@import "https://fonts.googleapis.com/css2?family=Lato:wght@300;400;700;900&display=swap";:root{--color-primary:#fcc600;--color-primary-hover:#e5b400;--color-primary-light:#fff3b0;--color-accent:#f59e0b;--color-blue:#4fc3f7;--color-blue-light:#e1f5fe;--color-dark:#29293c;--color-bg:#fff9e6;--color-bg-white:#fff;--color-text:#29293c;--color-text-light:#6b7280;--color-border:#e5e7eb;--color-success:#10b981;--color-error:#ef4444;--color-card-shadow:#00000014;--font-family:"Lato", sans-serif;--max-width:1200px;--radius:12px;--radius-sm:8px;--transition:all .2s ease}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-family);background-color:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6}#root{flex-direction:column;min-height:100vh;display:flex}h1,h2,h3,h4{font-family:var(--font-family);color:var(--color-dark);font-weight:900;line-height:1.25}h1{letter-spacing:-.5px;margin-bottom:1rem;font-size:2.5rem}h2{margin-bottom:.75rem;font-size:1.875rem}h3{margin-bottom:.5rem;font-size:1.375rem;font-weight:700}h4{margin-bottom:.5rem;font-size:1.125rem;font-weight:700}p{color:var(--color-text);margin-bottom:1rem}small{color:var(--color-text-light);font-size:.875rem}a{color:var(--color-dark);text-decoration:underline;-webkit-text-decoration-color:var(--color-primary);text-decoration-color:var(--color-primary);text-underline-offset:3px;transition:var(--transition)}a:hover{color:var(--color-primary-hover);-webkit-text-decoration-color:var(--color-primary-hover);text-decoration-color:var(--color-primary-hover)}.btn{font-family:var(--font-family);cursor:pointer;transition:var(--transition);border:2px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-size:1rem;font-weight:700;line-height:1.4;text-decoration:none;display:inline-flex}.btn:focus-visible{outline:3px solid var(--color-blue);outline-offset:2px}.btn--primary{background-color:var(--color-primary);color:var(--color-dark);border-color:var(--color-primary)}.btn--primary:hover{background-color:var(--color-primary-hover);border-color:var(--color-primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px #fcc60059}.btn--primary:active{box-shadow:none;transform:translateY(0)}.btn--secondary{background-color:var(--color-dark);color:var(--color-bg-white);border-color:var(--color-dark)}.btn--secondary:hover{background-color:#3a3a52;border-color:#3a3a52;transform:translateY(-1px);box-shadow:0 4px 12px #29293c40}.btn--secondary:active{box-shadow:none;transform:translateY(0)}.btn--outline{color:var(--color-dark);border-color:var(--color-border);background-color:#0000}.btn--outline:hover{border-color:var(--color-primary);background-color:var(--color-primary-light);transform:translateY(-1px)}.btn--outline:active{transform:translateY(0)}.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}.card{background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:0 2px 8px var(--color-card-shadow);transition:var(--transition);padding:1.5rem}.card:hover{box-shadow:0 4px 16px #0000001f}pre{background-color:var(--color-dark);color:#e5e7eb;border-radius:var(--radius-sm);margin-bottom:1rem;padding:1.25rem;font-size:.875rem;line-height:1.7;overflow-x:auto}code{font-family:Consolas,Monaco,Courier New,monospace;font-size:.875em}:not(pre)>code{background-color:var(--color-primary-light);color:var(--color-dark);border-radius:4px;padding:.15em .4em;font-size:.85em}pre code{color:inherit;font-size:inherit;background:0 0;padding:0}input,textarea,select{font-family:var(--font-family);color:var(--color-text);background-color:var(--color-bg-white);border:2px solid var(--color-border);border-radius:var(--radius-sm);width:100%;transition:var(--transition);padding:.75rem 1rem;font-size:1rem;line-height:1.5}input:focus,textarea:focus,select:focus{border-color:var(--color-primary);outline:none;box-shadow:0 0 0 3px #fcc60033}input::placeholder,textarea::placeholder{color:var(--color-text-light)}textarea{resize:vertical;min-height:120px}select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M6 8.825a.7.7 0 0 1-.5-.206L1.205 4.324a.706.706 0 1 1 .998-.998L6 7.123l3.797-3.797a.706.706 0 1 1 .998.998L6.5 8.619a.7.7 0 0 1-.5.206z'/%3E%3C/svg%3E");background-position:right 1rem center;background-repeat:no-repeat;padding-right:2.5rem}label{color:var(--color-dark);margin-bottom:.375rem;font-size:.9375rem;font-weight:700;display:block}.page{min-height:100vh;padding-top:5rem}.text-center{text-align:center}.mt-1{margin-top:.25rem}.mt-2{margin-top:.5rem}.mt-3{margin-top:1rem}.mt-4{margin-top:2rem}.mb-1{margin-bottom:.25rem}.mb-2{margin-bottom:.5rem}.mb-3{margin-bottom:1rem}.mb-4{margin-bottom:2rem}:focus-visible{outline:3px solid var(--color-blue);outline-offset:2px}.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}@media (width<=1024px){h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}}@media (width<=768px){h1{font-size:1.75rem}h2{font-size:1.375rem}.container{padding:0 1rem}.btn{padding:.625rem 1.25rem;font-size:.9375rem}.card{padding:1.25rem}}@media (width<=480px){h1{font-size:1.5rem}h2{font-size:1.25rem}.container{padding:0 .75rem}pre{padding:1rem;font-size:.8125rem}}.language-toggle{border:1px solid #fff3;border-radius:6px;align-items:center;gap:0;display:flex;overflow:hidden}.language-toggle__btn{color:#fff9;font-size:.8rem;font-weight:700;font-family:var(--font-family);cursor:pointer;transition:var(--transition);background:0 0;border:none;padding:.3rem .6rem}.language-toggle__btn:hover{color:var(--color-bg-white);background:#ffffff1a}.language-toggle__btn--active{background-color:var(--color-primary);color:var(--color-dark)}.language-toggle__btn--active:hover{background-color:var(--color-primary-hover);color:var(--color-dark)}.navbar{background-color:var(--color-dark);z-index:1000;justify-content:space-between;align-items:center;height:64px;padding:0 1.5rem;display:flex;position:fixed;top:0;left:0;right:0;box-shadow:0 2px 8px #00000026}.navbar__brand{color:var(--color-primary);letter-spacing:-.5px;white-space:nowrap;font-size:1.25rem;font-weight:900;text-decoration:none}.navbar__brand:hover{color:var(--color-primary-hover);text-decoration:none}.navbar__center{align-items:center;gap:.25rem;display:flex}.navbar__link{color:#ffffffbf;transition:var(--transition);white-space:nowrap;border-radius:8px;padding:.5rem .75rem;font-size:.9rem;font-weight:700;text-decoration:none}.navbar__link:hover{color:var(--color-bg-white);background-color:#ffffff1a;text-decoration:none}.navbar__link--active{color:var(--color-dark);background-color:var(--color-primary)}.navbar__link--active:hover{background-color:var(--color-primary-hover);color:var(--color-dark)}.navbar__right{align-items:center;gap:.75rem;display:flex}.navbar__hamburger{cursor:pointer;background:0 0;border:none;flex-direction:column;gap:5px;padding:.5rem;display:none}.navbar__hamburger-line{background-color:var(--color-bg-white);width:24px;height:2px;transition:var(--transition);border-radius:2px;display:block}.navbar__hamburger--open .navbar__hamburger-line:first-child{transform:rotate(45deg)translate(5px,5px)}.navbar__hamburger--open .navbar__hamburger-line:nth-child(2){opacity:0}.navbar__hamburger--open .navbar__hamburger-line:nth-child(3){transform:rotate(-45deg)translate(5px,-5px)}@media (width<=768px){.navbar__center{background-color:var(--color-dark);flex-direction:column;gap:.25rem;padding:1rem;display:none;position:absolute;top:64px;left:0;right:0;box-shadow:0 4px 12px #0003}.navbar__center--open{display:flex}.navbar__link{text-align:left;width:100%;padding:.75rem 1rem}.navbar__hamburger{display:flex}}.footer{background-color:var(--color-dark);color:#fff;text-align:center;margin-top:auto;padding:2rem 1.5rem}.footer__text{color:#fff;margin:0 0 .5rem;font-size:.925rem;line-height:1.6}.footer__text a{color:var(--color-primary);font-weight:700;text-decoration:none}.footer__text a:hover{text-decoration:underline}.footer__heart{color:var(--color-error)}.footer__credits{color:#ffffffb3;margin:0;font-size:.8rem}.footer__credits a{color:var(--color-primary);text-decoration:none}.footer__credits a:hover{text-decoration:underline}.hero{background:linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);text-align:center;padding:5rem 1.5rem 4rem;position:relative;overflow:hidden}.hero:before{content:"";pointer-events:none;background:radial-gradient(circle,#ffffff26 0%,#0000 60%);width:200%;height:200%;position:absolute;top:-50%;left:-50%}.hero__icon{margin-bottom:1rem;font-size:4rem;display:block}.hero__title{color:var(--color-dark);margin-bottom:.75rem;font-size:3rem;font-weight:900;position:relative}.hero__subtitle{color:var(--color-dark);opacity:.85;max-width:600px;margin-bottom:1rem;margin-left:auto;margin-right:auto;font-size:1.25rem;position:relative}.hero__powered{color:var(--color-dark);opacity:.7;max-width:550px;margin-bottom:2.5rem;margin-left:auto;margin-right:auto;font-size:.95rem;font-style:italic;position:relative}.hero__actions{flex-wrap:wrap;justify-content:center;gap:1rem;display:flex;position:relative}.hero__actions .btn{padding:.85rem 1.75rem;font-size:1.05rem}@media (width<=768px){.hero{padding:3rem 1rem 2.5rem}.hero__title{font-size:2rem}.hero__subtitle{margin-bottom:1.75rem;font-size:1.05rem}.hero__actions{flex-direction:column;align-items:center}}.feature-card{text-align:center;background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius);transition:var(--transition);box-shadow:0 2px 8px var(--color-card-shadow);flex-direction:column;align-items:center;padding:2rem 1.5rem;text-decoration:none;display:flex}.feature-card:hover{border-color:var(--color-primary);text-decoration:none;transform:translateY(-4px);box-shadow:0 8px 24px #0000001f}.feature-card__icon{margin-bottom:1rem;font-size:3rem;line-height:1}.feature-card__title{color:var(--color-dark);margin-bottom:.5rem;font-size:1.15rem;font-weight:700}.feature-card__description{color:var(--color-text-light);margin:0;font-size:.925rem;line-height:1.5}.question-form{gap:.75rem;margin-bottom:1.5rem;display:flex}.question-form__input{flex:1;padding:.85rem 1.15rem;font-size:1.05rem}.question-form__btn{white-space:nowrap;flex-shrink:0}@media (width<=600px){.question-form{flex-direction:column}.question-form__btn{width:100%}}.response-panel{flex-direction:column;gap:1rem;margin-top:1.5rem;display:flex}.response-panel__section{background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:0 1px 4px var(--color-card-shadow);padding:1.25rem 1.5rem}.response-panel__header{align-items:center;gap:.5rem;margin-bottom:.75rem;display:flex}.response-panel__icon{font-size:1.25rem;line-height:1}.response-panel__title{color:var(--color-dark);margin:0;font-size:1.05rem;font-weight:700}.response-panel__content{color:var(--color-text);font-size:.95rem;line-height:1.7}.response-panel__content p{margin-bottom:.5rem}.response-panel__content p:last-child{margin-bottom:0}.response-panel__content pre{margin-top:.5rem}.code-explainer__textarea{resize:vertical;width:100%;min-height:180px;font-family:Consolas,Monaco,Courier New,monospace;font-size:.9rem;line-height:1.6}.code-explainer__actions{justify-content:flex-end;margin-top:.75rem;margin-bottom:1.5rem;display:flex}.code-explainer__result{margin-top:1.5rem}.code-explainer__badge{background-color:var(--color-blue);color:var(--color-dark);border-radius:999px;align-items:center;gap:.375rem;margin-bottom:1rem;padding:.3rem .75rem;font-size:.85rem;font-weight:700;display:inline-flex}.code-explainer__summary{background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius);margin-bottom:1rem;padding:1.25rem}.code-explainer__summary p{margin:0;line-height:1.6}.code-explainer__concepts{flex-wrap:wrap;gap:.5rem;margin-bottom:1.25rem;display:flex}.code-explainer__concept-tag{background-color:var(--color-primary);color:var(--color-dark);border-radius:999px;padding:.25rem .75rem;font-size:.825rem;font-weight:700}.code-explainer__lines{flex-direction:column;gap:.75rem;display:flex}.code-explainer__line-item{background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:1rem}.code-explainer__line-code{background-color:var(--color-dark);color:#e5e7eb;border-radius:6px;margin-bottom:.5rem;padding:.5rem .75rem;font-family:Consolas,Monaco,Courier New,monospace;font-size:.875rem;display:block;overflow-x:auto}.code-explainer__line-explanation{color:var(--color-text-light);margin:0;font-size:.9rem;line-height:1.5}.code-explainer__empty{text-align:center;color:var(--color-text-light);padding:3rem 1rem}.code-explainer__empty-icon{margin-bottom:.75rem;font-size:3rem;display:block}.error-explainer__form{gap:.75rem;margin-bottom:1.5rem;display:flex}.error-explainer__input{flex:1;font-family:Consolas,Monaco,Courier New,monospace;font-size:1rem}.error-explainer__btn{white-space:nowrap;flex-shrink:0}.error-explainer__result{margin-top:1rem}.error-explainer__title{color:var(--color-error);align-items:center;gap:.5rem;margin-bottom:1rem;font-size:1.25rem;font-weight:700;display:flex}.error-explainer__section{background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius);margin-bottom:1rem;padding:1.25rem}.error-explainer__section-title{color:var(--color-dark);align-items:center;gap:.4rem;margin-bottom:.5rem;font-size:.95rem;font-weight:700;display:flex}.error-explainer__section p{margin:0;line-height:1.6}.error-explainer__list{margin:0;padding:0;list-style:none}.error-explainer__list li{padding:.4rem 0 .4rem 1.5rem;line-height:1.5;position:relative}.error-explainer__list li:before{content:"•";color:var(--color-accent);font-weight:700;position:absolute;left:.25rem}.error-explainer__numbered-list{counter-reset:steps;margin:0;padding:0;list-style:none}.error-explainer__numbered-list li{counter-increment:steps;padding:.5rem 0 .5rem 2rem;line-height:1.5;position:relative}.error-explainer__numbered-list li:before{content:counter(steps);background-color:var(--color-primary);width:1.5rem;height:1.5rem;color:var(--color-dark);border-radius:50%;justify-content:center;align-items:center;font-size:.8rem;font-weight:700;display:flex;position:absolute;top:.5rem;left:0}.error-explainer__empty{text-align:center;color:var(--color-text-light);padding:3rem 1rem}.error-explainer__empty-icon{margin-bottom:.75rem;font-size:3rem;display:block}.error-explainer__no-match{text-align:center;background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius);padding:2rem 1rem}.error-explainer__no-match-icon{margin-bottom:.5rem;font-size:2.5rem;display:block}@media (width<=600px){.error-explainer__form{flex-direction:column}.error-explainer__btn{width:100%}}.practice-card{background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:0 2px 8px var(--color-card-shadow);padding:1.5rem}.practice-card__topic{text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-light);margin-bottom:.5rem;font-size:.8rem;font-weight:700;display:inline-block}.practice-card__question{color:var(--color-dark);margin-bottom:1.25rem;font-size:1.1rem;font-weight:700;line-height:1.4}.practice-card__options{flex-direction:column;gap:.5rem;margin-bottom:1rem;display:flex}.practice-card__option{width:100%;font-family:var(--font-family);text-align:left;background-color:var(--color-bg);border:2px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);color:var(--color-text);padding:.75rem 1rem;font-size:.95rem;line-height:1.4;display:block}.practice-card__option:hover:not(:disabled){border-color:var(--color-primary);background-color:var(--color-bg-white)}.practice-card__option:disabled{cursor:default}.practice-card__option--correct{border-color:var(--color-success);color:var(--color-success);background-color:#10b9811a;font-weight:700}.practice-card__option--incorrect{border-color:var(--color-error);color:var(--color-error);background-color:#ef44441a}.practice-card__option--dimmed{opacity:.5}.practice-card__explanation{background-color:var(--color-bg);border-radius:var(--radius-sm);border-left:4px solid var(--color-primary);margin-top:1rem;padding:1rem;animation:.3s slideDown}.practice-card__explanation-label{color:var(--color-text-light);margin-bottom:.25rem;font-size:.85rem;font-weight:700}.practice-card__explanation p{margin:0;font-size:.925rem;line-height:1.5}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.learning-path-card{background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:0 2px 8px var(--color-card-shadow);transition:var(--transition);padding:1.75rem}.learning-path-card:hover{box-shadow:0 4px 16px #0000001f}.learning-path-card__header{align-items:center;gap:.75rem;margin-bottom:.75rem;display:flex}.learning-path-card__icon{font-size:2rem;line-height:1}.learning-path-card__title{color:var(--color-dark);margin:0;font-size:1.2rem;font-weight:700}.learning-path-card__description{color:var(--color-text-light);margin-bottom:1.25rem;font-size:.925rem;line-height:1.5}.learning-path-card__steps{margin:0;padding:0;list-style:none;position:relative}.learning-path-card__steps:before{content:"";background-color:var(--color-border);width:2px;position:absolute;top:12px;bottom:12px;left:11px}.learning-path-card__step{color:var(--color-text);align-items:center;gap:.75rem;padding:.4rem 0;font-size:.9rem;display:flex;position:relative}.learning-path-card__step-number{background-color:var(--color-primary);width:24px;height:24px;color:var(--color-dark);z-index:1;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.75rem;font-weight:700;display:flex;position:relative}.learning-path-card__step-text{line-height:1.4}