@import "https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600;700;800&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap";:root{--primary:#10b981;--primary-hover:#059669;--secondary:#3b82f6;--accent:#f59e0b;--background:#f8fafc;--surface:#fff;--text-main:#1e293b;--text-muted:#64748b;--border:#e2e8f0;--shadow:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--glass:#ffffffb3;--glass-border:#ffffff4d;--font-body:"IBM Plex Sans", "Be Vietnam Pro", sans-serif;--font-heading:"Be Vietnam Pro", "IBM Plex Sans", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);color:var(--text-main);-webkit-font-smoothing:antialiased;background:radial-gradient(circle at 0 0,#e0f2fe 0%,#f8fafc 50%,#f1f5f9 100%) fixed;min-height:100vh;line-height:1.5;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:var(--text-main);font-weight:700}.glass-card{background:var(--glass);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);box-shadow:var(--shadow);border-radius:1.5rem}.btn{cursor:pointer;font-weight:600;font-family:var(--font-heading);border:none;border-radius:.75rem;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;transition:all .3s cubic-bezier(.4,0,.2,1);display:inline-flex}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-2px);box-shadow:0 10px 15px -3px #10b9814d}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-10px)}to{transform:translateY(0)}}.float{animation:4s ease-in-out infinite float}@media print{body{display:none!important}}.quiz-container-secure{-webkit-user-select:none;user-select:none}.is-blurred{filter:blur(8px);opacity:.5;pointer-events:none;transition:all .2s}