#app{height:100%}:root{--primary:#4f46e5;--primary-light:#6366f1;--primary-bg:#eef2ff;--bg:#f9fafb;--white:#fff;--border:#e5e7eb;--text-primary:#111827;--text-secondary:#6b7280;--text-muted:#9ca3af;--danger:#ef4444;--success:#10b981;--sidebar-width:300px;--chat-bg:#f3f4f6;--user-bubble:#4f46e5;--assistant-bubble:#fff;--shadow:0 1px 3px rgba(0,0,0,.08);--radius:12px;--radius-sm:8px}*{margin:0;padding:0;box-sizing:border-box}#app,body,html{height:100%;width:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:14px;color:var(--text-primary);background:var(--bg);overflow:hidden}button{background:none;cursor:pointer}button,input,textarea{border:none;font-family:inherit;font-size:inherit}input,textarea{outline:none}a{color:var(--primary);text-decoration:none}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:2px}.fade-enter-active,.fade-leave-active{transition:opacity .2s ease}.fade-enter-from,.fade-leave-to{opacity:0}