:root{--bg:#0e1110;--panel:#171c19;--tile:#242b27;--muted:#89938c;--lime:#d6ff55;--mint:#9ef0c0;--line:#29312c}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 50% -20%,#243027 0,#0e1110 55%);color:#f4f7f2;font-family:Arial,Helvetica,sans-serif;min-height:100vh}.app{max-width:520px;margin:auto;padding:18px 18px 28px}.topbar,.hero,.tabs,.duo-panel,.tray-title,.new-game{display:flex;align-items:center;justify-content:space-between}.topbar{margin-bottom:28px}.brand{display:flex;gap:10px;align-items:center}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--lime);color:var(--lime);font-size:23px}.brand b{display:block;letter-spacing:2px;font-size:14px}.brand small{display:block;color:var(--muted);font-size:9px;letter-spacing:3px;margin-top:3px}.icon-btn{background:none;border:1px solid var(--line);color:var(--mint);width:36px;height:36px;font-size:19px}.hero{align-items:flex-end;margin-bottom:20px}.eyebrow,.score span,.duo-panel span,.tray-title span{color:var(--muted);font-size:10px;letter-spacing:2px;font-weight:700}.hero h1{font-size:29px;line-height:1.07;margin:7px 0 0;letter-spacing:-.5px}.hero em{color:var(--lime);font-style:normal}.score{text-align:right}.score strong{display:block;color:var(--lime);font-size:36px;line-height:1;margin:5px 0}.score small{font-size:9px;color:var(--muted);letter-spacing:1px}.score small b{color:#e9eee8}.tabs{background:var(--panel);padding:4px;margin-bottom:14px}.tab{flex:1;background:none;border:0;color:var(--muted);font-size:11px;letter-spacing:2px;padding:12px 0}.tab.active{background:var(--lime);color:#10150f;font-weight:800}.duo-panel{background:var(--panel);padding:12px 16px;margin-bottom:14px}.duo-panel div{display:flex;flex-direction:column;gap:4px}.duo-panel strong{font-size:20px;color:var(--lime)}.opponent{text-align:right}.versus{font-size:11px;color:var(--muted);font-weight:bold}.hidden{display:none!important}.board-wrap{position:relative;background:var(--panel);padding:12px;margin-bottom:20px}.board{display:grid;grid-template-columns:repeat(8,1fr);gap:5px;aspect-ratio:1}.cell{background:var(--tile);border:1px solid #303933;transition:.15s}.cell.filled{background:var(--mint);border-color:var(--mint);box-shadow:0 0 12px #9ef0c044}.cell.preview{background:#758c55;border-color:#b8d978}.combo{position:absolute;top:-11px;right:14px;background:var(--lime);color:#14200e;padding:6px 9px;font-size:10px;font-weight:bold;letter-spacing:1px}.combo b{font-size:13px;margin-left:4px}.tray-title{margin-bottom:10px}.tray-title small{color:var(--muted);font-size:11px}.tray{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-bottom:18px}.piece{background:var(--panel);min-height:82px;border:1px solid var(--line);display:grid;place-items:center;cursor:pointer}.piece.selected{border-color:var(--lime);box-shadow:0 0 0 1px var(--lime)}.mini{display:grid;gap:3px}.mini i{width:14px;height:14px;background:var(--lime);display:block}.mini i.off{visibility:hidden}.new-game{width:100%;justify-content:center;gap:8px;background:var(--lime);color:#11170e;border:0;padding:14px;font-weight:800;letter-spacing:1.5px}.new-game span{font-size:18px}.hint{text-align:center;color:var(--muted);font-size:11px;line-height:1.5;margin:15px 0 0}@media(min-width:480px){.app{padding-top:28px}.cell{gap:6px}}