/* ===== 基础重置与变量 ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #1a5fb4;
  --primary-dark: #0d3d7a;
  --primary-light: #3498db;
  --text: #333333;
  --text-light: #666666;
  --text-muted: #999999;
  --text-sub: #94a1b9;
  --bg: #ffffff;
  --bg-light: #f5f7fa;
  --border: #e0e0e0;
  --container: 1200px;
  --font: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --transition: 0.3s ease;
}

html {
  font-size: 17px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

img {
  max-width: 100%;
  height: auto;
  /*display: block;*/
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 顶部灰色条 ===== */
.top-bar {
  background: #f8f9fa;
  font-size: 14px;
  color: #666;
  height: 36px;
  line-height: 36px;
}

.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.top-bar-links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.top-bar-links a {
  color: #666;
  transition: color var(--transition);
}

.top-bar-links a:hover {
  color: var(--primary);
}

/* ===== 顶栏：企业名 + 咨询电话 ===== */
.header {
  background: var(--bg);
  border-bottom: 1px solid #eee;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 86px;
  gap: 24px;
}

.logo {
  font-size: 30px;
  font-weight: 700;
  color: #10468c;
  line-height: 1.7;
  flex-shrink: 1;
  -webkit-box-reflect: below -.7em -webkit-linear-gradient(top, transparent, transparent 50%, rgba(0, 0, 0, .2));
}

.header-phone {
  display: flex;
  align-items: baseline;
  gap: 4px;
  flex-shrink: 0;
  white-space: nowrap;
  transition: opacity var(--transition);
}

.header-phone:hover {
  opacity: 0.85;
}

.header-phone-label {
  font-size: 14px;
  color: #666;
  font-weight: 400;
}

.header-phone-number {
  font-size: 20px;
  font-weight: 700;
  color: #10468c;
  letter-spacing: 0.5px;
}

/* ===== 蓝色通栏导航 ===== */
.nav-bar {
  background: var(--primary);
}

.nav-bar .container {
  position: relative;
  height: 50px;
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 14px;
  height: 50px;
  margin-left: 10px;
}

.nav-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 26px;
  height: 50px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.88);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}

.nav-links a:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.nav-links a.active {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-weight: 700;
}

.nav-bar-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 15px;
  padding: 12px 0;
  cursor: pointer;
  width: 100%;
  text-align: left;
}

/* ===== Banner ===== */
.banner {
  width: 100%;
  height: 400px;
  background-size: cover;
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner strong {
  color: var(--primary);
  font-size: 46px;
}

.page-banner {
  background: #f6f8fb;
  padding: 28px 0;
}

.page-banner-inner {
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-banner-left {
  flex: none;
  width: 100%;
  text-align: center;
}

.banner-back {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 10px;
}

.banner-back:hover {
  opacity: 0.85;
}

.page-banner-left h1 {
  font-size: 30px;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 10px;
}

.page-banner-left p {
  font-size: 16px;
  color: var(--text-sub);
}

.category-strip {
  background: #fff;
  padding: 20px 0 12px;
}

.category-strip .category-pills {
  justify-content: center;
}

.section-products-page {
  background: #fff;
}

.products-page .section {
  padding: 20px 0;
}

.news-page .section {
  padding: 20px 0;
}

.questions-list-page .section {
  padding: 30px 0;
}

.news-page .category-strip .category-pills {
  justify-content: flex-start;
}

.page-banner-right {
  flex-shrink: 0;
}

.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.cat-pill {
  padding: 8px 22px;
  font-size: 14px;
  color: #666;
  background: #fff;
  border: 1px solid #e8ecf0;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}

.cat-pill:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.cat-pill.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(26, 95, 180, 0.22);
}

/* ===== 通用区块 ===== */
.section {
  padding: 50px 0;
}

.section-news {
  background: var(--bg);
}

.section-products {
  background: var(--bg-light);
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-sub);
}

/* ===== 最新动态 ===== */
.news-featured-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.news-feature-card {
  display: block;
  overflow: hidden;
  background: #fff;
  border: 1px solid #eaecef;
  border-radius: 8px;
  padding: 28px 32px;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.news-feature-card:hover {
  border-color: #c5d9f0;
  box-shadow: 0 4px 20px rgba(26, 95, 180, 0.08);
}

.tag-cat {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 12px;
}

.news-feature-card .tag-cat {
  background: rgba(26, 95, 180, 0.1);
  padding: 5px 14px;
  border-radius: 2px;
  margin-bottom: 14px;
}

.news-feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 12px;
  transition: color var(--transition);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-feature-card:hover h3 {
  color: var(--primary);
}

.news-feature-card p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-feature-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid #f0f0f0;
}

.news-feature-foot time {
  font-size: 14px;
  color: var(--text-muted);
}

.news-link {
  font-size: 14px;
  color: var(--primary);
}

.news-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 48px;
  background: #fff;
  border: 1px solid #eaecef;
  border-radius: 8px;
  padding: 8px 32px;
}

.news-dot-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-width: 0;
  padding: 16px 0;
  border-bottom: 1px solid #f0f0f0;
}

.news-panel-col .news-dot-item:last-child {
  border-bottom: none;
}

.news-panel>.news-dot-item:nth-last-child(-n+2) {
  border-bottom: none;
}

.news-dot-item .dot-title {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 15px;
  color: var(--text);
  transition: color var(--transition);
}

.news-dot-item .dot-title-text {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-dot-item .dot-title::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

.news-dot-item:hover .dot-title {
  color: var(--primary);
}

.news-dot-item time {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--text-muted);
}

.news-more {
  text-align: center;
  margin-top: 32px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  padding: 10px 28px;
  background: var(--primary);
  color: #fff;
  border-radius: 4px;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
}

.btn:hover {
  background: var(--primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

/* ===== 产品卡片 ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.product-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 0;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.product-card:hover {
  box-shadow: 0 6px 20px rgba(26, 95, 180, 0.12);
  transform: translateY(-4px);
}

.product-card .img-wrap {
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.product-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.product-card:hover img {
  transform: scale(1.05);
}

.product-info {
  padding: 16px;
  text-align: center;
}

.product-info h3 {
  font-size: 17px;
  margin-bottom: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.product-info p {
  font-size: 15px;
  color: var(--text-muted);
}

.product-card-page {
  display: flex;
  flex-direction: column;
}

.product-card-page .product-info {
  text-align: left;
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-page .product-title-link {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

.product-card-page .product-title-link:hover {
  color: var(--primary);
  text-decoration: underline;
}

.product-card-page .product-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin: 10px 0 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-page .btn-sm {
  align-self: flex-start;
}

/* ===== 分类（旧 tab 已弃用，保留兼容） ===== */
.category-bar {
  display: none;
}

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  justify-content: flex-start;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 48px 0 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

@media (min-width: 1024px) {
  .footer-summary {
    max-width: 400px;
  }
}

.footer h3 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 16px;
  font-weight: 600;
}

.footer p,
.footer li {
  font-size: 14px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.75);
}

.footer-simple {
  padding: 0;
}

.footer-contact li {
  display: flex;
  gap: 8px;
}

.footer-contact .label {
  flex-shrink: 0;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom {
  text-align: center;
  padding: 20px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a:hover {
  color: #fff;
}

/* ===== 内页 Hero ===== */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  padding: 48px 0;
  text-align: center;
  color: #fff;
}

.page-hero h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-hero p {
  font-size: 16px;
  opacity: 0.85;
}

.section-grey {
  background: var(--bg-light);
}

/* ===== 关于我们 ===== */
.about-intro {
  max-width: 920px;
  min-height: 400px;
  margin: 0 auto;
}

.about-intro-stack {
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto 40px;
}

.about-text h2 {
  font-size: 26px;
  color: var(--primary-dark);
  margin-bottom: 20px;
}

.about-text p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 16px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  object-fit: cover;
}

.about-intro-stack .about-figure img {
  max-height: 400px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--bg-light);
  border-radius: 8px;
}

.stat-item strong {
  display: block;
  font-size: 32px;
  color: var(--primary);
  margin-bottom: 6px;
}

.stat-item span {
  font-size: 14px;
  color: var(--text-light);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px 28px;
  text-align: center;
}

.value-card h3 {
  font-size: 18px;
  color: var(--primary-dark);
  margin-bottom: 14px;
}

.value-card p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
}

.timeline {
  max-width: 700px;
  margin: 0 auto;
}

.timeline-item {
  display: flex;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.timeline-item .year {
  flex-shrink: 0;
  width: 60px;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

.timeline-item p {
  font-size: 16px;
  color: var(--text-light);
}

/* ===== 新闻列表页 ===== */
.news-page-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}

.news-list-card {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}

.news-card-thumb {
  flex-shrink: 0;
  width: 220px;
  height: 140px;
  border-radius: 6px;
  overflow: hidden;
  background: #f0f0f0;
}

.news-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-card-body {
  flex: 1;
  min-width: 0;
}

.news-list-card:first-child {
  padding-top: 0;
}

.news-list-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
  transition: color var(--transition);
}

.news-list-card:hover h3 {
  color: var(--primary);
}

.news-list-card .news-excerpt {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-list-card .news-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
  color: var(--text-muted);
}

.news-meta-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.news-list-card .news-meta-row .tag-cat {
  margin-bottom: 0;
}

.news-more-link {
  flex-shrink: 0;
  font-size: 13px;
  color: var(--primary);
  padding: 6px 16px;
  border: 1px solid var(--primary);
  border-radius: 4px;
  background: #fff;
  transition: all var(--transition);
}

.news-list-card:hover .news-more-link {
  background: var(--primary);
  color: #fff;
}

/* ===== 问题地图 ===== */
.questions-hero {
  background: #f6f8fb;
  padding: 40px 0 36px;
}

.questions-hero h1 {
  font-size: 30px;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 0;
  position: relative;
  display: inline-block;
  padding-bottom: 10px;
}

.questions-hero h1::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}

.questions-hero p {
  font-size: 15px;
  color: var(--text-sub);
  margin-top: 16px;
}

.section-questions {
  padding: 0;
}

.questions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  padding: 40px 0 50px;
}

.question-category-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.question-category-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: #eef4fb;
  border-bottom: 1px solid #dce8f5;
}

.question-category-head h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

.question-category-head a {
  font-size: 13px;
  color: var(--primary);
  transition: opacity var(--transition);
}

.question-category-head a:hover {
  opacity: 0.8;
}

.question-category-list {
  list-style: none;
}

.question-category-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid #f0f2f5;
  transition: background var(--transition);
}

.question-category-item:last-child {
  border-bottom: none;
}

.question-category-item:hover {
  background: #f8fafc;
}

.question-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
  width: 24px;
}

.question-category-item a {
  flex: 1;
  font-size: 15px;
  color: var(--text);
  line-height: 1.5;
  transition: color var(--transition);
}

.question-category-item:hover a {
  color: var(--primary);
}

.question-arrow {
  color: #ccc;
  font-size: 14px;
  flex-shrink: 0;
}

.question-list-card {
  display: block;
  padding: 24px 28px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 20px;
  background: #fff;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.question-list-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  border-color: #d8e2ef;
}

.question-list-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 12px;
  transition: color var(--transition);
}

.question-list-card:hover h3 {
  color: var(--primary);
}

.question-excerpt {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
}

.question-list-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  gap: 16px;
}

.question-tag {
  font-size: 12px;
  padding: 4px 10px;
  background: #e8f0fa;
  color: var(--primary);
  border-radius: 3px;
}

.question-more-link {
  flex-shrink: 0;
  font-size: 13px;
  color: var(--primary);
  padding: 6px 16px;
  border: 1px solid var(--primary);
  border-radius: 4px;
  background: #fff;
  transition: all var(--transition);
}

.question-list-card:hover .question-more-link {
  background: var(--primary);
  color: #fff;
}

/* ===== 侧边栏 ===== */
.sidebar {
  position: sticky;
  top: 20px;
}

.sidebar-block {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-block h4 {
  display: block;
  font-size: 16px;
  color: var(--text);
  font-weight: 600;
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: none;
}

.sidebar-block h4::after {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  margin-top: 10px;
  margin-bottom: 12px;
  background: linear-gradient(to right, var(--primary) 50%, #e0e0e0 50%);
}

.sidebar-list.sidebar-dot-list a {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.sidebar-list.sidebar-dot-list a::before {
  content: "";
  flex-shrink: 0;
  width: 5px;
  height: 5px;
  margin-top: 8px;
  background: var(--primary);
  border-radius: 50%;
}

.sidebar-list li {
  padding: 8px 0;
  border-bottom: 1px dashed #eee;
}

.sidebar-list li:last-child {
  border-bottom: none;
}

.sidebar-list a {
  font-size: 14px;
  color: var(--text-light);
  display: block;
  line-height: 1.5;
  transition: color var(--transition);
}

.sidebar-list a:hover {
  color: var(--primary);
}

.sidebar-list .hot-num {
  display: inline-block;
  width: 18px;
  height: 18px;
  line-height: 18px;
  text-align: center;
  font-size: 11px;
  background: #f0f0f0;
  color: var(--text-muted);
  border-radius: 3px;
  margin-right: 6px;
}

.sidebar-list li:nth-child(-n+3) .hot-num {
  background: var(--primary);
  color: #fff;
}

.sidebar-contact p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 6px;
}

.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sidebar-tags a {
  padding: 4px 12px;
  font-size: 13px;
  color: var(--text-light);
  background: #f5f7fa;
  border-radius: 3px;
  transition: all var(--transition);
}

.sidebar-tags a:hover {
  background: var(--primary);
  color: #fff;
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.pagination a,
.pagination .page-current {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  font-size: 14px;
  border-radius: 4px;
  color: var(--text-light);
  border: 1px solid var(--border);
}

.pagination .page-current {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.pagination a:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.pagination .page-next {
  border: none;
  color: var(--primary);
}

/* ===== 详情页布局 ===== */
.detail-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}

.breadcrumb-wrap {
  margin-top: 25px;
  background: #fff;
}

.breadcrumb {
  padding: 0;
  font-size: 14px;
  color: var(--text-muted);
  border-bottom: none;
  margin-bottom: 0;
}

.detail-section {
  padding-top: 32px;
}

.breadcrumb a {
  color: var(--text-light);
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb span {
  margin: 0 8px;
  color: #ccc;
}

.detail-main {
  background: #fff;
}

.detail-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 16px;
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: var(--text-muted);
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.article-product-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  margin-bottom: 28px;
  background: #fff;
  border: 1px solid #e8ecf0;
  border-radius: 8px;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.article-product-card:hover {
  border-color: #c5d9f0;
  box-shadow: 0 2px 12px rgba(26, 95, 180, 0.08);
}

.article-product-thumb {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 6px;
  overflow: hidden;
  background: #f5f7fa;
}

.article-product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-product-info {
  flex: 1;
  min-width: 0;
}

.article-product-info h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.article-product-info p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-product-btn {
  flex-shrink: 0;
  padding: 8px 20px;
  font-size: 14px;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 4px;
  background: #fff;
  transition: all var(--transition);
}

.article-product-card:hover .article-product-btn {
  background: var(--primary);
  color: #fff;
}

.detail-cover {
  margin-bottom: 28px;
  border-radius: 8px;
  overflow: hidden;
}

.detail-content {
  font-size: 16px;
  color: var(--text-light);
  line-height: 2;
}

.detail-content p {
  margin-bottom: 16px;
}

.detail-content img {
  max-width: 100%;
  height: auto;
  display: inline-block;
  vertical-align: middle;
}

.detail-content h3 {
  font-size: 18px;
  color: var(--text);
  margin: 28px 0 12px;
  font-weight: 600;
}

.detail-nav {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-top: 40px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.detail-nav-item {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: 8px;
  line-height: 1.6;
}

.detail-nav-next {
  text-align: right;
  margin-left: auto;
}

.detail-nav-item:hover .nav-title {
  color: var(--primary);
}

.detail-nav .nav-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 0;
  flex-shrink: 0;
}

.detail-nav .nav-title {
  font-size: 15px;
  color: var(--text);
  transition: color var(--transition);
}

.detail-recommend {
  margin-top: 40px;
}

.block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.block-head h3 {
  font-size: 20px;
  font-weight: 600;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
}

.more-link {
  font-size: 13px;
  color: var(--primary);
  flex-shrink: 0;
  padding: 6px 16px;
  border: 1px solid var(--primary);
  border-radius: 4px;
  background: #fff;
  transition: all var(--transition);
}

.more-link:hover {
  background: var(--primary);
  color: #fff;
}

.hot-articles-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 40px;
}

.hot-articles-list a {
  font-size: 15px;
  color: var(--text);
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color var(--transition);
}

.hot-articles-list a:hover {
  color: var(--primary);
}

.hot-articles-list a::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  background: var(--primary);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}

/* ===== 联系页 ===== */
.section-contact {
  background: #fff;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 56px;
  align-items: start;
  max-width: 920px;
  margin: 0 auto;
}

.contact-panel-main h2 {
  font-size: 22px;
  color: var(--primary-dark);
  margin-bottom: 28px;
}

.contact-detail-grid {
  display: flex;
  flex-direction: column;
}

.contact-detail-item {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid #f0f2f5;
}

.contact-detail-item:last-child {
  border-bottom: none;
}

.contact-detail-item .contact-detail-label {
  flex: 0 0 88px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 0;
}

.contact-detail-item p {
  font-size: 16px;
  color: var(--text);
  line-height: 1.6;
}

.contact-detail-item a {
  color: var(--primary);
}

.contact-detail-item a:hover {
  text-decoration: underline;
}

.contact-panel-qr {
  padding-left: 56px;
  border-left: 1px solid #e8ecf0;
}

.contact-qr-card {
  text-align: center;
  padding: 8px 4px;
}

.contact-qr-card img {
  display: block;
  margin: 0 auto 16px;
  border-radius: 6px;
  border: 1px solid #e8ecf0;
}

.contact-qr-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.contact-qr-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}

.contact-info h2,
.contact-form-wrap h2 {
  font-size: 22px;
  color: var(--primary-dark);
  margin-bottom: 24px;
}

.contact-list li {
  margin-bottom: 24px;
}

.contact-list strong {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 4px;
  font-weight: 400;
}

.contact-form-wrap {
  background: var(--bg-light);
  border-radius: 8px;
  padding: 32px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 15px;
  font-family: var(--font);
  outline: none;
  background: #fff;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
}

.form-group textarea {
  resize: vertical;
}

.page-cta {
  text-align: center;
  margin-top: 48px;
}

.page-cta p {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 16px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-page-layout,
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
  }

  .hot-articles-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .logo {
    font-size: 22px;
  }

  .header-phone-number {
    font-size: 18px;
  }

  .nav-bar-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    gap: 0;
    padding-bottom: 8px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    padding: 0 16px;
    height: 44px;
    justify-content: flex-start;
  }

  .article-product-card {
    flex-wrap: wrap;
  }

  .article-product-btn {
    width: 100%;
    text-align: center;
  }

  .page-banner-inner {
    flex-direction: column;
    align-items: center;
  }

  .category-strip .category-pills {
    justify-content: center;
  }

  .news-page .category-strip .category-pills {
    justify-content: flex-start;
  }

  .news-list-card {
    flex-direction: column;
  }

  .news-card-thumb {
    width: 100%;
    height: 180px;
  }

  .detail-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .detail-nav-next {
    margin-left: 0;
  }

  .contact-panel {
    gap: 32px;
  }

  .contact-panel-qr {
    padding-left: 0;
    border-left: none;
    padding-top: 24px;
    border-top: 1px solid #e8ecf0;
  }

  .news-featured-row,
  .news-panel,
  .about-intro,
  .about-stats,
  .values-grid,
  .questions-grid,
  .contact-panel,
  .contact-layout,
  .product-grid,
  .product-grid-3 {
    grid-template-columns: 1fr;
  }

  .news-panel {
    padding: 8px 20px;
    gap: 0;
  }

  .section-header h2 {
    font-size: 28px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: 18px;
  }

  .header-phone {
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
  }

  .header-phone-label {
    font-size: 12px;
  }

  .header-phone-number {
    font-size: 16px;
  }

  .contact-detail-item {
    flex-direction: column;
    gap: 6px;
  }

  .contact-detail-item .contact-detail-label {
    flex: none;
  }

  .news-dot-item time {
    display: none;
  }
}