/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "思源雅黑", sans-serif;
}

html, body {
    overflow-x: hidden !important;
    width: 100% !important;
    position: relative !important;
    /*background-image: url(bsdlsbj.png);*/
}

/* 容器 */
.max-width-center {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 分类头部 */
.category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 30px 20px;
    background-color: #fff;
    margin-bottom: 20px;
}

.menu-icon {
    font-size: 24px;
    color: #333;
    cursor: pointer;
    padding: 10px;
}

.header-content {
    text-align: center;
    flex: 1;
}

.header-content h1 {
    font-size: 36px;
    color: #0066cc;
    font-weight: bold;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.category-subtitle {
    display: inline-block;
    padding: 8px 35px;
    border: 1px solid #ddd;
    border-radius: 25px;
    font-size: 14px;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 3px;
}

/* 产品结构区域 */
.product-structure {
    padding: 20px 0;
}

/* 结构标题 */
.structure-title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.structure-title .title-left {
    color: #295FAB;
    display: flex;
    align-items: center;
    gap: 5px;
    margin: 0 10px;
}

/* 结构副标题 */
.structure-subtitle {
    text-align: center;
    margin-bottom: 20px;
    color: #666;
    font-size: 16px;
}

/* 产品导航 */
.product-nav1 {
    background: url(zdzsj.png) no-repeat left 80px top 10px;
    padding: 20px 80px;
}

/* 导航标题 */
.nav-title1 {
    font-size: 26px;
    font-weight: bold;
    margin-bottom: 10px;
    margin-left: 20px;
    letter-spacing: 0.3em;
}

.nav-title1 span {
    color: #fff;
    padding-right: 5px;
}

/* 导航副标题 */
.nav-subtitle1 {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    font-size: 14px;
    margin: 8px 0;
}

.left-group1 {
    display: flex;
    align-items: center;
    gap: 20px;
    padding-left: 20px;
}

.solid-line1 {
    width: 50px;
    height: 5px;
    background-color: #fff;
    color: transparent;
    font-size: 0;
    margin: 0;
    padding: 0;
    line-height: 1;
}

.diameter-text1 {
    font-size: 16px;
}

.note-text1 {
    font-style: italic;
    font-size: 16px;
}

/* 导航网格 */
.nav-grid1 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 0 20px;
}

/* 导航项 */
.nav-item1 {
    background-color: #fff;
    padding: 10px;
    text-align: center;
    border: 1px solid #ddd;
    font-size: 0;
}

.nav-item1 .zdh2 {
    font-size: 28px;
    font-weight: bolder;
    padding: 10px 0;
}

.nav-item1 a {
    display: inline-block;
    padding: 5px 20px;
    background-color: #007bff;
    background: linear-gradient(to bottom, #5E8DDF, #2D6AD1);
    color: #fff;
    text-decoration: none;
    margin-bottom: 5px;
    transition: background-color 0.3s;
    font-size: 14px;
    vertical-align: middle;
}

.nav-item1 a:hover {
    background-color: #0056b3;
}

.nav-item1 span {
    display: inline-block;
    padding: 5px 20px;
    background-color: #ff7b00;
    color: #fff;
    margin-bottom: 5px;
    font-size: 14px;
    vertical-align: middle;
}

/* 结构卡片 */
.structure-card {
    display: flex;
    gap: 20px;
    padding: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

/* 结构图片 */
.structure-img img {
    max-width: 100%;
    height: auto;
}

/* 响应式布局 */
@media (max-width: 768px) {
    .nav-grid1 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-nav1 {
        padding: 20px 20px;
        background-position: left 20px top 10px;
    }
    
    .structure-card {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .nav-grid1 {
        grid-template-columns: 1fr;
    }
}

/* 异形表格 - 环形布局 */
.diagram-container {
    padding: 0;
    background: linear-gradient(180deg, #0056B3 0%, #004499 100%);
    margin-top: 20px;
    width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.diagram-bg {
    position: relative;
    width: 1000px;
    height: 380px;
    margin: 0 auto;
}

/* 顶部标题 */
.top-title {
    text-align: center;
    position: absolute;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.main-title {
    display: block;
    font-size: 44px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 8px;
    letter-spacing: 3px;
}

.sub-title {
    display: block;
    font-size: 24px;
    color: rgba(255, 255, 255, 0.65);
}

/* 中心滑块 */
.center-slider {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    height: 110px;
    background: linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(220,235,255,0.95) 50%, rgba(200,220,255,0.9) 100%);
    border-radius: 140px / 55px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.slider-text {
    font-size: 56px;
    font-weight: bold;
    color: #0066cc;
}

/* 环形轨道 */
.ring-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 620px;
    height: 300px;
}

/* 环形轨道线条 - 外圈 */
.ring-orbit::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 2px dashed rgba(255, 255, 255, 0.25);
    border-radius: 50%;
}

/* 环形轨道线条 - 内圈 */
.ring-orbit::after {
    content: "";
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    border: 2px dashed rgba(255, 255, 255, 0.25);
    border-radius: 50%;
}

/* 环形箭头标记 */
.ring-orbit .orbit-arrow-top {
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.4);
    font-size: 14px;
}

.ring-orbit .orbit-arrow-bottom {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.4);
    font-size: 14px;
}

/* 环形文字容器 */
.orbit-text-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 700px;
    height: 350px;
}

/* 环形文字 */
.orbit-text {
    position: absolute;
    font-size: 18px;
    font-weight: bold;
    color: rgba(255, 255, 255, 0.95);
}

.left-text {
    top: 45%;
    left: -20px;
    transform: translateY(-50%) rotate(-45deg);
}

.right-text {
    top: 45%;
    right: -20px;
    transform: translateY(-50%) rotate(45deg);
}

.curve-text {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 3px;
}

/* 圆形标签 */
.tag {
    position: absolute;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 153, 255, 0.95) 0%, rgba(0, 102, 204, 0.95) 100%);
}

.tag span {
    font-size: 17px;
    font-weight: bold;
    color: #fff;
}

.left-flange {
    top: 20%;
    left: 2%;
}

.left-rect {
    bottom: 25%;
    left: 15%;
}

.right-flange {
    top: 20%;
    right: 2%;
}

.right-rect {
    bottom: 25%;
    right: 15%;
}

/* 标签箭头 - 指向环形轨道 */
.tag::before {
    content: "";
    position: absolute;
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

.left-flange::before {
    right: -12px;
    border-left: 12px solid rgba(0, 153, 255, 0.95);
}

.left-rect::before {
    right: -12px;
    border-left: 12px solid rgba(0, 153, 255, 0.95);
}

.right-flange::before {
    left: -12px;
    border-right: 12px solid rgba(0, 153, 255, 0.95);
}

.right-rect::before {
    left: -12px;
    border-right: 12px solid rgba(0, 153, 255, 0.95);
}

/* 标签外侧小箭头 */
.tag::after {
    content: "";
    position: absolute;
    width: 0;
    height: 0;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
}

.left-flange::after {
    left: -10px;
    border-right: 10px solid rgba(255, 255, 255, 0.6);
}

.left-rect::after {
    left: -10px;
    border-right: 10px solid rgba(255, 255, 255, 0.6);
}

.right-flange::after {
    right: -10px;
    border-left: 10px solid rgba(255, 255, 255, 0.6);
}

.right-rect::after {
    right: -10px;
    border-left: 10px solid rgba(255, 255, 255, 0.6);
}

/* 型号列表 */
.model-list {
    position: absolute;
    text-align: left;
}

.model-title {
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 12px;
}

.model-row {
    font-size: 21px;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 5px;
    letter-spacing: 12px;
}

.left-models {
    bottom: 25px;
    left: 3%;
}

.right-models {
    bottom: 25px;
    right: 3%;
}

/* 响应式布局 */
@media (max-width: 992px) {
    .diagram-bg {
        min-height: 400px;
    }
    
    .ring-orbit {
        width: 350px;
        height: 175px;
    }
    
    .center-slider {
        width: 150px;
        height: 60px;
    }
    
    .slider-text {
        font-size: 36px;
    }
    
    .main-title {
        font-size: 36px;
    }
    
    .sub-title {
        font-size: 18px;
    }
    
    .tag {
        width: 60px;
        height: 60px;
    }
    
    .tag span {
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .diagram-bg {
        min-height: 350px;
    }
    
    .left-models,
    .right-models {
        position: static;
        padding: 20px;
    }
    
    .left-models {
        float: left;
    }
    
    .right-models {
        float: right;
    }
    
    .model-row {
        letter-spacing: 4px;
        font-size: 18px;
    }
    
    .left-text,
    .right-text {
        display: none;
    }
}


/* 研磨/轧制滚珠丝杠副模块 */
.product-showcase {
  width: 1920px;
  height: 800px;
  background-image: url('bg.jpg');
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.showcase-container {
  width: 800px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  padding: 50px 0;
}

.showcase-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 300px;
  gap: 100px;
}

.showcase-content {
  width: 50%;
  padding: 0 30px;
}

.showcase-tag {
  font-size: 14px;
  color: #666666;
  font-family: "微软雅黑", sans-serif;
  margin-bottom: 15px;
}

.showcase-title {
  font-size: 28px;
  font-weight: bold;
  font-family: "黑体", sans-serif;
  margin-bottom: 8px;
  line-height: 1.2;
}

.showcase-title .blue-text {
  color: #0056B3;
}

.showcase-title .black-text {
  color: #000000;
}

.showcase-english {
  font-size: 6px;
  color: #C6C6C6;
  font-family: "微软雅黑", sans-serif;
  margin-bottom: 10px;
}

.showcase-desc {
  display: flex;
  align-items: center;
  margin-bottom: 25px;
}

.showcase-desc .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #0056B3;
  margin-right: 10px;
}

.showcase-desc .line {
  width: 2px;
  height: 20px;
  background-color: #0056B3;
  margin-right: 15px;
}

.showcase-desc .text {
  font-size: 14px;
  color: #333333;
  font-family: "微软雅黑", sans-serif;
}

.showcase-button {
  background-color: #0056B3;
  color: #FFFFFF;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  font-family: "微软雅黑", sans-serif;
  text-decoration: none;
  display: inline-block;
}

.showcase-image {
  width: 50%;
  padding: 0;
}

.image-background {
  width: 400px;
  height: 400px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin: 0 auto;
}

.image-background img {
  max-width: 80%;
  max-height: 80%;
  object-fit: contain;
}

.grind-screw {
  margin-bottom: 50px;
  flex-direction: row;
}

.rolled-screw {
  flex-direction: row;
}

/* 滚珠丝杠来图定制标题模块 */
.customization-header {
  width: 1920px;
  background-color: #FFFFFF;
  position: relative;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.customization-header-container {
  width: 1200px;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 0;
}

.customization-main-title {
  font-family: "黑体", sans-serif;
  font-size:56px;
  font-weight: bold;
  color: #0056B3;
  margin-bottom: 10px;
  text-align: center;
  letter-spacing: 0px;
}

.customization-subtitle {
  font-family: "微软雅黑", sans-serif;
  font-size:18px;
  color: #666666;
  border: 1px solid #CCCCCC;
  padding: 5px 30px;
  border-radius: 30px;
  text-align: center;
}

.customization-text {
  font-family: "微软雅黑", sans-serif;
  font-size: 16px;
  color: #666666;
  line-height: 1.5;
  width: 100%;
  text-align: center;
}

.customization-text p {
  margin-bottom: 5px;
}

/* 服务支持模块 */
.service-support {
  width: 100%;
  min-width: 1200px;
  height: 160px;
  background-color: #0056B3;
  position: relative;
  margin: 0 auto;
  overflow: hidden;
  margin-top: 20px;
}

/* 服务支持模块 */
.service-support {
  width: 1920px;
  height: 300px;
  background-color: #0056B3;
  position: relative;
  margin: 0 auto;
  overflow: hidden;
}

/* 背景纹理 */
.service-support::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%, transparent 50%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.1) 75%, transparent 75%, transparent);
  background-size: 100px 100px;
  z-index: 0;
}

.service-container {
  width: 1200px;
  height: 250px;
  display: flex;
  position: relative;
  z-index: 1;
  margin: 0 auto;
  top: 25px;
}

.service-left {
  width: 240px;
  height: 250px;
  background-color: #FFB900;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.service-left-title {
  font-family: "微软雅黑", Arial, sans-serif;
  font-size: 16px;
  line-height: 20px;
  font-weight: 300;
  color: #FFFFFF;
  margin-bottom: 20px;
  text-align: center;
}

.service-left-text {
  font-family: "黑体", Arial, sans-serif;
  font-size: 36px;
  line-height: 44px;
  font-weight: bold;
  color: #FFFFFF;
  margin-bottom: 20px;
  text-align: center;
}

.service-left-arrow {
  font-size: 24px;
  color: #FFFFFF;
  text-align: center;
}

.service-right {
  width: 960px;
  height: 250px;
  background-color: #FFFFFF;
  display: flex;
  align-items: center;
  position: relative;
}

.service-module {
  width: 192px;
  height: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.service-icon {
  width: 80px;
  height: 80px;
  border: 1px solid #CCCCCC;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-content {
  font-size: 32px;
  color: #000000;
}

.service-text {
  font-family: "微软雅黑", Arial, sans-serif;
  font-size: 18px;
  line-height: 24px;
  font-weight: bold;
  color: #000000;
  margin-bottom: 10px;
  text-align: center;
}

.service-underline {
  width: 30px;
  height: 3px;
  background-color: #FFB900;
  margin-top: 5px;
  margin-left: auto;
  margin-right: auto;
}

.service-divider {
  width: 1px;
  height: 200px;
  background-color: #E5E5E5;
  align-self: center;
}

/* 滚珠丝杠9大类模块 */
.customization {
  width: 1920px;
  background-color: #FFFFFF;
  position: relative;
  margin: 0 auto;
  overflow: hidden;
  padding: 10px 0;
}

.yellow-bar {
  width: 40px;
  height: 100%;
  background-color: #FFB900;
  position: absolute;
  top: 0;
}

.yellow-bar.right {
  right: 0;
}

.custom-container {
  width: 1200px;
  height: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 0;
}

.types-header {
  text-align: center;
  margin-bottom: 10px;
}

.types-title {
  font-family: "黑体", sans-serif;
  font-size: 36px;
  margin-bottom: 10px;
  text-align: center;
  display: inline-block;
  position: relative;
  color: #0056B3;
}

.title-blue {
  border-bottom: 1px solid #0056B3;
  padding-bottom: 5px;
}
.title-blue1 {
  border-bottom: 1px solid #0056B3;
  padding-bottom: 5px;
  color: #000000;
}

.title-number {
  color: #0056B3;
  font-size:120px;
  font-weight: bold;
  margin: 0 10px;
  font-family: "黑体", sans-serif;
}

.types-line {
  width: 20px;
  height: 2px;
  background-color: #000000;
  margin: 10px auto 20px;
}

.types-subtitle {
  font-family: "微软雅黑", sans-serif;
  font-size: 14px;
  color: #000000;
  margin-bottom: 30px;
  text-align: center;
}

.types-grid {
  display: grid;
  grid-template-columns: repeat(3, 360px);
  gap: 20px;
  width: 100%;
}

.types-card {
  width: 360px;
  height: 330px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  box-sizing: border-box;
  background-color: #FFFFFF;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
  border-radius: 4px;
}

.types-card img {
  width: 280px;
  height: 150px;
  object-fit: cover;
  margin-bottom: 15px;
  background-color: #FFFFFF;
}

.types-card-title {
  font-family: "黑体", sans-serif;
  font-size: 16px;
  font-weight: bold;
  color: #000000;
  margin-bottom: 2px;
  text-align: center;
}

.types-card-desc {
  font-family: "微软雅黑", sans-serif;
  font-size: 12px;
  color: #666666;
  margin-bottom: 15px;
  text-align: center;
}

.types-button {
  background-color: #0056B3;
  color: #FFFFFF;
  font-size: 14px;
  padding: 8px 20px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  font-family: "微软雅黑", sans-serif;
  text-decoration: none;
  display: inline-block;
}

/* 质量导向模块 */
.quality-guide {
  width: 1920px;
  height: 380px;
  background-color: #0056B3;
  position: relative;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* 背景纹理 */
.quality-guide::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%, transparent 50%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.1) 75%, transparent 75%, transparent);
  background-size: 100px 100px;
  z-index: 0;
}

.quality-container {
  width: 1200px;
  height: 350px;
  border: 2px solid #FFFFFF;
  background-color: #FFFFFF;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.quality-content {
  text-align: center;
  width: 100%;
  padding: 20px;
}

.quality-title {
  font-family: "黑体", sans-serif;
  font-size: 36px;
  font-weight: bold;
  color: #000000;
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
}

.diamond {
  display: none;
}

.quality-subtitle {
  font-family: "微软雅黑", sans-serif;
  font-size: 16px;
  color: #0056B3;
  margin-bottom: 20px;
}

.quality-english {
  font-family: "微软雅黑", sans-serif;
  font-size: 12px;
  color: #666666;
  margin-bottom: 30px;
}

.quality-tags {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #0056B3;
  height: 130px;
  position: relative;
  padding: 0;
  width: 100%;
}

.quality-tag {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  height: 100%;
  text-align: center;
}

.tag-chinese {
  font-family: "黑体", sans-serif;
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 5px;
}

.tag-english {
  font-family: "微软雅黑", sans-serif;
  font-size: 12px;
}

.quality-divider {
  display: none;
}

/* 企业实力模块 */
.company-strength {
  padding: 20px 0;
  max-width: 1200px;
  margin: 0 auto;
  background-color: #F8F9FB;
}

.strength-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.strength-content {
  flex: 1;
  padding: 0 20px;
}

.strength-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: #165DFF;
  color: #FFFFFF;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin-bottom: 20px;
}

.number {
  font-size: 14px;
  font-weight: bold;
}

.label {
  font-size: 14px;
  font-weight: bold;
  margin-top: 5px;
}

.strength-title {
  font-size: 18px;
  font-weight: bold;
  color: #333333;
  margin-bottom: 10px;
}

.strength-text {
  font-size: 12px;
  color: #666666;
  line-height: 20px;
}

.strength-image {
  flex: 1;
  padding: 0 20px;
}

.item-1 .strength-image img {
  width: 400px;
  height: 279px;
}

.item-2 .strength-image img {
  width: 400px;
  height: 279px;
}

.item-3 .strength-image img {
  width: 400px;
  height: 279px;
}

/* 走进博特精工模块 */
.about-bote {
  width: 1920px;
  background-color: #F5F5F5;
  position: relative;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-container {
  width: 1200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-around;
  padding: 20px 0;
}

.about-title {
  font-family: "黑体", sans-serif;
  font-size: 36px;
  font-weight: bold;
  color: #0056B3;
  margin-bottom: 10px;
  text-align: center;
}

.about-title-lines {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.blue-line {
  width: 60px;
  height: 3px;
  background-color: #0056B3;
  margin-right: 10px;
}

.black-line {
  width: 200px;
  height: 1px;
  background-color: #000000;
}

.about-decoration {
  margin-bottom: 30px;
}

.yellow-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: #FFB900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.double-arrow {
  color: #FFFFFF;
  font-size: 20px;
}

.about-content {
  display: flex;
  justify-content: space-between;
  width: 100%;
}

.about-left {
  width: 600px;
  text-align: left;
  padding: 0 20px;
}

.about-main-title {
  margin-bottom: 30px;
  display: flex;
  flex-direction: column;
}

.about-main-title .orange-text {
  font-family: "黑体", sans-serif;
  font-size: 36px;
  font-weight: bold;
  color: #FFB900;
  margin-bottom: 5px;
}

.about-main-title .black-text {
  font-family: "黑体", sans-serif;
  font-size: 24px;
  font-weight: bold;
  color: #000000;
  margin-bottom: 5px;
}

.about-main-title .gray-text {
  font-family: "微软雅黑", sans-serif;
  font-size: 14px;
  color: #666666;
}

.about-text {
  font-family: "微软雅黑", sans-serif;
  font-size: 14px;
  color: #333333;
  line-height: 24px;
  margin-bottom: 30px;
}

.about-text p {
  margin-bottom: 15px;
}

.about-button {
  margin-top: 20px;
  text-align: left;
}

.about-button a {
  background-color: #FFB900;
  color: #FFFFFF;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 4px;
  text-decoration: none;
  font-family: "微软雅黑", sans-serif;
}

.about-right {
  width: 513px;
  padding: 0 20px;
  text-align: right;
}

.about-right img {
  width: 513px;
  height: 452px;
  object-fit: cover;
  position: relative;
}

/* 水印效果 */
.about-right img::after {
  content: "博特精工";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: rgba(0, 0, 0, 0.1);
  pointer-events: none;
}