:root{
--primary:#7A2E1D;--accent:#C97B2B;--surface:#FBF7F1;--text:#241A15;
--muted:#7d6f66;--border:#e0d5c8;--radius:10px;--shadow:0 2px 10px rgba(36,26,21,.09);
--sans:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;--serif:Georgia,"Times New Roman",serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--surface);color:var(--text);font-family:var(--sans);font-size:1rem;line-height:1.65;-webkit-text-size-adjust:100%}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(1.7rem,1.2rem + 2.4vw,2.6rem)}
h2{font-size:clamp(1.35rem,1.1rem + 1.2vw,1.8rem)}
h3{font-size:clamp(1.1rem,1rem + .6vw,1.3rem);color:var(--primary)}
p,ul,ol,dl{margin:0 0 1.1em}
a{color:var(--primary);text-decoration-thickness:1px;text-underline-offset:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
img{max-width:100%;height:auto;display:block}
svg{width:1em;height:1em;vertical-align:-.125em}

/* header + subnav */
.jlb-head{background:var(--surface);border-bottom:1px solid var(--border)}
.jlb-bar{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;max-width:1120px;margin:0 auto;padding:.85rem 1rem}
.jlb-logo{font-weight:800;font-size:1.15rem;color:var(--primary);text-decoration:none;letter-spacing:-.01em}
.jlb-logo small{display:block;font-size:.7rem;font-weight:500;color:var(--muted);letter-spacing:.02em}
.jlb-nav{margin-left:auto}
.jlb-navlist{display:none;list-style:none;margin:0;padding:0;gap:1.1rem}
.jlb-navlist.jlb-open{display:flex;flex-direction:column;width:100%;padding:.5rem 0 0}
.jlb-navlink{color:var(--text);text-decoration:none;font-size:.92rem;font-weight:600;padding:.25rem 0}
.jlb-navlink:hover{color:var(--accent)}
.jlb-toggle{display:inline-flex;align-items:center;gap:.4rem;background:none;border:1px solid var(--border);color:var(--primary);border-radius:var(--radius);padding:.4rem .7rem;font:inherit;font-size:.85rem;font-weight:600;cursor:pointer}
.jlb-toggle[aria-expanded="true"]{background:var(--primary);color:var(--surface);border-color:var(--primary)}
.jlb-sub{background:var(--primary);color:var(--surface)}
.jlb-subinner{max-width:1120px;margin:0 auto;padding:.6rem 1rem;display:flex;gap:1.2rem;overflow-x:auto;scrollbar-width:thin}
.jlb-sublink{color:#f3e2d2;text-decoration:none;font-size:.85rem;white-space:nowrap;padding:.15rem 0;border-bottom:2px solid transparent}
.jlb-sublink[aria-current="true"],.jlb-sublink:hover{color:#fff;border-bottom-color:var(--accent)}

/* breadcrumb */
.breadcrumb{max-width:1120px;margin:0 auto;padding:.75rem 1rem 0;font-size:.82rem;color:var(--muted)}
.breadcrumb__list{list-style:none;display:flex;flex-wrap:wrap;gap:.35rem;margin:0;padding:0}
.breadcrumb__item+.breadcrumb__item::before{content:"/";margin-right:.35rem;color:var(--border)}
.breadcrumb__link{color:var(--muted);text-decoration:none}
.breadcrumb__link:hover{color:var(--primary);text-decoration:underline}

/* layout */
.jlb-main{max-width:1120px;margin:0 auto;padding:0 1rem 3rem;display:block}
.jlb-col{max-width:42rem}
.jlb-hero{padding:1.5rem 0 1rem;border-bottom:1px solid var(--border)}
.jlb-summary{background:#fff;border:1px solid var(--border);border-left:5px solid var(--accent);border-radius:var(--radius);padding:1rem 1.15rem;box-shadow:var(--shadow);max-width:42rem}
.jlb-summary h2{margin:0 0 .4em;font-size:1rem;text-transform:uppercase;letter-spacing:.06em;color:var(--accent)}
.jlb-summary ul{margin:0;padding-left:1.1rem;font-size:.95rem}
.jlb-sec{padding:1.9rem 0;border-bottom:1px solid var(--border)}
.jlb-sec:last-of-type{border-bottom:0}
.jlb-p{max-width:42rem}
.jlb-note{font-size:.85rem;color:var(--muted)}
.jlb-list{max-width:42rem;padding-left:1.15rem}
.jlb-list li{margin-bottom:.45rem}
.jlb-check{list-style:none;padding-left:0;max-width:42rem}
.jlb-check li{position:relative;padding-left:1.6rem;margin-bottom:.5rem}
.jlb-check li::before{content:"\2713";position:absolute;left:0;top:0;color:var(--accent);font-weight:800}

/* tables */
.jlb-tablewrap{overflow-x:auto;max-width:100%;border:1px solid var(--border);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
.jlb-table{border-collapse:collapse;width:100%;font-size:.9rem;min-width:34rem}
.jlb-table caption{text-align:left;padding:.75rem 1rem;font-weight:700;color:var(--primary);background:#f6ece0;border-bottom:1px solid var(--border);font-size:.92rem}
.jlb-table th,.jlb-table td{padding:.6rem .85rem;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
.jlb-table thead th{background:var(--primary);color:var(--surface);font-size:.82rem;text-transform:uppercase;letter-spacing:.04em}
.jlb-table tbody tr:nth-child(even){background:#fdfaf6}
.jlb-table tbody tr:last-child td{border-bottom:0}

/* glossary */
.jlb-gloss{margin:0;max-width:42rem}
.jlb-gloss dt{font-weight:700;color:var(--primary);margin-top:.9rem}
.jlb-gloss dd{margin:.15rem 0 0;padding-left:0;color:var(--text);font-size:.95rem}

/* faq */
.jlb-faq{border:1px solid var(--border);border-radius:var(--radius);background:#fff;max-width:42rem;overflow:hidden}
.jlb-faqitem{border-bottom:1px solid var(--border)}
.jlb-faqitem:last-child{border-bottom:0}
.jlb-faqitem summary{cursor:pointer;padding:.85rem 1.1rem;font-weight:600;display:flex;justify-content:space-between;gap:.6rem;align-items:baseline}
.jlb-faqitem summary::after{content:"+";color:var(--accent);font-weight:800;font-size:1.2rem;line-height:1}
.jlb-faqitem[open] summary::after{content:"\2212"}
.jlb-faqitem summary:hover{background:#f9f1e6}
.jlb-faqbody{padding:0 1.1rem 1rem;color:var(--muted);font-size:.95rem;max-width:42rem}

/* pitfalls callout */
.jlb-pit{background:#fdf4e8;border:1px solid var(--accent);border-radius:var(--radius);padding:1rem 1.15rem;max-width:42rem}
.jlb-pit h3{margin-top:0}

/* links / cta */
.jlb-link{display:inline-block;margin-top:.4rem;font-weight:700;color:var(--primary);text-decoration:underline}
.jlb-link:hover{color:var(--accent)}

/* footer */
.jlb-foot{background:var(--text);color:#efe6dd;padding:2.2rem 1rem 1.5rem;margin-top:1rem}
.jlb-footin{max-width:1120px;margin:0 auto;display:flex;flex-wrap:wrap;gap:2rem}
.jlb-footcol{flex:1 1 12rem}
.jlb-footcol h3{font-size:.85rem;text-transform:uppercase;letter-spacing:.07em;color:var(--accent);margin-bottom:.6rem}
.jlb-footlist{list-style:none;margin:0;padding:0}
.jlb-footlist li{margin-bottom:.4rem}
.jlb-footlink{color:#e9ded4;text-decoration:none;font-size:.9rem}
.jlb-footlink:hover{color:#fff;text-decoration:underline}
.jlb-authornote{max-width:1120px;margin:1.6rem auto 0;padding-top:1rem;border-top:1px solid rgba(255,255,255,.18);font-size:.8rem;color:#c9bab0}

/* to top */
.jlb-top{position:fixed;right:1rem;bottom:1rem;z-index:20;background:var(--primary);color:var(--surface);border:0;border-radius:999px;width:2.8rem;height:2.8rem;font:inherit;font-size:1.1rem;cursor:pointer;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s}
.jlb-top.jlb-vis{opacity:1;visibility:visible}
.jlb-top:hover{background:var(--accent)}

/* images */
.jlb-img{opacity:0;transition:opacity .3s}
.jlb-img.jlb-vis{opacity:1}

@media (min-width:760px){
.jlb-toggle{display:none}
.jlb-navlist{display:flex;flex-direction:row;width:auto;padding:0}
.jlb-col{max-width:42rem}
.jlb-main{padding-bottom:4rem}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}