/* ---------- Table of contents ---------- */
.lib-toc{display:flex;flex-wrap:wrap;gap:12px;padding:16px 0;border-bottom:1px solid var(--line)}
.lib-toc a{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.04em;text-transform:uppercase;padding:8px 14px;color:var(--ink);border:1px solid var(--line);transition:border-color .15s ease,color .15s ease}
.lib-toc a:hover{border-color:var(--indigo);color:var(--indigo)}

/* ---------- Sections ---------- */
.lib-section{padding:56px 0;border-bottom:1px solid var(--line)}

/* ---------- Glossary ---------- */
.lib-glossary{display:grid;grid-template-columns:minmax(160px,240px) 1fr;row-gap:18px;column-gap:32px;max-width:900px}
.lib-glossary dt{font-family:'Fraunces',serif;font-weight:600;font-size:16px;color:var(--ink)}
.lib-glossary dd{margin:0;font-size:14.5px;color:var(--ink-soft);line-height:1.6}

/* ---------- History / sources prose ---------- */
.lib-history-body{max-width:74ch}
.lib-history-body p{font-size:15px;color:var(--ink-soft);line-height:1.7;margin-bottom:18px}
.lib-history-body p:last-child{margin-bottom:0}
.lib-history-body a{color:var(--indigo);border-bottom:1px solid var(--indigo)}

/* ---------- Fibre comparison table ---------- */
.lib-table{width:100%;max-width:720px;border-collapse:collapse;margin-top:8px}
.lib-table th{text-align:left;font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft);padding:10px 16px 10px 0;border-bottom:1px solid var(--line)}
.lib-table td{font-size:14.5px;color:var(--ink);padding:12px 16px 12px 0;border-bottom:1px solid var(--line)}
.lib-table tr:first-child td{font-weight:600}
.lib-table-note{margin-top:14px;font-size:13px;color:var(--ink-soft);max-width:70ch}

/* ---------- Library directory ---------- */
.lib-directory{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.lib-card{display:flex;gap:18px;min-height:132px;padding:24px 22px;background:var(--fiber);transition:background .18s ease,transform .18s ease}
.lib-card:hover{background:#eee9dc;transform:translateY(-1px)}
.lib-card-num{font:400 10px/1.4 'IBM Plex Mono',monospace;color:var(--madder);padding-top:3px}
.lib-card strong{display:block;font-family:'Fraunces',serif;font-weight:500;font-size:18px;line-height:1.2;margin-bottom:8px}
.lib-card small{display:block;font-size:13px;line-height:1.5;color:var(--ink-soft);max-width:28ch}
.lib-section-compact{padding:46px 0}
.lib-section-intro{max-width:70ch;color:var(--ink-soft);font-size:15px;line-height:1.7;margin-bottom:24px}
.lib-resource-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.lib-resource{display:flex;flex-direction:column;gap:7px;min-height:150px;padding:22px;background:var(--fiber)}
.lib-resource:hover{background:#eee9dc}
.lib-resource strong{font-family:'Fraunces',serif;font-weight:500;font-size:17px;line-height:1.25}
.lib-resource span{font-size:13px;line-height:1.5;color:var(--ink-soft)}
.lib-resource em{margin-top:auto;font:400 9px/1.3 'IBM Plex Mono',monospace;text-transform:uppercase;letter-spacing:.05em;color:var(--madder);font-style:normal}
.lib-knowledge-detail{scroll-margin-top:20px}

/* ---------- Library dropdown ---------- */
.nav-dropdown{position:relative}
.nav-dropdown-toggle{display:inline-flex!important;align-items:center;gap:7px}
.nav-dropdown-toggle span{font-size:12px;line-height:1;transform:translateY(-1px)}
.nav-dropdown-menu{display:none;position:absolute;right:0;top:100%;padding-top:8px;min-width:245px;z-index:20}
.nav-dropdown-menu::before{content:"";position:absolute;top:8px;left:0;right:0;bottom:0;background:var(--indigo-deep);border:1px solid rgba(234,227,211,.18);box-shadow:0 12px 28px rgba(33,37,42,.16)}
.nav-dropdown-menu a{position:relative;display:block!important;background:transparent!important;border:0!important;color:var(--fiber)!important;padding:10px 14px!important;font-size:10px!important;white-space:nowrap}
.nav-dropdown-menu a:hover{background:var(--indigo)!important}
.nav-dropdown:hover .nav-dropdown-menu,.nav-dropdown:focus-within .nav-dropdown-menu{display:block}

@media (max-width:900px){
  .lib-directory{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lib-resource-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:700px){
  .lib-directory,.lib-resource-grid{grid-template-columns:1fr}
  .nav-dropdown-menu{left:0;right:auto}
  .lib-glossary{grid-template-columns:1fr;row-gap:4px}
  .lib-glossary dt{margin-top:14px}
}

/* ---------- Data & Statistics ---------- */
.lib-resource-wide{grid-column:1/-1}
.data-table-wrap{overflow-x:auto;margin-top:18px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.data-table{width:100%;min-width:980px;border-collapse:collapse;font-size:12px;line-height:1.5}
.data-table caption{text-align:left;padding:12px 0;font:400 9px/1.4 'IBM Plex Mono',monospace;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-soft)}
.data-table th,.data-table td{text-align:left;vertical-align:top;padding:11px 12px;border-top:1px solid var(--line)}
.data-table th{font:500 9px/1.35 'IBM Plex Mono',monospace;text-transform:uppercase;letter-spacing:.03em;color:var(--ink)}
.data-table td:first-child{font-family:'Fraunces',serif;font-size:15px}
.data-table td:nth-child(2),.data-table td:nth-child(3),.data-table td:nth-child(4){white-space:nowrap}
.data-note{max-width:90ch;margin:16px 0 0;font-size:12px;line-height:1.65;color:var(--ink-soft)}
.data-note strong{font-weight:500;color:var(--ink)}
@media(max-width:700px){.data-table{font-size:11px}.data-table th{font-size:8px}.data-table td:first-child{font-size:14px}}