/* ============================================
   SYLVAGEO — Global Styles
   Modern Industrial + Eco Aesthetic
   ============================================ */

:root {
  /* Colors */
  --bg-primary: #263238;
  --bg-secondary: #2e3d44;
  --bg-card: #37474f;
  --bg-card-hover: #3f5159;
  --border: #4a6370;
  --border-light: #445a65;

  --green-400: #66bb6a;
  --green-500: #2e7d32;
  --green-600: #1b5e20;
  --green-dim: rgba(46, 125, 50, 0.15);

  --blue-400: #81c0d5;
  --blue-500: #5ba3bf;
  --blue-dim: rgba(91, 163, 191, 0.12);

  --purple-400: #b39ddb;
  --teal-400: #4db6ac;

  --text-primary: #eceff1;
  --text-secondary: #b0bec5;
  --text-muted: #78909c;

  /* Typography */
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-display: 'Barlow', system-ui, sans-serif;

  /* Spacing */
  --section-py: 96px;
  --nav-h: 72px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
input, textarea, select, button { font-family: inherit; }

/* ============================================
   Layout
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* iframe / embed responsive */
@media (max-width: 900px) {
  .container { padding: 0 16px; }
}
@media (max-width: 600px) {
  .container { padding: 0 12px; }
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background 0.3s, border-bottom 0.3s;
}
.navbar.scrolled {
  background: rgba(38, 50, 56, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 48px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  font-size: 22px;
  color: var(--green-400);
  line-height: 1;
}
.logo-text {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-primary);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.06);
}
.nav-cta {
  flex-shrink: 0;
  padding: 8px 20px;
  background: var(--green-500);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  transition: background 0.2s, transform 0.15s;
}
.nav-cta:hover {
  background: var(--green-600);
  transform: translateY(-1px);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: 0.3s;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: var(--nav-h) 0 0;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(46,125,50,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46,125,50,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(46,125,50,0.18) 0%, transparent 70%);
  top: 10%;
  left: -10%;
}
.hero-orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(91,163,191,0.14) 0%, transparent 70%);
  bottom: 10%;
  right: -5%;
}

.hero-content {
  position: relative;
  z-index: 2;
  flex: 1;
  max-width: 640px;
  padding: 80px 40px 80px 48px;
}
@media (max-width: 1100px) {
  .hero-content { padding-left: 24px; padding-right: 24px; }
}
@media (max-width: 768px) {
  .hero { min-height: auto; padding: calc(var(--nav-h) + 40px) 0 60px; }
  .hero-content { padding: 40px 0; max-width: 100%; }
  .hero-orb-1, .hero-orb-2 { display: none; }
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(46,125,50,0.12);
  border: 1px solid rgba(46,125,50,0.3);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--green-400);
  margin-bottom: 28px;
}
.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--green-400);
  border-radius: 50%;
  animation: pulse-dot 2s ease infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(44px, 5.5vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--green-400) 0%, var(--teal-400) 50%, var(--blue-400) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: 40px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
}
.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 24px;
}
.stat-item:first-child { padding-left: 0; }
.stat-num {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--green-400);
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

.hero-visual {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 48px 40px 24px;
  position: relative;
  z-index: 2;
  min-width: 0;
}
.geocell-diagram {
  width: 100%;
  max-width: 560px;
  border-radius: 16px;
  overflow: hidden;
  filter: drop-shadow(0 0 40px rgba(46,125,50,0.25));
  animation: float-anim 6s ease-in-out infinite;
}
.geocell-diagram img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
}
@keyframes float-anim {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ============================================
   Buttons
   ============================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--green-500);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(46,125,50,0.28);
}
.btn-primary:hover {
  background: var(--green-600);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(46,125,50,0.38);
}
.btn-primary.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-primary.btn-full { width: 100%; justify-content: center; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}
.btn-outline:hover {
  border-color: var(--green-400);
  background: var(--green-dim);
  transform: translateY(-2px);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: color 0.2s;
}
.btn-ghost:hover { color: var(--text-primary); }

/* ============================================
   Section Shared
   ============================================ */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}
.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-400);
  margin-bottom: 12px;
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.section-header p {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.section-cta {
  text-align: center;
  margin-top: 48px;
}

/* ============================================
   Intro Section
   ============================================ */
.section-intro {
  padding: var(--section-py) 0;
  background: var(--bg-secondary);
}
.intro-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.intro-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: border-color 0.3s, transform 0.3s;
}
.intro-card:hover {
  border-color: var(--green-500);
  transform: translateY(-4px);
}
.card-icon {
  font-size: 28px;
  color: var(--green-400);
  margin-bottom: 16px;
  line-height: 1;
}
.intro-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.intro-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================
   Applications Preview
   ============================================ */
.section-apps {
  padding: var(--section-py) 0;
}
.apps-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 20px;
}
.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: border-color 0.3s, transform 0.3s;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.app-card:hover {
  border-color: rgba(74, 222, 128, 0.4);
  transform: translateY(-3px);
}
.app-card-large {
  grid-row: 1 / 3;
}
.app-icon-wrap {
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.04);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.app-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}
.app-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}
.card-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--green-400);
  transition: gap 0.2s;
}
.card-link:hover { text-decoration: underline; }

/* ============================================
   Features Section
   ============================================ */
.section-features {
  padding: var(--section-py) 0;
  background: var(--bg-secondary);
}
.features-table {
  border-radius: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
}
.feature-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.feature-col {
  padding: 40px;
  border-right: 1px solid var(--border);
}
.feature-col:last-child { border-right: none; }
.feature-col h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 20px;
}
.feature-tech h4 { color: var(--text-primary); }
.feature-eco h4 { color: var(--green-400); }
.feature-install h4 { color: var(--blue-400); }
.feature-col ul { display: flex; flex-direction: column; gap: 12px; }
.feature-col li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.check { color: var(--text-primary); font-weight: 700; flex-shrink: 0; }
.check.eco { color: var(--green-400); }
.check.blue { color: var(--blue-400); }

/* ============================================
   Cases Strip
   ============================================ */
.section-cases {
  padding: var(--section-py) 0;
}
.cases-strip {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.case-item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
}
.case-item:last-child { border-bottom: none; }
.case-item:hover { background: var(--bg-card); }
.case-year {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--green-400);
  background: var(--green-dim);
  border: 1px solid rgba(46,125,50,0.25);
  border-radius: 6px;
  padding: 4px 12px;
  flex-shrink: 0;
  min-width: 70px;
  text-align: center;
}
.case-info strong {
  font-size: 16px;
  color: var(--text-primary);
  display: block;
  margin-bottom: 4px;
}
.case-info p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ============================================
   CTA Band
   ============================================ */
.cta-band {
  padding: 80px 0;
  background: linear-gradient(135deg, #1b2e1c 0%, #263238 50%, #1c2d38 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}
.cta-content h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.cta-content p {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 36px;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 64px 0 32px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}
.footer-cert {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-cert span {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--green-400);
  background: var(--green-dim);
  border: 1px solid rgba(46,125,50,0.25);
  padding: 3px 10px;
  border-radius: 4px;
}
.footer-links h5 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--green-400); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ============================================
   Page Hero (Inner Pages)
   ============================================ */
.page-hero {
  padding: calc(var(--nav-h) + 80px) 0 80px;
  position: relative;
  overflow: hidden;
}
.page-hero-sm {
  padding: calc(var(--nav-h) + 60px) 0 60px;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.page-hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}
.page-hero-content h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 4.5vw, 60px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 12px 0 20px;
  line-height: 1.1;
}
.page-hero-content p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   Application Nav Bar
   ============================================ */
.app-nav-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: var(--nav-h);
  z-index: 100;
}
.app-nav {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.app-nav::-webkit-scrollbar { display: none; }
.app-nav-item {
  flex-shrink: 0;
  padding: 16px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.app-nav-item:hover,
.app-nav-item.active {
  color: var(--green-400);
  border-bottom-color: var(--green-400);
}

/* ============================================
   Application Sections
   ============================================ */
.app-section { padding: var(--section-py) 0; }
.app-section-alt { background: var(--bg-secondary); }
.app-section-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.app-section-inner.reverse {
  direction: rtl;
}
.app-section-inner.reverse > * {
  direction: ltr;
}
.app-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.app-desc h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 18px;
  line-height: 1.15;
}
.app-lead {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}
.app-benefits {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}
.app-benefits li {
  font-size: 14px;
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
}
.app-benefits li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--green-400);
  font-weight: 700;
}
.app-detail-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.spec-badge {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 12px;
}
.spec-badge.eco {
  color: var(--green-400);
  background: var(--green-dim);
  border-color: rgba(46,125,50,0.25);
}
.spec-badge.blue {
  color: var(--blue-400);
  background: var(--blue-dim);
  border-color: rgba(91,163,191,0.22);
}
.diagram-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  position: relative;
}
.diagram-card svg {
  width: 100%;
  height: 100%;
}
.diagram-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
/* Product Showcase */
.product-showcase {
  padding: var(--section-py) 0;
  background: var(--bg-primary);
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.product-thumb {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: border-color 0.3s, transform 0.3s;
}
.product-thumb:hover {
  border-color: var(--green-500);
  transform: translateY(-3px);
}
.product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s;
}
.product-thumb:hover img {
  transform: scale(1.05);
}
/* Case card with image */
.case-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 16px;
  display: block;
}
/* About image */
.about-img-wrap {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.about-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

/* Cases Grid */
.section-cases-full { padding: var(--section-py) 0; }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: border-color 0.3s, transform 0.3s;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.case-card:hover {
  border-color: rgba(74,222,128,0.4);
  transform: translateY(-3px);
}
.case-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.case-tag {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--green-400);
  background: var(--green-dim);
  border: 1px solid rgba(46,125,50,0.25);
  border-radius: 4px;
  padding: 3px 8px;
}
.case-date {
  font-size: 12px;
  color: var(--text-muted);
}
.case-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}
.case-card p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}
.case-metrics {
  display: flex;
  gap: 24px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 4px;
}
.metric { display: flex; flex-direction: column; gap: 2px; }
.metric-val {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--green-400);
}
.metric-unit { font-size: 11px; color: var(--text-muted); }

/* ============================================
   FAQ Page
   ============================================ */
.faq-section { padding: var(--section-py) 0; }
.faq-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  align-items: start;
}
.faq-nav {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
}
.sticky-nav { position: sticky; top: calc(var(--nav-h) + 24px); }
.faq-nav h4 {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.faq-nav-link {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--text-secondary);
  border-radius: 8px;
  margin-bottom: 2px;
  transition: background 0.2s, color 0.2s;
}
.faq-nav-link:hover,
.faq-nav-link.active {
  background: var(--green-dim);
  color: var(--green-400);
}
.faq-group { margin-bottom: 56px; }
.faq-group-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 12px;
  transition: border-color 0.2s;
}
.faq-item.open { border-color: rgba(74,222,128,0.3); }
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: background 0.2s;
}
.faq-q:hover { background: var(--bg-card-hover); }
.faq-arrow {
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform 0.3s;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  display: none;
  padding: 0 24px 24px;
  background: var(--bg-card);
}
.faq-item.open .faq-a { display: block; }
.faq-a p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}
.faq-a p:last-child { margin-bottom: 0; }
.faq-a ul, .faq-a ol {
  padding-left: 20px;
  margin: 8px 0 12px;
}
.faq-a ul { list-style: disc; }
.faq-a ol { list-style: decimal; }
.faq-a li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 6px;
}
.faq-a strong { color: var(--text-primary); }
/* FAQ Table */
.faq-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 13px;
}
.faq-table th, .faq-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.faq-table th {
  background: rgba(255,255,255,0.03);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.faq-table td { color: var(--text-secondary); }
/* Compare Table */
.compare-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.compare-table th, .compare-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.compare-table th {
  background: rgba(255,255,255,0.03);
  color: var(--text-primary);
  font-weight: 600;
}
.compare-table td { color: var(--text-secondary); }
.compare-table .good { color: var(--green-400); font-weight: 500; }
.compare-table .bad { color: #f87171; }
/* FAQ CTA box */
.faq-cta-box {
  background: linear-gradient(135deg, rgba(46,125,50,0.10), rgba(91,163,191,0.07));
  border: 1px solid rgba(46,125,50,0.25);
  border-radius: 20px;
  padding: 48px;
  text-align: center;
  margin-top: 48px;
}
.faq-cta-box h3 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.faq-cta-box p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* ============================================
   About Page
   ============================================ */
.about-section { padding: var(--section-py) 0; }
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.about-text .section-label { margin-bottom: 10px; }
.about-text h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.about-lead {
  font-size: 16.5px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}
.about-text p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}
.about-values { display: flex; flex-direction: column; gap: 20px; }
.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: border-color 0.3s;
}
.value-card:hover { border-color: rgba(74,222,128,0.4); }
.value-icon {
  font-size: 22px;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.value-icon.eco { color: var(--green-400); }
.value-icon.blue { color: var(--blue-400); }
.value-card h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.value-card p { font-size: 13.5px; color: var(--text-secondary); line-height: 1.6; }
/* Technology Section */
.about-tech-section {
  padding: var(--section-py) 0;
  background: var(--bg-secondary);
}
.tech-timeline {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.timeline-item {
  display: flex;
  gap: 28px;
  padding-bottom: 40px;
  position: relative;
}
.timeline-item::after {
  content: '';
  position: absolute;
  left: 11px;
  top: 24px;
  bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline-item:last-child::after { display: none; }
.tl-marker { flex-shrink: 0; display: flex; flex-direction: column; align-items: center; }
.tl-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--bg-primary);
  position: relative;
  z-index: 1;
  transition: border-color 0.3s;
}
.tl-dot.active {
  border-color: var(--green-400);
  box-shadow: 0 0 16px rgba(46,125,50,0.35);
}
.tl-content h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.tl-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.65; }
/* Standards */
.about-standards-section { padding: var(--section-py) 0; }
.standards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.standard-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
  transition: border-color 0.3s, transform 0.3s;
}
.standard-card:hover {
  border-color: rgba(74,222,128,0.3);
  transform: translateY(-3px);
}
.std-logo {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 900;
  color: var(--green-400);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.standard-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.standard-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
/* Export section */
.about-export-section {
  padding: var(--section-py) 0;
  background: var(--bg-secondary);
}
.export-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.export-text .section-label { margin-bottom: 10px; }
.export-text h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.export-text > p { font-size: 15px; color: var(--text-secondary); margin-bottom: 28px; line-height: 1.7; }
.export-list { display: flex; flex-direction: column; gap: 20px; }
.export-list li { display: flex; gap: 16px; align-items: flex-start; }
.export-check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--green-dim);
  border: 1px solid rgba(46,125,50,0.3);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--green-400);
  margin-top: 2px;
}
.export-list strong { font-size: 15px; color: var(--text-primary); display: block; margin-bottom: 4px; }
.export-list p { font-size: 13.5px; color: var(--text-secondary); margin: 0; }
.export-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-content: start;
}
.big-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
}
.big-num {
  display: block;
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 900;
  color: var(--green-400);
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.big-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; }

/* ============================================
   Contact Page
   ============================================ */
.contact-section { padding: var(--section-py) 0; }
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact-info h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.contact-info > p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 32px; }
.contact-cards { display: flex; flex-direction: column; gap: 12px; margin-bottom: 40px; }
.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.2s;
}
.contact-card:hover { border-color: rgba(74,222,128,0.3); }
.contact-icon {
  width: 44px;
  height: 44px;
  background: var(--green-dim);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-muted); display: block; margin-bottom: 3px; }
.contact-value { font-size: 15px; font-weight: 600; color: var(--text-primary); }
.response-timeline h4 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.rt-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 14px;
}
.rt-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--green-dim);
  border: 1px solid rgba(46,125,50,0.25);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 800;
  color: var(--green-400);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.rt-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
/* Form */
.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px;
}
.contact-form h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 28px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 16px;
}
.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}
.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-primary);
  transition: border-color 0.2s, background 0.2s;
  width: 100%;
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}
.form-group select option { background: var(--bg-secondary); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--green-500);
  background: rgba(46,125,50,0.06);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-check { margin-bottom: 20px; }
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
}
.checkbox-label input[type="checkbox"] { display: none; }
.checkbox-custom {
  width: 18px;
  height: 18px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: rgba(255,255,255,0.04);
  flex-shrink: 0;
  transition: background 0.2s, border-color 0.2s;
}
.checkbox-label input:checked + .checkbox-custom {
  background: var(--green-500);
  border-color: var(--green-500);
}
.form-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 12px;
  text-align: center;
}
/* Success State */
.form-success {
  text-align: center;
  padding: 60px 20px;
}
.success-icon {
  width: 64px;
  height: 64px;
  background: var(--green-dim);
  border: 2px solid var(--green-400);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--green-400);
  margin: 0 auto 20px;
}
.form-success h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.form-success p { font-size: 15px; color: var(--text-secondary); margin-bottom: 28px; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .hero { flex-direction: column; text-align: center; min-height: auto; padding-bottom: 60px; }
  .hero-content { padding: 80px 24px 40px; max-width: 100%; }
  .hero-stats { justify-content: center; }
  .hero-visual { padding: 20px; }
  .intro-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .apps-grid { grid-template-columns: 1fr 1fr; }
  .app-card-large { grid-row: auto; }
  .feature-row { grid-template-columns: 1fr; }
  .feature-col { border-right: none; border-bottom: 1px solid var(--border); }
  .feature-col:last-child { border-bottom: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .app-section-inner { grid-template-columns: 1fr; gap: 40px; }
  .app-section-inner.reverse { direction: ltr; }
  .cases-grid { grid-template-columns: 1fr 1fr; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-nav { display: flex; gap: 4px; padding: 12px; flex-wrap: wrap; }
  .faq-nav h4 { display: none; }
  .sticky-nav { position: static; }
  .about-split { grid-template-columns: 1fr; }
  .standards-grid { grid-template-columns: repeat(2, 1fr); }
  .export-split { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --section-py: 64px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 4px;
    z-index: 999;
  }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .intro-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .apps-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .standards-grid { grid-template-columns: 1fr; }
  .export-stats { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 24px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .hero-actions { justify-content: center; }
  .faq-cta-box { padding: 32px 24px; }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in {
  animation: fade-up 0.6s ease forwards;
}