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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: #08080c;
  color: #e2e8f0;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  border-bottom: 1px solid #1a1c28;
  background: #0a0b10;
  position: relative;
}

.nav-back {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #7a8ba8;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-back:hover {
  color: #2bb5a0;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 8px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-center-logo {
  width: 22px;
  height: 22px;
}

.nav-center-name {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #e2e8f0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #4e5d73;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.nav-logo {
  width: 24px;
  height: 24px;
  opacity: 0.7;
}

.landing-container {
  flex: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
}

.hero {
  text-align: center;
  padding: 80px 0 60px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  background: rgba(43, 181, 160, 0.1);
  border: 1px solid rgba(43, 181, 160, 0.25);
  color: #2bb5a0;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}

.hero-logo {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  opacity: 0.85;
  filter: drop-shadow(0 0 14px rgba(43, 181, 160, 0.25));
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: #f0f4f8;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #f0f4f8 0%, #2bb5a0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: #7a8ba8;
  font-weight: 500;
  margin-bottom: 16px;
}

.hero-description {
  font-size: 0.95rem;
  color: #4e5d73;
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: #2bb5a0;
  color: #fff;
  text-decoration: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(43, 181, 160, 0.3);
}

.cta-button:hover {
  background: #33c9b2;
  box-shadow: 0 6px 28px rgba(43, 181, 160, 0.45);
  transform: translateY(-1px);
}

.cta-button:active {
  transform: translateY(0) scale(0.98);
}

.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding-bottom: 80px;
}

.feature-card {
  background: #0f1017;
  border: 1px solid #1a1c28;
  border-radius: 14px;
  padding: 28px 24px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  border-color: rgba(43, 181, 160, 0.3);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  color: #2bb5a0;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #e2e8f0;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.82rem;
  color: #4e5d73;
  line-height: 1.6;
}

.landing-footer {
  border-top: 1px solid #1a1c28;
  background: #0a0b10;
  padding: 24px 32px;
}

.footer-content {
  max-width: 1100px;
  margin: 0 auto;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-logo {
  width: 28px;
  height: 28px;
  opacity: 0.6;
}

.footer-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-product {
  font-size: 0.85rem;
  font-weight: 700;
  color: #7a8ba8;
  letter-spacing: 0.06em;
}

.footer-company {
  font-size: 0.75rem;
  color: #3a4459;
}

@media (max-width: 1023px) {
  .features {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 767px) {
  .top-nav {
    padding: 14px 16px;
  }

  .landing-container {
    padding: 0 16px;
  }

  .hero {
    padding: 48px 0 40px;
  }

  .hero-logo {
    width: 36px;
    height: 36px;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .features {
    grid-template-columns: 1fr;
    gap: 14px;
    padding-bottom: 48px;
  }

  .feature-card {
    padding: 22px 20px;
  }

  .landing-footer {
    padding: 20px 16px;
  }
}