:root {
  --green: #009780;
  --green-bright: #00b79d;
  --green-dark: #064d43;
  --green-deep: #05342e;
  --green-black: #021f1c;
  --mint: #eaf7f5;
  --mint-2: #f6fbfa;
  --steel: #6f7b7d;
  --steel-light: #dce5e4;
  --line: #b8c9c7;
  --charcoal: #252b2d;
  --ink: #11191b;
  --white: #ffffff;
  --amber: #d39626;
  --shadow: 0 22px 54px rgba(7, 40, 37, 0.14);
  --border: 1px solid rgba(6, 77, 67, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--charcoal);
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  line-height: 1.6;
  background: linear-gradient(180deg, #ffffff 0%, #f9fcfb 100%);
}

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

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

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

.container {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  background: var(--green-black);
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.88rem;
}

.topbar .container {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.topbar a {
  font-weight: 700;
}

.announcement-marquee {
  overflow: hidden;
  color: var(--white);
  background: linear-gradient(90deg, var(--green-dark), var(--green), var(--green-dark));
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.marquee-track {
  width: max-content;
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: 42px;
  padding: 0 24px;
  animation: marquee-scroll 28s linear infinite;
  white-space: nowrap;
}

.announcement-marquee:hover .marquee-track,
.product-marquee:hover .marquee-track {
  animation-play-state: paused;
}

.marquee-track span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 800;
}

.marquee-track span::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
}

@keyframes marquee-scroll {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid rgba(6, 77, 67, 0.18);
  box-shadow: 0 12px 34px rgba(7, 40, 37, 0.08);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand img {
  width: 236px;
  height: 76px;
  object-fit: contain;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(6, 77, 67, 0.22);
  background: var(--white);
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--green-dark);
  content: "";
  position: relative;
}

.nav-toggle span::before {
  position: absolute;
  top: -7px;
}

.nav-toggle span::after {
  position: absolute;
  top: 7px;
}

.site-nav > ul {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a,
.site-nav button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 14px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-radius: 8px;
  font-size: 0.94rem;
  font-weight: 800;
  cursor: pointer;
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav button:hover,
.site-nav button:focus-visible,
.site-nav .active {
  color: var(--green-dark);
  background: var(--mint);
  outline: 0;
}

.nav-quote {
  color: var(--white) !important;
  background: linear-gradient(135deg, var(--green), var(--green-dark)) !important;
  box-shadow: 0 10px 22px rgba(0, 151, 128, 0.22);
}

.nav-quote:hover,
.nav-quote:focus-visible {
  background: var(--green-dark) !important;
}

.has-dropdown {
  position: relative;
}

.dropdown-arrow {
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  margin-top: -4px;
}

.dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 238px;
  margin: 0;
  padding: 8px;
  list-style: none;
  background: var(--white);
  border: var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: 0.18s ease;
}

.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown,
.has-dropdown.open .dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.dropdown a {
  width: 100%;
  justify-content: flex-start;
  padding: 10px 12px;
  min-height: 40px;
}

.hero {
  min-height: 700px;
  display: grid;
  align-items: center;
  position: relative;
  color: var(--ink);
  background-image:
    linear-gradient(90deg, rgba(2, 31, 28, 0.94) 0%, rgba(4, 61, 53, 0.88) 34%, rgba(5, 52, 46, 0.42) 68%, rgba(5, 52, 46, 0.12) 100%),
    url("../images/hero-pipes.png");
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 100%),
    radial-gradient(circle at 18% 18%, rgba(0, 183, 157, 0.28), transparent 26%);
  background-size: 42px 42px, auto;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 10px;
  background: linear-gradient(90deg, var(--amber), var(--green), var(--green-bright));
}

.hero-content {
  max-width: 760px;
  padding: 88px 0 116px;
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--green-dark);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: rgba(255, 255, 255, 0.94);
}

.hero .eyebrow::before {
  background: var(--amber);
}

.eyebrow::before {
  content: "";
  width: 38px;
  height: 3px;
  background: var(--green);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  line-height: 1.12;
  letter-spacing: 0;
}

h1 {
  margin-top: 14px;
  font-size: 4.45rem;
  max-width: 880px;
  font-weight: 900;
}

h2 {
  font-size: 2.35rem;
}

h3 {
  font-size: 1.32rem;
}

p {
  margin: 0;
}

.hero p {
  margin-top: 20px;
  max-width: 680px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.12rem;
}

.hero h1 {
  color: var(--white);
}

.hero-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.hero-badges span {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  padding: 0 13px;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.84rem;
  font-weight: 800;
}

.hero-panel {
  width: min(520px, 100%);
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
}

.hero-panel div {
  min-height: 100px;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 16px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-panel div:last-child {
  border-right: 0;
}

.hero-panel strong {
  color: var(--white);
  font-size: 1.45rem;
  line-height: 1;
}

.hero-panel span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 0 18px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(7, 40, 37, 0.1);
  transition: 0.18s ease;
}

.btn.primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--green), var(--green-dark));
}

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

.btn.secondary {
  color: var(--green-dark);
  background: var(--white);
  border-color: rgba(6, 77, 67, 0.24);
}

.btn.secondary:hover,
.btn.secondary:focus-visible {
  border-color: var(--green);
  background: var(--mint);
}

.section {
  padding: 88px 0;
}

.section.tight {
  padding: 54px 0;
}

.band {
  background:
    linear-gradient(135deg, rgba(0, 151, 128, 0.08), rgba(255, 255, 255, 0.92)),
    var(--mint-2);
  border-top: var(--border);
  border-bottom: var(--border);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 34px;
}

.section-head p {
  max-width: 610px;
  color: #4a5557;
}

.split {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 46px;
  align-items: center;
}

.split.reverse {
  grid-template-columns: 0.98fr 1.02fr;
}

.media-frame {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(0, 151, 128, 0.26);
  box-shadow: var(--shadow);
  background: var(--white);
  position: relative;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(255, 255, 255, 0.62);
  pointer-events: none;
}

.media-frame img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.copy-block {
  display: grid;
  gap: 18px;
}

.lead {
  font-size: 1.06rem;
  color: #465154;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  min-height: 54px;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 14px;
  border: var(--border);
  border-radius: 8px;
  background: var(--white);
}

.check {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 900;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stat {
  min-height: 150px;
  padding: 24px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent),
    var(--green-dark);
  color: var(--white);
  display: grid;
  align-content: center;
  gap: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 16px 36px rgba(7, 40, 37, 0.18);
}

.stat strong {
  color: var(--white);
  font-size: 2.1rem;
  line-height: 1;
}

.stat span {
  color: rgba(255, 255, 255, 0.84);
  font-weight: 700;
}

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

.card {
  border: 1px solid rgba(6, 77, 67, 0.13);
  border-radius: 8px;
  background: var(--white);
  overflow: hidden;
  box-shadow: 0 14px 34px rgba(7, 40, 37, 0.08);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 46px rgba(7, 40, 37, 0.13);
}

.card-media img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-media {
  position: relative;
  overflow: hidden;
}

.card-media::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 44%;
  background: linear-gradient(0deg, rgba(2, 31, 28, 0.42), transparent);
}

.card-body {
  display: grid;
  gap: 12px;
  padding: 22px;
}

.card-body p {
  color: #4a5557;
}

.card-link {
  color: var(--green-dark);
  font-weight: 800;
}

.standards-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.standards-strip span {
  min-height: 74px;
  display: grid;
  place-items: center;
  padding: 14px;
  border-radius: 8px;
  border: var(--border);
  background: var(--white);
  color: var(--green-dark);
  font-size: 1.25rem;
  font-weight: 900;
  box-shadow: 0 10px 24px rgba(7, 40, 37, 0.06);
}

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

.reason {
  padding: 24px;
  border-left: 4px solid var(--green);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 24px rgba(7, 40, 37, 0.07);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.capability {
  min-height: 210px;
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 24px;
  border-radius: 8px;
  border: 1px solid rgba(0, 151, 128, 0.22);
  background: var(--white);
  box-shadow: 0 12px 30px rgba(7, 40, 37, 0.07);
}

.capability .icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--white);
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  font-weight: 900;
}

.capability p {
  color: #4a5557;
}

.application-band {
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(2, 31, 28, 0.96), rgba(6, 77, 67, 0.88)),
    url("../images/factory-floor.jpg");
  background-size: cover;
  background-position: center;
}

.application-band h2,
.application-band h3,
.application-band p,
.application-band .eyebrow {
  color: var(--white);
}

.application-band .eyebrow::before {
  background: var(--amber);
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.application {
  min-height: 130px;
  display: grid;
  align-content: end;
  padding: 18px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
}

.application strong {
  color: var(--white);
  font-size: 1.06rem;
}

.application span {
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.9rem;
}

.product-marquee {
  overflow: hidden;
  border-top: var(--border);
  border-bottom: var(--border);
  background: var(--white);
}

.product-marquee .marquee-track {
  min-height: 84px;
  color: var(--green-dark);
  animation-duration: 36s;
}

.product-marquee .marquee-track span {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(6, 77, 67, 0.18);
  border-radius: 999px;
  background: var(--mint);
}

.mini-spec {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.mini-spec div {
  padding: 18px;
  border-radius: 8px;
  border: 1px solid rgba(6, 77, 67, 0.12);
  background: var(--white);
}

.mini-spec strong {
  display: block;
  color: var(--green-dark);
  margin-bottom: 6px;
}

.mini-spec span {
  color: #4a5557;
}

.reason h3 {
  margin-bottom: 10px;
}

.reason p {
  color: #4a5557;
}

.cta {
  color: var(--white);
  background: var(--green-deep);
}

.cta h2,
.cta p {
  color: var(--white);
}

.cta .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.cta p {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.82);
  max-width: 680px;
}

.page-hero {
  min-height: 360px;
  display: grid;
  align-items: end;
  color: var(--white);
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(5, 52, 46, 0.92), rgba(5, 52, 46, 0.58), rgba(5, 52, 46, 0.16));
}

.page-hero .container {
  position: relative;
  z-index: 1;
  padding: 76px 0 62px;
}

.page-hero h1 {
  color: var(--white);
  font-size: 3.1rem;
  max-width: 840px;
}

.page-hero p {
  margin-top: 14px;
  max-width: 710px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.05rem;
}

.breadcrumbs {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.9rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.values-grid,
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.value,
.process-step {
  padding: 22px;
  border-radius: 8px;
  border: var(--border);
  background: var(--white);
}

.process-step .step-no {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  color: var(--white);
  border-radius: 8px;
  background: var(--green);
  font-weight: 900;
}

.product-toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.filter-btn {
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid rgba(6, 77, 67, 0.22);
  border-radius: 8px;
  color: var(--green-dark);
  background: var(--white);
  font-weight: 800;
  cursor: pointer;
}

.filter-btn.active,
.filter-btn:hover,
.filter-btn:focus-visible {
  color: var(--white);
  background: var(--green);
  outline: 0;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: var(--border);
  border-radius: 8px;
  background: var(--white);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 780px;
}

th,
td {
  padding: 14px 15px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(6, 77, 67, 0.12);
}

th {
  color: var(--green-dark);
  background: var(--mint);
  font-size: 0.92rem;
}

td {
  color: #3f4a4c;
}

tr:last-child td {
  border-bottom: 0;
}

.technical-image {
  padding: 14px;
  background: var(--white);
  border: var(--border);
  border-radius: 8px;
  overflow-x: auto;
}

.technical-image img {
  min-width: 980px;
  width: 100%;
  height: auto;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.cert-card {
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
  border: 1px solid rgba(0, 151, 128, 0.34);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 16px 38px rgba(7, 40, 37, 0.1);
}

.cert-preview {
  padding: 14px;
  background: linear-gradient(135deg, var(--mint), #ffffff);
  border-bottom: 4px solid var(--green);
}

.cert-preview img {
  width: 100%;
  aspect-ratio: 0.73;
  object-fit: cover;
  object-position: top center;
  border: 4px solid var(--green);
  border-radius: 7px;
  background: var(--white);
  box-shadow: 0 8px 22px rgba(6, 77, 67, 0.16);
}

.cert-body {
  display: grid;
  gap: 12px;
  padding: 20px;
}

.cert-body p {
  color: #4a5557;
}

.cert-meta {
  display: inline-flex;
  width: fit-content;
  min-height: 30px;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--green-dark);
  background: var(--mint);
  font-size: 0.82rem;
  font-weight: 800;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 28px;
  align-items: start;
}

.contact-panel,
.contact-form {
  border: var(--border);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 30px rgba(7, 40, 37, 0.06);
}

.contact-panel {
  padding: 26px;
  display: grid;
  gap: 18px;
}

.contact-item {
  display: grid;
  gap: 4px;
}

.contact-item strong {
  color: var(--ink);
}

.contact-item span,
.contact-item a {
  color: #4a5557;
}

.contact-form {
  padding: 26px;
  display: grid;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field {
  display: grid;
  gap: 7px;
}

.field label {
  color: var(--ink);
  font-weight: 800;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  min-height: 46px;
  border: 1px solid rgba(6, 77, 67, 0.24);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--ink);
  background: var(--white);
}

.field textarea {
  min-height: 128px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: 3px solid rgba(0, 151, 128, 0.16);
  border-color: var(--green);
}

.form-status {
  color: var(--green-dark);
  font-weight: 800;
}

.site-footer {
  color: rgba(255, 255, 255, 0.82);
  background: var(--green-deep);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 30px;
  padding: 58px 0 42px;
}

.footer-main h3 {
  color: var(--white);
  margin-bottom: 14px;
  font-size: 1.05rem;
}

.footer-logo {
  width: 218px;
  height: 80px;
  object-fit: contain;
  background: var(--white);
  border-radius: 8px;
  padding: 8px;
  margin-bottom: 18px;
}

.footer-main ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.footer-main a:hover,
.footer-main a:focus-visible {
  color: var(--white);
}

.footer-bottom {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.9rem;
  text-align: center;
}

@media (max-width: 1020px) {
  .brand img {
    width: 214px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: var(--border);
    box-shadow: var(--shadow);
    display: none;
  }

  .site-nav.open {
    display: block;
  }

  .site-nav > ul {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
    padding: 14px 0 18px;
    display: grid;
    align-items: stretch;
  }

  .site-nav a,
  .site-nav button {
    width: 100%;
    justify-content: space-between;
  }

  .dropdown {
    position: static;
    min-width: 0;
    display: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    margin: 4px 0 8px 14px;
    box-shadow: none;
  }

  .has-dropdown.open .dropdown {
    display: grid;
  }

  .hero {
    min-height: 590px;
    background-position: 58% center;
  }

  .split,
  .split.reverse,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .cards-grid,
  .reasons,
  .values-grid,
  .process-grid,
  .capability-grid,
  .application-grid,
  .mini-spec,
  .cert-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stats-grid,
  .standards-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 680px) {
  .container {
    width: min(100% - 24px, 1160px);
  }

  .topbar .container {
    justify-content: center;
    text-align: center;
    gap: 8px;
    padding: 8px 0;
  }

  .header-inner {
    min-height: 72px;
  }

  .brand img {
    width: 174px;
    height: 58px;
  }

  h1 {
    font-size: 2.45rem;
  }

  h2 {
    font-size: 1.9rem;
  }

  .hero {
    min-height: 560px;
    background-image:
      linear-gradient(90deg, rgba(2, 31, 28, 0.96) 0%, rgba(4, 61, 53, 0.86) 68%, rgba(5, 52, 46, 0.68) 100%),
      url("../images/hero-pipes.jpg");
  }

  .hero-content {
    padding: 54px 0 78px;
  }

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

  .hero-panel div {
    min-height: 82px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .hero-panel div:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 58px 0;
  }

  .section-head {
    display: grid;
  }

  .feature-list,
  .cards-grid,
  .reasons,
  .values-grid,
  .process-grid,
  .capability-grid,
  .application-grid,
  .mini-spec,
  .cert-grid,
  .stats-grid,
  .standards-strip,
  .footer-main,
  .form-row {
    grid-template-columns: 1fr;
  }

  .cta .container {
    display: grid;
  }

  .page-hero h1 {
    font-size: 2.25rem;
  }
}