:root{--primary: #3b82f6;--primary-hover: #2563eb;--text-main: #1f2937;--text-muted: #6b7280;--bg-light: #f9fafb;--bg-white: #ffffff;--footer-bg: #111827}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text-main);line-height:1.5;background-color:var(--bg-white)}h1,h2,h3,h4{font-weight:700;color:var(--text-main)}a{text-decoration:none;color:inherit;transition:all .2s ease}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}button{cursor:pointer;border:none;transition:all .2s ease}