/* ═══════════════════════════════════════════════════════
   CSS VARIABLES & RESET
   ═══════════════════════════════════════════════════════ */
:root {
  --navy: #0a1628;
  --navy-mid: #11213d;
  --navy-light: #1a2f52;
  --teal: #00c9a7;
  --teal-bright: #00e6be;
  --teal-dark: #00a88c;
  --cyan: #00b4d8;
  --slate: #8892a4;
  --light: #e8ecf2;
  --offwhite: #f4f6f9;
  --white: #ffffff;
  --earth: #c9a96e;
  --earth-light: #ddc48f;
  --warning-amber: #f0a500;
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', sans-serif;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--navy);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ═══════════════════════════════════════════════════════
   UTILITY
   ═══════════════════════════════════════════════════════ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
}

.section-label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--teal);
}

/* ═══════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.4s var(--ease-out-expo);
}

.nav.scrolled {
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  padding: 12px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.2);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-logo-icon svg { width: 20px; height: 20px; }

.nav-logo-text {
  font-family: var(--font-display);
  font-size: 26px;
  color: var(--white);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.7);
  transition: color 0.3s;
  letter-spacing: 0.3px;
}

.nav-links a:hover { color: var(--white); }

.nav-cta {
  padding: 10px 24px;
  border-radius: 6px;
  background: var(--teal);
  color: var(--navy) !important;
  font-weight: 600 !important;
  transition: all 0.3s var(--ease-out-expo) !important;
}

.nav-cta:hover {
  background: var(--teal-bright) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,201,167,0.3);
}

/* ═══════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--navy);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 900px;
  height: 900px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,201,167,0.12) 0%, transparent 70%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,180,216,0.08) 0%, transparent 70%);
  animation: heroGlow 10s ease-in-out infinite alternate-reverse;
}

@keyframes heroGlow {
  from { transform: scale(1) translate(0, 0); }
  to { transform: scale(1.15) translate(30px, -20px); }
}

/* Grid pattern overlay */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 80%);
}

/* Molecule decoration */
.hero-molecules {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.molecule {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  opacity: 0.3;
}

.molecule::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, rgba(0,201,167,0.3), transparent);
  transform-origin: left center;
}

.molecule:nth-child(1) { top: 20%; left: 75%; animation: float 6s ease-in-out infinite; }
.molecule:nth-child(2) { top: 60%; left: 85%; animation: float 8s ease-in-out infinite 1s; }
.molecule:nth-child(3) { top: 35%; left: 90%; animation: float 7s ease-in-out infinite 2s; opacity: 0.2; }
.molecule:nth-child(4) { top: 75%; left: 70%; animation: float 9s ease-in-out infinite 0.5s; opacity: 0.15; }
.molecule:nth-child(5) { top: 15%; left: 65%; animation: float 7s ease-in-out infinite 3s; opacity: 0.2; }

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-20px) translateX(10px); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: 140px 0 100px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 8px;
  border-radius: 100px;
  background: rgba(0,201,167,0.1);
  border: 1px solid rgba(0,201,167,0.2);
  margin-bottom: 32px;
  animation: fadeInUp 0.8s var(--ease-out-expo) both;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0,201,167,0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(0,201,167,0); }
}

.hero-badge span {
  font-size: 12px;
  font-weight: 600;
  color: var(--teal);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(44px, 5.5vw, 72px);
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 28px;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.15s both;
}

.hero h1 em {
  font-style: italic;
  color: var(--teal);
}

.hero-sub {
  font-size: 18px;
  line-height: 1.7;
  color: var(--slate);
  margin-bottom: 44px;
  max-width: 540px;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.3s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.45s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s var(--ease-out-expo);
}

.btn-primary {
  background: var(--teal);
  color: var(--navy);
}

.btn-primary:hover {
  background: var(--teal-bright);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,201,167,0.25);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.25);
}

.btn-outline:hover {
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.05);
  transform: translateY(-2px);
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform 0.3s;
}

.btn:hover svg { transform: translateX(3px); }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════════
   TRUST BAR
   ═══════════════════════════════════════════════════════ */
.trust-bar {
  background: var(--navy-mid);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 0;
}

.trust-bar-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.trust-item {
  padding: 40px 32px;
  border-right: 1px solid rgba(255,255,255,0.06);
  text-align: center;
  transition: background 0.3s;
}

.trust-item:last-child { border-right: none; }
.trust-item:hover { background: rgba(0,201,167,0.04); }

.trust-number {
  font-family: var(--font-display);
  font-size: 48px;
  color: var(--teal);
  line-height: 1;
  margin-bottom: 8px;
}

.trust-number span {
  font-family: var(--font-body);
  font-size: 28px;
  font-weight: 300;
}

.trust-label {
  font-size: 13px;
  color: var(--slate);
  letter-spacing: 0.5px;
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════════════
   INTRO / ABOUT SECTION
   ═══════════════════════════════════════════════════════ */
.intro {
  padding: 120px 0;
  background: var(--white);
  position: relative;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.intro h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 3.5vw, 48px);
  line-height: 1.15;
  color: var(--navy);
  margin-bottom: 28px;
}

.intro h2 em {
  font-style: italic;
  color: var(--teal-dark);
}

.intro p {
  font-size: 16px;
  line-height: 1.8;
  color: #5a6476;
  margin-bottom: 20px;
}

.intro-visual {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
}

.intro-visual-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 16px;
  padding: 40px;
}

/* Water droplet animation inside the visual */
.water-rings {
  position: relative;
  width: 160px;
  height: 160px;
}

.water-rings .ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1.5px solid var(--teal);
  opacity: 0;
  animation: ripple 3s ease-out infinite;
}

.water-rings .ring:nth-child(2) { animation-delay: 0.8s; }
.water-rings .ring:nth-child(3) { animation-delay: 1.6s; }

@keyframes ripple {
  0% { transform: scale(0.3); opacity: 0.6; }
  100% { transform: scale(1.4); opacity: 0; }
}

.water-rings .center-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 30px rgba(0,201,167,0.5);
}

.intro-visual-label {
  font-size: 13px;
  color: var(--slate);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 8px;
}

/* ═══════════════════════════════════════════════════════
   PRODUCTS SECTION
   ═══════════════════════════════════════════════════════ */
.products {
  padding: 120px 0;
  background: var(--offwhite);
  position: relative;
}

.products-header {
  max-width: 640px;
  margin-bottom: 64px;
}

.products-header h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 3.5vw, 48px);
  line-height: 1.15;
  color: var(--navy);
  margin-bottom: 16px;
}

.products-header p {
  font-size: 16px;
  line-height: 1.7;
  color: #5a6476;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.product-card {
  background: var(--white);
  border-radius: 16px;
  border: 1px solid rgba(0,0,0,0.06);
  transition: all 0.4s var(--ease-out-expo);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}
.product-card-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-card-body p { flex: 1; }
.product-image {
  width: 100%;
  height: 200px;
  position: relative;
  overflow: hidden;
  background: var(--offwhite);
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 20px;
  transition: transform 0.5s var(--ease-out-expo);
}
.product-card:hover .product-image img { transform: scale(1.05); }
.product-image-gradient {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 20px;
}
.product-image-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-image-icon svg { width: 32px; height: 32px; color: #fff; }
.product-image-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.8px;
  color: rgba(255,255,255,0.9);
  text-transform: uppercase;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out-expo);
  z-index: 2;
}

.product-card:hover::before { transform: scaleX(1); }

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(10,22,40,0.08);
  border-color: transparent;
}

.product-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.product-icon svg {
  width: 28px;
  height: 28px;
}

.product-icon.teal { background: rgba(0,201,167,0.1); color: var(--teal-dark); }
.product-icon.cyan { background: rgba(0,180,216,0.1); color: var(--cyan); }
.product-icon.earth { background: rgba(201,169,110,0.15); color: var(--earth); }
.product-icon.navy { background: rgba(10,22,40,0.08); color: var(--navy); }
.product-icon.amber { background: rgba(240,165,0,0.1); color: var(--warning-amber); }
.product-icon.purple { background: rgba(120,80,200,0.1); color: #7850c8; }

.product-card h3 {
  font-family: var(--font-body);
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
}

.product-card p {
  font-size: 14px;
  line-height: 1.7;
  color: #6b7689;
  margin-bottom: 20px;
}

.product-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--teal-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}

.product-card:hover .product-link { gap: 10px; }

.product-link svg { width: 14px; height: 14px; }

/* ═══════════════════════════════════════════════════════
   SERVICES SECTION
   ═══════════════════════════════════════════════════════ */
.services {
  padding: 96px 0;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  position: relative;
  overflow: hidden;
}

.services::before {
  content: '';
  position: absolute;
  top: -180px;
  right: -180px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,201,167,0.08) 0%, transparent 70%);
}

.services .section-label {
  font-size: 13px;
  margin-bottom: 18px;
}

.services-header {
  max-width: 820px;
  margin-bottom: 36px;
  position: relative;
}

.services-header h2 {
  font-family: var(--font-display);
  font-size: clamp(34px, 3.6vw, 50px);
  line-height: 1.12;
  color: var(--white);
  margin-bottom: 16px;
}

.services-header p {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,0.72);
  max-width: 760px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  position: relative;
}

.service-card {
  padding: 22px;
  border-radius: 18px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.4s var(--ease-out-expo);
  position: relative;
  overflow: hidden;
  min-height: 0;
}

.service-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(0,201,167,0.22);
  transform: translateY(-4px);
}

.service-thumb {
  height: 132px;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 18px;
  position: relative;
}

.service-thumb::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--teal), var(--cyan));
}

.service-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) brightness(1.04);
}

.service-card-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 10px;
}

.service-card-number {
  font-family: var(--font-display);
  font-size: 34px;
  color: rgba(0,201,167,0.5);
  line-height: 1;
  flex-shrink: 0;
}

.service-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  margin: 0;
}

.service-card p {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255,255,255,0.68);
}

/* ═══════════════════════════════════════════════════════
   CONTAMINANTS / CAPABILITIES
   ═══════════════════════════════════════════════════════ */
.contaminants {
  padding: 120px 0;
  background: var(--white);
}

.contaminants-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.contaminants-header .section-label { justify-content: center; }
.contaminants-header .section-label::before { display: none; }

.contaminants-header h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 3.5vw, 48px);
  line-height: 1.15;
  color: var(--navy);
  margin-bottom: 16px;
}

.contaminants-header p {
  font-size: 16px;
  line-height: 1.7;
  color: #5a6476;
}

.contaminant-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 960px;
  margin: 0 auto;
}

.contaminant-tag {
  display: inline-block;
  padding: 14px 24px;
  border-radius: 100px;
  background: var(--offwhite);
  border: 1px solid rgba(0,0,0,0.06);
  font-size: 14px;
  font-weight: 500;
  color: var(--navy);
  text-decoration: none;
  transition: all 0.3s var(--ease-out-expo);
  cursor: pointer;
}

.contaminant-tag:hover {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(10,22,40,0.15);
}

.contaminant-tag.featured {
  background: linear-gradient(135deg, rgba(0,201,167,0.08), rgba(0,180,216,0.08));
  border-color: rgba(0,201,167,0.2);
  color: var(--teal-dark);
  font-weight: 600;
}

.contaminant-tag.featured:hover {
  background: var(--teal);
  color: var(--navy);
  border-color: var(--teal);
}

/* ═══════════════════════════════════════════════════════
   PFAS CALLOUT
   ═══════════════════════════════════════════════════════ */
.pfas-callout {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--navy) 0%, #0f2847 100%);
  position: relative;
  overflow: hidden;
}

.pfas-callout::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,201,167,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,201,167,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.pfas-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
}

.pfas-content .section-label { color: var(--warning-amber); }
.pfas-content .section-label::before { background: var(--warning-amber); }

.pfas-content h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 3vw, 44px);
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 20px;
}

.pfas-content p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate);
  margin-bottom: 32px;
}

.pfas-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.pfas-feature {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.pfas-feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(0,201,167,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pfas-feature-icon svg { width: 20px; height: 20px; color: var(--teal); }

.pfas-feature h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 4px;
}

.pfas-feature p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
  margin-bottom: 0;
}

/* ═══════════════════════════════════════════════════════
   WHY HEPURE
   ═══════════════════════════════════════════════════════ */
.why {
  padding: 120px 0;
  background: var(--offwhite);
}

.why-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 72px;
}

.why-header .section-label { justify-content: center; }
.why-header .section-label::before { display: none; }

.why-header h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 3.5vw, 48px);
  line-height: 1.15;
  color: var(--navy);
  margin-bottom: 16px;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.why-card {
  text-align: center;
  padding: 48px 32px;
  border-radius: 16px;
  background: var(--white);
  border: 1px solid rgba(0,0,0,0.04);
  transition: all 0.4s var(--ease-out-expo);
}

.why-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 64px rgba(10,22,40,0.06);
}

.why-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0,201,167,0.1), rgba(0,180,216,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.why-icon svg { width: 28px; height: 28px; color: var(--teal-dark); }

.why-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
}

.why-card p {
  font-size: 14px;
  line-height: 1.7;
  color: #6b7689;
}

/* ═══════════════════════════════════════════════════════
   CTA SECTION
   ═══════════════════════════════════════════════════════ */
.cta-section {
  padding: 120px 0;
  background: var(--white);
  position: relative;
}

.cta-box {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  border-radius: 24px;
  padding: 80px;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,201,167,0.12) 0%, transparent 70%);
}

.cta-box::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,180,216,0.08) 0%, transparent 70%);
}

.cta-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 64px;
  align-items: center;
}

.cta-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 3vw, 44px);
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 20px;
}

.cta-inner p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--slate);
  margin-bottom: 36px;
}

.cta-contacts {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.cta-contact {
  padding: 28px;
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
}

.cta-contact-region {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 10px;
}

.cta-contact-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 6px;
}

.cta-contact-info {
  font-size: 14px;
  color: var(--slate);
  line-height: 1.6;
}

.cta-contact-info a {
  color: var(--teal);
  transition: color 0.2s;
}

.cta-contact-info a:hover { color: var(--teal-bright); }

/* ═══════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════ */
.footer {
  background: var(--navy);
  padding: 64px 0 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
  margin-top: 16px;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 20px;
}

.footer-col ul { list-style: none; }

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--slate);
  transition: color 0.2s;
}

.footer-col ul li a:hover { color: var(--teal); }

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.3);
}

.footer-socials {
  display: flex;
  gap: 16px;
}

.footer-socials a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.footer-socials a:hover {
  background: var(--teal);
}

.footer-socials a svg { width: 16px; height: 16px; color: var(--slate); }
.footer-socials a:hover svg { color: var(--navy); }

/* ═══════════════════════════════════════════════════════
   HAMBURGER MENU
   ═══════════════════════════════════════════════════════ */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  z-index: 1001;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all 0.3s var(--ease-out-expo);
  transform-origin: center;
}

.nav-hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--navy);
  padding: 100px 32px 40px;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  display: block;
  padding: 18px 0;
  font-size: 18px;
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color 0.2s;
}

.mobile-menu a:hover,
.mobile-menu a:active { color: var(--teal); }

.mobile-menu .mobile-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 24px;
  padding: 16px 32px;
  background: var(--teal);
  color: var(--navy);
  font-weight: 700;
  font-size: 16px;
  border-radius: 8px;
  border-bottom: none;
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE — TABLET
   ═══════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .pfas-inner { gap: 48px; }
  .cta-inner { gap: 48px; }

  .intro { padding: 100px 0; }
  .products { padding: 100px 0; }
  .solutions { padding: 100px 0; }
  .contaminants { padding: 100px 0; }
  .why { padding: 100px 0; }
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE — MOBILE
   ═══════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .container { padding: 0 20px; }

  /* Nav */
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav { padding: 16px 0; }
  .nav.scrolled { padding: 12px 0; }

  /* Hero */
  .hero { min-height: auto; }
  .hero-content { padding: 110px 0 56px; }
  .hero h1 { font-size: clamp(32px, 8vw, 48px); margin-bottom: 20px; }
  .hero-sub { font-size: 16px; margin-bottom: 32px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; width: 100%; }
  .hero-badge { margin-bottom: 24px; }

  /* Trust Bar */
  .trust-bar-inner { grid-template-columns: repeat(2, 1fr); }
  .trust-item {
    padding: 24px 16px;
  }
  .trust-item:nth-child(2) { border-right: none; }
  .trust-item:nth-child(1),
  .trust-item:nth-child(2) { border-bottom: 1px solid rgba(255,255,255,0.06); }
  .trust-number { font-size: 36px; }
  .trust-number span { font-size: 22px; }
  .trust-label { font-size: 12px; }

  /* Intro */
  .intro { padding: 72px 0; }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .intro h2 { font-size: 30px; }
  .intro-visual { aspect-ratio: 16/10; }

  /* Products */
  .products { padding: 72px 0; }
  .products-header { margin-bottom: 40px; }
  .products-header h2 { font-size: 28px; }
  .product-grid { grid-template-columns: 1fr; gap: 16px; }
  .product-card-body { padding: 24px; }
  .product-image { height: 180px; }
  .product-icon { width: 48px; height: 48px; margin-bottom: 18px; }
  .product-card h3 { font-size: 18px; }

  /* Services */
  .solutions { padding: 72px 0; }
  .services-header h2 { font-size: 28px; }
  .services-header { margin-bottom: 40px; }
  .services-grid { grid-template-columns: 1fr; gap: 16px; }
  .service-card { padding: 32px 24px; }
  .service-card-number { font-size: 40px; margin-bottom: 12px; }
  .service-card h3 { font-size: 18px; }

  /* Contaminants */
  .contaminants { padding: 72px 0; }
  .contaminants-header { margin-bottom: 40px; }
  .contaminants-header h2 { font-size: 28px; }
  .contaminant-tags { gap: 8px; }
  .contaminant-tag { padding: 10px 16px; font-size: 13px; }

  /* PFAS Callout */
  .pfas-callout { padding: 72px 0; }
  .pfas-inner { grid-template-columns: 1fr; gap: 32px; }
  .pfas-content h2 { font-size: 28px; }

  /* Why */
  .why { padding: 72px 0; }
  .why-header { margin-bottom: 40px; }
  .why-header h2 { font-size: 28px; }
  .why-grid { grid-template-columns: 1fr; gap: 16px; }
  .why-card { padding: 36px 24px; }

  /* CTA */
  .cta-section { padding: 72px 0; }
  .cta-box { padding: 36px 24px; border-radius: 16px; }
  .cta-inner { grid-template-columns: 1fr; gap: 40px; }
  .cta-inner h2 { font-size: 28px; }
  .cta-inner p { margin-bottom: 24px; }
  .cta-inner .btn { width: 100%; justify-content: center; }
  .cta-contacts { gap: 16px; }
  .cta-contact { padding: 20px; }

  /* Footer */
  .footer { padding: 48px 0 24px; }
  .footer-inner { grid-template-columns: 1fr; gap: 36px; margin-bottom: 36px; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .footer-bottom p { font-size: 12px; }
}

.product-image{position:relative;height:220px;background:#eef2f6;overflow:hidden;border-bottom:1px solid rgba(0,0,0,.04)}
.product-image::after{content:'';position:absolute;top:0;left:0;right:0;height:6px;background:linear-gradient(90deg,var(--teal),var(--cyan))}
.product-image img{width:100%;height:100%;object-fit:cover;filter:grayscale(100%) brightness(1.04)}
.intro-visual{min-height:320px;overflow:hidden}
.intro-visual img{width:100%;height:100%;object-fit:cover;filter:grayscale(100%) brightness(1.06)!important;padding:0!important}


/* Stylistic pass overrides */
.intro{padding:96px 0;background:#fff}.intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}.intro-visual{border-radius:20px;overflow:hidden;border:1px solid rgba(0,0,0,.05);box-shadow:0 18px 48px rgba(10,22,40,.08);min-height:340px}.intro-visual::after{content:'';position:absolute;top:0;left:0;right:0;height:7px;background:linear-gradient(90deg,var(--teal),var(--cyan))}.intro-visual{position:relative}.products{padding:104px 0;background:var(--offwhite)}.products-header{max-width:760px;margin-bottom:40px}.product-grid{gap:22px}.product-card{background:#fff;border-radius:18px;overflow:hidden;border:1px solid rgba(0,0,0,.05);box-shadow:0 12px 36px rgba(10,22,40,.04)}.product-card:hover{transform:translateY(-4px);box-shadow:0 20px 48px rgba(10,22,40,.08)}.product-image{height:220px}.product-card-body{padding:26px}.contaminants{padding:104px 0}.contaminants-header{margin-bottom:40px}.contaminant-tags{gap:12px;max-width:1120px;margin:0 auto}.contaminant-tag{padding:12px 18px;border-radius:999px;box-shadow:0 6px 18px rgba(10,22,40,.04)}
@media(max-width:960px){.intro-grid{grid-template-columns:1fr}.intro-visual{min-height:260px}}

.current-page{cursor:default}