:root {
  --primary: #ff6b35;
  --primary-dark: #e85a28;
  --secondary: #004e89;
  --secondary-dark: #003a66;
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-muted: #6b6b6b;
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-dark: #0a0a0b;
  --border: #e0e0e0;
  --success: #28a745;
  --shadow: rgba(0, 0, 0, 0.08);
  --shadow-lg: rgba(0, 0, 0, 0.15);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
.top-nav {
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}

.top-nav.scrolled {
  box-shadow: 0 2px 10px var(--shadow);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 3rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.nav-menu {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  align-items: center;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.3s;
  position: relative;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background: var(--primary);
  transition: width 0.3s;
}

.nav-menu a:hover {
  color: var(--primary);
}

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

.nav-cta {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s;
  display: inline-block;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-primary:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
}

/* Hero Section */
.hero {
  margin-top: 80px;
  padding: 8rem 3rem 6rem;
  background: linear-gradient(135deg, #0a0a0b 0%, #1a1a2e 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="60" height="60" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="60" height="60" patternUnits="userSpaceOnUse"><path d="M 60 0 L 0 0 0 60" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
}

.hero-container {
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  max-width: 700px;
}

.hero-image {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image img {
  width: 100%;
  max-width: 600px;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
  animation: float 6s ease-in-out infinite;
}

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

.hero-badge {
  display: inline-block;
  background: rgba(255, 107, 53, 0.15);
  color: var(--primary);
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 2rem;
  border: 1px solid rgba(255, 107, 53, 0.3);
}

.hero h1 {
  font-size: 4rem;
  line-height: 1.15;
  color: white;
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary) 0%, #ff9068 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

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

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(255, 255, 255, 0.2);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid white;
}

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

/* Stats Section */
.stats {
  padding: 4rem 3rem;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
}

.stats-container {
  max-width: 1400px;
  margin: 0 auto;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
}

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

.stat-value {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
  line-height: 1;
}

.stat-label {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Section Styles */
.section {
  padding: 6rem 3rem;
}

.section-light {
  background: var(--bg-light);
}

.section-white {
  background: linear-gradient(
    135deg,
    #ffffff 0%,
    #f8f9fa 25%,
    #ffffff 50%,
    #f0f4f8 75%,
    #ffffff 100%
  );
  position: relative;
  overflow: hidden;
}

.section-white::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 20% 30%,
      rgba(0, 191, 255, 0.03) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 70%,
      rgba(147, 51, 234, 0.03) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 50% 50%,
      rgba(255, 127, 0, 0.02) 0%,
      transparent 60%
    );
  pointer-events: none;
}

.section-container {
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-subtitle {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.75rem;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  font-weight: 700;
  line-height: 1.2;
}

.section-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.feature-card {
  background: var(--bg-white);
  padding: 2.5rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all 0.3s;
  position: relative;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 12px 12px 0 0;
  transform: scaleX(0);
  transition: transform 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px var(--shadow-lg);
}

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

.feature-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 8px 20px rgba(255, 107, 53, 0.25);
}

.feature-title {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.feature-description {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 1rem;
}

/* Products Section */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.product-card {
  background: var(--bg-white);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.3s;
  position: relative;
}

.product-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 16px;
  padding: 3px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 0;
  pointer-events: none;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px var(--shadow-lg);
}

.product-card:hover::before {
  opacity: 1;
}

.product-image {
  height: 200px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: white;
  overflow: hidden;
  position: relative;
  border-bottom: 1px solid #e5e5e5;
  transition: all 0.3s ease;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  filter: grayscale(0%);
}

.product-card:hover .product-image {
  border-bottom-color: var(--primary);
  box-shadow: inset 0 -3px 0 0 var(--primary);
}

.product-card:hover .product-image img {
  transform: scale(1.08);
  filter: grayscale(0%) brightness(1.05);
}

.product-content {
  padding: 2rem;
  position: relative;
  z-index: 1;
}

.product-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 8px 20px rgba(255, 107, 53, 0.25);
  color: white;
}

.product-title {
  font-size: 1.75rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.product-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.product-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: gap 0.3s;
}

.product-link:hover {
  gap: 0.75rem;
}

/* Testimonial Section */
.testimonial {
  background: var(--bg-dark);
  color: white;
  padding: 6rem 3rem;
  text-align: center;
}

.testimonial-content {
  max-width: 900px;
  margin: 0 auto;
}

.testimonial-quote {
  font-size: 1.75rem;
  line-height: 1.6;
  margin-bottom: 2.5rem;
  font-style: italic;
  color: rgba(255, 255, 255, 0.95);
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}

.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
}

.author-info h4 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.author-info p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

/* CTA Section */
.cta {
  padding: 6rem 3rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  text-align: center;
}

.cta h2 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.cta p {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  opacity: 0.95;
}

.btn-white-outline {
  background: transparent;
  color: white;
  border: 2px solid white;
}

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

/* Footer */
.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 4rem 3rem 2rem;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand h3 {
  font-size: 1.75rem;
  color: white;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: all 0.3s;
}

.social-link:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.footer-section h4 {
  color: white;
  margin-bottom: 1.25rem;
  font-size: 1.1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #0a0a0b 0%, #1a1a2e 100%);
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.5s;
}

.loading-screen.active {
  display: flex;
  opacity: 1;
}

.loading-content {
  text-align: center;
  color: white;
}

.loading-logo {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: white;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  margin: 0 auto 1.5rem;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top: 4px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.loading-text {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* Responsive */
@media (max-width: 1024px) {
  .nav-menu {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-image {
    order: -1;
  }

  .hero-image img {
    max-width: 400px;
  }

  .hero h1 {
    font-size: 3rem;
  }

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

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

@media (max-width: 768px) {
  .nav-container {
    padding: 1rem 1.5rem;
  }

  .hero {
    padding: 6rem 1.5rem 4rem;
  }

  .hero-image img {
    max-width: 300px;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .section {
    padding: 4rem 1.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

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

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

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

/* Whitepaper Section */
.whitepaper-section {
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  padding: 6rem 0;
}

.whitepaper-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.whitepaper-book {
  perspective: 1500px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.book-cover {
  position: relative;
  width: 280px;
  height: 380px;
  transform-style: preserve-3d;
  transform: rotateY(-25deg) rotateX(5deg);
  transition: transform 0.6s ease;
  cursor: pointer;
}

.book-cover:hover {
  transform: rotateY(-15deg) rotateX(2deg) scale(1.05);
}

.book-spine {
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 100%;
  background: linear-gradient(to right, #1a1a2e 0%, #2c3e50 100%);
  transform: rotateY(-90deg);
  transform-origin: left;
  box-shadow: inset -5px 0 10px rgba(0, 0, 0, 0.3);
}

.book-front {
  position: relative;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
  border-radius: 0 8px 8px 0;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3),
    inset 0 0 50px rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.book-front::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  bottom: 20px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

.book-title {
  text-align: center;
  color: white;
  z-index: 1;
}

.book-title h3 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.book-title p {
  font-size: 1.1rem;
  font-weight: 400;
  opacity: 0.9;
  margin-bottom: 2rem;
}

.book-icon {
  font-size: 3rem;
  margin-top: 2rem;
  opacity: 0.8;
}

.whitepaper-info {
  padding: 2rem 0;
}

.whitepaper-description {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 1.5rem 0 2rem;
}

.whitepaper-highlights {
  list-style: none;
  margin: 2rem 0;
}

.whitepaper-highlights li {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.whitepaper-highlights i {
  color: var(--primary);
  font-size: 1.2rem;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
  margin-top: 1rem;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(255, 107, 53, 0.4);
}

.cta-button i {
  font-size: 1.1rem;
}

@media (max-width: 1024px) {
  .whitepaper-content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .book-cover {
    transform: rotateY(-20deg) rotateX(5deg);
  }

  .whitepaper-highlights {
    display: inline-block;
    text-align: left;
  }
}