/* ── 基础重置 ── */
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
  color: #333;
}
a { text-decoration: none; color: inherit; }
ul, li { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }

/* ── 通用 container ── */
.container {
  width: 96%;
  max-width: 1600px;
  margin: 0 auto;
}

/* ═══════ 头部：视频 + 导航 ═══════ */
.header {
  position: relative;
  width: 100%;
  height: auto;
  overflow: hidden;
}

/* 视频背景 */
.video-bg {
  position: relative;
  width: 100%;
  overflow: hidden;
}
.video-bg video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}
.video-bg .video-poster {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  display: none;
}
.video-bg .video-poster.show {
  display: block;
}
.video-bg .banner-img {
  width: 100%;
  object-fit: cover;
  display: block;
}
.page-header-banner .video-bg {
}
.video-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 2;
}

/* 视频文字 */
.video-text {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  text-align: left;
  color: #fff;
  z-index: 3;
  width: 96%;
  max-width: 1600px;
}
.video-text .line-1 {
  font-size: 3.0rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 0 0 18px;
}
.video-text .line-2 {
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.8;
  opacity: 0.95;
  margin: 0;
}
@media (max-width: 768px) {
  .video-text .line-1 { font-size: 1.6rem; }
  .video-text .line-2 { font-size: 0.95rem; }
}
@media (max-width: 480px) {
  .video-text { top: 60%; }
  .video-text .line-1 { font-size: 1.2rem; margin: 0 0 8px; }
  .video-text .line-2 { font-size: 0.65rem; }
}

/* ── 导航条（桌面）── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10;
  background: rgba(0, 0, 0, 0.5);
  padding: 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  height: 80px;
}
.logo { display: flex; align-items: center; }
.logo img { height: 56px; width: auto; }

/* ── 桌面端菜单 ── */
.nav-list {
  display: flex;
  align-items: center;
  gap: 56px;
  margin-left: auto;
  margin-right: 32px;
}
.nav-list a {
  color: #fff;
  font-size: 1rem;
  line-height: 80px;
  padding: 0 4px;
  position: relative;
  transition: font-weight 0.2s, color 0.2s;
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -10px;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: #00a2e9;
  transition: width 0.3s ease;
}
.nav-list a:hover,
.nav-list a.active {
  font-weight: 700;
}
.nav-list a:hover::after,
.nav-list a.active::after {
  width: 100%;
}

/* 汉堡按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 20;
  margin-left: auto;
  margin-right: 12px;
}
.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}
.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── 二级下拉菜单（桌面 hover）── */
.nav-list .has-sub { position: relative; }
.sub-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 140px;
  background: rgba(0, 0, 0, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  padding: 6px 0;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s, transform 0.25s;
  transform: translateX(-50%) translateY(6px);
  z-index: 100;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.has-sub:hover > .sub-menu,
.has-sub:focus-within > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.sub-menu a {
  display: block;
  padding: 9px 18px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.88rem;
  line-height: 1.4;
  text-align: center;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}
.sub-menu a:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-weight: 600;
}

/* ── 搜索框 ── */
.search {
  display: flex;
  align-items: stretch;
  height: 36px;
  border: 1px solid #fff;
  border-radius: 18px;
  padding: 0 4px 0 16px;
  background: transparent;
  width: 160px;
  margin-left: 48px;
  flex-shrink: 0;
  overflow: hidden;
}
.search input {
  flex: 1;
  border: 0; outline: 0; background: transparent;
  color: #fff;
  font-size: 0.9rem;
  min-width: 0; padding: 0;
}
.search input::placeholder { color: rgba(255, 255, 255, 0.7); }
.search button {
  border: 0; background: transparent;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; padding: 0 6px; color: #fff; cursor: pointer;
}
.search button svg {
  width: 18px; height: 18px;
  overflow: visible;
}
/* ═══════ 移动端菜单（完全独立）══════════════════════ */
.nav-mobile {
  display: none;
  position: fixed;
  top: 0; right: -100%;
  width: 280px;
  max-width: 80vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.97);
  flex-direction: column;
  align-items: stretch;
  padding: 70px 0 20px;
  gap: 0;
  transition: right 0.3s ease;
  overflow-y: auto;
  z-index: 15;
  order: 4;
}
.nav-mobile.active { right: 0; }

/* 一级链接 */
.mobile-link {
  display: block;
  padding: 14px 24px;
  color: #ffffff;
  font-size: 1rem;
  line-height: 1.4;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.mobile-link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #00a2e9;
}

/* details/summary 折叠 */
.mobile-details {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.mobile-details summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  color: #ffffff;
  font-size: 1rem;
  cursor: pointer;
  user-select: none;
}
.mobile-details summary::-webkit-details-marker { display: none; }
.mobile-details summary::after {
  content: "+";
  color: #00a2e9;
  font-size: 1.2rem;
  font-weight: 700;
  transition: transform 0.2s;
}
.mobile-details[open] summary::after {
  content: "−";
  transform: rotate(0deg);
}

/* 二级菜单 */
.mobile-sub {
  background: rgba(0, 0, 0, 0.6);
  border-left: 3px solid #00a2e9;
  padding: 4px 0;
}
.mobile-sub a {
  display: block;
  padding: 12px 24px 12px 40px;
  color: #ffffff;
  font-size: 0.95rem;
  line-height: 1.5;
  text-align: left;
}
.mobile-sub a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #00a2e9;
}

/* ═══════ 平板断点（≤1200px）隐藏搜索框 ════════════════ */
@media (max-width: 1200px) {
  .search { display: none; }
}

/* ═══════ 移动端断点（≤768px）═══════════════════════ */
@media (max-width: 768px) {
  .nav-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 0;
  }

  .menu-toggle { display: flex; }

  /* 隐藏桌面菜单和搜索 */
  .nav-list { display: none; }
  .search { display: none; }

  /* 显示移动端独立菜单 */
  .nav-mobile { display: flex; }
}

@media (max-width: 1200px) {
  .nav-list > a {
    padding: 28px 15px;
    font-size: 14px;
  }
}

@media (max-width: 992px) {
  .nav-inner { height: 64px; }
  .nav-list { gap: 36px; margin-right: 16px; }
  .nav-list a { font-size: 0.9rem; line-height: 64px; }
  .logo img { height: 40px; }
}

/* ═══════ 占位内容区 ═══════ */
section { padding: 60px 0; }
section h2 {
  font-size: 1.8rem;
  text-align: center;
  margin-bottom: 24px;
  color: #1a1a2e;
}

/* ═══════ 产品区域 ═══════ */
.products-section {
  position: relative;
  width: 100%;
  background: #fff;
  overflow: hidden;
  padding: 0;
}

.products-bg {
  position: absolute;
  inset: 0;
  background: #ffffff;
  z-index: 1;
}
.products-bg canvas {
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: auto;
}

.products-content {
  position: relative;
  z-index: 2;
  padding-top: 60px;
  padding-bottom: 60px;
  text-align: center;
}

/* 标题区 */
.products-header {
  margin-bottom: 40px;
}
.products-title-cn {
  font-size: 2.4rem;
  font-weight: 600;
  color: #000;
  margin: 0 0 0px;
}
.products-title-en {
  font-size: 1.8rem;
  font-weight: 700;
  color: #d9d9d9;
  text-transform: uppercase;
  margin: 0 0 20px;
}
.products-divider {
  width: 100%;
  height: 1px;
  background: #d9d9d9;
}

/* 五个产品项 */
.products-items {
  display: flex;
  justify-content: space-between;
  margin: 0px 0 0;
}
.product-item {
  cursor: pointer;
  position: relative;
  padding: 14px 0;
  flex: 0 0 20%;
  max-width: 20%;
  text-align: left;
  transition: color 0.3s;
}
.product-label {
  font-size: 1.15rem;
  font-weight: 500;
  color: #333;
  letter-spacing: 0.08em;
  padding-left: 18px;
  transition: color 0.3s;
}
.product-sub {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  margin-top: 16px;
}
.product-sub a {
  font-size: 0.95rem;
  color: #000;
  line-height: 1.4;
  letter-spacing: 0.04em;
  padding-left: 18px;
  position: relative;
  text-decoration: none;
}
.product-sub a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 8px;
  height: 8px;
  background-color: #00a2e9;
}
.product-item.active .product-label {
  color: #044f9f;
  font-weight: 700;
}

/* 下方信息层 */
.products-info {
  position: relative;
}
.products-info-item {
  display: none;
  max-width: 100%;
  margin: 0 auto;
  padding: 16px 0;
  animation: productsFadeIn 0.35s ease;
}
.products-info-item.active {
  display: block;
}
.products-info-item p {
  font-size: 1rem;
  color: #555;
  line-height: 1.8;
  letter-spacing: 0.04em;
  margin: 0;
}

@keyframes productsFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .products-title-cn { font-size: 1.6rem; }
  .products-title-en { font-size: 0.85rem; letter-spacing: 0.2em; }
  .products-items {
    gap: 24px;
    flex-wrap: wrap;
  }
  .product-item {
    flex: 0 0 calc((100% - 48px) / 3);
    max-width: calc((100% - 48px) / 3);
  }
  .product-label { font-size: 1rem; }
  .product-sub a { font-size: 0.88rem; }
}

/* ═══════ 荣誉资质区域 ═══════ */
.honors-section {
  position: relative;
  width: 100%;
  background: url('../img/yybj.jpg') center/cover no-repeat;
  padding: 60px 0;
}

.honors-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.honors-header {
  margin-bottom: 30px;
}

.honors-title-cn {
  font-size: 2.4rem;
  font-weight: 600;
  color: #000;
  margin: 0 0 0px;
}

.honors-title-en {
  font-size: 1.8rem;
  font-weight: 700;
  color: #d9d9d9;
  text-transform: uppercase;
  margin: 0 0 20px;
}

.honors-divider {
  width: 100%;
  height: 1px;
  background: #d9d9d9;
}

.honors-track-wrapper {
  overflow: hidden;
  width: 100%;
  margin-top: 50px;
}

.honors-track {
  display: flex;
  gap: 28px;
  width: max-content;
  animation: honorsScroll 36s linear infinite;
}

.honors-cert {
  height: 380px;
  width: auto;
  flex-shrink: 0;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.25);
  background: #fff;
}

@keyframes honorsScroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.honors-stats {
  margin-top: 50px;
}

.honors-stats-grid {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
  gap: 0;
}

.honors-stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: calc(25% - 18px);
}

.honors-stat-value {
  position: relative;
  display: inline-flex;
  align-items: flex-start;
  justify-content: center;
  line-height: 1.1;
  padding-right: 1em;
}

.honors-stat-number {
  font-size: 3rem;
  font-weight: 900;
  font-family: "Microsoft YaHei", "SimHei", sans-serif;
  color: #044f9f;
  line-height: 1.1;
}

.honors-stat-unit {
  position: absolute;
  top: -0.2em;
  right: 0;
  font-size: 1.3rem;
  font-weight: 700;
  color: #044f9f;
  line-height: 1.1;
}

.honors-stat-item:nth-child(4) .honors-stat-unit {
  right: -20px;
}

.honors-stat-label {
  font-size: 1rem;
  color: #000;
  line-height: 1.4;
}

.page-stats-box {
  border-top: 1px solid #e0e0e0;
  border-bottom: 1px solid #e0e0e0;
  padding: 30px 0;
}

.company-section {
  padding: 30px 0 0 0;
}

.partner-full-img {
  max-width: 100%;
  width: auto;
  height: auto;
  display: block;
  margin: 0 auto;
}

.section-title-cn {
  font-size: 1.8rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 12px;
  text-align: left;
  padding-left: 16px;
  border-left: 4px solid #044f9f;
  line-height: 1.3;
}
.section-divider {
  width: 60px;
  height: 3px;
  background: #044f9f;
  margin-left: 16px;
  margin-bottom: 30px;
}

@media (max-width: 768px) {
  .honors-title-cn { font-size: 1.6rem; }
  .honors-title-en { font-size: 0.85rem; letter-spacing: 0.2em; }
  .honors-cert { width: 200px; height: auto; }
  .honors-stats-grid { gap: 24px; }
  .honors-stat-item { width: calc(50% - 12px); }
  .honors-stat-number { font-size: 2rem; }
  .honors-stat-unit { font-size: 1.2rem; }
  .honors-stat-label { font-size: 0.9rem; }
}

@media (max-width: 480px) {
  .honors-stats-grid { gap: 16px; }
  .honors-stat-item { width: calc(50% - 8px); }
  .honors-stat-number { font-size: 1.7rem; }
  .honors-stat-unit { font-size: 1rem; }
  .honors-stat-label { font-size: 0.85rem; }
}

/* ═══════ 应用领域区域（参考优势区域样式）════════════════ */
.applications-section {
  padding: 0;
  background-color: #fff;
}

.applications-slider {
  position: relative;
  width: 100%;
}

.application-slide {
  position: relative;
  width: 100%;
  height: 900px;
  overflow: hidden;
  display: none;
}

.application-slide.active {
  display: block;
}

.application-bg {
  width: 100%;
  height: 100%;
}

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

.application-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background-color: rgba(0, 7, 140, 0.5);
  display: flex;
  align-items: center;
  z-index: 2;
}

.application-overlay.animate {
  animation: appSlideIn 0.8s ease forwards;
}

@keyframes appSlideIn {
  from { width: 0; }
  to { width: 50%; }
}

.application-content {
  display: flex;
  flex-direction: column;
  padding: 40px 50px;
  color: #fff;
  opacity: 0;
  transform: translateX(-20px);
  overflow-wrap: break-word;
  position: relative;
  z-index: 3;
}

.application-arrows {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

@media screen and (min-width: 1601px) {
  .application-content {
    padding-left: calc((100vw - 1600px) / 2 + 20px);
  }
}

.application-content.animate {
  animation: appFadeIn 0.5s ease 0.3s forwards;
}

@keyframes appFadeIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.application-title {
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 20px;
}

.application-desc {
  font-size: 20px;
  line-height: 1.8;
  opacity: 0.9;
}

.application-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.7);
  background: transparent;
  color: #fff;
  cursor: pointer;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.application-arrow:hover {
  background-color: transparent;
  border-color: rgba(255,255,255,1);
  border-width: 3px;
}

@media screen and (max-width: 768px) {
  .application-content {
    padding: 30px 20px;
  }

  .application-slide {
    height: 500px;
  }

  .application-title {
    font-size: 22px;
  }

  .application-desc {
    font-size: 17px;
  }
}

@media screen and (max-width: 480px) {
  .application-content {
    padding: 24px 16px;
  }

  .application-title {
    font-size: 18px;
  }

  .application-desc {
    font-size: 15px;
  }

  .application-slide {
    height: 420px;
  }
}

/* ═══════ 新闻动态区域 ═════════════════════════════════════ */
.news-section {
  position: relative;
  width: 100%;
  background-color: #fff;
  padding: 60px 0;
  overflow-x: hidden;
  overflow-y: visible;
}

/* 标题区 */
.news-header-wrap {
  box-sizing: border-box;
}
.news-header {
  margin-bottom: 40px;
}
.news-title-cn {
  font-size: 2.4rem;
  font-weight: 600;
  color: #000;
  margin: 0 0 0px;
  text-align: center;
}
.news-title-en {
  font-size: 1.8rem;
  font-weight: 700;
  color: #d9d9d9;
  text-transform: uppercase;
  margin: 0 0 20px;
  text-align: center;
}
.news-divider {
  width: 100%;
  height: 1px;
  background: #d9d9d9;
  margin: 0 auto;
}

/* 新闻主体 */
.news-body {
  display: flex;
  gap: 0;
  margin-top: 30px;
  height: auto;
  min-height: 480px;
}

/* 新闻标签 */
.news-tabs {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-bottom: 50px;
}
.news-tab {
  padding: 10px 40px;
  border-radius: 25px;
  border: 1px solid #044f9f;
  color: #044f9f;
  text-decoration: none;
  font-size: 15px;
  transition: all 0.3s;
}
.news-tab:hover,
.news-tab.active {
  background: #044f9f;
  color: #fff;
}

/* 左侧图片 */
.news-image {
  flex: 0 0 40%;
  display: flex;
  height: auto;
  position: relative;
}
.news-image img {
  width: 100%;
  height: auto;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 4px;
  display: block;
}
.news-image-date {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: #044f9f;
  color: #fff;
  padding: 5px 12px;
  border-radius: 4px;
  font-size: 14px;
}

/* 右侧卡片 */
.news-card-wrapper {
  flex: 0 0 70%;
  margin-left: -10%;
  margin-right: -2%;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  overflow-y: visible;
  padding-top: 80px;
  padding-left: 10px;
  padding-right: 0;
}
.news-card-viewport {
  overflow: visible;
  background: transparent;
  box-shadow: none;
  flex: none;
  width: 100%;
}
.news-card-track {
  display: flex;
  gap: 20px;
  transition: transform 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
  will-change: transform;
  align-items: stretch;
}
.news-card {
  flex: 0 0 calc(40% - 16px);
  max-width: calc(40% - 16px);
  display: flex;
  flex-direction: column;
  background: #fff;
  border: none;
  padding: 40px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
  text-decoration: none;
  color: inherit;
}
.news-card-body {
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 30px;
  flex: 1;
}
.news-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #000;
  line-height: 1.4;
  letter-spacing: 0.05em;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  margin-bottom: 30px;
}
.news-card-desc {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.75;
  letter-spacing: 0.04em;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

/* 卡片箭头按钮 */
.news-card-arrow {
  width: 36px;
  height: 36px;
  border: 1px solid #044f9f;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #044f9f;
  margin-top: 50px;
  margin-left: auto;
  flex-shrink: 0;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.news-card-arrow svg {
  width: 18px;
  height: 18px;
}

.news-card:hover .news-card-arrow {
  background-color: #044f9f;
  color: #fff;
}

/* 切换按钮 */
.news-card-arrows {
  display: flex;
  gap: 20px;
  margin-top: 50px;
  justify-content: center;
  padding-right: 30px;
}
.news-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid #ddd;
  background: #fff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #333;
  transition: all 0.3s;
}
.news-arrow:hover {
  background: #044f9f;
  border-color: #044f9f;
  color: #fff;
}

@media (max-width: 768px) {
  .news-content {
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .news-title-cn {
    font-size: 1.6rem;
  }
  .news-title-en {
    font-size: 0.85rem;
    letter-spacing: 0.2em;
  }
  .news-body {
    flex-direction: column;
    gap: 24px;
  }
  .news-image {
    flex: 0 0 96%;
    max-height: none;
    margin-left: 2%;
  }
  .news-image img {
    max-height: none;
    width: 100%;
    object-fit: cover;
  }
  .news-tabs {
    margin-bottom: 30px;
  }
  .news-card-viewport {
    min-height: 280px;
    overflow: visible;
    padding-top: 10px;
  }
  .news-card {
    flex: 0 0 96%;
    max-width: 96%;
  }
  .news-card-body {
    padding: 18px 20px 20px;
  }
  .news-card-title {
    font-size: 1rem;
  }
  .news-card-desc {
    font-size: 0.9rem;
  }
  .news-mobile-list {
    display: none;
  }
}
.news-mobile-list {
  display: none;
}

@media (max-width: 768px) {
  .news-body,
  .news-image,
  .news-card-wrapper {
    display: none;
  }
  .news-mobile-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 0 2%;
  }
  .news-mobile-item {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
  }
  .news-mobile-img {
    position: relative;
    width: 100%;
  }
  .news-mobile-img img {
    width: 100%;
    height: 180px;
    object-fit: cover;
  }
  .news-mobile-text {
    padding: 12px 0;
  }
  .news-mobile-title {
    font-size: 1rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 8px;
  }
  .news-mobile-desc {
    font-size: 0.85rem;
    color: #666;
    line-height: 1.5;
  }
}

/* ═══════ 页脚 ═══════ */
.footer {
  background: #303942;
  padding: 60px 0 40px;
  color: #fff;
}
.footer-content {
  display: flex;
  gap: 60px;
}
.footer-left {
  flex: 0 0 30%;
}
.footer-right {
  flex: 1;
  display: flex;
  gap: 40px;
}
.footer-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: #fff;
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-contact-row,
.footer-address {
  display: flex;
  gap: 8px;
  font-size: 0.9rem;
  line-height: 1.6;
}
.footer-label {
  color: #999;
  white-space: nowrap;
}
.footer-value {
  color: #ccc;
}
.footer-col {
  flex: 1;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: #ccc;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}
.footer-links a:hover {
  color: #fff;
}
.footer-products {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-products li {
  flex: 0 0 auto;
}
.footer-products a {
  color: #ccc;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}
.footer-products a:hover {
  color: #fff;
}
.footer-qr {
  display: flex;
  gap: 15px;
  margin-top: 45px;
}
.footer-qr-item {
  text-align: center;
}
.footer-qr-item img {
  width: 120px;
  height: 120px;
  background: #fff;
  padding: 8px;
  box-sizing: border-box;
}
.footer-qr-item span {
  display: none;
}

@media (max-width: 768px) {
  .footer-content {
    flex-direction: column;
    gap: 40px;
  }
  .footer-left {
    flex: none;
  }
  .footer-right {
    display: none;
  }
  .footer-col {
    flex: 0 0 calc(50% - 15px);
  }
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 20px;
  margin-top: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  font-size: 0.85rem;
  color: #999;
}
.footer-copyright {
  color: #999;
}
.footer-links-info {
  display: flex;
  gap: 20px;
}
.footer-links-info a {
  color: #999;
  text-decoration: none;
  transition: color 0.3s;
}
.footer-links-info a:hover {
  color: #fff;
}

/* ═══════ 内页通用 ═══════ */
.page-header-banner .video-bg {
  overflow: visible;
}
.page-header-banner .video-bg .intro-banner-img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.page-content {
  max-width: 1600px;
  margin: 0 auto;
  padding: 60px 0;
}
.content-header {
  text-align: left;
  margin-bottom: 40px;
}
.content-title-cn {
  font-size: 2rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 10px;
  text-align: left;
}
.content-title-en {
  font-size: 0.9rem;
  color: #999;
  letter-spacing: 0.2em;
  margin-bottom: 15px;
}
.content-divider {
  width: 60px;
  height: 3px;
  background: #044f9f;
  margin: 0;
}
.intro-divider {
  width: 100%;
  height: 1px;
  background: #e0e0e0;
  margin: 30px 0;
  border: none;
}

.sales-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 32px;
}
.sales-card {
  flex: 1;
  min-width: calc(50% - 10px);
  background: #f5f8fa;
  border: 1px solid #dde4ea;
  border-radius: 8px;
  padding: 20px 24px;
}
.sales-card-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: #1f2d3d;
  margin-bottom: 8px;
}
.sales-card-role {
  font-size: 0.98rem;
  color: #555;
  margin-bottom: 6px;
}
.sales-card-tel {
  font-size: 0.98rem;
  color: #0052a5;
}
@media (max-width: 768px) {
  .sales-cards {
    flex-direction: column;
  }
}
@media (max-width: 480px) {
  .sales-cards {
    flex-direction: row;
  }
  .sales-card {
    flex: 1 1 calc(50% - 10px);
  }
}

.company-intro {
  margin: 0 auto;
}
.intro-text {
  font-size: 1rem;
  line-height: 1.8;
  color: #555;
}
.intro-text p {
  margin-bottom: 20px;
  text-indent: 2em;
}
.intro-text h4 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #333;
  margin: 30px 0 15px;
  text-indent: 0;
}
.intro-text ul {
  margin: 15px 0;
  padding-left: 2em;
}
.intro-text li {
  margin-bottom: 10px;
}
.intro-text strong {
  color: #044f9f;
}

@media (max-width: 768px) {
  .page-banner {
    height: 200px;
  }
  .page-header-banner .video-bg .intro-banner-img {
    height: 200px;
    width: 100%;
    object-fit: cover;
  }
  .content-title-cn {
    font-size: 1.5rem;
  }
  .intro-text {
    font-size: 0.95rem;
  }
  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.partners-section {
  padding: 60px 0;
}
.partners-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  width: 100%;
}
.partner-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80px;
  background: #f5f5f5;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
}
.partner-item img {
  max-width: 100%;
  max-height: 50px;
  object-fit: contain;
  opacity: 0.8;
  transition: opacity 0.2s;
}
.partner-item:hover img {
  opacity: 1;
}
.partners-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}

/* 联系我们页 */
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  border-bottom: 1px dashed #e0e0e0;
  padding-bottom: 12px;
}
.contact-label {
  flex-shrink: 0;
  width: 80px;
  font-weight: 700;
  color: #044f9f;
}
.contact-value {
  color: #333;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #d8d8d8;
  border-radius: 6px;
  font-size: 1rem;
  background: #fafafa;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #044f9f;
  box-shadow: 0 0 0 3px rgba(4, 79, 159, 0.08);
  background: #fff;
}
.submit-btn {
  align-self: flex-start;
  padding: 12px 28px;
  background: #044f9f;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}
.submit-btn:hover {
  background: #033a7a;
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  .cert-gallery {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 12px !important;
  }
}
.cert-gallery {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  width: 100%;
}
.cert-item {
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  overflow: hidden;
  background: #f7f7f7;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}
.cert-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.08);
}
.cert-item a {
  display: block;
  padding: 12px;
  background: #fff;
}
.cert-item img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}
.cert-name {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: center;
  padding: 10px 6px;
  font-size: 0.9rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.6);
}

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 36px;
}
.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border: 1px solid #d8d8d8;
  border-radius: 6px;
  color: #333;
  text-decoration: none;
  font-size: 0.95rem;
  background: #fff;
  transition: all 0.2s;
}
.page-link.active,
.page-link:hover {
  background: #044f9f;
  color: #fff;
  border-color: #044f9f;
}

@media (max-width: 768px) {
  .article-item {
    width: 100% !important;
  }
  .article-item-inner {
    flex-direction: column !important;
    width: 100% !important;
  }
  .article-thumb {
    width: 100% !important;
    min-height: auto !important;
    height: 180px !important;
  }
  .article-thumb img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
  }
  .article-info {
    width: 100% !important;
    padding: 16px !important;
  }
  .article-detail {
    padding: 10px !important;
  }
  .article-detail-title {
    font-size: 1.2rem !important;
  }
}

.page-content.no-gap {
  padding-top: 40px;
}

/* 面包屑导航 */
.breadcrumb {
  height: 70px;
  line-height: 70px;
  padding: 0 0;
  margin-bottom: 0;
  font-size: 0.9rem;
  color: #999;
  border-bottom: 1px solid #e8e8e8;
}
.breadcrumb a {
  color: #666;
  text-decoration: none;
}
.breadcrumb a:hover {
  color: #044f9f;
}
.breadcrumb-sep {
  margin: 0 8px;
}
.breadcrumb-current {
  color: #044f9f;
}

/* 文章列表 */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.article-item {
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  transition: transform 0.2s, box-shadow 0.2s;
}
.article-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}
.article-item-inner {
  display: flex;
  text-decoration: none;
  color: inherit;
}
.article-thumb {
  width: 220px;
  min-height: 160px;
  flex-shrink: 0;
}
.article-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.article-info {
  flex: 1;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.article-title {
  font-size: 1.15rem;
  font-weight: bold;
  color: #222;
  margin: 0 0 10px;
  line-height: 1.4;
}
.article-summary {
  font-size: 0.9rem;
  color: #666;
  margin: 0 0 12px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-meta {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: #999;
}
.article-tag {
  color: #044f9f;
}

/* 文章详情 */
.article-detail {
  background: #fff;
  border-radius: 8px;
  padding: 40px 48px;
  border: 1px solid #e8e8e8;
}
.article-detail-header {
  border-bottom: 1px solid #eee;
  padding-bottom: 20px;
  margin-bottom: 24px;
}
.article-detail-title {
  font-size: 1.5rem;
  font-weight: bold;
  color: #222;
  margin: 0 0 12px;
  line-height: 1.4;
}
.article-detail-meta {
  display: flex;
  gap: 20px;
  font-size: 0.9rem;
  color: #999;
}
.article-detail-body {
  font-size: 1rem;
  color: #444;
  line-height: 2;
}
.article-detail-body img {
  display: block;
  margin: 16px auto;
  max-width: 100%;
}
.article-detail-body p {
  margin: 0 0 16px;
  text-indent: 2em;
}
.article-detail-footer {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid #eee;
}
.article-back {
  color: #044f9f;
  text-decoration: none;
  font-size: 0.95rem;
}
.article-back:hover {
  text-decoration: underline;
}

/* 图片放大层 */
.img-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 9999;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  cursor: zoom-out;
}
.img-lightbox.show {
  display: flex;
}
.lightbox-name {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 16px;
  text-align: center;
}
.lightbox-img-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox-img-wrap img {
  max-width: 90vw;
  max-height: 75vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}
.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  color: #fff;
  font-size: 1.4rem;
  line-height: 44px;
  text-align: center;
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
}
.lightbox-prev { left: -60px; }
.lightbox-next { right: -60px; }
.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255,255,255,0.3);
}

/* ═══════ 产品列表页（独立，不与首页冲突） ═══════ */
.product-list-section {
  padding-top: 40px;
  padding-bottom: 60px;
  background: #fff;
}
.product-layout {
  display: flex;
  gap: 30px;
  align-items: flex-start;
}
.product-sidebar {
  flex: 0 0 240px;
  background: #f7f8fa;
  border-radius: 8px;
  padding: 20px 0;
  position: sticky;
  top: 100px;
}
.product-sidebar-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #044f9f;
  padding: 0 20px 14px;
  border-bottom: 1px solid #e8e8e8;
  margin-bottom: 8px;
}
.product-tree {
  list-style: none;
  padding: 0;
  margin: 0;
}
.product-tree-item {
  margin: 0;
}
.product-tree-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 8px;
}
.product-tree-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  font-size: 0.85rem;
  color: #666;
  cursor: pointer;
  user-select: none;
  flex-shrink: 0;
}
.product-tree-link {
  flex: 1;
  display: block;
  padding: 10px 12px;
  color: #044f9f;
  text-decoration: none;
  font-size: 0.95rem;
  border-radius: 4px;
  background: #eef3fc;
  transition: background 0.2s, color 0.2s;
}
.product-tree-item.active > .product-tree-head .product-tree-link {
  font-weight: 600;
}
.product-tree-sub {
  list-style: none;
  padding: 6px 0;
  margin: 4px 10px 6px 14px;
  display: none;
  background: #f5f8fd;
  border: 1px solid #e3ecf7;
  border-radius: 6px;
}
.product-tree-item.expanded > .product-tree-sub {
  display: block;
}
.product-tree-sub li + li {
  border-top: 1px dashed #e3ecf7;
}
.product-tree-sub li a {
  display: block;
  padding: 7px 10px;
  color: #555;
  text-decoration: none;
  font-size: 0.88rem;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}
.product-tree-sub li a:hover {
  background: #e6effd;
  color: #044f9f;
}
.product-main {
  flex: 1;
  min-width: 0;
}
.product-main .content-header {
  margin-bottom: 24px;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.product-card {
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  transition: transform 0.2s, box-shadow 0.2s;
}
.product-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}
.product-card-link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  height: 100%;
}
.product-card-img {
  width: 100%;
  height: 180px;
  overflow: hidden;
  background: #f7f8fa;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-card-info {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #222;
  margin: 0 0 8px;
}
.product-card-desc {
  font-size: 0.9rem;
  color: #666;
  line-height: 1.6;
  flex: 1;
  margin: 0 0 12px;
}
.product-card-more {
  color: #044f9f;
  font-size: 0.9rem;
  font-weight: 600;
}

/* 产品详情页 */
.product-detail-section {
  padding-top: 40px;
  padding-bottom: 60px;
  background: #fff;
}
.product-detail-layout {
  display: flex;
  gap: 30px;
  align-items: flex-start;
}
.product-sidebar {
  flex: 0 0 220px;
  background: #f7f8fa;
  border-radius: 8px;
  padding: 20px 0;
  position: sticky;
  top: 100px;
}
.product-main {
  flex: 1;
  min-width: 0;
}
.product-detail-card {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 24px;
  display: flex;
  gap: 30px;
  margin-bottom: 24px;
}
.product-detail-gallery {
  flex: 0 0 420px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.product-detail-main-img {
  width: 100%;
  height: 360px;
  border-radius: 6px;
  overflow: hidden;
  background: #f7f8fa;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #e8e8e8;
}
.product-detail-main-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.product-detail-thumbs {
  display: flex;
  gap: 10px;
}
.thumb-item {
  width: 80px;
  height: 80px;
  border-radius: 4px;
  overflow: hidden;
  border: 2px solid #e8e8e8;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f7f8fa;
  transition: border-color 0.2s;
}
.thumb-item.active {
  border-color: #044f9f;
}
.thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-detail-info {
  flex: 1;
  min-width: 0;
}
.product-detail-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #222;
  margin: 0 0 16px;
}
.product-detail-meta {
  display: flex;
  gap: 20px;
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 16px;
}
.product-detail-desc {
  font-size: 0.95rem;
  color: #444;
  line-height: 1.8;
  margin-bottom: 20px;
}
.product-detail-desc p {
  margin: 0 0 10px;
}
.product-detail-params h3 {
  font-size: 1rem;
  color: #333;
  margin: 0 0 10px;
}
.params-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.params-table td {
  padding: 8px 12px;
  border: 1px solid #e8e8e8;
  background: #fbfbfb;
}
.params-table tr:nth-child(even) td {
  background: #f7f8fa;
}
.product-detail-contact {
  display: inline-block;
  margin-top: 18px;
  padding: 10px 24px;
  background: #044f9f;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  font-size: 0.95rem;
  transition: background 0.2s;
}
.product-detail-contact:hover {
  background: #033a7a;
}

/* 产品详情页 Tabs */
.product-detail-tabs {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  overflow: hidden;
}
.tab-buttons {
  display: flex;
  border-bottom: 1px solid #e8e8e8;
  background: #f7f8fa;
}
.tab-btn {
  padding: 14px 28px;
  background: transparent;
  border: none;
  font-size: 0.95rem;
  color: #666;
  cursor: pointer;
  border-right: 1px solid #e8e8e8;
  transition: background 0.2s, color 0.2s;
}
.tab-btn:last-child {
  border-right: none;
}
.tab-btn.active {
  background: #fff;
  color: #044f9f;
  font-weight: 600;
  border-bottom: 2px solid #044f9f;
}
.tab-content {
  display: none;
  padding: 24px;
}
.tab-content.active {
  display: block;
}
.tab-content p {
  margin: 0 0 12px;
  color: #444;
  line-height: 1.8;
}
.params-table-full {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.params-table-full th,
.params-table-full td {
  padding: 10px 14px;
  border: 1px solid #e8e8e8;
  text-align: center;
}
.params-table-full th {
  background: #f0f4fc;
  color: #044f9f;
  font-weight: 600;
}
.params-table-full tr:nth-child(even) td {
  background: #fbfbfb;
}

@media (max-width: 768px) {
  .product-layout,
  .product-detail-layout {
    flex-direction: column;
  }
  .product-sidebar {
    position: static;
    width: 100%;
    flex: none;
  }
  .product-sub-menu {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 0 12px;
  }
  .product-sub-menu li a {
    padding: 8px 12px;
    border-radius: 4px;
    border-right: none;
    border-bottom: none;
    background: #fff;
    border: 1px solid #e8e8e8;
    font-size: 0.85rem;
  }
  .product-sub-menu li.active a,
  .product-sub-menu li a:hover {
    border-color: #044f9f;
    background: #eef3fc;
  }
  .product-grid {
    grid-template-columns: 1fr;
  }
  .product-detail-card {
    flex-direction: column;
  }
  .product-detail-gallery {
    flex: none;
    width: 100%;
  }
  .product-detail-main-img {
    height: 240px;
  }
  .product-detail-thumbs {
    justify-content: center;
  }
}

/* ===== product.html 独立产品页样式 ===== */
.product-page-section {
  padding: 0 0 60px;
}

/* 分类卡片区 */
.product-category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-category-card {
  border: 1px solid #e6e8eb;
  border-radius: 6px;
  padding: 28px 22px;
  background: #fff;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.product-category-card:hover {
  border-color: #044f9f;
  box-shadow: 0 6px 18px rgba(4, 79, 159, 0.1);
}

.product-category-name {
  font-size: 20px;
  color: #1f2d3d;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed #ddd;
  letter-spacing: 1px;
}

.product-category-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.product-category-list li a {
  color: #555;
  font-size: 15px;
  text-decoration: none;
  padding: 7px 10px;
  display: block;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}

.product-category-list li a:hover {
  background: #eef3fb;
  color: #044f9f;
}

@media (max-width: 900px) {
  .product-category-grid {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }
}

@media (max-width: 560px) {
  .product-category-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .product-category-card {
    padding: 20px 16px;
  }
}

/* ===== product/list.html 横向列表样式 ===== */
.product-list-layout {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.product-list-item {
  display: flex;
  align-items: stretch;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
  text-decoration: none;
  color: inherit;
}
.product-list-item:hover {
  box-shadow: 0 6px 16px rgba(4, 79, 159, 0.1);
  transform: translateY(-2px);
}
.product-list-img {
  width: 220px;
  flex: 0 0 220px;
  overflow: hidden;
  background: #f7f8fa;
}
.product-list-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.product-list-info {
  flex: 1;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.product-list-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #1f2d3d;
  margin: 0 0 8px;
}
.product-list-desc {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  margin: 0 0 14px;
}
.product-list-btn {
  align-self: flex-start;
  display: inline-block;
  padding: 8px 16px;
  background: #044f9f;
  color: #fff;
  font-size: 0.9rem;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.2s;
}
.product-list-btn:hover {
  background: #033d82;
}
@media (max-width: 768px) {
  .product-list-item {
    flex-direction: column;
  }
  .product-list-img {
    width: 100%;
    flex: 0 0 auto;
    height: 180px;
  }
}

/* ===== details.html 单列详情页 ===== */
.detail-full-section {
  padding: 40px 0 60px;
}
.detail-full-section .content-header {
  margin-bottom: 28px;
}

/* 左图右文产品简介 */
.detail-intro {
  display: flex;
  align-items: stretch;
  gap: 0;
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  margin-bottom: 24px;
  overflow: hidden;
}
.detail-intro-img {
  flex: 0 0 50%;
  max-width: 50%;
}
.detail-intro-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.detail-intro-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 40px 40px 36px;
  gap: 12px;
}
.detail-intro-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: #1f2d3d;
  margin: 0 0 6px;
}
.detail-intro-text p {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.8;
  margin: 0;
}
.detail-intro-btn {
  display: inline-block;
  margin-top: 8px;
  padding: 10px 28px;
  background: #0052a5;
  color: #fff;
  border-radius: 4px;
  font-size: 0.95rem;
  text-align: center;
  transition: background 0.3s;
  align-self: flex-start;
}
.detail-intro-btn:hover {
  background: #003d7a;
}

@media (max-width: 768px) {
  .detail-intro {
    display: block;
  }
  .detail-intro-img {
    flex: none;
    max-width: 100%;
  }
  .detail-intro-img img {
    height: auto;
  }
  .detail-intro-text {
    display: none;
  }
}

.detail-block {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 28px;
  margin-bottom: 24px;
}
.detail-block-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #1f2d3d;
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid #e8e8e8;
}

.detail-block p {
  font-size: 0.95rem;
  color: #444;
  line-height: 1.8;
  margin: 0 0 12px;
}
.detail-block table {
  width: 100%;
  margin-left: 2em;
}
@media (max-width: 480px) {
  .detail-block table {
    margin-left: 0;
    display: block;
    overflow-x: auto;
  }
}
.detail-relates {
  margin-bottom: 22px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 14px;
}
.detail-relate-item {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 999px;
  background: #f0f4fa;
  color: #044f9f;
  text-decoration: none;
  font-size: 1rem;
}
.detail-relate-item:hover,
.detail-relate-item.active {
  background: #044f9f;
  color: #fff;
}