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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #ffffff;
  color: #333;
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

/* Header */
header {
  background: #1a1a1a;
  color: #fff;
  padding: 20px 0;
}

header h1 {
  float: left;
}

nav ul {
  list-style: none;
  float: right;
  display: flex;
  gap: 20px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  padding: 8px 12px;
  transition: 0.3s;
}

nav ul li a:hover,
nav ul li a.active {
  background: #f4f4f4;
  color: #1a1a1a;
  border-radius: 4px;
}

/* Hero */
.hero {
  background: #f9f9f9;
  padding: 80px 20px;
  text-align: center;
}

.hero h2 {
  font-size: 36px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  margin-bottom: 30px;
}

.btn {
  background: #1a1a1a;
  color: #fff;
  padding: 12px 25px;
  text-decoration: none;
  border-radius: 4px;
}

.btn:hover {
  background: #333;
}

/* Features */
.features {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 60px 20px;
}

.feature-box {
  flex: 1 1 30%;
  background: #f4f4f4;
  margin: 10px;
  padding: 20px;
  border-radius: 8px;
  transition: 0.3s ease;
}

.feature-box:hover {
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

/* Footer */
footer {
  background: #1a1a1a;
  color: #fff;
  text-align: center;
  padding: 15px 0;
  margin-top: 50px;
}

/* Responsive */
@media (max-width: 768px) {
  nav ul {
    flex-direction: column;
    text-align: center;
  }

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

  .feature-box {
    width: 100%;
  }
}