:root {
  --dark-star-night: #000;
  --dark-star-ink: #f5f1eb;
  --dark-star-muted: #aaa5b2;
  --dark-star-gold: #f4c45e;
  --dark-star-violet: #9b6cff;
  --dark-star-display: "Syne", system-ui, sans-serif;
  --dark-star-mono: "IBM Plex Mono", "Courier New", monospace;
}

.dark-star-intro {
  position: relative;
  isolation: isolate;
  display: grid;
  box-sizing: border-box;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  color: var(--dark-star-ink) !important;
  background: #000;
  font-family: var(--dark-star-mono);
}

.dark-star-intro *, .dark-star-intro *::before, .dark-star-intro *::after { box-sizing: border-box; }

.dark-star-intro__stage,
.dark-star-intro__host,
.dark-star-intro__fallback,
.dark-star-intro__grain,
.dark-star-intro__vignette { position: absolute; inset: 0; }

.dark-star-intro__stage { z-index: 0; background: #000; }
.dark-star-intro__host { z-index: 2; opacity: 0; transition: opacity .8s ease; }
.dark-star-intro[data-dark-star-state="live"] .dark-star-intro__host { opacity: 1; }
.dark-star-intro[data-dark-star-state="reduced"] .dark-star-intro__host { opacity: 1; }
.dark-star-intro__host canvas { display: block; width: 100%; height: 100%; touch-action: none; cursor: grab; }
.dark-star-intro__host canvas:active { cursor: grabbing; }

.dark-star-intro__fallback { z-index: 1; overflow: hidden; background: #000; transition: opacity .8s ease; }
.dark-star-intro[data-dark-star-state="live"] .dark-star-intro__fallback { opacity: 0; }
.dark-star-intro[data-dark-star-state="reduced"] .dark-star-intro__fallback { opacity: 0; }

.dark-star-static__character-frame {
  position: absolute;
  top: 26%;
  left: 0;
  height: 62%;
  aspect-ratio: 1183 / 1330;
  overflow: visible;
}

.dark-star-static__asiphyx {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: fill;
  mix-blend-mode: screen;
  filter: saturate(.9) contrast(1.04) drop-shadow(0 0 26px rgba(84, 42, 145, .2));
}

.dark-star-static__spectrum {
  position: absolute;
  z-index: -1;
  left: var(--dark-star-fingertip-left);
  top: var(--dark-star-fingertip-top);
  width: clamp(320px, 42vw, 640px);
  height: clamp(34px, 7vh, 66px);
  transform: translateY(-50%) rotate(-5.5deg);
  transform-origin: left center;
  clip-path: polygon(0 48%, 100% 0, 100% 100%, 0 52%);
  background: repeating-linear-gradient(0deg, rgba(255,79,163,.86) 0 2px, rgba(155,108,255,.82) 3px 5px, rgba(57,217,255,.82) 6px 8px, rgba(255,138,61,.8) 9px 11px, rgba(244,196,94,.84) 12px 14px);
  filter: saturate(1.2) drop-shadow(0 0 7px rgba(155,108,255,.62));
}

.dark-star-static__singularity {
  position: absolute;
  z-index: 2;
  left: var(--dark-star-fingertip-left);
  top: var(--dark-star-fingertip-top);
  width: clamp(22px, 2.5vw, 36px);
  aspect-ratio: 1;
  translate: -50% -50%;
  border-radius: 50%;
  background: #000;
  box-shadow: 0 0 0 2px rgba(247,179,83,.84), 0 0 20px 6px rgba(132,94,255,.62);
}

.dark-star-static__core {
  position: absolute;
  left: 69%;
  top: 34%;
  width: clamp(74px, 12vw, 156px);
  aspect-ratio: 1;
  border: 1px solid rgba(244, 196, 94, .45);
  clip-path: polygon(50% 0, 79% 10%, 98% 35%, 98% 65%, 79% 90%, 50% 100%, 21% 90%, 2% 65%, 2% 35%, 21% 10%);
  background:
    radial-gradient(circle, #000 0 32%, transparent 34%),
    conic-gradient(from 10deg, #ff4fa3, #9b6cff, #39d9ff, #ff8a3d, #f4c45e, #ff4fa3);
  box-shadow: 0 0 38px rgba(101, 62, 170, .14), inset 0 0 28px #000;
  transform: translate(-50%, -50%) rotate(8deg);
}

.dark-star-static__core::before,
.dark-star-static__core::after {
  content: "";
  position: absolute;
  inset: 15%;
  border: 1px solid rgba(255, 255, 255, .26);
  transform: rotate(31deg);
}
.dark-star-static__core::after { inset: 33%; border-color: rgba(244, 196, 94, .62); transform: rotate(61deg); }

.dark-star-static__prism {
  position: absolute;
  z-index: 2;
  left: 69%;
  top: 34%;
  width: clamp(52px, 7vw, 108px);
  aspect-ratio: 1.05;
  translate: -50% -50%;
  clip-path: polygon(50% 0, 100% 88%, 0 88%);
  background: linear-gradient(118deg, rgba(255,255,255,.72), rgba(154,179,213,.16) 42%, rgba(248,251,255,.68));
  filter: drop-shadow(0 0 9px rgba(219,233,255,.68));
}

.dark-star-static__source { position: absolute; display: block; height: 1px; transform-origin: right center; }
.dark-star-static__source {
  right: 0;
  top: 34%;
  width: 26%;
  background: linear-gradient(90deg, rgba(255,255,255,.95), rgba(238,244,255,.84) 70%, transparent);
  box-shadow: 0 0 5px #fff, 0 0 19px rgba(207,220,255,.5);
}

.dark-star-intro__grain, .dark-star-intro__vignette { z-index: 3; pointer-events: none; }
.dark-star-intro__grain {
  inset: -50%;
  width: 200%; height: 200%;
  opacity: .045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.92' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: dark-star-grain 11s steps(5) infinite;
}
.dark-star-intro__vignette {
  background:
    linear-gradient(90deg, rgba(0,0,0,.22), transparent 38%, transparent 73%, rgba(0,0,0,.34)),
    radial-gradient(ellipse 120% 92% at 55% 38%, transparent 48%, rgba(0,0,0,.68) 100%),
    linear-gradient(to bottom, rgba(0,0,0,.5), transparent 18%, transparent 74%, #000 100%);
}

.dark-star-intro__copy {
  position: relative;
  z-index: 4;
  display: flex;
  min-height: 100vh;
  min-height: 100svh;
  flex-direction: column;
  justify-content: space-between;
  width: min(100% - 48px, 1320px);
  margin: 0 auto;
  padding: max(28px, env(safe-area-inset-top)) 0 max(28px, env(safe-area-inset-bottom));
  pointer-events: none;
}
.dark-star-intro__kicker, .dark-star-intro__truth, .dark-star-intro__enter { pointer-events: auto; }

/* Soundscape control, parked above the character's head. It is anchored to the
   section rather than to the artwork on purpose: .dark-star-intro__stage is
   aria-hidden, and the static fallback inside it is faded to 0 as soon as WebGL
   mounts, so a control living in the frame would be invisible in the state most
   visitors actually get. Position comes from --dark-star-head-*, published by
   assets/dark-star-head-anchor-2026-07-30-v1.js off the SAME layout function the
   renderer uses. The fallback values are the desktop live layout, so an anchor
   script failure degrades to "roughly right" instead of "top-left corner". */
html[data-theme] .dark-star-intro__soundscape, .dark-star-intro__soundscape {
  position: absolute;
  left: var(--dark-star-head-left, 11%);
  top: var(--dark-star-head-top, 26%);
  z-index: 5;
  min-height: 34px;
  translate: -50% calc(-100% - 16px);
  padding: 9px 13px;
  border: 1px solid rgba(244, 196, 94, .5);
  border-radius: 0;
  background: rgba(0, 0, 0, .58);
  color: var(--dark-star-ink) !important;
  font: 500 10px/1 var(--dark-star-mono);
  letter-spacing: .18em;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}
.dark-star-intro__soundscape:hover { border-color: #fff; background: rgba(0, 0, 0, .78); color: #fff !important; }
.dark-star-intro__soundscape:focus-visible { outline: 3px solid #fff; outline-offset: 4px; }
.dark-star-intro__kicker { margin: 0; color: var(--dark-star-muted); font: 500 10px/1.5 var(--dark-star-mono); letter-spacing: .28em; text-transform: uppercase; }

html body .dark-star-intro .dark-star-intro__title {
  width: min(100%, 11ch);
  margin: auto 0 clamp(30px, 7vh, 78px);
  color: var(--dark-star-ink) !important;
  /* 400, not 250. The shipped Syne is requested as `wght@400..800`
     (_ds/bw-paper/styles.css), so 250 is outside the variable axis. A visitor
     with a fresh font clamps it to 400 and sees this correctly; a visitor still
     holding the `wght@200..800` Syne this site served earlier on 2026-07-30
     renders a true 250 hairline, which on the pure-black stage reads as dim
     grey rather than white. Reported from a real browser 2026-07-30 and not
     reproducible in headless, because headless had the current font. Declaring
     an in-axis weight makes the render identical regardless of which Syne the
     visitor has cached. */
  font: 400 clamp(58px, 10.4vw, 148px)/.84 var(--dark-star-display);
  letter-spacing: -.07em;
  text-wrap: balance;
  text-shadow: 0 2px 22px #000, 0 0 48px rgba(0,0,0,.95);
}
.dark-star-intro__line { display: block; overflow: hidden; padding: .05em 0 .1em; }
.dark-star-intro__line > span { display: inline-block; }
.dark-star-intro__mark { color: #fff !important; font-weight: 650; }
.dark-star-intro__air { color: var(--dark-star-gold); text-shadow: 0 0 18px rgba(244,196,94,.55); }

.dark-star-threshold-visible .cait-utility-dock { visibility: hidden !important; opacity: 0 !important; pointer-events: none !important; }

.dark-star-intro__foot { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 30px; align-items: end; }
.dark-star-intro__truth { max-width: 58ch; margin: 0; color: var(--dark-star-muted); font: 400 10px/1.65 var(--dark-star-mono); letter-spacing: .08em; text-transform: uppercase; text-shadow: 0 2px 12px #000; }
html[data-theme] .dark-star-intro__enter, .dark-star-intro__enter {
  display: inline-flex; align-items: center; gap: 14px; min-height: 46px; padding: 8px 0 8px 18px;
  border-left: 1px solid rgba(244,196,94,.58); color: var(--dark-star-ink) !important;
  font: 500 10px/1 var(--dark-star-mono); letter-spacing: .26em; text-transform: uppercase; text-decoration: none;
  transition: border-color .2s ease, color .2s ease;
}
.dark-star-intro__enter::after { content: "↓"; color: var(--dark-star-gold); font-size: 18px; }
.dark-star-intro__enter:hover { border-left-color: #fff; color: #fff !important; }
.dark-star-intro__enter:focus-visible { outline: 3px solid #fff; outline-offset: 5px; }

#archive-entry { scroll-margin-top: 0; }
#archive-entry:focus { outline: none; }
#archive-entry:focus-visible { outline: 3px solid var(--color-accent, #8b6bff); outline-offset: -3px; }

@keyframes dark-star-grain { 0%{transform:translate(0)} 25%{transform:translate(2%,-3%)} 50%{transform:translate(-3%,2%)} 75%{transform:translate(3%,4%)} 100%{transform:translate(-1%,-2%)} }

@media (max-width: 600px) {
  .dark-star-intro__copy { width: calc(100% - 28px); padding-top: max(18px, env(safe-area-inset-top)); padding-bottom: max(20px, calc(env(safe-area-inset-bottom) + 58px)); }
  .dark-star-intro__kicker { font-size: 8px; letter-spacing: .2em; }
  html body .dark-star-intro .dark-star-intro__title { width: 100%; margin: auto 0 22px; font-size: clamp(48px, 17vw, 74px); line-height: .88; }
  .dark-star-intro__foot { grid-template-columns: 1fr; gap: 14px; }
  .dark-star-intro__truth { max-width: 39ch; font-size: 8px; line-height: 1.55; }
  .dark-star-intro__enter { justify-self: start; min-height: 38px; font-size: 9px; }
  .dark-star-static__asiphyx { top: 6%; left: -13%; width: 105%; height: auto; max-height: 49%; object-fit: contain; object-position: left top; }
  .dark-star-static__core { left: 77%; top: 29%; width: clamp(70px, 25vw, 104px); }
  .dark-star-static__source { top: 29%; width: 18%; }
  .dark-star-static__filament { left: 61%; top: calc(29% + var(--offset)); width: 14%; }
}

@media (max-height: 430px) {
  .dark-star-intro__copy { width: calc(100% - 30px); padding: 14px 0 12px; }
  .dark-star-intro__kicker { font-size: 7px; letter-spacing: .16em; }
  html body .dark-star-intro .dark-star-intro__title { width: 7.8ch; margin: auto 0 8px; font-size: clamp(38px, 10.5vw, 57px); line-height: .84; }
  .dark-star-intro__foot { grid-template-columns: minmax(0,1fr) auto; gap: 14px; }
  .dark-star-intro__truth { max-width: 47ch; font-size: 6.5px; line-height: 1.45; }
  .dark-star-intro__enter { min-height: 32px; font-size: 7px; padding-left: 10px; }
  .dark-star-static__asiphyx { top: 2%; left: 0; width: auto; height: 92%; max-height: none; }
  .dark-star-static__core { left: 70%; top: 36%; width: min(24vh, 92px); }
  .dark-star-static__source { top: 36%; width: 26%; }
  .dark-star-static__filament { left: 55%; top: calc(36% + var(--offset)); width: 14%; }
}

@media (prefers-reduced-motion: reduce) {
  .dark-star-intro__grain { animation: none; }
  .dark-star-intro__fallback, .dark-star-intro__line > span, .dark-star-intro__kicker, .dark-star-intro__foot { opacity: 1 !important; transform: none !important; transition: none !important; }
  .dark-star-intro__host { display: block; transition: none; }
}