:root {
  --ink: #122334;
  --muted: #5e6876;
  --line: #d9dee5;
  --paper: #f5f7f9;
  --white: #ffffff;
  --navy: #00415f;
  --steel: #c9d1d8;
  --copper: #b66a33;
  --copper-dark: #934f24;
  --green: #476b5a;
  --shadow: 0 20px 45px rgba(15, 39, 66, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, Arial, sans-serif;
  line-height: 1.5;
}

body.nav-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 5vw, 64px);
  color: var(--white);
  transition: background 180ms ease, box-shadow 180ms ease, padding 180ms ease;
}

.site-header.is-scrolled,
.site-header.nav-active {
  padding-block: 12px;
  background: rgba(0, 65, 95, 0.96);
  box-shadow: 0 10px 30px rgba(10, 20, 32, 0.18);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.brand-logo {
  width: clamp(102px, 12vw, 140px);
  height: auto;
  padding: 7px 9px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 24px rgba(8, 22, 37, 0.16);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 34px);
  font-size: 0.92rem;
  font-weight: 700;
}

.main-nav a {
  position: relative;
  padding-block: 8px;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--copper);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.46);
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 92svh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-media {
  background-image: url("assets/hero-installations.png");
  background-position: center;
  background-size: cover;
  transform: scale(1.02);
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(0, 40, 62, 0.9) 0%, rgba(8, 34, 52, 0.7) 38%, rgba(8, 22, 38, 0.08) 100%),
    linear-gradient(0deg, rgba(8, 22, 38, 0.38), rgba(8, 22, 38, 0.08));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, calc(100% - 36px));
  margin-left: clamp(18px, 6vw, 82px);
  padding-top: 82px;
}

.eyebrow {
  margin: 0 0 14px;
  color: #f1bf87;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow.dark {
  color: var(--copper-dark);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 22px;
  font-size: clamp(3rem, 8vw, 6.4rem);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(2rem, 4vw, 3.45rem);
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.15rem;
  line-height: 1.2;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid transparent;
  font-size: 0.94rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--copper);
  color: var(--white);
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--copper-dark);
}

.button.ghost {
  border-color: rgba(255, 255, 255, 0.55);
  color: var(--white);
}

.button.full {
  width: 100%;
}

.hero-strip {
  position: absolute;
  z-index: 2;
  right: clamp(18px, 5vw, 64px);
  bottom: 0;
  left: clamp(18px, 5vw, 64px);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(0, 65, 95, 0.8);
  backdrop-filter: blur(12px);
}

.hero-strip span {
  min-height: 68px;
  display: flex;
  align-items: center;
  padding: 18px 22px;
  border-right: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.95rem;
  font-weight: 800;
}

.hero-strip span:last-child {
  border-right: 0;
}

.section {
  padding: clamp(70px, 9vw, 120px) 0;
}

.section-inner {
  width: min(1160px, calc(100% - 36px));
  margin: 0 auto;
}

.intro {
  background: var(--white);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  gap: clamp(28px, 5vw, 76px);
  align-items: start;
}

.intro p:not(.eyebrow),
.method-copy p,
.section-heading p {
  color: var(--muted);
  font-size: 1.06rem;
}

.services {
  background: var(--paper);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 40px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  min-height: 300px;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: 0 12px 28px rgba(15, 39, 66, 0.06);
}

.service-icon {
  display: inline-flex;
  margin-bottom: 34px;
  color: var(--copper-dark);
  font-weight: 800;
}

.service-card p,
.segment-list p,
.timeline p,
.metrics span,
.clients-copy p,
.contact-copy p {
  color: var(--muted);
}

.method {
  background: var(--white);
}

.method-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(34px, 6vw, 90px);
}

.method-copy {
  position: sticky;
  top: 112px;
  align-self: start;
}

.timeline {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: item;
}

.timeline li {
  position: relative;
  min-height: 150px;
  padding: 26px 30px 24px 92px;
  border: 1px solid var(--line);
  background: #fbfcfd;
}

.timeline span {
  position: absolute;
  top: 24px;
  left: 28px;
  color: var(--copper-dark);
  font-weight: 800;
}

.timeline strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.metrics {
  padding-block: 0;
  background: var(--navy);
  color: var(--white);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metrics-grid div {
  min-height: 190px;
  padding: 36px 32px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.metrics-grid div:last-child {
  border-right: 0;
}

.metrics strong {
  display: block;
  margin-bottom: 12px;
  font-size: 1.35rem;
}

.metrics span {
  color: rgba(255, 255, 255, 0.72);
}

.segments {
  background: var(--paper);
}

.segment-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.segment-list article {
  min-height: 220px;
  padding: 30px;
  border-left: 4px solid var(--green);
  background: var(--white);
  box-shadow: 0 12px 28px rgba(15, 39, 66, 0.06);
}

.clients {
  background: var(--white);
}

.clients-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(320px, 1.18fr);
  gap: clamp(30px, 6vw, 82px);
  align-items: center;
}

.clients-copy {
  max-width: 520px;
}

.clients-panel {
  margin: 0;
  padding: clamp(18px, 3vw, 32px);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 18px 40px rgba(15, 39, 66, 0.08);
}

.clients-panel img {
  width: 100%;
  height: auto;
}

.contact {
  padding: clamp(70px, 10vw, 126px) 0;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(15, 39, 66, 0.95), rgba(15, 39, 66, 0.88)),
    radial-gradient(circle at 78% 22%, rgba(182, 106, 51, 0.28), transparent 32%),
    var(--navy);
}

.contact-inner {
  width: min(1160px, calc(100% - 36px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 0.8fr);
  gap: clamp(34px, 7vw, 96px);
  align-items: start;
}

.contact-copy h2 {
  color: var(--white);
}

.contact-copy p {
  max-width: 560px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.06rem;
}

address {
  display: grid;
  gap: 12px;
  margin-top: 32px;
  color: rgba(255, 255, 255, 0.78);
  font-style: normal;
}

address strong {
  color: var(--white);
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 30px;
  background: var(--white);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: #303a49;
  font-size: 0.9rem;
  font-weight: 800;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #f9fafb;
  color: var(--ink);
  padding: 13px 14px;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.contact-form textarea {
  min-height: 136px;
  resize: vertical;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--copper);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(182, 106, 51, 0.16);
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 24px clamp(18px, 5vw, 64px);
  background: #081625;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
}

@media (max-width: 980px) {
  .service-grid,
  .segment-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .method-grid,
  .intro-grid,
  .clients-grid,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .method-copy {
    position: static;
  }
}

@media (max-width: 760px) {
  .site-header {
    padding-inline: 18px;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 70px;
    right: 18px;
    left: 18px;
    display: grid;
    gap: 0;
    padding: 12px;
    background: rgba(0, 65, 95, 0.98);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 160ms ease, transform 160ms ease;
  }

  .main-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .main-nav a {
    padding: 16px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .main-nav a:last-child {
    border-bottom: 0;
  }

  .hero {
    min-height: 94svh;
    align-items: end;
  }

  .hero-media {
    background-position: 58% center;
  }

  .hero-shade {
    background:
      linear-gradient(0deg, rgba(0, 40, 62, 0.96) 0%, rgba(0, 52, 78, 0.82) 48%, rgba(8, 22, 38, 0.24) 100%),
      linear-gradient(90deg, rgba(0, 40, 62, 0.78), rgba(8, 22, 38, 0.18));
  }

  .hero-content {
    width: calc(100% - 36px);
    margin: 0 auto;
    padding: 116px 0 170px;
  }

  h1 {
    font-size: clamp(2.7rem, 15vw, 4.8rem);
  }

  .hero-actions {
    display: grid;
  }

  .hero-strip {
    right: 0;
    left: 0;
    grid-template-columns: 1fr;
  }

  .hero-strip span {
    min-height: 45px;
    padding: 11px 18px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  .service-grid,
  .segment-list,
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .metrics-grid div {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .metrics-grid div:last-child {
    border-bottom: 0;
  }

  .timeline li {
    padding-left: 76px;
  }

  .contact-form {
    padding: 22px;
  }
}