:root{--brand: #921b00;--brand-deep: #5a1000;--grad: linear-gradient(135deg, var(--brand), var(--brand-deep));--card: #fff;--bg: #f7f7fb;--line: #e5e7eb;--ink: #0f172a;--muted: #64748b;--chip2: #eef2f7}.cartflow-container{display:flex;flex-direction:column;height:100%;background:var(--bg);color:var(--ink);overflow:hidden}.horizontal-container{flex:1;display:flex;overflow-x:hidden;scroll-snap-type:x mandatory;scroll-behavior:smooth;width:100%}.horizontal-container::-webkit-scrollbar{display:none}.subcard{flex:0 0 100%;min-width:100%;height:100%;background:var(--card);padding:2rem 2rem 4.5rem;border-radius:18px;box-shadow:0 4px 16px #00000014;display:flex;flex-direction:column;align-items:center;overflow-y:auto;scroll-snap-align:start;transition:opacity .35s ease,transform .35s ease}.subcard h3{color:var(--brand);font-size:1.5rem;margin-bottom:.4rem}.subcard h4{color:var(--muted);margin-bottom:1.2rem}.checkout-progress{display:flex;align-items:center;justify-content:center;gap:.75rem;max-width:720px;margin:1.5rem auto .5rem}.progress-step{padding:.55rem 1.1rem;font-size:.95rem;font-weight:600;color:var(--muted);background:var(--chip2);border-radius:999px;cursor:pointer;transition:.3s}.progress-step.active{background:var(--grad);color:#fff;transform:translateY(-1px)}.progress-line{flex:1;height:3px;background:var(--line);border-radius:3px}.progress-count{text-align:center;color:var(--muted);font-size:.9rem;margin-bottom:.8rem}.option-grid{width:100%;max-width:600px;margin:1rem 0;display:grid;gap:1rem}@media(min-width:640px){.option-grid{grid-template-columns:1fr 1fr}}.option-card{display:flex;align-items:flex-start;gap:.8rem;padding:1rem;background:#f9fafb;border:2px solid var(--line);border-radius:12px;cursor:pointer;transition:.25s}.option-card:hover{border-color:var(--brand)}.option-card i{width:22px;height:22px;color:var(--brand);transition:.25s}.option-card h4{margin:0;font-size:1rem;font-weight:600}.option-card p{margin:0;font-size:.9rem;color:var(--muted)}.option-card.active{background:var(--grad);color:#fff;border-color:transparent;transform:translateY(-1px)}.option-card.active i{color:#fff;transform:scale(1.1)}.form-sections{width:100%;max-width:700px;display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-bottom:1rem}.form-group h4{color:var(--brand);font-size:1rem;margin-bottom:.75rem}.form-group label{font-weight:600;color:var(--ink);margin-top:.5rem;display:block}.form-group input{width:100%;padding:.6rem .75rem;border:1px solid var(--line);border-radius:10px;background:#fff;margin-top:.3rem}.tos-confirm{width:100%;max-width:700px;display:flex;gap:.9rem;padding:1.1rem 1.4rem;background:#fff;border:1px solid var(--line);border-radius:12px;margin:2rem 0 1rem;color:var(--muted)}.tos-confirm input[type=checkbox]{appearance:none;width:22px;height:22px;background:#fff;border:1.5px solid var(--line);border-radius:6px;cursor:pointer;display:grid;place-items:center;transition:.25s}.tos-confirm input[type=checkbox]:after{content:"";width:12px;height:12px;background:var(--brand);background:var(--grad);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' stroke='%23fff' stroke-width='3' fill='none' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' stroke='%23fff' stroke-width='3' fill='none' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");-webkit-mask-position:center;mask-position:center;-webkit-mask-size:contain;mask-size:contain;opacity:0;transform:scale(.5);transition:.35s cubic-bezier(.2,1.4,.3,1)}.tos-confirm input[type=checkbox]:checked{border-color:var(--brand)}.tos-confirm input[type=checkbox]:checked:after{opacity:1;transform:scale(1)}.tos-confirm label{color:var(--ink);font-weight:500;cursor:pointer}.tos-confirm a{color:var(--brand);font-weight:600;text-decoration:none}.tos-confirm a:hover{color:var(--brand-deep);text-decoration:underline}.step-actions,.summary-footer{margin-bottom:1.5rem;display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.next-btn,.prev-btn{padding:.9rem 1.4rem;border:none;border-radius:10px;font-weight:700;background:var(--grad);color:#fff;cursor:pointer;transition:.2s}.next-btn:hover,.prev-btn:hover{filter:brightness(1.1);transform:translateY(-1px)}.next-btn:disabled{opacity:.6;cursor:not-allowed}.summary-footer{width:100%;max-width:600px;flex-direction:column;align-items:center;padding-top:1.5rem;border-top:1px solid var(--line)}.summary-total{font-weight:600;color:var(--brand)}#cartSummary .cart-item{display:flex;justify-content:space-between;gap:1.2rem;padding:.9rem 0;border-bottom:1px solid var(--line)}#cartSummary .cart-item:last-child{border-bottom:none}#cartSummary .info{flex:1;display:flex;flex-direction:column;gap:.25rem}#cartSummary .quantity-controls{display:flex;align-items:center;gap:.5rem}.qty-btn{width:26px;height:26px;background:var(--card);border:1px solid var(--line);border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.2s}.qty-btn:hover{background:var(--bg);color:var(--brand)}#cartSummary .quantity{min-width:22px;text-align:center;font-weight:600}@media(max-width:700px){.form-sections{grid-template-columns:1fr}.subcard{padding:1.2rem}.checkout-progress{flex-wrap:wrap;gap:.5rem}.progress-step{font-size:.85rem;padding:.4rem .9rem}}@media(max-width:480px){.checkout-progress{display:none}.progress-count{margin-top:1rem;font-size:1rem;font-weight:700}}@media(min-width:700px){.subcard{padding-bottom:2rem}.step-actions,.summary-footer{margin-bottom:.5rem}}.option-card.active *{color:#fff}