/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body, html {
  font-family: 'Segoe UI', 'Microsoft YaHei', 'SimHei', sans-serif;
  background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 25%, #16213e 50%, #0f3460 75%, #533483 100%);
  color: #e8f4fd;
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
  min-height: 100%;
  scroll-behavior: smooth;
}

/* 正常滚动容器 */
.fullpage-container {
  min-height: 100vh;
}

/* 正常section高度 */
section[id] {
  min-height: 100vh;
  padding: 4rem 0;
}

/* 正常滚动 */
.container {
  overflow-y: auto;
  height: auto;
}

/* 禁用文本选中 */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Canvas 背景动画容器 */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

/* Hero区域专用背景动画 */
#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

/* 动画定义 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* 高级科技感动画 */
@keyframes pulse {
  0%, 100% { 
    transform: scale(1);
    opacity: 0.8;
  }
  50% { 
    transform: scale(1.2);
    opacity: 1;
  }
}

@keyframes orbit {
  0% { transform: rotate(0deg) translateX(100px) rotate(0deg); }
  100% { transform: rotate(360deg) translateX(100px) rotate(-360deg); }
}

@keyframes focus {
  0%, 100% { 
    transform: scale(1);
    filter: blur(0px);
  }
  50% { 
    transform: scale(1.5);
    filter: blur(1px);
  }
}

@keyframes colorFlow {
  0% { 
    background: linear-gradient(45deg, #3b82f6, #60a5fa, #93c5fd);
    background-size: 200% 200%;
    background-position: 0% 50%;
  }
  50% { 
    background-position: 100% 50%;
  }
  100% { 
    background-position: 0% 50%;
  }
}

@keyframes starTrail {
  0% { 
    transform: translateX(-100px) rotate(0deg);
    opacity: 0;
  }
  50% { 
    opacity: 1;
  }
  100% { 
    transform: translateX(calc(100vw + 100px)) rotate(360deg);
    opacity: 0;
  }
}

/* 主容器 */
.container {
  position: relative;
  z-index: 1;
  padding-top: 0;
  transition: padding-top 0.3s ease;
}

/* 为container添加顶部间距，适应动态header */
.container {
  padding-top: 0;
}

/* 确保每个section独立显示 */
section[id] {
  scroll-margin-top: 100px;
  position: relative;
  padding: 4rem 0;
}

/* 添加section间的视觉分离 */
.features, .products, .tech, .industries {
  position: relative;
}

/* 导航栏 - 动态透明度 */
header {
  padding: 1rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(15, 15, 35, 0);
  backdrop-filter: blur(0px);
  width: 100%;
  box-shadow: none;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  transition: all 0.5s ease;
}

/* 滚动时的header样式 */
header.scrolled {
  background: rgba(15, 15, 35, 0.8);
  backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* 滚动时的分割线 */
header.scrolled::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.5), transparent);
  opacity: 1;
  transition: opacity 0.5s ease;
}

.logo {
  font-size: 1.4rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.5px;
}

.logo span {
  background: linear-gradient(135deg, #6366f1, #8b5cf6, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 10px rgba(99, 102, 241, 0.3);
}

nav ul {
  display: flex;
  gap: 3rem;
  list-style: none;
}

nav a {
  color: #a5b4fc;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6, #06b6d4);
  transition: width 0.3s ease;
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

nav a.active {
  color: #ffffff;
  text-shadow: 0 0 15px rgba(99, 102, 241, 0.7);
}

/* 英雄区域 */
.hero {
  padding: 8rem 5% 5rem;
  text-align: center;
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.hero h1 {
  font-size: 3.8rem;
  margin-bottom: 1.4rem;
  font-weight: 800;
  line-height: 1.2;
  background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 25%, #c7d2fe 50%, #a5b4fc 75%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 300% 300%;
  animation: shine 6s ease infinite;
  position: relative;
  z-index: 2;
}

.hero h1::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 60%);
  z-index: -1;
  animation: focus 4s ease-in-out infinite;
}

.hero h1::after {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
  z-index: -2;
  animation: focus 5s ease-in-out infinite reverse;
}

.hero p {
  font-size: 1.3rem;
  color: #a5b4fc;
  max-width: 800px;
  margin: 0 auto 2.5rem;
  text-shadow: 0 0 10px rgba(165, 180, 252, 0.3);
}

/* 入场动画 */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 入场动画类 - 更丝滑的动画 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
}

.animate-on-scroll-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.animate-on-scroll-right {
  opacity: 0;
  transform: translateX(30px);
  transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
}

.animate-on-scroll-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.animate-on-scroll-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
}

.animate-on-scroll-scale.visible {
  opacity: 1;
  transform: scale(1);
}

.cta-button {
  display: inline-block;
  background: linear-gradient(135deg, #6366f1, #8b5cf6, #06b6d4);
  color: white;
  padding: 1.2rem 2.8rem;
  font-size: 1.2rem;
  font-weight: 600;
  border-radius: 60px;
  text-decoration: none;
  box-shadow: 0 12px 30px rgba(99, 102, 241, 0.5);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  z-index: 2;
}

.cta-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
  z-index: -1;
}

.cta-button:hover::before {
  left: 100%;
}

.cta-button:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: 0 20px 40px rgba(99, 102, 241, 0.7);
  animation: pulse 2s ease-in-out infinite;
}

/* 能力卡片 */
.features {
  padding: 8rem 5% 6rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.features .feature-cards-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3rem;
  margin-top: 2rem;
  position: relative;
  z-index: 2;
}

/* 为每个section添加背景动画容器 */
.section-bg-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.15;
  transition: opacity 1s ease;
}

/* 除第一屏外，其他所有屏幕都使用第二屏的背景色 */
.features,
.products,
.tech,
.industries,
.footer-section {
  background: linear-gradient(135deg, rgba(15, 15, 35, 0.15) 0%, rgba(26, 26, 46, 0.1) 50%, rgba(22, 33, 62, 0.15) 100%);
}

.feature-card {
  background: rgba(15, 15, 35, 0.8);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 16px;
  padding: 2.4rem;
  width: 340px;
  text-align: center;
  transition: all 0.4s ease;
  backdrop-filter: blur(10px);
}

.feature-card:hover {
  transform: translateY(-10px) scale(1.02);
  border-color: #6366f1;
  box-shadow: 0 15px 30px rgba(99, 102, 241, 0.3);
}

.feature-icon {
  font-size: 3.2rem;
  margin-bottom: 1.2rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1.2rem;
  color: #ffffff;
}

.feature-card p {
  color: #93c5fd;
  font-size: 1rem;
  line-height: 1.6;
}

/* 产品服务模块 - 3列布局 */
.products {
  padding: 8rem 5% 6rem;
  text-align: center;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.products .product-categories {
  margin-top: 2rem;
  position: relative;
  z-index: 2;
}

.products h2 {
  font-size: 2.8rem;
  margin-bottom: 1.6rem;
  color: #ffffff;
}

.products p {
  color: #93c5fd;
  font-size: 1.2rem;
  max-width: 900px;
  margin: 0 auto 3.5rem;
}

/* Tab导航样式 */
.product-tabs {
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.tab-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
  padding: 0 1rem;
}

.tab-btn {
  background: rgba(15, 15, 35, 0.6);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  padding: 0.8rem 1.5rem;
  color: #a5b4fc;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  white-space: nowrap;
}

.tab-btn:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(99, 102, 241, 0.6);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.tab-btn.active {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border-color: #6366f1;
  color: #ffffff;
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

/* Tab内容样式 */
.tab-content {
  position: relative;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.5s ease;
}

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

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

/* 分类头部 */
.category-header {
  text-align: center;
  margin-bottom: 3rem;
}

.category-header h3 {
  font-size: 2.2rem;
  color: #ffffff;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff, #a5b4fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.category-header p {
  color: #93c5fd;
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* 服务网格 */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding: 0 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* 服务卡片 */
.service-card {
  background: rgba(15, 15, 35, 0.8);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  transition: all 0.4s ease;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6, #06b6d4);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
  border-color: rgba(99, 102, 241, 0.6);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
  filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.3));
  transition: all 0.3s ease;
}

.service-card:hover .service-icon {
  transform: scale(1.1);
  filter: drop-shadow(0 0 15px rgba(99, 102, 241, 0.5));
}

.service-card h4 {
  font-size: 1.3rem;
  color: #ffffff;
  margin-bottom: 1rem;
  font-weight: 600;
}

.service-card p {
  color: #93c5fd;
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  min-height: 3rem;
}

.service-price {
  font-size: 1.2rem;
  color: #60a5fa;
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: rgba(96, 165, 250, 0.1);
  padding: 0.5rem 1rem;
  border-radius: 25px;
  display: inline-block;
}

.service-link {
  display: inline-block;
  color: #3b82f6;
  text-decoration: none;
  font-weight: 500;
  padding: 0.6rem 1.2rem;
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 25px;
  transition: all 0.3s ease;
  background: rgba(59, 130, 246, 0.1);
}

.service-link:hover {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(59, 130, 246, 0.3);
}

.product-card h3 {
  font-size: 1.6rem;
  margin-bottom: 1.2rem;
  color: #ffffff;
}

.product-card p.desc {
  color: #93c5fd;
  font-size: 1rem;
  margin-bottom: 1.6rem;
  line-height: 1.6;
}

.service-list {
  text-align: left;
  margin-bottom: 1.8rem;
}

.service-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.8rem;
  font-size: 0.9rem;
  color: #a0bffa;
  white-space: nowrap;
  overflow: hidden;
}

.service-item a {
  color: #a0bffa;
  text-decoration: none;
  transition: all 0.3s ease;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-right: 10px;
}

.service-item a:hover {
  color: #60a5fa;
  transform: translateX(3px);
}

.service-item span:first-child {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-right: 10px;
}

.service-item .price {
  color: #60a5fa;
  font-weight: 600;
}

.view-more {
  display: inline-block;
  color: #3b82f6;
  font-size: 1rem;
  text-decoration: none;
  font-weight: 500;
}

.view-more:hover {
  color: #60a5fa;
  transform: translateX(5px);
}

/* 技术优势 */
.tech {
  padding: 8rem 5% 6rem;
  text-align: center;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.tech-content {
  max-width: 1080px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.tech .tech-list {
  margin-top: 2rem;
  position: relative;
  z-index: 2;
}

.tech h2 {
  font-size: 2.8rem;
  margin-bottom: 1.6rem;
  color: #ffffff;
}

.tech p {
  color: #93c5fd;
  font-size: 1.2rem;
  margin-bottom: 3rem;
}

.tech-list {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
}

.tech-item {
  flex: 1;
  min-width: 280px;
  padding: 1.8rem;
  background: rgba(15, 15, 35, 0.8);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 12px;
  transition: all 0.4s ease;
  backdrop-filter: blur(10px);
}

.tech-item:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: #6366f1;
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

.tech-item h4 {
  font-size: 1.4rem;
  color: #ffffff;
  margin-bottom: 0.8rem;
}

.tech-item p {
  color: #a5b4fc;
}

/* 行业应用 */
.industries {
  padding: 8rem 5% 6rem;
  text-align: center;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.industries .tags {
  margin-top: 2rem;
  position: relative;
  z-index: 2;
}

.industries h2 {
  font-size: 2.8rem;
  margin-bottom: 2rem;
  color: #ffffff;
}

.tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.4rem;
  max-width: 1000px;
  margin: 0 auto;
}

.tag {
  background: rgba(99, 102, 241, 0.1);
  color: #a5b4fc;
  padding: 0.8rem 1.6rem;
  border-radius: 60px;
  font-size: 1.1rem;
  border: 1px solid rgba(99, 102, 241, 0.3);
  transition: all 0.3s ease;
}

.tag:hover {
  background: rgba(99, 102, 241, 0.2);
  color: #ffffff;
  transform: scale(1.05);
  box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
}

/* 页脚 */
.footer-section {
  padding: 6rem 2rem 4rem;
  text-align: center;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 2;
}

.footer-section-left {
  text-align: left;
  padding-right: 1rem;
}

.footer-section-center {
  text-align: center;
  padding: 0 1rem;
}

.footer-section-right {
  text-align: right;
  padding-left: 1rem;
}

.footer-note {
  text-align: center;
  color: #a5b4fc;
  font-size: 1rem;
  position: relative;
  z-index: 2;
}

.footer-note strong {
  color: #ffffff;
}

.footer-note p {
  margin-bottom: 1rem;
  text-shadow: 0 0 10px rgba(165, 180, 252, 0.3);
}

.footer-title {
  font-size: 1.4rem;
  color: #ffffff;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

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

.footer-links li {
  margin-bottom: 0.8rem;
}

.footer-links a {
  color: #a5b4fc;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: #6366f1;
}

.footer-contact {
  color: #a5b4fc;
  line-height: 1.8;
}

.footer-contact p {
  margin-bottom: 0.5rem;
}

.footer-menu {
  margin-bottom: 1.5rem;
  text-align: center;
}

.footer-menu-item {
  display: inline-block;
  color: #6366f1;
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 500;
  padding: 0.8rem 1.5rem;
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  transition: all 0.3s ease;
  background: rgba(99, 102, 241, 0.1);
}

.footer-menu-item:hover {
  background: rgba(99, 102, 241, 0.2);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
}

/* 弹窗样式 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: #12182c;
  border: 1px solid #3b82f6;
  border-radius: 16px;
  width: 90%;
  max-width: 420px;
  padding: 2.5rem;
  text-align: center;
  transform: scale(0.9);
  transition: transform 0.3s ease;
  box-shadow: 0 20px 40px rgba(59, 130, 246, 0.3);
  color: #f0f9ff;
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  color: #ffffff;
}

.modal p {
  color: #60a5fa;
  margin-bottom: 1.8rem;
  font-size: 1.1rem;
}

.modal-btn {
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
  color: white;
  border: none;
  padding: 0.8rem 2rem;
  font-size: 1rem;
  border-radius: 50px;
  cursor: pointer;
}

.modal-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(59, 130, 246, 0.5);
}

/* 响应式设计 */
@media (max-width: 1200px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .tab-nav {
    gap: 0.8rem;
  }
  
  .tab-btn {
    padding: 0.7rem 1.2rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 768px) {
  nav ul {
    gap: 1.5rem;
  }
  
  .logo {
    font-size: 1.2rem;
  }
  
  .cta-button {
    padding: 1rem 2rem;
    font-size: 1rem;
  }

  .service-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .tab-nav {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }
  
  .tab-btn {
    width: 100%;
    max-width: 300px;
    text-align: center;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .feature-cards-container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .tech-list {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .tags {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}