:root {
  --bt-navy: #10215f;
  --bt-navy-2: #0a1644;
  --bt-blue: #10215f;
  --bt-gold: #dbb34c;
  --bt-gold-light: #f3e6bd;
  --bt-orange: #dbb34c;
  --bt-ink: #10215f;
  --bt-muted: #59647b;
  --bt-steel: #dde2e8;
  --bt-paper: #f7f7f4;
  --bt-white: #ffffff;
  --bt-site-background: #f2f2f2;
  --bt-font-body: Arial, Helvetica, sans-serif;
  --bt-font-heading: Georgia, 'Times New Roman', serif;
  --bt-font-technical: Arial, Helvetica, sans-serif;
  --bt-shell: 1240px;
  --bt-header: 86px;
  --bt-shadow: 0 24px 64px rgba(7, 25, 66, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.bt-site { margin: 0; color: var(--bt-ink); background: var(--bt-site-background); font-family: var(--bt-font-body); font-size: 1rem; line-height: 1.65; -webkit-font-smoothing: antialiased; }
body.bt-nav-open { overflow: hidden; }
.bt-site img { display: block; max-width: 100%; height: auto; }
.bt-site a { color: inherit; }
.bt-site button, .bt-site input, .bt-site select, .bt-site textarea { font: inherit; }
.bt-site :focus-visible { outline: 3px solid var(--bt-gold); outline-offset: 3px; }
.bt-shell { width: min(calc(100% - 48px), var(--bt-shell)); margin-inline: auto; }
.bt-main { overflow: hidden; }
.bt-skip-link { position: fixed; z-index: 9999; top: 12px; left: 12px; padding: 12px 18px; color: var(--bt-navy); background: var(--bt-white); box-shadow: var(--bt-shadow); transform: translateY(-150%); }
.bt-skip-link:focus { transform: none; }
.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; }

.bt-header { position: absolute; z-index: 100; top: 0; left: 0; right: 0; color: var(--bt-white); background: rgba(16,33,95,.97); border-bottom: 1px solid rgba(255,255,255,.14); transition: background-color .25s ease, box-shadow .25s ease; }
.bt-header.is-scrolled { position: fixed; background: rgba(16,33,95,.99); box-shadow: 0 10px 32px rgba(7, 20, 60, .2); }
.bt-header__inner { min-height: var(--bt-header); display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.bt-brand { flex: 0 0 auto; }
.bt-header .bt-brand { display: flex; align-items: center; gap: 12px; padding: 0; background: transparent; }
.bt-brand__fallback, .bt-brand .custom-logo-link { display: block; width: 196px; background: transparent; text-decoration: none; }
.bt-brand__fallback img, .bt-brand .custom-logo { width: 196px; height: auto; max-height: 72px; object-fit: contain; object-position: center; }
.bt-header .bt-brand__fallback, .bt-header .bt-brand .custom-logo-link { display: grid; place-items: center; width: 88px; min-height: 70px; padding: 4px 6px; background: var(--bt-white); }
.bt-header .bt-brand__fallback img, .bt-header .bt-brand .custom-logo { width: 76px; max-height: 62px; object-position: center; }
.bt-brand__name { padding-left: 12px; border-left: 1px solid rgba(255,255,255,.3); color: var(--bt-white); font-size: .76rem; font-weight: 800; line-height: 1.2; letter-spacing: .1em; text-transform: uppercase; white-space: nowrap; }
.bt-nav { display: flex; align-items: center; gap: 28px; }
.bt-menu { display: flex; align-items: center; gap: 30px; padding: 0; margin: 0; list-style: none; }
.bt-menu a { position: relative; display: inline-block; padding: 30px 0 27px; font-size: .86rem; font-weight: 700; letter-spacing: .035em; text-decoration: none; }
.bt-menu a::after { content: ''; position: absolute; left: 0; right: 100%; bottom: 21px; height: 2px; background: var(--bt-gold); transition: right .2s ease; }
.bt-menu a:hover::after, .bt-menu a:focus-visible::after, .bt-menu .current-menu-item a::after { right: 0; }
.bt-nav__cta, .bt-button { display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 52px; padding: 13px 18px; border: 1px solid transparent; font-size: .83rem; font-weight: 800; letter-spacing: .055em; text-transform: uppercase; text-decoration: none; transition: transform .2s ease, background .2s ease, color .2s ease, border .2s ease; }
.bt-nav__cta { min-height: 44px; padding: 9px 14px; color: var(--bt-navy); background: var(--bt-gold); }
.bt-nav__cta:hover, .bt-button:hover { transform: translateY(-2px); }
.bt-nav__cta:hover, .bt-nav__cta:focus-visible { color: var(--bt-navy); background: var(--bt-white); border-color: var(--bt-white); }
.bt-nav-toggle { display: none; padding: 10px 0; border: 0; color: inherit; background: transparent; }
.bt-nav-toggle__label { font-size: .8rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.bt-nav-toggle__icon { display: grid; gap: 6px; margin-left: 10px; }
.bt-nav-toggle__icon i { display: block; width: 24px; height: 2px; background: currentColor; transition: transform .2s ease; }

.bt-kicker { display: flex; align-items: center; gap: 12px; margin: 0 0 22px; color: var(--bt-blue); font-size: .75rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.bt-kicker span { display: inline-flex; align-items: center; justify-content: center; min-width: 31px; height: 31px; padding-inline: 6px; border: 1px solid currentColor; color: var(--bt-orange); font-size: .67rem; }
.bt-kicker > span { display: none; }
.bt-kicker--light { color: var(--bt-gold-light); }
.bt-kicker--light span { color: var(--bt-gold); }
.bt-hero { position: relative; min-height: 860px; color: var(--bt-navy); background: var(--bt-site-background); isolation: isolate; }
.bt-hero::before { content: ''; position: absolute; z-index: -1; inset: 0 42% 0 0; background: linear-gradient(90deg, var(--bt-site-background) 0%, var(--bt-site-background) 78%, transparent 100%); }
.bt-hero__image { position: absolute; z-index: -2; inset: 0 0 0 46%; background-image: linear-gradient(90deg, rgba(242,242,242,.62), rgba(242,242,242,0) 30%), var(--bt-image-home-hero, url('../images/hueco-ascensor.jpg')); background-position: center; background-size: cover; background-repeat: no-repeat; filter: saturate(.72) contrast(1.03); }
.bt-hero__inner { min-height: 860px; display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(230px, .55fr); gap: 11%; align-items: center; padding-top: var(--bt-header); }
.bt-hero__copy { max-width: 770px; }
.bt-hero h1, .bt-page-hero h1, .bt-about-hero h1, .bt-contact h1 { margin: 0; font-family: var(--bt-font-heading); font-weight: 400; line-height: .98; letter-spacing: -.045em; text-wrap: balance; }
.bt-hero h1 { max-width: 790px; font-size: clamp(3.2rem, 4.8vw, 5.2rem); }
.bt-hero__lead { max-width: 630px; margin: 34px 0 0; color: #4d5968; font-size: 1.14rem; line-height: 1.75; }
.bt-hero__actions { display: flex; align-items: center; gap: 28px; margin-top: 42px; }
.bt-button--gold { color: var(--bt-navy); background: var(--bt-gold); }
.bt-button--gold:hover, .bt-button--gold:focus-visible { color: var(--bt-white); background: var(--bt-navy); border-color: var(--bt-navy); }
.bt-green .bt-button--gold:hover, .bt-green .bt-button--gold:focus-visible { color: var(--bt-navy); background: var(--bt-white); border-color: var(--bt-white); }
.bt-button--navy { color: var(--bt-white); background: var(--bt-navy); }
.bt-button--navy:hover { background: var(--bt-navy-2); }
.bt-text-link, .bt-arrow-link { display: inline-flex; align-items: center; gap: 14px; font-weight: 800; text-decoration: none; }
.bt-text-link { color: var(--bt-navy); }
.bt-text-link span, .bt-arrow-link span { color: var(--bt-gold); transition: transform .2s ease; }
.bt-text-link:hover span { transform: translateY(4px); }
.bt-arrow-link:hover span { transform: translateX(4px); }
.bt-hero__panel { align-self: end; margin-bottom: 88px; }
.bt-hero .bt-kicker--light { color: var(--bt-blue); }
.bt-hero .bt-kicker--light span { color: var(--bt-orange); }
.bt-hero__indicator { width: 290px; padding: 22px; border: 1px solid rgba(255,255,255,.2); color: var(--bt-white); background: rgba(16,33,95,.96); backdrop-filter: blur(8px); box-shadow: var(--bt-shadow); }
.bt-hero__indicator > span { color: var(--bt-gold); font-size: 1.3rem; }
.bt-hero__indicator strong { display: block; margin: 18px 0 3px; color: var(--bt-white); font-family: var(--bt-font-heading); font-size: 4.4rem; font-weight: 400; line-height: 1; }
.bt-hero__indicator small { display: block; color: rgba(255,255,255,.78); font-size: .78rem; line-height: 1.45; text-transform: uppercase; letter-spacing: .08em; }
.bt-sencamer-proof { display: flex; align-items: center; gap: 14px; }
.bt-sencamer-proof img { display: block; flex: 0 0 auto; width: 128px; height: auto; }
.bt-sencamer-proof--hero { width: 290px; margin-top: 10px; padding: 11px 12px; color: var(--bt-white); background: rgba(4,15,41,.94); box-shadow: var(--bt-shadow); }
.bt-sencamer-proof--hero img { width: 88px; }
.bt-sencamer-proof--hero span { font-size: .6rem; font-weight: 800; line-height: 1.42; text-transform: uppercase; letter-spacing: .025em; }
.bt-hero__rail { position: absolute; right: 4%; top: 18%; width: 3px; height: 64%; background: linear-gradient(var(--bt-gold), rgba(198,162,96,.08)); box-shadow: 15px 0 rgba(255,255,255,.12); }

.bt-intro { padding: 130px 0 120px; background: var(--bt-white); }
.bt-intro__grid, .bt-section-heading--split, .bt-certification__grid, .bt-cta__inner { display: grid; grid-template-columns: 1.35fr .65fr; gap: 9%; align-items: end; }
.bt-intro h2, .bt-section-heading h2, .bt-field h2, .bt-story h2, .bt-cta h2, .bt-certification h2 { margin: 0; font-family: var(--bt-font-heading); font-size: clamp(2.5rem, 3.8vw, 4rem); font-weight: 400; line-height: 1.06; letter-spacing: -.04em; text-wrap: balance; }
.bt-intro__copy > p, .bt-section-heading--split > p { margin: 0 0 24px; color: var(--bt-muted); font-size: 1.05rem; }
.bt-arrow-link { color: var(--bt-navy); font-size: .9rem; }
.bt-proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 90px; border-top: 1px solid #cfd3d8; border-bottom: 1px solid #cfd3d8; }
.bt-proof-grid article { position: relative; min-height: 220px; padding: 36px 38px; border-right: 1px solid #cfd3d8; }
.bt-proof-grid article:last-child { border-right: 0; }
.bt-proof-grid span, .bt-process__steps > li > span, .bt-contact-notes article > span { color: var(--bt-orange); font-size: .72rem; font-weight: 800; letter-spacing: .12em; }
.bt-proof-grid h3 { margin: 8px 0 6px; font-size: 1.25rem; }
.bt-proof-grid p { margin: 0; color: var(--bt-muted); }

.bt-services { padding: 110px 0; background: var(--bt-site-background); }
.bt-elevator-scroll, .bt-elevator-sticky { position: relative; }
.bt-services-stage { position: relative; }
.bt-section-heading { max-width: 900px; margin-bottom: 76px; }
.bt-section-heading--split { max-width: none; }
.bt-section-heading--split > p { align-self: end; }
.bt-elevator-layout { display: grid; grid-template-columns: 330px minmax(0, 1fr); gap: 8%; align-items: center; }
.bt-elevator { position: relative; display: grid; grid-template-columns: 1fr 72px; gap: 16px; padding: 20px; color: var(--bt-white); background: #0a1220; box-shadow: var(--bt-shadow); }
.bt-elevator__display { grid-column: 1 / -1; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 15px 18px; border: 1px solid #313947; color: var(--bt-gold); background: #05080c; font-family: var(--bt-font-technical); }
.bt-elevator__arrow { font-size: 1.4rem; animation: bt-blink 1.4s steps(1) infinite; }
.bt-elevator__number { font-size: 2.4rem; font-weight: 700; line-height: 1; }
.bt-elevator__status { color: #7dffab; font-size: .62rem; letter-spacing: .1em; }
.bt-elevator__shaft { position: relative; height: 490px; overflow: hidden; border: 1px solid #3a424e; background: repeating-linear-gradient(to bottom, #111a27 0 61px, #202a38 62px 64px); }
.bt-elevator__rail { position: absolute; top: 0; bottom: 0; width: 3px; background: #697482; box-shadow: 5px 0 #242e3b; }
.bt-elevator__rail--left { left: 26%; }
.bt-elevator__rail--right { right: 26%; }
.bt-elevator__car { position: absolute; left: 18%; right: 18%; top: 14px; height: 120px; display: flex; overflow: hidden; border: 4px solid #aab2ba; background: #d9dde0; box-shadow: 0 6px 14px rgba(0,0,0,.4); transition: top .18s linear; }
.bt-elevator__car span { width: 50%; border: 1px solid #8d959d; background: linear-gradient(90deg, #e8ebed, #aeb5bb); transition: transform .4s ease; }
.bt-service-card.is-active ~ * .bt-elevator__car span { transform: none; }
.bt-elevator__buttons { display: grid; align-content: start; gap: 8px; }
.bt-floor-button { width: 48px; height: 48px; padding: 0; border: 1px solid #5b6572; border-radius: 50%; color: #e4e8ec; background: #1a2532; font-family: var(--bt-font-technical); font-size: .75rem; cursor: pointer; transition: color .2s ease, border .2s ease, box-shadow .2s ease; }
.bt-floor-button:hover, .bt-floor-button:focus-visible, .bt-floor-button.is-active { color: var(--bt-navy); border-color: var(--bt-gold); box-shadow: inset 0 0 0 3px #1a2532, 0 0 0 2px var(--bt-gold); background: var(--bt-orange); }
.bt-service-list { min-width: 0; }
.bt-service-card { position: relative; isolation: isolate; display: grid; grid-template-columns: 110px minmax(0, 1fr); align-items: center; min-height: 420px; padding: 54px 42px; overflow: hidden; border-top: 1px solid var(--bt-steel); color: var(--bt-white); background: var(--bt-navy); opacity: 1; transition: opacity .38s ease, transform .38s ease, visibility .38s; }
.bt-service-card__image { position: absolute; z-index: -2; inset: 0; background-position: center; background-size: cover; filter: saturate(.72) contrast(1.05); }
.bt-service-card__image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(12,27,51,.95) 0%, rgba(12,27,51,.86) 53%, rgba(12,27,51,.5) 100%); }
.bt-service-card--image-1 .bt-service-card__image { background-image: var(--bt-image-service-1, url('../images/servicio-mantenimiento-preventivo.jpg')); background-position: center; }
.bt-service-card--image-2 .bt-service-card__image { background-image: var(--bt-image-service-2, url('../images/servicio-averias.jpg')); background-position: center; }
.bt-service-card--image-3 .bt-service-card__image { background-image: var(--bt-image-service-3, url('../images/servicio-reparacion.jpg')); background-position: center; }
.bt-service-card--image-4 .bt-service-card__image { background-image: var(--bt-image-service-4, url('../images/servicio-diagnostico.jpg')); background-position: center; }
.bt-service-card--image-5 .bt-service-card__image { background-image: var(--bt-image-service-5, url('../images/servicio-modernizacion.jpg')); background-position: center; }
.bt-service-card--image-6 .bt-service-card__image { background-image: var(--bt-image-service-6, url('../images/servicio-seguridad.jpg')); background-position: center; }
.bt-service-card:last-child { border-bottom: 1px solid var(--bt-steel); }
.bt-service-card.is-active { opacity: 1; transform: none; }
.bt-service-card__floor { align-self: start; padding-top: 8px; color: var(--bt-gold-light); font-family: var(--bt-font-technical); font-size: .9rem; font-weight: 700; }
.bt-service-card__eyebrow { margin: 0 0 12px; color: var(--bt-gold-light) !important; font-size: .72rem !important; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.bt-service-card h3 { max-width: 700px; margin: 0 0 25px; color: var(--bt-white); font-family: var(--bt-font-heading); font-size: clamp(2.25rem, 3.4vw, 3.6rem); font-weight: 400; line-height: 1.04; letter-spacing: -.035em; text-wrap: balance; }
.bt-service-card__content > p { max-width: 680px; margin: 0 0 30px; color: rgba(255,255,255,.88); font-size: 1.03rem; }
.bt-service-card ul { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; list-style: none; }
.bt-service-card li { padding: 8px 12px; border: 1px solid rgba(255,255,255,.34); color: var(--bt-white); background: rgba(12,27,51,.38); font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .045em; }
.bt-services-progress { display: flex; align-items: center; gap: 7px; width: calc(100% - 370px); margin: 20px 0 0 auto; color: var(--bt-navy); font: 700 .72rem/1 'Courier New', monospace; letter-spacing: .08em; }
.bt-services-progress i { position: relative; flex: 1; height: 2px; margin-left: 10px; overflow: hidden; background: #ccd2d8; }
.bt-services-progress b { position: absolute; inset: 0; background: var(--bt-orange); transform: scaleX(0); transform-origin: left center; transition: transform .12s linear; }
.bt-services-instruction--mobile, .bt-mobile-elevator-nav { display: none; }

.bt-field { position: relative; display: grid; grid-template-columns: 1fr 1fr; min-height: 680px; color: var(--bt-navy); background: var(--bt-white); }
.bt-field::before { display: none; }
.bt-field__photo { position: relative; overflow: hidden; }
.bt-field__photo::after { content: ''; position: absolute; z-index: 1; top: 0; right: 0; bottom: 0; width: 34%; pointer-events: none; background: linear-gradient(90deg, rgba(255,255,255,0), var(--bt-white)); }
.bt-field__photo img { width: 100%; height: 100%; object-fit: cover; }
.bt-field__copy { position: relative; z-index: 2; display: flex; flex-direction: column; justify-content: center; padding: clamp(56px, 7vw, 110px); }
.bt-field .bt-kicker--light { color: var(--bt-blue); }
.bt-field .bt-kicker--light span { color: var(--bt-orange); }
.bt-field h2 { max-width: 680px; font-size: clamp(2.25rem, 3.5vw, 3.8rem); line-height: 1.08; }
.bt-field__copy p { max-width: 650px; margin: 30px 0; color: var(--bt-muted); }
.bt-brand-list { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; width: min(820px, 100%); margin: 46px 0 20px; }
.bt-brand-list > span { position: relative; grid-column: span 2; min-width: 0; height: 108px; display: grid; place-items: center; overflow: hidden; padding: 18px 24px; border: 1px solid rgba(16,33,95,.16); background: var(--bt-white); box-shadow: 0 14px 34px rgba(16,33,95,.08); }
.bt-brand-list > span:nth-child(4) { grid-column: 2 / span 2; }
.bt-brand-list > span:nth-child(5) { grid-column: 4 / span 2; }
.bt-brand-list > span::after { content: ''; position: absolute; right: 24px; bottom: 0; left: 24px; height: 3px; background: var(--bt-gold); }
.bt-brand-list > span > img { display: block; width: 100%; height: 64px; object-fit: contain; }
.bt-field__copy small { max-width: 620px; color: #7a8490; font-size: .72rem; line-height: 1.5; }

.bt-story { padding: 130px 0; background: var(--bt-site-background); }
.bt-story__grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 10%; align-items: center; }
.bt-story__photo { position: relative; max-width: 500px; }
.bt-story__photo::before { content: ''; position: absolute; z-index: 1; inset: 24px -24px -24px 24px; border: 1px solid var(--bt-gold); pointer-events: none; }
.bt-story__photo img { position: relative; z-index: 2; display: block; width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: center; }
.bt-story__badge { position: absolute; z-index: 3; right: -44px; bottom: 46px; width: 270px; padding: 16px; color: var(--bt-white); background: rgba(4,15,41,.96); box-shadow: var(--bt-shadow); }
.bt-story__badge img { display: block; width: 150px; height: auto; margin-bottom: 10px; }
.bt-story__badge span { display: block; font-size: .64rem; font-weight: 800; line-height: 1.45; text-transform: uppercase; letter-spacing: .035em; }
.bt-story__copy p:not(.bt-kicker) { max-width: 650px; margin: 28px 0; color: var(--bt-muted); }
.bt-story__copy .bt-button { margin-top: 12px; }

.bt-cta { padding: 110px 0; color: var(--bt-navy); background: var(--bt-gold-light); border-block: 1px solid rgba(7,25,66,.1); }
.bt-cta .bt-kicker--light { color: var(--bt-blue); }
.bt-cta .bt-kicker--light span { color: var(--bt-orange); }
.bt-cta h2 { max-width: 750px; }
.bt-cta__inner > div:last-child p { margin: 0 0 30px; color: #4d5968; }

.bt-footer { padding: 82px 0 24px; color: rgba(255,255,255,.76); background: var(--bt-navy-2); }
.bt-footer__grid { display: grid; grid-template-columns: 1.5fr .6fr 1fr; gap: 8%; padding-bottom: 62px; }
.bt-footer__logo-link { display: grid; place-items: center; width: 230px; max-width: 100%; min-height: 174px; margin: 0 0 22px; padding: 14px 18px; background: var(--bt-white); text-decoration: none; }
.bt-footer__logo { display: block; width: 190px; max-width: 100%; height: auto; }
.bt-footer__brand p { max-width: 330px; margin: 0; color: var(--bt-gold-light); font-family: var(--bt-font-heading); font-size: 1.35rem; line-height: 1.35; }
.bt-footer__label { margin: 0 0 18px; color: var(--bt-white); font-size: .72rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.bt-footer__links { padding: 0; margin: 0; list-style: none; }
.bt-footer__links li + li { margin-top: 10px; }
.bt-footer__links a { text-decoration: none; }
.bt-footer__links a:hover { color: var(--bt-gold); }
.bt-footer__contact-list { display: grid; gap: 13px; }
.bt-footer__contact-list li + li { margin-top: 0; }
.bt-footer__contact-list a, .bt-footer__contact-item { display: grid; grid-template-columns: 20px minmax(0, 1fr); gap: 11px; align-items: start; color: rgba(255,255,255,.76); font-size: .86rem; line-height: 1.5; }
.bt-footer__contact-list svg { width: 19px; height: 19px; margin-top: 1px; overflow: visible; fill: none; stroke: var(--bt-gold); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.bt-footer__contact-list a:hover svg { stroke: var(--bt-white); }
.bt-footer__contact-list span { min-width: 0; overflow-wrap: anywhere; }
.bt-footer__phone-links { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.bt-footer__phone-links a { display: inline; color: inherit; font-size: inherit; line-height: inherit; }
.bt-footer__phone-links a:hover { color: var(--bt-gold); }
.bt-footer__phone-separator { color: rgba(255,255,255,.4); }
.bt-footer__lower { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(360px, .8fr); align-items: stretch; gap: 54px; margin-top: 12px; padding-top: 34px; border-top: 1px solid rgba(255,255,255,.13); }
.bt-footer__map { position: relative; width: 100%; min-height: 220px; overflow: hidden; border: 1px solid rgba(255,255,255,.16); background: rgba(255,255,255,.06); }
.bt-footer__map iframe { display: block; width: 100%; height: 100%; min-height: 220px; border: 0; pointer-events: none; filter: saturate(.82) contrast(.96); }
.bt-footer__map-link { position: absolute; z-index: 2; inset: 0; display: flex; align-items: flex-start; justify-content: flex-end; padding: 14px; color: var(--bt-white); text-decoration: none; cursor: pointer; }
.bt-footer__map-link > span { padding: 8px 11px; color: var(--bt-white); background: rgba(10,22,68,.9); box-shadow: 0 8px 22px rgba(7,20,60,.22); font-size: .72rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; transition: background-color .2s ease, color .2s ease; }
.bt-footer__map-link:hover > span, .bt-footer__map-link:focus-visible > span { color: var(--bt-navy); background: var(--bt-gold); }
.bt-footer__certification { display: grid; grid-template-columns: minmax(180px, 236px) minmax(0, 1fr); align-items: center; gap: 30px; min-height: 220px; }
.bt-footer__certification img { width: 100%; max-height: 66px; object-fit: contain; object-position: left center; }
.bt-footer__certification p { max-width: 520px; margin: 0; color: rgba(255,255,255,.58); font-size: .72rem; font-weight: 700; line-height: 1.6; letter-spacing: .045em; text-transform: uppercase; }
.bt-footer__bottom { display: flex; justify-content: space-between; gap: 30px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.13); color: rgba(255,255,255,.42); font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; }
.bt-footer__bottom p { margin: 0; }

.bt-whatsapp-float { position: fixed; z-index: 1000; right: 24px; bottom: 24px; display: grid; place-items: center; width: 60px; height: 60px; border: 2px solid rgba(255,255,255,.9); border-radius: 50%; color: var(--bt-white) !important; background: #25d366; box-shadow: 0 12px 30px rgba(7,25,66,.28); text-decoration: none; transition: transform .2s ease, background-color .2s ease, box-shadow .2s ease; }
.bt-whatsapp-float svg { width: 34px; height: 34px; fill: currentColor; }
.bt-whatsapp-float:hover, .bt-whatsapp-float:focus-visible { color: var(--bt-white) !important; background: #128c4a; box-shadow: 0 16px 36px rgba(7,25,66,.36); transform: translateY(-3px) scale(1.04); }
.bt-whatsapp-float:focus-visible { outline: 3px solid var(--bt-gold); outline-offset: 3px; }

.bt-page-hero { position: relative; padding: 210px 0 115px; color: var(--bt-navy); background: var(--bt-site-background); }
.bt-page-hero .bt-kicker--light { color: var(--bt-blue); }
.bt-page-hero .bt-kicker--light span { color: var(--bt-orange); }
.bt-page-hero::after { content: ''; position: absolute; right: 4%; top: 0; width: 22%; height: 100%; border-inline: 1px solid rgba(7,25,66,.07); background: repeating-linear-gradient(to bottom, transparent 0 89px, rgba(7,25,66,.07) 90px 91px); }
.bt-page-hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.45fr .55fr; gap: 9%; align-items: end; }
.bt-page-hero h1 { max-width: 880px; font-size: clamp(3.2rem, 4.8vw, 5.2rem); }
.bt-page-hero__inner > p { margin: 0; color: var(--bt-muted); }
.bt-page-hero--services { min-height: 520px; overflow: hidden; padding: 0; }
.bt-page-hero--services::after { display: none; }
.bt-page-hero--services .bt-page-hero__inner { min-height: 520px; display: flex; align-items: center; padding-top: calc(var(--bt-header) + 38px); padding-bottom: 54px; }
.bt-page-hero__copy { position: relative; z-index: 2; }
.bt-page-hero--services .bt-page-hero__copy { width: min(55%, 760px); }
.bt-page-hero__copy > p:last-child { max-width: 700px; margin: 32px 0 0; color: var(--bt-muted); font-size: 1.06rem; line-height: 1.7; }
.bt-page-hero__visual { position: absolute; z-index: 0; inset: 0 0 0 auto; width: 56%; overflow: hidden; }
.bt-page-hero__visual::before { content: ''; position: absolute; z-index: 1; inset: 0; background: linear-gradient(90deg, var(--bt-site-background) 0%, rgba(242,242,242,.88) 14%, rgba(242,242,242,.26) 54%, transparent 74%); pointer-events: none; }
.bt-page-hero__visual img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center bottom; filter: saturate(.86) contrast(1.02); }
.bt-page-hero + .bt-services { padding-top: 110px; }
.bt-services-grid-section { padding: 120px 0; background: var(--bt-white); }
.bt-services-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.bt-service-box { min-width: 0; overflow: hidden; border: 1px solid #d5dae0; background: var(--bt-paper); }
.bt-service-box__image { aspect-ratio: 16 / 7; background-position: center; background-size: cover; }
.bt-service-box--1 .bt-service-box__image { background-image: var(--bt-image-service-1); }
.bt-service-box--2 .bt-service-box__image { background-image: var(--bt-image-service-2); }
.bt-service-box--3 .bt-service-box__image { background-image: var(--bt-image-service-3); }
.bt-service-box--4 .bt-service-box__image { background-image: var(--bt-image-service-4); }
.bt-service-box--5 .bt-service-box__image { background-image: var(--bt-image-service-5); }
.bt-service-box--6 .bt-service-box__image { background-image: var(--bt-image-service-6); }
.bt-service-box__body { position: relative; padding: 38px; }
.bt-service-box__eyebrow { margin: 0 0 10px; color: var(--bt-blue); font-size: .7rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.bt-service-box h3 { margin: 0 0 16px; color: var(--bt-navy); font-family: var(--bt-font-heading); font-size: clamp(2rem, 3.2vw, 3.2rem); font-weight: 400; line-height: 1.05; }
.bt-service-box__body > p:not(.bt-service-box__eyebrow) { color: var(--bt-muted); }
.bt-service-box ul { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 24px 0 0; list-style: none; }
.bt-service-box li { padding: 7px 10px; border: 1px solid #ccd2d8; color: var(--bt-navy); background: var(--bt-white); font-size: .72rem; font-weight: 700; }
.bt-process { padding: 120px 0; background: var(--bt-paper); }
.bt-process__steps { display: grid; grid-template-columns: repeat(4, 1fr); padding: 0; margin: 72px 0 0; border-top: 1px solid #cfd3d8; list-style: none; }
.bt-process__steps li { position: relative; padding: 35px 28px 20px 0; }
.bt-process__steps li::before { content: ''; position: absolute; top: -7px; left: 0; width: 13px; height: 13px; border: 3px solid var(--bt-paper); border-radius: 50%; background: var(--bt-orange); box-shadow: 0 0 0 3px var(--bt-paper); }
.bt-process__steps h3 { margin: 36px 0 10px; font-size: 1.1rem; }
.bt-process__steps p { margin: 0; color: var(--bt-muted); }

.bt-about-hero { display: grid; grid-template-columns: 46% 54%; min-height: 100svh; color: var(--bt-navy); background: var(--bt-site-background); }
.bt-about-hero .bt-kicker--light { color: var(--bt-blue); }
.bt-about-hero .bt-kicker--light span { color: var(--bt-orange); }
.bt-about-hero__image { position: relative; min-height: 100svh; overflow: hidden; }
.bt-about-hero__image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 54%, var(--bt-site-background) 100%); pointer-events: none; }
.bt-about-hero__image img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; filter: saturate(.85); }
.bt-about-hero__copy { display: flex; flex-direction: column; justify-content: center; padding: calc(var(--bt-header) + 50px) clamp(42px, 6vw, 100px) 54px; }
.bt-about-hero h1 { max-width: 760px; font-size: clamp(3.2rem, 4.8vw, 5.2rem); }
.bt-about-hero__copy > p:last-child { max-width: 630px; margin: 32px 0 0; color: var(--bt-muted); }
.bt-timeline { padding: 120px 0; background: var(--bt-paper); }
.bt-timeline__line { display: grid; grid-template-columns: repeat(3, 1fr); padding: 0; margin: 78px 0 0; border-top: 1px solid #c9cdd2; list-style: none; }
.bt-timeline__line li { position: relative; padding: 40px 44px 0 0; }
.bt-timeline__line li::before { content: ''; position: absolute; top: -8px; left: 0; width: 14px; height: 14px; border-radius: 50%; background: var(--bt-orange); box-shadow: 0 0 0 5px var(--bt-paper); }
.bt-timeline__line strong { display: block; margin-bottom: 12px; color: var(--bt-navy); font-family: var(--bt-font-heading); font-size: 3.8rem; font-weight: 400; line-height: 1; }
.bt-timeline__line span { display: block; max-width: 260px; color: var(--bt-muted); }
.bt-purpose { padding: 120px 0; color: var(--bt-navy); background: var(--bt-white); }
.bt-purpose .bt-kicker--light { color: var(--bt-blue); }
.bt-purpose .bt-kicker--light span { color: var(--bt-orange); }
.bt-purpose__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.bt-purpose__grid article { min-height: 220px; padding: 36px 40px; border: 1px solid #d6dbe0; background: var(--bt-site-background); }
.bt-purpose__number { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border: 1px solid var(--bt-gold); color: var(--bt-gold); font-family: var(--bt-font-heading); }
.bt-purpose__grid h3 { margin: 6px 0 14px; color: var(--bt-navy); font-family: var(--bt-font-heading); font-size: 2.1rem; font-weight: 400; }
.bt-purpose__grid p { max-width: 580px; margin: 0; color: var(--bt-muted); }
.bt-certification { padding: 110px 0; background: var(--bt-paper); }
.bt-certification__grid { align-items: center; }
.bt-certification h2 { max-width: 650px; font-size: clamp(2.5rem, 3.8vw, 4rem); }
.bt-certification__lead { max-width: 620px; margin: 28px 0 0; color: #555849; font-size: 1.05rem; line-height: 1.7; }
.bt-certification__grid > div:last-child .bt-button { margin-top: 28px; }
.bt-sencamer-proof--section { max-width: 620px; margin: 0 0 26px; padding: 24px; border: 1px solid #d4d8dd; background: var(--bt-white); box-shadow: 0 12px 34px rgba(12,27,51,.08); }
.bt-sencamer-proof--section img { width: 180px; }
.bt-certification__grid .bt-sencamer-proof--section p { margin: 0; color: var(--bt-navy); font-size: .9rem; font-weight: 800; line-height: 1.55; }
.bt-certification .bt-button--navy, .bt-story .bt-button--navy { color: var(--bt-white) !important; }
.bt-certification .bt-button--navy span, .bt-story .bt-button--navy span { color: var(--bt-gold-light); }

.bt-contact { padding: 190px 0 115px; color: var(--bt-navy); background: var(--bt-site-background); }
.bt-contact .bt-kicker--light { color: var(--bt-blue); }
.bt-contact .bt-kicker--light span { color: var(--bt-orange); }
.bt-contact__grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 8%; align-items: start; }
.bt-contact h1 { max-width: 650px; font-size: clamp(3.2rem, 4.8vw, 5.2rem); }
.bt-contact__intro > p:not(.bt-kicker) { max-width: 600px; margin: 30px 0 44px; color: var(--bt-muted); }
.bt-contact__channels { border-top: 1px solid rgba(7,25,66,.16); }
.bt-contact__channels a { display: grid; grid-template-columns: 105px 1fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid rgba(7,25,66,.16); text-decoration: none; }
.bt-contact__channels span { color: var(--bt-gold); font-size: .71rem; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; }
.bt-contact__channels strong { font-weight: 500; overflow-wrap: anywhere; }
.bt-contact-guidance { display: grid; gap: 18px; margin-top: 34px; }
.bt-contact-guidance article { padding: 22px 24px; border-left: 2px solid var(--bt-gold); background: var(--bt-white); }
.bt-contact-guidance article > span { color: var(--bt-orange); font: 700 .7rem/1 var(--bt-font-technical); }
.bt-contact-guidance h2 { margin: 9px 0 4px; color: var(--bt-navy); font-family: var(--bt-font-heading); font-size: 1.45rem; font-weight: 400; }
.bt-contact-guidance p { margin: 0; color: var(--bt-muted); font-size: .88rem; }
.bt-form-panel { padding: clamp(28px, 4vw, 54px); color: var(--bt-ink); background: var(--bt-white); box-shadow: var(--bt-shadow); }
.bt-form-placeholder__notice { display: grid; gap: 2px; margin-bottom: 28px; padding: 15px 18px; border-left: 3px solid var(--bt-orange); color: var(--bt-navy); background: var(--bt-paper); }
.bt-form-placeholder__notice span { color: var(--bt-muted); font-size: .78rem; }
.bt-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.bt-form-placeholder label { display: grid; gap: 7px; margin-bottom: 16px; color: var(--bt-navy); font-size: .78rem; font-weight: 800; letter-spacing: .025em; }
.bt-form-placeholder input, .bt-form-placeholder select, .bt-form-placeholder textarea { width: 100%; min-height: 47px; padding: 10px 12px; border: 1px solid #cfd4da; border-radius: 0; color: #777; background: #fbfbfa; opacity: 1; }
.bt-form-placeholder textarea { min-height: 110px; resize: none; }
.bt-form-placeholder button { width: 100%; min-height: 52px; border: 0; color: rgba(255,255,255,.7); background: #768090; font-size: .78rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; opacity: 1; cursor: not-allowed; }
.bt-form-live input, .bt-form-live select, .bt-form-live textarea { max-width: 100%; }
.bt-form-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-bottom: 34px; padding: 6px; background: var(--bt-paper); }
.bt-form-tab { min-height: 48px; padding: 10px 14px; border: 0; color: var(--bt-muted); background: transparent; font-size: .78rem; font-weight: 800; cursor: pointer; }
.bt-form-tab[aria-selected='true'] { color: var(--bt-white); background: var(--bt-navy); }
.bt-form-tab-panel[hidden] { display: none !important; }
.bt-form-live .ff_submit_btn_wrapper { clear: both; width: 100% !important; margin-top: 24px !important; }
.bt-form-live .ff-btn-submit { position: static !important; float: none !important; display: inline-flex !important; width: auto !important; min-width: 210px; justify-content: center; }
.bt-form-live .bt-form-email-row { display: block !important; width: 100% !important; }
.bt-form-live .bt-form-email-row > .ff-t-cell, .bt-form-live .bt-form-email-cell { width: 100% !important; max-width: none !important; margin: 0 !important; padding-inline: 0 !important; flex: 0 0 100% !important; }
.bt-required-marker { color: #d4382a; }
.bt-form-live .ff-btn-submit { color: var(--bt-navy) !important; background: var(--bt-gold) !important; border-color: var(--bt-gold) !important; font-weight: 800 !important; }
.bt-form-live .ff-btn-submit:hover, .bt-form-live .ff-btn-submit:focus-visible { color: var(--bt-white) !important; background: var(--bt-navy) !important; border-color: var(--bt-navy) !important; }

@media (min-width: 1025px) {
  .bt-contact__intro { position: sticky; top: calc(var(--bt-header) + 28px); align-self: start; }
}

.bt-contact-notes { padding: 90px 0; background: var(--bt-paper); }
.bt-contact-notes__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: #ccd1d6; }
.bt-contact-notes article { padding: 46px; background: var(--bt-paper); }
.bt-contact-notes h2 { margin: 30px 0 10px; font-family: var(--bt-font-heading); font-size: 2rem; font-weight: 400; }
.bt-contact-notes p { margin: 0; color: var(--bt-muted); }

.bt-standard-page { min-height: 70vh; padding: 170px 0 100px; background: var(--bt-paper); }
.bt-prose { max-width: 850px; }
.bt-prose h1 { margin: 0 0 40px; color: var(--bt-navy); font-family: var(--bt-font-heading); font-size: clamp(3rem, 4.8vw, 5.2rem); font-weight: 400; line-height: 1.05; }
.bt-prose .entry-content { font-size: 1.05rem; }
.bt-prose .entry-content > * { max-width: 760px; }

.bt-js [data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .65s ease, transform .65s ease; }
.bt-js [data-reveal].is-visible { opacity: 1; transform: none; }
@keyframes bt-blink { 0%, 74% { opacity: 1; } 75%, 100% { opacity: .28; } }

@media (min-width: 921px) {
  /* Sticky cannot work through the overflow:hidden ancestor on the WordPress page. */
  .bt-js .bt-main { overflow: visible; }
  .bt-js .bt-services { padding: 0; }
  .bt-js .bt-elevator-scroll { height: 620vh; }
  .bt-js .bt-elevator-sticky { position: sticky; top: var(--wp-admin--admin-bar--height, 0px); height: calc(100vh - var(--wp-admin--admin-bar--height, 0px)); min-height: min(690px, calc(100vh - var(--wp-admin--admin-bar--height, 0px))); display: flex; align-items: center; overflow: hidden; padding: 24px 0; }
  .bt-js .bt-services-stage { display: flex; flex-direction: column; justify-content: center; height: 100%; }
  .bt-js .bt-services-stage > .bt-section-heading { margin-bottom: 24px; }
  .bt-js .bt-services-stage > .bt-section-heading h2 { font-size: clamp(2.5rem, 3.8vw, 4rem); }
  .bt-js .bt-services-stage > .bt-section-heading > p { max-width: 420px; font-size: .94rem; }
  .bt-js .bt-services-stage .bt-kicker { margin-bottom: 12px; }
  .bt-js .bt-elevator__shaft { height: min(42vh, 390px); min-height: 320px; }
  .bt-js .bt-service-list { position: relative; height: min(48vh, 440px); min-height: 340px; overflow: hidden; }
  .bt-js .bt-service-card { position: absolute; inset: 0; grid-template-columns: 82px minmax(0, 1fr); min-height: 0; padding: 30px 36px; opacity: 0; visibility: hidden; transform: translateY(24px); pointer-events: none; }
  .bt-js .bt-service-card.is-active { z-index: 1; opacity: 1; visibility: visible; transform: none; pointer-events: auto; }
  .bt-js .bt-service-card__floor { padding-top: 4px; }
  .bt-js .bt-service-card h3 { margin-bottom: 16px; font-size: clamp(2.2rem, 3.1vw, 3.45rem); line-height: 1; }
  .bt-js .bt-service-card__content > p { margin-bottom: 20px; font-size: .94rem; line-height: 1.55; }
  .bt-js .bt-service-card li { padding: 6px 9px; font-size: .68rem; }
}

@media (min-width: 921px) and (max-height: 850px) {
  .bt-js .bt-elevator-sticky { padding: 14px 0; }
  .bt-js .bt-services-stage > .bt-section-heading { margin-bottom: 16px; }
  .bt-js .bt-services-stage > .bt-section-heading h2 { font-size: clamp(2.2rem, 3.5vw, 3.55rem); line-height: .98; }
  .bt-js .bt-services-stage > .bt-section-heading > p { font-size: .88rem; line-height: 1.5; }
  .bt-js .bt-elevator__shaft { height: min(43vh, 350px); min-height: 285px; }
  .bt-js .bt-service-list { height: min(49vh, 390px); min-height: 320px; }
  .bt-js .bt-service-card { grid-template-columns: 70px minmax(0, 1fr); padding: 24px 30px; }
  .bt-js .bt-service-card h3 { font-size: clamp(2rem, 3vw, 3.25rem); }
  .bt-js .bt-service-card__content > p { margin-bottom: 16px; font-size: .88rem; }
  .bt-js .bt-service-card li { padding: 5px 8px; font-size: .62rem; }
}

@media (min-width: 801px) {
  .bt-sencamer-proof--hero { display: block; width: 290px; padding: 18px; }
  .bt-sencamer-proof--hero img { width: 100%; max-height: 78px; object-fit: contain; object-position: left center; }
  .bt-sencamer-proof--hero span { display: block; margin-top: 12px; color: rgba(255,255,255,.62); font-size: .58rem; font-weight: 600; line-height: 1.55; letter-spacing: .055em; }
  .bt-about-hero { min-height: clamp(520px, 62svh, 620px); }
  .bt-about-hero__image { min-height: clamp(520px, 62svh, 620px); height: clamp(520px, 62svh, 620px); }
  .bt-about-hero__image img { object-position: center 30%; }
  .bt-about-hero__copy { padding-top: calc(var(--bt-header) + 32px); padding-bottom: 42px; }
  .bt-story { padding: 72px 0; }
  .bt-story__photo { align-self: center; }
  .bt-story__photo img { height: auto; max-height: none; aspect-ratio: 3 / 4; object-position: center; }
  .bt-story h2 { font-size: clamp(2.5rem, 3.7vw, 3.9rem); }
  .bt-story__copy p:not(.bt-kicker) { margin: 18px 0; }
}

@media (max-width: 1040px) {
  .bt-brand__name { display: none; }
  .bt-header .bt-brand { padding-right: 0; }
  :root { --bt-header: 76px; }
  .bt-nav-toggle { display: inline-flex; align-items: center; cursor: pointer; }
  .bt-nav { position: fixed; inset: var(--bt-header) 0 0; display: grid; align-content: start; gap: 30px; padding: 42px 24px; color: var(--bt-white); background: var(--bt-navy); transform: translateX(100%); visibility: hidden; transition: transform .28s ease, visibility .28s; }
  .bt-nav.is-open { transform: none; visibility: visible; }
  .bt-menu { display: grid; gap: 0; }
.bt-menu a { width: 100%; padding: 17px 0; border-bottom: 1px solid rgba(255,255,255,.14); font-family: var(--bt-font-heading); font-size: 1.8rem; font-weight: 400; letter-spacing: -.02em; }
  .bt-menu a::after { display: none; }
  .bt-nav__cta { justify-self: start; }
  .bt-nav-toggle[aria-expanded='true'] .bt-nav-toggle__icon i:first-child { transform: translateY(4px) rotate(45deg); }
  .bt-nav-toggle[aria-expanded='true'] .bt-nav-toggle__icon i:last-child { transform: translateY(-4px) rotate(-45deg); }
  .bt-hero__inner { grid-template-columns: 1fr .34fr; gap: 5%; }
  .bt-hero h1 { font-size: clamp(3.2rem, 4.8vw, 5.2rem); }
  .bt-elevator-layout { grid-template-columns: 280px minmax(0,1fr); gap: 5%; }
  .bt-elevator__shaft { height: 420px; }
  .bt-field__copy { padding: 70px 48px; }
  .bt-story__grid { gap: 7%; }
  .bt-page-hero__inner, .bt-intro__grid, .bt-section-heading--split, .bt-certification__grid, .bt-cta__inner { gap: 5%; }
}

@media (max-width: 920px) {
  .bt-services { padding: 82px 0; }
  .bt-elevator-scroll, .bt-elevator-sticky { height: auto; min-height: 0; overflow: visible; }
  .bt-elevator-layout { display: block; }
  .bt-elevator { position: relative; top: auto; display: flex; align-items: center; gap: 12px; overflow-x: auto; padding: 12px; margin-bottom: 28px; box-shadow: none; }
  .bt-elevator__display { position: sticky; left: 0; z-index: 2; flex: 0 0 105px; display: grid; grid-template-columns: auto 1fr; gap: 6px; padding: 9px; }
  .bt-elevator__number { font-size: 1.6rem; }
  .bt-elevator__status { grid-column: 1 / -1; font-size: .55rem; }
  .bt-elevator__shaft { display: none; }
  .bt-elevator__buttons { display: flex; gap: 8px; }
  .bt-floor-button { flex: 0 0 42px; width: 42px; height: 42px; }
  .bt-services-instruction--desktop { display: none; }
  .bt-services-instruction--mobile { display: block; }
  .bt-service-list { position: relative; height: auto; min-height: 420px; overflow: hidden; outline: none; touch-action: pan-y; }
  .bt-service-card, .bt-js .bt-service-card { position: absolute; inset: 0; grid-template-columns: 70px minmax(0,1fr); min-height: 420px; padding: 46px 0; opacity: 0; visibility: hidden; transform: translateX(28px) !important; pointer-events: none; }
  .bt-service-card.is-active, .bt-js .bt-service-card.is-active { position: relative; inset: auto; z-index: 1; opacity: 1; visibility: visible; transform: none !important; pointer-events: auto; }
  .bt-service-card h3 { font-size: clamp(2.1rem, 7.5vw, 3.4rem); }
  .bt-services-progress { display: none; }
  .bt-mobile-elevator-nav { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding-top: 18px; color: var(--bt-navy); font: 700 .78rem/1 'Courier New', monospace; letter-spacing: .08em; }
  .bt-mobile-elevator-nav__button { width: 48px; height: 48px; padding: 0; border: 1px solid var(--bt-steel); border-radius: 50%; color: var(--bt-white); background: var(--bt-navy); font-size: 1.15rem; cursor: pointer; transition: background .2s ease, opacity .2s ease, transform .2s ease; }
  .bt-mobile-elevator-nav__button:hover, .bt-mobile-elevator-nav__button:focus-visible { color: var(--bt-navy); background: var(--bt-orange); transform: translateY(-1px); }
  .bt-mobile-elevator-nav__button:disabled { opacity: .3; cursor: default; transform: none; }
}

@media (max-width: 800px) {
  .bt-shell { width: min(calc(100% - 32px), var(--bt-shell)); }
  .bt-brand__fallback, .bt-brand .custom-logo-link { width: 160px; }
  .bt-brand__fallback img, .bt-brand .custom-logo { width: 160px; height: auto; max-height: 62px; }
  .bt-hero { min-height: 780px; }
  .bt-hero::before { inset: 0; background: linear-gradient(180deg, rgba(7,25,66,.96) 0%, rgba(7,25,66,.8) 65%, rgba(7,25,66,.94) 100%); }
  .bt-hero__image { inset: 0; opacity: .55; }
  .bt-hero__inner { min-height: 780px; grid-template-columns: 1fr; align-content: center; gap: 45px; padding-top: 115px; }
  .bt-hero h1 { font-size: clamp(3.3rem, 13vw, 5.4rem); }
  .bt-hero__lead { font-size: 1rem; }
  .bt-hero__panel { align-self: auto; margin: 0; }
  .bt-hero__indicator { display: grid; grid-template-columns: auto auto 1fr; align-items: center; gap: 14px; width: 100%; padding: 13px 16px; }
  .bt-hero__indicator strong { margin: 0; font-size: 2.6rem; }
  .bt-sencamer-proof--hero { width: 100%; }
  .bt-hero__rail { display: none; }
  .bt-intro, .bt-services, .bt-story, .bt-timeline, .bt-purpose, .bt-certification, .bt-process { padding: 82px 0; }
  .bt-intro__grid, .bt-section-heading--split, .bt-certification__grid, .bt-cta__inner, .bt-page-hero__inner { grid-template-columns: 1fr; gap: 30px; }
  .bt-intro h2, .bt-section-heading h2, .bt-field h2, .bt-story h2, .bt-cta h2, .bt-certification h2 { font-size: clamp(2.25rem, 8.5vw, 3.4rem); }
  .bt-proof-grid { grid-template-columns: 1fr; margin-top: 54px; }
  .bt-proof-grid article { min-height: auto; border-right: 0; border-bottom: 1px solid #cfd3d8; }
  .bt-proof-grid article:last-child { border-bottom: 0; }
  .bt-proof-grid h3 { margin-top: 26px; }
  .bt-section-heading { margin-bottom: 48px; }
  .bt-service-card, .bt-js .bt-service-card { grid-template-columns: 54px minmax(0,1fr); }
  .bt-service-card h3 { font-size: clamp(2.1rem, 9vw, 3.4rem); }
  .bt-field { grid-template-columns: 1fr; }
  .bt-field__photo { height: 520px; }
  .bt-field__copy { padding: 76px 24px; }
  .bt-story__grid { grid-template-columns: 1fr; gap: 80px; }
  .bt-story__photo { max-width: calc(100% - 24px); }
  .bt-story__badge { right: -18px; }
  .bt-cta { padding: 82px 0; }
  .bt-footer__grid { grid-template-columns: 1fr 1fr; }
  .bt-footer__brand { grid-column: 1 / -1; }
  .bt-footer__bottom { display: grid; }
  .bt-footer__lower { grid-template-columns: 1fr; gap: 28px; }
  .bt-footer__certification { grid-template-columns: 1fr; gap: 20px; }
  .bt-footer__certification img { width: min(236px, 100%); max-height: 66px; }
  .bt-page-hero { padding: 160px 0 82px; }
  .bt-page-hero h1 { font-size: clamp(2.7rem, 10vw, 4.3rem); }
  .bt-process__steps, .bt-timeline__line { grid-template-columns: 1fr; border-top: 0; border-left: 1px solid #cfd3d8; }
  .bt-process__steps li, .bt-timeline__line li { padding: 0 0 48px 36px; }
  .bt-process__steps li::before, .bt-timeline__line li::before { top: 8px; left: -7px; }
  .bt-process__steps h3 { margin-top: 20px; }
  .bt-about-hero { grid-template-columns: 1fr; }
  .bt-about-hero__image { min-height: 510px; }
  .bt-about-hero__copy { padding: 70px 24px 82px; }
  .bt-about-hero h1 { font-size: clamp(2.7rem, 10vw, 4.3rem); }
  .bt-purpose__grid { grid-template-columns: 1fr; }
  .bt-contact { padding: 145px 0 82px; }
  .bt-contact__grid { grid-template-columns: 1fr; gap: 60px; }
  .bt-contact h1 { font-size: clamp(3.2rem, 12vw, 5rem); }
}

/* Responsive review 1.2.5. These rules intentionally override earlier layout defaults. */
@media (max-width: 920px) {
  html, body.bt-site, .bt-main { max-width: 100%; overflow-x: clip; }
  .bt-elevator { display: grid; grid-template-columns: 1fr; gap: 12px; overflow: hidden; padding: 12px; }
  .bt-elevator__display { position: static; width: 100%; grid-template-columns: auto auto 1fr; padding: 10px 12px; }
  .bt-elevator__status { grid-column: auto; justify-self: end; }
  .bt-elevator__buttons { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 5px; width: 100%; }
  .bt-floor-button { justify-self: center; width: clamp(31px, 8vw, 38px); height: clamp(31px, 8vw, 38px); font-size: clamp(.58rem, 2.4vw, .7rem); }
  .bt-service-list { width: 100%; min-width: 0; min-height: 0; }
  .bt-service-card, .bt-js .bt-service-card { width: 100%; max-width: 100%; grid-template-columns: 1fr; min-height: 0; padding: 28px 20px; }
  .bt-service-card__floor { margin: 0 0 12px; padding: 0; }
  .bt-service-card__content { min-width: 0; width: 100%; }
  .bt-service-card h3 { max-width: 100%; margin-bottom: 16px; font-size: clamp(1.85rem, 8.5vw, 3rem); overflow-wrap: anywhere; }
  .bt-service-card__content > p { max-width: 100%; margin-bottom: 22px; font-size: .94rem; overflow-wrap: anywhere; }
  .bt-service-card ul { width: 100%; }
  .bt-service-card li { max-width: 100%; padding: 7px 9px; font-size: .67rem; overflow-wrap: anywhere; }
  .bt-service-card__image::after { background: linear-gradient(180deg, rgba(12,27,51,.88) 0%, rgba(12,27,51,.78) 52%, rgba(12,27,51,.92) 100%); }
}

@media (max-width: 800px) {
  .bt-hero { min-height: 100svh; color: var(--bt-white); background: var(--bt-navy); }
  .bt-hero::before { background: linear-gradient(180deg, rgba(4,15,41,.82) 0%, rgba(4,15,41,.9) 58%, rgba(4,15,41,.97) 100%); }
  .bt-hero__image { filter: saturate(.62) contrast(1.08); opacity: .68; }
  .bt-hero__inner { min-height: 100svh; padding-top: calc(var(--bt-header) + 36px); padding-bottom: 38px; }
  .bt-page-hero--services { min-height: 540px; padding: 0; }
  .bt-page-hero--services .bt-page-hero__inner { min-height: 540px; display: flex; align-items: flex-start; padding-top: calc(var(--bt-header) + 46px); padding-bottom: 200px; }
  .bt-page-hero--services .bt-page-hero__copy { width: 100%; padding-bottom: 0; }
  .bt-page-hero__copy > p:last-child { margin-top: 24px; font-size: .96rem; }
  .bt-page-hero__visual { inset: 0; width: 100%; }
  .bt-page-hero__visual::before { background: linear-gradient(180deg, var(--bt-site-background) 0%, rgba(242,242,242,.96) 46%, rgba(242,242,242,.18) 78%, transparent 100%); }
  .bt-page-hero__visual img { object-position: center bottom; }
  .bt-page-hero__visual img { object-position: center bottom; }
  .bt-hero h1 { color: var(--bt-white); font-size: clamp(2.7rem, 10vw, 4.3rem); }
  .bt-hero__lead, .bt-hero .bt-text-link { color: rgba(255,255,255,.88); }
  .bt-hero .bt-button--gold:hover, .bt-hero .bt-button--gold:focus-visible { color: var(--bt-navy); background: var(--bt-white); border-color: var(--bt-white); }
  .bt-hero .bt-kicker--light { color: var(--bt-gold-light); }
  .bt-hero .bt-kicker--light span { color: var(--bt-gold); }
  .bt-field__photo::after { top: auto; left: 0; width: 100%; height: 30%; background: linear-gradient(180deg, rgba(255,255,255,0), var(--bt-white)); }
  .bt-field__photo { height: min(72svh, 540px); }
  .bt-field__photo img { object-position: center; }
  .bt-field__copy { width: 100%; padding: 64px 24px; background: var(--bt-white); }
  .bt-services-grid-section { padding: 82px 0; }
  .bt-services-grid { grid-template-columns: 1fr; }
  .bt-service-box__body { padding: 30px 24px; }
  .bt-about-hero { min-height: 100svh; grid-template-columns: 1fr; grid-template-rows: 42svh minmax(58svh, auto); }
  .bt-about-hero__image { min-height: 0; height: 42svh; }
  .bt-about-hero__image::after { background: linear-gradient(180deg, transparent 52%, var(--bt-site-background) 100%); }
  .bt-about-hero__image img { object-position: center 27%; }
  .bt-about-hero__copy { min-height: 58svh; justify-content: center; padding: 46px 24px 42px; }
  .bt-about-hero h1 { font-size: clamp(2.7rem, 10vw, 4.3rem); line-height: 1; }
  .bt-about-hero__copy > p:last-child { margin-top: 22px; font-size: .96rem; }
  .bt-certification { background: var(--bt-paper); }
  .bt-certification__grid { align-items: start; }
  .bt-sencamer-proof--section { max-width: none; display: grid; grid-template-columns: minmax(110px, 170px) 1fr; align-items: center; gap: 18px; padding: 22px; border: 1px solid #d4d8dd; background: var(--bt-white); box-shadow: none; }
  .bt-sencamer-proof--section img { width: 100%; }
  .bt-certification__grid .bt-sencamer-proof--section p { color: var(--bt-navy); font-size: .82rem; }
  .bt-contact { padding: 130px 0 76px; }
  .bt-contact__grid { gap: 42px; }
  .bt-contact h1 { max-width: 560px; font-size: clamp(2.7rem, 10vw, 4.3rem); }
  .bt-form-panel { padding: 24px 18px; }
}

@media (max-width: 520px) {
  .bt-hero__actions { width: 100%; }
  .bt-hero__actions .bt-button { width: 100%; }
  .bt-service-card, .bt-js .bt-service-card { min-height: 0; }
  .bt-sencamer-proof--section { grid-template-columns: 1fr; }
  .bt-sencamer-proof--section img { width: min(190px, 100%); }
  .bt-form-tabs { grid-template-columns: 1fr; }
  .bt-form-live .ff-btn-submit { width: 100% !important; }
  .bt-footer__certification { grid-template-columns: 1fr; gap: 18px; }
  .bt-footer__certification img { width: min(236px, 100%); max-height: 66px; }
}

@media (max-width: 520px) {
  .bt-hero__actions { align-items: flex-start; flex-direction: column; }
  .bt-service-list { min-height: 0; }
  .bt-service-card, .bt-js .bt-service-card { grid-template-columns: 1fr; min-height: 0; padding: 28px 18px; }
  .bt-service-card__floor { margin-bottom: 18px; }
  .bt-story__photo::before { inset: 14px -14px -14px 14px; }
  .bt-footer__grid { grid-template-columns: 1fr; }
  .bt-footer__brand { grid-column: auto; }
  .bt-footer__map, .bt-footer__map iframe { min-height: 240px; }
  .bt-purpose__grid article, .bt-contact-notes article { padding: 32px 24px; }
  .bt-contact-notes__grid, .bt-form-row { grid-template-columns: 1fr; }
  .bt-contact__channels a { grid-template-columns: 1fr; gap: 4px; }
  .bt-sencamer-proof--section { align-items: flex-start; }
}

/* Home content expansion 1.3.3 */
.bt-green { padding: 76px 0; color: var(--bt-white); background: var(--bt-navy); }
.bt-green__grid { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 7%; align-items: center; }
.bt-green h2, .bt-financing h2, .bt-learning h2, .bt-media h2, .bt-testimonials h2, .bt-visit h2 { margin: 0; font-family: var(--bt-font-heading); font-size: clamp(2.4rem, 3.8vw, 4rem); font-weight: 400; line-height: 1.04; letter-spacing: -.04em; text-wrap: balance; }
.bt-green h2 { max-width: 850px; font-size: clamp(2.25rem, 3.7vw, 3.9rem); }
.bt-green__visual { overflow: hidden; border: 1px solid rgba(255,255,255,.16); aspect-ratio: 1; }
.bt-green__visual img { width: 100%; height: 100%; object-fit: cover; }
.bt-green__copy > p:not(.bt-kicker) { max-width: 850px; margin: 22px 0 0; color: rgba(255,255,255,.78); font-size: 1rem; }
.bt-green .bt-button { margin-top: 14px; }

.bt-financing { padding: 92px 0; background: var(--bt-gold-light); }
.bt-financing__grid { display: flex; flex-direction: column; align-items: center; max-width: 980px; text-align: center; }
.bt-financing .bt-kicker { margin: 0 0 24px; }
.bt-financing h2 { max-width: 850px; font-size: clamp(2.3rem, 3.8vw, 4rem); }
.bt-financing p { max-width: 780px; margin: 26px 0 32px; color: #3c4552; font-size: 1.04rem; line-height: 1.7; }
.bt-financing .bt-button { min-width: 250px; justify-content: center; }
.bt-financing .bt-button--navy { color: var(--bt-white) !important; background: var(--bt-navy); border-color: var(--bt-navy); }
.bt-financing .bt-button--navy span { color: var(--bt-gold-light); }
.bt-financing .bt-button--navy:hover, .bt-financing .bt-button--navy:focus-visible { color: var(--bt-navy) !important; background: var(--bt-white); border-color: var(--bt-navy); }
.bt-financing .bt-button--navy:hover span, .bt-financing .bt-button--navy:focus-visible span { color: var(--bt-navy); }

.bt-learning { padding: 118px 0; background: var(--bt-white); }
.bt-learning .bt-section-heading, .bt-testimonials .bt-section-heading { max-width: none; display: grid; grid-template-columns: 1.25fr .75fr; gap: 9%; align-items: end; }
.bt-learning .bt-section-heading > p { margin: 0; color: var(--bt-muted); font-size: 1.05rem; }
.bt-faq-grid { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid #cfd3d8; }
.bt-faq-grid details { border-bottom: 1px solid #cfd3d8; }
.bt-faq-grid details:nth-child(odd) { border-right: 1px solid #cfd3d8; }
.bt-faq-grid summary { min-height: 104px; display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; padding: 26px 30px; color: var(--bt-navy); font-weight: 800; cursor: pointer; list-style: none; }
.bt-faq-grid summary::-webkit-details-marker { display: none; }
.bt-faq-grid summary span { color: var(--bt-orange); font-family: var(--bt-font-technical); font-size: 1.4rem; transition: transform .2s ease; }
.bt-faq-grid details[open] summary span { transform: rotate(45deg); }
.bt-faq-grid details p { margin: -6px 0 0; padding: 0 62px 30px 30px; color: var(--bt-muted); }

.bt-media { padding: 118px 0; background: var(--bt-site-background); }
.bt-media__heading { max-width: none; display: grid; grid-template-columns: 1.25fr .75fr; gap: 9%; align-items: end; }
.bt-media__heading > p { margin: 0; color: var(--bt-muted); font-size: 1.05rem; }
.bt-media__cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.bt-media-card { min-width: 0; overflow: hidden; border: 1px solid rgba(16,33,95,.14); background: var(--bt-white); box-shadow: 0 18px 44px rgba(16,33,95,.09); }
.bt-media-card__preview { position: relative; display: block; aspect-ratio: 16 / 9; overflow: hidden; color: var(--bt-white); background: var(--bt-navy); }
.bt-media-card__preview > img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.bt-media-card__preview--tlt > img { padding: 0; object-fit: cover; object-position: center top; background: var(--bt-white); }
.bt-media-card__preview:hover > img { transform: scale(1.025); }
.bt-media-card__play { position: absolute; left: 24px; bottom: 22px; display: grid; place-items: center; width: 54px; height: 54px; padding-left: 3px; border: 1px solid rgba(255,255,255,.62); border-radius: 50%; color: var(--bt-navy); background: var(--bt-gold); box-shadow: 0 8px 24px rgba(0,0,0,.2); transition: color .2s ease, background-color .2s ease, border-color .2s ease, transform .2s ease; }
.bt-media-card__preview:hover .bt-media-card__play, .bt-media-card__preview:focus-visible .bt-media-card__play { color: var(--bt-navy); background: var(--bt-white); border-color: var(--bt-white); transform: scale(1.06); }
.bt-media-card__embed { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--bt-navy); }
.bt-media-card__embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.bt-media-card__copy { padding: 30px; }
.bt-media-card__copy > span { color: var(--bt-gold); font-size: .72rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.bt-media-card__copy h3 { margin: 12px 0 14px; color: var(--bt-navy); font-family: var(--bt-font-heading); font-size: clamp(1.55rem, 2.3vw, 2.35rem); font-weight: 400; line-height: 1.08; }
.bt-media-card__copy p { margin: 0 0 22px; color: var(--bt-muted); }
.bt-media-card__copy a { color: var(--bt-navy); font-size: .78rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; text-decoration: none; }

.bt-testimonials { padding: 76px 0; color: var(--bt-ink); background: var(--bt-paper); }
.bt-testimonials .bt-section-heading { display: block; max-width: 560px; margin-bottom: 30px; }
.bt-testimonials .bt-kicker--light { color: var(--bt-blue); }
.bt-testimonials .bt-kicker--light span { color: var(--bt-orange); }
.bt-testimonials h2 { font-size: clamp(2.25rem, 3.4vw, 3.5rem); }
.bt-demo-warning { align-self: end; margin: 0; padding: 16px 18px; border: 1px solid rgba(234,216,173,.35); color: var(--bt-gold-light); font-size: .78rem; line-height: 1.5; }
.bt-testimonial-carousel { min-width: 0; }
.bt-testimonial-grid { display: grid; gap: 22px; }
.bt-testimonial-slide { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: start; gap: 22px; min-width: 0; }
.bt-js .bt-testimonial-carousel { overflow: hidden; }
.bt-js .bt-testimonial-grid { display: flex; align-items: flex-start; gap: 0; transition: transform .65s cubic-bezier(.22,.61,.36,1), height .5s cubic-bezier(.22,.61,.36,1); will-change: transform, height; }
.bt-js .bt-testimonial-slide { flex: 0 0 100%; align-self: flex-start; }
.bt-js .bt-testimonial-carousel.is-page-2 .bt-testimonial-grid { transform: translateX(-100%); }
.bt-testimonial { min-width: 0; padding: 30px; border: 1px solid rgba(16,33,95,.14); background: var(--bt-white); box-shadow: 0 14px 34px rgba(16,33,95,.07); }
.bt-testimonial__content { display: flex; flex-direction: column; height: auto; }
.bt-testimonial__stars { margin-bottom: 20px; color: var(--bt-gold); font-size: .92rem; line-height: 1; letter-spacing: .14em; }
.bt-testimonial blockquote { margin: 0; color: var(--bt-navy); font-family: var(--bt-font-heading); font-size: clamp(1.12rem, 1.35vw, 1.42rem); font-weight: 400; line-height: 1.4; letter-spacing: -.01em; }
.bt-testimonial__content > p { margin: 26px 0 0; color: var(--bt-blue); font-size: .7rem; font-weight: 800; line-height: 1.45; letter-spacing: .07em; text-transform: uppercase; }
.bt-testimonial-controls { display: none; }
.bt-js .bt-testimonial-controls { display: flex; align-items: center; justify-content: flex-end; gap: 12px; margin-top: 24px; }
.bt-testimonial-controls button { display: grid; place-items: center; width: 42px; height: 42px; padding: 0; border: 1px solid rgba(16,33,95,.2); color: var(--bt-navy); background: var(--bt-white); cursor: pointer; transition: color .2s ease, background-color .2s ease, border-color .2s ease; }
.bt-testimonial-controls button:hover, .bt-testimonial-controls button:focus-visible { color: var(--bt-white); background: var(--bt-navy); border-color: var(--bt-navy); }
.bt-testimonial-controls p { min-width: 42px; margin: 0; color: var(--bt-muted); font-family: var(--bt-font-technical); font-size: .75rem; text-align: center; }

.bt-visit { padding: 100px 0; background: var(--bt-white); }
.bt-visit__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10%; align-items: center; }
.bt-visit__grid > div:last-child { padding-left: 9%; border-left: 1px solid #cfd3d8; }
.bt-visit__grid > div:last-child p { max-width: 600px; margin: 0 0 28px; color: var(--bt-muted); font-size: 1.08rem; }
.bt-footer__address { max-width: 330px; color: inherit; font-size: inherit; line-height: inherit; }

@media (max-width: 920px) {
  .bt-green__grid { grid-template-columns: 220px minmax(0, 1fr); gap: 5%; }
  .bt-media__cards { gap: 18px; }
  .bt-js .bt-testimonial-carousel { overflow: visible; }
  .bt-js .bt-testimonial-grid { display: grid; height: auto !important; gap: 22px; transform: none !important; transition: none; }
  .bt-testimonial-slide { grid-template-columns: 1fr; }
  .bt-js .bt-testimonial-controls { display: none; }
  .bt-testimonial:last-child { grid-column: auto; }
}

@media (max-width: 800px) {
  .bt-whatsapp-float { right: 18px; bottom: 18px; width: 56px; height: 56px; }
  .bt-whatsapp-float svg { width: 31px; height: 31px; }
  .bt-green, .bt-learning, .bt-media, .bt-testimonials, .bt-visit { padding: 82px 0; }
  .bt-green h2, .bt-financing h2, .bt-learning h2, .bt-media h2, .bt-testimonials h2, .bt-visit h2 { font-size: clamp(2.2rem, 8.5vw, 3.4rem); }
  .bt-learning .bt-section-heading, .bt-media__heading, .bt-testimonials .bt-section-heading, .bt-visit__grid { grid-template-columns: 1fr; gap: 30px; }
  .bt-green__grid { grid-template-columns: 120px minmax(0, 1fr); gap: 24px; }
  .bt-green h2 { font-size: clamp(2rem, 7.4vw, 3rem); }
  .bt-green__copy > p:not(.bt-kicker) { font-size: .92rem; }
  .bt-faq-grid { grid-template-columns: 1fr; }
  .bt-faq-grid details:nth-child(odd) { border-right: 0; }
  .bt-media__cards { grid-template-columns: 1fr; }
  .bt-testimonial { padding: 28px; }
  .bt-visit__grid > div:last-child { padding: 30px 0 0; border-top: 1px solid #cfd3d8; border-left: 0; }
}

@media (max-width: 600px) {
  .bt-footer__logo-link { width: 210px; min-height: 156px; padding: 12px 16px; }
  .bt-whatsapp-float { right: 14px; bottom: 14px; width: 54px; height: 54px; }
  .bt-financing { padding: 64px 0; }
  .bt-financing p { margin-bottom: 28px; }
  .bt-faq-grid summary { min-height: 88px; padding: 22px 18px; }
  .bt-faq-grid details p { padding: 0 42px 24px 18px; }
  .bt-media-card__copy { padding: 24px 20px; }
  .bt-testimonial-grid { grid-template-columns: 1fr; }
  .bt-testimonial:last-child { grid-column: auto; }
  .bt-testimonial blockquote { font-size: clamp(1.4rem, 6.6vw, 1.85rem); }
  .bt-brand-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 34px; }
  .bt-brand-list > span, .bt-brand-list > span:nth-child(4), .bt-brand-list > span:nth-child(5) { grid-column: auto; height: 96px; padding: 16px 18px; }
  .bt-brand-list > span:last-child { grid-column: 1 / -1; width: calc(50% - 6px); justify-self: center; }
  .bt-brand-list > span > img { height: 56px; }
  .bt-green__grid { grid-template-columns: 1fr; }
  .bt-green__visual { width: 150px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
  .bt-js [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .bt-header, .bt-footer, .bt-elevator, .bt-cta { display: none; }
  .bt-hero, .bt-page-hero, .bt-about-hero, .bt-contact, .bt-purpose, .bt-field { color: #000; background: #fff; }
  .bt-hero { min-height: auto; padding: 40px 0; }
  .bt-service-card { min-height: auto; opacity: 1; }
}


/* Formulario de cotización (Fluent Forms): identidad B&T */
.bt-form-live label { color: var(--bt-navy); font-size: .78rem; font-weight: 800; letter-spacing: .025em; }
.bt-form-live input[type='text'], .bt-form-live input[type='email'], .bt-form-live input[type='tel'], .bt-form-live input[type='number'], .bt-form-live select, .bt-form-live textarea { width: 100%; min-height: 47px; padding: 10px 12px; border: 1px solid #cfd4da; border-radius: 0; color: var(--bt-ink); background: #fbfbfa; font: inherit; }
.bt-form-live textarea { min-height: 110px; }
.bt-form-live input:focus, .bt-form-live select:focus, .bt-form-live textarea:focus { border-color: var(--bt-gold); outline: none; box-shadow: 0 0 0 3px var(--bt-gold-light); background: var(--bt-white); }
.bt-form-live .ff-btn-submit { min-height: 52px; padding: 12px 28px; font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; }
.bt-form-live .ff-message-success { padding: 15px 18px; border-left: 3px solid var(--bt-gold); color: var(--bt-navy); background: var(--bt-paper); }