.problem-catalog-page{width:min(1180px,calc(100% - 56px));margin:0 auto;padding:40px 0 96px;color:var(--problem-ink)}.problem-catalog-header{margin-bottom:34px}.problem-breadcrumbs{display:flex;gap:9px;align-items:center;margin-bottom:28px;color:var(--problem-muted);font-size:12px}.problem-breadcrumbs a{color:var(--problem-cyan-dark)}.problem-catalog-header h1{margin:0;font-size:clamp(30px,4vw,48px);letter-spacing:.02em;line-height:1.25}.problem-catalog-header>p:not(.problem-catalog-summary){max-width:680px;margin:14px 0 0;color:var(--problem-muted);line-height:1.8}.problem-catalog-summary{margin:18px 0 0;color:var(--problem-muted);font-size:13px}.problem-catalog-summary strong{margin:0 4px;color:var(--problem-ink);font-size:22px}.problem-classification-filters,.problem-search-controls{margin-bottom:34px;padding:24px;border:1px solid var(--problem-line);background:var(--problem-paper)}.problem-inline-search label{display:block;margin-bottom:8px;font-size:13px;font-weight:700}.problem-inline-search>div{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px}.problem-inline-search input{min-height:48px;padding:0 15px;border:1px solid #bfcad5;border-radius:2px;font:inherit}.problem-primary-button,.problem-secondary-button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;padding:0 20px;border-radius:999px;font-size:13px;font-weight:700;text-decoration:none;cursor:pointer}.problem-primary-button{border:1px solid var(--problem-navy);background:var(--problem-navy);color:#fff}.problem-primary-button:hover{background:var(--problem-navy-dark)}.problem-secondary-button{border:1px solid var(--problem-line);background:#fff;color:var(--problem-ink)}.problem-secondary-button:hover{border-color:var(--problem-cyan);color:var(--problem-cyan-dark)}.problem-catalog-page a:focus-visible,.problem-catalog-page 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10px;font-size:13px}.problem-filter-group>div{display:flex;flex-wrap:wrap;gap:8px}.problem-filter-group a{display:inline-flex;min-height:34px;align-items:center;gap:.25em;padding:4px 13px;border:1px solid var(--problem-line);border-radius:999px;color:#4b5969;font-size:12px;text-decoration:none}.problem-filter-group a.is-selected{border-color:var(--problem-navy);background:var(--problem-navy);color:#fff}.problem-catalog-results .problem-article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.problem-exam-group+.problem-exam-group{margin-top:50px}.problem-exam-group>h2{margin:0 0 18px;padding-left:14px;border-left:4px solid var(--problem-cyan);font-size:22px}.problem-pagination{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;margin:46px 0}.problem-pagination a{width:max-content;min-height:44px;padding:11px 17px;border:1px solid var(--problem-line);border-radius:999px;color:var(--problem-ink);font-size:12px;text-decoration:none}.problem-pagination a:last-child{justify-self:end}.problem-pagination span{grid-column:2;color:var(--problem-muted);font-size:12px}.problem-catalog-empty{padding:56px 28px;border:1px solid var(--problem-line);background:#fff;text-align:center}.problem-catalog-empty h2{margin:0;font-size:21px}.problem-catalog-empty p{margin:14px auto 26px;color:var(--problem-muted);line-height:1.8}.problem-catalog-empty nav,.problem-catalog-empty>div{display:flex;justify-content:center;gap:12px}.problem-catalog-empty nav{margin-top:28px}.problem-catalog-footer{display:grid;justify-items:center;gap:24px;margin-top:58px}.problem-catalog-footer>section{width:100%}.problem-mobile-active-filters,.problem-mobile-filter{display:none}.problem-filter-dialog{width:100%;max-width:none;max-height:88dvh;margin:auto 0 0;padding:0;border:0;border-radius:20px 20px 0 0}.problem-filter-dialog::backdrop{background:rgba(15,31,54,.58)}.problem-filter-sheet{max-height:88dvh;overflow:auto;padding:12px 20px 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56px));margin:0 auto;padding:40px 0 96px;color:var(--problem-ink)}.problem-directory-intro h1{margin:0;font-size:clamp(30px,4vw,48px)}.problem-directory-intro>p{margin:14px 0 40px;color:var(--problem-muted)}.problem-directory-search{max-width:560px;margin-bottom:48px}.problem-directory-search label{display:block;margin-bottom:8px;font-size:13px;font-weight:700}.problem-directory-search div{display:grid;grid-template-columns:1fr auto;gap:10px}.problem-directory-search input{min-height:48px;padding:0 15px;border:1px solid #bfcad5;font:inherit}.problem-directory-section+.problem-directory-section{margin-top:52px}.problem-directory-section h2{margin:0 0 18px;font-size:24px}.problem-field-list,.problem-university-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0;padding:0;list-style:none}.problem-university-list a{display:flex;min-height:68px;align-items:center;justify-content:space-between;padding:14px 18px;border:1px solid var(--problem-line);background:#fff;color:var(--problem-ink);text-decoration:none}.problem-university-list small{color:var(--problem-muted)}.problem-field-list{grid-template-columns:repeat(3,minmax(0,1fr))}.problem-field-list a{display:grid;min-height:90px;grid-template-columns:42px 1fr auto;gap:13px;align-items:center;padding:14px;border:1px solid var(--problem-line);background:#fff;color:var(--problem-ink);text-decoration:none}.problem-field-symbol{display:grid;width:42px;height:42px;place-items:center;background:var(--problem-cyan-soft);color:var(--problem-cyan-dark);font-family:Georgia,serif}.problem-field-list small{color:var(--problem-muted)}@media (max-width:639px){.problem-catalog-page,.problem-directory-page{width:calc(100% - 32px);padding-top:24px}.problem-catalog-header{margin-bottom:24px}.problem-breadcrumbs{margin-bottom:20px}.problem-classification-filters,.problem-search-controls{padding:16px}.problem-inline-search>div{grid-template-columns:1fr}.problem-inline-search input{font-size:16px}.problem-inline-search button{width:100%}.problem-desktop-filter-groups{display:none}.problem-mobile-filter{display:block}.problem-mobile-active-filters{display:flex}.problem-catalog-results .problem-article-grid{grid-template-columns:1fr}.problem-exam-group>h2{font-size:18px}.problem-catalog-empty{padding:38px 18px}.problem-catalog-empty>div{align-items:stretch;flex-direction:column}.problem-directory-search div,.problem-field-list,.problem-university-list{grid-template-columns:1fr}}.problem-catalog-empty h2,.problem-catalog-header h1,.problem-directory-intro h1,.problem-directory-section h2,.problem-exam-group>h2{font-family:var(--problem-serif);font-weight:500;text-wrap:balance}.problem-catalog-header h1,.problem-directory-intro h1{font-size:clamp(28px,3.5vw,40px)}.problem-directory-section h2{font-size:clamp(22px,2.5vw,30px)}@media (max-width:639px){.problem-catalog-header h1,.problem-directory-intro h1{font-size:clamp(25px,8vw,29px)}}.problem-breadcrumbs{flex-wrap:wrap}.problem-filter-more summary{min-height:34px;padding:6px 13px;border:1px solid var(--problem-line);border-radius:999px;font-size:12px;cursor:pointer}.problem-filter-more>div{display:flex;flex-wrap:wrap;gap:8px;padding:12px 0 0}