:root {
  color-scheme: light;
  --canvas: #f6f4ee;
  --surface: #fcfbf7;
  --strong: #ffffff;
  --ink: #18202b;
  --muted: #5e6874;
  --line: #d8d9d3;
  --navy: #162f47;
  --accent: #2459c4;
  --accent-soft: #e8eefc;
  --radius: 16px;
  --small-radius: 9px;
  --max: 1240px;
  --shadow: 0 28px 80px rgba(22, 47, 71, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--canvas);
  color: var(--ink);
  font-family: "Aptos", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { letter-spacing: -0.04em; line-height: 1.04; text-wrap: balance; }
h1 { margin-bottom: 24px; font-size: clamp(3.15rem, 6.4vw, 6.7rem); font-weight: 610; }
h2 { margin-bottom: 20px; font-size: clamp(2.3rem, 4.7vw, 4.8rem); font-weight: 610; }
h3 { margin-bottom: 12px; font-size: clamp(1.25rem, 2.25vw, 1.7rem); font-weight: 620; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
a { touch-action: manipulation; -webkit-tap-highlight-color: rgba(36, 89, 196, 0.18); }
section[id] { scroll-margin-top: 96px; }
.shell { width: min(var(--max), calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 100; padding: 10px 14px; transform: translateY(-160%); background: var(--navy); color: white; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(216, 217, 211, 0.9); background: rgba(246, 244, 238, 0.94); backdrop-filter: blur(18px); }
.nav-row { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { display: block; width: 40px; height: 40px; flex: 0 0 40px; overflow: hidden; }
.brand-mark img { display: block; width: 100%; height: 100%; object-fit: contain; transform: scale(1.5); transform-origin: center; }
.brand strong, .brand small { display: block; line-height: 1.2; }
.brand strong { font-size: .98rem; }
.brand small { color: var(--muted); font-size: .68rem; }
.site-nav { display: flex; gap: 28px; color: var(--muted); font-size: .84rem; }
.site-nav a:hover, .text-link:hover, .site-footer a:hover { color: var(--accent); }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 21px; border: 1px solid var(--navy); border-radius: var(--small-radius); background: var(--navy); color: white; font-size: .88rem; font-weight: 750; }
.button:hover { background: #0e253a; }
.button-small { min-height: 42px; padding-inline: 17px; }
.button-secondary { background: transparent; color: var(--navy); }
.button-secondary:hover { background: rgba(22, 47, 71, 0.05); }
.hero { min-height: 720px; display: grid; grid-template-columns: minmax(0, 1.16fr) minmax(360px, .84fr); align-items: center; gap: 74px; padding-block: 88px 104px; }
.hero-copy { max-width: 760px; }
.hero h1 { max-width: 9.4ch; }
.eyebrow, .card-kicker { color: var(--accent); font-size: .76rem; font-weight: 790; letter-spacing: .09em; text-transform: uppercase; }
.index, .label, .case-label, .case-decision { color: var(--navy); font-size: clamp(.9rem, 1.05vw, 1rem); font-weight: 800; letter-spacing: .065em; line-height: 1.35; text-transform: uppercase; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 22px; padding: 6px 9px; border: 1px solid var(--line); border-radius: var(--small-radius); color: var(--muted); }
.eyebrow::before { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); content: ""; }
.lede { max-width: 58ch; margin-bottom: 31px; color: var(--muted); font-size: clamp(1.05rem, 1.55vw, 1.3rem); }
.action-row { display: flex; flex-wrap: wrap; gap: 12px; }
.decision-card { padding: 48px; border-radius: var(--radius); background: var(--navy); color: white; box-shadow: var(--shadow); }
.decision-card .card-kicker { margin-bottom: 12px; color: #bfd0f5; }
.decision-card h2 { max-width: 9.5ch; font-size: clamp(2.1rem, 3.5vw, 3.35rem); }
.decision-card dl { margin: 34px 0 0; border-block: 1px solid rgba(255, 255, 255, .22); }
.decision-card dl div { display: grid; grid-template-columns: 105px 1fr; gap: 18px; padding: 20px 0; border-bottom: 1px solid rgba(255, 255, 255, .16); }
.decision-card dl div:last-child { border-bottom: 0; }
.decision-card dt { color: #bfd0f5; font-size: .66rem; font-weight: 770; letter-spacing: .08em; text-transform: uppercase; }
.decision-card dd { margin: 0; font-size: .94rem; font-weight: 650; line-height: 1.42; }
.card-note { margin: 22px 0 0; color: rgba(255, 255, 255, .64); font-size: .72rem; }
.section { padding-block: 106px; }
.section-rule { border-top: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: minmax(0, .44fr) minmax(0, .56fr); gap: 58px; margin-bottom: 56px; }
.section-heading p { max-width: 58ch; color: var(--muted); }
.path-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.path-card { display: block; padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--strong); box-shadow: none; transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease; }
.path-card:hover, .path-card:focus-visible, .path-card:active { border-color: var(--accent); box-shadow: 0 22px 48px rgba(36, 89, 196, .16); }
.path-card:hover, .path-card:focus-visible { transform: translateY(-4px); }
.path-card:active { box-shadow: 0 10px 24px rgba(36, 89, 196, .14); transform: translateY(-1px); }
.path-card .index { margin-bottom: 52px; color: var(--accent); }
.path-card > p:not(.index, .label) { color: var(--muted); }
.path-card .label { margin: 24px 0 5px; }
.text-link { display: inline-flex; margin-top: 18px; color: var(--accent); font-size: .88rem; font-weight: 760; }
.method-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.method-grid article { min-height: 220px; padding: 36px 29px; border-right: 1px solid var(--line); }
.method-grid article:last-child { border-right: 0; }
.method-grid .index { margin-bottom: 18px; color: var(--accent); }
.method-grid article > p:last-child { color: var(--muted); }
.output-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 52px; }
.output-grid article { padding: 27px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--strong); }
.output-grid article > p:last-child { margin-bottom: 0; color: var(--muted); font-size: .9rem; }
.case-list { border-top: 1px solid var(--line); }
.case-row { display: grid; grid-template-columns: minmax(180px, .7fr) minmax(0, 1.4fr) minmax(168px, .5fr); gap: 28px; align-items: start; padding: 34px 0; border-bottom: 1px solid var(--line); }
.case-row h3 { max-width: 24ch; }
.case-row div > p { max-width: 52ch; margin-bottom: 0; color: var(--muted); }
.case-label { margin-bottom: 0; color: var(--accent); }
.case-decision { margin-bottom: 0; text-align: right; }
.about-grid { display: grid; grid-template-columns: minmax(0, .45fr) minmax(0, .55fr); gap: 80px; align-items: start; }
.about-copy { max-width: 620px; color: var(--muted); font-size: 1.08rem; }
.site-footer { padding-block: 54px; color: var(--muted); font-size: .82rem; }
.footer-row { display: flex; flex-direction: column; align-items: center; gap: 20px; text-align: center; }
.footer-row p { margin-bottom: 0; color: var(--accent); font-size: 1.08rem; font-weight: 760; line-height: 1.45; }
.footer-row div { display: flex; justify-content: center; gap: 22px; }

@media (max-width: 960px) {
  .site-nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: 0; gap: 42px; }
  .decision-card { max-width: 650px; }
}

@media (max-width: 720px) {
  .shell { width: min(100% - 32px, var(--max)); }
  .nav-row { min-height: 70px; }
  .nav-row > .button { display: none; }
  .hero { padding-block: 58px 72px; }
  .hero h1 { max-width: 10.5ch; }
  .action-row, .action-row .button { width: 100%; }
  .decision-card { padding: 30px 25px; }
  .decision-card dl div { grid-template-columns: 82px 1fr; }
  .section { padding-block: 76px; }
  .section-heading, .path-grid, .method-grid, .output-grid, .about-grid { grid-template-columns: 1fr; }
  .section-heading { gap: 8px; }
  .method-grid article { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .method-grid article:last-child { border-bottom: 0; }
  .case-row { grid-template-columns: 1fr; gap: 14px; padding-block: 28px; }
  .case-decision { text-align: left; }
  .about-grid { gap: 16px; }
  .footer-row, .footer-row div { flex-direction: column; }
  .footer-row { gap: 20px; }
  .question-hero { padding-block: 62px 72px; }
  .question-table-wrap { overflow: visible; border: 0; background: transparent; }
  .question-table { min-width: 0; }
  .question-table, .question-table tbody, .question-table tr, .question-table td { display: block; width: 100%; }
  .question-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .question-table tr { margin-bottom: 14px; border: 1px solid var(--line); border-radius: var(--small-radius); background: var(--strong); }
  .question-table tr:last-child { margin-bottom: 0; }
  .question-table td { padding: 16px 18px; border-top: 1px solid var(--line); border-right: 0; }
  .question-table td:first-child { border-top: 0; }
  .question-table td::before { display: block; margin-bottom: 6px; color: var(--accent); content: attr(data-label); font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
  .scenario { padding: 28px 24px; }
  .decision-outcomes { grid-template-columns: 1fr; margin-top: 38px; }
  .test-steps li { padding-left: 46px; }
  .question-entry { padding: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .path-card { transition: none; }
  .path-card:hover, .path-card:focus-visible, .path-card:active { transform: none; }
}

/* Question pages: shared brand tokens with a reading-first single-column layout. */
.question-hero { max-width: 940px; padding-block: 102px 110px; }
.question-hero h1 { max-width: 12ch; margin-bottom: 30px; font-size: clamp(3rem, 6.8vw, 6.3rem); }
.question-intro { max-width: 74ch; margin-bottom: 20px; color: var(--muted); font-size: clamp(1.08rem, 1.7vw, 1.32rem); }
.question-intro:last-child { margin-bottom: 0; }
.question-section { max-width: 940px; }
.question-heading { max-width: 680px; margin-bottom: 38px; }
.question-heading h2, .question-prose h2, .scenario h2 { max-width: 16ch; }
.question-prose > p:not(.eyebrow), .scenario > p { max-width: 72ch; color: var(--muted); font-size: 1.06rem; }
.question-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--strong); }
.question-table { width: 100%; min-width: 690px; border-collapse: collapse; text-align: left; }
.question-table th, .question-table td { padding: 24px; vertical-align: top; border-right: 1px solid var(--line); }
.question-table th:last-child, .question-table td:last-child { border-right: 0; }
.question-table th { color: var(--accent); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; }
.question-table td { color: var(--muted); border-top: 1px solid var(--line); }
.question-note { max-width: 72ch; margin: 26px 0 0; color: var(--muted); }
.scenario { padding: 42px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--strong); }
.scenario-label { margin-bottom: 24px; color: var(--accent); font-size: .8rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.test-steps { max-width: 72ch; margin: 0; padding: 0; list-style: none; counter-reset: test-steps; }
.test-steps li { position: relative; margin-bottom: 22px; padding-left: 52px; color: var(--muted); }
.test-steps li::before { position: absolute; left: 0; top: 0; width: 30px; height: 30px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--accent); content: counter(test-steps, decimal-leading-zero); counter-increment: test-steps; font-size: .68rem; font-weight: 800; }
.decision-outcomes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 52px; }
.decision-outcomes article { padding: 27px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--strong); }
.decision-outcomes .index { margin-bottom: 16px; color: var(--accent); }
.decision-outcomes article > p:last-child { margin-bottom: 0; color: var(--muted); font-size: .94rem; }
.question-entry { max-width: 76ch; margin-top: 34px; padding: 28px 30px; border-left: 4px solid var(--accent); background: var(--accent-soft); }
.question-entry p { margin-bottom: 0; color: var(--navy); }
.question-entry a { color: var(--accent); font-weight: 760; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.question-link-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.question-link-grid a { display: grid; gap: 8px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--strong); }
.question-link-grid a:hover, .question-link-grid a:focus-visible { border-color: var(--accent); }
.question-link-grid span { color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.question-link-grid strong { color: var(--navy); font-size: 1.08rem; line-height: 1.35; }

@media (max-width: 720px) {
  .question-hero { padding-block: 62px 72px; }
  .question-table-wrap { overflow: visible; border: 0; background: transparent; }
  .question-table { min-width: 0; }
  .question-table, .question-table tbody, .question-table tr, .question-table td { display: block; width: 100%; }
  .question-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .question-table thead th { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; }
  .question-table tr { margin-bottom: 14px; border: 1px solid var(--line); border-radius: var(--small-radius); background: var(--strong); }
  .question-table tr:last-child { margin-bottom: 0; }
  .question-table td { padding: 16px 18px; border-top: 1px solid var(--line); border-right: 0; }
  .question-table td:first-child { border-top: 0; }
  .question-table td::before { display: block; margin-bottom: 6px; color: var(--accent); content: attr(data-label); font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
  .scenario { padding: 28px 24px; }
  .decision-outcomes { grid-template-columns: 1fr; }
  .test-steps li { padding-left: 46px; }
  .question-entry { padding: 24px; }
  .question-link-grid { grid-template-columns: 1fr; }
}