/* 容器宽度规范 */
.container {
  max-width: 1920px;
  margin: 0 auto;
}

/* 文字区域宽度规范 */
.text-container {
  width: 1200px;
  margin: 0 auto;
}

/* 导航头部 */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding-top: 32px;
  padding-bottom: 32px;
  transition: all 0.3s ease;
}

/* 导航背景层 */
.header-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(67, 95, 216, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.header.scrolled .header-bg {
  opacity: 1;
}

.header.scrolled {
  padding-top: 20px;
  padding-bottom: 20px;
}

.header .container {
  position: relative;
  z-index: 1;
}

.header .text-container {
  display: flex;
  align-items: center;
}

/* 第一板块：Banner区域 */
.banner-section {
  max-width: 2560px;
  height: 100vh;
  max-height: 1080px;
  background: url("../../images/pc/bg-banner.png") no-repeat center center;
  background-size: cover;
  position: relative;
  margin-top: -96px;
  padding-top: 96px;
  margin:-96px auto 0 auto;
}

/* Logo */
.logo {
  /* margin-left 由 text-container 的边距控制 */
}

.logo img {
  width: 260px;
  height: 32px;
  display: block;
}

/* 导航条 */
.nav {
  display: flex;
  align-items: center;
  margin-left: 244px;
}

.nav-item {
  font-size: 16px;
  color: #ffffff;
  text-decoration: none;
  margin-right: 58px;
  position: relative;
  padding-bottom: 8px;
}

.nav-item:last-child {
  margin-right: 0;
}

.nav-item:hover {
  color: #ffffff;
}

/* 导航下滑线 */
.nav-item::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #ffffff;
  transition: width 0.3s ease;
}

.nav-item:hover::after,
.nav-item.active::after {
  width: 100%;
}

/* 语言切换 */
.language-switch {
  margin-left: auto;
  position: relative;
}

.language-current {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.lang-icon {
  width: 20px;
  height: 20px;
  margin-right: 8px;
}

.arrow-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.language-switch.active .arrow-icon {
  transform: rotate(180deg);
}

/* 语言下拉框 */
.language-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 100px;
  background-color: rgba(255, 255, 255, 0.45);
  border: 1px solid #979797;
  border-radius: 6px;
  padding: 18px 18px;
  display: none;
}

.language-switch.active .language-dropdown {
  display: block;
}

.lang-option {
  font-size: 14px;
  color: #ffffff;
  padding-top: 6px;
  padding-bottom: 6px;
  border-bottom: 1px solid #ffffff;
  cursor: pointer;
  transition: color 0.3s ease;
  text-align: center;
  text-decoration: none;
  display: block;
}
.lang-option:first-child {
  padding-top: 0;
}
.lang-option:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.lang-option:hover {
  color: #7d40ff;
}

.lang-option.active {
  color: #7d40ff;
  font-weight: 600;
}

/* Banner主文字 */
.banner-title {
  margin-top: 80px;
}

.banner-title p {
  font-size: 60px;
  line-height: 84px;
  color: #ffffff;
  margin: 0;
  letter-spacing: 10px;
}

.banner-title .highlight {
  color: #a083de;
}

/* 第二板块：关于我们 */
.about-section {
  max-width: 2560px;  
  width: 100%;
  height: 100vh;
  max-height: 1080px;
  background: url("../../images/pc/bg-banner-about-left.png") no-repeat center
    center;
  background-size: cover;
  padding-top: 137px;
  margin:0 auto 0 auto;
}

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

/* 左侧内容 */
.about-left {
  flex-shrink: 0;
}

/* Logo图标 */
.about-logo img {
  width: 216px;
  height: 124px;
  display: block;
}

/* 装饰线 */
.decorative-line {
  width: 60px;
  margin-top: 16px;
  display: flex;
  align-items: center;
  position: relative;
}

.line-main {
  width: 52px;
  height: 4px;
  background-color: #7d40ff;
  display: block;
}

.line-dot {
  width: 4px;
  height: 4px;
  background-color: #ffffff;
  display: block;

  opacity: 0;
}
.line-dot.purple {
  width: 4px;
  height: 4px;
  background-color: #7d40ff;
  display: block;
  opacity: 1;
}

/* 关于我们标题 */
.about-title {
  margin-top: 23px;
  font-size: 30px;
  line-height: 42px;
  letter-spacing: 1px;
  color: #393939;
  margin-bottom: 0;
}

/* 竖型导航 */
.vertical-nav {
  margin-top: 120px;
  display: flex;
  flex-direction: column;
}

.vertical-nav-item {
  font-size: 18px;
  line-height: 25px;
  color: #000000;
  text-decoration: none;
  margin-bottom: 28px;
  position: relative;
  display: inline-block;
  width: fit-content;
  transition: color 0.3s ease;
}

.vertical-nav-item:last-child {
  margin-bottom: 0;
}

.vertical-nav-item:hover {
  color: #7d40ff;
}

.vertical-nav-item.active {
  color: #7d40ff;
}

/* 竖型导航底部线 */
.vertical-nav-item::after {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 3px;
  background-color: #7d40ff;
  transition: width 0.3s ease;
}

.vertical-nav-item.active::after {
  width: 100%;
}

/* 加号图标 */
.add-icon {
  margin-top: 146px;
}

.add-icon img {
  width: 60px;
  height: 60px;
  display: block;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.add-icon img:hover {
  transform: scale(1.1);
}

/* 右侧内容 */
.about-right {
  flex: 1;
  margin-left: 80px;
  margin-top: -13px;
}

/* 卡片排 */
.card-row {
  display: flex;
  gap: 35px;
  margin-bottom: 35px;
}

.card-row:last-child {
  margin-bottom: 0;
}

/* 信息卡片 */
.info-card {
  width: 430px;
  height: 200px;
  background-color: #ffffff;
  padding: 33px 39px;
  box-sizing: border-box;
}

/* 卡片日期部分 */
.card-date {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.date-num {
  font-size: 30px;
  color: #000000;
  line-height: 42px;
  letter-spacing: 1px;
}

.date-full {
  width: 250px;
  font-size: 16px;
  color: #000000;
  line-height: 22px;
  font-family: bold;
}

/* 卡片年份 */
.card-year {
  font-size: 14px;
  color: #999999;
  line-height: 20px;
  margin-top: 0;
}

/* 卡片内容 */
.card-content {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.content-line {
  width: 70px;
  height: 1px;
  background-color: #bfbfbf;
  display: block;
  flex-shrink: 0;
}

.content-text {
  width: 340px;
  font-size: 14px;
  color: #999999;
  line-height: 20px;
  margin: 0;
  margin-left: 10px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 第三板块：产业布局 */
.layout-section {
  max-width: 2560px;  
  width: 100%;
  max-height: 1080px;
  height: 100vh;
  background: url("../../images/pc/bg-banner-layout.png") no-repeat center
    center;
  background-size: cover;
  padding-top: 137px;
  margin:0 auto 0 auto;
}

.layout-section .container {
  position: relative;
  height: calc(100vh - 137px);
  max-height: calc(1080px - 137px);
}

.layout-section .text-container {
  position: relative;
  height: 100%;
}

/* Logo图标 */
.layout-logo img {
  width: 300px;
  height: 124px;
  display: block;
}

/* 产业布局标题 */
.layout-title {
  margin-top: 23px;
  font-size: 30px;
  color: #ffffff;
  line-height: 35px;
  letter-spacing: 1px;
  margin-bottom: 0;
}

/* 描述文字 */
.layout-desc {
  width:450px;
  margin-top: 20px;
  font-size: 22px;
  color: #ffffff;
  line-height: 30px;
  margin-bottom: 0;
}

/* 加号图标 */
.layout-add-icon {
  position: absolute;
  bottom: 150px;
  left: 0;
}

.layout-add-icon img {
  width: 60px;
  height: 60px;
  display: block;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.layout-add-icon img:hover {
  transform: scale(1.1);
}

/* 右侧置底区域 */
.layout-bottom-box {
  position: absolute;
  bottom: 0;
  right: 0;
  background: url("../../images/pc/im-num-purple.png") no-repeat center center;
  background-size: 100% 100%;
  padding:80px 47px 143px 39px;
}

.bottom-text {
  width: 642px;
  font-size: 16px;
  color: #ffffff;
  line-height: 22px;
  margin: 0;
}

.bottom-button {
  width: 160px;
  height: 50px;
  background: #ffffff;
  border-radius: 5px;
  border: none;
  color: #7d40ff;
  line-height: 22px;
  font-size: 16px;
  margin-top: 52px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: block;
  text-align: center;
  line-height: 50px;
}

.bottom-button:hover {
  background: #7d40ff;
  color: #ffffff;
}

/* 第四板块：APP下载 */
.app-section {
  max-width: 2560px;  
  width: 100%;
  max-height: 1080px;
  height: 100vh;
  background: url("../../images/pc/bg-banner-about-right.png") no-repeat center
    center;
  background-size: cover;
  padding-top: 146px;
  margin:0 auto 0 auto;
}

.app-section .container {
  position: relative;
  height: calc(100vh - 146px);
  max-height: calc(1080px - 146px);
}

.app-section .text-container {
  position: relative;
  height: 100%;
}

/* Logo图标 */
.app-logo img {
  width: 216px;
  height: 124px;
  display: block;
}

/* APP信息区 */
.app-info {
  display: flex;
  align-items: flex-start;
  margin-top: 57px;
}

.app-icon {
  width: 126px;
  height: 126px;
  display: block;
  margin-right: 20px;
}

.app-info-right {
  flex: 1;
}

.app-title {
  font-size: 52px;
  color: #000000;
  line-height: 73px;
  letter-spacing: 2px;
  margin: 0;
}

.app-subtitle {
  font-size: 22px;
  color: #999999;
  line-height: 30px;
  letter-spacing: 1px;
  margin: 15px 0 0 0;
}

/* 描述文字 */
.app-desc {
  font-size: 18px;
  color: #999999;
  line-height: 25px;
  margin: 20px 0 0 0;
}

/* 下载区域 */
.download-area {
  display: flex;
  align-items: flex-start;
  margin-top: 93px;
}

/* 下载按钮组 */
.download-buttons {
  display: flex;
  flex-direction: column;
}

.download-btn {
  width: 248px;
  position: relative;
  margin-bottom: 42px;
}

.download-btn .btn-content {
  width: 248px;
  height: 66px;
  background: #ffffff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.download-btn:last-child {
  margin-bottom: 0;
}

.download-btn .btn-content img {
  width: 44px;
  height: 44px;
  margin-right: 14px;
}

.download-btn .btn-content span {
  font-size: 18px;
  color: #999;
  line-height: 25px;
}

.download-btn .btn-content:hover {
  background: #7d40ff;
}

.download-btn .btn-content:hover span {
  color: #ffffff;
}

/* 按钮下方的二维码 */
.btn-qrcode {
  position: absolute;
  top: calc(100% + 24px);
  left: 50%;
  transform: translateX(-50%);
  width: 248px;
  height: 248px;
  background: #ffffff;
  border-radius: 8px;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 10;
  padding: 10px;
  box-sizing: border-box;
}

.btn-qrcode img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.download-btn:hover .btn-qrcode {
  display: flex;
}

/* 二维码 */
.qrcode-box {
  margin-left: 25px;
  text-align: center;
}

.qrcode {
  width: 135px;
  height: 135px;
  display: block;
  margin:0 auto;
}

.qrcode-text {
  font-size: 20px;
  color: #999999;
  line-height: 28px;
  letter-spacing: 1px;
  margin: 9px 0 0 0;
}

/* 右侧手机图片 */
.app-phone {
  position: absolute;
  bottom: 0;
  right: 0;
}

.app-phone img {
  width: 600px;
  height: 800px;
  display: block;
}

/* 第五板块：关于马兰花 */
.aboutmlh-section {
  max-width: 2560px;  
  width: 100%;
  height: 100vh;
  max-height: 1080px;
  position: relative;
  padding-top: 129px;
  overflow: hidden;
  cursor: pointer;
  margin:0 auto 0 auto;
}

/* 视频背景 */
.video-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}

.aboutmlh-section .container {
  position: relative;
  z-index: 1;
}

.aboutmlh-section .text-container {
  position: relative;
  max-height: calc(1080px - 129px);
  height: calc(100vh - 129px);
}

/* 播放按钮 */
.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  cursor: pointer;
  transition: opacity 0.3s ease, transform 0.3s ease;
  opacity: 1;
}

.video-play-btn.hide {
  opacity: 0;
  pointer-events: none;
}

.video-play-btn img {
  width: 123px;
  height: 123px;
  display: block;
}

.video-play-btn:hover {
  transform: translate(-50%, -50%) scale(1.1);
}

/* Logo图标 */
.aboutmlh-logo img {
  width: 207px;
  height: 137px;
  display: block;
}

/* 白色半透明装饰线 */
.white-line .line-main {
  background-color: rgba(255, 255, 255, 0.5);
}

.line-dot.white {
  width: 4px;
  height: 4px;
  background-color: rgba(255, 255, 255, 0.5);
  display: block;
  opacity: 1;
}

/* 关于马兰花标题 */
.aboutmlh-title {
  margin-top: 23px;
  font-size: 30px;
  color: #ffffff;
  line-height: 42px;
  letter-spacing: 1px;
  margin-bottom: 0;
}

/* 置底文字模块 */
.aboutmlh-bottom-text {
  position: absolute;
  bottom: 10%;
  left: 0;
  width: 1200px;
  height: 220px;
  background: #a083de;
  opacity: 0.88;
  border-top-left-radius: 50px;
  display: flex;
  align-items: center;
  padding: 0 40px;
  box-sizing: border-box;
}

.aboutmlh-bottom-text p {
  font-size: 18px;
  color: #ffffff;
  line-height: 25px;
  margin: 0;
}

/* 第六板块：更多服务 */
.service-section {
  max-width: 2560px;  
  background: #ffffff;
  padding-top: 137px;
  padding-bottom: 159px;
  margin:0 auto 0 auto;
}

.service-section .text-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

/* 左侧内容 */
.service-left {
  flex-shrink: 0;
}

/* Logo图标 */
.service-logo img {
  width: 275px;
  height: 124px;
  display: block;
}

/* 更多服务标题 */
.service-title {
  margin-top: 23px;
  font-size: 30px;
  color: #000000;
  line-height: 35px;
  letter-spacing: 1px;
  margin-bottom: 0;
}

/* 右侧内容 */
.service-right {
  flex: 0 0 auto;
  margin-left: auto;
  display: flex;
  gap: 48px;
}

/* 服务卡片 */
.service-card {
  width: 407px;
  height: 169px;
  border: 1px solid #dcdcdc;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  cursor: pointer;
  transition: all 0.3s ease;
}

.service-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transform: translateY(-5px);
}

.card-icon {
  width: 75px;
  height: 69px;
  flex-shrink: 0;
  margin-right: 46px;
}

.service-section .card-icon-tall {
  height: 77px;
}

.service-section .card-content {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.card-title {
  font-size: 22px;
  color: #393939;
  line-height: 30px;
  letter-spacing: 1px;
  margin: 0 0 8px 0;
}

.card-subtitle {
  font-size: 16px;
  color: #999;
  line-height: 22px;
  margin: 0;
}

/* 页尾 */
.footer {
  background: #282335;
  padding: 60px 0 30px;
}

/* 上部分 */
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 140px;
}

.footer-title {
  font-size: 18px;
  color: #ffffff;
  line-height: 25px;
  margin: 0 0 20px 0;
  font-weight: 600;
}

/* 右侧整体区域 */
.footer-right-wrapper {
  display: flex;
  align-items: center;
  margin-left: auto;
}

/* 快速链接 */
.footer-links {
  flex-shrink: 0;
  margin-right: 79px;
}

.link-list {
  list-style: none;
  padding: 0;
  margin: 32px 0 0 0;
}

.link-list li {
  margin-bottom: 0;
}

.link-list a {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.3);
  line-height: 32px;
  text-decoration: none;
  transition: color 0.3s ease;
}

.link-list a:hover {
  color: #7d40ff;
}

/* 联系信息 */
.footer-contact {
  flex-shrink: 0;
}

.contact-list {
  display: flex;
  flex-direction: column;
}

.contact-item {
  display: flex;
  align-items: center;
  font-size: 22px;
  color: #ffffff;
  line-height: 30px;
  margin-bottom: 28px;
}

.contact-item:last-child {
  margin-bottom: 0;
}

.contact-icon {
  width: 36px;
  height: 36px;
  margin-right: 8px;
}

/* 二维码 */
.footer-qrcode {
  flex-shrink: 0;
  margin-left: 90px;
  text-align: center;
}

.qrcode-img {
  width: 103px;
  height: 103px;
  display: block;
  margin: 0 auto 15px auto;
}

.qrcode-text {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.5);
  margin: 0;
  letter-spacing: 1px;
  line-height: 28px;
  color: #999;
  margin-top: 9px;
}

/* 下部分 */
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
}

.footer-bottom-left,
.footer-bottom-center,
.footer-bottom-right {
  text-align: left;
}

.footer-bottom-left {
  flex-shrink: 0;
  margin-left: 10px;
}

.footer-bottom-center {
  flex-shrink: 0;
}

.footer-bottom-right {
  margin-left: auto;
  display: flex;
  gap: 30px;
}

.copyright {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 20px;
  margin: 0;
}

.info-link {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color 0.3s ease;
}

.info-link:hover {
  color: #7d40ff;
}