:root{--bg: #0a1020;--panel: #121a30;--panel-2: #1a2444;--edge: #27345c;--ink: #e9eeff;--muted: #8fa0c8;--red: #ff5a6e;--red-d: #b8273a;--yellow: #ffd24a;--yellow-d: #c79612;--frame: #2b3b6b;--frame-2: #1d2a52;font-family:Segoe UI,system-ui,sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(1100px 650px at 50% -8%,#15203c 0%,var(--bg) 62%);color:var(--ink);display:flex;justify-content:center;-webkit-font-smoothing:antialiased}#app{width:min(820px,100%);padding:14px 16px 40px}.topbar{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}.title{font-weight:800;letter-spacing:.4px;font-size:21px}.title .a{color:var(--red)}.title .b{color:var(--yellow)}.spacer{flex:1}button{font:inherit;cursor:pointer;color:var(--ink);background:var(--panel-2);border:1px solid var(--edge);border-radius:10px;padding:8px 13px;transition:transform .06s,background .15s,border-color .15s}button:hover:not(:disabled){background:#243264;border-color:#3a4c84}button:active:not(:disabled){transform:translateY(1px)}button:disabled{opacity:.45;cursor:not-allowed}.icon-btn{padding:7px 11px}.seg{display:inline-flex;border:1px solid var(--edge);border-radius:10px;overflow:hidden}.seg button{border:0;border-radius:0;background:transparent;padding:7px 12px;font-size:13px}.seg button.on{background:var(--panel-2);color:#fff;font-weight:700}.seg button+button{border-left:1px solid var(--edge)}.statusbar{display:flex;align-items:center;gap:10px;margin:4px 0 10px;background:var(--panel);border:1px solid var(--edge);border-radius:12px;padding:10px 14px}.turn-pill{display:inline-flex;align-items:center;gap:8px;font-weight:700}.chip{width:18px;height:18px;border-radius:50%;box-shadow:inset 0 -3px 6px #00000059}.chip.red{background:radial-gradient(circle at 35% 30%,#ff8a98,var(--red) 55%,var(--red-d))}.chip.yellow{background:radial-gradient(circle at 35% 30%,#ffe89a,var(--yellow) 55%,var(--yellow-d))}.statusbar .msg{color:var(--muted);font-size:14px}.statusbar .msg b{color:var(--ink)}canvas{display:block;width:100%;height:auto;border-radius:16px;touch-action:manipulation}.board-wrap{background:var(--panel);border:1px solid var(--edge);border-radius:18px;padding:10px;box-shadow:0 10px 30px #00000073}.hint{color:var(--muted);font-size:13px;text-align:center;margin-top:10px;line-height:1.4}.hint b{color:var(--ink)}.overlay{position:fixed;inset:0;background:#060912c7;backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;z-index:20}.modal{background:var(--panel);border:1px solid var(--edge);border-radius:16px;padding:22px;width:min(540px,92vw);box-shadow:0 10px 30px #00000080;text-align:center}.modal h2{margin:0 0 6px}.modal p{color:var(--muted);margin:0 0 14px}.modal .row{display:flex;gap:8px;justify-content:center;margin-top:16px;flex-wrap:wrap}.help-content{text-align:left;max-height:66vh;overflow-y:auto}.help-content h3{margin:14px 0 4px;color:var(--yellow);font-size:14px}.help-content p,.help-content li{color:var(--muted);font-size:13px;line-height:1.5}.help-content ul{margin:4px 0;padding-left:18px}.help-content b{color:var(--ink)}.win-red h2{color:var(--red)}.win-yellow h2{color:var(--yellow)}.online-panel{margin:8px auto;max-width:540px}.online-card{background:#ffffff0f;border:1px solid rgba(255,255,255,.15);border-radius:10px;padding:10px 12px;display:flex;flex-direction:column;gap:8px}.online-card .online-row{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.online-card input{width:96px}