[hidden]{display:none!important}
.shelf-toolbar{flex-wrap:wrap}
.pwa-install{padding:.65rem 1rem;border:1px solid #b9a274;border-radius:.5rem;background:#f4f7f9;color:#18364a;font:inherit;cursor:pointer;min-height:44px}
.pwa-install:focus-visible,.offline-book:focus-visible{outline:3px solid #16858d;outline-offset:4px}
.offline-page{margin:0;background:#dceaf2;color:#18364a;font:17px/1.6 system-ui,sans-serif;min-height:100vh}
.offline-main{max-width:760px;margin:auto;padding:clamp(24px,5vw,64px);padding-top:max(40px,env(safe-area-inset-top));padding-bottom:max(32px,env(safe-area-inset-bottom))}
.offline-kicker{letter-spacing:.15em;font-size:.75rem;text-transform:uppercase;color:#715d35}
.offline-page h1{font:normal clamp(2rem,6vw,3.8rem)/1.15 Georgia,serif;margin:.5em 0}
.offline-page a{color:#18364a}
.offline-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:24px 0}
.offline-book{display:block;padding:18px;border:1px solid #a8bdc9;border-radius:8px;background:#f1f6f9;text-decoration:none;overflow-wrap:anywhere}
.offline-book span{display:block;font-size:.78rem;letter-spacing:.08em;color:#715d35}
.offline-note{font-size:.9rem;color:#435969}
@media(max-width:400px){.offline-grid{grid-template-columns:1fr}}

.pwa-install-help{box-sizing:border-box;width:min(440px,calc(100% - 32px));max-height:calc(100dvh - 40px);overflow:auto;padding:28px;border:1px solid #b6c9d4;border-radius:16px;background:#f4f8fb;color:#18364a;font:16px/1.55 system-ui,sans-serif;box-shadow:0 18px 60px #102a4340}
.pwa-install-help::backdrop{background:#102a4370}
.pwa-install-help h2{margin:0 28px 12px 0;font:normal 26px/1.2 Georgia,serif}
.pwa-install-help ol{padding-left:24px;margin:20px 0}
.pwa-install-help li{padding-left:4px;margin:0 0 14px}
.pwa-install-help .pwa-help-note{font-size:14px;color:#435969}
.pwa-help-close{position:absolute;right:12px;top:10px;width:44px;height:44px;border:0;background:transparent;color:#18364a;font:26px system-ui;cursor:pointer}
.pwa-help-close:focus-visible{outline:3px solid #16858d;border-radius:6px}