*,:before,:after{box-sizing:border-box}html{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}body{color:#1a1a1a;-webkit-font-smoothing:antialiased;background:#fff;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Noto Sans JP,Yu Gothic,sans-serif;line-height:1.7}main{max-width:720px;margin:0 auto;padding:clamp(1.5rem,5vw,2.5rem) 1rem}h1{margin:0 0 1rem;font-size:clamp(1.6rem,4.5vw,2rem);line-height:1.3}h2{margin:2rem 0 .75rem;font-size:clamp(1.2rem,3vw,1.4rem);line-height:1.4}h3{margin:1.5rem 0 .5rem;font-size:1.1rem;line-height:1.4}p{margin:0 0 1rem}ul,ol{margin:0 0 1rem;padding-left:1.25rem}li{margin:.25rem 0}a{color:#0366d6;text-underline-offset:2px;text-decoration:underline}a:hover{text-decoration:none}hr{border:0;border-top:1px solid #e5e5e5;margin:2rem 0}img{max-width:100%;height:auto}.app-header{text-align:center;flex-direction:column;align-items:center;gap:.75rem;margin:1rem 0 1.5rem;display:flex}.app-header h1{margin:0}.app-header .catchphrase{color:#555;text-align:left;align-self:stretch;margin:0;font-size:1rem}.nav-back{margin-top:2rem;font-size:.95rem;display:inline-block}.meta{color:#777;font-size:.9rem}