:root {
  --green-deep: #004d40;
  --green-mid: #00695c;
  --green-light: #e0f2f1;
  --green-glow: #00e5a0;
  --cream: #faf8f5;
  --cream-dark: #f0ede8;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-muted: #8a8a8a;
  --white: #ffffff;
  --radius: 12px;
  --radius-lg: 20px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--cream);
  color: var(--ink);
  font-family: 'DM Sans', sans-serif;
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
}

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 40px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(250, 248, 245, 0.85);
  border-bottom: 1px solid rgba(0, 77, 64, 0.08);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.nav-logo {
  color: var(--green-deep);
  font-size: 22px;
}

.nav-name {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--green-deep);
}

.nav-tag {
  font-size: 13px;
  color: var(--ink-muted);
  letter-spacing: 1px;
  font-style: italic;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 40px 100px;
  overflow: hidden;
}

.hero-inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--green-deep);
  background: var(--green-light);
  padding: 8px 20px;
  border-radius: 40px;
  margin-bottom: 40px;
}

.hero-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(42px, 6vw, 80px);
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--ink);
  margin-bottom: 32px;
}

.hero-accent {
  color: var(--green-deep);
  font-style: italic;
}

.hero-lede {
  font-size: 19px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 640px;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 40px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-number {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 28px;
  color: var(--green-deep);
}

.stat-label {
  font-size: 13px;
  color: var(--ink-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(0, 77, 64, 0.15);
}

.hero-gradient-orb {
  position: absolute;
  top: -10%;
  right: -15%;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 160, 0.12) 0%, rgba(0, 77, 64, 0.04) 50%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* ===== PHILOSOPHY ===== */
.philosophy {
  padding: 120px 40px;
  background: var(--green-deep);
  color: var(--white);
}

.philosophy-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.section-label {
  display: inline-block;
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 4px;
  opacity: 0.6;
  margin-bottom: 24px;
}

.philosophy-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: -1px;
}

.philosophy-right p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 20px;
  font-size: 17px;
  line-height: 1.75;
}

/* ===== PRODUCTS ===== */
.products {
  padding: 120px 40px;
  background: var(--cream);
}

.products-header {
  max-width: 1200px;
  margin: 0 auto 60px;
}

.products-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(28px, 3.5vw, 44px);
  letter-spacing: -1px;
}

.products-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.product-card {
  background: var(--white);
  border: 1px solid rgba(0, 77, 64, 0.08);
  border-radius: var(--radius-lg);
  padding: 44px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
  border-color: rgba(0, 77, 64, 0.2);
  box-shadow: 0 8px 40px rgba(0, 77, 64, 0.06);
}

.product-card--featured {
  grid-column: 1 / -1;
  background: var(--green-deep);
  color: var(--white);
  border-color: transparent;
}

.product-card--featured:hover {
  border-color: transparent;
  box-shadow: 0 12px 48px rgba(0, 77, 64, 0.25);
}

.product-card--featured .product-badge {
  background: rgba(0, 229, 160, 0.15);
  color: var(--green-glow);
}

.product-card--featured .product-desc {
  color: rgba(255, 255, 255, 0.75);
}

.product-card--featured .product-margin {
  color: var(--green-glow);
  border-color: rgba(0, 229, 160, 0.3);
}

.product-card--featured .product-category {
  color: rgba(255, 255, 255, 0.5);
}

.product-number {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 2px;
  opacity: 0.3;
}

.product-badge {
  display: inline-block;
  align-self: flex-start;
  font-family: 'Syne', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--green-deep);
  background: var(--green-light);
  padding: 6px 14px;
  border-radius: 30px;
}

.product-name {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.5px;
}

.product-desc {
  color: var(--ink-soft);
  line-height: 1.7;
  font-size: 16px;
}

.product-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-top: 8px;
}

.product-margin {
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 13px;
  color: var(--green-deep);
  border: 1px solid rgba(0, 77, 64, 0.2);
  padding: 4px 12px;
  border-radius: 20px;
}

.product-category {
  font-size: 13px;
  color: var(--ink-muted);
  letter-spacing: 1px;
}

/* ===== SCIENCE / MODEL ===== */
.science {
  padding: 120px 40px;
  background: var(--cream-dark);
}

.science-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 80px;
  align-items: start;
}

.science-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(28px, 3.5vw, 44px);
  letter-spacing: -1px;
  margin-bottom: 48px;
}

.model-steps {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.model-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-deep);
  color: var(--green-glow);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
}

.step-content h4 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 6px;
}

.step-content p {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.65;
}

.science-sidebar {
  display: flex;
  flex-direction: column;
  gap: 36px;
  padding: 40px;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 77, 64, 0.08);
}

.sidebar-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-number {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 36px;
  color: var(--green-deep);
  letter-spacing: -1px;
}

.sidebar-label {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.4;
}

/* ===== CLOSING ===== */
.closing {
  padding: 140px 40px;
  background: var(--green-deep);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 160, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.closing-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.1;
  letter-spacing: -2px;
  color: var(--white);
  margin-bottom: 28px;
}

.closing-text {
  color: rgba(255, 255, 255, 0.75);
  font-size: 18px;
  line-height: 1.75;
  margin-bottom: 48px;
}

.closing-tagline {
  font-family: 'Syne', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--green-glow);
}

/* ===== FOOTER ===== */
.footer {
  padding: 32px 40px;
  background: var(--ink);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: 'Syne', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.4);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav { padding: 16px 20px; }
  .nav-tag { display: none; }

  .hero { padding: 120px 24px 80px; min-height: auto; }
  .hero-lede { font-size: 17px; }
  .hero-stats { flex-direction: column; gap: 20px; align-items: flex-start; }
  .stat-divider { width: 40px; height: 1px; }
  .hero-gradient-orb { width: 400px; height: 400px; right: -30%; top: -5%; }

  .philosophy { padding: 80px 24px; }
  .philosophy-inner { grid-template-columns: 1fr; gap: 40px; }

  .products { padding: 80px 24px; }
  .products-grid { grid-template-columns: 1fr; }
  .product-card--featured { grid-column: auto; }
  .product-card { padding: 32px; }

  .science { padding: 80px 24px; }
  .science-inner { grid-template-columns: 1fr; gap: 48px; }

  .closing { padding: 100px 24px; }

  .footer { padding: 24px 20px; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}