/* Birchfield Solutions: the engineering field guide. No external assets or fonts. */
:root {
  --paper: #f3f5f2;
  --white: #ffffff;
  --ink: #172b27;
  --muted: #52635c;
  --blue: #143fcd;
  --blue-deep: #1032a4;
  --lime: #d7ed9a;
  --blue-text: #e2e9ff;
  --border: #cdd6ce;
  --max-width: 78rem;
  --radius: 0.25rem;
  --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 7rem; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--blue); text-underline-offset: 0.22em; }
a:hover { text-decoration-thickness: 2px; }
h1, h2, h3 { line-height: 1.12; text-wrap: balance; }
h1, h2 { letter-spacing: -0.04em; }
p { margin-top: 0; }
summary { cursor: pointer; }
::selection { background: var(--lime); color: var(--ink); }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
.wrap { width: 100%; max-width: var(--max-width); margin-inline: auto; padding-inline: 2rem; }
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 1rem;
  transform: translateY(-180%);
  background: var(--lime);
  color: var(--ink);
  padding: 0.75rem 1.25rem;
  z-index: 100;
  font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }

/* Shared navigation */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--paper); border-bottom: 1px solid var(--border); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; min-height: 5.5rem; }
.brand { display: inline-flex; align-items: center; gap: 0.75rem; color: var(--ink); text-decoration: none; flex-shrink: 0; }
.brand__mark { width: 40px; height: 40px; }
.brand__text { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.035em; }
.site-nav > ul { display: flex; align-items: center; gap: 1.8rem; list-style: none; margin: 0; padding: 0; }
.site-nav a, .service-menu > summary { color: var(--ink); text-decoration: none; font-size: 0.9rem; font-weight: 600; }
.site-nav > ul > li > a:not(.nav-contact) { display: inline-block; padding-block: 0.75rem; }
.site-nav a:hover, .site-nav a[aria-current="page"], .service-menu > .is-current { color: var(--blue); }
.site-nav a[aria-current="page"] { text-decoration: underline; }
.service-menu { position: relative; }
.service-menu > summary { list-style: none; padding-block: 0.75rem; }
.service-menu > summary::-webkit-details-marker, .mobile-menu > summary::-webkit-details-marker { display: none; }
.service-menu > summary::after { content: "+"; margin-left: 0.4rem; color: var(--blue); }
.service-menu[open] > summary::after { content: "\2212"; }
.service-menu__panel {
  position: absolute;
  top: calc(100% + 1.25rem);
  left: -1.25rem;
  width: 22rem;
  padding: 0.5rem 1.25rem;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: 0 14px 28px rgb(23 43 39 / 12%);
}
.service-menu__panel a { display: block; padding-block: 1rem; border-bottom: 1px solid var(--border); }
.service-menu__panel a:last-child { border-bottom: 0; }
.service-menu__panel strong, .service-menu__panel span { display: block; }
.service-menu__panel span { color: var(--muted); font-size: 0.85rem; font-weight: 400; margin-top: 0.2rem; }
.site-nav .nav-contact { display: inline-flex; align-items: center; gap: 1.25rem; background: var(--blue); color: var(--white); padding: 0.7rem 1rem; border: 1px solid var(--blue); border-radius: var(--radius); }
.site-nav .nav-contact:hover, .site-nav .nav-contact[aria-current="page"] { background: var(--blue-deep); color: var(--white); }
.mobile-menu { display: none; }

/* First viewport */
.hero { padding-block: 5rem 4rem; }
.hero__inner { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); align-items: center; gap: 4rem; }
.hero h1 { font-size: clamp(3.5rem, 5.7vw, 5.25rem); margin: 0 0 1.75rem; line-height: 1.04; }
.hero h1 span { color: var(--blue); }
.lede { font-size: 1.2rem; line-height: 1.65; max-width: 54ch; color: var(--muted); margin: 0 0 2rem; }
.hero .lede { max-width: 42ch; }
.cta-row { display: flex; align-items: center; flex-wrap: wrap; gap: 1.5rem; }
.btn { display: inline-flex; align-items: center; justify-content: space-between; gap: 1.5rem; max-width: 100%; padding: 1rem 1.25rem; border: 1px solid transparent; border-radius: var(--radius); font-weight: 600; line-height: 1.5; text-decoration: none; transition: background 160ms ease-out, color 160ms ease-out; overflow-wrap: anywhere; }
.btn--primary { background: var(--blue); color: var(--white); }
.btn--primary:hover { background: var(--blue-deep); }
.btn--dark { background: var(--ink); color: var(--white); }
.btn--dark:hover { background: #29463e; }
.btn--ghost { color: var(--blue); border-color: var(--blue); }
.btn--ghost:hover { background: var(--blue); color: var(--white); }
.btn span[aria-hidden] { flex-shrink: 0; }
.link-arrow { display: inline-block; font-weight: 600; text-decoration: none; line-height: 1.6; }
.link-arrow:hover { text-decoration: underline; }
.link-arrow span { display: inline-block; margin-left: 0.4rem; }
.hero__note { font-size: 0.85rem; margin: 1.25rem 0 0; color: var(--muted); }
.service-index { background: var(--blue); color: var(--white); padding: 2rem; border-radius: var(--radius); }
.service-index__heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; padding-bottom: 1.5rem; }
.service-index h2 { font-size: 1.6rem; margin: 0; letter-spacing: -0.025em; }
.field-mark { width: 4rem; flex-shrink: 0; color: var(--lime); fill: currentColor; }
.service-index__link { display: flex; align-items: center; justify-content: space-between; gap: 1rem; color: var(--white); padding-block: 1.15rem; border-top: 1px solid #647fe0; text-decoration: none; }
.service-index__link strong, .service-index__link span > span { display: block; }
.service-index__link strong { font-size: 1.2rem; font-weight: 500; }
.service-index__link span > span { color: var(--blue-text); font-size: 0.9rem; margin-top: 0.15rem; }
.service-index__link > span:last-child { color: var(--lime); font-size: 1.5rem; }
.service-index__link:hover strong { text-decoration: underline; text-underline-offset: 0.2em; }
.service-index__foot { font-size: 0.8rem; color: var(--blue-text); margin: 0.75rem 0 0; }
.service-index__foot a { color: var(--white); display: inline-block; padding-block: 0.35rem; }
.service-index :focus-visible, .section--blue :focus-visible, .cta-band :focus-visible, .site-footer :focus-visible { outline-color: var(--lime); }

/* Experience is attributed to Adam, not presented as company endorsements. */
.experience { border-block: 1px solid var(--border); }
.experience__inner { display: flex; align-items: center; gap: 2.5rem; padding-block: 1.75rem; }
.experience p { color: var(--muted); font-size: 0.8rem; line-height: 1.5; margin: 0; flex-shrink: 0; }
.experience ul { display: flex; align-items: center; justify-content: space-between; flex: 1; gap: 2rem; list-style: none; padding: 0; margin: 0; }
.experience li { font-size: 1rem; font-weight: 700; line-height: 1.25; letter-spacing: -0.025em; }
.experience a { font-size: 0.85rem; font-weight: 600; white-space: nowrap; }

/* Service, proof and practice chapters */
.section, .pillars { padding-block: 6rem; }
.section--alt { background: #e7ece5; }
.section-heading { display: grid; grid-template-columns: 1.2fr 1fr; align-items: end; gap: 4rem; margin-bottom: 3rem; }
.section-title { font-size: clamp(2rem, 3.5vw, 3.25rem); margin: 0 0 2.5rem; }
.section-heading .section-title { margin: 0; }
.section-heading > p, .section-heading > div > p { color: var(--muted); margin: 0; max-width: 50ch; }
.section-heading > div > p { margin-bottom: 0.75rem; }
.section-intro { color: var(--muted); max-width: 65ch; margin: -1rem 0 2.5rem; }
.section-more { margin: 2rem 0 0; }
.services-layout { display: grid; grid-template-columns: 1.2fr 1fr; gap: 4rem; align-items: start; }
.service-row { border-top: 1px solid var(--border); padding-block: 1.5rem; }
.service-row h3 { font-size: 1.3rem; margin: 0 0 0.75rem; }
.service-row h3 a, .work-item h3 a, .product-grid h3 a { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; color: var(--ink); text-decoration: none; }
.service-row h3 a:hover, .work-item h3 a:hover, .product-grid h3 a:hover { color: var(--blue); }
.service-row h3 span, .work-item h3 span, .product-grid h3 span { color: var(--blue); flex-shrink: 0; }
.service-row p { color: var(--muted); margin: 0; max-width: 62ch; }
.service-list__more { border-top: 1px solid var(--border); padding-top: 1.25rem; width: 100%; }
.training-feature { background: var(--lime); padding: 2.5rem; border-radius: var(--radius); }
.training-feature h3 { font-size: clamp(2rem, 3vw, 2.75rem); letter-spacing: -0.04em; margin: 0 0 1.5rem; }
.training-feature p { margin-bottom: 1.5rem; }
.training-feature ul { list-style: none; padding: 0; margin: 0 0 2rem; }
.training-feature li { padding-block: 0.65rem; border-bottom: 1px solid #a5bd70; }
.training-feature__academy { display: block; font-size: 0.85rem; color: var(--ink); margin-top: 1.25rem; font-weight: 600; }
.work-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3rem 4rem; }
.work-item { border-top: 1px solid #aebcae; padding-top: 1.5rem; }
.work-item__client { font-size: 0.85rem; color: var(--muted); margin-bottom: 0.75rem; }
.work-item h3 { font-size: 1.65rem; letter-spacing: -0.025em; margin: 0 0 1rem; }
.work-item > p:not(.work-item__outcome) { color: var(--muted); }
.work-item__outcome { font-weight: 600; font-size: 0.85rem; margin: 1.5rem 0 0; }
.process-grid, .product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 3rem; }
.process-grid article { border-top: 2px solid var(--blue); padding-top: 1.5rem; }
.process-grid h3, .product-grid h3 { font-size: 1.5rem; letter-spacing: -0.025em; margin: 0 0 1rem; }
.process-grid p, .product-grid p { color: var(--muted); margin-bottom: 0; }
.product-grid { gap: 2.5rem; }
.product-grid article { display: flex; flex-direction: column; border-top: 1px solid #aebcae; padding-top: 1.5rem; }
.product-grid p { margin-bottom: 1.5rem; }
.product-grid .link-arrow { margin-top: auto; font-size: 0.9rem; }
.split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4rem; align-items: start; }
.split .section-title { margin-bottom: 1.5rem; }
.split p { color: var(--muted); }
.section--blue { background: var(--blue); color: var(--white); }
.section--blue p { color: var(--blue-text); }
.section--blue a { color: var(--lime); }
.section--blue strong { color: var(--white); }
.ai-evidence p { border-top: 1px solid #647fe0; padding-top: 1.25rem; margin-bottom: 1.5rem; }
.ai-evidence p:last-child { font-size: 0.9rem; margin-bottom: 0; }
.quote-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.5rem; }
.quote-card { display: flex; flex-direction: column; justify-content: space-between; gap: 2rem; margin: 0; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.quote-card blockquote { margin: 0; }
.quote-card blockquote p { margin: 0; }
.quote-card figcaption { color: var(--muted); font-size: 0.85rem; }
.quote-card figcaption strong { display: block; color: var(--ink); margin-bottom: 0.25rem; }
.organisation-details { border-top: 1px solid #aebcae; margin-top: 3rem; padding-top: 1.25rem; }
.organisation-details summary { color: var(--ink); font-weight: 600; padding-block: 0.5rem; }
.organisation-details .org-list { margin-top: 1.5rem; }
.org-list { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; margin: 0 0 1.25rem; padding: 0; }
.org-list li { color: var(--muted); font-size: 0.95rem; padding-block: 0.4rem; }
.note, .tools { color: var(--muted); font-size: 0.9rem; max-width: 70ch; }

/* Shared content surfaces */
.page-hero { padding-block: 4.5rem; background: var(--blue); color: var(--white); }
.page-hero h1 { font-size: clamp(2.75rem, 5vw, 4.5rem); max-width: 20ch; margin: 0 0 1.5rem; }
.page-hero .lede { color: var(--blue-text); max-width: 65ch; margin-bottom: 0; }
.page-hero .cta-row { margin-top: 2rem; }
.page-hero .btn--primary { background: var(--lime); color: var(--ink); }
.page-hero .btn--primary:hover { background: #e5f4bf; }
.page-hero :focus-visible { outline-color: var(--lime); }
.page-hero--dark { background: var(--ink); }
.content-section { padding-block: 4.5rem; }
.prose { max-width: 50rem; }
.prose h2 { font-size: 1.9rem; margin: 3rem 0 1.25rem; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 2rem; font-size: 1.3rem; }
.prose p { color: var(--muted); }
.prose strong { color: var(--ink); }
.prose li { margin-bottom: 0.4rem; }
.prose h2[id], .case-study { scroll-margin-top: 7rem; }
.content-section > .wrap + .wrap { margin-top: 2rem; }
.check-list { list-style: none; margin: 0 0 1.5rem; padding: 0; color: var(--muted); }
.check-list li { padding: 0.8rem 0 0.8rem 1.5rem; position: relative; border-bottom: 1px solid var(--border); }
.check-list li::before { content: ""; position: absolute; left: 0; top: 1.35rem; width: 6px; height: 6px; background: var(--blue); }
.pillar-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); gap: 2rem; }
.pillar-grid--wide { grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr)); }
.pillar-card { padding: 1.5rem 0 0; border-top: 1px solid var(--border); }
.pillar-card__index { display: inline-block; color: var(--blue); font-size: 0.85rem; font-weight: 600; }
.pillar-card h3 { font-size: 1.45rem; letter-spacing: -0.025em; margin: 0.75rem 0 1rem; }
.pillar-card h3 a { color: var(--ink); text-decoration: none; }
.pillar-card h3 a:hover { color: var(--blue); }
.pillar-card p { color: var(--muted); margin: 0 0 1.25rem; }
.pillar-card p:last-child { margin-bottom: 0; }
.course-status { font-size: 0.95rem; color: var(--muted); margin: -1rem 0 2rem; }
.case-list { max-width: 58rem; }
.case-study { border-top: 2px solid var(--blue); padding-block: 2rem; margin-bottom: 2rem; }
.case-study h2 { margin: 0.75rem 0 1rem; font-size: 2rem; }
.case-study h3 { font-size: 1.15rem; margin: 1.75rem 0 0.75rem; }
.case-study p { color: var(--muted); }
.case-study__meta { font-size: 0.9rem; color: var(--muted); }
.tools strong { color: var(--ink); }
.contact-email { margin: 2rem 0; }
.strip { border-block: 1px solid var(--border); }
.strip__inner { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr)); gap: 2rem; padding-block: 2.5rem; }
.stat { color: var(--blue); font-size: 2rem; font-weight: 700; margin-bottom: 0.5rem; }
.strip__item p:last-child { color: var(--muted); margin-bottom: 0; }

/* A direct, unmistakable close */
.cta-band { background: var(--blue); color: var(--white); padding-block: 5rem; }
.cta-band__inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 2rem 4rem; }
.cta-band h2 { font-size: clamp(2.5rem, 4vw, 4rem); margin: 0 0 1.25rem; }
.cta-band p { color: var(--blue-text); max-width: 48ch; margin: 0; }
.cta-band .btn--primary { background: var(--lime); color: var(--ink); }
.cta-band .btn--primary:hover { background: #e5f4bf; }
.cta-band a:not(.btn) { color: var(--white); }
.cta-band__email { display: block; margin-top: 1rem; font-size: 0.9rem; overflow-wrap: anywhere; }
.cta-band .cta-row { align-items: center; }
.site-footer { background: var(--ink); color: #c0cec5; padding-block: 3.5rem 1.5rem; }
.site-footer__top { display: flex; justify-content: space-between; align-items: center; gap: 2rem; padding-bottom: 2.5rem; }
.brand--footer { color: var(--white); }
.site-footer__top > p { color: var(--lime); margin: 0; line-height: 1.4; font-size: 1.1rem; }
.footer-directory { display: grid; grid-template-columns: 1fr 1fr 1fr 1.4fr; gap: 2rem; padding-block: 2.5rem 3.5rem; border-top: 1px solid #44594e; }
.footer-directory h2 { font-size: 0.9rem; letter-spacing: 0; color: var(--lime); margin: 0 0 1rem; }
.footer-directory ul, .site-footer__inner ul { list-style: none; margin: 0; padding: 0; }
.footer-directory li + li { margin-top: 0.6rem; }
.site-footer a:not(.brand) { color: #e1e9e2; font-size: 0.9rem; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-directory p { font-size: 0.8rem; margin-top: 0.75rem; }
.footer-email { overflow-wrap: anywhere; }
.site-footer__inner { display: flex; justify-content: space-between; align-items: start; gap: 2rem; padding-top: 1.5rem; border-top: 1px solid #44594e; }
.site-footer__inner p { font-size: 0.75rem; margin: 0.25rem 0; max-width: 90ch; }
.site-footer__inner a { white-space: nowrap; }

@media (max-width: 1100px) {
  .site-nav > ul { gap: 1.1rem; }
  .brand__text { font-size: 1rem; }
  .hero__inner { gap: 2.5rem; }
  .hero h1 { font-size: clamp(3.3rem, 5.5vw, 4.5rem); }
  .hero .cta-row { gap: 1rem; }
  .experience__inner { gap: 1.5rem; flex-wrap: wrap; }
  .experience ul { gap: 1.5rem; }
  .experience__inner > a { display: inline-block; }
  .section-heading, .services-layout, .split { gap: 2.5rem; }
  .training-feature { padding: 2rem; }
}

@media (max-width: 960px) {
  .site-header__inner { min-height: 4.75rem; }
  .site-nav--desktop { display: none; }
  .mobile-menu { display: block; }
  .mobile-menu > summary { display: flex; align-items: center; gap: 1.5rem; list-style: none; padding: 0.75rem 1rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.9rem; font-weight: 600; }
  .mobile-menu[open] > summary { background: var(--blue); border-color: var(--blue); color: var(--white); }
  .mobile-menu[open] > summary > span { transform: rotate(45deg); }
  .mobile-menu nav { position: absolute; top: 100%; left: 0; width: 100%; max-height: calc(100dvh - 5rem); overflow-y: auto; padding: 1rem 2rem 1.5rem; background: var(--paper); border-block: 1px solid var(--border); box-shadow: 0 14px 28px rgb(23 43 39 / 12%); }
  .mobile-menu ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 2rem; list-style: none; margin: 0; padding: 0; }
  .mobile-menu a { display: block; padding-block: 0.85rem; color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--border); font-weight: 600; }
  .mobile-menu a:hover, .mobile-menu a[aria-current="page"] { color: var(--blue); text-decoration: underline; }
  .hero { padding-block: 3.5rem; }
  .hero__inner { grid-template-columns: 1.2fr 1fr; gap: 2rem; }
  .hero h1 { font-size: 3.5rem; }
  .hero .lede { font-size: 1.1rem; }
  .service-index { padding: 1.5rem; }
  .service-index h2 { font-size: 1.4rem; }
  .field-mark { width: 3rem; }
  .experience__inner > p { width: 100%; }
  .experience__inner > p br { display: none; }
  .section, .pillars { padding-block: 4.5rem; }
  .section-heading, .services-layout { grid-template-columns: 1.1fr 1fr; gap: 2rem; }
  .section-title { font-size: 2.5rem; }
  .training-feature { padding: 1.75rem; }
  .training-feature h3 { font-size: 2.25rem; }
  .work-grid { gap: 2.5rem; }
  .process-grid, .product-grid, .quote-grid { gap: 1.5rem; }
  .footer-directory { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 2.5rem; }
}

@media (max-width: 720px) {
  .wrap { padding-inline: 1.25rem; }
  .hero__inner, .section-heading, .services-layout, .split { grid-template-columns: minmax(0, 1fr); }
  .hero { padding-block: 3rem; }
  .hero h1 { font-size: clamp(2.9rem, 8.5vw, 4rem); }
  .hero .lede { max-width: 48ch; }
  .hero__inner { gap: 2.5rem; }
  .hero .cta-row { align-items: flex-start; }
  .hero__note { max-width: 40ch; }
  .service-index { padding: 1.75rem; }
  .service-index h2 { font-size: 1.65rem; }
  .service-index__heading br { display: none; }
  .service-index__heading { align-items: center; }
  .service-index__heading h2 { max-width: 17ch; }
  .service-index__link { padding-block: 1rem; }
  .experience__inner { padding-block: 1.5rem; gap: 1.25rem; }
  .experience ul { flex: auto; width: 100%; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
  .experience li { font-size: 1rem; }
  .section, .pillars { padding-block: 3.5rem; }
  .section-heading { gap: 1.25rem; margin-bottom: 2.25rem; }
  .section-title { font-size: clamp(2rem, 6.5vw, 2.75rem); margin-bottom: 2rem; }
  .services-layout { gap: 2.5rem; }
  .service-row h3 { font-size: 1.25rem; }
  .training-feature { padding: 2rem; }
  .training-feature h3 { font-size: 2.5rem; }
  .work-grid { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
  .work-item h3 { font-size: 1.65rem; }
  .process-grid, .product-grid, .quote-grid { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
  .process-grid article { padding-top: 1.25rem; }
  .quote-card { gap: 1.25rem; }
  .split { gap: 2rem; }
  .page-hero { padding-block: 3rem; }
  .page-hero h1 { font-size: clamp(2.5rem, 8vw, 3.5rem); overflow-wrap: anywhere; }
  .lede { font-size: 1.1rem; }
  .content-section { padding-block: 3rem; }
  .prose h2 { font-size: 1.75rem; }
  .case-study h2 { font-size: 1.75rem; }
  .cta-band { padding-block: 3.5rem; }
  .cta-band__inner { display: block; }
  .cta-band h2 { font-size: 3rem; }
  .cta-band p { margin-bottom: 2rem; }
  .cta-band__inner > .btn { margin-top: 0.5rem; }
  .cta-band .cta-row { margin-top: 1.5rem; }
  .site-footer__top { align-items: flex-start; flex-direction: column; gap: 1.5rem; }
  .site-footer__top > p { font-size: 1rem; }
  .footer-directory { gap: 2rem 1.5rem; padding-block: 2rem; }
  .site-footer__inner { flex-direction: column-reverse; gap: 1rem; }
  .mobile-menu nav { padding-inline: 1.25rem; }
}

@media (max-width: 380px) {
  .brand { gap: 0.5rem; }
  .brand__text { font-size: 0.95rem; }
  .brand__mark { width: 32px; height: 32px; }
  .mobile-menu > summary { gap: 0.75rem; padding-inline: 0.75rem; }
  .hero h1 { font-size: 2.75rem; }
  .hero .btn { gap: 0.75rem; font-size: 0.9rem; }
  .service-index, .training-feature { padding: 1.25rem; }
  .footer-directory { grid-template-columns: minmax(0, 1fr); }
}

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