/* ==========================================================================
   NEXIRA CONSULTING: ABOUT NEXIRA & FOUNDER (Stage 09D)
   Page-specific styles for about.html only. Every selector is ab- prefixed or
   scoped to .page-about. Reuses .sd-hero / .sd-crumbs (service-detail.css) and
   .closing (nexira.css) read-only. Stage 07E rule: no decorative short rules.
   ========================================================================== */

/* Shared section label (an H2 styled as a small label) */
.ab-k { margin: 0 0 var(--s-4); font-family: var(--sans); font-size: var(--fs-xs); font-weight: 600; letter-spacing: 0.2em; line-height: 1.4; text-transform: uppercase; color: var(--gold-text); }
.ab-n { display: block; margin-bottom: 0.7rem; font-family: var(--serif); font-size: 1.2rem; line-height: 1; color: var(--gold-text); }

/* 01 HERO: concise, no image */
.page-about .ab-hero { padding-block: clamp(2.75rem, 1.5rem + 4vw, 5.5rem); }
.page-about .ab-hero .sd-crumbs { margin-bottom: var(--s-6); }
.page-about .ab-hero h1 { font-size: clamp(2.3rem, 1.5rem + 3.2vw, 4.2rem); max-width: 31ch; margin: var(--s-4) 0 var(--s-5); }
.page-about .ab-hero h1 em { display: block; color: var(--gold-soft); }
.ab-hero__lede { max-width: 44rem; margin: 0; }

/* 02 WHY NEXIRA EXISTS (ivory, editorial) */
.ab-why { background: var(--ivory); padding-block: clamp(3.5rem, 2rem + 5vw, 7rem); }
.ab-why__grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 1rem + 4vw, 5rem); align-items: start; }
.ab-why__lead { margin: 0; font-family: var(--serif); font-size: clamp(1.8rem, 1.3rem + 1.8vw, 2.9rem); line-height: 1.15; color: var(--ink); max-width: 14ch; }
.ab-why__body p { margin: 0 0 var(--s-5); font-size: var(--fs-md); line-height: 1.65; color: var(--text); max-width: 40rem; }
.ab-why__body .ab-why__purpose { margin: 0; font-family: var(--serif); font-size: clamp(1.2rem, 1.05rem + 0.6vw, 1.5rem); line-height: 1.5; color: var(--ink); }

/* 03 WHAT GUIDES OUR WORK (paper, three typographic columns) */
.ab-guides { background: var(--paper); padding-block: clamp(3rem, 2rem + 4vw, 6rem); }
.ab-guides__list { list-style: none; margin: var(--s-4) 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 0.5rem + 3vw, 4rem); }
.ab-guides__list h3 { margin: 0 0 var(--s-3); font-size: clamp(1.35rem, 1.15rem + 0.7vw, 1.7rem); line-height: 1.2; }
.ab-guides__list p { margin: 0; color: var(--text-muted); line-height: 1.6; max-width: 26rem; }

/* 04 FOUNDER (ivory; portrait about 5/12, copy about 7/12) */
.ab-founder { background: var(--ivory); padding-block: clamp(3.5rem, 2rem + 5vw, 7rem); }
.ab-founder__grid {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  grid-template-areas: "photo head" "photo body";
  grid-template-rows: auto 1fr;
  column-gap: clamp(2rem, 1rem + 4vw, 5rem);
}
.ab-founder__head { grid-area: head; }
.ab-founder__head h2 { font-size: var(--fs-2xl); margin: 0 0 var(--s-5); }
.ab-founder__photo { grid-area: photo; margin: 0; aspect-ratio: 4 / 5; overflow: hidden; background: var(--ivory-2); align-self: start; }
.ab-founder__photo img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: 50% 18%; }
.ab-founder__body { grid-area: body; }
.ab-founder__body p { margin: 0 0 var(--s-4); line-height: 1.7; max-width: 40rem; }
.ab-founder__body .ab-founder__lead { font-family: var(--serif); font-size: var(--fs-md); line-height: 1.55; color: var(--ink); }


/* 05 EXPERIENCE BEHIND NEXIRA: career progression (paper; sticky head beside a ruled list) */
.ab-prog { background: var(--paper); padding-block: clamp(3.5rem, 2rem + 5vw, 7rem); }
.ab-prog__grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); column-gap: clamp(2rem, 1rem + 4vw, 5rem); row-gap: var(--s-5); align-items: start; }
.ab-prog__head { position: sticky; top: calc(var(--header-h) + var(--s-6)); }
.ab-prog__head h2 { font-size: var(--fs-xl); line-height: 1.15; margin: 0 0 var(--s-5); max-width: 14ch; }
.ab-prog__intro { margin: 0; color: var(--text-muted); line-height: 1.65; max-width: 26rem; }
.ab-prog__list { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--line-strong); }
.ab-prog__list > li { display: grid; grid-template-columns: 3.25rem minmax(0, 1fr); gap: var(--s-4); padding-block: var(--s-6); border-top: 1px solid var(--line-strong); }
.ab-prog__n { font-family: var(--serif); font-size: 1.45rem; line-height: 1.1; color: var(--gold-text); }
.ab-prog__meta { margin: 0 0 var(--s-2); font-size: var(--fs-xs); font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-muted); }
.ab-prog__list h3 { margin: 0 0 var(--s-3); font-size: clamp(1.3rem, 1.1rem + 0.6vw, 1.6rem); line-height: 1.2; }
.ab-prog__list p:not(.ab-prog__meta) { margin: 0; line-height: 1.7; max-width: 42rem; }
.ab-prog__list > li:last-child h3 { color: var(--gold-text); }
.ab-prog__note { grid-column: 2; margin: 0; font-size: 0.86rem; line-height: 1.55; color: var(--text-muted); max-width: 42rem; }

/* 06 WHAT THIS MEANS IN PRACTICE (deeper ivory, to separate it from the paper progression; four typographic columns over a structural line) */
.ab-means { background: var(--ivory-2); padding-block: clamp(3.5rem, 2rem + 5vw, 7rem); }
.ab-means__head { margin-bottom: var(--s-6); }
.ab-means__head h2 { font-size: var(--fs-2xl); margin: 0; max-width: 20ch; }
.ab-means__list { list-style: none; margin: 0; padding: var(--s-6) 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(1.5rem, 0.5rem + 2.5vw, 3rem); border-top: 1px solid var(--line-strong); }
.ab-means__list h3 { margin: 0 0 var(--s-3); font-size: clamp(1.2rem, 1.05rem + 0.5vw, 1.45rem); line-height: 1.2; }
.ab-means__list p { margin: 0; color: var(--text-muted); line-height: 1.65; }
.ab-means__foot { margin-top: var(--s-7); padding-top: var(--s-5); border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: var(--s-4) var(--s-6); }
.ab-principle { margin: 0; font-family: var(--serif); font-size: clamp(1.15rem, 0.9rem + 0.8vw, 1.6rem); line-height: 1.35; color: var(--ink); }
.ab-principle__ne { margin: 0 0.3em; color: var(--gold-text); }
.ab-means__link { margin: 0; }

/* 06 HOW NEXIRA WORKS (charcoal, typography-led) */
.ab-works { background: var(--ink); color: var(--on-dark); padding-block: clamp(3.5rem, 2rem + 5vw, 7rem); }
.ab-works .ab-k { color: var(--gold-soft); }
.ab-works__head { max-width: 48rem; margin-bottom: var(--s-7); }
.ab-works__head h2 { font-size: var(--fs-2xl); margin: 0 0 var(--s-4); color: var(--on-dark); }
.ab-works__intro { margin: 0; font-family: var(--serif); font-size: var(--fs-md); line-height: 1.55; color: var(--on-dark); }
.ab-works__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.55fr) minmax(0, 1fr); gap: clamp(1.5rem, 0.5rem + 3vw, 4rem); padding-top: var(--s-6); border-top: 1px solid var(--line-dark-2); }
.ab-works__item h3 { margin: 0 0 var(--s-4); font-family: var(--sans); font-size: var(--fs-xs); font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold-soft); }
.ab-works__item p { margin: 0 0 var(--s-3); color: var(--on-dark-muted); line-height: 1.65; }
.ab-method { list-style: none; margin: 0 0 var(--s-4); padding: 0; display: flex; flex-wrap: wrap; gap: 0.2rem 0; font-family: var(--serif); font-size: clamp(1.1rem, 0.7rem + 0.55vw, 1.3rem); line-height: 1.35; color: var(--on-dark); }
.ab-method li { white-space: nowrap; }
.ab-method li:not(:last-child)::after { content: "\00B7"; margin: 0 0.45rem; color: var(--gold-soft); }
.ab-works__link { margin-top: var(--s-2); }
.ab-works .link-arrow { color: var(--on-dark); }
.ab-works__boundaries { margin-top: var(--s-7); padding-top: var(--s-5); border-top: 1px solid var(--line-dark); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-6); }
.ab-works__boundaries p { margin: 0; font-size: 0.92rem; line-height: 1.6; color: var(--on-dark-muted); max-width: 34rem; }

/* 07 CLOSING (light variant of .closing, between the dark works band and the dark footer) */
.ab-closing--light { background: var(--ivory); color: var(--text); padding-block: clamp(3.5rem, 2rem + 4vw, 6rem); }
.ab-closing--light h2 { color: var(--ink); max-width: 14ch; }
.ab-closing--light p:not(.eyebrow) { color: var(--text-muted); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 960px) {
  .ab-why__grid { grid-template-columns: 1fr; gap: var(--s-5); }
  .ab-why__lead { max-width: 20ch; }
  .ab-guides__list { grid-template-columns: 1fr; gap: var(--s-6); }
  .ab-founder__grid { grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); }
  .ab-works__grid { grid-template-columns: 1fr; gap: var(--s-6); }
  .ab-prog__grid { grid-template-columns: 1fr; gap: var(--s-6); }
  .ab-prog__head { position: static; }
  .ab-prog__note { grid-column: 1; }
  .ab-prog__head h2 { max-width: 22ch; }
  .ab-prog__intro { max-width: 40rem; }
  .ab-means__list { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: var(--s-6); }
  .ab-works__boundaries { grid-template-columns: 1fr; gap: var(--s-3); }
}
@media (max-width: 640px) {
  /* Mobile reading order: label + name, portrait, narrative */
  .ab-founder__grid { grid-template-columns: 1fr; grid-template-areas: "head" "photo" "body"; grid-template-rows: auto; }
  .ab-founder__photo { width: min(100%, 250px); aspect-ratio: 4 / 5; margin-bottom: var(--s-5); }
  .ab-founder__head h2 { margin-bottom: var(--s-4); }
  .ab-method { font-size: 0.98rem; }
  .ab-method li:not(:last-child)::after { margin: 0 0.3rem; }
  .ab-prog__list > li { grid-template-columns: 1fr; gap: var(--s-2); padding-block: var(--s-5); }
  .ab-prog__n { font-size: 1.15rem; }
  .ab-prog__list h3 { margin-bottom: var(--s-2); }
  .ab-prog__list p:not(.ab-prog__meta) { line-height: 1.65; }
  .ab-means__list { grid-template-columns: 1fr; row-gap: var(--s-5); }
  .ab-principle { font-size: 1.05rem; }
  .ab-principle__ne { margin: 0 0.2em; }
}