:root{--primary:#f59e0b;--primary-dark:#d97706;--bg-color:#f3f4f6;--card-bg:#fff;--text-main:#111827;--text-muted:#6b7280;--border-color:#e5e7eb;--success:#16a34a;--danger:#dc2626;--warning:#eab308;--radius:12px;--shadow:0 4px 6px -1px #0000004d, 0 2px 4px -2px #0000004d}[data-theme=dark]{--bg-color:#050505;--card-bg:#0a0a0a;--text-main:#f9fafb;--text-muted:#9ca3af;--border-color:#1a1a1a;--success:#22c55e;--danger:#ef4444}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}body{background-color:var(--bg-color);color:var(--text-main);padding-bottom:80px;font-size:16px}a{color:inherit;text-decoration:none}.container{max-width:600px;margin:0 auto;padding:16px}@media (width>=768px){.container{max-width:1200px}}.header{background-color:var(--bg-color);z-index:10;text-align:center;padding:20px 16px;position:sticky;top:0}.header 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h3{color:var(--text-main);margin-bottom:6px;font-size:18px}.product-price{color:var(--text-muted);font-size:16px;font-weight:500}.quantity-controls{align-items:center;gap:12px;display:flex}.qty-btn{background:var(--primary);color:#121212;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:20px;font-weight:700;display:flex}.checkout-summary{border:1px solid var(--border-color);margin-top:20px;padding:20px}.summary-item{justify-content:space-between;margin-bottom:16px;font-size:16px;display:flex}.summary-total{border-top:1px solid var(--border-color);color:var(--primary);justify-content:space-between;margin-top:24px;padding-top:24px;font-size:22px;font-weight:700;display:flex}.empty-state{text-align:center;color:var(--text-muted);padding:40px 20px;font-size:18px}@media screen{.print-only{display:none!important}}@media print{@page{margin:0}body *{visibility:hidden}.print-only,.print-only 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