:root {
  --yellow: #ffbf00;
  --yellow-dark: #d99f00;
  --ink: #272727;
  --muted: #686868;
  --line: #e6e2d8;
  --soft: #f5f4f0;
  --white: #fff;
  --shadow: 0 14px 38px rgba(26, 26, 26, .1);
  --content: 1120px;
  --header-h: 88px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 18px); }
body { margin: 0; color: var(--ink); background: var(--white); font: 400 16px/1.7 Arial, Helvetica, sans-serif; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .18em; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; background: var(--ink); color: #fff; padding: 10px 16px; }
.skip-link:focus { top: 14px; }
.container { width: min(calc(100% - 40px), var(--content)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 50; height: var(--header-h); background: rgba(255,255,255,.97); border-bottom: 1px solid rgba(0,0,0,.06); backdrop-filter: blur(10px); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: block; flex: 0 0 auto; }
.brand img { width: 170px; height: auto; }
.main-nav ul { display: flex; align-items: center; gap: 25px; list-style: none; margin: 0; padding: 0; }
.main-nav a { color: #b18100; font-size: 14px; text-decoration: none; white-space: nowrap; transition: color .2s ease; }
.main-nav a:hover { color: var(--ink); }
.menu-toggle { display: none; border: 0; background: transparent; color: var(--ink); padding: 8px; cursor: pointer; }
.menu-toggle span { display: block; width: 25px; height: 2px; margin: 5px 0; background: currentColor; transition: transform .2s, opacity .2s; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.hero { position: relative; min-height: 420px; height: min(62vh, 660px); overflow: hidden; background: #222; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity .7s ease; }
.hero-slide.is-active { opacity: 1; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.04), rgba(0,0,0,.18)); pointer-events: none; }
.hero-controls { position: absolute; z-index: 3; inset-inline: 0; bottom: 24px; display: flex; align-items: center; justify-content: center; gap: 10px; }
.hero-arrow { position: absolute; z-index: 3; top: 50%; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.7); border-radius: 50%; color: #fff; background: rgba(0,0,0,.23); cursor: pointer; transform: translateY(-50%); }
.hero-arrow:hover { background: rgba(0,0,0,.55); }
.hero-arrow.prev { left: 24px; }
.hero-arrow.next { right: 24px; }
.hero-dot { width: 10px; height: 10px; padding: 0; border: 2px solid #fff; border-radius: 50%; background: transparent; cursor: pointer; }
.hero-dot.is-active { background: var(--yellow); border-color: var(--yellow); }
.section { padding: 92px 0; }
.section.alt { background: var(--soft); }
.section-heading { margin: 0 0 44px; text-align: center; font-size: clamp(28px, 3vw, 38px); line-height: 1.2; letter-spacing: .01em; text-transform: uppercase; }
.section-heading::after { content: ""; display: block; width: 58px; height: 3px; margin: 18px auto 0; background: var(--yellow); }
.lead-copy { max-width: 980px; margin-inline: auto; color: #535353; }
.lead-copy p { margin: 0 0 20px; }
.lead-copy strong { color: var(--ink); font-weight: 700; }
.tabs { border: 1px solid #d8d8d8; background: #fff; }
.tab-list { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid #d8d8d8; background: #efefef; }
.tab-button { min-height: 54px; padding: 12px 18px; border: 0; border-right: 1px solid #d8d8d8; color: #5e5e5e; background: transparent; font-weight: 700; cursor: pointer; }
.tab-button:last-child { border-right: 0; }
.tab-button[aria-selected="true"] { color: var(--ink); background: #fff; box-shadow: inset 0 3px var(--yellow); }
.tab-panel { padding: 32px 38px 38px; }
.tab-panel[hidden] { display: none; }
.service-list { columns: 2; column-gap: 55px; margin: 0; padding-left: 20px; }
.service-list li { break-inside: avoid; margin: 0 0 8px; }
.sector-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 30px; }
.sector-card { border: 1px solid #d9d9d9; background: #fff; }
.sector-card summary { display: flex; align-items: center; justify-content: space-between; min-height: 62px; padding: 14px 20px; color: #575757; cursor: pointer; list-style: none; font-size: 17px; }
.sector-card summary::-webkit-details-marker { display: none; }
.sector-card summary::after { content: "+"; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; color: #fff; background: #c7c7c7; font-weight: 700; line-height: 1; }
.sector-card[open] summary { color: var(--ink); border-bottom: 1px solid #e4e4e4; }
.sector-card[open] summary::after { content: "−"; background: var(--yellow); }
.sector-card ul { margin: 0; padding: 20px 44px 24px; }
.project-slider { position: relative; }
.project-track { display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 40px)/3); gap: 20px; overflow-x: auto; padding: 4px 2px 24px; scroll-behavior: smooth; scroll-snap-type: x mandatory; scrollbar-width: thin; scrollbar-color: var(--yellow) #e7e7e7; }
.project-card { display: flex; flex-direction: column; min-width: 0; overflow: hidden; scroll-snap-align: start; background: #fff; border: 1px solid var(--line); box-shadow: 0 5px 18px rgba(0,0,0,.06); }
.project-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.project-card-body { display: flex; flex-direction: column; flex: 1; padding: 23px; }
.project-card h3 { margin: 0 0 10px; font-size: 20px; line-height: 1.3; }
.project-card p { margin: 0 0 20px; color: var(--muted); font-size: 14px; line-height: 1.55; }
.project-link { display: inline-flex; align-items: center; gap: 8px; width: fit-content; margin-top: auto; color: #6e5200; font-weight: 700; text-decoration: none; }
.project-link::after { content: "→"; transition: transform .2s; }
.project-link:hover::after { transform: translateX(4px); }
.carousel-controls { display: flex; justify-content: center; gap: 10px; margin-top: 20px; }
.carousel-button { width: 44px; height: 44px; border: 1px solid #bdbdbd; border-radius: 50%; color: var(--ink); background: #fff; cursor: pointer; }
.carousel-button:hover { border-color: var(--yellow-dark); background: var(--yellow); }
.client-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); align-items: center; gap: 32px 28px; }
.client-logo { display: grid; place-items: center; min-height: 72px; padding: 8px; }
.client-logo img { max-width: 100%; max-height: 65px; width: auto; filter: saturate(.92); }
.contact { text-align: center; }
.contact-name { margin: 0 0 18px; font-size: clamp(20px, 2.3vw, 27px); font-weight: 400; }
.contact-details { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 22px; color: #505050; }
.contact-details a { color: #6d5100; font-weight: 700; }
.site-footer { padding: 27px 0; color: #a9a9a9; background: #181818; font-size: 14px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; }
.site-footer a { color: #d6d6d6; }
.project-hero { position: relative; display: grid; min-height: 440px; place-items: end start; overflow: hidden; background: #222; }
.project-hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .78; }
.project-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.08) 20%, rgba(0,0,0,.76)); }
.project-hero-content { position: relative; z-index: 2; width: min(calc(100% - 40px), var(--content)); margin: 0 auto 52px; color: #fff; }
.eyebrow { margin: 0 0 10px; color: var(--yellow); font-size: 13px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.project-hero h1 { max-width: 850px; margin: 0; font-size: clamp(34px, 5vw, 62px); line-height: 1.08; text-wrap: balance; }
.project-copy { max-width: 880px; margin: 0 auto 54px; font-size: 18px; color: #454545; }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.gallery-button { position: relative; overflow: hidden; min-height: 230px; padding: 0; border: 0; background: #eee; cursor: zoom-in; }
.gallery-button img { width: 100%; height: 100%; aspect-ratio: 4/3; object-fit: cover; transition: transform .35s ease; }
.gallery-button:hover img { transform: scale(1.035); }
.back-row { margin-top: 46px; text-align: center; }
.back-link { display: inline-flex; align-items: center; gap: 9px; padding: 13px 22px; border: 1px solid var(--yellow-dark); color: #614900; background: #fff; text-decoration: none; font-weight: 700; }
.back-link:hover { background: var(--yellow); color: #222; }
.legal { max-width: 820px; }
.legal h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.1; }
.legal h2 { margin-top: 40px; }
.notice { padding: 18px 20px; border-left: 4px solid var(--yellow); background: #fff9e3; }
.lightbox { width: min(94vw, 1180px); max-width: none; padding: 0; border: 0; background: transparent; overflow: visible; }
.lightbox::backdrop { background: rgba(0,0,0,.9); }
.lightbox figure { margin: 0; }
.lightbox img { max-width: 100%; max-height: 84vh; margin: auto; object-fit: contain; }
.lightbox figcaption { margin-top: 9px; color: #fff; text-align: center; }
.lightbox-close, .lightbox-nav { position: fixed; z-index: 2; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.5); border-radius: 50%; color: #fff; background: rgba(0,0,0,.45); cursor: pointer; }
.lightbox-close { top: 22px; right: 24px; width: 46px; height: 46px; font-size: 25px; }
.lightbox-nav { top: 50%; width: 50px; height: 50px; transform: translateY(-50%); }
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }
@media (max-width: 980px) {
  :root { --header-h: 76px; }
  .brand img { width: 145px; }
  .menu-toggle { display: block; }
  .main-nav { position: absolute; left: 0; right: 0; top: 100%; display: none; background: #fff; border-top: 1px solid #eee; box-shadow: var(--shadow); }
  .main-nav.is-open { display: block; }
  .main-nav ul { align-items: stretch; flex-direction: column; gap: 0; padding: 10px 20px 18px; }
  .main-nav a { display: block; padding: 10px 4px; font-size: 15px; }
  .hero { min-height: 390px; height: 54vh; }
  .project-track { grid-auto-columns: calc((100% - 20px)/2); }
  .client-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 720px) {
  .container { width: min(calc(100% - 30px), var(--content)); }
  .section { padding: 67px 0; }
  .section-heading { margin-bottom: 32px; }
  .hero { min-height: 360px; height: 52vh; }
  .hero-arrow { width: 40px; height: 40px; }
  .hero-arrow.prev { left: 12px; }
  .hero-arrow.next { right: 12px; }
  .tab-list { display: flex; overflow-x: auto; }
  .tab-button { min-width: max-content; flex: 1 0 auto; }
  .tab-panel { padding: 25px 22px 29px; }
  .service-list { columns: 1; }
  .sector-grid { grid-template-columns: 1fr; }
  .project-track { grid-auto-columns: 88%; }
  .client-grid { grid-template-columns: repeat(3, 1fr); gap: 22px 16px; }
  .contact-details { flex-direction: column; }
  .footer-inner { justify-content: center; text-align: center; }
  .project-hero { min-height: 390px; }
  .project-hero-content { margin-bottom: 36px; }
  .project-copy { font-size: 16px; }
  .gallery { grid-template-columns: 1fr 1fr; gap: 8px; }
  .gallery-button { min-height: 150px; }
  .lightbox-nav { top: auto; bottom: 24px; transform: none; }
}
@media (max-width: 440px) {
  .client-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: 1fr; }
  .gallery-button { min-height: 220px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}