/* A single pinned book opening leads into the existing incident film. */
.header{position:absolute;top:0;left:0;width:100%;color:#e5ecec;z-index:30}
.header .nav-inner{border-color:#c0d0d32b}.header .brand svg{fill:currentColor}.header .nav-buy{border-color:#c0d0d34a}.header nav>a:hover{color:#fff}
.book-prologue{position:relative;z-index:2;height:580svh;background:#121e29}
.prologue-stage{position:sticky;top:0;height:100svh;min-height:600px;overflow:hidden;isolation:isolate;color:#edf0ec;background:#121e29}
.prologue-room{position:absolute;inset:0;background:linear-gradient(90deg,#11203050,#10202ddb 60%,#11202ff5),url('/assets/editorial/desk-evening.webp') left 38%/cover no-repeat;opacity:.65;pointer-events:none}
.prologue-canvas{position:absolute;inset:0;z-index:2;pointer-events:none}
.prologue-canvas canvas{display:block;width:100%;height:100%}
.prologue-fallback{position:absolute;width:25%;max-height:65%;object-fit:contain;left:15%;top:20%;filter:drop-shadow(14px 30px 25px #02070eaa)}
.prologue-canvas.is-ready .prologue-fallback{display:none}
.prologue-intro{position:absolute;left:54%;right:5%;top:50%;transform:translateY(-46%);z-index:4;max-width:660px}
.prologue-eyebrow{font-size:14px;line-height:1.6;color:#b8c8cd;margin-bottom:28px}
.prologue-intro h1{font-size:clamp(46px,5.2vw,84px);font-weight:450;letter-spacing:-.06em;line-height:1.05}
.prologue-sre{font-size:19px;letter-spacing:.03em;display:block;margin-bottom:17px;color:#aebfc5}
.prologue-description{font-size:17px;line-height:1.7;max-width:430px;margin-top:28px;color:#ccd7d9;text-wrap:pretty}
.prologue-actions{display:flex;gap:26px;align-items:center;margin-top:30px;font-size:14px}
.prologue-read{background:#eef1ec;color:#193640;border:0}
.prologue-actions>a{border-bottom:1px solid #bfced277;padding-block:5px}
.prologue-authors{font-size:13px;color:#c3d0d1;margin-top:34px}.prologue-authors span{display:block;font-size:12px;color:#95a9b1;margin-top:5px}
.prologue-footer{position:absolute;bottom:32px;left:4.2%;right:4.2%;display:flex;align-items:center;justify-content:space-between;gap:20px;z-index:4;font-size:13px;color:#c5d2d7}
.prologue-scroll::before{content:'↓';margin-right:12px}.prologue-footer>a{font-size:12px;border-bottom:1px solid #b9ccd13d;padding-block:5px}
.prologue-page{position:absolute;left:50%;transform:translateX(-50%);color:#dbe3df}
.prologue-handoff{position:absolute;inset:0;opacity:1;z-index:5;pointer-events:none;color:#f5f4ee}
.prologue-handoff .cinema-vignette{inset:0}
.book-prologue + .incident-film{margin-top:-100svh;z-index:1}
.book-prologue.has-finished{pointer-events:none}
.book-prologue.has-finished .prologue-stage{opacity:0}
@media(min-width:1800px){.prologue-intro{left:55%}}
@media(max-width:1000px) and (min-width:761px){.prologue-intro{left:52%;right:4%}.prologue-intro h1{font-size:49px}.prologue-description{font-size:16px}.prologue-actions{gap:16px;flex-wrap:wrap}}
@media(max-width:760px){
 .header{height:64px}.header .nav-inner{gap:12px}.header .nav-buy{padding:10px 13px}
 .header nav>a.nav-services{display:inline;font-size:12px}
 .book-prologue{height:550svh}
 .prologue-room{background-position:center 45%;opacity:.4}
 .prologue-intro{left:20px;right:20px;top:88px;transform:none;max-width:none;text-align:left}
 .prologue-eyebrow{font-size:12px;line-height:1.5;margin-bottom:14px}
 .prologue-sre{display:block;font-size:14px;line-height:1.3;letter-spacing:.02em;margin:0 0 7px;color:#b8c8cd}
 .prologue-intro h1{font-size:clamp(32px,9.2vw,40px);line-height:1.06;letter-spacing:-.055em}
 .prologue-description{font-size:14px;line-height:1.55;margin-top:18px;max-width:440px}
 .prologue-actions{gap:20px;margin-top:18px;font-size:13px;white-space:nowrap}
 .prologue-read{font-size:13px;padding:12px 20px;min-height:46px;flex-shrink:0}
 .prologue-actions>a{display:inline-flex;align-items:center;min-height:44px}
 .prologue-authors{display:none}
 .prologue-footer{left:20px;right:20px;bottom:max(16px,env(safe-area-inset-bottom));gap:14px;font-size:11px;line-height:1.4}
 .prologue-scroll{display:flex;align-items:center;max-width:205px}
 .prologue-scroll::before{margin-right:9px;flex-shrink:0}
 .prologue-footer>a{font-size:11px;white-space:nowrap;flex-shrink:0;padding-block:12px}
 .prologue-page{left:0;transform:none;bottom:46px;font-size:12px}
 .prologue-fallback{width:40%;height:40%;max-height:none;top:51%;left:30%}
}
@media(max-width:380px){
 .prologue-actions{gap:15px;font-size:12px}.prologue-read{padding-inline:17px;font-size:12px}
 .prologue-eyebrow{font-size:11px}.prologue-footer{gap:10px}
}
@media(max-width:760px) and (max-height:700px){
 .prologue-intro{top:84px}.prologue-eyebrow{display:none}
 .prologue-intro h1{font-size:32px}.prologue-description{margin-top:14px;line-height:1.5}
 .prologue-actions{margin-top:16px}
}
@media(max-width:350px){
 .header nav>a.nav-services{display:none}.header .brand{white-space:nowrap}
}
@media(max-width:760px) and (max-height:600px){
 .prologue-description{font-size:13px}.prologue-intro h1{font-size:30px}
}
@media(prefers-reduced-motion:reduce){.book-prologue{height:100svh;min-height:680px}.book-prologue + .incident-film{margin-top:0}.prologue-scroll{display:none}.prologue-footer{justify-content:flex-end}}
.book-prologue.no-webgl{height:100svh;min-height:680px}.book-prologue.no-webgl + .incident-film{margin-top:0}
.book-prologue.no-webgl .prologue-scroll{display:none}

.book-prologue.has-finished{background:transparent}

/* One overlay moves between equally sized hosts; its contents never get replaced. */
.prologue-handoff .cinema-overlay{pointer-events:none}
.prologue-handoff .cinema-overlay:not([inert]) a,.prologue-handoff .cinema-overlay:not([inert]) button{pointer-events:auto}
/* Identical stage dimensions also prevent a camera jump in short windows. */
:root{--narrative-height:max(100svh,600px)}
.prologue-stage,.cinema-stage{height:var(--narrative-height);min-height:0}
.book-prologue + .incident-film{margin-top:calc(-1 * var(--narrative-height))}
@media(max-width:760px){:root{--narrative-height:max(100svh,560px)}}
@media(prefers-reduced-motion:reduce){.book-prologue{height:var(--narrative-height);min-height:0}.book-prologue + .incident-film{margin-top:0}}
.book-prologue.no-webgl{height:var(--narrative-height);min-height:0}.book-prologue.no-webgl + .incident-film{margin-top:0}