:root{color-scheme:light;--ink:#183b2b;--muted:#547063;--paper:#edf4ef;--fern:#a1d58b;--fern-ink:#255333;--iris:#c2a2e2;--iris-ink:#4a2e68;--line:#c2d5c8;--white:#fbfffc;font-family:ui-rounded,"Avenir Next",Avenir,system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;touch-action:manipulation}a{color:inherit;text-underline-offset:4px}button:disabled{cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #6a3b91;outline-offset:4px}[hidden]{display:none!important}.skip{position:fixed;top:-60px;left:16px;z-index:10;background:var(--ink);color:white;padding:12px}.skip:focus{top:10px}.site-header,main,footer{width:min(1060px,calc(100% - 64px));margin:auto}.site-header{height:105px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.site-header>a:last-child{font-size:14px;font-weight:600;text-decoration:none;padding:14px 0}.site-header>a:last-child span{margin-left:13px}.wordmark{font-size:24px;font-weight:800;letter-spacing:-1px;display:flex;gap:9px;align-items:center;text-decoration:none}.wordmark svg{width:35px;fill:var(--ink)}.wordmark .stem{fill:none;stroke:var(--paper);stroke-width:2.5;stroke-linecap:round}.game-layout{display:grid;grid-template-columns:minmax(245px,1fr) minmax(0,520px);gap:64px;padding:54px 0 12px;align-items:start}.intro{padding-top:18px}h1{font-size:clamp(40px,5vw,61px);letter-spacing:-3.6px;line-height:1;font-weight:850;margin:0 0 23px}h1>span{color:#6b994a}.lead{font-size:21px;line-height:1.4;letter-spacing:-.4px;margin:0 0 30px}.mode-switch{display:inline-flex;border:1px solid var(--ink);padding:3px;border-radius:10px;gap:3px}.mode-switch button{min-height:40px;border:0;background:transparent;border-radius:7px;padding:8px 22px;font-size:14px;font-weight:650;color:var(--ink)}.mode-switch button[aria-pressed=true]{background:var(--ink);color:var(--white)}.edition{font-size:12px;color:var(--muted);margin:11px 0 32px}.counters{display:flex;gap:36px}.counters>div{display:flex;flex-direction:column}.counters strong{font-size:56px;line-height:1;font-weight:450;letter-spacing:-2px;font-variant-numeric:tabular-nums}.counters>div+div strong{color:#6b8776}.counters span{font-size:13px;margin-top:6px}.legend{display:flex;gap:18px;margin:31px 0 16px;font-size:12px;color:var(--muted)}.legend span{display:flex;align-items:center;gap:6px}.legend-leaf{display:inline-block;width:14px;height:14px;background:var(--fern-ink);border-radius:70% 5% 70% 5%;transform:rotate(-12deg)}.legend-seed{color:var(--iris-ink);font-style:normal;font-size:17px}.new-board{border:0;border-bottom:1px solid var(--line);padding:14px 0;background:transparent;font-size:13px;color:var(--ink)}.new-board span{margin-left:15px}.board-frame{background:#d5e6d8;padding:12px;border-radius:26px 26px 6px 26px;box-shadow:0 20px 44px #2b52380d}.board{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;aspect-ratio:1;background-image:radial-gradient(#a5c2af 1.3px,transparent 1.3px);background-size:18px 18px;border-radius:16px}.tile{position:relative;width:100%;aspect-ratio:1;padding:0;border:2px solid #567d49;background:var(--fern);border-radius:14px 14px 4px 14px;box-shadow:0 3px 0 #67925430;display:grid;place-items:center;transition:transform .16s,box-shadow .16s,border-color .16s;user-select:none}.tile[data-color="1"]{background:var(--iris);border-color:#795a99;border-radius:14px 14px 14px 4px;box-shadow:0 3px 0 #69517f25}.tile[data-color="-1"]{visibility:hidden;pointer-events:none}.tile .leaf{width:48%;fill:var(--fern-ink);transform:rotate(-8deg)}.tile .vein{fill:none;stroke:var(--fern);stroke-width:2.3;stroke-linecap:round}.tile .seed{display:none;color:var(--iris-ink);font-size:clamp(28px,4vw,48px);line-height:1}.tile[data-color="1"] .leaf{display:none}.tile[data-color="1"] .seed{display:block}.tile-letter{position:absolute;right:9px;bottom:7px;font-size:11px;font-weight:700;color:var(--fern-ink)}.tile[data-color="0"] .tile-letter:after{content:"A"}.tile[data-color="1"] .tile-letter{color:var(--iris-ink)}.tile[data-color="1"] .tile-letter:after{content:"B"}.tile.preview{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink);transform:translateY(-2px)}.tile.hinted{outline:3px dashed var(--ink);outline-offset:-7px}.tile:active{transform:scale(.96)}.tile:focus-visible{z-index:1;outline-offset:2px}.actions{display:grid;grid-template-columns:1fr 1fr 1.5fr;gap:8px;margin-top:18px}.actions button{border:1px solid var(--line);border-radius:8px;background:transparent;min-height:46px;font-size:13px;font-weight:600;color:var(--ink)}.actions button:disabled{opacity:.4}.actions .hint{background:var(--ink);border-color:var(--ink);color:white}.actions button:not(:disabled):hover{box-shadow:inset 0 0 0 1px var(--ink)}.feedback{min-height:38px;line-height:1.6;font-size:13px;color:var(--muted);margin:14px 0 0}.dead-end{border-top:1px solid var(--line);padding:16px 0;display:flex;flex-wrap:wrap;gap:5px 12px;font-size:13px}.finish{margin-top:9px;background:#d7eacb;padding:23px;border-radius:16px;display:flex;align-items:center;justify-content:space-between;gap:20px}.finish h2{font-size:30px;letter-spacing:-1px;margin:0 0 3px}.finish p{font-size:12px;margin:0}.finish-leaf{font-size:26px;float:left;margin-right:12px}.finish button{font-size:12px;font-weight:600;background:transparent;border:0;color:var(--ink);min-height:44px;text-align:left;max-width:135px}.finish button span{display:block;font-size:21px;margin-top:4px}.notice{margin:12px 0;padding:16px;border:1px solid #a7c0ad;border-radius:10px;font-size:13px;line-height:1.6}.notice p{margin:0 0 8px}.notice button{border:1px solid var(--ink);border-radius:6px;min-height:44px;background:var(--white);color:var(--ink);padding:9px 13px;font-weight:600}.storage{background:#f8f4e8}.rules-summary{max-width:620px;margin:30px 0 50px}.rules-summary h2{font-size:22px;letter-spacing:-.6px;margin:0 0 12px}.rules-summary p{font-size:14px;line-height:1.8;color:var(--muted)}.rules-summary>a{font-size:13px;font-weight:650}.rules-summary details{margin-top:25px;font-size:13px}.rules-summary summary{cursor:pointer;min-height:30px}footer{border-top:1px solid var(--line);padding:25px 0 33px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--muted)}footer a{text-decoration:none}dialog{border:1px solid var(--line);border-radius:17px;background:var(--white);color:var(--ink);width:min(420px,calc(100% - 32px));padding:28px}dialog::backdrop{background:#183b2b75}dialog h2{font-size:25px;letter-spacing:-.7px;margin:0 0 15px}dialog p{font-size:14px;line-height:1.7}.dialog-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:10px;margin-top:24px}.dialog-actions button{padding:10px 15px;min-height:44px;border:1px solid var(--line);border-radius:7px;background:var(--white);color:var(--ink)}.dialog-actions button[value=confirm]{background:var(--ink);color:white}.guide{max-width:820px;padding-top:48px}.guide h1{font-size:48px;line-height:1.1;letter-spacing:-2.5px}.guide .introduction{max-width:630px;font-size:18px;line-height:1.7}.guide section{margin:40px 0}.guide h2{font-size:26px;letter-spacing:-.7px}.guide p,.guide li{font-size:15px;line-height:1.8;color:var(--muted)}.guide ol{padding-left:21px}.example{display:flex;align-items:center;gap:25px;padding:24px 0}.mini{display:grid;grid-template-columns:repeat(2,48px);gap:5px}.mini span{height:48px;display:grid;place-items:center;background:var(--fern);border-radius:8px;font-size:18px;color:var(--fern-ink);font-weight:650}.mini .b{background:var(--iris);color:var(--iris-ink)}.mini .empty{background:transparent;border:1px dashed var(--line)}.example .arrow{font-size:28px;color:var(--muted)}.play-link{display:inline-flex;background:var(--ink);color:white;text-decoration:none;padding:14px 24px;min-height:48px;border-radius:8px;margin:5px 0 45px}
@media(max-width:760px){.site-header,main,footer{width:min(540px,calc(100% - 36px))}.site-header{height:78px}.wordmark{font-size:22px}.wordmark svg{width:29px}.site-header>a:last-child{font-size:12px}.game-layout{display:flex;flex-direction:column;gap:22px;padding:27px 0 0}.intro{padding:0;display:grid;grid-template-columns:1fr auto;gap:0 15px;width:100%}h1{font-size:40px;letter-spacing:-2.3px;margin:0 0 11px}.lead{font-size:14px;margin:0 0 18px;grid-column:1}.lead br{display:none}.mode-switch{grid-column:1;justify-self:start}.mode-switch button{padding:8px 20px}.edition{grid-column:1;margin:8px 0 0;font-size:11px}.counters{grid-column:2;grid-row:1/4;gap:18px;align-self:center}.counters strong{font-size:37px}.counters span{font-size:11px}.legend{grid-column:2;grid-row:4;margin:0;justify-self:end;gap:10px;font-size:10px;align-items:center}.legend-leaf{width:10px;height:10px}.legend-seed{font-size:12px}.new-board{grid-column:1/-1;justify-self:start;padding:11px 0;margin-top:3px}.play-area{width:100%}.board-frame{padding:10px;border-radius:20px 20px 5px 20px}.board{gap:6px}.tile{border-radius:11px 11px 3px 11px}.tile[data-color="1"]{border-radius:11px 11px 11px 3px}.tile .seed{font-size:36px}.tile-letter{font-size:9px;right:6px;bottom:5px}.actions{margin-top:15px}.rules-summary{margin:34px 0 36px}.guide{padding-top:30px}.guide h1{font-size:38px}.guide .introduction{font-size:16px}.guide section{margin:28px 0}footer{font-size:10px}}@media(max-width:360px){.site-header,main,footer{width:calc(100% - 26px)}.counters{gap:12px}.counters strong{font-size:31px}.counters span{font-size:10px}h1{font-size:34px}.intro{gap:0 9px}.legend{gap:5px;font-size:9px}.mode-switch button{padding:7px 17px}.board-frame{padding:8px}.tile .seed{font-size:28px}.finish{padding:17px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.tile.preview{transform:none}}