:root {
  color-scheme: dark;
  --ink: #f2e7d6;
  --paper: #090d14;
  --paper-soft: #101620;
  --paper-blue: #121d2b;
  --line: #394352;
  --muted: #aab3bf;
  --amber: #e2ae65;
  --amber-bright: #f3c985;
  --blue: #9db8cb;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --content: 1180px;
  --measure: 720px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(9, 13, 20, .18), rgba(9, 13, 20, .18)),
    url("assets/images/snack-outline-pattern.webp");
  background-position: 0 0, center top;
  background-size: auto, 760px 760px;
  background-attachment: scroll, fixed;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { color: var(--amber-bright); }
button, input { font: inherit; }
button { color: inherit; }
::selection { background: var(--amber); color: #11151b; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  background: var(--amber-bright);
  color: #11151b;
  padding: .65rem 1rem;
}
.skip-link:focus { top: 1rem; }

.shell { width: min(calc(100% - 2rem), var(--content)); margin-inline: auto; }
.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 13, 20, .96);
}
.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.brand { display: flex; align-items: baseline; gap: 1rem; text-decoration: none; }
.brand strong { font-weight: 500; font-size: 1.15rem; letter-spacing: .015em; }
.brand span { color: var(--muted); font-family: var(--sans); font-size: .73rem; letter-spacing: .09em; text-transform: uppercase; }
.primary-nav { display: flex; align-items: center; gap: 1.5rem; font-family: var(--sans); font-size: .82rem; }
.primary-nav a { text-decoration: none; color: var(--muted); }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { color: var(--ink); }
.nav-toggle { display: none; background: transparent; border: 1px solid var(--line); padding: .45rem .7rem; font-family: var(--sans); font-size: .78rem; }

.eyebrow, .kicker, .meta-line, .figure-caption, .card-meta, .note-label, .story-date, .filter-button, .crumbs, .spec-table dt, .chapter-no {
  font-family: var(--sans);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.eyebrow, .kicker, .story-date, .chapter-no { color: var(--amber); }
h1, h2, h3 { font-weight: 500; line-height: 1.08; margin: 0; }
h1 { font-size: clamp(2.5rem, 7vw, 6.7rem); letter-spacing: -.04em; }
h2 { font-size: clamp(2rem, 4.5vw, 4rem); letter-spacing: -.025em; }
h3 { font-size: 1.4rem; }
p { margin: 0; }
.lede { color: #e9dfcf; font-size: clamp(1.05rem, 2vw, 1.35rem); line-height: 1.5; }
.muted { color: var(--muted); }
.text-link { display: inline-block; color: var(--amber-bright); }

.hero { min-height: 720px; position: relative; display: flex; align-items: flex-end; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero-media, .hero-shade { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-media { object-fit: cover; object-position: center; }
.hero-shade { background: linear-gradient(90deg, rgba(4, 8, 15, .96) 0%, rgba(4, 8, 15, .73) 36%, rgba(4, 8, 15, .14) 75%), linear-gradient(0deg, rgba(4, 8, 15, .86), transparent 45%); }
.hero-copy { position: relative; z-index: 2; width: min(760px, 100%); padding: 7rem 0 4.5rem; display: grid; gap: 1.3rem; }
.hero-copy h1 { font-size: clamp(3rem, 7.5vw, 7rem); }
.hero-copy .lede { max-width: 650px; }

.evidence-strip { border-bottom: 1px solid var(--line); background: var(--paper-soft); }
.evidence-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.evidence-item { padding: 1.2rem 1.4rem; border-right: 1px solid var(--line); display: grid; gap: .25rem; }
.evidence-item:first-child { padding-left: 0; }
.evidence-item:last-child { border-right: 0; }
.evidence-item span { color: var(--muted); font-family: var(--sans); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.evidence-item strong { font-weight: 500; }

.section { padding: 7rem 0; }
.section-tight { padding: 4rem 0; }
.section-head { display: grid; grid-template-columns: .8fr 2.2fr; gap: 2rem; margin-bottom: 3rem; align-items: start; }
.section-head .lede { max-width: var(--measure); }
.split-feature { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.feature-panel { background: var(--paper); }
.feature-panel img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.feature-copy { padding: 2rem; display: grid; gap: 1rem; }
.feature-copy p { color: var(--muted); }

.archive-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.snack-card { display: flex; flex-direction: column; min-width: 0; background: var(--paper-soft); border: 1px solid var(--line); text-decoration: none; color: inherit; transition: transform .2s ease, border-color .2s ease; }
.snack-card:hover { transform: translateY(-3px); border-color: var(--amber); color: inherit; }
.snack-card[hidden] { display: none; }
.snack-card img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.card-body { padding: 1.25rem; display: grid; gap: .7rem; flex: 1; }
.card-meta { color: var(--amber); }
.card-body p { color: var(--muted); font-size: .95rem; }
.card-footer { display: flex; justify-content: space-between; gap: 1rem; padding: 0 1.25rem 1.25rem; color: var(--muted); font-family: var(--sans); font-size: .75rem; }

.story-panel { border: 1px solid var(--line); background: var(--paper-blue); display: grid; grid-template-columns: 1.1fr .9fr; }
.story-panel img { width: 100%; height: 100%; min-height: 500px; object-fit: cover; }
.story-panel-copy { padding: clamp(2rem, 5vw, 5rem); display: flex; flex-direction: column; justify-content: center; gap: 1.4rem; }
.progress-track { height: 2px; background: var(--line); margin-top: .6rem; }
.progress-track span { display: block; width: 46%; height: 100%; background: var(--amber); }

.page-intro { padding: 6rem 0 3.5rem; border-bottom: 1px solid var(--line); }
.page-intro-inner { display: grid; grid-template-columns: .75fr 2.25fr; gap: 2rem; align-items: end; }
.page-intro h1 { font-size: clamp(3rem, 8vw, 7rem); }
.page-intro .lede { max-width: var(--measure); margin-top: 1.5rem; }
.crumbs { color: var(--muted); margin-bottom: 1rem; }
.crumbs a { color: var(--amber); }

.filters { display: flex; flex-wrap: wrap; gap: .65rem; margin-bottom: 2rem; }
.filter-button { background: transparent; border: 1px solid var(--line); padding: .65rem .9rem; cursor: pointer; }
.filter-button:hover, .filter-button[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.filter-result { color: var(--muted); font-family: var(--sans); font-size: .8rem; margin-left: auto; align-self: center; }

.timeline { border-top: 1px solid var(--line); }
.chapter { display: grid; grid-template-columns: 120px 1fr 1.2fr; gap: 2rem; padding: 2.3rem 0; border-bottom: 1px solid var(--line); }
.chapter h2 { font-size: clamp(1.7rem, 3vw, 2.7rem); }
.chapter p { color: var(--muted); }
.chapter a { color: var(--amber-bright); }

.prose { width: min(100%, var(--measure)); margin-inline: auto; }
.prose > * + * { margin-top: 1.5rem; }
.prose h2 { margin-top: 4rem; }
.prose h3 { margin-top: 2.5rem; }
.prose p, .prose li { color: #ddd4c6; }
.prose blockquote { margin: 3rem 0; padding: 1.5rem 0 1.5rem 2rem; border-left: 2px solid var(--amber); font-size: 1.5rem; color: var(--ink); }
.prose ul { padding-left: 1.4rem; }

.owner-portrait { display: grid; grid-template-columns: 1.15fr .85fr; min-height: 650px; border-bottom: 1px solid var(--line); }
.owner-portrait img { width: 100%; height: 100%; object-fit: cover; }
.owner-copy { background: var(--paper-blue); padding: clamp(2rem, 6vw, 6rem); display: flex; flex-direction: column; justify-content: center; gap: 1.5rem; }
.owner-facts { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.owner-facts div { padding: 1.25rem; border-right: 1px solid var(--line); }
.owner-facts div:last-child { border-right: 0; }
.owner-facts span { display: block; color: var(--muted); font-family: var(--sans); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }

.article-hero { position: relative; min-height: 680px; display: flex; align-items: flex-end; border-bottom: 1px solid var(--line); }
.article-hero img, .article-hero-shade { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.article-hero-shade { background: linear-gradient(0deg, rgba(4, 8, 15, .98), rgba(4, 8, 15, .12) 72%); }
.article-hero-copy { position: relative; z-index: 2; padding: 10rem 0 3.5rem; max-width: 920px; display: grid; gap: 1rem; }
.article-hero h1 { font-size: clamp(3rem, 8vw, 7rem); }
.article-layout { display: grid; grid-template-columns: 300px minmax(0, var(--measure)); gap: clamp(2rem, 6vw, 7rem); align-items: start; padding: 5rem 0 7rem; }
.spec-table { margin: 0; border-top: 1px solid var(--line); }
.spec-table div { padding: 1rem 0; border-bottom: 1px solid var(--line); }
.spec-table dt { color: var(--muted); }
.spec-table dd { margin: .2rem 0 0; }
.rating { color: var(--amber); letter-spacing: .12em; }
.article-prose > * + * { margin-top: 1.5rem; }
.article-prose h2 { margin-top: 3.5rem; font-size: clamp(1.9rem, 4vw, 3.2rem); }
.article-prose p { color: #ddd4c6; }
.article-prose blockquote { margin: 3rem 0; padding: 1.5rem 0 1.5rem 2rem; border-left: 2px solid var(--amber); font-size: 1.45rem; }
.field-note { margin-top: 3rem; padding: 1.5rem; border: 1px solid var(--line); background: var(--paper-soft); }
.field-note p { color: var(--muted); }
.entry-nav { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.entry-nav a { padding: 2rem max(1rem, calc((100vw - var(--content)) / 2)); text-decoration: none; }
.entry-nav a + a { border-left: 1px solid var(--line); text-align: right; }
.entry-nav span { display: block; color: var(--muted); font-family: var(--sans); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }

.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.method-card { background: var(--paper-soft); padding: 2rem; display: grid; gap: 1rem; }
.method-card .method-number { color: var(--amber); font-family: var(--sans); }
.method-card p { color: var(--muted); }
.definition-list { border-top: 1px solid var(--line); }
.definition { display: grid; grid-template-columns: .8fr 2fr; gap: 2rem; padding: 1.4rem 0; border-bottom: 1px solid var(--line); }
.definition p { color: var(--muted); }

.site-footer { border-top: 1px solid var(--line); padding: 3rem 0; background: #070a10; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 3rem; }
.footer-grid h2 { font-size: 1.4rem; margin-bottom: .7rem; }
.footer-grid p, .footer-grid a { color: var(--muted); }
.footer-nav { display: grid; gap: .45rem; align-content: start; }
.footer-note { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 2rem; color: var(--muted); font-family: var(--sans); font-size: .72rem; }

.not-found { min-height: 70vh; display: grid; place-items: center; text-align: center; }
.not-found div { max-width: 700px; display: grid; gap: 1.2rem; }

@media (max-width: 900px) {
  .archive-grid { grid-template-columns: repeat(2, 1fr); }
  .section-head, .page-intro-inner { grid-template-columns: 1fr; }
  .story-panel, .owner-portrait { grid-template-columns: 1fr; }
  .story-panel img, .owner-portrait img { min-height: 420px; max-height: 620px; }
  .article-layout { grid-template-columns: 1fr; }
  .spec-table { display: grid; grid-template-columns: repeat(2, 1fr); }
  .spec-table div { padding-right: 1rem; }
  .chapter { grid-template-columns: 90px 1fr; }
  .chapter p { grid-column: 2; }
}

@media (max-width: 700px) {
  body { font-size: 17px; background-size: auto, 620px 620px; background-attachment: scroll; }
  .header-inner { min-height: 68px; }
  .brand span { display: none; }
  .nav-toggle { display: block; }
  .primary-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--paper-soft); border-bottom: 1px solid var(--line); padding: 1rem; flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav.is-open { display: flex; }
  .primary-nav a { padding: .8rem max(1rem, calc((100vw - var(--content)) / 2)); }
  .hero { min-height: 700px; }
  .hero-shade { background: linear-gradient(0deg, rgba(4, 8, 15, .97) 0%, rgba(4, 8, 15, .55) 58%, rgba(4, 8, 15, .12)); }
  .hero-copy { padding: 14rem 0 3rem; }
  .evidence-grid { grid-template-columns: 1fr; }
  .evidence-item { border-right: 0; border-bottom: 1px solid var(--line); padding: 1rem 0; }
  .evidence-item:last-child { border-bottom: 0; }
  .section { padding: 4.5rem 0; }
  .split-feature, .archive-grid { grid-template-columns: 1fr; }
  .story-panel img, .owner-portrait img { min-height: 330px; }
  .page-intro { padding: 4rem 0 2.5rem; }
  .filters { align-items: stretch; }
  .filter-result { width: 100%; margin-left: 0; }
  .chapter { grid-template-columns: 1fr; gap: .65rem; }
  .chapter p { grid-column: 1; }
  .owner-facts { grid-template-columns: 1fr; }
  .owner-facts div { border-right: 0; border-bottom: 1px solid var(--line); }
  .owner-facts div:last-child { border-bottom: 0; }
  .article-hero { min-height: 620px; }
  .article-hero-shade { background: linear-gradient(0deg, rgba(4, 8, 15, .98), rgba(4, 8, 15, .25) 80%); }
  .article-layout { padding: 3rem 0 4rem; }
  .spec-table { grid-template-columns: 1fr; }
  .entry-nav { grid-template-columns: 1fr; }
  .entry-nav a + a { border-left: 0; border-top: 1px solid var(--line); text-align: left; }
  .method-grid { grid-template-columns: 1fr; }
  .definition { grid-template-columns: 1fr; gap: .5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-note { flex-direction: column; gap: .5rem; }
}

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