.problems_bank__O15YK,.problems_workspace__bZUKG{--ink:var(--color-text);--muted:var(--color-muted);--rule:var(--color-border);--gel:var(--color-accent);--amber:var(--color-warm-text);--panel:var(--color-surface);--bg:var(--color-bg);--mono:ui-monospace,SFMono-Regular,Menlo,monospace;--body:Inter,system-ui,sans-serif;color:var(--ink);max-width:1440px;margin:0 auto;padding:28px 36px 72px;line-height:1.65}.problems_bank__O15YK{max-width:1080px;padding-top:64px}.problems_bank__O15YK h1{font-size:clamp(2rem,4vw,3.2rem);max-width:800px;line-height:1.15}.problems_eyebrow__fgBRV{font-size:11px;font-weight:700;letter-spacing:.11em;text-transform:uppercase;color:var(--muted)}.problems_header__mPS7j{display:flex;justify-content:space-between;gap:16px;font-size:13px}.problems_header__mPS7j span{color:var(--muted)}.problems_title__MZEix{padding:28px 0 22px;border-bottom:1px solid var(--rule)}.problems_title__MZEix h1{font-family:Georgia,serif;font-size:clamp(1.9rem,3vw,2.8rem);font-weight:500;line-height:1.15;margin:8px 0 16px}.problems_title__MZEix>p{max-width:840px}.problems_score__FFYTs{display:flex;justify-content:space-between;gap:16px;font-size:12px;color:var(--muted)}.problems_score__FFYTs strong{color:var(--gel)}.problems_columns__hA_tB{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);grid-gap:40px;gap:40px;padding-top:22px}.problems_reading__l6JaO,.problems_work__g7m_A{min-width:0}.problems_tabs__Qkw3w{display:flex;gap:8px;border-bottom:1px solid var(--rule);padding-bottom:10px}.problems_workspace__bZUKG button{font:inherit;font-size:13px;border:1px solid var(--rule);border-radius:6px;background:var(--panel);color:var(--ink);padding:8px 13px;cursor:pointer}.problems_workspace__bZUKG button:disabled{opacity:.55;cursor:default}.problems_workspace__bZUKG a:focus-visible,.problems_workspace__bZUKG button:focus-visible,.problems_workspace__bZUKG input:focus-visible{outline:2px solid var(--gel);outline-offset:3px}.problems_parts__s49Yy button[aria-current],.problems_tabs__Qkw3w button[aria-selected=true]{border-color:var(--gel);box-shadow:inset 0 -2px var(--gel)}.problems_prose__HXpc7{font-size:15px;line-height:1.8;overflow-wrap:anywhere;padding:12px 0}.problems_prose__HXpc7 h2{font-family:Georgia,serif;font-size:24px;line-height:1.3;margin:24px 0 12px}.problems_prose__HXpc7 h3{font-size:18px}.problems_prose__HXpc7 p{margin:10px 0 18px}.problems_prose__HXpc7 pre{overflow:auto;padding:14px;background:var(--bg);border:1px solid var(--rule);border-radius:6px;font-size:12px}.problems_prose__HXpc7 code{font-family:var(--mono)}.problems_prose__HXpc7 figure{margin:20px 0}.problems_prose__HXpc7 img,.problems_prose__HXpc7 svg{max-width:100%;height:auto}.problems_prose__HXpc7 math[display=block]{overflow:auto;max-width:100%;padding:8px 0}.problems_prose__HXpc7 blockquote{border-left:2px solid var(--gel);margin:16px 0;padding:0 18px}.problems_prose__HXpc7 table{border-collapse:collapse;width:100%;font-size:13px}.problems_prose__HXpc7 td,.problems_prose__HXpc7 th{padding:8px;border:1px solid var(--rule)}.problems_parts__s49Yy{display:flex;gap:8px;justify-content:space-between}.problems_parts__s49Yy button{flex:1 1;padding:8px 5px;display:grid;grid-gap:2px;gap:2px}.problems_parts__s49Yy small{text-transform:uppercase;letter-spacing:.05em;font-size:9px;color:var(--muted)}.problems_partHeading__v0ppj{padding-top:24px}.problems_partHeading__v0ppj h2{font-size:22px;margin:5px 0}.problems_fields__asGuP{padding:0;border:0;min-width:0;display:grid;grid-gap:12px;gap:12px;margin:12px 0}.problems_input__6j5XT{display:grid;grid-gap:4px;gap:4px;font-size:13px}.problems_input__6j5XT input{background:var(--bg);color:var(--ink);border:1px solid var(--rule);border-radius:6px;padding:10px;font:inherit}.problems_editorHeading__6QhwY{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px}.problems_note__XA4mX{font-size:12px;color:var(--muted);margin:6px 0}.problems_workspace__bZUKG .problems_submit__XXv7n{background:var(--ink);color:var(--panel);border:0;justify-self:start;font-weight:650;padding:10px 22px}.problems_verdict__Y9l4R{margin:18px 0;padding:16px;border:1px solid var(--rule);border-left:3px solid var(--amber);border-radius:6px;font-size:13px;background:var(--panel);overflow-wrap:anywhere}.problems_verdict__Y9l4R[data-ok=true]{border-left-color:var(--gel)}.problems_verdict__Y9l4R h3{margin:0}.problems_verdict__Y9l4R small{color:var(--muted)}.problems_tableScroll__reyuU{overflow:auto;margin-top:12px}.problems_tableScroll__reyuU table{border-collapse:collapse;width:100%;font:11px var(--mono);text-align:left}.problems_tableScroll__reyuU caption{text-align:left;padding:8px 0;color:var(--muted)}.problems_tableScroll__reyuU td,.problems_tableScroll__reyuU th{padding:8px;border-bottom:1px solid var(--rule);white-space:nowrap}.problems_background__5wCuX,.problems_hints__LUDPK,.problems_sandbox__BIffc{border-top:1px solid var(--rule);margin-top:28px;padding-top:16px}.problems_background__5wCuX h2,.problems_hints__LUDPK h3{font-size:14px}.problems_hints__LUDPK p,.problems_sandbox__BIffc>p{font-size:13px;color:var(--muted)}.problems_background__5wCuX a{display:block;text-transform:capitalize;font-size:14px;margin:7px 0}.problems_sandbox__BIffc summary{cursor:pointer;font-weight:650;font-size:14px}.problems_lock__9lspt{padding:24px 0}.problems_cards__PNXfz{display:grid;grid-gap:20px;gap:20px;margin:36px 0}.problems_card__kAp6L{display:block;text-decoration:none!important;border:1px solid var(--rule);background:var(--panel);padding:24px;border-radius:12px;color:var(--ink)!important}.problems_card__kAp6L h2{font-family:Georgia,serif;font-weight:500;font-size:26px}.problems_card__kAp6L>span:last-child{font-size:12px;color:var(--muted)}@media (max-width:800px){.problems_bank__O15YK,.problems_workspace__bZUKG{padding:22px 18px 48px}.problems_columns__hA_tB{grid-template-columns:minmax(0,1fr);gap:28px}.problems_header__mPS7j,.problems_score__FFYTs{flex-wrap:wrap}.problems_title__MZEix{padding-top:24px}.problems_parts__s49Yy{position:-webkit-sticky;position:sticky;top:var(--app-header-height,69px);z-index:1;background:var(--bg);padding:8px 0}.problems_prose__HXpc7{font-size:15px}.problems_title__MZEix h1{font-size:30px}}.problems_jump___1IXg{display:none}@media (max-width:800px){.problems_jump___1IXg{display:inline-block;font-size:13px;margin-top:16px}}.problems_work__g7m_A{scroll-margin-top:calc(var(--app-header-height, 69px) + 12px)}