:root{--bg-color: #0f172a;--text-color: #f8fafc;--text-secondary: #94a3b8;--accent-color: #38bdf8;--accent-hover: #0ea5e9;--card-bg: #1e293b;--border-color: #334155;--font-main: "Inter", system-ui, Avenir, Helvetica, Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--bg-color);color:var(--text-color);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--accent-color);text-decoration:none;transition:color .3s ease}a:hover{color:var(--accent-hover)}h1,h2,h3,h4,h5,h6{line-height:1.2;margin-bottom:1rem}.container{max-width:1200px;margin:0 auto;padding:0 2rem}section{padding:4rem 0}.btn{display:inline-block;background-color:var(--accent-color);color:#0f172a;padding:.75rem 1.5rem;border-radius:.5rem;font-weight:600;transition:transform .2s ease,background-color .2s ease;border:none;cursor:pointer}.btn:hover{background-color:var(--accent-hover);transform:translateY(-2px)}.grid{display:grid;gap:2rem}@media(min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}}