:root{color-scheme:dark;--bg:#10100f;--surface:#1a1a19;--line:#383835;--muted:#c3c2b7;--blue:#3987e5;--red:#e5484d;--wood:#d3a65e}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 50% 0,#292721,var(--bg) 55%);color:#fff;font-family:system-ui,-apple-system,"Yu Gothic",sans-serif;min-height:100vh}button{border:1px solid #55554f;background:#292927;color:#fff;padding:.55rem .85rem;border-radius:7px;cursor:pointer;font-weight:700}button:hover{background:#383835}button:disabled{opacity:.4;cursor:not-allowed}.danger{border-color:#87383b;color:#ffb0b2}header{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(16px,4vw,48px);border-bottom:1px solid var(--line);background:#171716dd}h1{margin:0;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;letter-spacing:.12em;font-size:clamp(1.35rem,3vw,2rem)}.header-actions{display:flex;gap:8px}main{display:grid;grid-template-columns:minmax(430px,680px) minmax(280px,380px);gap:24px;max-width:1120px;margin:0 auto;padding:20px}.game{display:flex;flex-direction:column;align-items:center;min-width:0}.status{font-weight:800;min-height:2.2rem;color:#f2dfb9}.board-wrap{width:min(100%,620px);position:relative;padding-top:19px}.files{position:absolute;top:0;left:0;width:100%;text-align:center;color:var(--muted);font-size:12px;word-spacing:clamp(4px,2.2vw,21px)}.board{aspect-ratio:1;display:grid;grid-template-columns:repeat(9,minmax(0,1fr));grid-template-rows:repeat(9,minmax(0,1fr));border:3px solid #513612;background:repeating-linear-gradient(92deg,#d8ac65 0,#c79750 7%,#d6a961 14%);box-shadow:0 12px 35px #0009}.square{position:relative;border-right:1px solid #5e421e;border-bottom:1px solid #5e421e;display:flex;align-items:center;justify-content:center;padding:5%;cursor:pointer}.square:nth-child(9n){border-right:0}.square:nth-child(n+73){border-bottom:0}.square.target:after{content:"";position:absolute;width:30%;aspect-ratio:1;border-radius:50%;background:#3987e5bb;z-index:0}.square.capture:after{width:75%;border:4px solid #e5484dbb;background:transparent}.square.last{background:#f7e74b55}.square.check{background:#e5484d88;animation:pulse .8s infinite alternate}.piece{position:relative;z-index:1;width:82%;height:90%;clip-path:polygon(50% 0,95% 22%,88% 100%,12% 100%,5% 22%);background:linear-gradient(120deg,#f4cf83,#c99441);color:#17100a;display:flex;align-items:center;justify-content:center;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-weight:900;font-size:clamp(17px,4.3vw,36px);text-shadow:0 1px #fff5;filter:drop-shadow(1px 2px 1px #3b230b88);user-select:none}.piece.white{transform:rotate(180deg)}.piece.selected{filter:drop-shadow(0 0 6px #45a1ff) brightness(1.2);transform:translateY(-5%)}.piece.white.selected{transform:rotate(180deg) translateY(-5%)}.hand{width:min(100%,620px);min-height:58px;background:#20201e;border:1px solid var(--line);margin:9px 0;padding:7px;display:flex;gap:7px;align-items:center;border-radius:8px}.hand:before{content:"☗ 持駒";color:var(--muted);font-size:.8rem;margin-right:5px}.hand.opponent:before{content:"☖ 持駒"}.hand-piece{display:flex;align-items:center;gap:2px;border:1px solid #725c38;background:#d0a459;color:#20150a;padding:5px 7px;font-family:serif;font-weight:900;border-radius:3px}.hand-piece.selected{outline:3px solid var(--blue)}.count{font:700 .75rem system-ui}.controls{display:flex;gap:9px}aside{display:grid;grid-template-rows:minmax(260px,1fr) minmax(220px,1fr);gap:16px;min-height:0}.panel{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px;position:relative;overflow:hidden}.panel h2{font-size:.9rem;color:var(--muted);margin:0 0 8px}.graph-panel canvas{width:100%;height:calc(100% - 24px);min-height:210px}.tooltip{position:absolute;display:none;pointer-events:none;background:#080808ed;border:1px solid #666;padding:6px 8px;border-radius:5px;font-size:.76rem;white-space:nowrap}.record-panel ol{margin:0;padding-left:2.2rem;height:calc(100% - 28px);overflow:auto;columns:2;color:var(--muted)}.record-panel li{padding:3px;color:#eee}dialog{border:1px solid #8e7146;border-radius:10px;background:#222;color:#fff;padding:22px;text-align:center}dialog::backdrop{background:#0009}dialog button{margin:0 4px}.result{position:fixed;inset:0;display:grid;place-items:center;pointer-events:none;z-index:20}.result span,.stamp{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-weight:1000;text-shadow:4px 5px 0 #170000,-2px -2px 0 #fff;color:#e52328;transform:rotate(-8deg);font-size:clamp(4rem,15vw,12rem);white-space:nowrap}.stamp{position:fixed;left:50%;top:48%;z-index:50;pointer-events:none;animation:stamp 1.55s ease-out forwards}.question{position:fixed;z-index:40;color:#ffdd40;font:900 5rem serif;pointer-events:none;animation:float 1.2s forwards}.badchar{position:fixed;top:-80px;color:#e5484d;font:900 3rem serif;z-index:45;pointer-events:none;animation:fall var(--d) linear forwards}.shake{animation:shake .5s}.shake.hard{animation:shakeHard .8s}.vignette:after{content:"";position:fixed;inset:0;z-index:35;pointer-events:none;box-shadow:inset 0 0 130px 45px #e00000;animation:flash 1.2s forwards}.invert{animation:invert .5s 2}.tremble{animation:tremble .45s}.thinking{opacity:.8}
@keyframes stamp{0%{transform:translate(-50%,-50%) rotate(-35deg) scale(5);opacity:0}25%{transform:translate(-50%,-50%) rotate(-8deg) scale(.8);opacity:1}40%{transform:translate(-50%,-50%) rotate(-8deg) scale(1.1)}75%{opacity:1}100%{transform:translate(-50%,-60%) rotate(-8deg) scale(1);opacity:0}}@keyframes float{to{transform:translateY(-90px) scale(1.4);opacity:0}}@keyframes fall{to{transform:translateY(115vh) rotate(720deg);opacity:.5}}@keyframes shake{0%,100%{transform:none}20%{transform:translate(-7px,4px) rotate(-.4deg)}50%{transform:translate(7px,-5px)}80%{transform:translate(-4px,5px)}}@keyframes shakeHard{0%,100%{transform:none}15%{transform:translate(-15px,9px) rotate(-1deg)}35%{transform:translate(14px,-10px)}55%{transform:translate(-12px,-7px)}75%{transform:translate(10px,11px)}}@keyframes flash{to{opacity:0}}@keyframes invert{50%{filter:invert(1)}}@keyframes tremble{25%{transform:translateX(-4px)}50%{transform:translateX(4px)}75%{transform:translateX(-3px)}}@keyframes pulse{to{filter:brightness(1.5)}}
@media(max-width:800px){header{height:60px;padding:0 12px}.header-actions button{padding:.45rem;font-size:.75rem}main{grid-template-columns:1fr;padding:12px;gap:12px}.board-wrap{max-width:590px}aside{grid-template-rows:260px 240px}.piece{font-size:clamp(17px,7vw,34px)}.record-panel ol{columns:2}}