:root{color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}body{margin:0;min-height:100vh;display:grid;place-items:center;background:#f4f5f7}.card{width:min(92vw,380px);background:#fff;border-radius:16px;padding:32px;box-shadow:0 10px 40px #00000014;text-align:center}.card h1{margin:0 0 4px;font-size:1.25rem}.amount{font-size:2rem;font-weight:700;margin:16px 0 24px}.pay{display:block;padding:14px;border-radius:10px;background:#1a7f37;color:#fff;text-decoration:none;font-weight:600}.muted{color:#6b7280;font-size:.9rem}.err{color:#b3261e;font-weight:600}.brand{margin-top:24px;color:#9aa0a6;font-size:.75rem}.brand{display:flex;align-items:center;justify-content:center;gap:6px}.brand-logo{width:16px;height:16px;vertical-align:middle}