:root{--color-bg:#f2f2f2;--color-text:#111111;--color-border:#111111;--color-a:#1900ff;--color-a-hover:#ae00ff}*,*::before,*::after{box-sizing:border-box}body{margin:0 auto;max-width:920px;padding:0 16px;background-color:var(--color-bg);color:var(--color-text);font-family:"source serif 4",plex sans,segoe ui,sans-serif;line-height:1.45}nav{text-align:center;padding:16px 0;border-bottom:1px solid var(--color-border)}main{padding:8px 0}h1{margin:16px 0 8px}h2,h3,h4,h5,h6{margin:18px 0 10px}p{margin:0 0 14px}ul,ol{padding-left:20px}li{margin:.25rem 0}a,a:visited{color:var(--color-a)}a:hover{color:var(--color-a-hover)}footer{margin-top:16px;padding:16px 0;border-top:1px solid var(--color-border)}@media(max-width:640px){body{padding:0 14px}nav,footer{padding:14px 0}}