:root{--background:#f6f8fb;--surface:#ffffff;--surface-soft:#eef3f8;--text:#17213a;--muted:#647087;--border:#d7e0ec;--primary:#1e325c;--secondary:#35445f;--cta:#3c5994;--cta-strong:#1e325c;--rail-blue:#1e325c;--sidebar-blue:#2a4273;--sidebar-blue-soft:rgba(255,255,255,0.15);--sidebar-blue-strong:rgba(255,255,255,0.24);--sidebar-blue-border:rgba(230,239,255,0.26);--sidebar-blue-text:#f8fbff;--sidebar-blue-muted:rgba(248,251,255,0.76);--success:#166534;--warning:#b45309;--danger:#b91c1c;--radius:8px;--shadow-sm:0 1px 2px rgba(15,23,42,0.08)}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--background);color:var(--text);font-family:PingFang SC,PingFang TC,PingFang HK,Hiragino Sans GB,Microsoft YaHei UI,Microsoft YaHei,Noto Sans KR,Apple SD Gothic Neo,Malgun Gothic,Segoe 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