body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f4f6f8;
  margin: 0;
  padding: 0;
  color: #333;
}
.back-link {
  display: block;
  text-align: center;
  margin-bottom: 20px;
  text-decoration: none;
  color: #2563eb;
  font-weight: bold;
}
.back-link:hover {
  text-decoration: underline;
}
.container {
  max-width: 1000px;
  margin: 40px auto;
  background: #ffffff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}
h1 {
  text-align: center;
  color: #1f2937;
  margin-bottom: 5px;
}
.subtitle {
  text-align: center;
  color: #6b7280;
  margin-bottom: 40px;
}
.achievement {
  background: #f9fafb;
  padding: 20px;
  margin-bottom: 25px;
  border-left: 6px solid #2563eb;
  border-radius: 8px;
}
.achievement h2 {
  margin-top: 0;
  color: #111827;
  font-size: 20px;
}
.achievement p {
  margin: 8px 0;
  line-height: 1.6;
  font-size: 15px;
}
.meta {
  color: #6b7280;
  font-size: 14px;
}
.docs a {
  display: inline-block;
  margin-right: 15px;
  margin-top: 10px;
  text-decoration: none;
  color: #2563eb;
  font-weight: bold;
}
.docs a:hover {
  text-decoration: underline;
}
footer {
  text-align: center;
  margin-top: 40px;
  font-size: 14px;
  color: #6b7280;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    margin: 20px;
    padding: 20px;
  }
  h1 {
    font-size: 24px;
  }
  .achievement {
    padding: 15px;
  }
  .achievement h2 {
    font-size: 18px;
  }
  .achievement p {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .container {
    margin: 10px;
    padding: 15px;
  }
  h1 {
    font-size: 20px;
  }
  .subtitle {
    font-size: 14px;
  }
  .achievement h2 {
    font-size: 16px;
  }
  .achievement p {
    font-size: 13px;
  }
  .meta {
    font-size: 12px;
  }
}