*{margin:0;padding:0;box-sizing:border-box}:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-secondary: #475569;--color-success: #059669;--color-ok: #059669;--color-error: #dc2626;--color-background: #ffffff;--color-surface: #f8fafc;--color-text: #1e293b;--color-text-secondary: #475569;--color-border: #e2e8f0;--color-focus: #2563eb;--color-error-bg: #fee2e2;--color-error-border: #fca5a5;--color-success-bg: #d1fae5;--color-success-border: #6ee7b7;--color-info-bg: #dbeafe;--color-info-border: #93c5fd;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--border-radius: .5rem;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--color-background);color:var(--color-text);line-height:1.5}#root{min-height:100vh;display:flex;flex-direction:column}button{font-family:inherit;cursor:pointer;border:none;border-radius:var(--border-radius);padding:var(--spacing-sm) var(--spacing-md);font-size:1rem;font-weight:500;transition:all .2s}button:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}input{font-family:inherit;border:1px solid var(--color-border);border-radius:var(--border-radius);padding:var(--spacing-sm) var(--spacing-md);font-size:1rem;transition:border-color .2s}input:focus{outline:none;border-color:var(--color-focus)}input:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}main{max-width:600px;margin:0 auto;padding:var(--spacing-xl)}h1{font-size:2rem;font-weight:700;margin-bottom:var(--spacing-lg)}h2{font-size:1.5rem;font-weight:600;margin-top:var(--spacing-xl);margin-bottom:var(--spacing-md)}section{margin-top:var(--spacing-xl);padding:var(--spacing-lg);background-color:var(--color-surface);border-radius:var(--border-radius);box-shadow:var(--shadow-sm)}ul[role=list]{list-style:none}li{margin-bottom:var(--spacing-md)}label{display:flex;align-items:center;gap:var(--spacing-md);cursor:pointer}input[type=checkbox]{width:1.25rem;height:1.25rem;cursor:pointer}button[type=submit]{background-color:var(--color-primary);color:#fff;padding:var(--spacing-md) var(--spacing-xl);font-size:1rem;font-weight:600;width:100%}button[type=submit]:hover:not(:disabled){background-color:var(--color-primary-hover)}button[type=submit]:disabled{opacity:.6;cursor:not-allowed;background-color:var(--color-secondary);color:var(--color-background)}button:disabled:not([type=submit]){opacity:.6;cursor:not-allowed;background-color:var(--color-surface);color:var(--color-text-secondary);border:1px solid var(--color-border)}p{margin-bottom:var(--spacing-md);color:var(--color-text-secondary);font-size:.875rem;word-break:break-all}p.hint{font-size:.8125rem;margin-top:var(--spacing-xs)}@media (prefers-color-scheme: dark){:root{--color-background: #0f172a;--color-surface: #1e293b;--color-text: #f1f5f9;--color-text-secondary: #cbd5e1;--color-border: #334155;--color-error-bg: #7f1d1d;--color-error-border: #991b1b;--color-success-bg: #064e3b;--color-success-border: #065f46;--color-info-bg: #1e3a8a;--color-info-border: #1e40af}}