:root{--sidebar-bg: #0f172a;--sidebar-bg-2: #111827;--primary-blue: #2563eb;--premium-blue: #1d4ed8;--soft-blue: #eff6ff;--card-bg: #ffffff;--page-bg: #f5f7fb;--text-main: #0f172a;--text-sub: #64748b;--success: #16a34a;--warning: #f59e0b;--danger: #dc2626;--purple: #6d5dfc;--border: #e5e7eb;--shadow: 0 12px 32px rgba(15, 23, 42, .08);--soft-shadow: 0 8px 22px rgba(15, 23, 42, .06);font-family:Microsoft YaHei,PingFang SC,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--page-bg);color:var(--text-main)}button,input,select{font:inherit}button{cursor:pointer}.app-shell{min-height:100vh;display:grid;grid-template-columns:244px minmax(0,1fr);background:var(--page-bg)}.sidebar{position:sticky;top:0;height:100vh;padding:28px 18px 22px;color:#dbeafe;background:radial-gradient(circle at 30% 0%,rgba(37,99,235,.2),transparent 30%),linear-gradient(180deg,var(--sidebar-bg),#07111f 72%,var(--sidebar-bg-2));box-shadow:8px 0 28px 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