.play-hero,.game-layout{width:min(100%,var(--play-width));margin:0 auto;display:grid;grid-template-columns:minmax(0,738px) minmax(0,1fr);justify-content:center;align-items:start;gap:16px}.board-stage,.control-panel,.side-panel,.profile-panel,.download-section,.content-section,.site-footer,.hero,.card{border:1px solid var(--line);border-radius:8px;background:rgba(255,253,247,0.88);box-shadow:0 22px 70px var(--shadow)}.board-stage{position:relative;padding:var(--board-card-padding)}.puzzle-id-chip{position:absolute;top:12px;right:14px;z-index:5;display:inline-flex;align-items:center;gap:7px;min-height:32px;max-width:min(230px,calc(100% - 28px));padding:6px 9px;border:1px solid rgba(169,139,97,0.44);border-radius:8px;color:var(--accent-dark);background:rgba(255,253,247,0.92);font-size:11px;font-weight:950}.puzzle-id-chip span{color:var(--muted);letter-spacing:0.16em}.puzzle-id-chip strong{overflow:hidden;color:var(--ink);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.control-panel,.side-panel,.profile-panel{padding:16px}.control-panel{position:sticky;top:14px}.board-header{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:12px;margin-bottom:10px}.board-header.standard-only{grid-template-columns:1fr}.puzzle-mode-label:empty{display:none}.board-header h1,.board-header h2,.panel-heading h1,.section-heading h2,.download-section h2,.result-panel h2,.mode-page h1,.mode-page h2,.blog-page h1,.blog-page h2{margin:4px 0 0;color:var(--ink);font-size:clamp(25px,3vw,42px);line-height:1.02;letter-spacing:0}.mode-tabs{display:grid;grid-template-columns:repeat(2,minmax(96px,1fr));gap:8px}