:root{--background-color:#f9fafb;--text-color:#111827;--border-color:#d1d5db;--primary-color:#1677ff}html,body{touch-action:manipulation}body{background-color:var(--background-color);color:var(--text-color);-webkit-font-smoothing:antialiased;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}.app-container{min-height:100vh;padding-bottom:64px}.fixed-header-container{z-index:100;background-color:#fff;border-bottom:1px solid #e5e7eb;position:fixed;top:0;left:0;right:0}.fixed-footer-container{z-index:100;padding-bottom:constant(safe-area-inset-bottom);padding-bottom:env(safe-area-inset-bottom);background-color:#fff;border-top:1px solid #e5e7eb;position:fixed;bottom:0;left:0;right:0}.page-content{box-sizing:border-box;width:100%;max-width:672px;margin:0 auto;padding:36px 0 24px}.product-selector-trigger{border:1px solid var(--border-color);width:100%;height:40px;color:var(--text-color);cursor:pointer;box-sizing:border-box;background-color:#fff;border-radius:6px;justify-content:space-between;align-items:center;padding:8px 12px;display:flex}.product-selector-placeholder{color:#9ca3af}.product-selector-search-header{z-index:10;background-color:#fff;border-bottom:1px solid #f3f4f6;align-items:center;gap:8px;padding:16px;display:flex;position:sticky;top:0}