:root{--bg: #0d1117;--panel: #161b22;--panel-2: #1c232d;--line: #2b333d;--ink: #e6edf3;--muted: #8b97a6;--accent: #e0b34a;--accent-dim: #6b5a26;--good: #4ec97a;--bad: #e0644a;--tile-face: #f5efe2;--tile-ink: #1a1410;--pip: #1a1410}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Segoe UI,system-ui,-apple-system,sans-serif}#app{max-width:960px;margin:0 auto;padding:18px 16px 48px}header.topbar{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:16px}header.topbar h1{font-size:28px;letter-spacing:6px;margin:0;font-weight:800;color:var(--accent);text-shadow:0 1px 0 #000}.matchscore{font-size:14px;color:var(--muted)}.matchscore b{color:var(--ink)}.controls{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}.seg button{background:var(--panel);color:var(--muted);border:none;padding:6px 12px;font-size:13px;cursor:pointer}.seg button.active{background:var(--accent);color:#1a1410;font-weight:700}.seg button:not(.active):hover{color:var(--ink)}button.btn{background:var(--panel-2);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:6px 14px;font-size:13px;cursor:pointer}button.btn:hover{border-color:var(--accent)}.label{font-size:12px;color:var(--muted);margin-right:4px}.board{background:linear-gradient(180deg,var(--panel) 0%,#11161d 100%);border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:16px}.row-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;font-size:13px;color:var(--muted)}.row-head b{color:var(--ink)}.opp-hand{display:flex;gap:6px;flex-wrap:wrap;min-height:46px;margin-bottom:14px}.opp-back{width:28px;height:44px;border-radius:5px;background:repeating-linear-gradient(45deg,#2a3340,#2a3340 4px,#222a35 4px 8px);border:1px solid #3a4453}.chainwrap{border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);padding:14px 0;margin:6px 0 14px}.endbar{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:8px}.endval{display:inline-flex;align-items:center;gap:6px}.endval .chip{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--accent);color:#1a1410;font-weight:800}.chain{display:flex;gap:4px;flex-wrap:wrap;align-items:center;min-height:50px;overflow-x:auto;padding:2px}.chain .empty{color:var(--muted);font-style:italic}.hand{display:flex;gap:8px;flex-wrap:wrap;min-height:64px}.domino{display:inline-flex;background:var(--tile-face);border-radius:7px;border:1px solid #c9c0ad;box-shadow:0 2px 4px #00000073;padding:3px;gap:3px}.domino.chained{transform:scale(.78);transform-origin:center;margin:-4px}.domino .half{position:relative;width:30px;height:30px;background:var(--tile-face);border-radius:4px}.domino .half:after{content:"";position:absolute;right:-2px;top:4px;bottom:4px;width:1px;background:#cdc4b1}.domino .half:last-child:after{display:none}.pip-dot{position:absolute;width:6px;height:6px;border-radius:50%;background:var(--pip);transform:translate(-50%,-50%)}.hand .domino{cursor:default;transition:transform .08s ease,box-shadow .08s ease}.hand .domino.playable{cursor:pointer;outline:2px solid var(--good);outline-offset:1px}.hand .domino.playable:hover{transform:translateY(-4px);box-shadow:0 6px 12px #00000080}.hand .domino.dead{opacity:.45}.hand .domino.selected{outline:2px solid var(--accent);transform:translateY(-4px)}.statusbar{display:flex;align-items:center;gap:10px;min-height:28px;margin:10px 0 4px;font-size:15px}.statusbar .dot{width:10px;height:10px;border-radius:50%;background:var(--muted)}.statusbar.you .dot{background:var(--good)}.statusbar.cpu .dot{background:var(--accent)}.statusbar .msg{color:var(--ink)}.statusbar .sub{color:var(--muted);font-size:13px}.endpick{display:flex;gap:10px;align-items:center;margin-top:8px;font-size:13px;color:var(--muted)}.banner{margin-top:14px;padding:14px 16px;border-radius:12px;border:1px solid var(--line);background:var(--panel-2)}.banner h2{margin:0 0 6px;font-size:18px}.banner.win h2{color:var(--good)}.banner.lose h2{color:var(--bad)}.banner.tie h2{color:var(--accent)}.banner p{margin:4px 0;color:var(--muted);font-size:14px}.banner .actions{margin-top:10px}.foot{margin-top:18px;font-size:12px;color:var(--muted);text-align:center;line-height:1.6}