:root {
  --ink: #16191d;
  --muted: #66707d;
  --line: #dfe4ea;
  --paper: #ffffff;
  --soft: #f4f6f8;
  --steel: #7b858f;
  --graphite: #2d333a;
  --accent: #c9272f;
  --accent-dark: #991d24;
  --blue: #1e5f86;
  --green: #2c7a62;
  --shadow: 0 18px 45px rgba(22, 25, 29, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}

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

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

.topbar {
  background: var(--graphite);
  color: #eef2f5;
  font-size: 13px;
}

.topbar-inner,
.nav-inner,
.section-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 9px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 46px;
  height: 46px;
  border: 2px solid #c7ccd1;
  background: linear-gradient(145deg, #f8f9fa, #8d949b);
  display: grid;
  place-items: center;
  color: #4b535b;
  font-weight: 900;
}

.brand span:last-child {
  display: block;
  font-size: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: #303842;
  font-weight: 700;
  font-size: 14px;
}

.nav-links a[aria-current="page"] {
  color: var(--accent);
}

.menu-toggle {
  display: none;
  width: 58px;
  height: 44px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  background: var(--accent-dark);
}

.btn.secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn.secondary:hover {
  border-color: var(--ink);
  background: var(--soft);
}

.hero .btn.secondary,
.cta .btn.secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.42);
}

.hero .btn.secondary:hover,
.cta .btn.secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

.hero {
  position: relative;
  min-height: 650px;
  color: #fff;
  display: grid;
  align-items: stretch;
  overflow: hidden;
  background: #1f252b;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(16, 19, 23, 0.92), rgba(16, 19, 23, 0.72) 42%, rgba(16, 19, 23, 0.12) 78%),
    url("assets/compressor-hero.png") center right / cover no-repeat;
}

.hero .section-inner {
  position: relative;
  display: grid;
  align-content: center;
  padding: 90px 0 118px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  text-transform: uppercase;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.hero h1,
.page-hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.03;
}

.hero p {
  max-width: 610px;
  margin: 22px 0 30px;
  color: #d9e0e7;
  font-size: 18px;
}

.hero-actions,
.cta-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-strip {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: min(1180px, calc(100% - 32px));
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.stat {
  padding: 22px;
  border-right: 1px solid var(--line);
}

.stat strong {
  display: block;
  font-size: 26px;
}

.stat span {
  color: var(--muted);
  font-size: 13px;
}

.section {
  padding: 86px 0;
}

.section.soft {
  background: var(--soft);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 34px;
}

.section-head h2,
.split h2,
.cta h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.12;
}

.section-head p,
.split p,
.cta p {
  max-width: 650px;
  color: var(--muted);
  margin: 12px 0 0;
}

.grid {
  display: grid;
  gap: 22px;
}

.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,
.product-card,
.feature {
  background: var(--paper);
  border: 1px solid var(--line);
}

.product-card {
  min-height: 100%;
}

.product-visual {
  height: 190px;
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(30, 95, 134, 0.14), rgba(201, 39, 47, 0.08)),
    #eef2f5;
  overflow: hidden;
}

.machine {
  width: 78%;
  height: 92px;
  background: linear-gradient(145deg, #f8f9fa, #aeb6bd);
  border: 2px solid #737c85;
  position: relative;
  box-shadow: 14px 18px 0 rgba(45, 51, 58, 0.08);
}

.machine::before,
.machine::after {
  content: "";
  position: absolute;
  background: #2d333a;
}

.machine::before {
  width: 68px;
  height: 42px;
  left: 20px;
  top: 24px;
  border-radius: 50%;
  box-shadow: 86px 0 0 #4c555e;
}

.machine::after {
  width: 58px;
  height: 18px;
  right: 22px;
  top: 20px;
  background: repeating-linear-gradient(90deg, #444c55, #444c55 4px, #d8dde2 4px, #d8dde2 9px);
}

.product-card-body,
.card,
.feature {
  padding: 24px;
}

.product-card h3,
.card h3,
.feature h3 {
  margin: 0 0 10px;
  font-size: 21px;
}

.product-card p,
.card p,
.feature p {
  margin: 0 0 18px;
  color: var(--muted);
}

.text-link {
  color: var(--accent);
  font-weight: 900;
}

.split {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 48px;
  align-items: center;
}

.photo-panel {
  min-height: 430px;
  background:
    linear-gradient(rgba(45, 51, 58, 0.1), rgba(45, 51, 58, 0.12)),
    url("assets/compressor-hero.png") center / cover no-repeat;
  box-shadow: var(--shadow);
}

.photo-panel.about-photo {
  background:
    linear-gradient(rgba(45, 51, 58, 0.08), rgba(45, 51, 58, 0.1)),
    url("assets/about-facility.png") center / cover no-repeat;
}

.photo-panel.detail-photo {
  background:
    linear-gradient(rgba(45, 51, 58, 0.08), rgba(45, 51, 58, 0.1)),
    url("assets/two-stage-detail.png") center / cover no-repeat;
}

.tick-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.tick-list li {
  padding-left: 28px;
  position: relative;
  color: #303842;
}

.tick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 13px;
  height: 13px;
  background: var(--green);
}

.industries {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.industry {
  padding: 18px 14px;
  min-height: 84px;
  display: grid;
  align-content: center;
  background: var(--paper);
  border-left: 4px solid var(--blue);
  font-weight: 800;
  box-shadow: 0 8px 18px rgba(22, 25, 29, 0.05);
}

.page-hero {
  background:
    linear-gradient(90deg, rgba(22, 25, 29, 0.92), rgba(22, 25, 29, 0.7)),
    url("assets/compressor-hero.png") center / cover no-repeat;
  color: #fff;
  padding: 82px 0;
}

.about-page .page-hero {
  background:
    linear-gradient(90deg, rgba(22, 25, 29, 0.9), rgba(22, 25, 29, 0.58)),
    url("assets/about-facility.png") center / cover no-repeat;
}

.products-page .page-hero {
  background:
    linear-gradient(90deg, rgba(22, 25, 29, 0.9), rgba(22, 25, 29, 0.56)),
    url("assets/product-lineup.png") center / cover no-repeat;
}

.detail-page .page-hero {
  background:
    linear-gradient(90deg, rgba(22, 25, 29, 0.92), rgba(22, 25, 29, 0.58)),
    url("assets/two-stage-detail.png") center / cover no-repeat;
}

.page-hero p {
  max-width: 700px;
  color: #d9e0e7;
  font-size: 18px;
}

.values {
  counter-reset: value;
}

.value {
  position: relative;
  min-height: 190px;
}

.value::before {
  counter-increment: value;
  content: "0" counter(value);
  display: block;
  color: var(--accent);
  font-weight: 900;
  margin-bottom: 16px;
}

.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.filter-pill {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  padding: 10px 14px;
  font-weight: 800;
}

.filter-pill.active {
  background: var(--graphite);
  color: #fff;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 360px;
  gap: 40px;
  align-items: start;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  border: 1px solid var(--line);
}

.spec-table th,
.spec-table td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.spec-table th {
  width: 36%;
  background: #f8fafb;
}

.side-box {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 24px;
  position: sticky;
  top: 104px;
}

.side-box h3 {
  margin-top: 0;
}

.cta {
  background: var(--graphite);
  color: #fff;
  padding: 58px 0;
}

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

.cta p {
  color: #d9e0e7;
}

.site-footer {
  background: #111417;
  color: #c5ccd3;
  padding: 42px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 28px;
}

.footer-grid h4 {
  margin: 0 0 12px;
  color: #fff;
}

.footer-grid p,
.footer-grid a {
  display: block;
  margin: 0 0 9px;
  color: #c5ccd3;
}

@media (max-width: 940px) {
  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-links {
    position: absolute;
    left: 0;
    right: 0;
    top: 78px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 18px 24px 24px;
    background: #fff;
    border-bottom: 1px solid var(--line);
  }

  .nav-links.open {
    display: flex;
  }

  .hero-strip,
  .grid.two,
  .grid.three,
  .grid.four,
  .industries,
  .split,
  .detail-layout,
  .footer-grid,
  .cta-inner {
    grid-template-columns: 1fr;
  }

  .hero-strip {
    position: relative;
    left: auto;
    bottom: auto;
    transform: none;
    width: 100%;
  }

  .hero {
    min-height: auto;
  }

  .hero .section-inner {
    padding: 76px 0 54px;
  }

  .stat {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .section-head,
  .cta-inner {
    display: grid;
  }

  .side-box {
    position: static;
  }
}

@media (max-width: 560px) {
  .topbar-inner {
    display: none;
  }

  .brand span:last-child {
    font-size: 15px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 40px;
  }

  .section {
    padding: 62px 0;
  }

  .product-visual {
    height: 158px;
  }
}