/* Cost Seg Audit — minimal/editorial reference site
   Design tokens lifted from the Claude Design handoff (cost-seg-audit/shared.jsx).
   Inter + JetBrains Mono. Soft off-white surfaces, indigo accent. */

:root {
  --bg: #FCFCFC;
  --surface: #FFFFFF;
  --line: #EAEAEA;
  --line-soft: #F2F2F2;
  --ink: #15161A;
  --ink-soft: #52555E;
  --ink-muted: #595959;
  --accent: #5E6AD2;
  --accent-soft: rgba(94, 106, 210, 0.10);
  --high: #A8341E;
  --med: #8A5A00;
  --high-bg: #FBE9E7;
  --med-bg: #FFF4E0;
  --font-sans: "Inter", -apple-system, ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* Scroll progress bar */
.csa-progress {
  position: fixed; top: 0; left: 0; height: 2px;
  background: var(--accent); z-index: 100;
  transition: width .12s linear; width: 0;
}

/* Disclosure banner */
.csa-disclosure {
  background: var(--ink); color: #F4F4F6;
  padding: 10px 24px; font-size: 12; font-family: var(--font-mono);
  letter-spacing: 0.02em; display: flex; justify-content: center;
  align-items: center; gap: 12px; line-height: 1.5; flex-wrap: wrap;
}
.csa-disclosure__lbl { color: #9DA0AB; }
.csa-disclosure__body { color: #D8DAE0; }
.csa-disclosure__body a { color: #FFF; border-bottom: 1px solid rgba(255, 255, 255, 0.4); }

/* Nav */
.csa-nav {
  padding: 20px 56px; display: flex; align-items: center;
  justify-content: space-between; border-bottom: 1px solid var(--line);
  background: var(--bg); position: sticky; top: 0; z-index: 20;
}
.csa-nav__logo { display: flex; align-items: center; gap: 8px; color: var(--ink); }
.csa-nav__mark {
  width: 18px; height: 18px; border: 1.5px solid var(--ink);
  border-radius: 4px; position: relative;
}
.csa-nav__mark::after {
  content: ""; position: absolute; top: 4px; left: 4px; right: 4px;
  height: 1.5px; background: var(--ink);
}
.csa-nav__name { font-weight: 500; letter-spacing: -0.01em; }
.csa-nav__items { display: flex; gap: 32px; font-size: 13.5px; color: var(--ink-soft); }
.csa-nav__items a { padding-bottom: 2px; border-bottom: 1px solid transparent; }
.csa-nav__items a.is-active { color: var(--ink); font-weight: 500; border-bottom-color: var(--ink); }
.csa-nav__search { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--ink-soft); }
.csa-nav__kbd {
  font-family: var(--font-mono); font-size: 11px; padding: 2px 6px;
  border: 1px solid var(--line); border-radius: 4px; color: var(--ink-muted);
  background: var(--surface);
}

/* Footnote popovers */
.csa-fn { border-bottom: 1px dotted var(--ink-muted); cursor: help; position: relative; }
.csa-fn:hover .csa-fn-pop, .csa-fn:focus-visible .csa-fn-pop {
  opacity: 1; transform: translate(-50%, 0); pointer-events: auto;
}
.csa-fn-pop {
  position: absolute; bottom: calc(100% + 10px); left: 50%;
  transform: translate(-50%, 4px);
  width: 280px; background: var(--ink); color: #F4F4F6;
  padding: 12px 14px; border-radius: 8px; font-size: 12.5px; line-height: 1.5;
  opacity: 0; pointer-events: none; transition: opacity .15s, transform .15s;
  z-index: 50; font-family: var(--font-sans); font-weight: 400;
  box-shadow: 0 8px 32px rgba(0, 0, 0, .18);
}
.csa-fn-pop::after {
  content: ""; position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  border: 5px solid transparent; border-top-color: var(--ink);
}

/* Hero */
.csa-hero { padding: 96px 56px 72px; border-bottom: 1px solid var(--line); }
.csa-hero__inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: 1.5fr 1fr; gap: 80px; align-items: flex-end;
}
.csa-eyebrow {
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-muted);
  letter-spacing: 0.04em;
}
.csa-hero__h {
  font-size: 60px; line-height: 1.04; font-weight: 300;
  letter-spacing: -0.025em; margin: 28px 0 24px; color: var(--ink);
}
.csa-hero__sub {
  font-size: 19px; line-height: 1.55; color: var(--ink-soft);
  margin: 0 0 36px; max-width: 600px;
}
.csa-hero__meta {
  display: flex; gap: 0; font-family: var(--font-mono); font-size: 12px;
  color: var(--ink-muted); padding-top: 20px; border-top: 1px solid var(--line);
  max-width: 540px;
}
.csa-hero__meta span {
  padding-right: 18px; margin-right: 18px;
  border-right: 1px solid var(--line);
}
.csa-hero__meta span:last-child { border-right: none; }

/* Hero data figure */
.csa-figure {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 6px; padding: 24px;
}
.csa-figure__lbl {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  letter-spacing: 0.06em; margin-bottom: 14px;
}
.csa-figure__row { margin-bottom: 10px; }
.csa-figure__row:last-child { margin-bottom: 0; }
.csa-figure__rowH {
  display: flex; justify-content: space-between; font-size: 12.5px;
  margin-bottom: 5px; color: var(--ink-soft);
}
.csa-figure__rowH--dim { color: var(--ink-muted); }
.csa-figure__rowH .pct { font-family: var(--font-mono); color: var(--ink); }
.csa-figure__rowH--dim .pct { color: var(--ink-muted); }
.csa-figure__bar { height: 3px; background: var(--line-soft); border-radius: 1.5px; overflow: hidden; }
.csa-figure__barFill { height: 100%; background: var(--accent); border-radius: 1.5px; }
.csa-figure__barFill--dim { background: var(--ink-muted); }
.csa-figure__cap {
  font-family: var(--font-mono); font-size: 10px; color: var(--ink-muted);
  margin-top: 12px; font-style: italic;
}

/* KV strip */
.csa-strip { padding: 32px 56px; }
.csa-strip__inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line); border-radius: 6px; background: var(--surface);
}
.csa-strip__cell { padding: 20px 24px; border-right: 1px solid var(--line); }
.csa-strip__cell:last-child { border-right: none; }
.csa-strip__k {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  letter-spacing: 0.04em; margin-bottom: 6px; text-transform: uppercase;
}
.csa-strip__v { font-size: 16px; font-weight: 500; letter-spacing: -0.01em; }

/* Numbered sections */
.csa-section { padding: 88px 56px; border-top: 1px solid var(--line); }
.csa-section__inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: 120px 1fr; gap: 60px;
}
.csa-section__num {
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-muted);
  letter-spacing: 0.04em;
}
.csa-section__kicker {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  letter-spacing: 0.06em; margin-top: 8px;
}
.csa-section__h {
  font-size: 30px; line-height: 1.2; font-weight: 400;
  letter-spacing: -0.02em; margin: 0 0 24px; max-width: 640px; color: var(--ink);
}
.csa-section__body { font-size: 16px; color: var(--ink-soft); line-height: 1.7; max-width: 660px; }
.csa-section__body p { margin: 0 0 16px; }
.csa-section__body p:last-child { margin-bottom: 0; }

.csa-row {
  display: grid; grid-template-columns: 180px 1fr; padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}
.csa-row__k { font-family: var(--font-mono); font-size: 13px; color: var(--ink-muted); }
.csa-row__v { color: var(--ink); font-size: 15px; }
.csa-row__sub { color: var(--ink-soft); font-size: 13.5px; margin-top: 2px; }

.csa-rowList { border-bottom: 1px solid var(--line-soft); }

.csa-pill {
  font-family: var(--font-mono); font-size: 10.5px; padding: 2px 7px; border-radius: 3px;
  margin-right: 10px; letter-spacing: 0.04em;
}
.csa-pill--high { background: var(--high-bg); color: var(--high); }
.csa-pill--med { background: var(--med-bg); color: var(--med); }

.csa-callout {
  margin-top: 24px; padding: 14px 18px; background: var(--accent-soft);
  border-radius: 6px; font-size: 14px; color: var(--ink);
}
.csa-callout__lbl {
  font-family: var(--font-mono); font-size: 11px; color: var(--accent);
  letter-spacing: 0.06em; margin-right: 14px;
}
.csa-callout a { color: var(--accent); border-bottom: 1px solid var(--accent-soft); }

.csa-note {
  background: var(--surface); border: 1px solid var(--line); border-radius: 6px;
  padding: 18px 22px; font-size: 14px; color: var(--ink-soft); line-height: 1.6;
}
.csa-note__lbl {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  letter-spacing: 0.06em; margin-right: 14px;
}
.csa-note a { color: var(--ink); border-bottom: 1px solid var(--line); }
.csa-section__sustained { color: var(--accent); }

.csa-cap {
  margin-top: 16px; font-size: 13px; color: var(--ink-muted); font-style: italic;
}

/* Tool block */
.csa-tool {
  padding: 72px 56px; border-top: 1px solid var(--line); background: var(--surface);
}
.csa-tool__inner { max-width: 760px; margin: 0 auto; }
.csa-tool__h {
  font-size: 28px; line-height: 1.2; font-weight: 400;
  letter-spacing: -0.02em; margin: 14px 0 8px;
}
.csa-tool__sub { margin: 0 0 28px; color: var(--ink-soft); font-size: 15px; }

.csa-checker {
  background: var(--bg); border: 1px solid var(--line); border-radius: 6px;
}
.csa-checker__progress {
  padding: 14px 22px; border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-muted);
}
.csa-checker__bar {
  flex: 1; margin: 0 16px; height: 2px;
  background: var(--line-soft); border-radius: 1px; overflow: hidden;
}
.csa-checker__barFill {
  width: 0%; height: 100%; background: var(--accent);
  border-radius: 1px; transition: width .2s;
}
.csa-checker__score { color: var(--ink); }

.csa-q {
  padding: 18px 22px; border-top: 1px solid var(--line-soft);
  display: grid; grid-template-columns: 1fr 140px; gap: 24px; align-items: flex-start;
}
.csa-q:first-of-type { border-top: none; }
.csa-q__title { font-size: 14.5px; color: var(--ink); margin-bottom: 4px; }
.csa-q__num {
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-muted); margin-right: 10px;
}
.csa-q__help { font-size: 12.5px; color: var(--ink-muted); line-height: 1.5; padding-left: 32px; }
.csa-q__btns { display: flex; gap: 6px; justify-content: flex-end; }
.csa-q__btn {
  padding: 6px 14px; font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.04em; cursor: pointer; border-radius: 4px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-soft);
  text-transform: uppercase;
}
.csa-q__btn[data-on="yes"] {
  border-color: var(--accent); background: var(--accent-soft); color: var(--accent);
}
.csa-q__btn[data-on="no"] {
  border-color: var(--high); background: var(--high-bg); color: var(--high);
}

.csa-verdict {
  padding: 20px 22px; border-top: 1px solid var(--line);
  background: var(--surface); border-radius: 0 0 6px 6px;
}
.csa-verdict__lbl {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  margin-bottom: 8px; font-weight: 600;
}
.csa-verdict__body { font-size: 14.5px; color: var(--ink); line-height: 1.6; margin-bottom: 16px; }
.csa-verdict__cta {
  font-size: 13.5px; color: var(--ink-soft); line-height: 1.6;
  margin-bottom: 16px; padding-top: 14px; border-top: 1px solid var(--line-soft);
}
.csa-verdict__redirect {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; padding: 14px 16px; border-radius: 4px;
}
.csa-verdict__count {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em;
}
.csa-verdict__btns { display: flex; gap: 8px; }
.csa-verdict__cancel {
  padding: 6px 12px; font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.04em; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink-soft);
  border-radius: 3px; cursor: pointer; text-transform: uppercase;
}
.csa-verdict__go {
  padding: 6px 12px; font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.04em; color: #fff;
  border-radius: 3px; text-transform: uppercase;
}

/* Related cards */
.csa-related { padding: 88px 56px; border-top: 1px solid var(--line); }
.csa-related__inner { max-width: 1100px; margin: 0 auto; }
.csa-related__lbl {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  letter-spacing: 0.06em; margin-bottom: 20px;
}
.csa-related__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.csa-card {
  display: block; padding: 24px; border: 1px solid var(--line);
  border-radius: 6px; background: var(--surface); color: var(--ink);
  transition: border-color .12s, transform .12s;
}
.csa-card:hover { border-color: var(--ink-muted); }
.csa-card__k {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  letter-spacing: 0.06em; margin-bottom: 12px; text-transform: uppercase;
}
.csa-card__t { font-size: 17px; font-weight: 500; letter-spacing: -0.01em; margin-bottom: 8px; }
.csa-card__d { font-size: 13px; color: var(--ink-soft); line-height: 1.6; margin-bottom: 14px; }
.csa-card__cta { font-family: var(--font-mono); font-size: 12px; color: var(--accent); }

/* Footer */
.csa-footer-cols {
  padding: 48px 56px; border-top: 1px solid var(--line); background: var(--bg);
}
.csa-footer-cols__inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
}
.csa-footer__brand {
  display: flex; align-items: center; gap: 8px; margin-bottom: 12px;
}
.csa-footer__brand .csa-nav__mark { width: 16px; height: 16px; }
.csa-footer__brand .csa-nav__mark::after { top: 3.5px; left: 3.5px; right: 3.5px; }
.csa-footer__desc {
  font-size: 13px; color: var(--ink-soft); line-height: 1.6;
  max-width: 360px; margin: 0 0 12px;
}
.csa-footer__discl {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  line-height: 1.6; margin: 0; letter-spacing: 0.02em;
}
.csa-footer__discl a { color: var(--ink-soft); border-bottom: 1px solid var(--line); }
.csa-footer-col h4 {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  letter-spacing: 0.06em; margin: 0 0 14px; font-weight: 400;
  text-transform: uppercase;
}
.csa-footer-col a { display: block; font-size: 13.5px; color: var(--ink-soft); padding: 5px 0; }
.csa-footer-col a:hover { color: var(--ink); }
.csa-footer-bottom {
  padding: 20px 56px; border-top: 1px solid var(--line); background: var(--bg);
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  display: flex; justify-content: space-between; letter-spacing: 0.02em;
}

/* Long-form article header (defensibility / glossary / faq) */
.csa-articleHeader {
  padding: 88px 56px 56px; border-bottom: 1px solid var(--line);
}
.csa-articleHeader__inner { max-width: 920px; margin: 0 auto; }
.csa-articleHeader__h {
  font-size: 48px; line-height: 1.05; font-weight: 300;
  letter-spacing: -0.025em; margin: 28px 0 24px; color: var(--ink);
}
.csa-articleHeader__sub {
  font-size: 18px; line-height: 1.55; color: var(--ink-soft);
  margin: 0 0 32px; max-width: 640px;
}
.csa-articleHeader__meta {
  display: flex; gap: 0; font-family: var(--font-mono); font-size: 12px;
  color: var(--ink-muted);
}
.csa-articleHeader__meta span {
  padding-right: 18px; margin-right: 18px;
  border-right: 1px solid var(--line);
}
.csa-articleHeader__meta span:last-child { border-right: none; }

/* Numbered article body section (defensibility) */
.csa-article {
  padding: 72px 56px; border-top: 1px solid var(--line);
}
.csa-article__inner {
  max-width: 920px; margin: 0 auto;
  display: grid; grid-template-columns: 120px 1fr; gap: 60px;
}
.csa-article__num {
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-muted);
  letter-spacing: 0.04em;
}
.csa-article__h {
  font-size: 28px; line-height: 1.2; font-weight: 400;
  letter-spacing: -0.02em; margin: 0 0 14px;
}
.csa-article__lede {
  margin: 0 0 32px; font-size: 16px; color: var(--ink-soft);
  line-height: 1.65; max-width: 600px;
}

/* Check-marked item rows */
.csa-checkItem {
  padding: 18px 0; border-top: 1px solid var(--line-soft);
  display: grid; grid-template-columns: 20px 1fr; gap: 16px; align-items: flex-start;
}
.csa-checkItem:last-child { border-bottom: 1px solid var(--line-soft); }
.csa-checkItem__mark {
  width: 14px; height: 14px; border: 1.5px solid var(--accent);
  border-radius: 3px; margin-top: 4px; position: relative;
}
.csa-checkItem__mark::after {
  content: ""; position: absolute; top: 1px; left: 4px;
  width: 4px; height: 8px;
  border-right: 1.5px solid var(--accent);
  border-bottom: 1.5px solid var(--accent);
  transform: rotate(45deg);
}
.csa-checkItem__t { font-size: 15px; color: var(--ink); font-weight: 500; margin-bottom: 4px; }
.csa-checkItem__d { font-size: 14px; color: var(--ink-soft); line-height: 1.6; }

/* Closing CTA block (used on inner pages) */
.csa-closing {
  padding: 72px 56px; border-top: 1px solid var(--line); background: var(--surface);
}
.csa-closing__inner { max-width: 760px; margin: 0 auto; }
.csa-closing__lbl {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  letter-spacing: 0.06em; margin-bottom: 14px;
}
.csa-closing__h {
  font-size: 24px; font-weight: 400; letter-spacing: -0.02em; margin: 0 0 14px;
}
.csa-closing__p { margin: 0 0 20px; color: var(--ink-soft); font-size: 15px; }
.csa-closing__btn {
  display: inline-block; padding: 10px 18px;
  border: 1px solid var(--accent); color: var(--accent);
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em;
  border-radius: 4px; background: var(--accent-soft);
}
.csa-closing__btn:hover { background: var(--accent); color: #fff; }
.csa-closing__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.csa-closing__card {
  display: block; padding: 22px; border: 1px solid var(--line);
  border-radius: 6px; background: var(--bg); color: var(--ink);
}
.csa-closing__card:hover { border-color: var(--ink-muted); }
.csa-closing__cardT { font-size: 16px; font-weight: 500; margin-bottom: 6px; letter-spacing: -0.01em; }
.csa-closing__cardD { font-size: 13px; color: var(--ink-soft); margin-bottom: 12px; }
.csa-closing__cardCta { font-family: var(--font-mono); font-size: 12px; color: var(--accent); }

/* Glossary */
.csa-gloss-search {
  padding: 0; max-width: 920px; margin: 0 auto;
}
.csa-search {
  width: 100%; max-width: 420px; padding: 10px 14px; font-size: 14px;
  font-family: var(--font-sans); border: 1px solid var(--line); border-radius: 4px;
  background: var(--surface); color: var(--ink); outline: none;
}
.csa-search:focus { border-color: var(--ink); }
.csa-gloss {
  padding: 40px 56px 80px;
}
.csa-gloss__inner { max-width: 920px; margin: 0 auto; }
.csa-gloss__row {
  display: grid; grid-template-columns: 240px 1fr; gap: 40px;
  padding: 22px 0; border-top: 1px solid var(--line-soft);
}
.csa-gloss__last { border-top: 1px solid var(--line-soft); }
.csa-gloss__term {
  font-family: var(--font-sans); font-size: 16px; font-weight: 500;
  color: var(--ink); letter-spacing: -0.01em;
}
.csa-gloss__def { font-size: 15px; color: var(--ink-soft); line-height: 1.65; }
.csa-gloss__empty {
  padding: 40px; text-align: center; color: var(--ink-muted); font-size: 14px;
}

/* FAQ */
.csa-faq { padding: 64px 56px; }
.csa-faq__inner { max-width: 920px; margin: 0 auto; }
.csa-faq__group { margin-bottom: 56px; }
.csa-faq__groupRow {
  display: grid; grid-template-columns: 160px 1fr; gap: 40px; align-items: flex-start;
}
.csa-faq__lbl {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  letter-spacing: 0.08em; margin-top: 22px; text-transform: uppercase;
}
.csa-faq__list { border-bottom: 1px solid var(--line-soft); }
.csa-faqItem {
  border-top: 1px solid var(--line-soft); padding: 18px 0;
}
.csa-faqItem__head {
  display: flex; align-items: flex-start; gap: 16px; cursor: pointer;
  background: none; border: 0; padding: 0; text-align: left; width: 100%;
  color: inherit; font-family: inherit;
}
.csa-faqItem__icon {
  font-family: var(--font-mono); font-size: 14px; color: var(--ink-muted);
  transition: transform .2s, color .2s;
  margin-top: 2px; width: 14px; text-align: center; flex-shrink: 0;
}
.csa-faqItem[open] .csa-faqItem__icon {
  transform: rotate(45deg); color: var(--accent);
}
.csa-faqItem__q {
  font-size: 16px; color: var(--ink); font-weight: 500; letter-spacing: -0.01em;
}
.csa-faqItem__body {
  padding: 14px 0 6px 30px; font-size: 15px; color: var(--ink-soft);
  line-height: 1.7; max-width: 640px;
}

/* Responsive */
@media (max-width: 900px) {
  .csa-nav { padding: 16px 24px; flex-wrap: wrap; gap: 12px; }
  .csa-nav__items { gap: 20px; order: 3; flex-basis: 100%; }
  .csa-hero { padding: 64px 24px 56px; }
  .csa-hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .csa-hero__h { font-size: 42px; }
  .csa-hero__sub { font-size: 17px; }
  .csa-strip { padding: 24px; }
  .csa-strip__inner { grid-template-columns: repeat(2, 1fr); }
  .csa-strip__cell:nth-child(2) { border-right: none; }
  .csa-strip__cell:nth-child(1), .csa-strip__cell:nth-child(2) { border-bottom: 1px solid var(--line); }
  .csa-section { padding: 64px 24px; }
  .csa-section__inner { grid-template-columns: 1fr; gap: 24px; }
  .csa-section__h { font-size: 26px; }
  .csa-row { grid-template-columns: 1fr; gap: 4px; }
  .csa-tool { padding: 56px 24px; }
  .csa-q { grid-template-columns: 1fr; gap: 14px; }
  .csa-q__btns { justify-content: flex-start; }
  .csa-q__help { padding-left: 0; }
  .csa-related { padding: 64px 24px; }
  .csa-related__grid { grid-template-columns: 1fr; }
  .csa-footer-cols { padding: 40px 24px; }
  .csa-footer-cols__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .csa-footer-bottom { padding: 16px 24px; flex-wrap: wrap; gap: 8px; }
  .csa-fn-pop { width: 240px; }
  .csa-articleHeader { padding: 64px 24px 40px; }
  .csa-articleHeader__h { font-size: 34px; }
  .csa-articleHeader__sub { font-size: 16px; }
  .csa-articleHeader__meta { flex-wrap: wrap; row-gap: 6px; }
  .csa-article { padding: 56px 24px; }
  .csa-article__inner { grid-template-columns: 1fr; gap: 24px; }
  .csa-article__h { font-size: 24px; }
  .csa-closing { padding: 56px 24px; }
  .csa-closing__grid { grid-template-columns: 1fr; }
  .csa-gloss { padding: 32px 24px 64px; }
  .csa-gloss__row { grid-template-columns: 1fr; gap: 6px; }
  .csa-gloss__term { font-size: 15px; }
  .csa-faq { padding: 48px 24px; }
  .csa-faq__groupRow { grid-template-columns: 1fr; gap: 14px; }
  .csa-faq__lbl { margin-top: 0; }
}