@font-face{font-family:GameRounded;src:local(Arial Rounded MT Bold),local(ArialRoundedMTBold);font-weight:600 900;unicode-range:U+30-39}:root{color:#603b24;font-synthesis:none;--cream:#fbf7ee;--ink:#603b24;--line:#dec9ac;--brown:#865c3e;--pale:#f5ead9;--orange:#cb853c;--selected:#f7d9a8;--danger:#b74f3b;background:#fbf7ee;font-family:GameRounded,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-weight:600}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,select,input{touch-action:manipulation}button{cursor:pointer;-webkit-tap-highlight-color:transparent}button:disabled{cursor:default}button:focus-visible,select:focus-visible,input:focus-visible{outline-offset:4px;outline:4px solid #a3682d}a{color:inherit}h1,h2,h3,h4,p{margin:0}h2{font-size:clamp(28px,3vw,42px);font-weight:800}h3{font-size:24px}small{color:#896b52;font-weight:500;display:block}svg{flex-shrink:0}button 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svg{width:38px;height:38px}.bottom-nav .button.active{background:var(--brown);color:#fffaf2}.notice{z-index:9;background:#fff0d7;border:2px solid #d5aa6a;border-radius:16px;justify-content:space-between;align-items:center;gap:16px;max-width:1050px;margin:12px auto;padding:12px 20px;font-size:15px;display:flex;position:relative}.notice.error{background:#fff0e9;border-color:#bd7360}.notice .button{white-space:nowrap;min-height:48px;padding:8px 16px;font-size:15px}.home h2{margin-bottom:30px}.home-main{grid-template-columns:1.1fr .8fr;align-items:center;gap:70px;display:grid}.challenge-card{background:#f4e7d4;border:2px solid #e2c7a2;border-radius:28px;padding:36px 38px}.card-kicker{color:#8d6a48;margin-bottom:16px;font-size:17px}.challenge-card h3{margin-bottom:14px;font-size:38px}.challenge-card p{max-width:360px;margin-bottom:26px;font-size:17px}.challenge-card .primary{width:100%}.challenge-card 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minmax(280px,1fr);justify-content:center;align-items:start;gap:38px;max-width:1230px;margin:auto;display:grid}.board-wrap{flex-direction:column;align-items:center;max-width:100%;display:flex}.board{width:var(--board-side);height:var(--board-side);grid-template-columns:repeat(var(--size),minmax(0,1fr));grid-template-rows:repeat(var(--size),minmax(0,1fr));background:#784f35;border:10px solid #784f35;border-radius:21px;gap:0;max-width:100%;display:grid;overflow:hidden}.cell{color:#613d24;min-width:0;min-height:0;font-size:calc(var(--board-side) / var(--size) * .62);background:#fff9ef;border:2px solid #ddc7aa;border-top:0;border-left:0;border-radius:0;justify-content:center;align-items:center;padding:3px;font-weight:800;line-height:1;display:flex;position:relative}.cell.given{color:#5b351e;background:#fcf6eb;font-weight:850}.cell.editable{color:#966338}.cell:disabled{cursor:default}.cell.box-right{border-right:7px solid #784f35}.cell.box-bottom{border-bottom:7px solid 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32px);padding:12px;box-shadow:0 4px 12px #59351e0c}.picker-heading{justify-content:space-between;align-items:center;margin-bottom:10px;padding-left:4px;font-size:18px;line-height:1.2;display:flex}.picker-heading small{margin-top:5px;font-size:12px}.picker-close{color:#79553a;background:#f2e6d5;border:0;border-radius:50%;justify-content:center;align-items:center;min-width:44px;min-height:44px;padding:8px;display:flex}.picker-close svg{width:22px;height:22px}.number-picker .keypad{grid-template-columns:repeat(var(--picker-cols),minmax(0,1fr));gap:8px;display:grid}.number-picker .number-key{aspect-ratio:1;background:#fffdf7;border:1px solid #c29b6e;border-radius:14px;min-height:64px;padding:4px;font-size:44px;font-weight:800;box-shadow:0 2px #e4d3bb}.number-picker.picker-4 .number-key{font-size:52px}.number-picker .number-key .symbol-art{width:79%;height:79%;max-height:none}.number-picker .number-key.selected{background:#f7d9a8;border-color:#a76b33}.number-picker .number-key:disabled{opacity:.56}.game-screen .toast{max-width:calc(100% - 32px);font-size:15px;bottom:78px}@media (max-width:1199px){.game-screen{--board-limit:680px;--board-gutter:64px;--picker-width:252px}}@media (max-width:999px){.game-screen .game-layout{flex-direction:column;gap:12px}.game-screen.has-picker .game-layout{--board-side:min(calc(100svw - var(--board-gutter)),calc(100cqh - 68px - var(--picker-reserve)),var(--board-limit));gap:12px}.number-picker{width:min(calc(100svw - var(--board-gutter)),var(--board-limit))}.number-picker .keypad{grid-template-columns:repeat(var(--choice-count),minmax(0,1fr))}.number-picker .number-key{aspect-ratio:auto;height:64px;min-height:56px;font-size:38px}.number-picker.picker-4 .number-key{font-size:44px}}@media (max-width:750px){.game-screen{--picker-reserve:218px}.number-picker .keypad{grid-template-columns:repeat(var(--phone-cols),minmax(0,1fr))}.number-picker .number-key{height:56px;min-height:56px;font-size:32px}.number-picker.picker-4 .number-key{font-size:40px}}@media (max-width:550px){.game-screen{--board-limit:360px;--board-gutter:32px}.game-screen .play-area{justify-content:flex-start;padding-top:clamp(24px,7svh,72px)}.game-screen .topbar{grid-template-columns:44px 1fr 94px;width:100%;padding:6px 12px}.game-screen .topbar h1{white-space:normal;font-size:19px}.game-screen .back-button{width:44px;min-height:44px}.game-screen .board{border-width:6px}.game-screen .board.size-6,.game-screen .board.size-9{border-width:4px}.game-tools{gap:2px}.game-tools>.button{gap:4px;min-width:62px;padding:8px;font-size:13px}.game-tools>.button svg{width:19px;height:19px}.game-tools>.more-button{min-width:44px}}@media (max-height:550px) and (orientation:landscape){.game-screen .play-area{flex-direction:row;justify-content:center;gap:20px;padding:12px}.game-screen .game-layout,.game-screen.has-picker .game-layout{--board-side:min(calc(100svh - 88px),calc(100svw - 200px),400px);flex-direction:row;gap:20px;width:auto}.game-screen.has-picker .game-layout{--board-side:min(calc(100svh - 88px),calc(100svw - 456px),400px)}.game-tools{flex-direction:column;gap:2px;max-height:100%}.game-tools>.button{width:90px;min-width:90px;padding:6px;font-size:13px}.game-tools>.hint-button>span{font-size:13px}.game-tools>.more-button{width:90px}.game-menu{max-height:calc(100svh - 88px);position:fixed;bottom:12px;left:50%;right:auto;transform:translate(-50%)}.number-picker{width:236px;padding:10px}.number-picker .number-key,.number-picker.picker-4 .number-key{aspect-ratio:1;height:auto;min-height:58px;font-size:34px}.number-picker .keypad{grid-template-columns:repeat(var(--picker-cols),minmax(0,1fr));gap:6px}.picker-heading{margin-bottom:8px;font-size:16px}}