:root{color-scheme:light;--paper: #fbfaf6;--ink: #141412;--ink-soft: #4a4a46;--grey: #9c9b95;--grey-light: #d9d8d2;--grey-fill: #e9e8e2;--blob: #e2e1db;--accent: #ff6a1f;--accent-ink: #fff7f2;--column: 560px;--gutter: clamp(18px, 5vw, 32px);font-family:system-ui,-apple-system,SF Pro Text,Helvetica Neue,PingFang SC,Hiragino Sans GB,Noto Sans CJK SC,sans-serif;background:var(--paper)}*{box-sizing:border-box}html,body{margin:0;min-width:320px;min-height:100vh;color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;line-height:1.55}a{color:inherit;text-decoration:none}h1,h2,h3,p,ol,figure{margin:0}ol{padding:0;list-style:none}.step-shell{position:relative;width:min(var(--column),100%);margin:0 auto;padding:0 var(--gutter) 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