:root {
  /* Color Palette - Marine & Biotech focus */
  --color-primary: #004d40; /* Deep Teal */
  --color-secondary: #00bfa5; /* Bright Aqua */
  --color-accent: #ffab40; /* Golden Amber (Scientific highlight) */
  --color-dark: #1a1a1a;
  --color-light: #f8fcfb;
  --color-text: #2c3e50;
  --color-text-muted: #546e7a;
  --color-bg: #ffffff;
  --color-card-bg: #ffffff;
  --color-border: #e0f2f1;

  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 80px;
  --space-2xl: 120px;

  /* Typography */
  --font-display: 'Playfair Display', serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  
  --shadow-sm: 0 2px 4px rgba(0,77,64,0.05);
  --shadow-md: 0 10px 30px rgba(0,77,64,0.08);
  --shadow-lg: 0 20px 40px rgba(0,77,64,0.12);
}

.text-center { text-align: center; }
.mt-md { margin-top: var(--space-md); }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-800 { max-width: 800px; }
.text-lg { font-size: 1.2rem; }
.text-muted { color: var(--color-text-muted); }
.flex { display: flex; }
.gap-10 { gap: 10px; }
.mt-15 { margin-top: 15px; }
.opacity-60 { opacity: 0.6; }
.text-sm { font-size: 0.8rem; }

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-primary);
  margin: 0;
}

p {
  margin: 0 0 1rem 0;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
}

/* Navigation */
.nav {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--color-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo span {
  color: var(--color-secondary);
}

/* Hero Section */
.hero {
  padding: var(--space-xl) 0;
  background: linear-gradient(135deg, #f0fdfa 0%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  top: -10%;
  right: -5%;
  width: 40%;
  height: 60%;
  background: radial-gradient(circle, rgba(0,191,165,0.05) 0%, transparent 70%);
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-lg);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.1;
  margin-bottom: var(--space-md);
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--color-secondary);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  display: block;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin-bottom: var(--space-md);
}

.hero-visual {
  position: relative;
}

.main-product-card {
  background: var(--color-card-bg);
  border-radius: 24px;
  padding: var(--space-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

/* Section Styling */
section {
  margin-top: var(--space-xl);
  padding: var(--space-md) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.section-title p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* Advantages Grid */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

.advantage-card {
  padding: var(--space-md);
  border-radius: 16px;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.advantage-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  background: white;
}

.advantage-card .icon-box {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
}

.advantage-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  font-family: var(--font-body);
  font-weight: 700;
}

.advantage-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* Technology Section */
.tech-section {
  background: var(--color-primary);
  color: white;
  border-radius: 40px;
  padding: var(--space-xl) 0;
  margin-left: var(--space-sm);
  margin-right: var(--space-sm);
}

.tech-section h2 {
  color: white;
  text-align: center;
  margin-bottom: var(--space-lg);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.tech-item {
  text-align: center;
}

.tech-item .placeholder-icon {
  margin: 0 auto var(--space-sm);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
}

.tech-item h3 {
  color: var(--color-secondary);
  font-family: var(--font-body);
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.tech-item p {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Scientific Citations */
.citations {
  background: #f1f5f9;
  padding: var(--space-lg) 0;
}

.citations-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-sm);
}

.citation-card {
  background: white;
  padding: var(--space-sm) var(--space-md);
  border-left: 4px solid var(--color-secondary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 15px;
}

.citation-card span {
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

/* Footer */
footer {
  margin-top: var(--space-xl);
  padding: var(--space-lg) 0;
  background: #0f172a;
  color: white;
}

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

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 900;
}

.footer-logo span {
  color: var(--color-secondary);
}

/* Utilities */
.placeholder-image {
  width: 100%;
  aspect-ratio: 16/9;
  background: #e2e8f0;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94a3b8;
  position: relative;
  overflow: hidden;
}

.placeholder-image::after {
  content: attr(data-label);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.placeholder-image.square {
  aspect-ratio: 1/1;
}

.placeholder-icon {
  width: 48px;
  height: 48px;
  background: #e2e8f0;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--color-border);
  color: var(--color-primary);
}

.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: #00332b;
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  
  .tech-grid {
    grid-template-columns: 1fr;
  }
  
  .citations-list {
    grid-template-columns: 1fr;
  }
}