.problems-v2{width:min(100%,80rem);min-height:72vh;color:var(--tdb-ink,var(--navy));margin-inline:auto;padding:2.5rem 1.25rem 5rem}.problem-v2-header{border-bottom:1px solid var(--tdb-rule,var(--rule));justify-content:space-between;align-items:end;gap:2rem;padding-bottom:1.5rem;display:flex}.problem-v2-header>div{max-width:48rem}.problem-v2-eyebrow{font-family:var(--font-mono);letter-spacing:.09em;text-transform:uppercase;color:var(--tdb-accent,var(--accent));font-size:.65rem;font-weight:550}.problem-v2-header h1{letter-spacing:-.035em;margin-top:.35rem;font-size:clamp(1.75rem,4vw,2.25rem);font-weight:620;line-height:1.1}.problem-v2-header p:last-child{max-width:44rem;color:var(--tdb-muted,var(--muted));margin-top:.55rem;font-size:.86rem;line-height:1.55}.problem-v2-submit-link{border:1px solid var(--tdb-accent,var(--accent));border-radius:var(--tdb-radius,3px);background:var(--tdb-accent,var(--accent));color:#fff;flex:none;padding:.58rem .8rem;font-size:.75rem;font-weight:650}.problem-v2-submit-link:hover{filter:brightness(.94)}.problem-v2-modal-open{overflow:hidden}.problem-v2-directory{margin-top:1.75rem}.problem-v2-pane[hidden]{display:none}.problem-v2-directory-head{justify-content:space-between;align-items:center;gap:1rem;display:flex}.problem-v2-directory-head h2{letter-spacing:-.012em;font-size:1rem;font-weight:650}.problem-v2-tabs{border:1px solid var(--tdb-rule,var(--rule));border-radius:var(--tdb-radius,3px);background:var(--tdb-surface,white);display:inline-flex}.problem-v2-tabs button{border-left:1px solid var(--tdb-rule,var(--rule));min-width:4rem;color:var(--tdb-muted,var(--muted));padding:.38rem .65rem;font-size:.68rem;font-weight:550}.problem-v2-tabs button:first-child{border-left:0}.problem-v2-tabs button:hover{color:var(--tdb-accent,var(--accent))}.problem-v2-tabs button[aria-selected=true]{background:var(--tdb-accent-soft,var(--accent-tint));color:var(--tdb-accent,var(--accent))}.problem-v2-filters{border:1px solid var(--tdb-rule,var(--rule));background:var(--tdb-surface,white);grid-template-columns:minmax(14rem,1fr) minmax(10rem,14rem);align-items:end;gap:.5rem;margin-top:.8rem;padding:.65rem;display:grid}.problem-v2-filters label{gap:.25rem;min-width:0;display:grid}.problem-v2-filters label>span,.problem-v2-form label{color:var(--tdb-muted,var(--muted));font-size:.62rem;font-weight:600}.problem-v2-filters input,.problem-v2-filters select,.problem-v2-form input,.problem-v2-form select,.problem-v2-form textarea{border:1px solid var(--tdb-rule,var(--rule));border-radius:var(--tdb-radius,3px);background:var(--tdb-canvas,var(--bg));width:100%;color:var(--tdb-ink,var(--navy))}.problem-v2-filters input,.problem-v2-filters select{min-height:2.15rem;padding:.38rem .5rem;font-size:.7rem}.problem-v2-filters input:focus-visible,.problem-v2-filters select:focus-visible,.problem-v2-form input:focus-visible,.problem-v2-form select:focus-visible,.problem-v2-form textarea:focus-visible,.problem-v2-signal:focus-visible,.problem-v2-tabs button:focus-visible,.problem-v2-submit-link:focus-visible{outline:2px solid var(--tdb-accent,var(--accent));outline-offset:2px}.problem-v2-filters>button,.problem-v2-form>button{border:1px solid var(--tdb-accent,var(--accent));border-radius:var(--tdb-radius,3px);background:var(--tdb-accent,var(--accent));color:#fff;font-size:.7rem;font-weight:650}.problem-v2-filters>button{min-height:2.15rem;padding:.38rem .75rem}.problem-v2-summary{min-height:2.2rem;font-family:var(--font-mono);color:var(--tdb-muted,var(--muted));justify-content:space-between;align-items:center;gap:1rem;padding:.35rem .1rem;font-size:.59rem;display:flex}.problem-v2-summary p:first-child{color:var(--tdb-ink,var(--navy))}.problem-v2-table-wrap{border:1px solid var(--tdb-rule,var(--rule));background:var(--tdb-surface,white);overflow-x:auto}.problem-v2-table{border-collapse:collapse;table-layout:fixed;width:100%;min-width:67rem}.problem-v2-table th{border-bottom:1px solid var(--tdb-rule,var(--rule));background:var(--tdb-canvas,var(--bg));font-family:var(--font-mono);letter-spacing:.035em;text-align:left;text-transform:uppercase;color:var(--tdb-muted,var(--muted));padding:.45rem .5rem;font-size:.55rem;font-weight:560}.problem-v2-table th:first-child{width:39%}.problem-v2-table th:nth-child(2){width:8%}.problem-v2-table th:nth-child(3){width:10%}.problem-v2-table th:nth-child(4),.problem-v2-table th:nth-child(5),.problem-v2-table th:nth-child(6),.problem-v2-table th:nth-child(7){text-align:right;width:6.5%}.problem-v2-table th:last-child{width:17%}.problem-v2-row td{border-top:1px solid var(--tdb-rule,var(--rule));vertical-align:top;color:var(--tdb-ink,var(--navy));padding:.6rem .5rem;font-size:.68rem}.problem-v2-row:first-child td{border-top:0}.problem-v2-row:hover td{background:color-mix(in srgb, var(--tdb-accent-soft,var(--accent-tint)) 30%, transparent)}.problem-v2-primary{padding-left:.65rem!important}.problem-v2-title-line{align-items:baseline;gap:.5rem;display:flex}.problem-v2-title{text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom;min-width:0;max-width:100%;font-size:.76rem;font-weight:650;line-height:1.3;display:inline-block;overflow:hidden}.problem-v2-quiet-tags{white-space:nowrap}.problem-v2-ref{font-family:var(--tdb-font-mono,ui-monospace, monospace);color:var(--tdb-muted,#64748b);margin-right:.15rem;font-size:.72rem;font-weight:550}.problem-v2-title:hover{color:var(--tdb-accent,var(--accent));text-underline-offset:.18em;text-decoration:underline}.problem-v2-id{font-family:var(--font-mono);color:var(--tdb-muted,var(--muted));flex:none;font-size:.52rem}.problem-v2-statement{-webkit-line-clamp:2;color:color-mix(in srgb, var(--tdb-ink,var(--navy)) 75%, transparent);-webkit-box-orient:vertical;margin-top:.28rem;font-family:STIX Two Math,Cambria Math,Georgia,serif;font-size:.71rem;line-height:1.38;display:-webkit-box;overflow:hidden}.problem-v2-detail{flex-wrap:wrap;align-items:center;gap:.25rem;margin-top:.38rem;display:flex}.problem-v2-tag{border:1px solid var(--tdb-rule,var(--rule));color:var(--tdb-muted,var(--muted));border-radius:999px;padding:.08rem .3rem;font-size:.5rem}.problem-v2-author{font-family:var(--font-mono);color:var(--tdb-muted,var(--muted));margin-left:auto;font-size:.5rem}.problem-v2-state{background:var(--tdb-accent-soft,var(--accent-tint));font-family:var(--tdb-font-interface,var(--font-sans));letter-spacing:-.01em;white-space:nowrap;color:var(--tdb-accent,var(--accent));border:1px solid #0000;border-radius:999px;align-items:center;gap:.3rem;padding:.16rem .5rem;font-size:.7rem;font-weight:620;line-height:1.3;display:inline-flex}.problem-v2-state:before{content:"";background:currentColor;border-radius:999px;width:.4rem;height:.4rem}.problem-v2-state[data-state*=open]{border-color:color-mix(in srgb, var(--tdb-accent,var(--accent)) 22%, transparent)}.problem-v2-state[data-state*=proven],.problem-v2-state[data-state*=solved],.problem-v2-state[data-state*=resolved],.problem-v2-state[data-state*=closed],.problem-v2-state[data-state*=verified],.problem-v2-state[data-state*=formalized]{border-color:color-mix(in srgb, var(--tdb-positive,var(--ok)) 25%, transparent);background:color-mix(in srgb, var(--tdb-positive,var(--ok)) 11%, white);color:var(--tdb-positive,var(--ok))}.problem-v2-table th:last-child,.problem-v2-table td.problem-v2-updated{text-align:right}.problem-v2-state[data-state*=accepted],.problem-v2-state[data-state*=proved_informally]{border-color:color-mix(in srgb, var(--tdb-muted,#68727d) 26%, transparent);color:var(--tdb-muted,#68727d);background:0 0}.problem-v2-state[data-state*=rejected],.problem-v2-state[data-state*=refuted],.problem-v2-state[data-state*=disproved],.problem-v2-state[data-state*=false]{border-color:color-mix(in srgb, var(--tdb-negative,#a33a3a) 25%, transparent);background:color-mix(in srgb, var(--tdb-negative,#a33a3a) 10%, white);color:var(--tdb-negative,#a33a3a)}.problem-v2-state[data-state*=review],.problem-v2-state[data-state*=unreviewed],.problem-v2-state[data-state*=prospect],.problem-v2-state[data-state*=pending],.problem-v2-state[data-state*=partial]{border-color:color-mix(in srgb, var(--tdb-warning,#835b22) 25%, transparent);background:color-mix(in srgb, var(--tdb-warning,#835b22) 10%, white);color:var(--tdb-warning,#835b22)}.problem-v2-state[data-state*=archiv],.problem-v2-state[data-state*=merged],.problem-v2-state[data-state*=withdrawn]{border-color:var(--tdb-rule,#deded7);background:var(--tdb-surface,#f8f8f5);color:var(--tdb-muted,var(--muted))}.problem-v2-field{overflow-wrap:anywhere;color:var(--tdb-muted,var(--muted))!important}.problem-v2-number{font-family:var(--font-mono);text-align:right;font-variant-numeric:tabular-nums;font-size:.63rem!important}.problem-v2-activity{color:var(--tdb-muted,var(--muted))!important}.problem-v2-activity-inner{flex-wrap:wrap;align-items:center;gap:.25rem;display:flex}.problem-v2-signal{border:1px solid var(--tdb-rule,var(--rule));border-radius:var(--tdb-radius,3px);background:var(--tdb-canvas,var(--bg));color:var(--tdb-muted,var(--muted));align-items:center;gap:.25rem;padding:.22rem .32rem;font-size:.52rem;display:inline-flex}.problem-v2-signal:hover{border-color:var(--tdb-accent,var(--accent));color:var(--tdb-accent,var(--accent))}.problem-v2-signal:disabled{cursor:wait;opacity:.5}.problem-v2-signal strong{font-family:var(--font-mono);color:var(--tdb-ink,var(--navy));font-weight:600}.problem-v2-investigators{width:100%;font-family:var(--font-mono);color:var(--tdb-muted,var(--muted));margin-top:.08rem;font-size:.5rem}.problem-v2-message td{text-align:center;color:var(--tdb-muted,var(--muted));padding:1.5rem .75rem;font-size:.72rem}.problem-v2-loading td{animation:1s ease-in-out infinite alternate problem-v2-pulse}@keyframes problem-v2-pulse{0%{opacity:.45}to{opacity:1}}.problem-v2-proposal{border:1px solid var(--tdb-rule,var(--rule));border-radius:var(--tdb-radius,3px);background:var(--tdb-surface,white);width:min(100% - 2rem,54rem);max-height:min(90vh,58rem);color:var(--tdb-ink,var(--navy));margin:auto;padding:0;box-shadow:0 1.5rem 4rem #0d213738}.problem-v2-proposal::backdrop{backdrop-filter:blur(2px);background:#0d21377a}.problem-v2-proposal-panel{overscroll-behavior:contain;max-height:min(90vh,58rem);overflow-y:auto}.problem-v2-proposal-head{z-index:1;border-bottom:1px solid var(--tdb-rule,var(--rule));background:var(--tdb-surface,white);justify-content:space-between;align-items:flex-start;gap:1rem;padding:1rem 1.15rem;display:flex;position:sticky;top:0}.problem-v2-proposal-head h2{margin:0;font-size:1rem;font-weight:650}.problem-v2-proposal-head p{color:var(--tdb-muted,var(--muted));margin:.22rem 0 0;font-size:.7rem}.problem-v2-proposal-close{border:1px solid var(--tdb-rule,var(--rule));border-radius:var(--tdb-radius,3px);color:var(--tdb-muted,var(--muted));flex:none;padding:.35rem .55rem;font-size:.65rem}.problem-v2-proposal-close:hover{border-color:var(--tdb-accent,var(--accent));color:var(--tdb-accent,var(--accent))}.problem-v2-proposal-close:focus-visible{outline:2px solid var(--tdb-accent,var(--accent));outline-offset:2px}.problem-v2-proposal-body{max-width:50rem;padding:1rem 1.15rem 1.4rem}.problem-v2-qualification-guide{border:1px solid var(--tdb-rule,var(--rule));background:var(--tdb-canvas,var(--bg));margin-top:1rem;padding:.75rem}.problem-v2-qualification-guide h3{margin:0;font-size:.75rem;font-weight:650}.problem-v2-qualification-guide ol{gap:.55rem;margin:.65rem 0;padding:0;list-style:none;display:grid}.problem-v2-qualification-guide li{grid-template-columns:8rem minmax(0,1fr);gap:.65rem;font-size:.66rem;line-height:1.45;display:grid}.problem-v2-qualification-guide li span,.problem-v2-qualification-guide p{color:var(--tdb-muted,var(--muted))}.problem-v2-qualification-guide p{margin:0;font-size:.66rem;line-height:1.5}.problem-v2-proposal-body>p:first-child{max-width:42rem;color:var(--tdb-muted,var(--muted));font-size:.72rem;line-height:1.55}.problem-v2-proposal-agent{width:min(100% - 2rem,36rem)}.problem-v2-agent-notice{max-width:36rem}.problem-v2-agent-notice>p{max-width:31rem;color:var(--tdb-muted,var(--muted));margin:0 0 .8rem;font-size:.76rem;line-height:1.6}.problem-v2-agent-actions{align-items:center;gap:.8rem;margin-top:1.1rem;display:flex}.problem-v2-agent-actions a{color:var(--tdb-accent,var(--accent));font-size:.7rem;font-weight:650}.problem-v2-agent-actions .problem-v2-agent-primary{border:1px solid var(--tdb-accent,var(--accent));border-radius:var(--tdb-radius,3px);background:var(--tdb-accent,var(--accent));color:#fff;padding:.52rem .72rem;text-decoration:none}.problem-v2-form{gap:.65rem;margin-top:1rem;display:grid}.problem-v2-form label{gap:.25rem;display:grid}.problem-v2-form input,.problem-v2-form select,.problem-v2-form textarea{font-family:var(--font-sans);padding:.48rem .55rem;font-size:.72rem;line-height:1.45}.problem-v2-form textarea{resize:vertical}.problem-v2-form-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:.65rem;display:grid}.problem-v2-form-row-project{grid-template-columns:1fr 1fr}.problem-v2-source-fields{border:1px solid var(--tdb-rule,var(--rule));gap:.65rem;margin:0;padding:.75rem;display:grid}.problem-v2-source-fields legend{color:var(--tdb-ink,var(--navy));padding-inline:.3rem;font-size:.65rem;font-weight:650}.problem-v2-form>button{justify-self:start;padding:.52rem .8rem}.problem-v2-form-status,.problem-v2-note{font-family:var(--font-mono);color:var(--tdb-muted,var(--muted));margin-top:.65rem;font-size:.59rem}@media (width<=980px){.problem-v2-filters{grid-template-columns:minmax(14rem,1fr) minmax(9rem,12rem)}}@media (width<=720px){.problems-v2{padding-top:1.6rem}.problem-v2-header{align-items:start}.problem-v2-directory-head{flex-direction:column;align-items:start}.problem-v2-filters{grid-template-columns:1fr 1fr}.problem-v2-search{grid-column:1/-1}.problem-v2-summary{flex-wrap:wrap}.problem-v2-active-filters{width:100%}.problem-v2-table-wrap{border-left:0;border-right:0;overflow:visible}.problem-v2-table{min-width:0}.problem-v2-table thead{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.problem-v2-table,.problem-v2-table tbody{display:block}.problem-v2-row{border-top:1px solid var(--tdb-rule,var(--rule));flex-wrap:wrap;align-items:baseline;gap:.15rem .5rem;padding:.7rem .15rem;display:flex;position:relative}.problem-v2-row:first-child{border-top:0}.problem-v2-row td{border:0;padding:0;display:block}.problem-v2-row td:before{content:none!important}.problem-v2-title{white-space:normal;font-size:.9rem}.problem-v2-primary{flex:100%;padding:0!important}.problem-v2-row td.problem-v2-field,.problem-v2-row td.problem-v2-by{flex:none;width:auto;margin-top:.2rem;padding:0}.problem-v2-field-chip{max-width:60vw}.problem-v2-by-link{font-size:.78rem}.problem-v2-row td.problem-v2-activity{display:none}.problem-v2-message,.problem-v2-message td{display:block}.problem-v2-message td{padding:.9rem .15rem}.problem-v2-form-row{grid-template-columns:1fr}}@media (width<=480px){.problems-v2{padding-inline:.85rem}.problem-v2-header{flex-direction:column;gap:1rem}.problem-v2-submit-link{text-align:center;width:100%}.problem-v2-tabs{width:100%}.problem-v2-tabs button{flex:1}.problem-v2-filters{grid-template-columns:1fr}.problem-v2-search{grid-column:auto}}@media (prefers-reduced-motion:reduce){.problem-v2-loading td{animation:none}}.problem-v2-bounty-chip{background:var(--tdb-accent-soft,#eef1fe);color:var(--tdb-accent,#4f46e5);border-radius:999px;padding:0 .45em;font-size:.72rem;font-weight:600;display:inline-block}.problem-v2-row:hover{background:#0d213706}.problem-v2-title{color:var(--tdb-ink,#0d2137);font-size:.95rem;font-weight:650;text-decoration:none}.problem-v2-title:hover{color:var(--tdb-accent,#4f46e5)}.problem-v2-quiet-tags{vertical-align:baseline;gap:.4rem;margin-left:.6rem;display:inline-flex}.problem-v2-quiet-tag{color:var(--tdb-muted,#6d7a83);font-size:.7rem}.problem-v2-review-label{color:#78500d;font-weight:600}.problem-v2-review-label.is-reviewed{color:var(--tdb-positive,#277451)}.problem-v2-field-chip{border:1px solid var(--tdb-rule,#e6e3d9);background:var(--tdb-canvas,#fff);color:var(--tdb-body,#3d4b57);white-space:nowrap;border-radius:999px;padding:.05rem .55rem;font-size:.74rem;display:inline-block}.problem-v2-by{color:var(--tdb-muted,#6d7a83);white-space:nowrap;font-size:.78rem}.problem-v2-activity-inner{color:var(--tdb-muted,#6d7a83);font-size:.78rem}.problem-v2-table{table-layout:fixed;min-width:48rem}.problem-v2-table th:nth-child(2){min-width:11rem}.problem-v2-table th:nth-child(3){min-width:5.5rem}.problem-v2-field-chip{white-space:nowrap;text-overflow:ellipsis;vertical-align:bottom;max-width:10.5rem;line-height:1.5;display:inline-block;overflow:hidden}.problem-v2-field{padding-right:1rem}.problem-v2-layout{grid-template-columns:15rem minmax(0,1fr);align-items:start;gap:2rem;display:grid}.problem-v2-tree{position:sticky;top:5rem}.problem-v2-tree-title{letter-spacing:.06em;text-transform:uppercase;color:var(--tdb-muted,#6d7a83);margin:0 0 .5rem;font-size:.72rem;font-weight:650}.problem-v2-tree-list{border-top:1px solid var(--tdb-rule,#e6e3d9);margin:0;padding:0;list-style:none}.problem-v2-tree-list :is(button,a){width:100%;font:inherit;color:var(--tdb-body,#3d4b57);cursor:pointer;text-align:left;background:0 0;border:0;border-radius:6px;justify-content:space-between;align-items:baseline;gap:.75rem;padding:.5rem .35rem;font-size:.86rem;text-decoration:none;display:flex}.problem-v2-tree-list :is(button,a):hover{color:var(--tdb-ink,#0d2137);background:#0d213708}.problem-v2-tree-list :is(button,a):is([aria-current=true],[aria-current=location]){color:var(--tdb-accent,#4f46e5);font-weight:600}.problem-v2-tree-count{color:var(--tdb-muted,#6d7a83);font-variant-numeric:tabular-nums;font-size:.75rem}.problem-v2-tree-loading{color:var(--tdb-muted,#6d7a83);padding:.5rem .35rem;font-size:.8rem}@media (width<=860px){.problem-v2-layout{grid-template-columns:1fr}.problem-v2-tree{position:static}}.problem-v2-tree-parent-btn span:first-child{color:var(--tdb-ink,#0d2137);font-weight:600}.problem-v2-tree-kids{margin:0 0 .35rem;padding:0 0 0 .85rem;list-style:none}.problem-v2-table td{padding-top:.5rem;padding-bottom:.5rem}.problem-v2-title{font-size:.9rem}a.problem-v2-field-chip{cursor:pointer;text-decoration:none}a.problem-v2-field-chip:hover{border-color:var(--tdb-accent,#4f46e5);color:var(--tdb-accent,#4f46e5)}.problem-v2-tree-list :is(button,a):is([aria-current=true],[aria-current=location]){box-shadow:inset 2px 0 0 var(--tdb-accent,#4f46e5)}.problem-v2-tree-title{letter-spacing:0;text-transform:none;color:var(--tdb-ink,#0d2137);margin-bottom:.35rem;font-size:.82rem;font-weight:650}.problem-v2-tree-list{border-top:0}.problem-v2-tree-list>li{border-bottom:0}.problem-v2-tree-list :is(button,a){border-radius:5px;padding:.26rem .4rem;font-size:.84rem}.problem-v2-tree-list :is(button,a):is([aria-current=true],[aria-current=location]){color:var(--tdb-ink,#0d2137);box-shadow:none;background:0 0;font-weight:650}.problem-v2-tree-list :is(button,a):is([aria-current=true],[aria-current=location]) .problem-v2-tree-count{color:var(--tdb-ink,#0d2137)}.problem-v2-tree-kids{margin-bottom:.2rem}.problem-v2-tree-kids :is(button,a){padding-block:.22rem;font-size:.82rem}.problem-v2-section-family-link{color:var(--tdb-muted,#6d7a83)!important;padding-left:.7rem!important}.problem-v2-section-family-link[aria-current=location]{color:var(--tdb-ink,#0d2137)!important}.field-hue-number-theory{--hue-bg:#e8ebfa;--hue-ink:#4047c8}.field-hue-algebra{--hue-bg:#f1e8fb;--hue-ink:#6d28d9}.field-hue-designs-codes{--hue-bg:#fbe7f1;--hue-ink:#a12a6b}.field-hue-dynamics-probability{--hue-bg:#fbe8e8;--hue-ink:#a13333}.field-hue-graphs{--hue-bg:#fbe9dd;--hue-ink:#9c4a12}.field-hue-combinatorics{--hue-bg:#f8eed6;--hue-ink:#8a6108}.field-hue-mathematical-physics{--hue-bg:#e9f1e0;--hue-ink:#4d7c0f}.field-hue-analysis{--hue-bg:#dcf0ea;--hue-ink:#0f766e}.field-hue-geometry-topology{--hue-bg:#ddeff8;--hue-ink:#0e6a8a}.field-hue-logic-computation{--hue-bg:#e6eaf0;--hue-ink:#475569}.field-hue-other-fields{--hue-bg:#f0f0ed;--hue-ink:#6d7169}.problem-v2-field-chip[class*=field-hue-]{background:var(--hue-bg);color:var(--hue-ink);border-color:#0000;font-weight:550}.problem-v2-field-chip[class*=field-hue-]:hover{color:var(--hue-ink);filter:brightness(.96)}.pv-cat-dot{background:var(--hue-ink,#c6cdd4);vertical-align:baseline;border-radius:999px;width:.5rem;height:.5rem;margin-right:.45rem;display:inline-block}.problem-v2-bounty-chip{border:1px solid color-mix(in srgb, var(--tdb-positive,#277451) 24%, transparent);border-radius:var(--tdb-radius,3px);background:color-mix(in srgb, var(--tdb-positive,#277451) 10%, white);color:var(--tdb-positive,#277451);font-family:var(--font-mono);flex:none;font-size:.68rem;font-weight:650;line-height:1.35}.problem-v2-by-link{color:var(--tdb-muted,#6d7a83);text-decoration:none}.problem-v2-by-link:hover{color:var(--tdb-accent,#4f46e5);text-decoration:underline}.problems-v2 .problem-v2-tree{border:1px solid var(--tdb-rule,#e6e3d9);background:var(--tdb-surface,#faf9f5);max-height:calc(100vh - 7rem);padding:.85rem .8rem .95rem;overflow-y:auto;box-shadow:0 1px 2px #0d21370a}.problems-v2 .problem-v2-layout{grid-template-columns:16.5rem minmax(0,1fr);margin-top:1.25rem}.problems-v2 .problem-v2-field-filter[hidden]+.problem-v2-directory{grid-column:1/-1}.problems-v2 .problem-v2-tree-list :is(button,a){border-radius:var(--tdb-radius,3px)}.problems-v2 .problem-v2-tree-list :is(button,a):hover{background:#0d21370a}.problem-v2-tree-parent-btn:before{content:"▸";transform-origin:.28em;width:.85rem;color:color-mix(in srgb, var(--tdb-muted,#6d7a83) 75%, transparent);flex:none;font-size:.95em;line-height:1;transition:transform .12s}.problem-v2-tree-parent-btn:hover:before{color:var(--tdb-accent,#4f46e5)}.problem-v2-tree-parent-btn[aria-expanded=true]:before{transform:rotate(90deg)}.problem-v2-tree-parent-btn>span:first-of-type{text-align:left;flex:1;min-width:0}@media (prefers-reduced-motion:reduce){.problem-v2-tree-parent-btn:before{transition:none}}.problem-v2-table th{font-family:var(--tdb-font-interface,var(--font-sans,sans-serif));letter-spacing:0;text-transform:none;color:var(--tdb-muted,#6d7a83);font-size:.72rem;font-weight:600}.problem-v2-table td{vertical-align:middle}.problem-v2-table th:first-child{text-align:left;width:55%}.problem-v2-table th:nth-child(2){text-align:left;width:18%}.problem-v2-table th:nth-child(3){text-align:left;width:12%}.problem-v2-table th:last-child{text-align:left;width:10%}.problem-v2-field-filter{min-width:0}.problem-v2-field-filter[hidden]{display:none!important}.problem-v2-field-filter-toggle{display:none}@media (width>=861px){.problem-v2-field-filter{position:sticky;top:5rem}.problems-v2 .problem-v2-field-filter .problem-v2-tree{position:static}}@media (width<=860px){.problems-v2 .problem-v2-layout{grid-template-columns:minmax(0,1fr);gap:.65rem}.problem-v2-field-filter{z-index:4;position:relative;top:auto}.problem-v2-field-filter-toggle{border:1px solid var(--tdb-rule,var(--rule));border-radius:var(--tdb-radius,3px);background:var(--tdb-surface,white);width:min(100%,22rem);min-height:2.35rem;color:var(--tdb-ink,var(--navy));text-align:left;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:.55rem;padding:.45rem .65rem;display:grid;box-shadow:0 1px 2px #0d21370a}.problem-v2-field-filter-toggle:hover{border-color:color-mix(in srgb, var(--tdb-accent,var(--accent)) 55%, var(--tdb-rule,var(--rule)))}.problem-v2-field-filter-toggle:focus-visible{outline:2px solid var(--tdb-accent,var(--accent));outline-offset:2px}.problem-v2-field-filter-label{font-size:.72rem;font-weight:650}.problem-v2-field-filter-value{text-overflow:ellipsis;white-space:nowrap;min-width:0;color:var(--tdb-muted,var(--muted));font-size:.72rem;overflow:hidden}.problem-v2-field-filter-caret{width:.45rem;height:.45rem;color:var(--tdb-muted,var(--muted));border-bottom:1.5px solid;border-right:1.5px solid;transition:transform .12s;transform:translateY(-.1rem)rotate(45deg)}.problem-v2-field-filter.is-open .problem-v2-field-filter-caret{transform:translateY(.1rem)rotate(225deg)}.problems-v2 .problem-v2-tree{overscroll-behavior:contain;width:min(100%,22rem);max-height:min(66vh,30rem);display:none;position:absolute;top:calc(100% + .4rem);left:0;box-shadow:0 .75rem 2rem #0d213726}.problem-v2-field-filter.is-open .problem-v2-tree{display:block}.problem-v2-directory{min-width:0;margin-top:0}}@media (prefers-reduced-motion:reduce){.problem-v2-field-filter-caret{transition:none}}.problem-v2-lanes{border-bottom:1px solid var(--tdb-rule,var(--rule));flex-wrap:wrap;gap:1.4rem;display:flex}.problem-v2-lanes button{color:var(--tdb-muted,var(--muted));cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;align-items:baseline;gap:.45rem;margin-bottom:-1px;padding:.5rem 0 .55rem;font-size:.85rem;font-weight:560;display:inline-flex}.problem-v2-lanes button:hover{color:var(--tdb-accent,var(--accent))}.problem-v2-lanes button[aria-selected=true]{border-bottom-color:var(--tdb-accent,var(--accent));color:var(--tdb-ink,var(--navy))}.problem-v2-lane-count{color:var(--tdb-muted,var(--muted));font-variant-numeric:tabular-nums;font-size:.7rem}.problem-v2-lane-count:empty{display:none}.problem-v2-lane-note{max-width:46rem;color:var(--tdb-muted,var(--muted));margin:.7rem 0 .9rem;font-size:.8rem;line-height:1.6}.problem-v2-lane-tag{border-color:color-mix(in srgb, var(--tdb-accent,var(--accent)) 28%, var(--tdb-rule,var(--rule)));color:var(--tdb-accent,var(--accent))}.problem-v2-table[data-activity=off] th:nth-child(4),.problem-v2-table[data-activity=off] td.problem-v2-activity{display:none}@media (width<=40rem){.problem-v2-state{padding:.12rem .4rem;font-size:.64rem}.problem-v2-field-chip{max-width:55vw}}.problem-v2-active-filters{flex-wrap:wrap;align-items:center;gap:.3rem;display:flex}.problem-v2-active-filters[hidden]{display:none}.problem-v2-filter-chip{border:1px solid var(--tdb-rule-strong,#b9bbb3);background:var(--tdb-canvas,#fff);font-family:var(--tdb-font-interface,inherit);color:var(--tdb-ink,#151719);cursor:pointer;border-radius:999px;align-items:center;gap:.3rem;padding:.1rem .45rem;font-size:.66rem;font-weight:600;display:inline-flex}.problem-v2-filter-chip:hover{border-color:var(--tdb-accent,#24406e);color:var(--tdb-accent,#24406e)}.problem-v2-filter-x{color:var(--tdb-faint,#8b8d86);font-size:.8rem;line-height:1}.problem-v2-filter-reset{color:var(--tdb-accent,#24406e);cursor:pointer;text-underline-offset:.16em;background:0 0;border:0;padding:.1rem .2rem;font-size:.66rem;font-weight:600;text-decoration:underline}.problem-v2-empty{text-align:center;color:var(--tdb-muted,#6d7a83);padding:2rem 1rem!important}.problem-v2-empty-actions{flex-wrap:wrap;justify-content:center;gap:.9rem;margin-top:.7rem;display:flex}.problem-v2-empty-link{color:var(--tdb-accent,#24406e);font-size:.78rem;font-weight:600}.problems-v2 .problem-v2-table:not(.submissions-v2-table){min-width:58rem}.problems-v2 .problem-v2-table:not(.submissions-v2-table) th:first-child{text-align:left;width:auto;min-width:22rem}.problems-v2 .problem-v2-table:not(.submissions-v2-table) th:nth-child(2){text-align:left;width:8rem}.problems-v2 .problem-v2-table:not(.submissions-v2-table) th:nth-child(3){text-align:left;width:7rem}.problems-v2 .problem-v2-table:not(.submissions-v2-table) th:nth-child(4){text-align:right;width:5rem}.problems-v2 .problem-v2-table:not(.submissions-v2-table) th:nth-child(5){text-align:left;width:9.5rem}.problems-v2 .problem-v2-table:not(.submissions-v2-table) th:nth-child(6){text-align:right;width:6rem}.problem-v2-id-cell{min-width:0;font-family:var(--font-mono);font-size:.7rem!important}.problem-v2-id-link{color:var(--tdb-muted,var(--muted));text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.problem-v2-id-link:hover{color:var(--tdb-accent,var(--accent));text-underline-offset:.18em;text-decoration:underline}.problem-v2-updated{text-align:right;white-space:nowrap}.problem-v2-attempts,.problem-v2-lean-status-cell{white-space:nowrap}.problem-v2-title-line{align-items:baseline;gap:.4rem;min-width:0;display:flex}.problem-v2-title-line .problem-v2-title{min-width:0}.problem-v2-lean-status{border:1px solid color-mix(in srgb, var(--tdb-warning,#835b22) 25%, transparent);border-radius:var(--tdb-radius,3px);background:color-mix(in srgb, var(--tdb-warning,#835b22) 10%, white);color:var(--tdb-warning,#835b22);white-space:nowrap;padding:.14rem .42rem;font-size:.68rem;font-weight:620;line-height:1.3;display:inline-flex}.problem-v2-lean-status[data-lean-verified=true]{border-color:color-mix(in srgb, var(--tdb-positive,#277451) 25%, transparent);background:color-mix(in srgb, var(--tdb-positive,#277451) 10%, white);color:var(--tdb-positive,#277451)}.problem-v2-state[data-state=resolved-unverified]{border-color:color-mix(in srgb, var(--tdb-warning,#835b22) 25%, transparent);background:color-mix(in srgb, var(--tdb-warning,#835b22) 10%, white);color:var(--tdb-warning,#835b22)}@media (width<=720px){.problems-v2 .problem-v2-table:not(.submissions-v2-table){min-width:0}.problems-v2 .problem-v2-table:not(.submissions-v2-table) thead th{width:1px!important;min-width:0!important;padding:0!important}.problems-v2 .problem-v2-table:not(.submissions-v2-table) .problem-v2-row{padding-left:.15rem}.problems-v2 .problem-v2-table:not(.submissions-v2-table) .problem-v2-primary{order:1}.problems-v2 .problem-v2-table:not(.submissions-v2-table) .problem-v2-state-cell,.problems-v2 .problem-v2-table:not(.submissions-v2-table) .problem-v2-lean-status-cell{order:2;margin-top:.2rem}.problems-v2 .problem-v2-table:not(.submissions-v2-table) .problem-v2-lean-status-cell:empty{display:none}.problems-v2 .problem-v2-table:not(.submissions-v2-table) .problem-v2-field{order:3;margin-top:.2rem}.problems-v2 .problem-v2-table:not(.submissions-v2-table) .problem-v2-number{font-family:var(--tdb-font-interface,var(--font-sans));text-align:left;color:var(--tdb-muted,var(--muted));order:4;margin-top:.25rem;font-size:.72rem!important}.problems-v2 .problem-v2-table:not(.submissions-v2-table) .problem-v2-number:before{font-weight:600;content:attr(data-label) ": "!important}.problem-v2-title-line{align-items:flex-start}.problem-v2-title-line .problem-v2-title{flex:auto}}.problems-v2 #directory-form{grid-template-columns:minmax(15rem,1fr) minmax(9rem,11rem) minmax(9rem,12rem)}.problem-v2-context{white-space:nowrap;gap:.45rem;min-width:0;margin-top:.2rem;display:flex;overflow:hidden}.problem-v2-context-link,.problem-v2-context .problem-v2-quiet-tag{color:var(--tdb-muted,var(--muted));text-overflow:ellipsis;font-size:.68rem;text-decoration:none;overflow:hidden}.problem-v2-context-link+.problem-v2-context-link:before{content:"·";color:var(--tdb-faint,#8b8d86);margin-right:.45rem}.problem-v2-context-link:hover{color:var(--tdb-accent,var(--accent));text-underline-offset:.16em;text-decoration:underline}.problem-v2-context-link:focus-visible,.problem-v2-group-row button:focus-visible,.problem-v2-family-row button:focus-visible{outline:2px solid var(--tdb-accent,var(--accent));outline-offset:2px}.problem-v2-group-row th,.problem-v2-family-row th{border-top:1px solid var(--tdb-rule,var(--rule));border-bottom:1px solid var(--tdb-rule,var(--rule));background:var(--tdb-canvas,var(--bg));text-align:left;padding:0}.problem-v2-group-row,.problem-v2-family-row{scroll-margin-top:6.5rem}.problem-v2-group-row:first-child th{border-top:0}.problem-v2-group-row button,.problem-v2-family-row button{width:100%;min-height:2.1rem;color:var(--tdb-ink,var(--navy));font-family:var(--tdb-font-interface,var(--font-sans));text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:.45rem;padding:.42rem .65rem;font-size:.76rem;font-weight:650;display:flex}.problem-v2-group-row button:hover,.problem-v2-family-row button:hover{color:var(--tdb-accent,var(--accent))}.problem-v2-family-row th{background:var(--tdb-surface,#fbfbf9);border-top:0}.problem-v2-family-row button{padding-left:1.35rem;font-size:.72rem;font-weight:600}.problem-v2-disclosure-caret{border-bottom:1.5px solid;border-right:1.5px solid;flex:none;width:.42rem;height:.42rem;transform:rotate(-45deg)}[aria-expanded=true]>.problem-v2-disclosure-caret{transform:translateY(-.08rem)rotate(45deg)}.problem-v2-group-count{color:var(--tdb-muted,var(--muted));font-variant-numeric:tabular-nums;margin-left:auto;font-size:.66rem;font-weight:500}.problem-v2-group-pagination-row td{border-top:1px solid var(--tdb-rule,var(--rule));background:var(--tdb-surface,#fbfbf9);padding:0}.problem-v2-group-pagination{justify-content:flex-end;align-items:center;gap:.65rem;min-height:2.55rem;padding:.35rem .65rem;display:flex}.problem-v2-group-pagination p{min-width:6.5rem;color:var(--tdb-muted,var(--muted));font-family:var(--tdb-font-interface,var(--font-sans));text-align:center;font-variant-numeric:tabular-nums;margin:0;font-size:.66rem}.problem-v2-group-pagination button{color:var(--tdb-accent,var(--accent));font-family:var(--tdb-font-interface,var(--font-sans));cursor:pointer;background:0 0;border:0;padding:.25rem .35rem;font-size:.68rem;font-weight:620}.problem-v2-group-pagination button:hover:not(:disabled){text-underline-offset:.16em;text-decoration:underline}.problem-v2-group-pagination button:focus-visible{outline:2px solid var(--tdb-accent,var(--accent));outline-offset:2px}.problem-v2-group-pagination button:disabled{color:var(--tdb-muted,var(--muted));cursor:default;opacity:.5}.problem-v2-family-kind{border:1px solid var(--tdb-rule,var(--rule));border-radius:var(--tdb-radius,3px);color:var(--tdb-muted,var(--muted));padding:.05rem .3rem;font-size:.6rem;font-weight:500}.problems-v2 .problem-v2-table .problem-v2-family-child .problem-v2-primary{padding-left:1.8rem}.problem-v2-group-row[hidden],.problem-v2-family-row[hidden],.problem-v2-group-pagination-row[hidden],.problem-v2-row[hidden]{display:none}@media (width<=980px){.problems-v2 #directory-form{grid-template-columns:minmax(13rem,1fr) minmax(8.5rem,10rem) minmax(8.5rem,10rem)}}@media (width<=720px){.problems-v2 #directory-form{grid-template-columns:1fr 1fr}.problems-v2 #directory-form .problem-v2-search{grid-column:1/-1}.problem-v2-group-row,.problem-v2-family-row,.problem-v2-group-row th,.problem-v2-family-row th{display:block}.problems-v2 .problem-v2-table .problem-v2-group-row th,.problems-v2 .problem-v2-table .problem-v2-family-row th{width:100%!important;min-width:0!important}.problem-v2-group-row button,.problem-v2-family-row button{min-height:2.75rem}.problem-v2-context{max-width:100%}.problems-v2 .problem-v2-table .problem-v2-family-child{padding-left:.85rem}.problems-v2 .problem-v2-table .problem-v2-family-child .problem-v2-primary{padding-left:0!important}}@media (width<=480px){.problems-v2 #directory-form{grid-template-columns:1fr}.problems-v2 #directory-form .problem-v2-search{grid-column:auto}}
