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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #333;
  background: #fff;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  background: #fff;
  border-bottom: 1px solid #eaeaea;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: #333;
  text-decoration: none;
}

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

.nav-links a {
  color: #666;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: #333;
}

.hero {
  background: #f8f9fa;
  padding: 100px 0;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  color: #333;
}

.hero-subtitle {
  font-size: 18px;
  color: #666;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  background: #333;
  color: #fff;
  padding: 12px 30px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.3s;
}

.btn:hover {
  background: #555;
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: #f8f9fa;
}

.section h2 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 40px;
  text-align: center;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.service-card {
  background: #fff;
  padding: 30px;
  border-radius: 8px;
  border: 1px solid #eaeaea;
  transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.service-card h3 {
  font-size: 20px;
  margin-bottom: 15px;
  color: #333;
}

.service-card p {
  color: #666;
  font-size: 14px;
}

.contact-form {
  max-width: 500px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-form input,
.contact-form textarea {
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #333;
}

.form-message {
  text-align: center;
  margin-top: 15px;
  font-size: 14px;
  color: #666;
}

.footer {
  background: #333;
  color: #fff;
  padding: 30px 0;
  text-align: center;
}

.footer p {
  font-size: 14px;
  color: #aaa;
}

@media (max-width: 768px) {
  .nav-links {
    gap: 15px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .section {
    padding: 50px 0;
  }
}