body {
  font-family: "Linux Libertine", "Times New Roman", serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  background-color: white;
  min-height: 100vh;
}

header {
  text-align: center;
  margin-bottom: 3rem;
}

.back-link {
  display: block;
  margin-bottom: 1rem;
  color: #0000ff;
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.2s;
}

.back-link:hover {
  text-decoration: underline;
}

h1 {
  font-size: 3rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  color: #202122;
}

h1 span {
  color: blue;
  text-decoration: underline;
}

h2 {
  font-size: 1.5rem;
  font-weight: 400;
  margin-top: 0;
  color: #202122;
}

main {
  color: #202122;
}

section {
  margin-bottom: 1rem;
}

.intro {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 1.5rem;
  color: #202122;
}

.step {
  margin-bottom: 1.5rem;
}

.step h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #202122;
}

.step p {
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
}

.steps {
  margin-bottom: 0;
}

.screenshot-container {
  margin-top: 1.5rem;
}

.screenshot {
  max-width: 100%;
  height: auto;
  border: 1px solid #c8ccd1;
  border-radius: 6px;
}

.tips h3 {
  margin-top: 0;
}

.tips ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin: 0;
}

.tips li {
  font-size: 1rem;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.cta {
  text-align: center;
  margin-top: 3rem;
  margin-bottom: 2rem;
}

.play-button {
  display: inline-block;
  background-color: #0000dd;
  color: white;
  font-size: 1.5rem;
  padding: 1rem 8rem;
  border-radius: 5px;
  text-decoration: none;
}

.play-button:active {
  transform: translateY(0);
}

/* Mobile styles */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.2rem;
  }

  h3 {
    font-size: 1.3rem;
  }

  .content-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .intro {
    font-size: 1rem;
  }

  .step h4 {
    font-size: 1rem;
  }

  .step p {
    font-size: 0.95rem;
  }

  .tips li {
    font-size: 0.95rem;
  }

  .play-button {
    font-size: 1.25rem;
    padding: 1rem 0;
    width: 100%;
    margin: 0 auto;
    max-width: 300px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.1rem;
  }
}