body{background:#f7f7f7;color:#222;font-family:Inter,sans-serif;margin:0}.app-container{background:#fff;border-radius:12px;box-shadow:0 2px 16px #00000014;margin:2rem auto;max-width:960px;padding:2rem}@media (max-width:650px){.bookdisplay-spacer-sm{display:block!important;margin-bottom:.1rem!important}}.checkout-sidebar{background:#fff;border-radius:24px 0 0 24px;bottom:0;box-shadow:-4px 0 24px #0000001f;display:flex;flex-direction:column;height:100vh;justify-content:flex-start;left:0;overflow-y:scroll;padding:0 8px;position:fixed;right:0;top:0;z-index:10000}.stepper-header{background:#ccc;border-bottom:1px solid #222;display:flex;gap:2px;justify-content:center;left:0;overflow-x:scroll;padding:16px 32px 16px 200px;position:absolute;right:0;top:0}.sidebar-arrow{background:#fff;border-radius:0 5px 5px 0;box-shadow:2px 0 12px #00000014;-webkit-clip-path:polygon(0 0,100% 50%,0 100%);clip-path:polygon(0 0,100% 50%,0 100%);height:60px;position:absolute;right:-32px;top:40px;width:40px;z-index:2}.sidebar-back{align-self:flex-start;background:none;border:none;color:#0070f3;cursor:pointer;font-size:16px;font-weight:600;padding:8px 32px}.sidebar-bottom-btn{background:#222;border:none;border-radius:12px;box-shadow:0 2px 8px #00000014;color:#fff;cursor:pointer;font-size:20px;font-weight:700;margin-top:auto;padding:18px 0;transition:background .2s;width:100%}.sidebar-bottom-btn:disabled{background:#888;cursor:not-allowed}.sidebar-content{flex:1 1;overflow-y:auto;padding:24px 32px}.shipping-rate-button .text{width:100%}