:root {
  --primary: #6366f1;
  --bg: #ffffff;
  --bg-alt: #f9fafb;
  --text: #1f2937;
  --text-light: #6b7280;
  --border: #e5e7eb;
  --radius-sm: 8px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  line-height: 1.7;
  background: var(--bg);
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Language Bar */
.language-bar {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}

.language-select {
  font-family: inherit;
  font-size: 14px;
  padding: 6px 32px 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  cursor: pointer;
  transition: all 0.2s;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L2 4h8z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.language-select:hover {
  border-color: var(--primary);
}

.language-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Navigation */
.nav {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.brand-link {
  text-decoration: none;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.brand-link:hover {
  color: var(--primary);
}

/* Main Content */
.main {
  padding: 60px 0 100px;
}

.content h1 {
  font-size: 48px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.updated {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 48px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--border);
}

section {
  margin-bottom: 48px;
}

section h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  margin-top: 40px;
}

section h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  margin-top: 24px;
}

section p {
  font-size: 16px;
  margin-bottom: 16px;
  line-height: 1.8;
}

section ul {
  margin: 16px 0 16px 24px;
  line-height: 1.8;
}

section li {
  font-size: 16px;
  margin-bottom: 8px;
}

strong {
  font-weight: 600;
  color: var(--text);
}

.footer-note {
  margin-top: 60px;
  padding: 24px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--primary);
}

.footer-note p {
  font-size: 15px;
  color: var(--text-light);
  margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
  .content h1 {
    font-size: 36px;
  }

  section h2 {
    font-size: 24px;
  }

  section h3 {
    font-size: 20px;
  }

  .main {
    padding: 40px 0 60px;
  }
}