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

body{
  background:#ffffff;
  color:#111;
}

header{
  position:fixed;
  width:100%;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,0.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid #eee;
}

nav{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:20px 8%;
}

.logo{
  width:140px;
}

nav ul{
  display:flex;
  gap:30px;
  list-style:none;
}

nav a{
  text-decoration:none;
  color:#111;
  font-weight:bold;
}

.hero{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:150px 8%;
  gap:50px;
}

.hero-text{
  flex:1;
}

.hero-text h1{
  font-size:4rem;
  margin-bottom:20px;
}

.hero-text p{
  color:#555;
  line-height:1.7;
  margin-bottom:30px;
  max-width:600px;
}

.hero-buttons{
  display:flex;
  gap:20px;
}

button{
  padding:16px 32px;
  border:none;
  border-radius:12px;
  background:#e30000;
  color:white;
  font-size:1rem;
  cursor:pointer;
  transition:0.3s;
}

.secondary{
  background:#111;
}

button:hover{
  transform:translateY(-3px);
}

.hero-phone img{
  width:320px;
  border-radius:40px;
  box-shadow:0 20px 60px rgba(0,0,0,0.2);
}

.features,
.preview,
.how,
.download{
  padding:120px 8%;
}

h2{
  font-size:3rem;
  margin-bottom:50px;
  text-align:center;
}

.feature-grid,
.preview-grid,
.steps{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:30px;
}

.feature-card,
.step{
  background:white;
  padding:40px;
  border-radius:25px;
  box-shadow:0 10px 30px rgba(0,0,0,0.08);
}

.feature-card h3,
.step h3{
  margin-bottom:15px;
}

.preview-grid img{
  width:100%;
  border-radius:30px;
  box-shadow:0 10px 30px rgba(0,0,0,0.1);
}

.step span{
  width:50px;
  height:50px;
  background:#e30000;
  color:white;
  display:flex;
  justify-content:center;
  align-items:center;
  border-radius:50%;
  margin-bottom:20px;
  font-weight:bold;
}

.download{
  text-align:center;
}

footer{
  padding:80px 8%;
  text-align:center;
  border-top:1px solid #eee;
}

.footer-logo{
  width:120px;
  margin-bottom:20px;
}

@media(max-width:900px){

  .hero{
    flex-direction:column;
    text-align:center;
  }

  .hero-buttons{
    justify-content:center;
  }

  nav ul{
    display:none;
  }

  .hero-text h1{
    font-size:3rem;
  }

}
.ai-section{
  padding:120px 8%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:60px;
}

.ai-text{
  flex:1;
}

.ai-text h2{
  font-size:3rem;
  margin-bottom:25px;
}

.ai-text p{
  color:#555;
  line-height:1.8;
  margin-bottom:30px;
  max-width:600px;
}

.ai-points{
  display:flex;
  flex-direction:column;
  gap:20px;
}

.ai-point{
  background:white;
  padding:20px;
  border-radius:18px;
  box-shadow:0 10px 30px rgba(0,0,0,0.08);
  font-weight:bold;
}

.ai-image{
  flex:1;
  display:flex;
  justify-content:center;
}

.ai-image img{
  width:350px;
  border-radius:35px;
  box-shadow:0 20px 60px rgba(0,0,0,0.15);
}

@media(max-width:900px){

  .ai-section{
    flex-direction:column;
    text-align:center;
  }

}