/* Главный экран — разделы плитками; выбранный раздел — только его оборудование. */
.catalog-tiles{--catalog-ink:#022230;--catalog-muted:#40596B;--catalog-line:#CBD4DD;--catalog-bg:#F5F5F5;--catalog-paper:#FFFFFF;--catalog-panel:#e8eff3;--catalog-accent:#35798F;padding:24px 0 64px;color:var(--catalog-ink);font-family:Montserrat,Arial,sans-serif}
/* Затемнённый акцент и фон выбранной строки повторяют базу знаний: читаемые ссылки на светлом фоне. */
.catalog-tiles-page .main-nav{padding-bottom:10px}
.catalog-tiles h1{margin:0 0 32px;color:inherit;font:700 36px/1.2 Montserrat,Arial,sans-serif;text-transform:none}
.catalog-tiles-layout{display:grid;grid-template-columns:260px minmax(0,1fr);align-items:start;gap:40px}
.catalog-tiles-aside{position:sticky;top:20px;min-width:0}
.catalog-tiles-nav-head{padding:0 10px 18px}
.catalog-tiles-nav-head h2{margin:0 0 16px;color:inherit;font:700 19px/1.3 Montserrat,Arial,sans-serif;text-transform:none}
.catalog-search-field{position:relative}
.catalog-tiles .catalog-tiles-search{display:block;box-sizing:border-box;width:100%;height:36px;min-height:36px;padding:7px 36px 7px 10px;border:1px solid var(--catalog-line);border-radius:4px;background:var(--catalog-paper);color:var(--catalog-ink);font:400 13px/1.4 Montserrat,Arial,sans-serif;appearance:none;-webkit-appearance:none}
.catalog-tiles-search::-webkit-search-cancel-button{display:none}
.catalog-search-clear{position:absolute;right:4px;top:4px;display:grid;place-items:center;width:28px;height:28px;padding:0;border:0;border-radius:3px;background:transparent;color:var(--catalog-muted);font:22px/1 Arial,sans-serif;cursor:pointer}
.catalog-search-clear:hover{background:var(--catalog-panel)}
.catalog-tiles-tree{max-height:calc(100dvh - 225px);overflow-y:auto;scrollbar-width:thin;padding:2px 0}
.catalog-tiles-tree ul{margin:0;padding:0;list-style:none}
.catalog-tiles-tree li{margin:0;padding:0}
.catalog-tiles-nav-link{display:block;padding:10px 12px;border-radius:4px;color:var(--catalog-muted);font:500 14px/1.5 Montserrat,Arial,sans-serif;text-decoration:none;overflow-wrap:anywhere}
.catalog-tiles-nav-link:hover{background:var(--catalog-panel);color:var(--catalog-ink)}
.catalog-tiles-nav-link[aria-current]{background:var(--catalog-panel);box-shadow:inset 3px 0 var(--catalog-accent);color:var(--catalog-ink);font-weight:700}
.catalog-tiles-home{margin-bottom:5px}
.catalog-tiles-empty{margin:12px;color:var(--catalog-muted);font:400 14px/1.5 Montserrat,Arial,sans-serif}
.catalog-tiles-main{min-width:0;scroll-margin-top:24px}
.catalog-tiles-view>header{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:24px}
.catalog-tiles-view h2{margin:0;color:var(--catalog-ink);font:700 25px/1.3 Montserrat,Arial,sans-serif;text-transform:none;overflow-wrap:anywhere}
.catalog-tiles-section-page{flex-shrink:0;color:var(--catalog-muted);font:500 12px/1.5 Montserrat,Arial,sans-serif;text-decoration:none;white-space:nowrap}
.catalog-tiles-section-page:hover{color:var(--catalog-accent);text-decoration:underline;text-underline-offset:3px}
.catalog-tile-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.catalog-tile{display:flex;flex-direction:column;gap:18px;min-width:0;padding:18px;border:0;border-radius:4px;background:var(--catalog-paper);color:var(--catalog-ink);text-decoration:none}
.catalog-tile img{display:block;width:100%;height:145px;object-fit:contain}
.catalog-tile h3{margin:0;font:600 16px/1.4 Montserrat,Arial,sans-serif;text-transform:none;text-align:center;color:inherit;overflow-wrap:anywhere}
.catalog-tile:hover h3{color:var(--catalog-accent)}
.catalog-tiles a:focus-visible,.catalog-tiles input:focus-visible,.catalog-tiles button:focus-visible,.catalog-tiles summary:focus-visible{outline:2px solid var(--catalog-accent);outline-offset:3px}
.catalog-tiles-mobile{display:none}
.catalog-tiles [hidden]{display:none!important}
@media(max-width:1050px){.catalog-tiles-layout{grid-template-columns:230px minmax(0,1fr);gap:24px}.catalog-tile-grid{gap:16px}.catalog-tile{padding:14px}.catalog-tile img{height:125px}.catalog-tiles-view>header{display:block}.catalog-tiles-section-page{display:inline-block;margin-top:10px}}
@media(max-width:800px){.catalog-tiles-layout{display:block}.catalog-tiles-aside{display:none}.catalog-tiles-mobile{display:block;margin-bottom:24px;padding:12px 0;border-bottom:1px solid var(--catalog-line)}.catalog-tiles-mobile summary{cursor:pointer;font:600 15px/1.5 Montserrat,Arial,sans-serif}.catalog-tiles-mobile .catalog-tiles-nav-head{padding:16px 0 12px}.catalog-tiles-mobile .catalog-tiles-tree{max-height:50dvh}.catalog-tiles-main{scroll-margin-top:16px}}
@media(max-width:700px){.catalog-tile-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:480px){.catalog-tiles h1{font-size:28px;margin-bottom:20px}.catalog-tiles-view h2{font-size:23px}.catalog-tile-grid{grid-template-columns:1fr}.catalog-tile{padding:18px}.catalog-tile img{height:160px}}