/* ============================================================
   AquaEngineering — Green Tech Premium Landing
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---------- Design Tokens ---------- */
:root {
  --emerald: #006d4e;
  --emerald-dark: #004d38;
  --emerald-deep: #003326;
  --lime: #39e75f;
  --lime-dim: #2bc94e;
  --white: #ffffff;
  --off-white: #f5f7f6;
  --gray-50: #f0f2f1;
  --gray-100: #e0e4e2;
  --gray-200: #c1c8c4;
  --gray-500: #6b7a72;
  --gray-700: #3a4a42;
  --gray-900: #1a2420;
  --problem-bg: #2c2824;
  --problem-text: #d4ccc4;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --glow: 0 0 40px rgba(57, 231, 95, 0.25);
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Typography ---------- */
.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--gray-500);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  border-radius: 60px;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 40%,
    rgba(255, 255, 255, 0.15) 50%,
    transparent 60%
  );
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn:hover::after {
  transform: translateX(100%);
}

.btn-primary {
  background: var(--lime);
  color: var(--gray-900);
  box-shadow: 0 4px 20px rgba(57, 231, 95, 0.35);
}

.btn-primary:hover {
  background: var(--lime-dim);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(57, 231, 95, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  border-color: var(--lime);
  color: var(--lime);
  transform: translateY(-2px);
}

.btn-dark {
  background: var(--emerald);
  color: var(--white);
}

.btn-dark:hover {
  background: var(--emerald-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 109, 78, 0.3);
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
  padding: 20px 0;
}

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

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--white);
  text-decoration: none;
  letter-spacing: -0.5px;
  line-height: 1;
  transition: var(--transition);
}

.header.scrolled .logo {
  font-size: 1.5rem;
  color: var(--emerald-deep);
}

.footer-logo {
  color: var(--white) !important;
}

.nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--white);
  transition: var(--transition);
  position: relative;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--lime);
  transition: var(--transition);
}

.nav a:hover::after {
  width: 100%;
}

.header.scrolled .nav a {
  color: var(--gray-900);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 24px;
}

.header-phone {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.header.scrolled .header-phone {
  color: var(--emerald-deep);
}

.header-phone:hover {
  color: var(--lime);
}

.header-cta .btn {
  padding: 10px 24px;
  font-size: 0.85rem;
  white-space: nowrap;
}

.mobile-toggle,
.mobile-toggle-close {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-toggle-close {
  width: 20px;
  height: 20px;
}

.mobile-toggle span,
.mobile-toggle-close span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
  border-radius: 2px;
}

.mobile-toggle-close span:first-child {
  position: absolute;
  transform: rotate(45deg);
  top: 10px;
}
.mobile-toggle-close span:last-child {
  position: absolute;
  transform: rotate(-45deg);
  top: 10px;
}

.nav.open .mobile-toggle-close {
  position: absolute;
  display: flex;
  top: 5%;
  right: 5%;
}

.header.scrolled .mobile-toggle span {
  background: var(--gray-900);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 700px;
  display: flex;
  align-items: center;
  padding-top: 100px;
  padding-bottom: 50px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

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

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(0, 51, 38, 0.88) 0%,
    rgba(0, 77, 56, 0.65) 50%,
    rgba(0, 51, 38, 0.75) 100%
  );
}

/* Animated particles / glow */
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.hero-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--lime);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat 6s ease-in-out infinite;
}

@keyframes particleFloat {
  0% {
    opacity: 0;
    transform: translateY(100vh) scale(0.5);
  }

  20% {
    opacity: 0.8;
  }

  80% {
    opacity: 0.6;
  }

  100% {
    opacity: 0;
    transform: translateY(-20vh) scale(1.5);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  color: var(--white);
  /*max-width: 720px;*/
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(57, 231, 95, 0.12);
  border: 1px solid rgba(57, 231, 95, 0.25);
  border-radius: 60px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--lime);
  margin-bottom: 28px;
  animation: fadeInUp 0.8s ease-out;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(57, 231, 95, 0.5);
  }

  50% {
    box-shadow: 0 0 0 8px rgba(57, 231, 95, 0);
  }
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

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

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 12px;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-micro {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 36px;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 56px;
  animation: fadeInUp 0.8s ease-out 0.5s both;
}

.hero-stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--lime);
}

.hero-stat-label {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 4px;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   SECTION — SOLUTION
   ============================================================ */
.solution {
  padding: 80px 0 60px;
  background: var(--white);
}

.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: flex-start;
  margin-top: 32px;
}

.solution-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.solution-visual img {
  width: 100%;
  transition: transform 0.6s ease;
}

.solution-visual:hover img {
  transform: scale(1.03);
}

.solution-visual .badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  padding: 10px 18px;
  background: rgba(0, 51, 38, 0.85);
  backdrop-filter: blur(12px);
  border-radius: 60px;
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.solution-visual .badge .dot2 {
  width: 8px;
  height: 8px;
  background: var(--lime);
  border-radius: 50%;
}

.solution-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 6px;
}

.solution-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 12px 16px;
  border-radius: var(--radius);
  transition: var(--transition);
}

.solution-item:hover {
  background: var(--off-white);
}

.solution-item .check {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lime), var(--emerald));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 700;
}

.solution-item span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--gray-700);
}

.solution-note {
  margin-top: 16px;
  padding: 16px 20px;
  background: var(--off-white);
  border-left: 3px solid var(--lime);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.85rem;
  color: var(--gray-500);
}

/* ============================================================
   SECTION — PRODUCT
   ============================================================ */
.product {
  padding: 100px 0;
  background: var(--off-white);
}

.product-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-top: 48px;
}

.product-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.product-image img {
  width: 100%;
  transition: transform 0.6s ease;
}

.product-image:hover img {
  transform: scale(1.03);
}

.product-name {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--emerald);
  margin-bottom: 20px;
}

.product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.spec-card {
  padding: 20px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

.spec-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.spec-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--emerald);
}

.spec-label {
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: 4px;
}

.product-advantages {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.advantage {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--white);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: var(--transition);
  border: 1px solid transparent;
}

.advantage:hover {
  border-color: var(--lime);
  transform: translateX(6px);
}

.advantage .adv-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(57, 231, 95, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--emerald);
  font-size: 0.75rem;
}

/* ============================================================
   SECTION — DIGITAL (Dark Mode)
   ============================================================ */
.digital {
  padding: 100px 0;
  background: linear-gradient(160deg, var(--emerald-deep) 0%, #001f14 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.digital-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(57, 231, 95, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 231, 95, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.digital-grid-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 50%, rgba(57, 231, 95, 0.05) 0%, transparent 60%);
}

.digital .container {
  position: relative;
  z-index: 1;
}

.digital-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  margin-top: 48px;
}

.digital-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.digital-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  backdrop-filter: blur(4px);
  position: relative;
  overflow: hidden;
}

/* Sharp computer-style entrance animation */
.digital-card.reveal {
  opacity: 0;
  transform: translateX(-60px) scaleX(0.85);
  transition: none;
}

.digital-card.reveal.visible {
  animation: digitalSlam 0.35s steps(4, end) forwards;
}

@keyframes digitalSlam {
  0% {
    opacity: 0;
    transform: translateX(-60px) scaleX(0.85);
    border-color: transparent;
  }
  25% {
    opacity: 0.7;
    transform: translateX(8px) scaleX(1.02);
    border-color: rgba(57, 231, 95, 0.5);
    box-shadow: 0 0 25px rgba(57, 231, 95, 0.3);
  }
  50% {
    opacity: 1;
    transform: translateX(-3px) scaleX(1);
    border-color: rgba(57, 231, 95, 0.3);
    box-shadow: 0 0 15px rgba(57, 231, 95, 0.15);
  }
  75% {
    transform: translateX(1px) scaleX(1);
    border-color: rgba(57, 231, 95, 0.15);
  }
  100% {
    opacity: 1;
    transform: translateX(0) scaleX(1);
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: none;
  }
}

/* Scanline pseudo for extra tech feel */
.digital-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(57, 231, 95, 0.08) 50%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

.digital-card.reveal.visible::after {
  animation: scanline 0.5s ease-out forwards;
}

@keyframes scanline {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

.digital-card-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: rgba(57, 231, 95, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--lime);
  border: 1px solid rgba(57, 231, 95, 0.15);
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.digital-card:hover {
  background: rgba(57, 231, 95, 0.12);
  border-color: rgba(57, 231, 95, 0.4);
  transform: translateX(10px) scale(1.02);
  box-shadow: 0 0 30px rgba(57, 231, 95, 0.15);
  animation: computerFlicker 0.2s steps(2);
}

@keyframes computerFlicker {
  0% {
    opacity: 0.8;
    background: rgba(57, 231, 95, 0.2);
  }
  100% {
    opacity: 1;
    background: rgba(57, 231, 95, 0.12);
  }
}

.digital-card:hover .digital-card-icon {
  background: var(--lime);
  color: var(--gray-900);
  transform: rotate(5deg) scale(1.1);
  box-shadow: 0 0 15px var(--lime);
}

.digital-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  transition: color 0.3s ease;
}

.digital-card:hover h3 {
  color: var(--lime);
}

.digital-card p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

.digital-visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.digital-img {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.5s ease;
  box-shadow: 0 0 40px rgba(57, 231, 95, 0.12);
  animation: monitorPulse 4s ease-in-out infinite;
}

.digital-img:hover {
  border-color: rgba(57, 231, 95, 0.3);
  transform: scale(1.02);
  box-shadow: 0 0 60px rgba(57, 231, 95, 0.25);
}

@keyframes monitorPulse {
  0%,
  100% {
    box-shadow:
      0 0 30px rgba(57, 231, 95, 0.1),
      inset 0 0 20px rgba(57, 231, 95, 0.05);
  }
  50% {
    box-shadow:
      0 0 50px rgba(57, 231, 95, 0.2),
      inset 0 0 30px rgba(57, 231, 95, 0.1);
  }
}

.digital-img img {
  width: 100%;
}

.digital-results {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
  margin-bottom: 48px;
}

.digital-visual .digital-img {
  height: 100%;
}

.digital-visual .digital-img img {
  height: 100%;
  object-fit: cover;
}

.result-card {
  text-align: center;
  padding: 28px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  transition: var(--transition);
}

.result-card:hover {
  background: rgba(57, 231, 95, 0.06);
  border-color: rgba(57, 231, 95, 0.15);
  transform: translateY(-4px);
}

.result-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--lime);
}

.result-label {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 6px;
}

/* ============================================================
   SECTION — PRODUCTION
   ============================================================ */
.production {
  padding: 100px 0;
  background: var(--white);
}

.production-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-top: 48px;
}

.prod-card {
  text-align: center;
  transition: var(--transition);
}

.prod-card:hover {
  transform: translateY(-6px);
}

.prod-card-icon {
  width: 140px;
  height: 140px;
  margin: 0 auto 20px;
  transition: var(--transition);
}

.prod-card:hover .prod-card-icon {
  transform: scale(1.08);
  filter: drop-shadow(0 0 16px rgba(57, 231, 95, 0.35));
}

.prod-card-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.prod-card h3 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--gray-900);
}

/* ============================================================
   SECTION — PATENTS
   ============================================================ */
.patents {
  padding: 100px 0;
  background: var(--off-white);
}

.patents-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.patents-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--white);
  padding: 20px;
}

.patents-visual img {
  width: 100%;
  object-fit: contain;
  max-height: 500px;
}

.patents-content p {
  color: var(--gray-500);
  margin-bottom: 24px;
  font-size: 1.05rem;
  line-height: 1.7;
}

.patents-content p:last-of-type {
  margin-bottom: 32px;
}

.patents-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  background: var(--white);
  border: 1px solid rgba(57, 231, 95, 0.3);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.patents-badge svg {
  color: var(--lime);
}

.patents-badge span {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--emerald);
}

@media (max-width: 991px) {
  .patents-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* ============================================================
   SECTION — GEOGRAPHY
   ============================================================ */
.geography {
  padding: 100px 0;
  background: linear-gradient(160deg, var(--emerald-deep) 0%, #001f14 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.geography-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-top: 48px;
}

.geo-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(57, 231, 95, 0.15);
  box-shadow: var(--glow);
}

.geo-map img {
  width: 100%;
}

.geo-stats {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.geo-stat {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  transition: var(--transition);
}

.geo-stat:hover {
  background: rgba(57, 231, 95, 0.06);
  border-color: rgba(57, 231, 95, 0.15);
  transform: translateX(8px);
}

.geo-stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--lime);
  min-width: 100px;
}

.geo-stat-text {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.65);
}

/* ============================================================
   SECTION — CASES
   ============================================================ */
.cases {
  padding: 100px 0;
  background: var(--off-white);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.case-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.case-img {
  width: 100%;
  height: 220px;
  overflow: hidden;
}

.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.case-card:hover .case-img img {
  transform: scale(1.06);
}

.case-body {
  padding: 24px 28px 28px;
}

.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--emerald), var(--lime));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
  z-index: 1;
}

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

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.case-tag {
  display: inline-block;
  padding: 5px 12px;
  background: rgba(0, 109, 78, 0.08);
  color: var(--emerald);
  border-radius: 60px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.case-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.case-volume {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--emerald);
}

.case-unit {
  font-size: 0.85rem;
  color: var(--gray-500);
}

.cases-cta {
  text-align: center;
  margin-top: 48px;
}

/* ============================================================
   SECTION — INDUSTRIES
   ============================================================ */
.industries {
  padding: 100px 0;
  background: var(--white);
}

.industries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.industry-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  aspect-ratio: 3/4;
  transition: var(--transition);
  border: 2px solid transparent;
}

.industry-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.industry-card:hover img {
  transform: scale(1.08);
}

.industry-card:hover {
  border-color: var(--lime);
  box-shadow: var(--glow);
}

.industry-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0, 51, 38, 0.9) 100%);
  display: flex;
  align-items: flex-end;
  padding: 24px;
}

.industry-card .overlay h3 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
}

/* ============================================================
   SECTION — STAGES (Timeline)
   ============================================================ */
.stages {
  padding: 100px 0;
  background: var(--off-white);
}

.timeline {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-top: 56px;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 40px;
  right: 40px;
  height: 3px;
  background: var(--gray-100);
  z-index: 0;
}

.timeline-progress {
  position: absolute;
  top: 32px;
  left: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--emerald), var(--lime));
  z-index: 1;
  width: 0;
  transition: width 1.5s ease-out;
}

.timeline.animated .timeline-progress {
  width: calc(100% - 80px);
}

.stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  position: relative;
  z-index: 2;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease-out;
}

.stage.visible {
  opacity: 1;
  transform: translateY(0);
}

.stage-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--gray-500);
  margin-bottom: 16px;
  transition: var(--transition);
}

.stage.visible .stage-number {
  border-color: var(--lime);
  color: var(--emerald);
  box-shadow: 0 0 0 6px rgba(57, 231, 95, 0.12);
}

.stage-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  color: var(--gray-700);
}

.stages-note {
  text-align: center;
  margin-top: 48px;
  padding: 18px 28px;
  background: var(--white);
  border-radius: 60px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--emerald);
  box-shadow: var(--shadow);
  margin-left: auto;
  margin-right: auto;
}

.stages-note-wrapper {
  text-align: center;
  margin-top: 32px;
}

/* ============================================================
   SECTION — GUARANTEES (Engineering System)
   ============================================================ */
.guarantees {
  position: relative;
  padding: 100px 0;
  background: var(--white);
  overflow: hidden;
}

.guarantees-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 109, 78, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 109, 78, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

.guarantees .container {
  position: relative;
  z-index: 1;
}

.guarantees .section-title {
  color: var(--gray-900);
}

.guarantees-system {
  position: relative;
  margin-top: 80px;
  padding-bottom: 20px;
}

/* The connecting line */
.system-line {
  position: absolute;
  top: 10px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: rgba(0, 109, 78, 0.15);
  z-index: 1;
}

/* Traveling pulse animation */
.system-line-glow {
  position: absolute;
  top: -1px;
  left: 0;
  width: 100px;
  height: 4px;
  background: var(--lime);
  border-radius: 4px;
  box-shadow:
    0 0 15px var(--lime),
    0 0 30px var(--emerald);
  animation: pulse-travel 8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes pulse-travel {
  0% {
    left: -5%;
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    left: 105%;
    opacity: 0;
  }
}

/* Nodes container */
.system-nodes {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  position: relative;
  z-index: 2;
}

.system-node-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  text-align: center;
  padding: 0 15px;
  cursor: default;
}

/* Node circle */
.system-node {
  width: 22px;
  height: 22px;
  background: var(--white);
  border: 3px solid var(--emerald);
  border-radius: 50%;
  margin-bottom: 32px;
  transition: var(--transition);
  position: relative;
  box-shadow: 0 0 0 4px rgba(0, 109, 78, 0.06);
}

.system-node::after {
  content: '';
  position: absolute;
  inset: 2px;
  background: var(--emerald);
  border-radius: 50%;
  opacity: 0;
  transition: var(--transition);
}

.system-node-group:hover .system-node {
  transform: scale(1.2);
  border-color: var(--lime);
  box-shadow:
    0 0 15px rgba(57, 231, 95, 0.4),
    0 0 0 6px rgba(57, 231, 95, 0.15);
}

.system-node-group:hover .system-node::after {
  opacity: 1;
  background: var(--lime);
}

/* Node text */
.system-text h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
  transition: var(--transition);
}

.system-node-group:hover .system-text h3 {
  color: var(--emerald);
}

.system-text p {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.4;
  margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
  .system-line {
    top: 0;
    bottom: 0;
    left: 20px;
    right: auto;
    width: 2px;
    height: 100%;
  }

  .system-line-glow {
    top: 0;
    left: -1px;
    width: 4px;
    height: 60px;
    animation: pulse-travel-vert 6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  }

  @keyframes pulse-travel-vert {
    0% {
      top: -5%;
      opacity: 0;
    }
    10% {
      opacity: 1;
    }
    90% {
      opacity: 1;
    }
    100% {
      top: 105%;
      opacity: 0;
    }
  }

  .system-nodes {
    flex-direction: column;
    gap: 40px;
  }

  .system-node-group {
    flex-direction: row;
    align-items: flex-start;
    text-align: left;
    padding: 0;
  }

  .system-node {
    margin-bottom: 0;
    margin-right: 24px;
    flex-shrink: 0;
  }
}

/* ============================================================
   SECTION — FORM
   ============================================================ */
.form-section {
  padding: 100px 0;
  background: linear-gradient(160deg, var(--emerald-deep) 0%, var(--emerald-dark) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.form-section::before {
  content: '';
  position: absolute;
  bottom: -200px;
  right: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(57, 231, 95, 0.1), transparent 70%);
  pointer-events: none;
}

.form-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.form-text .section-title {
  color: var(--white);
}

.form-text .lead {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 24px;
}

.form-trust {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 28px;
}

.form-trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

.form-trust-item .ft-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(57, 231, 95, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--lime);
  font-size: 0.7rem;
  flex-shrink: 0;
}

.contact-form {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: 40px;
  backdrop-filter: blur(12px);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.7);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--lime);
  box-shadow: 0 0 0 3px rgba(57, 231, 95, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-form .btn-primary {
  width: 100%;
  justify-content: center;
}

.form-group label.contactform7ru-success {
  color: var(--lime);
}

/* ============================================================
   SECTION — CONTACTS
   ============================================================ */
.contacts {
  padding: 60px 0;
  background: var(--gray-900);
  color: var(--white);
}

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

.contact-info {
  display: flex;
  gap: 48px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(57, 231, 95, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--lime);
  font-size: 1.1rem;
}

.contact-label {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
}

.contact-value {
  font-size: 0.95rem;
  font-weight: 600;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: 32px 0;
  background: var(--gray-900);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.4);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
}

.footer-legal {
  display: flex;
  gap: 24px;
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition:
    opacity 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition:
    opacity 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1300px) {
  .hero {
    padding-top: 120px;
  }
  .header-inner {
    flex-wrap: wrap;
  }
  .nav {
    flex-basis: 100%;
    order: 3;
    justify-content: flex-end;
    padding: 20px 0 10px 0;
  }
  .header-cta {
    order: 2;
  }
}

@media (max-width: 1200px) {
  .solution-grid,
  .product-hero,
  .digital-layout,
  .geography-layout,
  .form-layout,
  .problem-layout {
    grid-template-columns: 1fr;
  }

  .cases-grid {
    grid-template-columns: 1fr 1fr;
  }

  .industries-grid {
    grid-template-columns: 1fr 1fr;
  }

  .digital-results {
    grid-template-columns: repeat(2, 1fr);
  }

  .production-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .timeline {
    flex-direction: column;
    gap: 24px;
    align-items: flex-start;
    padding-left: 48px;
  }

  .timeline::before {
    width: 3px;
    height: calc(100% - 80px);
    top: 32px;
    left: 30px;
    right: auto;
  }

  .timeline-progress {
    width: 3px !important;
    height: 0;
    left: 30px;
    right: auto;
  }

  .timeline.animated .timeline-progress {
    width: 3px !important;
    height: calc(100% - 80px);
  }

  .stage {
    flex-direction: row;
    gap: 20px;
    align-items: center;
  }

  .stage-number {
    flex-shrink: 0;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

  section {
    padding: 64px 0 !important;
  }

  .nav {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    height: 100vh;
    width: 100%;
    background: rgba(0, 51, 38, 0.97);
    backdrop-filter: blur(20px);
    justify-content: center;
    align-items: center;
    gap: 28px;
    z-index: 999;
  }

  .nav.open a {
    font-size: 1.3rem;
    color: var(--white);
  }
  .header.scrolled .nav a {
    color: #fff;
  }

  .header-cta {
    display: none;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat-value {
    font-size: 1.5rem;
  }

  .cases-grid {
    grid-template-columns: 1fr;
  }

  .industries-grid {
    grid-template-columns: 1fr 1fr;
  }

  .production-grid {
    grid-template-columns: 1fr 1fr;
  }

  .digital-results {
    grid-template-columns: 1fr 1fr;
  }

  .contacts-inner {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }

  .contact-info {
    flex-direction: column;
    gap: 20px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .product-specs {
    grid-template-columns: 1fr;
  }

  .industries-grid {
    grid-template-columns: 1fr;
  }

  .production-grid {
    grid-template-columns: 1fr;
  }
}