* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; color: #1f2937; line-height: 1.8; -webkit-font-smoothing: antialiased; }
.container { max-width: 720px; margin: 0 auto; padding: 0 24px; }
nav { padding: 16px 0; background: #fff; border-bottom: 1px solid #f3f4f6; position: sticky; top: 0; z-index: 100; }
nav .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.3rem; font-weight: 900; color: #1d4ed8; text-decoration: none; display: flex; align-items: center; gap: 8px; }
.back { text-decoration: none; color: #6b7280; font-size: 0.9rem; font-weight: 500; }
.back:hover { color: #111827; }
.content { padding: 48px 0 80px; }
h1 { font-size: 2rem; font-weight: 800; margin-bottom: 8px; letter-spacing: -0.5px; }
.updated { color: #9ca3af; font-size: 0.85rem; margin-bottom: 40px; }
h2 { font-size: 1.2rem; font-weight: 700; margin-top: 36px; margin-bottom: 12px; color: #111827; }
p { margin-bottom: 16px; color: #374151; font-size: 0.95rem; }
ul { margin-bottom: 16px; padding-left: 24px; }
ul li { margin-bottom: 8px; color: #374151; font-size: 0.95rem; }
.highlight { background: #eff6ff; border-left: 4px solid #3b82f6; padding: 16px 20px; border-radius: 0 8px 8px 0; margin: 20px 0; }
.highlight p { margin-bottom: 0; color: #1e3a5f; font-weight: 500; }
a { color: #2563eb; }
footer { padding: 32px 0; background: #111827; color: #6b7280; text-align: center; font-size: 0.8rem; }