:root{
  color-scheme: dark;
  --ink:#05090a;
  --ink-2:#0a1214;
  --ink-3:#101a1c;
  --fog:#8fa3a4;
  --fog-dim:#5d6f70;
  --paper:#dfe8e5;
  --teal:#0ea87b;
  --teal-lit:#3fdcaa;
  --amber:#ffd9a0;
  --line:rgba(143,163,164,.18);
  --ch:#0ea87b;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, "Roboto Mono", monospace;
  --serif: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --gutter: clamp(20px, 5vw, 72px);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--ink);color:var(--paper);
  font-family:var(--serif);-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px}

.grain{
  position:fixed;inset:-50%;z-index:60;pointer-events:none;opacity:.3;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
  animation:grainshift 700ms steps(2) infinite;mix-blend-mode:overlay;
}
@keyframes grainshift{0%{transform:translate(0,0)}50%{transform:translate(-2%,1%)}100%{transform:translate(1%,-1%)}}
/* one fixed stack: photo → signal → content. The sonar is a single object
   that carries from the intro, through the crash site, into the chapters. */
.backdrop{position:fixed;inset:0;z-index:-1;overflow:hidden}
.backdrop img{width:100%;height:100%;object-fit:cover;object-position:center 42%;filter:saturate(.72) contrast(1.06);will-change:transform}
.backdrop .fade{position:absolute;inset:0;background:
  radial-gradient(115% 78% at 50% 44%,rgba(5,9,10,.22) 18%,rgba(5,9,10,.8) 74%,var(--ink) 100%),
  linear-gradient(to bottom,rgba(5,9,10,.72) 0%,rgba(5,9,10,.2) 34%,rgba(5,9,10,.95) 95%)}
#signal{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;mix-blend-mode:screen}
main{position:relative;z-index:1}
#quiet,#note{position:relative;z-index:2;background:var(--ink)}
#quiet{background:var(--ink-2)}

.tele{font-family:var(--mono);font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--fog-dim)}
.tele-teal{color:var(--teal)}
.tele-amber{color:var(--amber)}
.display{font-family:var(--sans);font-weight:800;text-transform:uppercase;letter-spacing:-.03em;line-height:.86;margin:0;text-wrap:balance}
.narr{font-size:clamp(17px,1.35vw,20px);line-height:1.72;color:#c9d6d3;max-width:34em;margin:0 0 1.35em}
.narr strong{color:var(--paper);font-weight:600}

/* ---------- section 0: the transmission ---------- */
#transmission{
  min-height:100svh;display:grid;place-items:center;padding:calc(var(--gutter) + 40px) var(--gutter);
  position:relative;
}
#transmission .crt{
  position:fixed;inset:0;pointer-events:none;opacity:.3;z-index:1;
  background:repeating-linear-gradient(to bottom,rgba(223,232,229,.09) 0 1px,transparent 1px 3px);
  transition:opacity .8s;
}
#flash{position:fixed;inset:0;background:var(--paper);opacity:0;pointer-events:none;mix-blend-mode:screen;z-index:2}
#transmission .stack{position:relative;display:flex;flex-direction:column;align-items:center;gap:clamp(20px,3.4vh,36px);width:100%;max-width:640px}

#term{
  font-family:var(--mono);font-size:clamp(10px,1.05vw,12px);letter-spacing:.14em;
  text-transform:uppercase;color:var(--fog);line-height:2.15;
  width:100%;height:13.4em;text-align:left;   /* fixed — lines must never move the layout */
}
#term .ln{
  margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  opacity:0;transform:translateY(7px);
  animation:lnin .5s cubic-bezier(.16,.84,.28,1) forwards;
}
@keyframes lnin{to{opacity:1;transform:none}}
#term .ln.dim{color:var(--fog-dim)}
#term .ln.hot{color:var(--teal-lit)}
#term .ln.warn{color:var(--amber)}
#term .ln::before{content:"> ";color:var(--fog-dim)}
#term .ln.bare::before{content:"  "}
.caret{display:inline-block;width:.62em;height:1.05em;background:var(--teal-lit);vertical-align:-.16em;margin-left:.3em;animation:blink 1.05s steps(1) infinite;box-shadow:0 0 12px rgba(63,220,170,.6)}
@keyframes blink{0%,49%{opacity:1}50%,100%{opacity:0}}

#bootmark{
  position:relative;font-family:var(--sans);font-weight:800;text-transform:uppercase;
  font-size:clamp(34px,7.6vw,84px);letter-spacing:-.04em;line-height:1;color:var(--paper);
  opacity:0;transition:opacity .5s;white-space:nowrap;
}
#bootmark.on{opacity:1}
#bootmark .g{position:absolute;inset:0;color:var(--teal-lit);opacity:0;clip-path:inset(45% 0 40% 0);transform:translateX(-4px)}
#bootmark.glitch .g{opacity:.85;animation:slice .42s steps(3)}
@keyframes slice{
  0%{clip-path:inset(12% 0 76% 0);transform:translateX(-7px)}
  33%{clip-path:inset(62% 0 22% 0);transform:translateX(6px)}
  66%{clip-path:inset(38% 0 48% 0);transform:translateX(-3px)}
  100%{clip-path:inset(45% 0 40% 0);transform:translateX(0)}
}
#transmission .prompt{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;opacity:0;transition:opacity .8s ease}
#transmission .prompt.on{opacity:1}
#skip{
  position:absolute;right:0;bottom:26px;background:none;border:0;cursor:pointer;
  font-family:var(--mono);font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--fog-dim);
  opacity:1;transition:opacity .5s;
}
#skip.gone{opacity:0;pointer-events:none}
#skip:hover{color:var(--paper)}
/* the chrome stays out of the way until the transmission is behind you */
#hud,#stems,#mute{opacity:0;transition:opacity .8s ease;pointer-events:none}
body.past-intro #hud,body.past-intro #stems,body.past-intro #mute{opacity:1}
body.past-intro #stems,body.past-intro #mute{pointer-events:auto}
body.past-intro #hud a{pointer-events:auto}
.btn{
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  background:transparent;color:var(--paper);border:1px solid var(--line);
  padding:14px 22px;cursor:pointer;text-decoration:none;display:inline-block;
  transition:border-color .25s,color .25s,background .25s;
}
.btn:hover{border-color:var(--teal);color:var(--teal)}
.btn.primary{border-color:var(--teal);color:var(--teal)}
.btn.primary:hover{background:var(--teal);color:var(--ink)}
#transmission .fine{max-width:32em;text-align:center;font-size:12px;line-height:1.7;color:var(--fog-dim);font-family:var(--mono);letter-spacing:.04em;opacity:0;transition:opacity .8s ease .15s}
#transmission .prompt.on ~ .fine{opacity:1}

/* ---------- chrome ---------- */
#hud{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px var(--gutter) 34px;text-shadow:0 1px 14px rgba(5,9,10,.8);
  background:linear-gradient(to bottom,rgba(5,9,10,.82) 0%,rgba(5,9,10,.45) 55%,transparent 100%);
  pointer-events:none;
}
#hud a{pointer-events:auto;text-decoration:none}
#hud .brand{font-family:var(--sans);font-weight:800;text-transform:uppercase;letter-spacing:-.02em;font-size:15px}
#hud nav{display:flex;gap:22px;align-items:center}
#hud .tele{color:rgba(223,232,229,.72);transition:color .2s}
#hud nav a:hover .tele{color:var(--teal-lit)}
@media (max-width:720px){#hud nav a.hide-s{display:none}}

#mute{
  position:fixed;right:var(--gutter);bottom:22px;z-index:55;
  display:flex;align-items:center;gap:9px;background:rgba(5,9,10,.72);
  backdrop-filter:blur(6px);border:1px solid var(--line);padding:10px 14px;cursor:pointer;
}
#mute .dot{width:6px;height:6px;background:var(--teal);border-radius:50%;box-shadow:0 0 10px var(--teal)}
#mute.off .dot{background:var(--fog-dim);box-shadow:none}

/* ---------- stem rail ---------- */
#stems{
  position:fixed;left:var(--gutter);bottom:22px;z-index:55;
  background:rgba(5,9,10,.62);backdrop-filter:blur(6px);
  border:1px solid var(--line);padding:12px 15px;width:228px;
}
#stems .cap{display:flex;justify-content:space-between;gap:10px;margin-bottom:10px;align-items:baseline}
#stems .cap #nowch{color:var(--teal-lit);max-width:12em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.stem{display:grid;grid-template-columns:58px 1fr;align-items:center;gap:9px;margin-top:6px}
.stem span{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--fog-dim);transition:color .3s;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.stem.on span{color:var(--paper)}
.meter{height:2px;background:rgba(143,163,164,.16);position:relative;overflow:hidden}
.meter i{position:absolute;inset:0 auto 0 0;width:0%;background:var(--teal);transition:width .25s linear;box-shadow:0 0 8px rgba(14,168,123,.7)}
@media (max-width:720px){
  #stems{left:12px;right:12px;bottom:12px;width:auto;padding:9px 12px}
  #stems .cap{margin-bottom:7px}
  #stems .rows{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
  .stem{grid-template-columns:1fr;gap:5px;margin:0}
  #mute{right:12px;bottom:74px}
}

/* ---------- crash site ---------- */
#crash{min-height:100svh;display:flex;align-items:flex-end;position:relative}
#crash .content{position:relative;padding:0 var(--gutter) clamp(150px,20vh,200px);width:100%}
#crash h1{font-size:clamp(44px,9.4vw,138px);color:var(--paper);max-width:11em;text-shadow:0 4px 60px rgba(5,9,10,.5)}
#crash .sub{margin:22px 0 0;max-width:27em;font-size:clamp(16px,1.4vw,19px);line-height:1.6;color:#c6d3d1;text-shadow:0 1px 20px rgba(5,9,10,.9)}
#crash .coords{position:absolute;top:104px;right:var(--gutter);text-align:right;line-height:2.1;text-shadow:0 1px 12px rgba(5,9,10,.9)}
#crash .coords .tele{color:rgba(223,232,229,.66)}
#crash .content .tele-teal{color:var(--teal-lit);text-shadow:0 1px 16px rgba(5,9,10,.95)}
@media (max-width:720px){#crash .coords{display:none}}
.scrollcue{margin-top:34px;display:flex;align-items:center;gap:12px}
.scrollcue .tele{color:rgba(223,232,229,.8);text-shadow:0 1px 16px rgba(5,9,10,.95)}
.scrollcue .rule{width:54px;height:1px;background:var(--teal-lit);transform-origin:left;animation:pull 2.4s ease-in-out infinite}
@keyframes pull{0%,100%{transform:scaleX(.35)}50%{transform:scaleX(1)}}

/* ---------- chapters ---------- */
.chapter{padding:clamp(100px,15vh,180px) var(--gutter);position:relative}
.ch-head{display:flex;align-items:baseline;gap:18px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:16px;margin-bottom:clamp(34px,5vh,58px)}
.ch-head h2{font-family:var(--sans);font-weight:800;text-transform:uppercase;letter-spacing:-.02em;font-size:clamp(26px,3.4vw,46px);margin:0;line-height:1}
.ch-head .n{color:var(--ch)}
.ch-head .status{margin-left:auto}
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(28px,5vw,74px);align-items:start}
@media (max-width:900px){.split{grid-template-columns:1fr;gap:36px}}
.split.flip .ch-media{order:-1}
@media (max-width:900px){.split.flip .ch-media{order:0}}

.ch-media{position:relative}
.ch-media .shot{overflow:hidden;background:var(--ink-2)}
.ch-media .shot img{width:100%;filter:saturate(.78) contrast(1.04)}
.ch-media .shot.tall img{aspect-ratio:4/5;object-fit:cover}

/* release plate — the cover as an evidence tag */
.release{display:flex;gap:16px;align-items:flex-end;margin-top:-42px;margin-left:18px;position:relative;z-index:2}
.release .art{width:clamp(96px,11vw,132px);flex:none;position:relative}
.release .art img{width:100%;aspect-ratio:1;object-fit:cover;border:1px solid rgba(223,232,229,.22);box-shadow:0 18px 44px rgba(5,9,10,.75)}
.release .art::after{content:"";position:absolute;inset:-18%;background:radial-gradient(circle,var(--ch),transparent 68%);opacity:.28;z-index:-1;filter:blur(14px)}
.release .meta{padding-bottom:6px;display:flex;flex-direction:column;gap:6px}
.release .meta .t{font-family:var(--sans);font-weight:700;text-transform:uppercase;font-size:13px;letter-spacing:-.01em;line-height:1.2}
.release .meta a{font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--teal-lit);text-decoration:none;border-bottom:1px solid rgba(63,220,170,.35);padding-bottom:2px;align-self:flex-start}
.release .meta a:hover{color:var(--paper);border-color:var(--paper)}

.pull{font-family:var(--sans);font-weight:700;text-transform:uppercase;letter-spacing:-.02em;font-size:clamp(20px,2.7vw,36px);line-height:1.08;margin:clamp(46px,7vh,84px) 0 0;max-width:17em;color:var(--paper);text-wrap:balance}
.pull em{font-style:normal;color:var(--ch)}

/* ---------- the drop ---------- */
#ch-understandable{text-align:center;padding-bottom:clamp(120px,16vh,190px)}
#ch-understandable .ch-head{text-align:left}
#ch-understandable .lead{margin-left:auto;margin-right:auto}
.ring{position:relative;width:min(520px,84vw);aspect-ratio:1;margin:clamp(40px,6vh,70px) auto 0}
#spectrum{position:absolute;inset:0;width:100%;height:100%}
.ring .art{position:absolute;inset:23%;overflow:hidden;border:1px solid rgba(223,232,229,.2);box-shadow:0 24px 70px rgba(5,9,10,.8)}
.ring .art img{width:100%;height:100%;object-fit:cover}
.dropmeta{margin-top:clamp(34px,5vh,60px);display:flex;flex-direction:column;align-items:center;gap:16px}
.dropmeta .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:8px}

/* ---------- sealed chapter ---------- */
#ch-arenicola .sealedwrap{display:grid;grid-template-columns:auto 1fr;gap:clamp(26px,4vw,56px);align-items:center}
@media (max-width:760px){#ch-arenicola .sealedwrap{grid-template-columns:1fr}}
#ch-arenicola .art{width:clamp(150px,20vw,240px);position:relative}
#ch-arenicola .art img{width:100%;aspect-ratio:1;object-fit:cover;filter:grayscale(.6) brightness(.42) contrast(1.1);border:1px solid var(--line)}
#ch-arenicola .art .stamp{position:absolute;inset:0;display:flex;align-items:flex-end;padding:14px}
#ch-arenicola .art .stamp span{font-family:var(--mono);font-size:9.5px;letter-spacing:.3em;text-transform:uppercase;color:var(--fog);border:1px solid var(--line);padding:7px 11px;background:rgba(5,9,10,.72)}

/* ---------- archive ---------- */
#archive{padding:clamp(100px,15vh,180px) var(--gutter);border-top:1px solid var(--line)}
.chaps{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin-top:38px}
.chap{background:var(--ink);padding:18px;display:flex;flex-direction:column;gap:16px;position:relative;transition:background .35s;text-decoration:none}
.chap.live:hover{background:var(--ink-3)}
.chap .thumb{aspect-ratio:1;overflow:hidden;background:var(--ink-2);position:relative}
.chap .thumb img{width:100%;height:100%;object-fit:cover}
.chap.locked .thumb img{filter:grayscale(.7) brightness(.35)}
.chap.next .thumb img{filter:brightness(.72)}
.chap h3{font-family:var(--sans);font-weight:700;text-transform:uppercase;letter-spacing:-.01em;font-size:15px;margin:0;line-height:1.15}
.chap p{margin:6px 0 0;font-size:12.5px;line-height:1.55;color:var(--fog)}
.chap.locked h3,.chap.locked p{color:var(--fog-dim)}
.chap .state{display:flex;align-items:center;gap:8px;margin-top:auto}
.blip{width:5px;height:5px;border-radius:50%;background:var(--teal);flex:none}
.chap.next .blip{background:var(--amber);animation:blip 2.6s ease-in-out infinite}
.chap.locked .blip{background:var(--fog-dim)}
@keyframes blip{0%,100%{opacity:.25;transform:scale(1)}50%{opacity:1;transform:scale(1.5)}}

/* ---------- the humans ---------- */
#humans{padding:clamp(90px,13vh,160px) var(--gutter);border-top:1px solid var(--line);position:relative;z-index:2;background:var(--ink)}
.humanwrap{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:center}
@media (max-width:900px){.humanwrap{grid-template-columns:1fr;gap:32px}}
#humans img{width:100%;aspect-ratio:4/3;object-fit:cover;filter:saturate(.92) contrast(1.02)}
#humans .narr{font-size:clamp(16px,1.2vw,18px)}

/* ---------- quiet layer ---------- */
#quiet{padding:clamp(90px,13vh,160px) var(--gutter);background:var(--ink-2);border-top:1px solid var(--line)}
#quiet .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:clamp(28px,4vw,56px);margin-top:32px}
#quiet h4{font-family:var(--mono);font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--fog-dim);margin:0 0 14px;font-weight:400}
#quiet p,#quiet li{font-size:15px;line-height:1.75;color:#c2cfcd;margin:0 0 10px}
#quiet ul{list-style:none;padding:0;margin:0}
#quiet a{text-decoration:none;border-bottom:1px solid var(--line);padding-bottom:2px}
#quiet a:hover{border-color:var(--teal);color:var(--teal)}

/* ---------- footer ---------- */
/* the bottom padding clears the fixed stem rail, which is 100 px tall at its
   worst and sits 22 px off the bottom */
#note{padding:clamp(60px,8vh,90px) var(--gutter) 190px;border-top:1px solid var(--line);background:var(--ink)}
#note .foot{display:flex;flex-wrap:wrap;gap:24px 48px;align-items:flex-end;justify-content:space-between}
#note .foot p{margin:0}
#note .brandline{font-family:var(--sans);font-weight:800;text-transform:uppercase;letter-spacing:-.02em;font-size:15px;margin-bottom:6px}
#note nav{display:flex;gap:22px}
#note nav a{text-decoration:none}
#note nav a:hover .tele{color:var(--teal-lit)}

/* Not wired up yet. Visible while the site is in review, invisible in intent —
   see web/CHECKLIST.md. Delete this rule when nothing carries data-pending. */
a[data-pending]:not(.btn){text-decoration:underline dotted rgba(255,217,160,.45);text-underline-offset:4px}
a.btn[data-pending]{border-style:dashed}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .9s cubic-bezier(.16,.84,.28,1),transform .9s cubic-bezier(.16,.84,.28,1)}
.rv.in{opacity:1;transform:none}
.rv[data-d="1"]{transition-delay:.09s}
.rv[data-d="2"]{transition-delay:.18s}
.rv[data-d="3"]{transition-delay:.27s}
.word{display:inline-block;overflow:hidden;vertical-align:top}
.word i{display:inline-block;font-style:normal;transform:translateY(105%);transition:transform .95s cubic-bezier(.16,.84,.28,1)}
.in .word i{transform:none}

/* ---------- no JS ---------- */
/* main.js adds .js to <html> as its first act, so anything that stops the
   modules running leaves these rules in charge: JS switched off, a browser too
   old for modules, a failed request — and opening index.html straight off the
   filesystem, where ES modules are CORS-blocked and nothing loads at all.
   Without this the page is a dark screen: every .rv element sits at opacity 0
   waiting for an observer that never runs, and the backdrop never gets the
   scroll-driven opacity that keeps the crash site behind the text.
   The story is real DOM text, so there is a readable page underneath — this
   just uncovers it. */
:root:not(.js) .rv{opacity:1;transform:none}
:root:not(.js) .backdrop{opacity:.5}
:root:not(.js) #transmission,
:root:not(.js) #stems,
:root:not(.js) #mute,
:root:not(.js) .grain{display:none}   /* the entrance and the audio chrome are
                                         JS by definition — showing dead
                                         controls is worse than showing none */
:root:not(.js) #hud{opacity:1}
:root:not(.js) #hud a{pointer-events:auto}

/* There is deliberately no `prefers-reduced-motion` block. Every visitor gets
   the same page — the reasoning, and what to gate first if that is ever
   reversed, is at the top of assets/js/util.js. */