:root {
    --ink-900: #172d39;
    --ink-800: #243e4a;
    --ink-600: #596570;
    --paper-100: #faf8f3;
    --paper-200: #f2eee5;
    --paper-300: #e5e0d5;
    --white: #ffffff;
    --copper-700: #975c32;
    --copper-300: #deab72;
    --sage-300: #b7c6b0;
    --space-1: .25rem;
    --space-2: .5rem;
    --space-3: .75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --color-background: var(--paper-100);
    --color-surface: var(--white);
    --color-foreground: var(--ink-900);
    --color-muted: var(--ink-600);
    --color-border: var(--paper-300);
    --color-accent: var(--copper-700);
    --color-inverse: var(--paper-100);
    --color-inverse-muted: var(--paper-300);
    --color-subtle: var(--paper-200);
    --font-body: Inter, "Segoe UI", Arial, sans-serif;
    --font-heading: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
    --font-small: .8125rem;
    --font-label: .6875rem;
    --space-section: var(--space-20);
    --button-bg: var(--color-foreground);
    --button-color: var(--color-inverse);
    --button-hover: var(--ink-800);
    --field-bg: var(--color-surface);
    --field-border: var(--color-border);
    --card-bg: var(--color-surface);
    --card-border: var(--color-border);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 2rem; }
body { margin: 0; background: var(--color-background); color: var(--color-foreground); font: 1rem/1.6 var(--font-body); -webkit-font-smoothing: antialiased; }
::selection { background: var(--paper-300); color: var(--color-foreground); }
main { min-height: 60vh; }
img, svg { max-width: 100%; }
a { color: inherit; text-underline-offset: .22em; }
button, input, select { font: inherit; }
button, a, input, select, summary { -webkit-tap-highlight-color: transparent; }
button, select, summary { cursor: pointer; }
button { border-radius: 0; }
input, select { min-width: 0; }
input, select, button { max-width: 100%; }
:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 5px; }
h1, h2, h3, p, dl, dd { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
h1, h2 { font-family: var(--font-heading); font-weight: 400; }
h1 { font-size: clamp(2.75rem, 5.4vw, 5rem); line-height: 1.06; letter-spacing: -.055em; }
h2 { font-size: clamp(2rem, 3vw, 2.8rem); line-height: 1.16; letter-spacing: -.035em; }
h3 { font-weight: 500; line-height: 1.35; }
em { color: var(--color-accent); font-weight: inherit; }
.container { width: min(1240px, calc(100% - 6rem)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 20; top: 1rem; left: 1rem; padding: var(--space-3) var(--space-5); background: var(--color-foreground); color: var(--color-inverse); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-top: 3px solid var(--color-foreground); border-bottom: 1px solid var(--color-border); }
.header-inner { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: var(--space-8); }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); color: var(--color-foreground); text-decoration: none; font-size: 1.3rem; font-weight: 700; letter-spacing: -.065em; white-space: nowrap; }
.brand-mark { flex: 0 0 38px; }
.brand-second { font-weight: 400; }
.brand-domain { color: var(--color-accent); font-weight: 400; }
.main-nav { display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2rem); font-size: var(--font-small); }
.main-nav a { display: inline-flex; align-items: center; gap: var(--space-2); min-height: 44px; text-decoration: none; }
.main-nav a[aria-current] { text-decoration: underline; text-decoration-thickness: 2px; text-decoration-color: var(--color-accent); }
.main-nav a:hover, .text-link:hover, .source-link:hover, .footer-main nav a:hover { color: var(--color-accent); }
.main-nav .nav-related { margin-left: var(--space-2); padding-left: var(--space-6); border-left: 1px solid var(--color-border); color: var(--color-muted); }
.eyebrow { display: block; font-size: var(--font-label); line-height: 1.7; font-weight: 600; letter-spacing: .13em; text-transform: uppercase; }
.hero { padding: var(--space-20) 0 var(--space-20); border-bottom: 1px solid var(--color-border); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(300px, .9fr); align-items: center; gap: clamp(2.5rem, 6vw, 6rem); }
.hero-copy > .eyebrow { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-8); }
.eyebrow-line { height: 1px; width: 28px; background: var(--color-accent); flex: 0 0 28px; }
.hero h1 { margin-bottom: var(--space-6); }
.hero-description { max-width: 35rem; color: var(--color-muted); line-height: 1.85; font-size: 1rem; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-8); margin-top: var(--space-8); }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: var(--space-6); padding: .85rem 1.35rem; border: 1px solid transparent; text-decoration: none; font-size: var(--font-small); font-weight: 600; line-height: 1.4; transition: background-color .15s, color .15s, border-color .15s; }
.button-primary { color: var(--button-color); background: var(--button-bg); border-color: var(--button-bg); }
.button-primary:hover { background: var(--button-hover); border-color: var(--button-hover); }
.button-outline { color: var(--color-foreground); border-color: var(--color-foreground); background: transparent; }
.button-outline:hover { background: var(--color-foreground); color: var(--color-inverse); }
.text-link { min-height: 44px; display: inline-flex; gap: var(--space-4); align-items: center; font-size: var(--font-small); font-weight: 500; }
.archive-summary { position: relative; padding: var(--space-8); color: var(--color-inverse); background: var(--color-foreground); border: 1px solid var(--color-foreground); }
.archive-summary::before { content: ""; position: absolute; top: 8px; bottom: -9px; left: 8px; right: -9px; z-index: -1; border: 1px solid var(--color-border); }
.summary-top { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.summary-top .eyebrow { max-width: 150px; font-size: .625rem; color: var(--color-inverse-muted); }
.summary-emblem { display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid var(--ink-600); border-radius: 50%; font: italic 1rem var(--font-heading); }
.summary-years { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding-block: var(--space-6) var(--space-5); font: 2.65rem/1.2 var(--font-heading); letter-spacing: -.055em; }
.summary-years > span { color: var(--copper-300); font-family: var(--font-body); font-size: 1.5rem; font-weight: 300; }
.summary-stats > div { display: flex; flex-direction: row-reverse; justify-content: flex-end; align-items: center; gap: var(--space-6); padding-block: var(--space-4); border-top: 1px solid var(--ink-600); }
.summary-stats dt { font-size: var(--font-small); color: var(--color-inverse-muted); }
.summary-stats dd { min-width: 3.2rem; font: 2rem/1.15 var(--font-heading); font-variant-numeric: tabular-nums; }
.collection-status { display: flex; align-items: center; gap: var(--space-2); margin-top: var(--space-5); font-size: .6875rem; letter-spacing: .045em; color: var(--color-inverse-muted); }
.collection-status > span { width: 6px; height: 6px; border-radius: 50%; background: var(--sage-300); }
.archive-section { padding-block: var(--space-section); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: var(--space-8); margin-bottom: var(--space-8); }
.section-heading .eyebrow { margin-bottom: var(--space-3); color: var(--color-accent); }
.section-heading > p { font-size: var(--font-small); color: var(--color-muted); line-height: 1.7; }
.archive-filters { display: grid; grid-template-columns: minmax(200px, 1.5fr) minmax(150px, 1fr) minmax(130px, 1fr); align-items: end; gap: var(--space-4); padding: var(--space-6); background: var(--color-subtle); border: 1px solid var(--color-border); }
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field label { font-size: var(--font-label); font-weight: 600; }
.field input, .field select { width: 100%; height: 48px; border: 1px solid var(--field-border); border-radius: 0; background: var(--field-bg); color: var(--color-foreground); padding: 0 var(--space-3); font-size: var(--font-small); }
.field input::placeholder { color: var(--color-muted); opacity: 1; }
.field select { padding-right: var(--space-6); }
.search-input-wrap { position: relative; }
.search-input-wrap > svg { position: absolute; left: 13px; top: 14px; pointer-events: none; color: var(--color-muted); }
.search-input-wrap > input { padding-left: 42px; }
.results-meta { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); padding: var(--space-6) 0 var(--space-4); font-size: .75rem; color: var(--color-muted); }
.results-meta strong { font-weight: 600; color: var(--color-foreground); }
.results-meta a { display: inline-flex; gap: var(--space-3); align-items: center; min-height: 32px; color: var(--color-foreground); }
.program-list { border-top: 1px solid var(--color-foreground); }
.program-row { position: relative; display: flex; align-items: center; gap: var(--space-6); border-bottom: 1px solid var(--color-border); padding: var(--space-8) var(--space-4); transition: background-color .15s; }
.program-row:hover, .program-row:focus-within { background: var(--color-subtle); }
.document-icon { display: grid; place-items: center; width: 60px; height: 70px; flex: 0 0 60px; background: var(--color-subtle); color: var(--color-accent); }
.program-row-main { flex: 1; min-width: 0; }
.program-author { color: var(--color-muted); font-size: .6875rem; line-height: 1.5; letter-spacing: .07em; text-transform: uppercase; margin-bottom: var(--space-2); }
.program-row h3 { font-family: var(--font-heading); font-size: 1.55rem; line-height: 1.25; letter-spacing: -.025em; overflow-wrap: anywhere; }
.program-row h3 a { text-decoration: none; }
.program-row h3 a::after { content: ""; position: absolute; inset: 0; }
.program-row h3 a:focus-visible { outline: none; }
.program-row:has(a:focus-visible) { outline: 3px solid var(--color-accent); outline-offset: -3px; }
.record-meta { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2) var(--space-4); margin-top: var(--space-3); font-size: .75rem; color: var(--color-muted); }
.record-meta > span + span { border-left: 1px solid var(--color-border); padding-left: var(--space-4); }
.record-meta .tag { padding: .25rem .6rem; border: 1px solid var(--color-border); color: var(--color-foreground); }
.row-open { display: flex; align-items: center; gap: var(--space-6); font-size: .75rem; white-space: nowrap; }
.row-open > span { font-size: 1.25rem; }
.pagination { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); margin-top: var(--space-8); font-size: var(--font-small); }
.pagination-direction { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-4); min-height: 44px; min-width: 110px; padding: var(--space-2) var(--space-4); border: 1px solid var(--color-border); text-decoration: none; }
.pagination-direction:not(.is-disabled):hover { border-color: var(--color-foreground); }
.pagination-direction.is-disabled { color: var(--color-muted); opacity: .55; }
.pagination-status { color: var(--color-muted); text-align: center; }
.pagination-status strong { font-weight: 600; color: var(--color-foreground); }
.coverage-section { padding-block: var(--space-section); background: var(--color-subtle); border-block: 1px solid var(--color-border); }
.coverage-legend { display: flex; gap: var(--space-6); margin-bottom: var(--space-5); font-size: .6875rem; color: var(--color-muted); }
.coverage-legend > span { display: inline-flex; align-items: center; gap: var(--space-2); }
.legend-mark { width: 9px; height: 9px; border: 1px solid var(--color-muted); }
.legend-mark.is-covered { border-color: var(--color-foreground); background: var(--color-foreground); }
.year-grid { display: grid; grid-template-columns: repeat(10, minmax(0, 1fr)); gap: var(--space-2); margin: 0; padding: 0; list-style: none; }
.year-cell { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: var(--space-2); min-height: 86px; padding: var(--space-3) var(--space-1); border: 1px solid var(--color-border); background: var(--color-background); }
.year-number { font: 1.25rem/1.1 var(--font-heading); }
.year-count { font-size: .625rem; color: var(--color-muted); font-variant-numeric: tabular-nums; }
.year-cell.is-covered { background: var(--color-foreground); color: var(--color-inverse); border-color: var(--color-foreground); }
.year-cell.is-covered .year-count { color: var(--color-inverse-muted); }
.coverage-note { max-width: 55rem; margin-top: var(--space-5); font-size: .75rem; color: var(--color-muted); line-height: 1.8; }
.source-callout { display: flex; align-items: center; gap: var(--space-10); padding-block: var(--space-section); }
.source-callout-number { flex: 0 0 66px; align-self: start; margin-top: -.45rem; font: 7rem/.7 var(--font-heading); color: var(--color-accent); }
.source-callout > div { flex: 1; }
.source-callout .eyebrow { color: var(--color-accent); margin-bottom: var(--space-3); }
.source-callout h2 { font-size: 2.1rem; }
.source-callout p:not(.eyebrow) { max-width: 42rem; margin-top: var(--space-4); font-size: .875rem; line-height: 1.8; color: var(--color-muted); }
.source-callout .button { flex-shrink: 0; }
.site-footer { padding-top: var(--space-12); background: var(--color-foreground); color: var(--color-inverse); }
.footer-main { display: grid; grid-template-columns: 1fr 1.1fr 1fr; align-items: start; gap: var(--space-12); padding-bottom: var(--space-12); }
.footer-brand { text-decoration: none; font-family: var(--font-heading); font-size: 1.5rem; letter-spacing: -.04em; }
.footer-main p { margin-top: var(--space-2); font-size: .75rem; color: var(--color-inverse-muted); line-height: 1.9; }
.footer-main .footer-description { margin-top: 0; max-width: 25rem; }
.footer-main nav { display: flex; flex-direction: column; align-items: end; gap: var(--space-2); font-size: .75rem; }
.footer-main nav a { min-height: 32px; display: inline-flex; align-items: center; justify-content: space-between; gap: var(--space-4); text-decoration: none; }
.footer-main nav a:hover { color: var(--copper-300); }
.footer-bottom { display: flex; justify-content: space-between; gap: var(--space-5); padding-block: var(--space-5); border-top: 1px solid var(--ink-600); font-size: .625rem; color: var(--color-inverse-muted); letter-spacing: .025em; }
.breadcrumbs { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-3); padding-top: var(--space-8); font-size: .75rem; line-height: 1.8; color: var(--color-muted); }
.breadcrumbs a { overflow-wrap: anywhere; }
.breadcrumbs a:first-child { flex-shrink: 0; }
.breadcrumbs span[aria-current] { color: var(--color-foreground); }
.document-header { max-width: 960px; padding-block: var(--space-12) var(--space-12); }
.document-header > .eyebrow { color: var(--color-accent); margin-bottom: var(--space-5); }
.document-header h1 { font-size: clamp(2.5rem, 4.7vw, 4.25rem); overflow-wrap: anywhere; }
.document-header > .record-meta { margin-top: var(--space-6); font-size: var(--font-small); }
.program-detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; align-items: start; gap: var(--space-16); padding-bottom: var(--space-section); border-top: 1px solid var(--color-border); padding-top: var(--space-10); }
.section-heading.compact { margin-bottom: var(--space-6); }
.section-heading.compact h2 { font-size: 2rem; }
.edition-list { display: grid; gap: var(--space-5); }
.edition-card { padding: var(--space-6); border: 1px solid var(--card-border); background: var(--card-bg); }
.edition-card-top { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-5); }
.file-type { display: inline-flex; padding: .25rem .5rem; border: 1px solid var(--color-border); font-size: .625rem; font-weight: 600; letter-spacing: .04em; }
.edition-date { color: var(--color-muted); font-size: .75rem; }
.edition-card h3 { font-family: var(--font-heading); font-size: 1.6rem; letter-spacing: -.025em; overflow-wrap: anywhere; }
.edition-card h3 a { text-decoration: none; }
.edition-card h3 a:hover { text-decoration: underline; }
.edition-card-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-5); padding-top: var(--space-3); border-top: 1px solid var(--color-border); }
.source-link { display: inline-flex; align-items: center; gap: var(--space-3); font-size: .75rem; min-height: 44px; color: var(--color-muted); }
.provenance { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-2) var(--space-5); margin-top: var(--space-4); font-size: .6875rem; line-height: 1.8; color: var(--color-muted); }
.context-panel { padding: var(--space-6); background: var(--color-subtle); border-top: 2px solid var(--color-accent); }
.context-panel h2 { margin-top: var(--space-5); font-size: 1.8rem; }
.context-panel p { margin-top: var(--space-4); font-size: .8125rem; color: var(--color-muted); line-height: 1.85; }
.context-panel .text-link { margin-top: var(--space-4); }
.document-subtitle { margin-top: var(--space-5); color: var(--color-muted); font-size: 1.125rem; line-height: 1.8; max-width: 44rem; }
.document-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-6); margin-top: var(--space-8); }
.document-note { padding: var(--space-5) var(--space-6); margin-bottom: var(--space-10); background: var(--color-subtle); border-left: 2px solid var(--color-accent); }
.document-note .eyebrow { color: var(--color-accent); }
.document-note > p + p { margin-top: var(--space-2); white-space: pre-line; overflow-wrap: anywhere; font-size: .875rem; }
.reader-layout { display: grid; grid-template-columns: 245px minmax(0, 1fr); align-items: start; gap: var(--space-16); border-top: 1px solid var(--color-border); padding-top: var(--space-10); }
.reader-sidebar { position: sticky; top: var(--space-8); max-height: calc(100vh - 4rem); overflow-y: auto; padding: 5px; margin: -5px; }
.chapter-toc { list-style: none; padding: 0; margin: var(--space-4) 0 0; }
.chapter-toc li { border-bottom: 1px solid var(--color-border); }
.chapter-toc a { display: flex; align-items: baseline; gap: var(--space-3); padding-block: var(--space-3); min-height: 44px; font-size: .75rem; line-height: 1.8; text-decoration: none; }
.chapter-toc a:hover { color: var(--color-accent); }
.chapter-toc-number { color: var(--color-muted); flex-shrink: 0; min-width: 1rem; }
.reader-source-note { margin-top: var(--space-6); color: var(--color-muted); font-size: .6875rem; line-height: 1.85; }
.reader-intro { margin-bottom: var(--space-8); }
.reader-intro > .eyebrow { color: var(--color-accent); margin-bottom: var(--space-3); }
.reader-intro h2 { font-size: 2.3rem; }
.reader-intro > p:last-child { max-width: 48rem; color: var(--color-muted); font-size: .875rem; line-height: 1.85; margin-top: var(--space-3); }
.chapter { border: 1px solid var(--color-border); margin-bottom: var(--space-4); background: var(--color-surface); scroll-margin-top: var(--space-6); }
.chapter > summary { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); padding: var(--space-6); list-style: none; }
.chapter > summary::-webkit-details-marker { display: none; }
.chapter > summary:hover { background: var(--color-subtle); }
.chapter-title { display: flex; align-items: baseline; gap: var(--space-4); font-family: var(--font-heading); font-size: 1.45rem; line-height: 1.35; letter-spacing: -.02em; }
.chapter-number { color: var(--color-accent); font: .875rem var(--font-body); flex-shrink: 0; }
.chapter-toggle { display: grid; place-items: center; width: 26px; height: 26px; flex: 0 0 26px; border: 1px solid var(--color-border); color: var(--color-muted); font-size: 1.25rem; line-height: 1; font-weight: 300; }
.chapter[open] > summary { border-bottom: 1px solid var(--color-border); }
.chapter[open] > summary .chapter-toggle { transform: rotate(45deg); }
.chapter-body { padding-inline: var(--space-8); }
.measure { padding-block: var(--space-8); scroll-margin-top: var(--space-6); overflow-wrap: anywhere; }
.measure + .measure { border-top: 1px solid var(--color-border); }
.measure-meta { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); font-size: .625rem; letter-spacing: .05em; color: var(--color-muted); }
.measure-meta:not(:empty) { margin-bottom: var(--space-4); }
.measure h3 { font-family: var(--font-heading); font-size: 1.4rem; margin-bottom: var(--space-4); }
.original-text { font-family: var(--font-heading); font-size: 1.1rem; line-height: 1.85; white-space: pre-line; overflow-wrap: anywhere; }
.measure-permalink { display: inline-flex; align-items: center; gap: var(--space-3); min-height: 36px; margin-top: var(--space-4); font-size: .625rem; color: var(--color-muted); }
.muted-text { color: var(--color-muted); font-size: .875rem; padding-block: var(--space-6); }
.page-reader { width: min(100%, 850px); margin-inline: auto; border-top: 1px solid var(--color-border); padding-top: var(--space-10); }
.document-page { background: var(--color-surface); border: 1px solid var(--color-border); padding: var(--space-10); margin-bottom: var(--space-6); }
.document-page h3 { font: 600 var(--font-label) var(--font-body); color: var(--color-muted); letter-spacing: .1em; text-transform: uppercase; padding-bottom: var(--space-5); margin-bottom: var(--space-6); border-bottom: 1px solid var(--color-border); }
.page-notice { padding: var(--space-4); margin-bottom: var(--space-6); border-left: 2px solid var(--color-accent); background: var(--color-subtle); font-size: .8125rem; line-height: 1.8; overflow-wrap: anywhere; }
.document-block-heading { margin: var(--space-8) 0 var(--space-4); font-family: var(--font-heading); font-size: 1.4rem; font-weight: 500; line-height: 1.4; overflow-wrap: anywhere; }
.document-block-paragraph, .document-block-list { font-family: var(--font-heading); font-size: 1.1rem; line-height: 1.85; overflow-wrap: anywhere; margin-block: var(--space-4); }
.document-block-paragraph { white-space: pre-line; }
.document-block-paragraph.preserve-layout { font: .8125rem/1.8 ui-monospace, Consolas, monospace; white-space: pre-wrap; tab-size: 4; }
.document-block-list { padding-left: var(--space-6); }
.document-block-list li + li { margin-top: var(--space-3); }
.document-table-scroll { max-width: 100%; overflow-x: auto; margin-block: var(--space-6); border: 1px solid var(--color-border); }
.document-table { width: 100%; min-width: 400px; border-collapse: collapse; font-size: .8125rem; line-height: 1.75; }
.document-table th, .document-table td { min-width: 120px; padding: var(--space-3) var(--space-4); text-align: left; vertical-align: top; white-space: pre-line; overflow-wrap: anywhere; border-right: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.document-table th { font-weight: 600; background: var(--color-subtle); }
.document-table tr > :last-child { border-right: 0; }
.document-table tbody tr:last-child td { border-bottom: 0; }
.document-page > :last-child { margin-bottom: 0; }
.back-to-archive { padding-block: var(--space-12) var(--space-section); }
.methodology-header { padding-bottom: var(--space-16); }
.methodology-layout { display: grid; grid-template-columns: 240px minmax(0, 760px); gap: var(--space-16); border-top: 1px solid var(--color-border); padding-top: var(--space-10); }
.methodology-nav { display: flex; flex-direction: column; align-items: start; gap: var(--space-2); position: sticky; align-self: start; top: var(--space-8); }
.methodology-nav > .eyebrow { margin-bottom: var(--space-3); color: var(--color-muted); }
.methodology-nav a { min-height: 44px; display: flex; align-items: center; font-size: var(--font-small); text-decoration: none; }
.methodology-nav a:hover { color: var(--color-accent); text-decoration: underline; }
.methodology-content section { padding-bottom: var(--space-10); margin-bottom: var(--space-10); border-bottom: 1px solid var(--color-border); scroll-margin-top: var(--space-8); }
.methodology-content section:last-child { margin-bottom: 0; }
.section-number { display: block; margin-bottom: var(--space-3); color: var(--color-accent); font-size: var(--font-small); }
.methodology-content h2 { font-size: 2rem; margin-bottom: var(--space-6); }
.methodology-content p { margin-top: var(--space-4); font-size: .9375rem; line-height: 1.9; color: var(--color-muted); }
.methodology-definitions { margin-block: var(--space-8); }
.methodology-definitions > div { display: grid; grid-template-columns: 110px 1fr; gap: var(--space-6); border-top: 1px solid var(--color-border); padding-block: var(--space-4); }
.methodology-definitions dt { font-weight: 500; font-size: .875rem; }
.methodology-definitions dd { font-size: .875rem; color: var(--color-muted); }
.empty-state { padding: var(--space-16) var(--space-6); text-align: center; }
.empty-state h3 { font-family: var(--font-heading); font-size: 1.75rem; }
.empty-state p { max-width: 34rem; margin: var(--space-4) auto var(--space-6); color: var(--color-muted); font-size: .875rem; }
.empty-mark { display: block; margin-bottom: var(--space-3); font-size: 2.5rem; color: var(--color-accent); }
.error-page { display: flex; align-items: center; flex-direction: column; text-align: center; padding-block: var(--space-20); }
.error-code { color: var(--color-accent); font-family: var(--font-heading); font-size: clamp(5rem, 12vw, 9rem); line-height: 1.2; margin-top: var(--space-5); }
.error-page h1 { font-size: clamp(2.2rem, 4vw, 3.3rem); }
.error-page > p:not(.eyebrow) { max-width: 34rem; margin-top: var(--space-6); color: var(--color-muted); }
.error-page .button { margin-top: var(--space-8); }

@media (min-width: 1440px) {
    .hero { padding-block: 6.5rem; }
}

@media (max-width: 1100px) {
    .container { width: calc(100% - 4rem); }
    .main-nav { gap: var(--space-4); }
    .main-nav .nav-related { max-width: 135px; font-size: .6875rem; margin-left: 0; padding-left: var(--space-4); }
    .hero-grid { grid-template-columns: minmax(0, 1.5fr) minmax(275px, .9fr); gap: var(--space-10); }
    .hero h1 { font-size: clamp(2.7rem, 5.2vw, 4rem); }
    .archive-summary { padding: var(--space-6); }
    .summary-years { font-size: 2.25rem; }
    .archive-filters { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr); }
    .year-grid { grid-template-columns: repeat(8, minmax(0, 1fr)); }
    .source-callout { gap: var(--space-6); }
    .source-callout-number { flex-basis: 45px; font-size: 5rem; }
    .source-callout h2 { font-size: 1.8rem; }
    .program-detail-grid { grid-template-columns: minmax(0, 1fr) 260px; gap: var(--space-8); }
    .reader-layout { grid-template-columns: 200px minmax(0, 1fr); gap: var(--space-8); }
    .methodology-layout { grid-template-columns: 210px minmax(0, 1fr); gap: var(--space-10); }
    .footer-main { gap: var(--space-8); }
}

@media (max-width: 780px) {
    :root { --space-section: 3.5rem; }
    .container { width: calc(100% - 3rem); }
    .header-inner { padding-block: var(--space-4); flex-direction: column; align-items: start; gap: var(--space-3); }
    .brand { font-size: 1.25rem; }
    .brand-mark { width: 32px; height: 32px; flex-basis: 32px; }
    .main-nav { width: 100%; justify-content: space-between; gap: var(--space-3); font-size: .75rem; }
    .main-nav .nav-related { max-width: none; margin-left: auto; }
    .hero { padding-block: var(--space-12); }
    .hero-grid { grid-template-columns: 1fr; gap: var(--space-10); }
    .hero h1 { font-size: clamp(3rem, 8vw, 4.5rem); }
    .hero-copy > .eyebrow { margin-bottom: var(--space-6); }
    .hero-description { max-width: 38rem; }
    .hero-actions { margin-top: var(--space-6); }
    .archive-summary { padding: var(--space-6); display: grid; grid-template-columns: 1fr 1fr; column-gap: var(--space-8); }
    .summary-top { grid-column: 1; }
    .summary-top .eyebrow { max-width: none; }
    .summary-emblem { display: none; }
    .summary-years { grid-column: 1; grid-row: 2; font-size: 2rem; padding-block: var(--space-4); }
    .summary-stats { grid-column: 2; grid-row: 1 / span 3; }
    .summary-stats > div { padding-block: var(--space-3); gap: var(--space-4); }
    .summary-stats > div:first-child { border-top: 0; padding-top: 0; }
    .summary-stats dd { font-size: 1.6rem; min-width: 2rem; }
    .summary-stats dt { font-size: .6875rem; }
    .collection-status { grid-column: 1; margin-top: 0; align-self: end; }
    .section-heading { gap: var(--space-5); }
    .section-heading > p { max-width: 170px; font-size: .75rem; }
    .archive-filters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .archive-filters .field-search, .archive-filters .button { grid-column: 1 / -1; }
    .program-row { gap: var(--space-5); padding: var(--space-6) 0; }
    .row-open { font-size: 0; gap: 0; }
    .program-row h3 { font-size: 1.4rem; }
    .document-icon { width: 48px; height: 58px; flex-basis: 48px; }
    .document-icon svg { width: 22px; }
    .year-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
    .source-callout { flex-wrap: wrap; gap: var(--space-5); }
    .source-callout-number { display: none; }
    .source-callout > div { flex-basis: 100%; }
    .source-callout .button { margin-top: var(--space-2); }
    .footer-main { grid-template-columns: 1fr 1fr; gap: var(--space-6); }
    .footer-main nav { grid-column: 1 / -1; align-items: start; flex-direction: row; flex-wrap: wrap; gap: var(--space-6); }
    .document-header { padding-block: var(--space-10); }
    .document-header h1 { font-size: clamp(2.4rem, 6vw, 3.6rem); }
    .program-detail-grid { grid-template-columns: 1fr; }
    .context-panel { max-width: none; }
    .reader-layout { grid-template-columns: 1fr; gap: var(--space-8); }
    .reader-sidebar { position: static; max-height: none; }
    .reader-sidebar nav { padding: var(--space-5); border: 1px solid var(--color-border); }
    .chapter-toc { max-height: 250px; overflow-y: auto; padding: 5px; margin: var(--space-3) -5px -5px; }
    .reader-source-note { margin-top: var(--space-4); }
    .methodology-layout { grid-template-columns: 1fr; gap: var(--space-8); }
    .methodology-nav { position: static; gap: 0; border-bottom: 1px solid var(--color-border); padding-bottom: var(--space-6); }
    .methodology-content h2 { font-size: 1.8rem; }
}

@media (max-width: 480px) {
    .container { width: calc(100% - 2rem); }
    .header-inner { gap: var(--space-2); }
    .main-nav { flex-wrap: wrap; column-gap: var(--space-5); row-gap: 0; justify-content: start; }
    .main-nav .nav-related { border: 0; padding: 0; margin-left: 0; flex-basis: 100%; min-height: 32px; font-size: .6875rem; color: var(--color-muted); }
    .hero-copy > .eyebrow { font-size: .625rem; letter-spacing: .08em; gap: var(--space-2); }
    .eyebrow-line { width: 18px; flex-basis: 18px; }
    .hero h1 { font-size: clamp(2.6rem, 10.5vw, 3.3rem); }
    .hero-description { font-size: .875rem; }
    .hero-actions { gap: var(--space-5); }
    .button { gap: var(--space-4); padding-inline: var(--space-4); font-size: .75rem; }
    .hero-actions .text-link { font-size: .75rem; gap: var(--space-2); }
    .archive-summary { padding: var(--space-5); column-gap: var(--space-6); grid-template-columns: 1fr 1.1fr; }
    .summary-top .eyebrow { font-size: .5625rem; }
    .summary-years { font-size: 1.65rem; gap: var(--space-2); }
    .summary-years > span { font-size: 1rem; }
    .summary-stats > div { gap: var(--space-2); padding-block: .65rem; }
    .summary-stats dd { font-size: 1.4rem; min-width: 1.75rem; }
    .summary-stats dt { font-size: .625rem; }
    .collection-status { font-size: .5625rem; gap: .35rem; }
    .collection-status > span { width: 4px; height: 4px; flex-shrink: 0; }
    .section-heading { align-items: start; flex-direction: column; gap: var(--space-3); }
    .section-heading > p { max-width: none; }
    .section-heading > p br { display: none; }
    .section-heading h2 { font-size: 2rem; }
    .archive-filters { grid-template-columns: 1fr; padding: var(--space-4); gap: var(--space-4); }
    .archive-filters .field-search, .archive-filters .button { grid-column: 1; }
    .results-meta { font-size: .6875rem; align-items: baseline; }
    .results-meta > span { max-width: 120px; text-align: right; }
    .program-row { gap: var(--space-3); }
    .document-icon { display: none; }
    .program-row h3 { font-size: 1.35rem; }
    .program-author { font-size: .625rem; }
    .record-meta { font-size: .6875rem; gap: var(--space-2) var(--space-3); }
    .record-meta > span + span { padding-left: var(--space-3); }
    .row-open { padding-left: var(--space-1); }
    .pagination { font-size: .6875rem; gap: var(--space-2); }
    .pagination-direction { min-width: 85px; padding-inline: var(--space-2); gap: var(--space-2); }
    .coverage-legend { flex-wrap: wrap; gap: var(--space-2) var(--space-4); font-size: .625rem; }
    .year-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
    .year-cell { min-height: 76px; }
    .year-number { font-size: 1.2rem; }
    .source-callout h2 { font-size: 1.9rem; }
    .footer-main { grid-template-columns: 1fr; padding-bottom: var(--space-8); }
    .footer-main nav { flex-direction: column; gap: var(--space-1); }
    .footer-bottom { flex-direction: column; gap: var(--space-2); }
    .document-header h1 { font-size: 2.5rem; }
    .document-subtitle { font-size: 1rem; }
    .document-actions { gap: var(--space-3); }
    .document-actions .button { width: 100%; }
    .edition-card { padding: var(--space-5); }
    .edition-card h3 { font-size: 1.5rem; }
    .chapter > summary { padding: var(--space-5); gap: var(--space-3); }
    .chapter-title { font-size: 1.25rem; gap: var(--space-3); }
    .chapter-body { padding-inline: var(--space-5); }
    .original-text { font-size: 1.05rem; }
    .measure h3 { font-size: 1.3rem; }
    .document-page { padding: var(--space-5); }
    .methodology-definitions > div { grid-template-columns: 1fr; gap: var(--space-2); }
    .empty-state { padding: var(--space-10) var(--space-3); }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}

@media print {
    body { background: var(--white); color: var(--ink-900); }
    .container { width: 100%; }
    .site-header, .site-footer, .skip-link, .document-actions, .reader-sidebar, .back-to-archive, .pagination, .measure-permalink, .methodology-nav { display: none; }
    .reader-layout, .methodology-layout, .program-detail-grid { display: block; }
    .document-header { padding-block: var(--space-5); }
    h1 { font-size: 2.5rem; }
    .chapter { border: 0; }
    .chapter > summary { padding-inline: 0; }
    .chapter-body { padding-inline: 0; }
    .chapter-toggle { display: none; }
    .document-page { border: 0; padding: 0; }
    .original-text { font-size: 11pt; line-height: 1.6; }
    a { text-decoration: none; }
}