* {margin:0;padding:0;box-sizing:border-box}body{font-family:'Arial',sans-serif;line-height:1.6;color:#333;background-color:#f5f5f5;min-height:100vh;display:flex;flex-direction:column}.container{max-width:1200px;margin:0 auto;padding:0 20px}.navbar{background-color:#333;color:#fff;padding:1rem 0;position:sticky;top:0;z-index:1000}.navbar .container{display:flex;justify-content:space-between;align-items:center}.menu-toggle{display:none;cursor:pointer}.menu-toggle .bar{display:block;width:25px;height:3px;margin:5px auto;background-color:#fff;transition:all .3s ease-in-out}.logo{font-size:1.5rem;font-weight:bold;color:#fff;text-decoration:none}.nav-links{display:flex;list-style:none}.nav-links li{margin-left:20px}.nav-links a{color:#fff;text-decoration:none;font-size:.9rem;transition:color .3s}.nav-links a:hover{color:#007bff}.hero{padding:4rem 0;text-align:center}.hero h1{font-size:2.5rem;margin-bottom:1rem;color:#333}.hero p{font-size:1.2rem;margin-bottom:2rem;color:#666}.tool-categories{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-top:2rem}.category-card{background-color:#fff;border-radius:8px;padding:2rem;text-decoration:none;color:#333;box-shadow:0 2px 10px rgba(0,0,0,.1);transition:transform .3s,box-shadow .3s}.category-card:hover{transform:translateY(-5px);box-shadow:0 5px 20px rgba(0,0,0,.15)}.category-card h3{font-size:1.2rem;margin-bottom:.5rem}.category-card p{font-size:.9rem;color:#666}footer{background-color:#333;color:#fff;text-align:center;padding:1.5rem 0;margin-top:4rem}footer p{margin:.5rem 0}footer a{color:#ffffff !important;text-decoration:none !important}footer a:hover{text-decoration:none !important;color:#ffffff !important}main{flex:1}.tool-page{padding:2rem 0;flex:1}.tool-page h1{font-size:2rem;margin-bottom:2rem;text-align:center}.tool-container{background-color:#fff;border-radius:8px;padding:2rem;box-shadow:0 2px 10px rgba(0,0,0,.1)}.tool-section{margin-bottom:2rem;padding-bottom:2rem;border-bottom:1px solid #eee}.tool-section:last-child{border-bottom:none}.tool-section h2{font-size:1.5rem;margin-bottom:1rem;color:#333}.tool-section p{margin-bottom:1.5rem;color:#666}.btn{display:inline-block;padding:10px 20px;background-color:#007bff;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:1rem;transition:background-color .3s}.btn:hover{background-color:#0056b3}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:bold}.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px;border:1px solid #ddd;border-radius:4px;font-size:1rem}@media (max-width:768px){.navbar .container{flex-direction:row}.menu-toggle{display:block}.nav-links{position:fixed;left:-100%;top:70px;flex-direction:column;background-color:#333;width:100%;text-align:center;transition:all .3s ease-in-out}.nav-links.active{left:0}.nav-links li{margin:1.5rem 0}.hero h1{font-size:2rem}.tool-categories{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}}@media (max-width:480px){.hero h1{font-size:1.5rem}.hero p{font-size:1rem}.category-card{padding:1.5rem}.tool-container{padding:1.5rem}}