:root {
  --primary: #003366;
  --primary-light: #005a9c;
  --text-dark: #1e293b;
  --text-gray: #64748b;
  --bg-page: #f8fafc;
  --bg-section: #ffffff;
  --bg-accent: #e6f0ff;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --radius-md: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --spacing-xl: 80px;
  --spacing-lg: 60px;
  --spacing-md: 40px;
  --spacing-sm: 24px;
}

body {
  line-height: 1.7;
  color: #333;
  max-width: 960px; 
  margin: 0 auto;
  background:url(../images/bg_body.jpg) repeat-x;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Main Content */
main {
  padding: var(--spacing-lg) 0;
}

.section {
  padding: var(--spacing-md) 0;
}

.section-title {
  font-size: 2rem;
  color: var(--primary);
  text-align: center;
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

.section-subtitle {
  text-align: center;
  color: var(--text-gray);
  font-size: 1.15rem;
  max-width: 800px;
  margin: 0 auto 32px;
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.text-content h3 {
  font-size: 1.75rem;
  color: var(--primary);
  margin-bottom: 16px;
  font-weight: 600;
}

.text-content p {
  color: var(--text-gray);
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.icon-list {
  list-style: none;
  margin: 20px 0;
}

.icon-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--text-gray);
}

.icon-list li::before {
  content: "✓";
  color: var(--primary-light);
  font-weight: bold;
  font-size: 1.2rem;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 10px;
  margin-top: 32px;
}

.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  text-align: center;
}

.feature-icon {
  font-size: 3rem;
  color: var(--primary-light);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 16px;
  font-weight: 600;
}

.feature-card p {
  color: var(--text-gray);
  font-size: 1.05rem;
}

/* Stats Section */
.stats {
  background-color: var(--bg-accent);
  padding: var(--spacing-md) 0;
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  margin-top: 24px;
}

.stat-item h4 {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 8px;
  font-weight: 700;
}

.stat-item p {
  color: var(--text-gray);
  font-size: 1.15rem;
  margin: 0;
}

@media (max-width: 768px) {
  .hero h1 { font-size: 2.5rem; }
  .hero p { font-size: 1.15rem; }
  .section-title { font-size: 1.75rem; }
  .two-column { grid-template-columns: 1fr; }
  .feature-icon { font-size: 2.5rem; }
}