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

body {
  background: #fff;
  color: #374151;
  font-family: 'Plus Jakarta Sans', -apple-system, sans-serif;
  line-height: 1.7;
  padding: 48px 24px 80px;
}

.container {
  max-width: 680px;
  margin: 0 auto;
}

.lang-switch {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 14px;
  color: #6B7280;
  text-decoration: none;
  border: 1px solid #E5E7EB;
  padding: 6px 14px;
  border-radius: 8px;
  transition: all 0.2s;
}

.lang-switch:hover {
  color: #111;
  border-color: #D1D5DB;
}

h1 {
  font-size: 32px;
  font-weight: 700;
  color: #111;
  margin-bottom: 8px;
}

.updated {
  font-size: 14px;
  color: #9CA3AF;
  margin-bottom: 32px;
}

.intro {
  font-size: 15px;
  color: #6B7280;
  margin-bottom: 40px;
}

h2 {
  font-size: 20px;
  font-weight: 700;
  color: #111;
  margin-top: 48px;
  margin-bottom: 16px;
}

h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-top: 32px;
  margin-bottom: 12px;
}

p, li {
  font-size: 15px;
  color: #374151;
  margin-bottom: 12px;
}

ul, ol {
  padding-left: 20px;
  margin-bottom: 16px;
}

li {
  margin-bottom: 6px;
}

strong {
  color: #111;
  font-weight: 600;
}

a {
  color: #2563EB;
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #1D4ED8;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 14px;
}

th {
  text-align: left;
  padding: 10px 12px;
  background: #F9FAFB;
  color: #111;
  font-weight: 600;
  border-bottom: 1px solid #E5E7EB;
}

td {
  padding: 10px 12px;
  border-bottom: 1px solid #F3F4F6;
  color: #374151;
}

hr {
  border: none;
  border-top: 1px solid #F3F4F6;
  margin: 32px 0;
}

.back-home {
  display: inline-block;
  margin-top: 48px;
  font-size: 14px;
  color: #9CA3AF;
  text-decoration: none;
  transition: color 0.2s;
}

.back-home:hover {
  color: #111;
}

@media (max-width: 480px) {
  h1 { font-size: 26px; }
  h2 { font-size: 18px; }
  h3 { font-size: 15px; }
  body { padding: 32px 16px 60px; }
  table { font-size: 13px; }
  th, td { padding: 8px; }
}