:root {
  --teal: #1cbac8;
  --teal-dark: #078c99;
  --ink: #25272a;
  --muted: #667079;
  --line: #e4e8ea;
  --soft: #f5f7f8;
  --white: #ffffff;
  --max: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Open Sans", "Segoe UI", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

img { max-width: 100%; }
a { color: inherit; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: .75rem 1rem;
  background: var(--ink);
  color: white;
}
.skip-link:focus { top: 1rem; }

.wrap { width: min(calc(100% - 2.5rem), var(--max)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.header-inner {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand { display: inline-flex; align-items: center; }
.brand img { width: 114px; height: auto; display: block; }

.desktop-nav { display: flex; align-items: center; gap: 2rem; }
.desktop-nav a,
.mobile-nav a {
  font-family: Montserrat, "Segoe UI", Arial, sans-serif;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .055em;
  text-decoration: none;
  text-transform: uppercase;
}
.desktop-nav a { padding-block: 2rem; border-top: 3px solid transparent; }
.desktop-nav a:hover,
.desktop-nav a:focus-visible,
.desktop-nav a[aria-current="page"] { color: var(--teal-dark); border-top-color: var(--teal); }

.mobile-nav { display: none; position: relative; }
.mobile-nav summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  padding: .7rem .8rem;
  border: 1px solid var(--line);
}
.mobile-nav summary::-webkit-details-marker { display: none; }
.mobile-nav .mobile-links {
  position: absolute;
  right: 0;
  top: calc(100% + .5rem);
  min-width: 220px;
  padding: .7rem;
  display: grid;
  gap: .2rem;
  background: white;
  border: 1px solid var(--line);
  box-shadow: 0 18px 45px rgba(0,0,0,.12);
}
.mobile-nav a { padding: .65rem .75rem; }

.hero {
  position: relative;
  overflow: hidden;
  min-height: 575px;
  display: grid;
  align-items: center;
  background:
    linear-gradient(115deg, rgba(26,28,31,.98) 0%, rgba(35,37,40,.96) 52%, rgba(26,28,31,.88) 100%);
  color: white;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0 0 0 auto;
  width: 48%;
  background:
    linear-gradient(135deg, transparent 0 48%, rgba(28,186,200,.14) 48% 50%, transparent 50% 100%),
    linear-gradient(45deg, transparent 0 64%, rgba(255,255,255,.055) 64% 66%, transparent 66% 100%);
  background-size: 160px 160px, 220px 220px;
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 830px; padding-block: 7rem; }
.eyebrow {
  margin: 0 0 1rem;
  color: var(--teal);
  font-family: Montserrat, "Segoe UI", Arial, sans-serif;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}
h1, h2, h3, h4 {
  margin-top: 0;
  font-family: Montserrat, "Segoe UI", Arial, sans-serif;
  line-height: 1.18;
}
h1 { margin-bottom: 1.5rem; font-size: clamp(2.55rem, 6vw, 4.9rem); letter-spacing: -.045em; }
h2 { margin-bottom: 1.15rem; font-size: clamp(2rem, 4vw, 3.25rem); letter-spacing: -.035em; }
h3 { margin-bottom: .7rem; font-size: 1.3rem; }
.hero .lead { max-width: 715px; margin: 0 0 2rem; color: #e1e5e7; font-size: clamp(1.1rem, 2vw, 1.35rem); }
.accent { color: var(--teal); }

.actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .75rem 1.2rem;
  border: 2px solid var(--teal);
  background: var(--teal);
  color: #102326;
  font-family: Montserrat, "Segoe UI", Arial, sans-serif;
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .045em;
  text-decoration: none;
  text-transform: uppercase;
}
.button:hover, .button:focus-visible { background: #63dce5; border-color: #63dce5; }
.button.secondary { color: white; background: transparent; border-color: rgba(255,255,255,.52); }
.button.secondary:hover, .button.secondary:focus-visible { border-color: white; background: white; color: var(--ink); }

.section { padding-block: clamp(4.5rem, 8vw, 7.5rem); }
.section.soft { background: var(--soft); }
.section.dark { color: white; background: var(--ink); }
.section-heading { max-width: 820px; margin-bottom: 2.7rem; }
.section-heading p:last-child { margin-bottom: 0; color: var(--muted); font-size: 1.1rem; }
.dark .section-heading p:last-child { color: #c8ced2; }

.grid { display: grid; gap: 1.5rem; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.four { grid-template-columns: repeat(4, 1fr); }
.grid.two { grid-template-columns: repeat(2, 1fr); }

.card {
  padding: 2rem;
  background: white;
  border: 1px solid var(--line);
  border-top: 4px solid var(--teal);
}
.card p:last-child { margin-bottom: 0; color: var(--muted); }
.number {
  display: block;
  margin-bottom: 1.2rem;
  color: var(--teal-dark);
  font-family: Montserrat, "Segoe UI", Arial, sans-serif;
  font-size: .83rem;
  font-weight: 800;
  letter-spacing: .08em;
}

.service-grid { border-top: 1px solid #444a4e; border-left: 1px solid #444a4e; }
.service-grid-single { grid-template-columns: minmax(0, 1fr); max-width: 560px; }
.service {
  min-height: 220px;
  padding: 2rem;
  border-right: 1px solid #444a4e;
  border-bottom: 1px solid #444a4e;
}
.service p { margin-bottom: 0; color: #c9ced2; }

.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.project {
  padding: 2rem 2rem 2rem 0;
  border-bottom: 1px solid var(--line);
}
.project:nth-child(even) { padding-left: 2rem; border-left: 1px solid var(--line); }
.project-clients-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(280px, .75fr);
  gap: clamp(3rem, 8vw, 7rem);
  align-items: start;
}
.project-clients-layout h2 { margin-bottom: 2rem; font-size: clamp(1.8rem, 3vw, 2.6rem); }
.project-list { border-top: 1px solid var(--line); }
.project-list .project { padding: 1.5rem 0; border-left: 0; }
.project-list .project h3 { margin-bottom: 0; }
.clients { min-width: 0; }
.client-logos { display: grid; gap: 1rem; }
.client-logo {
  min-height: 118px;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  border: 1px solid var(--line);
  background: var(--white);
}
.client-logo img { width: 100%; max-width: 220px; height: 72px; display: block; object-fit: contain; }
.quote-band { background: var(--teal); color: #102629; }
.quote-band .wrap { padding-block: 4rem; display: grid; grid-template-columns: 1.4fr .6fr; align-items: center; gap: 3rem; }
.quote-band h2 { margin-bottom: .5rem; }
.quote-band p { margin: 0; font-size: 1.12rem; }
.quote-band .button { justify-self: end; background: var(--ink); border-color: var(--ink); color: white; }

.page-hero { padding-block: 5.5rem; background: var(--soft); border-bottom: 1px solid var(--line); }
.page-hero h1 { margin-bottom: 1rem; font-size: clamp(2.5rem, 5vw, 4.4rem); }
.page-hero p { max-width: 760px; margin: 0; color: var(--muted); font-size: 1.18rem; }

.split { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(2.5rem, 7vw, 7rem); align-items: start; }
.kicker { color: var(--teal-dark); font-weight: 800; letter-spacing: .07em; text-transform: uppercase; font-size: .82rem; }
.check-list { margin: 1.5rem 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding: .6rem 0 .6rem 1.7rem; border-bottom: 1px solid var(--line); }
.check-list li::before { content: ""; position: absolute; left: 0; top: 1.15rem; width: 9px; height: 9px; background: var(--teal); }

.steps { counter-reset: step; }
.step { position: relative; padding: 0 0 2.5rem 4rem; }
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  left: 0;
  top: 0;
  color: var(--teal-dark);
  font-family: Montserrat, "Segoe UI", Arial, sans-serif;
  font-weight: 800;
}
.step:not(:last-child)::after { content: ""; position: absolute; left: .9rem; top: 2rem; bottom: .5rem; width: 1px; background: var(--line); }

.vacancy { margin-bottom: 1.25rem; border: 1px solid var(--line); background: white; }
.vacancy summary {
  cursor: pointer;
  list-style: none;
  padding: 1.5rem 1.7rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: Montserrat, "Segoe UI", Arial, sans-serif;
  font-weight: 800;
}
.vacancy summary::-webkit-details-marker { display: none; }
.vacancy summary::after { content: "+"; color: var(--teal-dark); font-size: 1.5rem; }
.vacancy[open] summary::after { content: "−"; }
.vacancy-content { padding: 0 1.7rem 1.8rem; max-width: 900px; }
.meta { color: var(--teal-dark); font-weight: 700; }

.contact-list { margin: 0; padding: 0; list-style: none; }
.contact-list li { padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.contact-list span { display: block; color: var(--muted); font-size: .88rem; text-transform: uppercase; letter-spacing: .07em; }
.contact-list a { color: var(--teal-dark); font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 3px; }

.site-footer { background: #1e2022; color: white; }
.footer-main { padding-block: 4rem; display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 3rem; }
.footer-main h2 { font-size: 1rem; letter-spacing: .06em; text-transform: uppercase; }
.footer-main p, .footer-main li { color: #bfc5c8; }
.footer-main ul { margin: 0; padding: 0; list-style: none; }
.footer-main a { text-decoration: none; }
.footer-main a:hover, .footer-main a:focus-visible { color: var(--teal); }
.footer-bottom { padding-block: 1.2rem; border-top: 1px solid #3b3f42; color: #aeb4b7; font-size: .9rem; }

@media (max-width: 900px) {
  .desktop-nav { display: none; }
  .mobile-nav { display: block; }
  .grid.three, .grid.four { grid-template-columns: repeat(2, 1fr); }
  .split, .project-clients-layout, .quote-band .wrap { grid-template-columns: 1fr; }
  .quote-band .button { justify-self: start; }
  .footer-main { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { width: min(calc(100% - 1.6rem), var(--max)); }
  .header-inner { min-height: 76px; }
  .brand img { width: 94px; }
  .hero { min-height: 520px; }
  .hero-content { padding-block: 5rem; }
  .grid.two, .grid.three, .grid.four, .project-grid, .footer-main { grid-template-columns: 1fr; }
  .project, .project:nth-child(even) { padding: 1.5rem 0; border-left: 0; }
  .service { min-height: auto; }
}

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