:root{--bg-color: #0f172a;--text-color: #f8fafc;--primary-color: #3b82f6;--secondary-color: #64748b;--accent-color: #8b5cf6;--glass-bg: rgba(30, 41, 59, .7);--glass-border: rgba(255, 255, 255, .1);--input-bg: rgba(15, 23, 42, .6);--success-color: #10b981;--font-family: "Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-color);line-height:1.6;min-height:100vh;background-image:radial-gradient(at 0% 0%,rgba(59,130,246,.15) 0px,transparent 50%),radial-gradient(at 100% 0%,rgba(139,92,246,.15) 0px,transparent 50%);background-attachment:fixed}#app{max-width:1200px;margin:0 auto;padding:2rem;display:flex;flex-direction:column;min-height:100vh}header{text-align:center;margin-bottom:3rem;padding:2rem 0}h1{font-size:3.5rem;font-weight:800;background:linear-gradient(to right,var(--primary-color),var(--accent-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:1rem;letter-spacing:-.05em}.subtitle{color:var(--secondary-color);font-size:1.2rem;max-width:600px;margin:0 auto}main{flex:1;display:grid;grid-template-columns:300px 1fr;gap:2rem}nav{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:1rem;padding:1.5rem;height:fit-content}nav ul{list-style:none}nav li{margin-bottom:.5rem}nav a{display:block;padding:.75rem 1rem;color:var(--secondary-color);text-decoration:none;border-radius:.5rem;transition:all .2s ease;font-weight:500}nav a:hover,nav a.active{background:#3b82f61a;color:var(--primary-color)}.calculator-container{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:1.5rem;padding:3rem;box-shadow:0 25px 50px -12px #00000040}.calculator-grid{display:grid;gap:2rem;max-width:600px;margin:0 auto}.input-group{display:flex;flex-direction:column;gap:.5rem}label{font-size:.9rem;font-weight:600;color:var(--secondary-color);text-transform:uppercase;letter-spacing:.05em}input{background:var(--input-bg);border:1px solid var(--glass-border);border-radius:.75rem;padding:1rem;color:var(--text-color);font-size:1.2rem;font-family:var(--font-family);transition:all .2s ease}input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #3b82f633}.result-display{margin-top:2rem;padding:2rem;background:#10b9811a;border:1px solid rgba(16,185,129,.2);border-radius:1rem;text-align:center;animation:fadeIn .5s ease}.result-value{font-size:3rem;font-weight:800;color:var(--success-color);line-height:1;margin-bottom:.5rem}.result-label{color:var(--secondary-color);font-size:1rem}.seo-content{margin-top:4rem;padding-top:2rem;border-top:1px solid var(--glass-border);color:var(--secondary-color)}.seo-content h2{color:var(--text-color);margin-bottom:1rem;font-size:1.5rem}.seo-content p{margin-bottom:1rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 768px){main{grid-template-columns:1fr}h1{font-size:2.5rem}.calculator-container{padding:1.5rem}}