.KTKtWW_page.KTKtWW_page{background:0 0;min-height:0;padding:20px 16px 72px}@media (min-width:768px){.KTKtWW_page.KTKtWW_page{padding:32px 28px 96px}}.KTKtWW_inner{max-width:1180px;margin-inline:auto}.KTKtWW_head{gap:28px;padding-bottom:8px;display:grid}@media (min-width:1024px){.KTKtWW_head{grid-template-columns:minmax(0,1fr) 460px;align-items:center;gap:72px}}.KTKtWW_headText{min-width:0}.KTKtWW_eyebrow{font-family:var(--mono);color:var(--ink3);flex-wrap:wrap;align-items:center;gap:6px 12px;font-size:13px;display:flex}.KTKtWW_title{letter-spacing:-.045em;text-wrap:balance;margin-top:12px;font-size:40px;font-weight:500;line-height:1.04}@media (min-width:768px){.KTKtWW_title{font-size:56px}}.KTKtWW_lead{max-width:44ch;min-height:30px;color:var(--ink2);text-wrap:pretty;margin-top:14px;font-size:18px;line-height:1.55}.KTKtWW_leadSkel{background:#ffffff0f;border-radius:12px;width:min(360px,90%);height:24px;display:block}.KTKtWW_guestNote{max-width:52ch;color:var(--ink2);margin-top:6px;font-size:14px;line-height:1.55}.KTKtWW_guestNote a{color:var(--accent);text-underline-offset:3px;text-decoration:underline}.KTKtWW_page.KTKtWW_guest{background:var(--room);min-height:100vh;padding-top:0}.KTKtWW_bar{z-index:20;margin-inline:-16px;border-bottom:1px solid var(--line);background:#0f1012;margin-bottom:24px;position:sticky;top:0}.KTKtWW_barIn{justify-content:space-between;align-items:center;gap:12px;max-width:1180px;height:56px;margin-inline:auto;padding-inline:16px;display:flex}@media (min-width:768px){.KTKtWW_bar{margin-inline:-28px;margin-bottom:32px}.KTKtWW_barIn{padding-inline:28px}}.KTKtWW_crumb{min-height:44px;color:var(--ink2);transition:color var(--dur) var(--ease);align-items:center;gap:6px;font-size:14px;font-weight:500;display:inline-flex}.KTKtWW_crumb:hover{color:#fff}.KTKtWW_brand{color:var(--ink);white-space:nowrap;align-items:center;gap:8px;font-size:14px;font-weight:500;display:inline-flex}.KTKtWW_brand svg{color:var(--accent)}.KTKtWW_nextWrap{min-width:0}.KTKtWW_nextBar{isolation:isolate;text-align:left;width:100%;min-height:68px;transition:border-color var(--dur) var(--ease), transform .12s var(--ease);background:linear-gradient(#16171b,#111214);border:1px solid #3b9eff66;border-radius:9999px;align-items:center;gap:14px;padding:8px 8px 8px 22px;display:flex;position:relative;box-shadow:inset 0 0 0 1px #3b9eff14,0 24px 60px -28px #0a84ffa6}a.KTKtWW_nextBar:hover{border-color:#78beffb3}a.KTKtWW_nextBar:active{transform:scale(.99)}.KTKtWW_pillText{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.KTKtWW_pillHint{min-width:0;color:var(--ink3);white-space:nowrap;align-items:center;gap:8px;font-size:13px;display:flex}.KTKtWW_pillHint .KTKtWW_diff{margin-left:2px;font-size:12px}.KTKtWW_pillMain{letter-spacing:-.015em;color:var(--ink);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:18px;font-weight:500;line-height:1.3;display:-webkit-box;overflow:hidden}.KTKtWW_pillGo{color:#0a0a0b;width:48px;height:48px;transition:transform var(--dur) var(--ease);background:#fff;border-radius:50%;flex:none;place-items:center;display:grid}a.KTKtWW_nextBar:hover .KTKtWW_pillGo{transform:translate(2px)}.KTKtWW_pillGoDim{background:#ffffff14}.KTKtWW_pillSkel{background:#ffffff12;border-radius:9px;width:55%;height:18px;display:block}@media (prefers-reduced-motion:no-preference){.KTKtWW_pillSkel{animation:1.6s ease-in-out infinite KTKtWW_prSkel}}.KTKtWW_pillMeta{font-family:var(--mono);color:var(--ink3);flex-wrap:wrap;gap:2px 14px;margin-top:12px;padding-left:22px;font-size:12px;display:flex}.KTKtWW_allDone{border:1px solid var(--line2);min-height:68px;color:var(--ink2);border-radius:9999px;align-items:center;gap:10px;padding:0 22px;font-size:16px;display:flex}.KTKtWW_allDone svg{color:var(--ok)}.KTKtWW_set{--hair-c:var(--line2);margin-top:40px;padding-top:20px}.KTKtWW_setHead{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:6px 24px;display:flex}.KTKtWW_h2{letter-spacing:-.02em;font-size:22px;font-weight:500;line-height:1.2}.KTKtWW_setSolved{font-family:var(--mono);color:var(--ink3);align-items:baseline;gap:8px;font-size:14px;display:flex}.KTKtWW_setSolved b{letter-spacing:-.03em;color:var(--ink);font-size:28px;font-weight:500;line-height:1}.KTKtWW_setBody{margin-top:18px}.KTKtWW_setRow{grid-template-columns:60px minmax(0,1fr) 48px;align-items:start;gap:12px;padding:8px 0;display:grid}@media (min-width:768px){.KTKtWW_setRow{grid-template-columns:76px minmax(0,1fr) 56px;gap:16px;padding:9px 0}}.KTKtWW_tEasy{--tone:var(--ok)}.KTKtWW_tMedium{--tone:var(--warn)}.KTKtWW_tHard{--tone:var(--err)}.KTKtWW_setName{min-height:14px;color:var(--ink2);align-items:center;gap:8px;font-size:13px;display:inline-flex}.KTKtWW_setName:before{content:"";background:var(--tone);border-radius:50%;width:6px;height:6px}.KTKtWW_setNum{font-family:var(--mono);text-align:right;color:var(--ink3);font-size:13px}.KTKtWW_setNum b{color:var(--ink);font-weight:500}.KTKtWW_bricks{flex-wrap:wrap;gap:4px;min-width:0;display:flex}.KTKtWW_brick{width:15px;height:10px;transition:filter var(--dur) var(--ease), transform var(--dur) var(--ease);border-radius:3px;flex:none;display:block}@media (min-width:768px){.KTKtWW_brick{width:22px}}.KTKtWW_bSolved{background:var(--tone)}.KTKtWW_bTried{background:linear-gradient(90deg, var(--tone) 50%, transparent 50%);box-shadow:0 0 0 1px var(--tone) inset}.KTKtWW_bNone{box-shadow:0 0 0 1px color-mix(in srgb, var(--tone) 42%, transparent) inset}a.KTKtWW_brick:hover,.KTKtWW_bHover{filter:brightness(1.35);transform:translateY(-1px)}.KTKtWW_bNext{background:#fff;box-shadow:0 0 0 1px #fff,0 0 14px 2px #3b9effd9}@media (prefers-reduced-motion:no-preference){.KTKtWW_bNext{animation:2.4s ease-in-out infinite KTKtWW_prPulse}}@keyframes KTKtWW_prPulse{0%,to{box-shadow:0 0 0 1px #fff,0 0 8px 1px #3b9eff99}50%{box-shadow:0 0 0 1px #fff,0 0 18px 4px #3b9efff2}}@media (pointer:coarse){a.KTKtWW_brick{pointer-events:none}}.KTKtWW_setCaption{border-top:1px solid var(--line);flex-wrap:wrap;align-items:baseline;gap:2px 14px;min-height:44px;margin-top:6px;padding-top:12px;font-size:14px;display:flex}.KTKtWW_capNum{font-family:var(--mono);color:#9fceff;font-size:13px}.KTKtWW_capTitle{color:var(--ink);font-weight:500}.KTKtWW_capMeta{font-family:var(--mono);color:var(--ink3);font-size:13px}.KTKtWW_legend{color:var(--ink2);flex-wrap:wrap;gap:4px 18px;font-size:13px;display:flex}.KTKtWW_legend span{align-items:center;gap:8px;display:inline-flex}.KTKtWW_key{--tone:#fffc;border-radius:2px;width:14px;height:8px;display:inline-block}@media (prefers-reduced-motion:no-preference){.KTKtWW_key.KTKtWW_bNext{animation:none}}.KTKtWW_filters{--hair-c:var(--line2);flex-wrap:wrap;align-items:center;gap:12px;margin-top:48px;padding-top:20px;display:flex}.KTKtWW_search{flex:260px;min-width:0;max-width:440px;position:relative}.KTKtWW_searchIcon{color:var(--ink3);pointer-events:none;position:absolute;top:50%;left:16px;translate:0 -50%}.KTKtWW_input{border:1px solid var(--line2);background:var(--glass);width:100%;min-height:44px;color:var(--ink);outline-offset:2px;transition:border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);border-radius:9999px;padding:0 48px 0 44px;font-size:15px}.KTKtWW_input::placeholder{color:var(--ink3)}.KTKtWW_input::-webkit-search-cancel-button{appearance:none}.KTKtWW_input::-webkit-search-decoration{appearance:none}.KTKtWW_clear{width:32px;height:32px;color:var(--ink2);transition:background-color var(--dur) var(--ease), color var(--dur) var(--ease);border-radius:50%;place-items:center;display:grid;position:absolute;top:50%;right:8px;translate:0 -50%}.KTKtWW_clear:hover{color:var(--ink);background:#ffffff17}.KTKtWW_input:hover{border-color:#ffffff3d}.KTKtWW_input:focus{background:#ffffff0d;border-color:#3b9effb3}.KTKtWW_kbd{border:1px solid var(--line2);min-width:24px;height:24px;font-family:var(--mono);color:var(--ink3);pointer-events:none;border-radius:6px;place-items:center;padding:0 6px;font-size:12px;display:grid;position:absolute;top:50%;right:14px;translate:0 -50%}.KTKtWW_diffs{flex-wrap:wrap;gap:6px;display:inline-flex}.KTKtWW_pill{border:1px solid var(--line2);min-height:44px;color:var(--ink2);transition:background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);border-radius:9999px;padding:0 18px;font-size:14px;font-weight:500}.KTKtWW_pill:hover{color:var(--ink);border-color:#ffffff42}.KTKtWW_pill[aria-pressed=true]{color:#0a0a0b;background:#fff;border-color:#fff}.KTKtWW_select{flex:0 240px;min-width:170px}.KTKtWW_found{min-height:24px;font-family:var(--mono);color:var(--ink3);flex-wrap:wrap;align-items:center;gap:4px 14px;margin-top:16px;font-size:13px;display:flex}.KTKtWW_found b{color:var(--ink2);font-weight:500}.KTKtWW_textBtn{min-height:44px;font-family:var(--sans);color:#9fceff;text-underline-offset:3px;align-items:center;margin:-10px 0;padding:0 4px;font-size:14px;font-weight:500;-webkit-text-decoration:underline #9fceff66;text-decoration:underline #9fceff66;display:inline-flex}.KTKtWW_textBtn:hover{color:#fff;text-decoration-color:currentColor}.KTKtWW_table{--cols:28px 44px minmax(0, 1fr) 92px 20px;margin-top:8px}@media (min-width:1100px){.KTKtWW_table{--cols:28px 44px minmax(0, 1fr) 92px 132px 20px}}.KTKtWW_cols{display:none}@media (min-width:768px){.KTKtWW_cols{z-index:2;grid-template-columns:var(--cols);border-bottom:1px solid var(--line2);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);letter-spacing:.02em;min-height:40px;color:var(--ink3);background:#0f1012eb;align-items:center;gap:0 16px;padding:0 14px;font-size:12px;display:grid;position:sticky;top:82px}.KTKtWW_cols span:nth-child(5){display:none}}@media (min-width:1100px){.KTKtWW_cols span:nth-child(5){display:block}}.KTKtWW_list{margin:0}.KTKtWW_item{--hair-c:var(--line);list-style:none}.KTKtWW_row{min-height:72px;transition:background-color var(--dur) var(--ease);grid-template-columns:24px minmax(0,1fr) auto;grid-template-areas:"st title title""st meta meta";align-items:center;gap:4px 12px;padding:12px 10px;display:grid;position:relative}.KTKtWW_row:hover,.KTKtWW_row:focus-visible{background:#ffffff0b}@media (min-width:768px){.KTKtWW_row{grid-template-columns:var(--cols);grid-template-areas:none;gap:0 16px;min-height:68px;padding:0 14px}.KTKtWW_row:after{top:10px;bottom:10px}}.KTKtWW_st{grid-area:st;place-items:center;display:grid}.KTKtWW_num{font-family:var(--mono);letter-spacing:-.02em;color:var(--ink3);transition:color var(--dur) var(--ease);font-size:16px;display:none}.KTKtWW_row:hover .KTKtWW_num,.KTKtWW_row:focus-visible .KTKtWW_num{color:#9fceff}.KTKtWW_titleCell{flex-direction:column;grid-area:title;gap:3px;min-width:0;padding:2px 0;display:flex}.KTKtWW_nameLine{align-items:center;gap:10px;min-width:0;display:flex}.KTKtWW_name{letter-spacing:-.015em;min-width:0;color:var(--ink);overflow-wrap:anywhere;font-size:17px;font-weight:500;line-height:1.35}.KTKtWW_topics{font-family:var(--mono);color:var(--ink3);text-overflow:ellipsis;white-space:nowrap;font-size:12px;line-height:1.4;overflow:hidden}.KTKtWW_metaCell{font-family:var(--mono);color:var(--ink3);flex-wrap:wrap;grid-area:meta;align-items:center;gap:2px 14px;font-size:12px;display:flex}.KTKtWW_diff{font-family:var(--mono);font-size:13px;font-weight:500}.KTKtWW_dEasy{color:var(--ok)}.KTKtWW_dMedium{color:var(--warn)}.KTKtWW_dHard{color:var(--err)}.KTKtWW_dOther{color:var(--ink2)}.KTKtWW_acc{font-family:var(--mono);color:var(--ink2);align-items:center;gap:10px;font-size:13px;display:inline-flex}.KTKtWW_accBar{background:#ffffff1a;border-radius:9999px;width:44px;height:3px;position:relative;overflow:hidden}.KTKtWW_accFill{border-radius:inherit;background:#9fceffcc;height:100%;display:block;position:absolute;inset:0 auto 0 0}.KTKtWW_go{color:var(--ink3);opacity:0;transition:opacity var(--dur) var(--ease), transform var(--dur) var(--ease);display:none;transform:translate(-4px)}.KTKtWW_row:hover .KTKtWW_go,.KTKtWW_row:focus-visible .KTKtWW_go{opacity:1;color:var(--ink);transform:none}@media (min-width:768px){.KTKtWW_num{display:block}.KTKtWW_st,.KTKtWW_titleCell{grid-area:auto}.KTKtWW_metaCell{display:contents}.KTKtWW_go{display:block}}@media (max-width:1099px){.KTKtWW_acc{display:none}}@media (max-width:767px){.KTKtWW_acc{display:inline-flex}}.KTKtWW_status{display:block}.KTKtWW_sOk{color:var(--ok)}.KTKtWW_sTry{color:var(--warn)}.KTKtWW_sNone{color:#ffffff38}.KTKtWW_pager{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px 24px;margin-top:28px;padding-top:20px;display:flex}.KTKtWW_range{font-family:var(--mono);color:var(--ink3);font-size:13px}.KTKtWW_range b{color:var(--ink2);font-weight:500}.KTKtWW_pages{align-items:center;gap:6px;display:inline-flex}.KTKtWW_pg{min-width:44px;min-height:44px;font-family:var(--mono);color:var(--ink2);transition:background-color var(--dur) var(--ease), color var(--dur) var(--ease);border:1px solid #0000;border-radius:9999px;place-items:center;padding:0 8px;font-size:14px;display:grid}.KTKtWW_pg:hover:not(:disabled){color:var(--ink);background:#ffffff12}.KTKtWW_pg[aria-current=page]{border-color:var(--line2);color:var(--ink);background:#ffffff17}.KTKtWW_pg:disabled{opacity:.35;cursor:default}.KTKtWW_skel{background:#ffffff0b;border-radius:10px;height:64px;margin-top:8px}@media (prefers-reduced-motion:no-preference){.KTKtWW_skel{animation:1.6s ease-in-out infinite KTKtWW_prSkel}}@keyframes KTKtWW_prSkel{0%,to{opacity:.55}50%{opacity:1}}.KTKtWW_note{flex-direction:column;align-items:flex-start;gap:14px;max-width:520px;padding:40px 0 16px;display:flex}.KTKtWW_note h2{letter-spacing:-.02em;font-size:22px;font-weight:500}.KTKtWW_note p{color:var(--ink2);margin:0;font-size:16px}.KTKtWW_filters.KTKtWW_filters:before,.KTKtWW_set.KTKtWW_set:before{animation-range:entry 0 entry 100px}.KTKtWW_item.KTKtWW_item:before{animation-range:entry 0 entry 60px}.KTKtWW_guestFrame{background:var(--room);flex-direction:column;min-height:100vh;display:flex;overflow-x:clip}.KTKtWW_page.KTKtWW_guest.KTKtWW_guestBody{flex:1;min-height:0;padding-top:96px;padding-bottom:72px}.KTKtWW_index{border-top:1px solid var(--line);max-width:1180px;margin:72px auto 0;padding-top:40px}.KTKtWW_indexTitle{letter-spacing:-.01em;color:var(--ink);font-size:20px;font-weight:600}.KTKtWW_indexGroup{margin-top:28px}.KTKtWW_indexHead{letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);font-size:13px;font-weight:600}.KTKtWW_indexList{-moz-columns:1;columns:1;-moz-column-gap:32px;column-gap:32px;margin-top:12px}@media (min-width:640px){.KTKtWW_indexList{-moz-columns:2;columns:2}}@media (min-width:1024px){.KTKtWW_indexList{-moz-columns:3;columns:3}}.KTKtWW_indexList li{-moz-column-break-inside:avoid;break-inside:avoid;padding:5px 0;font-size:14px;line-height:1.45}.KTKtWW_indexList a{color:var(--ink2);transition:color var(--dur) var(--ease)}.KTKtWW_indexList a:hover{color:var(--ink);text-underline-offset:3px;text-decoration:underline}