.container01 {
      max-width: 1400px;
      margin:186px auto;
  
       
    }


/* 标题样式 */
.header {
  margin-bottom: 60px;
}

.main-title {
  font-size: 88px;
  font-weight: bold;
  margin-bottom: 5px;
  line-height: 1.2;
}

.year-15 {
  color: #000;
  margin-right: 5px;
}

.glory {
  color: #ff7733;
  
}

.sub-title {
    font-size: 50px;
    font-weight: bold;
    color: #222;
    margin-top: 13px;
    /* padding-right: 8px; */
    margin: 4px;
}

/* 时间线网格 */
.timeline-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  grid-gap: 30px;
  margin-top: 80px;
  
}

/* 证书样式 */
.certificate {
  grid-column: 1;
  grid-row: 1 / span 2;
  position: relative;
  padding: 0;
      padding-left: 21px;
}


.certificate img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* 年份块样式 */
.year-block {
  padding: 0 0 0 15px;
  position: relative;
  margin: -33px 0 0 69px;
}

.year-block:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 1px;
  background-color: #e0e0e0;
}

.year {
  font-size: 88px;
  font-weight: bold;
  margin-bottom: 20px;
  color: #000;
}

.content {
  font-size: 18px;
  line-height: 1.8;
}

.content p {
  margin-bottom: 6px;
  font-size: 24px;
}

/* 年份位置 */
.year-2025 {
  grid-column: 2;
  grid-row: 1;
  
}

.year-2024 {

  grid-row: 1;
   padding: 0 0 0 15px;
  position: relative;
  margin: -33px 0 0 69px;
}

.year-2023 {
  grid-column: 2;
  grid-row: 2;
   padding: 0 0 0 15px;
  position: relative;
  margin: -33px 0 0 69px;
}

.year-2022 {
 
  grid-row: 2;
   padding: 0 0 0 15px;
  position: relative;
  margin: -33px 0 0 69px;
}

.year-2021 {
  grid-column: 1;
  grid-row: 3;
   padding: 0 0 0 15px;
  position: relative;
  margin: -33px 0 0 69px;
}

.year-2020 {
  grid-column: 2;
  grid-row: 3;
   padding: 0 0 0 15px;
  position: relative;
  margin: -33px 0 0 69px;
}

.year-2017 {
  grid-column: 3;
  grid-row: 3;
   padding: 0 0 0 15px;
  position: relative;
  margin: -33px 0 0 69px;
}

.year-2010 {
  grid-column: 4;
  grid-row: 3;
   padding: 0 0 0 15px;
  position: relative;
  margin: -33px 0 0 69px;
}

/* 高亮文本 */
.highlight-orange {
  color: #ff7733;
  font-weight: bold;
}

.highlight {
  font-weight: bold;
}

/* 分隔线 */
.divider {
  
  height: 1px;
  background-color: #999999;
  margin: 25px 0;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .timeline-grid {
    grid-template-columns: 1fr 1fr;
    grid-gap: 20px;
  }
  
  .certificate {
    grid-column: 1 / span 2;
    grid-row: 1;
  }
  
  .year-2025, .year-2023, .year-2021, .year-2017 {
    grid-column: 1;
  }
  
  .year-2024, .year-2022, .year-2020, .year-2010 {
    grid-column: 2;
  }
  
  .year-2025, .year-2024 {
    grid-row: 2;
  }
  
  .year-2023, .year-2022 {
    grid-row: 3;
  }
  
  .year-2021, .year-2020 {
    grid-row: 4;
  }
  
  .year-2017, .year-2010 {
    grid-row: 5;
  }
}

@media (max-width: 768px) {
  .timeline-grid {
    grid-template-columns: 1fr;
  }
  
  .certificate,
  .year-2025, 
  .year-2024, 
  .year-2023, 
  .year-2022, 
  .year-2021, 
  .year-2020, 
  .year-2017, 
  .year-2010 {
    grid-column: 1;
  }
  
  .certificate {
    grid-row: 1;
  }
  
  .year-2025 {
    grid-row: 2;
  }
  
  .year-2024 {
    grid-row: 3;
  }
  
  .year-2023 {
    grid-row: 4;
  }
  
  .year-2022 {
    grid-row: 5;
  }
  
  .year-2021 {
    grid-row: 6;
  }
  
  .year-2020 {
    grid-row: 7;
  }
  
  .year-2017 {
    grid-row: 8;
  }
  
  .year-2010 {
    grid-row: 9;
  }
  
  .main-title {
    font-size: 40px;
  }
  
  .sub-title {
    font-size: 24px;
  }
  
  .year {
    font-size: 48px;
  }
}