:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#172033;background:#f4f7fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at 100% 0,#2563eb1a,#0000 32rem),linear-gradient(#f7f9fd 0%,#eef3f8 100%);min-width:320px;min-height:100vh;margin:0}button,input,select{font:inherit}button{cursor:pointer}.app-shell{grid-template-columns:280px 1fr;min-height:100vh;display:grid}.sidebar{color:#fff;background:#0f172a;min-height:100vh;padding:24px 18px;position:sticky;top:0}.brand{align-items:center;gap:12px;margin-bottom:28px;padding:10px;display:flex}.brand-mark{background:linear-gradient(135deg,#2563eb,#a855f7);border-radius:14px;place-items:center;width:44px;height:44px;display:grid}.brand-title{font-size:18px;font-weight:800}.brand-subtitle{color:#94a3b8;margin-top:2px;font-size:12px}.nav{gap:6px;display:grid}.nav-link{color:#cbd5e1;border-radius:14px;align-items:center;gap:12px;padding:12px 14px;text-decoration:none;transition:all .18s;display:flex}.nav-link:hover,.nav-link.active{color:#fff;background:#ffffff1a}.main-panel{min-width:0;padding:24px 32px 48px}.topbar{justify-content:space-between;align-items:center;height:88px;display:flex}.topbar h1{margin:0;font-size:26px}.eyebrow{color:#2563eb;letter-spacing:.12em;text-transform:uppercase;margin-bottom:5px;font-size:12px;font-weight:800}.topbar-actions,.page-actions{align-items:center;gap:10px;display:flex}.page{gap:22px;display:grid}.page-header{justify-content:space-between;align-items:flex-start;gap:18px;display:flex}.page-header h2,.page h2{margin:0;font-size:30px}.page-header p,.page p{color:#64748b;margin:6px 0 0}.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;display:grid}.stat-card,.panel{background:#ffffffdb;border:1px solid #94a3b838;border-radius:24px;box-shadow:0 18px 50px #0f172a14}.stat-card{padding:22px}.stat-label{color:#64748b;font-weight:700}.stat-value{margin-top:10px;font-size:42px;font-weight:900}.stat-helper{color:#94a3b8;margin-top:4px;font-size:13px}.stat-card.blue{border-color:#2563eb40}.stat-card.purple{border-color:#a855f740}.stat-card.amber{border-color:#f59e0b40}.stat-card.red{border-color:#ef444440}.panel{padding:22px}.panel-header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;display:flex}.panel-header h3{margin:0;font-size:20px}.status-pill{color:#2563eb;background:#eff6ff;border:1px solid #dbeafe;border-radius:999px;padding:7px 11px;font-size:12px;font-weight:800}.primary-button,.ghost-button{border:0;border-radius:12px;padding:11px 15px;font-weight:800}.primary-button{color:#fff;background:#2563eb}.ghost-button{color:#334155;background:#fff;border:1px solid #e2e8f0}.roadmap{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;display:grid}.roadmap>div{background:#f8fafc;border:1px solid #e2e8f0;border-radius:16px;padding:16px}.roadmap b{margin-bottom:6px;display:block}.roadmap p{margin:0;font-size:13px;line-height:1.55}.filter-bar{grid-template-columns:2fr repeat(4,minmax(130px,1fr));gap:12px;display:grid}.filter-bar input,.filter-bar select,.search-input{color:#172033;background:#fff;border:1px solid #dbe3ef;border-radius:14px;width:100%;padding:12px 14px}.table{border:1px solid #e2e8f0;border-radius:18px;overflow:hidden}.table-head{color:#475569;text-transform:uppercase;letter-spacing:.05em;background:#f8fafc;grid-template-columns:46px 2fr 1fr 1fr .7fr .8fr .8fr 1fr;gap:12px;padding:14px 16px;font-size:12px;font-weight:900;display:grid}.empty-state{text-align:center;padding:44px 20px}.empty-state h4{margin:0;font-size:20px}.empty-state p{max-width:520px;margin:8px auto 0;line-height:1.6}@media (width<=1100px){.app-shell{grid-template-columns:1fr}.sidebar{min-height:auto;position:relative}.stats-grid,.roadmap,.filter-bar{grid-template-columns:1fr}}.user-pill{color:#334155;background:#fff;border:1px solid #e2e8f0;border-radius:999px;padding:7px 11px;font-size:12px;font-weight:800}.bulk-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.danger-button{color:#b91c1c;background:#fee2e2;border:0;border-radius:12px;padding:11px 15px;font-weight:800}.news-table{overflow-x:auto}.news-head,.news-row{grid-template-columns:42px 2.4fr 1.2fr 1fr .55fr .8fr .8fr 1.5fr;min-width:1120px}.drafts-head,.drafts-row{grid-template-columns:minmax(340px,3fr) minmax(180px,1.4fr) minmax(150px,1.1fr) minmax(130px,.9fr) minmax(170px,1.1fr) minmax(150px,1fr);min-width:1040px}.drafts-row>span:first-child{min-width:0}.drafts-row>span:first-child>b{overflow-wrap:normal;word-break:normal;font-size:15px;line-height:1.35}.drafts-row .row-actions{align-items:flex-start}.users-table{overflow-x:auto}.users-head,.users-row{grid-template-columns:1.8fr 1fr 1fr .8fr 1fr 1fr 1fr .8fr;min-width:980px}.muted-note{color:#64748b;font-size:13px;font-weight:600}.bar-list{gap:10px;display:grid}.bar-row{grid-template-columns:160px 1fr 110px;align-items:center;gap:10px;display:grid}.bar-label{color:#334155;text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:800;overflow:hidden}.bar-track{background:#eef2f7;border-radius:999px;height:10px;overflow:hidden}.bar-fill{background:#2563eb;border-radius:999px;height:100%}.bar-value{color:#475569;text-align:right;font-size:12px;font-weight:800}.two-col-grid{grid-template-columns:1fr 1fr;gap:24px;display:grid}.two-col-grid h4{color:#64748b;text-transform:uppercase;letter-spacing:.04em;margin:0 0 10px;font-size:13px}@media (width<=900px){.two-col-grid{grid-template-columns:1fr}}.table-row{border-top:1px solid #e2e8f0;align-items:start;gap:12px;padding:15px 16px;display:grid}.table-row b{color:#0f172a;line-height:1.35;display:block}.table-row small{color:#64748b;margin-top:6px;line-height:1.45;display:block}.mini-button,.mini-danger-button{border:0;border-radius:10px;padding:7px 9px;font-size:12px;font-weight:800}.mini-button{color:#2563eb;background:#eff6ff}.mini-danger-button{color:#b91c1c;background:#fee2e2}.quality-pill,.status-label{border-radius:999px;padding:6px 9px;font-size:12px;font-weight:900;display:inline-flex}.quality-pill.good{color:#047857;background:#d1fae5}.quality-pill.bad{color:#c2410c;background:#ffedd5}.status-label.published{color:#047857;background:#d1fae5}.status-label.hidden{color:#c2410c;background:#ffedd5}.status-label.trash{color:#b91c1c;background:#fee2e2}.status-label.draft{color:#6d28d9;background:#ede9fe}.modal-backdrop{z-index:50;background:#0f172a9e;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.modal-card{background:#fff;border-radius:24px;width:min(920px,100%);max-height:90vh;padding:24px;overflow:auto;box-shadow:0 30px 90px #0f172a59}.modal-header{justify-content:space-between;align-items:start;gap:16px;margin-bottom:20px;display:flex}.modal-header h3{margin:0;font-size:24px}.modal-header p{color:#64748b;margin:6px 0 0}.form-grid{grid-template-columns:1fr 1fr;gap:14px;display:grid}.form-grid label{color:#334155;gap:7px;font-weight:800;display:grid}.form-grid label.wide{grid-column:1/-1}.form-grid input,.form-grid select,.form-grid textarea{color:#172033;background:#fff;border:1px solid #dbe3ef;border-radius:14px;width:100%;padding:12px 14px}.form-grid textarea{resize:vertical;min-height:120px}.modal-actions{justify-content:flex-end;margin-top:18px;display:flex}@media (width<=900px){.form-grid{grid-template-columns:1fr}}.quick-filter-row{flex-wrap:wrap;align-items:center;gap:8px;margin-top:-8px;display:flex}.filter-chip{color:#2563eb;background:#eff6ff;border:1px solid #dbeafe;border-radius:999px;padding:8px 12px;font-size:12px;font-weight:900}.filter-chip:hover{background:#dbeafe}.filter-divider{background:#cbd5e1;width:1px;height:28px;margin:0 4px}.active-filter-note{color:#64748b;font-size:12px;font-weight:800}.cms-summary-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;display:grid}.cms-summary-card{background:#ffffffe0;border:1px solid #94a3b840;border-radius:18px;padding:15px;box-shadow:0 12px 36px #0f172a0f}.cms-summary-card span{color:#64748b;text-transform:uppercase;letter-spacing:.04em;font-size:12px;font-weight:900;display:block}.cms-summary-card b{color:#0f172a;margin-top:8px;font-size:26px;display:block}@media (width<=1100px){.cms-summary-grid{grid-template-columns:1fr}}.engine-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.engine-grid label{color:#334155;gap:8px;font-weight:900;display:grid}.engine-grid select{color:#172033;background:#fff;border:1px solid #dbe3ef;border-radius:14px;width:100%;padding:12px 14px}.publish-action-row{flex-wrap:wrap;gap:14px;margin-top:18px;display:flex}.big-action{padding:15px 18px;font-size:16px}.publish-button{color:#fff;background:linear-gradient(135deg,#2563eb,#7c3aed);border:0;border-radius:12px;padding:11px 15px;font-weight:900}.safety-note{color:#334155;background:#eff6ff;border:1px solid #dbeafe;border-radius:16px;margin-top:18px;padding:14px;line-height:1.55}.result-list{gap:10px;margin-top:18px;display:grid}.result-row{background:#f8fafc;border:1px solid #e2e8f0;border-radius:14px;grid-template-columns:2fr 1fr .8fr .7fr;align-items:center;gap:12px;padding:12px;display:grid}.runs-head,.runs-row{grid-template-columns:2fr 1.3fr 1fr .8fr .8fr .8fr .8fr .8fr;min-width:980px}@media (width<=900px){.engine-grid,.result-row{grid-template-columns:1fr}}.importer-grid{grid-template-columns:1.5fr 1fr 1.5fr;gap:14px;display:grid}.importer-grid label,.replace-toggle{color:#334155;gap:8px;font-weight:900;display:grid}.importer-grid input,.importer-grid select{color:#172033;background:#fff;border:1px solid #dbe3ef;border-radius:14px;width:100%;padding:12px 14px}.replace-toggle{align-items:center;gap:10px;margin-top:16px;display:flex}.replace-toggle input{width:18px;height:18px}.chapter-summary-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.chapter-summary-pill{background:#f8fafc;border:1px solid #e2e8f0;border-radius:16px;padding:13px}.chapter-summary-pill b{color:#0f172a;font-size:13px;display:block}.chapter-summary-pill span{color:#64748b;margin-top:4px;font-size:12px;font-weight:800;display:block}.reverse-import-table{overflow-x:auto}.reverse-import-head,.reverse-import-row{grid-template-columns:42px .7fr 1.3fr 3fr 1.4fr;min-width:1100px}@media (width<=1000px){.importer-grid,.chapter-summary-list{grid-template-columns:1fr}}.manual-chapter-panel{background:#fff;border:1px solid #e2e8f0;border-radius:18px;margin-top:16px;padding:16px}.manual-chapter-panel h4{color:#0f172a;margin:0;font-size:16px;font-weight:900}.manual-chapter-panel p{color:#64748b;margin:5px 0 0;font-size:12px;font-weight:800}.manual-chapter-grid{grid-template-columns:.7fr 2fr .7fr .7fr auto;align-items:end;gap:12px;margin-top:14px;display:grid}.manual-chapter-grid label{color:#334155;gap:7px;font-size:12px;font-weight:900;display:grid}.manual-chapter-grid input{color:#172033;background:#fff;border:1px solid #dbe3ef;border-radius:14px;width:100%;padding:11px 12px}.manual-chapter-button{white-space:nowrap;height:43px}@media (width<=1100px){.manual-chapter-grid{grid-template-columns:1fr}}.manual-chapter-grid{grid-template-columns:1fr .7fr 2fr .7fr .7fr auto}.manual-chapter-grid select{color:#172033;background:#fff;border:1px solid #dbe3ef;border-radius:14px;width:100%;padding:11px 12px}.remove-preview-panel{background:#fff7f7;border:1px solid #fecaca;border-radius:18px;margin-top:16px;padding:16px}.remove-preview-panel h4{color:#7f1d1d;margin:0;font-size:16px;font-weight:900}.remove-preview-panel p{color:#991b1b;margin:5px 0 0;font-size:12px;font-weight:800}.remove-preview-grid{grid-template-columns:.8fr .8fr auto .8fr auto 1fr auto;align-items:end;gap:12px;margin-top:14px;display:grid}.remove-preview-grid label{color:#334155;gap:7px;font-size:12px;font-weight:900;display:grid}.remove-preview-grid input,.remove-preview-grid select{color:#172033;background:#fff;border:1px solid #fecaca;border-radius:14px;width:100%;padding:11px 12px}.danger-soft-button{color:#991b1b;white-space:nowrap;background:#fee2e2;border:1px solid #fecaca;border-radius:14px;height:43px;padding:0 14px;font-weight:900}.danger-soft-button:hover{background:#fecaca}@media (width<=1200px){.manual-chapter-grid,.remove-preview-grid{grid-template-columns:1fr}}.subject-manager-panel{background:#eff6ff;border:1px solid #dbeafe;border-radius:18px;margin-top:16px;padding:16px}.subject-manager-panel h4{color:#0f172a;margin:0;font-size:16px;font-weight:900}.subject-manager-panel p{color:#475569;margin:5px 0 0;font-size:12px;font-weight:800;line-height:1.4}.subject-manager-grid{grid-template-columns:1fr auto;gap:12px;margin-top:14px;display:grid}.subject-manager-grid input{color:#172033;background:#fff;border:1px solid #bfdbfe;border-radius:14px;width:100%;padding:11px 12px;font-weight:800}.subject-chip-row{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.subject-chip{color:#2563eb;background:#fff;border:1px solid #bfdbfe;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:900}.subject-chip.active{color:#fff;background:#2563eb;border-color:#2563eb}@media (width<=900px){.subject-manager-grid{grid-template-columns:1fr}}.bank-filter-grid{grid-template-columns:2fr 1.1fr .8fr .9fr .7fr .7fr;gap:12px;margin-top:14px;display:grid}.bank-filter-grid input,.bank-filter-grid select{color:#172033;background:#fff;border:1px solid #dbe3ef;border-radius:14px;width:100%;padding:11px 12px;font-weight:800}.bank-actions{flex-wrap:wrap;align-items:center;gap:10px;margin:16px 0;display:flex}.reverse-bank-table{overflow-x:auto}.reverse-bank-head,.reverse-bank-row{grid-template-columns:42px .7fr 1fr 1.2fr 3fr 1.4fr .8fr 1.2fr;min-width:1300px}.published-pill,.hidden-pill{border-radius:999px;padding:6px 10px;font-size:11px;font-weight:900;display:inline-flex}.published-pill{color:#15803d;background:#dcfce7}.hidden-pill{color:#991b1b;background:#fee2e2}.row-actions{flex-wrap:wrap;gap:7px;display:flex}.mini{height:auto!important;padding:7px 9px!important;font-size:11px!important}@media (width<=1000px){.bank-filter-grid{grid-template-columns:1fr}}.selection-cleanup-panel{background:#fff7f7}.selection-cleanup-grid{grid-template-columns:auto auto 1.7fr auto 1.4fr auto;align-items:center;gap:12px;margin-top:14px;display:grid}.selection-cleanup-grid select{color:#172033;background:#fff;border:1px solid #fecaca;border-radius:14px;width:100%;padding:11px 12px;font-weight:800}.selection-cleanup-grid button:disabled{opacity:.45;cursor:not-allowed}@media (width<=1200px){.selection-cleanup-grid{grid-template-columns:1fr}}.waiting-preview-panel{background:#f8fbff;border:1px dashed #bfdbfe;border-radius:18px;margin-top:16px;padding:18px}.waiting-preview-panel h4{color:#0f172a;margin:0;font-size:16px;font-weight:900}.waiting-preview-panel p{color:#64748b;margin:6px 0 0;font-size:13px;font-weight:800;line-height:1.45}.waiting-preview-steps{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.waiting-preview-steps span{color:#2563eb;background:#eff6ff;border:1px solid #dbeafe;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:900}.challenge-ai-grid{grid-template-columns:repeat(3,minmax(180px,1fr));gap:12px;margin-top:14px;display:grid}.challenge-ai-grid label,.challenge-ai-upload-row label,.challenge-ai-concept{color:#334155;gap:7px;font-size:12px;font-weight:900;display:grid}.challenge-ai-grid select,.challenge-ai-upload-row input,.challenge-ai-concept textarea{color:#172033;background:#fff;border:1px solid #dbe3ef;border-radius:14px;width:100%;padding:11px 12px;font-weight:800}.challenge-ai-concept{margin-top:16px}.challenge-ai-concept textarea{resize:vertical;min-height:130px;line-height:1.45}.challenge-ai-meta-row{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px;display:grid}.challenge-ai-meta-card{background:#f8fafc;border:1px solid #e2e8f0;border-radius:18px;padding:13px}.challenge-ai-meta-card span{color:#64748b;margin-bottom:5px;font-size:11px;font-weight:900;display:block}.challenge-ai-meta-card b{color:#0f172a;font-size:13px;font-weight:900}.challenge-ai-upload-row{grid-template-columns:minmax(220px,.9fr) 2fr;align-items:end;gap:12px;margin-top:14px;display:grid}.challenge-ai-table{overflow-x:auto}.challenge-ai-head,.challenge-ai-row{grid-template-columns:42px 1.1fr 2.3fr 2.1fr 1.6fr .7fr;min-width:1180px}@media (width<=1100px){.challenge-ai-grid,.challenge-ai-meta-row,.challenge-ai-upload-row{grid-template-columns:1fr}}.challenge-bank-filter-grid{grid-template-columns:2fr 1fr .8fr .7fr .8fr;gap:12px;margin-top:14px;display:grid}.challenge-bank-filter-grid input,.challenge-bank-filter-grid select{color:#172033;background:#fff;border:1px solid #dbe3ef;border-radius:14px;width:100%;padding:11px 12px;font-weight:800}.challenge-bank-table{overflow-x:auto}.challenge-bank-head,.challenge-bank-row{grid-template-columns:42px 1.2fr 2.7fr 2.2fr 1.7fr .8fr 1fr;min-width:1350px}@media (width<=1100px){.challenge-bank-filter-grid{grid-template-columns:1fr}}.challenge-subject-admin-panel{background:#eff6ff;border:1px solid #dbeafe;border-radius:18px;margin-top:14px;padding:14px}.challenge-subject-admin-panel h4{color:#0f172a;margin:0;font-size:15px;font-weight:900}.challenge-subject-admin-panel p{color:#475569;margin:5px 0 12px;font-size:12px;font-weight:800;line-height:1.35}.challenge-subject-add-row{grid-template-columns:1fr auto;align-items:center;gap:10px;display:grid}.challenge-subject-add-row input{color:#172033;background:#fff;border:1px solid #bfdbfe;border-radius:14px;width:100%;padding:11px 12px;font-weight:800}.challenge-subject-chip-row{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.challenge-subject-chip{color:#2563eb;cursor:pointer;background:#fff;border:1px solid #bfdbfe;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:900}.challenge-subject-chip.active{color:#fff;background:#2563eb;border-color:#2563eb}@media (width<=900px){.challenge-subject-add-row{grid-template-columns:1fr}}