:root{--brand-primary:#3b82f6;--brand-secondary:#60a5fa;--brand-navy:#0f172a;--surface:#fff;--page-bg:#f4f7fe;--muted:#64748b;--border:#e7ebf5;--danger:#dc2626;--danger-bg:#fef2f2;--success:#16a34a;--success-bg:#f0fdf4;--warning:#d97706}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--page-bg);color:var(--brand-navy);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Arial,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.shell{background:var(--page-bg);max-width:480px;min-height:100vh;margin:0 auto;padding-bottom:84px;position:relative}.page{padding:16px 16px 24px}.hero{text-align:center;place-items:center;min-height:100vh;padding:24px;display:grid}.logo{width:160px;height:auto}.topbar{z-index:5;background:var(--page-bg);align-items:center;gap:10px;padding:14px 16px 6px;display:flex;position:sticky;top:0}.topbar 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span{background:var(--border);cursor:pointer;border-radius:999px;width:6px;height:6px}.gallery-dots span.active{background:var(--brand-primary);width:16px}.color-swatch{border:2px solid var(--border);cursor:pointer;border-radius:999px;flex-shrink:0;width:32px;height:32px;padding:0}.color-swatch.active{border-color:var(--brand-primary);box-shadow:0 0 0 2px #3b82f64d}.in-stock-line{color:var(--success);margin:2px 0 8px;font-size:.85rem;font-weight:600}.old-price{color:var(--muted);font-size:1rem;font-weight:400;text-decoration:line-through}.qty{background:#f1f5f9;border-radius:10px;align-items:center;gap:2px;padding:2px;display:flex}.qty button{background:0 0;border:0;border-radius:8px;width:auto;padding:6px 12px;font-weight:700}.qty span{text-align:center;min-width:22px;font-weight:700}.stepper{align-items:center;gap:6px;margin-bottom:16px;display:flex}.stepper 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