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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial,
    sans-serif;
  background: #000;
  color: #fff;
  overflow-x: hidden;
}

nav {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
}

.logo {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 0.2rem;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.1rem;
  text-transform: uppercase;
  transition: opacity 0.3s;
}

.nav-links a:hover {
  opacity: 0.6;
}

.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  z-index: 2;
  padding: 0 2rem;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 300;
  letter-spacing: 0.3rem;
  text-transform: uppercase;
  margin-bottom: 3rem;
  opacity: 0.8;
}

.cta-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 1.2rem 3rem;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15rem;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: #fff;
  color: #000;
}

.btn-primary:hover {
  background: #000;
  color: #fff;
  box-shadow: inset 0 0 0 2px #fff;
}

.btn-secondary {
  background: transparent;
  color: #fff;
  box-shadow: inset 0 0 0 2px #fff;
}

.btn-secondary:hover {
  background: #fff;
  color: #000;
}

.features {
  padding: 4rem 3rem;
  background: #fff;
  color: #000;
}

.section-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  text-align: center;
  margin-bottom: 5rem;
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 4rem;
  max-width: 1400px;
  margin: 0 auto;
}

.feature-card {
  text-align: center;
}

.feature-icon {
  font-size: 4rem;
  margin-bottom: 2rem;
}

.feature-card h3 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.feature-card p {
  font-size: 1rem;
  line-height: 1.6;
  opacity: 0.7;
}

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 50vh;
}

.split-content {
  padding: 6rem 4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.split-left {
  background: #000;
  color: #fff;
}

.split-right {
  background: #fff;
  color: #000;
}

.split-content h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 900;
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

.split-content p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 2rem;
  opacity: 0.8;
}

.split-content ul {
  list-style: none;
  margin-bottom: 3rem;
}

.split-content li {
  font-size: 1.1rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.split-right li {
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.split-content li::before {
  content: "→ ";
  font-weight: 900;
  margin-right: 0.5rem;
}

.final-cta {
  background: #fff;
  color: #000;
  padding: 8rem 3rem;
  text-align: center;
}

.final-cta h2 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 900;
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

.final-cta p {
  font-size: 1.2rem;
  margin-bottom: 3rem;
  opacity: 0.7;
}

.email-collection {
  max-width: 600px;
  margin: 3rem auto 0;
}

.email-form {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.email-input {
  flex: 1;
  padding: 1.2rem 1.5rem;
  font-size: 1rem;
  border: 2px solid #000;
  background: #fff;
  color: #000;
  font-family: inherit;
  letter-spacing: 0.05rem;
}

.email-input:focus {
  outline: none;
  border-color: #000;
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.email-input::placeholder {
  color: rgba(0, 0, 0, 0.4);
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.1rem;
}

.btn-submit {
  padding: 1.2rem 3rem;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15rem;
  border: none;
  cursor: pointer;
  background: #000;
  color: #fff;
  transition: all 0.3s;
  white-space: nowrap;
}

.btn-submit:hover {
  background: #fff;
  color: #000;
  box-shadow: inset 0 0 0 2px #000;
}

.email-subtitle {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 1rem;
}

.success-message {
  display: none;
  background: #000;
  color: #fff;
  padding: 1.5rem;
  margin-top: 2rem;
  font-size: 1rem;
  letter-spacing: 0.1rem;
  text-transform: uppercase;
}

.success-message.show {
  display: block;
}

footer {
  background: #000;
  padding: 4rem 3rem 2rem;
  text-align: center;
}

.footer-links {
  display: flex;
  gap: 3rem;
  justify-content: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: #fff;
  text-decoration: none;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.1rem;
  opacity: 0.6;
  transition: opacity 0.3s;
}

.footer-links a:hover {
  opacity: 1;
}

.copyright {
  opacity: 0.4;
  font-size: 0.85rem;
  margin-top: 2rem;
}

@media (max-width: 968px) {
  nav {
    padding: 1rem 1.5rem;
  }

  .nav-links {
    gap: 1.5rem;
    font-size: 0.8rem;
  }

  .split-section {
    grid-template-columns: 1fr;
  }

  .split-content {
    padding: 4rem 2rem;
  }

  .features {
    padding: 5rem 2rem;
  }

  .final-cta {
    padding: 5rem 2rem;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }

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

  .btn-submit {
    width: 100%;
  }
}