:root {
  --matamet-sr-ink: #14202b;
  --matamet-sr-muted: #5d6872;
  --matamet-sr-line: #d8dfe3;
  --matamet-sr-paper: #f5f7f6;
  --matamet-sr-accent: #a64b2a;
}

.matamet-evidence-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr)) auto;
  gap: 1rem 2rem;
  align-items: center;
  margin: 0 0 clamp(2rem, 5vw, 4rem);
  padding: 1rem 0;
  border-block: 1px solid var(--matamet-sr-line);
  color: var(--matamet-sr-ink);
}

.matamet-evidence-panel div { display: grid; gap: .2rem; }
.matamet-evidence-panel span,
.matamet-evidence-panel small { color: var(--matamet-sr-muted); font-size: .78rem; letter-spacing: .03em; }
.matamet-evidence-panel strong { font-size: .95rem; }
.matamet-evidence-panel a { color: inherit; text-underline-offset: .2em; }
.matamet-evidence-panel__standards { justify-self: end; font-size: .85rem; }

.matamet-methodology {
  width: min(1180px, calc(100% - 2rem));
  margin: clamp(3rem, 8vw, 7rem) auto;
  padding: clamp(1.5rem, 4vw, 3.5rem);
  border: 1px solid var(--matamet-sr-line);
  background: var(--matamet-sr-paper);
  color: var(--matamet-sr-ink);
}

.matamet-methodology__kicker,
.matamet-analysis-article__kicker {
  margin: 0 0 .65rem;
  color: var(--matamet-sr-accent);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.matamet-methodology h2 { max-width: 22ch; margin: 0 0 1rem; font-size: clamp(1.7rem, 4vw, 3rem); line-height: 1.05; }
.matamet-methodology > p { max-width: 75ch; }
.matamet-methodology__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin: 2rem 0 3rem; background: var(--matamet-sr-line); border: 1px solid var(--matamet-sr-line); }
.matamet-methodology__grid article { padding: 1.25rem; background: #fff; }
.matamet-methodology__grid h3 { margin: 0 0 .6rem; font-size: 1rem; }
.matamet-methodology__grid p { margin: 0; color: var(--matamet-sr-muted); font-size: .93rem; }
.matamet-methodology__links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .6rem 1.25rem; padding: 0; list-style: none; }
.matamet-methodology__links a { color: var(--matamet-sr-ink); font-weight: 600; text-underline-offset: .22em; }
.matamet-methodology__note { margin-top: 2rem; padding: 1rem 1.2rem; border-left: 3px solid var(--matamet-sr-accent); background: #fff; }

.matamet-steel-deferred {
  width: min(1180px, calc(100% - 2rem));
  margin: clamp(2rem, 5vw, 4rem) auto;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 2px solid #8a3d24;
  border-left-width: 8px;
  background: #fff4ee;
  color: #241812;
}
.matamet-steel-deferred h2 { margin: .45rem 0 .8rem; color: #241812; font-size: clamp(1.5rem, 3vw, 2.2rem); }
.matamet-steel-deferred p:last-child { max-width: 78ch; margin-bottom: 0; line-height: 1.65; }

.matamet-analysis-single { background: #fff; color: var(--matamet-sr-ink); }
.matamet-analysis-article { width: min(920px, calc(100% - 2rem)); margin: 0 auto; padding: clamp(2rem, 6vw, 6rem) 0; }
.matamet-breadcrumbs { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: clamp(2rem, 5vw, 4rem); color: var(--matamet-sr-muted); font-size: .82rem; }
.matamet-breadcrumbs a { color: inherit; }
.matamet-analysis-article__header { max-width: 820px; margin-bottom: 2rem; }
.matamet-analysis-article__header h1 { margin: 0; font-size: clamp(2.25rem, 7vw, 5.6rem); line-height: .96; letter-spacing: -.045em; }
.matamet-analysis-article__dek { max-width: 58ch; margin: 1.5rem 0; color: var(--matamet-sr-muted); font-size: clamp(1.05rem, 2vw, 1.35rem); line-height: 1.55; }
.matamet-analysis-article__dates { display: flex; flex-wrap: wrap; gap: .7rem 1.5rem; color: var(--matamet-sr-muted); font-size: .82rem; }
.matamet-analysis-article__content { max-width: 740px; font-size: clamp(1.02rem, 1.3vw, 1.14rem); line-height: 1.75; }
.matamet-analysis-article__content h2 { margin-top: 2.7em; font-size: clamp(1.5rem, 3vw, 2.3rem); line-height: 1.15; }
.matamet-analysis-article__content h3 { margin-top: 2em; }
.matamet-analysis-article__content a { text-underline-offset: .2em; }
.matamet-analysis-article__next { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 1rem; margin-top: clamp(3rem, 7vw, 6rem); padding-top: 1.5rem; border-top: 1px solid var(--matamet-sr-line); }
.matamet-analysis-article__next a { color: var(--matamet-sr-ink); font-weight: 600; }

/* Preserve the Atlas chapter layout after replacing its invalid nested <main>. */
.iav2-article-grid .iav2-article-body section { display: grid; grid-template-columns: 42px 1fr; gap: 16px; padding: 38px 0; border-top: 1px solid var(--iav2-line); }
.iav2-article-grid .iav2-article-body section:first-child { border-top: 0; }

@media (max-width: 880px) {
  .matamet-methodology__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .matamet-methodology__links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .matamet-analysis-article__next { grid-template-columns: 1fr 1fr; }
  .matamet-analysis-article__next strong { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .matamet-evidence-panel { grid-template-columns: 1fr; }
  .matamet-evidence-panel__standards { justify-self: start; }
  .matamet-methodology__grid,
  .matamet-methodology__links,
  .matamet-analysis-article__next { grid-template-columns: 1fr; }
  .matamet-methodology { width: min(100% - 1rem, 1180px); padding: 1.25rem; }
  .iav2-article-grid .iav2-article-body section { grid-template-columns: 30px 1fr; gap: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  .matamet-methodology *, .matamet-analysis-article * { scroll-behavior: auto !important; }
}