:root{--primary-color:#0d6efd;--bg-color:#f8f9fa;--text-color:#212529;--card-bg:#fff}body{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;background-color:var(--bg-color);color:var(--text-color);margin:0;padding:0;line-height:1.6}header{background-color:var(--card-bg);box-shadow:0 2px 4px rgba(0,0,0,.1);padding:1rem 0;text-align:center}.logo{font-size:1.5rem;font-weight:700;color:var(--primary-color);text-decoration:none}.container{max-width:1100px;margin:0 auto;padding:2rem 1rem}.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-top:2rem}.tool-card{background:var(--card-bg);padding:1.5rem;border-radius:8px;box-shadow:0 2px 5px rgba(0,0,0,.05);transition:transform .2s;text-align:center;border:1px solid #e9ecef}.tool-card:hover{transform:translateY(-5px);border-color:var(--primary-color)}.tool-card h3{margin-top:0}.tool-card p{font-size:.9rem;color:#6c757d}body{color:#1a202c}input,select,textarea{color:#1f2937;border-color:#d1d5db}input::placeholder{color:#6b7280}input:focus,select:focus,textarea:focus{border-color:#0d6efd;box-shadow:0 0 0 3px rgba(13,110,253,.1)}a{color:#0d6efd}a:visited{color:#0a58ca}.btn{display:inline-block;padding:.5rem 1rem;background-color:var(--primary-color);color:#fff!important;text-decoration:none;border-radius:4px;margin-top:1rem;font-size:.9rem}.btn-outline,.btn[style*="background: white"],.btn[style*="background:white"],.btn[style*="background: transparent"]{background:#fff!important;color:#0d6efd!important;border:2px solid #0d6efd}.calc-box{background:#fff;padding:2rem;border-radius:8px;max-width:500px;margin:0 auto;box-shadow:0 4px 6px rgba(0,0,0,.1)}input,select{width:100%;padding:10px;margin:10px 0;border:1px solid #ced4da;border-radius:4px;box-sizing:border-box}.result-box{margin-top:20px;padding:15px;background-color:#e2e3e5;border-radius:4px;font-weight:700;text-align:center;display:none}.site-footer{background-color:#212529;color:#adb5bd;padding:3rem 0 1rem;margin-top:4rem;font-size:.9rem}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-bottom:2rem}.footer-section h4{color:#fff;margin-top:0;margin-bottom:1rem;font-size:1.1rem;border-bottom:2px solid #0d6efd;display:inline-block;padding-bottom:5px}.footer-section ul{list-style:none;padding:0}.footer-section ul li{margin-bottom:.5rem}.footer-section a{color:#adb5bd;text-decoration:none;transition:color .2s}.footer-section a:hover{color:#fff;padding-left:5px}.footer-bottom{text-align:center;border-top:1px solid #343a40;padding-top:1.5rem;margin-top:1rem}.social-icons{margin-top:1rem}