:root {
  /* Primary Colors - Speak English theme */
  --primary: #4A90D9;
  --primary-light: #6BA5E7;
  --primary-dark: #3A7BC8;

  /* Light Mode */
  --background: #FFFFFF;
  --surface: #F5F5F5;
  --text-primary: #212121;
  --text-secondary: #757575;
  --border: #E0E0E0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #121212;
    --surface: #1E1E1E;
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --border: #333333;
  }
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  padding: 0;
  margin: 0;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

.logo h1 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.lang-selector {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-primary);
}

.lang-btn:hover {
  background-color: var(--border);
}

.lang-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 4px;
  min-width: 180px;
  max-height: 300px;
  overflow-y: auto;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.lang-dropdown.show {
  display: block;
}

.lang-option {
  padding: 10px 16px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-primary);
}

.lang-option:hover {
  background-color: var(--border);
}

.lang-option.active {
  background-color: var(--primary);
  color: white;
}

.content-section {
  display: none;
}

.content-section.active {
  display: block;
}

main h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--text-primary);
}

main h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

main p {
  margin-bottom: 16px;
  color: var(--text-secondary);
}

main ul, main ol {
  margin-bottom: 16px;
  padding-left: 24px;
  color: var(--text-secondary);
}

main li {
  margin-bottom: 8px;
}

main a {
  color: var(--primary);
  text-decoration: none;
}

main a:hover {
  text-decoration: underline;
}

.effective-date {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background-color: var(--surface);
  border-radius: 12px;
  margin-top: 24px;
}

.contact-card .icon {
  font-size: 24px;
}

.contact-card .info h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-card .info p {
  font-size: 14px;
  margin-bottom: 0;
}

.faq-item {
  margin-bottom: 24px;
  padding: 20px;
  background-color: var(--surface);
  border-radius: 12px;
}

.faq-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.faq-item p {
  font-size: 14px;
  margin-bottom: 0;
}

footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 14px;
  color: var(--text-secondary);
}

@media (max-width: 640px) {
  .container {
    padding: 16px;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
  }

  .logo h1 {
    font-size: 1.125rem;
  }

  main h2 {
    font-size: 1.5rem;
  }

  main h3 {
    font-size: 1.125rem;
  }

  .contact-card {
    flex-direction: column;
    text-align: center;
  }
}