:root {
  --primary-color: #0066cc;
  --primary-dark: #0052a3;
  --primary-light: #3385ff;
  --secondary-color: #ff6b35;
  --accent-color: #0099ff;
  --text-dark: #333333;
  --text-gray: #666666;
  --text-light: #999999;
  --text-muted: #bbbbbb;
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-gray: #f0f2f5;
  --border-color: #e5e7eb;
  --border-light: #f0f0f0;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-white);
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 10px 28px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: white;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 32px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary-color));
  border-radius: 2px;
}

.section-title p {
  color: var(--text-gray);
  font-size: 15px;
  margin-top: 16px;
}

.section-more {
  text-align: right;
  margin-top: 30px;
}

.section-more a {
  color: var(--primary-color);
  font-size: 14px;
  transition: all var(--transition-fast);
}

.section-more a:hover {
  letter-spacing: 1px;
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.top-bar {
  background-color: #f5f7fa;
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
  color: var(--text-gray);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 32px;
}

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

.top-bar a {
  color: var(--text-gray);
  transition: color var(--transition-fast);
}

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

.lang-switch a {
  padding: 0 6px;
}

.lang-switch a.active {
  color: var(--primary-color);
}

/* ========== 高端头部设计 ========== */
.header {
  background: #ffffff;
  border-bottom: 1px solid rgba(0, 102, 204, 0.06);
  position: relative;
  z-index: 1001;
}
.header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(0, 102, 204, 0.12) 50%, transparent 100%);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100px;
}

/* === 1. LOGO设计 === */
.logo {
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo img {
  height: 50px;
  width: auto;
}

.logo-ucscan {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  line-height: 1;
}

.logo-emblem {
  position: relative;
  width: 92px;
  height: 46px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0057b8;
}
.logo-emblem svg {
  position: relative;
  z-index: 1;
  width: 92px;
  height: 46px;
  color: #0057b8;
}

.logo-brand {
  display: flex;
  flex-direction: column;
  line-height: 1;
  align-items: stretch;
  min-width: 0;
}
.logo-brand-name {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #0057b8;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  white-space: nowrap;
  text-align: right;
  width: 100%;
}
.logo-brand-name .brand-cn {
  letter-spacing: 3px;
  display: inline-block;
}
.logo-brand-name .brand-en {
  letter-spacing: 0.5px;
  display: inline-block;
}
.logo-brand-name .brand-sep {
  margin: 0 4px;
  color: #1a3a6b;
  font-weight: 400;
  opacity: 0.5;
  display: inline-block;
}
.logo-brand-sub {
  font-size: 11px;
  letter-spacing: 2.02px;
  color: #6b8db5;
  text-transform: uppercase;
  margin-top: 4px;
  font-weight: 500;
  align-self: flex-start;
  text-align: left;
  white-space: nowrap;
}

/* === 2. 公司名称区域 === */
.logo-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 60px;
  gap: 9px;
  padding-left: 22px;
}
.logo-text h1 {
  font-size: 20px;
  font-weight: 600;
  color: #1a3a6b;
  line-height: 1.1;
  margin: 0;
  white-space: nowrap;
  letter-spacing: 1px;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.logo-text p {
  font-size: 12px;
  color: #a0b2c8;
  margin: 0;
  letter-spacing: 1.2px;
  line-height: 1;
  white-space: nowrap;
  text-align: left;
  font-weight: 500;
  font-family: 'Segoe UI', sans-serif;
  transform: translateX(-0.5px);
}

/* === 3. 口号区域 === */
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 搜索图标按钮 */
.header-search-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #ffffff;
  border: 1.2px solid #d9e4f2;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0057b8;
  flex-shrink: 0;
  transition: all 0.22s ease;
  padding: 0;
  cursor: pointer;
}
.header-search-btn:hover {
  background: #f5f9ff;
  border-color: #0057b8;
  transform: translateY(-1px);
}
.header-search-btn svg {
  width: 24px;
  height: 24px;
  stroke: #0057b8;
}

.slogan-box {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  background: transparent;
  border: none;
  position: relative;
}

.slogan-text-group {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.2;
  gap: 4px;
}

.slogan-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.2;
}

.slogan-main {
  font-size: 16px;
  font-weight: 700;
  color: #003d82;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.slogan-main .divider {
  width: 1px;
  height: 15px;
  background: #c0d0e0;
}

.slogan-title-en {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 500;
  color: #6b8db5;
  letter-spacing: 1.5px;
  font-family: 'Segoe UI', sans-serif;
  text-transform: uppercase;
  line-height: 1;
  margin-top: 0;
}
.slogan-title-en .en-dot {
  font-size: 12px;
  color: #a0b2c8;
  line-height: 1;
}
.slogan-sub {
  font-size: 11px;
  color: #a0b2c8;
  margin-top: 4px;
  letter-spacing: 1px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: 'Segoe UI', sans-serif;
}
.slogan-sub .tag-dot {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: #c0d0e0;
  flex-shrink: 0;
}

/* 搜索模态框 */
.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 20, 50, 0.5);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 120px;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.search-modal.active {
  display: flex;
  opacity: 1;
}
.search-modal-box {
  width: 90%;
  max-width: 600px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0, 50, 120, 0.25);
  overflow: hidden;
  transform: translateY(-20px);
  transition: transform 0.3s ease;
}
.search-modal.active .search-modal-box {
  transform: translateY(0);
}
.search-modal-header {
  display: flex;
  align-items: center;
  padding: 18px 20px;
  border-bottom: 1px solid #eef2f8;
  gap: 12px;
}
.search-modal-header svg {
  width: 22px;
  height: 22px;
  color: #0057b8;
  flex-shrink: 0;
}
.search-modal-header input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 16px;
  color: #1a1f36;
  background: transparent;
  font-family: inherit;
}
.search-modal-header input::placeholder {
  color: #a0b0c5;
}
.search-modal-close {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #8891a6;
  transition: all 0.15s;
  flex-shrink: 0;
}
.search-modal-close:hover {
  background: #f0f2f6;
  color: #1a1f36;
}
.search-modal-close svg {
  width: 18px;
  height: 18px;
}
.search-modal-body {
  padding: 12px 20px 20px;
  max-height: 400px;
  overflow-y: auto;
}
.search-hot-title {
  font-size: 12px;
  color: #8891a6;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.search-hot-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.search-hot-tag {
  padding: 6px 14px;
  background: #f5f8fc;
  border-radius: 6px;
  font-size: 13px;
  color: #4a5568;
  cursor: pointer;
  transition: all 0.15s;
  border: none;
}
.search-hot-tag:hover {
  background: #e0edff;
  color: #0057b8;
}
.search-results {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.search-result-item {
  padding: 12px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.search-result-item:hover {
  background: #f5f8fc;
}
.search-result-info {
  flex: 1;
  min-width: 0;
}
.search-result-title {
  font-size: 14px;
  font-weight: 600;
  color: #1a1f36;
  margin-bottom: 3px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.search-result-desc {
  font-size: 12px;
  color: #6b7a8e;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.search-result-category {
  font-size: 11px;
  color: #0057b8;
  background: #eaf2ff;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}
.search-no-result {
  text-align: center;
  padding: 40px 20px;
  color: #8891a6;
  font-size: 14px;
}

/* 全局字体放大 */
body {
  font-size: 15.5px;
  line-height: 1.75;
}

.section-title h2 {
  font-size: 31px;
}

.section-title .sub-title {
  font-size: 16.5px;
}

.header-contact {
  display: none;
}

.nav {
  background-color: var(--primary-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all var(--transition-normal);
}

.nav.scrolled {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.nav .container {
  display: flex;
  align-items: center;
  height: 52px;
}

.nav-list {
  display: flex;
  flex: 1;
  flex-wrap: nowrap;
  justify-content: space-between;
  align-items: stretch;
  list-style: none;
  padding: 0 10px;
  margin: 0;
  gap: 2px;
}

.nav-item {
  position: relative;
  flex: 1 1 0;
  text-align: center;
  min-width: 0;
  max-width: 160px;
}

.nav-item > a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0 8px;
  line-height: 52px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition-fast);
  position: relative;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  letter-spacing: 0.3px;
}

.nav-item > a:hover {
  color: white;
}

.nav-item > a svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.nav-item .nav-icon {
  display: inline-flex;
  align-items: center;
}

.nav-item .nav-icon svg {
  width: 16px;
  height: 16px;
}

.nav-item > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary-color), #ffaa35);
  border-radius: 2px 2px 0 0;
  transition: width var(--transition-fast);
}

.nav-item:hover > a {
  background-color: var(--primary-dark);
  color: white;
}

.nav-item:hover > a::after,
.nav-item.active > a::after {
  width: 70%;
}

.nav-item.active > a {
  background: linear-gradient(180deg, #004d99 0%, #003d80 100%);
  color: white;
  box-shadow: inset 0 -3px 6px rgba(0, 0, 0, 0.15);
}

.nav-item.active > a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #0096ff, #0057b8, #0096ff);
}

.nav-item.active > a:hover {
  background: linear-gradient(180deg, #0057b8 0%, #004d99 100%);
}

.nav-item.has-dropdown {
  position: relative;
}

.nav-item.has-dropdown > a {
  padding-right: 30px;
}

.nav-item.has-dropdown .nav-arrow {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
  color: inherit;
  pointer-events: none;
  transition: transform var(--transition-fast);
}

.nav-item.has-dropdown:hover .nav-arrow {
  transform: translateY(-50%) rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% - 2px);
  left: 50%;
  transform: translateX(-50%) translateY(5px);
  min-width: 220px;
  width: max-content;
  max-width: 320px;
  background-color: var(--bg-white);
  box-shadow: var(--shadow-lg);
  border-radius: 0 0 8px 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
  z-index: 100;
  overflow: hidden;
  padding: 8px 0;
  pointer-events: none;
}

.nav-item:hover .nav-dropdown,
.nav-item:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown li a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  color: var(--text-dark);
  font-size: 14px;
  font-weight: 400;
  transition: all var(--transition-fast);
  border-bottom: 1px solid var(--border-light);
  line-height: 1.5;
}

.nav-dropdown li:last-child a {
  border-bottom: none;
}

.nav-dropdown li a:hover {
  background-color: var(--bg-light);
  color: var(--primary-color);
  padding-left: 22px;
}

.nav-dropdown .sub-icon {
  width: 16px;
  height: 16px;
  color: var(--accent-color);
  flex-shrink: 0;
}

.nav-dropdown .dash-prefix {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  min-width: 10px;
}

/* Grid dropdown layout for product categories - single row icon+text */
.nav-dropdown.grid-dropdown {
  min-width: auto;
  width: max-content;
  max-width: none;
  padding: 12px;
  display: grid;
  grid-template-columns: repeat(3, 200px);
  gap: 4px;
}

.nav-dropdown.grid-dropdown li {
  list-style: none;
}

.nav-dropdown.grid-dropdown li a {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  padding: 10px 14px 10px 10px;
  gap: 12px;
  border-bottom: none;
  border-radius: 10px;
  transition: all var(--transition-fast);
  cursor: pointer;
  min-height: 56px;
  text-align: left;
}

.nav-dropdown.grid-dropdown li a:hover {
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.08), rgba(0, 82, 163, 0.12));
  color: var(--primary-color);
  transform: translateX(2px);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.15);
}

.nav-dropdown.grid-dropdown .grid-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, #e8f1fb, #d4e4f7);
  color: var(--primary-color);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.nav-dropdown.grid-dropdown .grid-icon svg {
  width: 28px;
  height: 28px;
}

.nav-dropdown.grid-dropdown li a:hover .grid-icon {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark, #004499));
  color: #fff;
  transform: scale(1.08);
  box-shadow: 0 3px 8px rgba(0, 102, 204, 0.3);
}

.nav-dropdown.grid-dropdown .grid-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dark);
  line-height: 1.4;
  max-width: 136px;
  word-break: break-all;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-dropdown.grid-dropdown li a:hover .grid-label {
  color: var(--primary-color);
}

/* Grid dropdown - 2 columns for categories with ≤3 items */
.nav-dropdown.grid-dropdown.cols-2 {
  grid-template-columns: repeat(2, 200px);
}

.nav-search {
  display: none;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background-color: white;
  transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============== BANNER 轮播图 全新设计 ============== */
.banner {
  position: relative;
  height: 560px;
  overflow: hidden;
  background-color: #003a75;
}

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

.banner-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  transform: scale(1.05);
  transition: opacity 1.2s ease, transform 6s ease-out;
}

.banner-slide.active {
  opacity: 1;
  transform: scale(1);
  z-index: 2;
}

.banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 多层渐变遮罩，确保文字清晰可读同时与背景图融合 */
.banner-slide::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    linear-gradient(135deg, rgba(0, 34, 78, 0.92) 0%, rgba(0, 58, 117, 0.82) 30%, rgba(0, 58, 117, 0.55) 55%, rgba(0, 58, 117, 0.25) 75%, rgba(0, 30, 66, 0.45) 100%),
    linear-gradient(180deg, rgba(0, 30, 66, 0.25) 0%, rgba(0, 30, 66, 0) 25%, rgba(0, 30, 66, 0) 65%, rgba(0, 30, 66, 0.35) 100%);
  z-index: 1;
  pointer-events: none;
}

/* 主内容容器 */
.banner-content-wrap {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #ffffff;
  max-width: 720px;
  z-index: 5;
  width: 90%;
  text-align: left;
}

/* 标签 */
.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px 7px 14px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.95), rgba(255, 146, 43, 0.95));
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 24px;
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4), 0 0 0 3px rgba(255, 255, 255, 0.1);
  opacity: 0;
  transform: translateX(-40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.05s;
  letter-spacing: 0.5px;
}
.banner-slide.active .banner-tag {
  opacity: 1;
  transform: translateX(0);
}
.banner-tag svg {
  flex-shrink: 0;
}

/* 主标题 */
.banner-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 18px 0;
  color: #fff;
  letter-spacing: 0.5px;
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.9s cubic-bezier(0.4, 0, 0.2, 1) 0.2s;
  text-shadow:
    0 2px 10px rgba(0, 20, 50, 0.5),
    0 0 40px rgba(0, 102, 204, 0.3);
  position: relative;
  background: linear-gradient(180deg, #ffffff 0%, #d4eaff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.banner-slide.active .banner-title {
  opacity: 1;
  transform: translateX(0);
}

/* 副标题 */
.banner-subtitle {
  font-size: 18px;
  line-height: 1.8;
  margin: 0 0 28px 0;
  color: rgba(230, 242, 255, 0.92);
  font-weight: 400;
  max-width: 600px;
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.9s cubic-bezier(0.4, 0, 0.2, 1) 0.35s;
  text-shadow: 0 2px 8px rgba(0, 20, 50, 0.45);
  padding-left: 16px;
  border-left: 3px solid rgba(255, 107, 53, 0.85);
}
.banner-slide.active .banner-subtitle {
  opacity: 1;
  transform: translateX(0);
}

/* 亮点标签列表 */
.banner-highlights {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 34px;
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.9s cubic-bezier(0.4, 0, 0.2, 1) 0.5s;
}
.banner-slide.active .banner-highlights {
  opacity: 1;
  transform: translateX(0);
}
.banner-highlight-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px 8px 12px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  font-size: 14px;
  color: #eaf4ff;
  font-weight: 500;
  transition: all 0.3s ease;
}
.banner-highlight-item:hover {
  background: rgba(255, 107, 53, 0.18);
  border-color: rgba(255, 107, 53, 0.55);
  transform: translateY(-2px);
}
.hl-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff6b35, #ffc835);
  box-shadow: 0 0 8px rgba(255, 107, 53, 0.8);
  flex-shrink: 0;
}

/* 按钮组 */
.banner-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.9s cubic-bezier(0.4, 0, 0.2, 1) 0.65s;
}
.banner-slide.active .banner-actions {
  opacity: 1;
  transform: translateX(0);
}

/* 主按钮 */
.banner-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 32px;
  background: linear-gradient(135deg, #ff6b35 0%, #ff8a2b 50%, #ffa535 100%);
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  box-shadow:
    0 6px 24px rgba(255, 107, 53, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.12) inset;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.5px;
}
.banner-btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: left 0.6s ease;
}
.banner-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow:
    0 12px 32px rgba(255, 107, 53, 0.55),
    0 0 0 1px rgba(255, 255, 255, 0.18) inset;
}
.banner-btn-primary:hover::before { left: 100%; }

/* 次按钮：电话 */
.banner-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #eaf4ff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
}
.banner-btn-ghost svg { color: #ff6b35; }
.banner-btn-ghost strong {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.3px;
}
.banner-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
}

/* 装饰元素 */
.banner-decoration {
  position: absolute;
  right: 6%;
  bottom: 12%;
  z-index: 4;
  pointer-events: none;
  opacity: 0;
  transform: translateX(40px) scale(0.95);
  transition: all 1.2s cubic-bezier(0.4, 0, 0.2, 1) 0.6s;
}
.banner-slide.active .banner-decoration {
  opacity: 1;
  transform: translateX(0) scale(1);
}
.deco-circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.deco-circle-1 {
  width: 240px;
  height: 240px;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255, 107, 53, 0.18), transparent 60%);
  animation: floatY 6s ease-in-out infinite;
}
.deco-circle-2 {
  width: 150px;
  height: 150px;
  right: 110px;
  bottom: 120px;
  background: radial-gradient(circle at 70% 70%, rgba(0, 150, 255, 0.2), transparent 65%);
  animation: floatY 7s ease-in-out infinite 1s;
}
.deco-lines {
  position: absolute;
  right: 30px;
  bottom: 220px;
  display: flex;
  gap: 6px;
  transform: rotate(-20deg);
}
.deco-lines span {
  display: block;
  width: 2px;
  height: 36px;
  background: linear-gradient(180deg, transparent, rgba(255, 107, 53, 0.8), transparent);
  border-radius: 2px;
}
.deco-lines span:nth-child(1) { height: 24px; opacity: 0.5; }
.deco-lines span:nth-child(2) { height: 40px; opacity: 0.7; }
.deco-lines span:nth-child(3) { height: 32px; opacity: 0.85; }
.deco-lines span:nth-child(4) { height: 48px; opacity: 1; }

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* 轮播指示器 */
.banner-dots {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}
.banner-dot {
  width: 30px;
  height: 4px;
  border-radius: 3px;
  background-color: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}
.banner-dot.active {
  background-color: rgba(255, 107, 53, 0.3);
  width: 48px;
}
.banner-dot.active::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #ff6b35, #ffa535);
  border-radius: 3px;
  animation: dotProgress 5s linear forwards;
}
@keyframes dotProgress {
  from { width: 0; }
  to { width: 100%; }
}

/* 左右箭头 */
.banner-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  background-color: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10;
}
.banner-arrow:hover {
  background: linear-gradient(135deg, #ff6b35, #ffa535);
  border-color: transparent;
  transform: translateY(-50%) scale(1.08);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.45);
}
.banner-prev { left: 24px; }
.banner-next { right: 24px; }

/* 与旧类名兼容（其他文件可能还引用了.banner-content） */
.banner-content {
  position: absolute;
  top: 50%;
  left: 10%;
  transform: translateY(-50%);
  color: white;
  max-width: 600px;
  z-index: 2;
}
.banner-content h2 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
  color: #fff;
}
.banner-content p {
  font-size: 20px;
  margin-bottom: 30px;
  color: rgba(255,255,255,0.9);
}

.quick-nav {
  background-color: var(--bg-light);
  padding: 40px 0;
}

.quick-nav .container {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.quick-nav-item {
  text-align: center;
  padding: 25px 15px;
  background-color: var(--bg-white);
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.quick-nav-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.quick-nav-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 15px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 28px;
  transition: all var(--transition-normal);
}

.quick-nav-item:hover .quick-nav-icon {
  transform: scale(1.1) rotate(5deg);
}

.quick-nav-item h3 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-dark);
}

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

.products-filter {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 24px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-white);
  color: var(--text-gray);
  border-radius: 24px;
  cursor: pointer;
  font-size: 14px;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.product-card {
  background-color: var(--bg-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.product-image {
  position: relative;
  overflow: hidden;
  height: 240px;
  background-color: var(--bg-light);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 20px;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-image img {
  transform: scale(1.08);
}

.product-tag {
  position: absolute;
  top: 15px;
  left: 15px;
  padding: 4px 12px;
  background-color: var(--secondary-color);
  color: white;
  font-size: 12px;
  border-radius: 4px;
}

.product-info {
  padding: 20px;
}

.product-category {
  font-size: 12px;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.product-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 10px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-info p {
  font-size: 13px;
  color: var(--text-gray);
  margin-bottom: 15px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-price {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-price .price {
  font-size: 18px;
  font-weight: 700;
  color: var(--secondary-color);
}

.product-price .detail-btn {
  font-size: 13px;
  color: var(--primary-color);
  transition: all var(--transition-fast);
}

.product-price .detail-btn:hover {
  letter-spacing: 1px;
}

.product-price .cart-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: #f5f9ff;
  border: 1.2px solid #b3d1ff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0057b8;
  text-decoration: none;
  transition: all 0.22s ease;
  cursor: pointer;
}
.product-price .cart-icon-btn:hover {
  background: #0057b8;
  color: #fff;
  border-color: #0057b8;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 87, 184, 0.2);
}
.product-price .cart-icon-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
}

.about-section {
  padding: 30px 0;
  background: linear-gradient(135deg, var(--bg-light) 0%, #e8f4fd 100%);
}

.about-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.about-image::after {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  right: 20px;
  bottom: 20px;
  border: 3px solid var(--primary-color);
  border-radius: 12px;
  z-index: -1;
}

.about-content h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
}

.about-content h2 span {
  color: var(--primary-color);
}

.about-content .subtitle {
  font-size: 16px;
  color: var(--text-gray);
  margin-bottom: 30px;
  line-height: 1.8;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.about-feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 22px;
  flex-shrink: 0;
}

.about-feature h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.about-feature p {
  font-size: 13px;
  color: var(--text-gray);
}

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

.applications-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.application-card {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  height: 280px;
  cursor: pointer;
}

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

.application-card:hover img {
  transform: scale(1.1);
}

.application-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px 25px;
  transition: background var(--transition-normal);
}

.application-card:hover .application-overlay {
  background: linear-gradient(to top, rgba(0, 102, 204, 0.9) 0%, rgba(0, 102, 204, 0.3) 100%);
}

.application-overlay h3 {
  font-size: 20px;
  font-weight: 600;
  color: white;
  margin-bottom: 10px;
  transition: transform var(--transition-normal);
}

.application-card:hover .application-overlay h3 {
  transform: translateY(-10px);
}

.application-overlay p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-normal);
}

.application-card:hover .application-overlay p {
  opacity: 1;
  transform: translateY(0);
}

.application-more {
  margin-top: 10px;
  color: var(--secondary-color);
  font-size: 14px;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-normal);
}

.application-card:hover .application-more {
  opacity: 1;
  transform: translateY(0);
}

.news-section {
  padding: 30px 0;
  background-color: var(--bg-light);
}

.news-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 30px;
}

.news-featured {
  grid-column: span 1;
}

.news-featured-card {
  background-color: var(--bg-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  height: 100%;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.news-featured-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.news-featured-image {
  height: 220px;
  overflow: hidden;
}

.news-featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.news-featured-card:hover .news-featured-image img {
  transform: scale(1.05);
}

.news-featured-content {
  padding: 25px;
}

.news-category {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--primary-color);
  color: white;
  font-size: 12px;
  border-radius: 4px;
  margin-bottom: 15px;
}

.news-featured-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 12px;
  line-height: 1.5;
}

.news-featured-content p {
  font-size: 14px;
  color: var(--text-gray);
  margin-bottom: 20px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-date {
  font-size: 13px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-list {
  grid-column: span 2;
}

.news-list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.news-list-header h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-dark);
}

.news-tabs {
  display: flex;
  gap: 20px;
}

.news-tab {
  font-size: 15px;
  color: var(--text-gray);
  cursor: pointer;
  padding-bottom: 5px;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.news-tab:hover,
.news-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.news-list-items {
  background-color: var(--bg-white);
  border-radius: 12px;
  padding: 10px 25px;
  box-shadow: var(--shadow-sm);
}

.news-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.news-item:hover {
  padding-left: 10px;
}

.news-item-date {
  text-align: center;
  flex-shrink: 0;
  width: 70px;
}

.news-item-date .day {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1;
}

.news-item-date .month {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 4px;
}

.news-item-content {
  flex: 1;
}

.news-item-content h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 8px;
  transition: color var(--transition-fast);
}

.news-item:hover .news-item-content h4 {
  color: var(--primary-color);
}

.news-item-content p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.certifications-slider {
  position: relative;
  overflow: hidden;
}

.certifications-track {
  display: flex;
  gap: 30px;
  transition: transform var(--transition-slow);
}

.certification-item {
  flex-shrink: 0;
  width: calc((100% - 150px) / 6);
  text-align: center;
}

.certification-image {
  background-color: var(--bg-light);
  border-radius: 8px;
  padding: 15px;
  margin-bottom: 15px;
  transition: all var(--transition-normal);
}

.certification-item:hover .certification-image {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.certification-image img {
  width: 100%;
  height: 120px;
  object-fit: contain;
}

.certification-item p {
  font-size: 13px;
  color: var(--text-gray);
}

.contact-section {
  padding: 30px 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 20px;
}

.contact-info .subtitle {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: 40px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 20px;
}

.contact-item-icon {
  width: 56px;
  height: 56px;
  background-color: rgba(255, 255, 255, 0.15);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.contact-item-text h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-item-text p {
  font-size: 15px;
  opacity: 0.9;
}

.contact-form {
  background-color: var(--bg-white);
  border-radius: 16px;
  padding: 40px;
  color: var(--text-dark);
  box-shadow: var(--shadow-xl);
}

.contact-form h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 25px;
  color: var(--text-dark);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.form-group label span {
  color: #ff4d4f;
  margin-left: 2px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-dark);
  transition: all var(--transition-fast);
  outline: none;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.submit-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.submit-btn:active {
  transform: translateY(0);
}

/* ========== 高端页脚设计 ========== */
.footer {
  background: linear-gradient(180deg, #0a1929 0%, #0d2138 50%, #102844 100%);
  color: rgba(255, 255, 255, 0.65);
  padding: 54px 0 54px;
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, #0057b8 20%, #0096ff 50%, #0057b8 80%, transparent 100%);
}

.footer .container {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* 页脚LOGO区域 */
.footer-about .logo {
  margin-bottom: 22px;
  gap: 12px;
}
.footer-about .logo-ucscan {
  gap: 12px;
}
.footer-about .logo-emblem {
  width: 88px;
  height: 44px;
  color: #ffffff;
}
.footer-about .logo-emblem svg {
  color: #ffffff;
}
.footer-about .logo-brand-name {
  font-size: 21px;
  color: #ffffff;
  background: none;
  -webkit-text-fill-color: #ffffff;
}
.footer-about .logo-brand-name .brand-sep {
  color: rgba(255, 255, 255, 0.5);
}
.footer-about .logo-brand-sub {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.45);
}
.footer-about .logo-text {
  padding-left: 14px;
  height: auto;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-about .logo-text h1 {
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
}
.footer-about .logo-text p {
  color: rgba(255, 255, 255, 0.4);
  font-size: 10px;
}

.footer-qrcode {
  margin-bottom: 20px;
  text-align: left;
}
.footer-qrcode-img-wrap {
  display: inline-block;
  background: #fff;
  padding: 10px;
  border-radius: 8px;
  margin-bottom: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
.footer-qrcode-img-wrap img {
  display: block;
  width: 110px;
  height: 110px;
  object-fit: contain;
}
.footer-qrcode-tip {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
  text-align: left;
  letter-spacing: 0.5px;
}

/* 社交图标 */
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 38px;
  height: 38px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.footer-social a::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0057b8, #0096ff);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.footer-social a svg {
  position: relative;
  z-index: 1;
}
.footer-social a:hover {
  border-color: transparent;
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0, 120, 212, 0.4);
}
.footer-social a:hover::before {
  opacity: 1;
}

/* 列标题 */
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 22px;
  position: relative;
  padding-bottom: 12px;
  letter-spacing: 0.5px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, #0057b8, #0096ff);
  border-radius: 1px;
}
.footer-col h4::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 32px;
  width: 8px;
  height: 2px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 1px;
}

/* 链接列表 */
.footer-links li {
  margin-bottom: 11px;
}
.footer-links li a {
  font-size: 13px;
  transition: all 0.25s ease;
  position: relative;
  padding-left: 14px;
  color: rgba(255, 255, 255, 0.55);
}
.footer-links li a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(0, 150, 255, 0.4);
  transition: all 0.25s ease;
}
.footer-links li a:hover {
  color: #40b4ff;
  padding-left: 20px;
}
.footer-links li a:hover::before {
  background: #0096ff;
  box-shadow: 0 0 8px rgba(0, 150, 255, 0.6);
}

/* 联系方式 */
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.55);
}
.footer-contact li svg {
  color: #0096ff;
  margin-top: 2px;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

/* 底部版权 */
.footer-bottom {
  background: rgba(0, 0, 0, 0.2);
  text-align: center;
  padding: 18px 0;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.5px;
  height: 86px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer-bottom .container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: nowrap;
  height: 50px;
}
.footer-bottom p {
  white-space: nowrap;
  margin: 0;
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.35);
  transition: color 0.25s ease;
}
.footer-bottom a:hover {
  color: #40b4ff;
}

.fixed-sidebar {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-item {
  width: 60px;
  background-color: var(--primary-color);
  color: white;
  text-align: center;
  padding: 12px 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.sidebar-item:first-child {
  border-radius: 8px 8px 0 0;
}

.sidebar-item:last-child {
  border-radius: 0 0 8px 8px;
}

.sidebar-item:hover {
  background-color: var(--primary-dark);
  width: 70px;
  margin-left: -10px;
}

.sidebar-item i {
  font-size: 22px;
  display: block;
  margin-bottom: 4px;
}

.sidebar-item span {
  font-size: 12px;
}

.sidebar-popup {
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--bg-white);
  color: var(--text-dark);
  padding: 15px 20px;
  border-radius: 8px;
  box-shadow: var(--shadow-xl);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  margin-right: 10px;
  white-space: nowrap;
}

.sidebar-item:hover .sidebar-popup {
  opacity: 1;
  visibility: visible;
  margin-right: 15px;
}

.sidebar-popup::after {
  content: '';
  position: absolute;
  right: -8px;
  top: 50%;
  transform: translateY(-50%);
  border: 8px solid transparent;
  border-left-color: var(--bg-white);
}

.sidebar-popup .qrcode {
  width: 120px;
  height: 120px;
  background-color: var(--bg-light);
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-popup p {
  font-size: 13px;
  text-align: center;
  color: var(--text-gray);
}

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 20px;
  width: 48px;
  height: 48px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 999;
  box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background-color: var(--bg-white);
  border-radius: 16px;
  max-width: 800px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  background-color: var(--bg-white);
  z-index: 1;
}

.modal-header h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-dark);
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background-color: var(--bg-light);
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  color: var(--text-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--bg-gray);
  color: var(--text-dark);
}

.modal-body {
  padding: 25px;
}

.breadcrumb {
  position: relative;
  height: 250px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.35) 0%, rgba(220, 235, 250, 0.25) 50%, rgba(0, 102, 204, 0.15) 100%);
  z-index: 1;
}

.breadcrumb .container {
  position: relative;
  z-index: 2;
  color: white;
}

.breadcrumb h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}

.breadcrumb-nav {
  font-size: 14px;
  opacity: 0.92;
}

.breadcrumb-nav a {
  color: white;
}

.breadcrumb-nav a:hover {
  opacity: 0.8;
}

.breadcrumb-nav span {
  margin: 0 8px;
}

.search-bar-section {
  background: #f8f9fa;
  padding: 16px 0;
  border-bottom: 1px solid #e4e7ed;
}

.search-bar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: nowrap;
}

.hot-keywords {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.hot-label {
  font-weight: 600;
  color: var(--primary-color);
  font-size: 13px;
  white-space: nowrap;
  flex-shrink: 0;
}

.keyword-tag {
  padding: 3px 12px;
  background: white;
  border: 1px solid #e4e7ed;
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-gray);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}

.keyword-tag:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.keyword-more {
  font-size: 14px;
  color: var(--text-gray);
  cursor: pointer;
  padding: 3px 6px;
  flex-shrink: 0;
}

.keyword-more:hover {
  color: var(--primary-color);
}

.search-form {
  display: flex;
  align-items: center;
  gap: 0;
  border: 2px solid var(--primary-color);
  border-radius: 6px;
  overflow: hidden;
  width: 360px;
  flex-shrink: 0;
}

.search-category {
  height: 38px;
  border: none;
  border-right: 1px solid #e4e7ed;
  padding: 0 12px;
  font-size: 13px;
  outline: none;
  background: white;
  cursor: pointer;
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  height: 38px;
  border: none;
  padding: 0 12px;
  font-size: 13px;
  outline: none;
  min-width: 0;
}

.search-input::placeholder {
  color: #c0c4cc;
}

.search-btn {
  height: 38px;
  padding: 0 20px;
  background: var(--primary-color);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: background 0.2s;
  flex-shrink: 0;
}

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

.products-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
}

.products-sidebar {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  height: fit-content;
  position: sticky;
  top: 180px;
}

.sidebar-header {
  background: linear-gradient(135deg, #0066cc 0%, #0052a3 100%);
  color: white;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-icon {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-title h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 2px;
}

.sidebar-title span {
  font-size: 11px;
  opacity: 0.8;
  letter-spacing: 1px;
}

.sidebar-menu {
  padding: 12px;
  list-style: none;
  margin: 0;
}

.sidebar-menu > li {
  list-style: none;
  margin-bottom: 2px;
}

.sidebar-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-dark);
  transition: all 0.2s;
  margin-bottom: 4px;
}

.sidebar-menu-item:hover {
  background: #f0f7ff;
  color: var(--primary-color);
}

.sidebar-menu-item.active {
  background: linear-gradient(135deg, #0066cc 0%, #0077dd 100%);
  color: white;
}

/* ============================================
   [全站统一] 侧栏图标尺寸
   行业应用/服务支持/联系我们 左侧菜单 + 联系我们子页侧边栏 + 产品中心侧栏
   ============================================ */
.sidebar-menu-item svg:first-of-type,
.sidebar-menu-item svg:not(.arrow-icon),
#categoryList .category-link svg {
  width: 16px !important;
  height: 16px !important;
  flex-shrink: 0 !important;
  display: inline-block;
}

.cs-sidebar-item svg {
  width: 16px !important;
  height: 16px !important;
  flex-shrink: 0 !important;
  display: inline-block;
}

/* ============================================
   产品中心侧栏 category-link 悬停动态效果
   ============================================ */
#categoryList {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 10px;
}

#categoryList li {
  list-style: none;
}

#categoryList .category-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  border-radius: 8px;
  color: #333;
  background: transparent;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 600;
  text-decoration: none;
  will-change: transform, background-color, box-shadow;
}

#categoryList .category-link > span:first-of-type {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), color 0.2s;
}

#categoryList .category-link svg {
  width: 16px !important;
  height: 16px !important;
}

/* Root / 一级栏目（含箭头） */
#categoryList .category-link.cat-root {
  color: #1a1a1a;
  font-weight: 700;
  padding: 10px 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}
#categoryList .category-link.cat-root .arrow-icon {
  margin-left: auto;
  width: 14px !important;
  height: 14px !important;
  color: #999;
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), color 0.25s;
  flex-shrink: 0;
}
/* open 态：箭头旋转 90deg（指向下） */
#categoryList .sidebar-menu-group.open > .cat-root .arrow-icon,
#categoryList .category-link.cat-root.active .arrow-icon {
  transform: rotate(90deg);
  color: var(--primary-color);
}

/* Sidebar menu group（一级栏目的 li 包裹） */
#categoryList .sidebar-menu-group {
  overflow: hidden;
}

/* Child / 二级栏目（位于 sidebar-submenu 内，带平滑展开过渡） */
#categoryList .sidebar-submenu {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 0 6px 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.32s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.25s ease,
              padding 0.28s ease;
}
#categoryList .sidebar-menu-group.open > .sidebar-submenu {
  max-height: 800px; /* 充足的上限值，保证所有子项都能展开 */
  opacity: 1;
  padding: 4px 0 8px 0;
}
#categoryList .category-link.cat-child {
  color: #555;
  font-weight: 400;
  font-size: 13px;
  padding: 8px 15px 8px 30px;
  margin-left: 10px;
}

/* === Hover 动态效果 === */
#categoryList .category-link:not(.active):hover {
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.08), rgba(0, 153, 255, 0.04));
  color: var(--primary-color);
  transform: translateX(4px);
  box-shadow: 0 2px 10px rgba(0, 102, 204, 0.1);
}

#categoryList .category-link:not(.active):hover::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--primary-color);
  border-radius: 0 2px 2px 0;
  animation: sidebarBarSlide 0.25s ease-out forwards;
}

@keyframes sidebarBarSlide {
  from { left: -16px; opacity: 0; }
  to   { left: -10px; opacity: 1; }
}

#categoryList .category-link:not(.active):hover > span:first-of-type {
  transform: scale(1.15) rotate(-5deg);
  color: var(--primary-color);
}

/* Active 选中态（更突出） */
#categoryList .category-link.active {
  background: linear-gradient(135deg, #0066cc 0%, #0077dd 100%);
  color: #fff !important;
  box-shadow: 0 3px 10px rgba(0, 102, 204, 0.35);
  transform: translateX(2px);
}

#categoryList .category-link.active > span:first-of-type {
  transform: scale(1.1);
  color: #fff;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
}

/* Child 选中态：边框略有差异 */
#categoryList .category-link.cat-child.active {
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3);
}

/* Child hover 位移稍小 */
#categoryList .category-link.cat-child:not(.active):hover {
  transform: translateX(3px);
}

/* ============================================================
   全站通用：侧边栏分组折叠 + 动画（行业/服务/联系/下载等页与产品中心统一）
   —— 同时作用于 #categoryList 容器 与 .sidebar-menu 容器
   ============================================================ */

/* 一级栏目（cat-root）：flex 布局 + 箭头自动靠右 */
.sidebar-menu .category-link,
.sidebar-menu a.category-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  border-radius: 8px;
  color: #1a1a1a;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.sidebar-menu .category-link > span:first-of-type {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.sidebar-menu .category-link svg {
  width: 16px !important;
  height: 16px !important;
  flex-shrink: 0 !important;
}

/* Root / 一级栏目标题加粗 + 箭头样式 */
.sidebar-menu .category-link.cat-root {
  color: #1a1a1a;
  font-weight: 700;
  padding: 10px 15px;
}
.sidebar-menu .category-link.cat-root .arrow-icon,
.sidebar-menu-item svg.arrow-icon {
  margin-left: auto;
  width: 14px !important;
  height: 14px !important;
  color: #999;
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), color 0.25s;
  flex-shrink: 0;
}

/* open 态：箭头旋转 90deg（指向下） */
.sidebar-menu .sidebar-menu-group.open > .category-link.cat-root .arrow-icon,
#categoryList .sidebar-menu-group.open > .cat-root .arrow-icon,
#categoryList .category-link.cat-root.active .arrow-icon,
.sidebar-menu .category-link.cat-root.active .arrow-icon,
.sidebar-menu-item.active .arrow-icon {
  transform: rotate(90deg);
  color: var(--primary-color);
}

/* Sidebar menu group（一级栏目的包裹） */
.sidebar-menu .sidebar-menu-group,
#categoryList .sidebar-menu-group {
  overflow: hidden;
}

/* 二级栏目 sidebar-submenu 平滑展开过渡 max-height + opacity */
.sidebar-menu .sidebar-submenu,
#categoryList .sidebar-submenu {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 0 6px 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.32s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.25s ease,
              padding 0.28s ease;
  margin: 0;
  list-style: none;
}
.sidebar-menu .sidebar-menu-group.open > .sidebar-submenu,
#categoryList .sidebar-menu-group.open > .sidebar-submenu {
  max-height: 800px;
  opacity: 1;
  padding: 4px 0 8px 0;
}

/* 二级栏目链接（统一视觉缩进） */
.sidebar-menu .category-link.cat-child,
#categoryList .category-link.cat-child {
  color: #555;
  font-weight: 400;
  font-size: 13px;
  padding: 8px 15px 8px 30px;
  margin-left: 10px;
}

/* —— 通用 hover 动态效果（与 #categoryList 对齐）—— */
.sidebar-menu .category-link:not(.active):hover {
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.08), rgba(0, 153, 255, 0.04));
  color: var(--primary-color);
  transform: translateX(4px);
  box-shadow: 0 2px 10px rgba(0, 102, 204, 0.1);
}
.sidebar-menu .category-link:not(.active):hover::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--primary-color);
  border-radius: 0 2px 2px 0;
  animation: sidebarBarSlide 0.25s ease-out forwards;
}
.sidebar-menu .category-link:not(.active):hover > span:first-of-type {
  transform: scale(1.15) rotate(-5deg);
  color: var(--primary-color);
}

/* —— 通用 Active 选中态（蓝色渐变高亮）—— */
.sidebar-menu .category-link.active,
#categoryList .category-link.active {
  background: linear-gradient(135deg, #0066cc 0%, #0077dd 100%);
  color: #fff !important;
  box-shadow: 0 3px 10px rgba(0, 102, 204, 0.35);
  transform: translateX(2px);
}
.sidebar-menu .category-link.active > span:first-of-type,
#categoryList .category-link.active > span:first-of-type {
  transform: scale(1.1);
  color: #fff;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
}
.sidebar-menu .category-link.cat-child.active,
#categoryList .category-link.cat-child.active {
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3);
}
.sidebar-menu .category-link.cat-child:not(.active):hover,
#categoryList .category-link.cat-child:not(.active):hover {
  transform: translateX(3px);
}

/* 向后兼容：旧的 .sidebar-submenu a 选择器保留作兜底 */
.sidebar-menu-group.open .sidebar-menu-item .arrow-icon {
  transform: rotate(90deg);
}
.sidebar-submenu a {
  display: block;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-gray);
  border-radius: 6px;
  transition: all 0.2s;
  text-decoration: none;
}
.sidebar-submenu a:hover {
  background: #f0f7ff;
  color: var(--primary-color);
  padding-left: 16px;
}

.sidebar-contact {
  margin: 0 12px 12px;
  padding: 16px;
  background: linear-gradient(135deg, #f0f7ff 0%, #e6f0fa 100%);
  border-radius: 8px;
  text-align: center;
}

.sidebar-contact p {
  font-size: 12px;
  color: var(--text-gray);
  margin-bottom: 6px;
}

.sidebar-contact .phone {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-color);
  margin: 0;
}

.products-main {
  min-width: 0;
}

.products-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-gray);
}

.toolbar-left svg {
  color: var(--primary-color);
}

.toolbar-left a {
  color: var(--primary-color);
  font-weight: 500;
}

.toolbar-left .sep {
  color: #ccc;
  margin: 0 4px;
}

.toolbar-left strong {
  color: var(--text-dark);
  font-weight: 600;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.count-label {
  font-size: 13px;
  color: var(--text-gray);
}

.count-label strong {
  color: var(--primary-color);
  font-size: 16px;
  margin: 0 2px;
}

.sort-group {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-gray);
}

.sort-btn {
  padding: 5px 14px;
  border: 1px solid #e4e7ed;
  background: white;
  border-radius: 16px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.sort-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.sort-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.back-home {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  background: linear-gradient(135deg, #0066cc 0%, #0077dd 100%);
  color: white;
  border: none;
  border-radius: 16px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.back-home:hover {
  background: linear-gradient(135deg, #0052a3 0%, #0066cc 100%);
  transform: translateY(-1px);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.page-content {
  padding: 20px 0;
}

.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.pagination a,
.pagination span {
  min-width: 38px;
  height: 38px;
  padding: 0 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-gray);
  font-size: 14px;
  transition: all var(--transition-fast);
}

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

.pagination .active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .footer .container {
    grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
    gap: 20px;
  }

  .footer-about {
    grid-column: auto;
  }

  .nav-item > a {
    padding: 0 4px;
    font-size: 14px;
    gap: 4px;
    letter-spacing: 0.3px;
  }

  .header-right {
    gap: 16px;
  }

  .nav-search input {
    width: 120px;
  }

  .banner {
    height: 400px;
  }

  .banner-content h2 {
    font-size: 36px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }

  .top-bar {
    display: none;
  }

  .header .container {
    height: 68px;
  }

  .logo img {
    height: 34px;
  }

  .logo-ucscan {
    gap: 8px;
  }

  .logo-emblem {
    width: 52px;
    height: 26px;
  }

  .logo-emblem svg {
    width: 52px;
    height: 26px;
  }

  .logo {
    gap: 10px;
  }

  .logo-brand-name {
    font-size: 18px;
    letter-spacing: 1px;
  }

  .logo-brand-sub {
    display: none;
  }

  .logo-text {
    height: auto;
    gap: 2px;
    padding-left: 12px;
  }

  .logo-text h1 {
    font-size: 14px;
    letter-spacing: 0.5px;
  }

  .logo-text p {
    display: none;
  }

  .header-contact {
    display: none;
  }

  .slogan-box {
    display: none;
  }

  /* 移动端：搜索图标尺寸 */
  .header-right {
    gap: 8px;
  }
  .header-search-btn {
    width: 34px;
    height: 34px;
  }
  .header-search-btn svg {
    width: 17px;
    height: 17px;
  }

  .nav .container {
    height: auto;
    padding: 0;
  }

  .nav-list {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--bg-white);
    flex-direction: column;
    padding-top: 60px;
    z-index: 1001;
    transition: left var(--transition-normal);
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
  }

  .nav-list.active {
    left: 0;
  }

  .nav-item > a {
    color: var(--text-dark);
    line-height: 50px;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-item:hover > a,
  .nav-item.active > a {
    background-color: var(--bg-light);
    color: var(--primary-color);
  }

  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border-radius: 0;
    display: none;
    pointer-events: auto;
  }

  .nav-item.open .nav-dropdown {
    display: block;
  }

  .nav-dropdown li a {
    padding-left: 40px;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .nav-search {
    display: none;
  }

  .mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
  }

  .mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  .banner {
    height: 280px;
  }

  .breadcrumb {
    height: 180px;
  }

  .breadcrumb h1 {
    font-size: 24px;
  }

  .banner {
    height: 440px;
  }

  .banner-content-wrap {
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    width: 90%;
  }

  .banner-tag {
    padding: 5px 14px 5px 10px;
    font-size: 12px;
    margin-bottom: 16px;
  }

  .banner-title {
    font-size: 28px;
    margin-bottom: 12px;
  }

  .banner-subtitle {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 18px;
    padding-left: 12px;
  }

  .banner-highlights {
    gap: 8px;
    margin-bottom: 22px;
  }

  .banner-highlight-item {
    padding: 6px 12px 6px 10px;
    font-size: 12px;
    gap: 6px;
  }

  .banner-actions {
    gap: 10px;
    flex-direction: column;
    align-items: flex-start;
  }

  .banner-btn-primary {
    padding: 12px 24px;
    font-size: 14px;
  }

  .banner-btn-ghost {
    padding: 11px 18px;
    font-size: 12px;
  }

  .banner-decoration { display: none; }

  /* 兼容旧banner样式 */
  .banner-content {
    left: 5%;
    max-width: 90%;
  }

  .banner-content h2 {
    font-size: 24px;
    margin-bottom: 10px;
  }

  .banner-content p {
    font-size: 14px;
    margin-bottom: 20px;
  }

  .banner-dots {
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
  }

  .banner-dot {
    width: 22px;
  }
  .banner-dot.active {
    width: 36px;
  }

  .banner-arrow {
    display: none;
  }

  .quick-nav {
    padding: 30px 0;
  }

  .quick-nav .container {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .quick-nav-item {
    padding: 18px 10px;
  }

  .quick-nav-icon {
    width: 48px;
    height: 48px;
    font-size: 22px;
  }

  .quick-nav-item h3 {
    font-size: 14px;
  }

  .section-title {
    margin-bottom: 30px;
  }

  .section-title h2 {
    font-size: 24px;
  }

  .products-section,
  .about-section,
  .applications-section,
  .news-section,
  .certifications-section {
    padding: 50px 0;
  }

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .products-layout {
    grid-template-columns: 1fr;
  }

  .products-sidebar {
    position: static;
  }

  .search-bar-row {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
  }

  .hot-keywords {
    flex-wrap: wrap;
    overflow: visible;
  }

  .search-form {
    width: 100%;
  }

  .search-category {
    padding: 0 10px;
    font-size: 12px;
  }

  .search-input {
    font-size: 13px;
  }

  .search-btn {
    padding: 0 16px;
    font-size: 13px;
  }

  .products-toolbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .toolbar-right {
    width: 100%;
    justify-content: space-between;
  }

  .sort-group {
    flex-wrap: wrap;
  }

  .product-image {
    height: 160px;
  }

  .product-info {
    padding: 15px;
  }

  .product-info h3 {
    font-size: 14px;
  }

  .product-info p {
    font-size: 12px;
  }

  .about-wrapper {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .about-image img {
    height: 250px;
  }

  .about-content h2 {
    font-size: 24px;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .applications-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .application-card {
    height: 200px;
  }

  .news-wrapper {
    grid-template-columns: 1fr;
  }

  .news-featured,
  .news-list {
    grid-column: span 1;
  }

  .news-featured-content h3 {
    font-size: 18px;
  }

  .news-item {
    gap: 15px;
    padding: 15px 0;
  }

  .news-item-date {
    width: 55px;
  }

  .news-item-date .day {
    font-size: 22px;
  }

  .news-item-content h4 {
    font-size: 15px;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .contact-info h2 {
    font-size: 24px;
  }

  .contact-form {
    padding: 25px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .footer .container {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
    padding-bottom: 30px;
  }

  .footer-about {
    grid-column: auto;
  }

  .fixed-sidebar {
    display: none;
  }

  .certification-item {
    width: calc((100% - 60px) / 3);
  }
}

@media (max-width: 480px) {
  .products-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-about {
    grid-column: span 2;
  }

  .products-filter {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 5px;
  }

  .filter-btn {
    flex-shrink: 0;
  }

  .certification-item {
    width: calc((100% - 30px) / 2);
  }

  .news-tabs {
    gap: 15px;
  }

  .news-tab {
    font-size: 14px;
  }
}

/* ========== Service Page Sections ========== */
.service-section {
  padding: 50px 0 20px;
}
.service-section > .container {
  width: 100%;
  max-width: 100%;
  padding: 0;
}
.service-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 30px;
}
.service-card {
  background: #fff;
  border-radius: 12px;
  padding: 28px 24px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #eef1f6;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0, 102, 204, 0.12);
  border-color: rgba(0, 102, 204, 0.2);
}
.service-card-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, #e8f1ff, #f3f7ff);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.service-card-icon svg {
  color: var(--primary-color);
}
/* 不同栏目图标背景色，与内容主题关联 */
#warranty .service-card-icon {
  background: linear-gradient(135deg, #e6f4ea, #f0fdf4);
  color: #2f855a;
}
#warranty .service-card-icon svg {
  color: #2f855a;
}
#training .service-card-icon {
  background: linear-gradient(135deg, #fff4e0, #fff8ee);
  color: #c05621;
}
#training .service-card-icon svg {
  color: #c05621;
}
#after-service .service-card-icon {
  background: linear-gradient(135deg, #f3e8ff, #faf5ff);
  color: #6b46c1;
}
#after-service .service-card-icon svg {
  color: #6b46c1;
}
#tech-support .service-card-icon {
  background: linear-gradient(135deg, #e6fffa, #f0fffd);
  color: #2c7a7b;
}
#tech-support .service-card-icon svg {
  color: #2c7a7b;
}
.service-card h3 {
  font-size: 17px;
  color: var(--text-dark);
  margin-bottom: 10px;
  font-weight: 600;
}
.service-card p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
  margin: 0;
}

/* ========== Download Section ========== */
.download-list {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.download-item {
  background: #fff;
  border: 1px solid #eef1f6;
  border-radius: 12px;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}
.download-item:hover {
  border-color: rgba(0, 102, 204, 0.35);
  box-shadow: 0 6px 20px rgba(0, 102, 204, 0.08);
}
.download-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, #e8f1ff, #f3f7ff);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
}
.download-info {
  flex: 1;
  min-width: 0;
}
.download-info h4 {
  font-size: 15px;
  color: var(--text-dark);
  margin: 0 0 4px 0;
  font-weight: 600;
}
.download-info p {
  font-size: 13px;
  color: var(--text-light);
  margin: 0;
}
.download-btn {
  flex-shrink: 0;
  padding: 8px 22px;
  background: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s ease;
}
.download-btn:hover {
  background: var(--primary-dark);
}

/* ========== FAQ Section (手风琴) ========== */
.faq-list {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: #fff;
  border: 1px solid #eef1f6;
  border-radius: 12px;
  overflow: hidden;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}
.faq-item:hover {
  border-color: rgba(0, 102, 204, 0.3);
}
.faq-item.active {
  border-color: rgba(0, 102, 204, 0.45);
  box-shadow: 0 8px 24px rgba(0, 102, 204, 0.08);
}
.faq-question {
  padding: 20px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  user-select: none;
  line-height: 1.5;
}
.faq-question svg {
  flex-shrink: 0;
  color: var(--text-light);
  transition: transform 0.3s ease, color 0.2s ease;
}
.faq-item.active .faq-question svg {
  transform: rotate(180deg);
  color: var(--primary-color);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 28px;
  transition: max-height 0.35s ease, padding 0.35s ease;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-gray);
}
.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 28px 24px 28px;
}

/* ========== Service Responsive ========== */
@media (max-width: 1024px) {
  .service-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .service-section {
    padding: 30px 0 10px;
  }
  .service-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .download-item {
    flex-wrap: wrap;
    padding: 16px;
    gap: 12px;
  }
  .faq-question {
    padding: 16px 18px;
    font-size: 15px;
  }
  .faq-item.active .faq-answer {
    padding: 0 18px 20px 18px;
  }
}