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

:root {
  --primary-blue: #003366;
  --secondary-blue: #0055a5;
  --accent-orange: #ff6b35;
  --text-dark: #1a1a2e;
  --text-light: #6b7280;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --border-color: #e2e8f0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
}

a {
  text-decoration: none;
  color: inherit;
}

/* Header */
.header {
  background-color: var(--bg-white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.logo span {
  color: var(--accent-orange);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  color: white;
  padding: 5rem 2rem;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.btn-primary {
  display: inline-block;
  background-color: var(--accent-orange);
  color: white;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 107, 53, 0.4);
}

/* Section Styles */
.section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2rem;
  color: var(--primary-blue);
  text-align: center;
  margin-bottom: 3rem;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: white;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--primary-blue);
}

.feature-card p {
  color: var(--text-light);
}

/* Steps Section */
.steps-container {
  background: var(--bg-white);
  border-radius: 16px;
  padding: 3rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.step {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.step:last-child {
  margin-bottom: 0;
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--accent-orange);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--primary-blue);
}

.step-content p {
  color: var(--text-light);
}

/* Download Section */
.download-section {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  color: white;
  text-align: center;
  padding: 4rem 2rem;
  margin: 4rem 0;
  border-radius: 16px;
}

.download-section h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.download-section p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* Keywords Section */
.keywords-section {
  background: var(--bg-white);
  padding: 3rem 2rem;
  text-align: center;
}

.keywords {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  max-width: 800px;
  margin: 0 auto;
}

.keyword-tag {
  background: var(--bg-light);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  color: var(--text-light);
  font-size: 0.9rem;
}

/* Footer */
.footer {
  background: var(--primary-blue);
  color: white;
  padding: 3rem 2rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-section h4 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.7);
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

/* About Page */
.about-hero {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  color: white;
  padding: 4rem 2rem;
  text-align: center;
}

.about-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.about-content h2 {
  color: var(--primary-blue);
  font-size: 1.8rem;
  margin: 2rem 0 1rem;
}

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

.disclaimer {
  background: #fff3cd;
  border: 1px solid #ffc107;
  border-radius: 8px;
  padding: 1.5rem;
  margin: 2rem 0;
}

.disclaimer h3 {
  color: #856404;
  margin-bottom: 0.5rem;
}

.disclaimer p {
  color: #856404;
  margin: 0;
}

/* Privacy Page */
.privacy-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.privacy-content h1 {
  color: var(--primary-blue);
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
}

.privacy-content h2 {
  color: var(--primary-blue);
  font-size: 1.4rem;
  margin: 2rem 0 1rem;
}

.privacy-content p,
.privacy-content ul {
  color: var(--text-light);
  margin-bottom: 1rem;
}

.privacy-content ul {
  padding-left: 1.5rem;
}

.privacy-content li {
  margin-bottom: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

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

  .section-title {
    font-size: 1.5rem;
  }

  .step {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}