:root{--primary:#4a90d9;--primary-dark:#3a7bc8;--success:#34c759;--warning:#ffcc00;--error:#ff3b30;--bg:#f5f5f7;--card-bg:#ffffff;--text:#1d1d1f;--text-muted:#6e6e73;--border:#d2d2d7}*{box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,sans-serif;background:var(--bg);color:var(--text);margin:0;padding:20px;line-height:1.5}.container{max-width:700px;margin:0 auto}h1{margin:0 0 8px 0;font-size:28px;font-weight:600}.subtitle{margin:0 0 24px 0;color:var(--text-muted)}h2{margin:0 0 16px 0;font-size:18px;font-weight:600}h3{margin:20px 0 12px 0;font-size:15px;font-weight:600}.card{background:var(--card-bg);border-radius:12px;padding:20px;margin-bottom:16px;box-shadow:0 1px 3px rgba(0,0,0,0.08)}.card summary{cursor:pointer;font-weight:600;padding:4px 0}.card summary:hover{color:var(--primary)}.status-row{display:flex;align-items:center;margin-bottom:12px}.status-row .label{min-width:80px;color:var(--text-muted);font-size:14px}.status-badge{display:inline-block;padding:4px 12px;border-radius:16px;font-size:13px;font-weight:500}.status-badge.checking{background:#f0f0f0;color:var(--text-muted)}.status-badge.caching{background:#fff3cd;color:#856404}.status-badge.ready{background:#d4edda;color:#155724}.status-badge.offline{background:#cce5ff;color:#004085}.status-badge.error,.status-badge.unsupported{background:#f8d7da;color:#721c24}.status-badge.incomplete{background:#fff3cd;color:#856404}.progress-container{margin:16px 0;background:#e9ecef;border-radius:8px;height:24px;position:relative;overflow:hidden}.progress-bar{background:var(--primary);height:100%;width:0%;transition:width 0.3s ease;border-radius:8px}.progress-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:12px;font-weight:500;color:var(--text)}.button-row{display:flex;gap:12px;margin-top:16px}.btn{padding:10px 20px;border:none;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;background:var(--primary);color:white;transition:background 0.2s}.btn:hover{background:var(--primary-dark)}.btn.secondary{background:#e9ecef;color:var(--text)}.btn.secondary:hover{background:#dde0e4}.btn.primary{background:var(--success)}.btn.primary:hover{background:#28a745}.btn.small{padding:6px 12px;font-size:12px}.update-banner{background:#d4edda;display:flex;align-items:center;justify-content:space-between;gap:16px}.update-content{display:flex;flex-direction:column;gap:4px}.update-content strong{color:#155724}ol,ul{margin:0;padding-left:24px}li{margin-bottom:8px}code{background:#f0f0f0;padding:2px 6px;border-radius:4px;font-family:'SF Mono',Monaco,monospace;font-size:13px}pre{background:#1d1d1f;color:#f0f0f0;padding:16px;border-radius:8px;overflow-x:auto;font-family:'SF Mono',Monaco,monospace;font-size:12px;line-height:1.4;margin:12px 0 0 0;max-height:300px}pre:empty{display:none}demo-app{display:block;margin-top:24px}