:root{--bg:#f3f6f8;--panel:#ffffff;--panel-soft:#f8fafb;--ink:#162521;--text:#24342f;--muted:#6d7d78;--muted-2:#98a39f;--border:#dde5e2;--border-strong:#cbd8d3;--primary:#0b7665;--primary-dark:#075b4e;--primary-soft:#e4f3ef;--accent:#d8a84e;--accent-soft:#fbf3df;--danger:#b94a48;--danger-soft:#fae9e7;--info:#356b9b;--info-soft:#eaf2f8;--shadow-sm:0 1px 2px rgba(24,49,42,.04),0 5px 18px rgba(24,49,42,.035);--shadow-md:0 16px 40px rgba(19,52,44,.09);--radius:14px;--radius-lg:22px;--assistant-bg:#fff;--user-bg:#e6f3ef}*{box-sizing:border-box}body,html{margin:0;min-height:100%}body{font-family:Inter,SF Pro Display,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}button{color:inherit}a{color:var(--primary);text-decoration:none}::selection{background:#bfe3d9;color:var(--ink)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:#cbd8d3;border-radius:999px}::-webkit-scrollbar-track{background:transparent}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseSoft{0%,to{opacity:.45}50%{opacity:1}}@keyframes spin{to{transform:rotate(1turn)}}