:root{--ink:#1c2b2e;--ink-muted:#4f6266;--primary:#1d5c63;--discount:#b3423d;--bg:#f3f6f6;--surface:#fff;--border:#d6e0e1}body{background:var(--bg);color:var(--ink);margin:0;font-family:BIZ UDPGothic,sans-serif;line-height:1.5}.page{background:var(--surface);border:1px solid var(--border);border-radius:12px;max-width:640px;margin:48px auto;padding:24px 32px}.page h1{margin:0 0 8px;font-size:24px}.health{color:var(--ink-muted)}.health-ok{color:var(--primary);font-weight:700}.health-error{color:var(--discount);font-weight:700}