/* Insight detail pages V4 */
.article-v4 {
  --article-bg: #f4f1ea;
  --article-ink: #0a4b48;
  --article-copy: rgba(6,64,63,.78);
  --article-line: rgba(6,87,88,.14);
  background: var(--article-bg);
}
.article-v4 .page-main,
.article-v4 main { overflow: clip; }

.reading-progress {
  position: fixed;
  inset: 0 0 auto;
  height: 3px;
  z-index: 120;
  background: rgba(255,255,255,.08);
}
.reading-progress span { display: block; width: 0; height: 100%; background: var(--coral); }

.article-v4 .nav {
  position: fixed;
  inset: 3px 0 auto;
  color: #fff;
  background: transparent;
  border: 0;
  box-shadow: none;
  backdrop-filter: none;
  z-index: 100;
}
.article-v4 .nav.scrolled {
  background: rgba(5,22,20,.88);
  border-bottom: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(18px) saturate(1.2);
}
.article-v4 .nav-menu > a,
.article-v4 .brand small { color: rgba(255,255,255,.76); }
.article-v4 .nav-toggle span { background: #fff; }
.article-v4 .nav-toggle { border-color: rgba(255,255,255,.24); background: rgba(255,255,255,.06); }
.article-v4 .nav-cta { color: #fff; background: var(--coral); border-color: transparent; }

.article-hero-v4 {
  position: relative;
  min-height: min(880px, 92svh);
  display: flex;
  align-items: end;
  overflow: hidden;
  background: #071816;
  color: #fff;
}
.article-hero-media { position: absolute; inset: 0; }
.article-hero-media img { width: 100%; height: 100%; object-fit: cover; opacity: .56; filter: saturate(.72) contrast(1.08); }
.article-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4,20,18,.95) 0%, rgba(4,20,18,.78) 52%, rgba(4,20,18,.34) 100%),
    linear-gradient(0deg, rgba(4,20,18,.96), rgba(4,20,18,.08) 64%);
}
.article-hero-grid {
  position: absolute;
  inset: 0;
  opacity: .2;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg,#000,transparent 82%);
}
.article-hero-inner {
  position: relative;
  width: min(1240px, 100%);
  margin: 0 auto;
  padding: 150px clamp(24px, 6vw, 78px) clamp(62px, 9vw, 116px);
}
.article-back {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 40px;
  color: rgba(255,255,255,.66);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.article-back:hover { color: #fff; }
.article-category {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #e58e83;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.article-category::before { content: ""; width: 38px; height: 1px; background: currentColor; }
.article-hero-inner h1 {
  max-width: 12ch;
  margin-top: 22px;
  font-size: clamp(54px, 7.2vw, 104px);
  line-height: .93;
  letter-spacing: -.057em;
  color: #fff;
}
.article-hero-deck {
  max-width: 62ch;
  margin-top: 28px;
  color: rgba(255,255,255,.68);
  font-size: clamp(17px, 1.6vw, 21px);
  line-height: 1.7;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}
.article-meta span {
  padding: 10px 13px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 999px;
  background: rgba(255,255,255,.04);
  color: rgba(255,255,255,.72);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  backdrop-filter: blur(12px);
}
.article-hero-number {
  position: absolute;
  right: clamp(24px, 6vw, 80px);
  bottom: clamp(48px, 8vw, 100px);
  color: rgba(255,255,255,.08);
  font-size: clamp(120px, 18vw, 270px);
  font-weight: 800;
  line-height: .75;
  letter-spacing: -.08em;
}

.article-layout-v4 {
  width: min(1240px, 100%);
  margin: 0 auto;
  padding: clamp(74px, 10vw, 140px) clamp(24px, 6vw, 78px);
  display: grid;
  grid-template-columns: 250px minmax(0, 760px);
  justify-content: space-between;
  gap: clamp(56px, 8vw, 112px);
}
.article-rail-v4 { position: relative; }
.article-rail-inner { position: sticky; top: 118px; }
.author-mini {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 14px;
  align-items: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--article-line);
}
.author-mini img { width: 54px; height: 54px; border-radius: 50%; object-fit: cover; object-position: 52% 18%; }
.author-mini strong { display: block; font-size: 14px; color: var(--article-ink); }
.author-mini span { display: block; margin-top: 4px; font-size: 12px; line-height: 1.4; color: rgba(6,64,63,.58); }
.article-toc { margin-top: 28px; }
.article-toc > span { display: block; margin-bottom: 14px; color: var(--coral); font-size: 10px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
.article-toc a { display: block; padding: 8px 0 8px 14px; border-left: 1px solid var(--article-line); color: rgba(6,64,63,.58); font-size: 13px; line-height: 1.4; transition: color .25s ease, border-color .25s ease; }
.article-toc a:hover,
.article-toc a.active { color: var(--article-ink); border-left-color: var(--coral); }
.article-share { display: flex; gap: 9px; margin-top: 28px; }
.article-share a { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--article-line); border-radius: 50%; color: var(--article-ink); font-size: 12px; }
.article-share a:hover { background: #fff; border-color: rgba(196,105,96,.35); }

.article-content-v4 { min-width: 0; }
.article-standfirst {
  max-width: 34ch;
  margin-bottom: 70px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(29px, 3.2vw, 43px);
  line-height: 1.34;
  color: var(--article-ink);
  letter-spacing: -.025em;
}
.article-content-v4 section { scroll-margin-top: 120px; margin-bottom: clamp(64px, 9vw, 104px); }
.article-section-label { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; color: var(--coral); font-size: 10px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
.article-section-label b { font-size: 13px; }
.article-content-v4 h2 {
  max-width: 17ch;
  margin-bottom: 26px;
  font-size: clamp(35px, 4vw, 54px);
  line-height: 1.03;
  letter-spacing: -.043em;
  color: var(--article-ink);
}
.article-content-v4 h3 {
  margin: 34px 0 10px;
  font-size: clamp(21px, 2.2vw, 28px);
  line-height: 1.2;
  letter-spacing: -.025em;
  color: var(--article-ink);
}
.article-content-v4 p {
  margin-bottom: 22px;
  color: var(--article-copy);
  font-size: 18px;
  line-height: 1.82;
}
.article-content-v4 ul { margin: 26px 0; padding: 0; list-style: none; display: grid; gap: 13px; }
.article-content-v4 li { position: relative; padding-left: 28px; color: var(--article-copy); font-size: 17px; line-height: 1.7; }
.article-content-v4 li::before { content: ""; position: absolute; left: 0; top: .72em; width: 10px; height: 2px; background: var(--coral); }

.article-callout-v4 {
  position: relative;
  margin: 48px 0;
  padding: 34px 36px 34px 42px;
  border-radius: 0 22px 22px 0;
  background: #fff;
  box-shadow: 0 24px 70px -52px rgba(6,64,63,.52);
  color: var(--article-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.45;
}
.article-callout-v4::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--coral); }

.article-figure-v4 {
  margin: 48px 0;
  padding: clamp(26px, 5vw, 44px);
  border: 1px solid var(--article-line);
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 30px 80px -58px rgba(6,64,63,.48);
}
.article-figure-v4 figcaption { margin-top: 22px; color: rgba(6,64,63,.54); font-size: 12px; line-height: 1.55; }
.figure-kicker { display: block; margin-bottom: 24px; color: var(--coral); font-size: 10px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }

.discipline-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.discipline-card { padding: 24px; border-radius: 20px; background: #f3f0e8; border: 1px solid rgba(6,87,88,.08); }
.discipline-card span { display: block; color: var(--coral); font-size: 11px; font-weight: 700; letter-spacing: .12em; }
.discipline-card h3 { margin: 22px 0 8px; font-size: 20px; }
.discipline-card p { margin: 0; font-size: 14px; line-height: 1.65; }

.erp-orbit { position: relative; min-height: 420px; display: grid; place-items: center; }
.erp-core { width: 148px; height: 148px; display: grid; place-items: center; border-radius: 50%; background: #0a4b48; color: #fff; text-align: center; font-weight: 800; letter-spacing: -.02em; box-shadow: 0 0 0 24px rgba(6,87,88,.07), 0 0 0 48px rgba(6,87,88,.04); }
.erp-node { position: absolute; width: 170px; padding: 18px; border: 1px solid var(--article-line); border-radius: 17px; background: #fff; box-shadow: 0 20px 45px -38px rgba(6,64,63,.5); }
.erp-node strong { display: block; color: var(--article-ink); font-size: 15px; }
.erp-node span { display: block; margin-top: 6px; color: rgba(6,64,63,.58); font-size: 12px; line-height: 1.45; }
.erp-node.one { left: 0; top: 22px; }.erp-node.two { right: 0; top: 22px; }.erp-node.three { left: 0; bottom: 22px; }.erp-node.four { right: 0; bottom: 22px; }

.signal-grid-v4 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; counter-reset: signals; }
.signal-card-v4 { counter-increment: signals; padding: 26px; border-radius: 20px; background: #fff; border: 1px solid var(--article-line); }
.signal-card-v4::before { content: "0" counter(signals); display: block; margin-bottom: 34px; color: var(--coral); font-size: 11px; font-weight: 700; letter-spacing: .14em; }
.signal-card-v4 h3 { margin: 0 0 9px; font-size: 20px; }
.signal-card-v4 p { margin: 0; font-size: 14px; line-height: 1.65; }

.maturity-path { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; overflow: hidden; border: 1px solid var(--article-line); border-radius: 20px; background: var(--article-line); }
.maturity-step { position: relative; padding: 25px 20px; background: #fff; min-height: 170px; }
.maturity-step span { color: var(--coral); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.maturity-step strong { display: block; margin-top: 28px; color: var(--article-ink); font-size: 17px; line-height: 1.25; }
.maturity-step small { display: block; margin-top: 10px; color: rgba(6,64,63,.58); font-size: 12px; line-height: 1.5; }

.article-author-note {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 28px;
  align-items: center;
  margin-top: 100px;
  padding: 34px;
  border-radius: 26px;
  background: #071816;
  color: #fff;
}
.article-author-note img { width: 110px; height: 110px; border-radius: 20px; object-fit: cover; object-position: 52% 16%; }
.article-author-note h3 { margin: 0; color: #fff; }
.article-author-note p { margin: 10px 0 0; color: rgba(255,255,255,.62); font-size: 14px; line-height: 1.65; }

.related-insights-v4 { padding: clamp(78px, 10vw, 136px) clamp(24px, 6vw, 78px); background: #fffdf8; }
.related-insights-inner { width: min(1120px, 100%); margin: 0 auto; }
.related-insights-v4 h2 { max-width: 12ch; margin-top: 13px; font-size: clamp(38px, 5vw, 62px); line-height: 1; letter-spacing: -.045em; color: var(--article-ink); }
.related-grid-v4 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 44px; }
.related-card-v4 { min-height: 260px; padding: 28px; border: 1px solid var(--article-line); border-radius: 24px; background: #fff; color: var(--article-ink); display: flex; flex-direction: column; }
.related-card-v4 span { color: var(--coral); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; }
.related-card-v4 h3 { margin-top: auto; font-size: 28px; line-height: 1.08; letter-spacing: -.03em; }
.related-card-v4 p { margin-top: 12px; color: rgba(6,64,63,.64); line-height: 1.6; }

@media (max-width: 980px) {
  .article-layout-v4 { grid-template-columns: 1fr; }
  .article-rail-v4 { order: 2; }
  .article-rail-inner { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 28px; padding-top: 38px; border-top: 1px solid var(--article-line); }
  .article-toc { margin-top: 0; }
  .article-hero-number { display: none; }
}

@media (max-width: 700px) {
  .article-hero-v4 { min-height: 720px; }
  .article-hero-inner h1 { font-size: clamp(50px, 14vw, 72px); max-width: 10ch; }
  .article-hero-deck { font-size: 16px; }
  .article-layout-v4 { padding-top: 66px; }
  .article-rail-inner { grid-template-columns: 1fr; }
  .discipline-grid, .signal-grid-v4, .related-grid-v4 { grid-template-columns: 1fr; }
  .erp-orbit { min-height: auto; display: grid; grid-template-columns: 1fr; gap: 12px; }
  .erp-core { width: 128px; height: 128px; margin: 0 auto 20px; }
  .erp-node { position: static; width: auto; }
  .maturity-path { grid-template-columns: 1fr; }
  .article-author-note { grid-template-columns: 78px 1fr; gap: 18px; padding: 24px; }
  .article-author-note img { width: 78px; height: 78px; border-radius: 16px; }
  .article-content-v4 p { font-size: 17px; }
}

@media (max-width: 520px) {
  .article-meta { gap: 7px; }
  .article-meta span { padding: 8px 10px; font-size: 9px; }
  .article-callout-v4 { padding: 28px 24px 28px 30px; }
  .article-figure-v4 { padding: 22px 18px; border-radius: 22px; }
  .article-author-note { grid-template-columns: 1fr; }
}