@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@500;600;700&family=Source+Serif+4:opsz,wght@8..60,400;8..60,500;8..60,600&display=swap');

:root {
  --canvas: #f7f7f3;
  --surface: #ffffff;
  --midnight: #101b34;
  --navy: #203a65;
  --signal: #b33f1c;
  --steel: #566177;
  --rule: #d7dbe1;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Archivo", Helvetica, sans-serif;
  --shell: min(1180px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--midnight); background: var(--canvas); font-family: var(--serif); font-size: 18px; line-height: 1.56; }
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--signal); outline-offset: 4px; }
.skip-link { position: fixed; z-index: 100; left: 12px; top: 12px; padding: 10px 14px; background: var(--midnight); color: white; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.shell { width: var(--shell); margin-inline: auto; }

.site-header { background: var(--midnight); color: white; }
.utility { display: flex; justify-content: space-between; gap: 24px; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.18); font: 600 11px/1.2 var(--sans); letter-spacing: .12em; text-transform: uppercase; }
.masthead { display: flex; align-items: center; justify-content: space-between; min-height: 84px; gap: 30px; }
.wordmark { display: flex; align-items: center; gap: 15px; text-decoration: none; font: 700 20px/1 var(--sans); letter-spacing: -.03em; }
.wordmark-mark { display: grid; place-items: center; width: 38px; height: 38px; background: var(--signal); color: white; font-size: 13px; letter-spacing: .02em; }
.wordmark small { display: block; margin-top: 7px; color: #aebbd0; font-size: 9px; letter-spacing: .14em; }
nav { display: flex; gap: 26px; font: 600 12px/1 var(--sans); }
nav a { color: #d9e0eb; text-decoration: none; }
nav a:hover { color: white; }

.hero { display: grid; grid-template-columns: 1.28fr .72fr; min-height: 650px; background: var(--surface); border-bottom: 1px solid var(--rule); }
.hero-main { display: flex; flex-direction: column; justify-content: center; padding: 82px max(48px, calc((100vw - 1180px) / 2)); padding-right: 72px; }
.eyebrow { margin: 0 0 18px; color: var(--signal); font: 700 11px/1.2 var(--sans); letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3 { font-family: var(--sans); text-wrap: balance; }
h1 { max-width: 760px; margin: 0; font-size: clamp(3.4rem, 6.4vw, 6.8rem); line-height: .92; letter-spacing: -.065em; }
.hero-main > p:not(.eyebrow) { max-width: 650px; margin: 30px 0 0; color: #526078; font-size: 22px; line-height: 1.5; text-wrap: pretty; }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 20px; background: var(--signal); color: white; border-radius: 6px; text-decoration: none; font: 700 12px/1 var(--sans); }
.text-link { color: var(--navy); font: 700 12px/1.4 var(--sans); text-decoration-thickness: 1px; text-underline-offset: 5px; }
.hero-panel { display: flex; flex-direction: column; justify-content: space-between; padding: 72px 52px 52px; background: var(--navy); color: white; }
.panel-label { margin: 0; color: #b9c8df; font: 700 10px/1.2 var(--sans); letter-spacing: .15em; text-transform: uppercase; }
.hero-panel h2 { margin: 20px 0 34px; font-size: 28px; line-height: 1.08; letter-spacing: -.03em; }
.decision-list { display: grid; gap: 1px; margin: 0; padding: 0; list-style: none; background: rgba(255,255,255,.2); }
.decision-list li { display: grid; grid-template-columns: 26px 1fr; gap: 14px; padding: 18px; background: var(--navy); font: 500 14px/1.4 var(--sans); }
.decision-list span { color: #aebbd0; font-size: 10px; }
.panel-foot { margin: 34px 0 0; color: #bac7da; font-size: 14px; }

.section { padding: 92px 0; }
.section-head { display: grid; grid-template-columns: .65fr 1.35fr; gap: 54px; align-items: start; padding-bottom: 40px; border-bottom: 1px solid var(--rule); }
.section-code { color: var(--steel); font: 700 11px/1.2 var(--sans); letter-spacing: .13em; text-transform: uppercase; }
.section-head h2 { margin: 0; max-width: 780px; font-size: clamp(2.2rem, 4vw, 4.6rem); line-height: .98; letter-spacing: -.055em; }
.section-head p { max-width: 650px; margin: 24px 0 0; color: #59657a; }

.route-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 34px; }
.route { min-height: 265px; padding: 24px; background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; }
.route:first-child { background: var(--midnight); color: white; border-color: var(--midnight); }
.route-number { margin: 0 0 42px; color: var(--steel); font: 700 10px/1 var(--sans); letter-spacing: .12em; }
.route:first-child .route-number { color: #9faac0; }
.route h3 { margin: 0 0 12px; font-size: 22px; line-height: 1.1; letter-spacing: -.03em; }
.route p { margin: 0; color: #626f82; font-size: 16px; }
.route:first-child p { color: #c3cbda; }

.matrix-wrap { background: var(--midnight); color: white; }
.matrix { padding: 90px 0; }
.matrix .section-head { border-color: rgba(255,255,255,.17); }
.matrix .section-head p { color: #b9c2d2; }
.matrix-table { margin-top: 36px; border: 1px solid rgba(255,255,255,.2); border-radius: 12px; overflow: hidden; }
.matrix-row { display: grid; grid-template-columns: 1.15fr repeat(3, 1fr); }
.matrix-row > * { padding: 18px 20px; border-right: 1px solid rgba(255,255,255,.16); border-bottom: 1px solid rgba(255,255,255,.16); }
.matrix-row > *:last-child { border-right: 0; }
.matrix-row:last-child > * { border-bottom: 0; }
.matrix-row.header { background: rgba(255,255,255,.07); color: #b8c2d2; font: 700 10px/1.2 var(--sans); letter-spacing: .12em; text-transform: uppercase; }
.matrix-row strong { font: 600 14px/1.3 var(--sans); }
.matrix-row span { color: #c8d0dc; font-size: 15px; }

.process-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 76px; margin-top: 42px; }
.process-intro h2 { margin: 0; font-size: 42px; line-height: 1; letter-spacing: -.045em; }
.process-intro p { color: #59657a; }
.steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--rule); }
.steps li { display: grid; grid-template-columns: 56px 1fr; gap: 18px; padding: 24px 0; border-bottom: 1px solid var(--rule); }
.steps span { color: var(--signal); font: 700 11px/1 var(--sans); }
.steps strong { display: block; margin-bottom: 5px; font: 600 16px/1.2 var(--sans); }
.steps small { color: #647086; font-size: 16px; }

.related { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; margin-bottom: 92px; padding: 52px; background: #e7ebf0; border-radius: 14px; }
.related h2 { margin: 0; max-width: 490px; font-size: 38px; line-height: 1; letter-spacing: -.045em; }
.related p { margin-top: 0; color: #4d5a70; }

footer { padding: 58px 0; background: white; border-top: 1px solid var(--rule); }
.footer-grid { display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 54px; }
.footer-title, .footer-label { margin: 0 0 12px; font: 700 12px/1.2 var(--sans); text-transform: uppercase; letter-spacing: .1em; }
footer p { margin: 0; color: #657086; font-size: 14px; }

.toc { display: block; margin-top: 56px; margin-bottom: 72px; padding: 28px 30px; border: 1px solid var(--rule); border-radius: 10px; background: white; }
.toc .eyebrow { margin-bottom: 18px; }
.toc ol { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; padding: 0; list-style: none; counter-reset: toc; }
.toc li { counter-increment: toc; border-top: 1px solid var(--rule); }
.toc a { display: grid; grid-template-columns: 28px 1fr; gap: 8px; padding: 12px 8px; color: var(--navy); font: 600 12px/1.35 var(--sans); text-decoration: none; }
.toc a::before { content: counter(toc, decimal-leading-zero); color: var(--signal); font-size: 9px; letter-spacing: .08em; }
.toc a:hover { background: #f1f3f6; }

.comparison { padding-top: 8px; }
.comparison-scroll { margin-top: 34px; overflow-x: auto; border: 1px solid var(--rule); border-radius: 10px; }
.comparison table { width: 100%; min-width: 760px; border-collapse: collapse; background: white; }
.comparison th, .comparison td { padding: 18px 20px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.comparison tr:last-child > * { border-bottom: 0; }
.comparison tr > *:last-child { border-right: 0; }
.comparison thead th { background: var(--midnight); color: white; font: 700 10px/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; }
.comparison tbody th { width: 20%; color: var(--signal); font: 700 12px/1.4 var(--sans); }
.comparison td { width: 40%; color: #59657a; font-size: 15px; }

.footer-directory { display: block; margin-top: 48px; padding-top: 38px; border-top: 1px solid var(--rule); }
.footer-directory h2 { margin: 0 0 28px; font-size: 30px; }
.footer-link-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 34px 28px; }
.footer-link-grid ul { margin: 0; padding: 0; list-style: none; }
.footer-link-grid li { margin: 8px 0; }
.footer-link-grid a { color: #657086; font: 500 12px/1.35 var(--sans); text-underline-offset: 3px; }

/* Full buyer-research corpus */
.route { display: block; color: inherit; text-decoration: none; transition: transform 180ms ease, box-shadow 180ms ease; }
.route:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(16,27,52,.08); }
.route > span { display: block; margin-top: 24px; color: var(--signal); font: 700 11px/1 var(--sans); }
.route:first-child > span { color: #ffb59b; }
.guide-index { display: grid; grid-template-columns: repeat(2,1fr); margin: 62px 0 0; padding: 0; border-top: 1px solid var(--midnight); list-style: none; }
.guide-index li { border-bottom: 1px solid var(--rule); }
.guide-index li:nth-child(odd) { border-right: 1px solid var(--rule); }
.guide-index a { display: grid; grid-template-columns: 90px 1fr auto; gap: 18px; align-items: baseline; padding: 18px 20px; text-decoration: none; }
.guide-index small, .guide-index span { color: var(--steel); font: 700 10px/1.2 var(--sans); letter-spacing: .08em; text-transform: uppercase; }
.guide-index strong { font: 600 16px/1.25 var(--sans); }
.guide-index a:hover strong { color: var(--signal); }
.article-hero { padding: 66px 0 78px; }
.crumb { display: flex; gap: 10px; margin-bottom: 58px; color: var(--steel); font: 700 10px/1.2 var(--sans); letter-spacing: .1em; text-transform: uppercase; }
.crumb a { text-underline-offset: 4px; }
.article-hero h1 { max-width: 1040px; }
.article-hero > p:not(.eyebrow) { max-width: 760px; margin: 30px 0 0; color: #58657b; font-size: 22px; }
.entity-statement {
  max-width: 760px;
  margin-top: 1.25rem;
  padding: 1rem 1.15rem;
  border-left: 4px solid var(--signal);
  background: rgba(179, 63, 28, .1);
}
.entity-line { margin: 1rem 0; }
.brief { padding: 70px 0; background: white; border-block: 1px solid var(--rule); }
.brief-grid { display: grid; grid-template-columns: .55fr 1.45fr; gap: 58px; }
.brief h2 { margin: 0 0 18px; font-size: 48px; line-height: 1; letter-spacing: -.045em; }
.brief-grid > div > p { max-width: 820px; margin: 0; font-size: 25px; line-height: 1.5; }
.signal-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; margin: 34px 0 0; }
.signal-grid > div { min-height: 220px; padding: 28px; background: white; border: 1px solid var(--rule); border-radius: 10px; }
.signal-grid dt { font: 700 22px/1.1 var(--sans); letter-spacing: -.03em; }
.signal-grid dd { margin: 42px 0 0; color: #5d6980; font-size: 16px; }
.risk-grid { display: grid; grid-template-columns: repeat(3,1fr); margin: 36px 0 0; padding: 0; border: 1px solid rgba(255,255,255,.2); border-radius: 12px; overflow: hidden; list-style: none; }
.risk-grid li { min-height: 210px; padding: 24px; border-right: 1px solid rgba(255,255,255,.2); color: #d1d8e4; }
.risk-grid li:last-child { border-right: 0; }
.risk-grid span { display: block; margin-bottom: 64px; color: #ff9d7c; font: 700 11px/1 var(--sans); }
.question-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 70px; }
.question-layout h2 { margin: 0; font-size: 54px; line-height: .95; letter-spacing: -.05em; }
.question-layout > div > p:last-child { color: #5f6c82; }
.question-layout ol { margin: 0; padding: 0; border-top: 1px solid var(--rule); list-style: none; }
.question-layout li { display: grid; grid-template-columns: 55px 1fr; gap: 18px; padding: 21px 0; border-bottom: 1px solid var(--rule); font: 500 21px/1.35 var(--sans); }
.question-layout strong { color: var(--signal); font-size: 11px; }
.provider { width: var(--shell); margin-inline: auto; }
.sources { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; padding: 80px 0; border-top: 1px solid var(--rule); }
.sources h2 { margin: 18px 0; font-size: 44px; line-height: 1; }
.sources > div > p:last-child { color: #5f6c82; }
.sources ol { margin: 0; padding: 0; list-style: none; }
.sources li { display: flex; justify-content: space-between; gap: 20px; padding: 17px 0; border-top: 1px solid var(--rule); }
.sources li small { color: var(--steel); font: 700 9px/1.5 var(--sans); letter-spacing: .08em; text-transform: uppercase; }
.sources a { text-underline-offset: 4px; }
.more { padding: 82px 0 105px; border-top: 1px solid var(--rule); }
.more > h2 { margin: 0 0 38px; font-size: 52px; line-height: 1; }
.more > div { display: grid; grid-template-columns: repeat(3,1fr); }
.more a { display: flex; min-height: 210px; padding: 24px; flex-direction: column; border: 1px solid var(--rule); border-right: 0; background: white; text-decoration: none; }
.more a:last-child { border-right: 1px solid var(--rule); }
.more small { color: var(--steel); font: 700 10px/1 var(--sans); text-transform: uppercase; }
.more strong { margin-top: 44px; font: 600 22px/1.1 var(--sans); }
.more span { margin-top: auto; color: var(--signal); font: 700 11px/1 var(--sans); }
.more a:hover { background: #f1f3f6; }

@media (max-width: 900px) {
  :root { --shell: min(100% - 32px, 720px); }
  .hero { grid-template-columns: 1fr; }
  .hero-main { padding: 72px 32px; }
  .hero-panel { padding: 44px 32px; }
  .section-head, .process-grid, .related, .footer-grid, .brief-grid, .question-layout, .sources { grid-template-columns: 1fr; gap: 30px; }
  .route-grid, .signal-grid { grid-template-columns: 1fr 1fr; }
  .toc ol, .footer-link-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .risk-grid, .more > div { grid-template-columns: 1fr; }
  .risk-grid li { min-height: 150px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.2); }
  .risk-grid li:last-child { border-bottom: 0; }
  .risk-grid span { margin-bottom: 32px; }
  .more a { min-height: 160px; border-right: 1px solid var(--rule); border-bottom: 0; }
  .more a:last-child { border-bottom: 1px solid var(--rule); }
}

@media (max-width: 620px) {
  body { font-size: 17px; }
  .utility p:last-child, .masthead nav { display: none; }
  .masthead { min-height: 72px; }
  .wordmark { font-size: 16px; }
  .hero-main { padding: 62px 20px; }
  h1 { font-size: clamp(3rem, 15vw, 4.6rem); }
  .hero-main > p:not(.eyebrow) { font-size: 19px; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .section { padding: 70px 0; }
  .route-grid, .signal-grid, .guide-index { grid-template-columns: 1fr; }
  .route { min-height: 220px; }
  .guide-index li:nth-child(odd) { border-right: 0; }
  .guide-index a { grid-template-columns: 72px 1fr; gap: 12px; padding-inline: 0; }
  .guide-index a > span { display: none; }
  .article-hero { padding: 48px 0 58px; }
  .crumb { margin-bottom: 40px; }
  .article-hero > p:last-child { font-size: 19px; }
  .brief { padding: 54px 0; }
  .brief h2 { font-size: 38px; }
  .brief-grid > div > p { font-size: 20px; }
  .signal-grid > div { min-height: 0; }
  .signal-grid dd { margin-top: 24px; }
  .question-layout h2, .more > h2 { font-size: 40px; }
  .question-layout li { font-size: 18px; }
  .sources li { align-items: flex-start; flex-direction: column; }
  .matrix-row { grid-template-columns: 1.1fr 1fr; }
  .matrix-row > *:nth-child(3), .matrix-row > *:nth-child(4) { display: none; }
  .related { padding: 34px 24px; }
  .toc { display: block; margin-top: 40px; margin-bottom: 56px; padding: 22px 18px; }
  .toc ol, .footer-link-grid { grid-template-columns: 1fr; }
  .comparison-scroll { margin-inline: -16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}