:root{--bg-body:#f5f5f7;--bg-card:#fff;--bg-surface:#fff;--text-primary:#1d1d1f;--text-secondary:#86868b;--text-inverted:#fff;--accent:#0071e3;--accent-hover:#0077ed;--radius:1.5rem;--shadow-soft:0 4px 20px #0000000d;--shadow-strong:0 20px 40px #0000001a;--font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--container-width:1080px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg-body);color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;line-height:1.5}a{color:inherit;text-decoration:none}.container{max-width:var(--container-width);margin:0 auto;padding:0 2rem}h1{letter-spacing:-.02em;color:var(--text-primary);margin-bottom:1.5rem;font-size:3.5rem;font-weight:700;line-height:1.1}h2{letter-spacing:-.01em;color:var(--text-primary);margin-bottom:1rem;font-size:2.5rem;font-weight:600}h3{margin-bottom:.5rem;font-size:1.5rem;font-weight:600}p{color:var(--text-secondary);font-size:1.05rem}.text-gradient-blue{color:var(--accent)}.section-sub{max-width:600px;color:var(--text-secondary);margin:0 auto;font-size:1.25rem}.header-center{text-align:center;margin-bottom:4rem}.section{padding:6rem 0}.no-padding-bottom{padding-bottom:0}.bg-light-gray{background:#fff}.bg-black{color:#fff;background:#000}.btn{cursor:pointer;border-radius:2rem;justify-content:center;align-items:center;padding:.8rem 2rem;font-size:1rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);transform:scale(1.02)}.btn-text{color:var(--accent);background:0 0;padding:.8rem 1rem}.btn-text:hover{text-decoration:underline}.shadow-strong{box-shadow:var(--shadow-strong)}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#ccc;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#999}