:root{--bg: #0d0d1a;--surface: #14142a;--surface-lift: #1e1e3a;--fg: #f5f5f4;--muted: #b8a07a;--accent: #f5c542;--vermilion: #d93636;--border: #2a2a4a;--grid-line: rgba(184, 160, 122, .12);--font-display: "Oxanium", sans-serif;--font-zh: "ZCOOL KuaiLe", cursive;--font-body: "IBM Plex Sans", sans-serif;--font-zh-body: "Noto Sans SC", sans-serif;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.25rem;--text-xl: 1.75rem;--text-2xl: 2.5rem;--radius: 12px;--radius-sm: 8px;--radius-lg: 16px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg);color:var(--fg);font-family:var(--font-body),var(--font-zh-body),sans-serif;overflow:hidden}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes breathe{0%,to{box-shadow:0 0 20px #f5c5424d}50%{box-shadow:0 0 35px #f5c54299}}@media (max-width: 640px){body{overflow:auto}.game-area{flex-direction:column!important;align-items:center!important}.side-panel{width:100%!important;max-width:300px!important;flex-direction:row!important;flex-wrap:wrap!important}.side-panel>div{flex:1 1 140px!important}.row-cards{flex:1 1 100%!important}}