.bk-shell{--gold:#a4874e;--sage:#7d8c76;padding:25px 0 90px}.bk-shell svg{width:20px;height:20px;flex-shrink:0;vertical-align:middle}.bk-shell button,.bk-shell a,.bk-shell input,.bk-shell textarea{touch-action:manipulation}.bk-shell h1{font-size:clamp(38px,5.5vw,76px);font-weight:600;line-height:1.08;letter-spacing:-.05em}.bk-shell h2{font-size:28px;font-weight:600}.bk-shell h3{font-size:23px;font-weight:550}.bk-shell em{color:var(--gold)}.bk-top{display:flex;gap:26px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding:0 0 20px;font-size:14px;color:var(--muted)}.bk-top a:first-child{color:var(--ink);font-weight:600;margin-right:auto}.bk-top a:hover,.bk-text:hover{color:var(--gold)}.bk-hero{display:grid;grid-template-columns:1.4fr 1fr;align-items:center;gap:40px;padding:60px 0 48px}.bk-hero .eyebrow{margin-bottom:22px;font-size:12px}.bk-lead{font-size:20px;max-width:600px;color:var(--muted);margin:24px 0}.bk-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 20px;min-height:48px;background:var(--card);border:1px solid var(--line);border-radius:14px;font-size:15px;line-height:1.3;font-weight:500;text-align:center}.bk-btn:hover{border-color:var(--gold)}.bk-btn:disabled{opacity:.5;cursor:not-allowed}.bk-primary{background:var(--button);color:var(--on-button);border-color:var(--button)}.bk-art{height:300px;position:relative;isolation:isolate}.bk-art-mark{position:absolute;left:0;top:0;font:italic 190px/1 Georgia,serif;color:var(--gold);transform:rotate(-12deg)}.bk-art-orbit{position:absolute;inset:35px -8px 10px;border:1px solid var(--line);border-radius:50%;transform:rotate(-22deg);z-index:-1}.bk-art-paper{position:absolute;right:14px;bottom:12px;width:240px;padding:28px;background:var(--card);border:1px solid var(--line);box-shadow:0 22px 50px #1b1b1b09;border-radius:20px;transform:rotate(7deg);display:grid;gap:18px}.bk-art-paper>span{font-size:10px;letter-spacing:.13em;color:var(--muted)}.bk-art-paper i{font-style:normal;border-bottom:1px solid var(--line);padding-bottom:8px;font-size:17px}.bk-art-paper strong{display:flex;gap:10px;align-items:center;color:var(--sage);font-size:14px}.bk-tabs{display:flex;gap:32px;border-bottom:1px solid var(--line);margin:10px 0 28px}.bk-tabs a{padding:12px 0 16px;border-bottom:3px solid transparent;font-weight:600}.bk-tabs [aria-current]{border-color:var(--gold)}.bk-subject-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:30px 0 60px}.bk-subject-grid article{padding:24px;background:var(--card);border:1px solid var(--line);border-radius:24px;overflow:hidden}.bk-subject-grid article>span{font:68px/1.1 Georgia,serif;color:var(--gold);display:block;margin-bottom:24px}.bk-subject-grid h2{font-size:21px;letter-spacing:-.035em;min-height:48px}.bk-subject-grid article>div{display:flex;gap:20px;margin-top:22px}.bk-subject-grid a{font-size:15px;flex:1}.bk-subject-grid a svg{width:16px}.bk-subject-grid small{display:block;font-size:11px;color:var(--muted);margin-top:6px}.bk-chips{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0}.bk-chips a,.bk-chips button{border:1px solid var(--line);padding:10px 16px;min-height:44px;border-radius:24px;background:transparent;font-size:14px}.bk-chips [aria-current],.bk-chips [aria-pressed=true]{background:var(--button);color:var(--on-button);border-color:var(--button)}.bk-map{border-bottom:1px solid var(--line);padding:18px 0}.bk-map summary,.bk-spec summary{font-weight:600;min-height:44px;cursor:pointer}.bk-map summary span{font-weight:400;color:var(--muted);margin-left:14px;font-size:14px}.bk-number-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:20px 0}.bk-number-grid a{display:grid;grid-template-columns:32px 1fr;gap:6px 8px;border:1px solid var(--line);border-radius:16px;padding:14px;background:var(--card)}.bk-number-grid a:hover,.bk-number-grid a[aria-current]{border-color:var(--gold);background:var(--raised)}.bk-number-grid strong{grid-row:span 2;font-size:24px;color:var(--gold)}.bk-number-grid span{font-size:13px;line-height:1.45}.bk-number-grid small{font-size:11px;color:var(--muted)}.bk-topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:16px 0;max-height:440px;overflow:auto}.bk-topic-grid a{padding:12px;border:1px solid var(--line);border-radius:12px;font-size:13px}.bk-list-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:42px 0 24px}.bk-list-heading small{font-size:18px;color:var(--muted);font-weight:400}.bk-list-heading>a{font-size:13px}.bk-search{display:flex;gap:8px;background:var(--card);border:1px solid var(--line);padding:7px;border-radius:18px}.bk-search input{min-width:0;flex:1;border:0;background:transparent;font-size:16px}.bk-question-list{display:grid;gap:20px;margin-top:26px}.bk-question{border:1px solid var(--line);border-radius:24px;background:var(--card);padding:28px;min-width:0;break-inside:avoid}.bk-question>header{display:flex;align-items:center;gap:14px;font-size:12px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap}.bk-question>header>a{margin-right:auto}.bk-icon{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:transparent}.bk-icon[aria-pressed=true]{background:var(--raised);color:var(--gold);border-color:var(--gold)}.bk-icon[aria-pressed=true] svg{fill:currentColor}.bk-question h1{font-size:36px}.bk-condition{font-size:17px;line-height:1.85;margin:20px 0 24px;overflow-wrap:anywhere}.bk-condition img,.bk-solution img{max-width:100%;height:auto;display:block;border-radius:12px;margin:16px 0}.bk-answer label{display:block;font-size:13px;font-weight:500;margin-bottom:8px}.bk-answer>div{display:flex;gap:10px;max-width:540px}.bk-answer input{flex:1;min-width:0;border-radius:12px;background:var(--bg)}.bk-answer textarea{width:100%;padding:15px;border-radius:12px;border:1px solid var(--line);background:var(--bg);resize:vertical;max-width:100%;margin-bottom:12px}.bk-result{margin:12px 0;font-size:14px}.bk-result[data-ok=true]{color:var(--sage)}.bk-result[data-ok=false]{color:#bd633f}.bk-hint,.bk-solution{padding:15px 0;border-top:1px solid var(--line);font-size:15px}.bk-hint summary,.bk-solution summary{min-height:32px;font-weight:500}.bk-hint p,.bk-solution>div,.bk-solution p{margin-top:14px;line-height:1.8;overflow-wrap:anywhere}.bk-solution h4{margin-bottom:0}.bk-correct{font-weight:600;color:var(--sage)}.bk-question>footer{width:100%;display:flex;align-items:center;gap:16px;justify-content:space-between;border-top:1px solid var(--line);margin-top:10px;padding-top:18px;font-size:11px;color:var(--muted);flex-wrap:wrap}.bk-text{border:0;background:transparent;min-height:44px;font-size:14px;padding:6px 0}.bk-muted{color:var(--muted);font-size:13px}.bk-self{display:flex;gap:7px;align-items:center;flex-wrap:wrap}.bk-self .bk-btn{padding:8px;min-width:44px}.bk-spec{padding:28px 0;border-top:1px solid var(--line);margin-top:36px;font-size:14px;color:var(--muted);line-height:1.8}.bk-spec h2{font-size:23px;color:var(--ink);margin:14px 0}.bk-spec p{margin:12px 0}.bk-spec a{text-decoration:underline;text-underline-offset:4px}.bk-pagination,.bk-task-tools{display:flex;gap:12px;align-items:center;justify-content:center;margin:24px 0;flex-wrap:wrap}.bk-empty{padding:45px 20px;border:1px dashed var(--line);border-radius:20px;text-align:center}.bk-empty p{margin:14px auto 20px;max-width:520px;color:var(--muted)}.bk-page-head{padding:44px 0 30px}.bk-page-head h1{margin:14px 0;font-size:48px}.bk-page-head>p:last-child{color:var(--muted)}.bk-tray{position:sticky;bottom:14px;z-index:9;display:flex;align-items:center;justify-content:space-between;padding:12px 18px;border:1px solid var(--line);border-radius:18px;background:var(--card);box-shadow:var(--shadow);gap:15px;margin-top:20px}.bk-config{padding:28px;border:1px solid var(--line);border-radius:24px;background:var(--card)}.bk-config h2{font-size:20px;margin-top:20px}.bk-config h2:first-child{margin-top:0}.bk-config label{display:block;margin:14px 0 8px}.bk-config input[type=number]{width:100px}.bk-session-head{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px}.bk-session-head progress{width:100%;height:8px;accent-color:var(--gold)}.bk-session-nav{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.bk-session-nav button{min-width:44px}.bk-session-nav [aria-current]{background:var(--button);color:var(--on-button)}.bk-stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:25px 0}.bk-stat-grid>div{padding:24px;border:1px solid var(--line);border-radius:20px;background:var(--card)}.bk-stat-grid strong{display:block;font-size:36px;color:var(--gold);line-height:1.3}.bk-stat-grid span{font-size:14px;color:var(--muted)}.bk-review{padding:20px 0;border-bottom:1px solid var(--line);display:flex;gap:16px;justify-content:space-between;flex-wrap:wrap}.bk-review small{display:block;color:var(--muted)}#bk-toast:not(:empty){position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:13px 22px;max-width:calc(100% - 32px);border-radius:14px;background:var(--button);color:var(--on-button);z-index:30;font-size:14px}.bk-shell .sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.bk-shell [aria-pressed=true]{border-color:var(--gold)}
@media(max-width:900px){.bk-subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bk-number-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.bk-hero{gap:20px}.bk-art-paper{width:210px}.bk-art-mark{font-size:160px}}
@media(max-width:600px){.bk-shell{padding-top:18px}.bk-top{gap:12px 20px;font-size:12px}.bk-top a:first-child{flex-basis:100%}.bk-hero{grid-template-columns:1fr;padding:34px 0 20px;gap:15px}.bk-hero h1{font-size:42px}.bk-lead{font-size:17px;margin:20px 0}.bk-art{height:190px;max-width:360px;width:100%;margin:auto}.bk-art-mark{left:20px;font-size:150px;top:10px}.bk-art-paper{padding:18px;width:195px;gap:10px;bottom:6px;right:20px}.bk-art-paper i{font-size:14px}.bk-art-orbit{inset:25px 10px 5px}.bk-subject-grid{gap:10px;margin-bottom:34px}.bk-subject-grid article{padding:18px;border-radius:18px}.bk-subject-grid h2{font-size:17px;min-height:40px;overflow-wrap:anywhere}.bk-subject-grid article>span{font-size:48px;margin-bottom:18px}.bk-subject-grid article>div{gap:10px}.bk-subject-grid a{font-size:13px}.bk-subject-grid small{font-size:10px}.bk-tabs{gap:24px;font-size:14px}.bk-list-heading{align-items:flex-start;flex-direction:column;gap:10px}.bk-shell h2{font-size:24px}.bk-number-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.bk-number-grid a{padding:12px;grid-template-columns:25px 1fr}.bk-number-grid strong{font-size:21px}.bk-number-grid span{font-size:12px}.bk-topic-grid{grid-template-columns:1fr}.bk-chips{gap:7px}.bk-chips a,.bk-chips button{font-size:12px;padding:10px 13px}.bk-question{padding:18px;border-radius:20px}.bk-question h3{font-size:21px}.bk-question h1{font-size:30px}.bk-question>header{gap:8px}.bk-question>header>a{flex-basis:calc(100% - 55px)}.bk-question>header .bk-icon{margin-left:auto}.bk-condition{font-size:16px;line-height:1.75}.bk-answer>div{flex-direction:column}.bk-answer input{width:100%;font-size:16px}.bk-answer textarea{font-size:16px}.bk-search input{padding:10px;font-size:14px}.bk-search .bk-btn{padding:12px}.bk-btn{font-size:14px}.bk-task-tools>*{flex:1}.bk-config{padding:20px}.bk-stat-grid{gap:8px}.bk-stat-grid>div{padding:14px}.bk-stat-grid strong{font-size:28px}.bk-stat-grid span{font-size:11px}.bk-page-head h1{font-size:36px}.bk-tray{font-size:13px;padding:10px}.bk-map summary span{font-size:12px}.bk-session-head h2{font-size:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.bk-shell *{transition:none!important}}
@media print{.site-header,.beta-nav,.bk-top,.bk-hero,.bk-tabs,.bk-map,.bk-chips,.bk-search,.bk-tray,#bk-toast,.bk-answer,.bk-icon,.bk-task-tools,.bk-question>footer,.bk-hint,.bk-solution,.site-footer,body>footer{display:none!important}main{width:100%!important}.bk-shell{padding:0}.bk-question{border:0;border-bottom:1px solid #ccc;box-shadow:none;color:#000;background:white;padding:20px 0}.bk-condition{font-size:12pt}body{background:white;color:black}.bk-print-note{display:block}}

.bk-taxonomy{padding:28px 0;border-bottom:1px solid var(--line)}.bk-taxonomy-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.bk-taxonomy-head h2{font-size:22px;margin:0}.bk-taxonomy-head>span{font-size:13px;color:var(--muted);white-space:nowrap}.bk-sections{display:grid;gap:10px}.bk-section{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden}.bk-section>summary{display:flex;align-items:center;gap:18px;list-style:none;padding:20px 22px;cursor:pointer;min-height:76px}.bk-section>summary::-webkit-details-marker{display:none}.bk-section-name{flex:1;min-width:0}.bk-section-name small{display:block;color:var(--gold);font-size:11px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:5px}.bk-section-name strong{font-size:17px;font-weight:550}.bk-section-count{font-size:13px;color:var(--muted);white-space:nowrap}.bk-section>summary>svg{width:18px;height:18px;transition:transform .18s}.bk-section[open]>summary>svg{transform:rotate(180deg)}.bk-section[open]{border-color:var(--gold)}.bk-section-body{padding:0 22px 20px;border-top:1px solid var(--line)}.bk-section-all{display:inline-flex;align-items:center;gap:8px;min-height:44px;margin:10px 0;color:var(--ink);font-size:14px}.bk-section-body h3{font-size:13px;color:var(--muted);margin:8px 0;font-weight:500}.bk-section .bk-topic-grid{max-height:none;overflow:visible;margin:10px 0 0}.bk-section .bk-topic-grid a{display:flex;flex-direction:column;gap:8px;justify-content:space-between;min-height:60px;background:var(--bg)}.bk-topic-grid a small{font-size:11px;color:var(--muted)}.bk-topic-grid a:hover,.bk-topic-grid a[aria-current]{border-color:var(--gold)}.bk-topic-grid a[aria-current]{box-shadow:inset 0 0 0 1px var(--gold)}
@media(max-width:600px){.bk-section>summary{padding:16px;gap:10px;flex-wrap:wrap}.bk-section-name{flex-basis:calc(100% - 30px)}.bk-section-name strong{font-size:16px}.bk-section-count{order:3;flex-basis:100%;padding-left:0;font-size:12px}.bk-section-body{padding:0 16px 16px}.bk-taxonomy-head h2{font-size:21px}}
@media print{.bk-taxonomy{display:none!important}}
/* Bank audit: readable controls, clear location and short route to practice. */
.bk-shell{--gold-text:#826632;--sage-text:#506749}.bk-shell :is(a,button,input,textarea,summary):focus-visible{outline:2px solid var(--gold-text);outline-offset:4px}.bk-top a{display:inline-flex;align-items:center;gap:6px;min-height:44px}.bk-top [aria-current]{color:var(--ink);text-decoration:underline;text-decoration-color:var(--gold);text-underline-offset:8px}.bk-breadcrumbs{margin:22px 0;color:var(--muted);font-size:13px}.bk-breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px 14px;list-style:none;padding:0}.bk-breadcrumbs li{display:flex;align-items:center;gap:14px;min-width:0}.bk-breadcrumbs li+li:before{content:'';height:12px;border-left:1px solid var(--line);transform:rotate(20deg)}.bk-breadcrumbs a{display:inline-flex;align-items:center;min-height:44px}.bk-breadcrumbs [aria-current]{overflow-wrap:anywhere}.bk-hero-compact{padding-top:24px}.bk-hero-compact h1{font-size:clamp(30px,4vw,52px);overflow-wrap:anywhere}.bk-jump{display:inline-flex;align-items:center;min-height:48px;margin:10px 20px;text-decoration:underline;text-underline-offset:5px;font-size:14px}.bk-catalog{scroll-margin-top:150px}.bk-hint summary,.bk-solution summary{min-height:44px;display:list-item;align-content:center;cursor:pointer}.bk-art-paper strong,.bk-result[data-ok=true],.bk-correct{color:var(--sage-text)}.bk-section-name small{color:var(--gold-text)}.bk-result[data-ok=false]{color:#9d4729}.bk-search input{font-size:16px}.bk-review>.bk-task-tools{margin:0}.bk-shell .bk-btn[aria-pressed=true]{box-shadow:inset 0 0 0 1px var(--gold);background:var(--raised);color:var(--ink)}
[data-theme=dark] .bk-shell{--gold-text:#c5ab77;--sage-text:#abc49f}[data-theme=dark] .bk-result[data-ok=false]{color:#efb299}
@media(min-width:1100px){.bk-subject-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.bk-subject-grid article{padding:20px}.bk-subject-grid h2{font-size:20px}}
@media(max-width:600px){.bk-top{gap:4px 16px;padding-bottom:12px}.bk-top a:first-child{flex-basis:auto;margin-right:0}.bk-breadcrumbs{font-size:12px;margin:14px 0}.bk-hero-compact{display:block;padding:18px 0}.bk-hero-compact .bk-art{display:none}.bk-hero-compact h1{font-size:32px}.bk-jump{margin-left:0;display:flex}.bk-search input{font-size:16px}.bk-tray{flex-wrap:wrap}.bk-tray .bk-btn{flex:1}.bk-page-head{padding:25px 0}.bk-stat-grid{grid-template-columns:1fr}.bk-stat-grid>div{display:flex;gap:16px;align-items:center}.bk-stat-grid span{font-size:14px}}
@media print{.bk-breadcrumbs,.bk-jump{display:none!important}}
@media(max-width:600px){.bk-top{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.bk-top a{font-size:13px}.bk-top a:first-child{margin:0}.bk-top a[aria-current]{text-decoration-thickness:2px}.bk-breadcrumbs ol{margin:0}.bk-hero-compact .eyebrow{margin-bottom:14px}}
.bk-subject-grid h2{word-break:normal;overflow-wrap:normal;hyphens:manual;line-height:1.15;font-size:clamp(20px,1.6vw,26px)}.media-credits{font-size:12px;line-height:1.6;color:var(--muted);margin:12px 0 18px}.media-credits summary{cursor:pointer;width:fit-content;padding:8px 0}.media-credits p{margin:6px 0;overflow-wrap:anywhere}.media-credits a{color:inherit;text-decoration:underline;text-underline-offset:3px}
.bk-table-wrap{max-width:100%;overflow-x:auto;margin:16px 0;overscroll-behavior-inline:contain}.bk-table{width:100%;border-collapse:collapse;font-size:inherit;line-height:1.45}.bk-table th,.bk-table td{border:1px solid var(--line,#c9c9c9);padding:12px;text-align:left;vertical-align:top;overflow-wrap:break-word}.bk-table th{font-weight:600}.bk-table-wrap:focus-visible{outline:2px solid var(--gold,#ad8c52);outline-offset:3px}@media(max-width:600px){.bk-table{font-size:14px;min-width:440px}.bk-table th,.bk-table td{padding:9px}}@media print{.bk-table-wrap{overflow:visible}.bk-table{min-width:0;font-size:10pt}}
/* One combined, progressively enhanced filter for subject practice. */
.bk-filters{padding:26px;margin:24px 0;background:var(--card);border:1px solid var(--line);border-radius:24px}.bk-filter-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}.bk-filter-heading h2{margin:0}.bk-filter-heading>a{font-size:14px;text-decoration:underline;text-underline-offset:4px;padding:10px 0}.bk-filter-fields{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:16px}.bk-filter-fields label,.bk-topic-search{display:grid;gap:8px;font-size:14px;min-width:0}.bk-filters :is(select,input[type=search]){width:100%;min-width:0;min-height:48px;background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:12px;padding:12px;font:inherit;font-size:16px}.bk-filter-topics{margin:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.bk-filter-topics>summary{padding:18px 0;cursor:pointer;font-weight:550;min-height:48px}.bk-filter-topics>summary span{font-size:13px;color:var(--muted);font-weight:400;margin-left:12px}.bk-filter-sections{max-height:440px;overflow-y:auto;overscroll-behavior:contain;margin:16px 0;padding-right:8px}.bk-filter-sections fieldset{border:0;padding:0;margin:0 0 20px;min-width:0}.bk-filter-sections legend{font-size:15px;font-weight:600;padding:12px 0}.bk-topic-option{display:flex;align-items:flex-start;gap:12px;padding:12px 8px;min-height:48px;font-size:15px;cursor:pointer;border-radius:10px}.bk-topic-option:hover,.bk-topic-option:has(input:checked){background:var(--bg)}.bk-topic-option input{width:20px;height:20px;accent-color:var(--gold-text);flex-shrink:0;margin-top:2px}.bk-topic-option span{flex:1;min-width:0;overflow-wrap:anywhere}.bk-topic-option small{color:var(--muted);font-size:12px;padding-top:3px}.bk-filter-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}.bk-filter-actions .bk-muted{font-size:13px}.bk-filters [hidden]{display:none!important}.bk-filters select:focus-visible{outline:2px solid var(--gold-text);outline-offset:4px}.bk-texts-link{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 24px;border:1px solid var(--line);border-radius:18px;background:var(--card);margin:20px 0}.bk-texts-link small{display:block;color:var(--muted);font-size:14px;margin-top:5px}.bk-question-topic{font-size:15px;color:var(--muted);line-height:1.5;margin:8px 0 24px}.bk-question :is(h1,h3){margin-bottom:0}.bk-subject-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:700px){.bk-filters{padding:18px;border-radius:20px}.bk-filter-fields{grid-template-columns:1fr}.bk-filter-heading{align-items:flex-start;flex-wrap:wrap;gap:4px}.bk-filter-heading h2{font-size:23px}.bk-filter-topics>summary span{display:block;margin:6px 0 0 18px}.bk-filter-actions{gap:12px}.bk-filter-actions .bk-btn{width:100%}.bk-filter-sections{max-height:360px}.bk-topic-option{padding:12px 0}.bk-subject-grid{grid-template-columns:1fr}.bk-texts-link{padding:18px}.bk-texts-link small{font-size:13px}}
@media print{.bk-filters,.bk-texts-link{display:none!important}}

#bk-filter-heading{scroll-margin-top:120px}
/* Shared catalogue controls: visible choices and collapsible codifier sections. */
.bk-number-picker,.bk-format-picker{border:0;padding:0;margin:0;min-width:0}.bk-number-picker legend,.bk-format-picker legend{font-size:14px;margin-bottom:12px;padding:0}.bk-number-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-bottom:24px}.bk-number-options label,.bk-format-picker label{position:relative;cursor:pointer;min-width:0}.bk-number-options input,.bk-format-picker input{position:absolute;opacity:0;width:1px;height:1px}.bk-number-options label>span{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:14px;padding:12px;min-height:72px;height:100%;background:var(--bg)}.bk-number-options strong{font-size:22px;color:var(--gold-text);min-width:26px}.bk-number-options small{font-size:12px;line-height:1.4}.bk-number-options input:checked+span,.bk-format-picker input:checked+span{background:var(--button);color:var(--on-button);border-color:var(--button)}.bk-number-options input:checked+span strong{color:inherit}.bk-number-options input:focus-visible+span,.bk-format-picker input:focus-visible+span{outline:2px solid var(--gold-text);outline-offset:3px}.bk-number-options label:hover>span,.bk-format-picker label:hover>span{border-color:var(--gold)}.bk-number-all>span{font-size:14px;justify-content:center}.bk-filter-fields{grid-template-columns:1fr 1fr;align-items:end}.bk-format-picker>div{display:flex;gap:6px;flex-wrap:wrap}.bk-format-picker label>span{display:flex;align-items:center;justify-content:center;min-height:48px;padding:10px 14px;border:1px solid var(--line);border-radius:12px;font-size:14px}.bk-topic-heading{display:flex;justify-content:space-between;gap:12px;padding:20px 0 8px;font-weight:550}.bk-topic-heading>span{color:var(--muted);font-size:13px;font-weight:400}.bk-topic-search{margin:16px 0}.bk-filter-sections{max-height:none;overflow:visible;padding:0}.bk-topic-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding-top:16px}.bk-topic-option{border:1px solid var(--line);padding:12px!important;line-height:1.5;font-size:14px;background:var(--bg)}.bk-topic-option:has(input:checked){border-color:var(--gold);background:var(--raised)}.bk-topic-option input{padding:0!important;min-height:20px;max-height:20px;align-self:flex-start}.bk-question>header{margin-bottom:8px}.bk-question :is(h1,h3).bk-question-topic{font-size:16px;font-weight:400;letter-spacing:normal;line-height:1.5;color:var(--muted);margin:0 0 24px}.bk-topic-grid a small{display:block;margin-top:8px;color:var(--muted);font-size:12px;line-height:1.5}
@media(max-width:1000px){.bk-number-options{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:700px){.bk-number-options{grid-template-columns:repeat(2,minmax(0,1fr))}.bk-number-options label>span{gap:8px;padding:10px;min-height:76px}.bk-number-options small{font-size:11px}.bk-filter-fields{grid-template-columns:1fr}.bk-topic-choices{grid-template-columns:1fr}.bk-format-picker label{flex:1}.bk-format-picker label>span{padding:10px 8px;font-size:13px}.bk-topic-heading{flex-wrap:wrap}.bk-filter-sections{max-height:none}.bk-question :is(h1,h3).bk-question-topic{font-size:14px}}
.bk-question .bk-question-title{font-size:24px;line-height:1.3;letter-spacing:-.025em;font-weight:600;margin:20px 0}.bk-question>p.bk-question-topic{margin:0 0 18px;color:var(--muted);font-size:14px;line-height:1.5}@media(max-width:600px){.bk-question .bk-question-title{font-size:21px}}

/* Every mobile subject card follows the same text-left, symbol-right layout. */
@media(max-width:700px){.bk-subject-grid article{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto;gap:18px 14px;align-content:start;padding:20px}.bk-subject-grid article>span{grid-column:2;grid-row:1/3;align-self:start;justify-self:end;float:none;font-size:52px;line-height:1;margin:0;max-width:100px}.bk-subject-grid article h2{grid-column:1;grid-row:1;min-height:0;margin:0;font-size:22px;line-height:1.2;hyphens:manual;overflow-wrap:normal}.bk-subject-grid article>div{grid-column:1;grid-row:2;min-width:0;width:100%;max-width:230px;margin:0;gap:18px}.bk-subject-grid article a{min-width:0;min-height:44px;font-size:14px}.bk-subject-grid article small{font-size:11px}}
@media(max-width:360px){.bk-subject-grid article{padding:18px;column-gap:10px}.bk-subject-grid article>span{font-size:40px}.bk-subject-grid article h2{font-size:20px}.bk-subject-grid article>div{gap:12px}}
/* Russian bank: one clear selection path, never an accidental number/topic intersection. */
.bk-choice-modes{display:flex;gap:6px;padding:5px;background:var(--bg);border:1px solid var(--line);border-radius:14px;width:fit-content;margin:22px 0}.bk-choice-modes button{font:inherit;font-size:15px;padding:12px 20px;border:0;border-radius:10px;background:transparent;color:var(--muted);cursor:pointer;min-height:48px}.bk-choice-modes [aria-pressed=true]{background:var(--button);color:var(--on-button)}.bk-russian-filters fieldset{border:0;padding:0;margin:0;min-width:0}.bk-quick-numbers{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:8px;max-width:850px}.bk-quick-numbers label,.bk-quick-topics label{position:relative;cursor:pointer}.bk-quick-numbers input,.bk-quick-topics input{position:absolute;opacity:0;width:1px;height:1px}.bk-quick-numbers label>span{display:flex;align-items:center;justify-content:center;min-height:48px;border:1px solid var(--line);border-radius:10px;background:var(--bg);font-size:17px}.bk-quick-numbers input:checked+span,.bk-quick-topics input:checked+span{background:var(--button);color:var(--on-button);border-color:var(--button)}.bk-quick-numbers input:focus-visible+span,.bk-quick-topics input:focus-visible+span{outline:2px solid var(--gold-text);outline-offset:3px}.bk-quick-numbers label:hover>span,.bk-quick-topics label:hover>span{border-color:var(--gold-text)}.bk-number-description{margin:16px 0 22px;min-height:24px;font-size:15px;color:var(--muted)}.bk-quick-topics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.bk-quick-topics label>span{display:flex;flex-direction:column;justify-content:space-between;gap:10px;min-height:92px;height:100%;padding:16px;border:1px solid var(--line);border-radius:12px;background:var(--bg)}.bk-quick-topics strong{font-size:15px;font-weight:550}.bk-quick-topics small{font-size:12px;opacity:.75}.bk-refine{border-top:1px solid var(--line);margin:22px 0}.bk-refine>summary{padding:16px 0;cursor:pointer;font-size:14px;min-height:48px}.bk-refine .bk-filter-fields{margin:4px 0 20px}.bk-russian-filters .bk-filter-actions{border-top:1px solid var(--line);padding-top:20px;align-items:center}.bk-active-filters{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:0 0 20px;font-size:13px}.bk-active-filters>span{color:var(--muted);margin-right:4px}.bk-active-filters>a{display:inline-flex;align-items:center;gap:10px;min-height:40px;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card)}.bk-active-filters svg{flex-shrink:0}.bk-empty-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}.bk-russian-filters input[type=search],.bk-russian-filters select{font-size:16px}
@media(max-width:700px){.bk-choice-modes{width:100%}.bk-choice-modes button{flex:1;padding:10px 6px;font-size:14px}.bk-quick-numbers{grid-template-columns:repeat(7,minmax(0,1fr));gap:6px}.bk-quick-numbers label>span{font-size:15px;min-height:44px}.bk-quick-topics{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.bk-quick-topics label>span{padding:12px}.bk-quick-topics strong{font-size:14px}.bk-russian-filters .bk-filter-heading h2{font-size:22px}.bk-empty-actions .bk-btn{width:100%}.bk-active-filters>a{max-width:100%;overflow-wrap:anywhere}.bk-active-filters>span{width:100%}}
@media print{.bk-active-filters{display:none}}