body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background: linear-gradient(to right, #eef2f3, #dfe9f3);
      padding: 50px;
      max-width: 1200px;
      margin: 0 auto;
      line-height: 1.6;
      opacity: 0;
      animation: pageFade 0.6s ease forwards;
    }
h1 {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

h2 {
  color: #2c3e50;
  font-size: 30px;
  font-weight: 600;
  margin-top: 10px;
  margin-bottom: 10px;
}
.hero {
  padding: 60px 40px;
}
.subtitle {
  font-size: 20px;
  color: #666;
  margin-top: 10px;
  margin-bottom: 25px;
}
.micro-text {
  font-size: 14px;
  color: #888;
  margin-bottom: 20px;
}
.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}
.btn.secondary {
  background: white;
  color: #3498db;
  border: 2px solid #3498db;
}

.btn.secondary:hover {
  background: #3498db;
  color: white;
}
p {
  font-size: 18px;
  color: #555;
}
 .btn {
  display: inline-block;
  background: linear-gradient(135deg, #3498db, #2980b9);
  color: white;
  padding: 14px 26px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
  letter-spacing: 0.3px;
  box-shadow: 0 4px 12px rgba(52,152,219,0.3);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0,0,0,0.15);
}

.section {
  background: white;
  margin: 40px auto;
  margin-bottom: 30px;
  padding: 40px;
  border-radius: 16px;
  width: 90%;
  max-width: 800px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  text-align: left;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}
.section:nth-child(1) { animation-delay: 0.1s; }
.section:nth-child(2) { animation-delay: 0.2s; }
.section:nth-child(3) { animation-delay: 0.3s; }
.section:nth-child(4) { animation-delay: 0.4s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes pageFade {
  to {
    opacity: 1;
  }
}
.section:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 35px rgba(0,0,0,0.12);
}   
.section:first-of-type {
  text-align: center;
}
.section:not(:last-child) {
  border-bottom: 1px solid #eee;
}
.section + .section {
  margin-top: 30px;
}
a {
  color: #3498db;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

a:hover {
  text-decoration: underline;
}

.copy-btn {
  background: none;
  border: none;
  color: #3498db;
  font-weight: 500;
  cursor: pointer;
  font-size: 20px;
  padding: 0;
  font-family: inherit;
  appearance: none;
  -webkit-appearance: none;
  -webkit-tap-highlight-color: transparent;
}
.copy-btn:hover {
  text-decoration: underline;
}
.copy-btn:focus {
  outline: 2px solid #d3d3d3;
  border-radius: 4px;
}
nav {
  background: rgba(44, 62, 80, 0.9);
  padding: 18px;
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}
nav a {
  color: white;
  margin: 0 18px;
  font-weight: bold;
  text-decoration: none;
  position: relative;
}
nav a:hover {
  text-decoration: none;
  color: #ecf0f1;
}
nav a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  background: white;
  left: 0;
  bottom: -5px;
  transition: 0.3s;
}

nav a:hover::after {
  width: 100%;
}
nav a.active {
  color: #f1c40f;
}
html {
  scroll-behavior: smooth;
}

@media (max-width: 600px) {
  h1 {
    font-size: 32px;
  }

  h2 {
    font-size: 24px;
  }
  body {
    padding: 20px;
  }

  p {
    font-size: 18px;
  }
  nav {
    text-align: center;
  }
  nav a {
    display: block;
    margin: 12px 0;
  }
  .section {
    padding: 25px;
  }
  button {
    width: 100%;
  }
  .hero {
  padding: 80px 40px;
}

.subtitle {
  font-size: 18px;
}
}