:root{font-family:'Yu Gothic','Hiragino Kaku Gothic ProN',sans-serif;color:#4d443b;background:#f8f1e7;font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 10% 10%,#fce2c960,transparent 50%)}main{max-width:480px;margin:auto;padding:38px 22px 20px}header{text-align:center;margin-bottom:26px}.eyebrow{font:10px Georgia,serif;letter-spacing:3px;color:#a58b72}h1{font-family:serif;font-size:43px;font-weight:600;letter-spacing:6px;margin:12px 0 8px}.sun{display:inline-block;color:#c97544;font-size:36px;margin-left:7px;vertical-align:3px}header p{font-size:12px;color:#917f6e;letter-spacing:2px}.game{padding:22px;background:#fffaf2;border:1px solid #e8dccb;border-radius:23px;box-shadow:0 14px 40px #74533709}.status{display:flex;align-items:center;gap:15px;padding:0 2px 17px;font-size:12px}strong{font-size:22px;font-weight:500;color:#b66c42;margin:0 3px}.size{margin-left:auto;font:11px Georgia,serif;color:#a59380;letter-spacing:2px}#dots{display:flex;gap:5px}i{width:6px;height:6px;background:#c88b5d;border-radius:50%}i.used{background:#e8ded0}.board{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));gap:5px}.cell{aspect-ratio:1;border:1px solid #e4d6c2;border-radius:6px;background:#eee3d2;box-shadow:0 2px 0 #e1d2bd;cursor:pointer;min-width:0;padding:0;font:600 14px Georgia,serif;color:#75614d;touch-action:manipulation;transition:background .15s,transform .15s}.cell:hover:not([aria-disabled]){background:#e3ceb1;transform:translateY(-1px)}button:focus-visible{outline:3px solid #865631;outline-offset:3px}.cell.hot{background:#d57852;border-color:#c26844;color:white}.cell.warm{background:#edc67c;border-color:#d6ae62;color:#735320}.cell.cold{background:#c6dbe0;border-color:#aec9d0;color:#486e7b}.cell.found,.cell.revealed{background:#b1be87;border-color:#8d9e63;color:#fff;font-size:22px}.cell[aria-disabled]{cursor:default}.feedback{display:flex;align-items:center;gap:15px;min-height:100px;padding:20px 2px 15px}.feedback>span{font-size:27px;color:#bb865d;min-width:32px;text-align:center}.feedback h2{font-size:17px;letter-spacing:1px;margin:0 0 7px}.feedback p{font-size:10px;color:#8b7e6c;margin:0;line-height:1.8}.restart{width:100%;border:1px solid #daccb8;border-radius:10px;background:transparent;padding:13px 17px;text-align:left;color:#75624f;font-size:12px;font-family:inherit;cursor:pointer}.restart span{float:right}.restart:hover{background:#f0e5d5}.guide{text-align:center;margin-top:25px}.guide h2{font-size:13px;font-weight:500;letter-spacing:1px}.guide p{font-size:11px;line-height:1.9;color:#92816e}.legend{display:flex;justify-content:center;gap:17px;font-size:10px;margin-top:17px}.guide .small{font-size:9px;line-height:2;color:#a29280}footer{text-align:center;font-size:9px;letter-spacing:2px;color:#ac9d8b;padding-top:16px}@media(max-width:380px){main{padding:22px 14px 16px}.game{padding:16px}.board{gap:4px}h1{font-size:36px}.feedback p{font-size:9px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}

/* 近さレベル：冷たい青からあたたかい橙へ */
.cell.cool{background:#d9e4da;border-color:#c0d1c5;color:#4d6c5e}
.cell.mild{background:#eadbb3;border-color:#d6c492;color:#745d2b}
.legend{gap:8px;flex-wrap:wrap;font-size:9px}
.legend span{white-space:nowrap;border-bottom:3px solid;padding-bottom:5px}
.legend span:nth-child(1){border-color:#aec9d0}
.legend span:nth-child(2){border-color:#c0d1c5}
.legend span:nth-child(3){border-color:#d6c492}
.legend span:nth-child(4){border-color:#d6ae62}
.legend span:nth-child(5){border-color:#c26844}
.cell.neighbor-reveal{box-shadow:inset 0 0 0 1px #fff5,0 2px 0 #c26844}
.ending-note{text-align:center;font-size:10px;color:#92816e;line-height:1.8;margin-top:18px}