:root{--brand: #0a6fb6;--brand-dark: #0a5288;--accent: #ffa500;--bg: #f6f8fb;--card: #ffffff;--ink: #1f2937;--ink-muted: #6b7280;--line: #e5e7eb;--ok: #16a34a;--ok-bg: #dcfce7;--warn: #d97706;--warn-bg: #fef3c7;--bad: #dc2626;--bad-bg: #fee2e2;--info: #2563eb;--info-bg: #dbeafe;--shadow: 0 1px 2px rgba(0,0,0,.04), 0 1px 3px rgba(0,0,0,.06)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.5}h1{font-size:22px;margin:0 0 4px}h2{font-size:16px;margin:0 0 12px;color:var(--ink)}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.muted{color:var(--ink-muted)}.center-pad{padding:40px;text-align:center;color:var(--ink-muted)}.app-header{display:flex;align-items:center;gap:24px;padding:10px 24px;background:#fff;border-bottom:1px solid 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