:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #4a4a4a;
  --color-purple-light: #a855f7;
  --color-purple: #7c3aed;
  --color-purple-dark: #5b21b6;
  --color-purple-darker: #4c1d95;
  --color-gray-light: #fafafa;
  --color-gray: #e5e5e5;
  --color-border: rgba(0, 0, 0, 0.06);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
}

/* Smooth scroll reveal animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.section {
  animation: fadeIn 0.6s ease-out;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: all 0.3s;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.25rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-text);
}

.logo-img {
  width: 56px;
  height: 56px;
  display: block;
  transition: transform 0.3s;
  flex-shrink: 0;
}

.logo:hover .logo-img {
  transform: scale(1.05);
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-left: 0.5rem;
}

.nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-purple);
  transition: width 0.3s;
}

.nav-link:hover {
  color: var(--color-text);
}

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

/* Hero Section */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem;
  position: relative;
  background: var(--color-bg);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(168, 85, 247, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(124, 58, 237, 0.06) 0%, transparent 50%);
  background-size: 100% 100%;
  opacity: 1;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 20px,
      rgba(168, 85, 247, 0.02) 20px,
      rgba(168, 85, 247, 0.02) 21px
    ),
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 20px,
      rgba(124, 58, 237, 0.02) 20px,
      rgba(124, 58, 237, 0.02) 21px
    );
  background-size: 60px 60px;
  opacity: 0.6;
  pointer-events: none;
  animation: patternShift 20s linear infinite;
}

@keyframes patternShift {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(60px, 60px);
  }
}

.hero-content {
  max-width: 1000px;
  text-align: center;
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: 2rem;
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-purple-light) 0%, var(--color-purple) 50%, var(--color-purple-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.hero-subtitle {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: 1.5rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.hero-status {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--color-text-muted);
  margin-bottom: 3rem;
  font-weight: 400;
  opacity: 0.8;
  font-style: normal;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  background: var(--color-text);
  color: white;
  text-decoration: none;
  border-radius: 14px;
  font-weight: 600;
  font-size: 1.05rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active {
  transform: translateY(-1px);
}

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Sections */
.section {
  padding: 6rem 2rem;
  position: relative;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.section-title {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 2rem;
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.section-text {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
  max-width: 65ch;
}

.section-text:last-child {
  margin-bottom: 0;
}

/* Intro Section */
.intro-section {
  background: var(--color-bg);
  position: relative;
}

.intro-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(168, 85, 247, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

/* Promise Section */
.promise-section {
  background: var(--color-gray-light);
  position: relative;
}

.promise-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(168, 85, 247, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(124, 58, 237, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.promise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2.5rem;
  margin-top: 4rem;
}

.promise-item {
  background: var(--color-bg);
  padding: 2.5rem;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.promise-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-purple-light), var(--color-purple-dark));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.promise-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(124, 58, 237, 0.2);
}

.promise-item:hover::before {
  transform: scaleX(1);
}

.promise-icon {
  font-size: 3rem;
  margin-bottom: 1.25rem;
  display: block;
  filter: grayscale(0.2);
  transition: transform 0.3s;
}

.promise-item:hover .promise-icon {
  transform: scale(1.1);
}

.promise-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.875rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.promise-text {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* Use Cases Section */
.use-cases-section {
  background: var(--color-bg);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  margin-top: 4rem;
}

.use-case-card {
  padding: 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  background: var(--color-bg);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.use-case-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.02), rgba(124, 58, 237, 0.02));
  opacity: 0;
  transition: opacity 0.3s;
}

.use-case-card:hover {
  border-color: var(--color-purple);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.use-case-card:hover::after {
  opacity: 1;
}

.use-case-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.875rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
  position: relative;
  z-index: 1;
}

.use-case-text {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  position: relative;
  z-index: 1;
}

/* Why Local Section */
.why-local-section {
  background: var(--color-gray-light);
  position: relative;
}

.why-local-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(168, 85, 247, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(124, 58, 237, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.subsection-title {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  margin-top: 2rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.benefits-list {
  list-style: none;
  margin-top: 2.5rem;
  padding: 0;
}

.benefits-list li {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  padding: 1rem 0;
  padding-left: 2.5rem;
  position: relative;
  transition: color 0.2s;
}

.benefits-list li:hover {
  color: var(--color-text);
}

.benefits-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-purple);
  font-weight: 700;
  font-size: 1.3rem;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(124, 58, 237, 0.1);
  border-radius: 50%;
}

/* Technology Section */
.technology-section {
  background: var(--color-bg);
  position: relative;
}

.technology-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 30% 50%, rgba(168, 85, 247, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(124, 58, 237, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.tech-list {
  list-style: none;
  margin: 2.5rem 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.tech-list li {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  padding: 1.5rem;
  background: var(--color-gray-light);
  border-radius: 12px;
  text-align: center;
  font-weight: 500;
  transition: all 0.3s;
  border: 1px solid transparent;
}

.tech-list li:hover {
  background: var(--color-bg);
  border-color: var(--color-purple);
  color: var(--color-text);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* CTA Section */
.cta-section {
  background: var(--color-gray-light);
  text-align: center;
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 50% 50%, rgba(168, 85, 247, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section .section-title {
  margin-bottom: 1.5rem;
}

.cta-section .section-text {
  margin-bottom: 3rem;
  margin-left: auto;
  margin-right: auto;
}

/* Footer */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 3rem 2rem;
  margin-top: 2rem;
}

.footer-text {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
  .header-container {
    padding: 1rem;
    flex-direction: column;
    gap: 1rem;
  }

  .nav {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-link {
    font-size: 0.9rem;
  }

  .hero {
    min-height: 70vh;
    padding: 2rem 1rem;
  }

  .section {
    padding: 3rem 1.5rem;
  }

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

  .tech-list {
    grid-template-columns: 1fr;
  }
}