/* package fonts (woff2, copied into dist/assets/fonts) */
@font-face { font-family: 'IBM Plex Sans'; font-style: italic; font-weight: 100; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-100-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 100; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-100-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: italic; font-weight: 200; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-200-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 200; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-200-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: italic; font-weight: 300; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-300-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 300; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-300-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: italic; font-weight: 400; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-400-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 400; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: italic; font-weight: 500; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-500-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 500; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: italic; font-weight: 600; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-600-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 600; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: italic; font-weight: 700; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-700-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 700; font-display: swap; src: url("/assets/fonts/ibm-plex-sans-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: italic; font-weight: 100; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-100-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 100; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-100-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: italic; font-weight: 200; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-200-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 200; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-200-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: italic; font-weight: 300; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-300-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 300; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-300-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: italic; font-weight: 400; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-400-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: italic; font-weight: 500; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-500-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 500; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: italic; font-weight: 600; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-600-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 600; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: italic; font-weight: 700; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-700-italic.woff2") format("woff2"); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 700; font-display: swap; src: url("/assets/fonts/ibm-plex-mono-latin-700-normal.woff2") format("woff2"); }
/* generated block: satellite design tokens (light) */
:root {
  --bg-light-base: #ffffff;
  --fg-light-base-body: #4a4f57;
  --fg-light-base-heading: #23262b;
  --fg-light-base-muted: #5d636c;
  --fg-light-base-link: #1a56b8;
  --fg-light-base-inverse: #23262b;
  --bg-light-card: #f6f7f8;
  --fg-light-card-body: #4a4f57;
  --fg-light-card-heading: #23262b;
  --fg-light-card-muted: #5d636c;
  --fg-light-card-link: #1a56b8;
  --fg-light-card-inverse: #23262b;
  --bg-light-elevated: #eef0f2;
  --fg-light-elevated-body: #4a4f57;
  --fg-light-elevated-heading: #23262b;
  --fg-light-elevated-muted: #5d636c;
  --fg-light-elevated-link: #1a56b8;
  --fg-light-elevated-inverse: #23262b;
  --brand-light-accent: #1a56b8;
  --brand-light-accent-hover: #123f8a;
  --brand-light-on-accent: #ffffff;
  --focus-light-ring: #1a56b8;
  --border-light-default: #80858d;
  --border-light-subtle: #d7dade;
}
.bg-surface-base { background: var(--bg-light-base); --fg-body: var(--fg-light-base-body); --fg-heading: var(--fg-light-base-heading); --fg-muted: var(--fg-light-base-muted); --fg-link: var(--fg-light-base-link); --fg-inverse: var(--fg-light-base-inverse); }
.bg-surface-card { background: var(--bg-light-card); --fg-body: var(--fg-light-card-body); --fg-heading: var(--fg-light-card-heading); --fg-muted: var(--fg-light-card-muted); --fg-link: var(--fg-light-card-link); --fg-inverse: var(--fg-light-card-inverse); }
.bg-surface-elevated { background: var(--bg-light-elevated); --fg-body: var(--fg-light-elevated-body); --fg-heading: var(--fg-light-elevated-heading); --fg-muted: var(--fg-light-elevated-muted); --fg-link: var(--fg-light-elevated-link); --fg-inverse: var(--fg-light-elevated-inverse); }
/* component rules: semantic carriers and renderer-owned behaviours */
.text-role-body { color: var(--fg-body); overflow-wrap: anywhere; }
.text-role-heading { color: var(--fg-heading); overflow-wrap: anywhere; }
.text-role-muted { color: var(--fg-muted); }
.text-role-link { color: var(--fg-link); }
.text-role-inverse { color: var(--fg-inverse); }
.text-role-link { text-decoration: underline; }
.text-role-link:hover { color: var(--brand-light-accent-hover); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--focus-light-ring); outline-offset: 2px; }
img { max-width: 100%; height: auto; }
.site-logo { max-width: 100%; height: auto; }
.site-menu > summary { list-style: none; cursor: pointer; }
.site-menu > summary::-webkit-details-marker { display: none; }
.site-menu > summary .menu-icon { display: inline-block; width: 1.25rem; text-align: center; }
.site-menu > summary .menu-icon::before { content: "\2630"; }
.site-menu[open] > summary .menu-icon::before { content: "\00D7"; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { position: static; padding: 0.25rem 0.5rem; outline: 2px solid var(--focus-light-ring); }

/* package stylesheet (verbatim; model-owned rules win by source order) */
/* Westchester Glow Guide: Swiss clinical chart.
   Graphite bar, white sheet, twelve-column grid, signal orange for marks,
   active states and focus, blue for links. */

:root {
  --graphite: #23262b;
  --signal: #e2531b;
  --on-signal: #000000;
  --hairline: #d7dade;
  --white: #ffffff;
  --sans: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'IBM Plex Mono', Menlo, Consolas, monospace;
  --gutter: 1.5rem;
  --shell: 75rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
}

h1, h2, h3 {
  font-family: var(--sans);
  font-weight: 600;
  color: var(--fg-heading);
  margin: 0;
}

h1 {
  font-size: clamp(2.25rem, 1.4rem + 3.6vw, 4.25rem);
  line-height: 1.04;
  letter-spacing: -0.025em;
  max-width: 16ch;
}

h2 { font-size: 1.5rem; line-height: 1.2; letter-spacing: -0.01em; }
h3 { font-size: 1.125rem; line-height: 1.3; }

p { margin: 0 0 1rem; }

a.text-role-link { text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a.text-role-link:hover { text-decoration-thickness: 2px; }

a:focus-visible, button:focus-visible, summary:focus-visible,
input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link:focus { font-family: var(--mono); }

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 48rem) {
  .shell { padding: 0 2rem; }
}

/* ---------- Header bar ---------- */

.site-header {
  background: var(--graphite);
  color: var(--white);
  position: relative;
  z-index: 10;
}

.header-bar {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand { display: inline-flex; align-items: center; flex: none; color: var(--white); }
.brand .site-logo { height: 40px; width: auto; max-width: min(300px, 62vw); display: block; }

.site-menu { position: static; flex-shrink: 0; }

.site-menu > summary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  min-width: 44px;
  padding: 0 0.875rem;
  background: var(--signal);
  color: var(--on-signal);
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: nav;
}

.site-menu li { counter-increment: nav; }

.site-menu a.text-role-link {
  color: var(--white);
  text-decoration: none;
  font-family: var(--sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  white-space: nowrap;
  padding: 0.875rem 0;
  border-bottom: 2px solid transparent;
}

.site-menu a.text-role-link::before {
  content: counter(nav, decimal-leading-zero);
  font-family: var(--mono);
  font-weight: 400;
  margin-right: 0.625rem;
  color: var(--hairline);
}

.site-menu a.text-role-link:hover,
.site-menu a.text-role-link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--signal);
}

@media (max-width: 71.99rem) {
  .site-menu[open] > ul {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--graphite);
    padding: 0.5rem 1rem 1rem;
    border-top: 1px solid #3a3e45;
  }
  .site-menu[open] li + li { border-top: 1px solid #3a3e45; }
}

@media (min-width: 72rem) {
  .site-menu > summary { display: none; }
  .site-menu::details-content { content-visibility: visible; }
  .site-menu:not([open]) > ul,
  .site-menu > ul { display: flex; gap: 1.25rem; }
  .brand .site-logo { max-width: 260px; }
  .site-menu a.text-role-link { padding: 1.25rem 0 1.125rem; }
}

/* ---------- Page frame and breadcrumbs ---------- */

.page-frame { padding-top: 1.5rem; padding-bottom: 4rem; }

.breadcrumbs {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 0.625rem;
  margin-bottom: 2rem;
}

.breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
}

.breadcrumbs li + li::before { content: "/"; margin-right: 0.5rem; color: var(--fg-muted); }
.breadcrumbs a.text-role-link { text-decoration: none; }
.breadcrumbs a.text-role-link:hover { text-decoration: underline; }

/* ---------- Grid ---------- */

.grid12 {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  column-gap: var(--gutter);
}

@media (min-width: 60rem) {
  .grid12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
}

/* ---------- Figures: square crop, mono figure label ---------- */

main { counter-reset: fig; }

figure.photo-hero, figure.photo-inline {
  margin: 0 0 1.5rem;
  counter-increment: fig;
}

figure.photo-hero img, figure.photo-inline img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

figure.photo-hero::after, figure.photo-inline::after {
  content: "Fig. " counter(fig);
  display: block;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: 0.5rem 0 0;
  border-top: 2px solid var(--signal);
  margin-top: 0.5rem;
  color: var(--fg-muted);
}

figure.photo-inline { max-width: 26rem; }

/* ---------- Body content ---------- */

.prose, .note-body, .spec-body, .home-body { max-width: 100%; }

.prose p, .note-body p { max-width: 68ch; }

.prose h2, .note-body h2 { margin: 2.5rem 0 1rem; }
.prose h3, .note-body h3 { margin: 1.75rem 0 0.5rem; }

.prose ul, .prose ol, .note-body ul, .note-body ol, .spec-body ul {
  padding-left: 1.25rem;
  margin: 0 0 1.25rem;
  max-width: 68ch;
}

li { margin-bottom: 0.375rem; }
li::marker { color: var(--signal); }

strong { font-weight: 600; color: var(--fg-heading); }

blockquote.accent-block {
  margin: 1.5rem 0;
  padding: 0.25rem 0 0.25rem 1.25rem;
  border-left: 3px solid var(--signal);
}

.table-scroll { overflow-x: auto; margin: 1.5rem 0; }
.table-scroll table { border-collapse: collapse; width: 100%; font-size: 0.9375rem; }
.table-scroll th, .table-scroll td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--hairline); vertical-align: top; }
.table-scroll th { font-family: var(--mono); font-weight: 400; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.04em; border-bottom: 2px solid var(--graphite); }

section[data-section] {
  grid-column: 1 / -1;
  background-size: cover;
  background-position: center;
  padding: 2rem 1rem;
  margin: 2rem 0;
}

section[data-section] > .bg-surface-card {
  max-width: 44rem;
  padding: 1.5rem 1.5rem 0.75rem;
  border-top: 3px solid var(--signal);
}

section[data-section] > .bg-surface-card > h2:first-child { margin-top: 0; }

@media (min-width: 48rem) {
  section[data-section] { padding: 4rem 2rem; }
  section[data-section] > .bg-surface-card { padding: 2rem 2rem 1rem; }
}

/* ---------- Home: chart sheet ---------- */

.home { position: relative; isolation: isolate; row-gap: 0; }
.home-body { display: contents; }
.home > *, .home-body > * { grid-column: 1 / -1; }

.home-title { padding-top: 0.5rem; }
.home-title h1 { max-width: 14ch; font-size: clamp(2.5rem, 1.4rem + 4.6vw, 5rem); }

.home-lede {
  font-size: 1.25rem;
  line-height: 1.45;
  max-width: 34ch;
  margin: 1.5rem 0;
}

.home-body > figure.photo-hero { margin-top: 1rem; }

.home-body > h2 {
  margin-top: 3.5rem;
  padding-top: 0.75rem;
  border-top: 2px solid var(--graphite);
}

.home-body > p { max-width: 68ch; }

.home-body > ul {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--hairline);
  counter-reset: matrix;
}

.home-body > ul > li {
  counter-increment: matrix;
  margin: 0;
  padding: 1.25rem 0 1.5rem;
  border-bottom: 1px solid var(--hairline);
}

.home-body > ul > li::before {
  content: counter(matrix, decimal-leading-zero);
  display: block;
  font-family: var(--mono);
  font-size: 3rem;
  line-height: 1;
  color: var(--signal);
  margin-bottom: 1rem;
}

.home-body > ul > li strong { display: block; font-size: 1.125rem; margin-bottom: 0.25rem; }

.fact-band {
  border-top: 3px solid var(--signal);
  border-bottom: 3px solid var(--signal);
  margin: 3.5rem 0 1rem;
  padding: 1.5rem 0;
}

.fact-list { margin: 0; display: grid; gap: 1.5rem; }
.fact { display: grid; gap: 0.375rem; align-content: start; }
.fact-label { font-family: var(--mono); font-size: 0.8125rem; letter-spacing: 0.04em; }
.fact-text { margin: 0; color: var(--fg-heading); font-size: 1.0625rem; line-height: 1.5; }

@media (min-width: 48rem) {
  .home-body > ul { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .home-body > ul > li { padding: 1.25rem 1.5rem 1.5rem; border-bottom: 0; }
  .home-body > ul > li + li { border-left: 1px solid var(--hairline); }
  .home-body > ul > li:first-child { padding-left: 0; }
  .home-body > ul { border-bottom: 1px solid var(--hairline); }
  .fact-list { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gutter); }
}

@media (min-width: 60rem) {
  .home::before {
    content: "";
    grid-column: 1 / -1;
    grid-row: 1 / 4;
    z-index: -1;
    margin: -1.5rem 0 0;
    border-right: 1px solid var(--hairline);
    background-image: linear-gradient(to right, var(--hairline) 1px, transparent 1px);
    background-size: calc((100% + var(--gutter)) / 12) 100%;
    pointer-events: none;
  }
  .home-title { grid-column: 1 / 9; grid-row: 1; }
  .home-lede { grid-column: 1 / 7; grid-row: 2; }
  .home-body > p:first-of-type { grid-column: 1 / 8; grid-row: 3; padding-bottom: 2rem; }
  .home-body > figure.photo-hero { grid-column: 9 / 13; grid-row: 1 / 4; margin: 0.5rem 0 2rem; align-self: start; }
  .home-body > h2 { grid-column: 1 / 5; }
  .home-body > h2 + p { grid-column: 5 / 13; margin-top: 3.5rem; padding-top: 0.75rem; border-top: 2px solid var(--graphite); }
  .home-body > h2 ~ p { grid-column: 5 / 13; }
  .home-body > ul { grid-column: 1 / -1; }
  .home-body > ul ~ * { order: 2; }
  .fact-band { order: 1; }
}

/* ---------- Topic hub: index table ---------- */

.hub-title { padding-bottom: 1.5rem; border-bottom: 2px solid var(--graphite); margin-bottom: 2rem; }

.hub-split { display: grid; grid-template-columns: minmax(0, 1fr); gap: 2.5rem; }

.hub-index-heading {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  padding-bottom: 0.625rem;
  border-bottom: 2px solid var(--graphite);
}

.hub-table ul { list-style: none; margin: 0; padding: 0; counter-reset: row; }

.hub-table li {
  counter-increment: row;
  margin: 0;
  display: grid;
  grid-template-columns: 2.75rem minmax(0, 1fr);
  border-bottom: 1px solid var(--hairline);
  padding: 0.875rem 0;
}

.hub-table li::before {
  content: counter(row, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--fg-muted);
  padding-top: 0.125rem;
}

.hub-table li::marker { content: none; }
.hub-table a.text-role-link { font-weight: 600; line-height: 1.35; }

.hub-intro > p:first-of-type { font-size: 1.1875rem; line-height: 1.5; color: var(--fg-heading); }
.hub-intro > figure.photo-hero { max-width: 26rem; }

@media (min-width: 60rem) {
  .hub-split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--gutter) calc(var(--gutter) * 2); }
  .hub-index { position: sticky; top: 1.5rem; align-self: start; }
}

/* ---------- Article: technical note ---------- */

.note-title { padding-bottom: 1rem; border-bottom: 2px solid var(--graphite); margin-bottom: 2rem; }
.note-title h1 { font-size: clamp(2rem, 1.3rem + 2.8vw, 3.5rem); max-width: 22ch; }

.note-body { display: contents; counter-reset: sec; }
.note-grid { counter-reset: sec; }
.note-body > * { grid-column: 1 / -1; }

.note-body > p:first-of-type { font-size: 1.1875rem; line-height: 1.5; color: var(--fg-heading); }

.note-grid h2 { counter-increment: sec; }
.note-grid h2::before {
  content: counter(sec) ".0";
  display: block;
  font-family: var(--mono);
  font-weight: 400;
  color: var(--signal);
  margin-bottom: 0.25rem;
}

.note-body > h2 { padding-top: 0.75rem; border-top: 1px solid var(--hairline); }

@media (min-width: 60rem) {
  .note-body > * { grid-column: 1 / 9; }
  .note-body > figure.photo-hero {
    grid-column: 9 / 13;
    grid-row: 1 / span 4;
    position: sticky;
    top: 1.5rem;
    align-self: start;
  }
  .note-body > section[data-section] { grid-column: 1 / 9; }
}

/* ---------- About: specification sheet ---------- */

.spec-sheet { row-gap: 0; }
.spec-body { display: contents; }
.spec-sheet > *, .spec-body > * { grid-column: 1 / -1; }

.spec-title { padding-bottom: 1.5rem; }

.spec-body > h2 {
  font-size: 1.125rem;
  line-height: 1.35;
  padding: 1rem 0 0.5rem;
  border-top: 1px solid var(--hairline);
}

.spec-body > p { max-width: 68ch; }
.spec-body > h2:first-of-type { border-top: 2px solid var(--graphite); }

@media (min-width: 60rem) {
  .spec-title { grid-column: 1 / 9; grid-row: 1; align-self: end; }
  .spec-body > figure.photo-hero { grid-column: 9 / 13; grid-row: 1; margin-bottom: 2.5rem; }
  .spec-body > h2 { grid-column: 1 / 5; padding-right: 1.5rem; }
  .spec-body > h2 + p { grid-column: 5 / 13; border-top: 1px solid var(--hairline); padding-top: 1rem; }
  .spec-body > h2:first-of-type + p { border-top: 2px solid var(--graphite); }
  .spec-body > p { grid-column: 5 / 13; }
}

/* ---------- Contact: two-column grid form ---------- */

.contact-title { padding-bottom: 1rem; border-bottom: 2px solid var(--graphite); margin-bottom: 2rem; }

.contact-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0 var(--gutter);
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--hairline);
}

.field { display: grid; gap: 0.375rem; margin-bottom: 1.25rem; }

.field-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.field-input {
  font: inherit;
  width: 100%;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-light-default);
  border-radius: 0;
  background: var(--white);
}

.field-area { resize: vertical; min-height: 10rem; }

.submit {
  font-family: var(--mono);
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  min-height: 48px;
  padding: 0 1.5rem;
  border: 0;
  border-radius: 0;
  background: var(--signal);
  color: var(--on-signal);
  cursor: pointer;
  justify-self: end;
}

.submit:hover { background: #c94511; }

.form-col { display: grid; align-content: start; }

@media (min-width: 48rem) {
  .contact-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- Thank you and 404: receipt card ---------- */

.receipt-page { padding: 1rem 0 2rem; }

.receipt {
  max-width: 40rem;
  border: 1px solid var(--graphite);
  padding: 1.5rem;
}

.receipt-label {
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 0.625rem;
  border-bottom: 3px solid var(--signal);
  margin-bottom: 1.25rem;
}

.receipt-title h1 { font-size: clamp(1.75rem, 1.3rem + 2vw, 2.5rem); }

.receipt-body h2 { font-size: 1.125rem; }

.receipt-next-heading {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  margin-top: 2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--hairline);
}

.receipt-next { list-style: none; margin: 0; padding: 0; counter-reset: next; }
.receipt-next li { counter-increment: next; margin: 0; padding: 0.75rem 0; border-bottom: 1px solid var(--hairline); }
.receipt-next li::before { content: counter(next, decimal-leading-zero); font-family: var(--mono); color: var(--fg-muted); margin-right: 1rem; }

@media (min-width: 48rem) {
  .receipt { padding: 2rem 2.5rem; }
}

/* ---------- Footer ---------- */

.site-footer { border-top: 2px solid var(--graphite); }

.footer-grid {
  display: grid;
  gap: 0.5rem;
  padding-top: 1.5rem;
  padding-bottom: 2rem;
  font-size: 0.9375rem;
}

.footer-name { font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; margin: 0; }
.footer-line { margin: 0; max-width: 60ch; }
.footer-client { margin: 0; font-family: var(--mono); font-size: 0.8125rem; }

@media (min-width: 48rem) {
  .footer-grid { grid-template-columns: minmax(0, 3fr) minmax(0, 6fr) minmax(0, 3fr); align-items: start; gap: var(--gutter); }
  .footer-client { justify-self: end; }
}

/* ---------- Motion: hover and focus only ---------- */

.site-menu a.text-role-link, .submit, a.text-role-link {
  transition: color 120ms linear, border-color 120ms linear, background-color 120ms linear, text-decoration-thickness 120ms linear;
}

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

/* Phone menu toggle: glyph only; the word stays for screen readers. */
.site-menu > summary .menu-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.site-menu > summary .menu-icon::before { content: "\2261"; font-size: 1.6rem; line-height: 1; }
.site-menu[open] > summary .menu-icon::before { content: "\2212"; }