:root {
  --paper: #f2eee4;
  --paper-deep: #e7dfcf;
  --ink: #132a27;
  --ink-soft: #36504b;
  --road: #174f47;
  --road-dark: #0d302d;
  --orange: #e56b3f;
  --yellow: #efc86d;
  --blue: #456b87;
  --white: #fffdf7;
  --line: #9eaa9e;
  --line-dark: #61766f;
  --measure: 72rem;
  --narrow: 52rem;
  --heading: "Arial Narrow", "Franklin Gothic Medium", "Roboto Condensed", Arial, sans-serif;
  --body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1rem/1.65 var(--body); text-rendering: optimizeLegibility; }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; z-index: -1; opacity: .16; background-image: linear-gradient(rgba(19,42,39,.16) 1px, transparent 1px), linear-gradient(90deg, rgba(19,42,39,.12) 1px, transparent 1px); background-size: 32px 32px; }
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; }
button, summary { cursor: pointer; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; }
p { margin: 0 0 1.1rem; }
h1, h2, h3 { margin: 0; font-family: var(--heading); line-height: .98; letter-spacing: -.035em; text-wrap: balance; }
h1 { font-size: clamp(3rem, 7vw, 6.9rem); text-transform: uppercase; }
h2 { font-size: clamp(2rem, 4vw, 4rem); text-transform: uppercase; }
h3 { font-size: clamp(1.2rem, 2vw, 1.65rem); }
ul, ol { margin-top: 0; }
address { font-style: normal; }
code { padding: .12em .35em; border: 1px solid var(--line); background: var(--white); }

.shell { width: min(calc(100% - 2rem), var(--measure)); margin-inline: auto; }
.narrow { max-width: var(--narrow); }
.skip-link { position: fixed; top: .5rem; left: .5rem; z-index: 1000; transform: translateY(-160%); background: var(--yellow); color: var(--ink); padding: .65rem .9rem; font-weight: 800; border: 2px solid var(--ink); }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }

.utility-bar { background: var(--road-dark); color: var(--white); border-bottom: 1px solid rgba(255,255,255,.25); font-size: .7rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.utility-bar .shell { display: flex; justify-content: space-between; gap: 1rem; padding-block: .45rem; }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(242,238,228,.97); border-bottom: 2px solid var(--ink); }
.site-header__inner { min-height: 5.2rem; display: flex; align-items: center; gap: 1.5rem; }
.wordmark { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; margin-right: auto; }
.wordmark__mark { display: grid; place-items: center; width: 2.75rem; aspect-ratio: 1; background: var(--road); color: var(--white); border-radius: 50%; font: 900 1rem/1 var(--heading); letter-spacing: -.02em; border: 2px solid var(--ink); }
.wordmark strong, .wordmark small { display: block; }
.wordmark strong { font: 900 1.05rem/1 var(--heading); letter-spacing: .025em; text-transform: uppercase; }
.wordmark small { margin-top: .25rem; color: var(--ink-soft); font-size: .63rem; letter-spacing: .11em; text-transform: uppercase; }
.primary-nav { display: flex; gap: .2rem; align-items: center; }
.primary-nav a { padding: .65rem .75rem; font-size: .78rem; font-weight: 800; text-decoration: none; text-transform: uppercase; border-bottom: 3px solid transparent; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { border-color: var(--orange); }
.menu-panel { position: relative; }
.menu-panel summary { list-style: none; display: flex; align-items: center; gap: .45rem; padding: .65rem .8rem; color: var(--white); background: var(--road); border: 2px solid var(--ink); font-size: .78rem; font-weight: 850; text-transform: uppercase; }
.menu-panel summary::-webkit-details-marker { display: none; }
.menu-panel summary svg { width: 1rem; fill: none; stroke: currentColor; stroke-width: 2; }
.menu-panel__sheet { position: absolute; right: 0; top: calc(100% + .65rem); width: min(34rem, calc(100vw - 2rem)); background: var(--white); border: 2px solid var(--ink); box-shadow: 8px 8px 0 var(--ink); }
.menu-panel__heading { display: flex; justify-content: space-between; gap: 1rem; padding: .8rem 1rem; background: var(--yellow); border-bottom: 2px solid var(--ink); text-transform: uppercase; font-weight: 900; }
.menu-panel__heading small { font-weight: 700; }
.menu-panel ul { margin: 0; padding: .7rem; display: grid; grid-template-columns: 1fr 1fr; list-style: none; }
.menu-panel li a { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .65rem .7rem; text-decoration: none; border-bottom: 1px solid var(--line); font-size: .82rem; font-weight: 700; }
.menu-panel li a:hover, .menu-panel li a[aria-current="page"] { background: var(--paper-deep); }
.menu-panel li svg { width: .95rem; fill: none; stroke: currentColor; stroke-width: 2; }

.breadcrumbs { width: min(calc(100% - 2rem), var(--measure)); margin: 1.15rem auto 0; display: flex; gap: .55rem; align-items: center; color: var(--ink-soft); font-size: .72rem; font-weight: 750; letter-spacing: .05em; text-transform: uppercase; }
.breadcrumbs a { color: var(--road); }
.home-hero, .page-hero { position: relative; overflow: hidden; border-bottom: 2px solid var(--ink); }
.home-hero::after, .page-hero::after { content: "NORTHBOUND FIELD EDITION"; position: absolute; right: -2rem; bottom: 1rem; color: rgba(19,42,39,.12); font: 900 clamp(2rem,6vw,5rem)/1 var(--heading); letter-spacing: .06em; transform: rotate(-4deg); white-space: nowrap; pointer-events: none; }
.home-hero__grid { min-height: 44rem; display: grid; grid-template-columns: 1.35fr .65fr; gap: clamp(2rem,6vw,6rem); align-items: center; padding-block: clamp(3rem,7vw,6.5rem); }
.home-hero h1 { max-width: 15.5ch; font-size: clamp(2.9rem,5vw,5.1rem); line-height: .92; }
.hero-lede { max-width: 48rem; margin-top: 1.8rem; font-size: clamp(1.05rem,1.8vw,1.35rem); color: var(--ink-soft); }
.eyebrow { display: block; margin-bottom: .85rem; color: var(--orange); font-size: .72rem; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
.button-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.button { display: inline-flex; justify-content: space-between; align-items: center; gap: 1.35rem; min-height: 3.2rem; padding: .72rem 1rem; border: 2px solid var(--ink); font-size: .8rem; font-weight: 900; letter-spacing: .04em; text-decoration: none; text-transform: uppercase; transition: transform .16s ease, background-color .16s ease, color .16s ease; }
.button:hover { transform: translate(-2px,-2px); }
.button svg { width: 1.1rem; fill: none; stroke: currentColor; stroke-width: 2; }
.button--solid { background: var(--orange); color: var(--ink); box-shadow: 4px 4px 0 var(--ink); }
.button--outline { background: transparent; color: var(--ink); }
.button--outline:hover { background: var(--yellow); }
.button--paper { background: var(--paper); color: var(--ink); box-shadow: 4px 4px 0 var(--orange); }
.button--ghost { color: var(--white); border-color: var(--white); }
.button--ghost:hover { color: var(--ink); background: var(--yellow); }
.boundary-row { display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; margin: 2rem 0 0; padding: 1rem 0 0; list-style: none; border-top: 1px solid var(--line); color: var(--road); font-size: .72rem; font-weight: 850; text-transform: uppercase; }
.boundary-row li::before { content: "◆"; margin-right: .45rem; color: var(--orange); }
.home-hero__visual { position: relative; align-self: stretch; display: grid; align-items: center; }
.field-photo { margin: 0; }
.field-photo__frame { position: relative; overflow: hidden; border: 2px solid var(--ink); background: var(--paper-deep); }
.field-photo__frame::before { content: ""; position: absolute; inset: .65rem; border: 1px solid rgba(255,255,255,.75); z-index: 1; pointer-events: none; }
.field-photo img { width: 100%; height: 100%; min-height: 20rem; object-fit: cover; filter: saturate(.78) contrast(1.03); }
.field-photo figcaption { display: grid; grid-template-columns: auto 1fr; gap: .7rem; padding: .75rem .85rem; border: 2px solid var(--ink); border-top: 0; background: var(--yellow); font-size: .78rem; line-height: 1.4; }
.field-photo figcaption span { font-weight: 900; text-transform: uppercase; }
.field-photo--hero { transform: rotate(1.8deg); }
.field-photo--hero img { min-height: 34rem; object-position: 54% center; }
.hero-stamp { position: absolute; left: -2rem; bottom: 2rem; padding: 1rem 1.15rem; background: var(--road); color: var(--white); border: 2px solid var(--ink); transform: rotate(-4deg); box-shadow: 5px 5px 0 var(--yellow); }
.hero-stamp strong, .hero-stamp span { display: block; }
.hero-stamp strong { font: 900 1.45rem/1 var(--heading); letter-spacing: .08em; }
.hero-stamp span { margin-top: .4rem; font-size: .63rem; text-transform: uppercase; }
.page-hero__grid { min-height: 32rem; display: grid; grid-template-columns: minmax(0,1.25fr) minmax(17rem,.75fr); gap: clamp(2rem,7vw,7rem); align-items: center; padding-block: clamp(3.5rem,7vw,7rem); }
.page-hero h1 { max-width: 13ch; font-size: clamp(2.8rem,6vw,6rem); }
.page-hero p { max-width: 48rem; margin-top: 1.5rem; font-size: clamp(1rem,1.5vw,1.22rem); color: var(--ink-soft); }
.page-hero__aside .field-photo img { min-height: 22rem; max-height: 29rem; }
.page-hero__aside .route-diagram { margin: 0; }
.hero-note { padding: 1.4rem; background: var(--yellow); border: 2px solid var(--ink); box-shadow: 7px 7px 0 var(--road); transform: rotate(1deg); }
.hero-note span, .hero-note strong, .hero-note small { display: block; }
.hero-note span { margin-bottom: 1rem; font-size: .68rem; font-weight: 900; letter-spacing: .15em; text-transform: uppercase; }
.hero-note strong { font: 900 clamp(1.4rem,3vw,2.35rem)/1.02 var(--heading); text-transform: uppercase; }
.hero-note small { margin-top: 1rem; line-height: 1.5; }

.section { padding-block: clamp(4rem,8vw,8rem); border-bottom: 1px solid var(--line); }
.section--rule { border-top: 8px solid var(--road); }
.section--tint { background: var(--paper-deep); }
.section--dark { background: var(--road-dark); color: var(--white); border-color: rgba(255,255,255,.25); }
.section--dark .eyebrow { color: var(--yellow); }
.section--dark p, .section--dark .section-heading p { color: #dce6df; }
.section-heading { position: relative; display: grid; grid-template-columns: auto minmax(0,1fr); gap: 1.25rem; align-items: start; max-width: 60rem; margin-bottom: clamp(2rem,5vw,4rem); }
.section-heading__number { color: var(--orange); font: 900 clamp(2rem,5vw,4.7rem)/.8 var(--heading); }
.section-heading p { max-width: 48rem; margin: 1rem 0 0; color: var(--ink-soft); font-size: 1.05rem; }
.section-cta { margin-top: 2rem; text-align: right; }

.change-grid, .four-part-grid, .definition-grid, .method-grid, .purpose-grid { display: grid; grid-template-columns: repeat(4,1fr); border: 2px solid var(--ink); }
.method-grid { grid-template-columns: repeat(3,1fr); }
.change-grid article, .four-part-grid article, .definition-grid article, .method-grid article, .purpose-grid article { min-height: 15rem; padding: 1.4rem; border-right: 1px solid var(--ink); background: var(--white); }
.change-grid article:last-child, .four-part-grid article:last-child, .definition-grid article:last-child, .method-grid article:last-child, .purpose-grid article:last-child { border-right: 0; }
.change-grid article:nth-child(even), .four-part-grid article:nth-child(even) { background: var(--yellow); }
.change-grid span, .four-part-grid span, .method-grid span, .purpose-grid span { display: block; margin-bottom: 2rem; color: var(--orange); font-size: .68rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.change-grid h3, .four-part-grid h3, .definition-grid h3, .method-grid h3, .purpose-grid h3 { margin-bottom: .8rem; text-transform: uppercase; }
.change-grid p, .four-part-grid p, .definition-grid p, .method-grid p, .purpose-grid p { color: var(--ink-soft); font-size: .88rem; line-height: 1.55; }

.configuration-stack { border-top: 2px solid var(--ink); }
.configuration-card { border-bottom: 2px solid var(--ink); }
.configuration-card summary { list-style: none; min-height: 6rem; display: grid; grid-template-columns: 4rem 1fr auto; gap: 1rem; align-items: center; padding: 1rem; }
.configuration-card summary::-webkit-details-marker { display: none; }
.configuration-card summary:hover { background: rgba(239,200,109,.38); }
.configuration-card[open] summary { background: var(--yellow); }
.configuration-card__index { color: var(--orange); font: 900 2rem/1 var(--heading); }
.configuration-card summary small, .configuration-card summary strong { display: block; }
.configuration-card summary small { margin-bottom: .25rem; font-size: .64rem; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
.configuration-card summary strong { font: 900 clamp(1.5rem,3vw,2.4rem)/1 var(--heading); text-transform: uppercase; }
.configuration-card__action { font-size: .7rem; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.configuration-card__action::after { content: "+"; margin-left: .65rem; font-size: 1.25rem; }
.configuration-card[open] .configuration-card__action::after { content: "−"; }
.configuration-card__body { display: grid; grid-template-columns: .85fr 1.15fr; gap: 1.5rem; padding: 1.5rem; border-top: 1px solid var(--ink); background: var(--white); }
.configuration-card dl { margin: 0; border-top: 1px solid var(--line); }
.configuration-card dl > div { display: grid; grid-template-columns: 13rem 1fr; gap: 1rem; padding: .72rem 0; border-bottom: 1px solid var(--line); }
.configuration-card dt { color: var(--road); font-size: .68rem; font-weight: 900; letter-spacing: .04em; text-transform: uppercase; }
.configuration-card dd { margin: 0; font-size: .88rem; line-height: 1.48; }
.route-diagram { margin: 0; align-self: start; background: var(--paper); border: 2px solid var(--ink); }
.route-diagram svg { width: 100%; color: var(--ink); }
.diagram-road { fill: none; stroke: var(--line-dark); stroke-width: 2; stroke-dasharray: 0; }
.diagram-road path:last-child { stroke-dasharray: 12 8; }
.diagram-vehicle { fill: var(--paper-deep); stroke: var(--ink); stroke-width: 3; stroke-linejoin: round; }
.diagram-vehicle circle:nth-of-type(4n+1), .diagram-vehicle circle:nth-of-type(4n+3) { fill: var(--road); }
.diagram-vehicle circle:nth-of-type(4n+2), .diagram-vehicle circle:nth-of-type(4n+4) { fill: var(--yellow); stroke-width: 1; }
.diagram-count { fill: var(--road); font: 800 10px var(--body); letter-spacing: 1.5px; }
.route-diagram figcaption { display: flex; justify-content: space-between; gap: 1rem; padding: .65rem .75rem; border-top: 1px solid var(--ink); font-size: .68rem; text-transform: uppercase; }
.route-diagram figcaption strong { color: var(--road); }

.split-layout { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(18rem,.75fr); gap: clamp(2.5rem,7vw,7rem); align-items: start; }
.method-steps { margin: 0; padding: 0; list-style: none; border-top: 2px solid var(--ink); }
.method-steps li, .editorial-cycle li { display: grid; grid-template-columns: 4rem 1fr; gap: 1rem; padding: 1.15rem 0; border-bottom: 1px solid var(--line); }
.method-steps li > span, .editorial-cycle li > span { color: var(--orange); font: 900 1.55rem/1 var(--heading); }
.method-steps h3, .editorial-cycle h3 { margin-bottom: .35rem; text-transform: uppercase; }
.method-steps p, .editorial-cycle p { color: var(--ink-soft); }
.mini-contrast { display: grid; margin-top: 1rem; border: 2px solid var(--ink); }
.mini-contrast article { padding: 1rem; background: var(--white); border-bottom: 1px solid var(--ink); }
.mini-contrast article:last-child { border-bottom: 0; }
.mini-contrast span { display: block; margin-bottom: .25rem; color: var(--orange); font-size: .68rem; font-weight: 900; text-transform: uppercase; }
.mini-contrast p { margin: 0; font-size: .82rem; }
.checklist-preview { display: grid; grid-template-columns: 1fr .75fr; gap: 5rem; align-items: center; }
.paper-list { margin: 0; padding: 1.5rem 1.5rem 1.5rem 3.2rem; color: var(--ink); background: var(--paper); border: 2px solid var(--white); box-shadow: 8px 8px 0 var(--orange); transform: rotate(1deg); }
.paper-list li { padding: .75rem 0; border-bottom: 1px dashed var(--line-dark); }
.keyword-block { display: grid; grid-template-columns: 1.2fr .8fr; gap: clamp(2rem,7vw,7rem); align-items: center; }
.keyword-block > div > p { max-width: 49rem; color: var(--ink-soft); font-size: 1.05rem; }
.independence-card { padding: 1.6rem; border: 2px solid var(--ink); background: var(--yellow); box-shadow: 7px 7px 0 var(--road); }
.independence-card > span { display: block; margin-bottom: .55rem; color: var(--road); font-size: .68rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.independence-card h3 { margin-bottom: 1rem; text-transform: uppercase; }
.independence-card dl { margin: 1.5rem 0 0; }
.independence-card dl > div { padding: .8rem 0; border-top: 1px solid var(--ink); }
.independence-card dt { font-weight: 900; text-transform: uppercase; }
.independence-card dd { margin: .2rem 0 0; font-size: .85rem; }
.faq-item { border-top: 2px solid var(--ink); }
.faq-item:last-child { border-bottom: 2px solid var(--ink); }
.faq-item summary { list-style: none; padding: 1.25rem 3rem 1.25rem 0; position: relative; font: 900 1.35rem/1.1 var(--heading); text-transform: uppercase; }
.faq-item summary::after { content: "+"; position: absolute; right: .5rem; top: 1rem; color: var(--orange); font-size: 2rem; }
.faq-item[open] summary::after { content: "−"; }
.faq-item > div { max-width: 46rem; padding: 0 0 1.5rem; color: var(--ink-soft); }
.form-feature { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(2rem,7vw,7rem); align-items: start; }
.form-feature h2 { margin-bottom: 1rem; }
.form-truth { padding: .8rem; border-left: 4px solid var(--orange); background: var(--paper-deep); font-size: .82rem; }

.description-template { margin-top: 2rem; padding: 1.5rem; border: 2px solid var(--ink); background: var(--yellow); }
.description-template span { display: block; margin-bottom: .65rem; font-size: .68rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.description-template p { margin: 0; font-size: 1.15rem; }
.tabbed-notes, .load-timeline { border: 2px solid var(--ink); background: var(--white); }
.tab-list { display: flex; flex-wrap: wrap; border-bottom: 2px solid var(--ink); }
.tab-list button { flex: 1 1 auto; padding: .85rem; border: 0; border-right: 1px solid var(--ink); background: var(--paper-deep); color: var(--ink); font-size: .72rem; font-weight: 850; text-transform: uppercase; }
.tab-list button:last-child { border-right: 0; }
.tab-list button[aria-selected="true"] { background: var(--yellow); }
.tab-panels > article { padding: 1.5rem; }
.tab-panels > article[hidden] { display: none; }
.tabbed-notes .tab-panels article { display: grid; grid-template-columns: .9fr 1.1fr; gap: 1.5rem; align-items: center; }
.tabbed-notes .tab-panels article[hidden] { display: none; }
.tabbed-notes h3 { text-transform: uppercase; }
.comparison-sheet { border: 2px solid var(--ink); }
.comparison-sheet article { padding: 1.25rem; background: var(--white); border-bottom: 1px solid var(--ink); }
.comparison-sheet article:last-child { border-bottom: 0; background: var(--yellow); }
.comparison-sheet span { color: var(--orange); font-size: .68rem; font-weight: 900; text-transform: uppercase; }
.comparison-sheet h3 { margin: .45rem 0; text-transform: uppercase; }
.callout { width: min(calc(100% - 2rem), var(--measure)); margin: 0 auto clamp(4rem,8vw,8rem); display: grid; grid-template-columns: 9rem 1fr; border: 2px solid var(--ink); background: var(--yellow); }
.callout__tab { display: grid; place-items: center; padding: 1rem; background: var(--road); color: var(--white); font-size: .68rem; font-weight: 900; letter-spacing: .12em; text-align: center; text-transform: uppercase; }
.callout > div { padding: 1.5rem; }
.callout h2 { margin-bottom: .65rem; font-size: clamp(1.5rem,3vw,2.5rem); }
.callout p:last-child { margin-bottom: 0; }

.filter-bar { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.filter-bar button, .comparison-controls button { padding: .7rem .85rem; border: 2px solid var(--ink); background: transparent; color: var(--ink); font-size: .72rem; font-weight: 850; text-transform: uppercase; }
.filter-bar button.is-active, .comparison-controls button.is-active { background: var(--yellow); }
.scenario-library { display: grid; gap: 2rem; }
.scenario-record { display: grid; grid-template-columns: .55fr .45fr; border: 2px solid var(--ink); background: var(--white); }
.scenario-record[hidden] { display: none; }
.scenario-record > header { grid-column: 1/-1; display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; padding: 1.2rem; background: var(--road); color: var(--white); }
.scenario-record > header span { font-size: .68rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.scenario-record > header h2 { font-size: clamp(1.7rem,3vw,3rem); }
.scenario-record .route-diagram { margin: 1.25rem; }
.scenario-record dl { margin: 1.25rem 1.25rem 1.25rem 0; border-top: 1px solid var(--line); }
.scenario-record dl > div { padding: .6rem 0; border-bottom: 1px solid var(--line); }
.scenario-record dt { color: var(--road); font-size: .66rem; font-weight: 900; text-transform: uppercase; }
.scenario-record dd { margin: .15rem 0 0; font-size: .84rem; line-height: 1.45; }
.scenario-record > footer { grid-column: 1/-1; display: grid; grid-template-columns: auto 1fr auto 1fr auto 1fr; gap: .75rem; padding: 1rem 1.25rem; border-top: 2px solid var(--ink); background: var(--paper-deep); font-size: .72rem; }
.scenario-record > footer span { color: var(--orange); font-weight: 900; text-transform: uppercase; }
.scenario-record > footer p { margin: 0; }
.large-copy { font-size: clamp(1.2rem,2vw,1.55rem); line-height: 1.5; }
.before-after { border: 2px solid var(--ink); background: var(--white); }
.comparison-controls { display: flex; border-bottom: 2px solid var(--ink); }
.comparison-controls button { flex: 1; border: 0; border-right: 1px solid var(--ink); }
.comparison-stage { padding: 1.5rem; }
.comparison-stage > div[hidden] { display: none; }
.comparison-stage .route-diagram { max-width: 40rem; margin: 0 auto 1rem; }
.stacked-notes { border-top: 2px solid var(--ink); }
.stacked-notes article { padding: 1rem 0; border-bottom: 1px solid var(--line); }
.stacked-notes h3 { margin-bottom: .35rem; text-transform: uppercase; }
.observe-card, .redaction-card, .operator-only, .review-card { padding: 1.5rem; border: 2px solid var(--ink); background: var(--yellow); box-shadow: 6px 6px 0 var(--road); }
.section--dark .review-card { color: var(--ink); }
.observe-card > span, .redaction-card > span, .operator-only > span, .review-card > span { display: block; margin-bottom: 1rem; color: var(--road); font-size: .68rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.observe-card ol, .observe-card ul, .redaction-card ul, .operator-only ul, .review-card ul { margin-bottom: 0; padding-left: 1.2rem; }
.observe-card li, .redaction-card li, .operator-only li, .review-card li { margin: .5rem 0; }

.distinction-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1.5rem; }
.distinction-grid > article { border: 2px solid var(--ink); background: var(--white); }
.distinction-grid .route-diagram { border: 0; border-bottom: 2px solid var(--ink); }
.distinction-grid h2 { padding: 1.2rem 1.2rem .5rem; font-size: 2rem; }
.distinction-grid dl { margin: 0; padding: .5rem 1.2rem 1.2rem; }
.distinction-grid dl > div { padding: .65rem 0; border-top: 1px solid var(--line); }
.distinction-grid dt { color: var(--orange); font-size: .67rem; font-weight: 900; text-transform: uppercase; }
.distinction-grid dd { margin: .15rem 0 0; font-size: .84rem; }
.table-wrap { overflow-x: auto; border: 2px solid var(--white); }
table { width: 100%; min-width: 48rem; border-collapse: collapse; }
th, td { padding: 1rem; border: 1px solid rgba(255,255,255,.25); text-align: left; vertical-align: top; }
thead th { background: var(--yellow); color: var(--ink); font-size: .72rem; text-transform: uppercase; }
tbody th { color: var(--yellow); font-family: var(--heading); font-size: 1.2rem; text-transform: uppercase; }
.device-card { display: grid; gap: .6rem; padding: 1.5rem; border: 2px solid var(--ink); background: var(--white); }
.device-card > span { color: var(--orange); font-size: .68rem; font-weight: 900; text-transform: uppercase; }
.device-card h3 { margin-bottom: .7rem; text-transform: uppercase; }
.device-card label { display: flex; gap: .7rem; align-items: center; padding: .7rem; background: var(--paper-deep); }
.device-card input { width: 1.2rem; height: 1.2rem; accent-color: var(--orange); }
.device-card p { margin: .7rem 0 0; color: var(--ink-soft); font-size: .8rem; }
.source-split, .context-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1.5rem; }
.source-split > div { padding: 1.4rem; border: 2px solid var(--ink); background: var(--white); }
.section--dark .source-split > div { background: rgba(255,255,255,.08); border-color: var(--white); }
.source-split h3 { margin-bottom: .65rem; text-transform: uppercase; }
.source-line { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid currentColor; font-size: .78rem; }
.source-line a { font-weight: 800; }
.tick-list { padding: 0; list-style: none; }
.tick-list li { position: relative; padding: .65rem 0 .65rem 1.7rem; border-bottom: 1px solid var(--line); }
.tick-list li::before { content: "✓"; position: absolute; left: 0; color: var(--orange); font-weight: 900; }
.trip-sequence, .record-sequence { display: grid; grid-template-columns: repeat(3,1fr); border: 2px solid var(--ink); }
.trip-sequence article, .record-sequence article { min-height: 14rem; padding: 1.4rem; border-right: 1px solid var(--ink); background: var(--white); }
.trip-sequence article:nth-child(2), .record-sequence article:nth-child(2) { background: var(--yellow); }
.trip-sequence article:last-child, .record-sequence article:last-child { border-right: 0; }
.trip-sequence span, .record-sequence span { color: var(--orange); font-size: .68rem; font-weight: 900; text-transform: uppercase; }
.trip-sequence h3, .record-sequence h3 { margin: 2rem 0 .6rem; text-transform: uppercase; }
.walkaround-sheet { padding: 1.5rem; border: 2px solid var(--ink); background: var(--white); box-shadow: 7px 7px 0 var(--orange); }
.walkaround-sheet header { padding-bottom: 1rem; border-bottom: 2px solid var(--ink); }
.walkaround-sheet header span { color: var(--orange); font-size: .68rem; font-weight: 900; text-transform: uppercase; }
.walkaround-sheet header h3 { margin-top: .4rem; text-transform: uppercase; }
.walkaround-sheet label { display: flex; gap: .75rem; padding: .8rem 0; border-bottom: 1px solid var(--line); }
.walkaround-sheet input { width: 1.2rem; height: 1.2rem; accent-color: var(--orange); }
.walkaround-sheet footer { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; padding-top: 1rem; }
.walkaround-sheet footer span { margin-right: auto; font-size: .75rem; font-weight: 900; text-transform: uppercase; }
.walkaround-sheet footer button { padding: .55rem .75rem; border: 2px solid var(--ink); background: var(--yellow); font-weight: 800; text-transform: uppercase; }
.commercial-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; }
.commercial-grid article { border: 2px solid var(--ink); background: var(--white); }
.commercial-grid .route-diagram { border: 0; border-bottom: 2px solid var(--ink); }
.commercial-grid h3, .commercial-grid p { margin-inline: 1rem; }
.commercial-grid h3 { margin-top: 1rem; text-transform: uppercase; }
.load-timeline { color: var(--ink); }
.load-timeline .tab-panels article { min-height: 14rem; }
.load-timeline .tab-panels span { color: var(--orange); font-size: .68rem; font-weight: 900; text-transform: uppercase; }
.load-timeline .tab-panels h3 { margin: 2rem 0 .6rem; text-transform: uppercase; }
.load-timeline .tab-panels p { color: var(--ink-soft); }

.checklist-board { border: 2px solid var(--ink); background: var(--white); box-shadow: 10px 10px 0 var(--road); }
.checklist-board > header { display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: end; padding: 1.5rem; background: var(--yellow); border-bottom: 2px solid var(--ink); }
.checklist-board > header span { font-size: .68rem; font-weight: 900; text-transform: uppercase; }
.checklist-board > header h2 { margin-top: .35rem; font-size: clamp(1.8rem,4vw,3.5rem); }
.checklist-progress { min-width: 15rem; }
.checklist-progress strong { display: block; margin-bottom: .5rem; font-size: .75rem; text-align: right; text-transform: uppercase; }
.checklist-progress > div { height: .6rem; border: 1px solid var(--ink); background: var(--paper); }
.checklist-progress span { display: block; height: 100%; background: var(--road); transition: width .2s ease; }
.checklist-board ol { margin: 0; padding: 0; list-style: none; }
.checklist-board li { border-bottom: 1px solid var(--ink); }
.checklist-board label { display: grid; grid-template-columns: auto 3.5rem 1fr; gap: 1rem; align-items: start; padding: 1.2rem; cursor: pointer; }
.checklist-board input { width: 1.35rem; height: 1.35rem; margin-top: .3rem; accent-color: var(--orange); }
.check-number { color: var(--orange); font: 900 1.5rem/1 var(--heading); }
.check-copy { display: grid; gap: .35rem; }
.check-copy strong { font: 900 1.25rem/1 var(--heading); text-transform: uppercase; }
.check-copy > span { color: var(--ink-soft); font-size: .85rem; }
.checklist-board > footer { display: flex; flex-wrap: wrap; gap: .75rem; padding: 1.5rem; }
.print-record { max-width: 58rem; margin-inline: auto; color: var(--ink); background: var(--white); border: 2px solid var(--white); box-shadow: 9px 9px 0 var(--orange); }
.print-record > header { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem; background: var(--yellow); border-bottom: 2px solid var(--ink); font-size: .72rem; }
.record-lines { padding: 1.5rem; }
.record-lines > div { display: grid; gap: .6rem; margin-bottom: 1.25rem; }
.record-lines span { font-size: .72rem; font-weight: 900; text-transform: uppercase; }
.record-lines i { display: block; height: 1.7rem; border-bottom: 1px solid var(--ink); }
.print-record > footer { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1rem; border-top: 2px solid var(--ink); }
.print-record > footer p { margin: 0; font-size: .75rem; font-weight: 800; }
.print-record button { padding: .65rem .85rem; border: 2px solid var(--ink); background: var(--orange); font-weight: 900; text-transform: uppercase; }
.profile-disclaimer { background: var(--yellow); border-bottom: 2px solid var(--ink); }
.profile-disclaimer .shell { display: grid; grid-template-columns: 12rem 1fr; gap: 2rem; padding-block: 1.2rem; }
.profile-disclaimer span { font-size: .68rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.profile-disclaimer p { margin: 0; font-size: .88rem; font-weight: 650; }
.context-grid { grid-template-columns: repeat(3,1fr); }
.context-grid article { border: 2px solid var(--ink); background: var(--white); }
.context-grid .route-diagram { border: 0; border-bottom: 2px solid var(--ink); }
.context-grid h3, .context-grid p { margin-inline: 1rem; }
.context-grid h3 { margin-top: 1rem; text-transform: uppercase; }

.editorial-cycle { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 0 2rem; }
.boundary-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.35); }
.boundary-list li { display: grid; grid-template-columns: 13rem 1fr; gap: 1rem; padding: .9rem 0; border-bottom: 1px solid rgba(255,255,255,.35); }
.boundary-list strong { color: var(--yellow); }
.review-card strong { display: block; margin-bottom: 1rem; font: 900 2.5rem/1 var(--heading); }
.plain-steps { padding-left: 1.25rem; }
.plain-steps li { margin: .8rem 0; padding-left: .5rem; }
.contact-prompt { padding: 1.5rem; border-left: 6px solid var(--orange); background: var(--paper-deep); }
.contact-prompt span { color: var(--orange); font-size: .68rem; font-weight: 900; text-transform: uppercase; }
.contact-prompt h3 { margin: .6rem 0; text-transform: uppercase; }
.text-link { color: var(--road); font-weight: 900; text-transform: uppercase; }
.form-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: clamp(2rem,7vw,7rem); align-items: start; }
.do-not-send { margin: 1.5rem 0; padding: 1.2rem; border: 2px solid var(--ink); background: var(--yellow); }
.do-not-send strong { text-transform: uppercase; }
.do-not-send ul { columns: 2; margin: .8rem 0 0; padding-left: 1.1rem; font-size: .83rem; }
.editorial-form { display: grid; gap: 1rem; padding: 1.5rem; border: 2px solid var(--ink); background: var(--white); box-shadow: 8px 8px 0 var(--road); }
.compact-form { grid-template-columns: 1fr 1fr; }
.field-wide { grid-column: 1/-1; }
.field-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.editorial-form label > span:first-child { display: block; margin-bottom: .35rem; font-size: .72rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.editorial-form input, .editorial-form select, .editorial-form textarea { width: 100%; padding: .75rem; color: var(--ink); background: var(--paper); border: 1px solid var(--ink); border-radius: 0; }
.editorial-form textarea { resize: vertical; }
.checkbox-row { display: flex !important; gap: .7rem; align-items: flex-start; padding: .9rem; background: var(--paper-deep); }
.checkbox-row input { width: 1.2rem; height: 1.2rem; margin-top: .15rem; accent-color: var(--orange); }
.checkbox-row span { margin: 0 !important; font-size: .82rem !important; font-weight: 650 !important; letter-spacing: 0 !important; text-transform: none !important; }
.editorial-form button { justify-self: start; }
.form-status { margin: 0; min-height: 1.5rem; font-size: .82rem; font-weight: 750; }
.form-status[data-state="error"] { color: #a32f22; }
.form-status[data-state="ready"] { color: var(--road); }
.purpose-grid { grid-template-columns: repeat(3,1fr); }
.purpose-grid article:last-child { border-right: 0; }
.contact-sheet { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; border: 2px solid var(--ink); }
.contact-sheet > div { padding: 2rem; }
.contact-sheet > div:first-child { background: var(--yellow); border-right: 1px solid var(--ink); }
.contact-sheet address { margin: 1rem 0; }
.contact-sheet a { display: block; margin: .3rem 0; }
.policy-layout { display: grid; grid-template-columns: 15rem 1fr; gap: clamp(2rem,6vw,6rem); align-items: start; }
.policy-index { position: sticky; top: 7rem; display: grid; border-top: 2px solid var(--ink); }
.policy-index strong, .policy-index a { padding: .65rem 0; border-bottom: 1px solid var(--line); }
.policy-index strong { color: var(--orange); font-size: .7rem; text-transform: uppercase; }
.policy-index a { font-size: .8rem; font-weight: 750; text-decoration: none; }
.policy-copy { max-width: 52rem; }
.policy-copy section { position: relative; padding: 0 0 2.5rem 3rem; margin-bottom: 2.5rem; border-bottom: 1px solid var(--line); }
.policy-copy section > span { position: absolute; left: 0; top: .2rem; color: var(--orange); font: 900 1.3rem/1 var(--heading); }
.policy-copy h2, .policy-terms h2 { margin-bottom: 1rem; font-size: clamp(1.5rem,3vw,2.4rem); }
.policy-terms { display: grid; grid-template-columns: 1fr 1fr; border: 2px solid var(--ink); }
.policy-terms article { position: relative; min-height: 16rem; padding: 2rem; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); background: var(--white); }
.policy-terms article:nth-child(even) { border-right: 0; background: var(--paper-deep); }
.policy-terms article:nth-last-child(-n+2) { border-bottom: 0; }
.policy-terms article > span { color: var(--orange); font: 900 1.35rem/1 var(--heading); }
.policy-terms h2 { margin-top: 2rem; text-transform: uppercase; }

.site-footer { background: var(--road-dark); color: var(--white); border-top: 8px solid var(--orange); }
.footer-grid { display: grid; grid-template-columns: 1.4fr .7fr .7fr .9fr; gap: 2rem; padding-block: 4rem; }
.wordmark--footer .wordmark__mark { background: var(--yellow); color: var(--ink); }
.wordmark--footer small { color: #bed0c9; }
.footer-brand p { max-width: 32rem; margin-top: 1.5rem; color: #d5e0db; }
.independence-line { padding-left: .8rem; border-left: 3px solid var(--orange); font-size: .82rem; }
.site-footer h2 { margin-bottom: 1rem; color: var(--yellow); font-size: .85rem; letter-spacing: .08em; }
.site-footer ul { margin: 0; padding: 0; list-style: none; }
.site-footer li { margin: .55rem 0; }
.site-footer a { color: #e8eee9; font-size: .82rem; }
.footer-contact a { display: block; margin-top: .6rem; }
.footer-contact address { color: #d5e0db; font-size: .82rem; }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; padding-block: 1rem; border-top: 1px solid rgba(255,255,255,.25); color: #bed0c9; font-size: .68rem; letter-spacing: .06em; text-transform: uppercase; }

@media (max-width: 980px) {
  .primary-nav { display: none; }
  .home-hero__grid, .page-hero__grid, .split-layout, .keyword-block, .form-feature, .form-layout { grid-template-columns: 1fr; }
  .home-hero__visual { max-width: 40rem; }
  .home-hero__grid { min-height: 0; }
  .field-photo--hero img { min-height: 26rem; }
  .change-grid, .four-part-grid, .definition-grid, .method-grid { grid-template-columns: 1fr 1fr; }
  .change-grid article:nth-child(2), .four-part-grid article:nth-child(2), .definition-grid article:nth-child(2), .method-grid article:nth-child(2) { border-right: 0; }
  .change-grid article, .four-part-grid article, .definition-grid article, .method-grid article { border-bottom: 1px solid var(--ink); }
  .change-grid article:nth-last-child(-n+2), .four-part-grid article:nth-last-child(-n+2), .definition-grid article:nth-last-child(-n+2), .method-grid article:nth-last-child(-n+2) { border-bottom: 0; }
  .configuration-card__body, .scenario-record { grid-template-columns: 1fr; }
  .scenario-record dl { margin: 0 1.25rem 1.25rem; }
  .scenario-record > footer { grid-template-columns: auto 1fr; }
  .checklist-preview { grid-template-columns: 1fr; }
  .commercial-grid { grid-template-columns: 1fr; }
  .context-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-contact { grid-column: 1/-1; }
}

@media (max-width: 700px) {
  body::before { display: none; }
  .utility-bar .shell span:last-child { display: none; }
  .site-header__inner { min-height: 4.6rem; gap: .6rem; }
  .wordmark small { display: none; }
  .menu-panel summary span { display: none; }
  .menu-panel__sheet { position: fixed; top: 6.4rem; left: 1rem; right: 1rem; width: auto; max-height: calc(100vh - 7.5rem); overflow: auto; }
  .menu-panel ul { grid-template-columns: 1fr; }
  .home-hero h1, .page-hero h1 { font-size: clamp(2.65rem,11vw,4.5rem); }
  .home-hero__grid, .page-hero__grid { padding-block: 3rem; }
  .home-hero::after, .page-hero::after { display: none; }
  .hero-stamp { left: -.5rem; bottom: 1rem; }
  .button-row { align-items: stretch; }
  .button-row .button { width: 100%; }
  .section { padding-block: 4rem; }
  .section-heading { grid-template-columns: 1fr; }
  .section-heading__number { margin-bottom: -.25rem; }
  .change-grid, .four-part-grid, .definition-grid, .method-grid, .purpose-grid { grid-template-columns: 1fr; }
  .change-grid article, .four-part-grid article, .definition-grid article, .method-grid article, .purpose-grid article { min-height: 0; border-right: 0; border-bottom: 1px solid var(--ink) !important; }
  .change-grid article:last-child, .four-part-grid article:last-child, .definition-grid article:last-child, .method-grid article:last-child, .purpose-grid article:last-child { border-bottom: 0 !important; }
  .configuration-card summary { grid-template-columns: 2.5rem 1fr; }
  .configuration-card__action { grid-column: 2; }
  .configuration-card dl > div { grid-template-columns: 1fr; gap: .2rem; }
  .route-diagram figcaption { display: grid; }
  .tabbed-notes .tab-panels article { grid-template-columns: 1fr; }
  .distinction-grid, .source-split, .trip-sequence, .record-sequence, .editorial-cycle, .contact-sheet, .field-pair { grid-template-columns: 1fr; }
  .trip-sequence article, .record-sequence article { min-height: 0; border-right: 0; border-bottom: 1px solid var(--ink); }
  .trip-sequence article:last-child, .record-sequence article:last-child { border-bottom: 0; }
  .scenario-record > footer { grid-template-columns: 1fr; }
  .checklist-board > header { grid-template-columns: 1fr; }
  .checklist-progress { min-width: 0; }
  .checklist-progress strong { text-align: left; }
  .checklist-board label { grid-template-columns: auto 1fr; }
  .check-number { display: none; }
  .profile-disclaimer .shell { grid-template-columns: 1fr; gap: .4rem; }
  .compact-form { grid-template-columns: 1fr; }
  .field-wide { grid-column: auto; }
  .do-not-send ul { columns: 1; }
  .policy-layout { grid-template-columns: 1fr; }
  .policy-index { position: static; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
  .policy-terms { grid-template-columns: 1fr; }
  .policy-terms article, .policy-terms article:nth-child(even) { min-height: 0; border-right: 0; border-bottom: 1px solid var(--ink); }
  .policy-terms article:last-child { border-bottom: 0; }
  .callout { grid-template-columns: 1fr; }
  .callout__tab { min-height: 3rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-contact { grid-column: auto; }
  .footer-bottom { display: grid; }
}

@media print {
  @page { margin: 15mm; }
  body { background: #fff; color: #000; font-size: 11pt; }
  body::before, .utility-bar, .site-header, .breadcrumbs, .site-footer, .page-hero, .home-hero, .button-row, .callout, .section-heading__number, .field-photo, .profile-disclaimer { display: none !important; }
  .section { padding: 0; border: 0; }
  .section:not(:has(.checklist-board)):not(:has(.print-record)):not(:has(.walkaround-sheet)) { display: none; }
  .checklist-board, .print-record, .walkaround-sheet { box-shadow: none; border: 1px solid #000; break-inside: avoid; }
  .checklist-board > header, .print-record > header { background: #fff; }
  .checklist-board > footer, .print-record button, .walkaround-sheet footer button { display: none; }
  .checklist-board label { padding: .65rem; }
  .checklist-board input { appearance: none; width: 1rem; height: 1rem; border: 1px solid #000; }
  .check-copy > span { color: #000; }
  a { text-decoration: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}