:root{--gold: #D4AF37;--gold-dark: #B8942F;--gold-light: #E8C84A;--bg-page: #F8F8F8;--bg-card: #FFFFFF;--bg-input: #E8E8E8;--bg-ai-msg: #F0F0F0;--text-title: #333333;--text-body: #666666;--text-aux: #999999;--text-disabled: #CCCCCC;--green: #52C41A;--red: #FF4D4F;--yellow: #FAAD14;--blue: #1890FF;--sp-1: 8px;--sp-2: 16px;--sp-3: 24px;--sp-4: 32px;--sp-5: 40px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 1px 4px rgba(0,0,0,.04);--shadow-md: 0 2px 8px rgba(0,0,0,.06);--shadow-lg: 0 4px 16px rgba(0,0,0,.08)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:PingFang SC,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-page);color:var(--text-body);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ddd;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#bbb}.card{background:var(--bg-card);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.btn-gold{background:var(--gold);color:#fff;border:none;border-radius:var(--radius-md);padding:8px 24px;cursor:pointer;font-size:14px;transition:background .2s}.btn-gold:hover{background:var(--gold-dark)}.btn-gold:active{background:#a08020}.btn-gold:disabled{background:var(--text-disabled);cursor:not-allowed}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.msg-animate{animation:slideIn .3s ease-out}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}.unread-badge-pulse{animation:pulse 1s ease-in-out infinite}