:root{--bg: #0f172a;--surface: #1e293b;--surface-2: #334155;--text: #f8fafc;--muted: #94a3b8;--accent: #38bdf8;--added: #22c55e;--warn: #f59e0b;--error: #ef4444;--radius: 14px;--tabbar-h: 64px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}.app{display:flex;flex-direction:column;min-height:100%}.app__main{flex:1;padding:16px 16px calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 16px);max-width:640px;margin:0 auto;width:100%}h1{font-size:1.4rem;margin:8px 0 16px}h2{font-size:1rem;margin:16px 0 8px;color:var(--muted)}.muted{color:var(--muted)}.btn{min-height:48px;padding:0 18px;border:none;border-radius:var(--radius);background:var(--accent);color:#04233a;font-weight:700;font-size:1rem}.btn--ghost{background:transparent;color:var(--text);border:1px solid var(--surface-2)}.scan__camera{position:relative;aspect-ratio:3 / 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