:root{--primary:#2563eb;--primary-dark:#1d4ed8;--bg:#ffffff;--bg-alt:#f8fafc;--text:#0f172a;--text-muted:#64748b;--border:#e2e8f0}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;color:var(--text);background:var(--bg)}.container{max-width:1200px;margin:0 auto;padding:0 24px}header{border-bottom:1px solid var(--border);padding:16px 0;position:sticky;top:0;background:white;z-index:100}header .container{display:flex;justify-content:space-between;align-items:center}.logo{font-size:24px;font-weight:700;color:var(--primary)}.logo,nav a{text-decoration:none}nav a{margin-left:32px;color:var(--text-muted);font-weight:500}nav a:hover{color:var(--primary)}.btn{display:inline-block;padding:12px 24px;background:var(--primary);color:white;text-decoration:none;border-radius:8px;font-weight:600;border:none;cursor:pointer;font-size:16px;transition:background .15s}.btn:hover{background:var(--primary-dark)}.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary)}.btn-outline:hover{background:var(--primary);color:white}footer{border-top:1px solid var(--border);padding:48px 0;margin-top:80px;color:var(--text-muted);text-align:center}main{min-height:60vh}@media (max-width:768px){nav{display:none}.logo{font-size:20px}}