.play { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 20px; padding: 20px 22px 40px; max-width: 1280px; margin: 0 auto; align-items: start; --board: min(calc(100vh - 330px), 600px); }
.board-panel { padding: 12px 18px 14px; display: flex; flex-direction: column; align-items: center; }
.board-panel .player-bar { width: calc(var(--board) + 28px); }
.board-stage { position: relative; }
.board-overlay { position: absolute; inset: 0 0 46px 28px; z-index: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; background: rgba(0, 0, 0, 0.72); border-radius: 6px; text-align: center; padding: 20px; }
.board-overlay .ov-title { font-family: var(--sans); font-size: 20px; font-weight: 800; letter-spacing: -0.01em; }
.board-overlay .ov-sub { color: var(--muted); font-size: 13px; }
.status-strip { width: calc(var(--board) + 28px); border-top: 1px solid var(--border); margin-top: 10px; padding-top: 12px; display: flex; justify-content: space-between; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.status-line { font-family: var(--sans); font-size: 16px; font-weight: 700; letter-spacing: -0.01em; }
.status-line.good { color: var(--up); } .status-line.bad { color: var(--down); }
.engine-line { display: flex; gap: 14px; color: var(--muted); font-family: var(--mono); font-size: 11.5px; flex-wrap: wrap; }
.deadline { color: var(--down); }
.moves-row { width: calc(var(--board) + 28px); margin-top: 12px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 14px; align-items: start; border-top: 1px solid var(--border); padding-top: 12px; }
.moves-row .move-list { max-height: 120px; }
.actions-inline { display: grid; grid-template-columns: repeat(3, auto); gap: 6px; }
.side { display: flex; flex-direction: column; gap: 14px; }
.guide { padding: 6px 18px 12px; }
.step { padding: 14px 0; border-bottom: 1px solid var(--border); }
.step:last-child { border-bottom: 0; }
.step-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.step-head .n { font-family: var(--mono); color: var(--accent); font-weight: 700; font-size: 12px; letter-spacing: 0.1em; }
.seg.block { display: flex; width: 100%; }
.seg.block button { flex: 1; padding: 9px 0; }
.headline { font-family: var(--mono); font-weight: 700; font-size: 13px; margin: 0 0 10px; letter-spacing: 0.02em; }
.chain-info { font-size: 12px; color: var(--muted); line-height: 1.7; font-family: var(--mono); }
.chain-info code { background: var(--panel-2); border: 1px solid var(--border); padding: 1px 5px; border-radius: 3px; font-size: 11px; color: var(--text); }
@media (max-width: 1000px) { .play { grid-template-columns: 1fr; --board: min(calc(100vw - 80px), 560px); } }
@media (max-width: 900px) { .play { padding: 12px; --board: calc(100vw - 118px); } .board-panel .player-bar, .status-strip, .moves-row { width: 100%; } .moves-row { grid-template-columns: 1fr; } .actions-inline { grid-template-columns: repeat(3, 1fr); } }