/* ==================== 英雄区域 ==================== */
.hero {
  padding: 180px 0 120px;
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-content {
  animation: fadeInUp 1s ease;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 30px;
  color: var(--primary-color);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 32px;
  animation: fadeInUp 1s ease 0.2s both, float 3s ease-in-out infinite;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.hero-badge i {
  color: #fbbf24;
  filter: drop-shadow(0 2px 4px rgba(251, 191, 36, 0.5));
}

.hero h1 {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 24px;
  letter-spacing: -1.5px;
  animation: fadeInUp 1s ease 0.3s both;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 600px;
  animation: fadeInUp 1s ease 0.4s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 60px;
  animation: fadeInUp 1s ease 0.5s both;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  animation: fadeInUp 1s ease 0.6s both;
}

.stat-item {
  text-align: center;
  padding: 28px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  position: relative;
  overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
  opacity: 0;
  transition: opacity 0.3s;
}

.stat-item:hover::before {
  opacity: 1;
}

.stat-item:hover {
  transform: translateY(-8px) scale(1.05);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 16px 40px rgba(59, 130, 246, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  border-color: rgba(59, 130, 246, 0.4);
}

.stat-value {
  font-size: 40px;
  font-weight: 700;
  background: linear-gradient(135deg, #3b82f6, #06b6d4, #8b5cf6);
  background-size: 200% 200%;
  animation: gradientFlow 3s ease infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* 英雄卡片 */
.hero-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
  animation: fadeInRight 1s ease 0.4s both;
  position: relative;
  overflow: hidden;
}

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

.hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.hero-card-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
  background-size: 200% 200%;
  animation: gradientFlow 3s ease infinite;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 28px;
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.4), inset 0 2px 0 rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.hero-card-icon::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(45deg);
  animation: shine 3s infinite;
}

.hero-card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.hero-card-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
}

.hero-card-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero-card-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.4);
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.hero-card-item:hover {
  background: rgba(255, 255, 255, 0.85);
  transform: translateX(12px);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  border-color: rgba(59, 130, 246, 0.3);
}

.hero-card-item i {
  color: var(--primary-color);
  font-size: 18px;
  margin-top: 2px;
  flex-shrink: 0;
}

.hero-card-item span {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.6;
  font-weight: 500;
}

/* ==================== 服务区域 ==================== */
.services {
  padding: 100px 0;
  background: linear-gradient(135deg, rgba(240, 249, 255, 0.5) 0%, rgba(224, 242, 254, 0.5) 100%);
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg width="60" height="60" xmlns="http://www.w3.org/2000/svg"><circle cx="30" cy="30" r="1.5" fill="rgba(59,130,246,0.1)"/></svg>');
  opacity: 0.5;
  pointer-events: none;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  text-decoration: none;
  color: inherit;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, #3b82f6, #06b6d4, #8b5cf6);
  background-size: 200% 100%;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(139, 92, 246, 0.05));
  opacity: 0;
  transition: opacity 0.3s;
}

.service-card:hover::before {
  transform: scaleX(1);
  animation: gradientSlide 2s ease infinite;
}

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

.service-card:hover {
  transform: translateY(-16px) scale(1.02);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 24px 60px rgba(59, 130, 246, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  border-color: rgba(59, 130, 246, 0.3);
}

.service-icon {
  width: 64px;
  height: 64px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 2px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.5);
  position: relative;
  z-index: 1;
}

.service-card:hover .service-icon {
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
  background-size: 200% 200%;
  animation: gradientFlow 3s ease infinite;
  transform: scale(1.15) rotate(8deg);
  box-shadow: 0 16px 40px rgba(59, 130, 246, 0.4), inset 0 2px 0 rgba(255, 255, 255, 0.3);
  border-color: transparent;
}

.service-icon i {
  font-size: 30px;
  background: linear-gradient(135deg, #3b82f6, #06b6d4, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: var(--transition);
}

.service-card:hover .service-icon i {
  color: white;
  -webkit-text-fill-color: white;
}

.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ==================== 特性区域 ==================== */
.features {
  padding: 120px 0;
  background: white;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.feature-card {
  text-align: center;
  padding: 48px 36px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(139, 92, 246, 0.05));
  opacity: 0;
  transition: opacity 0.3s;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-12px) scale(1.05);
  box-shadow: 0 20px 50px rgba(59, 130, 246, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.feature-icon {
  width: 88px;
  height: 88px;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
  background-size: 200% 200%;
  animation: gradientFlow 3s ease infinite;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 28px;
  transition: var(--transition);
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.3), inset 0 2px 0 rgba(255, 255, 255, 0.3);
  position: relative;
  z-index: 1;
}

.feature-card:hover .feature-icon {
  transform: scale(1.15) rotate(360deg);
  box-shadow: 0 16px 48px rgba(59, 130, 246, 0.5), inset 0 2px 0 rgba(255, 255, 255, 0.4);
}

.feature-icon i {
  font-size: 36px;
  color: white;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==================== 关于区域 ==================== */
.about {
  padding: 120px 0;
  background: linear-gradient(135deg, rgba(254, 252, 232, 0.3) 0%, rgba(254, 243, 199, 0.3) 100%);
  position: relative;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg width="80" height="80" xmlns="http://www.w3.org/2000/svg"><circle cx="40" cy="40" r="2" fill="rgba(139,92,246,0.08)"/></svg>');
  opacity: 0.6;
  pointer-events: none;
}

.about .container {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-content h2 {
  font-size: 42px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
  line-height: 1.2;
  letter-spacing: -1px;
}

.about-content p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 40px;
}

.about-item {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.about-item:hover {
  transform: translateX(12px) scale(1.02);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  border-color: rgba(59, 130, 246, 0.3);
}

.about-item-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
  background-size: 200% 200%;
  animation: gradientFlow 3s ease infinite;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 28px;
  flex-shrink: 0;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3), inset 0 2px 0 rgba(255, 255, 255, 0.3);
}

.about-item-text h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.about-item-text p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

.about-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  padding: 56px;
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 60px rgba(59, 130, 246, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.6);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, #3b82f6, #06b6d4, #8b5cf6);
  background-size: 200% 100%;
  animation: gradientSlide 3s ease infinite;
}

.about-card-icon {
  width: 96px;
  height: 96px;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
  background-size: 200% 200%;
  animation: gradientFlow 3s ease infinite;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 28px;
  color: white;
  font-size: 42px;
  box-shadow: 0 16px 48px rgba(59, 130, 246, 0.4), inset 0 2px 0 rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.about-card-icon::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(45deg);
  animation: shine 3s infinite;
}

.about-card h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.about-card p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

.about-stat {
  text-align: center;
}

.about-stat-value {
  font-size: 32px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.about-stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ==================== 案例区域 ==================== */
.cases {
  padding: 100px 0;
  background: white;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case-card {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: var(--transition);
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  text-decoration: none;
  color: inherit;
  display: block;
}

.case-card:hover {
  transform: translateY(-12px) scale(1.02);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 24px 60px rgba(59, 130, 246, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  border-color: rgba(59, 130, 246, 0.3);
}

.case-image {
  height: auto;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
  background-size: 200% 200%;
  animation: gradientFlow 5s ease infinite;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 64px;
  position: relative;
  overflow: hidden;
  background-position: center;
}

.case-image.has-image {
  background: #fff;
  animation: none;
}

.case-image.has-image::before,
.case-image.has-image::after {
  display: none;
}

.case-image.has-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.case-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0,0,0,0.1), rgba(0,0,0,0.2));
}

.case-image::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transform: rotate(45deg);
  animation: shine 4s infinite;
}

.case-tag {
  position: absolute;
  top: 24px;
  right: 24px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 24px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-color);
  z-index: 2;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.case-content {
  padding: 32px;
}

.case-content h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.case-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.case-tech {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.case-tech span {
  padding: 6px 14px;
  background: var(--bg-secondary);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ==================== 联系区域 ==================== */
.contact {
  padding: 120px 0;
  background: linear-gradient(135deg, rgba(240, 249, 255, 0.4) 0%, rgba(224, 231, 255, 0.4) 100%);
  position: relative;
  scroll-margin-top: 110px;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg width="70" height="70" xmlns="http://www.w3.org/2000/svg"><circle cx="35" cy="35" r="1.8" fill="rgba(59,130,246,0.12)"/></svg>');
  opacity: 0.5;
  pointer-events: none;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}

.contact-info {
  order: 1;
}

.contact-form {
  order: 2;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 28px;
}

.contact-item {
  display: flex;
  gap: 16px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.contact-item:hover {
  transform: translateX(12px) scale(1.02);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  border-color: rgba(59, 130, 246, 0.3);
}

.contact-item-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
  background-size: 200% 200%;
  animation: gradientFlow 3s ease infinite;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 24px;
  flex-shrink: 0;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3), inset 0 2px 0 rgba(255, 255, 255, 0.3);
}

.contact-item-text h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.contact-item-text p {
  font-size: 15px;
  color: var(--text-secondary);
}

.contact-form {
  background: white;
  padding: 40px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.contact-form-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  scroll-margin-top: 0;
}

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

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text-primary);
  transition: var(--transition);
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-submit {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

/* ==================== 页脚 ==================== */
footer {
  background: linear-gradient(135deg, rgba(224, 242, 254, 0.6) 0%, rgba(221, 214, 254, 0.6) 100%);
  color: var(--text-primary);
  padding: 80px 0 40px;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(59,130,246,0.15)"/></svg>');
  opacity: 0.4;
  pointer-events: none;
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
  position: relative;
  z-index: 1;
}

.footer-brand .logo {
  margin-bottom: 20px;
}

.footer-brand .logo-icon {
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
  background-size: 200% 200%;
  animation: gradientFlow 3s ease infinite;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.footer-brand .logo-text {
  color: var(--text-primary);
}

.footer-brand p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin: 20px 0 24px;
  font-size: 15px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  transition: var(--transition);
  border: 1px solid rgba(59, 130, 246, 0.2);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.footer-social a:hover {
  background: linear-gradient(135deg, #3b82f6, #06b6d4, #8b5cf6);
  background-size: 200% 200%;
  animation: gradientFlow 3s ease infinite;
  color: white;
  transform: translateY(-4px) rotate(5deg);
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  border-color: transparent;
}

.footer-links h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  transition: var(--transition);
  display: inline-block;
  position: relative;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #3b82f6, #06b6d4, #8b5cf6);
  transition: width 0.3s;
}

.footer-links a:hover {
  color: var(--primary-color);
  transform: translateX(4px);
}

.footer-links a:hover::after {
  width: 100%;
}

.footer-bottom {
  padding-top: 40px;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  font-size: 14px;
  position: relative;
  z-index: 1;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
  .hero .container,
  .about .container,
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .hero {
    padding: 130px 0 70px;
  }
  
  .hero h1 {
    font-size: 36px;
    line-height: 1.2;
  }
  
  .hero .container {
    display: flex;
    flex-direction: column;
    gap: 28px;
  }

  .hero-desc {
    font-size: 16px;
    margin-bottom: 28px;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero-stats {
    display: none;
  }

  .hero-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
  }

  .hero-card-header {
    margin-bottom: 20px;
    padding-bottom: 16px;
  }

  .hero-card-icon {
    width: 56px;
    height: 56px;
    font-size: 24px;
  }

  .hero-card-title {
    font-size: 18px;
  }

  .hero-card-item {
    padding: 16px;
    gap: 12px;
  }

  .hero-card-item span {
    font-size: 15px;
  }
  
  .services {
    padding: 70px 0;
  }
  
  .services-grid {
    gap: 16px;
  }
  
  .service-card {
    padding: 24px 22px;
  }
  
  .service-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 16px;
  }
  
  .service-icon i {
    font-size: 26px;
  }
  
  .service-card h3 {
    font-size: 18px;
  }
  
  .service-card p {
    font-size: 14px;
  }
  
  .services-grid,
  .features-grid,
  .cases-grid {
    grid-template-columns: 1fr;
  }
  
  .cases {
    padding: 70px 0;
  }
  
  .case-image {
    aspect-ratio: 1 / 1;
    font-size: 56px;
  }
  
  .case-content {
    padding: 24px;
  }

  .contact-info {
    order: 2;
  }
  
  .contact-form {
    order: 1;
  }

  .contact-wrapper {
    gap: 24px;
  }

  .contact-list {
    gap: 12px;
    margin-top: 18px;
  }
  
  .contact-item {
    padding: 16px;
    gap: 12px;
  }
  
  .contact-item-icon {
    width: 48px;
    height: 48px;
    font-size: 20px;
  }
  
  .contact-form {
    padding: 24px;
  }
  
  .contact-form-title {
    font-size: 18px;
    margin-bottom: 12px;
  }
  
  .form-row {
    gap: 10px;
    grid-template-columns: 1fr;
  }
  
  .form-group {
    margin-bottom: 10px;
  }
  
  .form-group label {
    margin-bottom: 4px;
  }
  
  .form-group textarea {
    min-height: 96px;
  }
  
  .form-submit {
    padding: 14px;
  }
  
  .footer-main {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}