/* 思源黑体配置 */
@font-face {
  font-family: 'Source Han Sans CN';
  src: url('../fonts/SourceHanSansCN-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Source Han Sans CN';
  src: url('../fonts/NotoSansCJK-Bold-6.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft Yahei", sans-serif;
}

*::before,
*::after {
  box-sizing: border-box;
}

:focus-visible {
  outline: none;
}

body {
  line-height: 1.6;
  color: #333;
  scroll-behavior: smooth;
}

.header {
  background: linear-gradient(135deg, #0d3a8a 0%, #1a4a9e 100%);
  padding: 15px 0;
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 9999;
  box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.logo-wrapper:hover {
  background: rgba(255,255,255,0.05);
}

.logo-image {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo-wrapper:hover .logo-image {
  transform: scale(1.05);
}

.logo-text {
  font-size: 16px;
  font-weight: 600;
  color: white;
  line-height: 1.2;
  letter-spacing: 1.5px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.15);
  transition: all 0.3s ease;
  font-family: 'Source Han Sans CN', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Hiragino Sans GB', sans-serif;
}

.logo-wrapper:hover .logo-text {
  letter-spacing: 3px;
}

.nav-menu ul {
  display: flex;
  list-style: none;
  gap: 25px;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  color: white;
  text-decoration: none;
  font-size: 15px;
  padding: 8px 15px;
  border-radius: 4px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
  position: relative;
}

.nav-menu a:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.nav-menu a:focus {
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.4);
}

.nav-menu a:active {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(0);
}

.nav-menu a.active {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border-bottom: 2px solid rgba(255, 255, 255, 0.6);
}

.nav-menu a.active:hover {
  background: rgba(255, 255, 255, 0.2);
}

.mobile-menu-btn {
  display: none;
  cursor: pointer;
  font-size: 24px;
  color: white;
  padding: 8px;
  border-radius: 4px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
  background: transparent;
  border: none;
}

.mobile-menu-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: scale(1.05);
}

.mobile-menu-btn:focus {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.4);
}

.mobile-menu-btn:active {
  transform: scale(0.95);
  background: rgba(255, 255, 255, 0.2);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: #1f1f1f;
  z-index: 998;
  flex-direction: column;
  padding: 20px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.mobile-menu a {
  color: white;
  text-decoration: none;
  padding: 15px 20px;
  font-size: 16px;
  border-bottom: 1px solid #333;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 4px;
  outline: none;
}

.mobile-menu a:hover {
  background: rgba(255,255,255,0.1);
  transform: translateX(5px);
  padding-left: 25px;
}

.mobile-menu a:focus {
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 0 2px rgba(13, 58, 138, 0.5);
}

.mobile-menu a:active {
  background: rgba(255, 255, 255, 0.2);
  transform: translateX(0);
}

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

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: #0d3a8a;
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
  box-shadow: 0 4px 15px rgba(13, 58, 138, 0.4);
  outline: none;
}

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

.back-to-top:hover {
  background: #1a4a9e;
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(13, 58, 138, 0.5);
}

.back-to-top:focus {
  box-shadow: 0 0 0 3px rgba(13, 58, 138, 0.5), 0 4px 15px rgba(13, 58, 138, 0.4);
}

.back-to-top:active {
  transform: translateY(-2px) scale(0.95);
  box-shadow: 0 4px 15px rgba(13, 58, 138, 0.4);
}

.carousel-container {
  width: 100%;
  height: 100vh;
  min-height: 700px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, #0a2a6a 0%, #1a4a9e 50%, #0a2a6a 100%);
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
}

.carousel-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  background-color: #000;
}

.carousel-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(10, 42, 106, 0.5) 0%, rgba(26, 74, 158, 0.3) 50%, rgba(10, 42, 106, 0.5) 100%);
  z-index: 1;
}

.carousel {
  display: flex;
  transition: opacity 0.4s ease, transform 0.6s ease-in-out;
  height: 100%;
  position: relative;
  z-index: 2;
  opacity: 1;
}

.carousel-item {
  min-width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  color: white;
  padding-right: 15%;
  padding-top: 100px;
  overflow: hidden;
}

.carousel-item::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -30%;
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 60%);
  animation: float 10s ease-in-out infinite reverse;
  z-index: 2;
}

.carousel-decoration {
  position: absolute;
  z-index: 2;
}

.carousel-decoration.line-1 {
  top: 20%;
  left: 10%;
  width: 2px;
  height: 120px;
  background: linear-gradient(to bottom, rgba(255,215,0,0.5), transparent);
  animation: lineGrow 2s ease-out 0.3s both;
}

.carousel-decoration.line-2 {
  top: 40%;
  left: 12%;
  width: 80px;
  height: 2px;
  background: linear-gradient(to right, rgba(255,215,0,0.5), transparent);
  animation: lineGrowX 1.5s ease-out 0.5s both;
}

.carousel-decoration.circle-1 {
  top: 30%;
  right: 20%;
  width: 6px;
  height: 6px;
  background: rgba(255,215,0,0.7);
  border-radius: 50%;
  animation: circleAppear 1s ease-out 0.7s both;
}

.carousel-decoration.circle-2 {
  bottom: 35%;
  right: 25%;
  width: 4px;
  height: 4px;
  background: rgba(255,215,0,0.5);
  border-radius: 50%;
  animation: circleAppear 1s ease-out 0.9s both;
}

.carousel-content {
  text-align: left;
  z-index: 2;
  max-width: 700px;
  padding: 0 40px;
}

.carousel-number {
  font-size: 200px;
  font-weight: bold;
  opacity: 0.12;
  position: absolute;
  left: 5%;
  top: 50%;
  transform: translateY(-50%);
  animation: pulse 4s ease-in-out infinite;
  font-family: 'Arial Black', 'Helvetica Neue', sans-serif;
  letter-spacing: -15px;
  line-height: 0.8;
  z-index: 2;
}

.carousel-title {
  font-size: 52px;
  font-weight: bold;
  margin-bottom: 30px;
  animation: titleIn 0.9s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3), 0 2px 4px rgba(0,0,0,0.2);
  letter-spacing: 3px;
  position: relative;
  opacity: 0;
}

.carousel-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 0;
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, rgba(255,255,255,0.8), rgba(255,255,255,0.2));
  animation: lineSlide 1.2s ease-out 0.6s both;
}

.carousel-subtitle {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 4px;
  opacity: 0.8;
  margin-bottom: 15px;
  animation: subtitleIn 0.7s ease-out 0.2s both;
  font-weight: 500;
}

.carousel-desc {
  font-size: 19px;
  line-height: 2;
  opacity: 0.95;
  animation: descIn 1s ease-out 0.5s both;
  text-shadow: 0 2px 10px rgba(0,0,0,0.2);
  font-weight: 300;
  max-width: 500px;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateX(0) translateY(0) scale(1);
  }
  33% {
    transform: translateX(10%) translateY(-5%) scale(1.05);
  }
  66% {
    transform: translateX(-5%) translateY(10%) scale(0.95);
  }
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.15;
    transform: translateY(-50%) scale(1);
  }
  50% {
    opacity: 0.25;
    transform: translateY(-50%) scale(1.05);
  }
}

@keyframes slideIn {
  from {
    width: 0;
    opacity: 0;
  }
  to {
    width: 80px;
    opacity: 1;
  }
}

@keyframes titleIn {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes descIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 0.95;
    transform: translateY(0);
  }
}

@keyframes subtitleIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 0.8;
    transform: translateX(0);
  }
}

@keyframes lineSlide {
  from {
    width: 0;
    opacity: 0;
  }
  to {
    width: 100px;
    opacity: 1;
  }
}

@keyframes lineGrow {
  from {
    height: 0;
    opacity: 0;
  }
  to {
    height: 120px;
    opacity: 1;
  }
}

@keyframes lineGrowX {
  from {
    width: 0;
    opacity: 0;
  }
  to {
    width: 80px;
    opacity: 1;
  }
}

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

.carousel-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255,255,255,0.3);
  color: white;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  font-size: 28px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.2);
  outline: none;
}

.carousel-control:hover {
  background: rgba(255,255,255,0.2);
  transform: translateY(-50%) scale(1.05);
  border-color: rgba(255,255,255,0.5);
  box-shadow: 0 6px 25px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.25);
}

.carousel-control:focus {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5), 0 6px 25px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.25);
  border-color: rgba(255, 255, 255, 0.6);
}

.carousel-control:active {
  transform: translateY(-50%) scale(0.98);
  background: rgba(255,255,255,0.25);
}

.carousel-control.prev {
  left: 50px;
}

.carousel-control.next {
  right: 50px;
}

.carousel-indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 20px;
  z-index: 10;
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid rgba(255,255,255,0.4);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  outline: none;
}

.indicator:hover {
  background: rgba(255,255,255,0.45);
  transform: scale(1.15);
  box-shadow: 0 3px 12px rgba(0,0,0,0.25);
}

.indicator:focus {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5), 0 3px 12px rgba(0,0,0,0.25);
  transform: scale(1.1);
}

.indicator:active {
  transform: scale(1.05);
  background: rgba(255,255,255,0.5);
}

.indicator.active {
  background: white;
  transform: scale(1.25);
}

.about-section {
  padding: 120px 20px 100px;
  background: #f5f5f5;
}

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

.section-title {
  text-align: center;
  font-size: 36px;
  color: #333;
  margin-bottom: 15px;
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: #0d3a8a;
}

.section-subtitle {
  text-align: center;
  color: #666;
  margin-top: 25px;
  margin-bottom: 50px;
  font-size: 16px;
}

/* 统一卡片样式 */
.base-card {
  border-radius: 12px;
  padding: 35px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.base-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 35px rgba(13, 58, 138, 0.15);
}

.about-content {
  font-size: 16px;
  line-height: 2.2;
  color: #555;
  text-align: justify;
  background: white;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.about-content p {
  margin-bottom: 20px;
  text-indent: 2em;
}

.services-section {
  padding: 120px 20px 100px;
  background: white;
}

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

.service-card {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 35px;
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  cursor: default;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 35px rgba(13, 58, 138, 0.15);
  border-color: #0d3a8a;
}

.service-card:hover .service-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 8px 25px rgba(13, 58, 138, 0.4);
}

.service-card:hover .service-title {
  color: #0d3a8a;
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, #0d3a8a 0%, #1a4a9e 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 32px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 15px rgba(13, 58, 138, 0.3);
}

.service-title {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 12px;
  color: #333;
  transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-desc {
  font-size: 14px;
  color: #666;
  line-height: 1.8;
  margin: 0;
  text-align: center;
}

.cert-section {
  padding: 120px 20px 100px;
  background: linear-gradient(135deg, #0d3a8a 0%, #1a4a9e 100%);
}

.cert-section .section-title {
  color: white;
}

.cert-section .section-title::after {
  background: rgba(255,255,255,0.6);
}

.cert-section .section-subtitle {
  color: rgba(255,255,255,0.8);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.cert-card {
  background: white;
  border-radius: 12px;
  padding: 35px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: default;
}

.cert-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 35px rgba(13, 58, 138, 0.15);
}

.cert-card:hover .cert-icon {
  transform: scale(1.15) rotate(10deg);
  filter: drop-shadow(0 8px 20px rgba(212, 175, 55, 0.4));
}

.cert-card:hover .cert-title {
  color: #0d3a8a;
}

.cert-icon {
  font-size: 48px;
  color: #d4af37;
  margin-bottom: 15px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-block;
}

.cert-title {
  font-size: 18px;
  font-weight: bold;
  color: #333;
  margin-bottom: 10px;
  transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.cert-level {
  font-size: 16px;
  color: #0d3a8a;
  font-weight: bold;
  margin-bottom: 8px;
}

.cert-status {
  font-size: 13px;
  color: #d4af37;
  background: #fff9e6;
  padding: 4px 12px;
  border-radius: 12px;
  display: inline-block;
}

.footer {
  background: #1a1a1a;
  color: white;
  padding: 60px 20px 40px;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  padding-bottom: 50px;
  border-bottom: 1px solid #333;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo-image {
  height: 36px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-logo span {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.footer-desc {
  color: #999;
  font-size: 14px;
  line-height: 1.8;
  margin: 0;
  max-width: 380px;
}

.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-col-title {
  font-size: 16px;
  color: #fff;
  margin: 0;
  font-weight: 600;
  position: relative;
  padding-left: 16px;
}

.footer-col-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 16px;
  background: linear-gradient(135deg, #0d3a8a 0%, #1a4a9e 100%);
  border-radius: 2px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 20px;
}

.footer-links a {
  color: #999;
  text-decoration: none;
  font-size: 14px;
  transition: all 0.3s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: #fff;
  transform: translateX(3px);
}

.footer-copyright {
  padding-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.footer-copyright-top {
  text-align: center;
}

.footer-copyright-top p {
  color: #777;
  font-size: 13px;
  margin: 0;
}

.footer-copyright-bottom {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}

.footer-icp,
.footer-police {
  margin: 0;
}

.footer-icp a,
.footer-police a {
  color: #777;
  text-decoration: none;
  font-size: 13px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 4px;
}

.footer-icp a:hover,
.footer-police a:hover {
  color: #fff;
}

.footer-police img {
  height: 16px;
  width: auto;
  vertical-align: middle;
}

#contact.services-section {
  padding: 120px 20px 100px;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 30px;
}

.contact-info {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-info:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 35px rgba(13, 58, 138, 0.15);
}

.qr-code-card {
  background: white;
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.qr-code-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 35px rgba(13, 58, 138, 0.15);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid #e2e8f0;
}

.contact-item:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.contact-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #0d3a8a 0%, #1a4a9e 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 24px;
  flex-shrink: 0;
}

.contact-detail h4 {
  font-size: 16px;
  color: #333;
  margin-bottom: 6px;
  font-weight: bold;
}

.contact-detail p {
  font-size: 15px;
  color: #666;
  line-height: 1.8;
}

.qr-code-card h4 {
  font-size: 18px;
  color: #333;
  margin-bottom: 25px;
  font-weight: bold;
}

.qr-code-card img {
  height: 220px;
  width: auto;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s;
}

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

@media (max-width: 992px) {
  .nav-menu ul {
    gap: 15px;
  }
  .nav-menu a {
    font-size: 14px;
  }
  .services-grid, .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .carousel-title {
    font-size: 32px;
  }
  .carousel-number {
    font-size: 120px;
  }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-links-col {
    align-items: center;
    text-align: center;
  }
  .footer-links {
    justify-content: center;
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-col-title {
    padding-left: 0;
  }
  .footer-col-title::before {
    display: none;
  }
  .footer-desc {
    max-width: none;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  .carousel-title {
    font-size: 24px;
  }
  .carousel-desc {
    font-size: 14px;
  }
  .carousel-number {
    display: none;
  }
  .carousel-control {
    width: 45px;
    height: 45px;
    font-size: 20px;
  }
  .carousel-control.prev {
    left: 20px;
  }
  .carousel-control.next {
    right: 20px;
  }
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
  }
  .contact-info {
    padding: 25px;
  }
  .contact-icon {
    width: 48px;
    height: 48px;
    font-size: 20px;
  }
  .qr-code-card {
    padding: 30px;
  }
  .qr-code-card img {
    height: 180px;
  }
  .footer {
    padding: 40px 20px 30px;
  }
  .footer-grid {
    padding-bottom: 30px;
  }
  .footer-brand {
    align-items: center;
    text-align: center;
  }
  .footer-logo span {
    font-size: 18px;
  }
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .footer-copyright-bottom {
    flex-direction: column;
    gap: 10px;
  }
}