@import"https://fonts.googleapis.com/css2?family=Fredoka:wght@500;600;700&family=Nunito:wght@600;700&family=DM+Sans:wght@400;500;600;700&display=swap";:root{--ink: #1b1233;--ink-strong: #140b2b;--muted: #5e4e78;--primary: #c026d3;--primary-strong: #a114b6;--accent: #ff7b72;--secondary: #fbbf24;--secondary-alt: #22c55e;--surface: #fdf7ff;--surface-strong: #ffffff;--surface-glass: rgba(255, 255, 255, .75);--border-soft: #eadff7;--shadow-soft: 0 22px 68px -26px rgba(20, 11, 43, .35);--shadow-card: 0 26px 70px -30px rgba(27, 18, 51, .45);--bg-mesh: radial-gradient(120% 120% at 20% 20%, rgba(192,38,211,.18), transparent 38%), radial-gradient(90% 90% at 80% 0%, rgba(251,191,36,.16), transparent 32%), linear-gradient(180deg, #fdf7ff 0%, #f8fbff 100%)}html,body{height:100%}body.neo-theme,body{background:var(--bg-mesh);color:var(--ink-strong);font-family:DM Sans,system-ui,-apple-system,Segoe UI,sans-serif;font-weight:500;letter-spacing:.1px;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-family:Fredoka,Nunito,DM Sans,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink-strong);letter-spacing:-.015em}p,span,li,input,button{color:var(--ink-strong)}.neo-link{color:var(--primary);text-decoration:none;font-weight:700}.neo-link:hover{text-decoration:underline;text-underline-offset:4px}.neo-container{backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.neo-nav{background:linear-gradient(120deg,#c026d3f2,#fbbf24e6);color:#fdfbf4;border-bottom:1px solid rgba(255,255,255,.18);box-shadow:0 14px 50px -22px #1b123399;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.neo-nav a{color:#fff8ef;font-weight:800}.neo-nav a:hover{color:#fff}.neo-footer{background:linear-gradient(180deg,#ffffffd9,#fdf7fff2);border-top:1px solid rgba(192,38,211,.12);color:var(--ink-strong);box-shadow:0 -14px 45px -22px #1b12332e}.neo-hero{background:radial-gradient(140% 140% at 20% 20%,rgba(192,38,211,.16),transparent 40%),radial-gradient(120% 120% at 80% 0%,rgba(251,191,36,.2),transparent 32%),linear-gradient(135deg,#c026d314,#ff7b7214);border-bottom:1px solid rgba(27,18,51,.08)}.neo-card{background:var(--surface-strong);border:1px solid var(--border-soft);border-radius:1.35rem;box-shadow:var(--shadow-card)}.neo-badge{background:linear-gradient(135deg,#c026d326,#fbbf242e);color:var(--primary-strong);border:1px solid rgba(192,38,211,.24);border-radius:1rem;box-shadow:0 12px 32px -18px #c026d399}.neo-button{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.9rem 1.3rem;font-weight:800;border:1px solid transparent;border-radius:999px;transform:translateZ(0) scale(1);transition:transform .16s ease,box-shadow .2s ease,background .18s ease,border-color .18s ease,filter .16s ease;box-shadow:0 16px 38px -18px #1b12338c}.neo-button:hover{transform:translateY(-2px) scale(1.02) rotate(-.5deg);box-shadow:0 26px 48px -22px #1b123399}.neo-button:active{transform:translateY(0)}.neo-button:focus-visible{outline:2px solid rgba(192,38,211,.7);outline-offset:2px;box-shadow:0 0 0 4px #c026d329}.neo-button--primary{background:linear-gradient(135deg,var(--primary) 0%,#e11ad5 100%);color:#fff}.neo-button--accent{background:linear-gradient(135deg,var(--secondary) 0%,#ffd166 100%);color:#1b1233}.neo-button--gold,.neo-button--outline{background:#fff;color:var(--ink-strong);border-color:var(--border-soft)}input,select,textarea{border:1px solid var(--border-soft)!important;border-radius:.85rem!important;box-shadow:inset 0 1px 1px #0f172a0a!important;background:#fff!important;transition:border-color .16s ease,box-shadow .18s ease,transform .14s ease!important}input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none!important;border-color:var(--primary);box-shadow:0 0 0 4px #c026d329,inset 0 1px 1px #0f172a0f!important;transform:translateY(-1px)}.neo-slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:44px;border-radius:999px!important;background:linear-gradient(90deg,rgba(236,72,153,.95) var(--slider-pct, 0%),rgba(229,231,235,.95) var(--slider-pct, 0%))!important;border:1px solid rgba(236,72,153,.28)!important;box-shadow:inset 0 2px 8px #0f172a1a,0 18px 42px -28px #ec48998c!important;transition:background .18s ease,box-shadow .2s ease,filter .16s ease,transform .16s ease;cursor:pointer;padding:0!important}.neo-slider:hover:not(:disabled){filter:brightness(1.02) saturate(1.03);box-shadow:inset 0 2px 10px #0f172a1f,0 20px 52px -30px #ec4899a6!important}.neo-slider:disabled{cursor:not-allowed;filter:grayscale(.05);opacity:.85}.neo-slider::-webkit-slider-runnable-track{height:14px;border-radius:999px;background:transparent}.neo-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:34px;height:34px;border-radius:999px;background:radial-gradient(circle at 30% 30%,#fff,#fde68a 32%,#f472b6 62%,#a855f7);border:3px solid #ffffff;box-shadow:0 14px 26px -14px #ec4899b3,0 0 0 7px #ec489924;margin-top:-10px;transition:transform .15s ease,box-shadow .18s ease}.neo-slider:active::-webkit-slider-thumb{transform:scale(1.05);box-shadow:0 18px 32px -14px #ec4899bf,0 0 0 8px #ec48992e}.neo-slider::-moz-range-track{height:14px;border-radius:999px;background:#e5e7ebf2}.neo-slider::-moz-range-progress{height:14px;border-radius:999px;background:#ec4899f2}.neo-slider::-moz-range-thumb{width:34px;height:34px;border-radius:999px;background:radial-gradient(circle at 30% 30%,#fff,#fde68a 32%,#f472b6 62%,#a855f7);border:3px solid #ffffff;box-shadow:0 14px 26px -14px #ec4899b3,0 0 0 7px #ec489924;transition:transform .15s ease,box-shadow .18s ease}.slider-histogram{position:relative;border-radius:1.15rem;background:linear-gradient(180deg,#ffffffeb,#f9fafbeb);border:1px solid rgba(236,72,153,.14);box-shadow:inset 0 1px #ffffffb8,0 18px 50px -40px #ec489973;overflow:hidden}.slider-histogram:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(to top,rgba(15,23,42,.08) 1px,transparent 1px),linear-gradient(to right,rgba(15,23,42,.06) 1px,transparent 1px);background-size:100% 25%,20% 100%;opacity:.65;pointer-events:none}.slider-histogram-bars{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:flex-end;gap:.35rem;padding:.9rem .95rem .75rem}.slider-histogram-bar{flex:1 1 0%;border-radius:.65rem .65rem .22rem .22rem;background:linear-gradient(to top,#ec4899f2,#a855f7f2);opacity:.9;transform-origin:bottom;transform:scaleY(0);animation:sliderBarGrow .7s cubic-bezier(.19,1,.22,1) forwards;animation-delay:var(--bar-delay, 0ms);will-change:transform}.slider-histogram-bar:hover{filter:brightness(1.05) saturate(1.06)}.slider-histogram-bar--correct{background:linear-gradient(to top,#22c55ef2,#10b981f2);opacity:1;box-shadow:0 0 0 2px #22c55e47,0 20px 42px -26px #22c55eb3}@keyframes sliderBarGrow{0%{transform:scaleY(0);filter:saturate(.92)}to{transform:scaleY(1);filter:saturate(1)}}@media (prefers-reduced-motion: reduce){.slider-histogram-bar{animation:none;transform:scaleY(1)}}.neo-shadow{box-shadow:var(--shadow-soft)!important}.neo-shadow-md{box-shadow:var(--shadow-card)!important}.neo-shadow-lg{box-shadow:0 35px 80px -45px #0f172a8c!important}.text-sunset-rose{color:var(--accent)}.bg-sunset-cream{background:var(--surface)}.glass-panel{background:var(--surface-glass);border:1px solid rgba(255,255,255,.55);box-shadow:0 22px 70px -32px #1b123366;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-radius:1.4rem}.interactive-card{transition:transform .16s ease,box-shadow .2s ease,border-color .18s ease;border:1px solid var(--border-soft)}.interactive-card:hover{transform:translateY(-4px);box-shadow:0 30px 80px -46px #1b123399;border-color:#c026d34d}.pop-in{opacity:0;transform:translateY(20px) scale(.96);transition:opacity .32s ease,transform .52s cubic-bezier(.175,.885,.32,1.275)}.pop-in.show{opacity:1;transform:translateY(0) scale(1)}@keyframes flashNewQuestion{0%,to{background-color:#f9fafb}25%{background-color:#eef2ff}50%{background-color:#e0e7ff}75%{background-color:#eef2ff}}@keyframes fadeOutQuestion{0%{opacity:1;transform:scale(1);max-height:2000px;margin-bottom:2rem}to{opacity:0;transform:scale(.97);max-height:0;margin-bottom:0;padding-top:0;padding-bottom:0}}.question-card{transition:all .3s ease-out}.question-newly-added{animation:flashNewQuestion 1s ease-in-out}.question-deleting{animation:fadeOutQuestion .3s ease-out forwards;overflow:hidden}@keyframes pulseGlow{0%,to{transform:translateY(0);box-shadow:0 14px 30px -18px #1b12338c}50%{transform:translateY(-2px);box-shadow:0 22px 44px -18px #c026d380}}@keyframes shake{0%{transform:translate(0)}20%{transform:translate(-2px)}40%{transform:translate(2px)}60%{transform:translate(-1px)}80%{transform:translate(1px)}to{transform:translate(0)}}.cta-pulse{animation:pulseGlow 2.4s ease-in-out infinite}.cta-shake:hover{animation:shake .28s ease-in-out}.text-white .katex,.text-white .katex *{color:#fff!important}