.dash-center{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;height:50vh;color:var(--text-muted);font-size:var(--text-sm)}.dash-error{color:var(--red)}.dash-page{padding:32px 40px 64px;max-width:1040px}.dash-header{margin-bottom:28px}.dash-title{font-size:var(--text-2xl);font-weight:700;color:var(--text);letter-spacing:-.02em;line-height:1.2}.dash-subtitle{font-size:var(--text-sm);color:var(--text-muted);margin-top:4px}.dash-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:40px}.dash-stat{display:flex;flex-direction:column;align-items:center;gap:6px;padding:20px 16px;text-align:center}.dash-section{margin-bottom:40px}.dash-section-title{font-size:var(--text-base);font-weight:600;color:var(--text);margin-bottom:16px}.dash-empty{display:flex;flex-direction:column;align-items:center;gap:8px;padding:48px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);color:var(--text-muted);font-size:var(--text-sm);text-align:center}.dash-course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.dash-course-card{display:flex;flex-direction:column;gap:8px}.dash-course-title{font-size:var(--text-base);font-weight:600;color:var(--text)}.dash-course-desc{font-size:var(--text-sm);color:var(--text-muted);line-height:1.5}.dash-course-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:var(--text-xs);color:var(--text-muted);margin-top:2px}.dash-course-count{font-size:var(--text-xs);color:var(--text-dim)}.dash-course-cta{margin-top:8px;align-self:flex-start}.dash-activity-list{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);overflow:hidden}.dash-activity-row{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--border);gap:12px;transition:background .15s}.dash-activity-row:last-child{border-bottom:none}.dash-activity-row:hover{background:var(--surface-2)}.dash-activity-left{display:flex;align-items:center;gap:12px;min-width:0}.dash-dot{width:8px;height:8px;border-radius:50%;background:var(--border);flex-shrink:0}.dash-dot.done{background:var(--green)}.dash-activity-id{font-size:var(--text-sm);font-family:var(--font-mono);color:var(--text)}.dash-activity-right{display:flex;align-items:center;gap:8px;flex-shrink:0}.dash-attempts{font-size:var(--text-xs);color:var(--text-dim);font-family:var(--font-mono)}.dash-review-btn{padding:5px 10px;font-size:var(--text-xs)}.dash-skel{background:var(--surface-2);border-radius:var(--radius-sm);position:relative;overflow:hidden}.dash-skel:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.06) 50%,transparent);background-size:200% 100%;animation:dash-shimmer 1.4s ease infinite}@keyframes dash-shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.dash-skel-title{height:28px;width:160px;margin-bottom:8px}.dash-skel-sub{height:14px;width:240px}.dash-skel-num{height:32px;width:56px;border-radius:var(--radius-md)}.dash-skel-label{height:10px;width:64px;margin-top:4px}.dash-skel-section-title{height:14px;width:100px;margin-bottom:16px}.dash-skel-card-title{height:18px;width:70%;margin-bottom:8px}.dash-skel-card-line{height:12px;width:90%}.dash-skel-card-bar{height:6px;width:100%;border-radius:3px;margin-top:12px}@media (max-width:900px){.dash-page{padding:20px 16px 48px}.dash-stats{grid-template-columns:repeat(2,1fr)}}