:root{
  --ink:#171512; --muted:#6d6358; --paper:#fbf8f1; --panel:#fffdf8; --line:#ded2c0;
  --accent:#7a2d22; --accent2:#163b35; --gold:#b08b3e; --blue:#234d6d;
}
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a{color:var(--accent);text-decoration:none;border-bottom:1px dotted rgba(122,45,34,.45)} a:hover{border-bottom-style:solid}.layout{display:grid;grid-template-columns:290px 1fr;min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;overflow:auto;padding:24px 18px;background:#ede3d4;border-right:1px solid var(--line)}.brand{font-variant:small-caps;letter-spacing:.08em;font-weight:bold;color:var(--accent2);font-size:.95rem}.side-title{font-size:1.25rem;line-height:1.2;margin:8px 0 20px}.navgroup{margin:18px 0}.navgroup h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 7px}.navgroup a{display:block;margin:7px 0;border:0;color:var(--ink);font-size:.94rem}.navgroup a:hover{color:var(--accent)}main{max-width:920px;padding:48px 64px 80px}.crumbs{font-size:.85rem;color:var(--muted);margin-bottom:22px}.doc-type{display:inline-block;padding:4px 9px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.07em}h1{font-size:2.45rem;line-height:1.08;margin:14px 0 8px;color:#201b16}h2{font-size:1.65rem;line-height:1.2;margin:42px 0 14px;padding-top:18px;border-top:1px solid var(--line);color:var(--accent2)}h3{font-size:1.22rem;margin:30px 0 10px;color:var(--blue)}p{margin:0 0 14px}.subtitle{font-size:1.1rem;color:var(--muted);margin-bottom:26px}.toc{background:var(--panel);border:1px solid var(--line);padding:18px 22px;border-radius:14px;margin:30px 0}.toc h2{margin:0 0 10px;padding:0;border:0;font-size:1.1rem}.toc ol{margin:0;padding-left:21px}.toc li{margin:4px 0}.xref,.principle,.sourcebox,.note{background:var(--panel);border:1px solid var(--line);border-left:5px solid var(--gold);padding:14px 18px;border-radius:12px;margin:22px 0}.xref h3,.principle h3,.note h3{margin:0 0 8px;font-size:.95rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.principle{border-left-color:var(--accent2);font-size:1.05rem}.principle p{margin:5px 0}.sourcebox{font-size:.88rem;color:var(--muted);border-left-color:#8b8b8b}.lead-in{font-weight:bold;color:var(--accent2);margin-top:18px}.bullet{margin-left:22px}.download{display:inline-block;padding:9px 12px;background:var(--accent2);color:#fff;border-radius:8px;border:0;margin-top:6px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:24px 0}.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px}.card h2,.card h3{border:0;padding:0;margin:0 0 8px}.small{font-size:.9rem;color:var(--muted)}.map-table{width:100%;border-collapse:collapse;background:var(--panel);margin:24px 0}.map-table th,.map-table td{border:1px solid var(--line);padding:10px;vertical-align:top}.map-table th{background:#f2eadf;text-align:left}.toplink{font-size:.85rem;margin-top:30px}.old-library{background:#f6efe5;border:1px dashed var(--line);padding:12px;border-radius:12px;margin-top:20px}@media(max-width:850px){.layout{display:block}.sidebar{position:relative;height:auto}.sidebar .navgroup{display:inline-block;vertical-align:top;margin-right:20px}main{padding:28px 22px}}
@media print{.sidebar{display:none}.layout{display:block}main{max-width:none;padding:20px}a{color:inherit;border:0}.xref,.toc,.card{break-inside:avoid}}

.heading-back{font-size:.72rem;font-weight:600;margin-left:.75rem;text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:.18rem .48rem;color:var(--muted);background:var(--panel)}
.heading-back:hover{color:var(--accent);border-color:var(--accent)}