:root{--sidebar-width: 224px;--topbar-h: 54px;--sidebar-bg: #0D1117;--sidebar-item: #7D8590;--sidebar-hover-bg: rgba(255,255,255,.06);--sidebar-active-bg: rgba(30,122,251,.13);--sidebar-active-border: #1E7AFB;--sidebar-active-color: #60A5FA;--accent: #1E7AFB;--accent-dark: #1565D8;--accent-light: #EFF6FF;--success: #059669;--warning: #D97706;--danger: #DC2626;--bg: #F2F4F8;--surface: #FFFFFF;--border: #E4E8EF;--border-strong: #C9D0DC;--text: #111827;--text-sub: #6B7280;--text-muted: #9CA3AF;--radius: 10px;--radius-sm: 6px;--shadow-xs: 0 1px 2px rgba(0,0,0,.05);--shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 12px rgba(0,0,0,.08);--shadow-lg: 0 8px 28px rgba(0,0,0,.12);--transition: .17s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:\"DM Sans\",-apple-system,BlinkMacSystemFont,\"PingFang SC\",\"Microsoft 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.menu-icon{width:16px;height:16px;flex-shrink:0;opacity:.7;display:flex;align-items:center;justify-content:center}.menu-item:hover{color:#e6edf3;background:var(--sidebar-hover-bg)}.menu-item.active{color:var(--sidebar-active-color);background:var(--sidebar-active-bg);border-left-color:var(--sidebar-active-border);font-weight:500}.menu-item.active .menu-icon{opacity:1}.content{flex:1;margin-left:var(--sidebar-width);padding:1.75rem 2rem 3rem;min-width:0;overflow-x:auto}h2{font-size:1.25rem;font-weight:700;color:var(--text);margin-bottom:1.5rem;display:flex;align-items:center;gap:.5rem}h2:after{content:"";flex:1;height:1px;background:var(--border);margin-left:.75rem}h3{font-size:.9375rem;font-weight:600;color:var(--text);margin-bottom:.75rem}h4{font-size:.875rem;font-weight:600;color:var(--text);margin-bottom:.625rem}.card{background:var(--surface);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow-xs);border:1px solid 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h2{text-align:center;margin-bottom:1.75rem;font-size:1.125rem;font-weight:600;color:#e6edf3}.login-box h2:after{display:none}.login-box .form-group label{color:#ffffffa6}.login-box .form-control{background:#ffffff12;border-color:#ffffff1a;color:#e6edf3}.login-box .form-control:focus{background:#ffffff1a;border-color:#1e7afb;box-shadow:0 0 0 3px #1e7afb33}.login-box .form-control::placeholder{color:#ffffff4d}.login-box .text-muted{color:#ffffff4d}.text-success{color:var(--success)}.text-danger{color:var(--danger)}.text-warning{color:var(--warning)}.text-sub{color:var(--text-sub)}.text-accent{color:var(--accent)}.fw-600{font-weight:600}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-sub)}.empty-state .empty-icon{font-size:2.5rem;margin-bottom:.75rem;opacity:.35}.empty-state 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cubic-bezier(.4,0,.2,1);z-index:99;-webkit-overflow-scrolling:touch}.sidebar.open{transform:translate(0)}.content{margin-left:0;padding:1rem}.navbar{padding-left:1rem}.hamburger{display:flex}.nav-brand{font-size:.875rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}.nav-right{gap:.5rem}.nav-right .nav-user{display:none}.login-box{width:calc(100vw - 2rem);padding:2rem 1.5rem}.table-wrap,.table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}.stats-grid{grid-template-columns:repeat(2,1fr);gap:.75rem}.form-row{flex-direction:column;gap:0}}