/* ==========================================================================
   NEXIRA CONSULTING: INSIGHTS HUB (Stage 10-13B)
   Page-specific styles for insights.html only. All selectors in- prefixed.
   Editorial list treatment, not a card grid. Reuses .sd-hero / .sd-crumbs and
   .closing read-only. Stage 07E rule: no decorative short rules.
   ========================================================================== */

.in-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); }
.in-k--dark { color: var(--gold-soft); }
.in-n { display: block; font-family: var(--serif); font-size: 1.2rem; line-height: 1; color: var(--gold-text); }
.in-head { max-width: 48rem; margin-bottom: var(--s-6); }
.in-head h2 { font-size: var(--fs-2xl); margin: 0; }
.in-theme { 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); }

/* 01 HERO */
.in-hero { padding-block: clamp(2.75rem, 1.5rem + 4vw, 5.5rem); }
.in-hero h1 { font-size: clamp(2.6rem, 1.6rem + 3.6vw, 4.6rem); margin: 0 0 var(--s-4); }
.in-hero__lede { max-width: 40rem; margin: 0; }

/* 02 INTRODUCTION (ivory) */
.in-intro { background: var(--ivory); padding-block: clamp(3rem, 2rem + 4vw, 6rem); }
.in-intro__grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: clamp(2rem, 1rem + 4vw, 5rem); align-items: start; }
.in-intro__lead { margin: 0; font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.4rem); line-height: 1.2; max-width: 20ch; }
.in-intro__body p { margin: 0 0 var(--s-4); line-height: 1.7; max-width: 38rem; }
.in-intro__body p:last-child { margin-bottom: 0; color: var(--text-muted); }

/* 03 FEATURED (paper) */
.in-featured { background: var(--paper); padding-block: clamp(3rem, 2rem + 4vw, 6rem); }
.in-feature { padding-top: var(--s-6); border-top: 1px solid var(--line-strong); max-width: 60rem; }
.in-feature h2 { margin: 0 0 var(--s-5); font-size: clamp(1.9rem, 1.3rem + 2vw, 3.1rem); line-height: 1.12; }
.in-feature h2 a { color: var(--ink); text-decoration: none; background-image: linear-gradient(var(--gold), var(--gold)); background-size: 0 1px; background-position: 0 100%; background-repeat: no-repeat; transition: background-size var(--dur) var(--ease); }
.in-feature h2 a:hover, .in-feature h2 a:focus-visible { background-size: 100% 1px; }
.in-feature__stand { margin: 0 0 var(--s-4); font-family: var(--serif); font-size: var(--fs-md); line-height: 1.55; color: var(--text); max-width: 46rem; }
.in-feature__by { margin: 0; font-size: 0.9rem; color: var(--text-muted); }

/* 04 SUBJECTS (deeper ivory; three typographic columns) */
.in-subjects { background: var(--ivory-2); padding-block: clamp(3rem, 2rem + 4vw, 6rem); }
.in-subject-list { list-style: none; margin: 0; padding: var(--s-6) 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 0.5rem + 3vw, 4rem); border-top: 1px solid var(--line-strong); }
.in-subject-list h3 { margin: 0 0 var(--s-3); font-size: clamp(1.25rem, 1.05rem + 0.6vw, 1.55rem); line-height: 1.2; }
.in-subject-list p { margin: 0 0 var(--s-4); color: var(--text-muted); line-height: 1.6; }
.in-subject-list a { display: inline-block; padding-block: 0.2rem; font-size: 0.95rem; font-weight: 500; line-height: 1.45; color: var(--ink); text-decoration-color: var(--gold); text-underline-offset: 0.25em; }

/* 05 ALL INSIGHTS (ivory; numbered editorial rows) */
.in-list { background: var(--ivory); padding-block: clamp(3rem, 2rem + 4vw, 6rem); }
.in-rows { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--line-strong); }
.in-rows > 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); }
.in-rows .in-n { padding-top: 0.35rem; }
.in-rows h3 { margin: 0 0 var(--s-3); font-size: clamp(1.35rem, 1.1rem + 0.8vw, 1.8rem); line-height: 1.2; max-width: 34ch; }
.in-rows h3 a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
.in-rows h3 a:hover { text-decoration-color: var(--gold); }
.in-rows p:not(.in-theme) { margin: 0; color: var(--text-muted); line-height: 1.6; max-width: 46rem; }

/* 06 PERSPECTIVE (charcoal) */
.in-persp { background: var(--ink); color: var(--on-dark); padding-block: clamp(3rem, 2rem + 4vw, 6rem); }
.in-persp .in-head h2 { color: var(--on-dark); }
.in-principles { list-style: none; margin: 0; padding: var(--s-6) 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 0.5rem + 3vw, 4rem); border-top: 1px solid var(--line-dark-2); }
.in-principles .in-n { margin-bottom: var(--s-3); color: var(--gold-soft); }
.in-principles h3 { margin: 0 0 var(--s-3); font-size: clamp(1.3rem, 1.1rem + 0.6vw, 1.6rem); line-height: 1.2; color: var(--on-dark); }
.in-principles p { margin: 0; color: var(--on-dark-muted); line-height: 1.6; }

/* 07 CLOSING (light) */
.in-closing { background: var(--ivory); color: var(--text); padding-block: clamp(3.5rem, 2rem + 4vw, 6rem); }
.in-closing h2 { color: var(--ink); max-width: 14ch; }
.in-closing p:not(.eyebrow) { color: var(--text-muted); }

@media (max-width: 960px) {
  .in-intro__grid { grid-template-columns: 1fr; gap: var(--s-5); }
  .in-subject-list, .in-principles { grid-template-columns: 1fr; gap: var(--s-6); }
}
@media (max-width: 640px) {
  .in-rows > li { grid-template-columns: 1fr; gap: var(--s-2); padding-block: var(--s-5); }
}