/* 全局重置与基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f5f5f5;
  color: #222;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

body.dark-mode {
  background: #121212;
  color: #e0e0e0;
}

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

/* 头部导航 */
header {
  background: #1a1a2e;
  color: white;
  padding: 15px 20px;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
}

.logo a {
  display: flex;
  align-items: center;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 20px;
}

.main-nav a {
  color: white;
  text-decoration: none;
  font-size: 15px;
  transition: color 0.3s, transform 0.2s;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #ff6b35;
  transition: width 0.3s;
}

.main-nav a:hover {
  color: #ff6b35;
  transform: translateY(-1px);
}

.main-nav a:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.header-actions button {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: 5px;
  border-radius: 5px;
  transition: background 0.3s, transform 0.2s;
}

.header-actions button:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.1);
}

.menu-toggle {
  display: none;
}

.search-bar {
  display: none;
  padding: 10px 20px;
  background: #1a1a2e;
  max-width: 1200px;
  margin: 0 auto;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.search-bar.active {
  display: flex;
  gap: 10px;
}

.search-bar input {
  flex: 1;
  padding: 8px 12px;
  border: none;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transition: background 0.3s;
}

.search-bar input:focus {
  background: rgba(255, 255, 255, 0.2);
  outline: none;
}

.search-bar button {
  padding: 8px 16px;
  background: #ff6b35;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.search-bar button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
}

/* 面包屑导航 */
.breadcrumb {
  background: #e0e0e0;
  padding: 10px 20px;
  font-size: 14px;
  transition: background 0.3s;
}

.dark-mode .breadcrumb {
  background: #333;
  color: #ccc;
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  gap: 10px;
  max-width: 1200px;
  margin: 0 auto;
}

.breadcrumb a {
  color: #1a1a2e;
  text-decoration: none;
  transition: color 0.3s;
}

.dark-mode .breadcrumb a {
  color: #ff6b35;
}

.breadcrumb a:hover {
  color: #ff6b35;
}

.breadcrumb li:not(:last-child)::after {
  content: '›';
  margin-left: 5px;
  color: #666;
}

/* Hero Banner */
.hero {
  position: relative;
  overflow: hidden;
  padding: 60px 20px;
  background: linear-gradient(135deg, #1a1a2e 0%, #0f3460 50%, #533483 100%);
  color: white;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.1) 0%, transparent 60%);
  animation: heroGlow 8s ease-in-out infinite;
}

@keyframes heroGlow {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(10%, 10%); }
}

.hero-content {
  max-width: 800px;
  margin: 0 auto 40px;
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: 2.2em;
  margin-bottom: 20px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 1.1em;
  margin-bottom: 30px;
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: #ff6b35;
  color: white;
  padding: 12px 30px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  padding: 12px 30px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: background 0.3s, transform 0.2s;
  backdrop-filter: blur(5px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.hero-carousel {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.carousel-slide {
  display: none;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

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

.carousel-slide svg {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.carousel-controls {
  position: absolute;
  top: 50%;
  width: 100%;
  display: flex;
  justify-content: space-between;
  transform: translateY(-50%);
  padding: 0 20px;
  z-index: 10;
}

.carousel-controls button {
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  padding: 10px 15px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  transition: background 0.3s, transform 0.2s;
  backdrop-filter: blur(5px);
}

.carousel-controls button:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: scale(1.1);
}

/* 通用区块样式 */
.section {
  padding: 60px 20px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section h2 {
  text-align: center;
  font-size: 2em;
  margin-bottom: 40px;
  color: #1a1a2e;
  position: relative;
}

.section h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: #ff6b35;
  margin: 15px auto 0;
  border-radius: 2px;
}

.dark-mode .section h2 {
  color: #ff6b35;
}

.dark-mode .section h2::after {
  background: #ff6b35;
}

/* 品牌介绍 */
.brand-content {
  display: flex;
  gap: 40px;
  align-items: center;
  flex-wrap: wrap;
}

.brand-text {
  flex: 1;
  min-width: 280px;
}

.brand-text p {
  margin-bottom: 15px;
  line-height: 1.8;
}

.brand-image {
  flex: 0 0 400px;
}

.brand-image svg {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s;
}

.brand-image svg:hover {
  transform: scale(1.02);
}

.brand-stats {
  display: flex;
  justify-content: space-around;
  margin-top: 40px;
  flex-wrap: wrap;
  gap: 20px;
}

.stat-item {
  text-align: center;
  padding: 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  backdrop-filter: blur(10px);
  transition: transform 0.3s;
}

.stat-item:hover {
  transform: translateY(-5px);
}

.stat-number {
  font-size: 2.5em;
  font-weight: bold;
  color: #ff6b35;
}

.dark-mode .stat-number {
  color: #ff6b35;
}

/* 企业文化 */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
}

.culture-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  backdrop-filter: blur(10px);
}

.dark-mode .culture-card {
  background: rgba(30, 30, 30, 0.9);
}

.culture-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.culture-card svg {
  margin-bottom: 15px;
  transition: transform 0.3s;
}

.culture-card:hover svg {
  transform: rotate(10deg) scale(1.1);
}

/* 团队介绍 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.team-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  backdrop-filter: blur(10px);
}

.dark-mode .team-card {
  background: rgba(30, 30, 30, 0.9);
}

.team-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.team-card svg {
  margin-bottom: 15px;
  transition: transform 0.3s;
}

.team-card:hover svg {
  transform: scale(1.1);
}

.team-extra {
  margin-top: 30px;
  text-align: center;
  padding: 20px;
  background: rgba(255, 107, 53, 0.1);
  border-radius: 15px;
}

/* 产品中心 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.product-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  backdrop-filter: blur(10px);
}

.dark-mode .product-card {
  background: rgba(30, 30, 30, 0.9);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.product-card svg {
  width: 100%;
  height: auto;
  border-radius: 15px;
  margin-bottom: 15px;
  transition: transform 0.3s;
}

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

.btn-link {
  color: #ff6b35;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s, padding-left 0.3s;
  position: relative;
}

.btn-link::before {
  content: '→';
  position: absolute;
  left: -20px;
  opacity: 0;
  transition: opacity 0.3s, left 0.3s;
}

.btn-link:hover {
  color: #e55a2b;
  padding-left: 20px;
}

.btn-link:hover::before {
  opacity: 1;
  left: 0;
}

/* 产品优势 */
.advantages-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
}

.advantage-item {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  backdrop-filter: blur(10px);
}

.dark-mode .advantage-item {
  background: rgba(30, 30, 30, 0.9);
}

.advantage-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.advantage-item svg {
  transition: transform 0.3s;
}

.advantage-item:hover svg {
  transform: rotate(360deg);
}

/* 服务支持 */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
}

.service-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  backdrop-filter: blur(10px);
}

.dark-mode .service-card {
  background: rgba(30, 30, 30, 0.9);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.service-card svg {
  transition: transform 0.3s;
}

.service-card:hover svg {
  transform: scale(1.2) rotate(-10deg);
}

/* 核心优势 */
.core-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
}

.core-item {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  backdrop-filter: blur(10px);
}

.dark-mode .core-item {
  background: rgba(30, 30, 30, 0.9);
}

.core-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* 解决方案 */
.solutions-list article {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  margin-bottom: 20px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
  backdrop-filter: blur(10px);
}

.dark-mode .solutions-list article {
  background: rgba(30, 30, 30, 0.9);
}

.solutions-list article:hover {
  transform: translateX(5px);
}

/* 应用行业 */
.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  justify-content: center;
}

.industry-tags span {
  background: linear-gradient(135deg, #ff6b35, #e55a2b);
  color: white;
  padding: 10px 25px;
  border-radius: 30px;
  font-size: 1em;
  transition: transform 0.3s, box-shadow 0.3s;
  cursor: default;
}

.industry-tags span:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(255, 107, 53, 0.4);
}

/* 成功案例 */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.case-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  backdrop-filter: blur(10px);
}

.dark-mode .case-card {
  background: rgba(30, 30, 30, 0.9);
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.case-card svg {
  width: 100%;
  height: auto;
  border-radius: 15px;
  margin-bottom: 15px;
  transition: transform 0.3s;
}

.case-card:hover svg {
  transform: scale(1.03);
}

/* 客户评价 */
.testimonial-list blockquote {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  margin-bottom: 20px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border-left: 5px solid #ff6b35;
  transition: transform 0.3s, box-shadow 0.3s;
  backdrop-filter: blur(10px);
}

.dark-mode .testimonial-list blockquote {
  background: rgba(30, 30, 30, 0.9);
}

.testimonial-list blockquote:hover {
  transform: translateX(5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.testimonial-list footer {
  text-align: right;
  font-style: italic;
  color: #666;
}

/* 新闻资讯 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.news-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  backdrop-filter: blur(10px);
}

.dark-mode .news-card {
  background: rgba(30, 30, 30, 0.9);
}

.news-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.news-card svg {
  width: 100%;
  height: auto;
  border-radius: 15px;
  margin-bottom: 15px;
  transition: transform 0.3s;
}

.news-card:hover svg {
  transform: scale(1.03);
}

.news-date {
  color: #888;
  font-size: 0.9em;
  margin-bottom: 10px;
}

/* 最新文章与推荐 */
.extra-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
}

.extra-col {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}

.dark-mode .extra-col {
  background: rgba(30, 30, 30, 0.9);
}

.extra-col ul {
  list-style: none;
}

.extra-col li {
  margin-bottom: 10px;
}

.extra-col a {
  color: #1a1a2e;
  text-decoration: none;
  transition: color 0.3s, padding-left 0.3s;
}

.dark-mode .extra-col a {
  color: #e0e0e0;
}

.extra-col a:hover {
  color: #ff6b35;
  padding-left: 5px;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 10px;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  padding: 15px 20px;
  border-radius: 10px;
  font-size: 1em;
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  transition: background 0.3s, transform 0.2s;
  backdrop-filter: blur(10px);
}

.dark-mode .faq-question {
  background: rgba(30, 30, 30, 0.9);
  color: #e0e0e0;
}

.faq-question:hover {
  background: #f0f0f0;
  transform: translateX(3px);
}

.dark-mode .faq-question:hover {
  background: #333;
}

.faq-answer {
  display: none;
  padding: 15px 20px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 0 0 10px 10px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  animation: slideDown 0.3s ease;
  backdrop-filter: blur(10px);
}

.dark-mode .faq-answer {
  background: rgba(30, 30, 30, 0.9);
}

.faq-answer.active {
  display: block;
}

/* HowTo */
.howto-content {
  max-width: 800px;
  margin: 0 auto;
}

.howto-content h3 {
  margin-top: 30px;
  color: #ff6b35;
}

.howto-content ul, .howto-content ol {
  margin-left: 20px;
  margin-bottom: 20px;
}

.howto-content li {
  margin-bottom: 10px;
  line-height: 1.8;
}

/* 联系我们 */
.contact {
  text-align: center;
}

.contact-info p {
  margin-bottom: 10px;
  font-size: 1.1em;
}

.contact-qr {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.contact-qr div {
  text-align: center;
  transition: transform 0.3s;
}

.contact-qr div:hover {
  transform: translateY(-5px);
}

.contact-qr svg {
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* 法律声明 */
.legal-content h3 {
  color: #ff6b35;
  margin-top: 30px;
}

.legal-content p {
  margin-bottom: 15px;
  line-height: 1.8;
}

/* 底部链接 */
.footer-links {
  background: #1a1a2e;
  color: white;
}

.footer-links h3 {
  color: #ff6b35;
}

.footer-links a {
  color: #ccc;
  text-decoration: none;
  transition: color 0.3s, padding-left 0.3s;
}

.footer-links a:hover {
  color: white;
  padding-left: 3px;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

/* 页脚 */
footer {
  background: #0f0f1a;
  color: #aaa;
  text-align: center;
  padding: 30px 20px;
}

footer p {
  margin-bottom: 10px;
  font-size: 0.9em;
}

#backToTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: #ff6b35;
  color: white;
  border: none;
  padding: 12px 16px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  display: none;
  z-index: 1000;
  transition: opacity 0.3s, transform 0.3s;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
}

#backToTop:hover {
  opacity: 0.9;
  transform: translateY(-3px);
}

/* 移动菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 2000;
  padding: 80px 20px;
  backdrop-filter: blur(10px);
  animation: fadeIn 0.3s ease;
}

.mobile-menu.active {
  display: block;
}

.mobile-menu ul {
  list-style: none;
  text-align: center;
}

.mobile-menu li {
  margin-bottom: 20px;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.mobile-menu a {
  color: white;
  text-decoration: none;
  font-size: 1.5em;
  transition: color 0.3s;
}

.mobile-menu a:hover {
  color: #ff6b35;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .hero h1 {
    font-size: 1.5em;
  }

  .brand-image {
    flex: 0 0 100%;
  }

  .brand-content {
    flex-direction: column;
  }

  .carousel-controls button {
    padding: 5px 10px;
    font-size: 16px;
  }

  .section {
    padding: 40px 15px;
  }

  .section h2 {
    font-size: 1.6em;
  }

  .stat-number {
    font-size: 2em;
  }

  .culture-grid,
  .team-grid,
  .products-grid,
  .advantages-list,
  .services-grid,
  .core-grid,
  .cases-grid,
  .news-grid,
  .extra-grid {
    grid-template-columns: 1fr;
  }

  .footer-links ul {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.2em;
  }

  .hero p {
    font-size: 1em;
  }

  .btn-primary, .btn-secondary {
    padding: 10px 20px;
    font-size: 0.9em;
  }

  .section h2 {
    font-size: 1.4em;
  }

  .header-inner {
    padding: 0 10px;
  }

  .contact-qr {
    gap: 20px;
  }

  #backToTop {
    bottom: 20px;
    right: 20px;
    padding: 10px 14px;
    font-size: 16px;
  }
}

/* 滚动动画入口 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 暗色模式全局调整 */
.dark-mode .culture-card,
.dark-mode .team-card,
.dark-mode .product-card,
.dark-mode .advantage-item,
.dark-mode .service-card,
.dark-mode .core-item,
.dark-mode .solutions-list article,
.dark-mode .case-card,
.dark-mode .testimonial-list blockquote,
.dark-mode .news-card,
.dark-mode .extra-col,
.dark-mode .faq-question,
.dark-mode .faq-answer {
  background: rgba(30, 30, 30, 0.9);
  color: #e0e0e0;
}

.dark-mode .stat-item {
  background: rgba(255, 255, 255, 0.05);
}

.dark-mode .team-extra {
  background: rgba(255, 107, 53, 0.15);
}

/* 毛玻璃效果通用类 */
.glass {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.dark-mode .glass {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}