*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f172a;--surface: #1e293b;--surface-hover: #273549;--border: #334155;--text: #f1f5f9;--text-muted: #94a3b8;--green: #22c55e;--red: #ef4444;--yellow: #eab308;--blue: #60a5fa;--gray: #64748b;--radius: 8px;--gap: 12px}html,body{min-height:100vh;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:15px;line-height:1.5}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:var(--surface);border-bottom:1px solid var(--border);padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;position:sticky;top:0;z-index:10}.app-title{font-size:18px;font-weight:800;color:var(--blue);letter-spacing:-.3px}.installer-info{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted)}.btn-text{background:none;border:none;color:var(--blue);cursor:pointer;font-size:13px;padding:2px 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