@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&display=swap";:root{--bg-gradient-start: #ffffff;--bg-gradient-end: #ffffff;--primary: #6366f1;--primary-glow: rgba(99, 102, 241, .4);--secondary: #8b5cf6;--accent: #0891b2;--glass-bg: rgba(0, 0, 0, .05);--glass-border: rgba(0, 0, 0, .1);--text-main: #1e293b;--text-muted: #64748b;--success: #4ade80;--error: #f87171;--warning: #fbbf24;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--touch-target: 44px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Outfit,sans-serif;background:var(--bg-gradient-start);color:var(--text-main);min-height:100vh;overflow-x:hidden}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--glass-border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--primary)}.glass-panel{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:0 4px 20px #0003}.text-gradient{background:linear-gradient(135deg,var(--primary),var(--secondary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.text-success{color:var(--success)}.text-error{color:var(--error)}.text-warning{color:var(--warning)}.text-muted{color:var(--text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:12px 24px;min-height:var(--touch-target);border-radius:var(--radius-sm);font-weight:600;font-size:1rem;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,opacity .15s ease;text-decoration:none;border:none;font-family:inherit}.btn:active{transform:scale(.98)}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;border:none;padding:12px 24px;border-radius:var(--radius-sm);font-weight:600;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:var(--touch-target);font-size:1rem;font-family:inherit}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 25px var(--primary-glow)}.btn-secondary{background:var(--glass-bg);color:var(--text-main);border:1px solid var(--glass-border);padding:12px 24px;border-radius:var(--radius-sm);font-weight:600;cursor:pointer;transition:border-color .15s ease;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:var(--touch-target);font-size:1rem;font-family:inherit}.btn-secondary:hover{border-color:var(--primary)}.btn-ghost{background:transparent;color:var(--text-muted);border:none;padding:12px 24px;border-radius:var(--radius-sm);cursor:pointer;transition:color .15s ease;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:var(--touch-target);font-size:1rem;font-family:inherit}.btn-ghost:hover{color:var(--text-main)}.input{width:100%;padding:14px 16px;font-size:1.1rem;border-radius:var(--radius-sm);border:2px solid var(--glass-border);background:#0000004d;color:var(--text-main);outline:none;transition:border-color .2s ease,box-shadow .2s ease;font-family:inherit;min-height:var(--touch-target)}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #6366f133}.input::placeholder{color:var(--text-muted)}.input-lg{padding:18px 20px;font-size:1.5rem;text-align:center}.card{background:#ffffff08;border:1px solid var(--glass-border);border-radius:var(--radius-md);padding:1.5rem;transition:transform .2s ease,border-color .2s ease}.card:hover{transform:translateY(-2px);border-color:#fff3}.card-interactive{cursor:pointer}.card-interactive:hover{border-color:var(--primary)}.badge{display:inline-flex;align-items:center;gap:.25rem;padding:4px 10px;font-size:.75rem;font-weight:600;border-radius:9999px;text-transform:uppercase;letter-spacing:.5px}.badge-gold{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#1e293b}.badge-silver{background:linear-gradient(135deg,#cbd5e1,#94a3b8);color:#1e293b}.badge-bronze{background:linear-gradient(135deg,#d97706,#b45309);color:#fff}.timer{font-size:2.5rem;font-weight:700;font-variant-numeric:tabular-nums}.timer-warning{color:var(--error)}.timer-normal{color:var(--accent)}.container{max-width:1200px;margin:0 auto;padding:2rem}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.gap-sm{gap:.5rem}.gap-md{gap:1rem}.gap-lg{gap:2rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .3s ease-out forwards}@media(max-width:768px){.container{padding:1rem}.btn,.btn-primary,.btn-secondary{padding:14px 20px;width:100%}.input-lg{font-size:1.25rem}}.navbar{position:sticky;top:0;z-index:1000;padding:.75rem 1.5rem;margin-bottom:2rem}.navbar-container{display:flex;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto}.navbar-logo{display:flex;align-items:center;gap:.5rem;font-size:1.3rem;font-weight:700;text-decoration:none}.logo-icon{width:28px;height:28px}.menu-icon{display:none;cursor:pointer;padding:8px;border-radius:var(--radius-sm);transition:background .15s ease}.menu-icon:hover{background:var(--glass-bg)}.nav-menu{display:flex;align-items:center;gap:.25rem;list-style:none}.nav-item{position:relative}.nav-link{display:flex;align-items:center;gap:.5rem;padding:.6rem 1rem;color:var(--text-main);text-decoration:none;border-radius:var(--radius-sm);font-weight:500;font-size:.95rem;transition:color .15s ease,background .15s ease;min-height:var(--touch-target)}.nav-link:hover{color:var(--text-main);background:#ffffff0d}.nav-link.active{color:var(--accent);background:#22d3ee1a}.nav-text{display:inline}.nav-divider{width:1px;height:24px;background:var(--glass-border);margin:0 .5rem}@media(max-width:900px){.menu-icon{display:flex;align-items:center;justify-content:center}.nav-menu{position:fixed;top:70px;left:0;right:0;flex-direction:column;background:var(--bg-gradient-start);border-bottom:1px solid var(--glass-border);padding:1rem;gap:.5rem;transform:translateY(-150%);opacity:0;transition:transform .3s ease,opacity .3s ease;pointer-events:none}.nav-menu.active{transform:translateY(0);opacity:1;pointer-events:auto}.nav-link{width:100%;justify-content:flex-start;padding:1rem}.nav-divider{width:100%;height:1px;margin:.5rem 0}}@media(max-width:600px){.nav-text{display:inline}.navbar{padding:.75rem 1rem}}.math-background{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}.math-overlay{position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,rgba(99,102,241,.08) 0%,transparent 40%),radial-gradient(circle at 80% 80%,rgba(139,92,246,.08) 0%,transparent 40%),radial-gradient(circle at 50% 50%,rgba(34,211,238,.05) 0%,transparent 50%)}.math-pattern{position:absolute;inset:0;opacity:.03;background-image:repeating-linear-gradient(45deg,transparent,transparent 50px,rgba(0,0,0,.03) 50px,rgba(0,0,0,.03) 51px)}