:root{--navy: #0A1F44;--navy-2: #0F2A5A;--navy-3: #16356E;--ink: #06142E;--red: #E53935;--red-dark: #C62828;--white: #FFFFFF;--muted: #A9B8D6;--line: rgba(255,255,255,.12);--good: #4ADE80;--gold: #FBBF24;--radius: 16px}*{box-sizing:border-box}html,body{margin:0;background:var(--ink);color:var(--white);font-family:Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit}button{font:inherit;color:inherit}.app{min-height:100vh;padding-bottom:calc(76px + env(safe-area-inset-bottom))}.main{max-width:760px;margin:0 auto;padding:0 18px}h1,h2,h3,.display{font-family:Oswald,sans-serif;text-transform:uppercase;letter-spacing:.01em;margin:0}.mono{font-family:JetBrains Mono,monospace}.demo-banner{background:var(--gold);color:#1f1300;font-size:13px;font-weight:700;text-align:center;padding:7px 12px}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 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