:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--background:#f1f5f9;--foreground:#0f172a;--muted:#64748b;--border:#cbd5e1;--primary:#1d4ed8;--primary-hover:#1e40af;--success-bg:#ecfdf5;--success-border:#86efac;--success-text:#166534;--error-bg:#fef2f2;--error-border:#fca5a5;--error-text:#991b1b}*{box-sizing:border-box}body{background:var(--background);color:var(--foreground);margin:0;font-family:Arial,Helvetica,sans-serif}.page-shell{width:min(980px,100% - 32px);margin:0 auto;padding:40px 0}.page-header{margin-bottom:24px}.eyebrow,.card-eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--primary);margin:0 0 8px;font-size:13px;font-weight:700}h1{margin:0 0 8px;font-size:32px}h2{margin:0;font-size:22px}.page-header p:not(.eyebrow){color:var(--muted);margin:0;line-height:1.5}.cards-stack{gap:20px;display:grid}.validator-card{border:1px solid var(--border);background:#fff;border-radius:12px;gap:18px;padding:20px;display:grid;box-shadow:0 10px 24px #0f172a14}.card-title-row{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.field-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.field-group{gap:8px;display:grid}label{font-size:14px;font-weight:700}input,select,textarea{border:1px solid var(--border);width:100%;color:var(--foreground);font:inherit;background:#fff;border-radius:8px;padding:10px 12px}textarea{resize:vertical;min-height:260px;font-family:Consolas,Monaco,Courier New,monospace;font-size:13px}.hint{color:var(--muted);margin:0;font-size:13px}button{background:var(--primary);color:#fff;cursor:pointer;border:0;border-radius:8px;justify-self:start;padding:10px 16px;font-weight:700}button:hover:not(:disabled){background:var(--primary-hover)}button:disabled{cursor:not-allowed;background:#94a3b8}.result{border:1px solid;border-radius:10px;padding:14px}.result h3{margin:0 0 8px;font-size:18px}.result p{margin:0 0 8px}.result ul{margin:8px 0 0;padding-left:20px}.result li{margin-bottom:6px}.result code{font-family:Consolas,Monaco,Courier New,monospace}.result-ok{background:var(--success-bg);border-color:var(--success-border);color:var(--success-text)}.result-nok{background:var(--error-bg);border-color:var(--error-border);color:var(--error-text)}@media (max-width:720px){.field-grid{grid-template-columns:1fr}}