:root {
  --blue-950: #071b31;
  --blue-900: #0a2745;
  --blue-800: #0f3b61;
  --blue-700: #145987;
  --cyan-500: #31a8d9;
  --steel-100: #eef4f8;
  --steel-200: #dce8ef;
  --steel-700: #4f6474;
  --text: #132333;
  --white: #ffffff;
  --shadow: 0 20px 55px rgba(7, 27, 49, 0.14);
  --radius: 8px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background: var(--white);
}

body.nav-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

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

h1,
h2,
h3 {
  line-height: 1.1;
}

h1 {
  max-width: 920px;
  margin-bottom: 24px;
  font-size: clamp(2.7rem, 6vw, 5.8rem);
  letter-spacing: 0;
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(2rem, 4vw, 3.35rem);
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.25rem;
}

input,
textarea,
button {
  font: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 82px;
  padding: 14px max(20px, calc((100vw - var(--container)) / 2));
  color: var(--white);
  transition: background 180ms ease, box-shadow 180ms ease, min-height 180ms ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  min-height: 72px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 30px rgba(7, 27, 49, 0.12);
  backdrop-filter: blur(16px);
}

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

.brand img {
  width: 190px;
  max-height: 62px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.site-header.is-scrolled .brand img,
.site-header.is-open .brand img {
  filter: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.9rem;
  font-weight: 700;
}

.site-nav a {
  padding-block: 8px;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-color: var(--cyan-500);
}

.nav-toggle {
  display: none;
}

.section {
  scroll-margin-top: 82px;
  padding-block: 110px;
}

.section-muted {
  background: var(--steel-100);
}

.section-dark {
  color: var(--white);
  background: var(--blue-950);
}

.section-blue {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue-950), var(--blue-800));
}

.eyebrow {
  margin-bottom: 14px;
  color: var(--cyan-500);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero {
  position: relative;
  display: grid;
  min-height: 94vh;
  overflow: hidden;
  align-items: end;
  padding: 150px 0 90px;
}

.hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(7, 27, 49, 0.92), rgba(7, 27, 49, 0.55) 58%, rgba(7, 27, 49, 0.18)),
    linear-gradient(0deg, rgba(7, 27, 49, 0.78), transparent 45%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1.35fr 0.8fr;
  grid-template-rows: 1fr 1fr;
  gap: 5px;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-bg img:first-child {
  grid-row: 1 / 3;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.hero-text {
  max-width: 650px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 800;
  cursor: pointer;
}

.button-primary {
  color: var(--blue-950);
  background: var(--cyan-500);
}

.button-secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.1);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-points li {
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius);
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.08);
}

.split,
.section-head,
.services-layout,
.contact-layout,
.why-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(34px, 6vw, 80px);
  align-items: center;
}

.section-copy p,
.section-head p {
  max-width: 680px;
  color: var(--steel-700);
  font-size: 1.05rem;
}

.section-blue .section-copy p,
.section-dark .section-copy p {
  color: rgba(255, 255, 255, 0.82);
}

.feature-stack {
  display: grid;
  gap: 16px;
}

.feature-stack article {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 20px;
  align-items: center;
  padding: 18px;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.feature-stack img {
  width: 96px;
  aspect-ratio: 1;
  object-fit: contain;
}

.feature-stack h3 {
  margin: 0;
}

.why-grid {
  margin-top: 74px;
  padding-top: 56px;
  border-top: 1px solid var(--steel-200);
}

.check-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 26px;
  font-weight: 700;
}

.check-list li::before {
  position: absolute;
  top: 0.68em;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  content: "";
  background: var(--cyan-500);
}

.section-head {
  align-items: end;
  margin-bottom: 44px;
}

.turbine-intro {
  margin-bottom: 28px;
}

.turbine-intro img {
  width: 100%;
  max-height: none;
  border-radius: var(--radius);
  object-fit: contain;
  background: var(--white);
  box-shadow: var(--shadow);
}

.card-grid {
  display: grid;
  gap: 24px;
}

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

.image-card {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.image-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.image-card div,
.image-card.compact h3 {
  padding: 24px;
}

.image-card p {
  color: var(--steel-700);
}

.card-lead {
  color: var(--blue-800);
  font-weight: 800;
}

.services-layout {
  grid-template-columns: 1fr;
  gap: 34px;
  align-items: stretch;
}

.service-media {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.service-media img {
  width: 100%;
  height: clamp(260px, 28vw, 390px);
  border-radius: var(--radius);
  object-fit: cover;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.service-list article {
  display: flex;
  min-height: 230px;
  flex-direction: column;
  padding: 24px 20px 22px;
  border: 1px solid var(--steel-200);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 12px 32px rgba(7, 27, 49, 0.08);
}

.service-list span {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  color: var(--blue-950);
  font-size: 0.9rem;
  font-weight: 900;
  background: var(--cyan-500);
}

.service-list h3 {
  margin: 22px 0 12px;
  font-size: 1.12rem;
}

.service-list p {
  margin-bottom: 0;
  color: var(--steel-700);
  font-size: 0.98rem;
  line-height: 1.55;
}

.photo-mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.photo-mosaic img {
  width: 100%;
  height: 100%;
  min-height: 230px;
  border-radius: var(--radius);
  object-fit: cover;
}

.photo-mosaic img:first-child {
  grid-row: span 2;
}

.world-map {
  width: 100%;
  max-height: 620px;
  border-radius: var(--radius);
  object-fit: contain;
  background: var(--white);
  box-shadow: var(--shadow);
}

.contact {
  position: relative;
  overflow: hidden;
}

.contact::before {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(7, 27, 49, 0.93), rgba(7, 27, 49, 0.74));
  z-index: 1;
}

.contact-bg {
  position: absolute;
  inset: 0;
  background-image: url("../img/contact-background.jpg");
  background-size: cover;
  background-position: center;
}

.contact-layout {
  position: relative;
  z-index: 2;
}

.contact-direct {
  display: grid;
  gap: 10px;
  margin-top: 30px;
  font-size: 1.1rem;
  font-weight: 800;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 4vw, 34px);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--white);
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 7px;
  font-weight: 800;
}

.form-website {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--steel-200);
  border-radius: var(--radius);
  padding: 11px 12px;
  color: var(--text);
  background: var(--white);
}

.contact-form textarea {
  resize: vertical;
}

.privacy {
  grid-template-columns: 20px 1fr;
  align-items: start;
  font-weight: 700;
}

.privacy input {
  min-height: 20px;
  margin-top: 4px;
}

.site-footer {
  padding-block: 64px 24px;
  color: rgba(255, 255, 255, 0.78);
  background: var(--blue-950);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 1fr 1fr;
  gap: 34px;
}

.footer-logo {
  width: 200px;
  margin-bottom: 20px;
}

.site-footer h2 {
  margin-bottom: 14px;
  color: var(--white);
  font-size: 1rem;
}

.site-footer a,
.site-footer span {
  display: block;
  margin-bottom: 8px;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--cyan-500);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.legal-header {
  position: sticky;
  color: var(--text);
}

.legal-header .brand img {
  filter: none;
}

.legal-nav {
  color: var(--text);
}

.legal-page {
  background: var(--steel-100);
}

.legal-content {
  max-width: 900px;
  padding: clamp(28px, 5vw, 56px);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.legal-content h1 {
  margin-bottom: 26px;
  color: var(--blue-950);
  font-size: clamp(2.2rem, 5vw, 4.2rem);
}

.legal-content h2 {
  margin: 34px 0 16px;
  color: var(--blue-900);
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.legal-content a:not(.button) {
  color: var(--blue-700);
  font-weight: 800;
}

.legal-updated {
  margin-top: 34px;
  color: var(--steel-700);
  font-weight: 800;
}

.legal-button {
  width: fit-content;
  margin-top: 8px;
}

@media (max-width: 980px) {
  .site-header {
    min-height: 76px;
  }

  .nav-toggle {
    position: relative;
    z-index: 60;
    display: inline-grid;
    width: 46px;
    height: 46px;
    place-items: center;
    border: 1px solid currentColor;
    border-radius: var(--radius);
    color: inherit;
    background: transparent;
  }

  .nav-toggle span:not(.sr-only) {
    display: block;
    width: 22px;
    height: 2px;
    margin-block: -7px;
    background: currentColor;
  }

  .site-nav {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 55;
    display: grid;
    gap: 0;
    padding: 88px 24px 26px;
    color: var(--text);
    background: var(--white);
    box-shadow: 0 18px 45px rgba(7, 27, 49, 0.16);
    transform: translateY(-105%);
    transition: transform 180ms ease;
  }

  .site-nav.is-open {
    transform: translateY(0);
  }

  .site-nav a {
    padding: 14px 0;
    border-bottom: 1px solid var(--steel-200);
    font-size: 1.04rem;
  }

  .hero {
    min-height: 92vh;
    padding-top: 132px;
  }

  .hero-bg {
    grid-template-columns: 1fr;
  }

  .hero-bg img:first-child {
    grid-row: auto;
  }

  .hero-bg img:nth-child(n + 2) {
    display: none;
  }

  .split,
  .section-head,
  .services-layout,
  .contact-layout,
  .why-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: start;
  }

  .card-grid.three,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .service-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .service-list article {
    min-height: 190px;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .site-header {
    padding-inline: 14px;
  }

  .brand img {
    width: 164px;
  }

  .section {
    padding-block: 76px;
  }

  .hero {
    min-height: 88vh;
    padding-bottom: 64px;
  }

  .hero-content {
    width: min(calc(100% - 28px), var(--container));
  }

  .hero-actions,
  .hero-points {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .feature-stack article,
  .service-list article {
    grid-template-columns: 1fr;
  }

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

  .service-media img {
    height: 240px;
  }

  .service-list article {
    min-height: 0;
  }

  .feature-stack img {
    width: 76px;
  }

  .check-list,
  .card-grid.three,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .photo-mosaic {
    grid-template-columns: 1fr;
  }

  .photo-mosaic img:first-child {
    grid-row: auto;
  }

  .footer-bottom {
    display: grid;
  }
}