.opening-trainer_trainer__2y__k{width:100%;max-width:1080px;min-width:0;margin:0 auto;container-type:inline-size}.opening-trainer_trainer__2y__k a,.opening-trainer_trainer__2y__k button,.opening-trainer_trainer__2y__k input,.opening-trainer_trainer__2y__k select,.opening-trainer_trainer__2y__k summary{font:inherit}.opening-trainer_trainer__2y__k button,.opening-trainer_trainer__2y__k input,.opening-trainer_trainer__2y__k select,.opening-trainer_trainer__2y__k summary{min-height:44px}.opening-trainer_trainer__2y__k button{white-space:normal}.opening-trainer_trainer__2y__k :is(button,select,input,summary,a):focus-visible{outline:2px solid var(--accent);outline-offset:3px}.opening-trainer_toolbar__Mu3tj{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:12px 24px;padding-bottom:16px}.opening-trainer_openingPicker__nu_jd{display:grid;gap:6px;flex:1 1 220px;min-width:0}.opening-trainer_openingPicker__nu_jd label,.opening-trainer_searchLabel__8G_Iy{color:var(--muted);font-size:.8125rem;font-weight:600}.opening-trainer_openingPicker__nu_jd select,.opening-trainer_search__scMxM{width:100%;min-width:0;padding:10px 12px;border:1px solid var(--border-strong,var(--border));border-radius:var(--r-sm,4px);background:var(--surface);color:var(--text)}.opening-trainer_workspace__UVcvl{display:grid;grid-template-areas:"heading" "board" "lesson";grid-template-columns:minmax(0,1fr);gap:20px;align-items:start}.opening-trainer_lessonHeading__K2H8S{grid-area:heading;min-width:0}.opening-trainer_recommendation__J9oZ_{display:inline-block;margin-bottom:6px;color:var(--accent);font-size:.8125rem;font-weight:700}.opening-trainer_lessonHeading__K2H8S h2{margin:0;font-size:clamp(1.3rem,3.1cqi,1.8rem);line-height:1.3;letter-spacing:-.025em;overflow-wrap:anywhere}.opening-trainer_lessonHeading__K2H8S p{max-width:44ch;margin:8px 0 0;color:var(--muted);font-size:.875rem;line-height:1.6}.opening-trainer_boardColumn__L760k{grid-area:board;width:100%;max-width:660px;min-width:0;justify-self:center}.opening-trainer_boardMeta__DMPIm{display:flex;flex-wrap:wrap;justify-content:space-between;gap:4px 12px;padding-bottom:10px;font-size:.8125rem;font-variant-numeric:tabular-nums}.opening-trainer_boardMeta__DMPIm>:last-child{color:var(--muted)}.opening-trainer_boardWrap__EBYlg{width:100%;min-width:0}.opening-trainer_boardWrap__EBYlg .cg-wrap.rovian-board{width:100%;max-width:100%;aspect-ratio:1}.opening-trainer_status__vm5yl{display:flex;align-items:center;justify-content:center;min-height:60px;padding:12px 4px;font-size:.875rem;line-height:1.5;text-align:center;overflow-wrap:anywhere}.opening-trainer_status__vm5yl[data-correcting]{color:var(--danger)}.opening-trainer_boardControls__p5BLV{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.opening-trainer_boardControls__p5BLV button{padding:9px 14px;font-size:.8125rem}.opening-trainer_lessonPanel__lj3uo{grid-area:lesson;display:grid;gap:24px;min-width:0}.opening-trainer_modePicker__KTkWD{min-width:0;padding:0;margin:0;border:0}.opening-trainer_modePicker__KTkWD legend{padding:0;margin-bottom:10px;font-size:.875rem;font-weight:700}.opening-trainer_modeOptions__H0bOq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.opening-trainer_modeOptions__H0bOq button{display:grid;gap:4px;padding:12px;border:1px solid var(--border-strong,var(--border));border-radius:var(--r-sm,4px);background:var(--surface);color:var(--text);text-align:left;cursor:pointer}.opening-trainer_modeOptions__H0bOq button:active,.opening-trainer_modeOptions__H0bOq button:hover{background:var(--surface-2)}.opening-trainer_modeOptions__H0bOq button[aria-pressed=true]{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);background:var(--accent-soft)}.opening-trainer_modeOptions__H0bOq strong{font-size:.9375rem}.opening-trainer_modeOptions__H0bOq span{color:var(--muted);font-size:.75rem;line-height:1.4;overflow-wrap:anywhere}.opening-trainer_setProgress__yT58a{display:grid;gap:8px;margin:0;font-size:.8125rem}.opening-trainer_setProgress__yT58a progress{width:100%;height:6px;accent-color:var(--accent)}.opening-trainer_completion__Tu_pa{display:grid;gap:12px;padding-left:16px;border-left:3px solid var(--success)}.opening-trainer_completion__Tu_pa h3,.opening-trainer_completion__Tu_pa p{margin:0;font-size:.9375rem;line-height:1.5}.opening-trainer_completion__Tu_pa p{color:var(--muted);font-size:.8125rem}.opening-trainer_completion__Tu_pa a{text-align:center}.opening-trainer_nextLesson____Nmn{min-width:0;padding-top:20px;border-top:1px solid var(--border)}.opening-trainer_nextLesson____Nmn p{margin:0 0 10px;color:var(--muted);font-size:.8125rem}.opening-trainer_nextLesson____Nmn button{display:grid;justify-items:start;gap:6px;width:100%;padding:12px 14px;text-align:left;white-space:normal;overflow-wrap:anywhere}.opening-trainer_nextLesson____Nmn strong{font-size:.875rem}.opening-trainer_nextLesson____Nmn button span{font-size:.8125rem;text-decoration:underline;text-underline-offset:3px}.opening-trainer_lineDetails__iYRZp{border-top:1px solid var(--border)}.opening-trainer_lineDetails__iYRZp summary{padding:12px 0;cursor:pointer;font-size:.875rem;font-weight:600}.opening-trainer_moveList__wk_KS{display:grid;gap:2px;padding:0;margin:0;list-style:none;max-height:280px;overflow-y:auto;font-size:.875rem;font-variant-numeric:tabular-nums}.opening-trainer_moveList__wk_KS li{display:grid;grid-template-columns:2.25rem 1fr 1fr;gap:6px}.opening-trainer_moveList__wk_KS li>span{padding:6px}.opening-trainer_emptyMoves__f0xbA,.opening-trainer_moveNumber__4QM9E{color:var(--muted)}.opening-trainer_currentMove__SdgBc{background:var(--accent-soft);color:var(--text);font-weight:700;border-left:2px solid var(--accent)}.opening-trainer_playedMove__FBiG6{font-weight:700}.opening-trainer_library__9hans{margin:0 0 24px;border-top:1px solid var(--border);border-bottom:1px solid var(--border);scroll-margin-top:24px}.opening-trainer_library__9hans>summary{padding:12px 0;cursor:pointer;font-weight:700}.opening-trainer_libraryCount__fseAm{display:inline-block;margin-left:12px;color:var(--muted);font-size:.8125rem;font-weight:400}.opening-trainer_libraryBody__RcMvs{padding-bottom:20px}.opening-trainer_libraryIntro__KFS0P{display:flex;align-items:center;flex-wrap:wrap;gap:12px 24px;margin-bottom:20px}.opening-trainer_libraryIntro__KFS0P p{flex:1 1 260px;margin:0;max-width:65ch;color:var(--muted);font-size:.875rem;line-height:1.6}.opening-trainer_libraryIntro__KFS0P button{white-space:normal;text-align:left;font-size:.8125rem}.opening-trainer_searchLabel__8G_Iy{display:block;margin-bottom:6px}.opening-trainer_search__scMxM{max-width:480px}.opening-trainer_resultCount__FbKKA{margin:12px 0;color:var(--muted);font-size:.8125rem}.opening-trainer_catalog__YhHRG{padding:0;margin:0;list-style:none}.opening-trainer_catalog__YhHRG li{border-top:1px solid var(--border)}.opening-trainer_catalog__YhHRG button{display:grid;gap:6px;width:100%;min-width:0;padding:16px 12px;border:0;border-left:3px solid transparent;background:transparent;color:var(--text);text-align:left;cursor:pointer}.opening-trainer_catalog__YhHRG button:active,.opening-trainer_catalog__YhHRG button:hover{background:var(--surface-2)}.opening-trainer_catalog__YhHRG button[aria-pressed=true]{border-left-color:var(--accent);background:var(--accent-soft)}.opening-trainer_catalogTitle__8Ab6a{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;font-size:.9375rem;line-height:1.5;overflow-wrap:anywhere}.opening-trainer_selectedTag__9TUUA,.opening-trainer_startTag__cobrU{font-size:.75rem;font-weight:700}.opening-trainer_startTag__cobrU{color:var(--accent)}.opening-trainer_catalogMeta__Dq5XR{display:flex;flex-wrap:wrap;gap:4px 16px;color:var(--muted);font-size:.75rem}.opening-trainer_linePreview__78zap{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--muted);font-size:.8125rem;line-height:1.7;overflow-wrap:anywhere}.opening-trainer_noResults__fO4h_{padding:24px 0;color:var(--muted)}.opening-trainer_pagination__ZKW06{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:20px;font-size:.8125rem;font-variant-numeric:tabular-nums}.opening-trainer_pagination__ZKW06 button{padding:9px 12px}@container (min-width: 740px){.opening-trainer_workspace__UVcvl{grid-template-columns:minmax(0,1fr) minmax(260px,.52fr);grid-template-rows:auto 1fr;grid-template-areas:"board heading" "board lesson";gap:24px 32px}.opening-trainer_boardColumn__L760k{max-width:min(660px,max(360px,calc(100svh - 466px)))}}@container (max-width: 420px){.opening-trainer_toolbar__Mu3tj{gap:12px;padding-bottom:12px}.opening-trainer_openingPicker__nu_jd{flex-basis:100%;max-width:none}.opening-trainer_workspace__UVcvl{gap:16px}.opening-trainer_lessonHeading__K2H8S p{font-size:.8125rem}.opening-trainer_boardControls__p5BLV button{flex:1 1 auto;padding-inline:10px}.opening-trainer_modeOptions__H0bOq button{padding:10px}.opening-trainer_libraryCount__fseAm{margin-left:6px}}