:root{--font-family: "Inter", system-ui, Avenir, Helvetica, Arial, sans-serif;--color-bg: #F3F4F6;--color-surface: #FFFFFF;--color-text-primary: #1F2937;--color-text-secondary: #6B7280;--color-border: #E5E7EB;--color-primary: #111827;--color-primary-hover: #374151}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--color-bg);color:var(--color-text-primary);display:flex;justify-content:center;min-height:100vh;padding:2rem}#root{width:100%;max-width:800px}.card{background:var(--color-surface);border-radius:8px;padding:2rem;box-shadow:0 1px 3px #0000001a;margin-bottom:1.5rem}.input-group{margin-bottom:1.5rem}.label{display:block;font-weight:600;margin-bottom:.5rem;font-size:.875rem}.description{font-size:.875rem;color:var(--color-text-secondary);margin-bottom:1.5rem}.form-control{width:100%;padding:.75rem;border:1px solid var(--color-border);border-radius:6px;font-size:.95rem;background-color:#f9fafb;transition:border-color .2s}.form-control:focus{outline:none;border-color:var(--color-primary);background-color:#fff}.btn-primary{width:100%;padding:.75rem;background-color:var(--color-primary);color:#fff;border:none;border-radius:6px;font-weight:600;cursor:pointer;transition:background-color .2s;font-size:1rem}.btn-primary:hover{background-color:var(--color-primary-hover)}.pre-block{background-color:#f3f4f6;padding:1rem;border-radius:6px;font-family:monospace;font-size:.85rem;overflow-x:auto;white-space:pre-wrap;color:#374151}.section-title{font-size:1.25rem;font-weight:700;margin-bottom:.5rem}