:root{font-family:system-ui,-apple-system,'Segoe UI',sans-serif;color:#17243b;background:#f3f6fb}*{box-sizing:border-box}body{margin:0}a{color:#1d4ed8}header{background:#fff;border-bottom:1px solid #dce5f1}.wrap{max-width:1120px;margin:auto;padding:18px 22px}.top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.brand{font-size:1.25rem;font-weight:750;text-decoration:none}nav{display:flex;gap:12px;align-items:center;flex-wrap:wrap}nav a{text-decoration:none}h1{font-size:1.8rem}h2{font-size:1.25rem}h3{font-size:1.05rem}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}.card{background:white;border:1px solid #e2e8f0;border-radius:14px;padding:20px;margin:16px 0;box-shadow:0 3px 16px #14294d0a}.big{font-size:2rem;font-weight:750}.muted{color:#64748b;font-size:.93rem}.question{font-size:1.8rem;font-weight:700;margin:22px 0}.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}label{display:block;margin:12px 0 6px;font-weight:600}input:not([type=hidden]):not([type=checkbox]),select,textarea{display:block;width:100%;padding:11px 12px;border:1px solid #bdc9db;border-radius:8px;font:inherit;background:#fff;color:#17243b}input[type=checkbox]{width:auto}button,.btn{display:inline-block;border:0;background:#1d4ed8;color:white;padding:11px 16px;border-radius:9px;font:inherit;font-weight:650;cursor:pointer;text-decoration:none;margin:8px 5px 8px 0}button:hover,.btn:hover{background:#1e40af;color:white}.small{padding:7px 11px;font-size:.9rem}.danger{background:#b91c1c}.linkbtn{background:transparent;color:#1d4ed8;padding:0;margin:0}.inline{display:inline}.notice,.success,.error{padding:16px;border-radius:10px;margin:15px 0}.notice{background:#eaf2ff}.success{background:#e6f6ec;color:#14532d}.error{background:#fff0f0;color:#991b1b}.tablewrap{overflow:auto}table{border-collapse:collapse;width:100%}td,th{padding:10px;border-bottom:1px solid #e2e8f0;text-align:left}footer{color:#64748b;font-size:.9rem}.motivation-tile{border:1px solid #dbe7f6;border-radius:12px;background:#f7faff;padding:14px;display:flex;flex-direction:column;gap:7px}.motivation-tile strong{font-size:1.65rem;color:#1d4ed8}.badge-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));gap:12px}.motivation-badge{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;border-radius:12px;padding:14px;border:1px solid #e2e8f0}.motivation-badge span{font-size:2rem}.motivation-badge small{color:#64748b}.motivation-badge.earned{background:#fffbeb;border-color:#fcd34d}.motivation-badge.locked{opacity:.45;filter:grayscale(1)}@media(max-width:600px){.wrap{padding:12px}.card{padding:15px}.question{font-size:1.4rem}}

/* Version 54: responsive, keyboard-accessible multilevel navigation */
.primary-nav{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.nav-dropdown{position:relative}
.nav-dropdown summary{list-style:none;cursor:pointer;padding:9px 12px;border-radius:9px;font-weight:650;color:#17243b}
.nav-dropdown summary::-webkit-details-marker{display:none}
.nav-dropdown summary::after{content:' ▾';color:#64748b}
.nav-dropdown[data-current="1"]>summary,.nav-dropdown[open]>summary{background:#eaf2ff;color:#1d4ed8}
.nav-submenu{position:absolute;top:100%;left:0;min-width:245px;max-width:min(90vw,360px);z-index:50;background:#fff;border:1px solid #dce5f1;border-radius:10px;padding:7px;box-shadow:0 12px 30px #14294d24;display:flex;flex-direction:column;gap:2px}
.nav-submenu a{padding:9px 11px;border-radius:7px;display:block;color:#17243b}
.nav-submenu a:hover,.nav-submenu a[aria-current="page"]{background:#eaf2ff;color:#1d4ed8}
.nav-dropdown summary:focus-visible,.nav-submenu a:focus-visible{outline:3px solid #f59e0b;outline-offset:2px}
.logged-in-user,.app-version{font-size:.84rem;white-space:nowrap}
@media(max-width:700px){.top{align-items:flex-start}.primary-nav{width:100%;align-items:stretch;gap:5px}.nav-dropdown{width:100%}.nav-dropdown summary{background:#f3f6fb}.nav-submenu{position:static;min-width:0;max-width:none;box-shadow:none;margin:3px 0 6px 12px}.logged-in-user{width:100%}}

.admin-link-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}.admin-link{display:block;background:#f3f6fb;padding:14px;border-radius:10px;text-decoration:none;font-weight:600}.admin-link:hover{background:#eaf2ff}

/* Version 55: consolidated content hierarchy */
.content-tree{border:1px solid #dce5f1;border-radius:10px;margin:10px 0;padding:12px}.content-tree>summary{cursor:pointer;font-weight:700}.content-tree-inner{padding:8px 4px 4px 18px}.content-tree-row{padding:8px 0;border-bottom:1px solid #edf1f7}.content-tree-row a{margin-right:8px}.content-add-form{margin:12px 0;max-width:460px}.content-add-form input{max-width:460px}