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

:root {
  --primary-color: #00d4ff;
  --primary-dark: #0099cc;
  --primary-light: #33e0ff;
  --bg-dark: #0a0e27;
  --bg-darker: #050816;
  --bg-card: #1a1f3a;
  --text-light: #e0e6ed;
  --text-gray: #a0aec0;
  --border-color: #2d3748;
  --shadow: 0 4px 20px rgba(0, 212, 255, 0.15);
  --shadow-hover: 0 8px 40px rgba(0, 212, 255, 0.3);
  --glow: 0 0 20px rgba(0, 212, 255, 0.5);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--text-light);
  line-height: 1.6;
  background: var(--bg-dark);
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: 0;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: 250px;
  height: 100vh;
  background: rgba(10, 14, 39, 0.98);
  backdrop-filter: blur(10px);
  border-right: 1px solid rgba(0, 212, 255, 0.2);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  padding: 2rem 0;
  box-shadow: 2px 0 20px rgba(0, 212, 255, 0.1);
}

.sidebar .logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 2rem 2rem;
  border-bottom: 1px solid rgba(0, 212, 255, 0.1);
  margin-bottom: 2rem;
}

.sidebar .logo img {
  height: 50px;
  width: auto;
  filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
}

.nav-links {
  list-style: none;
  flex: 1;
  padding: 0 1rem;
}

.nav-links li {
  margin-bottom: 0.5rem;
}

.nav-links a {
  display: block;
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  padding: 1rem 1.5rem;
  border-radius: 8px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.nav-links a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary-color), var(--primary-light));
  transform: scaleY(0);
  transition: transform 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
  background: rgba(0, 212, 255, 0.1);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.8);
}

.nav-links a:hover::before,
.nav-links a.active::before {
  transform: scaleY(1);
}

.main-content {
  margin-left: 250px;
  min-height: 100vh;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1001;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-light);
  background: rgba(10, 14, 39, 0.95);
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.captcha-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 8, 22, 0.98);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
}

.captcha-box {
  background: var(--bg-card);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 12px;
  padding: 3rem;
  text-align: center;
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.2);
  max-width: 400px;
  width: 90%;
  position: relative;
  overflow: hidden;
}

.captcha-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

.captcha-box h2 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.5rem;
  position: relative;
  z-index: 1;
}

.captcha-box p {
  color: var(--text-gray);
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

.captcha-question {
  font-size: 2rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.captcha-input {
  width: 100%;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 4px;
  font-size: 1.25rem;
  text-align: center;
  color: var(--text-light);
  margin-bottom: 1.5rem;
  transition: all 0.3s;
  position: relative;
  z-index: 1;
}

.captcha-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.captcha-btn {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
  position: relative;
  z-index: 1;
}

.captcha-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 212, 255, 0.5);
}

.captcha-error {
  color: #ff4757;
  margin-top: 1rem;
  font-size: 0.875rem;
  display: none;
  position: relative;
  z-index: 1;
}

.hero {
  background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
  color: var(--text-light);
  padding: 6rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
  position: relative;
  z-index: 1;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  position: relative;
  z-index: 1;
}

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 600;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 212, 255, 0.5);
}

section {
  padding: 4rem 0;
  position: relative;
  z-index: 1;
}

.section-title {
  text-align: center;
  font-size: 2.25rem;
  margin-bottom: 3rem;
  color: var(--text-light);
  font-weight: 600;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  box-shadow: 0 0 10px var(--primary-color);
}

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

.feature-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid rgba(0, 212, 255, 0.2);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

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

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

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  color: white;
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
  position: relative;
  z-index: 1;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-light);
  position: relative;
  z-index: 1;
}

.feature-card p {
  color: var(--text-gray);
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.product-card {
  background: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(0, 212, 255, 0.2);
  transition: all 0.3s;
}

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

.product-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 153, 204, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--primary-color);
  position: relative;
  overflow: hidden;
}

.product-image::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(0, 212, 255, 0.1), transparent);
  animation: shine 3s infinite;
}

@keyframes shine {
  0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
  100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.product-info {
  padding: 1.5rem;
}

.product-info h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.product-info p {
  color: var(--text-gray);
  margin-bottom: 1rem;
}

.product-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: all 0.3s;
}

.product-link:hover {
  color: var(--primary-light);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.8);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.solution-card {
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: 8px;
  border: 1px solid rgba(0, 212, 255, 0.2);
  transition: all 0.3s;
  border-left: 4px solid var(--primary-color);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: linear-gradient(180deg, var(--primary-color), var(--primary-light));
  transition: height 0.3s;
}

.solution-card:hover::before {
  height: 100%;
}

.solution-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.solution-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-light);
}

.solution-card p {
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.solution-card ul {
  list-style: none;
  margin-top: 1rem;
}

.solution-card ul li {
  padding: 0.5rem 0;
  color: var(--text-gray);
  position: relative;
  padding-left: 1.5rem;
}

.solution-card ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.news-card {
  background: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(0, 212, 255, 0.2);
  transition: all 0.3s;
}

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

.news-image {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 153, 204, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--primary-color);
}

.news-content {
  padding: 1.5rem;
}

.news-date {
  color: var(--text-gray);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.news-content h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.news-content p {
  color: var(--text-gray);
  margin-bottom: 1rem;
}

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

.contact-info {
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: 8px;
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-light);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.contact-item-content h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
  color: var(--text-light);
}

.contact-item-content p {
  color: var(--text-gray);
}

.contact-form {
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: 8px;
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.contact-form h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-light);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-light);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 4px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text-light);
  transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

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

footer {
  background: var(--bg-darker);
  color: var(--text-light);
  padding: 3rem 0 1rem;
  border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.footer-section p,
.footer-section a {
  color: var(--text-gray);
  text-decoration: none;
  line-height: 2;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: var(--primary-color);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 212, 255, 0.1);
  color: var(--text-gray);
}

.page-header {
  background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
  color: var(--text-light);
  padding: 3rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
}

.page-header p {
  font-size: 1.125rem;
  opacity: 0.9;
  position: relative;
  z-index: 1;
}

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

  .sidebar {
    left: -250px;
    transition: left 0.3s;
  }

  .sidebar.active {
    left: 0;
  }

  .main-content {
    margin-left: 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

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

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

  .section-title {
    font-size: 1.75rem;
  }

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