:root {
  --bg: #ffffff;
  --bg-alt: #f5f8f7;
  --bg-dark: #0a1628;
  --bg-dark-2: #0f1e36;
  --primary: #00d4a4;
  --primary-dark: #00a884;
  --accent: #06b6d4;
  --text: #0a1628;
  --text-muted: #4a5d75;
  --text-on-dark: #e6edf5;
  --text-on-dark-muted: #8aa0bc;
  --border: #e2e8ee;
  --radius: 12px;
  --max-width: 1240px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-dark);
}

img, svg {
  max-width: 100%;
  display: block;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--text);
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 18px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
}

.nav a:hover,
.nav a.active {
  color: var(--text);
}

.nav-cta {
  background: var(--text);
  color: white !important;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
}

.nav-cta:hover {
  background: var(--primary-dark);
  color: white !important;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 24px;
  color: var(--text);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: none;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  color: white;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-on-dark);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  color: white;
}

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

.btn-dark:hover {
  background: var(--bg-dark-2);
  color: white;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--bg-dark);
  color: var(--text-on-dark);
  overflow: hidden;
  padding: 120px 0 140px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0, 212, 164, 0.18) 0%, rgba(0, 212, 164, 0) 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -300px;
  left: -200px;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, rgba(6, 182, 212, 0) 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(0, 212, 164, 0.12);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 12px var(--primary);
}

.hero h1 {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  color: white;
}

.hero h1 .accent {
  background: linear-gradient(120deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 20px;
  line-height: 1.55;
  color: var(--text-on-dark-muted);
  margin-bottom: 40px;
  max-width: 680px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- Partners ---------- */
.partners {
  padding: 60px 0;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.partners-label {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
  align-items: center;
}

.partner {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.partner:hover {
  opacity: 1;
}

/* ---------- Section: Technology ---------- */
.section {
  padding: 120px 0;
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

.section-header {
  max-width: 720px;
  margin: 0 auto 64px;
  text-align: center;
}

.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.section-dark .section-header h2 {
  color: white;
}

.section-header p {
  font-size: 18px;
  color: var(--text-muted);
}

.section-dark .section-header p {
  color: var(--text-on-dark-muted);
}

/* ---------- Feature cards ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(10, 22, 40, 0.08);
  border-color: var(--primary);
}

.section-dark .feature-card {
  background: var(--bg-dark-2);
  border-color: rgba(255, 255, 255, 0.08);
}

.section-dark .feature-card:hover {
  border-color: var(--primary);
  box-shadow: 0 14px 40px rgba(0, 212, 164, 0.12);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 212, 164, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 24px;
}

.feature-card h3 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.section-dark .feature-card h3 {
  color: white;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 15.5px;
  line-height: 1.6;
}

.section-dark .feature-card p {
  color: var(--text-on-dark-muted);
}

/* ---------- Stats strip ---------- */
.stats {
  background: var(--bg-alt);
  padding: 80px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-value {
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
  line-height: 1;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ---------- CTA / Newsletter ---------- */
.newsletter {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
  color: white;
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.newsletter::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 212, 164, 0.12) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.newsletter-inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.newsletter h2 {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: white;
}

.newsletter p {
  color: var(--text-on-dark-muted);
  font-size: 18px;
  margin-bottom: 32px;
}

.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 14px 20px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
  color: white;
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.newsletter-form input::placeholder {
  color: var(--text-on-dark-muted);
}

.newsletter-form input:focus {
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.1);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-dark);
  color: var(--text-on-dark-muted);
  padding: 80px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--text-on-dark-muted);
  font-size: 15px;
  max-width: 340px;
  line-height: 1.6;
}

.footer-col h4 {
  color: white;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 12px;
}

.footer-col a {
  color: var(--text-on-dark-muted);
  font-size: 15px;
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
}

.footer-social {
  display: flex;
  gap: 14px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-on-dark-muted);
  transition: background 0.2s ease, color 0.2s ease;
}

.footer-social a:hover {
  background: var(--primary);
  color: var(--bg-dark);
}

/* ---------- Coming soon page ---------- */
.coming-soon {
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-dark);
  color: white;
  text-align: center;
  padding: 80px 24px;
  position: relative;
  overflow: hidden;
}

.coming-soon::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(0, 212, 164, 0.14) 0%, transparent 65%);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.coming-soon-inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.coming-soon .eyebrow {
  margin-bottom: 28px;
}

.coming-soon h1 {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 20px;
}

.coming-soon h1 .accent {
  background: linear-gradient(120deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.coming-soon p {
  font-size: 19px;
  color: var(--text-on-dark-muted);
  margin-bottom: 40px;
  line-height: 1.55;
}

.coming-soon .back-home {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
}

.coming-soon .back-home:hover {
  color: white;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 24px;
  }

  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .section {
    padding: 80px 0;
  }
}

@media (max-width: 720px) {
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 4px;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .nav-toggle {
    display: block;
  }

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

  .hero {
    padding: 80px 0 100px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta .btn {
    justify-content: center;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}