:root {
  --paper: #f7f1e8;
  --paper-strong: #efe5d8;
  --ink: #111827;
  --muted: #5c6470;
  --line: #cfc5b7;
  --blue: #1d4ed8;
  --blue-dark: #163b9f;
  --red: #e23d2d;
  --yellow: #f3e45c;
  --sky: #dce7ff;
  --rose: #f2c4ba;
  --white: #fffdf8;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Arial, Helvetica, sans-serif; line-height: 1.5; }
a { color: inherit; }
button, select { font: inherit; }
.site-header { max-width: var(--max); margin: 0 auto; min-height: 76px; padding: 18px 28px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: baseline; gap: 12px; text-decoration: none; }
.brand-name { font-weight: 900; font-size: 20px; }
.brand-note { color: var(--muted); font-size: 12px; }
.nav-shell summary { display: none; }
.nav-shell nav { display: flex; gap: 24px; }
.nav-shell a { text-decoration: none; font-size: 14px; padding-bottom: 4px; border-bottom: 2px solid transparent; }
.nav-shell a[aria-current="page"] { border-color: var(--red); }
main { overflow: hidden; }
.hero, .route-strip, .system-section, .week-section, .featured-section, .signal-section, .corpus-section, .evidence-section, .package-cta, .page-hero, .builder-page, .catalog, .methodology, .source-register, .package-grid, .transfer-note, .article-page { max-width: var(--max); margin: 0 auto; padding-left: 28px; padding-right: 28px; }
.hero { min-height: 650px; display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(360px, .85fr); gap: 68px; align-items: center; padding-top: 66px; padding-bottom: 76px; }
.eyebrow { margin: 0 0 14px; color: var(--red); text-transform: uppercase; font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.hero h1, .page-hero h1, .article-hero h1 { margin: 0; max-width: 900px; font-family: Impact, "Arial Narrow", Arial, sans-serif; font-size: clamp(58px, 7.8vw, 112px); line-height: .9; letter-spacing: -.02em; text-transform: uppercase; font-weight: 900; }
.hero h1 em { color: var(--blue); font-style: normal; }
.hero-deck { max-width: 690px; margin: 28px 0; font-size: 19px; }
.primary-action, .secondary-action { display: inline-block; padding: 16px 22px; background: var(--blue); color: white; text-decoration: none; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; border: 0; cursor: pointer; }
.primary-action:hover, .route-builder button:hover, .filters button:hover { background: var(--blue-dark); }
.secondary-action { background: transparent; color: var(--blue); border: 1px solid var(--blue); }
.hero-proof { margin-top: 20px; color: var(--muted); font-size: 13px; }
.hero-panel { background: var(--ink); color: white; padding: 30px; transform: rotate(-1deg); box-shadow: 18px 18px 0 var(--sky); }
.profile-head { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.25); }
.profile-head span, .profile-task span { color: #a9c2ff; font-size: 11px; text-transform: uppercase; font-weight: 800; letter-spacing: .08em; }
.profile-head strong { font-size: 12px; }
.skill-profile { margin: 22px 0; }
.skill-profile > div { margin-bottom: 17px; }
.skill-profile dt { margin-bottom: 5px; font-size: 13px; }
.skill-profile dd { display: grid; grid-template-columns: 1fr 28px; gap: 10px; align-items: center; margin: 0; }
.skill-profile meter { width: 100%; height: 12px; background: rgba(255,255,255,.15); }
.skill-profile meter::-webkit-meter-bar { background: rgba(255,255,255,.15); border: 0; border-radius: 0; }
.skill-profile meter::-webkit-meter-optimum-value { background: var(--yellow); }
.skill-profile meter::-moz-meter-bar { background: var(--yellow); }
.skill-profile dd span { color: var(--yellow); font-weight: 800; font-size: 12px; text-align: right; }
.profile-task { padding: 20px; background: var(--blue); }
.profile-task strong { display: block; margin-top: 8px; font-size: 18px; line-height: 1.15; }
.hero-panel > p { margin: 18px 0 0; color: #bcc5d3; font-size: 12px; }
.route-strip { display: grid; grid-template-columns: .85fr 1.5fr; gap: 48px; padding-top: 48px; padding-bottom: 48px; background: var(--blue); color: white; }
.route-strip .eyebrow { color: var(--yellow); }
.route-strip h2 { margin: 0; font-size: clamp(34px, 4.2vw, 54px); line-height: .94; }
.route-scenarios { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid rgba(255,255,255,.35); }
.route-scenarios a { min-height: 230px; padding: 22px; display: flex; flex-direction: column; text-decoration: none; border-right: 1px solid rgba(255,255,255,.35); }
.route-scenarios a:last-child { border: 0; }
.route-scenarios a:hover { background: rgba(255,255,255,.1); }
.route-scenarios span, .route-scenarios small { color: #c9d7ff; font-size: 11px; text-transform: uppercase; }
.route-scenarios strong { margin: auto 0; font-size: 19px; line-height: 1.12; }
.system-section, .week-section, .featured-section, .signal-section, .evidence-section, .source-register { padding-top: 70px; padding-bottom: 80px; border-top: 1px solid var(--line); }
.section-heading { max-width: 760px; margin-bottom: 40px; }
.section-heading h2, .corpus-copy h2, .package-cta h2, .methodology h2, .transfer-note h2, .related h2 { margin: 0 0 12px; font-size: clamp(34px, 5vw, 62px); line-height: .98; letter-spacing: -.03em; }
.section-heading > p:last-child { color: var(--muted); }
.system-line { height: 1px; background: var(--ink); margin-bottom: 28px; }
.cluster-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.cluster-grid a { min-height: 180px; padding: 22px; background: var(--paper); text-decoration: none; display: flex; flex-direction: column; border-top: 5px solid var(--cluster-color); }
.cluster-grid a:hover { background: var(--white); }
.cluster-grid span { color: var(--muted); font-size: 12px; }
.cluster-grid strong { margin: auto 0 18px; font-size: 22px; line-height: 1.08; }
.cluster-grid small { color: var(--muted); }
.week-section { background: var(--ink); color: white; max-width: none; padding-left: max(28px, calc((100vw - var(--max)) / 2 + 28px)); padding-right: max(28px, calc((100vw - var(--max)) / 2 + 28px)); }
.week-section .section-heading > p:last-child { color: #b9c1cd; }
.week-grid { max-width: calc(var(--max) - 56px); margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); border: 1px solid rgba(255,255,255,.25); }
.week-grid li { min-height: 245px; padding: 22px; display: flex; flex-direction: column; border-right: 1px solid rgba(255,255,255,.25); }
.week-grid li:last-child { border: 0; background: var(--red); }
.week-grid span { color: var(--yellow); font-family: Impact, "Arial Narrow", sans-serif; font-size: 38px; }
.week-grid strong { margin-top: auto; font-size: 18px; }
.week-grid p { margin: 8px 0 0; color: #c7ced9; font-size: 13px; }
.week-grid li:last-child p { color: white; }
.signal-section { background: linear-gradient(90deg, rgba(226,61,45,.06), rgba(29,78,216,.06)); max-width: none; padding-left: max(28px, calc((100vw - var(--max)) / 2 + 28px)); padding-right: max(28px, calc((100vw - var(--max)) / 2 + 28px)); }
.signal-grid { max-width: calc(var(--max) - 56px); display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px 42px; }
.signal-grid article { display: grid; grid-template-columns: 32px 1fr; align-content: start; }
.signal-grid span { color: var(--red); font-size: 28px; font-weight: 800; grid-row: span 2; }
.signal-grid h3 { margin: 0 0 6px; font-size: 16px; }
.signal-grid p { margin: 0; color: var(--muted); font-size: 13px; }
.featured-section { background: var(--paper-strong); }
.featured-grid { display: grid; grid-template-columns: 1.15fr .85fr .85fr; gap: 16px; }
.featured-grid a { min-height: 360px; padding: 28px; border-top: 7px solid var(--cluster-color); background: var(--white); text-decoration: none; display: flex; flex-direction: column; transition: transform .15s ease; }
.featured-grid a:first-child { background: var(--sky); }
.featured-grid a:hover { transform: translateY(-5px); }
.featured-grid > a > span { color: var(--red); font-size: 11px; text-transform: uppercase; font-weight: 800; }
.featured-grid h3 { margin: 26px 0 12px; font-size: clamp(28px, 3vw, 42px); line-height: .96; }
.featured-grid p { color: var(--muted); }
.featured-grid a > div { margin-top: auto; padding-top: 28px; display: flex; justify-content: space-between; gap: 18px; border-top: 1px solid var(--line); }
.featured-grid b { color: var(--blue); }
.corpus-section { display: grid; grid-template-columns: 1fr 1fr; min-height: 520px; padding-left: 0; padding-right: 0; }
.corpus-stats { display: grid; grid-template-columns: 1fr; }
.corpus-stats div { padding: 30px 38px; display: flex; align-items: center; gap: 22px; border-bottom: 1px solid rgba(255,255,255,.35); background: var(--red); color: white; }
.corpus-stats div:nth-child(2) { background: #f1c7bc; color: var(--ink); }
.corpus-stats div:nth-child(3) { background: var(--ink); }
.corpus-stats strong { font-family: Impact, "Arial Narrow", sans-serif; font-size: 72px; font-weight: 400; }
.corpus-stats span { max-width: 150px; font-weight: 800; text-transform: uppercase; font-size: 13px; }
.corpus-copy { padding: 72px 56px; align-self: center; }
.corpus-copy p { max-width: 500px; }
.text-link { color: var(--blue); font-weight: 800; text-underline-offset: 4px; }
.evidence-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 32px; }
.evidence-grid article { padding: 24px; border-right: 1px solid var(--line); }
.evidence-grid article:last-child { border: 0; }
.evidence-grid h3 { margin: 0 0 10px; }
.evidence-grid p { margin: 0; color: var(--muted); font-size: 14px; }
.package-cta { margin-top: 0; margin-bottom: 0; min-height: 360px; display: flex; align-items: center; justify-content: space-between; gap: 40px; color: white; background: var(--ink); padding-top: 62px; padding-bottom: 62px; }
.package-cta > div { max-width: 700px; }
.package-cta .eyebrow { color: #ff8274; }
.site-footer { max-width: var(--max); margin: 0 auto; padding: 42px 28px; display: grid; grid-template-columns: 1fr auto; gap: 26px; border-top: 1px solid var(--line); }
.site-footer p { color: var(--muted); margin: 6px 0; }
.site-footer > div:nth-child(2) { display: flex; gap: 18px; }
.footer-limit { grid-column: 1 / -1; font-size: 12px; }
.page-hero { padding-top: 82px; padding-bottom: 72px; border-bottom: 1px solid var(--line); }
.compact-hero h1, .asset-hero h1 { font-size: clamp(54px, 7vw, 96px); }
.page-hero > p:not(.eyebrow) { max-width: 720px; font-size: 18px; }
.page-hero .primary-action { margin-top: 18px; }
.builder-page { padding-top: 56px; padding-bottom: 90px; }
.route-builder, .filters { display: grid; grid-template-columns: repeat(3, 1fr) auto; gap: 14px; align-items: end; }
.route-builder label, .filters label { display: block; font-size: 12px; font-weight: 800; text-transform: uppercase; }
.route-builder select, .filters select { width: 100%; margin-top: 7px; padding: 14px; border: 1px solid var(--line); background: var(--white); color: var(--ink); }
.route-builder button, .filters button { padding: 15px 20px; border: 0; background: var(--blue); color: white; font-weight: 800; cursor: pointer; }
.route-result { margin-top: 46px; padding: 34px; border: 1px solid var(--blue); background: rgba(29,78,216,.04); }
.route-result > span { color: var(--blue); text-transform: uppercase; font-size: 12px; font-weight: 800; }
.route-result h2 { font-size: 36px; margin: 8px 0; }
.route-result li { margin-bottom: 8px; }
.filters { max-width: var(--max); margin: 38px auto 0; padding: 0 28px; grid-template-columns: 1fr 1fr auto; }
.catalog { padding-top: 34px; padding-bottom: 90px; }
.catalog-count { margin-bottom: 20px; color: var(--muted); }
.material-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.material-card { min-height: 390px; padding: 24px; border: 1px solid var(--line); border-top: 6px solid var(--cluster-color); background: rgba(255,255,255,.32); text-decoration: none; display: flex; flex-direction: column; }
.material-card:hover { background: var(--white); border-color: var(--cluster-color); transform: translateY(-3px); }
.material-card > span { color: var(--red); font-size: 11px; text-transform: uppercase; font-weight: 800; }
.material-card h2 { margin: 16px 0 10px; font-size: 24px; line-height: 1.05; }
.material-card p { margin: 0; color: var(--muted); font-size: 14px; }
.card-action { margin: 22px 0; padding: 15px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.card-action span { display: block; color: var(--blue); font-size: 10px; text-transform: uppercase; font-weight: 800; }
.card-action strong { display: block; margin-top: 6px; font-size: 13px; line-height: 1.3; }
.material-card small { margin-top: auto; padding-top: 16px; color: var(--muted); }
.article-page { padding-bottom: 100px; }
.article-hero { padding: 56px 0 52px; border-bottom: 1px solid var(--line); }
.article-hero h1 { font-size: clamp(52px, 7vw, 96px); max-width: 1000px; }
.article-hero > p:last-child { max-width: 760px; font-size: 20px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 42px; color: var(--muted); font-size: 12px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) 260px; gap: 80px; padding-top: 56px; align-items: start; }
.article-body section { margin-bottom: 50px; }
.article-body h2 { font-size: 32px; line-height: 1.05; }
.article-body p { font-size: 17px; }
.action-box, .protocol-box, .source-box { padding: 30px; background: var(--white); border-left: 5px solid var(--blue); }
.protocol-box { background: var(--ink); color: white; border-color: var(--yellow); }
.action-box > span, .protocol-box > span, .source-box > span { color: var(--blue); font-size: 11px; text-transform: uppercase; font-weight: 800; }
.protocol-box > span { color: var(--yellow); }
.protocol-box ol { margin: 22px 0 0; padding-left: 22px; }
.protocol-box li { margin: 12px 0; padding-left: 8px; }
.action-box h2, .source-box h2 { margin: 10px 0; }
.article-aside { position: sticky; top: 24px; padding: 22px; border: 1px solid var(--line); }
.article-aside dl { margin: 16px 0 0; }
.article-aside dl div { padding: 10px 0; border-top: 1px solid var(--line); }
.article-aside dt { color: var(--muted); font-size: 11px; text-transform: uppercase; }
.article-aside dd { margin: 3px 0 0; }
.measure-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; padding: 1px; list-style: none; background: var(--line); }
.measure-list li { min-height: 105px; padding: 20px; background: var(--paper); display: flex; align-items: flex-end; font-weight: 800; text-transform: uppercase; font-size: 12px; }
.related { margin-top: 70px; padding-top: 50px; border-top: 1px solid var(--line); }
.related > div { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.related a { min-height: 150px; padding: 20px; border: 1px solid var(--line); text-decoration: none; display: flex; flex-direction: column; gap: 14px; }
.related span { color: var(--red); font-size: 11px; text-transform: uppercase; }
.methodology { padding-top: 60px; padding-bottom: 70px; display: grid; grid-template-columns: 1fr 1fr; gap: 70px; }
.methodology li { margin-bottom: 12px; }
.method-note { align-self: center; padding: 30px; background: var(--ink); color: white; }
.method-note strong { color: #ff8274; text-transform: uppercase; font-size: 12px; }
.source-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.source-list article { padding: 24px; border: 1px solid var(--line); }
.source-list span { color: var(--muted); font-size: 11px; text-transform: uppercase; }
.source-list h3 { margin: 10px 0; }
.source-list p { color: var(--muted); font-size: 14px; }
.package-grid { padding-top: 70px; padding-bottom: 70px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); }
.package-grid article { background: var(--paper); padding: 30px; min-height: 220px; }
.package-grid h2 { font-size: 28px; }
.package-grid p { color: var(--muted); }
.transfer-note { padding-top: 60px; padding-bottom: 80px; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; border-top: 1px solid var(--line); }
.transfer-note li { margin-bottom: 12px; }

@media (max-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1fr); min-height: auto; }
  .hero-panel { transform: none; }
  .route-strip { grid-template-columns: 1fr; }
  .route-scenarios, .cluster-grid, .signal-grid, .material-grid, .package-grid, .featured-grid { grid-template-columns: repeat(2, 1fr); }
  .route-scenarios a:nth-child(2) { border-right: 0; }
  .route-scenarios a:last-child { grid-column: 1 / -1; min-height: 150px; border-top: 1px solid rgba(255,255,255,.35); }
  .week-grid { grid-template-columns: repeat(2, 1fr); }
  .week-grid li { border-bottom: 1px solid rgba(255,255,255,.25); }
  .week-grid li:nth-child(2n) { border-right: 0; }
  .week-grid li:last-child { grid-column: 1 / -1; min-height: 170px; }
  .featured-grid a:first-child { grid-column: 1 / -1; }
  .evidence-grid { grid-template-columns: repeat(2, 1fr); }
  .evidence-grid article:nth-child(2) { border-right: 0; }
  .corpus-section { grid-template-columns: 1fr; }
  .route-builder { grid-template-columns: 1fr 1fr; }
  .route-builder button { min-height: 49px; }
  .article-layout { grid-template-columns: 1fr; gap: 20px; }
  .article-aside { position: static; }
}

@media (max-width: 640px) {
  .site-header { min-height: 66px; padding: 14px 18px; align-items: flex-start; }
  .brand { flex-direction: column; gap: 0; }
  .brand-note { display: none; }
  .nav-shell { position: relative; }
  .nav-shell summary { display: block; list-style: none; cursor: pointer; padding: 5px 0; font-size: 14px; font-weight: 800; }
  .nav-shell nav { display: none; position: absolute; right: 0; top: 34px; z-index: 10; min-width: 210px; background: var(--white); border: 1px solid var(--line); padding: 12px; }
  .nav-shell[open] nav { display: grid; gap: 0; }
  .nav-shell nav a { padding: 10px; border-bottom: 1px solid var(--line); }
  .hero, .route-strip, .system-section, .week-section, .featured-section, .signal-section, .evidence-section, .package-cta, .page-hero, .builder-page, .catalog, .methodology, .source-register, .package-grid, .transfer-note, .article-page { padding-left: 18px; padding-right: 18px; }
  .hero { padding-top: 46px; padding-bottom: 56px; gap: 38px; }
  .hero h1, .page-hero h1, .article-hero h1 { font-size: clamp(44px, 13vw, 64px); }
  .hero-deck, .page-hero > p:not(.eyebrow), .article-hero > p:last-child { font-size: 16px; }
  .hero-panel { padding: 24px; box-shadow: 10px 10px 0 var(--sky); }
  .route-scenarios, .cluster-grid, .week-grid, .featured-grid, .signal-grid, .material-grid, .package-grid, .source-list, .related > div, .measure-list { grid-template-columns: 1fr; }
  .route-scenarios a, .route-scenarios a:nth-child(2) { min-height: 180px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.35); }
  .route-scenarios a:last-child { grid-column: auto; border-bottom: 0; }
  .week-grid li, .week-grid li:nth-child(2n) { min-height: 180px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.25); }
  .week-grid li:last-child { grid-column: auto; border-bottom: 0; }
  .featured-grid a:first-child { grid-column: auto; }
  .cluster-grid a { min-height: 145px; }
  .signal-section { padding-left: 18px; padding-right: 18px; }
  .corpus-section { padding: 0; }
  .corpus-stats strong { font-size: 58px; }
  .corpus-copy { padding: 48px 22px; }
  .evidence-grid { grid-template-columns: 1fr; }
  .evidence-grid article { border-right: 0; border-bottom: 1px solid var(--line); }
  .package-cta { min-height: 420px; align-items: flex-start; justify-content: center; flex-direction: column; }
  .site-footer { grid-template-columns: 1fr; padding: 34px 18px; }
  .site-footer > div:nth-child(2) { flex-direction: column; }
  .footer-limit { grid-column: auto; }
  .route-builder, .filters, .methodology, .transfer-note { grid-template-columns: 1fr; }
  .filters { margin-top: 28px; padding: 0 18px; }
  .route-result { padding: 22px; }
  .route-result h2 { font-size: 28px; }
  .material-card { min-height: 350px; }
  .article-layout { padding-top: 38px; }
  .article-body h2 { font-size: 28px; }
  .article-body p { font-size: 16px; }
  .action-box, .protocol-box, .source-box { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}