:root {
  color-scheme: dark;
  --bg: #101214;
  --panel: #191d20;
  --panel-strong: #22272b;
  --line: rgba(255, 255, 255, 0.11);
  --text: #f5f7f9;
  --muted: #abb4bd;
  --soft: #78828d;
  --red: #e2382a;
  --amber: #f7b731;
  --steel: #9fb1c2;
  --green: #25b76b;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
  padding: 0 clamp(18px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(16, 18, 20, 0.88);
  backdrop-filter: blur(16px);
}

.brand,
nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-weight: 800;
}

.brand span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 2px solid var(--red);
  border-radius: 6px;
  color: var(--amber);
  font-size: 0.84rem;
  font-weight: 900;
}

nav {
  gap: clamp(14px, 3vw, 30px);
  color: #dce2e8;
  font-size: 0.94rem;
  font-weight: 700;
}

nav a:hover {
  color: var(--amber);
}

.hero {
  display: grid;
  align-items: center;
  min-height: calc(100vh - 74px);
  padding: clamp(42px, 8vw, 94px) clamp(18px, 5vw, 64px);
  background:
    linear-gradient(90deg, rgba(16, 18, 20, 0.96) 0%, rgba(16, 18, 20, 0.78) 46%, rgba(16, 18, 20, 0.2) 100%),
    url("https://images.unsplash.com/photo-1486262715619-67b85e0b08d3?auto=format&fit=crop&w=2200&q=84")
      center / cover;
}

.hero__content {
  width: min(720px, 100%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--amber);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(3rem, 7vw, 6.6rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.hero p {
  max-width: 590px;
  margin-bottom: 32px;
  color: #d8dee5;
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 800;
}

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

.button--ghost {
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.07);
  color: white;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.metrics div {
  padding: 24px clamp(18px, 5vw, 64px);
  background: #15181b;
}

.metrics strong,
.metrics span {
  display: block;
}

.metrics strong {
  margin-bottom: 6px;
  font-size: 1.02rem;
}

.metrics span {
  color: var(--muted);
  line-height: 1.45;
}

.section,
.service-band,
.contact {
  padding: clamp(48px, 8vw, 86px) clamp(18px, 5vw, 64px);
}

.section__heading {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: end;
  margin-bottom: 28px;
}

.section__heading h2,
.service-band h2,
.contact h2 {
  max-width: 760px;
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 3.8rem);
  line-height: 1;
  letter-spacing: 0;
}

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

.part-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.part-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}

.part-card div {
  padding: 18px;
}

.part-card h3 {
  margin-bottom: 9px;
  font-size: 1.14rem;
}

.part-card p,
.service-band li {
  color: var(--muted);
  line-height: 1.55;
}

.service-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 42px;
  align-items: start;
  background:
    linear-gradient(135deg, rgba(226, 56, 42, 0.16), transparent 34%),
    var(--panel-strong);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.service-band ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.service-band li {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(16, 18, 20, 0.48);
}

.contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.contact .button {
  flex: 0 0 auto;
}

@media (max-width: 850px) {
  .topbar,
  .contact,
  .section__heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    min-height: 660px;
    background:
      linear-gradient(180deg, rgba(16, 18, 20, 0.95) 0%, rgba(16, 18, 20, 0.62) 100%),
      url("https://images.unsplash.com/photo-1486262715619-67b85e0b08d3?auto=format&fit=crop&w=1400&q=82")
        center / cover;
  }

  .metrics,
  .parts-grid,
  .service-band {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  nav {
    width: 100%;
    justify-content: space-between;
  }

  h1 {
    font-size: 3rem;
  }

  .button,
  .hero__actions {
    width: 100%;
  }
}