/* 基础样式 */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #f8fafc;
  color: #334155;
  padding: 0 20px;
}

/* 页面标题样式 */
.page-title {
  text-align: center;
  margin: 40px auto 20px;
  color: #1e293b;
  font-size: 32px;
  font-weight: 600;
  background: linear-gradient(120deg, #3498db, #2dd4bf);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  padding: 0 20px;
  font-size: clamp(24px, 5vw, 32px);
  margin: 30px auto 15px;
  padding: 0 15px;
}

.subtitle {
  text-align: center;
  color: #64748b;
  font-size: 16px;
  margin-bottom: 40px;
  font-weight: normal;
  font-size: clamp(14px, 3vw, 16px);
  margin-bottom: 30px;
  padding: 0 15px;
}

/* 预测依据样式 */
.prediction-basis {
  max-width: 900px;
  margin: 0 auto 40px;
  padding: 20px;
  background: rgba(52, 152, 219, 0.05);
  border-radius: 12px;
  border-left: 4px solid #3498db;
}

.prediction-basis h3 {
  margin: 0 0 15px;
  color: #1e293b;
  font-size: 18px;
}

.prediction-basis ul {
  margin: 0;
  padding-left: 20px;
  list-style-type: none;
}

.prediction-basis li {
  margin: 10px 0;
  color: #475569;
  line-height: 1.6;
}

.prediction-basis strong {
  color: #3498db;
}

@media (max-width: 768px) {
  .prediction-basis {
    margin: 0 15px 30px;
    padding: 15px;
  }
}

/* 时间线容器 */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 40px auto;
  padding: 20px 0;
}

.timeline::after {
  content: "";
  position: absolute;
  width: 4px;
  background: linear-gradient(to bottom, #3498db 60%, transparent);
  top: 0;
  height: calc(100% - 160px);
  left: 50%;
  margin-left: -2px;
}

/* 时间线项目容器 */
.container {
  padding: 5px 10px;
  position: relative;
  background-color: inherit;
  width: 50%;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s ease-out;
}

.container.left {
  left: 0;
}

.container.right {
  left: 50%;
}

/* 内容卡片样式 */
.content {
  padding: 20px;
  background-color: white;
  position: relative;
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  padding: clamp(15px, 3vw, 20px);
}

.content:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.container.left .content {
  margin-right: 60px;
}

.container.right .content {
  margin-left: 60px;
}

/* 时间点和连接线 */
.container.left::before,
.container.right::before {
  content: "";
  height: 8px;
  width: 8px;
  background-color: #3498db;
  position: absolute;
  top: 15px;
  border-radius: 50%;
  z-index: 1;
  animation: pulse 2s infinite;
  border: 2px solid white;
  box-shadow: 0 0 0 2px #3498db;
}

.container.left::after,
.container.right::after {
  content: "";
  position: absolute;
  top: 18px;
  width: 60px;
  height: 2px;
  border-top: 2px dashed rgba(52, 152, 219, 0.3);
}

.container.left::after {
  right: 10px;
}

.container.right::after {
  left: 10px;
}

/* 标题样式 */
h2 {
  margin: 0;
  font-size: 18px;
  color: #1e293b;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: clamp(16px, 4vw, 18px);
}

h2::before {
  content: attr(data-year);
  font-size: 14px;
  font-weight: normal;
  color: #3498db;
  background: rgba(52, 152, 219, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
}

/* 内容详情样式 */
.content-details {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.tech-stack {
  font-size: 13px;
  color: #64748b;
  padding: 4px 0;
  font-size: clamp(12px, 3vw, 13px);
  line-height: 1.5;
}

.metrics {
  font-size: 13px;
  color: #0f766e;
  background: #f0fdfa;
  padding: 6px 12px;
  border-radius: 6px;
  border-left: 3px solid #2dd4bf;
  font-size: clamp(12px, 3vw, 13px);
  line-height: 1.5;
}

.tag {
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  margin-right: 6px;
  background: #e2e8f0;
  color: #475569;
}

/* 二维码容器 */
.qr-container {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 20px 0;
}

.qr-code {
  width: 120px;
  height: 120px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  background-color: white;
  padding: 8px;
}

/* 动画效果 */
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(52, 152, 219, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(52, 152, 219, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(52, 152, 219, 0);
  }
}

.container.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .timeline {
    padding: 15px;
    margin: 20px auto;
  }

  .timeline::after {
    left: 20px;
  }

  .container {
    width: 100%;
    padding-left: 35px;
    padding-right: 10px;
  }

  .container.left,
  .container.right {
    left: 0;
  }

  .container.left .content,
  .container.right .content {
    margin: 10px 0;
  }

  .container.left::before,
  .container.right::before {
    left: 12px;
  }

  .container.left::after,
  .container.right::after {
    left: 20px;
    width: 30px;
  }

  .content-details {
    gap: 10px;
  }

  .metrics {
    padding: 8px 10px;
  }

  .tag {
    margin-bottom: 4px;
  }

  .qr-code {
    width: 100px;
    height: 100px;
  }

  body {
    padding: 0 15px;
  }
}

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

  .content {
    padding: 12px;
  }

  .metrics {
    padding: 6px 8px;
  }

  h2::before {
    font-size: 12px;
    padding: 1px 6px;
  }

  body {
    padding: 0 10px;
  }
}

/* 固定链接样式 */
.jike-link {
  position: fixed;
  top: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: white;
  border-radius: 8px;
  color: #3498db;
  text-decoration: none;
  font-size: 12px;
  transition: all 0.3s ease;
  border: 1px solid rgba(52, 152, 219, 0.2);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  z-index: 100;
}

.jike-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  background: rgba(52, 152, 219, 0.05);
}

.github-link {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 100;
}

.github-link a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: #1e293b;
  border-radius: 8px;
  color: white;
  text-decoration: none;
  font-size: 12px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.github-link a:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  background: #334155;
}

.link-icon {
  width: 20px;
  height: 20px;
}

@media (max-width: 768px) {
  .jike-link {
    top: 10px;
    right: 10px;
    padding: 4px 10px;
    font-size: 11px;
  }

  .github-link {
    bottom: 10px;
    right: 10px;
  }

  .github-link a {
    padding: 4px 10px;
    font-size: 11px;
  }
}