:root{--sidebar-w:200px;--text:#111827;--text-muted:#6b7280;--bg:#f3f4f6;--surface:#fff;--border:#e5e7eb;--accent:#6366f1;--sidebar-bg:#18181b;--sidebar-text:#a1a1aa;--sidebar-active:#a78bfa}*{box-sizing:border-box}body{color:var(--text);background:var(--bg);margin:0;font:14px/1.5 system-ui,Segoe UI,sans-serif}.layout{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-w);background:var(--sidebar-bg);flex-direction:column;flex-shrink:0;height:100vh;display:flex;position:sticky;top:0}.sidebar-title{letter-spacing:.08em;text-transform:uppercase;color:var(--sidebar-active);padding:20px 16px 16px;font-size:12px;font-weight:700}.nav-link{color:var(--sidebar-text);border-radius:6px;margin:2px 8px;padding:9px 14px;font-size:14px;text-decoration:none;transition:background .1s,color .1s;display:block}.nav-link:hover{color:#fff;background:#ffffff12}.nav-link.active{color:var(--sidebar-active);background:#a78bfa26}.main{flex:1;padding:28px 32px}h1{color:var(--text);margin:0 0 20px;font-size:20px;font-weight:600}.muted{color:var(--text-muted);font-size:13px}code{color:var(--text);background:#f3f4f6;border-radius:4px;padding:2px 6px;font-family:ui-monospace,Consolas,monospace;font-size:12px}.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;overflow:hidden}table{border-collapse:collapse;width:100%}th{text-align:left;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);border-bottom:1px solid var(--border);background:#f9fafb;padding:10px 14px;font-size:11px;font-weight:600}td{border-bottom:1px solid var(--border);vertical-align:top;padding:12px 14px}tbody tr:last-child td{border-bottom:none}tbody tr.clickable{cursor:pointer}tbody tr.clickable:hover{background:#f9fafb}.program-title{margin-bottom:2px;font-weight:500}button{border:1px solid var(--border);background:var(--surface);cursor:pointer;border-radius:6px;padding:6px 14px;font-family:inherit;font-size:13px;transition:background .1s}button:hover:not(:disabled){background:var(--bg)}button:disabled{opacity:.4;cursor:not-allowed}.pagination{align-items:center;gap:12px;margin-top:16px;display:flex}.back-btn{border:1px solid var(--border);background:var(--surface);cursor:pointer;color:var(--text);border-radius:6px;align-items:center;gap:6px;margin-bottom:16px;padding:6px 12px;font-size:13px;display:inline-flex}.back-btn:hover{background:var(--bg)}.detail-list{margin:0;padding:0;list-style:none}.detail-row{border-bottom:1px solid var(--border);padding:12px 16px;display:flex}.detail-row:last-child{border-bottom:none}.detail-row dt{width:140px;color:var(--text-muted);flex-shrink:0;padding-top:1px;font-size:13px;font-weight:500}.detail-row dd{flex:1;margin:0}.description{white-space:pre-wrap;line-height:1.7}.page-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.page-header h1{margin:0}.period-selector{gap:4px;display:flex}.period-selector button.active{background:var(--accent);color:#fff;border-color:var(--accent)}.thumb-sm{object-fit:cover;background:var(--border);border-radius:4px;width:40px;height:40px;display:block}.thumb-circle{border-radius:50%}.thumb-lg{object-fit:cover;background:var(--border);border-radius:8px;flex-shrink:0;width:160px;height:160px}.detail-header{align-items:center;gap:16px;margin-bottom:20px;display:flex}.completion-bar{align-items:center;gap:8px;display:flex}.bar-track{background:#e5e7eb;border-radius:3px;flex-shrink:0;width:72px;height:6px;overflow:hidden}.bar-fill{background:var(--accent);border-radius:3px;height:100%}