:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.card{padding:2em}#app{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{box-sizing:border-box}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.wrap{max-width:720px;margin:40px auto;padding:0 16px}h1{font-size:22px;margin-bottom:16px}.card{border:1px solid #e5e7eb;border-radius:14px;padding:16px;box-shadow:0 4px 16px #0000000a;margin-bottom:20px}button{padding:8px 14px;border-radius:10px;border:1px solid #e5e7eb;cursor:pointer;background:#fff}button:disabled{opacity:.6;cursor:not-allowed}.qr{margin-top:12px}.qr img{width:220px;height:220px;object-fit:contain}.btns{display:flex;gap:10px;margin-top:12px}.tip{color:#6b7280;font-size:12px;margin-top:8px}