:root {
  --ink: #0b1f24;
  --muted: #5b6d70;
  --line: rgba(11, 31, 36, 0.12);
  --teal: #006b68;
  --teal-dark: #034b4d;
  --mint: #9ed8c6;
  --blue: #1f6f9c;
  --steel: #eef4f3;
  --paper: #fbfcfa;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", Arial, sans-serif;
  letter-spacing: 0;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 14px 40px rgba(5, 26, 30, 0.08);
  backdrop-filter: blur(18px);
}

.header-top {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 22px clamp(20px, 5vw, 72px) 18px;
  border-bottom: 1px solid rgba(11, 31, 36, 0.1);
}

.header-nav {
  display: flex;
  justify-content: center;
  padding: 0 clamp(20px, 5vw, 72px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  justify-content: center;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 42px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 800;
}

.brand strong {
  display: block;
}

.brand strong {
  color: #099cdb;
  font-size: clamp(22px, 3vw, 40px);
  line-height: 1;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  gap: 0;
  font-size: 14px;
  font-weight: 700;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 70px;
  padding: 0 clamp(14px, 2.1vw, 36px);
  border-bottom: 5px solid transparent;
  opacity: 0.86;
}

.site-nav a:hover {
  border-bottom-color: #09a3e4;
  opacity: 1;
}

.nav-toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: 760px;
  overflow: hidden;
  display: grid;
  align-items: center;
  padding: 260px clamp(20px, 5vw, 72px) 70px;
  color: var(--white);
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
}

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

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(5, 31, 35, 0.9) 0%, rgba(5, 31, 35, 0.64) 42%, rgba(5, 31, 35, 0.14) 76%),
    linear-gradient(0deg, rgba(5, 31, 35, 0.28), rgba(5, 31, 35, 0.1));
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 830px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--mint);
}

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

h1 {
  max-width: 900px;
  margin-bottom: 24px;
  font-size: clamp(42px, 5.4vw, 78px);
  line-height: 0.96;
  font-weight: 800;
}

.hero-copy {
  max-width: 640px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.65;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 800;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.button.primary {
  background: var(--mint);
  color: #082b2f;
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.44);
  color: var(--white);
}

.button.dark {
  background: var(--teal-dark);
  color: var(--white);
}

.section {
  padding: 96px clamp(20px, 5vw, 72px);
}

.market-focus {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.8fr);
  gap: clamp(38px, 6vw, 88px);
  align-items: center;
  padding: 88px clamp(20px, 5vw, 72px);
  background: linear-gradient(135deg, #eff8f5, #f7fbfa 58%, #e4f0f3);
}

.market-focus-copy h2 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.06;
}

.market-focus-copy > p:not(.section-kicker) {
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.market-focus-list {
  display: grid;
  gap: 12px;
  margin: 28px 0 34px;
  padding: 0;
  list-style: none;
}

.market-focus-list li {
  position: relative;
  padding-left: 28px;
  color: #123b41;
  font-weight: 700;
  line-height: 1.5;
}

.market-focus-list li::before {
  position: absolute;
  top: 0.42em;
  left: 0;
  width: 11px;
  height: 11px;
  border: 3px solid var(--teal);
  border-radius: 50%;
  content: "";
}

.market-focus-image {
  position: relative;
  margin: 0;
}

.market-focus-image img {
  display: block;
  width: 100%;
  min-height: 420px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 26px 70px rgba(4, 47, 50, 0.18);
}

.market-focus-image figcaption {
  position: absolute;
  right: 18px;
  bottom: 18px;
  max-width: calc(100% - 36px);
  padding: 9px 12px;
  border-radius: 4px;
  background: rgba(8, 31, 35, 0.82);
  color: rgba(255, 255, 255, 0.88);
  font-size: 12px;
}

.center-heading {
  margin-bottom: 42px;
  text-align: center;
}

.center-heading span {
  display: block;
  color: rgba(11, 31, 36, 0.24);
  font-size: clamp(38px, 5vw, 60px);
  font-weight: 800;
  line-height: 0.9;
  text-transform: uppercase;
}

.center-heading h2 {
  position: relative;
  display: inline-block;
  margin: 0;
  padding-bottom: 18px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
  font-weight: 800;
}

.center-heading h2::after {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 72px;
  height: 4px;
  background: #09a3e4;
  content: "";
  transform: translateX(-50%);
}

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

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

.application-stage {
  display: grid;
  grid-template-columns: minmax(260px, 0.42fr) minmax(0, 1fr);
  align-items: stretch;
  max-width: 1440px;
  margin: 0 auto;
  overflow: hidden;
  background: #dff1f8;
}

.application-tabs {
  display: grid;
  background: #079de0;
  color: var(--white);
}

.application-tab {
  position: relative;
  display: block;
  min-height: 132px;
  padding: 30px 28px;
  border: 0;
  overflow: hidden;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.application-tab:hover,
.application-tab:focus-visible,
.application-tab.is-active {
  background: #62c3ef;
  color: #09394a;
}

.application-tab:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.86);
  outline-offset: -6px;
}

.application-tab:hover {
  transform: translateX(4px);
}

.application-tabs strong {
  display: block;
  margin-bottom: 10px;
  font-size: clamp(22px, 2.2vw, 34px);
  line-height: 1.1;
}

.application-tabs span {
  display: block;
  max-width: 320px;
  font-size: 15px;
  line-height: 1.55;
}

.application-stage img {
  width: 100%;
  height: 100%;
  min-height: 660px;
  object-fit: cover;
  object-position: center;
  transition: opacity 0.18s ease;
}

.intro-grid,
.capabilities {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.78fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}

.intro h2,
.section-heading h2,
.capability-copy h2,
.cta h2 {
  max-width: 780px;
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.05;
  font-weight: 800;
}

.intro p,
.capability-copy p,
.cta p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.intro-copy p:last-child {
  margin-bottom: 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 54px;
}

.stats-grid div {
  min-height: 150px;
  display: grid;
  align-content: center;
  justify-items: center;
  padding: 24px;
  border: 1px solid rgba(31, 111, 156, 0.18);
  border-radius: 6px;
  background: #f2f6f9;
  text-align: center;
}

.stats-grid strong,
.stats-grid span {
  display: block;
}

.stats-grid strong {
  margin-bottom: 14px;
  color: #064aa9;
  font-size: clamp(42px, 5vw, 72px);
  line-height: 0.95;
  font-weight: 800;
}

.stats-grid span {
  color: #42576f;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.35;
  text-transform: uppercase;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 26px;
  background: var(--line);
  border: 1px solid var(--line);
}

.advantage-grid div {
  min-height: 210px;
  padding: 28px;
  background: var(--white);
}

.advantage-grid strong,
.advantage-grid span {
  display: block;
}

.advantage-grid strong {
  margin-bottom: 18px;
  color: var(--ink);
  font-size: 22px;
  line-height: 1.18;
}

.advantage-grid span {
  color: var(--muted);
  line-height: 1.65;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 42px;
}

.products {
  background: var(--steel);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.product-card {
  position: relative;
  aspect-ratio: 1.38 / 1;
  display: block;
  background: #dbe4e6;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 18px 42px rgba(5, 26, 30, 0.08);
}

.product-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.96);
  transition: transform 220ms ease, filter 220ms ease;
}

.product-card:hover img,
.product-card:focus-within img {
  transform: scale(1.035);
  filter: saturate(1.05);
}

.product-overlay {
  position: absolute;
  inset: auto 0 0;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 20px;
  color: #fff;
  background: linear-gradient(90deg, rgba(6, 19, 24, 0.72), rgba(6, 19, 24, 0.56));
}

.product-overlay span {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  font-weight: 800;
}

.product-card h3 {
  color: #fff;
  font-size: 21px;
  line-height: 1.18;
  text-align: right;
}

.project-row span {
  color: var(--muted);
  line-height: 1.65;
}

.news {
  background: #f2f2f6;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.news-grid article {
  display: grid;
  grid-template-rows: 240px 1fr;
  overflow: hidden;
  background: var(--white);
  border-radius: 6px;
  box-shadow: 0 18px 45px rgba(5, 26, 30, 0.07);
}

.news-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.news-grid article div {
  min-height: 180px;
  padding: 28px;
  background: #07a1df;
  color: var(--white);
}

.news-grid time {
  display: block;
  margin-bottom: 12px;
  font-size: 40px;
  line-height: 1;
  font-weight: 500;
}

.news-grid h3 {
  margin-bottom: 10px;
  font-size: 18px;
  line-height: 1.28;
}

.news-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
  line-height: 1.55;
}

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

.capability-copy {
  position: sticky;
  top: 120px;
}

.capability-list {
  border-top: 1px solid var(--line);
}

.capability-list div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.capability-list span {
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.capability-list strong {
  font-size: 20px;
  line-height: 1.45;
}

.projects {
  background: #102c31;
  color: var(--white);
}

.projects .section-kicker {
  color: var(--mint);
}

.sector-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.sector-strip span {
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  font-weight: 700;
}

.project-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 32px;
}

.project-row div {
  min-height: 230px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.035);
}

.project-row strong,
.project-row span {
  display: block;
}

.project-row small {
  display: block;
  margin-bottom: 20px;
  color: var(--mint);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.project-row strong {
  margin-bottom: 16px;
  font-size: 22px;
}

.project-row span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  line-height: 1.6;
}

.cta {
  justify-content: space-between;
  padding: 76px clamp(20px, 5vw, 72px);
  background: var(--mint);
}

.quote-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.62fr);
  align-items: start;
  gap: clamp(34px, 5vw, 88px);
}

.cta .section-kicker {
  color: var(--teal-dark);
}

.cta p {
  max-width: 760px;
  margin: 22px 0 0;
  color: #174348;
}

.quote-copy h2 {
  max-width: 860px;
}

.contact-groups {
  display: grid;
  gap: 16px;
  max-width: 760px;
  margin-top: 28px;
}

.contact-groups div {
  display: grid;
  gap: 7px;
  padding-left: 18px;
  border-left: 4px solid var(--teal-dark);
  color: #174348;
}

.contact-groups strong {
  color: var(--ink);
  font-size: 15px;
}

.contact-groups span {
  font-size: 15px;
  line-height: 1.45;
}

.contact-groups a {
  color: var(--teal-dark);
  font-size: 15px;
  line-height: 1.45;
  text-decoration: underline;
  text-decoration-color: rgba(3, 75, 77, 0.28);
  text-underline-offset: 3px;
}

.quote-form {
  display: grid;
  gap: 16px;
  width: 100%;
  padding: 28px;
  border: 1px solid rgba(3, 75, 77, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.58);
  box-shadow: 0 24px 60px rgba(4, 47, 50, 0.08);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.quote-form label {
  display: grid;
  gap: 8px;
  color: #123b41;
  font-size: 13px;
  font-weight: 800;
}

.quote-form input,
.quote-form select,
.quote-form textarea {
  width: 100%;
  border: 1px solid rgba(3, 75, 77, 0.24);
  border-radius: 6px;
  background: var(--white);
  color: var(--ink);
  font: inherit;
}

.quote-form input,
.quote-form select {
  min-height: 46px;
  padding: 0 13px;
}

.quote-form textarea {
  min-height: 124px;
  padding: 13px;
  resize: vertical;
}

.quote-form input:focus,
.quote-form select:focus,
.quote-form textarea:focus {
  outline: 2px solid rgba(31, 111, 156, 0.28);
  border-color: var(--blue);
}

.quote-submit {
  width: 100%;
  margin-top: 2px;
  cursor: pointer;
}

.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-note {
  margin: -4px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
}

.quote-form .form-consent {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  align-items: start;
  font-weight: 600;
  line-height: 1.5;
}

.quote-form .form-consent input {
  width: 18px;
  min-height: 18px;
  margin-top: 2px;
  accent-color: var(--teal-dark);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1.35fr;
  gap: 48px;
  padding: 56px clamp(20px, 5vw, 72px);
  background:
    linear-gradient(rgba(8, 19, 23, 0.93), rgba(8, 19, 23, 0.93)),
    url("assets/water-treatment-hero.webp") center / cover;
  color: rgba(255, 255, 255, 0.76);
  font-size: 15px;
}

.site-footer div {
  display: grid;
  align-content: start;
  gap: 14px;
}

.site-footer strong {
  margin-bottom: 14px;
  color: var(--white);
  font-size: 26px;
}

.site-footer span {
  display: block;
}

.site-footer a {
  display: block;
  color: rgba(255, 255, 255, 0.76);
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.22);
  text-underline-offset: 3px;
}

.site-footer a:hover {
  color: var(--white);
}

@media (max-width: 980px) {
  .site-header {
    position: sticky;
  }

  .header-top {
    padding: 16px 20px;
  }

  .header-nav {
    justify-content: flex-end;
    padding: 0 20px 14px;
  }

  .site-nav {
    position: fixed;
    top: 118px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    background: var(--white);
    color: var(--ink);
    box-shadow: 0 20px 60px rgba(5, 26, 30, 0.16);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 16px;
    min-height: 0;
    border-bottom: 0;
  }

  .nav-toggle {
    display: inline-grid;
    width: 44px;
    height: 44px;
    place-content: center;
    gap: 6px;
    border: 1px solid currentColor;
    border-radius: 6px;
    background: transparent;
    color: inherit;
  }

  .nav-toggle span {
    width: 18px;
    height: 2px;
    background: currentColor;
  }

  .hero {
    min-height: 760px;
    align-items: start;
    padding-top: 116px;
  }

  .hero-content {
    padding-top: 74px;
  }

  .intro-grid,
  .stats-grid,
  .advantage-grid,
  .application-stage,
  .capabilities,
  .market-focus,
  .product-grid,
  .news-grid,
  .quote-section,
  .site-footer,
  .project-row {
    grid-template-columns: 1fr;
  }


  .application-stage img {
    min-height: 360px;
  }

  .market-focus-image img {
    min-height: 360px;
  }

  .capability-copy {
    position: static;
  }

  .product-card {
    aspect-ratio: 1.35 / 1;
  }

  .product-card img {
    min-height: 0;
  }

  .product-overlay {
    min-height: 66px;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 16px 18px;
  }

  .brand strong {
    font-size: 20px;
  }

  .brand-mark {
    width: 42px;
    height: 38px;
    font-size: 12px;
  }

  .hero {
    min-height: 860px;
    padding: 96px 18px 32px;
  }

  h1 {
    font-size: 36px;
  }

  .section,
  .cta {
    padding: 68px 18px;
  }

  .center-heading span {
    font-size: 34px;
  }

  .section-heading,
  .cta,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .capability-list div {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .quote-form {
    padding: 20px;
  }
}