:root{color-scheme:light;--ink:#17304f;--muted:#49657b;--teal:#007b80;--sky:#eef7fb;--line:#c7dce5;--coral:#ae3c27;--white:#fff;font-family:"Avenir Next",Avenir,"Segoe UI",sans-serif;color:var(--ink);background:var(--sky);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,select{color:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;min-height:44px;border:1px solid var(--line);border-radius:10px;background:var(--white);padding:9px 15px;font-weight:650;touch-action:manipulation;transition:background .14s,transform .14s,border-color .14s}button:hover:not(:disabled){background:#e3f1f4;border-color:var(--teal)}button:active:not(:disabled){transform:translateY(1px)}button:disabled{cursor:default;color:#748493;background:#f4f7f9}button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:white}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:var(--teal)}:focus-visible{outline:3px solid var(--coral);outline-offset:3px}[hidden]{display:none!important}.skip{position:absolute;left:16px;top:-70px;padding:12px;background:white;z-index:10}.skip:focus{top:12px}.site-header,main,footer{width:min(1040px,calc(100% - 40px));margin:auto}.site-header{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:28px 0 22px}.site-header>a:last-child{font-size:14px;padding:12px 0}.wordmark{font-size:23px;font-weight:750;letter-spacing:-1.1px;display:flex;align-items:center;gap:10px;text-decoration:none}.heading{display:flex;align-items:center;justify-content:space-between;margin:24px 0 28px}.heading h1{font-size:clamp(30px,4.8vw,50px);letter-spacing:-2px;line-height:1.1;margin:0 0 10px;font-weight:650}.heading p{margin:0;color:var(--muted);line-height:1.6}.sky-motif{font-size:64px;color:#bedfe7;letter-spacing:-8px;line-height:1}.game-controls{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:0 0 18px}.mode-switch{display:flex;gap:5px}.mode-switch button{border-radius:24px;min-width:93px}.size-control{font-size:14px;display:flex;gap:10px;align-items:center}.size-control select{background:white;border:1px solid var(--line);border-radius:10px;min-height:44px;padding:8px 12px;font-size:16px}.game-layout{display:grid;grid-template-columns:minmax(0,1.17fr) minmax(270px,1fr);gap:36px;align-items:start}.board-column{min-width:0}.board-meta{display:flex;justify-content:space-between;gap:8px;font-size:13px;color:var(--muted);padding:0 4px 12px}.board-frame{background:white;padding:18px;border:1px solid #bdd4df;border-radius:18px;box-shadow:0 14px 35px #224b7010}.board{--size:4;display:grid;grid-template-columns:26px repeat(var(--size),minmax(0,1fr)) 26px;grid-template-rows:26px repeat(var(--size),minmax(0,1fr)) 26px;gap:5px;aspect-ratio:1}.clue{font-weight:750;color:var(--muted);display:flex;justify-content:center;align-items:center;gap:2px;font-size:17px;border-radius:5px;position:relative}.clue.top,.clue.bottom{flex-direction:column;gap:0;line-height:1}.clue.bottom .clue-arrow{order:-1}.clue.left .clue-arrow{order:1}.clue.right .clue-arrow{order:-1}.clue-arrow{font-size:11px;color:#526a7c}.clue-selected{background:#d3edf0;color:#00575c}.clue-wrong{outline:2px dashed var(--coral);color:var(--coral)}.clue-done{color:var(--teal)}.cell{border:1px solid #d3e1e6;border-radius:7px;padding:0;min-width:0;min-height:44px;font-size:clamp(22px,3vw,32px);font-weight:500;position:relative;font-variant-numeric:tabular-nums;background:#fff}.cell.related{background:#f2fafb}.cell.given{color:#17304f;font-weight:750;background:#e7edf2}.cell.given .given-dot{display:block;width:4px;height:4px;border-radius:50%;background:#667f91;position:absolute;bottom:6px;left:calc(50% - 2px)}.cell[aria-pressed=true]{border-color:var(--teal);color:var(--teal);box-shadow:inset 0 0 0 2px var(--teal);background:#e1f4f4}.cell.conflict{color:var(--coral);border-style:dashed;border-color:var(--coral)}.error-mark{display:none;position:absolute;right:4px;top:1px;font-size:11px}.conflict .error-mark{display:block}.cell.hinted{animation:reveal .5s}.selection{margin:16px 0 10px;font-size:13px;color:var(--muted);text-align:center}.entry-controls{display:flex;gap:10px;align-items:stretch}.number-pad{display:flex;gap:7px;flex:1}.height-key{flex:1;min-width:0;padding:8px 0;font-size:23px;border-color:#8ebdc8;box-shadow:0 3px 0 #c6dde6}.erase{font-size:13px;padding-inline:13px}.actions{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:18px}.actions button{font-size:14px;padding:8px 15px;background:transparent}.conflicts{padding:12px 14px;background:#ffebe4;color:#842d20;border-left:3px solid var(--coral);font-size:14px;line-height:1.5}.feedback{font-size:13px;color:var(--muted);min-height:24px;line-height:1.5;margin:12px 0 0;text-align:center}.finish{margin:18px 0;padding:20px 22px;border-radius:12px;background:#d9eeeb;border:1px solid #90c6bb}.finish h2{font-size:24px;letter-spacing:-.6px;margin:0 0 6px}.finish p{font-size:14px;line-height:1.5}.finish button{color:white;background:var(--teal);border-color:var(--teal)}.view-column{padding:22px 26px;border-top:2px solid #75aebc;background:linear-gradient(180deg,#deeff6,transparent 62%);border-radius:0 0 18px 18px;margin-top:28px}.view-heading{display:flex;justify-content:space-between;align-items:center}.view-heading h2{font-size:24px;letter-spacing:-.8px;margin:0}.view-heading span{font-size:30px;color:var(--teal)}.view-intro{font-size:14px;line-height:1.6;color:var(--muted);margin:10px 0 18px}.view-controls{display:grid;grid-template-columns:1fr 1fr;gap:6px}.view-controls button{font-size:13px;padding:7px 10px}.view-column h3{font-size:13px;font-weight:650;color:var(--muted);margin:24px 0 14px}.skyline-scene{display:flex;gap:7px;align-items:center;border-bottom:2px solid #86a5b8;padding-top:12px}.view-eye{font-size:26px;color:var(--teal)}.skyline-bars{display:flex;flex:1;align-items:end;gap:6px;height:142px;padding-bottom:23px}.sky-building{--height:0;height:calc(24px + var(--height)*95px);background:var(--teal);color:white;position:relative;flex:1;text-align:center;border-radius:3px 3px 0 0;border:1px solid #006166;min-width:0;transition:height .22s}.sky-height{display:block;margin-top:6px;font-weight:700;font-size:19px}.sky-status{position:absolute;top:calc(100% + 5px);left:-4px;right:-4px;color:var(--muted);font-size:9px}.sky-building.hidden-building{background:#a9c2ce;border:1px dashed #547385;color:var(--ink)}.sky-building.empty{background:transparent;border:1px dashed #8bacbc;color:var(--muted);height:27px}.sky-building.empty .sky-height{margin-top:0}.view-count{font-size:13px;font-weight:650;color:var(--teal);margin:12px 0 28px}.quick-rules{border-top:1px solid #bfd5df;padding-top:22px}.quick-rules h2{font-size:18px;margin:0}.quick-rules ol{padding-left:20px;font-size:14px;line-height:1.7;color:var(--muted);margin:12px 0}.quick-rules p{font-size:14px;line-height:1.65;color:var(--muted)}.quick-rules a{font-size:14px;font-weight:650;display:inline-block;padding:9px 0}.notice{padding:18px 20px;background:#fff6e9;border:1px solid #d9c39e;border-radius:12px;line-height:1.5;margin:0 0 20px;font-size:14px}.new-day{display:flex;align-items:center;justify-content:space-between;gap:16px}.new-day p{margin:0}.storage-notice{margin-top:22px}.storage-notice pre{font-size:12px;white-space:pre-wrap;overflow-wrap:anywhere}summary{cursor:pointer;padding:12px 0;min-height:44px}.library-note{font-size:12px;color:var(--muted);text-align:center;line-height:1.6;margin:30px 0 20px}footer{padding:22px 0 36px;display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}footer nav{display:flex;gap:24px}footer a{padding:12px 0;display:inline-block}dialog{border:1px solid var(--line);border-radius:18px;padding:26px;max-width:min(440px,calc(100vw - 28px));color:var(--ink);box-shadow:0 18px 70px #17304f44}dialog::backdrop{background:#17304f70}dialog h2{font-size:24px;margin:0 0 14px;letter-spacing:-.5px}dialog p{font-size:15px;line-height:1.6}.dialog-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap;margin-top:24px}.dialog-actions button:last-child{background:var(--ink);color:white}.guide{max-width:780px;margin:36px auto 64px}.guide h1{font-size:clamp(30px,5vw,46px);letter-spacing:-1.6px;line-height:1.1;margin:0 0 24px}.guide h2{font-size:25px;letter-spacing:-.6px;margin:36px 0 16px}.guide p,.guide li{line-height:1.75;color:var(--muted)}.guide ol,.guide ul{padding-left:22px}.guide .play-link{display:inline-block;padding:12px 22px;min-height:44px;background:var(--teal);border-radius:24px;color:white;text-decoration:none;font-weight:650}.example{margin:28px 0;padding:24px;background:white;border:1px solid var(--line);border-radius:14px}.example svg{width:100%;height:auto;display:block}.example figcaption{font-size:14px;line-height:1.7;color:var(--muted);margin-top:18px}.guide dl{margin:0}.guide dt{font-weight:700;margin-top:20px}.guide dd{margin:5px 0 0;color:var(--muted);line-height:1.65}@keyframes reveal{50%{box-shadow:inset 0 0 0 4px #e8b56b}}
@media(max-width:760px){.game-layout{grid-template-columns:minmax(0,1fr);gap:22px}.board-column{width:100%;max-width:510px;margin:auto}.view-column{margin:0 auto;width:100%;max-width:510px}.skyline-bars{height:142px}.sky-motif{display:none}.site-header,main,footer{max-width:590px}.heading{margin-top:18px}.view-controls{grid-template-columns:repeat(4,minmax(0,1fr))}.view-controls button{padding-inline:5px}.new-day{align-items:flex-start;flex-direction:column}}
@media(max-width:380px){.site-header,main,footer{width:calc(100% - 28px)}.site-header{padding:18px 0}.wordmark{font-size:21px}.wordmark svg{width:25px}.site-header>a:last-child{font-size:13px}.heading{margin:18px 0 24px}.heading h1{font-size:30px;letter-spacing:-1.2px}.heading p{font-size:14px}.game-controls{gap:8px}.mode-switch{gap:4px}.mode-switch button{min-width:73px;padding:8px 12px;font-size:14px}.size-control{gap:6px}.size-control select{padding:8px 6px}.board-frame{padding:10px;border-radius:12px}.board{grid-template-columns:18px repeat(var(--size),minmax(0,1fr)) 18px;grid-template-rows:18px repeat(var(--size),minmax(0,1fr)) 18px;gap:2px}.clue{font-size:13px;gap:0}.clue-arrow{font-size:8px}.clue.top,.clue.bottom{line-height:.8}.cell{border-radius:4px;font-size:24px}.entry-controls{gap:7px}.number-pad{gap:5px}.height-key{font-size:22px}.erase{padding:8px;font-size:12px}.actions{gap:5px}.actions button{padding:8px 12px}.view-column{padding:20px 14px}.view-heading h2{font-size:22px}.view-controls{gap:4px}.view-controls button{font-size:12px}.library-note{text-align:left}.guide{margin-top:28px}.example{padding:14px}footer nav{gap:15px}dialog{padding:21px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}