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

:root {
  --primary: #1e40af;
  --secondary: #059669;
  --accent: #dc2626;
  --neutral-900: #111827;
  --neutral-700: #374151;
  --neutral-200: #e5e7eb;
  --neutral-50: #f9fafb;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--neutral-700);
  background-color: var(--neutral-50);
}

/* Header & Navigation */
.header {
  background-color: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  padding: 1rem 0;
}

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

.logo-section {
  display: flex;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--neutral-900);
  font-weight: 600;
  font-size: 1.125rem;
}

.logo-img {
  height: 40px;
}

.logo-text {
  color: var(--primary);
}

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

.nav-link {
  text-decoration: none;
  color: var(--neutral-700);
  font-weight: 500;
  transition: color 0.3s ease;
  border-bottom: 2px solid transparent;
  padding-bottom: 0.25rem;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Main Container */
.container {
  max-width: 1200px;
  margin: 3rem auto;
  padding: 0 1rem;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 3rem;
  border-radius: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  margin-bottom: 3rem;
}

.hero-content h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.hero-content p {
  font-size: 1.125rem;
  line-height: 1.5;
}

.hero-icon {
  height: 100px;
  opacity: 0.8;
}

/* Sections */
.intro,
.cta-section,
.participate-section {
  background: white;
  padding: 2rem;
  border-radius: 0.75rem;
  margin-bottom: 2rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.intro p {
  font-size: 1.0625rem;
  line-height: 1.8;
}

.intro strong {
  color: var(--primary);
  font-weight: 600;
}

.intro a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid var(--primary);
}

.intro a:hover {
  text-decoration: underline;
}

/* Pillars Section */
.pillars {
  margin-bottom: 3rem;
  background: white;
  padding: 2rem;
  border-radius: 0.75rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.pillars h2 {
  font-size: 1.375rem;
  margin-bottom: 2rem;
  color: var(--neutral-900);
  line-height: 1.5;
}

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.pillar {
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.05), rgba(5, 150, 105, 0.05));
  padding: 1.5rem;
  border-radius: 0.75rem;
  border-left: 4px solid var(--primary);
}

.pillar h3 {
  color: var(--primary);
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.pillar p {
  color: var(--neutral-700);
  line-height: 1.6;
}

/* Links Lists */
.links-list {
  list-style: none;
  margin-top: 1.5rem;
}

.links-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--neutral-200);
}

.links-list li:last-child {
  border-bottom: none;
}

.links-list a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.links-list a:hover {
  text-decoration: underline;
}

/* Image Section */
.image-section {
  background: white;
  padding: 2rem;
  border-radius: 0.75rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  margin-top: 2rem;
}

.image-section img {
  width: 100%;
  height: auto;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
}

.image-caption {
  font-size: 0.95rem;
  color: var(--neutral-700);
  font-style: italic;
  text-align: center;
}

/* Footer */
.footer {
  background-color: var(--neutral-900);
  color: white;
  padding: 2rem;
  text-align: center;
  margin-top: 3rem;
}

.footer-content p {
  margin-bottom: 0.5rem;
}

.footer a {
  color: var(--secondary);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

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

  .nav-links {
    gap: 1rem;
    font-size: 0.95rem;
  }

  .hero {
    flex-direction: column;
    padding: 2rem;
  }

  .hero-content h1 {
    font-size: 1.5rem;
  }

  .hero-icon {
    height: 80px;
  }

  .pillars h2,
  .cta-section h2,
  .participate-section h2 {
    font-size: 1.25rem;
  }
}

@media (max-width: 640px) {
  .navbar-container {
    flex-direction: column;
    gap: 0.5rem;
  }

  .nav-links {
    flex-direction: column;
    gap: 0.5rem;
  }

  .hero {
    padding: 1.5rem;
  }

  .hero-content h1 {
    font-size: 1.25rem;
  }

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

  .container {
    margin: 1.5rem auto;
  }
}