/* ============================================================
   Cost Seg Smart — institutional dialect, shared spine
   Source Serif 4 (display) · IBM Plex Sans (body/UI) · JetBrains Mono (figures)
   Scoped under .ms so canvas chrome is unaffected.
   ============================================================ */

.ms {
  --navy: #0a2540;
  --ink: #0a2540;
  --body: #3c4a5c;
  --muted: #6b7a8d;
  --cream: #faf7f0;
  --white: #ffffff;
  --green: #1f7a4f;
  --gold: #c9a24a;
  --border: #e4e8ee;
  --serif: 'Source Serif 4', Georgia, serif;
  --sans: 'IBM Plex Sans', Helvetica, Arial, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', monospace;

  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--body);
  background: var(--white);
  width: 100%;
  text-align: left;
}
.ms *, .ms *::before, .ms *::after { box-sizing: border-box; }
.ms h1, .ms h2, .ms h3 { color: var(--ink); margin: 0; }
.ms p { margin: 0; }
.ms a { color: var(--navy); }

/* ---------- layout ---------- */
.ms-wrap { max-width: 1160px; margin: 0 auto; padding: 0 64px; }
.ms-section { padding: 88px 0; }
.ms-section--cream { background: var(--cream); }
.ms-section--navy { background: var(--navy); }

/* ---------- type ---------- */
.ms-eyebrow {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
  margin-bottom: 20px;
}
.ms-eyebrow::before { content: ""; width: 32px; height: 1px; background: var(--gold); }
.ms-h1 {
  font-family: var(--serif); font-weight: 600; font-size: 56px;
  line-height: 1.12; letter-spacing: -0.01em; text-wrap: pretty;
}
.ms-h2 {
  font-family: var(--serif); font-weight: 600; font-size: 36px;
  line-height: 1.2; letter-spacing: -0.005em; text-wrap: pretty;
}
.ms-h3 { font-family: var(--serif); font-weight: 600; font-size: 22px; line-height: 1.3; }
.ms-lede { font-size: 19px; line-height: 1.65; color: var(--body); text-wrap: pretty; }
.ms-small { font-size: 14px; line-height: 1.6; color: var(--muted); }
.ms-fig { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.ms-fig--green { color: var(--green); }

/* ---------- nav ---------- */
.ms-nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 0; border-bottom: 1px solid var(--border);
}
.ms-nav-brand { display: flex; align-items: baseline; gap: 10px; }
.ms-nav-domain { font-family: var(--serif); font-weight: 600; font-size: 19px; color: var(--ink); }
.ms-nav-net {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted);
  border-left: 1px solid var(--gold); padding-left: 10px;
}
.ms-nav-links { display: flex; align-items: center; gap: 32px; }
.ms-nav-links a { font-size: 15px; text-decoration: none; color: var(--body); }

/* ---------- buttons ---------- */
.ms-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--sans); font-weight: 600; font-size: 16px;
  padding: 14px 28px; border-radius: 4px; text-decoration: none;
  border: 1px solid var(--navy); cursor: pointer; white-space: nowrap;
}
.ms-btn--solid { background: var(--navy); color: #fff; }
.ms-btn--ghost { background: transparent; color: var(--navy); }
.ms-btn--onnavy { background: #fff; color: var(--navy); border-color: #fff; }
.ms-btn--sm { font-size: 14px; padding: 10px 18px; }

/* ---------- placeholder imagery ---------- */
.ms-ph {
  position: relative;
  background: repeating-linear-gradient(
    -45deg, #f1ede3, #f1ede3 10px, #faf7f0 10px, #faf7f0 20px);
  border: 1px dashed #cfc7b4;
  display: flex; align-items: center; justify-content: center;
}
.ms-ph--light {
  background: repeating-linear-gradient(
    -45deg, #eef1f5, #eef1f5 10px, #f7f9fb 10px, #f7f9fb 20px);
  border-color: #c4cdd8;
}
.ms-ph-label {
  font-family: var(--mono); font-size: 12px; color: #8a8268;
  background: rgba(255,255,255,0.85); padding: 6px 12px; border-radius: 3px;
  letter-spacing: 0.04em; text-align: center; line-height: 1.5;
}
.ms-ph--light .ms-ph-label { color: #6b7a8d; }

/* ---------- estimator card ---------- */
.ms-est {
  background: var(--white); border: 1px solid var(--border); border-radius: 6px;
  box-shadow: 0 1px 2px rgba(10,37,64,0.04), 0 12px 32px rgba(10,37,64,0.07);
  overflow: hidden;
}
.ms-est-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid var(--border);
}
.ms-est-title { font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.ms-est-body { padding: 24px; display: grid; gap: 20px; }
.ms-est-field label {
  display: block; font-size: 13px; font-weight: 600; color: var(--ink); margin-bottom: 8px;
}
.ms-est-input {
  display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); border-radius: 4px; padding: 12px 14px;
  font-family: var(--mono); font-size: 18px; color: var(--ink); background: #fbfcfd;
}
.ms-est-input .cur { color: var(--muted); }
.ms-est-divider { height: 1px; background: var(--border); }
.ms-est-row { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.ms-est-row .k { font-size: 14px; color: var(--body); }
.ms-est-row .v { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 16px; color: var(--ink); }
.ms-est-row .v--big { font-size: 24px; font-weight: 500; color: var(--green); }
.ms-est-tag {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); border: 1px solid var(--border); border-radius: 3px; padding: 2px 7px;
}
.ms-est-foot { padding: 14px 24px; background: var(--cream); border-top: 1px solid var(--border); }

/* ---------- recovery-period table ---------- */
.ms-table { width: 100%; border-collapse: collapse; background: var(--white); }
.ms-table th {
  font-family: var(--mono); font-size: 11.5px; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted);
  text-align: left; padding: 14px 20px; border-bottom: 1px solid var(--navy);
}
.ms-table td { padding: 18px 20px; border-bottom: 1px solid var(--border); vertical-align: top; font-size: 15.5px; }
.ms-table .period { font-family: var(--mono); font-size: 15px; color: var(--ink); white-space: nowrap; }
.ms-table .period em { font-style: normal; color: var(--green); font-weight: 500; }
.ms-class-note { font-size: 13.5px; color: var(--muted); margin-top: 6px; }

/* ---------- worked example ledger ---------- */
.ms-ledger {
  background: var(--white); border: 1px solid var(--border); border-radius: 6px; overflow: hidden;
}
.ms-ledger-head {
  padding: 20px 28px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.ms-ledger-title { font-family: var(--serif); font-weight: 600; font-size: 19px; color: var(--ink); }
.ms-ledger-rows { padding: 8px 0; }
.ms-ledger-row {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 13px 28px; gap: 24px;
}
.ms-ledger-row + .ms-ledger-row { border-top: 1px solid #f0f3f7; }
.ms-ledger-row .k { font-size: 15px; color: var(--body); }
.ms-ledger-row .k small { display: block; font-size: 12.5px; color: var(--muted); }
.ms-ledger-row .v { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 16px; color: var(--ink); white-space: nowrap; }
.ms-ledger-row--total { background: var(--cream); border-top: 1px solid var(--border) !important; }
.ms-ledger-row--total .k { font-weight: 600; color: var(--ink); }
.ms-ledger-row--total .v { font-size: 20px; color: var(--green); font-weight: 500; }
.ms-ledger-foot { padding: 16px 28px; border-top: 1px solid var(--border); background: #fbfcfd; }

.ms-footnote {
  font-size: 13px; line-height: 1.65; color: var(--muted);
}
.ms-footnote strong { color: var(--body); font-weight: 600; }

/* ---------- who cards ---------- */
.ms-who { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ms-who-card { border-top: 2px solid var(--navy); padding-top: 20px; }
.ms-who-card h3 { font-family: var(--serif); font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.ms-who-card p { font-size: 15px; }

/* ---------- method ---------- */
.ms-method { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.ms-method-list { display: grid; gap: 0; counter-reset: step; }
.ms-method-item { display: flex; gap: 18px; padding: 18px 0; }
.ms-method-item + .ms-method-item { border-top: 1px solid var(--border); }
.ms-method-item .num {
  font-family: var(--mono); font-size: 13px; color: var(--gold); padding-top: 3px; white-space: nowrap;
}
.ms-method-item h3 { font-size: 16.5px; font-family: var(--sans); font-weight: 600; margin-bottom: 4px; }
.ms-method-item p { font-size: 14.5px; color: var(--body); }

/* ---------- FAQ ---------- */
.ms-faq { border-top: 1px solid var(--border); }
.ms-faq-item { border-bottom: 1px solid var(--border); padding: 24px 0; }
.ms-faq-q { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; }
.ms-faq-q h3 { font-family: var(--serif); font-size: 19px; font-weight: 600; }
.ms-faq-q .toggle { font-family: var(--mono); color: var(--muted); font-size: 16px; }
.ms-faq-a { margin-top: 12px; font-size: 15.5px; max-width: 760px; }

/* ---------- CTA band ---------- */
.ms-cta {
  background: var(--navy); color: #fff; border-radius: 6px;
  padding: 56px 64px; display: flex; align-items: center; justify-content: space-between; gap: 48px;
}
.ms-cta h2 { font-family: var(--serif); font-weight: 600; font-size: 32px; color: #fff; line-height: 1.2; }
.ms-cta p { color: rgba(255,255,255,0.75); font-size: 15.5px; margin-top: 10px; }

/* ---------- footer ---------- */
.ms-footer { border-top: 1px solid var(--border); padding: 40px 0 48px; background: var(--white); }
.ms-footer-grid { display: flex; justify-content: space-between; gap: 48px; align-items: start; }
.ms-footer h4 {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 12px;
}
.ms-footer a { font-size: 14px; color: var(--body); text-decoration: none; display: block; margin-bottom: 8px; }
.ms-footer-legal { font-size: 12.5px; color: var(--muted); margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--border); }

/* ---------- gold hairline section rule ---------- */
.ms-rule { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; }
.ms-rule::after { content: ""; flex: 1; height: 1px; background: var(--border); }

/* ============================================================
   V2 — editorial treatment modifiers
   ============================================================ */
.ms--editorial .ms-h1 { font-size: 68px; line-height: 1.06; }
.ms--editorial .ms-section { padding: 104px 0; }

/* diagram callouts (V2 moat section) */
.ms-diagram { position: relative; }
.ms-callout { position: absolute; max-width: 230px; }
.ms-callout .line { height: 1px; background: var(--gold); margin-bottom: 8px; }
.ms-callout .tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; color: var(--green);
  text-transform: uppercase; display: block; margin-bottom: 3px;
}
.ms-callout .name { font-size: 14px; font-weight: 600; color: var(--ink); line-height: 1.35; }
.ms-callout .det { font-size: 12.5px; color: var(--muted); line-height: 1.45; margin-top: 2px; }

/* stat strip */
.ms-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.ms-stat { padding: 28px 32px; }
.ms-stat + .ms-stat { border-left: 1px solid var(--border); }
.ms-stat .v { font-family: var(--mono); font-size: 30px; color: var(--ink); font-variant-numeric: tabular-nums; }
.ms-stat .v em { font-style: normal; color: var(--green); }
.ms-stat .k { font-size: 13.5px; color: var(--muted); margin-top: 6px; }
.ms-stat .tag { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gold); display: block; margin-bottom: 8px; }

/* ============================================================
   PRODUCTION LAYER — grid classes (replacing comp inline styles),
   real-image/diagram styling, focus states, and responsive.
   ============================================================ */
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
.ms a:focus-visible, .ms .ms-btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

/* layout grids (named so breakpoints can collapse them) */
.ms-hero-row { display: grid; grid-template-columns: 1fr auto; gap: 64px; align-items: end; margin-top: 32px; }
.ms-feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }

/* real SVG art (replaces striped placeholders) */
.ms-art { width: 100%; height: auto; display: block; border: 1px solid var(--border); border-radius: 6px; background: var(--cream); }
.ms-art--plain { border: none; background: none; }

/* sticky-ish header */
.ms-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.92); backdrop-filter: blur(8px); }

.ms-skip { position: absolute; left: -9999px; }
.ms-skip:focus { left: 16px; top: 12px; background: var(--navy); color: #fff; padding: 8px 14px; border-radius: 4px; z-index: 100; }

/* details/summary FAQ (production, all expandable) */
.ms-faq-item summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: baseline; gap: 24px; }
.ms-faq-item summary::-webkit-details-marker { display: none; }
.ms-faq-item summary .toggle { transition: transform 150ms ease; }
.ms-faq-item[open] summary .toggle { transform: rotate(45deg); }

/* ---------- responsive ---------- */
@media (max-width: 920px) {
  .ms-wrap { padding: 0 24px; }
  .ms-section, .ms--editorial .ms-section { padding: 56px 0; }
  .ms-h1, .ms--editorial .ms-h1 { font-size: 40px; line-height: 1.1; }
  .ms-h2 { font-size: 28px; }
  .ms-lede { font-size: 17px; }
  .ms-hero-row { grid-template-columns: 1fr; gap: 28px; align-items: start; }
  .ms-feature-grid { grid-template-columns: 1fr; gap: 32px; }
  .ms-method { grid-template-columns: 1fr; gap: 32px; }
  .ms-who { grid-template-columns: 1fr; gap: 20px; }
  .ms-stats { grid-template-columns: 1fr; }
  .ms-stat + .ms-stat { border-left: none; border-top: 1px solid var(--border); }
  .ms-nav-links { gap: 16px; }
  .ms-nav-links a:not(.ms-btn) { display: none; }   /* keep brand + CTA on mobile */
  .ms-cta { flex-direction: column; align-items: flex-start; gap: 24px; padding: 36px 28px; }
  .ms-ledger-row { gap: 12px; }
  .ms-footer-grid { flex-direction: column; gap: 28px; }
}
@media (max-width: 520px) {
  .ms-h1, .ms--editorial .ms-h1 { font-size: 32px; }
  .ms-ledger-row { flex-direction: column; gap: 4px; }
}

/* button text color must beat `.ms a` / `.ms-nav-links a` anchor specificity (0,1,1) */
.ms .ms-btn { text-decoration: none; }
.ms .ms-btn--solid { color: #fff; }
.ms .ms-btn--ghost { color: var(--navy); }
.ms .ms-btn--onnavy { color: var(--navy); }

/* ---------- guide / article pages ---------- */
.ms-breadcrumb { font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 20px; }
.ms-breadcrumb a { color: var(--muted); text-decoration: none; }
.ms-breadcrumb a:hover { color: var(--navy); }
.ms-article-hero { border-bottom: 1px solid var(--border); padding: 56px 0 40px; }
.ms-article { max-width: 720px; padding: 48px 0 16px; }
.ms-article h2 { font-family: var(--serif); font-size: 26px; font-weight: 600; color: var(--ink); margin: 40px 0 14px; line-height: 1.25; }
.ms-article h3 { font-family: var(--serif); font-size: 20px; font-weight: 600; color: var(--ink); margin: 28px 0 10px; }
.ms-article p { font-size: 17px; line-height: 1.7; color: var(--body); margin: 0 0 18px; }
.ms-article ul { margin: 0 0 18px; padding-left: 22px; }
.ms-article li { font-size: 17px; line-height: 1.65; color: var(--body); margin-bottom: 8px; }
.ms-article strong { color: var(--ink); font-weight: 600; }
.ms-article .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.ms-article a { color: var(--navy); text-decoration: underline; text-underline-offset: 2px; }
.copy-stub { color: var(--muted); font-style: italic; border-left: 2px solid var(--gold); padding-left: 14px; }
.ms-article-cta { margin: 40px 0 8px; padding: 28px; background: var(--cream); border: 1px solid var(--border); border-radius: 6px; display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.ms-article-cta p { margin: 0; font-size: 16px; color: var(--ink); }

/* a11y: muted + gold-for-text must clear WCAG AA on white and cream */
.ms { --muted: #586573; --gold-ink: #8a6d1c; }
.ms .ms-stat .tag, .ms .ms-method-item .num { color: var(--gold-ink); }
.ms .ms-footer h3 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 0 0 12px; }