);box-shadow:0 2px 8px #0006}.tooltip.volume{bottom:calc(100% + 45px)}.tooltip-center{left:50%;transform:translate(-50%)}.tooltip-left{margin-left:-4px;left:0;transform:none}.tooltip-right{right:0;transform:none}.tooltip-label{font-weight:500}.tooltip-shortcut{letter-spacing:.5px;border:1px solid #ffffff4d;border-radius:3px;padding:0 4px;font-size:11px;font-weight:500}}.push-prompt{z-index:9999;width:calc(100% - 2rem);max-width:520px;animation:.35s ease-out push-prompt-slide-up;position:fixed;bottom:1rem;left:50%;transform:translate(-50%)}.push-prompt-inner{color:#d1d5db;background:#1f2937;border:1px solid #ffffff14;border-radius:.75rem;flex-wrap:wrap;align-items:center;gap:.75rem;padding:1rem 2.5rem 1rem 1rem;font-size:.875rem;line-height:1.4;display:flex;position:relative;box-shadow:0 8px 30px #00000080}.push-prompt-text{flex:100%;margin:0}.push-prompt-actions{gap:.5rem;display:flex}.push-prompt-btn{cursor:pointer;border:none;border-radius:.375rem;padding:.4rem 1rem;font-size:.8125rem;font-weight:600;transition:background .15s}.push-prompt-enable{color:#fff;background:#e11d48}.push-prompt-enable:hover{background:#be123c}.push-prompt-later{color:#9ca3af;background:0 0}.push-prompt-later:hover{color:#fff}.push-prompt-close{color:#6b7280;cursor:pointer;background:0 0;border:none;padding:.25rem;font-size:1.25rem;line-height:1;position:absolute;top:.4rem;right:.5rem}.push-prompt-close:hover{color:#fff}@keyframes push-prompt-slide-up{0%{opacity:0;transform:translate(-50%)translateY(1rem)}to{opacity:1;transform:translate(-50%)translateY(0)}}html,body{height:100%}