*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;color:#333;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;padding:20px}.container{max-width:1200px;margin:0 auto;background:#fff;border-radius:20px;box-shadow:0 20px 60px #0000004d;overflow:hidden}header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:60px 40px;text-align:center}header h1{font-size:3rem;margin-bottom:10px;font-weight:800}.subtitle{font-size:1.2rem;margin-bottom:10px;opacity:.95}.credit{font-size:.9rem;opacity:.85;margin-bottom:30px}.credit a{color:#fff;text-decoration:underline}.search-box{max-width:600px;margin:0 auto}#searchInput{width:100%;padding:15px 20px;font-size:1rem;border:none;border-radius:50px;outline:none;box-shadow:0 4px 15px #0003}main{padding:40px}.category{margin-bottom:50px;transition:opacity .3s ease}.category.hidden{display:none}.category h2{font-size:2rem;margin-bottom:25px;color:#667eea;border-bottom:3px solid #667eea;padding-bottom:10px}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:25px}.tool-card{background:#fff;border:2px solid #e0e0e0;border-radius:12px;padding:25px;transition:all .3s ease;cursor:pointer}.tool-card:hover{transform:translateY(-5px);box-shadow:0 8px 20px #667eea4d;border-color:#667eea}.tool-card.hidden{display:none}.tool-card h3{font-size:1.3rem;margin-bottom:12px;color:#333}.tool-card h3 a{color:#667eea;text-decoration:none;transition:color .2s ease}.tool-card h3 a:hover{color:#764ba2}.tool-card p{color:#666;font-size:.95rem;line-height:1.6}footer{background:#f8f9fa;padding:30px;text-align:center;color:#666;border-top:1px solid #e0e0e0}footer a{color:#667eea;text-decoration:none}footer a:hover{text-decoration:underline}.no-results{text-align:center;padding:60px 20px;color:#999;font-size:1.2rem}@media(max-width:768px){body{padding:10px}header{padding:40px 20px}header h1{font-size:2rem}.subtitle{font-size:1rem}main{padding:20px}.category h2{font-size:1.5rem}.tools-grid{grid-template-columns:1fr;gap:15px}.tool-card{padding:20px}}