.nav-login{border:0;background:transparent;color:var(--ink);padding:0;font:inherit;font-size:.9rem;font-weight:700;cursor:pointer}.nav-login:hover{color:var(--orange)}
.catalog-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:34px;align-items:start}
.course-sidebar{position:sticky;top:104px;border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden;box-shadow:0 12px 32px rgba(0,37,95,.07)}
.sidebar-heading{display:flex;align-items:center;justify-content:space-between;padding:20px;border-bottom:1px solid var(--line);color:var(--navy);font-size:.9rem;font-weight:800}.sidebar-toggle{display:none;border:0;background:var(--cloud);color:var(--navy);padding:8px 11px;border-radius:6px;font:inherit;font-size:.76rem;font-weight:800;cursor:pointer}
.sidebar-content{padding:18px}.course-sidebar .search{width:100%;margin-bottom:24px}.course-sidebar .search input{font-size:.8rem}.sidebar-group{padding:20px 0;border-top:1px solid var(--line)}.sidebar-group>strong{display:block;margin-bottom:13px;color:var(--ink);font-size:.75rem;letter-spacing:.04em;text-transform:uppercase}
.course-sidebar .filters{display:grid;gap:4px}.course-sidebar .filter{width:100%;display:flex;align-items:center;justify-content:space-between;border:0;border-radius:7px;padding:11px 10px;text-align:left;background:transparent;color:var(--muted);font-size:.78rem}.course-sidebar .filter:hover,.course-sidebar .filter.active{background:#eaf2f8;color:var(--navy)}.course-sidebar .filter.active{box-shadow:inset 3px 0 0 var(--orange)}.course-sidebar .filter b{font-size:.68rem;color:var(--orange)}
.mode-item{display:flex;align-items:center;justify-content:space-between;padding:11px 10px;border-radius:7px;background:#fff3e8;color:var(--navy);font-size:.78rem;font-weight:700}.mode-item b{color:var(--orange)}
.sidebar-links{display:grid;gap:7px;padding-top:20px;border-top:1px solid var(--line)}.sidebar-links button,.sidebar-links a{display:block;width:100%;border:0;background:transparent;padding:10px;text-align:left;color:var(--navy);font:inherit;font-size:.78rem;font-weight:800;cursor:pointer}.sidebar-links button:hover,.sidebar-links a:hover{color:var(--orange)}
.catalog-results{min-width:0}.catalog-results .results-line{height:44px;padding-top:0}.catalog-results .course-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:1100px){.catalog-layout{grid-template-columns:230px minmax(0,1fr)}.catalog-results .course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.catalog-layout{grid-template-columns:1fr;gap:18px}.course-sidebar{position:static}.sidebar-toggle{display:block}.course-sidebar .sidebar-content{display:none}.course-sidebar.open .sidebar-content{display:block}.catalog-results .course-grid{grid-template-columns:1fr}.sidebar-heading{padding:16px 18px}}