:root {
  --primary-color: #00f0ff;
  --secondary-color: #0a192f;
  --text-primary: #ffffff;
  --text-secondary: #8892b0;
  --accent-color: #64ffda;
  --gradient-primary: linear-gradient(135deg, #00f0ff 0%, #00a3ff 100%);
  --nav-height: 80px;
}

body {
  background-color: var(--secondary-color);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

/* Header/Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(10, 25, 47, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: baseline;
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--primary-color);
}

/* Hero Section */
.hero-section {
  min-height: calc(100vh - var(--nav-height));
  padding-top: calc(var(--nav-height) + 10rem);
  padding-bottom: 2rem;
}

.hero-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  z-index: 1;
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero-title span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-image {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.hero-image img {
  width: 100%;
  height: auto;
  max-height: 500px;
  object-fit: contain;
}

.hero-image::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0.1;
  border-radius: 20px;
}

/* Features Section */
.features-section {
  padding: 8rem 0;
  background: rgba(255, 255, 255, 0.02);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 4rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.feature-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  padding: 2rem;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: 0 10px 30px rgba(0, 240, 255, 0.1);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.feature-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.3s ease;
  min-width: 120px;
  height: 42px;
}

.button-primary {
  background: var(--gradient-primary);
  color: var(--secondary-color);
}

.button-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 240, 255, 0.2);
}

.button-secondary {
  background: transparent;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.button-secondary:hover {
  background: rgba(0, 240, 255, 0.1);
  transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-title {
    font-size: 3rem;
  }

  .hero-subtitle {
    margin: 0 auto 2rem;
  }

  .hero-image {
    order: -1;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

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

  .section-title {
    font-size: 2rem;
  }
}

/* FAQ Section */
.faq-section {
  padding: 8rem 0;
  background: rgba(255, 255, 255, 0.01);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}

.faq-item {
  margin-bottom: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  overflow: hidden;
}

.faq-question {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.3s ease;
}

.faq-question:hover {
  background: rgba(255, 255, 255, 0.08);
}

.faq-answer {
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-answer.active {
  padding: 1.5rem;
  max-height: 500px;
}

/* Contact Section */
.contact-section {
  padding: 8rem 0;
  background: linear-gradient(
    to bottom,
    var(--secondary-color),
    rgba(10, 25, 47, 0.95)
  );
}

.contact-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-icon {
  font-size: 1.5rem;
  color: var(--primary-color);
}

/* Footer */
.footer {
  background: rgba(10, 25, 47, 0.98);
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
}

.footer-col h4 {
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  font-size: 1.2rem;
}

.footer-col p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

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

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

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  margin-top: 4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
}

@media (max-width: 1024px) {
  .contact-container {
    grid-template-columns: 1fr;
  }

  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Contact Form */
.contact-form {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(0, 240, 255, 0.2);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--text-secondary);
}

.contact-form button {
  width: 100%;
  padding: 1rem;
  margin-top: 1rem;
}

/* Cases Section */
.cases-section {
  padding: 8rem 0;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0.01)
  );
}

.cases-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
  margin-top: 4rem;
}

.case-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.case-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 240, 255, 0.1);
  border-color: var(--primary-color);
}

.case-image {
  width: 100%;
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.case-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, transparent, rgba(10, 25, 47, 0.9));
}

.case-content {
  padding: 2rem;
}

.case-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(0, 240, 255, 0.1);
  color: var(--primary-color);
  border-radius: 20px;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.case-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.case-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.metric {
  text-align: center;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.metric-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Solutions Section */
.solutions-section {
  padding: 8rem 0;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.02),
    transparent
  );
}

.solutions-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6rem 3rem;
  margin-top: 4rem;
}

.solution-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  padding: 3rem;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 2rem;
}

.solution-card:hover {
  transform: translateY(-15px);
  border-color: var(--primary-color);
  box-shadow: 0 20px 40px rgba(0, 240, 255, 0.1);
}

.solution-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto;
  background: rgba(0, 240, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.solution-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.solution-title {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin: 0;
}

.solution-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* 响应式优化 */
@media (max-width: 1200px) {
  .solutions-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6rem 2rem;
  }

  .solution-card {
    padding: 2.5rem;
  }
}

@media (max-width: 768px) {
  .solutions-container {
    padding: 0 1.5rem;
  }

  .solutions-grid {
    grid-template-columns: 1fr;
    gap: 6rem 1.5rem;
    margin-top: 3rem;
  }

  .solution-card {
    padding: 2rem;
    gap: 1.5rem;
  }

  .solution-icon {
    width: 60px;
    height: 60px;
    font-size: 2rem;
  }
}

/* Technology Section */
.technology-section {
  padding: 8rem 0;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(255, 255, 255, 0.02)
  );
}

.tech-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

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

.tech-content {
  padding-right: 2rem;
}

.tech-title {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tech-description {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 1.1rem;
  line-height: 1.8;
}

.tech-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.tech-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.tech-item-icon {
  width: 40px;
  height: 40px;
  background: rgba(0, 240, 255, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

.tech-image {
  position: relative;
}

.tech-image img {
  width: 100%;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.tech-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0.1;
  border-radius: 20px;
}

@media (max-width: 1024px) {
  .tech-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .tech-content {
    padding-right: 0;
  }

  .tech-list {
    justify-content: center;
  }

  .tech-item {
    justify-content: center;
  }
}

/* 响应式布局 */
@media (max-width: 1200px) {
  .hero-container,
  .features-grid,
  .cases-grid,
  .contact-container {
    padding: 0 1rem;
  }

  .hero-title {
    font-size: 3rem;
  }
}

@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }

  .hero-image {
    order: -1;
  }

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

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

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

  .contact-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

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

@media (max-width: 768px) {
  .nav-container {
    padding: 0 1rem;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--secondary-color);
    flex-direction: column;
    padding: 1rem;
    gap: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
  }

  .nav-links.active {
    display: flex;
    animation: slideIn 0.3s ease forwards;
  }

  .menu-button {
    display: block;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: all 0.3s ease;
  }

  .menu-button:hover {
    color: var(--primary-color);
  }

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

  .hero-subtitle {
    font-size: 1rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    padding: 1.5rem;
  }

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

  .footer-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }
}

/* 移动端菜单按钮 */
.menu-button {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  transition: all 0.3s ease;
}

.menu-button:hover {
  color: var(--primary-color);
}

@media (max-width: 768px) {
  .menu-button {
    display: block;
  }
}

/* 移动端动画 */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.nav-links.active {
  animation: slideIn 0.3s ease forwards;
}

/* 优化触摸体验 */
@media (hover: none) {
  .nav-link,
  .button,
  .feature-card,
  .case-card,
  .solution-card {
    -webkit-tap-highlight-color: transparent;
  }

  .button:active,
  .feature-card:active,
  .case-card:active,
  .solution-card:active {
    transform: scale(0.98);
  }
}

/* 加载优化 */
.hero-image img,
.case-image img,
.tech-image img {
  transition: opacity 0.3s ease;
}

.hero-image img[loading],
.case-image img[loading],
.tech-image img[loading] {
  opacity: 0;
}

/* 性能优化 */
* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  backface-visibility: hidden;
}

/* Hero Section 响应式优化 */
.hero-section {
  min-height: calc(100vh - var(--nav-height));
  padding-top: calc(var(--nav-height) + 10rem);
  padding-bottom: 2rem;
}

.hero-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-image {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.hero-image img {
  width: 100%;
  height: auto;
  max-height: 500px;
  object-fit: contain;
}

/* 响应式断点优化 */
@media (max-width: 1200px) {
  .hero-container {
    gap: 2rem;
    padding: 0 1.5rem;
  }

  .hero-image {
    max-width: 500px;
  }

  .hero-title {
    font-size: 3.5rem;
  }
}

@media (max-width: 992px) {
  .hero-section {
    min-height: auto;
    padding-top: calc(var(--nav-height) + 6rem);
    padding-bottom: 1rem;
  }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }

  .hero-image {
    max-width: 400px;
    order: -1;
  }

  .hero-image img {
    max-height: 400px;
  }

  .hero-title {
    font-size: 3rem;
  }

  .hero-subtitle {
    margin: 0 auto 2rem;
    max-width: 500px;
  }

  .hero-buttons {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .hero-section {
    padding-top: calc(var(--nav-height) + 4rem);
  }

  .hero-container {
    padding: 0 1rem;
  }

  .hero-image {
    max-width: 300px;
  }

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

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

  .hero-subtitle {
    font-size: 1rem;
    max-width: 400px;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
  }

  .hero-buttons .button {
    width: 100%;
    margin: 0 !important;
  }
}

@media (max-width: 480px) {
  .hero-image {
    max-width: 250px;
  }

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

  .hero-title {
    font-size: 2rem;
  }
}

/* 优化图片加载 */
.hero-image img {
  transition: opacity 0.3s ease;
}

.hero-image img[loading] {
  opacity: 0;
}

.hero-image.loaded img {
  opacity: 1;
}

/* 修改按钮样式 */
.hero-buttons {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.3s ease;
  min-width: 120px;
  height: 42px;
}

.button-primary {
  background: var(--gradient-primary);
  color: var(--secondary-color);
}

.button-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 240, 255, 0.2);
}

.button-secondary {
  background: transparent;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.button-secondary:hover {
  background: rgba(0, 240, 255, 0.1);
  transform: translateY(-2px);
}

/* 移动端按钮样式 */
@media (max-width: 768px) {
  .hero-buttons {
    flex-direction: column;
    gap: 0.75rem;
  }

  .button {
    width: 100%;
    max-width: 200px;
  }
}

@media (max-width: 480px) {
  .button {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    height: 38px;
  }
}

html {
  scroll-behavior: smooth;
}

/* 在文件末尾添加登录按钮样式 */
.login-button {
  background: var(--gradient-primary);
  color: var(--secondary-color);
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
}

.login-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 240, 255, 0.2);
}

@media (max-width: 768px) {
  .login-button {
    width: 100%;
    margin: 0.5rem 0;
    padding: 0.75rem;
    text-align: center;
  }
}

/* 在文件末尾添加或修改登录按钮样式 */
.nav-links .button {
  margin: 0; /* 移除按钮默认边距 */
  height: auto; /* 覆盖默认按钮高度 */
  padding: 0.5rem 1.5rem; /* 调整内边距以匹配导航链接 */
  display: inline-flex;
  align-items: center;
}

@media (max-width: 768px) {
  .nav-links .button {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    margin: 0.5rem 0;
  }
}