.letter-hero{display:grid;grid-template-columns:1fr auto;gap:28px;padding:35px 0 28px;border-bottom:1px solid var(--line)}.letter-hero h1{font-size:clamp(28px,3.5vw,44px);letter-spacing:-1.5px;line-height:1.12;margin:10px 0 16px}.letter-hero p{max-width:770px;color:var(--muted);font-size:16px;line-height:1.65}.letter-glyph{font-size:94px;line-height:1;width:125px;height:125px;display:grid;place-items:center;color:#137f79;background:#e9f6f2;border:1px solid #cbe6df;border-radius:16px;font-weight:650}.letter-counts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:24px 0}.letter-counts>div{padding:19px 22px;background:white}.letter-counts strong{display:block;font-size:27px;color:var(--navy);letter-spacing:-.8px}.letter-counts span{font-size:12px;color:var(--muted)}.letter-nav{display:flex;flex-wrap:wrap;gap:7px;margin:20px 0}.letter-nav a{width:35px;min-height:35px;display:grid;place-items:center;border:1px solid var(--line);border-radius:5px;font-size:14px;font-weight:600;background:white}.letter-nav a[aria-current=page],.letter-nav a:hover{background:var(--navy);color:white;border-color:var(--navy)}.letter-examples{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:12px 0 28px}.letter-example{border:1px solid var(--line);padding:15px 17px;border-radius:7px;background:white;overflow-wrap:anywhere}.letter-example a{font-weight:600;color:var(--teal)}.letter-example span{display:block;color:var(--muted);font-size:12px;margin-top:7px}.letter-filter{padding:22px;border:1px solid var(--line);border-radius:9px 9px 0 0;background:#f1f6f5}.letter-search-line{display:flex;gap:9px;align-items:flex-end}.letter-search-line label{flex:1}.letter-filter label{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:600;color:var(--navy)}.letter-filter input,.letter-filter select{background:white;border:1px solid #b9cbc9;padding:11px 12px;border-radius:5px;font:14px inherit;width:100%;min-height:43px;color:var(--navy)}.letter-filter select{font-size:13px}.letter-selects{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-top:14px}.letter-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap;margin:24px 0 15px}.letter-toolbar h2{margin:0}.letter-toolbar p{margin:6px 0 0;font-size:13px;color:var(--muted)}.letter-toolbar .button{font-size:12px}.letter-table{width:100%;border-collapse:collapse;table-layout:fixed;background:white}.letter-table th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);padding:13px 15px;border-bottom:1px solid var(--line);background:#f7f9fa}.letter-table td{padding:17px 15px;border-bottom:1px solid var(--line);vertical-align:top;overflow-wrap:anywhere;font-size:13px;line-height:1.55}.letter-table th:first-child{width:46%}.letter-table th:nth-child(2){width:17%}.letter-table th:nth-child(3){width:23%}.letter-table th:last-child{width:14%}.letter-table .name-link{font-size:14px}.letter-cas,.letter-formula{font-family:var(--mono)}.letter-sub{display:block;font-family:var(--sans,Arial,sans-serif);color:var(--muted);font-size:11px;margin-top:4px;line-height:1.5}.letter-star{background:#edf4f3;color:#17645d;padding:3px 6px;border-radius:3px;font-size:10px;font-weight:600}.letter-table details{margin-top:8px;font-size:11px}.letter-table summary{color:var(--teal);cursor:pointer}.letter-detail{font-size:12px;line-height:1.75;padding-top:7px}.letter-detail a{color:var(--teal);text-decoration:underline}.letter-status{padding:12px 16px;background:white;border:1px solid var(--line);border-top:0;color:var(--muted);font-size:12px}.letter-pages{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin:23px 0}.letter-pages a,.letter-pages>span{border:1px solid var(--line);background:white;padding:9px 13px;border-radius:4px;font-size:12px}.letter-pages [aria-current=page]{background:var(--navy);color:white}.letter-pages button:disabled{opacity:.4;cursor:default}.letter-notes{border-top:1px solid var(--line);margin:35px 0;padding:25px 0}.letter-notes h2{font-size:19px}.letter-notes h3{font-size:14px;margin-top:20px}.letter-notes p{color:var(--muted);line-height:1.8;font-size:13px;max-width:900px}.letter-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:25px 0}.letter-card{background:white;border:1px solid var(--line);padding:23px;border-radius:8px;display:block}.letter-card:hover{border-color:var(--teal)}.letter-card strong{font-size:35px;display:block;color:var(--teal)}.letter-card b{display:block;font-size:14px;margin:10px 0}.letter-card span{color:var(--muted);font-size:12px;display:block;line-height:1.8}.letter-banner{padding:22px;border:1px solid #cbe6df;background:#edf7f3;border-radius:9px;margin:25px 0}.letter-banner h2{margin:0 0 9px}.letter-banner p{color:var(--muted);line-height:1.65;font-size:13px}.letter-banner .letter-nav{margin-bottom:0}@media(max-width:700px){.letter-hero{grid-template-columns:1fr;padding:24px 0}.letter-glyph{display:none}.letter-counts>div{padding:15px 10px}.letter-counts strong{font-size:23px}.letter-examples{grid-template-columns:1fr 1fr}.letter-grid{grid-template-columns:1fr 1fr}.letter-selects{grid-template-columns:1fr}.letter-filter{padding:16px}.letter-table th,.letter-table td{padding:13px 8px;font-size:11px}.letter-table .name-link{font-size:12px}.letter-table th:first-child{width:42%}.letter-table th:nth-child(2){width:20%}.letter-table th:nth-child(3){width:23%}.letter-table th:last-child{width:15%}.letter-table td:last-child .letter-sub{display:none}.letter-search-line{flex-wrap:wrap}.letter-search-line label{min-width:190px}.letter-card{padding:17px}.letter-toolbar .inline-actions{flex-wrap:wrap}.letter-hero h1{letter-spacing:-.7px}.letter-table details summary{font-size:10px}}@media print{.letter-filter,.letter-nav,.letter-pages,.letter-toolbar .inline-actions{display:none}.letter-table details{display:none}.letter-table{font-size:9pt}.letter-table tr{break-inside:avoid}}