: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}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{color-scheme:dark}body{margin:0;background:#1f1f1f;color:#eaeaea}.container{max-width:860px;margin:40px auto;padding:0 16px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.header{margin-bottom:16px}.header h1{margin:0 0 8px;color:#f2f2f2}.header .muted{color:#b9b9b9}.card{border:1px solid #ddd;border-radius:12px;padding:16px;margin:12px 0;background:#fff;color:#111}.card h2{margin:0 0 12px;color:#111}.grid{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr))}@media(max-width:720px){.grid{grid-template-columns:1fr}}label{display:flex;flex-direction:column;gap:6px;font-weight:700;color:#111}input,select,button{padding:10px 12px;border-radius:10px;border:1px solid #ccc;font-weight:500;background:#fff;color:#111}button{cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}button.secondary{background:#f3f3f3}.muted{color:#555}.small{font-size:12px;font-weight:500}.card.error{border-color:#ffb3b3;background:#fff6f6}.card.success{border-color:#b9f2c5;background:#f5fff7}.row{display:flex;align-items:center;gap:10px;margin-top:8px}code{background:#f3f3f3;padding:2px 6px;border-radius:8px;color:#111}