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a[data-astro-cid-kut2lg3i]:hover{border-bottom-color:var(--border-strong);color:var(--text-primary)}.nf-sec-principles[data-astro-cid-kut2lg3i],.nf-sec-proofs[data-astro-cid-kut2lg3i]{display:grid;gap:16px;margin:0;padding:0;list-style:none}.nf-sec-principle[data-astro-cid-kut2lg3i],.nf-sec-proof[data-astro-cid-kut2lg3i]{display:grid;gap:8px;padding:20px;border:1px solid var(--border-subtle);border-radius:0;background:var(--bg-surface)}.nf-sec-principle[data-astro-cid-kut2lg3i]{grid-template-columns:36px minmax(0,1fr)}.nf-sec-principle__index[data-astro-cid-kut2lg3i]{grid-row:1 / span 2;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border:1px solid var(--border-strong);border-radius:var(--radius-md);color:var(--text-tertiary);font-size:11px;font-weight:700;font-variant-numeric:tabular-nums}.nf-sec-proof[data-astro-cid-kut2lg3i]{grid-template-columns:28px minmax(0,1fr)}.nf-sec-proof__icon[data-astro-cid-kut2lg3i]{grid-row:1 / span 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