*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--tg-theme-bg-color, #fff);color:var(--tg-theme-text-color, #111)}.app{padding:16px;max-width:480px;margin:0 auto}.app.initializing h1,.app.initializing .subtitle,.app.initializing .tabs,.app.initializing .panel,.app.initializing .error,.app.initializing .success{display:none}h1{font-size:1.25rem;margin:0 0 8px}.subtitle{color:var(--tg-theme-hint-color, #666);font-size:.9rem;margin-bottom:16px}.tabs{display:flex;gap:8px;margin-bottom:16px}.tab{flex:1;padding:10px;border:none;border-radius:10px;background:var(--tg-theme-secondary-bg-color, #f0f0f0);color:inherit;cursor:pointer}.tab.active{background:var(--tg-theme-button-color, #2481cc);color:var(--tg-theme-button-text-color, #fff)}.panel{display:flex;flex-direction:column;gap:12px}input{width:100%;padding:12px;border-radius:10px;border:1px solid var(--tg-theme-hint-color, #ccc);font-size:1rem;background:var(--tg-theme-bg-color, #fff);color:inherit}button.primary{padding:12px 16px;border:none;border-radius:10px;background:var(--tg-theme-button-color, #2481cc);color:var(--tg-theme-button-text-color, #fff);font-size:1rem;cursor:pointer}button.primary:disabled{opacity:.6;cursor:not-allowed}.qr-box{display:flex;flex-direction:column;align-items:center;gap:12px}.qr-box img{width:220px;height:220px;border-radius:12px}.hint{font-size:.85rem;color:var(--tg-theme-hint-color, #666);line-height:1.4}.error{color:#c0392b;font-size:.9rem}.success{color:#1e8449;font-size:.95rem}