* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

body {
  background: #f6f7fb;
  color: #1c1c1c;
}

.nav {
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
}

.logo {
  font-size: 22px;
  font-weight: 700;
}
.logo span {
  color: #0aa89e;
}

.nav-btn {
  background: #0aa89e;
  color: #fff;
  padding: 10px 22px;
  border-radius: 30px;
  text-decoration: none;
}

.hero {
  min-height: 90vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
}
.hero span {
  color: #4b5cff;
}

.hero p {
  margin: 20px 0;
  color: #555;
}

.btn {
  padding: 14px 30px;
  border-radius: 40px;
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
}

.primary {
  background: linear-gradient(90deg, #0aa89e, #4b5cff);
  color: #fff;
}

.trust {
  display: flex;
  justify-content: space-around;
  padding: 20px;
  background: #ffffff;
}

.ebooks {
  padding: 70px 10%;
  text-align: center;
}

.ebook-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
  gap: 30px;
  margin-top: 40px;
}

.ebook-card {
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(15px);
  padding: 25px;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.features {
  padding: 70px 10%;
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
  gap: 20px;
  margin-top: 30px;
}

.feature-grid div {
  background: #fff;
  padding: 20px;
  border-radius: 16px;
}

.cta {
  padding: 80px 10%;
  text-align: center;
  background: linear-gradient(120deg, #f0f9ff, #e6fffa);
}

footer {
  padding: 20px;
  text-align: center;
  background: #fff;
  color: #777;
}

@media(max-width:768px) {
  .hero h1 {
    font-size: 2.2rem;
  }
}