:root {
  --bt-color-red: #a31920;
  --bt-color-red-dark: #8a141a;
  --bt-color-dark: #2e2e30;
  --bt-color-white: #fff;
  --bt-color-surface: #f7f7f7;
  --bt-color-divider: #e4e4e5;
  --bt-color-text-secondary: #5f5f63;
  --bt-color-text-muted: #6b6b6f;
  --bt-font-sans: Archivo, Arial, Helvetica, sans-serif;
  --bt-container: 77.5rem;
  --bt-content: 47.5rem;
  --bt-gutter: clamp(1.25rem, 5vw, 4rem);
  --bt-section-space: clamp(4rem, 8vw, 7.25rem);
  --bt-border: 1px solid var(--bt-color-divider);
  --bt-focus: 2px solid var(--bt-color-red);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-wrap: break-word;
  color: var(--bt-color-dark);
  background: var(--bt-color-white);
  font-family: var(--bt-font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.admin-bar .site-header {
  top: 32px;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

[hidden] {
  display: none !important;
}

a {
  color: var(--bt-color-red);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--bt-color-red-dark);
}

:where(a, button, input, select, textarea):focus-visible {
  outline: var(--bt-focus);
  outline-offset: 4px;
}

h1,
h2,
h3,
h4 {
  margin-block: 0 0.65em;
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(2.25rem, 6vw, 4.25rem);
}

h2 {
  font-size: clamp(1.875rem, 4vw, 3.25rem);
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.625rem);
}

p,
ul,
ol {
  margin-block: 0 1.25rem;
}

.bt-container {
  width: min(100% - (2 * var(--bt-gutter)), var(--bt-container));
  margin-inline: auto;
}

.bt-container--narrow {
  max-width: var(--bt-content);
}

.bt-section {
  padding-block: var(--bt-section-space);
}

.bt-grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.bt-grid > * {
  min-width: 0;
}

.bt-button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--bt-color-red);
  color: var(--bt-color-white);
  background: var(--bt-color-red);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
}

.bt-button:hover {
  border-color: var(--bt-color-red-dark);
  color: var(--bt-color-white);
  background: var(--bt-color-red-dark);
}

.skip-link {
  position: fixed;
  z-index: 10000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--bt-color-white);
  background: var(--bt-color-dark);
  font-weight: 700;
  transform: translateY(-200%);
}

.skip-link:focus {
  color: var(--bt-color-white);
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: var(--bt-border);
  background: var(--bt-color-white);
}

.site-header::before {
  position: absolute;
  inset: 0 auto auto 0;
  width: clamp(3rem, 8vw, 7rem);
  height: 2px;
  background: var(--bt-color-red);
  content: '';
}

.site-header__inner {
  position: relative;
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-branding {
  min-width: 0;
}

.custom-logo-link {
  display: inline-block;
}

.custom-logo {
  width: auto;
  max-height: 3.25rem;
}

.menu-toggle {
  display: none;
  min-width: 3rem;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.5rem;
  border: 1px solid var(--bt-color-dark);
  color: var(--bt-color-dark);
  background: var(--bt-color-white);
  font: inherit;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.menu-toggle__icon {
  display: grid;
  width: 1.25rem;
  gap: 0.25rem;
}

.menu-toggle__icon span {
  height: 2px;
  background: currentcolor;
}

.site-header__navigation {
  position: absolute;
  top: 100%;
  right: calc(-1 * var(--bt-gutter));
  left: calc(-1 * var(--bt-gutter));
  display: block;
  padding: 1.25rem var(--bt-gutter) 1.5rem;
  border-bottom: var(--bt-border);
  background: var(--bt-color-white);
}

.js .site-header__navigation {
  display: none;
}

.js .menu-toggle {
  display: inline-flex;
}

.js .is-menu-open .site-header__navigation {
  display: block;
}

.primary-navigation__list,
.footer-navigation__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-navigation a {
  display: block;
  padding: 0.75rem 0;
  color: var(--bt-color-dark);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
}

.primary-navigation .current-menu-item > a,
.primary-navigation a:hover {
  color: var(--bt-color-red);
}

.site-header__cta {
  width: 100%;
  margin-top: 1rem;
}

.page-entry__header,
.archive-header {
  padding-bottom: clamp(1.5rem, 4vw, 2.5rem);
  border-bottom: 2px solid var(--bt-color-red);
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.entry-content > :first-child {
  margin-top: 0;
}

.entry-content > :last-child {
  margin-bottom: 0;
}

.bt-grid--posts {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
}

.post-card {
  padding-top: 1.5rem;
  border-top: 2px solid var(--bt-color-red);
}

.post-card__title {
  font-size: clamp(1.25rem, 2.5vw, 1.625rem);
}

.post-card__title a {
  color: inherit;
  text-decoration: none;
}

.site-footer {
  padding-top: clamp(3rem, 6vw, 5rem);
  border-top: 3px solid var(--bt-color-red);
  color: var(--bt-color-white);
  background: var(--bt-color-dark);
}

.site-footer a {
  color: var(--bt-color-white);
}

.footer-navigation__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

.footer-navigation a {
  font-weight: 600;
  text-decoration-thickness: 1px;
}

.site-footer__meta {
  padding-block: 1.25rem;
  border-top: 1px solid #505054;
  color: #d0d0d2;
  font-size: 0.875rem;
}

.site-footer__meta p {
  margin: 0;
}

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

@media (min-width: 72rem) {
  .site-header__inner {
    min-height: 5.5rem;
  }

  .menu-toggle {
    display: none;
  }

  .js .menu-toggle {
    display: none;
  }

  .site-header__navigation,
  .js .site-header__navigation {
    position: static;
    display: flex;
    align-items: center;
    gap: clamp(1.25rem, 3vw, 2.5rem);
    padding: 0;
    border: 0;
  }

  .primary-navigation__list {
    display: flex;
    align-items: center;
    gap: clamp(0.75rem, 1.8vw, 1.75rem);
  }

  .primary-navigation a {
    padding: 1rem 0;
  }

  .site-header__cta {
    width: auto;
    margin-top: 0;
  }
}

@media (max-width: 48.875rem) {
  body.admin-bar .site-header {
    top: 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* Homepage */
.section-label { margin: 0 0 1.25rem; color: var(--bt-color-red); font-size: .78125rem; font-weight: 800; letter-spacing: .2em; text-transform: uppercase; }
.section-intro { display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: clamp(2rem, 5vw, 4.5rem); margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-intro :is(h2, p) { margin: 0; }
.section-intro p, .lead-copy { color: var(--bt-color-text-secondary); font-size: 1.03125rem; line-height: 1.7; }
.button-group { display: flex; flex-wrap: wrap; align-items: center; gap: .875rem; margin-top: 2.25rem; }
.bt-button--outline { border-color: var(--bt-color-dark); color: var(--bt-color-dark); background: transparent; }
.bt-button--outline:hover { border-color: var(--bt-color-dark); color: var(--bt-color-dark); background: var(--bt-color-surface); }
.text-link { display: inline-flex; align-items: center; gap: .625rem; color: var(--bt-color-red); font-size: .8125rem; font-weight: 800; letter-spacing: .12em; text-decoration: none; text-transform: uppercase; }
.red-rule { display: block; width: 4rem; height: .25rem; margin-block: 1.75rem; background: var(--bt-color-red); }
.home-media, .service-card__image, .contact-image, .management-panel__image { overflow: hidden; background: #f1f1f2; }
.home-media img, .service-card__image img, .contact-image img, .management-panel__image img { width: 100%; height: 100%; object-fit: cover; }
.home-hero { border-bottom: 2px solid var(--bt-color-dark); }
.home-hero__grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(20rem, .88fr); align-items: center; gap: clamp(2.5rem, 6vw, 5rem); padding-block: clamp(3rem, 6vw, 5.5rem) clamp(3.5rem, 7vw, 6rem); }
.architectural-line { margin-bottom: 1.625rem; overflow: visible; }
.architectural-line path { fill: none; stroke: var(--bt-color-red); stroke-width: 4; }
.home-hero h1 { max-width: 12ch; margin: 0; font-size: clamp(2.75rem, 4.75vw, 4.25rem); line-height: 1.04; }
.home-hero__intro { max-width: 56ch; margin: 1.75rem 0 0; color: var(--bt-color-text-secondary); font-size: 1.0625rem; line-height: 1.7; }
.home-hero__benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; margin: 2.75rem 0 0; padding: 2rem 0 0; border-top: var(--bt-border); list-style: none; }
.home-hero__benefits li { display: flex; gap: .75rem; font-size: .90625rem; line-height: 1.5; }
.home-hero__benefits li::before { width: .5625rem; height: .5625rem; margin-top: .4rem; background: var(--bt-color-red); content: ''; flex: none; }
.home-hero__media { position: relative; aspect-ratio: 4 / 5; overflow: visible; border: var(--bt-border); }
.home-hero__media img { overflow: hidden; }
.home-hero__media::after { position: absolute; bottom: -.625rem; left: -.625rem; width: 7.5rem; height: 7.5rem; border-bottom: 4px solid var(--bt-color-red); border-left: 4px solid var(--bt-color-red); content: ''; pointer-events: none; }
.service-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 3vw, 2.5rem); }
.service-card { display: flex; min-width: 0; border: var(--bt-border); flex-direction: column; }
.service-card__image { aspect-ratio: 4 / 3; border-bottom: var(--bt-border); }
.service-card__body { display: flex; padding: clamp(1.5rem, 2.4vw, 2.125rem); flex: 1; flex-direction: column; }
.service-card__number { display: flex; align-items: center; gap: .625rem; margin-bottom: 1.125rem; color: var(--bt-color-text-secondary); font-size: .78125rem; font-weight: 800; letter-spacing: .18em; }
.service-card__number span { width: .5625rem; height: .5625rem; background: var(--bt-color-red); }
.service-card h3 { font-size: 1.625rem; }
.service-card__description { color: var(--bt-color-text-secondary); font-size: .96875rem; }
.service-card ul { display: grid; gap: .625rem; margin: .25rem 0 1.75rem; padding: 1.25rem 0 0; border-top: 1px solid #ededee; list-style: none; }
.service-card li { display: flex; align-items: center; gap: .625rem; font-size: .875rem; }
.service-card li::before { width: .375rem; height: .375rem; background: var(--bt-color-red); content: ''; flex: none; }
.service-card .text-link { margin-top: auto; }
.service-spectrum { border-block: 2px solid var(--bt-color-dark) var(--bt-border); background: var(--bt-color-surface); }
.spectrum-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin: 0; padding: 1px; background: var(--bt-color-divider); list-style: none; }
.spectrum-grid li { min-height: 9rem; padding: 1.75rem 1.625rem; background: var(--bt-color-white); }
.spectrum-grid__mark { display: block; margin-bottom: 1.125rem; color: var(--bt-color-red); font-size: .75rem; font-weight: 800; letter-spacing: .18em; }
.spectrum-grid h3 { margin: 0; font-size: 1.0625rem; }
.spectrum-grid p { margin: .625rem 0 0; color: var(--bt-color-text-muted); font-size: .875rem; line-height: 1.6; }
.editorial-split { display: grid; grid-template-columns: minmax(18rem, .82fr) minmax(0, 1.18fr); align-items: center; gap: clamp(3rem, 8vw, 7rem); }
.home-about__media { aspect-ratio: 5 / 6; }
.home-about h2 { max-width: 14ch; }
.fact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin: 2.5rem 0 0; padding-top: 2rem; border-top: var(--bt-border); }
.fact-grid div, .contact-card dl div { margin: 0; }
.fact-grid dt, .contact-card dt { margin-bottom: .5rem; color: var(--bt-color-red); font-size: .71875rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.fact-grid dd { margin: 0; }
.home-management { padding-block: clamp(4rem, 8vw, 7.25rem); background: var(--bt-color-surface); }
.management-panel { display: grid; grid-template-columns: 1fr 1fr; background: var(--bt-color-dark); color: var(--bt-color-white); }
.management-panel__content { display: flex; justify-content: center; padding: clamp(2rem, 4vw, 3.5rem); flex-direction: column; }
.management-panel h2 { margin: 0; color: var(--bt-color-white); font-size: clamp(2rem, 3vw, 2.5rem); }
.management-panel__role { margin: .875rem 0 0; color: #c9c9cc; font-size: .875rem; }
.management-panel__content > p:last-of-type { color: #d5d5d8; line-height: 1.75; }
.management-panel__image { aspect-ratio: 1; border-left: 1px solid #4a4a4c; }
.text-link--light { color: var(--bt-color-white); }
.home-why { border-top: 2px solid var(--bt-color-dark); }
.home-why h2 { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(1.75rem, 3.5vw, 3rem); }
.why-grid article { padding-top: 1.625rem; border-top: 2px solid var(--bt-color-red); }
.why-grid__symbol { display: block; margin-bottom: 1.25rem; font-size: 1.625rem; font-weight: 600; }
.why-grid h3 { font-size: 1.25rem; }
.why-grid p, .process-grid p { margin: 0; color: var(--bt-color-text-secondary); font-size: .9375rem; }
.home-process { border-block: var(--bt-border); background: var(--bt-color-surface); }
.home-process h2 { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(1.25rem, 3vw, 2.5rem); margin: 0; padding: 0; list-style: none; }
.process-grid li { padding: 1.875rem 1.625rem 2.125rem; border: var(--bt-border); background: var(--bt-color-white); }
.process-grid li > span { display: block; margin-bottom: 1.375rem; color: var(--bt-color-red); font-size: 2.75rem; font-weight: 800; line-height: 1; }
.process-grid h3 { font-size: 1.1875rem; }
.home-cta { padding-block: var(--bt-section-space); color: var(--bt-color-white); background: var(--bt-color-dark); }
.home-cta__grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(2.25rem, 5vw, 4.5rem); }
.home-cta h2 { margin: 0; color: var(--bt-color-white); }
.home-cta p { margin: 0; color: #d5d5d8; font-size: 1.03125rem; line-height: 1.75; }
.home-cta__email { color: var(--bt-color-white); font-size: .875rem; font-weight: 800; letter-spacing: .04em; }
.home-contact__grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2.5rem, 6vw, 5rem); }
.contact-form__status:empty { display: none; }
.form-notice { padding: 1rem; border-left: 3px solid var(--bt-color-red); background: var(--bt-color-surface); color: var(--bt-color-dark); }
.form-notice--success { border-color: #28733c; }
.form-notice ul { margin: .75rem 0 0; padding-left: 1.25rem; }
.form-notice a { font-weight: 600; }
.contact-form fieldset { display: grid; gap: 1.25rem; margin: 0; padding: 0; border: 0; }
.contact-form { position: relative; display: grid; gap: 1.25rem; }
.contact-form__required { margin: 0; color: var(--bt-color-text-secondary); font-size: .875rem; }
.contact-form__honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.contact-form label:not(.checkbox-label) { display: grid; gap: .625rem; color: var(--bt-color-text-secondary); font-size: .75rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.contact-form :is(input, select, textarea) { width: 100%; min-height: 3.25rem; padding: .875rem 1rem; border: 1px solid #d9d9db; border-radius: 0; background: var(--bt-color-white); font: inherit; }
.contact-form textarea { min-height: 8rem; resize: vertical; }
.checkbox-label { display: flex; align-items: flex-start; gap: .875rem; color: var(--bt-color-text-secondary); font-size: .84375rem; }
.checkbox-label input { width: 1.375rem; min-height: 1.375rem; margin: .125rem 0 0; flex: none; }
.field-error { margin: -.75rem 0 0; color: var(--bt-color-red-dark); font-size: .875rem; font-weight: 600; }
.contact-form [aria-invalid="true"] { border-color: var(--bt-color-red); border-width: 2px; }
.contact-form .bt-button { justify-self: start; cursor: pointer; }
.contact-card { padding: clamp(1.75rem, 3.2vw, 2.75rem); border: var(--bt-border); background: var(--bt-color-surface); }
.contact-card__title { margin: 0; font-size: 1.375rem; }
.contact-card > p { color: var(--bt-color-text-muted); font-size: .84375rem; }
.contact-card dl { display: grid; gap: 1.5rem; margin: 0; }
.contact-card dd { margin: 0; }
.contact-card a { color: var(--bt-color-dark); }
.contact-image { aspect-ratio: 16 / 10; border: var(--bt-border); border-top: 0; }
.contact-page__hero { padding-block: clamp(3.5rem, 7vw, 6rem); border-bottom: 2px solid var(--bt-color-dark); background: var(--bt-color-surface); }
.contact-page__hero h1 { max-width: 12ch; margin-bottom: 1rem; }
.contact-page__hero p:last-child { max-width: 42rem; margin: 0; color: var(--bt-color-text-secondary); font-size: clamp(1.0625rem, 2vw, 1.25rem); }
.contact-page__grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(18rem, .9fr); gap: clamp(2.5rem, 6vw, 5rem); }
.contact-page__grid > * { min-width: 0; }
.contact-page__grid > div > h2 { margin-bottom: 2rem; font-size: clamp(1.75rem, 3vw, 2.5rem); }
.contact-page__details { align-self: start; }
.site-branding__fallback { display: flex; align-items: center; gap: 1rem; color: var(--bt-color-dark); font-size: .75rem; font-weight: 800; letter-spacing: .14em; line-height: 1.35; text-decoration: none; text-transform: uppercase; }
.site-branding__fallback img { width: 3rem; height: 3rem; object-fit: contain; }
.site-branding__fallback span { padding-left: 1rem; border-left: var(--bt-border); }
.site-footer { border-top: 4px solid var(--bt-color-red); }
.site-footer__grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: clamp(2rem, 4vw, 4rem); padding-block: clamp(3.5rem, 6vw, 5.5rem) 2.5rem; }
.site-footer__brand p { max-width: 36rem; color: #c9c9cc; }
.site-footer__heading { margin: 0 0 1.25rem; color: #a8a8ab; font-size: .71875rem; letter-spacing: .18em; text-transform: uppercase; }
.site-footer__grid p { font-size: .9375rem; }
.site-footer__grid a { color: var(--bt-color-white); overflow-wrap: anywhere; }
.site-footer__grid a:focus-visible, .home-cta a:focus-visible, .management-panel a:focus-visible { outline-color: var(--bt-color-white); }
.site-footer__meta { padding-block: 1.5rem 2.75rem; border-top: 1px solid #45454a; }
.site-footer__meta p { margin: 0; }

@media (max-width: 71.9375rem) {
  .home-hero__grid { grid-template-columns: minmax(0, 1.08fr) minmax(17rem, .92fr); gap: 2.5rem; }
  .home-hero h1 { font-size: clamp(2.5rem, 5.5vw, 3.5rem); }
  .home-hero__benefits { grid-template-columns: 1fr; gap: .75rem; }
  .service-cards { grid-template-columns: repeat(2, 1fr); }
  .service-card:last-child { grid-column: 1 / -1; width: auto; }
  .spectrum-grid, .why-grid, .process-grid { grid-template-columns: repeat(2, 1fr); }
  .site-footer__grid { grid-template-columns: 2fr 1fr 1fr; }
  .site-footer__grid > :last-child { grid-column: 2 / -1; }
}

@media (max-width: 55rem) {
  :root { --bt-section-space: clamp(3.5rem, 12vw, 5rem); }
  .section-intro, .home-cta__grid, .home-contact__grid, .contact-page__grid { grid-template-columns: 1fr; }
  .home-hero__grid { grid-template-columns: 1fr; padding-top: 2.75rem; }
  .home-hero h1 { max-width: 14ch; font-size: clamp(2.5rem, 8vw, 3.25rem); }
  .home-hero__media { width: min(100%, 31rem); margin-inline: auto; }
  .service-cards { grid-template-columns: 1fr; }
  .service-card:last-child { grid-column: auto; width: auto; }
  .editorial-split { grid-template-columns: 1fr; }
  .home-about__media { width: min(100%, 30rem); }
  .management-panel { grid-template-columns: 1fr; }
  .management-panel__image { border-top: 1px solid #4a4a4c; border-left: 0; }
  .site-footer__grid { grid-template-columns: repeat(2, 1fr); }
  .site-footer__brand { grid-column: 1 / -1; }
  .site-footer__grid > :last-child { grid-column: auto; }
}

@media (max-width: 29rem) {
  :root { --bt-gutter: 1.25rem; }
  .home-hero h1 { font-size: clamp(2.25rem, 10.5vw, 2.75rem); }
  .architectural-line { width: 8.75rem; }
  .button-group .bt-button { width: 100%; }
  .spectrum-grid, .why-grid, .process-grid, .fact-grid, .form-grid, .site-footer__grid { grid-template-columns: 1fr; }
  .spectrum-grid li { min-height: 7.5rem; }
  .site-footer__grid > :last-child { grid-column: auto; }
  .site-branding__fallback { gap: .5rem; }
  .site-branding__fallback img { width: 2.75rem; height: 2.75rem; }
  .site-branding__fallback span { padding-left: .75rem; font-size: .65rem; }
  .contact-form .bt-button { width: 100%; }
}

.screen-reader-text {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-footer { padding-top: 0; }
.site-footer .footer-navigation__list { display: grid; gap: .75rem; margin: 0; padding: 0; list-style: none; }

/* Error page */
.error-404 { display: grid; min-height: clamp(30rem, 65vh, 44rem); align-items: center; background: var(--bt-color-surface); }
.error-404__inner { padding-block: var(--bt-section-space); }
.error-404 h1 { max-width: 13ch; margin-bottom: 1.25rem; }
.error-404__copy { max-width: 42rem; color: var(--bt-color-text-secondary); font-size: clamp(1.0625rem, 2vw, 1.25rem); }
.error-404__navigation { display: flex; flex-wrap: wrap; align-items: center; gap: .875rem 1.5rem; margin-top: 2.25rem; }

/* Phase 4 internal pages */
.page-hero { padding-block: clamp(4rem, 8vw, 7rem); border-bottom: 2px solid var(--bt-color-dark); background: var(--bt-color-surface); }
.page-hero__inner { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(17rem, .75fr); gap: clamp(2rem, 6vw, 6rem); align-items: end; }
.page-hero__inner .section-label { grid-column: 1 / -1; margin-bottom: -.5rem; }
.page-hero h1 { max-width: 17ch; margin: 0; }
.page-hero__inner > p:last-child { margin: 0; color: var(--bt-color-text-secondary); font-size: 1.0625rem; }
.spectrum-grid--titles li { display: flex; min-height: 8.5rem; flex-direction: column; justify-content: space-between; }
.spectrum-grid--titles h3 { max-width: 22ch; }

/* Services overview */
.services-overview .services-focus { padding-bottom: 0; }
.services-overview .services-features { margin-top: clamp(4rem, 8vw, 7rem); }
.services-overview .services-feature { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(20rem, .9fr); border-block: 2px solid var(--bt-color-dark); }
.services-overview .services-feature + .services-feature { margin-top: clamp(3rem, 6vw, 5rem); }
.services-overview .services-feature--reverse { grid-template-columns: minmax(20rem, .9fr) minmax(0, 1.1fr); }
.services-overview .services-feature--reverse .services-feature__media { grid-column: 2; }
.services-overview .services-feature--reverse .services-feature__content { grid-column: 1; grid-row: 1; border-right: var(--bt-border); border-left: 0; }
.services-overview .services-feature__media { position: relative; min-height: 30rem; background: #f1f1f2; }
.services-overview .services-feature__media img { width: 100%; height: 100%; object-fit: cover; }
.services-overview .services-feature__media::after { position: absolute; bottom: -.625rem; left: -.625rem; width: 6rem; height: 6rem; border-bottom: 4px solid var(--bt-color-red); border-left: 4px solid var(--bt-color-red); content: ''; pointer-events: none; }
.services-overview .services-feature--reverse .services-feature__media::after { right: -.625rem; left: auto; border-right: 4px solid var(--bt-color-red); border-left: 0; }
.services-overview .services-feature__badge { position: absolute; top: 0; right: 0; display: grid; width: 3rem; height: 3rem; place-items: center; color: var(--bt-color-white); background: var(--bt-color-dark); font-size: .75rem; font-weight: 800; letter-spacing: .12em; line-height: 1; }
.services-overview .services-feature--reverse .services-feature__badge { right: auto; left: 0; }
.services-overview .services-feature__content { display: flex; justify-content: center; padding: clamp(2.25rem, 5vw, 4.75rem); border-left: var(--bt-border); flex-direction: column; }
.services-overview .services-feature__content .section-label { margin-bottom: 1.5rem; }
.services-overview .services-feature__content h3 { max-width: 18ch; font-size: clamp(1.875rem, 3.4vw, 3rem); }
.services-overview .services-feature__content > p:not(.section-label) { color: var(--bt-color-text-secondary); }
.services-overview .services-feature__content ul { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; margin: .5rem 0 2rem; padding: 1.25rem 0 0; border-top: var(--bt-border); list-style: none; }
.services-overview .services-feature__content li { display: flex; align-items: center; gap: .5rem; font-size: .875rem; }
.services-overview .services-feature__content li::before { width: .375rem; height: .375rem; background: var(--bt-color-red); content: ''; flex: none; }
.services-overview .services-feature__content .bt-button { align-self: flex-start; }
.services-overview .services-focus-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.25rem, 3vw, 2rem); margin-top: clamp(4rem, 7vw, 6rem); }
.services-overview .services-focus-card { display: grid; min-width: 0; min-height: 22rem; grid-template-columns: minmax(0, 1.65fr) minmax(8.5rem, .75fr); border-block-start: 2px solid var(--bt-color-dark); border-block-end: var(--bt-border); border-inline: var(--bt-border); }
.services-overview .services-focus-card__media { grid-column: 2; grid-row: 1; min-width: 0; overflow: hidden; background: #f1f1f2; }
.services-overview .services-focus-card__media img { width: 100%; height: 100%; object-fit: cover; }
.services-overview .services-focus-card__content { display: flex; min-width: 0; padding: clamp(1.75rem, 3vw, 2.75rem); border-right: var(--bt-border); flex-direction: column; }
.services-overview .services-focus-card__number { margin: 0 0 1.25rem; color: var(--bt-color-red); font-size: .75rem; font-weight: 800; letter-spacing: .18em; }
.services-overview .services-focus-card__rule { width: 2.75rem; height: 3px; margin: .25rem 0 1.75rem; background: var(--bt-color-red); }
.services-overview .services-focus-card h3 { max-width: 20ch; font-size: clamp(1.375rem, 2.2vw, 1.75rem); }
.services-overview .services-focus-card__content > p:not(.services-focus-card__number) { color: var(--bt-color-text-secondary); font-size: .9375rem; }
.services-overview .services-focus-card .text-link { margin-top: auto; }
.services-overview .service-spectrum { margin-top: var(--bt-section-space); }

.service-hero { padding-block: clamp(3rem, 7vw, 6rem); border-bottom: 2px solid var(--bt-color-dark); }
.service-hero__grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(20rem, .95fr); gap: clamp(2.5rem, 6vw, 6rem); align-items: center; }
.service-hero h1 { max-width: 14ch; margin: 0; font-size: clamp(2.5rem, 5vw, 4rem); }
.service-hero__lead { max-width: 52ch; margin: 1.5rem 0 0; color: var(--bt-color-text-secondary); font-size: clamp(1.0625rem, 1.6vw, 1.25rem); }
.service-hero__image { position: relative; aspect-ratio: 4 / 3; border: var(--bt-border); }
.service-hero__image::after { position: absolute; right: -.625rem; bottom: -.625rem; width: 6rem; height: 6rem; border-right: 4px solid var(--bt-color-red); border-bottom: 4px solid var(--bt-color-red); content: ''; pointer-events: none; }
.service-hero__image img { width: 100%; height: 100%; object-fit: cover; }
.service-details__grid { display: grid; grid-template-columns: minmax(17rem, .8fr) minmax(0, 1.2fr); gap: clamp(3rem, 7vw, 7rem); align-items: start; }
.service-details h2 { max-width: 13ch; }
.service-item-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin: 0; padding: 1px; background: var(--bt-color-divider); list-style: none; }
.service-item-grid li { min-height: 10rem; padding: clamp(1.5rem, 3vw, 2rem); background: var(--bt-color-surface); }
.service-item-grid span { display: block; margin-bottom: 2rem; color: var(--bt-color-red); font-size: .75rem; font-weight: 800; letter-spacing: .18em; }
.service-item-grid h3 { margin: 0; font-size: clamp(1.125rem, 2vw, 1.375rem); }
.service-process { border-block: var(--bt-border); background: var(--bt-color-surface); }
.service-process h2 { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.related-services__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.5rem, 3vw, 2.5rem); }
.related-services__grid article { display: flex; min-height: 18rem; padding: clamp(1.75rem, 3vw, 2.5rem); border: var(--bt-border); flex-direction: column; }
.related-services__grid article > p:not(.service-card__number) { color: var(--bt-color-text-secondary); }
.related-services__grid .text-link { margin-top: auto; }
.about-page__hero { border-bottom: 2px solid var(--bt-color-dark); }
.about-page__hero h1 { max-width: 14ch; font-size: clamp(2.5rem, 5vw, 4rem); }
.about-page__services .section-intro { margin-bottom: 0; }
.about-page__services .text-link { margin-top: 1.25rem; }

@media (max-width: 71.9375rem) {
  .page-hero__inner, .service-details__grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
  .service-hero__grid { grid-template-columns: minmax(0, 1.05fr) minmax(18rem, .95fr); gap: 2.5rem; }
}

@media (max-width: 55rem) {
  .page-hero__inner, .service-hero__grid, .service-details__grid { grid-template-columns: 1fr; }
  .page-hero__inner .section-label { grid-column: auto; margin-bottom: 0; }
  .page-hero h1, .service-hero h1, .about-page__hero h1 { font-size: clamp(2.35rem, 9vw, 3.25rem); }
  .service-hero__image { width: min(100%, 36rem); }
  .services-overview .services-feature, .services-overview .services-feature--reverse { grid-template-columns: 1fr; }
  .services-overview .services-feature__media, .services-overview .services-feature--reverse .services-feature__media { grid-column: 1; grid-row: 1; min-height: 0; aspect-ratio: 5 / 4; }
  .services-overview .services-feature__content, .services-overview .services-feature--reverse .services-feature__content { grid-column: 1; grid-row: 2; border-top: var(--bt-border); border-right: 0; border-left: 0; }
  .services-overview .services-focus-grid { grid-template-columns: 1fr; }
  .services-overview .services-focus-card { min-height: 0; grid-template-columns: 1fr; }
  .services-overview .services-focus-card__media { grid-column: 1; grid-row: 1; aspect-ratio: 5 / 2; }
  .services-overview .services-focus-card__content { grid-column: 1; grid-row: 2; border-top: var(--bt-border); border-right: 0; }
  .services-overview .services-focus-card .text-link { margin-top: 1rem; }
}

@media (max-width: 29rem) {
  .error-404__navigation .bt-button { width: 100%; }
  .service-item-grid, .related-services__grid { grid-template-columns: 1fr; }
  .service-item-grid li { min-height: 8rem; }
  .related-services__grid article { min-height: 16rem; }
  .services-overview .services-feature__content { padding-inline: 1.5rem; }
  .services-overview .services-feature__content .bt-button { width: 100%; }
  .services-overview .services-focus-card__media { aspect-ratio: 5 / 3; }
  .services-overview .services-focus-card__content { padding: 1.5rem; }
}