:root{color-scheme:light;--bg: #FEFDF9;--ink: #111111;--muted: #8A8D96;--line: #DCDDE0;--card: #FFFFFF;--empty: #ECEEF3;--plate: #F3F4F8;--solid: #5E6BD4;--accent: #FF6200;--tint: #FFF1E4;--teal: #00AAA5;--teal-deep: #038F9D;--teal-mint: #B5E0E0;--teal-pale: #D0F4ED;--zig: #14BFB4;--sun: #FDD096;--peach: #FED5AB;--lav: #CDCAE9;--lav-soft: #DEDFF7;--blob-orange: #FEB777;--blob-gray: #E9EAEE}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--ink)}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;padding:env(safe-area-inset-top) 0 env(safe-area-inset-bottom);overflow-x:hidden}button{font:inherit;color:inherit;cursor:pointer}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}#app{max-width:480px;min-height:100dvh;margin:0 auto;position:relative;background:var(--bg)}.screen{display:flex;flex-direction:column;min-height:100dvh;padding:18px 18px 24px;gap:16px}@media(min-width:700px){html{background:#e9e7e1}body{display:grid;place-items:center;min-height:100vh}#app{width:390px;min-height:0;height:min(844px,calc(100vh - 32px));overflow-y:auto;border-radius:32px;border:1px solid var(--line)}.screen{min-height:100%}}h1{margin:0;font-size:40px;line-height:1.05;font-weight:800;letter-spacing:-.02em}.top{display:flex;align-items:center;justify-content:space-between;min-height:44px}.top h1{font-size:30px}h1.sub{font-size:32px;margin-top:-8px}.tutorial h1.sub{margin-top:0}.ibtn{width:44px;height:44px;border:0;background:none;display:grid;place-items:center;padding:0;border-radius:50%}.ibtn svg,.nav svg{fill:none;stroke:var(--ink);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.ibtn svg{width:26px;height:26px}.link{background:none;border:0;padding:10px 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16px}@media(min-width:700px){.splash{min-height:100%}}.blob{position:absolute;border-radius:50%;pointer-events:none}.blob.a{width:260px;height:260px;left:-90px;top:-110px;background:var(--lav-soft)}.blob.b{width:200px;height:200px;right:-90px;top:-90px;border:1.5px solid var(--blob-orange)}.blob.c{width:300px;height:300px;left:-120px;bottom:-150px;background:var(--blob-orange)}.blob.d{width:210px;height:210px;right:-90px;bottom:-80px;background:var(--blob-gray)}.splash .board{position:relative;width:100%;max-width:350px;pointer-events:none}.splash .tap{position:absolute;left:0;right:0;bottom:34px;text-align:center;font-size:18px;font-weight:700;color:#3a3a40;animation:pulse 2.4s ease-in-out infinite}@keyframes pulse{50%{opacity:.35}}@media(prefers-reduced-motion:reduce){.splash .tap{animation:none}}.board{--n: 6;display:grid;grid-template-columns:26px repeat(var(--n),minmax(0,1fr)) 26px;gap:6px 5px;width:100%;margin:0 auto;touch-action:manipulation}.clue{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:36px;padding:0;border:0;border-radius:10px;background:none;font-size:21px;font-weight:800;line-height:1}.clue svg{width:14px;height:5px;margin-top:3px;stroke:var(--zig);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.clue.ok{color:var(--teal)}.clue.sel{background:var(--tint)}.static .clue{cursor:default}.cell{position:relative;aspect-ratio:1;padding:0;border:0;background:none;display:grid;place-items:center;border-radius:14px;max-height:64px}.cell .dot{width:84%;height:84%;border-radius:50%;background:var(--empty)}.cell .dot.s{background:var(--solid)}.cell .dot.h{background:var(--bg);border:5px solid var(--accent)}.cell.given{background:var(--plate)}.cell.hl{background:var(--tint)}.cell.given.hl{background:#ffe6d0}.cell.hint{outline:3px solid var(--accent);outline-offset:-2px}.cell.wrong{outline:3px dashed var(--accent);outline-offset:-2px}.cell.bar-h:after,.cell.bar-v:after{content:"";position:absolute;background:var(--accent);border-radius:2px;z-index:1}.cell.bar-h:after{right:-4px;top:24%;bottom:24%;width:3px}.cell.bar-v:after{bottom:-5px;left:24%;right:24%;height:3px}.board.static .cell{pointer-events:none}.legend{display:flex;justify-content:space-around;color:var(--muted);font-size:15px;padding:4px 8px}.legend span{display:flex;flex-direction:column;align-items:center;gap:8px}.legend i{width:44px;height:44px;border-radius:50%;display:block}.legend .s{background:var(--solid)}.legend .h{border:6px solid var(--accent)}.legend .e{background:var(--empty)}.hub{gap:0;padding-bottom:0}.today{position:relative;overflow:hidden;display:block;width:100%;text-align:left;border:1px solid var(--line);border-radius:22px;background:var(--card);padding:16px 18px 18px}.today b.t{display:block;font-size:18px;font-weight:700}.today 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.unit{display:block;font-size:24px;font-weight:800;color:var(--teal-deep);margin-top:2px}.ach .scene{position:absolute;right:-18px;top:-20px;width:210px;height:160px;pointer-events:none}.ach .badges{display:flex;justify-content:space-around;padding:16px 0 6px;border-top:1px solid var(--line);margin-top:0}.badge{width:30%;text-align:center;font-size:14px;font-weight:700;line-height:1.25}.badge .o{width:58px;height:58px;border-radius:50%;margin:0 auto 8px;display:grid;place-items:center;border:2.5px solid var(--teal)}.badge .o svg{width:28px;height:28px;fill:var(--teal)}.badge.off{color:var(--muted)}.badge.off .o{border-color:#d3d5db}.badge.off .o svg{fill:#d3d5db}.ach .foot{display:flex;justify-content:flex-end;align-items:center;gap:6px;font-weight:800;font-size:17px;margin-top:4px}.ach .foot svg{width:26px;height:10px;stroke:var(--zig);fill:none;stroke-width:2.2;stroke-linecap:round}.prose{display:flex;flex-direction:column;gap:14px}.prose p{margin:0;font-size:17px;line-height:1.45}.prose h2{margin:6px 0 0;font-size:20px}.prose ol{margin:0;padding-left:22px;font-size:16px;line-height:1.5}.ex{display:flex;align-items:center;gap:10px}.ex .board{max-width:240px;grid-template-columns:20px repeat(4,minmax(0,1fr));gap:5px;margin:0}.field{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-top:1px solid var(--line);font-size:17px}.field:first-child{border-top:0}.seg{display:flex;border:2px solid var(--ink);border-radius:12px;overflow:hidden}.seg button{background:none;border:0;padding:8px 16px;font-weight:800}.seg button.on{background:var(--ink);color:var(--bg)}.steps{display:flex;justify-content:center;gap:8px}.steps i{width:10px;height:10px;border-radius:50%;background:var(--empty)}.steps i.on{background:var(--accent)}.tutorial .board{max-width:320px;grid-template-columns:26px repeat(4,minmax(0,1fr))}