*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.6;color:#e5e7eb;background:#0a0a0a}.container{max-width:1280px;margin:0 auto;padding:0 24px}.app-header{background:hsla(0,0%,4%,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(59,130,246,.2);padding:16px 0;position:-webkit-sticky;position:sticky;top:0;z-index:100}.app-header .container{display:flex;justify-content:space-between;align-items:center}.logo{text-decoration:none;color:#fff}.logo h1{font-size:24px;font-weight:700}nav{display:flex;gap:24px}nav a{text-decoration:none;color:#9ca3af;font-weight:500;transition:color .2s}nav a:hover{color:#60a5fa}.app-main{min-height:calc(100vh - 200px);padding:40px 0}.app-footer{background:#000;border-top:1px solid rgba(59,130,246,.2);padding:32px 0;margin-top:60px;text-align:center}.app-footer p{color:#9ca3af;font-size:14px;margin:4px 0}.tagline{font-size:12px;color:#6b7280}@media (max-width:768px){.app-header .container{flex-direction:column;gap:16px}nav{gap:16px}}