/* 全局样式 - 隐藏滚动条 */
html {
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

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

body {
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
  margin: 0;
  padding: 0;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE and Edge */
  box-sizing: border-box;
}

body::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

/* 确保主要容器不会超出视口 */
img, video, iframe {
  max-width: 100%;
  height: auto;
}

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  max-width: 100vw;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  transition: all 0.3s ease;
  box-sizing: border-box;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

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

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.logo-link:hover {
  opacity: 0.8;
}

.logo-image {
  height: 45px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  display: block;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 40px;
}

.nav-link {
  text-decoration: none;
  color: #333;
  font-size: 16px;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: #000000;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 0;
  right: 0;
  height: 5px;
  background: rgb(230, 0, 18);
}

/* Hero区域 */
.hero-section {
  position: relative;
  min-height: 600px;
  /*background: linear-gradient(135deg, #2a82e4 0%, #1e5fb8 100%);*/
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 40px 80px;
  overflow: hidden;
  margin-top: 70px;
  width: 100%;
  max-width: 100vw;
  box-sizing: border-box;
}

.hero-decoration {
  position: absolute;
  width: 100%;
  height: 100%;
  /*background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><path d="M0,300 Q300,200 600,300 T1200,300" stroke="rgba(255,255,255,0.1)" fill="none" stroke-width="2"/></svg>');*/
  background: url(images/pc_back.jpg);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
  /*opacity: 0.3;*/
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  color: white;
}

.hero-title {
  font-size: 64px;
  font-weight: 700;
  margin: 0 0 20px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
  font-size: 28px;
  margin: 0 0 20px;
  font-weight: 300;
}

.hero-description {
  font-size: 18px;
  margin: 0 0 40px;
  opacity: 0.9;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: #ffffff;
  color: rgb(230, 0, 18);
}

.btn-primary:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(186, 186, 186, 0.15);
}

.btn-secondary {
  background: transparent;
  color: #ffffff;
  border: 2px solid #ffffff;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
  text-align: center;
}

/* 通用section样式 */
.section {
  padding: 80px 40px;
  width: 100%;
  max-width: 100vw;
  box-sizing: border-box;
  overflow-x: hidden;
}

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

/* 宽容器 - 1400px */
.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
  padding: 0;
}

/* 全宽容器 - 100% */
.container-full {
  max-width: 100%;
  margin: 0 auto;
  width: 100%;
  padding: 80px 40px;
  box-sizing: border-box;
}

.section-title {
  font-size: 42px;
  font-weight: 700;
  text-align: center;
  color: #333;
  margin: 0 0 20px;
}

.section-subtitle {
  font-size: 18px;
  text-align: center;
  color: #666;
  margin: 0 0 60px;
}

/* 关于我们 */
.about-section {
  background: radial-gradient(circle at top left, rgba(230, 0, 18, 0.06), transparent 55%),
              radial-gradient(circle at bottom right, rgba(0, 0, 0, 0.02), transparent 55%);
  position: relative;
  overflow: hidden;
}

.about-inner {
  background: #ffffff;
  border-radius: 24px;
  padding: 40px 40px 36px;
  box-shadow: 0 18px 60px rgba(15, 23, 42, 0.06);
  border: 1px solid rgba(15, 23, 42, 0.04);
  position: relative;
  overflow: hidden;
}

.about-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(230, 0, 18, 0.07), transparent 55%);
  opacity: 0.9;
  pointer-events: none;
}

.about-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 48px;
  z-index: 1;
}

.about-left {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: #e60012;
  background: rgba(230, 0, 18, 0.06);
  border: 1px solid rgba(230, 0, 18, 0.18);
  width: fit-content;
}

.about-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: radial-gradient(circle, #ff4655, #e60012);
  box-shadow: 0 0 0 4px rgba(230, 0, 18, 0.18);
}

.about-heading {
  font-size: 28px;
  font-weight: 700;
  color: #111827;
  margin: 0;
  line-height: 1.5;
}

.about-intro {
  font-size: 15px;
  line-height: 1.9;
  color: #4b5563;
  margin: 0;
}

.about-points {
  list-style: none;
  padding: 0;
  margin: 4px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.about-points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: #374151;
}

.about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff6b6b, #e60012);
}

.about-right {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.stat-card {
  background: linear-gradient(135deg, #ffffff, #f9fafb);
  border-radius: 16px;
  padding: 16px 14px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.stat-number {
  font-size: 20px;
  font-weight: 700;
  color: #e60012;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: #6b7280;
  line-height: 1.6;
}

.about-tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.about-tag {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  color: #374151;
  background: rgba(15, 23, 42, 0.03);
  border: 1px solid rgba(15, 23, 42, 0.06);
  backdrop-filter: blur(6px);
}

/* 产品服务 */
.products-section {
  background: linear-gradient(180deg, #fafafa 0%, #ffffff 50%, #fafafa 100%);
  position: relative;
  overflow: hidden;
}

.products-section::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(230, 0, 18, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.products-section::after {
  content: '';
  position: absolute;
  bottom: -200px;
  left: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(230, 0, 18, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.products-header {
  text-align: center;
  margin-bottom: 60px;
  position: relative;
  z-index: 1;
}

.products-badge {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: rgb(230, 0, 18);
  background: rgba(230, 0, 18, 0.08);
  border: 1px solid rgba(230, 0, 18, 0.2);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  margin-top: 40px;
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.product-card {
  position: relative;
  height: 100%;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card-inner {
  background: #ffffff;
  border-radius: 20px;
  padding: 40px 32px;
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, rgb(230, 0, 18), rgb(255, 0, 23));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card-inner::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(230, 0, 18, 0.08) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.product-card:hover .product-card-inner {
  transform: translateY(-12px);
  box-shadow: 0 20px 60px rgba(230, 0, 18, 0.15);
  border-color: rgba(230, 0, 18, 0.2);
}

.product-card:hover .product-card-inner::before {
  transform: scaleX(1);
}

.product-card:hover .product-card-inner::after {
  opacity: 1;
}

.product-card:hover .product-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
}

.product-card:hover .product-icon-bg {
  background: linear-gradient(135deg, rgba(230, 0, 18, 0.15), rgba(255, 0, 23, 0.1));
  transform: scale(1.2);
}

.product-card:hover .product-link {
  color: rgb(230, 0, 18);
  transform: translateX(4px);
}

.product-number {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 14px;
  font-weight: 700;
  color: rgba(230, 0, 18, 0.15);
  font-family: 'Arial', sans-serif;
  letter-spacing: 1px;
}

.product-icon-wrapper {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-icon-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(230, 0, 18, 0.08), rgba(255, 0, 23, 0.05));
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transform: rotate(-5deg);
}

.product-icon {
  font-size: 40px;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.product-title {
  font-size: 22px;
  font-weight: 700;
  color: #111827;
  margin: 0 0 16px;
  line-height: 1.4;
}

.product-description {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.7;
  margin: 0 0 24px;
  flex-grow: 1;
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.feature-badge {
  display: inline-block;
  padding: 6px 14px;
  font-size: 12px;
  color: #4b5563;
  background: rgba(0, 0, 0, 0.03);
  border-radius: 6px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
}

.product-card:hover .feature-badge {
  background: rgba(230, 0, 18, 0.06);
  border-color: rgba(230, 0, 18, 0.15);
  color: rgb(230, 0, 18);
}

.product-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.product-link {
  font-size: 14px;
  font-weight: 600;
  color: #6b7280;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: all 0.3s ease;
  cursor: pointer;
}

/* 产品展示 */
.showcase-section {
  background: #ffffff;
  position: relative;
  overflow: hidden;
  padding: 0;
  min-height: 700px;
}

.showcase-header {
  max-width: 1400px;
  margin: 0 auto;
  padding: 60px 40px 40px;
  text-align: center;
}

.showcase-main-title {
  font-size: 42px;
  font-weight: 700;
  color: #111827;
  margin: 0 0 16px;
  letter-spacing: -0.5px;
}

.showcase-main-subtitle {
  font-size: 18px;
  color: #6b7280;
  margin: 0 0 40px;
  line-height: 1.6;
}

.showcase-content-wrapper {
  position: relative;
  width: 100%;
  min-height: 600px;
  background: linear-gradient(135deg, #f3f3f3 0%, #f5f5f5 50%, #ffffff 100%);
  padding: 60px 0;
}

.showcase-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.showcase-tab-btn {
  padding: 12px 24px;
  background: #f3f4f6;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 500;
  color: #111827;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  white-space: nowrap;
}

.showcase-tab-btn:hover {
  background: rgba(230, 0, 18, 0.1);
  color: rgb(230, 0, 18);
}

.showcase-tab-btn.active {
  background: rgb(230, 0, 18);
  color: white;
  box-shadow: 0 2px 8px rgba(230, 0, 18, 0.3);
}

.showcase-content {
  display: none;
  position: relative;
  width: 100%;
  min-height: 500px;
}

.showcase-content.active {
  display: flex;
  align-items: center;
  gap: 60px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
}

.showcase-left-content {
  flex: 0 0 500px;
  padding: 0;
}

.showcase-right-image {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 450px;
}

.showcase-right-image img {
  /*width: 100%;*/
  height: auto;
  max-height: 500px;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.showcase-module-title {
  margin: 0 0 16px;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.2px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.title-brand {
  color: rgb(230, 0, 18);
  font-weight: 700;
}

.title-separator {
  color: #9ca3af;
  font-weight: 400;
  margin: 0 4px;
}

.title-module {
  color: #374151;
  font-weight: 700;
}

.showcase-module-tagline {
  font-size: 15px;
  color: #6b7280;
  line-height: 1.6;
  margin: 0 0 20px;
  font-weight: 400;
}

.showcase-features {
  background: white;
  margin: 0 0 28px;
  padding: 24px 20px;
  border-radius: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  line-height: 1.6;
  font-size: 15px;
  color: #374151;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.feature-text {
  flex: 0 0 calc(25% - 12px);
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.showcase-actions {
  display: flex;
  gap: 12px;
  margin-top: 0;
  align-items: center;
}

.showcase-actions .btn-primary {
  background: rgb(230, 0, 18);
  color: white;
  border: none;
  padding: 12px 24px;
  font-size: 15px;
}

.showcase-actions .btn-outline {
  background: white;
  color: #374151;
  border: 1px solid #d1d5db;
  padding: 12px 24px;
  font-size: 15px;
}

.showcase-actions .btn-outline:hover {
  background: #f9fafb;
  border-color: rgb(230, 0, 18);
  color: rgb(230, 0, 18);
}

.btn-outline {
  background: white;
  color: rgb(230, 0, 18);
  border: 2px solid rgb(230, 0, 18);
}

.btn-outline:hover {
  background: rgb(230, 0, 18);
  color: white;
}


/* 客户案例 */
.cases-section {
  background: #f8f9fa;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.case-card {
  background: white;
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.case-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid #e0e0e0;
}

.case-title {
  font-size: 20px;
  font-weight: 600;
  color: #333;
  margin: 0;
}

.case-tag {
  background: #f6f6f6;
  color: rgb(230, 0, 18);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
}

.case-description {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin: 0 0 20px;
}

.case-results {
  display: flex;
  gap: 20px;
  padding-top: 20px;
  border-top: 1px solid #f0f0f0;
}

.result-item {
  flex: 1;
  text-align: center;
}

.result-number {
  display: block;
  font-size: 32px;
  font-weight: 700;
  color: rgb(230, 0, 18);
  margin-bottom: 5px;
}

.result-label {
  display: block;
  font-size: 12px;
  color: #999;
}

/* 资质荣誉 */
.qualifications-section {
  background: white;
}

.qualifications-tabs {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
}

.tab-btn {
  padding: 12px 32px;
  background: #f0f0f0;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  color: #666;
  cursor: pointer;
  transition: all 0.3s ease;
}

.tab-btn:hover {
  background: rgba(230, 0, 18, 0.1);
  color: rgb(230, 0, 18);
}

.tab-btn.active {
  background: rgb(230, 0, 18);
  color: white;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.qualifications-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.qualification-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafafa 100%);
  border-radius: 16px;
  padding: 24px 18px;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
}

.qualification-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, rgb(230, 0, 18), rgb(255, 0, 23));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.qualification-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(230, 0, 18, 0.08) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.qualification-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(220, 220, 220, 0.15);
  border-color: rgba(191, 191, 191, 0.2);
}

.qualification-card:hover::before {
  transform: scaleX(1);
}

.qualification-card:hover::after {
  opacity: 1;
}

.qualification-icon-wrapper {
  position: relative;
  display: inline-block;
  margin-bottom: 16px;
}

.qualification-icon {
  font-size: 40px;
  margin: 0;
  display: inline-block;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.qualification-card:hover .qualification-icon {
  transform: scale(1.15) rotate(5deg);
}

.qualification-title {
  font-size: 15px;
  font-weight: 700;
  color: #111827;
  margin: 0 0 10px;
  line-height: 1.4;
  letter-spacing: -0.1px;
}

.qualification-desc {
  font-size: 12px;
  color: #6b7280;
  line-height: 1.6;
  margin: 0 0 6px;
}

.qualification-date {
  font-size: 12px;
  color: #9ca3af;
  margin: 0;
  font-weight: 500;
  letter-spacing: 0.3px;
}

/* 联系我们 */
.contact-section {
  background: #f8f9fa;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 40px;
}

.contact-item {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
}

.contact-icon {
  font-size: 32px;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(230, 0, 18, 0.08);
  border-radius: 50%;
  flex-shrink: 0;
}

.contact-details h3 {
  font-size: 18px;
  font-weight: 600;
  color: #333;
  margin: 0 0 10px;
}

.contact-details p {
  font-size: 14px;
  color: #666;
  margin: 5px 0;
  line-height: 1.6;
}

.contact-form-wrapper {
  background: white;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
}

.form-title {
  font-size: 24px;
  font-weight: 600;
  color: #333;
  margin: 0 0 30px;
  text-align: center;
}

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

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.3s ease;
  box-sizing: border-box;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: rgb(230, 0, 18);
  box-shadow: 0 0 0 3px rgba(230, 0, 18, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* 页脚 */
.footer {
  background: #1a1a1a;
  color: #999;
  padding: 60px 40px 30px;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-title {
  font-size: 24px;
  font-weight: 700;
  color: white;
  margin: 0 0 15px;
}

.footer-subtitle {
  font-size: 18px;
  font-weight: 600;
  color: white;
  margin: 0 0 15px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 10px;
  font-size: 14px;
}

.footer-links a {
  color: #999;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: rgb(230, 0, 18);
}

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding-top: 30px;
  border-top: 1px solid #333;
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  font-size: 14px;
}

/* 返回顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: #2a82e4;
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

.back-to-top:hover {
  background: rgb(230, 0, 18);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-container {
    padding: 0 20px;
    flex-direction: column;
    height: auto;
    padding-top: 15px;
    padding-bottom: 15px;
  }

  .logo-image {
    height: 40px;
    max-width: 160px;
  }

  .nav-menu {
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 15px;
    justify-content: center;
  }

  .hero-section {
    min-height: 500px;
    padding: 100px 20px 60px;
  }

  .hero-title {
    font-size: 40px;
  }

  .hero-subtitle {
    font-size: 20px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .section {
    padding: 60px 20px;
  }

  .showcase-section {
    padding-left: 0;
    padding-right: 0;
  }

  .container-full {
    padding: 60px 20px;
  }

  .about-inner {
    padding: 28px 22px 26px;
  }

  .about-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-right {
    flex-direction: column;
    gap: 16px;
  }

  .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .section-title {
    font-size: 32px;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .product-card-inner {
    padding: 32px 24px;
  }

  .product-icon-wrapper {
    width: 70px;
    height: 70px;
  }

  .product-icon {
    font-size: 36px;
  }

  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .qualifications-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .qualification-card {
    padding: 20px 16px;
  }

  .qualification-icon {
    font-size: 36px;
  }

  .qualification-icon-wrapper {
    margin-bottom: 14px;
  }

  .qualification-title {
    font-size: 14px;
    margin-bottom: 8px;
  }

  .qualification-desc {
    font-size: 11px;
  }

  .showcase-header {
    padding: 40px 20px 30px;
  }

  .showcase-main-title {
    font-size: 32px;
  }

  .showcase-main-subtitle {
    font-size: 16px;
    margin-bottom: 30px;
  }

  .showcase-content.active {
    flex-direction: column;
    gap: 30px;
    padding: 0 20px;
  }

  .showcase-left-content {
    flex: 1 1 100%;
    max-width: 100%;
  }

  .showcase-right-image {
    flex: 1 1 100%;
    min-height: 300px;
  }

  .showcase-right-image img {
    max-height: 300px;
  }

  .showcase-module-title {
    font-size: 26px;
  }

  .showcase-module-tagline {
    font-size: 15px;
  }

  .showcase-tabs {
    gap: 8px;
    margin: 30px 0 40px;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 10px;
    -webkit-overflow-scrolling: touch;
  }

  .showcase-tabs::-webkit-scrollbar {
    height: 4px;
  }

  .showcase-tabs::-webkit-scrollbar-thumb {
    background: #2a82e4;
    border-radius: 2px;
  }

  .showcase-tab-btn {
    padding: 10px 20px;
    font-size: 14px;
    flex-shrink: 0;
  }

  .showcase-module-title {
    font-size: 26px;
  }

  .showcase-module-tagline {
    font-size: 16px;
  }

  .title-main::after {
    width: 50px;
    height: 3px;
  }

  .showcase-features {
    padding: 20px 16px;
    gap: 10px 12px;
  }

  .feature-text {
    flex: 0 0 calc(50% - 6px);
  }

  .feature-tag {
    padding: 6px 16px;
    font-size: 13px;
  }

  .showcase-actions {
    flex-direction: column;
  }

  .showcase-actions .btn {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 32px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .section-title {
    font-size: 28px;
  }

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

  .qualifications-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .qualification-card {
    padding: 18px 14px;
  }

  .qualification-icon {
    font-size: 32px;
  }

  .qualification-title {
    font-size: 13px;
  }

  .qualification-desc {
    font-size: 11px;
  }

  .showcase-header {
    padding: 30px 15px 20px;
  }

  .showcase-main-title {
    font-size: 28px;
  }

  .showcase-main-subtitle {
    font-size: 14px;
    margin-bottom: 24px;
  }

  .showcase-tab-btn {
    padding: 10px 18px;
    font-size: 13px;
  }

  .showcase-content.active {
    flex-direction: column;
    gap: 24px;
    padding: 0 15px;
  }

  .showcase-left-content {
    flex: 1 1 100%;
    max-width: 100%;
  }

  .showcase-right-image {
    flex: 1 1 100%;
    min-height: 250px;
  }

  .showcase-right-image img {
    max-height: 250px;
  }

  .showcase-module-title {
    font-size: 22px;
    margin-bottom: 12px;
  }

  .showcase-module-tagline {
    font-size: 14px;
    margin-bottom: 20px;
  }

  .showcase-features {
    padding: 16px 12px;
    gap: 8px 10px;
  }

  .feature-text {
    flex: 0 0 calc(50% - 5px);
    font-size: 13px;
  }

  .showcase-actions {
    flex-direction: column;
    gap: 12px;
  }

  .showcase-actions .btn {
    width: 100%;
  }

  .logo-image {
    height: 35px;
    max-width: 140px;
  }

  .product-card-inner {
    padding: 24px 20px;
  }

  .product-icon-wrapper {
    width: 60px;
    height: 60px;
    margin-bottom: 18px;
  }

  .product-icon {
    font-size: 32px;
  }

  .product-title {
    font-size: 20px;
    margin-bottom: 12px;
  }

  .product-description {
    font-size: 13px;
    margin-bottom: 20px;
  }

  .feature-badge {
    font-size: 11px;
    padding: 5px 12px;
  }

  .container-full {
    padding: 60px 15px;
  }

  .contact-form-wrapper {
    padding: 30px 20px;
  }
}