:root {
  --ink: #0d1726;
  --iron: #13283a;
  --iron-light: #21445a;
  --paper: #f6f0e4;
  --paper-muted: #c7c0b4;
  --brass: #b98b34;
  --brass-light: #ead7aa;
  --verdigris: #2d7c78;
  --blood: #8d3e3e;
  --blood-light: #d08073;
  --rule: rgba(246, 240, 228, 0.2);
  --content: 1180px;
  --display: Georgia, "Times New Roman", serif;
  --body: Inter, Aptos, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--paper);
  background: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
a { color: inherit; }
code { color: var(--brass-light); font-size: 0.9em; }

.skip-link {
  position: fixed;
  top: 0;
  left: 1rem;
  z-index: 20;
  padding: 0.75rem 1rem;
  color: var(--ink);
  background: var(--paper);
  transform: translateY(-120%);
}

.skip-link:focus { transform: translateY(0); }

.site-header,
.site-footer,
.project-facts,
.split-section,
.work-section,
.census-section,
.workflow-chart,
.definition-done,
.test-layout,
.next-page {
  width: min(calc(100% - 3rem), var(--content));
  margin-inline: auto;
}

.site-header {
  min-height: 104px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
}

.site-mark { text-decoration: none; line-height: 1.15; }
.site-mark span { display: block; font-family: var(--display); font-size: 1.25rem; letter-spacing: 0.02em; }
.site-mark small { color: var(--paper-muted); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; }

.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav a { color: var(--paper-muted); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-decoration: none; text-transform: uppercase; }
.site-nav a:hover,
.site-nav a:focus,
.site-nav a[aria-current="page"] { color: var(--brass-light); }
.nav-toggle { display: none; }

.hero {
  position: relative;
  min-height: 720px;
  display: grid;
  align-items: end;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
}

.hero-art {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(17, 18, 15, 0.98) 0%, rgba(17, 18, 15, 0.84) 38%, rgba(17, 18, 15, 0.22) 78%), url("../images/brass-bulkheads.png");
  background-position: center;
  background-size: cover;
  filter: saturate(0.82) contrast(1.05);
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 3rem), var(--content));
  margin: 0 auto;
  padding: 7rem 0 6.5rem;
}

.eyebrow,
.section-number,
.step-label {
  margin: 0 0 1rem;
  color: var(--brass-light);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1, h2, h3 { margin-top: 0; font-family: var(--display); font-weight: 400; line-height: 1.02; }
h1 { max-width: 840px; margin-bottom: 1.5rem; font-size: clamp(3.4rem, 8vw, 7.7rem); letter-spacing: -0.055em; }
h2 { font-size: clamp(2.4rem, 5vw, 4.8rem); letter-spacing: -0.045em; }
h3 { font-size: clamp(1.8rem, 3vw, 3rem); letter-spacing: -0.035em; }

.lede { max-width: 650px; margin: 0 0 2.4rem; color: #d6cebd; font-size: clamp(1.05rem, 1.5vw, 1.32rem); }
.hero-actions { display: flex; align-items: center; gap: 2rem; }

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.25rem;
  border: 1px solid var(--brass);
  color: var(--paper);
  background: var(--brass);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
}

.button:hover, .button:focus { color: var(--ink); background: var(--brass-light); border-color: var(--brass-light); }
.text-link { color: var(--paper); font-size: 0.82rem; font-weight: 750; letter-spacing: 0.08em; text-decoration: none; text-transform: uppercase; }
.text-link span { margin-left: 0.5rem; color: var(--brass-light); }

.project-facts { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--rule); }
.project-facts div { padding: 2rem 1.5rem 2rem 0; }
.project-facts div + div { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
.project-facts span, .project-facts strong { display: block; }
.project-facts span { margin-bottom: 0.35rem; color: var(--paper-muted); font-size: 0.68rem; font-weight: 800; letter-spacing: 0.15em; text-transform: uppercase; }
.project-facts strong { font-family: var(--display); font-size: 1.18rem; font-weight: 400; }

.split-section { display: grid; grid-template-columns: 1fr 1fr; gap: 8%; padding-block: 8rem; border-bottom: 1px solid var(--rule); }
.prose { padding-top: 2.1rem; color: var(--paper-muted); font-size: 1.08rem; }
.prose p:first-child { color: var(--paper); font-size: 1.32rem; }

.work-section { padding-block: 8rem; }
.section-heading { display: grid; grid-template-columns: 1.4fr 0.6fr; gap: 8%; align-items: end; margin-bottom: 5rem; }
.section-heading h2 { margin-bottom: 0; }
.section-heading > p { margin: 0 0 0.5rem; color: var(--paper-muted); }

.feature { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(290px, 0.55fr); margin-bottom: 6rem; border-top: 1px solid var(--rule); }
.feature-image { position: relative; min-height: 540px; overflow: hidden; }
.feature-image img { width: 100%; height: 100%; object-fit: cover; }
.image-label { position: absolute; top: 1rem; left: 1rem; padding: 0.45rem 0.65rem; color: var(--ink); background: var(--brass-light); font-size: 0.67rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.feature-reaver .image-label { color: var(--paper); background: var(--blood); }
.feature-copy { padding: 4rem 0 3rem 3rem; border-bottom: 1px solid var(--rule); }
.feature-copy p:not(.eyebrow) { color: var(--paper-muted); }
.status-list { margin-top: 3rem; }
.status-list div { display: flex; justify-content: space-between; gap: 1rem; padding: 0.75rem 0; border-top: 1px solid var(--rule); }
.status-list dt { color: var(--paper-muted); }
.status-list dd { margin: 0; color: var(--brass-light); font-weight: 700; }
.feature-reaver .eyebrow,
.feature-reaver .status-list dd { color: var(--blood-light); }

.workwear-row { display: grid; grid-template-columns: minmax(260px, 0.7fr) 1.3fr; gap: 5rem; align-items: center; padding: 4rem; background: var(--iron); border-left: 3px solid var(--verdigris); }
.workwear-row img { width: 100%; image-rendering: auto; }
.workwear-row h3 { margin-bottom: 1rem; }
.workwear-row p:last-child { max-width: 660px; color: var(--paper-muted); }

.census-section { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 10%; padding-block: 8rem; border-top: 1px solid var(--rule); }
.census-copy p:last-child { max-width: 480px; color: var(--paper-muted); }
.census-bars { display: grid; align-content: center; gap: 1rem; }
.census-bars div { position: relative; display: flex; justify-content: space-between; gap: 1rem; padding: 0.75rem 1rem; overflow: hidden; border: 1px solid var(--rule); }
.census-bars div::before { content: ""; position: absolute; inset: 0 auto 0 0; width: var(--size); background: rgba(184, 146, 79, 0.19); }
.census-bars span, .census-bars strong { position: relative; z-index: 1; }
.census-bars span { color: var(--paper-muted); }
.census-bars strong { color: var(--brass-light); }

.paired-callout { padding: 9rem max(1.5rem, calc((100% - var(--content)) / 2)); color: var(--paper); background: var(--blood); }
.paired-callout h2 { max-width: 950px; }
.paired-callout h2 span { color: #161210; }
.paired-callout > p:not(.eyebrow) { max-width: 700px; margin-bottom: 2.2rem; font-size: 1.15rem; }
.paired-callout .eyebrow { color: #e7b5a9; }
.button-light { color: var(--ink); background: var(--paper); border-color: var(--paper); }

.site-footer { display: flex; justify-content: space-between; gap: 2rem; padding-block: 2rem 3rem; color: var(--paper-muted); font-size: 0.75rem; }

.page-intro { width: min(calc(100% - 3rem), var(--content)); margin: 0 auto; padding: 8rem 0 6rem; border-bottom: 1px solid var(--rule); }
.page-intro h1 { max-width: 1000px; }
.page-intro > p:last-child { max-width: 700px; color: var(--paper-muted); font-size: 1.18rem; }

.workflow-chart { padding-block: 6rem; }
.workflow-steps { max-width: 1040px; margin: 0 auto; padding: 0; list-style: none; }
.workflow-step { position: relative; display: grid; grid-template-columns: 90px 1fr; gap: 2rem; padding: 2.5rem; background: var(--iron); border: 1px solid var(--rule); }
.workflow-step + .workflow-step { margin-top: 2.5rem; }
.workflow-step::after { content: "↓"; position: absolute; bottom: -2.2rem; left: 50%; color: var(--brass); font-size: 1.4rem; }
.step-number { color: var(--brass-light); font-family: var(--display); font-size: 2.4rem; }
.workflow-step h3 { margin-bottom: 0.8rem; font-size: 2.1rem; }
.workflow-step p:last-child { margin: 0; color: var(--paper-muted); }
.branch-point { position: relative; margin: 2.5rem 0; text-align: center; }
.branch-point::before { content: ""; position: absolute; top: 50%; right: 0; left: 0; border-top: 1px solid var(--brass); }
.branch-point span { position: relative; z-index: 1; padding: 0 1rem; color: var(--brass-light); background: var(--ink); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }
.workflow-pair { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin-bottom: 2.5rem; }
.workflow-pair::after { content: "↓"; position: absolute; bottom: -2.2rem; left: 50%; color: var(--brass); font-size: 1.4rem; }
.workflow-lane { padding: 2.5rem; background: var(--iron); border-top: 4px solid var(--brass); }
.reaver-lane { border-top-color: var(--blood); }
.lane-heading { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.3rem; }
.lane-heading span { color: var(--brass-light); font-family: var(--display); font-size: 1.7rem; }
.reaver-lane .lane-heading span { color: var(--blood-light); }
.lane-heading p { margin: 0; color: var(--paper-muted); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }
.workflow-lane h3 { margin-bottom: 1rem; font-size: 2rem; }
.workflow-lane > p, .workflow-lane li { color: var(--paper-muted); }
.workflow-lane ul { margin: 1.5rem 0 0; padding-left: 1.2rem; }
.compact-lane { min-height: 270px; }
.finish-step { border-color: var(--verdigris); }
.finish-step::after { display: none; }

.definition-done { padding-block: 8rem; border-top: 1px solid var(--rule); }
.done-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 4rem; border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
.done-grid p { margin: 0; padding: 2rem; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.done-grid strong, .done-grid span { display: block; }
.done-grid strong { margin-bottom: 0.4rem; color: var(--brass-light); }
.done-grid span { color: var(--paper-muted); }

.next-page { display: flex; align-items: center; justify-content: space-between; padding-block: 3rem 5rem; border-top: 1px solid var(--rule); }
.next-page > span { color: var(--paper-muted); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }
.next-page a { font-family: var(--display); font-size: clamp(1.6rem, 3vw, 2.7rem); text-decoration: none; }
.next-page a:hover, .next-page a:focus { color: var(--brass-light); }

.test-layout { display: grid; grid-template-columns: 0.58fr 1.42fr; gap: 8%; padding-block: 7rem; }
.test-rule { align-self: start; position: sticky; top: 2rem; }
.test-rule h2 { font-size: 3.1rem; }
.test-rule p:last-child { color: var(--paper-muted); }
.checklist-group { padding: 0 0 4rem; margin-bottom: 4rem; border-bottom: 1px solid var(--rule); }
.checklist-heading { display: grid; grid-template-columns: 70px 1fr; gap: 1rem; align-items: baseline; }
.checklist-heading span { color: var(--brass-light); font-family: var(--display); font-size: 1.6rem; }
.checklist-heading h2 { margin-bottom: 2rem; font-size: 2.6rem; }
.checklist { margin: 0; padding: 0; list-style: none; counter-reset: test; }
.checklist li { position: relative; padding: 1.1rem 0 1.1rem 3rem; color: var(--paper-muted); border-top: 1px solid var(--rule); }
.checklist li::before { content: "□"; position: absolute; top: 0.92rem; left: 0; color: var(--brass-light); font-size: 1.4rem; }
.stop-group { padding: 2.5rem; color: var(--paper); background: var(--blood); border: 0; }
.stop-group .checklist-heading span { color: #e7b5a9; }
.stop-group p { margin-bottom: 0; }

.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 860px) {
  .site-header { min-height: 82px; }
  .nav-toggle { display: inline-flex; padding: 0.6rem 0; color: var(--paper); background: transparent; border: 0; font: inherit; font-size: 0.75rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
  .site-nav { position: absolute; z-index: 10; top: 82px; right: 1.5rem; left: 1.5rem; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 1rem; background: var(--iron-light); border: 1px solid var(--rule); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 0.9rem; }
  .hero { min-height: 630px; }
  .hero-art { background-image: linear-gradient(0deg, rgba(17, 18, 15, 0.98) 4%, rgba(17, 18, 15, 0.58) 74%), url("../images/brass-bulkheads.png"); }
  .project-facts { grid-template-columns: 1fr 1fr; }
  .project-facts div:nth-child(3) { border-left: 0; }
  .split-section, .section-heading, .feature, .census-section, .test-layout { grid-template-columns: 1fr; }
  .section-heading { gap: 1rem; }
  .feature-copy { padding: 3rem 0; }
  .feature-image { min-height: 390px; }
  .workwear-row { grid-template-columns: 1fr; gap: 2rem; padding: 2.5rem; }
  .test-rule { position: static; }
  .done-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .site-header, .site-footer, .project-facts, .split-section, .work-section, .census-section, .workflow-chart, .definition-done, .test-layout, .next-page, .page-intro, .hero-copy { width: min(calc(100% - 2rem), var(--content)); }
  .hero-copy { padding-block: 5rem 4.5rem; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 1.3rem; }
  .project-facts { grid-template-columns: 1fr; }
  .project-facts div, .project-facts div + div { padding: 1.2rem 0; border-left: 0; border-top: 1px solid var(--rule); }
  .split-section, .work-section, .census-section, .definition-done, .test-layout { padding-block: 5rem; }
  .feature { margin-bottom: 4rem; }
  .feature-image { min-height: 270px; }
  .workflow-step { grid-template-columns: 1fr; gap: 0.8rem; padding: 1.6rem; }
  .workflow-pair { grid-template-columns: 1fr; }
  .workflow-lane { padding: 1.6rem; }
  .done-grid { grid-template-columns: 1fr; }
  .site-footer, .next-page { align-items: flex-start; flex-direction: column; }
}

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