* {
  box-sizing: border-box;
}

:root {
  --bg1: #f8fafc;
  --card: #ffffff;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

/* Policy page specific styles */
body {
  padding-top: 3.75rem;
  background: var(--card);
  font-family: "Avenir Next", "Segoe UI Variable", "PingFang SC", "Noto Sans SC", sans-serif;
  line-height: 1.6;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: white;
  padding: 0.5rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

.portal-link {
  color: #007bff;
  text-decoration: none;
  font-weight: 600;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.nav-container {
  display: flex;
  gap: 0.9375rem;
  min-width: 12.5rem;
  justify-content: center;
}

.policy-nav a {
  color: #666;
  text-decoration: none;
  padding: 0.375rem 0.75rem;
  border-radius: 0.25rem;
  transition: all 0.2s;
  font-size: clamp(0.88rem, 0.25vw + 0.82rem, 0.98rem);
  white-space: nowrap;
}

.policy-nav a:hover {
  background: #f0f0f0;
  color: #333;
}

.language-toggle {
  display: flex;
  gap: 0.3125rem;
  border: 1px solid #ddd;
  border-radius: 0.375rem;
  padding: 0.125rem;
  background: #f9f9f9;
}

.lang-btn {
  padding: 0.3125rem 0.75rem;
  border: none;
  background: transparent;
  color: #666;
  cursor: pointer;
  border-radius: 0.25rem;
  font-size: clamp(0.86rem, 0.2vw + 0.8rem, 0.95rem);
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}

.lang-btn:hover {
  background: #e9e9e9;
  color: #333;
}

.content-container {
  max-width: 50rem;
  margin: 0 auto;
  padding: 1.25rem;
}

section {
  padding-top: 3rem;
  padding-left: 2rem;
  padding-bottom: 1rem;
  background: linear-gradient(180deg, var(--bg1), #e0e7ff);
}

/* Policy content typography */
h1 {
  font-size: clamp(1.55rem, 2.2vw, 1.95rem);
  margin-bottom: 1rem;
  color: #2c3e50;
  font-weight: 600;
}

h2 {
  font-size: clamp(1.2rem, 1.4vw, 1.45rem);
  margin: 1.25rem 0 0.75rem;
  color: #34495e;
  font-weight: 600;
}

p {
  font-size: clamp(0.96rem, 0.4vw + 0.85rem, 1.05rem);
  margin-bottom: 0.75rem;
}

ul {
  padding-left: 1.25rem;
  margin-bottom: 0.75rem;
}

li {
  font-size: clamp(0.96rem, 0.4vw + 0.85rem, 1.05rem);
  margin-bottom: 0.375rem;
}

.policy-divider {
  border: 0;
  height: 1px;
  margin: 0;
  background: linear-gradient(to right, transparent, #d1d5db, transparent);
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bg1: #0f172a;
    --card: #1e293b;
  }

  body {
    color: #f8fafc;
  }

  .site-header {
    background: #1e293b;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
  }

  .policy-nav a {
    color: #ccc;
  }

  .policy-nav a:hover {
    background: #333;
    color: white;
  }

  .language-toggle {
    background: #333;
    border-color: #555;
  }

  .lang-btn {
    color: #ccc;
  }

  .lang-btn:hover {
    background: #444;
    color: white;
  }

  h1 {
    color: #f8fafc;
  }

  h2 {
    color: #e2e8f0;
  }

  .policy-divider {
    background: linear-gradient(to right, transparent, #444, transparent);
  }
}

/* Responsive */
@media (max-width: 48rem) {
  body {
    padding-top: 6.25rem;
    background: var(--card);
  }

  .content-container {
    padding: 1rem;
  }

  section {
    padding-top: 2.25rem;
    padding-left: 1rem;
    padding-bottom: 0.75rem;
  }
}