@font-face { font-family: 'Zilla Slab'; font-style: italic; font-weight: 300; font-display: swap; src: url("/assets/fonts/zilla-slab-latin-300-italic.woff2") format("woff2"); }
@font-face { font-family: 'Zilla Slab'; font-style: normal; font-weight: 300; font-display: swap; src: url("/assets/fonts/zilla-slab-latin-300-normal.woff2") format("woff2"); }
@font-face { font-family: 'Zilla Slab'; font-style: italic; font-weight: 400; font-display: swap; src: url("/assets/fonts/zilla-slab-latin-400-italic.woff2") format("woff2"); }
@font-face { font-family: 'Zilla Slab'; font-style: normal; font-weight: 400; font-display: swap; src: url("/assets/fonts/zilla-slab-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: 'Zilla Slab'; font-style: italic; font-weight: 500; font-display: swap; src: url("/assets/fonts/zilla-slab-latin-500-italic.woff2") format("woff2"); }
@font-face { font-family: 'Zilla Slab'; font-style: normal; font-weight: 500; font-display: swap; src: url("/assets/fonts/zilla-slab-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: 'Zilla Slab'; font-style: italic; font-weight: 600; font-display: swap; src: url("/assets/fonts/zilla-slab-latin-600-italic.woff2") format("woff2"); }
@font-face { font-family: 'Zilla Slab'; font-style: normal; font-weight: 600; font-display: swap; src: url("/assets/fonts/zilla-slab-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: 'Zilla Slab'; font-style: italic; font-weight: 700; font-display: swap; src: url("/assets/fonts/zilla-slab-latin-700-italic.woff2") format("woff2"); }
@font-face { font-family: 'Zilla Slab'; font-style: normal; font-weight: 700; font-display: swap; src: url("/assets/fonts/zilla-slab-latin-700-normal.woff2") format("woff2"); }
@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"); }
:root {
  --bg-light-base: #ebe5d8;
  --fg-light-base-body: #13213d;
  --fg-light-base-heading: #13213d;
  --fg-light-base-muted: #485168;
  --fg-light-base-link: #1b4b85;
  --fg-light-base-inverse: #13213d;
  --bg-light-card: #f7f3eb;
  --fg-light-card-body: #13213d;
  --fg-light-card-heading: #13213d;
  --fg-light-card-muted: #485168;
  --fg-light-card-link: #1b4b85;
  --fg-light-card-inverse: #13213d;
  --bg-light-elevated: #dfd7c6;
  --fg-light-elevated-body: #13213d;
  --fg-light-elevated-heading: #13213d;
  --fg-light-elevated-muted: #485168;
  --fg-light-elevated-link: #1b4b85;
  --fg-light-elevated-inverse: #13213d;
  --brand-light-accent: #1b4b85;
  --brand-light-accent-hover: #7a3c0c;
  --brand-light-on-accent: #f7f3eb;
  --focus-light-ring: #1b4b85;
  --border-light-default: #656d82;
  --border-light-subtle: #c9bfab;
}
.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); }
.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; }
:where(section[data-section][style]) { background-size: cover; background-position: center; padding: clamp(1.5rem, 4vw, 3rem); }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { position: static; padding: 0.25rem 0.5rem; outline: 2px solid var(--focus-light-ring); }

:root {
  --slab: 'Zilla Slab', Rockwell, Georgia, serif;
  --sans: 'IBM Plex Sans', 'Segoe UI', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;
  --navy: #14223d;
  --bone: var(--bg-light-base);
  --ink: #13213d;
  --ochre: #d39a4a;
  --tick: var(--border-light-default);
  --tick-soft: var(--border-light-subtle);
  --wrap: 74rem;
  --gutter: clamp(1rem, 4vw, 3rem);
  --measure: 40rem;
}

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

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

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
}

h1, h2, h3, h4 {
  font-family: var(--slab);
  font-weight: 700;
  line-height: 1.12;
  text-wrap: balance;
  margin: 0;
}

p { margin: 0 0 1rem; }

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

/* ---------- Ruler divider ---------- */

.ruler {
  height: 18px;
  background:
    repeating-linear-gradient(90deg, var(--tick) 0 1px, transparent 1px 10px) left bottom / 100% 6px no-repeat,
    repeating-linear-gradient(90deg, var(--tick) 0 1px, transparent 1px 50px) left bottom / 100% 12px no-repeat,
    repeating-linear-gradient(90deg, var(--tick) 0 2px, transparent 2px 100px) left bottom / 100% 18px no-repeat;
  border-bottom: 1px solid var(--tick);
}

.ruler-wide { max-width: var(--wrap); margin: 0 auto; }
.ruler-band { --tick: var(--navy); border-bottom: 3px solid var(--navy); }

/* ---------- Chrome ---------- */

.bp-bar { position: relative; z-index: 5; border-top: 6px solid var(--navy); }
.bp-bar > .ruler { --tick: var(--navy); }

.bp-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0.875rem var(--gutter);
}

.bp-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.875rem;
  text-decoration: none;
  min-width: 0;
}

.bp-brand .site-logo { width: 40px; height: auto; flex: none; }

.bp-brand-text { display: flex; flex-direction: column; min-width: 0; }

.bp-name {
  font-family: var(--slab);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.2;
}

.bp-strap {
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 1.4;
}

.bp-nav { flex: none; }

.site-menu { position: relative; }

.site-menu > summary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--navy);
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 0.875rem;
  white-space: nowrap;
}

.site-menu[open] > summary { background: var(--navy); color: var(--bg-light-card); }

.site-menu > ul {
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  min-width: 15rem;
  margin: 0;
  padding: 0.5rem 0;
  list-style: none;
  background: var(--bg-light-card);
  border: 1px solid var(--navy);
  border-top: 4px solid var(--navy);
  box-shadow: 0 10px 0 -4px var(--tick-soft);
}

.site-menu > ul a {
  display: block;
  padding: 0.625rem 1rem;
  min-height: 44px;
  font-family: var(--slab);
  font-weight: 600;
  font-size: 1.0625rem;
  text-decoration: none;
}

.site-menu > ul a:hover { text-decoration: underline; }

.bp-page { min-height: 50vh; }

.breadcrumbs {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0.875rem var(--gutter) 0;
  font-family: var(--mono);
  font-size: 0.8125rem;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.625rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li + li::before { content: "/"; margin-right: 0.625rem; color: var(--tick); }

.bp-foot { margin-top: 4rem; border-top: 6px solid var(--navy); }

.bp-foot-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 2rem var(--gutter) 2.5rem;
}

.bp-foot-name { font-family: var(--slab); font-weight: 700; font-size: 1.25rem; margin-bottom: 0.5rem; }
.bp-foot-line { max-width: 36rem; }
.bp-foot-note { font-family: var(--mono); font-size: 0.8125rem; max-width: 40rem; margin: 0; }

/* ---------- Shared labels ---------- */

.mono-kicker {
  font-family: var(--mono);
  font-size: 0.875rem;
  margin: 0 0 0.75rem;
}

/* ---------- Prose ---------- */

.prose { max-width: var(--measure); }
.prose h2 { font-size: clamp(1.5rem, 2.6vw, 1.875rem); margin: 2.5rem 0 0.875rem; }
.prose h3 { font-size: 1.25rem; font-weight: 600; margin: 1.75rem 0 0.5rem; }
.prose ul, .prose ol { padding-left: 1.25rem; margin: 0 0 1rem; }
.prose li { margin-bottom: 0.5rem; }
.prose li::marker { font-family: var(--mono); color: var(--tick); }
.prose blockquote {
  margin: 1.5rem 0;
  padding: 0.25rem 0 0.25rem 1.25rem;
  border-left: 3px solid var(--navy);
}
.prose .table-scroll { overflow-x: auto; margin: 0 0 1.25rem; }
.prose table { border-collapse: collapse; width: 100%; font-size: 0.9375rem; }
.prose th, .prose td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--tick-soft); }
.prose th { font-family: var(--mono); font-weight: 500; }

.photo-hero { margin: 0 0 2rem; }
.photo-hero img { display: block; width: 100%; height: auto; border: 1px solid var(--tick-soft); }

.photo-inline {
  counter-increment: fig;
  margin: 1.75rem 0;
  padding: 0.75rem;
  border: 1px solid var(--tick);
  background: var(--bone);
}
.photo-inline::before {
  content: "Fig. " counter(fig, decimal-leading-zero);
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
}
.photo-inline img { display: block; width: 100%; height: auto; }

section[data-section] {
  margin: 2rem 0;
  padding: clamp(1.5rem, 6vw, 4rem) clamp(1rem, 4vw, 3rem);
  background-size: cover;
  background-position: center;
}
section[data-section] > .bg-surface-card {
  max-width: 36rem;
  padding: 1.5rem 1.75rem;
  border-top: 3px solid var(--navy);
}
section[data-section] h2 { margin-top: 0; }

/* ---------- Spec rows: h2 label column beside the content ---------- */

.spec {
  counter-reset: sec fig;
  display: grid;
  grid-template-columns: minmax(0, 15rem) minmax(0, var(--measure));
  column-gap: clamp(1.5rem, 4vw, 3.5rem);
  max-width: none;
}
.spec > * { grid-column: 2; }
.spec > h2 {
  grid-column: 1;
  counter-increment: sec;
  margin: 0;
  padding: 1.75rem 0 1rem;
  border-top: 2px solid var(--navy);
  font-size: 1.375rem;
}
.spec > h2::before {
  content: counter(sec, decimal-leading-zero);
  display: block;
  margin-bottom: 0.375rem;
  font-family: var(--mono);
  font-size: 0.875rem;
  font-weight: 500;
}
.spec > h2 + * { padding-top: 1.75rem; border-top: 1px solid var(--tick-soft); }
.spec > h2 + h3 { margin-top: 0; }
.spec > figure.photo-hero,
.spec > section[data-section] { grid-column: 1 / -1; }
.spec > section[data-section] h2 { font-size: 1.5rem; }

.sheet {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 2.5rem var(--gutter) 0;
}

/* ---------- Home ---------- */

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: 2rem;
  align-items: center;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 5rem) var(--gutter) clamp(2rem, 5vw, 3.5rem);
}

.hero-title h1 {
  font-size: clamp(2.25rem, 5.6vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  max-width: 14ch;
}

.hero-headline {
  margin: 1.5rem 0 1.25rem;
  font-family: var(--slab);
  font-weight: 400;
  font-size: clamp(1.25rem, 2.3vw, 1.625rem);
  line-height: 1.3;
  max-width: 30ch;
}

.hero-line { max-width: 38rem; }
.hero-line + .hero-line { margin-top: -0.25rem; }

.hero-note {
  margin: 1.5rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px solid var(--tick);
  font-family: var(--mono);
  font-size: 0.8125rem;
  max-width: 34rem;
}

.hero-profile { width: 100%; max-width: 380px; height: auto; justify-self: end; }
.hp-panel { fill: var(--navy); }
.hp-grid { fill: none; stroke: #263a5f; stroke-width: 1; }
.hp-line { fill: none; stroke: #f1ebdf; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.hp-measure { fill: none; stroke: var(--ochre); stroke-width: 1.5; stroke-dasharray: 6 5; }
.hp-arc { fill: none; stroke: var(--ochre); stroke-width: 1.5; }
.hp-node { fill: var(--ochre); }

.modules {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 3rem var(--gutter) 0;
}

.modules-heading { font-size: 1.5rem; margin-bottom: 1.25rem; }

.module-grid {
  counter-reset: mod;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--tick);
  border: 1px solid var(--tick);
}

.module {
  counter-increment: mod;
  position: relative;
  padding: 1.5rem 1.5rem 1.75rem;
}

.module::before {
  content: "Module " counter(mod, decimal-leading-zero);
  display: block;
  margin-bottom: 1.5rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--fg-muted);
}

.module::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3.5rem;
  height: 3px;
  background: var(--navy);
}

.module-link {
  display: block;
  margin-bottom: 0.625rem;
  font-family: var(--slab);
  font-weight: 700;
  font-size: 1.375rem;
  line-height: 1.15;
  text-decoration: none;
}
.module-link:hover { text-decoration: underline; }
.module-link::after { content: ""; position: absolute; inset: 0; }
.module:focus-within { outline: 2px solid var(--brand-light-accent); outline-offset: -2px; }
.module-text { margin: 0; font-size: 0.9375rem; }

/* ---------- Topic hub ---------- */

.hub-band-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 2.5rem var(--gutter) 2rem;
}
.hub-band { margin-top: 0.875rem; }
.hub-band-inner .mono-kicker { margin-bottom: 0.5rem; }
.hub-title h1 { font-size: clamp(2rem, 4.8vw, 3.5rem); line-height: 1.05; max-width: 20ch; }

.hub-guides {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 2.5rem var(--gutter) 0;
}
.hub-guides-heading { font-size: 1.375rem; margin-bottom: 1rem; }

.spec-rows ul {
  counter-reset: guide;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--navy);
}
.spec-rows li {
  counter-increment: guide;
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  align-items: baseline;
  border-bottom: 1px solid var(--tick-soft);
}
.spec-rows li::before {
  content: counter(guide, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--fg-muted);
  padding: 1rem 0;
}
.spec-rows a {
  display: block;
  padding: 0.875rem 0;
  min-height: 44px;
  font-family: var(--slab);
  font-weight: 600;
  font-size: 1.25rem;
  text-decoration: none;
}
.spec-rows a:hover { text-decoration: underline; }

/* ---------- Article ---------- */

.explainer-head,
.method-head,
.request-head {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 2rem var(--gutter) 0;
}
.explainer-title h1,
.method-title h1,
.request-title h1 {
  font-size: clamp(2rem, 4.6vw, 3.25rem);
  line-height: 1.05;
  max-width: 22ch;
  margin-bottom: 1.25rem;
}

.explainer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 17rem;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
  max-width: var(--wrap);
  margin: 2rem auto 0;
  padding: 0 var(--gutter);
}

.reading {
  counter-reset: fig;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--tick-soft);
}
.reading-body > :first-child { margin-top: 0; }
.reading-body h2 { padding-top: 1rem; border-top: 2px solid var(--navy); }

.steps {
  position: sticky;
  top: 1.5rem;
  padding: 1.5rem;
  border: 1px solid var(--navy);
  border-top: 10px solid var(--navy);
}
.steps-heading { font-size: 1.1875rem; margin-bottom: 1rem; }
.steps-list {
  counter-reset: step;
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
}
.steps-list li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--tick-soft);
  font-family: var(--slab);
  font-weight: 600;
}
.steps-list li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-weight: 400;
  font-size: 0.8125rem;
  width: 2rem;
  line-height: 2rem;
  text-align: center;
  color: #f7f3eb;
  background: var(--navy);
}
.steps-note { margin: 0; font-family: var(--mono); font-size: 0.8125rem; line-height: 1.55; }

/* ---------- About ---------- */

.method-sheet {
  max-width: var(--wrap);
  margin: 2rem auto 0;
  padding: clamp(1rem, 3vw, 2.5rem) clamp(1rem, 4vw, 3rem) 1.5rem;
  border: 1px solid var(--tick-soft);
}
@media (min-width: 76rem) {
  .method-sheet { margin-left: auto; margin-right: auto; }
}
.spec-method > h2 {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.4;
}

/* ---------- Contact ---------- */

.request-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 26rem);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
  max-width: var(--wrap);
  margin: 2rem auto 0;
  padding: 0 var(--gutter);
}
.request-body > :first-child { margin-top: 0; }

.request-panel {
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 8px solid var(--navy);
  outline: 1px solid var(--navy);
  outline-offset: 4px;
}
.request-heading { font-size: 1.375rem; margin-bottom: 0.5rem; }
.request-note { font-size: 0.9375rem; }

.request-form { display: grid; gap: 1rem; margin-top: 1.25rem; }
.field { display: grid; gap: 0.375rem; }
.field-label { font-family: var(--mono); font-size: 0.875rem; }
.field input,
.field textarea {
  width: 100%;
  min-height: 44px;
  padding: 0.625rem 0.75rem;
  font: inherit;
  color: var(--ink);
  background: var(--bone);
  border: 1px solid var(--tick);
  border-radius: 2px;
}
.field textarea { resize: vertical; }
.field input:focus-visible,
.field textarea:focus-visible { outline: 2px solid var(--brand-light-accent); outline-offset: 2px; border-color: var(--navy); }

.request-clear {
  justify-self: start;
  min-height: 44px;
  padding: 0.5rem 1.125rem;
  font-family: var(--mono);
  font-size: 0.875rem;
  color: inherit;
  background: transparent;
  border: 1px solid var(--navy);
  border-radius: 2px;
  cursor: pointer;
}
.request-clear:hover { background: var(--navy); color: #f7f3eb; }
.request-clear:focus-visible { outline: 2px solid var(--brand-light-accent); outline-offset: 2px; }

/* ---------- Thank you and not found ---------- */

.slip-page {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 3rem var(--gutter) 0;
}
.slip {
  max-width: 44rem;
  margin: 0 auto;
  padding: 2rem clamp(1.25rem, 4vw, 2.75rem) 2.25rem;
  border: 1px solid var(--tick);
  background-image:
    repeating-linear-gradient(90deg, var(--tick) 0 1px, transparent 1px 12px),
    repeating-linear-gradient(90deg, var(--tick) 0 1px, transparent 1px 12px);
  background-size: 100% 8px, 100% 8px;
  background-position: left top, left bottom;
  background-repeat: no-repeat;
}
.slip-ref {
  margin: 0.75rem 0 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px dashed var(--tick);
  font-family: var(--mono);
  font-size: 0.8125rem;
}
.slip-title h1 { font-size: clamp(1.875rem, 4vw, 2.75rem); margin: 1rem 0 1.25rem; }
.slip-ref + .slip-title h1 { margin-top: 0; }
.slip-body > :first-child { margin-top: 0; }

/* ---------- Narrow screens ---------- */

@media (max-width: 60rem) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-profile { max-width: 220px; justify-self: start; order: -1; }
  .module-grid { grid-template-columns: 1fr; }
  .explainer-layout,
  .request-layout { grid-template-columns: 1fr; }
  .steps { position: static; }
}

@media (max-width: 44rem) {
  .spec { grid-template-columns: 1fr; }
  .spec > *,
  .spec > h2 { grid-column: 1; }
  .spec > h2 + * { padding-top: 0; border-top: 0; }
  .spec > h2 { padding-bottom: 0.75rem; }
  .bp-strap { display: none; }
  .spec-rows li { grid-template-columns: 3rem minmax(0, 1fr); }
}

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

/* Pinned header */
:root { --pin-h: 6rem; }
@media (max-width: 24rem) { :root { --pin-h: 8.75rem; } }
html { scroll-padding-top: calc(var(--pin-h) + 1rem); }
.bp-bar { position: sticky; top: 0; z-index: 20; background-color: inherit; }
.steps { top: calc(var(--pin-h) + 1.5rem); }

/* Desktop menu */
@media (min-width: 72rem) {
  .site-menu > summary { display: none; }
  .site-menu::details-content { content-visibility: visible; }
  .site-menu > ul {
    position: static;
    display: flex;
    min-width: 0;
    padding: 0;
    background: none;
    border: 1px solid var(--navy);
    box-shadow: none;
    counter-reset: sheet;
  }
  .site-menu > ul li { counter-increment: sheet; }
  .site-menu > ul li + li { border-left: 1px solid var(--navy); }
  .site-menu > ul a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.875rem;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 0.8125rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
    color: var(--ink);
  }
  .site-menu > ul a::before {
    content: counter(sheet, decimal-leading-zero);
    color: var(--brand-light-accent);
  }
  .site-menu > ul a:hover { background: var(--navy); color: var(--bg-light-card); text-decoration: none; }
  .site-menu > ul a:hover::before { color: var(--ochre); }
  .site-menu > ul a:focus-visible { outline-offset: -4px; }
  :root { --pin-h: 6.5rem; }
}