:root{--color-bg: #f8fafc;--color-surface: #ffffff;--color-border: #e2e8f0;--color-text: #1e293b;--color-text-muted: #64748b;--color-primary: #4f46e5;--color-primary-hover: #4338ca;--color-danger: #dc2626;--color-success-bg: #dcfce7;--color-success-text: #166534;--color-draft-bg: #fef3c7;--color-draft-text: #92400e;--radius: 8px;--spacing-1: 4px;--spacing-2: 8px;--spacing-3: 12px;--spacing-4: 16px;--spacing-6: 24px;--spacing-8: 32px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}body{margin:0;font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);font-size:15px;line-height:1.5}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{margin:0 0 var(--spacing-4);font-weight:600}.admin-shell{min-height:100vh}.admin-topbar{display:flex;align-items:center;gap:var(--spacing-3);padding:var(--spacing-3) 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ease;z-index:20;display:flex;flex-direction:column;gap:var(--spacing-1);overflow-x:hidden}.admin-sidebar.is-open{transform:translate(0)}.admin-sidebar__close{display:inline-flex;align-self:flex-end;background:none;border:none;cursor:pointer;color:var(--color-text-muted);padding:var(--spacing-2);margin-bottom:var(--spacing-2)}.admin-sidebar__nav{display:flex;flex-direction:column;gap:var(--spacing-1);flex:1}.admin-sidebar a{display:flex;align-items:center;gap:var(--spacing-3);padding:var(--spacing-2) var(--spacing-3);border-radius:var(--radius);color:var(--color-text-muted);font-weight:500;white-space:nowrap}.admin-sidebar a svg{flex-shrink:0}.admin-sidebar a.active,.admin-sidebar a:hover{background:var(--color-bg);color:var(--color-text);text-decoration:none}.admin-sidebar__section-toggle{display:flex;align-items:center;gap:var(--spacing-3);width:100%;padding:var(--spacing-2) 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768px){.admin-topbar__menu-toggle,.admin-sidebar__close{display:none}.admin-sidebar{position:sticky;top:0;height:100vh;transform:none}.admin-sidebar-backdrop{display:none}.admin-sidebar__collapse-toggle{display:flex;align-items:center;gap:var(--spacing-3);padding:var(--spacing-2) var(--spacing-3);border:none;background:none;color:var(--color-text-muted);cursor:pointer;border-top:1px solid var(--color-border);margin-top:auto;white-space:nowrap}.admin-sidebar__collapse-toggle:hover{color:var(--color-text)}.admin-sidebar.is-collapsed{width:64px}.admin-sidebar.is-collapsed .admin-sidebar__label{display:none}.admin-sidebar.is-collapsed a,.admin-sidebar.is-collapsed .admin-sidebar__collapse-toggle{justify-content:center}.admin-content{padding:var(--spacing-8)}}.page-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--spacing-3);margin-bottom:var(--spacing-6)}.page-header 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var(--color-border);border-radius:var(--radius);overflow-x:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:var(--spacing-3) var(--spacing-4);border-bottom:1px solid var(--color-border);font-size:14px}.table th{color:var(--color-text-muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em}.table tbody tr:last-child td{border-bottom:none}.table tbody tr:hover{background:var(--color-bg)}.table-actions{display:flex;gap:var(--spacing-2);align-items:center;justify-content:flex-end}.form-field{margin-bottom:var(--spacing-4)}.form-field label{display:block;margin-bottom:var(--spacing-1);font-size:13px;font-weight:600;color:var(--color-text-muted)}.form-field input,.form-field textarea,.form-field select{width:100%;padding:var(--spacing-2) var(--spacing-3);border:1px solid var(--color-border);border-radius:var(--radius);font-size:14px;font-family:inherit;background:var(--color-surface);color:var(--color-text)}.form-field input:focus,.form-field textarea:focus,.form-field select:focus{outline:2px solid var(--color-primary);outline-offset:1px}.form-hint{color:var(--color-text-muted);font-size:13px;margin:calc(var(--spacing-4) * -1) 0 var(--spacing-4)}.checkbox-list{display:flex;flex-direction:column;gap:var(--spacing-2);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--spacing-3);max-height:260px;overflow-y:auto}.checkbox-list__item{display:flex;align-items:center;gap:var(--spacing-2);font-weight:400;padding:2px 0}.checkbox-list__item--child{margin-left:var(--spacing-6);color:var(--color-text-muted)}.checkbox-list__item input{width:auto}.richtext{border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden}.richtext__toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:var(--spacing-1);padding:var(--spacing-2);background:var(--color-bg);border-bottom:1px solid var(--color-border)}.richtext__toolbar select,.richtext__toolbar 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var(--color-border);border-radius:var(--radius);background:var(--color-surface);color:var(--color-text)}.richtext__content{padding:var(--spacing-3);font-size:14px;line-height:1.6;background:var(--color-surface);color:var(--color-text);overflow-y:auto}.richtext__content:focus{outline:none}.richtext__html-source{display:block;width:100%;padding:var(--spacing-3);font-size:13px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;line-height:1.6;background:var(--color-surface);color:var(--color-text);border:none;resize:vertical}.richtext__html-source:focus{outline:none}.richtext__content table{border-collapse:collapse;width:100%;margin:var(--spacing-2) 0}.richtext__content table td,.richtext__content table th{border:1px solid var(--color-border);padding:var(--spacing-2)}.image-upload-field{margin-bottom:var(--spacing-6);padding:var(--spacing-4);border:1px dashed 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10px;border-radius:999px;font-size:12px;font-weight:600}.badge--published{background:var(--color-success-bg);color:var(--color-success-text)}.badge--draft{background:var(--color-draft-bg);color:var(--color-draft-text)}.badge--new{background:#dbeafe;color:#1e40af}.badge--read{background:#f1f5f9;color:#475569}.badge--archived{background:#f1f5f9;color:#94a3b8}.empty-state{text-align:center;padding:var(--spacing-8);color:var(--color-text-muted)}.auth-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-4);background:var(--color-bg)}.auth-card{width:100%;max-width:360px}.error-text{color:var(--color-danger);font-size:14px;margin-bottom:var(--spacing-4)}.success-text{color:var(--color-success-text);font-size:14px;margin-bottom:var(--spacing-4)}.form-section{margin-bottom:var(--spacing-8)}.tabs{display:flex;gap:var(--spacing-2);border-bottom:1px solid var(--color-border);margin-bottom:var(--spacing-6);overflow-x:auto}.tab{padding:var(--spacing-2) 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