/* 下载主区域 */
.download-main {
  padding: 100px 0 60px;
}

.download-main h1 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 10px;
  color: var(--text-color);
}

.download-main .subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: var(--light-text);
  margin-bottom: 40px;
}

/* 平台选择器 */
.platform-selector {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 40px;
}

.platform {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 25px;
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.platform:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.platform.active {
  border-color: var(--primary-color);
  background-color: rgba(66, 133, 244, 0.05);
}

.platform img {
  height: 40px;
  margin-bottom: 10px;
}

.platform span {
  font-weight: 500;
  color: var(--text-color);
}

/* 下载内容区域 */
.download-content {
  display: none;
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 40px;
  margin-bottom: 40px;
}

.download-content.active {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.download-info {
  flex: 1;
  padding-right: 40px;
}

.download-info h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--text-color);
}

.version-box {
  background-color: rgba(66, 133, 244, 0.1);
  padding: 15px;
  border-radius: var(--border-radius);
  margin-bottom: 20px;
}

.version-box span {
  display: block;
  margin-bottom: 5px;
  font-size: 0.95rem;
  color: var(--text-color);
}

.version-box span:last-child {
  margin-bottom: 0;
}

.system-requirements {
  font-size: 0.95rem;
  color: var(--light-text);
  margin-bottom: 30px;
}

.btn-download-large {
  display: inline-block;
  background-color: var(--primary-color);
  color: var(--white);
  padding: 16px 32px;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 1.1rem;
  box-shadow: 0 4px 12px rgba(66, 133, 244, 0.3);
  margin-bottom: 20px;
  transition: var(--transition);
}

.btn-download-large:hover {
  background-color: #3367d6;
  box-shadow: 0 6px 16px rgba(66, 133, 244, 0.4);
  color: var(--white);
}

.note {
  font-size: 0.85rem;
  color: var(--light-text);
}

.note a {
  color: var(--light-text);
  text-decoration: underline;
}

.download-image {
  flex: 1;
  text-align: center;
}

.download-image img {
  max-height: 300px;
  border-radius: var(--border-radius);
}

/* 安装步骤 */
.download-steps {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 30px;
  margin-bottom: 40px;
}

.download-steps h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: var(--text-color);
}

.download-steps ol {
  padding-left: 20px;
}

.download-steps li {
  margin-bottom: 10px;
  color: var(--text-color);
}

/* FAQ区域 */
.download-faq {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 40px;
}

.download-faq h2 {
  font-size: 1.8rem;
  margin-bottom: 30px;
  color: var(--text-color);
}

.faq-item {
  margin-bottom: 20px;
  border-bottom: 1px solid #eee;
  padding-bottom: 20px;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  font-size: 1.2rem;
  color: var(--text-color);
  margin-bottom: 15px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question:after {
  content: '+';
  font-size: 1.5rem;
  color: var(--primary-color);
}

.faq-question.active:after {
  content: '-';
}

.faq-answer {
  display: none;
  padding: 10px 0;
  color: var(--light-text);
}

.faq-answer p {
  margin-bottom: 10px;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .download-content.active {
    flex-direction: column;
  }
  
  .download-info {
    padding-right: 0;
    margin-bottom: 30px;
  }
  
  .download-image img {
    max-height: 250px;
  }
}

@media (max-width: 576px) {
  .download-main {
    padding: 80px 0 40px;
  }
  
  .download-main h1 {
    font-size: 2rem;
  }
  
  .platform {
    padding: 15px;
    width: calc(50% - 10px);
  }
  
  .download-content {
    padding: 25px;
  }
  
  .btn-download-large {
    width: 100%;
    text-align: center;
  }
}
/* 确保FAQ答案初始隐藏 */
.faq-answer {
  display: none;
  padding: 0 10px 15px;
  animation: fadeIn 0.3s ease-out;
}

.faq-answer.active {
  display: block;
}

/* 平台内容切换动画 */
.download-content {
  opacity: 0;
  height: 0;
  overflow: hidden;
  transition: opacity 0.3s ease, height 0.3s ease;
}

.download-content.active {
  opacity: 1;
  height: auto;
  padding: 40px;
}

/* FAQ问题指示器 */
.faq-question {
  position: relative;
  padding-right: 30px;
}

.faq-question:after {
  content: '+';
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--primary-color);
  transition: transform 0.3s ease;
}

.faq-question.active:after {
  content: '-';
  transform: translateY(-50%) rotate(180deg);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}