.game-page{flex-direction:column;gap:24px;width:100%;max-width:880px;margin:0 auto;padding:24px 24px 48px;display:flex}.game-page-header h1{font-size:26px}.game-page-subtitle{color:var(--muted);margin-top:4px;font-size:14.5px}.back-link{cursor:pointer;font-family:var(--font-body);color:var(--muted);background:0 0;border:none;align-items:center;gap:4px;padding:6px 4px;font-size:13.5px;font-weight:700;display:inline-flex}.back-link:hover{color:var(--ink)}.theme-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin:0;padding:0;list-style:none;display:grid}.theme-card{text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);cursor:pointer;width:100%;transition:transform .18s var(--ease), box-shadow .18s;flex-direction:column;gap:6px;padding:20px;display:flex}.theme-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-3px)}.theme-card-name{color:var(--ink);font-size:16px;font-weight:700}.theme-card-meta{color:var(--muted);font-size:12.5px}.activity-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin:0;padding:0;list-style:none;display:grid}.activity-card{text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);cursor:pointer;width:100%;min-height:44px;transition:transform .18s var(--ease), box-shadow .18s;flex-direction:column;gap:8px;padding:20px;display:flex}.activity-card:hover:not(:disabled){box-shadow:var(--shadow-sm);transform:translateY(-3px)}.activity-card:disabled{opacity:.5;cursor:not-allowed}.activity-card-icon{border-radius:var(--r-sm);background:var(--accent-soft);width:38px;height:38px;color:var(--accent);justify-content:center;align-items:center;display:flex}.activity-card-title{color:var(--ink);font-size:15.5px;font-weight:700}.activity-card-desc{color:var(--muted);font-size:13px;line-height:1.4}@media (width<=720px){.game-page{padding:18px 16px 40px}}