/* Справочник теории · Xudoyorxon Bunyodov / Худоёрхон Бунёдов */
.th { max-width: 1100px; margin: 0 auto; padding: 4px 0 96px; }
.th-head h1 { margin: 0; font-size: 24px; }
.th-sub { color: #6B7B88; font-size: 13px; margin: 4px 0 12px; }
.th-find { width: 100%; padding: 11px 14px; font-size: 14px; border: 1.5px solid #D6DEE5; border-radius: 11px; }
.th-find:focus { outline: none; border-color: #1B5E20; }
.th-grid { display: grid; gap: 14px; grid-template-columns: 1fr; margin-top: 14px; }
@media (min-width: 900px) { .th-grid { grid-template-columns: 280px minmax(0, 1fr); align-items: start; } .th-nav { position: sticky; top: 74px; max-height: 76vh; overflow-y: auto; } }
.th-nav { display: grid; gap: 4px; }
.th-nav__i { display: flex; align-items: center; gap: 9px; padding: 9px 11px; border-radius: 10px;
  border: 1px solid #E1E8ED; background: #fff; text-decoration: none; color: #23303a; font-size: 13.5px; }
.th-nav__i:hover { border-color: #9FC3DA; background: #F7FBFE; }
.th-nav__i.is-on { border-color: #1B5E20; background: #F1F8F2; font-weight: 600; }
.th-nav__i b { width: 24px; height: 24px; flex: 0 0 24px; border-radius: 7px; background: #EEF3F7;
  display: flex; align-items: center; justify-content: center; font-size: 12px; }
.th-nav__i span { flex: 1 1 auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.th-nav__i i { font-style: normal; font-size: 11.5px; color: #9AA8B4; }
.th-body { border: 1px solid #E1E8ED; border-radius: 14px; background: #fff; padding: 18px 22px; }
.th-ch { font-size: 20px; margin: 0 0 10px; color: #1B5E20; }
.th-intro { color: #55636E; font-size: 13.5px; }
.th-part { padding: 12px 0; border-top: 1px solid #EEF3F7; font-size: 14.5px; line-height: 1.65; }
.th-part h3 { margin: 0 0 6px; font-size: 15.5px; color: #23303a; }
.th-from { font-size: 12px; color: #9AA8B4; margin-bottom: 4px; }
[data-theme="dark"] .th-nav__i, [data-theme="dark"] .th-body { background: #1E2A33; border-color: #2E4150; color: #DDE7EE; }
.th-books { display: flex; flex-wrap: wrap; gap: 7px; margin: 8px 0 10px; }
.th-book { padding: 7px 14px; border-radius: 999px; border: 1px solid #D6DEE5; background: #fff;
  cursor: pointer; font-size: 13px; color: #35485A; }
.th-book:hover { border-color: #9FC3DA; }
.th-book.is-on { background: #1B5E20; border-color: #1B5E20; color: #fff; font-weight: 600; }
.th-fig { margin: 12px 0; }
.th-fig img { display: block; max-width: 100%; border: 1px solid #E6ECF1; border-radius: 11px; background: #fff; }
.th-fig figcaption { font-size: 12.5px; color: #6B7B88; margin-top: 6px; font-style: italic; }
[data-theme="dark"] .th-book { background: #1E2A33; border-color: #2E4150; color: #DDE7EE; }