.pwa-guide{padding-block:2rem 4rem}.pwa-hero{padding:clamp(1.3rem,4vw,2.5rem);border:1px solid var(--border);border-radius:1rem;background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 13%,var(--surface)),var(--surface));box-shadow:var(--shadow)}.pwa-hero h1{margin:.2rem 0;font-size:clamp(2rem,5vw,3.4rem);letter-spacing:-.05em}.pwa-hero>p{max-width:46rem;color:var(--muted)}.pwa-install-button{min-height:44px;padding:.65rem 1rem;border:0;border-radius:.55rem;background:var(--accent);color:#fff;font-weight:850;cursor:pointer}.pwa-install-button[hidden]{display:none}.pwa-status{font-size:.85rem}.pwa-benefits{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin:1.2rem 0}.pwa-benefits article,.pwa-steps article,.pwa-note{padding:1.2rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}.pwa-benefits h2,.pwa-steps h2{margin:.1rem 0 .35rem;font-size:1.1rem}.pwa-benefits p,.pwa-steps li,.pwa-note{color:var(--muted)}.pwa-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.pwa-steps article:last-child{grid-column:1/-1}.pwa-steps ol{margin:.7rem 0 0;padding-left:1.3rem}.pwa-steps li+li{margin-top:.45rem}.pwa-note{margin-top:1rem}.pwa-note strong{color:var(--text)}@media(max-width:46rem){.pwa-benefits,.pwa-steps{grid-template-columns:1fr}.pwa-steps article:last-child{grid-column:auto}}
.chapter-ad-gate{max-width:38rem;margin-block:clamp(2rem,8vw,6rem);padding:clamp(1.4rem,4vw,2.4rem);border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);text-align:center}
.chapter-ad-gate__icon{display:grid;place-items:center;width:3.5rem;height:3.5rem;margin:0 auto .85rem;border-radius:50%;background:color-mix(in srgb,var(--accent) 12%,var(--surface));color:var(--accent-dark);font-size:1.65rem;font-weight:900}
.chapter-ad-gate h1{margin:.15rem 0 .5rem;font-size:clamp(1.7rem,5vw,2.4rem);letter-spacing:-.04em}.chapter-ad-gate>p:not(.eyebrow){max-width:31rem;margin:.35rem auto 1.25rem;color:var(--muted)}
.chapter-ad-gate__actions{display:grid;gap:.7rem}.chapter-ad-gate__actions a{display:flex;align-items:center;justify-content:center;min-height:48px;padding:.7rem 1rem;border-radius:.5rem;text-decoration:none;font-weight:900}.chapter-ad-gate__ad{border:1px solid var(--accent);background:var(--surface);color:var(--accent-dark)}.chapter-ad-gate__continue{gap:.45rem;background:var(--accent);color:#fff}.chapter-ad-gate>small{display:block;margin-top:1rem;color:var(--muted)}
.chapter-ad-page{overflow:hidden;background:#111}.chapter-ad-page .site-main{min-height:100dvh}
.chapter-ad-frame{position:fixed;inset:0;z-index:100;display:grid;grid-template-rows:auto 1fr;background:#111}
.chapter-ad-frame__bar{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:4.5rem;padding:.65rem max(1rem,env(safe-area-inset-right)) .65rem max(1rem,env(safe-area-inset-left));border-bottom:1px solid #ffffff24;background:#171417;color:#fff;box-shadow:0 3px 16px #0006}
.chapter-ad-frame__bar p{margin:0;color:#ffffffa8;font-size:.62rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase}.chapter-ad-frame__bar h1{margin:.08rem 0 0;font-size:clamp(.9rem,3.5vw,1.15rem)}
.chapter-ad-frame__status{display:block;max-width:42rem;margin-top:.15rem;color:#ffffff9c;font-size:.66rem;font-weight:600;line-height:1.3}
.chapter-ad-frame__fallback>div{max-width:32rem;padding:1.25rem;border:1px solid #ffffff24;border-radius:.6rem;background:#ffffff0b}.chapter-ad-frame__fallback strong{color:#fff}.chapter-ad-frame__fallback p{margin:.4rem 0 0}
.chapter-ad-frame__continue{display:inline-flex;align-items:center;justify-content:center;flex:none;min-height:42px;padding:.55rem .8rem;border-radius:.45rem;background:var(--accent);color:#fff;text-decoration:none;font-size:.78rem;font-weight:900}.chapter-ad-frame__continue.is-disabled{background:#4b4649;color:#ffffffa8;cursor:not-allowed}
.chapter-ad-frame__content{width:100%;height:100%;border:0;background:#fff}.chapter-ad-frame__fallback{display:grid;place-items:center;padding:1rem;color:#ffffffb8;text-align:center}.chapter-ad-frame__noscript{position:fixed;right:1rem;bottom:1rem;z-index:3}.chapter-ad-frame__noscript a{padding:.65rem .85rem;border-radius:.45rem;background:var(--accent);color:#fff;font-weight:900}
@media(max-width:32rem){.chapter-ad-frame__bar{align-items:stretch;flex-direction:column}.chapter-ad-frame__continue{width:100%}}
.ios-chapter-ad-active{overflow:hidden}.ios-chapter-ad[hidden]{display:none}.ios-chapter-ad{position:fixed;inset:0;z-index:300;display:grid;place-items:center;padding:max(1rem,env(safe-area-inset-top)) max(1rem,env(safe-area-inset-right)) max(1rem,env(safe-area-inset-bottom)) max(1rem,env(safe-area-inset-left));background:rgb(12 10 12 / 88%);backdrop-filter:blur(10px)}
.ios-chapter-ad__panel{width:min(100%,28rem);padding:1.4rem;border:1px solid #ffffff2b;border-radius:.75rem;background:var(--surface);color:var(--text);box-shadow:0 22px 70px #0009;text-align:center}.ios-chapter-ad__panel h2{margin:.15rem 0 .5rem;font-size:clamp(1.45rem,6vw,2rem)}.ios-chapter-ad__panel>p:not(.eyebrow){margin:.4rem 0 1.15rem;color:var(--muted)}.ios-chapter-ad__panel>p strong{display:block;margin-bottom:.3rem;color:var(--text)}.ios-chapter-ad__panel>a,.ios-chapter-ad__panel>button{display:flex;align-items:center;justify-content:center;width:100%;min-height:48px;padding:.7rem 1rem;border-radius:.5rem;font-weight:900}.ios-chapter-ad__open{border:1px solid var(--accent);background:var(--accent);color:#fff;text-decoration:none}.ios-chapter-ad__continue{margin-top:.7rem;border:1px solid var(--border);background:var(--surface-soft);color:var(--accent-dark);cursor:pointer}.ios-chapter-ad__panel>small{display:block;margin-top:.8rem;color:var(--muted);font-size:.72rem}