:root{--primary-color: #007bff;--text-color: #333;--bg-color: #ffffff;--light-gray: #f8f9fa;--border-color: #dee2e6;--container-width: 1100px;--border-radius: 6px}*{margin:0;padding:0;box-sizing:border-box}html{font-size:62.5%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:1.6rem;line-height:1.6;color:var(--text-color);background-color:var(--bg-color);display:flex;flex-direction:column;min-height:100vh}.container{max-width:var(--container-width);margin:0 auto;padding:0 2rem}main{flex-grow:1;padding:4rem 0}.grid{display:grid;gap:4rem;align-items:center}.grid-two-cols{grid-template-columns:1fr 1fr}h1,h2,h3{margin-bottom:1.5rem;font-weight:600;line-height:1.2}h1{font-size:3.6rem}h2{font-size:2.8rem}h3{font-size:2.2rem}p{margin-bottom:1rem}a{color:var(--primary-color);text-decoration:none}a:hover{text-decoration:underline}header{background-color:var(--light-gray);border-bottom:1px solid var(--border-color);padding:2rem 0;width:100%}header .container{display:flex;justify-content:space-between;align-items:center}.logo-brand a{font-size:2.4rem;font-weight:700;color:var(--text-color)}.logo-brand a:hover{text-decoration:none}nav ul{display:flex;list-style:none;gap:2.5rem}nav a{font-size:1.6rem;font-weight:500;color:var(--text-color);transition:color .2s ease}nav a:hover,nav a.active{color:var(--primary-color);text-decoration:none}form{display:flex;flex-direction:column;gap:2rem;width:100%;max-width:500px;margin:0 auto}form div{display:flex;flex-direction:column}label{margin-bottom:.5rem;font-weight:500}input[type=text],input[type=email],input[type=password],input[type=number],textarea{width:100%;padding:1rem;border:1px solid var(--border-color);border-radius:var(--border-radius);font-size:1.6rem}input:focus,textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px #007bff40}textarea{resize:vertical;min-height:120px}.btn,button[type=submit]{display:inline-block;padding:1rem 2rem;font-size:1.6rem;font-weight:500;text-align:center;color:#fff;background-color:var(--primary-color);border:none;border-radius:var(--border-radius);cursor:pointer;transition:background-color .2s ease}.btn:hover,button[type=submit]:hover{background-color:#0056b3;color:#fff;text-decoration:none}.btn-group{display:flex;gap:1rem;margin-top:1rem}img{max-width:100%;height:auto;border-radius:var(--border-radius)}footer{background-color:var(--light-gray);border-top:1px solid var(--border-color);text-align:center;padding:2rem 0;margin-top:auto}@media (max-width: 768px){.grid-two-cols{grid-template-columns:1fr;text-align:center}header .container{flex-direction:column;gap:1.5rem}nav ul{flex-wrap:wrap;justify-content:center}h1{font-size:3rem}}.content-center{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;text-align:center}.section-analytics{margin:40px auto;padding:32px 0;background:#f8fafc;border-radius:12px;box-shadow:0 2px 8px #0000000f}.section-analytics .container{max-width:900px;margin:0 auto}.grid-four-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}.div1{background:#fff;border-radius:10px;box-shadow:0 1px 6px #00000012;padding:28px 16px;text-align:center;transition:box-shadow .2s;min-height:160px;display:flex;flex-direction:column;justify-content:center;align-items:center}.div1:hover{box-shadow:0 4px 16px #2524241f}.div1 h2{font-size:2.2rem;color:#007bff;margin-bottom:10px;font-weight:700}.div1 p{font-size:1.1rem;color:#333;margin:0}.footer{background:#222;color:#fff;padding:24px 0;text-align:center;margin-top:40px}.footer-container{max-width:900px;margin:0 auto}.footer-links{margin:12px 0}.footer-links a{color:#fff;margin:0 12px;text-decoration:none;font-weight:500;transition:color .2s}.footer-links a:hover{color:#007bff}