*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #2563eb;--secondary: #1e40af;--accent: #f59e0b;--bg-light: #f8fafc;--bg-white: #ffffff;--text-primary: #1e293b;--text-secondary: #64748b;--shadow: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--radius: 8px;--radius-lg: 16px;--transition: .3s ease}html{scroll-behavior:smooth}body{font-family:Open Sans,sans-serif;color:var(--text-primary);line-height:1.6;background-color:var(--bg-white)}h1,h2,h3,h4,h5,h6{font-family:Montserrat,sans-serif;font-weight:700;line-height:1.2}a{text-decoration:none;color:inherit;transition:var(--transition)}ul{list-style:none}img{max-width:100%;height:auto}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.container{max-width:1200px;margin:0 auto;padding:0 20px}.btn{display:inline-block;padding:12px 28px;background-color:var(--primary);color:var(--bg-white);border-radius:var(--radius);font-weight:600;font-family:Montserrat,sans-serif;cursor:pointer;transition:var(--transition);border:none}.btn:hover{background-color:var(--secondary);transform:translateY(-2px);box-shadow:var(--shadow)}.btn-outline{background-color:transparent;border:2px solid var(--primary);color:var(--primary)}.btn-outline:hover{background-color:var(--primary);color:var(--bg-white)}.section-title{font-size:2.5rem;text-align:center;margin-bottom:1rem;color:var(--text-primary)}.section-subtitle{text-align:center;color:var(--text-secondary);font-size:1.1rem;margin-bottom:3rem;max-width:600px;margin-left:auto;margin-right:auto}.section{padding:80px 0}.section-light{background-color:var(--bg-light)}@media (max-width: 768px){.section-title{font-size:2rem}.section{padding:60px 0}}