:root{--color-primary: #1d4ed8;--color-primary-hover: #1e40af;--color-primary-light: #eff6ff;--color-primary-dark: #172554;--color-accent: #059669;--color-accent-light: #ecfdf5;--color-danger: #dc2626;--color-danger-light: #fef2f2;--color-warning: #d97706;--color-warning-light: #fffbeb;--color-info: #2563eb;--color-info-light: #eff6ff;--color-success: #059669;--color-success-light: #ecfdf5;--color-bg: #f6f8fb;--color-surface: #ffffff;--color-surface-raised: #ffffff;--color-surface-hover: #f8fafc;--color-border: #d8e0ea;--color-border-light: #edf1f6;--color-text-primary: #111827;--color-text-secondary: #4b5563;--color-text-tertiary: #8a94a6;--color-text-inverse: #ffffff;--color-sidebar-bg: #0b1220;--color-sidebar-bg-hover: rgba(255, 255, 255, .07);--color-sidebar-bg-active: #2563eb;--color-sidebar-text: #b8c2d6;--color-sidebar-text-active: #ffffff;--font-sans: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", "SF Mono", 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rgba(255,255,255,.08);min-height:76px;flex-shrink:0}.sidebar-logo{width:40px;height:40px;background:linear-gradient(145deg,#2563eb,#059669);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;box-shadow:0 14px 30px #2563eb52}.sidebar-brand{font-size:15px;font-weight:700;color:var(--color-sidebar-text-active);line-height:1.3}.sidebar-brand-sub{font-size:12px;color:#94a3b8;margin-top:2px}.sidebar-nav{flex:1;padding:16px 12px 20px;display:flex;flex-direction:column;gap:14px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:rgba(148,163,184,.45) transparent}.sidebar-nav::-webkit-scrollbar{width:8px}.sidebar-nav::-webkit-scrollbar-thumb{background:#94a3b873;border-radius:999px;border:2px solid var(--color-sidebar-bg)}.nav-section{display:flex;flex-direction:column;gap:4px}.nav-section-label{font-size:var(--font-size-xs);letter-spacing:0;padding:0 12px 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svg{width:18px;height:18px;flex-shrink:0}.nav-item-icon{width:28px;height:28px;border-radius:var(--radius-md);display:inline-flex;align-items:center;justify-content:center;color:#93a4bf;background:#ffffff12;flex-shrink:0}.nav-item:hover .nav-item-icon,.nav-item.active .nav-item-icon{color:#fff;background:#ffffff29}.nav-item-label{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-footer{padding:12px;border-top:1px solid rgba(255,255,255,.08);flex-shrink:0}.nav-item.logout{color:#fecaca;opacity:1}.nav-item.logout:hover{background:#dc262621}.sidebar-backdrop{display:none}.main-content{flex:1;margin-left:var(--sidebar-width);display:flex;flex-direction:column;min-height:100vh}.topbar{height:var(--topbar-height);background:#ffffffdb;border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;padding:0 32px;position:sticky;top:0;z-index:20;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 1px 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