:root{--primary-color:#3498db;--secondary-color:#2980b9;--accent-color:#2ecc71;--dark-color:#2c3e50;--text-color:#333;--light-gray:#f5f5f5;--medium-gray:#e0e0e0;--white:#fff;--max-width:1200px;--border-radius:8px;--box-shadow:0 4px 6px rgba(0, 0, 0, 0.1);--transition:all 0.3s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:var(--text-color);background-color:var(--light-gray)}.back-link{color:#fff;text-decoration:none;display:inline-block;margin:10px 0;transition:var(--transition);font-size:20px;background-color:var(--primary-color);padding:8px 16px;border-radius:var(--border-radius);box-shadow:var(--box-shadow)}.back-link:hover{color:#fff;text-decoration:none;background-color:var(--secondary-color);transform:translateY(-2px)}.back-link i{margin-right:8px}header{background-color:var(--primary-color);color:var(--white);padding:1rem 0;box-shadow:var(--box-shadow)}.container{max-width:var(--max-width);margin:0 auto;padding:0 2rem}header .container{display:flex;justify-content:space-between;align-items:center}header h1{font-size:1.8rem;margin:0}header nav a{color:var(--white);text-decoration:none;margin-left:1.5rem;font-weight:500;transition:var(--transition)}header nav a:hover{opacity:.8}.tool-section{max-width:var(--max-width);margin:2rem auto;padding:2rem;background-color:var(--white);border-radius:var(--border-radius);box-shadow:var(--box-shadow)}h2{color:var(--primary-color);margin-bottom:1.5rem;font-size:2rem;position:relative;padding-bottom:.5rem}h2::after{content:'';position:absolute;bottom:0;left:0;width:60px;height:3px;background-color:var(--accent-color)}h3{color:var(--secondary-color);margin:1.5rem 0 1rem;font-size:1.5rem}p{margin-bottom:1.2rem;font-size:1.05rem;line-height:1.7}#about{position:relative;overflow:hidden}#about::before{content:'';position:absolute;top:-50px;right:-50px;width:200px;height:200px;background-color:rgb(46 204 113 / .1);border-radius:50%;z-index:0}.about-content{position:relative;z-index:1}.about-intro{font-size:1.1rem;line-height:1.8;margin-bottom:2rem;padding:1.5rem;background-color:rgb(52 152 219 / .05);border-left:4px solid var(--primary-color);border-radius:0 var(--border-radius) var(--border-radius) 0}.feature-card{display:flex;margin-bottom:2rem;background:var(--white);border-radius:var(--border-radius);overflow:hidden;box-shadow:var(--box-shadow)}.feature-card.reverse{flex-direction:row-reverse}.feature-text{flex:1;padding:1.5rem}.feature-image{flex:1;min-height:200px;background-size:cover;background-position:center}.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin:2rem 0}.service-card{background:var(--white);border-radius:var(--border-radius);padding:1.5rem;box-shadow:var(--box-shadow);border-top:3px solid var(--accent-color);transition:var(--transition)}.service-card:hover{transform:translateY(-5px);box-shadow:0 10px 20px rgb(0 0 0 / .1)}.service-card h4{color:var(--dark-color);margin-bottom:.8rem;font-size:1.2rem}.service-card .icon{font-size:2rem;color:var(--primary-color);margin-bottom:1rem}.service-card a{text-decoration:none;color:inherit;display:block;height:100%}.service-card a:hover h4{color:var(--primary-color)}.benefits-list{background-color:rgb(41 128 185 / .05);padding:1.5rem;border-radius:var(--border-radius);margin:2rem 0}.benefits-list li{margin-bottom:.8rem;position:relative;padding-left:1.5rem}.benefits-list li::before{content:'✓';position:absolute;left:0;color:var(--accent-color);font-weight:700}.stats-container{display:flex;justify-content:space-around;flex-wrap:wrap;margin:2rem 0;text-align:center}.stat-item{padding:1.5rem;min-width:150px}.stat-number{font-size:2.5rem;font-weight:700;color:var(--primary-color);margin-bottom:.5rem}.stat-label{color:var(--dark-color);font-size:.9rem;text-transform:uppercase;letter-spacing:1px}@media (max-width:768px){header .container{flex-direction:column;text-align:center;padding:1rem}header nav{margin-top:1rem}header nav a{margin:0 .75rem}.tool-section{padding:1.5rem;margin:1rem}.feature-card{flex-direction:column}.feature-image{min-height:150px}h2{font-size:1.8rem}h3{font-size:1.3rem}}footer{background-color:var(--primary-color);color:var(--white);text-align:center;padding:1.5rem 0;margin-top:2rem}footer p{margin:0;font-size:.9rem}.back-to-top{position:fixed;bottom:2rem;right:2rem;background-color:var(--primary-color);color:var(--white);width:3rem;height:3rem;border-radius:50%;display:flex;justify-content:center;align-items:center;text-decoration:none;box-shadow:var(--box-shadow);opacity:0;transition:var(--transition);z-index:99}.back-to-top.visible{opacity:1}.back-to-top:hover{background-color:var(--secondary-color);transform:translateY(-3px)}