/* 基础样式 */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #64748b;
  --text: #1e293b;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-gray: #f8fafc;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
  --radius: 8px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* 导航栏 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.1rem;
}

.logo-text {
  font-weight: 700;
  font-size: 1.25rem;
}

.nav {
  display: flex;
  gap: 0.5rem;
}

.nav-link {
  padding: 0.5rem 1rem;
  text-decoration: none;
  color: var(--text-light);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all 0.2s;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--bg-gray);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 60%;
}

.nav-link {
  position: relative;
}

.header-actions {
  display: flex;
  gap: 0.75rem;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-outline:hover {
  background: var(--bg-gray);
  transform: translateY(-2px);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-white {
  background: white;
  color: var(--primary);
}

.btn-outline-white {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.5);
  color: white;
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.1);
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
}

/* 移动端菜单 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: 0.3s;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 1rem;
  flex-direction: column;
  z-index: 999;
}

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

.mobile-menu a {
  padding: 0.75rem 1rem;
  text-decoration: none;
  color: var(--text);
  border-radius: var(--radius);
}

.mobile-menu a:hover {
  background: var(--bg-gray);
}

/* Hero区域 */
.hero {
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
  padding: 7rem 0 3rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(37,99,235,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(124,58,237,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(236,72,153,0.06) 0%, transparent 50%),
    linear-gradient(135deg, rgba(37,99,235,0.03) 0%, transparent 50%, rgba(100,116,139,0.03) 100%);
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(37,99,235,0.03) 2px, transparent 2px),
    radial-gradient(circle at 75% 75%, rgba(124,58,237,0.03) 2px, transparent 2px);
  background-size: 60px 60px;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-10px) translateX(5px); }
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(90deg, #2563eb, #7c3aed, #ec4899, #f59e0b, #10b981, #2563eb);
  background-size: 300% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-flow 6s ease infinite;
}

@keyframes gradient-flow {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-light);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-tags {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.hero-tag {
  padding: 0.35rem 1rem;
  background: rgba(37,99,235,0.1);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.hero-stat-num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-light);
}

.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* 通用区块 */
.section {
  padding: 5rem 0;
}

.section-gray {
  background: var(--bg-gray);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--text-light);
  font-size: 1.1rem;
}

/* 网格布局 */
.grid {
  display: grid;
  gap: 1.5rem;
}

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

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* 卡片 */
.card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all 0.3s;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
  border-color: var(--primary);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--text-light);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.card-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
}

.card-link:hover {
  text-decoration: underline;
}

.card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  transition: transform 0.3s ease;
  background: var(--bg-gray);
}

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

.card {
  overflow: hidden;
}

/* 特性 */
.feature {
  text-align: center;
  padding: 1.5rem;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.feature h4 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.feature p {
  color: var(--text-light);
  font-size: 0.9rem;
}

.feature {
  transition: transform 0.3s ease;
  border-radius: var(--radius);
}

.feature:hover {
  transform: translateY(-5px);
  background: white;
  box-shadow: var(--shadow);
}

.feature:hover .feature-icon {
  transform: scale(1.15);
}

.feature-icon {
  transition: transform 0.3s ease;
}

/* 统计数据 */
.stats-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  opacity: 0.9;
}

/* 案例卡片 */
.case-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all 0.3s;
}

.case-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: var(--primary);
}

.case-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(37,99,235,0.1);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.case-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.case-card p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* 客户评价 */
.testimonial-card {
  background: white;
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.testimonial-content {
  margin-bottom: 1.5rem;
}

.testimonial-content p {
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.7;
  font-style: italic;
}

.testimonial-content p::before {
  content: "";
  font-size: 2rem;
  color: var(--primary);
  line-height: 0;
  vertical-align: -0.4em;
  margin-right: 0.25rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1.1rem;
}

.testimonial-info h4 {
  font-size: 1rem;
  margin-bottom: 0.15rem;
}

.testimonial-info p {
  color: var(--text-light);
  font-size: 0.85rem;
  margin: 0;
}

/* 价格卡片 */
.pricing-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  transition: all 0.3s;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-5px);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.pricing-header {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.pricing-header h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.pricing-price {
  margin-bottom: 0.5rem;
}

.price-amount {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
}

.price-amount::before {
  content: "¥";
  font-size: 1.25rem;
  vertical-align: super;
}

.price-unit {
  color: var(--text-light);
  font-size: 0.9rem;
}

.pricing-header p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin: 0;
}

.pricing-features {
  list-style: none;
  margin-bottom: 1.5rem;
  text-align: left;
}

.pricing-features li {
  padding: 0.6rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--bg-gray);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* CTA区域 */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  text-align: center;
  padding: 5rem 0;
}

.cta-section h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 2rem;
}

.cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* 页脚 */
.footer {
  background: var(--text);
  color: white;
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr auto;
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: rgba(255,255,255,0.7);
  margin-top: 1rem;
}

.footer-brand .logo-text {
  color: white;
}

.footer-links h4 {
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-links a, .footer-links p {
  display: block;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.footer-links a:hover {
  color: white;
}

.footer-qrcode {
  text-align: center;
}

.footer-qrcode h4 {
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-qrcode img {
  width: 120px;
  height: 120px;
  border-radius: var(--radius);
  background: white;
  padding: 4px;
}

.footer-qrcode p {
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 2rem;
  text-align: center;
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
}

.footer-bottom p {
  text-align: center;
  margin: 0;
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: rgba(255,255,255,0.8);
}

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


/* 页面Hero */
.page-hero {
  background: linear-gradient(135deg, var(--bg-gray) 0%, rgba(37,99,235,0.05) 100%);
  padding: 8rem 0 3rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.page-hero h1 {
  animation: fadeInUp 0.6s ease;
}

.page-hero p {
  animation: fadeInUp 0.6s ease 0.1s both;
}

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

.page-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.page-hero p {
  color: var(--text-light);
  font-size: 1.1rem;
}

/* 产品详情 */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 4rem 0;
}

.product-detail.reverse {
  direction: rtl;
}

.product-detail.reverse > * {
  direction: ltr;
}

.product-image {
  border-radius: var(--radius);
  height: 300px;
  width: 100%;
  object-fit: cover;
}

img.product-image {
  background: var(--bg-gray);
}

div.product-image {
  background: var(--bg-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
}

.product-info h3 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.product-info p {
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.product-features {
  list-style: none;
}

.product-features li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-light);
}

.product-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* 团队成员 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.team-card {
  text-align: center;
  padding: 2rem 1rem;
}

.team-avatar {
  width: 120px;
  height: 120px;
  background: var(--bg-gray);
  border-radius: 50%;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.team-card h4 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.team-card .role {
  color: var(--primary);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.team-card p {
  color: var(--text-light);
  font-size: 0.85rem;
}

/* 时间线 */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--primary);
  border-radius: 50%;
  transform: translateX(-5px);
}

.timeline-year {
  color: var(--primary);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.timeline-item h4 {
  margin-bottom: 0.5rem;
}

.timeline-item p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* 新闻列表 */
.news-card {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s;
}

.news-card:hover {
  box-shadow: var(--shadow);
}

.news-image {
  width: 200px;
  height: 140px;
  border-radius: var(--radius);
  flex-shrink: 0;
  object-fit: cover;
}

div.news-image {
  background: var(--bg-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.news-content {
  flex: 1;
}

.news-date {
  color: var(--text-light);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.news-content h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.news-content h3 a {
  color: var(--text);
  text-decoration: none;
}

.news-content h3 a:hover {
  color: var(--primary);
}

.news-content p {
  color: var(--text-light);
  font-size: 0.9rem;
}

/* 联系表单 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info {
  padding: 2rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: rgba(37,99,235,0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-item h4 {
  margin-bottom: 0.25rem;
}

.contact-item p {
  color: var(--text-light);
  font-size: 0.95rem;
}

.qrcode-box {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--bg-gray);
  border-radius: var(--radius);
  text-align: center;
}

.qrcode-img {
  width: 150px;
  height: 150px;
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
}

.qrcode-box p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin: 0;
}

.contact-form {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* 价值观 */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.value-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s;
}

.value-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
  border-color: var(--primary);
}

.value-card:hover .value-icon {
  transform: scale(1.1);
}

.value-icon {
  transition: transform 0.3s ease;
}

.value-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.value-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.value-card p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* 响应式 */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav, .header-actions {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .product-detail {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .product-detail.reverse {
    direction: ltr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .team-grid {
    grid-template-columns: 1fr;
  }
  
  .values-grid {
    grid-template-columns: 1fr;
  }
  
  .news-card {
    flex-direction: column;
  }
  
  .news-image {
    width: 100%;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* 小程序码展示 */
.miniapp-grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.miniapp-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  width: 200px;
  height: 200px;
  justify-content: center;
  animation: fadeInUp 0.5s ease both;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.miniapp-card:nth-child(1) { animation-delay: 0.05s; }
.miniapp-card:nth-child(2) { animation-delay: 0.15s; }
.miniapp-card:nth-child(3) { animation-delay: 0.25s; }
.miniapp-card:nth-child(4) { animation-delay: 0.35s; }
.miniapp-card:nth-child(5) { animation-delay: 0.45s; }

.miniapp-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px) scale(1.03);
  border-color: var(--primary);
}

.miniapp-card img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 6px;
  transition: transform 0.4s ease;
}

.miniapp-card:hover img {
  transform: scale(1.08);
}

.miniapp-card p {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  text-align: center;
  margin: 0;
  transition: color 0.3s ease;
}

.miniapp-card:hover p {
  color: var(--primary);
}

@media (max-width: 768px) {
  .miniapp-grid {
    gap: 1rem;
  }
  .miniapp-card {
    width: 130px;
    height: 130px;
    padding: 0.875rem;
  }
  .miniapp-card img {
    width: 80px;
    height: 80px;
  }
}

/* 技术栈模块 */
.tech-stack {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.tech-category {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: box-shadow 0.3s, transform 0.3s;
}

.tech-category:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.tech-category-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 1rem;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  padding: 0.35rem 0.85rem;
  background: var(--bg-gray);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text);
  transition: all 0.2s;
  cursor: default;
}

.tech-tag:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .tech-stack {
    grid-template-columns: 1fr;
  }
}

/* 核心能力放射图 */
.radial-layout {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

/* 中心圆 */
.radial-center {
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  padding: 1rem;
}

.radial-center-inner {
  width: 160px;
  height: 160px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 0 0 12px rgba(37,99,235,0.1), 0 0 0 24px rgba(37,99,235,0.05);
  animation: pulse-ring 3s ease-in-out infinite;
  position: relative;
}

@keyframes pulse-ring {
  0%, 100% { box-shadow: 0 0 0 12px rgba(37,99,235,0.1), 0 0 0 24px rgba(37,99,235,0.05); }
  50%       { box-shadow: 0 0 0 18px rgba(37,99,235,0.12), 0 0 0 36px rgba(37,99,235,0.06); }
}

.radial-center-icon {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.radial-center-name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-top: 0.25rem;
}

.radial-center-sub {
  font-size: 0.75rem;
  opacity: 0.85;
  margin-top: 0.15rem;
}

/* 左右列 */
.radial-left,
.radial-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 0;
  position: relative;
}

.radial-left {
  flex-direction: row-reverse;
  text-align: right;
}

.radial-right {
  flex-direction: row;
  text-align: left;
}

/* 连接点 */
.radial-dot {
  width: 10px;
  height: 10px;
  min-width: 10px;
  background: var(--primary);
  border-radius: 50%;
  position: relative;
}

.radial-dot::before {
  content: '';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(37,99,235,0.3));
  width: 60px;
}

.radial-left .radial-dot::before {
  right: 10px;
  background: linear-gradient(to left, transparent, rgba(37,99,235,0.3));
}

.radial-right .radial-dot::before {
  left: 10px;
}

/* 文字内容 */
.radial-content h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.35rem;
}

.radial-content h4 em {
  font-style: normal;
  color: var(--primary);
}

.radial-content p {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.6;
  max-width: 220px;
}

.radial-left .radial-content p {
  margin-left: auto;
}

/* hover 效果 */
.radial-left:hover .radial-content h4,
.radial-right:hover .radial-content h4 {
  color: var(--primary);
}

.radial-left:hover .radial-dot,
.radial-right:hover .radial-dot {
  transform: scale(1.4);
  transition: transform 0.2s;
}

/* 移动端降级为列表 */
@media (max-width: 768px) {
  .radial-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .radial-center {
    order: -1;
    margin-bottom: 1.5rem;
  }

  .radial-left,
  .radial-right {
    flex-direction: row;
    text-align: left;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
  }

  .radial-left {
    flex-direction: row;
  }

  .radial-left .radial-content p,
  .radial-right .radial-content p {
    margin-left: 0;
    max-width: 100%;
  }

  .radial-dot::before {
    display: none;
  }
}