/*
 * SIMT Space landing. Hand-written; published verbatim at /styles/landing.css.
 *
 * Performance contract: everything that moves forever moves with `transform` or
 * `opacity` on its own element, so the compositor carries it. Nothing animates
 * a filter, a blur, a size or a layout property. Loops pause when their section
 * leaves the viewport ([data-animate] without [data-in-view]) and stop entirely
 * under prefers-reduced-motion. Layout is written in logical properties, so the
 * Arabic page mirrors without a stylesheet of its own.
 */

@font-face {
  font-family: "Space Grotesk"; font-style: normal; font-weight: 300 700; font-display: swap;
  src: url("/fonts/cosmos/space-grotesk-latin-wght-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Space Grotesk"; font-style: normal; font-weight: 300 700; font-display: swap;
  src: url("/fonts/cosmos/space-grotesk-latin-ext-wght-normal.woff2") format("woff2");
  unicode-range: U+0100-02FF, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Source Sans 3"; font-style: normal; font-weight: 200 900; font-display: swap;
  src: url("/fonts/cosmos/source-sans-3-latin-wght-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Source Sans 3"; font-style: normal; font-weight: 200 900; font-display: swap;
  src: url("/fonts/cosmos/source-sans-3-latin-ext-wght-normal.woff2") format("woff2");
  unicode-range: U+0100-02FF, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "El Messiri"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("/fonts/cosmos/el-messiri-arabic-400-normal.woff2") format("woff2");
  unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+08A0-08FF, U+200C-200E, U+FB50-FDFF, U+FE70-FEFC;
}
@font-face {
  font-family: "El Messiri"; font-style: normal; font-weight: 600; font-display: swap;
  src: url("/fonts/cosmos/el-messiri-arabic-600-normal.woff2") format("woff2");
  unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+08A0-08FF, U+200C-200E, U+FB50-FDFF, U+FE70-FEFC;
}

:root {
  color-scheme: dark;
  --void: #07040a;
  --ink: #fff8f2;
  --muted: #cdbfcc;
  --faint: #a798a6;
  --line: rgb(255 248 242 / 0.12);
  --gold: #ffc766;
  --ember: #ff8c42;
  --rose: #ff7e8a;
  --violet: #c9a0ff;
  --cyan: #00e5ff;
  --display: "Space Grotesk", system-ui, sans-serif;
  --text: "Source Sans 3", system-ui, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  --label: var(--mono);
  --tracking: 0.18em;
  --gutter: clamp(20px, 5vw, 72px);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Arabic is cursive: no tracking, no case, and one family that carries both weights. */
:root:lang(ar) {
  --display: "El Messiri", "Space Grotesk", system-ui, sans-serif;
  --text: "El Messiri", "Source Sans 3", system-ui, sans-serif;
  --label: var(--display);
  --tracking: 0;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

/* The fallback sky: a few tiled stars painted by the root, for a page without script. */
html {
  background-color: var(--void);
  background-image:
    radial-gradient(1.2px 1.2px at 24px 38px, rgb(255 248 242 / 0.9) 50%, transparent 52%),
    radial-gradient(1px 1px at 130px 92px, rgb(255 222 186 / 0.7) 50%, transparent 52%),
    radial-gradient(1.4px 1.4px at 210px 170px, rgb(201 160 255 / 0.8) 50%, transparent 52%),
    radial-gradient(1px 1px at 70px 230px, rgb(255 248 242 / 0.6) 50%, transparent 52%),
    radial-gradient(1px 1px at 300px 40px, rgb(150 236 255 / 0.7) 50%, transparent 52%),
    radial-gradient(1.6px 1.6px at 90px 120px, rgb(255 199 102 / 0.8) 50%, transparent 52%);
  background-size: 340px 300px, 340px 300px, 340px 300px, 340px 300px, 340px 300px, 520px 460px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--text);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
:root:lang(ar) body { font-size: 1.125rem; line-height: 1.8; }

a { color: inherit; }
img, svg { display: block; }

.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}
.skip {
  position: absolute; z-index: 30; inset-inline-start: 16px; top: 16px;
  padding: 12px 18px; border-radius: 999px; background: var(--ink); color: var(--void);
  font: 600 0.9375rem/1 var(--display); text-decoration: none;
  transform: translateY(-200%);
}
.skip:focus { transform: none; }

/* ------------------------------------------------------------------ layers */

.sky { position: fixed; top: 0; left: 0; z-index: -2; width: 100%; height: 100vh; height: 100lvh; display: none; }
.js .sky { display: block; }

.nebula {
  position: fixed; inset: -12%; z-index: -1; pointer-events: none;
  background:
    radial-gradient(38% 32% at 78% 20%, rgb(201 160 255 / 0.14), transparent 70%),
    radial-gradient(34% 30% at 14% 72%, rgb(255 126 138 / 0.09), transparent 70%),
    radial-gradient(52% 38% at 50% 112%, rgb(255 140 66 / 0.11), transparent 70%),
    radial-gradient(28% 24% at 30% 18%, rgb(0 229 255 / 0.05), transparent 70%);
  animation: k-nebula 70s ease-in-out infinite alternate;
}

.hud { position: fixed; inset: 0; z-index: 4; pointer-events: none; }
.hud__corner { position: absolute; width: 22px; height: 22px; border: 0 solid rgb(255 248 242 / 0.3); }
.hud__corner:nth-child(1) { top: 14px; left: 14px; border-width: 1px 0 0 1px; }
.hud__corner:nth-child(2) { top: 14px; right: 14px; border-width: 1px 1px 0 0; }
.hud__corner:nth-child(3) { bottom: 14px; right: 14px; border-width: 0 1px 1px 0; }
.hud__corner:nth-child(4) { bottom: 14px; left: 14px; border-width: 0 0 1px 1px; }
.hud__readout {
  position: absolute; bottom: max(16px, env(safe-area-inset-bottom)); margin: 0; display: none;
  font: 500 0.6875rem/1 var(--mono); letter-spacing: 0.12em; color: rgb(255 248 242 / 0.5); white-space: nowrap;
}
.js .hud__readout { display: block; }
.hud__readout > span { display: flex; gap: 18px; }
.hud__readout.is-start { inset-inline-start: 48px; }
.hud__readout.is-end { inset-inline-end: 48px; }
.hud b { font-weight: 500; color: rgb(255 248 242 / 0.85); font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------- masthead */

.masthead {
  position: absolute; z-index: 10; inset: 0 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: max(20px, env(safe-area-inset-top)) var(--gutter) 0;
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font: 500 1.0625rem/1 var(--display); }
.brand img { border-radius: 10px; }
.brand b { font-weight: 600; color: var(--gold); }
.brand:focus-visible, .langs a:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; border-radius: 12px; }
.langs ul {
  display: flex; gap: 2px; margin: 0; padding: 4px; list-style: none;
  border: 1px solid var(--line); border-radius: 999px; background: rgb(7 4 10 / 0.6);
}
.langs a {
  display: block; padding: 8px 12px; border-radius: 999px;
  color: var(--muted); text-decoration: none; font: 500 0.8125rem/1.1 var(--display);
  transition: color 0.2s, background-color 0.2s;
}
.langs a:lang(ar) { font-family: "El Messiri", var(--display); }
.langs__code { display: none; font-family: var(--mono); letter-spacing: 0.08em; }
.langs a:hover { color: var(--ink); background: rgb(255 248 242 / 0.08); }
.langs a[aria-current="page"] { color: var(--void); background: var(--ink); }

/* ------------------------------------------------------------------ shared */

.eyebrow {
  display: inline-flex; align-items: center; gap: 12px; margin: 0;
  font: 500 0.75rem/1.3 var(--label); letter-spacing: var(--tracking); text-transform: uppercase; color: var(--gold);
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: linear-gradient(to left, transparent, var(--gold)); }
[dir="rtl"] .eyebrow::before { background: linear-gradient(to right, transparent, var(--gold)); }

.button {
  display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 0 22px;
  border: 1px solid rgb(255 248 242 / 0.24); border-radius: 999px; background: rgb(255 248 242 / 0.06);
  color: var(--ink); font: 500 1rem/1 var(--display); text-decoration: none; cursor: pointer;
  transition: background-color 0.3s, border-color 0.3s;
}
.button:hover { background: rgb(255 248 242 / 0.12); border-color: rgb(255 248 242 / 0.42); }
.button:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.button.is-ghost { background: transparent; }
.button__icon { display: inline-block; animation: k-bob 2.4s ease-in-out infinite; }

/* -------------------------------------------------------------------- hero */

.stage { position: relative; }

.hero {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: minmax(0, 1fr); align-content: center; gap: 12px;
  min-height: 100vh; min-height: 100svh; max-width: 1440px; margin-inline: auto;
  padding: 104px var(--gutter) 72px;
  overflow-x: clip;
}
.hero__copy { position: relative; z-index: 2; max-width: 40rem; }
/* Sized so the longest translated line (≈7.4em) never breaks inside the column. */
.hero__title { margin: 18px 0 22px; font: 600 clamp(2.5rem, 11vw, 5.25rem)/0.94 var(--display); letter-spacing: -0.045em; }
:lang(ar) .hero__title { line-height: 1.22; letter-spacing: 0; }
.hero__line { display: block; }
.word { display: inline-block; padding-block: 0.06em 0.16em; margin-block: -0.06em -0.16em; }
.hero__line.is-accent .word {
  background: linear-gradient(100deg, var(--gold), var(--ember) 35%, var(--rose) 65%, var(--violet));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lede { max-width: 34rem; margin: 0; color: var(--muted); font-size: clamp(1.0625rem, 1.35vw, 1.25rem); }
.samt { font-family: "El Messiri", serif; font-size: 1.12em; font-weight: 600; color: var(--gold); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.hero__art { order: -1; position: relative; justify-self: center; width: min(84vw, 46svh, 700px); aspect-ratio: 1; perspective: 1100px; }
.hero__scroll {
  position: absolute; bottom: 26px; left: 50%; display: none; margin: 0; justify-items: center; gap: 12px;
  transform: translateX(-50%);
  font: 500 0.6875rem/1 var(--label); letter-spacing: var(--tracking); text-transform: uppercase; color: var(--faint);
}
.hero__scroll::after {
  content: ""; width: 1px; height: 44px; background: linear-gradient(var(--gold), transparent);
  transform-origin: top; animation: k-drip 2.4s var(--ease-out) infinite;
}

@media (min-width: 960px) {
  .hero { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); align-items: center; gap: 0; }
  .hero__title { font-size: clamp(2.75rem, 5.8vw, 5.25rem); }
  .hero__art { order: 0; width: min(100%, 78vh, 700px); }
}
@media (min-width: 960px) and (min-height: 680px) { .hero__scroll { display: grid; } }

/* ------------------------------------------------------------------ quasar */

.quasar { position: absolute; inset: 0; }
.quasar__body { position: absolute; inset: 0; will-change: transform; }
.quasar__body > * { position: absolute; }

.quasar__halo {
  inset: -24%; border-radius: 50%;
  background: radial-gradient(closest-side, rgb(255 214 150 / 0.34), rgb(255 140 66 / 0.16) 26%, rgb(255 126 138 / 0.08) 48%, rgb(201 160 255 / 0.05) 68%, transparent);
  animation: k-breathe 9s ease-in-out infinite;
}

.quasar__jets { inset: 0; transform: rotate(-12deg); }
.quasar__jet { position: absolute; left: 49%; bottom: 50%; width: 2%; height: 92%; transform-origin: 50% 100%; }
.quasar__jet.is-south { transform: rotate(180deg); }
.quasar__jet i {
  position: absolute; inset: 0; overflow: hidden; border-radius: 50% / 6%; transform-origin: 50% 100%;
  background: linear-gradient(to top, rgb(255 248 242 / 0.95), rgb(201 160 255 / 0.6) 14%, rgb(0 229 255 / 0.26) 52%, transparent 96%);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 35%, #000 65%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 35%, #000 65%, transparent);
  animation: k-jet 4s ease-in-out infinite alternate;
}
.quasar__jet.is-south i { animation-delay: -2s; }
.quasar__jet i::after {
  content: ""; position: absolute; inset: 0 0 -80px;
  background: repeating-linear-gradient(to top, transparent 0 26px, rgb(255 255 255 / 0.75) 26px 30px, transparent 30px 80px);
  animation: k-knots 1.3s linear infinite;
}

.quasar__disk { inset: 5%; }
.quasar__disk.is-front { clip-path: polygon(0 60.6%, 100% 39.4%, 100% 100%, 0 100%); }
.quasar__tilt { position: absolute; inset: 0; transform: rotate(-12deg) scaleY(0.22); }
.quasar__tilt::after, .quasar__swirl {
  -webkit-mask-image: radial-gradient(closest-side, transparent 31%, #000 35%, #000 48%, rgb(0 0 0 / 0.5) 66%, transparent 100%);
  mask-image: radial-gradient(closest-side, transparent 31%, #000 35%, #000 48%, rgb(0 0 0 / 0.5) 66%, transparent 100%);
}
.quasar__swirl {
  position: absolute; inset: 0; border-radius: 50%;
  background:
    repeating-conic-gradient(from 0deg, transparent 0deg 7deg, rgb(255 255 255 / 0.32) 8deg, transparent 9deg 17deg),
    conic-gradient(from 0deg, #ff8c42, #ffd08a 8%, #fff4e0 14%, #ffc766 22%, #ff7e8a 36%, #c9a0ff 50%, #ff7e8a 62%, #ff8c42 74%, #ffe2b0 86%, #ff8c42);
  animation: k-spin 18s linear infinite;
}
/* Doppler beaming: the approaching side stays brighter while the disk turns under it. */
.quasar__tilt::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: linear-gradient(90deg, rgb(255 250 235 / 0.6), transparent 55%); }

.quasar__lens {
  inset: 30%; border-radius: 50%;
  background: conic-gradient(from -12deg, #fff4e0, #ffc766 18%, rgb(255 140 66 / 0.6) 30%, #ffc766 46%, #fff4e0 52%, #ffc766 66%, rgb(255 126 138 / 0.55) 80%, #fff4e0);
  -webkit-mask-image: radial-gradient(closest-side, transparent 67%, #000 71%, #000 75%, rgb(0 0 0 / 0.3) 84%, transparent 100%);
  mask-image: radial-gradient(closest-side, transparent 67%, #000 71%, #000 75%, rgb(0 0 0 / 0.3) 84%, transparent 100%);
  animation: k-spin 30s linear infinite reverse;
}
.quasar__core {
  inset: 38.5%; border-radius: 50%; background: #000;
  box-shadow: 0 0 0 1px rgb(255 238 214 / 0.8), 0 0 14px 2px rgb(255 199 102 / 0.7), 0 0 48px 10px rgb(255 140 66 / 0.28);
}
.quasar__pulse {
  position: absolute; inset: 35%; z-index: 3; padding: 0; border: 0; border-radius: 50%;
  background: transparent; cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.quasar__pulse:focus-visible { outline: 2px solid var(--gold); outline-offset: 8px; }
.quasar__shock {
  position: absolute; inset: 38.5%; z-index: 2; border-radius: 50%; pointer-events: none;
  border: 1.5px solid rgb(255 214 150 / 0.9);
  box-shadow: 0 0 30px rgb(255 199 102 / 0.45), inset 0 0 30px rgb(255 199 102 / 0.3);
}

/* ----------------------------------------------------------------- compass */

.compass { inset: -7%; pointer-events: none; }
.compass > div { position: absolute; inset: 0; }
.compass svg { width: 100%; height: 100%; overflow: visible; }
.compass__bezel, .compass__marker { will-change: transform; }
.compass__legend-text { direction: ltr; font: 500 12px var(--mono); letter-spacing: 0.3em; fill: rgb(255 248 242 / 0.3); }
:lang(ar) .compass__legend-text { font: 600 14px var(--display); letter-spacing: 0; }
.compass__rim { fill: none; stroke: rgb(255 248 242 / 0.16); }
.compass__tick { fill: none; stroke: rgb(255 248 242 / 0.2); }
.compass__tick.is-mid { stroke: rgb(255 248 242 / 0.36); }
.compass__tick.is-major { stroke: rgb(255 248 242 / 0.62); stroke-width: 1.5; }
.compass__deg, .compass__cardinal { text-anchor: middle; dominant-baseline: central; }
.compass__deg { font: 500 11px var(--mono); fill: rgb(255 248 242 / 0.5); }
.compass__cardinal { font: 600 17px var(--display); fill: rgb(255 248 242 / 0.82); }
.compass__cardinal.is-north { fill: var(--gold); }
.compass__dash { fill: none; stroke: rgb(255 199 102 / 0.3); stroke-dasharray: 1 7; }
.compass__needle { stroke: rgb(255 199 102 / 0.55); stroke-dasharray: 2 5; }
.compass__lubber { fill: var(--gold); }
@media (max-width: 600px) { .compass__deg { display: none; } }

/* ------------------------------------------------------------- motion kit */

.art svg { width: 100%; height: 100%; overflow: visible; }
.spin { animation: k-spin var(--t, 30s) linear var(--d, 0s) infinite var(--dir, normal); }
.flip, .ping, .breathe { transform-box: fill-box; transform-origin: center; }
.flip { animation: k-flip var(--t) ease-in-out var(--d, 0s) infinite; }
.ping { fill: none; stroke: currentColor; stroke-width: 0.8; animation: k-ping var(--t) cubic-bezier(0.2, 0.6, 0.35, 1) var(--d, 0s) infinite; }
.twinkle { animation: k-twinkle var(--t, 3s) ease-in-out var(--d, 0s) infinite; }
.breathe { animation: k-breathe var(--t, 6s) ease-in-out var(--d, 0s) infinite; }
.draw { stroke-dasharray: 1; animation: k-draw var(--t) ease-in-out var(--d, 0s) infinite; }
.bit { stroke: var(--ink); stroke-width: 2; stroke-linecap: round; stroke-opacity: 1; stroke-dasharray: 0.04 1.2; animation: k-bit var(--t) linear var(--d, 0s) infinite; }
.fall { animation: k-fall var(--t) cubic-bezier(0.55, 0, 0.8, 0.4) var(--d, 0s) infinite; }

/* --------------------------------------------------------------- emblems */

.orb { position: relative; aspect-ratio: 1; color: var(--accent); }
.orb > *, .tilt > *, .spin > *, .half > * { position: absolute; inset: 0; }
.tilt { transform: rotate(var(--tilt)) scaleY(var(--squash)); }
.tilt > .half { inset: 50% 0 0; overflow: hidden; }
.half > .spin { inset: -100% 0 0; }

.halo {
  border-radius: 50%; transform: scale(1.3); opacity: 0.75;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 30%, transparent), color-mix(in srgb, var(--accent) 9%, transparent) 50%, transparent);
  transition: opacity 0.8s, transform 0.8s var(--ease-out);
}
.world.is-reached .halo, .world:hover .halo { opacity: 1; transform: scale(1.42); }

.ln { fill: none; stroke: currentColor; stroke-width: 0.7; stroke-opacity: 0.45; }
.ln.is-faint { stroke-opacity: 0.2; }
.ln.is-bright { stroke-opacity: 0.8; }
.ln.is-rim { stroke-width: 1; stroke-opacity: 0.9; }
.ln.is-dotted { stroke-dasharray: 0.5 3.5; stroke-linecap: round; stroke-opacity: 0.65; }
.ln.is-dashed { stroke-dasharray: 6 4; }
.ln.is-gold { stroke: var(--gold); }
.dot { fill: currentColor; }
.dot.is-gold { fill: var(--gold); }
.ping.is-gold { stroke: var(--gold); }
.glow { fill: currentColor; opacity: 0.14; }
.ring { fill: none; stroke-width: 2.4; }
.jet { stroke: var(--ink); stroke-width: 1.4; stroke-linecap: round; opacity: 0.8; }

.orb > .orb__sweep {
  inset: 5%; border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0 68%, color-mix(in srgb, var(--accent) 6%, transparent) 80%, color-mix(in srgb, var(--accent) 40%, transparent) 99.4%, var(--accent));
}
.spin > .orb__sat {
  inset: auto; left: 90%; top: 50%; width: 3%; height: 8.8%; margin: -4.4% 0 0 -1.5%;
  border-radius: 50%; background: var(--ink); box-shadow: 0 0 10px 2px var(--accent);
  animation: k-spin var(--t) linear infinite reverse, k-occult var(--t) linear infinite;
}
.orb > .orb__scan { inset: 8%; border-radius: 50%; overflow: hidden; }
.orb__scan i {
  position: absolute; inset: 0;
  background:
    linear-gradient(transparent 49.5%, color-mix(in srgb, var(--accent) 75%, transparent) 50%, transparent 50.5%),
    linear-gradient(transparent 28%, color-mix(in srgb, var(--accent) 8%, transparent) 50%, transparent 50.1%);
  animation: k-scan var(--t) ease-in-out infinite alternate;
}

/* ------------------------------------------------------------- trajectory */

.trajectory { position: absolute; inset: 0; z-index: 0; display: none; pointer-events: none; }
.js .trajectory.is-ready { display: block; }
.trajectory svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.trajectory path { fill: none; stroke-width: 1.2; stroke-linecap: round; stroke-dasharray: 1 9; opacity: 0.55; }
.probe i {
  position: absolute; top: 0; left: 0; width: 8px; height: 8px; margin: -4px 0 0 -4px;
  border-radius: 50%; background: var(--probe, var(--gold)); opacity: 0.5; will-change: transform;
}
.probe i:first-child {
  width: 12px; height: 12px; margin: -6px 0 0 -6px; opacity: 1; background: var(--ink);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--probe, var(--gold)) 40%, transparent), 0 0 24px 6px var(--probe, var(--gold));
}
.probe i:nth-child(2) { opacity: 0.7; }
.probe i:nth-child(n + 5) { opacity: 0.25; }

/* ---------------------------------------------------------------- registry */

.registry { position: relative; z-index: 1; padding: clamp(96px, 16vh, 180px) 0 clamp(96px, 14vh, 160px); overflow-x: clip; }
.registry__inner { max-width: 1240px; margin-inline: auto; padding-inline: var(--gutter); }
.registry__head { max-width: 44rem; }
.registry__head h2 { margin: 14px 0 18px; font: 600 clamp(2.2rem, 5vw, 4rem)/1.02 var(--display); letter-spacing: -0.035em; }
:lang(ar) .registry__head h2 { line-height: 1.3; letter-spacing: 0; }
.registry__head p:last-child { max-width: 34rem; margin: 0; color: var(--muted); font-size: 1.125rem; }

.worlds { display: grid; grid-template-columns: minmax(0, 1fr); gap: clamp(96px, 18vh, 200px); margin: clamp(56px, 10vh, 120px) 0 0; padding: 0; list-style: none; }
.world { position: relative; display: grid; grid-template-columns: minmax(0, 1fr); align-items: center; gap: clamp(20px, 4vw, 40px); }
.world__ghost {
  position: absolute; z-index: -1; top: 50%; inset-inline-start: -2%; margin: 0;
  translate: 0 -50%; white-space: nowrap; pointer-events: none; user-select: none;
  font: 700 clamp(4rem, 13vw, 12rem)/0.9 var(--display); letter-spacing: -0.04em;
  color: transparent; -webkit-text-stroke: 1px color-mix(in srgb, var(--accent) 22%, transparent);
}
:lang(ar) .world__ghost { letter-spacing: 0; line-height: 1.3; }
.world__orb { width: min(100%, 440px); justify-self: center; will-change: transform; }
.world__index {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin: 0;
  font: 500 0.75rem/1.2 var(--label); letter-spacing: var(--tracking); text-transform: uppercase; color: var(--faint);
}
.world__code { color: var(--accent); font-family: var(--mono); }
.world__state {
  display: inline-flex; align-items: center; gap: 8px; padding: 5px 11px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent); border-radius: 999px; color: var(--accent);
}
.world__state::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; animation: k-beacon 2.4s ease-out infinite; }
[data-state="forming"] .world__state::before { animation: k-twinkle 1.1s steps(2, jump-none) infinite; }
.world__name { margin: 18px 0 16px; font: 600 clamp(2.5rem, 6vw, 4.75rem)/0.98 var(--display); letter-spacing: -0.035em; }
:lang(ar) .world__name { line-height: 1.3; }
[data-scramble] { display: inline-block; }
.world__summary { max-width: 34rem; margin: 0; color: var(--muted); font-size: 1.125rem; }
.world__facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(9.5rem, 100%), 1fr)); max-width: 36rem;
  margin: 28px 0 32px; border-block-start: 1px solid var(--line);
}
.world__facts div { padding-block: 14px; padding-inline-end: 16px; border-block-end: 1px solid var(--line); }
.world__facts dt { font: 500 0.6875rem/1.4 var(--label); letter-spacing: var(--tracking); text-transform: uppercase; color: var(--faint); }
.world__facts dd { margin: 4px 0 0; font: 500 0.9375rem/1.4 var(--display); }
.world__cta {
  display: inline-flex; align-items: center; gap: 12px; min-height: 52px; padding: 0 24px;
  border-radius: 999px; background: var(--accent); color: var(--void);
  font: 600 1rem/1 var(--display); text-decoration: none;
  box-shadow: 0 12px 40px -14px var(--accent);
  transition: box-shadow 0.4s var(--ease-out);
}
/* The whole world is the target; the focus ring stays on the named link. */
.world__cta::after { content: ""; position: absolute; inset: 0; z-index: 2; }
.world__cta:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
.world:hover .world__cta { box-shadow: 0 16px 56px -10px var(--accent); }
.world__arrow { display: inline-block; transition: transform 0.4s var(--ease-out); }
.world:hover .world__arrow, .world__cta:focus-visible .world__arrow { transform: translateX(5px); }
[dir="rtl"] .world__arrow { transform: scaleX(-1); }
[dir="rtl"] .world:hover .world__arrow, [dir="rtl"] .world__cta:focus-visible .world__arrow { transform: scaleX(-1) translateX(5px); }

@media (min-width: 860px) {
  .world { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); }
  .world:nth-child(even) .world__orb { order: 2; }
}
@media (max-width: 859px) {
  .world__orb { width: min(82vw, 380px); }
}

/* ------------------------------------------------------------------ finale */

.finale {
  position: relative; z-index: 1; display: grid; justify-items: center; align-content: center; gap: 28px;
  min-height: 86vh; padding: 120px var(--gutter) max(56px, env(safe-area-inset-bottom));
  text-align: center; overflow: clip;
}
.finale__horizon {
  position: absolute; z-index: -1; top: 64%; left: 50%; width: max(180vw, 1600px); aspect-ratio: 1;
  border-radius: 50%; transform: translateX(-50%);
  background: radial-gradient(closest-side, #0a0610 96%, transparent 100%);
  box-shadow: 0 -1px 0 rgb(255 199 102 / 0.6), inset 0 40px 80px -40px rgb(255 199 102 / 0.35);
}
.finale__horizon::after {
  content: ""; position: absolute; inset: -6% 10% auto; height: 20%; border-radius: 50%;
  background: radial-gradient(50% 50% at 50% 100%, rgb(255 140 66 / 0.4), rgb(255 126 138 / 0.12) 50%, transparent 75%);
  animation: k-dawn 10s ease-in-out infinite alternate;
}
.finale__title {
  max-width: 14ch; margin: 0;
  font: 600 clamp(2.4rem, 6.5vw, 5.5rem)/1 var(--display); letter-spacing: -0.04em;
  background: linear-gradient(100deg, var(--ink) 15%, var(--gold) 45%, var(--rose) 72%, var(--violet));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  padding-block: 0.06em 0.12em;
}
:lang(ar) .finale__title { line-height: 1.35; letter-spacing: 0; }
.finale__back { display: inline-flex; align-items: center; gap: 10px; color: var(--muted); font: 500 1rem/1 var(--display); text-decoration: none; padding: 12px 4px; }
.finale__back:hover { color: var(--ink); }
.finale__back:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; border-radius: 4px; }
.finale__meta { display: grid; gap: 6px; margin-top: clamp(48px, 12vh, 120px); color: var(--faint); font: 500 0.8125rem/1.5 var(--display); }
.finale__meta p { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 14px; margin: 0; }
.finale__meta a { color: var(--muted); text-underline-offset: 3px; }
.finale__meta a:hover { color: var(--ink); }

/* ----------------------------------------------------------- choreography */

@media (prefers-reduced-motion: no-preference) {
  .word { animation: k-rise 1.1s var(--ease-out) both; animation-delay: calc(0.12s + var(--i) * 0.08s); }
  .hero__eyebrow { animation: k-fade 1s var(--ease-out) both; }
  .hero__lede { animation: k-lift 1s var(--ease-out) 0.5s both; }
  .hero__actions { animation: k-lift 1s var(--ease-out) 0.62s both; }
  .hero__art { animation: k-emerge 1.8s var(--ease-out) both; }

  .js [data-enter] { opacity: 0; transform: translateY(32px); transition: opacity 1s var(--ease-out), transform 1s var(--ease-out); }
  .js [data-enter].is-in { opacity: 1; transform: none; }

  @supports (animation-timeline: view()) {
    .world__ghost { animation: k-ghost linear both; animation-timeline: view(); }
  }
}

.js [data-animate]:not([data-in-view]) * { animation-play-state: paused !important; }

/* The jump between spaces: the stage falls away while the sky streaks in the space's colour. */
.warp-flash {
  position: fixed; inset: 0; z-index: 20; pointer-events: none; opacity: 0;
  background: radial-gradient(circle at 50% 50%, var(--warp, var(--ink)), transparent 62%);
}
.is-warping .warp-flash { animation: k-flash 0.65s ease-in forwards; }
.is-warping .stage, .is-warping .finale, .is-warping .masthead {
  opacity: 0; transform: scale(1.08);
  transition: opacity 0.45s ease-in, transform 0.6s ease-in;
}

@media (max-width: 720px) {
  .hud__wide { display: none; }
  .hud__corner { width: 14px; height: 14px; }
}
/* On a phone the readouts would sit over the copy; the corners keep the frame. */
@media (max-width: 520px) {
  .js .hud__readout { display: none; }
  .brand span { display: none; }
  .langs a { padding: 8px 9px; }
}
@media (max-width: 374px) {
  .langs__name { display: none; }
  .langs__code { display: inline; }
  .langs a { padding: 8px 11px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* --------------------------------------------------------------- keyframes */

@keyframes k-spin { to { transform: rotate(360deg); } }
@keyframes k-flip { 0%, 100% { transform: scaleX(1); } 50% { transform: scaleX(-1); } }
@keyframes k-ping { from { transform: scale(0.6); opacity: 0.9; } to { transform: scale(3.4); opacity: 0; } }
@keyframes k-twinkle { 0%, 100% { opacity: 1; } 50% { opacity: 0.2; } }
@keyframes k-breathe { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.08); } }
@keyframes k-draw { 0% { stroke-dashoffset: 1; } 35%, 70% { stroke-dashoffset: 0; } 100% { stroke-dashoffset: -1; } }
@keyframes k-bit { from { stroke-dashoffset: 0.04; } to { stroke-dashoffset: -1.04; } }
@keyframes k-fall { 0% { transform: translate(var(--x), var(--y)); opacity: 0; } 20% { opacity: 1; } 100% { transform: translate(0, 0) scale(0.3); opacity: 0; } }
@keyframes k-occult { 0%, 61% { opacity: 1; } 64%, 86% { opacity: 0; } 89%, 100% { opacity: 1; } }
@keyframes k-scan { from { transform: translateY(-44%); } to { transform: translateY(44%); } }
@keyframes k-jet { from { transform: scaleY(0.84); opacity: 0.7; } to { transform: scaleY(1.04); opacity: 1; } }
@keyframes k-knots { to { transform: translateY(-80px); } }
@keyframes k-nebula { from { transform: translate3d(-2%, -1%, 0); } to { transform: translate3d(2%, 1.5%, 0) scale(1.06); } }
@keyframes k-beacon { from { box-shadow: 0 0 0 0 color-mix(in srgb, currentColor 60%, transparent); } to { box-shadow: 0 0 0 8px transparent; } }
@keyframes k-bob { 0%, 100% { transform: translateY(-2px); } 50% { transform: translateY(3px); } }
@keyframes k-drip { 0% { transform: scaleY(0); opacity: 1; } 70% { transform: scaleY(1); opacity: 1; } 100% { transform: scaleY(1); opacity: 0; } }
@keyframes k-dawn { from { opacity: 0.55; transform: scaleX(0.92); } to { opacity: 1; transform: scaleX(1.05); } }
@keyframes k-rise { from { opacity: 0; transform: translateY(0.55em); } }
@keyframes k-lift { from { opacity: 0; transform: translateY(24px); } }
@keyframes k-fade { from { opacity: 0; } }
@keyframes k-emerge { from { opacity: 0; transform: scale(0.86); } }
@keyframes k-ghost { from { transform: translateX(8%); } to { transform: translateX(-8%); } }
@keyframes k-flash { 0% { opacity: 0; } 70% { opacity: 0.85; } 100% { opacity: 1; } }