html,body{margin:0;padding:0;font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:#2d3748;background-color:#f7fafc}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.site-header{background:linear-gradient(135deg,#2b6cb0 0%,#4299e1 100%);color:white;padding:40px 0;text-align:center;margin-bottom:40px}
.site-header h1{font-size:3.5rem;font-weight:700;margin:0 0 20px;letter-spacing:-0.5px}
.subtitle{font-size:1.25rem;max-width:800px;margin:0 auto;opacity:0.9}
.logo-container{margin-bottom:20px}
img{max-width:100%}
.site-logo{height:auto;display:block;margin:0 auto}
.tool-card{background:white;border-radius:12px;box-shadow:0 4px 6px rgba(0,0,0,0.05);margin-bottom:30px;overflow:hidden;transition:transform 0.2s ease,box-shadow 0.2s ease}
.tool-card:hover{transform:translateY(-4px);box-shadow:0 8px 12px rgba(0,0,0,0.1)}
.tool-card h2{font-size:1.75rem;color:#2d3748;margin:0;padding:25px 30px;border-bottom:1px solid #edf2f7}
.tool-content{padding:30px;display:grid;grid-template-columns:300px 1fr;gap:30px;align-items:start;text-decoration:none;color:inherit;transition:background-color 0.2s ease}
.tool-content:hover{background-color:#f8fafc}
.tool-content:hover .tool-image{transform:scale(1.02)}
.tool-content p{margin:0;font-size:1.1rem;line-height:1.7;color:#4a5568}
.tool-image{display:block;border-radius:8px;overflow:hidden;transition:transform 0.2s ease}
.tool-image img{width:100%;height:auto;display:block;border:none}
.site-footer{background:#2d3748;color:#a0aec0;padding:30px 0;margin-top:60px;text-align:center}
.content-section{background:white;border-radius:12px;box-shadow:0 4px 6px rgba(0,0,0,0.05);padding:40px;margin-bottom:30px}
.content-section h2{color:#2d3748;font-size:1.5rem;margin:30px 0 15px}
.content-section h2:first-child{margin-top:0}
.content-section p{margin-bottom:20px;color:#4a5568;line-height:1.7}
.content-section ul{margin:0 0 20px 20px;color:#4a5568}
.content-section li{margin-bottom:10px;line-height:1.6}
.footer-nav{margin-top:15px}
.footer-nav a{color:#a0aec0;text-decoration:none;margin:0 15px;transition:color 0.2s ease}
.footer-nav a:hover{color:white}
@media (max-width:768px){.site-logo{width:100px}
.site-header{padding:30px 0}
.site-header h1{font-size:2.5rem}
.tool-content{grid-template-columns:1fr;padding:20px}
.tool-image{max-width:400px;margin:0 auto}
.content-section{padding:30px 20px}
.content-section h2{font-size:1.3rem}
}
@media (max-width:480px){.site-logo{width:80px}
.site-header{padding:25px 0}
.site-header h1{font-size:2rem}
.subtitle{font-size:1.1rem}
.tool-card h2{font-size:1.5rem;padding:20px}
.tool-content{padding:15px}
.content-section{padding:20px 15px}
.footer-nav a{margin:0 10px;font-size:0.9rem}
}
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}
to{opacity:1;transform:translateY(0)}
}
.tool-card{animation:fadeIn 0.6s ease-out forwards}
.scroll-to-top{position:fixed;bottom:30px;right:30px;width:50px;height:50px;border-radius:50%;background:#2b6cb0;color:white;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(20px);transition:all 0.3s ease;box-shadow:0 4px 12px rgba(0,0,0,0.15);z-index:1000}
.scroll-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.scroll-to-top:hover{background:#2c5282;transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,0.2)}
.scroll-to-top:active{transform:translateY(0)}
.scroll-progress{position:fixed;top:0;left:0;width:0;height:3px;background:linear-gradient(to right,#2b6cb0,#4299e1);z-index:1001;transition:width 0.1s ease}
@media (max-width:768px){.scroll-to-top{bottom:20px;right:20px;width:40px;height:40px}
}
@media (max-width:480px){.scroll-to-top{bottom:15px;right:15px;width:35px;height:35px}
}