:root{--fallback-primary:#3b82f6;--fallback-success:#10b981;--fallback-error:#ef4444;--fallback-bg:#fff;--fallback-border:#e2e8f0;--fallback-shadow:0 4px 6px -1px #0000001a}*{box-sizing:border-box;margin:0;padding:0}:not(.katex):not(.katex *){font-family:Nunito,sans-serif}html{scroll-behavior:smooth;margin:0;padding:0}body{background-color:var(--bg-secondary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;padding:0;line-height:1.6}body[data-page-type=welcome],body[data-page-type=auth]{padding:0}h1,h2,h3,h4,h5,h6{font-weight:var(--font-semibold);margin:0;line-height:1.3}h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}h4{font-size:var(--text-xl)}h5{font-size:var(--text-lg)}h6{font-size:var(--text-base)}p{color:var(--text-secondary);margin:0}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border-medium);border-radius:var(--border-radius)}::-webkit-scrollbar-thumb:hover{background:var(--border-medium)}*{scrollbar-width:thin;scrollbar-color:var(--border-medium)transparent}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-spin{animation:1s linear infinite spin}.fade-in{animation:.6s ease-out fadeIn}.slide-up{animation:.6s ease-out slideUp}.container{max-width:1200px;padding:0 var(--space-4);margin:0 auto}.glass-effect{background:var(--glass);-webkit-backdrop-filter:blur(var(--space-3));backdrop-filter:blur(var(--space-3));border:1px solid var(--border-light)}.gradient-text{background:var(--gradient-hero);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.slider-thumb::-webkit-slider-thumb{appearance:none;height:var(--space-6);width:var(--space-6);background:var(--primary);cursor:pointer;border:2px solid var(--white);box-shadow:var(--shadow-sm);border-radius:50%}.slider-thumb::-moz-range-thumb{height:var(--space-6);width:var(--space-6);background:var(--primary);cursor:pointer;border:2px solid var(--white);box-shadow:var(--shadow-sm);border-radius:50%}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.focus-visible:focus-visible{outline:2px solid var(--primary,#3b82f6);outline-offset:2px}.skip-link{background:var(--primary,#3b82f6);color:#fff;z-index:1000;border-radius:4px;padding:8px;text-decoration:none;transition:top .3s;position:absolute;top:-40px;left:6px}.skip-link:focus{top:6px}@media (prefers-contrast:high){*{border-color:currentColor!important}}@media (min-width:768px) and (max-width:1024px){html,body{overflow-x:hidden}.container{padding:0 var(--space-6)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@media (max-width:640px){body{padding:64px 0 0}.container{padding:0 var(--space-4);max-width:100%}}