/*!
* Start Bootstrap - Business Frontpage v5.0.9 (https://startbootstrap.com/template/business-frontpage)
* Copyright 2013-2026 Start Bootstrap
* Licensed under MIT (https://github.com/StartBootstrap/startbootstrap-business-frontpage/blob/master/LICENSE)
*/
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: #333333;
  background-color: #ffffff;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

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

#mainNav {
  background: rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  padding: 0;
  height: 80px;
  display: flex;
  align-items: center;
}
#mainNav.scrolled {
  background: rgba(0, 0, 0, 0.9);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}
#mainNav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#mainNav .navbar-brand {
  display: flex;
  align-items: center;
  color: white;
  font-size: 24px;
  font-weight: bold;
  padding: 0;
}
#mainNav .navbar-brand .brand-icon {
  width: 40px;
  height: 40px;
  background: #0066CC;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 12px;
}
#mainNav .navbar-brand .brand-icon i {
  font-size: 22px;
  color: white;
}
#mainNav .navbar-brand .brand-text {
  letter-spacing: 2px;
}
#mainNav .navbar-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
#mainNav .navbar-nav .nav-item .nav-link {
  color: rgba(255, 255, 255, 0.9);
  font-size: 15px;
  padding: 8px 16px;
  position: relative;
  transition: all 0.3s ease;
}
#mainNav .navbar-nav .nav-item .nav-link:hover, #mainNav .navbar-nav .nav-item .nav-link.active {
  color: white;
}
#mainNav .navbar-nav .nav-item .nav-link:hover::after, #mainNav .navbar-nav .nav-item .nav-link.active::after {
  width: 100%;
}
#mainNav .navbar-nav .nav-item .nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: #3388DD;
  transition: width 0.3s ease;
}
#mainNav .navbar-toggler {
  border: none;
  padding: 8px;
}
#mainNav .navbar-toggler:focus {
  box-shadow: none;
}
#mainNav .navbar-toggler .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.header {
  position: relative;
  height: 100vh;
  min-height: 600px;
}

.carousel {
  height: 100%;
}
.carousel .carousel-inner {
  height: 100%;
}
.carousel .carousel-item {
  height: 100%;
}
.carousel .carousel-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
}
.carousel .carousel-bg::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
}
.carousel .carousel-caption {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  text-align: center;
  z-index: 2;
  padding: 0 20px;
}
.carousel .carousel-caption .carousel-title {
  font-size: 48px;
  font-weight: bold;
  color: white;
  margin-bottom: 20px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1s ease-out;
}
.carousel .carousel-caption .carousel-subtitle {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1s ease-out 0.3s both;
}
.carousel .carousel-caption .btn-primary {
  background: #0066CC;
  border: 2px solid #0066CC;
  padding: 14px 40px;
  font-size: 16px;
  font-weight: bold;
  border-radius: 4px;
  animation: fadeInUp 1s ease-out 0.6s both;
  transition: all 0.3s ease;
}
.carousel .carousel-caption .btn-primary:hover {
  background: transparent;
  border-color: white;
}

.carousel-indicators {
  bottom: 40px;
}
.carousel-indicators button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.4);
  margin: 0 6px;
  border: none;
  transition: all 0.3s ease;
}
.carousel-indicators button.active {
  background-color: white;
  width: 35px;
  border-radius: 6px;
}

.carousel-control-prev,
.carousel-control-next {
  width: 55px;
  height: 55px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  transition: all 0.3s ease;
}
.carousel-control-prev .carousel-control-prev-icon,
.carousel-control-prev .carousel-control-next-icon,
.carousel-control-next .carousel-control-prev-icon,
.carousel-control-next .carousel-control-next-icon {
  width: 20px;
  height: 20px;
}

.header:hover .carousel-control-prev,
.header:hover .carousel-control-next {
  opacity: 1;
}

.carousel-control-prev {
  left: 30px;
}

.carousel-control-next {
  right: 30px;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-header .section-title {
  font-size: 36px;
  font-weight: bold;
  color: #333333;
  margin-bottom: 10px;
}
.section-header .section-subtitle {
  font-size: 14px;
  color: #999999;
  text-transform: uppercase;
  letter-spacing: 4px;
  margin-bottom: 15px;
}
.section-header .title-bar {
  width: 60px;
  height: 3px;
  background: #0066CC;
  margin: 0 auto;
}

.section-about {
  background: #ffffff;
}
.section-about .about-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}
.section-about .about-image img {
  width: 100%;
  display: block;
  transition: transform 0.5s ease;
}
.section-about .about-image:hover img {
  transform: scale(1.05);
}
.section-about .about-content {
  padding-left: 40px;
}
.section-about .about-content .about-heading {
  font-size: 24px;
  font-weight: bold;
  color: #0066CC;
  margin-bottom: 25px;
}
.section-about .about-content p {
  color: #666666;
  line-height: 1.8;
  margin-bottom: 20px;
  font-size: 15px;
}
.section-about .about-content .btn-more {
  display: inline-flex;
  align-items: center;
  color: #0066CC;
  font-weight: bold;
  font-size: 15px;
  margin-top: 10px;
}
.section-about .about-content .btn-more i {
  margin-left: 8px;
  transition: transform 0.3s ease;
}
.section-about .about-content .btn-more:hover {
  color: #004499;
}
.section-about .about-content .btn-more:hover i {
  transform: translateX(5px);
}

.section-products {
  background: #f5f7fa;
}
.section-products .product-card {
  background: white;
  padding: 50px 35px;
  text-align: center;
  border-radius: 8px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.06);
  transition: all 0.4s ease;
  height: 100%;
  border-bottom: 3px solid transparent;
  margin-bottom: 30px;
}
.section-products .product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
  border-bottom-color: #0066CC;
}
.section-products .product-card .product-icon {
  font-size: 48px;
  color: #0066CC;
  margin-bottom: 25px;
}
.section-products .product-card .product-name {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 18px;
  color: #333333;
}
.section-products .product-card .product-desc {
  color: #666666;
  margin-bottom: 25px;
  line-height: 1.7;
  font-size: 14px;
}
.section-products .product-card .product-link {
  display: inline-flex;
  align-items: center;
  color: #0066CC;
  font-weight: bold;
  font-size: 14px;
}
.section-products .product-card .product-link i {
  margin-left: 6px;
  transition: transform 0.3s ease;
}
.section-products .product-card .product-link:hover {
  color: #004499;
}
.section-products .product-card .product-link:hover i {
  transform: translateX(5px);
}

.section-cases {
  background: #ffffff;
}
.section-cases .case-card {
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.4s ease;
  margin-bottom: 30px;
}
.section-cases .case-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}
.section-cases .case-card:hover .case-img img {
  transform: scale(1.1);
}
.section-cases .case-card .case-img {
  overflow: hidden;
}
.section-cases .case-card .case-img img {
  width: 100%;
  height: 260px;
  -o-object-fit: cover;
     object-fit: cover;
  transition: transform 0.6s ease;
  display: block;
}
.section-cases .case-card .case-info {
  padding: 20px;
}
.section-cases .case-card .case-info h4 {
  font-size: 18px;
  font-weight: bold;
  color: #333333;
  margin-bottom: 8px;
}
.section-cases .case-card .case-info p {
  color: #666666;
  font-size: 14px;
  margin: 0;
}
.section-cases .btn-more {
  display: inline-flex;
  align-items: center;
  color: #0066CC;
  font-weight: bold;
  font-size: 15px;
}
.section-cases .btn-more i {
  margin-left: 8px;
  transition: transform 0.3s ease;
}
.section-cases .btn-more:hover {
  color: #004499;
}
.section-cases .btn-more:hover i {
  transform: translateX(5px);
}

.section-warranty {
  background: #f5f7fa;
}

/* 桌面端质保表单 */
.section-warranty .warranty-box .warranty-form-desktop {
  background: white;
  padding: 50px;
  border-radius: 8px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.06);
  text-align: center;
}
.section-warranty .warranty-box .warranty-form-desktop h3 {
  font-size: 22px;
  font-weight: bold;
  color: #333333;
  margin-bottom: 10px;
}
.section-warranty .warranty-box .warranty-form-desktop p {
  color: #666666;
  margin-bottom: 30px;
}
.section-warranty .warranty-box .warranty-form-desktop .input-group {
  max-width: 500px;
  margin: 0 auto;
}
.section-warranty .warranty-box .warranty-form-desktop .input-group .form-control {
  height: 50px;
  border: 2px solid #e8e8e8;
  border-right: none;
  padding: 0 20px;
  font-size: 15px;
  color: #000000;
  background-color: #ffffff;
}
.section-warranty .warranty-box .warranty-form-desktop .input-group .form-control:focus {
  border-color: #0066CC;
  box-shadow: none;
}
.section-warranty .warranty-box .warranty-form-desktop .input-group .form-control::-moz-placeholder {
  color: #999999;
}
.section-warranty .warranty-box .warranty-form-desktop .input-group .form-control::placeholder {
  color: #999999;
}
.section-warranty .warranty-box .warranty-form-desktop .input-group .btn-primary {
  height: 50px;
  padding: 0 40px;
  font-size: 16px;
  font-weight: bold;
  background: #0066CC;
  border-color: #0066CC;
}
.section-warranty .warranty-box .warranty-form-desktop .input-group .btn-primary:hover {
  background: #004499;
  border-color: #004499;
}
.section-warranty .warranty-box .warranty-form-desktop .warranty-result {
  margin-top: 30px;
  text-align: left;
}
.section-warranty .warranty-box .warranty-form-desktop .warranty-result .result-card {
  background: #f5f7fa;
  padding: 30px;
  border-radius: 8px;
  border-left: 4px solid #0066CC;
}
.section-warranty .warranty-box .warranty-form-desktop .warranty-result .result-card .result-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid #e8e8e8;
}
.section-warranty .warranty-box .warranty-form-desktop .warranty-result .result-card .result-item:last-child {
  border-bottom: none;
}
.section-warranty .warranty-box .warranty-form-desktop .warranty-result .result-card .result-item span:first-child {
  color: #666666;
}
.section-warranty .warranty-box .warranty-form-desktop .warranty-result .result-card .result-item span:last-child {
  font-weight: bold;
  color: #333333;
}
.section-warranty .warranty-box .warranty-form-desktop .warranty-result .result-empty {
  color: #999999;
  padding: 20px;
}

/* 手机端质保表单 - 默认在 lg 及以上隐藏 */
.section-warranty .warranty-box .warranty-form-mobile {
  display: none !important;
  background: white;
  padding: 25px 15px;
  border-radius: 8px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.06);
  text-align: center;
}
.section-warranty .warranty-box .warranty-form-mobile h3 {
  font-size: 18px;
  font-weight: bold;
  color: #333333;
  margin-bottom: 15px;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-mobile-input {
  height: 46px;
  border: 1px solid #e8e8e8;
  border-radius: 4px;
  padding: 0 15px;
  font-size: 14px;
  color: #000000 !important;
  background-color: #ffffff !important;
  -webkit-text-fill-color: #000000;
  caret-color: #0066CC;
  margin-bottom: 15px;
  width: 100%;
  line-height: 46px;
  position: relative;
  z-index: 2;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-mobile-input::-moz-placeholder {
  color: #999999 !important;
  -webkit-text-fill-color: #999999;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-mobile-input::placeholder {
  color: #999999 !important;
  -webkit-text-fill-color: #999999;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-mobile-input:focus {
  border-color: #0066CC;
  box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.15);
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-mobile-input:focus::-moz-placeholder {
  color: transparent !important;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-mobile-input:focus::placeholder {
  color: transparent !important;
}

.section-warranty .warranty-box .warranty-form-mobile .warranty-mobile-btn {
  width: 100%;
  height: 46px;
  background: #0066CC;
  border: none;
  font-size: 16px;
  font-weight: bold;
  border-radius: 4px;
  color: #ffffff;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-mobile-btn:hover {
  background: #004499;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-result {
  margin-top: 20px;
  text-align: left;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-result .result-card {
  background: #f5f7fa;
  padding: 20px;
  border-radius: 8px;
  border-left: 4px solid #0066CC;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-result .result-card .result-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid #e8e8e8;
  font-size: 14px;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-result .result-card .result-item:last-child {
  border-bottom: none;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-result .result-card .result-item span:first-child {
  color: #666666;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-result .result-card .result-item span:last-child {
  font-weight: bold;
  color: #333333;
}
.section-warranty .warranty-box .warranty-form-mobile .warranty-result .result-empty {
  color: #999999;
  padding: 15px;
  font-size: 14px;
}

.section-news {
  background: #ffffff;
}
.section-news .news-list {
  max-width: 850px;
  margin: 0 auto;
}
.section-news .news-list .news-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid #e8e8e8;
  color: #333333;
  transition: all 0.3s ease;
}
.section-news .news-list .news-item:hover {
  color: #0066CC;
  padding-left: 15px;
}
.section-news .news-list .news-item .news-title {
  flex: 1;
  font-weight: 500;
  font-size: 15px;
}
.section-news .news-list .news-item .news-date {
  color: #999999;
  margin-left: 20px;
  white-space: nowrap;
  font-size: 14px;
}

.section-contact {
  background: #f5f7fa;
}
.section-contact .contact-info .contact-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 30px;
}
.section-contact .contact-info .contact-item i {
  font-size: 22px;
  color: #0066CC;
  margin-right: 18px;
  margin-top: 3px;
  min-width: 35px;
  text-align: center;
}
.section-contact .contact-info .contact-item .contact-detail h4 {
  font-weight: bold;
  margin-bottom: 6px;
  color: #333333;
  font-size: 16px;
}
.section-contact .contact-info .contact-item .contact-detail p {
  margin: 0;
  color: #666666;
  font-size: 14px;
}
.section-contact .contact-form-wrapper {
  background: white;
  padding: 40px;
  border-radius: 8px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.06);
}
.section-contact .contact-form-wrapper h3 {
  font-size: 22px;
  font-weight: bold;
  color: #333333;
  margin-bottom: 25px;
  text-align: center;
}
.section-contact .contact-form-wrapper .form-control {
  height: 50px;
  border: 1px solid #e8e8e8;
  border-radius: 4px;
  padding: 0 18px;
  font-size: 14px;
  margin-bottom: 15px;
  transition: all 0.3s ease;
}
.section-contact .contact-form-wrapper .form-control:focus {
  border-color: #0066CC;
  box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.15);
}
.section-contact .contact-form-wrapper .form-control::-moz-placeholder {
  color: #999999;
}
.section-contact .contact-form-wrapper .form-control::placeholder {
  color: #999999;
}
.section-contact .contact-form-wrapper .form-control.textarea {
  height: auto;
  padding: 15px 18px;
}
.section-contact .contact-form-wrapper textarea.form-control {
  height: auto;
  padding: 15px 18px;
}
.section-contact .contact-form-wrapper .btn-primary {
  width: 100%;
  height: 50px;
  background: #0066CC;
  border: none;
  font-size: 16px;
  font-weight: bold;
  border-radius: 4px;
  transition: all 0.3s ease;
}
.section-contact .contact-form-wrapper .btn-primary:hover {
  background: #004499;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 102, 204, 0.3);
}

.footer {
  padding: 70px 0 0;
  background: #1a1a2e;
  color: white;
}
.footer .footer-brand h3 {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
}
.footer .footer-brand h3 i {
  color: #3388DD;
  font-size: 28px;
  margin-right: 12px;
}
.footer .footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  font-size: 14px;
}
.footer .footer-links h4,
.footer .footer-contact h4 {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 25px;
  color: white;
  position: relative;
  padding-bottom: 12px;
}
.footer .footer-links h4::after,
.footer .footer-contact h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: #0066CC;
}
.footer .footer-links ul,
.footer .footer-contact ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer .footer-links ul li,
.footer .footer-contact ul li {
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  display: flex;
  align-items: center;
}
.footer .footer-links ul li a,
.footer .footer-contact ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: all 0.3s ease;
}
.footer .footer-links ul li a:hover,
.footer .footer-contact ul li a:hover {
  color: white;
  padding-left: 8px;
}
.footer .footer-links ul li i,
.footer .footer-contact ul li i {
  margin-right: 10px;
  color: #3388DD;
  font-size: 16px;
}
.footer .footer-bottom {
  margin-top: 50px;
  padding: 25px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}
.footer .footer-bottom p {
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

@media (max-width: 991px) {
  #mainNav {
    height: auto;
    padding: 10px 0;
  }
  #mainNav .navbar-collapse {
    background: rgba(0, 0, 0, 0.95);
    padding: 20px;
    border-radius: 8px;
    margin-top: 10px;
  }
  #mainNav .navbar-nav .nav-item .nav-link {
    padding: 10px 0;
  }
  #mainNav .navbar-nav .nav-item .nav-link::after {
    left: 0;
    transform: none;
  }
  .carousel-caption .carousel-title {
    font-size: 36px;
  }
  .carousel-caption .carousel-subtitle {
    font-size: 16px;
  }
  .section-about .about-content {
    padding-left: 0;
    margin-top: 40px;
  }
  section {
    padding: 60px 0;
  }
  .section-header {
    margin-bottom: 40px;
  }
  .section-header .section-title {
    font-size: 28px;
  }
}
@media (max-width: 767px) {
  .carousel-caption .carousel-title {
    font-size: 28px;
  }
  .carousel-caption .carousel-subtitle {
    font-size: 14px;
    margin-bottom: 30px;
  }
  .carousel-caption .btn-primary {
    padding: 12px 30px;
    font-size: 14px;
  }
  .carousel-control-prev,
  .carousel-control-next {
    display: none;
  }
  .section-warranty .warranty-form-mobile {
    padding: 25px 15px;
  }
  .section-contact .contact-form-wrapper {
    padding: 30px 20px;
    margin-top: 40px;
  }
  .footer .footer-brand,
  .footer .footer-links,
  .footer .footer-contact {
    margin-bottom: 40px;
  }
}
@media (max-width: 991.98px) {
  .carousel-caption .carousel-title {
    font-size: 20px;
    margin-bottom: 10px;
  }
  .carousel-caption .carousel-subtitle {
    font-size: 13px;
    margin-bottom: 20px;
  }
  .carousel-caption .btn-primary {
    padding: 10px 24px;
    font-size: 13px;
  }
  .section-header .section-title {
    font-size: 22px;
  }
  .section-header .section-subtitle {
    font-size: 12px;
    letter-spacing: 2px;
  }
  .news-item {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 0;
  }
  .news-item .news-date {
    margin-left: 0;
    margin-top: 5px;
    font-size: 12px;
  }
  .news-item .news-title {
    font-size: 14px;
  }
  .product-card {
    padding: 35px 25px;
  }
  .product-card .product-icon {
    font-size: 36px;
    margin-bottom: 18px;
  }
  .product-card .product-name {
    font-size: 18px;
  }
  .product-card .product-desc {
    font-size: 13px;
  }
  .case-card .case-img img {
    height: 200px;
  }
  .case-card .case-info {
    padding: 15px;
  }
  .case-card .case-info h4 {
    font-size: 16px;
  }
  .case-card .case-info p {
    font-size: 13px;
  }
  .about-content .about-heading {
    font-size: 18px;
  }
  .about-content p {
    font-size: 13px;
  }
  .section-warranty .warranty-box .warranty-form-desktop {
    display: none !important;
  }
  .section-warranty .warranty-box .warranty-form-mobile {
    display: block !important;
  }
  .contact-form-wrapper {
    padding: 25px 15px;
  }
  .contact-form-wrapper h3 {
    font-size: 18px;
  }
  .contact-form-wrapper .form-control {
    height: 46px;
    font-size: 13px;
  }
  .contact-info .contact-item {
    margin-bottom: 20px;
  }
  .contact-info .contact-item i {
    font-size: 18px;
  }
  .contact-info .contact-item .contact-detail h4 {
    font-size: 14px;
  }
  .contact-info .contact-item .contact-detail p {
    font-size: 13px;
  }
  .footer {
    padding: 50px 0 0;
  }
  .footer .footer-brand,
  .footer .footer-links,
  .footer .footer-contact {
    margin-bottom: 30px;
  }
  .footer .footer-brand h3, .footer .footer-brand h4,
  .footer .footer-links h3,
  .footer .footer-links h4,
  .footer .footer-contact h3,
  .footer .footer-contact h4 {
    font-size: 16px;
  }
  .footer .footer-brand p, .footer .footer-brand li, .footer .footer-brand a,
  .footer .footer-links p,
  .footer .footer-links li,
  .footer .footer-links a,
  .footer .footer-contact p,
  .footer .footer-contact li,
  .footer .footer-contact a {
    font-size: 13px;
  }
  .footer .footer-bottom {
    margin-top: 30px;
    padding: 20px 0;
  }
  .footer .footer-bottom p {
    font-size: 12px;
  }
  .navbar-brand {
    font-size: 18px;
  }
  .navbar-brand .brand-icon {
    width: 32px;
    height: 32px;
  }
  .navbar-brand .brand-icon i {
    font-size: 18px;
  }
}
@media (max-width: 767px) {
  .modal-dialog {
    margin: 10px;
  }
  .modal-content {
    border-radius: 12px;
  }
  .modal-header {
    padding: 15px 20px;
  }
  .modal-header .modal-title {
    font-size: 16px;
  }
  .modal-body {
    padding: 20px;
    font-size: 14px;
  }
  .modal-footer {
    padding: 15px 20px;
  }
  .modal-footer .btn {
    padding: 8px 20px;
    font-size: 14px;
  }
}
@media (hover: none) {
  .carousel-control-prev,
  .carousel-control-next {
    opacity: 1 !important;
  }
  .case-card:hover,
  .product-card:hover {
    transform: none;
  }
}
.warranty-result .result-card {
  word-break: break-all;
}

img[loading=lazy] {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}
img[loading=lazy].loaded {
  animation: none;
  background: none;
}

/* 语言切换按钮样式 */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 32px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 4px;
  color: white;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
  margin-left: 8px;
}
.lang-switcher:hover {
  background: white;
  color: #0066CC;
  border-color: white;
}
#mainNav.scrolled .lang-switcher {
  border-color: rgba(255, 255, 255, 0.8);
}
#mainNav.scrolled .lang-switcher:hover {
  background: #0066CC;
  color: white;
  border-color: #0066CC;
}