:root {
  --navy-950: #010814;
  --navy-900: #031226;
  --navy-800: #08213d;
  --navy-700: #123a61;
  --blue: #078fe8;
  --blue-light: #43b8ff;
  --red: #ee352f;
  --white: #fff;
  --paper: #f5f8fb;
  --ink: #10263d;
  --muted: #64788d;
  --line: #dbe5ed;
  --radius: 18px;
  --shadow: 0 24px 70px rgba(3, 18, 38, .13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 82px; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "Segoe UI", Arial, sans-serif; line-height: 1.65; -webkit-font-smoothing: antialiased; }
body.nav-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 42px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 999; top: 10px; left: 10px; padding: 10px 15px; color: var(--white); background: var(--blue); transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.site-header { position: fixed; z-index: 100; top: 0; right: 0; left: 0; height: 80px; color: var(--white); background: linear-gradient(to bottom, rgba(1, 8, 20, .95), rgba(1, 8, 20, .7)); border-bottom: 1px solid rgba(255,255,255,.08); transition: height .25s, background .25s, box-shadow .25s; }
.site-header.scrolled { height: 70px; background: rgba(1, 8, 20, .97); box-shadow: 0 10px 35px rgba(0,0,0,.25); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.brand { display: block; width: 148px; }
.brand img { width: 100%; max-height: 62px; object-fit: contain; }
.site-nav { display: flex; align-items: center; gap: clamp(17px, 2.3vw, 31px); font-size: 13px; font-weight: 650; letter-spacing: .035em; }
.site-nav > a:not(.nav-contact) { position: relative; color: rgba(255,255,255,.78); }
.site-nav > a:not(.nav-contact)::after { position: absolute; right: 0; bottom: -8px; left: 0; height: 2px; background: var(--blue); content: ""; transform: scaleX(0); transition: transform .2s; }
.site-nav > a:hover { color: var(--white); }
.site-nav > a:hover::after { transform: scaleX(1); }
.nav-contact { padding: 10px 17px; border: 1px solid var(--blue); border-radius: 6px; }
.nav-contact:hover { background: var(--blue); }
.nav-toggle { display: none; width: 44px; height: 44px; padding: 10px; background: none; border: 0; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; margin: 6px 0; background: var(--white); transition: transform .2s, opacity .2s; }

.hero { position: relative; display: grid; place-items: center; min-height: clamp(410px, 43.4vw, 740px); padding-top: 80px; overflow: hidden; color: var(--white); background: #020b17; }
.hero-image { width: 100%; height: auto; max-height: calc(100vh - 40px); object-fit: contain; }
.scroll-cue { position: absolute; bottom: 18px; left: 50%; display: flex; align-items: center; gap: 9px; padding: 8px 13px; color: rgba(255,255,255,.72); background: rgba(1,8,20,.55); border: 1px solid rgba(255,255,255,.13); border-radius: 99px; font-size: 11px; letter-spacing: .09em; text-transform: uppercase; transform: translateX(-50%); backdrop-filter: blur(8px); }
.scroll-cue span { color: var(--blue-light); font-size: 17px; }

.section { padding: 110px 0; }
.section-heading { max-width: 780px; margin-bottom: 52px; }
.section-heading.compact { max-width: 650px; }
.eyebrow { margin: 0 0 13px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .19em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; color: var(--navy-900); line-height: 1.13; }
h1 { margin-bottom: 22px; font-size: clamp(38px, 5.2vw, 68px); letter-spacing: -.045em; }
h2 { margin-bottom: 19px; font-size: clamp(31px, 4vw, 50px); letter-spacing: -.035em; }
h3 { margin-bottom: 9px; font-size: 19px; }
.section-heading > p:last-child, .sector-copy > p { color: var(--muted); font-size: 17px; }

.intro { background: linear-gradient(180deg, var(--white), #f7fafc); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card { position: relative; min-height: 265px; padding: 34px 31px; overflow: hidden; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 16px 45px rgba(3,18,38,.07); transition: transform .25s, box-shadow .25s; }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.service-card::before { position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--blue), var(--red)); content: ""; }
.card-number { display: block; margin-bottom: 42px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .15em; }
.service-card h2 { font-size: 23px; }
.service-card p { margin: 0; color: var(--muted); }

.sector { overflow: hidden; }
.sector-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(55px, 8vw, 110px); }
.sector-grid.reverse .sector-visual { order: 2; }
.sector-grid.reverse .sector-copy { order: 1; }
.sector-visual { position: relative; min-height: 470px; overflow: hidden; color: var(--white); background: linear-gradient(145deg, #0a3158, #020916 72%); border: 1px solid rgba(80,185,255,.17); border-radius: 26px; box-shadow: var(--shadow); isolation: isolate; }
.sector-visual::before { position: absolute; z-index: -1; top: -30%; left: -20%; width: 85%; aspect-ratio: 1; background: radial-gradient(circle, rgba(28,161,244,.3), transparent 67%); border-radius: 50%; content: ""; animation: scene-glow 5s ease-in-out infinite alternate; }
.sector-visual::after { position: absolute; z-index: 5; right: 32px; bottom: 30px; left: 32px; height: 1px; background: linear-gradient(90deg, transparent, rgba(255,255,255,.2), transparent); content: ""; }
.business-visual { background: linear-gradient(145deg, #152f4d, #020916 72%); }
.business-visual::before { right: -16%; left: auto; background: radial-gradient(circle, rgba(238,53,47,.22), transparent 67%); }
.scene-label { position: absolute; z-index: 6; right: 0; bottom: 42px; left: 0; font-size: 11px; font-weight: 800; letter-spacing: .2em; text-align: center; text-transform: uppercase; }

/* Animated residential room */
.home-scene, .commercial-scene { position: absolute; inset: 0; }
.home-scene::before { position: absolute; right: 0; bottom: 75px; left: 0; height: 31%; background: linear-gradient(155deg, rgba(255,255,255,.12), rgba(255,255,255,.025)); border-top: 1px solid rgba(255,255,255,.16); content: ""; }
.scene-window { position: absolute; top: 63px; right: 49px; width: 112px; height: 135px; overflow: hidden; background: linear-gradient(160deg, #0c87d1, #9edbff); border: 8px solid rgba(227,242,252,.8); box-shadow: 0 15px 30px rgba(0,0,0,.22); }
.scene-window::before, .scene-window::after { position: absolute; background: rgba(237,248,255,.67); content: ""; }
.scene-window::before { top: 50%; right: 0; left: 0; height: 3px; }
.scene-window::after { top: 0; bottom: 0; left: 50%; width: 3px; }
.scene-window i { position: absolute; top: 14px; right: 13px; width: 28px; height: 28px; background: #ffd65e; border-radius: 50%; box-shadow: 0 0 22px rgba(255,214,94,.9); animation: sun-pulse 3.5s ease-in-out infinite; }
.mini-split { position: absolute; top: 70px; left: 42px; width: 197px; height: 65px; background: linear-gradient(#f9fdff, #bdd2e0); border-radius: 14px 14px 8px 8px; box-shadow: 0 15px 28px rgba(0,0,0,.25); transform: perspective(500px) rotateY(5deg); }
.mini-split::before { position: absolute; right: 15px; bottom: 17px; left: 15px; height: 4px; background: #6d8495; border-radius: 4px; content: ""; }
.mini-split::after { position: absolute; right: 18px; bottom: 8px; left: 18px; height: 7px; background: linear-gradient(#39576e, #102d44); border-radius: 2px 2px 7px 7px; content: ""; animation: vent-open 3s ease-in-out infinite; transform-origin: top; }
.unit-light { position: absolute; top: 18px; right: 19px; width: 5px; height: 5px; background: #1dcc8c; border-radius: 50%; box-shadow: 0 0 7px #1dcc8c; }
.home-airflow { position: absolute; top: 132px; left: 67px; width: 210px; height: 118px; transform: rotate(9deg); }
.home-airflow i { position: absolute; width: 135px; height: 44px; border-bottom: 3px solid rgba(55,185,255,.74); border-radius: 50%; filter: drop-shadow(0 0 6px rgba(0,162,255,.5)); animation: home-flow 2.8s ease-in-out infinite; }
.home-airflow i:nth-child(2) { top: 25px; left: 22px; width: 155px; animation-delay: -.9s; }
.home-airflow i:nth-child(3) { top: 52px; left: 41px; width: 128px; animation-delay: -1.8s; }
.scene-sofa { position: absolute; bottom: 83px; left: 42px; width: 235px; height: 82px; background: linear-gradient(135deg, #52738e, #263f57); border-radius: 24px 24px 11px 11px; box-shadow: 0 20px 24px rgba(0,0,0,.27); }
.scene-sofa::before { position: absolute; top: -34px; left: 13px; width: 202px; height: 63px; background: linear-gradient(145deg, #6e8fa8, #35536c); border-radius: 24px 24px 8px 8px; content: ""; }
.scene-sofa i { position: absolute; z-index: 1; top: -21px; width: 74px; height: 43px; background: #829db1; border-radius: 13px; box-shadow: inset 0 -7px 12px rgba(0,0,0,.1); }
.scene-sofa i:first-child { left: 27px; }
.scene-sofa i:last-child { right: 27px; }
.scene-plant { position: absolute; right: 43px; bottom: 76px; width: 58px; height: 112px; }
.scene-plant i { position: absolute; bottom: 0; left: 8px; width: 46px; height: 42px; background: linear-gradient(90deg, #8d583e, #c47c55); border-radius: 5px 5px 17px 17px; }
.scene-plant b { position: absolute; bottom: 36px; left: 25px; width: 24px; height: 60px; background: #24a570; border-radius: 100% 0 100% 0; transform-origin: bottom; }
.scene-plant b:nth-of-type(1) { transform: rotate(-37deg); }
.scene-plant b:nth-of-type(2) { height: 72px; transform: rotate(3deg); }
.scene-plant b:nth-of-type(3) { transform: rotate(39deg) scaleX(-1); }
.temperature-chip { position: absolute; right: 40px; top: 219px; display: flex; align-items: center; gap: 7px; padding: 7px 12px; color: #dff5ff; background: rgba(1,13,27,.72); border: 1px solid rgba(82,194,255,.3); border-radius: 99px; font-size: 12px; font-weight: 800; backdrop-filter: blur(7px); }
.temperature-chip i { width: 7px; height: 7px; background: var(--blue-light); border-radius: 50%; box-shadow: 0 0 9px var(--blue-light); animation: status-pulse 1.8s ease-in-out infinite; }

/* Animated commercial system */
.office-building { position: absolute; right: 66px; bottom: 76px; width: 275px; height: 272px; background: linear-gradient(120deg, #38536e, #142d45); border: 1px solid rgba(255,255,255,.2); clip-path: polygon(0 8%, 82% 0, 100% 12%, 100% 100%, 0 100%); box-shadow: 0 28px 45px rgba(0,0,0,.35); }
.office-building::after { position: absolute; right: 0; bottom: 0; width: 18%; height: 88%; background: rgba(0,0,0,.18); content: ""; }
.office-windows { position: absolute; top: 49px; right: 48px; left: 26px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px 14px; }
.office-windows i { display: block; height: 42px; background: linear-gradient(145deg, #b9e8ff, #269edc); border: 3px solid #203c56; box-shadow: inset 0 -8px 13px rgba(0,68,112,.28), 0 0 12px rgba(55,184,255,.17); animation: window-breathe 4s ease-in-out infinite; }
.office-windows i:nth-child(2n) { animation-delay: -1.4s; }
.office-windows i:nth-child(3n) { animation-delay: -2.7s; }
.office-door { position: absolute; bottom: 0; left: 114px; width: 55px; height: 57px; background: linear-gradient(90deg, #09243d 49%, #2f709c 50%); border: 3px solid #203c56; }
.roof-unit { position: absolute; z-index: 3; top: 43px; left: 47px; width: 126px; height: 71px; background: linear-gradient(145deg, #d2dee7, #73899b); border-radius: 7px; box-shadow: 0 15px 25px rgba(0,0,0,.25); transform: perspective(450px) rotateY(-9deg); }
.roof-unit::before { position: absolute; top: 13px; left: 16px; width: 43px; height: 43px; border: 4px solid #435b6d; border-radius: 50%; content: ""; }
.roof-unit i { position: absolute; top: 19px; left: 22px; width: 31px; height: 31px; background: repeating-conic-gradient(#3c5264 0 12deg, transparent 12deg 48deg); border-radius: 50%; animation: fan-spin 2.1s linear infinite; }
.roof-unit b { position: absolute; right: 14px; bottom: 14px; width: 43px; height: 5px; background: repeating-linear-gradient(90deg, #415a6e 0 4px, transparent 4px 7px); }
.commercial-airflow { position: absolute; z-index: 2; top: 102px; left: 60px; width: 130px; height: 182px; }
.commercial-airflow i { position: absolute; top: 0; width: 3px; height: 125px; background: linear-gradient(to bottom, rgba(58,188,255,.92), transparent); border-radius: 99px; filter: drop-shadow(0 0 6px #119de8); animation: commercial-flow 2.4s ease-in-out infinite; transform: rotate(-13deg); }
.commercial-airflow i:nth-child(1) { left: 18px; }
.commercial-airflow i:nth-child(2) { left: 56px; animation-delay: -.8s; }
.commercial-airflow i:nth-child(3) { left: 94px; animation-delay: -1.6s; }
.zone-status { position: absolute; z-index: 4; top: 45px; right: 34px; display: flex; align-items: center; gap: 8px; padding: 8px 12px; color: #dff5ff; background: rgba(1,13,27,.74); border: 1px solid rgba(79,194,255,.3); border-radius: 7px; font-size: 11px; font-weight: 750; backdrop-filter: blur(7px); }
.zone-status i { width: 7px; height: 7px; background: #25d795; border-radius: 50%; box-shadow: 0 0 9px #25d795; animation: status-pulse 1.8s ease-in-out infinite; }
.zone-status span { position: static; letter-spacing: .02em; text-transform: none; }

@keyframes scene-glow { to { transform: translate(8%, 6%) scale(1.1); opacity: .7; } }
@keyframes sun-pulse { 50% { transform: scale(1.1); box-shadow: 0 0 33px rgba(255,214,94,1); } }
@keyframes vent-open { 50% { transform: perspective(50px) rotateX(-35deg); } }
@keyframes home-flow { 0%, 100% { opacity: .2; transform: translate(-8px, -3px) scaleX(.86); } 50% { opacity: 1; transform: translate(18px, 8px) scaleX(1.08); } }
@keyframes fan-spin { to { transform: rotate(360deg); } }
@keyframes commercial-flow { 0%, 100% { opacity: .15; transform: translateY(-8px) rotate(-13deg) scaleY(.7); } 50% { opacity: 1; transform: translateY(19px) rotate(-13deg) scaleY(1.1); } }
@keyframes window-breathe { 0%, 100% { filter: brightness(.7); } 50% { filter: brightness(1.25); } }
@keyframes status-pulse { 50% { opacity: .35; transform: scale(.75); } }
.feature-list { display: grid; gap: 12px; margin: 27px 0 30px; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-left: 29px; color: var(--navy-700); }
.feature-list li::before { position: absolute; top: 1px; left: 0; color: var(--blue); font-weight: 900; content: "✓"; }
.text-link { display: inline-flex; align-items: center; gap: 11px; color: var(--navy-900); font-weight: 750; border-bottom: 2px solid var(--blue); }
.text-link span { color: var(--blue); transition: transform .2s; }
.text-link:hover span { transform: translateX(4px); }
.sector-dark { color: var(--white); background: var(--navy-950); }
.sector-dark h2 { color: var(--white); }
.sector-dark .sector-copy > p, .sector-dark .feature-list li { color: rgba(255,255,255,.64); }
.sector-dark .text-link { color: var(--white); }

.process { background: var(--paper); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.process-step { padding: 28px 24px; background: var(--white); border: 1px solid var(--line); border-radius: 14px; }
.process-step strong { display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 24px; color: var(--white); background: var(--blue); border-radius: 50%; }
.process-step p { margin: 0; color: var(--muted); font-size: 14px; }

.calculator { color: var(--white); background: radial-gradient(circle at 0 50%, rgba(7,143,232,.28), transparent 31%), linear-gradient(135deg, #061c36, #020916); }
.calculator-grid { display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: clamp(55px, 8vw, 100px); }
.calculator h2 { color: var(--white); }
.calculator-copy > p:not(.eyebrow) { color: rgba(255,255,255,.65); font-size: 17px; }
.calculator-note { margin-top: 28px; padding: 17px 20px; color: rgba(255,255,255,.65); background: rgba(255,255,255,.05); border-left: 3px solid var(--blue); font-size: 13px; }
.btu-form { padding: 38px; color: var(--ink); background: var(--white); border-radius: var(--radius); box-shadow: 0 30px 75px rgba(0,0,0,.25); }
.calculator-result { min-height: 92px; margin-top: 19px; padding: 18px 20px; color: var(--white); background: var(--navy-900); border-radius: 10px; text-align: center; }
.calculator-result p { margin: 14px 0; color: rgba(255,255,255,.65); font-size: 13px; }
.calculator-result strong { display: block; font-size: 32px; line-height: 1.1; }
.calculator-result span { display: block; margin-top: 5px; color: var(--blue-light); font-weight: 700; }
.calculator-result small { display: block; margin-top: 6px; color: rgba(255,255,255,.53); }

.contact { padding: 110px 0; color: var(--white); background: radial-gradient(circle at 15% 0, rgba(7,143,232,.25), transparent 34%), linear-gradient(135deg, var(--navy-800), var(--navy-950)); }
.contact-grid { display: grid; grid-template-columns: .78fr 1.1fr; align-items: center; gap: clamp(60px, 9vw, 120px); }
.contact h2 { color: var(--white); }
.contact-copy > p:not(.eyebrow) { color: rgba(255,255,255,.66); font-size: 17px; }
.contact-form { position: relative; padding: 39px; color: var(--ink); background: var(--white); border-radius: var(--radius); box-shadow: 0 30px 75px rgba(0,0,0,.27); }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; margin-bottom: 7px; color: var(--navy-900); font-size: 13px; font-weight: 700; }
.form-row input, .form-row select, .form-row textarea { width: 100%; padding: 12px 14px; color: var(--ink); background: #f8fafc; border: 1px solid #d8e2ea; border-radius: 8px; outline: 0; transition: border-color .2s, box-shadow .2s; }
.form-row textarea { min-height: 112px; resize: vertical; }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(7,143,232,.11); }
.two-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.three-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
.honeypot { position: absolute !important; left: -9999px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }
.form-consent { display: grid; grid-template-columns: 18px 1fr; align-items: start; gap: 10px; margin: 2px 0 18px; }
.form-consent input { width: 17px; height: 17px; margin: 3px 0 0; accent-color: var(--blue); }
.form-consent label { color: var(--muted); font-size: 12px; cursor: pointer; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 49px; padding: 12px 22px; font-weight: 800; letter-spacing: .025em; border: 0; border-radius: 7px; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; }
.button-primary { color: var(--white); background: linear-gradient(100deg, #047bca, var(--blue)); box-shadow: 0 10px 25px rgba(7,143,232,.25); }
.button-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(7,143,232,.35); }
.button-full { width: 100%; }
.button:disabled { cursor: wait; opacity: .7; transform: none; }
.form-note { margin: 13px 0 0; color: var(--muted); font-size: 12px; text-align: center; }
.form-status { min-height: 24px; margin-top: 9px; color: var(--navy-700); font-size: 13px; font-weight: 650; text-align: center; }
.form-status.success { color: #16784a; }
.form-status.error { color: #b32929; }

.site-footer { padding: 70px 0 24px; color: rgba(255,255,255,.64); background: #010813; }
.footer-grid { display: grid; grid-template-columns: 1.5fr .7fr .7fr; gap: 70px; padding-bottom: 50px; }
.footer-brand { width: 180px; }
.footer-grid > div:first-child p { max-width: 340px; margin-top: 20px; }
.footer-grid h2 { margin: 0 0 16px; color: var(--white); font-size: 13px; letter-spacing: .15em; text-transform: uppercase; }
.footer-grid > div:not(:first-child) { display: flex; flex-direction: column; gap: 9px; }
.footer-grid a:hover { color: var(--blue-light); }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 23px; border-top: 1px solid rgba(255,255,255,.1); font-size: 12px; }
.footer-bottom p { margin: 0; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .site-nav { position: fixed; top: 70px; right: 0; bottom: 0; left: 0; display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 28px 24px; background: rgba(1,8,20,.99); transform: translateX(100%); transition: transform .25s; }
  .site-nav.open { transform: none; }
  .site-nav a { padding: 15px 10px; border-bottom: 1px solid rgba(255,255,255,.08); }
  .nav-contact { margin-top: 16px; text-align: center; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; }
  .card-number { margin-bottom: 23px; }
  .sector-grid, .sector-grid.reverse, .calculator-grid, .contact-grid { grid-template-columns: 1fr; }
  .sector-grid.reverse .sector-visual, .sector-grid.reverse .sector-copy { order: initial; }
  .sector-visual { min-height: 390px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; gap: 35px; }
}

@media (max-width: 650px) {
  .container { width: min(100% - 28px, 1180px); }
  .site-header { height: 68px; }
  .brand { width: 120px; }
  .hero { min-height: 0; padding-top: 68px; }
  .hero-image { width: 100%; max-height: none; }
  .scroll-cue { display: none; }
  .section, .contact { padding: 78px 0; }
  h1 { font-size: 40px; }
  h2 { font-size: 33px; }
  .section-heading { margin-bottom: 34px; }
  .sector-visual { min-height: 310px; }
  .home-scene, .commercial-scene { transform: scale(.78); transform-origin: 50% 43%; }
  .scene-label { bottom: 28px; font-size: 9px; }
  .process-grid { grid-template-columns: 1fr; }
  .btu-form, .contact-form { padding: 27px 20px; }
  .two-columns, .three-columns { grid-template-columns: 1fr; gap: 0; }
  .form-row.two-columns > div, .form-row.three-columns > div { margin-bottom: 15px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

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