.yp-wrap{max-width:1000px;margin:30px auto}.yp-intro{padding:12px 16px;background:#f3f6f8;border-left:4px solid #2271b1}.yp-question{background:#fff;border:1px solid #ddd;border-radius:8px;padding:24px;margin:24px 0}.yp-question h2,.yp-question h3{margin-top:0}.yp-question textarea{width:100%;box-sizing:border-box;padding:12px;border:1px solid #bbb;border-radius:5px;resize:vertical}.yp-question button{margin-top:12px;padding:10px 18px;border:0;border-radius:5px;background:#2271b1;color:#fff;cursor:pointer}.yp-due,.yp-saved{font-size:.9em;color:#666}.yp-success,.yp-notice{padding:12px 16px;margin:15px 0;background:#eef8ee;border:1px solid #b8d8b8;border-radius:5px}.yp-category-heading{margin:32px 0 8px;padding-bottom:6px;border-bottom:2px solid #2271b1}.yp-feedback{margin-top:14px;padding:12px 16px;background:#fff8e5;border-left:4px solid #dba617;border-radius:5px}.yp-calendar-el{background:#fff;padding:10px;margin-bottom:10px}
.yp-breadcrumbs{margin:0 0 20px;font-size:.95em;color:#666}.yp-breadcrumbs a{color:#2271b1;text-decoration:none}.yp-breadcrumbs a:hover{text-decoration:underline}.yp-crumb-sep{margin:0 6px;color:#aaa}
.yp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}.yp-book-card{display:block;background:#fff;border:1px solid #ddd;border-top:6px solid #4a5568;border-radius:6px;padding:18px;text-decoration:none;color:#222;box-shadow:1px 2px 5px rgba(0,0,0,.08);transition:transform .12s ease,box-shadow .12s ease}.yp-book-card:hover{transform:translateY(-3px);box-shadow:2px 6px 12px rgba(0,0,0,.14);color:#222}.yp-book-card h3{margin:0 0 8px;font-size:1.05em}.yp-book-desc{margin:0 0 10px;font-size:.9em;color:#666}.yp-book-count{display:inline-block;font-size:.8em;background:#f0f0f0;padding:3px 9px;border-radius:12px;color:#555}
.yp-layout{display:flex;gap:26px;align-items:flex-start}.yp-main{flex:1;min-width:0}.yp-page-sidebar,.yp-tree-sidebar{flex:0 0 240px;background:#fff;border:1px solid #ddd;border-radius:6px;padding:14px;position:sticky;top:20px;max-height:85vh;overflow-y:auto}.yp-page-sidebar h4{margin:0 0 10px;padding-bottom:8px;border-bottom:1px solid #eee;font-size:.85em;text-transform:uppercase;letter-spacing:.5px;color:#888}.yp-page-sidebar ul{list-style:none;margin:0;padding:0}.yp-page-sidebar li{margin:0 0 6px}.yp-page-sidebar a{display:block;padding:6px 8px;border-radius:4px;color:#333;text-decoration:none;font-size:.92em}.yp-page-sidebar a:hover{background:#f3f6f8;color:#2271b1}.yp-page-sidebar-empty{color:#999;font-size:.9em;padding:6px 8px}
.yp-tree-group{border-left:4px solid #ccc;border-left-style:solid;padding-left:10px;margin:0 0 18px}.yp-tree-group:last-child{margin-bottom:0}.yp-tree-group-label{font-weight:700;font-size:.85em;text-transform:uppercase;letter-spacing:.4px;color:#555;margin-bottom:6px}.yp-tree-cats{list-style:none;margin:0;padding:0}.yp-tree-cat{border-left:3px solid #ccc;margin:2px 0}.yp-tree-cat>a{display:block;padding:5px 10px;color:#333;text-decoration:none;font-size:.9em;border-radius:0 4px 4px 0}.yp-tree-cat>a:hover{background:#f3f6f8;color:#2271b1}.yp-tree-active>a{background:#eaf1f8;font-weight:600;color:#2271b1}.yp-tree-cat-empty{color:#999;font-size:.85em;padding:4px 10px}
.yp-tree-pages{list-style:none;margin:4px 0 8px 12px;padding:0 0 0 10px;border-left:2px dotted #ddd}.yp-tree-pages li{margin:2px 0}.yp-tree-pages a{display:block;padding:4px 10px;font-size:.85em;color:#555;text-decoration:none;border-radius:4px}.yp-tree-pages a:hover{background:#f7f9fa;color:#2271b1}.yp-tree-pages-empty{color:#999;font-size:.82em;padding:4px 10px}
@media (max-width:640px){.yp-layout{flex-direction:column}.yp-page-sidebar,.yp-tree-sidebar{position:static;width:100%;flex:none;max-height:none;box-sizing:border-box}}