/* =============================================
   健坤工匠官网 - 主样式
   参考楚天科技风格：企业蓝+白底+专业感
   ============================================= */

:root {
  --primary: #0056b3;
  --primary-dark: #003d80;
  --primary-light: #1a73e8;
  --accent: #e8a000;
  --text-dark: #1a1a2e;
  --text-gray: #555;
  --text-light: #888;
  --bg-light: #f7f9fc;
  --bg-white: #fff;
  --border: #e0e6ef;
  --shadow: 0 4px 20px rgba(0,86,179,0.10);
  --shadow-hover: 0 8px 32px rgba(0,86,179,0.18);
  --radius: 8px;
  --transition: 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 20px; }
.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-dark);
  text-align: center;
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 15px;
  color: var(--text-light);
  text-align: center;
  margin-bottom: 48px;
}
.section-divider {
  width: 60px; height: 4px;
  background: var(--primary);
  margin: 16px auto 20px;
  border-radius: 2px;
}

/* ========== 顶部信息栏 ========== */
.top-bar {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  padding: 6px 0;
}
.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.top-bar a { color: rgba(255,255,255,0.85); }
.top-bar a:hover { color: #fff; }
.top-bar-right { display: flex; gap: 20px; }
.top-bar-left { display: flex; align-items: center; gap: 16px; }
.top-bar-left i { margin-right: 4px; }

/* ========== 主导航 ========== */
.navbar {
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: 0 4px 20px rgba(0,86,179,0.15); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  display: flex;
  align-items: center;
}
.nav-logo .logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
}

.nav-menu { display: flex; align-items: center; gap: 0; }
.nav-item {
  position: relative;
}
.nav-link {
  display: block;
  padding: 0 22px;
  line-height: 70px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dark);
  transition: color var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 22px; right: 22px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px 2px 0 0;
}

.nav-dropdown {
  position: absolute;
  top: 70px; left: 0;
  background: #fff;
  min-width: 160px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
  border-radius: 0 0 8px 8px;
  border-top: 3px solid var(--primary);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  z-index: 100;
}
.nav-item:hover .nav-dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--text-gray);
  border-bottom: 1px solid var(--border);
}
.nav-dropdown a:last-child { border-bottom: none; }
.nav-dropdown a:hover { background: var(--bg-light); color: var(--primary); }

.nav-phone {
  display: flex; align-items: center; gap: 8px;
  background: var(--primary);
  color: #fff;
  padding: 8px 20px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  margin-left: 16px;
}
.nav-phone:hover { background: var(--primary-dark); color: #fff; }

.nav-hamburger { display: none; cursor: pointer; flex-direction: column; gap: 5px; }
.nav-hamburger span { width: 24px; height: 2px; background: var(--text-dark); border-radius: 2px; transition: var(--transition); }

/* ========== 首页 Banner 轮播 ========== */
.hero-slider {
  position: relative;
  height: 580px;
  overflow: hidden;
  background: #003366;
}
.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
  display: flex; align-items: center;
}
.slide.active { opacity: 1; }
.slide-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
}
.slide-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(0,40,90,0.75) 0%, rgba(0,40,90,0.3) 60%, transparent 100%);
}
.slide-content {
  position: relative; z-index: 2;
  max-width: 1240px; margin: 0 auto; padding: 0 20px;
  color: #fff;
}
.slide-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 1px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.slide-title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}
.slide-subtitle {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 520px;
}
.slide-btns { display: flex; gap: 16px; }
.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 14px 32px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid var(--primary);
  cursor: pointer;
  transition: var(--transition);
  display: inline-block;
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-outline {
  background: transparent;
  color: #fff;
  padding: 14px 32px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid rgba(255,255,255,0.7);
  cursor: pointer;
  transition: var(--transition);
  display: inline-block;
}
.btn-outline:hover { background: rgba(255,255,255,0.15); }

.slider-dots {
  position: absolute;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  display: flex; gap: 8px; z-index: 5;
}
.slider-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: var(--transition);
}
.slider-dot.active { background: #fff; width: 24px; border-radius: 4px; }

.slider-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px;
  background: rgba(255,255,255,0.15);
  border: 2px solid rgba(255,255,255,0.5);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  z-index: 5;
  font-size: 18px;
  transition: var(--transition);
}
.slider-arrow:hover { background: var(--primary); border-color: var(--primary); }
.slider-arrow.prev { left: 24px; }
.slider-arrow.next { right: 24px; }

/* ========== 核心数据统计 ========== */
.stats-bar {
  background: var(--primary);
  padding: 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat-item {
  padding: 36px 24px;
  text-align: center;
  color: #fff;
  border-right: 1px solid rgba(255,255,255,0.15);
  transition: background var(--transition);
}
.stat-item:last-child { border-right: none; }
.stat-item:hover { background: rgba(255,255,255,0.08); }
.stat-number {
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
  font-family: 'Arial Black', sans-serif;
}
.stat-unit { font-size: 20px; font-weight: 600; }
.stat-label { font-size: 14px; opacity: 0.85; }

/* ========== 公司简介 ========== */
.about-section { padding: 90px 0; background: var(--bg-white); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-left .label {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.about-left h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
}
.about-left p {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.9;
  margin-bottom: 20px;
}
.about-points { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.about-point {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px; color: var(--text-gray);
}
.about-point::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
}
.about-cta { margin-top: 32px; }
.about-right {
  position: relative;
}
.about-img-main {
  width: 100%;
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  display: block;
  background: linear-gradient(135deg, #0056b3 0%, #1a73e8 100%);
  height: 380px;
  object-fit: cover;
}
.about-img-badge {
  position: absolute;
  bottom: -24px; left: -24px;
  background: var(--accent);
  color: #fff;
  padding: 20px 24px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 8px 24px rgba(232,160,0,0.3);
}
.about-img-badge .num { font-size: 40px; font-weight: 800; line-height: 1; }
.about-img-badge .text { font-size: 13px; font-weight: 500; }

/* ========== 产品中心 ========== */
.products-section { padding: 90px 0; background: var(--bg-light); }

.product-tabs {
  display: flex; gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.product-tab {
  padding: 8px 24px;
  border-radius: 24px;
  border: 1.5px solid var(--border);
  background: #fff;
  color: var(--text-gray);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}
.product-tab.active, .product-tab:hover {
  background: var(--primary); color: #fff; border-color: var(--primary);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.product-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: linear-gradient(135deg, #e8f0fe 0%, #c5d8f9 100%);
  display: flex; align-items: center; justify-content: center;
}
.product-card-img .placeholder-icon {
  font-size: 64px;
  color: var(--primary);
  opacity: 0.4;
}
.product-card-body { padding: 20px; }
.product-card-cat {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.product-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-dark);
}
.product-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}
.product-card-link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}
.product-card-link::after { content: '→'; transition: transform var(--transition); }
.product-card:hover .product-card-link::after { transform: translateX(4px); }

.section-more {
  text-align: center;
  margin-top: 40px;
}

/* ========== 核心优势 ========== */
.advantage-section { padding: 90px 0; background: var(--primary-dark); color: #fff; }
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.advantage-item { text-align: center; }
.adv-icon {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 30px;
  transition: var(--transition);
}
.advantage-item:hover .adv-icon { background: var(--primary-light); }
.advantage-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.advantage-item p { font-size: 14px; opacity: 0.8; line-height: 1.7; }

/* ========== 发展历程 ========== */
.history-section { padding: 90px 0; background: var(--bg-white); }
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-top: 20px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
  transform: translateX(-50%);
}
.timeline-item {
  display: flex;
  margin-bottom: 40px;
  position: relative;
}
.timeline-item.right { flex-direction: row-reverse; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: 50%; top: 16px;
  transform: translateX(-50%);
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px var(--primary);
  z-index: 1;
}
.timeline-content {
  width: calc(50% - 40px);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
}
.timeline-item.left .timeline-content { margin-right: auto; }
.timeline-item.right .timeline-content { margin-left: auto; }
.timeline-year {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}
.timeline-content h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.timeline-content p { font-size: 13px; color: var(--text-gray); line-height: 1.7; }

/* ========== 荣誉资质 ========== */
.honors-section { padding: 90px 0; background: var(--bg-light); }
.honors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.honor-item {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  border: 1px solid #eef0f4;
  transition: var(--transition);
  cursor: pointer;
}
.honor-item:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(0,86,179,0.12); border-color: var(--primary-light); }
/* 有图片时的证书展示 */
.honor-img-wrap {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #f7f8fa;
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.honor-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.honor-item:hover .honor-img-wrap img { transform: scale(1.05); }
/* 无图片时的占位图标 */
.honor-icon-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4ff 100%);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px;
  font-size: 40px;
  color: var(--primary);
}
.honor-icon-placeholder span { font-size: 12px; color: var(--text-light); }
/* 卡片底部文字 */
.honor-info {
  padding: 14px 16px;
  border-top: 2px solid transparent;
  transition: border-color 0.3s;
}
.honor-item:hover .honor-info { border-top-color: var(--primary); }
.honor-info h4 { font-size: 13px; font-weight: 700; color: var(--text-dark); line-height: 1.5; margin-bottom: 4px; }
.honor-info span { font-size: 12px; color: var(--primary); font-weight: 600; }
/* 证书灯箱 */
.honor-lightbox {
  display: none; position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,0.85);
  align-items: center; justify-content: center;
}
.honor-lightbox.active { display: flex; }
.honor-lightbox img {
  max-width: 90vw; max-height: 88vh;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.honor-lightbox-close {
  position: absolute; top: 20px; right: 24px;
  color: #fff; font-size: 36px; cursor: pointer;
  line-height: 1; opacity: 0.8;
  transition: opacity 0.2s;
}
.honor-lightbox-close:hover { opacity: 1; }

/* ========== 新闻中心 ========== */
.news-section { padding: 90px 0; background: var(--bg-white); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.news-card-img {
  width: 100%; height: 180px;
  background: linear-gradient(135deg, #eaf0fb 0%, #d0e3fb 100%);
  object-fit: cover;
  display: flex; align-items: center; justify-content: center;
}
.news-card-img .news-ph-icon { font-size: 48px; color: var(--primary); opacity: 0.3; }
.news-card-body { padding: 20px; }
.news-cat {
  display: inline-block;
  background: var(--bg-light);
  color: var(--primary);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
  margin-bottom: 10px;
}
.news-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 10px; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card p { font-size: 13px; color: var(--text-light); line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-meta { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; font-size: 12px; color: var(--text-light); }
.news-more { color: var(--primary); font-weight: 600; }

/* ========== 联系/在线咨询 ========== */
.contact-section { padding: 90px 0; background: var(--bg-light); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: start; }
.contact-info { }
.contact-info h2 { font-size: 30px; font-weight: 800; margin-bottom: 24px; }
.contact-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-item-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.contact-item h4 { font-size: 13px; color: var(--text-light); margin-bottom: 4px; }
.contact-item p { font-size: 15px; font-weight: 600; }

.contact-form {
  background: #fff;
  border-radius: 12px;
  padding: 36px;
  box-shadow: var(--shadow);
}
.contact-form h3 { font-size: 20px; font-weight: 700; margin-bottom: 24px; color: var(--primary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-gray); margin-bottom: 6px; }
.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  color: var(--text-dark);
  transition: var(--transition);
  background: #fafcff;
}
.form-control:focus { outline: none; border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(0,86,179,0.08); }
textarea.form-control { resize: vertical; min-height: 100px; }
.form-submit {
  width: 100%;
  padding: 13px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 8px;
}
.form-submit:hover { background: var(--primary-dark); }
.form-success {
  text-align: center;
  color: #28a745;
  font-weight: 600;
  padding: 20px;
  display: none;
}

/* ========== 页脚 ========== */
footer {
  background: #0d1f3c;
  color: rgba(255,255,255,0.8);
}
.footer-main { padding: 60px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand .logo-img { height: 50px; width: auto; }
.footer-desc { font-size: 13px; line-height: 1.8; opacity: 0.7; margin: 16px 0; max-width: 280px; }
.footer-contacts { margin-top: 20px; }
.footer-contacts p { font-size: 13px; opacity: 0.7; margin-bottom: 8px; }
.footer-contacts strong { color: #fff; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 13px; opacity: 0.7; transition: var(--transition); }
.footer-col ul li a:hover { opacity: 1; color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; opacity: 0.6;
}

/* ========== 悬浮联系按钮 ========== */
.float-btns {
  position: fixed;
  right: 24px; bottom: 80px;
  display: flex; flex-direction: column; gap: 12px;
  z-index: 900;
}
.float-btn {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 16px rgba(0,86,179,0.35);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.float-btn:hover { background: var(--primary-dark); transform: scale(1.1); }
.float-btn.top-btn { background: var(--text-gray); }
.float-btn.top-btn:hover { background: var(--text-dark); }

/* ========== 留言弹窗 ========== */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: var(--transition);
}
.modal-overlay.show { opacity: 1; visibility: visible; }
.modal {
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  width: 90%; max-width: 520px;
  transform: translateY(-20px);
  transition: transform var(--transition);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-overlay.show .modal { transform: translateY(0); }
.modal-close {
  position: absolute; top: 16px; right: 20px;
  font-size: 24px; cursor: pointer;
  color: var(--text-light); background: none; border: none;
  transition: var(--transition);
}
.modal-close:hover { color: var(--text-dark); }
.modal h3 { font-size: 22px; font-weight: 800; margin-bottom: 8px; color: var(--primary); }
.modal .subtitle { font-size: 13px; color: var(--text-light); margin-bottom: 24px; }

/* ========== 内页通用 ========== */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  padding: 60px 0;
  color: #fff;
  text-align: center;
}
.page-hero h1 { font-size: 38px; font-weight: 800; }
.page-hero .breadcrumb { margin-top: 12px; font-size: 13px; opacity: 0.8; }
.page-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
.page-hero .breadcrumb a:hover { color: #fff; }

/* ========== 产品详情页 ========== */
.product-detail { padding: 60px 0; }
.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.product-detail-img {
  width: 100%; height: 360px;
  border-radius: 12px;
  background: linear-gradient(135deg, #e8f0fe 0%, #c5d8f9 100%);
  display: flex; align-items: center; justify-content: center;
  object-fit: cover;
}
.product-detail-info h1 { font-size: 28px; font-weight: 800; margin-bottom: 12px; }
.product-detail-info .cat { color: var(--primary); font-size: 13px; font-weight: 600; margin-bottom: 16px; }
.product-detail-info .desc { font-size: 15px; color: var(--text-gray); line-height: 1.8; margin-bottom: 24px; }
.params-table { width: 100%; border-collapse: collapse; margin-top: 16px; }
.params-table th, .params-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
.params-table th { background: var(--bg-light); font-weight: 700; width: 40%; }
.product-detail-content { padding: 48px 0; }
.product-detail-content h3 { font-size: 22px; font-weight: 700; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--primary); }
.product-detail-content .content-body h3 { font-size: 18px; margin-top: 20px; margin-bottom: 12px; border-bottom: none; padding: 0; color: var(--primary); }
.product-detail-content .content-body p { font-size: 15px; color: var(--text-gray); line-height: 1.9; margin-bottom: 12px; }
.product-detail-content .content-body ul { padding-left: 20px; margin-bottom: 12px; }
.product-detail-content .content-body ul li { font-size: 15px; color: var(--text-gray); line-height: 1.9; }

/* ========== 新闻列表页 ========== */
.news-list-section { padding: 60px 0; }
.news-list-grid { display: grid; grid-template-columns: 1fr 320px; gap: 40px; }
.news-main { }
.news-sidebar { }
.news-list-item {
  display: flex; gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}
.news-list-item:hover .news-list-title { color: var(--primary); }
.news-list-thumb {
  width: 140px; height: 100px; flex-shrink: 0;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #eaf0fb 0%, #d0e3fb 100%);
  object-fit: cover;
  display: flex; align-items: center; justify-content: center;
}
.news-list-body { flex: 1; }
.news-list-title { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.5; transition: var(--transition); }
.news-list-summary { font-size: 13px; color: var(--text-light); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-list-meta { margin-top: 12px; font-size: 12px; color: var(--text-light); display: flex; gap: 16px; }
.sidebar-box { background: var(--bg-light); border-radius: var(--radius); padding: 20px; margin-bottom: 24px; }
.sidebar-box h4 { font-size: 16px; font-weight: 700; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); }
.sidebar-list li { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13px; cursor: pointer; }
.sidebar-list li:hover { color: var(--primary); }
.sidebar-list li:last-child { border-bottom: none; }

/* ========== 分页 ========== */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 40px; }
.page-btn {
  width: 36px; height: 36px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; cursor: pointer;
  background: #fff;
  transition: var(--transition);
}
.page-btn.active, .page-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ========== 响应式 ========== */
@media (max-width: 992px) {
  .about-grid, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .honors-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .about-img-badge { left: 0; bottom: 0; }
  .slide-title { font-size: 34px; }
  .hero-slider { height: 440px; }
  .news-list-grid { grid-template-columns: 1fr; }
  .product-detail-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .top-bar { display: none; }
  .nav-menu { display: none; position: absolute; top: 70px; left: 0; right: 0; background: #fff; flex-direction: column; box-shadow: 0 8px 20px rgba(0,0,0,0.1); }
  .nav-menu.open { display: flex; }
  .nav-link { line-height: 50px; border-bottom: 1px solid var(--border); padding: 0 20px; }
  .nav-link.active::after { display: none; }
  .nav-dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; border-radius: 0; background: var(--bg-light); }
  .nav-hamburger { display: flex; }
  .nav-phone { display: none; }
  .slide-title { font-size: 26px; }
  .slide-subtitle { font-size: 14px; }
  .hero-slider { height: 360px; }
  .product-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .advantage-grid { grid-template-columns: 1fr 1fr; }
  .honors-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 26px; }
  .form-row { grid-template-columns: 1fr; }
  .timeline::before { left: 20px; }
  .timeline-item, .timeline-item.right { flex-direction: column; padding-left: 50px; }
  .timeline-dot { left: 20px; }
  .timeline-content { width: 100%; }
}