.ProblemCard_card__IvdSS{position:absolute;left:var(--left);top:var(--top);width:var(--w);height:var(--h);z-index:6;display:grid;grid-template-columns:var(--photo) minmax(0,1fr);grid-template-rows:auto minmax(0,1fr);grid-template-areas:"photo bar" "photo chapter";border-radius:16px;background:radial-gradient(70% 90% at 100% 0,rgba(5,183,185,.14),transparent 60%),#0f0f10;border:1px solid rgba(255,255,255,.12);box-shadow:0 40px 100px rgba(0,0,0,.65);color:#fff;overflow:hidden;animation:ProblemCard_wipe__Rh_u4 .8s cubic-bezier(.65,0,.35,1) both;cursor:auto;will-change:clip-path}.ProblemCard_flip__mwNB6{grid-template-columns:minmax(0,1fr) var(--photo);grid-template-areas:"bar photo" "chapter photo";background:radial-gradient(70% 90% at 0 0,rgba(5,183,185,.14),transparent 60%),#0f0f10}@keyframes ProblemCard_wipe__Rh_u4{0%{clip-path:circle(0 at var(--x,50%) var(--y,50%))}to{clip-path:circle(160% at var(--x,50%) var(--y,50%))}}.ProblemCard_bar__90TS3{grid-area:bar;display:flex;align-items:center;gap:14px;padding:16px clamp(20px,2vw,32px) 0}.ProblemCard_close__6wApR{order:3;margin-left:auto;display:inline-flex;align-items:center;gap:8px;min-height:36px;padding:7px 14px;border:1px solid rgba(255,255,255,.3);border-radius:999px;background:transparent;color:#fff;font:inherit;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;cursor:pointer;transition:border-color .2s ease,background-color .2s ease}.ProblemCard_close__6wApR:hover{border-color:#fff;background:rgba(255,255,255,.06)}.ProblemCard_close__6wApR span{font-size:16px;line-height:1}.ProblemCard_count__xPA2e{order:2;font-size:12px;font-weight:700;letter-spacing:.08em;font-variant-numeric:tabular-nums;color:#6fe3e4}.ProblemCard_countOf__76mdR{color:rgba(255,255,255,.4)}.ProblemCard_nav__hMsw_{order:1;display:inline-flex;gap:6px}.ProblemCard_chev__JadPt{display:inline-grid;place-items:center;width:36px;height:36px;padding:0;border:1px solid rgba(255,255,255,.2);border-radius:50%;background:transparent;color:#fff;cursor:pointer;transition:border-color .2s ease,background-color .2s ease,transform .2s ease}.ProblemCard_chev__JadPt:hover{border-color:#fff;background:rgba(255,255,255,.06)}.ProblemCard_chev__JadPt:active{transform:scale(.94)}.ProblemCard_chev__JadPt svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.ProblemCard_chev__JadPt:focus-visible,.ProblemCard_close__6wApR:focus-visible,.ProblemCard_join__WXFyh:focus-visible,.ProblemCard_more__0cd2u:focus-visible{outline:2px solid #6fe3e4;outline-offset:2px}.ProblemCard_photoPanel__RAICA{grid-area:photo;position:relative;min-height:0;overflow:hidden;background:#111;isolation:isolate}.ProblemCard_photo__Zfzrb{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(1.1);animation:ProblemCard_settle__JRUf4 2.6s cubic-bezier(.2,.8,.2,1) both;will-change:transform}@keyframes ProblemCard_settle__JRUf4{to{transform:scale(1.01)}}.ProblemCard_shade__cdcf1{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,10,.3),rgba(10,10,10,0) 26%,rgba(10,10,10,.05) 55%,rgba(10,10,10,.82))}.ProblemCard_sample__nKCrC{display:inline-flex;align-items:center;gap:8px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.75)}.ProblemCard_sample__nKCrC:before{content:"";width:6px;height:6px;border-radius:50%;background:#6fe3e4}.ProblemCard_photoFoot__gAvja{position:absolute;left:18px;right:18px;bottom:18px;z-index:2;display:grid;gap:6px;animation:ProblemCard_rise__lyQNW .7s cubic-bezier(.2,.8,.2,1) .35s both}.ProblemCard_photoHeading__HF31o{font-family:var(--font-display);font-weight:var(--weight-medium);font-size:clamp(24px,18px + .9vw,34px);line-height:1;letter-spacing:-.03em;text-wrap:balance;text-shadow:0 2px 18px rgba(0,0,0,.45)}.ProblemCard_chapter__C0HSy{grid-area:chapter;min-height:0;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.2) transparent}.ProblemCard_chapterInner__fnMvq{padding:10px clamp(20px,2vw,32px) 22px;animation:ProblemCard_rise__lyQNW .6s cubic-bezier(.2,.8,.2,1) .3s both}@keyframes ProblemCard_rise__lyQNW{0%{opacity:0;transform:translateY(14px)}}.ProblemCard_title__VFJH5{margin:0;font-family:var(--font-display);font-weight:var(--weight-medium);font-size:clamp(26px,20px + .9vw,34px);line-height:1;letter-spacing:-.035em;text-wrap:balance}.ProblemCard_line__WLThn{margin:12px 0 0;max-width:48ch;font-size:15px;line-height:1.5;color:rgba(255,255,255,.78);text-wrap:pretty}.ProblemCard_device__Kx7XU{margin-top:20px;padding-top:14px;border-top:1px solid rgba(255,255,255,.1)}.ProblemCard_shows__4ijQo{display:flex;align-items:baseline;gap:8px;margin:0 0 14px;font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.6)}.ProblemCard_showsMark__msV_x{flex:none;width:6px;height:6px;border-radius:50%;background:#6fe3e4;translate:0 -1px}.ProblemCard_links__1WtTl{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin:18px 0 0;padding-top:14px;border-top:1px solid rgba(255,255,255,.1)}.ProblemCard_more__0cd2u{display:inline-flex;align-items:center;gap:8px;min-height:40px;font-size:14px;font-weight:var(--weight-medium);color:#6fe3e4;text-decoration:none;transition:gap .2s ease}.ProblemCard_more__0cd2u:hover{color:#6fe3e4;gap:12px}.ProblemCard_join__WXFyh{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;border:1px solid rgba(255,255,255,.3);color:#fff;font-size:13.5px;font-weight:var(--weight-medium);text-decoration:none;transition:border-color .2s ease,background-color .2s ease}.ProblemCard_join__WXFyh:hover{color:#fff;border-color:#05b7b9;background:rgba(5,183,185,.1)}.ProblemCard_sheet__wT1f3,.ProblemCard_sheet__wT1f3.ProblemCard_flip__mwNB6{position:fixed;inset:0;top:0;left:0;right:0;width:auto;height:auto;z-index:60;border-radius:0;border:0;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);grid-template-areas:"photo bar" "photo chapter"}@media (max-width:760px){.ProblemCard_card__IvdSS{display:block;overflow:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;background:#0a0a0a;will-change:auto}.ProblemCard_bar__90TS3{position:sticky;top:0;z-index:3;padding:calc(10px + env(safe-area-inset-top)) 16px 10px;gap:10px;background:linear-gradient(180deg,#0a0a0a 80%,rgba(10,10,10,0))}.ProblemCard_close__6wApR{order:1;margin-left:0;min-height:40px;background:#fff;color:#0a0a0a;border-color:#fff}.ProblemCard_count__xPA2e{order:2;margin-left:auto}.ProblemCard_nav__hMsw_{order:3;gap:8px}.ProblemCard_chev__JadPt{width:40px;height:40px}.ProblemCard_photoPanel__RAICA{height:42svh;min-height:250px;margin-top:-60px;padding-top:60px}.ProblemCard_photoFoot__gAvja{left:16px;right:16px;bottom:18px}.ProblemCard_photoHeading__HF31o{font-size:30px}.ProblemCard_chapter__C0HSy{overflow:visible}.ProblemCard_chapterInner__fnMvq{padding:20px 16px calc(32px + env(safe-area-inset-bottom))}.ProblemCard_title__VFJH5{font-size:clamp(26px,7vw,32px)}.ProblemCard_line__WLThn{font-size:15px}.ProblemCard_links__1WtTl{flex-direction:column;align-items:stretch;gap:10px}.ProblemCard_join__WXFyh,.ProblemCard_more__0cd2u{justify-content:center;min-height:46px}.ProblemCard_more__0cd2u{border-radius:999px;border:1px solid rgba(111,227,228,.5)}}@media (prefers-reduced-motion:reduce){.ProblemCard_card__IvdSS,.ProblemCard_chapterInner__fnMvq,.ProblemCard_photoFoot__gAvja{animation-name:ProblemCard_fadeIn__UAqfW}.ProblemCard_photo__Zfzrb{animation:none;transform:none}}@keyframes ProblemCard_fadeIn__UAqfW{0%{opacity:0}to{opacity:1}}