*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#fff;color:#111;min-height:100vh}#app{max-width:900px;margin:0 auto;padding:1.5rem 1rem;min-height:100vh;display:flex;flex-direction:column}h1{font-size:2rem;margin-bottom:.25rem}h2{font-size:1.4rem;margin-bottom:1rem;color:#111}.subtitle{color:#666;margin-bottom:2rem}.aircraft-list{display:flex;flex-direction:column;gap:.75rem}.aircraft-btn{display:block;padding:1rem 1.25rem;background:#f5f5f5;border:1px solid #ddd;border-radius:8px;color:#111;text-decoration:none;font-size:1.1rem;font-weight:500;transition:background .15s}.aircraft-btn:hover{background:#e8e8e8}.section-header{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}.back-link{color:#06c;text-decoration:none;font-size:.9rem}.aircraft-name{font-weight:600;font-size:1.1rem}.section-nav{display:flex;flex-wrap:wrap;gap:.25rem;margin-bottom:1.5rem;border-bottom:1px solid #ddd;padding-bottom:.5rem}.nav-tab{padding:.35rem .65rem;border-radius:4px;color:#666;text-decoration:none;font-size:.8rem;white-space:nowrap}.nav-tab:hover{color:#111;background:#f0f0f0}.nav-tab.active{color:#fff;background:#333}.checklist-table{width:100%;border-collapse:collapse;margin-bottom:1.5rem}.checklist-table tr{border-bottom:1px solid #eee;cursor:pointer;transition:background .1s}.checklist-table tr:nth-child(2n){background:#f9f9f9}.checklist-table tr:hover{background:#f0f0f0}.checklist-table tr.highlighted{outline:2px solid #0066cc;outline-offset:-2px;background:#e8f0fe}.checklist-table tr.checked{opacity:.5}.checklist-table td{padding:.7rem .5rem;vertical-align:middle}.check-cell{width:2.5rem;text-align:center}.check-cell input[type=checkbox]{width:1.2rem;height:1.2rem;cursor:pointer;accent-color:#0066cc}.action-cell{font-weight:500}.value-cell{text-align:right;color:#06c;font-weight:600;white-space:nowrap}.subsection-header{cursor:default}.subsection-header:hover{background:inherit}.subsection-header td{font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:.04em;color:#555;padding:1rem .5rem .4rem;border-bottom:2px solid #ddd}.section-footer{display:flex;justify-content:space-between;gap:1rem}.nav-btn{padding:.6rem 1.5rem;background:#333;color:#fff;border:none;border-radius:6px;font-size:1rem;cursor:pointer;transition:background .15s}.nav-btn:hover:not(:disabled){background:#555}.nav-btn:disabled{opacity:.3;cursor:not-allowed}.keyboard-hint{font-size:.85rem;color:#888;text-align:center;margin:.5rem 0 1rem}.clear-btn{background:#8b0000}.clear-btn:hover{background:brown}.site-footer{margin-top:auto;padding:1rem 0;border-top:1px solid #eee;text-align:center;font-size:.8rem;color:#999}.site-footer a{color:#06c;text-decoration:none}.site-footer a:hover{text-decoration:underline}