:root {
  --primary: #0F2B4B;
  --secondary: #EAECEE;
  --accent: #FF7E00;
  --success: #38C172;
  --text: #333;
  --light: rgba(255, 255, 255, 0.8);
  --glass: rgba(255, 255, 255, 0.6);
  --shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Montserrat', 'Open Sans', sans-serif;
}

body {
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: var(--text);
  line-height: 1.6;
  padding: 0;
  margin: 0;
  overflow-x: hidden;
}

header {
  position: relative;
  height: 80vh;
  max-height: 800px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('https://images.gptkong.com/demo/sample1.png') center/cover no-repeat;
}

.header-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 43, 75, 0.5);
  backdrop-filter: blur(5px);
}

.header-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.header-content h1 {
  font-size: 3rem;
  color: white;
  margin-bottom: 1rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header-content p {
  font-size: 1.2rem;
  color: white;
  margin-bottom: 2rem;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(to bottom, rgba(15, 43, 75, 0.8), rgba(15, 43, 75, 0.5));
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(15, 43, 75, 0.95);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.nav-links a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--primary);
  text-align: center;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 100px;
  height: 4px;
  background: linear-gradient(to right, var(--accent), var(--success));
  margin: 1rem auto;
  border-radius: 2px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.card {
  background: var(--glass);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.card img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 1.5rem;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.card:hover img {
  transform: scale(1.03);
}

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

.card p {
  margin-bottom: 1.5rem;
}

.button {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  background: var(--accent);
  color: white;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.button:hover {
  background: #E67600;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(255, 126, 0, 0.3);
}

.feature-section {
  background: url('https://images.gptkong.com/demo/sample3.png') center/cover no-repeat;
  position: relative;
  padding: 5rem 0;
  margin: 5rem 0;
}

.feature-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(5px);
}

.feature-content {
  position: relative;
  z-index: 2;
}

.parallax {
  background: url('https://images.gptkong.com/demo/sample5.png') center/cover no-repeat fixed;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 5rem 0;
  position: relative;
}

.parallax-content {
  background: var(--glass);
  backdrop-filter: blur(10px);
  padding: 3rem;
  border-radius: 15px;
  max-width: 800px;
  text-align: center;
  box-shadow: var(--shadow);
}

.parallax-content h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: white;
}

.parallax-content p {
  color: white;
  margin-bottom: 2rem;
}

.code-block {
  background: rgba(15, 43, 75, 0.9);
  border-radius: 10px;
  padding: 1.5rem;
  margin: 2rem 0;
  overflow: hidden;
}

.code-block pre {
  margin: 0;
  color: #f8f8f2;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: var(--glass);
  backdrop-filter: blur(10px);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

th {
  background: rgba(15, 43, 75, 0.8);
  color: white;
  font-weight: 600;
}

tr:hover {
  background: rgba(255, 255, 255, 0.1);
}

footer {
  background: var(--primary);
  color: white;
  padding: 3rem 0;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 2rem 0;
}

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

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

.notice {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--glass);
  backdrop-filter: blur(10px);
  padding: 1rem;
  border-radius: 10px;
  box-shadow: var(--shadow);
  z-index: 1000;
  animation: fadeIn 0.5s ease;
}

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

@media (max-width: 768px) {
  .header-content h1 {
    font-size: 2rem;
  }
  
  .header-content p {
    font-size: 1rem;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .parallax {
    height: 300px;
  }
}

@media (max-width: 480px) {
  .navbar {
    padding: 1rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .parallax-content {
    padding: 1.5rem;
  }
}