:root{--bg:#f4f4f6;--card:#fff;--ink:#111113;--muted:#6b6b73;--line:#ececef;--soft:#f3f3f5;--green:#16a34a;--radius:14px;--danger:#dc2626;--danger-soft:#fef2f2;--warn:#b45309;--warn-soft:#fffbeb;--info:#1d4ed8;--info-soft:#eff6ff}*{box-sizing:border-box}html,body{height:100%;margin:0}body{background:var(--bg);color:var(--ink);font:14px/1.45 ui-sans-serif,system-ui,-apple-system,PingFang SC,Noto Sans SC,sans-serif}#root{min-height:100%}button,input{font:inherit}.app-shell{min-height:100vh;display:flex}.btn{cursor:pointer;color:#111;background:#fff;border:1px solid #e4e4e7;border-radius:999px;align-items:center;gap:6px;padding:8px 14px;display:inline-flex}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.primary{color:#fff;background:#111;border-color:#111}.iconbtn{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:999px;padding:6px 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