:root{--bg: #efe7d8;--fg: #2a2118;--fg-dim: #6c6151;--green: #2f4a3e;--brass: #7c621f;--rail-w: 210px;--font-display: "Lora", serif;--font-mono: "JetBrains Mono", monospace}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font-display);font-size:17px;line-height:1.7}img{max-width:100%;display:block}h1,h2,h3{font-family:var(--font-display);margin:0}.hidden-field{position:absolute;left:-9999px}.chapter-rail{position:fixed;top:0;right:0;bottom:0;width:var(--rail-w);padding:28px 22px;display:flex;flex-direction:column;border-left:1px solid rgba(42,33,24,.15);z-index:40;background:var(--bg)}.chapter-rail__brand{font-family:var(--font-display);font-weight:600;font-size:18px;text-decoration:none;color:var(--fg);margin-bottom:2.6rem}.chapter-rail ol{list-style:none;margin:0;padding:0;flex:1}.chapter-rail li{margin-bottom:1rem}.chapter-rail 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