:root{color:#122033;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;background:#f5f7fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{min-width:320px}button,input{font:inherit}.checkout-shell{justify-content:center;align-items:center;width:min(720px,100%);min-height:100vh;margin:0 auto;padding:24px;display:flex}.form-panel,.result-card{border:1px solid #637ea72e;border-radius:20px;box-shadow:0 18px 48px #18284814}.eyebrow{color:#5e77a3;letter-spacing:.16em;text-transform:uppercase;margin:0 0 8px;font-size:.76rem;font-weight:800}h1,h2{margin:0;line-height:1.15}h1{color:#11223a;letter-spacing:-.04em;font-size:clamp(1.9rem,4vw,2.5rem)}h2{color:#11223a;letter-spacing:-.04em;font-size:clamp(1.8rem,3vw,2.5rem)}.lead{max-width:440px;margin:18px 0 32px;font-size:1.05rem;line-height:1.7}.form-panel{background:#fff;align-items:center;width:100%;padding:32px;display:flex}form{gap:18px;width:100%;display:grid}.form-heading{margin-bottom:6px}.form-heading .muted{margin:8px 0 0}.amount-row{background:#f8fafc;border:1px solid #d7e1ef;border-radius:16px;justify-content:space-between;align-items:center;gap:16px;padding:16px;display:flex}.amount-row span{color:#607089;font-weight:700}.amount-row strong{color:#11223a;font-size:1.25rem}label{color:#3a4a61;gap:8px;font-size:.9rem;font-weight:700;display:grid}input{color:#122033;background:#fbfdff;border:1px solid #d7e1ef;border-radius:14px;outline:none;width:100%;min-height:48px;padding:12px 14px;transition:border-color .16s,box-shadow .16s}input:focus{border-color:#4f7cc8;box-shadow:0 0 0 4px #4f7cc824}.two-column,.three-column{gap:14px;display:grid}.two-column{grid-template-columns:repeat(2,minmax(0,1fr))}.three-column{grid-template-columns:1.2fr .75fr .75fr}button,.secondary-action{border-radius:16px;justify-content:center;align-items:center;width:100%;min-height:52px;font-weight:800;text-decoration:none;display:inline-flex}button{color:#fff;cursor:pointer;background:linear-gradient(135deg,#315fdd,#173a8a);border:0;margin-top:4px;box-shadow:0 16px 36px #315fdd38}button:disabled{cursor:wait;opacity:.72}.secondary-action{color:#21446e;background:#f6f9fe;border:1px solid #cad8ee}.alert{border-radius:16px;padding:13px 14px;font-size:.92rem;line-height:1.5}.alert.error{color:#991b1b;background:#fff1f2;border:1px solid #fecaca}.alert.info{color:#1d4ed8;background:#eff6ff;border:1px solid #bfdbfe}.result-shell{justify-content:center;align-items:center;display:flex}.result-card{text-align:center;background:#fff;width:min(560px,100%);padding:42px}.muted{color:#607089;max-width:420px;margin:18px auto 0;line-height:1.7}.order-pill{color:#5d6e86;background:#f3f6fb;border-radius:16px;gap:4px;margin-top:24px;padding:14px 18px;display:inline-grid}.order-pill strong{color:#122033;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace}@media (width<=820px){.checkout-shell{padding:14px}.form-panel,.result-card{padding:22px}.two-column,.three-column{grid-template-columns:1fr}}