/* --- 全局重置 --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family:
    "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: #333;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden; /* 防止横向滚动条 */
}

ul {
  list-style: none;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
} /* 全局图片自适应 */

/* 通用容器 */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px; /* 移动端留白 */
  position: relative;
}
@media (min-width: 769px) {
  .container {
    padding: 0 15px;
  }
}

/* --- 主视觉区域 (Hero) --- */
.hero-section {
  margin-top: 15px;
  position: relative;
  width: 100%;
  min-height: 100vh;
  padding-top: 80px; /* 避开Header */
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/wei-tu-2x-36.png");
  background-size: 100% 100%;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-content {
  display: flex;
  flex-wrap: wrap; /* 允许换行 */
  justify-content: center;
  text-align: center; /* 默认居中，大屏再左对齐 */
}

.text-wrapper {
  width: 100%;
  max-width: 800px;
  padding: 40px 0;
  z-index: 2;
  padding-top: 80px;
}

.text-wrapper h1 {
  font-size: 32px; /* 移动端字体 */
  color: rgba(51, 51, 51, 1);
  /* margin-bottom: 20px; */
  line-height: 1.3;
}

.text-wrapper p {
  font-size: 16px;
  color: rgba(101, 113, 130, 1);
  line-height: 1.6;
  margin-top: 40px;
}


@media (min-width: 769px) {
  .hero-section {
    min-height: 720px;
    /* height: 80vh; */
  }
  .hero-content {
    justify-content: flex-start;
    text-align: left;
  }
  .text-wrapper {
    max-width: 800px;
  }
  .text-wrapper h1 {
    font-size: 58px;
  }
  .text-wrapper p {
    font-size: 18px;
  }
}

/* --- 第二部分：功能亮点 --- */
.features-section {
  padding: 60px 0;
  background-color: #fff;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
  padding: 0 10px;
  width: 83%;
  margin: 0 auto;
  /* margin-top: -40px; */
}

.section-header h2 {
  font-size: 24px;
  font-weight: bold;
  color: rgba(51, 51, 51, 1);
  margin-bottom: 10px;
  line-height: 1.4;
}


.location{
  position: absolute;
  top: -1%;
  left: 9%;
}
.location h2{
  font-size: 30px !important;
}
.location .pcl{
  font-size: 12px !important;
  line-height: 20px !important;
}

@media (min-width: 769px) {
  .section-header h2 {
    font-size: 32px;
  }
}

.section-header .highlight {
  color: rgba(255, 48, 14, 1);
}
.section-header .sub-title {
  font-size: 18px;
  color: rgba(81, 88, 97, 1);
  margin-bottom: 10px;
  line-height: 30px;
}

/* Tabs */
.tabs-wrapper {
  margin-bottom: 40px;
  text-align: center;
  margin-top: 40px;
}

.tabs-header {
  display: inline-flex;
  gap: 30px;
  position: relative;
  z-index: 2;
  /* 移动端允许横向滚动 */
  max-width: 100%;
  overflow-x: auto;
  padding-bottom: 5px;
}

.tab-item {
  font-size: 16px;
  padding-bottom: 10px;
  cursor: pointer;
  font-weight: 500;
  color: #666;
  white-space: nowrap;
  position: relative;
  width: 500px;
}

.tab-item.active {
  color: #ff4d4f;
  font-weight: bold;
}
.tab-item.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: #ff4d4f;
}
.tabs-line {
  width: 83%;
  margin: 0 auto;
  height: 3px;
  background: #e8e8e8;
  margin-top: -7px;
}

/* 内容布局 */
.intro-block {
  display: flex;
  flex-direction: column; /* 移动端默认纵向 */
  align-items: center;
  margin-bottom: 40px;
  text-align: center;
  width: 83%;
  margin: 0 auto;
}

.intro-text {
  width: 100%;
  margin-bottom: 40px;
}
.intro-text h3 {
  font-size: 24px;
  margin-bottom: 15px;
  color: #333;
}
.intro-text .desc {
  font-size: 14px;
  color: #666;
  line-height: 1.8;
  margin-bottom: 20px;
  text-align: left;
}

.intro-media {
  width: 100%;
  display: flex;
  justify-content: center;
}

/* 1. 基础容器：确保图片不被裁切且标签能超出容器 */
.phone-mockup {
  position: relative;
  width: 280px; /* 根据实际图片比例调整 */
  margin: 0 auto;
  /* overflow: visible; 默认就是visible，确保不要写成hidden */
}

.mockup-screen img {
  width: 100%;
  height: auto;
  border-radius: 20px; /* 如果图片自带圆角则不加 */
  /* box-shadow: 0 20px 50px rgba(0,0,0,0.1); 可选：给手机图加个淡淡的阴影 */
}

/* 2. 悬浮标签通用样式 */
.float-tag {
  position: absolute;
  background: #fff;
  padding: 10px 15px;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08); /* 柔和的阴影 */
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  z-index: 10;
  transition: transform 0.3s ease;
  margin-top: 50px;
}

/* 标签内的图标小方块 */
.tag-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tag-icon img {
  /* width: 20px; */
  /* height: 20px; */
}

/* UI图中的几种图标背景色 */
.red-bg {
  /* background-color: #fff2f0; */
}
.orange-bg {
  background-color: #fff7f2;
}
.orange-light-bg {
  background-color: #fff9f5;
}

/* 3. 精确位置控制 (根据UI图肉眼微调) */

/* “最近站点推荐” - 位于左侧中间 */
.tag-location {
  left: -60px;
  top: 25%;
  animation: floatAnim 3s ease-in-out infinite;
}

/* “企业钱包支付” - 位于右上角 */
.tag-wallet {
  right: -80px;
  top: 10%;
  animation: floatAnim 3s ease-in-out infinite 0.5s; /* 错开动画时间 */
}

/* “双枪同充” - 位于右侧下方 */
.tag-charge {
  right: -50px;
  bottom: 20%;
  animation: floatAnim 3s ease-in-out infinite 1s;
}

/* 4. 浮动动画 (上下轻微晃动) */
@keyframes floatAnim {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* 5. 响应式处理：在小屏幕上缩小位移，防止超出屏幕 */
@media (max-width: 768px) {
  .tag-location {
    left: -20px;
    scale: 0.9;
  }
  .tag-wallet {
    right: -30px;
    scale: 0.9;
  }
  .tag-charge {
    right: -20px;
    scale: 0.9;
  }
}
@media (min-width: 769px) {
  .tabs-header {
    gap: 100px;
  }
  .tab-item {
    font-size: 18px;
  }
  .intro-block {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
  .intro-text {
    width: 45%;
    margin-bottom: 0;
  }
  .intro-media {
    width: 50%;
  }
  .phone-mockup {
    width: 388px;
    height: 400px;
  }
}

/* 浮动标签扩展配置 */
.float-tag {
  position: absolute;
  background: #fff;
  padding: 6px 12px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  font-size: 12px;
  font-weight: bold;
  display: flex;
  align-items: center;
  z-index: 5;
  animation: floatAnim 3s ease-in-out infinite;
}
.float-tag .icon {
  color: #ff4d4f;
  margin-right: 4px;
}
.tag-top-right {
  top: 100px;
  right: -10px;
}
.tag-center-left {
  top: 200px;
  left: -20px;
}
.tag-bottom-right {
  bottom: 40px;
  right: -5px;
}

/* Grid */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  width: 83%;
  margin: 0 auto;
}
@media (min-width: 769px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

.feature-card {
  background:  #ffffff;
  box-shadow: 0px 2px 20px 0px rgba(231, 231, 231, 0.38);
  border-radius: 16px;
  padding: 10px;
  display: flex;
  align-items: center;
  margin-top: 20px;
  z-index: 1;
}
.circle-icon {
  width: 120px;
  height: 120px;
  color: #ff4d4f;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-right: 15px;
  flex-shrink: 0;
}
.card-info h4 {
  font-size: 16px;
  color: #515861;
  margin-bottom: 10px;
}
.card-info p {
  font-size: 12px;
  color: #A8ACB0;
  line-height: 1.5;
}

.btn-primary {
  display: inline-block;
  background-color: #ff4d4f;
  color: #fff;
  padding: 12px 32px;
  border-radius: 8px;
  font-size: 14px;
  transition: background 0.3s;
  margin-bottom: 25px;
}
.btn-primary:hover {
  background-color: rgba(255, 48, 14, 1);
}
/* --- 二维码渐显交互样式 --- */
.qrcode-wrapper {
  position: relative;
  display: inline-flex; /* 改为 flex 方便内部元素对齐 */
  align-items: center;  /* 确保垂直居中 */
}

/* === 桌面端：二维码在右侧显示 === */
.qrcode-box {
  /* 初始状态：透明、不可见、微微向左偏移（配合平滑动画） */
  opacity: 0;
  visibility: hidden;
  transform: translate(-15px, 0); 
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* 平滑过渡动画 */
  
  /* 绝对定位：悬浮在按钮右侧 */
  position: absolute;
  top: 130%; /* 垂直居中起点 */
  left: 100%; /* 贴在按钮右边缘 */
  background: #ffffff;
  padding: 12px;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  z-index: 100;
  text-align: center;
  
  /* 间距与定位微调 */
  margin-left: 15px; /* 与按钮右侧保持 15px 间距 */
  margin-top: -85px; /* 强行向上偏移一半的盒子高度，实现绝对居中 (盒子约170px高) */
}

/* 激活状态：透明度恢复、可见、归位 */
.qrcode-box.show {
  width: 150px;
  opacity: 1;
  visibility: visible;
  transform: translate(0, 0); /* 动画归位 */
}

.qrcode-box img {
  width: 120px;
  height: 120px;
  display: block;
  margin: 0 auto;
}

.qrcode-box span {
  display: block;
  font-size: 12px;
  color: #A8ACB0;
  margin-top: 8px;
  white-space: nowrap;
}

/* === 移动端特殊处理：屏幕太窄，二维码自动改为在下方弹出，防止撑破屏幕 === */
@media (max-width: 768px) {
  .qrcode-wrapper {
    display: flex;
    flex-direction: column; /* 强制上下排列 */
    align-items: center;
    width: 100%;
  }
  .qrcode-box {
    position: relative;
    top: auto;
    left: auto;
    transform: translate(0, -10px); /* 移动端初始向上偏移 */
    margin-left: 0;
    margin-top: 0; 
  }
  .qrcode-box.show {
    transform: translate(0, 0);
  }
}

/* 移动端特殊处理：避免悬浮二维码超出屏幕边界 */
@media (max-width: 768px) {
  .qrcode-wrapper {
    display: flex;
    justify-content: center;
  }
  .qrcode-box {
    transform: translate(0, -15px);
    left: auto;
    /* 在移动端改为相对定位，直接挤开下方空间展现，体验更好 */
    position: relative;
    top: auto;
    margin-top: 0;
  }
  .qrcode-box.show {
    transform: translate(0, 0);
    margin-top: 10px;
  }
}
/* Tabs 逻辑 */
.tab-content-panel {
  display: none;
  animation: fadeIn 0.5s ease;
}
.tab-content-panel.active {
  display: block;
}
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- 第三部分：运营平台 --- */
.operation-section {
  padding: 60px 0;
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/wei-tu-2x-4.png");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  position: relative;
}

.bg-decoration-top {
  position: absolute;
  top: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(
    circle,
    rgba(255, 77, 79, 0.06) 0%,
    rgba(255, 255, 255, 0) 70%
  );
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
}

.operation-card {
  width: 83%;
  margin: 0 auto;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column; /* 默认纵向 */
  overflow: hidden;
  position: relative;
  z-index: 1;
  margin-top: 55px;
}

.op-left {
  width: 100%;
  padding: 30px 20px;
}
.op-right {
  width: 100%;
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/bian-zu-66-2x.png");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  padding: 30px 20px 0 30px;
  display: flex;
  flex-direction: column;
}

html[lang="en"] .op-right {
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/bian-zu-66-2x-1.png");
}


.op-right-content h3 {
  font-size: 30px;
  color: #333333;
  line-height: 42px;
  text-align: left;
}

.op-right-content p {
  width: 400px;
  font-size: 12px;
  color: #515861;
  line-height: 18px;
  text-align: justify;
  margin-top: 20px;
}

@media (min-width: 900px) {
  .operation-card {
    flex-direction: row;
  }
  .op-left {
    width: 50%;
    padding: 60px;
  }
  .op-right {
    width: 50%;
  }
}

.op-item {
  display: flex;
  margin-bottom: 35px;
  justify-content: center;
  align-items: center;
}
.circle-icon-small {
  width: 50px;
  height: 44px;
  color: #ff4d4f;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-right: 15px;
  flex-shrink: 0;
}
.circle-icon-small img {
  width: 100%;
  height: 100%;
}
.op-text h4 {
  font-size: 15px;
  font-weight: bold;
  margin-bottom: 6px;
  /* color: #767c83; */
  color: #515861;
}
.op-text p {
  font-size: 12px;
  color: rgba(81, 88, 97, .5);
  
  line-height: 1.5;
  text-align: justify;
}

.dashboard-mockup-area {
  position: relative;
  width: 100%;
  height: 300px;
}
.main-screen {
  width: 100%;
  height: 100%;
  background: #fff;
  border: 1px solid #eee;
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
  overflow: hidden;
  z-index: 1;
}

.float-card {
  position: absolute;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  z-index: 10;
  animation: floatSlow 4s ease-in-out infinite;
}
@keyframes floatSlow {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

.card-data {
  top: 10px;
  left: 0px;
  width: 160px;
  transform: scale(0.9);
}
.card-chart {
  bottom: 20px;
  right: 0px;
  width: 180px;
  transform: scale(0.9);
}
@media (min-width: 769px) {
  .card-data {
    left: -30px;
    transform: scale(1);
    width: 200px;
  }
  .card-chart {
    right: -20px;
    transform: scale(1);
    width: 220px;
  }
}

/* --- 第四部分：车队管理 --- */
/* .fleet-section {
  padding: 60px 0;
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/bian-zu-72-2x.png");
  background-repeat: no-repeat;
  background-size: 67% 80%;
  background-position: center;
  background-position-y: 46px;
} */

.fleet-section {
  padding: 60px 0;
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/bian-zu-72-2x-1.png");
  background-repeat: no-repeat;
  
  /* 将高度设置为 auto，保证图片维持原有长宽比，不随内容变长而拉伸 */
  background-size: 67% auto; 
  
  background-position: center;
  background-position-y: 46px;
}
html[lang="en"] .fleet-section {
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/bian-zu-72-2x-2.png");
  background-size: 70% 86%;
}

.highlight-text {
  color: rgba(255, 48, 14, 1);
  font-weight: bold;
}

.fleet-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-top: 40px;
  width: 83%;
  margin: 0 auto;
}
.fleet-col-center {
  order: -1;
}

@media (min-width: 1024px) {
  .fleet-grid {
    grid-template-columns: 1fr 420px 1fr;
    gap: 60px;
    align-items: center;
  }
  .fleet-col-center {
    order: 0;
  }
}

.fleet-card {
  padding: 20px;
  background: linear-gradient(
    180deg,
    #ffffff 0%,
    rgba(247, 249, 251, 0.1) 100%
  );
  box-shadow: 0px 2px 20px 0px rgba(36, 28, 28, 0.05);
  border-radius: 8px;
  border: 1px solid #ffffff;
  margin-bottom: 20px;
}
.fleet-card h4 {
  color: #515861;
  margin-bottom: 10px;
}
.check-list li {
  font-size: 13px;
  color: #c9cbcd;
  margin-bottom: 8px;
  padding-left: 20px;
  position: relative;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 6px;
  height: 10px;
  border-bottom: 2px solid #52c41a;
  border-right: 2px solid #52c41a;
  transform: rotate(45deg);
}

.center-visual-area {
  width: 100%;
  height: 450px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.phone-placeholder {
  width: 220px;
  height: 440px;
  background: #f5f7fa;
  border-radius: 24px;
  border: 6px solid #fff;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
  z-index: 1;
  overflow: hidden;
}

@media (min-width: 1024px) {
  .phone-placeholder {
    width: 260px;
    height: 520px;
  }
  .center-visual-area {
    height: 600px;
  }
}

.section-footer {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- 第五部分：优势 --- */
.advantages-section {
  padding: 60px 0;
  background-color: rgba(247, 251, 255, 1);
}
.advantages-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  width: 83%;
  margin: 0 auto;
  margin-top: 40px;
}
@media (min-width: 600px) {
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .advantages-grid {
    grid-template-columns: repeat(3, 1fr);
    column-gap: 40px;
    row-gap: 80px;
  }
}
.ad-item {
  display: flex;
  align-items: center;
}
.ad-icon-box {
  width: 106px;
  height: 106px;
  margin-right: 15px;
  flex-shrink: 0;
}
.ad-content h4 {
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 8px;
  color: #515861;
}
.ad-content p {
  font-size: 12px;
  color: #A8ACB0;
  line-height: 1.6;
  text-align: justify;
}

/* --- 第六部分：解决方案 (深色) --- */
.solutions-section {
  position: relative;
  padding: 60px 0;
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/bian-zu-73-2x.png");
  background-repeat: no-repeat;
  background-size: cover;
  color: #fff;
  background-position: center;
}
.dark-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.relative-z {
  position: relative;
  z-index: 1;
}

.solution-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 83%;
  margin: 0 auto;
}
@media (min-width: 900px) {
  .solution-container {
    flex-direction: row;
    align-items: stretch;
  }
}

.sol-sidebar {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  display: flex;
  overflow-x: auto;
  gap: 10px;
  -webkit-overflow-scrolling: touch;
  background-color: rgba(33, 39, 51, 0.80);
  padding: 15px;
}
@media (min-width: 900px) {
  .sol-sidebar {
    width: 280px; /* 从原有的 240px 适当加宽，给英文留出更多空间 */
    flex-shrink: 0; /* 防止左侧菜单被右侧内容区域挤压 */
    flex-direction: column;
    overflow-x: visible;
  }
}

.sol-nav-item {
  padding: 10px 15px;
  color: #999;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  white-space: nowrap;
  flex-shrink: 0;
  white-space: normal; /* 核心：取消移动端 nowrap 限制，允许换行 */
    word-break: break-word; /* 保证超长英文单词能够正常截断换行 */
    line-height: 1.4; /* 增加行高，避免多行文本显得拥挤 */
  
}
.sol-nav-item img{
  width: 22px;
  height: 22px;
  margin-right: 10px;
  flex-shrink: 0; /* 核心：禁止图标缩小 */
}
.sol-nav-item.active {
  background: linear-gradient(90deg, #ff5e3a, #ff4d4f);
  color: #fff;
  font-weight: bold;
  border-radius: 4px;
  margin: 0;
}

.sol-nav-item .img-active { display: none; }
.sol-nav-item .img-default { display: block; }
.sol-nav-item.active .img-active { display: block; }
.sol-nav-item.active .img-default { display: none; }

@media (min-width: 900px) {
  .sol-nav-item {
    padding: 18px 30px;
    margin: 0 10px;
  }
}

.sol-right-wrapper {
  min-height: 300px;
}
.sol-content-panel {
  display: none;
  background: rgba(40, 40, 40, 0.6);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
}
.sol-content-panel.active {
  display: block;
  animation: fadeInSol 0.4s ease-out;
  height: 100%;
  background-color: rgba(33, 39, 51, 0.80);
}
@keyframes fadeInSol {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.sol-text-area h3 {
  font-size: 20px;
  color: #fff;
  margin-bottom: 10px;
  
}
.sol-text-area p {
  font-size: 13px;
  color: #83878C;
  line-height: 1.6;
}

.sol-images-grid {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 60px;
}
.sol-img-box {
  width: 100%;
  height: 180px;
  border-radius: 8px;
  overflow: hidden;
}
@media (min-width: 769px) {
  .sol-content-panel {
    padding: 40px;
  }
  .sol-images-grid {
    flex-direction: row;
  }
  .sol-img-box {
    width: 297px;
    height: 173px;
  }
}
.img-placeholder-dark {
  width: 100%;
  height: 100%;
  background: #333;
  color: #666;
  display: flex;
  align-items: center;
  justify-content: center;
  /* border: 2px dashed #444; */
}

/* --- 第七部分 & 第八部分 --- */
.seventh-section,
.eighth-section {
  padding: 60px 0;
  /* padding-bottom: 60px; */
  background-color: rgba(243, 244, 248, 0.58);
}

.seventh-icons-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  width: 83%;
  margin: 0 auto;
}
@media (min-width: 600px) {
  .seventh-icons-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 900px) {
  .seventh-icons-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 30px;
  }
}

.seventh-icon-card {
  padding: 20px;
  border-radius: 12px;
  text-align: center;
}
.icon-wrapper {
  width: 134px;
  height: 125px;
  margin: 0 auto 15px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.seventh-icon-card h4 {
  font-size: 14px;
  color: rgba(114, 123, 134, 1);
  font-weight: bold;
}

.eighth-section {
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/qian-dan-hong-bai-se-chou-xiang-bei-jing-ma-ka-long-zhi-gan-rou-jian-bian-chao-shun-hua-xian-xi-liu-dong-qu-xian-ji-jian-qing-ying-feng-ge-ji-rou-he-guang-.-2x.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: #fff;
}
.statistics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  width: 83%;
  margin: 0 auto;
  margin-top: 30px;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}
@media (min-width: 769px) {
  .statistics-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
  }
}
.stat-item h3 {
  font-size: 28px;
  color: #ffffff;
  margin-bottom: 5px;
}
.stat-item p {
  font-size: 12px;
  color: #ffffff;
}

.center-btn-wrapper {
  text-align: center;
  margin-top: 30px;
}
.btn-shadow {
  /* box-shadow: 0 10px 20px rgba(255, 77, 79, 0.4); */
}

/* =========================================
   移动端完美适配方案 (768px 及以下)
   由生产级别优化重构，解决旧版图层及缩放漏洞
========================================= */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  /* 1. 主视觉区域 (Hero) - 背景图防裁切优化 */
  .hero-section {
    margin-top: 0;
    min-height: auto;
    padding-top: 70px;
    padding-bottom: 250px; /* 为背景底部的 3D 图形留出空间 */
    background-size: cover;
    background-position: center 80%; /* 将视觉重心下移，确保核心图形露出 */
  }

  .hero-content {
    min-height: auto;
  }

  .text-wrapper {
    max-width: 100%;
    padding: 40px 10px 0;
    text-align: center;
  }

  .text-wrapper h1 {
    font-size: 28px;
    line-height: 1.3;
  }

  .text-wrapper p {
    margin-top: 18px;
    font-size: 15px;
    line-height: 1.75;
  }

  .features-section,
  .operation-section,
  .fleet-section,
  .advantages-section,
  .solutions-section,
  .seventh-section,
  .eighth-section {
    padding: 44px 0;
  }

  .section-header {
    width: 100%;
    padding: 0;
    margin-bottom: 24px;
  }

  .section-header h2 {
    font-size: 22px;
    line-height: 1.35;
    margin-bottom: 12px;
    color: #333333;
  }

  .section-header .sub-title {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 0;
    color: #333333;
    font-style: normal;
  }

  /* 2. 标签横向滚动优化 - 彻底隐藏滚动条 */
  .tabs-wrapper {
    margin-bottom: 28px;
  }

  .tabs-header, .sol-sidebar {
    display: flex;
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch; /* iOS 弹性滚动 */
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE 10+ */
    gap: 12px;
    padding: 6px;
  }
  .tabs-header::-webkit-scrollbar, .sol-sidebar::-webkit-scrollbar {
    display: none; /* Chrome/Safari/Webkit */
  }

  .tab-item {
    flex: 1 0 auto;
    width: auto;
    min-width: 140px;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 14px;
    text-align: center;
    background: #f6f7f9;
  }

  .tab-item.active {
    background: #fff;
    box-shadow: 0 4px 12px rgba(255, 77, 79, 0.08);
    color: #ff4d4f;
  }

  .tab-item.active::after {
    bottom: 2px;
    left: 20%;
    width: 60%;
    height: 2px;
  }

  .tabs-line { display: none; } /* 移动端无需底部长线条 */

  .intro-block {
    width: 100%;
    margin-bottom: 8px;
  }

  .intro-text {
    width: 100%;
    margin-bottom: 24px;
  }

  .intro-text h3 {
    font-size: 21px;
    line-height: 1.35;
  }

  .intro-text .desc {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 18px;
  }

  .intro-media {
    width: 100%;
    overflow: visible;
    padding: 6px 0 10px;
  }

  /* 3. 浮动标签与原生图标重置 (抛弃易冲突的 scale) */
  .phone-mockup {
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
  }
  
  .float-tag {
    margin-top: 0;
    padding: 6px 10px;
    font-size: 11px;
    border-radius: 8px;
    gap: 6px;
  }
  
  .tag-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
  }

  /* 精确重置浮动位置 */
  .tag-location { left: -10px; top: 22%; }
  .tag-wallet { right: -15px; top: 8%; }
  .tag-charge { right: -10px; bottom: 18%; }
  .tag-top-right { top: 12px; right: 0; }
  .tag-center-left { top: 88px; left: 0; }
  .tag-bottom-right { bottom: 30px; right: 0; }

  /* 网格布局一律转单列 */
  .feature-grid, .fleet-grid, .advantages-grid, .solution-container {
    grid-template-columns: 1fr;
    gap: 16px;
    width: 100%;
  }

  .feature-card {
    margin-top: 0;
    padding: 16px;
    border-radius: 10px;
  }

  .circle-icon {
    width: 60px;
    height: 60px;
    margin-right: 12px;
  }

  .card-info h4 {
    font-size: 15px;
    line-height: 1.45;
  }

  .card-info p {
    font-size: 12px;
    line-height: 1.65;
  }
  
  .btn-primary {
    min-width: 128px;
    margin-bottom: 24px;
    padding: 10px 24px;
    text-align: center;
  }

  /* 4. 第三部分：运营平台 - 修复右侧背景裁切 */
  .operation-card {
    width: 100%;
    flex-direction: column;
    margin-top: 22px;
    border-radius: 12px;
  }
  .op-left {
    padding: 24px 16px 8px;
  }
  .op-item {
    justify-content: flex-start;
    align-items: flex-start;
    margin-bottom: 22px;
  }
  .circle-icon-small {
    width: 38px;
    height: 38px;
    margin-right: 12px;
  }
  .op-text h4 {
    font-size: 14px;
    line-height: 1.45;
  }
  .op-text p {
    font-size: 12px;
    line-height: 1.65;
  }
  .op-btn-area {
    text-align: center;
  }
  .op-right {
    min-height: 280px;
    background-size: 100% auto; 
    background-position: bottom center;
    padding: 24px 18px 140px; /* 底部加大 padding 避开仪表盘图形 */
  }
  .op-right-content h3 {
    font-size: 22px;
    line-height: 1.35;
  }
  .op-right-content p {
    font-size: 12px;
    line-height: 1.8;
    margin-top: 12px;
  }

  /* 5. 第四部分：车队管理 - 恢复并微缩中央视觉区，保障视觉连贯 */
  .fleet-section {
    background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/bian-zu-72-2x.png");
        background-size: 160% auto;
        background-position: top center;
        background-color: #fcfdfd;
        /* background-image: none; */
        /* background-color: #fff; */
        background-position-x: 0 10px;
        background-position-y: 10%;
    /* background-image: none; */
    /* background-color: #fff;  */
  }
  .fleet-col-center {
    display: flex; /* 恢复显示 */
    order: -1; /* 置于移动端列表最上方 */
    justify-content: center;
    align-items: center;
    height: 340px;
    margin-bottom: 20px;
    width: 100%;
  }
  .center-visual-area {
    transform: scale(0.65); 
    transform-origin: center center;
    height: 100%;
  }
  .fleet-card {
    background: #fff;
    border: 1px solid #eef1f4;
    margin-bottom: 14px;
    padding: 16px;
    flex: 1; /* 让内容较少的卡片自动撑开，与内容多的卡片保持等高 */
  display: flex;
  flex-direction: column;
  }
  .fleet-col-side {
    display: flex;
    flex-direction: column;
  }
  .fleet-card h4 {
    font-size: 15px;
    line-height: 1.45;
  }
  .check-list li {
    font-size: 12px;
    line-height: 1.65;
  }

  /* 6. 第五部分：优势模块调整 */
  .ad-item {
    align-items: flex-start;
  }
  .ad-icon-box {
    width: 68px;
    height: 68px;
    margin-right: 12px;
  }
  .ad-content h4 {
    font-size: 15px;
    line-height: 1.45;
  }
  .ad-content p {
    font-size: 12px;
    line-height: 1.7;
  }

  /* 7. 第六部分：解决方案垂直改版 */

  .sol-content-panel {
    padding: 18px;
  }
  .sol-text-area h3 {
    font-size: 18px;
    line-height: 1.4;
    
  }
  .sol-text-area p {
    font-size: 12px;
    line-height: 1.75;
  }
  .sol-img-box {
    height: 150px;
  }

  /* 8. 第七 & 八部分：紧凑网格适配 */
  .seventh-icons-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }
  .seventh-icon-card {
    padding: 10px 6px;
  }
  .icon-wrapper {
    width: 76px;
    height: 72px;
    margin-bottom: 10px;
  }
  .seventh-icon-card h4 {
    font-size: 12px;
    line-height: 1.45;
  }
  .statistics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 12px;
    width: 100%;
  }
  .stat-item h3 {
    font-size: 24px;
  }
  .stat-item p {
    font-size: 12px;
    text-align: center;
  }
}

/* =========================================
   超小屏幕极致优化 (480px 及以下)
========================================= */
@media (max-width: 480px) {
  .hero-section {
    padding-bottom: 200px;
  }
  .text-wrapper h1 {
    font-size: 24px;
  }
  .text-wrapper p {
    font-size: 14px;
  }
  .section-header h2 {
    font-size: 20px;
  }
  .phone-mockup {
    width: min(238px, 74vw);
  }
  .float-tag {
    font-size: 10px;
    padding: 5px 7px;
  }
  .tag-icon {
    width: 20px;
    height: 20px;
  }
  .center-visual-area {
    transform: scale(0.55); /* 极小屏幕进一步缩放车队管理核心 UI 保证不溢出 */
  }
  .op-right {
    min-height: 240px;
    padding-bottom: 96px;
  }
}

/* 确保新类名具备初始隐藏和绝对定位属性 */
.qr-box {
  opacity: 0;
  visibility: hidden;
  /* 此处需根据你的实际 UI 补充 position: absolute 等定位代码 */
}

.qr-box.show {
  opacity: 1;
  visibility: visible;
}

/* --- 新增：解决方案“了解更多”跳转链接样式 --- */
.sol-more-wrapper {
  text-align: right;
  margin-top: 20px;
  width: 100%;
}

.sol-more-link {
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  color: #616973; /* 使用你们的主题红 */
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 悬浮交互：颜色加深，带向右箭头微动特效，提升点击欲 */
.sol-more-link:hover {
  color: #616973;
  transform: translateX(5px); 
}

/* 移动端间距微调 */
@media (max-width: 768px) {
  .sol-more-wrapper {
    margin-top: 15px;
  }
  .sol-more-link {
    font-size: 13px;
  }
}

/* --- 按钮组布局与镂空按钮样式 --- */
.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 40px; /* 距离上方文字的间距 */
}

.btn-outline {
  display: inline-block;
  background-color: transparent;
  color: #ff4d4f; /* 主题红 */
  border: 1px solid #ff4d4f;
  padding: 12px 31px; /* 减去1px的border以保持和 primary 高度一致 */
  border-radius: 8px;
  font-size: 14px;
  font-weight: bold;
  transition: all 0.3s;
}

.btn-outline:hover {
  background-color: #fff2f2;
}

/* --- 底部数据统计条样式 --- */
.hero-stats {
  display: flex;
  align-items: center;
  margin-top: 60px; /* 距离上方按钮的间距 */
  gap: 30px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.stat-val {
  font-size: 26px;
  font-weight: bold;
  color: #ff4d4f; /* 主题红 */
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-val .unit {
  font-size: 16px; /* "年"字稍微小一点 */
  font-weight: normal;
}

.stat-label {
  font-size: 13px;
  color: rgba(101, 113, 130, 1);
}

.stat-line {
  width: 1px;
  height: 30px;
  background-color: rgba(255, 48, 14, 1);
}

/* --- 移动端适配 (针对新增内容的覆盖) --- */
@media (max-width: 768px) {
  .hero-actions {
    flex-direction: row; /* 移动端并排还是上下，视情况而定。如果太挤可以改 column */
    justify-content: center;
    gap: 15px;
  }
  
  .hero-stats {
    flex-wrap: wrap; /* 允许换行 */
    justify-content: center;
    gap: 15px 20px;
    margin-top: 40px;
  }
  
  .stat-item {
    align-items: center; /* 移动端居中对齐更好看 */
  }
  
  .stat-val {
    font-size: 20px;
  }
  
  .stat-line {
    display: none; /* 移动端换行后竖线会很奇怪，建议隐藏 */
  }
}

/* =========================================
   新增：核心优势区域 (Core Advantages)
========================================= */
.core-advantages-section {
  padding: 80px 0 40px;
  background-color: #fff;
}

/* 保证与原页面的内容宽度一致 */
.core-container {
  width: 83%;
  max-width: 1400px;
  margin: 0 auto;
}

.core-adv-header {
  margin-bottom: 40px;
  text-align: left;
}

.core-adv-header h2 {
  font-size: 32px;
  color: #333;
  font-weight: bold;
  margin-bottom: 20px;
}

.highlight-red {
  color: #ff4d4f;
}

.core-adv-desc {
  font-size: 16px;
  color: #666;
  line-height: 1.8;
  margin-bottom: 25px;
}

/* 胶囊型描边按钮 */
.btn-outline-pill {
  display: inline-block;
  color: #ff4d4f;
  border: 1px solid #ff4d4f;
  border-radius: 20px;
  padding: 8px 24px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s;
}

.btn-outline-pill:hover {
  background-color: #fff2f2;
}

/* 卡片网格布局 */
.core-adv-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin-bottom: 40px;
}

.adv-card {
  background: #fff;
  border-radius: 12px;
  /* 匹配设计图的轻微投影 */
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}

.adv-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.adv-card-img {
  width: 100%;
  height: 220px; /* 依据设计图比例控制高度 */
  background-color: #f5f7fa; /* 占位背景 */
  overflow: hidden;
}

.adv-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* 确保图片完整填充且不变形 */
  display: block;
}

.adv-card-content {
  padding: 24px 20px;
  text-align: left;
}

.adv-card-content h3 {
  font-size: 18px;
  color: #333;
  font-weight: bold;
  margin-bottom: 10px;
}

.adv-card-content p {
  font-size: 13px;
  color: #A8ACB0; /* 使用原项目自带的灰度色值 */
  line-height: 1.5;
}

/* 底部滑动提示 */
.scroll-hint {
  text-align: center;
  font-size: 12px;
  color: #c9cbcd;
  margin-top: 20px;
}

/* --- 移动端完美适配 --- */
@media (max-width: 768px) {
  .core-advantages-section {
    padding: 40px 0 20px;
  }
  .core-container {
    width: 100%;
    padding: 0 16px;
  }
  .core-adv-header h2 {
    font-size: 24px;
  }
  .core-adv-desc {
    font-size: 13px;
  }
  .desktop-only {
    display: none; /* 移动端去掉强制换行 */
  }
  .core-adv-cards {
    /* 移动端支持横向滑动或单列展示，这里采取符合滑动提示的横向滑动模式 */
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 15px;
    padding-bottom: 10px;
  }
  .core-adv-cards::-webkit-scrollbar {
    display: none;
  }
  .adv-card {
    flex: 0 0 85%; /* 移动端卡片露出一点边缘提示可滑动 */
  }
  .adv-card-img {
    height: 180px;
  }
}

/* =========================================
   新版：自主研发先锋 (竖向切换布局)
========================================= */
.features-section.new-layout {
  padding: 60px 0;
  /* background-color: #fcfdfd; */
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/wei-tu-2x-40.png");
}

.rd-box {
  background: #ffffff;
  border-radius: 20px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
  width: 83%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}

/* 卡片左下角的红色柔和光晕 */
.rd-bg-glow {
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 77, 79, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.rd-main {
  display: flex;
  flex-direction: row;
  position: relative;
  z-index: 1;
}

/* === 左侧侧边栏 === */
.rd-sidebar {
  width: 298px;
  padding: 50px 40px;
  /* border-right: 1px solid #f0f2f5; */
  flex-shrink: 0;
  position: relative;
  z-index: 999;
  background-color: rgba(255, 250, 250, 1);
}

.rd-sidebar-title h3 {
  font-size: 24px;
  font-weight: bold;
  color: #333;
  line-height: 1.4;
  margin-bottom: 40px;
}

.rd-nav-item {
  position: relative;
  padding: 20px; /* 四周均匀留白，形成真正的卡片感 */
  margin-bottom: 10px;
  cursor: pointer;
  border-radius: 12px; /* 卡片圆角 */
  background-color: transparent; /* 默认背景透明 */
  transition: all 0.3s ease;
  border-left: none; /* 彻底删掉原来生硬的边框 */
}/* 选中状态：白色卡片 + 轻微浮动阴影 */
.rd-nav-item.active {
  background-color: #ffffff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03); 
}

/* 核心：用绝对定位的伪元素画出左侧的“圆角红色胶囊” */
.rd-nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%); /* 垂直绝对居中 */
  width: 4px; /* 红条宽度 */
  height: 24px; /* 红条高度 */
  background-color: #ff4d4f;
  border-radius: 0 4px 4px 0; /* 仅右侧有圆角，左侧贴边 */
}

.rd-nav-title {
  font-size: 18px; /* 字体稍微放大匹配设计图 */
  font-weight: bold;
  color: #515861; /* 默认未选中时为深灰色 */
  margin-bottom: 8px;
  transition: color 0.3s;
}

/* 选中时标题变红 */
.rd-nav-item.active .rd-nav-title {
  color: #ff4d4f;
}

.rd-nav-desc {
  font-size: 12px;
  color: #A8ACB0;
  line-height: 1.5;
}

/* === 右侧内容区 === */
.rd-content-area {
  flex: 1;
  padding: 50px 40px;
  position: relative;
}

.rd-panel {
  display: none;
  animation: fadeIn 0.4s ease;
}

.rd-panel.active {
  display: block;
}

.rd-panel-inner {
  display: flex;
  gap: 100px;
  justify-content: space-between;
}

.rd-text-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.rd-text-item h4 {
  font-size: 18px;
  font-weight: bold;
  color: #333;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
}

.rd-text-item h4 .arrow {
  color: #333;
  margin-right: 8px;
  font-size: 14px;
}

.rd-text-item p {
  font-size: 12px;
  color: #83878C;
  line-height: 1.8;
  /* text-align: justify; */
}

.rd-media-col {
  width: 300px;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
}

/* === 底部保障体系栏 === */
.rd-bottom-bar {
  display: flex;
  align-items: center;
  padding: 30px 40px;
  border-top: 1px solid #f0f2f5;
  background-image: url("https://sld2025.oss-cn-shanghai.aliyuncs.com/gw/bian-zu-14-2x-4.png");
  background-size: 100% 100%;
  background-repeat: no-repeat;
  /* background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,1) 100%); */
  position: relative;
  z-index: 1;
  margin: 0 auto;
}

.rd-bottom-title {
  font-size: 14px;
  font-weight: bold;
  color: #ff4d4f;
  margin-right: 60px;
}

.rd-bottom-list {
  display: flex;
  gap: 50px;
  list-style: none;
}

.rd-bottom-list li {
  font-size: 13px;
  color: #333;
  display: flex;
  align-items: center;
  font-weight: 500;
}

.rd-bottom-list li .dot {
  width: 6px;
  height: 6px;
  background-color: #ff4d4f;
  border-radius: 50%;
  margin-right: 8px;
}

/* === 移动端完美适配 === */
@media (max-width: 900px) {
  .rd-box { width: 100%; border-radius: 12px; }
  .rd-main { flex-direction: column; }
  .rd-sidebar { width: 100%; padding: 30px 20px; border-right: none; border-bottom: 1px solid #f0f2f5; }
  .rd-sidebar-title h3 { font-size: 20px; margin-bottom: 20px; text-align: center; }
  .rd-nav-menu { display: flex; overflow-x: auto; scrollbar-width: none; gap: 15px; padding-bottom: 10px; }
  .rd-nav-menu::-webkit-scrollbar { display: none; }
  .rd-nav-item { flex: 0 0 auto; padding: 10px 15px; border-left: none; border-bottom: 3px solid transparent; margin-bottom: 0; background: #f9f9f9; border-radius: 8px; }
  .rd-nav-item.active { border-left: none; border-bottom: none; background: #fff2f2; }
  
  .rd-content-area { padding: 30px 20px; }
  .rd-panel-inner { flex-direction: column; gap: 30px; }
  .rd-media-col { width: 100%; margin-top: 20px; }
  
  .rd-bottom-bar { flex-direction: column; align-items: flex-start; padding: 20px; gap: 15px; }
  .rd-bottom-title { margin-right: 0; }
  .rd-bottom-list { flex-wrap: wrap; gap: 15px 20px; }
}
/* === 补充：修复移动端继承伪元素导致多出红条的问题 === */
@media (max-width: 900px) {
  .rd-nav-item.active::before {
    display: none; /* 移动端改为横向滚动了，不需要左侧红条 */
  }
}
/* =========================================
   新增模块：智能技术内核
========================================= */
.tech-core-section {
  padding: 80px 0;
  background-color: #fff;
}

.tech-container {
  width: 83%;
  max-width: 1400px;
  margin: 0 auto;
}

/* --- 顶部区域 --- */
.tech-top-area {
  display: flex;
  justify-content: space-between;
  gap: 90px;
  margin-bottom: 50px;
}

.tech-intro {
  flex: 0 0 35%;
}

.tech-intro h2 {
  font-size: 28px;
  font-weight: bold;
  color: #333;
  margin-bottom: 20px;
}

.tech-intro p {
  font-size: 14px;
  color: #83878C;
  line-height: 1.8;
  /* text-align: justify; */
}

.tech-features-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  row-gap: 30px;
  column-gap: 20px;
}

.tech-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.tf-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.tf-text h4 {
  font-size: 16px;
  font-weight: bold;
  color: #333;
  margin-bottom: 6px;
}

.tf-text p {
  font-size: 12px;
  color: #A8ACB0;
  line-height: 1.4;
}

/* --- 中部卡片区域 --- */
.tech-cards-area {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin-bottom: 60px;
}

.tc-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}

.tc-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.tc-img {
  width: 100%;
  /* height: 180px; */
  /* background: #f5f7fa; */
  overflow: hidden;
}

.tc-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tc-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.tc-content h3 {
  font-size: 18px;
  font-weight: bold;
  color: #333;
  margin-bottom: 12px;
}

.tc-content p {
  font-size: 12px;
  color: #A8ACB0;
  line-height: 1.8;
  /* text-align: justify; */
  flex: 1; /* 撑开中间内容，让底部标签对齐 */
  /* margin-bottom: 20px; */
}

.tc-tags {
  display: flex;
  /* flex-wrap: wrap; */
  justify-content: space-between;
  align-items: center;
  /* gap: 12px 15px; */
  border-top: 1px dashed #eee;
  padding-top: 15px;
}

.tc-tags span {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  /* color: #ff4d4f; */
  color: #797782;
}

.tc-tags span img {
  width: 22px;
  height: 22px;
  margin-right: 4px;
}

/* --- 底部方向标签 --- */
.tech-bottom-area {
  text-align: center;
  margin-top: 20px;
}

.tech-bottom-area h3 {
  font-size: 26px;
  font-weight: bold;
  color: #333;
  margin-bottom: 50px;
}

.tech-bottom-area .highlight-red {
  color: #ff4d4f;
}

.tech-directions {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 15px;
}

.td-item {
  /* padding: 12px 24px; */
  /* width: 286px; */
  width: 23%;
  height: 98px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 4px;
  font-size: 14px;
  color: #333;
  cursor: pointer;
  transition: all 0.3s ease;
}

.td-item.active,
.td-item:hover {
  border-color: #ff4d4f;
  color: #ff4d4f;
}

/* --- 移动端适配 (900px 以下) --- */
@media (max-width: 900px) {
  .tech-container {
    width: 100%;
  }
  
  .tech-top-area {
    flex-direction: column;
    gap: 30px;
  }
  
  .tech-intro {
    flex: auto;
    text-align: center;
  }
  
  .tech-intro p {
    text-align: left;
  }
  
  .tech-features-grid {
    grid-template-columns: 1fr;
    row-gap: 20px;
  }
  
  .tech-cards-area {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .tech-bottom-area h3 {
    font-size: 22px;
  }
  
  .tech-directions {
    flex-direction: column;
  }
  
  .td-item {
    width: 100%;
    text-align: center;
  }
}



/* 当切换到B端后台时，动态注入父容器背景 */
/* =========================================
   自研先锋父容器背景（中英文国际化联动）
========================================= */
/* =========================================
   B端后台布局 (绝对层叠覆盖方案)
========================================= */

/* =========================================
   B端后台布局 (终极绝对层叠覆盖方案)
========================================= */

/* 1. 父容器：强行洗掉所有 flex 残留，作为绝对定位的画板 */
.b-end-overlay-layout {
  position: relative !important;
  display: block !important; 
  min-height: 480px !important; /* 保证有足够的高度放下图片 */
  width: 100% !important;
  padding: 0 !important;
}

/* 2. 顶层文字区：限制宽度，使其安分地待在左侧上方 */
.b-end-overlay-layout .rd-text-col {
  position: relative;
  z-index: 10; /* 层级最高 */
  width: 100%;
  max-width: 230px; /* 控制文字不要跑到右边去 */
  padding-top: 40px;
  margin: 0 !important;
}

/* 3. 底层图片容器：定死在右侧，并拉宽尺寸伸进文字下方 */
.b-end-overlay-layout .b-end-img-layer {
  position: absolute;
  top: 50%;
  right: -5%; /* 靠右，轻微贴边 */
  transform: translateY(-50%); /* 垂直精准居中 */
  width: 140%; /* 核心：宽度占父级的80%，左侧边缘必然会钻进那400px的文字底下 */
  z-index: 0; /* 当作背景垫底 */
  pointer-events: none; /* 防止巨大的图片框挡住文字的鼠标复制/点击 */
  display: flex;
  justify-content: flex-end;
}

/* 4. 图片本体：强行破除全局 max-width 限制！ */
.b-end-overlay-layout .b-end-img-layer img {
  width: 100% !important; 
  max-width: none !important; /* 【解决截图里图片缩小的关键】 */
  object-fit: contain;
}

/* 5. 顶层按钮：死死钉在正下方 */
.b-end-overlay-layout .b-end-btn {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10; /* 层级最高 */
  margin: 0 !important;
  box-shadow: 0 4px 16px rgba(255, 77, 79, 0.4);
}

/* === 移动端降级适配 (单列显示) === */
@media (max-width: 900px) {
  .b-end-overlay-layout {
      min-height: 550px !important; 
  }
  .b-end-overlay-layout .rd-text-col {
      max-width: 100%;
      text-align: center;
      padding-top: 0;
  }
  .b-end-overlay-layout .b-end-img-layer {
      top: 130px; /* 移动端屏幕窄，图片下移避免挡死文字 */
      transform: none;
      right: 0;
      width: 100%;
      justify-content: center;
  }
}
/* =========================================
   B端后台布局 - 中英文图片国际化切换逻辑
========================================= */

/* --- 默认状态（中文环境） --- */
/* 显示中文图，隐藏英文图 */
.b-end-overlay-layout .b-end-img-layer .b-end-zh {
  display: block !important;
}
.b-end-overlay-layout .b-end-img-layer .b-end-en {
  display: none !important;
}

/* --- 国际化状态（英文环境） --- */
/* 当 html[lang="en"] 激活时，反转显隐状态 */
html[lang="en"] .b-end-overlay-layout .b-end-img-layer .b-end-zh {
  display: none !important;
}
html[lang="en"] .b-end-overlay-layout .b-end-img-layer .b-end-en {
  display: block !important;
}

/* --- 第七部分：底部按钮居中 --- */
.seventh-btn-wrapper {
  text-align: center; /* 核心：让内部的 a 标签水平居中 */
  margin-top: 40px;   /* 增加与上方图标矩阵的间距 */
  width: 100%;
}

/* 如果您不打算在 HTML 里加类名，可以用这段 CSS 把文字强行渲染成按钮 */
.seventh-btn-wrapper a {
  display: inline-block;
  background-color: #ff4d4f; /* 主题红 */
  color: #fff;
  padding: 12px 32px;
  border-radius: 8px;
  font-size: 14px;
  transition: background 0.3s;
}

.seventh-btn-wrapper a:hover {
  background-color: rgba(255, 48, 14, 1);
}