@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap";:root{--bg-app: #0a0e17;--bg-panel: rgba(255, 255, 255, .05);--bg-panel-hover: rgba(255, 255, 255, .08);--bg-card: #151b2e;--primary: #00f2ea;--primary-dim: rgba(0, 242, 234, .2);--primary-glow: 0 0 20px rgba(0, 242, 234, .4);--secondary: #b026ff;--secondary-dim: rgba(176, 38, 255, .2);--text-main: #ffffff;--text-muted: #9ca3af;--gradient-main: linear-gradient(135deg, #0a0e17 0%, #151b2e 100%);--gradient-card: linear-gradient(145deg, rgba(255, 255, 255, .07) 0%, rgba(255, 255, 255, .02) 100%);--font-main: "Inter", system-ui, -apple-system, sans-serif;--space-xs: .5rem;--space-sm: 1rem;--space-md: 1.5rem;--space-lg: 2rem;--space-xl: 3rem;--radius-sm: 8px;--radius-md: 16px;--radius-lg: 24px;--glass: blur(12px);--border-light: 1px solid rgba(255, 255, 255, .1);--shadow-card: 0 8px 32px rgba(0, 0, 0, .3);--transition-fast: .2s ease;--transition-medium: .4s cubic-bezier(.175, .885, .32, 1.275)}nav{display:flex;justify-content:center;align-items:center;position:relative;z-index:1000}.nav-brand{position:absolute;left:1rem;top:1rem;font-weight:700;font-size:1.5rem;color:var(--primary)}.nav-links{display:flex;gap:2rem;background:#ffffff0d;padding:.75rem 2rem;border-radius:50px;border:1px solid rgba(255,255,255,.1);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);margin-top:3.5rem}.nav-item{position:relative;cursor:pointer;color:var(--text-main);font-weight:500;transition:color .2s;display:flex;align-items:center;gap:.5rem}.nav-item:after{content:"▼";font-size:.6em;opacity:.5;transition:transform .2s}.nav-item:hover:after{transform:rotate(180deg);opacity:1}.nav-item:hover{color:var(--primary)}.dropdown{position:absolute;top:150%;left:50%;transform:translate(-50%) translateY(10px);background:var(--bg-card);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-sm);box-shadow:0 10px 30px #00000080;min-width:240px;opacity:0;visibility:hidden;transition:all .2s cubic-bezier(.16,1,.3,1);overflow:hidden;z-index:1001}.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translate(-50%) translateY(0)}.dropdown-item{display:block;padding:.75rem 1rem;color:var(--text-muted);text-decoration:none;font-size:.9rem;border-bottom:1px solid rgba(255,255,255,.05);transition:background .2s,color .2s}.dropdown-item:last-child{border-bottom:none}.dropdown-item:hover{background:#ffffff0d;color:var(--text-main)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background:var(--bg-app);background-image:var(--gradient-main);color:var(--text-main);min-height:100vh;line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}h1,h2,h3{font-weight:700;line-height:1.2}h1{font-size:3rem;background:linear-gradient(to right,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:var(--space-md)}h2{font-size:1.8rem;margin-bottom:var(--space-sm)}p{color:var(--text-muted);margin-bottom:var(--space-sm)}.container{max-width:1200px;margin:0 auto;padding:0 var(--space-md)}.card{background:var(--bg-panel);backdrop-filter:var(--glass);-webkit-backdrop-filter:var(--glass);border:var(--border-light);border-radius:var(--radius-md);padding:var(--space-lg);box-shadow:var(--shadow-card);transition:transform var(--transition-medium),box-shadow var(--transition-fast)}.card:hover{transform:translateY(-5px);box-shadow:0 12px 40px #0006;background:var(--bg-panel-hover);border-color:#fff3}.btn{display:inline-block;padding:12px 24px;background:var(--primary);color:#000;font-weight:600;border-radius:var(--radius-sm);text-decoration:none;border:none;cursor:pointer;transition:all var(--transition-fast);font-size:1rem}.btn:hover{background:#fff;box-shadow:var(--primary-glow);transform:translateY(-2px)}.btn-secondary{background:transparent;border:1px solid var(--primary);color:var(--primary)}.btn-secondary:hover{background:var(--primary-dim);color:#fff}input,select{width:100%;padding:12px;background:#0000004d;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-sm);color:#fff;margin-bottom:var(--space-sm);outline:none;font-family:inherit;transition:border-color var(--transition-fast)}input:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-dim)}label{display:block;font-size:.9rem;margin-bottom:.5rem;color:var(--text-muted)}.grid-2{display:grid;grid-template-columns:1fr;gap:var(--space-lg)}@media(min-width:768px){.grid-2{grid-template-columns:1fr 1fr}}.calculator-section{padding:var(--space-xl) 0;display:none;animation:fadeIn .5s ease}.calculator-section.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}