/* The shared "About Us" letter. External stylesheet only: both CSP policies forbid
 * inline style. Self-contained (own variables, own fonts) because it must look right
 * inside three products with three different stylesheets, none of which we control. */
.about-letter {
  --al-paper: #fffdf8; --al-ink: #2b2620; --al-soft: #6a6157; --al-accent: #2f6f5e;
  --al-rule: #e6dfd0; --al-wash: #f3efe4;
  max-width: 42rem; margin: 2rem auto; padding: 2.5rem 2.25rem 2rem;
  background: var(--al-paper); color: var(--al-ink);
  border: 1px solid var(--al-rule); border-top: 4px solid var(--al-accent);
  border-radius: 6px; box-shadow: 0 2px 14px rgba(40, 30, 10, .08);
  font: 1.08rem/1.75 Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  text-align: left;
}
.about-letter p { margin: 0 0 1.1rem; }
.about-letter a { color: var(--al-accent); text-decoration: underline; text-underline-offset: 2px; }
.about-letter a:focus-visible { outline: 3px solid var(--al-accent); outline-offset: 2px; }
.about-letter__eyebrow {
  margin: 0 0 .25rem; font: 600 .78rem/1.2 system-ui, sans-serif;
  letter-spacing: .12em; text-transform: uppercase; color: var(--al-accent);
}
.about-letter__title { margin: 0 0 1.75rem; font-size: 2rem; line-height: 1.15; font-weight: 700; color: var(--al-ink); }
.about-letter__salutation { font-size: 1.3rem; font-style: italic; margin-bottom: 1.25rem; }
.about-letter__lede { font-size: 1.18rem; color: var(--al-ink); padding-left: 1rem; border-left: 3px solid var(--al-rule); }
.about-letter__heading {
  margin: 2rem 0 .75rem; font: 700 1.25rem/1.3 Georgia, serif; color: var(--al-accent);
}
.about-letter__section {
  margin: 1.75rem 0; padding: 1.25rem 1.4rem .4rem; background: var(--al-wash);
  border-radius: 6px; border: 1px solid var(--al-rule);
}
.about-letter__section .about-letter__heading { margin-top: 0; }
.about-letter ul { margin: 0 0 1.25rem; padding-left: 1.25rem; }
.about-letter li { margin-bottom: .6rem; }
.about-letter__closing { margin-top: 2rem; font-style: italic; margin-bottom: .25rem; }
.about-letter__signature {
  font: italic 700 1.9rem/1.2 "Snell Roundhand", "Segoe Script", "Brush Script MT", cursive;
  color: var(--al-accent); margin-bottom: 1.25rem;
}
.about-letter__postscript { font-size: .95rem; color: var(--al-soft); border-top: 1px solid var(--al-rule); padding-top: 1rem; }
@media (max-width: 600px) {
  .about-letter { margin: 0; border-radius: 0; border-left: 0; border-right: 0; padding: 1.75rem 1.1rem 1.5rem; font-size: 1.02rem; }
  .about-letter__title { font-size: 1.65rem; }
}
@media (prefers-color-scheme: dark) {
  .about-letter { --al-paper: #1f1c18; --al-ink: #efe9dd; --al-soft: #a89f92; --al-accent: #7fc4ae; --al-rule: #3a352d; --al-wash: #292520; box-shadow: none; }
}
@media print { .about-letter { box-shadow: none; border: 0; max-width: none; } }

/* Standalone page chrome, for a product (int_robotsim) whose only stylesheet is inline
 * in its single-page app and so has nothing to borrow. Scoped to the page class. */
body.about-letter-page { margin: 0; background: #ece6d8; font-family: system-ui, sans-serif; }
.about-letter-page__bar { display: flex; justify-content: space-between; align-items: center; padding: .75rem 1.25rem; background: #1f2a2e; }
.about-letter-page__bar a { color: #e8f2ee; text-decoration: none; font-weight: 600; display: inline-flex; gap: .5rem; align-items: center; }
.about-letter-page__bar a:hover, .about-letter-page__bar a:focus-visible { text-decoration: underline; }
.about-letter-page .site-footer { padding: 1rem; text-align: center; color: #5b5348; font-size: .8rem; }
.about-letter-page .int-legal-identity a { color: #2f6f5e; }
.about-letter-page .int-legal-identity .list-inline { display: flex; flex-wrap: wrap; justify-content: center; gap: 0 .9rem; list-style: none; margin: .25rem 0 0; padding: 0; }
@media (prefers-color-scheme: dark) {
  body.about-letter-page { background: #141311; }
  .about-letter-page .site-footer { color: #a89f92; }
  .about-letter-page .int-legal-identity a { color: #7fc4ae; }
}