:root {
  --ink: #14191d;
  --ink-2: #1c2227;
  --paper: #f2f1ed;
  --white: #fff;
  --muted: #747b80;
  --line: #d7d7d2;
  --accent: #ee5b22;
  --display: "Barlow Condensed", Arial, sans-serif;
  --body: "Inter", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--body); overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 64px)); margin: 0 auto; }
.section { padding: 120px 0; }
.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 100; background: transparent; pointer-events: none; }
.scroll-progress i { display: block; width: 0; height: 100%; background: var(--accent); box-shadow: 0 0 12px rgba(238,91,34,.55); }

.site-header {
  position: fixed; inset: 0 0 auto; height: 88px; padding: 0 5vw; z-index: 50;
  display: flex; justify-content: space-between; align-items: center; color: white;
  transition: background .3s, height .3s, box-shadow .3s;
}
.site-header.scrolled { height: 72px; background: rgba(20,25,29,.98); box-shadow: 0 8px 28px rgba(0,0,0,.12); }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-logo { display: block; width: auto; height: 50px; object-fit: contain; }
.brand-name { font: 800 31px/1 var(--display); letter-spacing: .08em; }
.brand-mark { width: 29px; height: 29px; display: flex; gap: 3px; align-items: flex-end; transform: skewY(-13deg); }
.brand-mark i { width: 7px; display: block; background: var(--accent); }
.brand-mark i:nth-child(1) { height: 16px; }
.brand-mark i:nth-child(2) { height: 23px; }
.brand-mark i:nth-child(3) { height: 29px; }
.main-nav { display: flex; align-items: center; gap: 30px; font-size: 13px; font-weight: 600; }
.main-nav > a:not(.nav-cta) { position: relative; }
.main-nav > a:not(.nav-cta)::after { content: ""; position: absolute; height: 2px; left: 0; right: 100%; bottom: -7px; background: var(--accent); transition: right .25s; }
.main-nav > a:hover::after { right: 0; }
.nav-cta { padding: 14px 19px; border: 1px solid rgba(255,255,255,.45); display: flex; gap: 28px; transition: .2s; }
.nav-cta:hover { background: var(--accent); border-color: var(--accent); }
.menu-toggle { display: none; border: 0; background: none; width: 40px; height: 40px; padding: 10px; }
.menu-toggle span { display: block; height: 2px; background: #fff; margin: 6px 0; transition: .2s; }

.hero { height: min(900px, 100vh); min-height: 720px; color: white; position: relative; background: var(--ink); overflow: hidden; }
.hero-media { position: absolute; inset: 0; background: url("assets/rlh-hero.png") center/cover no-repeat; transform: scale(1.02); }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(11,15,18,.92) 0%, rgba(11,15,18,.67) 35%, rgba(11,15,18,.06) 72%), linear-gradient(0deg, rgba(11,15,18,.55), transparent 40%); }
.hero-grid { position: relative; height: 100%; display: flex; align-items: center; }
.hero-copy { width: min(670px, 65%); margin-top: 40px; }
.eyebrow { margin: 0 0 26px; text-transform: uppercase; font-size: 11px; font-weight: 700; letter-spacing: .2em; display: flex; gap: 12px; align-items: center; color: #5e656a; }
.eyebrow span { width: 28px; height: 2px; background: var(--accent); }
.eyebrow.light { color: rgba(255,255,255,.65); }
h1,h2,h3,p { margin-top: 0; }
h1 { font: 700 clamp(58px, 7.2vw, 104px)/.86 var(--display); letter-spacing: -.025em; text-transform: uppercase; margin: 0 0 32px; }
h1 em, h2 em { color: var(--accent); font-style: normal; }
.hero-lead { color: rgba(255,255,255,.72); width: min(580px, 100%); line-height: 1.75; font-size: 16px; }
.hero-actions { display: flex; align-items: center; gap: 42px; margin-top: 42px; }
.btn { display: inline-flex; border: 0; cursor: pointer; align-items: center; justify-content: space-between; min-width: 212px; padding: 18px 20px; font-weight: 600; font-size: 13px; transition: transform .2s, background .2s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: white; background: var(--accent); }
.btn-primary:hover { background: #d94c17; }
.btn span { font-size: 20px; font-weight: 400; }
.text-link { font-size: 13px; padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.45); display: flex; gap: 22px; }
.hero-index { position: absolute; right: 0; display: flex; flex-direction: column; align-items: center; gap: 12px; font-size: 10px; color: rgba(255,255,255,.55); }
.hero-index i { height: 75px; width: 1px; background: rgba(255,255,255,.32); position: relative; }
.hero-index i::before { content: ""; height: 25px; width: 2px; position: absolute; top: 0; left: 0; background: var(--accent); }
.hero-stats { position: absolute; bottom: 0; right: 0; display: grid; grid-template-columns: repeat(3, 180px); background: rgba(20,25,29,.88); backdrop-filter: blur(10px); }
.hero-stats div { padding: 23px 26px; border-left: 1px solid rgba(255,255,255,.12); }
.hero-stats strong, .hero-stats span { display: block; }
.hero-stats strong { font: 600 18px var(--display); text-transform: uppercase; letter-spacing: .04em; }
.hero-stats span { font-size: 10px; color: rgba(255,255,255,.5); margin-top: 4px; }

.trust-strip { display: grid; grid-template-columns: repeat(3,1fr); background: #e5e4df; border-bottom: 1px solid #d0d0cb; }
.trust-item { min-height: 150px; padding: 35px clamp(24px,4vw,65px); display: grid; grid-template-columns: 34px 1fr; gap: 18px; align-items: start; border-right: 1px solid #cdcdc7; }
.trust-item:last-child { border-right: 0; }
.trust-item > span { color: var(--accent); font: 600 11px var(--display); padding-top: 4px; }
.trust-item strong { display: block; font: 600 24px var(--display); text-transform: uppercase; letter-spacing: .015em; }
.trust-item p { max-width: 310px; margin: 8px 0 0; color: #747b7f; font-size: 11px; line-height: 1.6; }

.section-head { display: grid; grid-template-columns: 1.4fr .6fr; align-items: end; gap: 60px; margin-bottom: 70px; }
.section-head h2, .about h2, .process h2, .contact h2 { font: 700 clamp(48px, 5vw, 72px)/.95 var(--display); text-transform: uppercase; letter-spacing: -.02em; margin-bottom: 0; }
.section-head > p { color: var(--muted); line-height: 1.75; font-size: 14px; max-width: 410px; }
.services-grid { display: grid; grid-template-columns: repeat(3,1fr); }
.service-card { min-height: 410px; border: 1px solid var(--line); padding: 38px; position: relative; transition: transform .25s, box-shadow .25s; }
.service-card + .service-card { border-left: 0; }
.service-card:hover { transform: translateY(-7px); box-shadow: 0 20px 50px rgba(0,0,0,.08); z-index: 2; }
.service-card.dark { background: var(--ink); color: white; border-color: var(--ink); }
.card-no { font: 600 12px var(--display); color: #999; }
.service-icon { height: 125px; margin: 48px 0 24px; position: relative; display: flex; align-items: flex-end; gap: 14px; }
.service-icon i { display: block; border: 2px solid #777; }
.dark .service-icon i { border-color: #babec0; }
.columns i { width: 22px; height: 94px; border-top-width: 8px; }
.beam { align-items: center; gap: 0; }
.beam i:nth-child(1), .beam i:nth-child(3) { height: 102px; width: 19px; }
.beam i:nth-child(2) { height: 16px; width: 76px; }
.frame { align-items: center; gap: 0; }
.frame i:nth-child(1), .frame i:nth-child(3) { height: 94px; width: 15px; }
.frame i:nth-child(2) { align-self: flex-start; margin-top: 18px; width: 88px; height: 15px; }
.service-card h3 { font: 600 27px var(--display); text-transform: uppercase; margin-bottom: 14px; }
.service-card p { font-size: 13px; line-height: 1.65; color: var(--muted); max-width: 250px; }
.dark p { color: #9fa4a6; }
.service-card > a { position: absolute; right: 32px; bottom: 32px; font-size: 22px; color: var(--accent); }

.structure-lab { background: #161c20; color: white; overflow: hidden; }
.lab-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 75px; align-items: center; }
.lab-copy h2 { font: 700 clamp(48px, 5vw, 72px)/.95 var(--display); text-transform: uppercase; letter-spacing: -.02em; margin-bottom: 28px; }
.lab-copy > p:not(.eyebrow):not(.technical-note) { color: #a8adaf; font-size: 14px; line-height: 1.75; }
.component-list { list-style: none; padding: 0; margin: 35px 0; border-top: 1px solid rgba(255,255,255,.13); }
.component-list li { padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.13); display: grid; grid-template-columns: 15px 1fr; gap: 13px; cursor: pointer; opacity: .62; transition: opacity .2s, transform .2s; }
.component-list li:hover, .component-list li.active { opacity: 1; transform: translateX(5px); }
.component-list i { width: 8px; height: 8px; margin-top: 5px; background: var(--accent); }
.component-list strong, .component-list span { display: block; }
.component-list strong { font: 600 16px var(--display); text-transform: uppercase; letter-spacing: .04em; margin-bottom: 3px; }
.component-list span { color: #9fa5a7; font-size: 11px; line-height: 1.45; }
.technical-note { color: #757d80; font-size: 9px; line-height: 1.55; padding-left: 13px; border-left: 2px solid var(--accent); }
.viewer-wrap { min-width: 0; background: #20272b; border: 1px solid rgba(255,255,255,.12); box-shadow: 0 25px 70px rgba(0,0,0,.32); }
.viewer-toolbar, .model-specs { min-height: 48px; padding: 8px 18px; display: flex; align-items: center; justify-content: space-between; color: #7f878a; font-size: 8px; letter-spacing: .16em; }
.viewer-actions { display: flex; align-items: center; gap: 5px; }
.viewer-toolbar button { background: none; border: 0; color: #a9afb1; font-size: 8px; cursor: pointer; padding: 8px 9px; }
.viewer-toolbar #reset-model { text-decoration: underline; text-underline-offset: 4px; margin-left: 5px; }
.viewer-toolbar .model-mode { border: 1px solid #444c50; text-decoration: none; text-transform: uppercase; letter-spacing: .07em; }
.viewer-toolbar .model-mode.active { color: white; border-color: var(--accent); background: var(--accent); }
.hall-viewport { height: 500px; position: relative; overflow: hidden; cursor: grab; background-color: #1b2226; background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px); background-size: 30px 30px; user-select: none; touch-action: none; }
.hall-viewport:active { cursor: grabbing; }
.hall-viewport::after { content: ""; position: absolute; inset: 0; pointer-events: none; box-shadow: inset 0 0 100px rgba(0,0,0,.5); }
.model-zoom-layer { position: absolute; left: 50%; top: 59%; width: 0; height: 0; perspective: 950px; perspective-origin: 0 0; transform: scale(1); transform-origin: 0 0; transition: transform .12s linear; will-change: transform; }
.hall-model { position: absolute; left: 0; top: 0; width: 0; height: 0; transform-style: preserve-3d; transform: rotateX(-18deg) rotateY(-32deg); transition: transform .08s linear; will-change: transform; }
.hall-model.resetting, .model-zoom-layer.resetting { transition: transform .6s cubic-bezier(.22,.8,.25,1); }
.hall-viewport.interacting .hall-model, .hall-viewport.interacting .model-zoom-layer { transition: none; }
.hall-viewport.interacting .cuboid .face { background-image: none; box-shadow: none; }
.cuboid { position: absolute; left: 0; top: 0; width: calc(var(--w) * 1px); height: calc(var(--h) * 1px); margin-left: calc(var(--w) * -.5px); margin-top: calc(var(--h) * -.5px); transform: translate3d(calc(var(--x) * 1px), calc(var(--y) * -1px), calc(var(--z) * 1px)) rotateX(var(--rx)) rotateY(var(--ry)) rotateZ(var(--rz)); transform-style: preserve-3d; transition: filter .25s, opacity .25s; }
.cuboid .face { position: absolute; background-color: #aeb3b2; background-image: radial-gradient(circle at 18% 25%, rgba(255,255,255,.13) 0 1px, transparent 1.5px), radial-gradient(circle at 72% 68%, rgba(40,48,50,.12) 0 1px, transparent 1.6px), linear-gradient(115deg, rgba(255,255,255,.08), transparent 42%, rgba(40,45,47,.1)); background-size: 19px 23px, 27px 31px, 100% 100%; border: 1px solid rgba(255,255,255,.2); box-shadow: inset 0 0 7px rgba(25,30,32,.08); backface-visibility: visible; }
.cuboid .front, .cuboid .back { width: 100%; height: 100%; }
.cuboid .front { transform: translateZ(calc(var(--d) * .5px)); }
.cuboid .back { transform: rotateY(180deg) translateZ(calc(var(--d) * .5px)); background: #8e9494; }
.cuboid .left, .cuboid .right { width: calc(var(--d) * 1px); height: 100%; left: 50%; margin-left: calc(var(--d) * -.5px); }
.cuboid .left { transform: rotateY(-90deg) translateZ(calc(var(--w) * .5px)); background: #858b8b; }
.cuboid .right { transform: rotateY(90deg) translateZ(calc(var(--w) * .5px)); background: #989e9d; }
.cuboid .top, .cuboid .bottom { width: 100%; height: calc(var(--d) * 1px); top: 50%; margin-top: calc(var(--d) * -.5px); }
.cuboid .top { transform: rotateX(90deg) translateZ(calc(var(--h) * .5px)); background: #c6cac9; }
.cuboid .bottom { transform: rotateX(-90deg) translateZ(calc(var(--h) * .5px)); background: #747a7a; }
.cuboid.purlins .face { background-color: #70787b; background-image: linear-gradient(90deg, rgba(255,255,255,.12), transparent 25%, rgba(0,0,0,.14)); }
.cuboid.foundations .face { background-color: #666d6f; background-image: radial-gradient(circle at 30% 40%, rgba(255,255,255,.12) 0 1px, transparent 1.5px), linear-gradient(135deg, rgba(255,255,255,.06), rgba(0,0,0,.12)); background-size: 17px 21px, 100% 100%; }
.cuboid.connections .face { background-color: #4c5559; background-image: linear-gradient(135deg, rgba(255,255,255,.2), transparent 45%, rgba(0,0,0,.25)); border-color: #7d878b; }
.cuboid.bolt .face { background-color: #d06430; background-image: linear-gradient(120deg, rgba(255,255,255,.28), transparent 45%, rgba(0,0,0,.22)); }
.cuboid.envelope { opacity: 0; visibility: hidden; transition: opacity .55s ease, visibility .55s ease, filter .2s; }
.hall-model[data-mode="complete"] .cuboid.columns .face,
.hall-model[data-mode="complete"] .cuboid.beams .face,
.hall-model[data-mode="complete"] .cuboid.purlins .face,
.hall-model[data-mode="complete"] .cuboid.connections .face { opacity: .28; }
.hall-model[data-mode="complete"] .cuboid.foundations .face { opacity: .14; }
.hall-model[data-mode="complete"] .cuboid.envelope { opacity: 1; visibility: visible; }
.cuboid.facade .face { background-color: #aeb4b5; background-image: repeating-linear-gradient(0deg, rgba(45,52,55,.2) 0 1px, transparent 1px 22px), linear-gradient(105deg, rgba(255,255,255,.18), transparent 45%, rgba(38,44,46,.12)); border-color: rgba(255,255,255,.28); }
.cuboid.roof .face { background-color: #d3d6d5; background-image: repeating-linear-gradient(90deg, rgba(67,75,78,.2) 0 1px, transparent 1px 18px), linear-gradient(rgba(255,255,255,.2), rgba(0,0,0,.08)); }
.cuboid.door .face { background-color: #293136; background-image: repeating-linear-gradient(0deg, rgba(255,255,255,.1) 0 1px, transparent 1px 10px), linear-gradient(90deg, rgba(255,255,255,.08), transparent 45%, rgba(0,0,0,.2)); }
.cuboid.window .face { background-color: #304751; background-image: linear-gradient(115deg, rgba(192,226,239,.38), transparent 35%, rgba(12,28,35,.22)); border-color: rgba(148,196,218,.5); }
.cuboid.skylight .face { background-color: #6f99aa; background-image: linear-gradient(125deg, rgba(220,245,255,.55), rgba(45,79,92,.18)); }
.cuboid.trim .face, .cuboid.gutter .face, .cuboid.door-frame .face { background-color: #343c40; background-image: linear-gradient(90deg, rgba(255,255,255,.18), transparent 45%, rgba(0,0,0,.22)); }
.cuboid.dock-bumper .face { background-color: #dd642e; background-image: repeating-linear-gradient(45deg, rgba(0,0,0,.28) 0 3px, transparent 3px 7px); }
.hall-model[data-highlight] .cuboid:not(.envelope) .face { filter: brightness(.34) saturate(.28) contrast(1.08); }
.hall-model[data-highlight="columns"] .cuboid.columns .face,
.hall-model[data-highlight="beams"] .cuboid.beams .face,
.hall-model[data-highlight="purlins"] .cuboid.purlins .face,
.hall-model[data-highlight="foundations"] .cuboid.foundations .face,
.hall-model[data-highlight="connections"] .cuboid.connections .face { filter: brightness(1.18) sepia(.35) saturate(1.7); border-color: rgba(255,132,78,.9); box-shadow: inset 0 0 6px rgba(255,255,255,.12), 0 0 7px rgba(238,91,34,.7); }
.ground-plane { position: absolute; width: 470px; height: 300px; margin: -150px 0 0 -235px; transform: rotateX(90deg) translateZ(-4px); background: repeating-linear-gradient(0deg, rgba(255,255,255,.065) 0 1px, transparent 1px 40px), repeating-linear-gradient(90deg,rgba(255,255,255,.065) 0 1px,transparent 1px 40px); border: 1px solid rgba(255,255,255,.13); transform-style: preserve-3d; }
.drag-hint { position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%); z-index: 3; color: #80888b; text-transform: uppercase; letter-spacing: .15em; font-size: 8px; pointer-events: none; }
.drag-hint span { color: var(--accent); font-size: 16px; vertical-align: -1px; margin-right: 6px; }
.model-zoom { position: absolute; left: 16px; bottom: 13px; z-index: 5; display: flex; align-items: center; gap: 7px; padding: 5px; background: rgba(20,25,29,.78); border: 1px solid rgba(255,255,255,.13); backdrop-filter: blur(7px); }
.model-zoom button { width: 31px; height: 31px; padding: 0; border: 1px solid #4c5559; background: #252c30; color: white; cursor: pointer; font-size: 18px; line-height: 1; }
.model-zoom button:active { background: var(--accent); border-color: var(--accent); }
.model-zoom span { color: #7f878a; text-transform: uppercase; letter-spacing: .12em; font-size: 7px; }
.axis { position: absolute; bottom: 18px; z-index: 2; font: 600 9px var(--display); color: #596165; }
.axis-x { right: 20px; }.axis-y { right: 38px; bottom: 38px; }
.model-specs { justify-content: flex-start; gap: 30px; border-top: 1px solid rgba(255,255,255,.08); }
.model-specs span { color: #777f82; }
.model-specs b { color: var(--accent); margin-right: 4px; }

.about { padding: 0; display: grid; grid-template-columns: 1fr 1fr; background: var(--ink); color: white; min-height: 700px; }
.about-visual { position: relative; overflow: hidden; min-height: 660px; display: flex; align-items: center; justify-content: center; background: #ccd0d0; }
.about-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255,255,255,.3), transparent 40%, rgba(20,25,29,.2)); }
.blueprint-lines { position: absolute; inset: 0; opacity: .2; background-image: linear-gradient(#687075 1px, transparent 1px), linear-gradient(90deg,#687075 1px,transparent 1px); background-size: 48px 48px; }
.concrete-frame { width: 58%; height: 64%; border: 42px solid #aaaeae; box-shadow: 20px 25px 38px rgba(0,0,0,.24), inset 10px 10px 20px rgba(0,0,0,.2); transform: perspective(700px) rotateY(-8deg); display: flex; align-items: center; justify-content: center; }
.concrete-frame span { font: 800 90px var(--display); color: rgba(20,25,29,.15); letter-spacing: .08em; }
.about-visual > p { position: absolute; left: 40px; bottom: 25px; z-index: 2; color: #4f5659; text-transform: uppercase; letter-spacing: .2em; font-size: 9px; }
.about-copy { padding: 100px clamp(50px, 7vw, 120px); display: flex; flex-direction: column; justify-content: center; }
.about-copy h2 { margin-bottom: 35px; }
.about-copy > p:not(.eyebrow) { color: #a7acae; line-height: 1.8; font-size: 14px; max-width: 560px; }
.about-values { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid rgba(255,255,255,.15); margin-top: 38px; padding-top: 28px; gap: 15px; }
.about-values div { display: flex; gap: 13px; align-items: flex-start; }
.about-values strong { color: var(--accent); font: 600 12px var(--display); }
.about-values span { font: 600 13px/1.3 var(--display); text-transform: uppercase; color: #cdd0d1; }

.projects { background: #e8e7e2; }
.project-showcase { display: grid; grid-template-columns: 1.5fr .6fr; min-height: 500px; background: var(--ink); color: white; }
.project-image { background: linear-gradient(90deg, transparent 65%, rgba(20,25,29,.65)), url("assets/rlh-hero.png") center/cover no-repeat; }
.project-meta { padding: 58px 45px; display: flex; flex-direction: column; justify-content: center; }
.project-meta > span { color: var(--accent); text-transform: uppercase; font-size: 9px; font-weight: 700; letter-spacing: .18em; }
.project-meta h3 { font: 600 35px/1.05 var(--display); text-transform: uppercase; margin: 18px 0 35px; }
.project-meta dl { margin: 0 0 38px; }
.project-meta dl div { padding: 13px 0; border-top: 1px solid rgba(255,255,255,.15); display: flex; justify-content: space-between; gap: 15px; font-size: 10px; }
.project-meta dt { color: #777f83; }
.project-meta dd { margin: 0; text-align: right; }
.project-meta a { color: var(--accent); font-size: 11px; font-weight: 700; display: flex; justify-content: space-between; text-transform: uppercase; }

.project-slider { position: relative; height: clamp(480px, 55vw, 670px); padding: 14px 14px 72px; background: #f7f6f2; border: 1px solid #c8c8c2; box-shadow: 0 24px 60px rgba(24,29,32,.12); overflow: hidden; }
.project-card { position: absolute; inset: 14px 14px 72px; opacity: 0; visibility: hidden; transform: translateX(28px); transition: opacity .65s ease, transform .65s ease, visibility .65s; overflow: hidden; background: var(--ink); }
.project-card.active { opacity: 1; visibility: visible; transform: none; z-index: 2; }
.project-photo { display: block; width: 100%; height: 100%; border: 0; padding: 0; cursor: zoom-in; background: #252b2f; overflow: hidden; }
.project-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(10,14,16,.82) 0%, rgba(10,14,16,.12) 43%, transparent 65%); pointer-events: none; }
.project-photo img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; transition: transform 6s ease; }
.project-card.active .project-photo img { transform: scale(1.035); }
.project-photo > span { position: absolute; z-index: 3; right: 22px; top: 22px; padding: 11px 14px; color: white; background: rgba(20,25,29,.76); backdrop-filter: blur(8px); text-transform: uppercase; letter-spacing: .12em; font-size: 8px; pointer-events: none; }
.project-photo > span b { color: var(--accent); font-size: 13px; margin-left: 8px; }
.project-caption { position: absolute; z-index: 3; left: 0; right: 0; bottom: 0; padding: 70px 36px 30px; display: flex; align-items: end; justify-content: space-between; gap: 30px; color: white; pointer-events: none; }
.project-caption small { color: var(--accent); text-transform: uppercase; letter-spacing: .17em; font-size: 9px; font-weight: 700; }
.project-caption h3 { margin: 9px 0 0; font: 600 clamp(27px, 3.2vw, 44px)/1 var(--display); text-transform: uppercase; }
.project-caption p { margin: 0; color: rgba(255,255,255,.65); text-transform: uppercase; letter-spacing: .1em; font-size: 8px; }
.slider-controls { position: absolute; z-index: 5; left: 14px; right: 14px; bottom: 0; height: 72px; display: grid; grid-template-columns: 48px 1fr 48px; align-items: center; }
.slider-arrow { width: 38px; height: 38px; justify-self: center; border: 1px solid #c7c7c1; color: var(--ink); background: transparent; cursor: pointer; font-size: 18px; transition: background .2s, color .2s; }
.slider-arrow:hover { background: var(--ink); color: white; }
.slider-dots { display: flex; justify-content: center; gap: 9px; }
.slider-dots button { width: 24px; height: 3px; padding: 0; border: 0; background: #c7c7c1; cursor: pointer; transition: width .25s, background .25s; }
.slider-dots button.active { width: 48px; background: var(--accent); }
.slider-progress { position: absolute; z-index: 6; bottom: 70px; left: 14px; right: 14px; height: 2px; background: rgba(255,255,255,.18); }
.slider-progress i { display: block; width: 0; height: 100%; background: var(--accent); }
.project-slider.playing .slider-progress i { animation: slideProgress 5.5s linear forwards; }
@keyframes slideProgress { from { width: 0; } to { width: 100%; } }
.portfolio-note { max-width: 700px; margin: 25px auto 0; text-align: center; color: #7c8285; font-size: 9px; line-height: 1.6; }

.video-stories { background: #111719; color: white; overflow: hidden; }
.video-head .eyebrow, .video-head h2 { color: white; }
.video-head > p { color: #9ba2a5; }
.video-carousel { position: relative; height: clamp(520px, 66vw, 710px); max-height: 78vh; min-height: 520px; overflow: hidden; background: #080c0e; isolation: isolate; }
.video-carousel::before { content: "RLH / FILM"; position: absolute; z-index: 8; top: 25px; right: 27px; color: rgba(255,255,255,.72); font: 700 8px var(--body); letter-spacing: .2em; pointer-events: none; }
.video-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transform: scale(1.018); transition: opacity .65s ease, transform 1s ease, visibility 0s linear .65s; }
.video-slide.active { opacity: 1; visibility: visible; transform: scale(1); transition: opacity .65s ease, transform 1s ease; }
.video-slide video { width: 100%; height: 100%; display: block; object-fit: cover; background: #090d0f; }
.video-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(5,9,11,.82) 0%, rgba(5,9,11,.2) 58%, rgba(5,9,11,.08)), linear-gradient(0deg, rgba(5,9,11,.78) 0%, transparent 45%); pointer-events: none; }
.video-caption { position: absolute; z-index: 4; left: clamp(25px, 5vw, 72px); bottom: 105px; width: min(560px, 62%); transition: opacity .35s ease, transform .35s ease; }
.video-carousel.is-playing .video-caption { opacity: .18; transform: translateY(8px); }
.video-caption small { color: var(--accent-2); font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: .18em; }
.video-caption h3 { margin: 12px 0 10px; font: 600 clamp(30px, 4vw, 54px)/.98 var(--display); letter-spacing: -.02em; text-transform: uppercase; }
.video-caption p { max-width: 470px; margin: 0; color: #c1c6c7; font-size: 12px; line-height: 1.55; }
.video-big-play { position: absolute; z-index: 10; top: 50%; left: 50%; width: 82px; height: 82px; margin: -41px; border: 1px solid rgba(255,255,255,.5); border-radius: 50%; background: rgba(10,15,17,.34); backdrop-filter: blur(8px); transition: opacity .25s, transform .25s, background .25s; }
.video-big-play:hover { transform: scale(1.07); background: var(--accent); border-color: var(--accent); }
.video-big-play span { display: block; margin: auto; width: 0; height: 0; border-top: 9px solid transparent; border-bottom: 9px solid transparent; border-left: 14px solid white; transform: translateX(2px); }
.video-carousel.is-playing .video-big-play { opacity: 0; transform: scale(.8); pointer-events: none; }
.video-player-bar { position: absolute; z-index: 11; left: 28px; right: 178px; bottom: 22px; height: 46px; display: flex; align-items: center; gap: 13px; color: white; }
.video-control, .video-arrow { flex: 0 0 auto; display: grid; place-items: center; width: 38px; height: 38px; color: white; border: 1px solid rgba(255,255,255,.25); background: rgba(8,12,14,.4); transition: background .2s, border-color .2s; }
.video-control:hover, .video-arrow:hover { background: var(--accent); border-color: var(--accent); }
.play-icon { width: 0; height: 0; border-top: 6px solid transparent; border-bottom: 6px solid transparent; border-left: 9px solid white; }
.video-carousel.is-playing .play-icon { width: 8px; height: 12px; border: 0; border-left: 3px solid white; border-right: 3px solid white; }
.video-mute span { font-size: 19px; transform: rotate(-35deg); }
.video-mute.sound-on span { transform: none; }
.video-timeline { position: relative; flex: 1 1 auto; height: 20px; cursor: pointer; outline: none; }
.video-timeline::before { content: ""; position: absolute; top: 9px; left: 0; right: 0; height: 2px; background: rgba(255,255,255,.3); }
.video-timeline i { position: absolute; top: 9px; left: 0; width: 0%; height: 2px; background: var(--accent-2); pointer-events: none; }
.video-time { min-width: 83px; color: #d8dcdd; font-size: 8px; letter-spacing: .06em; }
.video-carousel-nav { position: absolute; z-index: 12; right: 28px; bottom: 26px; display: flex; align-items: center; gap: 10px; }
.video-dots { display: flex; gap: 6px; }
.video-dots button { width: 18px; height: 3px; padding: 0; border: 0; background: rgba(255,255,255,.3); transition: width .25s, background .25s; }
.video-dots button.active { width: 31px; background: var(--accent-2); }
.video-note { margin: 18px 0 0; color: #747d80; font-size: 8px; line-height: 1.6; letter-spacing: .04em; }

.image-lightbox { width: min(1200px, 94vw); max-width: none; padding: 10px; border: 0; background: #111619; box-shadow: 0 30px 100px rgba(0,0,0,.65); }
.image-lightbox::backdrop { background: rgba(8,11,13,.88); backdrop-filter: blur(8px); }
.image-lightbox img { display: block; width: 100%; max-height: 84vh; object-fit: contain; }
.lightbox-close { position: fixed; right: 25px; top: 20px; width: 42px; height: 42px; z-index: 2; border: 1px solid rgba(255,255,255,.4); border-radius: 50%; color: white; background: rgba(20,25,29,.7); cursor: pointer; font-size: 25px; }

.process { background: var(--paper); }
.process-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; }
.process-grid ol { margin: 0; padding: 0; list-style: none; }
.process-grid li { display: grid; grid-template-columns: 60px 1fr; padding: 22px 0; border-top: 1px solid var(--line); }
.process-grid li > span { color: var(--accent); font: 600 12px var(--display); }
.process-grid h3 { font: 600 23px var(--display); text-transform: uppercase; margin-bottom: 7px; }
.process-grid li p { color: var(--muted); font-size: 12px; margin: 0; }

.contact { background: #20262a; color: white; padding: 110px max(5vw, calc((100vw - 1180px)/2)); display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; }
.contact-copy h2 { margin-bottom: 30px; }
.contact-copy > p:not(.eyebrow) { color: #9da3a5; line-height: 1.8; font-size: 14px; max-width: 430px; }
.contact-direct { margin-top: 38px; display: grid; gap: 20px; }
.contact-direct small, .contact-direct strong { display: block; }
.contact-direct small { color: #737b7e; text-transform: uppercase; letter-spacing: .15em; font-size: 8px; margin-bottom: 7px; }
.contact-direct strong { font: 500 17px/1.45 var(--display); letter-spacing: .02em; }
.contact-direct a strong { color: var(--accent); font-size: 23px; }
.company-data { margin: 30px 0 0; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.12); display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; }
.company-data div { display: flex; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,.06); font-size: 8px; }
.company-data dt { color: #747c7f; }
.company-data dd { margin: 0; color: #b8bcbe; text-align: right; }
.contact-form { align-self: center; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.contact-form label { display: block; text-transform: uppercase; font-size: 9px; letter-spacing: .13em; color: #8e9598; margin-bottom: 27px; }
.contact-form input, .contact-form textarea { display: block; width: 100%; border: 0; border-bottom: 1px solid #51575a; background: transparent; color: white; padding: 12px 0; outline: none; resize: vertical; border-radius: 0; }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--accent); }
.contact-form input::placeholder, .contact-form textarea::placeholder { color: #697074; text-transform: none; letter-spacing: 0; }
.contact-form .btn { margin-top: 10px; }
.form-status { min-height: 22px; color: #b9d4b9; font-size: 12px; margin: 15px 0 0; }

.floating-contact { position: fixed; right: 22px; bottom: 22px; z-index: 40; min-width: 182px; padding: 15px 17px; display: flex; align-items: center; gap: 11px; color: white; background: var(--accent); box-shadow: 0 12px 35px rgba(152,52,14,.3); font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; transition: transform .2s, box-shadow .2s; }
.floating-contact:hover { transform: translateY(-3px); box-shadow: 0 17px 42px rgba(152,52,14,.4); }
.floating-contact.hidden { opacity: 0; transform: translateY(12px); pointer-events: none; }
.floating-contact i { width: 7px; height: 7px; border-radius: 50%; background: white; box-shadow: 0 0 0 5px rgba(255,255,255,.15); }
.floating-contact b { margin-left: auto; font-size: 17px; font-weight: 400; }
.site-footer { padding: 0 5vw; background: #111619; color: #8b9194; }
.footer-main { padding: 68px 0 55px; display: grid; grid-template-columns: 1.5fr .55fr .8fr; gap: 70px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-intro p { margin: 26px 0 0; color: #8c9396; font: 500 18px/1.45 var(--display); text-transform: uppercase; letter-spacing: .03em; }
.footer-column { display: flex; flex-direction: column; align-items: flex-start; gap: 13px; }
.footer-column small { color: var(--accent); text-transform: uppercase; letter-spacing: .18em; font-size: 8px; margin-bottom: 8px; }
.footer-column a { color: #b0b5b7; font-size: 11px; transition: color .2s, transform .2s; }
.footer-column a:hover { color: white; transform: translateX(4px); }
.footer-bottom { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 25px; font-size: 8px; text-transform: uppercase; letter-spacing: .12em; }
.footer-bottom p { margin: 0; }
.footer-bottom a { color: #b5b9bb; }
.footer-brand { color: white; }
.footer-brand .brand-logo { height: 42px; }

.reveal { opacity: 0; transform: translateY(25px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .container { width: min(100% - 40px, 700px); }
  .section { padding: 85px 0; }
  .site-header { height: 72px; padding: 0 20px; }
  .brand-logo { height: 43px; }
  .menu-toggle { display: block; z-index: 2; }
  .main-nav { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; height: 100dvh; padding: 90px 24px 35px; overflow-y: auto; overscroll-behavior: contain; background: var(--ink); display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 32px; font: 600 27px var(--display); text-transform: uppercase; transform: translate3d(100%,0,0); visibility: hidden; pointer-events: none; transition: transform .3s ease, visibility 0s linear .3s; }
  .main-nav.open { transform: translate3d(0,0,0); visibility: visible; pointer-events: auto; transition: transform .3s ease; }
  .nav-cta { font-size: 16px; }
  .menu-toggle.active span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-toggle.active span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .hero { min-height: 690px; height: 100svh; }
  .hero-media { background-position: 59% center; }
  .hero-overlay { background: linear-gradient(90deg, rgba(11,15,18,.94), rgba(11,15,18,.43)), linear-gradient(0deg, rgba(11,15,18,.55), transparent); }
  .hero-copy { width: 100%; margin-top: 0; }
  h1 { font-size: clamp(54px, 15vw, 75px); }
  .hero-lead { font-size: 14px; }
  .hero-index, .hero-stats { display: none; }
  .trust-strip { grid-template-columns: 1fr; }
  .trust-item { min-height: 0; border-right: 0; border-bottom: 1px solid #cdcdc7; padding: 27px 25px; }
  .trust-item:last-child { border-bottom: 0; }
  .section-head { grid-template-columns: 1fr; gap: 25px; margin-bottom: 45px; }
  .services-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 350px; }
  .service-card + .service-card { border-left: 1px solid var(--line); border-top: 0; }
  .lab-grid { grid-template-columns: 1fr; gap: 45px; }
  .hall-viewport { height: 430px; }
  .hall-model, .model-zoom-layer { transition: none; contain: layout style; }
  .cuboid .face { backface-visibility: hidden; box-shadow: none; background-image: none; }
  .cuboid.bolt, .cuboid.window-mullion, .cuboid.dock-bumper { display: none; }
  .hall-viewport.interacting .cuboid.connections,
  .hall-viewport.interacting .cuboid.trim,
  .hall-viewport.interacting .cuboid.door-frame,
  .hall-viewport.interacting .cuboid.skylight,
  .hall-viewport.interacting .cuboid.gutter { visibility: hidden; }
  .hall-model[data-highlight] .cuboid:not(.envelope) .face { filter: brightness(.42) saturate(.35); }
  .hall-model[data-highlight="columns"] .cuboid.columns .face,
  .hall-model[data-highlight="beams"] .cuboid.beams .face,
  .hall-model[data-highlight="purlins"] .cuboid.purlins .face,
  .hall-model[data-highlight="foundations"] .cuboid.foundations .face,
  .hall-model[data-highlight="connections"] .cuboid.connections .face { box-shadow: none; }
  .viewer-toolbar { align-items: flex-start; flex-direction: column; gap: 5px; padding-top: 11px; padding-bottom: 11px; }
  .viewer-actions { width: 100%; }
  .viewer-toolbar #reset-model { margin-left: auto; }
  .about { grid-template-columns: 1fr; }
  .about-visual { min-height: 420px; }
  .concrete-frame { border-width: 30px; }
  .about-copy { padding: 75px 30px; }
  .project-showcase { grid-template-columns: 1fr; }
  .project-image { min-height: 330px; background-position: 68% center; }
  .project-slider { height: 540px; }
  .video-carousel { height: 590px; max-height: none; }
  .video-caption { width: min(560px, 78%); bottom: 118px; }
  .video-player-bar { right: 25px; bottom: 57px; }
  .video-carousel-nav { left: 25px; right: 25px; bottom: 16px; justify-content: flex-end; }
  .video-carousel-nav .video-prev { margin-right: auto; }
  .process-grid { grid-template-columns: 1fr; gap: 50px; }
  .contact { grid-template-columns: 1fr; gap: 55px; padding: 85px 25px; }
}

@media (max-width: 560px) {
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 10px; margin-top: 28px; }
  .hero-copy .eyebrow { margin-bottom: 18px; }
  .section-head h2, .about h2, .process h2, .contact h2 { font-size: 48px; }
  .about-values { grid-template-columns: 1fr; gap: 22px; }
  .project-meta { padding: 45px 28px; }
  .project-slider { height: 450px; padding: 8px 8px 62px; }
  .video-carousel { height: 510px; min-height: 0; }
  .video-carousel::before { top: 17px; right: 17px; }
  .video-caption { left: 20px; bottom: 130px; width: calc(100% - 40px); }
  .video-caption h3 { font-size: 34px; }
  .video-caption p { display: none; }
  .video-big-play { width: 66px; height: 66px; margin: -33px; }
  .video-player-bar { left: 16px; right: 16px; bottom: 58px; gap: 8px; }
  .video-player-bar .video-mute { display: none; }
  .video-time { min-width: 73px; }
  .video-carousel-nav { left: 16px; right: 16px; bottom: 12px; }
  .project-card { inset: 8px 8px 62px; }
  .project-caption { padding: 70px 20px 22px; }
  .project-caption p { display: none; }
  .project-photo > span { top: 14px; right: 14px; }
  .slider-controls { height: 62px; left: 8px; right: 8px; }
  .slider-progress { bottom: 60px; left: 8px; right: 8px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .hall-viewport { height: 350px; }
  .drag-hint { bottom: 58px; width: 100%; text-align: center; }
  .model-zoom { bottom: 11px; }
  .model-specs { gap: 13px; flex-wrap: wrap; height: auto; padding-top: 14px; padding-bottom: 14px; }
  .company-data { grid-template-columns: 1fr; }
  .floating-contact { right: 14px; bottom: 14px; min-width: 165px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 45px 25px; padding: 55px 0 45px; }
  .footer-intro { grid-column: 1 / -1; }
  .footer-bottom { padding: 24px 0; flex-direction: column; align-items: flex-start; gap: 10px; }
  .footer-brand .brand-logo { height: 40px; }
}

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