:root{--bg:#f7f7f8;--surface:#ffffff;--border:#e2e2e5;--text:#17181c;--text-muted:#6b6f76;--accent:#1a56db;--accent-text:#ffffff;--danger:#b3261e;--danger-bg:#fdecea;--radius:10px}@media (prefers-color-scheme:dark){:root{--bg:#101114;--surface:#17181c;--border:#2a2b30;--text:#f2f2f3;--text-muted:#9a9da5;--accent:#5b8def;--accent-text:#0b0c0e;--danger:#ff8a80;--danger-bg:#3a1f1d}}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}.page{max-width:520px;margin:0 auto;padding:20px 16px 96px;min-height:100dvh}.section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}.sectionTitle{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin:0 0 10px}.lineItem{display:flex;justify-content:space-between;gap:12px;padding:6px 0;font-size:15px}.lineItemName{color:var(--text)}.lineItemMeta{color:var(--text-muted);font-size:13px}.totalsRow{display:flex;justify-content:space-between;padding:4px 0;font-size:14px;color:var(--text-muted)}.totalsRow.grandTotal{color:var(--text);font-weight:700;font-size:17px;border-top:1px solid var(--border);margin-top:8px;padding-top:10px}.field{margin-bottom:12px}.field label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:4px}.field input,.field select{width:100%;padding:11px 12px;font-size:16px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text)}.field input:focus,.field select:focus{outline:2px solid var(--accent);outline-offset:1px}.row2{display:grid;grid-template-columns:1fr 1fr;grid-gap:10px;gap:10px}.shippingOption{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--border);font-size:15px}.shippingOption:last-child{border-bottom:none}.discountRow{display:flex;gap:8px}.discountRow input{flex:1 1}.button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;border-radius:8px;padding:11px 16px;font-size:15px;font-weight:600;cursor:pointer;transition:opacity .15s ease,transform .1s ease}.button:active{transform:scale(.98)}.buttonPrimary{background:var(--accent);color:var(--accent-text);width:100%}.buttonSecondary{background:transparent;color:var(--accent);border:1px solid var(--accent)}.button:disabled{opacity:.5;cursor:not-allowed}.payBar{position:fixed;left:0;right:0;bottom:0;background:var(--surface);border-top:1px solid var(--border);padding:12px 16px calc(12px + env(safe-area-inset-bottom))}.payBarInner{max-width:520px;margin:0 auto}.errorText{color:var(--danger);background:var(--danger-bg);border-radius:8px;padding:8px 10px;font-size:13px;margin-top:8px}.helperText{color:var(--text-muted);font-size:13px;margin-top:6px}.spinner{display:inline-block;width:14px;height:14px;border:2px solid;border-right:2px solid transparent;border-radius:50%;animation:spin .7s linear infinite;vertical-align:-2px;margin-right:6px}@keyframes spin{to{transform:rotate(1turn)}}.centerState{min-height:60dvh;display:flex;align-items:center;justify-content:center;text-align:center;padding:24px;color:var(--text-muted)}