.app-shell{margin-left:236px}.main-content{padding:34px 38px;max-width:1600px;margin:auto}.topbar{position:relative;left:0;width:100%;height:76px;padding:20px 38px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);background:var(--surface)}.topbar-actions{display:flex;align-items:center;gap:18px}.brand-sub{display:block;font-size:9px;letter-spacing:2px;margin:16px 0 36px}.sidebar{padding:40px 20px}.nav-list{display:grid;gap:10px}.nav-item{padding:13px;border-radius:10px;display:block;background:transparent;text-align:left;color:var(--text);border:0;font-size:14px;width:100%}.nav-item:hover{background:var(--orange-light)}.panel{padding:26px;margin-bottom:20px}.form-panel{max-width:650px;margin:30px auto}.form-panel p{margin:18px 0}label{display:block;margin-bottom:7px}input:not([type=radio]):not([type=checkbox]),textarea,select{font:inherit;width:100%;max-width:100%;padding:12px;border:1px solid var(--border);border-radius:9px;color:var(--text);background:var(--surface)}textarea{min-height:130px}input[type=radio]{margin-right:10px}.errorlist{color:var(--text);border-left:3px solid var(--orange);padding-left:24px}.helptext{display:block;color:var(--muted);font-size:12px;margin-top:7px}.course-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px}.lesson-link{display:flex;justify-content:space-between;gap:12px;padding:14px 0;border-top:1px solid var(--border)}h1{margin-bottom:15px}h2{margin-bottom:15px}.stack{display:grid;gap:15px}.prose{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7}.muted{color:var(--muted)}.notice{padding:15px;background:var(--orange-light);margin-bottom:20px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.question{border:1px solid var(--border);border-radius:12px;padding:20px;margin:20px 0}.question label{display:flex;padding:10px;background:var(--surface-alt);border-radius:8px}.message-entry{padding:14px;border-bottom:1px solid var(--border)}.message-entry p{white-space:pre-wrap;overflow-wrap:anywhere}.table-wrap{overflow:auto}table{width:100%}td,th{padding:12px;text-align:left}.video-frame{width:100%;aspect-ratio:16/9;border:0;border-radius:16px}.empty{padding:30px;border:1px dashed var(--border);border-radius:12px}#menu-toggle{display:none}a{overflow-wrap:anywhere}.brand{white-space:nowrap}
@media(max-width:900px){.app-shell{margin-left:0}.sidebar{z-index:20;transform:translateX(-100%)}.sidebar.open{transform:translateX(0)}#menu-toggle{display:block}.course-grid{grid-template-columns:1fr}.main-content{padding:24px 18px}.topbar{padding:16px;gap:14px}.topbar-actions>span{display:none}.panel{padding:20px}.topbar-actions{gap:12px;font-size:12px}}

.app-shell{display:block;min-width:0}.main-content{min-width:0}.topbar>span{white-space:nowrap}.topbar-actions{flex-shrink:0}.course-grid>section,.course-grid>aside{min-width:0}fieldset{min-width:0}.hero{margin-bottom:20px}.hero-content{max-width:100%}

.sidebar{top:0}.sidebar .brand{margin-bottom:38px}.icon-btn{font-size:22px;flex-shrink:0}.panel details{padding:15px 0;border-bottom:1px solid var(--border)}.panel summary{cursor:pointer;line-height:1.5}.panel .btn{border:1px solid var(--border);margin-top:12px}.panel .btn-primary{border-color:var(--orange)}.hero .box-art{font-size:48px;display:grid;place-items:center}.hero .box-small{font-size:22px;display:grid;place-items:center}.hero-art{pointer-events:none}@media(max-width:600px){.hero-art{display:none}.hero h2{font-size:28px}.topbar>span{font-size:12px}}