body,
html {
  margin: 0;
  padding: 0;
  font-family: 'Montserrat', sans-serif;
  color: #333;
  -webkit-font-smoothing: antialiased;
}

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

.wide-container {
  max-width: 1400px;
}

.main-header {
  background: #fff;
  padding: 15px 0;
  border-bottom: 1px solid #f0f0f0;
}

.main-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 60px;
  display: block;
}

.main-nav ul {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

.main-nav ul li {
  margin-left: 30px;
}

.main-nav ul li a {
  text-decoration: none;
  color: #333;
  font-size: 15px;
  font-weight: 400;
  transition: color 0.3s;
}

.main-nav ul li a:hover {
  color: #00ff00;
}

.hero-section {
  position: relative;
  height: 500px;
  background-size: cover;
  background-position: 50% 50%;
  display: flex;
  align-items: center;
  text-align: center;
  color: #fff;
}

.s-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(13, 14, 62, 0.35);
}

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

.hero-content h1 {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.2;
  max-width: 800px;
  margin: 0 auto;
}

.intro-section {
  padding: 30px 0;
  background: #fff;
  text-align: center;
}

.section-title {
  font-size: 28px;
  color: #2d30d1;
  margin-bottom: 50px;
  position: relative;
  padding-bottom: 15px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: #2d30d1;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.intro-item .icon {
  font-size: 50px;
  margin-bottom: 20px;
}

.intro-item p {
  font-size: 18px;
  font-weight: 400;
}

.guides-section {
  padding: 30px 0;
  background: #f9f9f9;
  text-align: center;
}

.guides-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.guide-card {
  background: #fff;
  padding: 30px;
  text-align: center;
  border-radius: 4px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.guide-card img {
  width: 80px;
  height: 80px;
  margin-bottom: 20px;
}

.guide-card h3 {
  font-size: 20px;
  margin-bottom: 15px;
  color: #2d30d1;
}

.guide-card p {
  font-size: 15px;
  margin-bottom: 25px;
  color: #666;
  height: 45px;
}

.s-common-button {
  display: inline-block;
  background: #00ff00;
  color: #fff;
  padding: 10px 25px;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 700;
  font-size: 14px;
}

.main-footer {
  background-color: #1a1b3a;
  color: #ffffff;
  padding: 50px 0 40px;
  font-family: 'Montserrat', sans-serif;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}

.footer-col h4 {
  color: #00ff00;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 25px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  color: #cbd5e0;
  text-decoration: none;
  font-size: 15px;
  transition: color 0.3s ease;
}

.footer-col ul li a:hover {
  color: #00ff00;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.social-icon {
  color: #cbd5e0;
  text-decoration: none;
  font-size: 15px;
  transition: transform 0.3s ease, color 0.3s ease;
}

.social-icon:hover {
  color: #00ff00;
  transform: translateX(5px);
}

.footer-divider {
  border: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 40px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-info {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-logo-img {
  height: 40px;
  filter: brightness(0) invert(1);
  opacity: 0.8;
}

.footer-bottom p {
  color: #718096;
  font-size: 14px;
  margin: 0;
}

.footer-tagline {
  font-style: italic;
}

.seo-content-section {
  padding: 30px 0;
  background-color: #ffffff;
  line-height: 1.8;
  color: #2d3748;
}

.seo-content-section h1 {
  font-size: 32px;
  color: #2d30d1;
  margin-bottom: 40px;
  font-weight: 700;
}

.seo-content-section h2 {
  font-size: 28px;
  color: #1a1b3a;
  margin-bottom: 20px;
  font-weight: 700;
}

.seo-content-section h3 {
  font-size: 24px;
  color: #1a1b3a;
  margin-top: 20px;
  margin-bottom: 20px;
  font-weight: 700;
}

.seo-content-section p {
  font-size: 17px;
  margin-bottom: 25px;
  text-align: justify;
}

@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: 32px;
  }
  .intro-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .seo-content-section {
    padding: 20px 0;
  }
  .seo-content-section h2 {
    font-size: 26px;
  }
  .seo-content-section p {
    font-size: 16px;
    text-align: left;
  }
  .main-header .container {
    flex-direction: column;
    gap: 15px;
  }
  .main-nav ul {
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
  }
  .main-nav ul li {
    margin-left: 0;
    margin: 0 10px;
  }
  .hero-section {
    height: 400px;
  }
  .hero-content h1 {
    font-size: 26px;
    padding: 0 10px;
  }
  .guides-grid {
    grid-template-columns: 1fr;
  }
  .footer-cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .section-title {
    font-size: 22px;
  }
  .intro-grid {
    grid-template-columns: 1fr;
  }
  .intro-item .icon {
    font-size: 40px;
  }
  .footer-cols {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .social-links {
    align-items: center;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .footer-info {
    flex-direction: column;
    gap: 10px;
  }
}