*{margin:0;padding:0;box-sizing:border-box}:root{--font-mono:"SF Mono","Fira Code","Cascadia Code","JetBrains Mono","Consolas",monospace;--font-sans:system-ui,-apple-system,"Segoe UI",sans-serif;--bg:#0a0a0f;--surface:#12121a;--surface2:#1a1a26;--border:#2a2a3a;--accent:#00e5ff;--accent-dim:rgba(0,229,255,.12);--accent-glow:rgba(0,229,255,.25);--text:#e0e0e8;--text-dim:#6a6a80;--danger:#ff3860}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);min-height:100vh;display:flex;justify-content:center;padding:40px 16px}#app{width:100%;max-width:520px}#app:before{content:"";position:fixed;inset:0;background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,0,0,.03) 2px,rgba(0,0,0,.03) 4px);pointer-events:none;z-index:999}h1{font-family:var(--font-mono);font-size:28px;font-weight:700;letter-spacing:4px;text-transform:uppercase;color:var(--accent);text-shadow:0 0 20px var(--accent-glow);margin-bottom:32px;padding-bottom:16px;border-bottom:1px solid 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