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rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--transition: all .3s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,sans-serif;background:linear-gradient(135deg,#f5f7fa,#c3cfe2);color:var(--dark);min-height:100vh;overflow-x:hidden}.app{min-height:100vh;display:flex;flex-direction:column}.app-main{flex:1;padding:2rem;animation:fadeIn .8s ease-out}.app-loading{display:flex;flex-direction:column;justify-content:center;align-items:center;height:100vh;background:linear-gradient(135deg,var(--darker) 0%,var(--dark) 100%);color:#fff}.loading-animation{display:flex;margin-bottom:2rem;position:relative}.math-symbol{font-size:3rem;margin:0 .5rem;opacity:0;animation:symbolPulse 1.8s infinite;font-family:JetBrains Mono,monospace}.math-symbol:nth-child(1){animation-delay:.1s}.math-symbol:nth-child(2){animation-delay:.3s}.math-symbol:nth-child(3){animation-delay:.5s}.math-symbol:nth-child(4){animation-delay:.7s}.math-symbol:nth-child(5){animation-delay:.9s}.loading-text{font-size:1.8rem;font-weight:600;letter-spacing:1px;background:linear-gradient(90deg,var(--primary),var(--secondary),var(--accent));background-size:200% auto;background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent;animation:textShine 3s linear infinite}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes symbolPulse{0%{opacity:0;transform:translateY(20px) scale(.8)}50%{opacity:1;transform:translateY(0) scale(1.2)}to{opacity:0;transform:translateY(-20px) scale(.8)}}@keyframes textShine{0%{background-position:0% center}to{background-position:200% center}}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-10px)}to{transform:translateY(0)}}@keyframes glow{0%{box-shadow:0 0 5px #6366f180}50%{box-shadow:0 0 20px #6366f1cc}to{box-shadow:0 0 5px #6366f180}}@media (max-width: 768px){.app-main{padding:1rem}.math-symbol{font-size:2rem}.loading-text{font-size:1.5rem}}@media (max-width: 480px){.app-main{padding:.5rem}.math-symbol{font-size:1.5rem;margin:0 .25rem}.loading-text{font-size:1.2rem}}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--light)}::-webkit-scrollbar-thumb{background:var(--primary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--primary-dark)}