.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.feature-card{background:#fff;border:1px solid #dfe7f2;border-radius:18px;padding:18px;box-shadow:0 6px 20px rgba(20,50,90,.06)}.feature-card h3{margin:8px 0 6px}.feature-card p{margin:0 0 12px;color:#64748b}.feature-icon{font-size:30px}.feature-chip{display:inline-flex;padding:5px 9px;border-radius:999px;background:#eef5ff;color:#123b6d;font-size:12px;font-weight:700}.hub-hero{background:linear-gradient(135deg,#123b6d,#2867a8);color:#fff;border-radius:22px;padding:24px;margin-bottom:18px}.hub-hero p{opacity:.9}.book-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}.book-card{border:1px solid #e2e8f0;border-radius:16px;padding:16px;background:#fff}.book-cover{height:150px;border-radius:12px;background:#edf4fb;display:flex;align-items:center;justify-content:center;font-size:54px;margin-bottom:12px}.lesson-kind{font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:#64748b}.score-ring{font-size:34px;font-weight:800;color:#123b6d}.metric-row{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid #edf1f5}.streak{font-size:24px;font-weight:800}.empty-state{text-align:center;padding:30px;color:#64748b}.quick-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.simple-table{width:100%;border-collapse:collapse}.simple-table th,.simple-table td{text-align:left;padding:10px;border-bottom:1px solid #e5e7eb}.badge-success{color:#166534;background:#dcfce7;padding:4px 8px;border-radius:999px;font-size:12px;font-weight:700}.badge-lock{color:#92400e;background:#fef3c7;padding:4px 8px;border-radius:999px;font-size:12px;font-weight:700}@media(max-width:700px){.hub-hero{padding:18px}.feature-grid,.book-grid{grid-template-columns:1fr}}