/* A playable poster and an open, indexed shelf — home page only. */
.room{--room-ink:var(--text);--room-cross:#258dbb;--room-nought:#ca704e;--room-line:#aabecb;--room-paper:#fbfcfa;overflow:clip}.room-hero{position:relative;text-align:center;padding-top:45px;padding-bottom:65px}.room-kicker,.room-section-no{font:10px/1.5 var(--font-copy);letter-spacing:1.7px;font-weight:550;color:var(--muted)}.room-kicker{display:flex;justify-content:center;align-items:center;gap:16px;margin-bottom:16px}.room-kicker span{color:var(--blue)}.room-hero h1{font-size:clamp(80px,11.4vw,150px);font-weight:550;letter-spacing:-.075em;line-height:1.05;margin:0;position:relative;z-index:1}.room-stage{height:322px;position:relative;max-width:960px;margin:19px auto 0;isolation:isolate}.room-stage:before{content:'';position:absolute;inset:15px 12%;background-image:radial-gradient(var(--room-line) .8px,transparent .8px);background-size:22px 22px;opacity:.3;mask-image:radial-gradient(ellipse,#000,transparent 68%);pointer-events:none}.room-play{position:absolute;top:15px;left:50%;width:260px;transform:translateX(-50%)}.room-board{display:grid;grid-template-columns:repeat(3,1fr);width:238px;height:238px;margin:auto;position:relative;transform:rotate(-7deg);filter:drop-shadow(0 9px 13px #26455f08)}.room-cell{border:0;border-right:2px solid var(--room-line);border-bottom:2px solid var(--room-line);background:transparent;position:relative;display:grid;place-items:center;min-width:0;padding:14px;aspect-ratio:1;transition:background .2s;color:var(--blue);border-radius:0}.room-cell:nth-child(3n){border-right:0}.room-cell:nth-child(n+7){border-bottom:0}.room-cell:not(.given):not(:disabled){cursor:pointer}.room-cell:not(.given):not(:disabled):hover{background:var(--blue-soft)}.room-cell:disabled{opacity:1}.room-cell:focus-visible{outline-offset:-6px;border-radius:7px}.room-vacancy{font:20px var(--font-copy);color:var(--faint);opacity:.36}.room-mark{position:relative;display:block;width:100%;height:100%;min-height:36px;animation:room-stamp .65s cubic-bezier(.2,.8,.2,1) both}.room-cell:nth-child(2) .room-mark{animation-delay:.15s}.room-cell:nth-child(4) .room-mark{animation-delay:.3s}.room-cell:nth-child(6) .room-mark{animation-delay:.45s}.room-mark.x:before,.room-mark.x:after{content:'';position:absolute;left:43%;top:0;width:15%;height:100%;background:var(--room-cross);border-radius:4px;transform:rotate(45deg)}.room-mark.x:after{transform:rotate(-45deg)}.room-mark.o{border:7px solid var(--room-nought);border-radius:50%;width:83%;height:83%;min-height:0}.room-board.is-solved:after{content:'';position:absolute;top:16.65%;left:3%;width:94%;height:4px;background:var(--room-cross);border-radius:4px;transform:scaleX(0);transform-origin:left;animation:room-line .55s .15s ease forwards;pointer-events:none}.room-board.is-solved .room-cell:nth-child(-n+3){background:color-mix(in srgb,var(--blue-soft) 65%,transparent)}.room-feedback{margin:21px -55px 0;min-height:45px}.room-feedback p{font-size:12px;line-height:1.5;margin:0}.room-reset{border:0;background:transparent;color:var(--blue);font-size:11px;cursor:pointer;padding:7px 15px;min-height:36px}.room-piece{position:absolute;display:flex;flex-direction:column;align-items:center;gap:8px;z-index:2;animation:room-arrive .9s cubic-bezier(.2,.8,.2,1) both}.room-piece>.icon{width:96px;height:96px;filter:drop-shadow(0 8px 1px #1b46600b);transition:transform .35s}.room-piece:hover>.icon{transform:rotate(8deg) translateY(-7px)}.room-piece>span{font-size:12px;display:flex;align-items:center;gap:10px;min-height:44px;color:var(--muted)}.room-piece b{font-size:13px;font-weight:400;color:var(--blue)}.piece-chess{top:0;left:10%;transform:rotate(-13deg);animation-delay:.15s}.piece-minesweeper{right:5%;top:23px;transform:rotate(10deg);animation-delay:.28s}.piece-mancala{left:20%;bottom:-5px;transform:rotate(8deg);animation-delay:.4s}.piece-mancala>.icon{width:77px;height:77px}.room-coordinates{position:absolute;right:14%;bottom:4px;color:var(--faint);font:11px/2 ui-monospace,monospace;letter-spacing:2px;transform:rotate(-8deg)}.room-invitation{display:flex;flex-direction:column;align-items:center;position:relative;z-index:3}.room-invitation>p{font-size:15px;line-height:1.65;margin:12px 0 20px}.room-enter{display:inline-flex;align-items:center;justify-content:center;gap:35px;min-height:56px;padding:16px 24px 16px 27px;border-radius:100px;background:var(--blue);color:white;font-size:14px;font-weight:600;transition:gap .25s,background .2s}.room-enter:hover{gap:48px;background:var(--blue-hover)}[data-theme=dark] .room-enter{color:#0e2432}.room-scroll{font-size:11px;color:var(--muted);display:flex;gap:17px;align-items:center;min-height:44px;margin-top:9px}.room-scroll:hover{color:var(--blue)}.room-scroll>span{font-size:20px;line-height:1}.room-catalog{border-top:1px solid var(--line);padding:58px 0 0}.room-section-head{display:grid;grid-template-columns:1fr 1.15fr;column-gap:50px;align-items:end;margin-bottom:42px}.room-section-no{grid-column:1/-1;margin-bottom:22px}.room-section-head h2,.room-reading-head h2{font-size:clamp(36px,4.4vw,56px);font-weight:500;line-height:1.2;letter-spacing:-.065em;margin:0}.room-catalog-note{font-size:14px;line-height:1.8;margin:0 0 4px;color:var(--muted)}.room-shelves{display:grid;grid-template-columns:1fr 1fr;gap:60px}.room-shelf>header{padding-bottom:21px;border-bottom:1px solid var(--line)}.room-shelf h3{font-size:18px;margin-bottom:4px;font-weight:550}.room-shelf>header p{font-size:12px;margin:0}.room-shelf ol{list-style:none;padding:0;margin:0}.shelf-game{display:grid;grid-template-columns:20px 43px 1fr 20px;gap:16px;min-height:100px;align-items:center;border-bottom:1px solid var(--line);padding:17px 0;position:relative;transition:color .2s}.shelf-index{font:10px ui-monospace,monospace;color:var(--faint)}.shelf-game>.icon{width:40px;height:40px;transition:transform .25s}.shelf-copy{min-width:0}.shelf-copy strong{display:block;font-size:20px;letter-spacing:-.6px;font-weight:550;line-height:1.3;transition:color .2s}.shelf-copy small{font-size:11px;color:var(--muted);display:block;margin-top:5px;line-height:1.6}.shelf-arrow{font-size:21px;font-weight:300;color:var(--faint);transition:transform .25s,color .25s}.shelf-game:hover .shelf-arrow{transform:translate(3px,-3px);color:var(--blue)}.shelf-game:hover strong{color:var(--blue)}.shelf-game:hover>.icon{transform:rotate(-9deg)}.room-catalog-foot{display:flex;justify-content:space-between;align-items:center;gap:25px;padding-top:24px}.room-catalog-foot p{font-size:11px;margin:0}.room-catalog-foot>a{font-size:13px;min-height:44px;display:flex;align-items:center;gap:25px;color:var(--blue)}.room-reading{padding:90px 0 80px}.room-reading-head{position:relative;margin-bottom:36px;display:grid;grid-template-columns:1fr auto;align-items:end;gap:0 35px}.room-reading-head h2{font-size:clamp(33px,3.6vw,48px)}.room-reading-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px}.room-feature-photo{position:relative;overflow:hidden;border-radius:8px;aspect-ratio:1.4;background:var(--blue-soft)}.room-feature-photo>img{width:100%;height:100%;object-fit:cover;transition:transform .6s}.room-feature a:hover img{transform:scale(1.035)}.room-photo-label{position:absolute;left:18px;bottom:16px;font:10px ui-monospace,monospace;letter-spacing:1px;color:#fff;background:#102433c9;padding:7px 11px;border-radius:4px}.room-feature h3{font-size:26px;font-weight:550;line-height:1.3;margin:22px 0 10px;display:flex;justify-content:space-between;gap:20px}.room-feature h3>span{font-size:22px;color:var(--blue)}.room-feature p{font-size:13px;line-height:1.8;max-width:90%;margin-bottom:16px}.room-feature>.photo-credit{font-size:9px;line-height:1.8;display:block;max-width:95%}.room-notes{padding:0;margin:0;list-style:none}.room-notes li{border-top:1px solid var(--line)}.room-notes li:last-child{border-bottom:1px solid var(--line)}.room-notes a{display:grid;grid-template-columns:18px 1fr 16px;gap:17px;padding:25px 0;min-height:125px}.note-index{font:10px ui-monospace,monospace;color:var(--faint);padding-top:5px}.room-notes h3{font-size:21px;line-height:1.35;font-weight:550;margin-bottom:9px}.room-notes p{font-size:11px;line-height:1.8;margin:0}.room-notes a>span:last-child{color:var(--blue)}.room-notes a:hover h3{color:var(--blue)}.is-home .footer{border-top:1px solid var(--line)}.room-miss{animation:room-shake .35s ease}
[data-theme=dark] .room{--room-cross:#63bde3;--room-nought:#e09a77;--room-line:#496170;--room-paper:#18252f}[data-theme=dark] .room-piece>.icon{filter:drop-shadow(0 8px 12px #0002)}
@keyframes room-stamp{from{opacity:0;transform:scale(.65) rotate(-12deg)}to{opacity:1;transform:scale(1) rotate(0)}}@keyframes room-arrive{from{opacity:0;translate:0 25px}to{opacity:1;translate:0 0}}@keyframes room-line{to{transform:scaleX(1)}}@keyframes room-shake{25%{translate:-4px 0}75%{translate:4px 0}}
@media(max-width:1050px){.room-shelves,.room-reading-grid{gap:35px}.shelf-game{gap:12px;grid-template-columns:17px 34px 1fr 16px}.shelf-game>.icon{width:32px;height:32px}.shelf-copy strong{font-size:18px}.shelf-copy small{font-size:10px}.room-reading-grid{gap:35px}.room-notes a{padding:20px 0;gap:12px}.room-notes h3{font-size:19px}.room-feature h3{font-size:24px}}
@media(max-width:760px){.room-hero{padding-top:42px;padding-bottom:48px}.room-stage{height:296px;margin-top:23px}.room-board{width:210px;height:210px}.room-play{width:230px}.room-cell{padding:13px}.room-mark.o{border-width:6px}.room-piece>.icon{width:73px;height:73px}.piece-chess{left:5%;top:10px}.piece-minesweeper{right:2%;top:30px}.piece-mancala{left:11%;bottom:13px}.piece-mancala>.icon{width:60px;height:60px}.room-coordinates{right:9%;bottom:12px}.room-piece>span{font-size:10px;gap:6px}.room-feedback{margin-top:20px}.room-feedback p{font-size:11px}.room-invitation>p{font-size:14px}.room-shelves{gap:28px}.shelf-game{grid-template-columns:14px 28px 1fr 13px;gap:9px}.shelf-game>.icon{width:27px;height:27px}.shelf-copy strong{font-size:16px}.shelf-copy small{font-size:10px}.room-catalog-note{font-size:12px}.room-catalog{padding-top:40px}.room-reading{padding-top:65px}.room-reading-grid{gap:28px}.room-notes p{display:none}.room-notes h3{font-size:18px}.room-notes a{min-height:110px;padding:23px 0}.room-feature h3{font-size:21px}}
@media(max-width:600px){.room-hero{padding-top:33px;padding-bottom:36px}.room-kicker{font-size:8px;letter-spacing:1px;gap:10px;margin-bottom:19px}.room-hero h1{font-size:11.5vw;letter-spacing:-.07em;white-space:nowrap;line-height:1.1}.room-stage{height:282px;margin-top:21px;max-width:420px}.room-play{width:190px;top:23px}.room-board{width:174px;height:174px}.room-cell{padding:11px;border-width:1.5px}.room-mark{min-height:29px}.room-mark.o{border-width:5px;min-height:0}.room-vacancy{font-size:16px}.room-feedback{margin:24px -45px 0;min-height:59px}.room-feedback p{font-size:10px;max-width:240px;margin:auto}.room-reset{font-size:10px;min-height:44px}.room-piece>.icon{width:54px;height:54px}.room-piece>span{font-size:9px;gap:4px;min-height:44px}.piece-chess{left:1%;top:0}.piece-minesweeper{right:-1%;top:82px}.piece-mancala{left:1%;bottom:0}.piece-mancala>.icon{width:51px;height:51px}.room-coordinates{right:4%;bottom:2px;font-size:8px;letter-spacing:1px}.room-invitation>p{font-size:13px;line-height:1.8;margin-top:7px;margin-bottom:17px}.room-enter{font-size:13px;min-height:52px;padding:14px 22px 14px 25px;gap:31px}.room-scroll{font-size:10px;margin-top:5px}.room-catalog{padding-top:33px}.room-section-head{grid-template-columns:1fr;gap:0;margin-bottom:30px}.room-section-no{font-size:8px;letter-spacing:1.1px;margin-bottom:18px}.room-section-head h2{font-size:37px}.room-catalog-note{font-size:12px;margin:19px 0 0}.room-shelves{grid-template-columns:1fr;gap:35px}.room-shelf h3{font-size:17px}.room-shelf>header p{font-size:11px}.room-shelf>header{padding-bottom:15px}.shelf-game{min-height:87px;grid-template-columns:18px 38px 1fr 18px;gap:13px;padding:16px 0}.shelf-game>.icon{width:35px;height:35px}.shelf-copy strong{font-size:19px}.shelf-copy small{font-size:11px;margin-top:3px}.shelf-index{font-size:9px}.room-catalog-foot{align-items:start;flex-direction:column;gap:6px;padding-top:19px}.room-catalog-foot p{font-size:10px;line-height:1.8}.room-catalog-foot>a{font-size:12px}.room-reading{padding:48px 0 45px}.room-reading-head{grid-template-columns:1fr;gap:0;margin-bottom:22px}.room-reading-head h2{font-size:31px}.room-reading-head>.text-link{font-size:12px;margin-top:14px}.room-reading-grid{grid-template-columns:1fr;gap:30px}.room-feature-photo{aspect-ratio:1.35}.room-feature h3{font-size:24px;margin-top:18px}.room-feature p{font-size:12px;max-width:95%}.room-feature>.photo-credit{font-size:8px}.room-notes a{padding:21px 0;grid-template-columns:17px 1fr 15px;gap:14px;min-height:100px}.room-notes h3{font-size:20px}.room-notes p{display:block;font-size:11px}.room-feature h3>span{padding-top:4px}.room-photo-label{font-size:9px;left:13px;bottom:12px}}
@media(max-width:360px){.room-stage{height:276px}.room-play{width:172px;top:26px}.room-board{width:153px;height:153px}.room-cell{padding:9px}.room-mark{min-height:27px}.room-mark.o{min-height:0}.room-piece>.icon{width:44px;height:44px}.room-piece>span{font-size:8px;gap:2px}.piece-chess{left:-1%;top:3px}.piece-minesweeper{right:-2%;top:84px}.piece-mancala{left:2%;bottom:9px}.piece-mancala>.icon{width:43px;height:43px}.room-feedback{margin-top:22px}.room-feedback p{max-width:200px}.room-coordinates{right:0;bottom:7px}.shelf-game{gap:10px;grid-template-columns:15px 32px 1fr 15px}.shelf-game>.icon{width:30px;height:30px}.shelf-copy strong{font-size:17px}.shelf-copy small{font-size:10px}.room-section-head h2{font-size:34px}}
@media(prefers-reduced-motion:reduce){.room *,.room *:before,.room *:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.room-board.is-solved:after{transform:scaleX(1)}}
/* On the narrowest screens, sticker hit areas must stay outside the board. */
@media(max-width:360px){.room-piece{width:44px;height:44px}.room-piece>span{position:absolute;width:1px;height:1px;padding:0;min-height:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.piece-chess{left:-6px;top:4px}.piece-minesweeper{right:-4px;top:86px}.piece-mancala{left:3%;bottom:18px}}