.engineering-note{max-width:1200px;margin:1.25rem auto;padding:1rem 16px;border:1px solid var(--color-border,#d8dee8);border-radius:8px;background:var(--color-bg-card,#f7f9fc);color:var(--color-text-secondary,#4A5568);line-height:1.55}.engineering-note strong{color:var(--color-text-primary,#1a202c)}@media(max-width:600px){.engineering-note{font-size:.95rem}}