body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  margin: 0;
  background-color: #f8f9fa;
  color: #333;
}

.top-bar {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid #eee;
  background: #fff;
  font-size: 16px;
  font-weight: bold;
}

.back-btn {
  color: #333;
  font-size: 18px;
  margin-right: 12px;
}

.container {
  padding: 14px;
}

.card {
  background: #fff;
  border-radius: 8px;
  padding: 14px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
  font-size: 14px;
}

.card img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 14px;
}

.card h4 {
  font-size: 16px;
  margin-bottom: 10px;
}

.card p {
  font-size: 13px;
  margin-bottom: 8px;
}

.card a {
  color: #007bff;
  text-decoration: none;
  font-weight: 500;
}

.card a:hover {
  text-decoration: underline;
}

.task-step {
  background: #f9f9f9;
  border: 1px solid #e6e6e6;
  border-radius: 6px;
  padding: 10px;
  margin-bottom: 12px;
}

.task-step img {
  max-height: 120px;
  border-radius: 6px;
  margin-top: 6px;
}

.btn-accept {
  width: 100%;
  padding: 12px;
  margin-top: 20px;
  font-size: 15px;
  font-weight: bold;
  border: none;
  border-radius: 6px;
  background-color: #ff9800;
  color: white;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-accept:hover:not([disabled]) {
  background-color: #e08800;
}

.btn-accept[disabled] {
  background-color: #ccc;
  color: #666;
  cursor: not-allowed;
}

@media (max-width: 480px) {
  .container {
    padding: 10px;
  }

  .card {
    font-size: 13px;
  }

  .card h4 {
    font-size: 15px;
  }

  .btn-accept {
    font-size: 14px;
    padding: 10px;
  }
}