:root{--bg:#f6f7f9;--bg-soft:#eceef2;--card:#ffffff;--card-hover:#ffffff;--text:#1c1f24;--text-dim:#6b7280;--text-faint:#9aa1ac;--border:#e3e6ea;--accent:#3b6cff;--accent-soft:rgba(59,108,255,0.1);--danger:#e5484d;--shadow:0 1px 2px rgba(16,24,40,0.05),0 8px 24px rgba(16,24,40,0.06);--radius:14px}[data-theme=dark]{--bg:#0f1115;--bg-soft:#171a21;--card:#171a21;--card-hover:#1d212a;--text:#e8eaed;--text-dim:#9aa1ac;--text-faint:#6b7280;--border:#262b35;--accent:#6b8dff;--accent-soft:rgba(107,141,255,0.14);--danger:#ff6369;--shadow:0 1px 2px rgba(0,0,0,0.3),0 8px 24px rgba(0,0,0,0.25)}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,system-ui,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}.shell{max-width:1320px;margin:0 auto;padding:0 20px 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