/* ==========================================================================
   01 · CORE — cinematic dark 3D. Precision instrument seen through telemetry.
   Palette is built on the logo's #14695b; one warm signal colour (amber) for "live".
   ========================================================================== */

:root {
  /* surfaces */
  --bg: #050908;
  --bg-2: #0A1210;
  --panel: #0D1715;
  --panel-2: #12201D;
  --panel-a: rgb(13 23 21 / .93);
  /* brand + teal ramp (hue ~170°, green-leaning) */
  --brand: #14695b;
  --brand-rgb: 20 105 91;
  --brand-2: #1B7F6E;
  --teal: #5FD3B6;
  --teal-hot: #8EE6CF;
  --teal-deep: #0B3B33;
  /* lines */
  --line: rgb(20 105 91 / .42);
  --line-soft: rgb(20 105 91 / .26);
  --line-hi: rgb(95 211 182 / .38);
  /* text */
  --text: #E8F1EE;
  --muted: #8FA7A0;
  --dim: #7C958E;
  /* signal */
  --amber: #E7B24A;
  /* type */
  --f-display: 'Archivo', 'Noto Sans Bengali', system-ui, sans-serif;
  --f-mono: 'JetBrains Mono', 'Noto Sans Bengali', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  /* layout */
  --gutter: clamp(16px, 4vw, 56px);
  --gap: 24px;
  --maxw: 1440px;
  --top: 64px;
  --ease: cubic-bezier(.2, .7, .15, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--bg); color: var(--text); -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
html:not(.lenis) { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html:not(.lenis) { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--f-display); font-size: 1.0625rem; line-height: 1.62; font-stretch: 100%;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button, input, textarea { font: inherit; color: inherit; }
p { margin: 0; }
p, li, dd, label, .node-body { word-spacing: .08em; }
h1, h2, h3 { margin: 0; font-weight: 600; }
ul, ol { margin: 0; padding: 0; list-style: none; }
dl, dd { margin: 0; }
::selection { background: var(--teal); color: #03100C; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0; }
.dim { color: var(--muted); }
.ic { width: 16px; height: 16px; flex: none; }

/* focus: always visible, high contrast, never removed */
:focus-visible { outline: 2px solid var(--teal-hot); outline-offset: 3px; }
main:focus, section:focus { outline: none; }

.skip {
  position: fixed; left: 16px; top: 12px; z-index: 100; padding: 10px 16px;
  background: var(--teal-hot); color: #03100C; font: 600 .875rem/1 var(--f-mono); text-decoration: none;
  transform: translateY(-160%); transition: transform .2s;
}
.skip:focus { transform: none; }

/* ------------------------------------------------------------------ layout */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); }
main { position: relative; z-index: 2; }
.sec { position: relative; padding-block: clamp(120px, 20vh, 220px) clamp(40px, 8vh, 96px); }

/* ------------------------------------------------------------------ stage (WebGL) */
.stage { position: fixed; inset: 0; z-index: 0; pointer-events: none; height: 100lvh; }
#core-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 1.6s var(--ease); }
.stage.is-live #core-canvas { opacity: 1; }
.core-poster {
  position: absolute; left: 68%; top: 50%; width: min(92vh, 62vw); aspect-ratio: 1; transform: translate(-50%, -50%);
  transition: opacity 1.4s var(--ease);
}
.core-poster svg { width: 100%; height: 100%; }
.stage.is-live .core-poster { opacity: 0; }
.stage-vignette {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 66% 48%, transparent 45%, rgb(5 9 8 / .55) 80%, rgb(5 9 8 / .85) 100%),
    linear-gradient(90deg, rgb(5 9 8 / .72) 0%, rgb(5 9 8 / .5) 38%, rgb(5 9 8 / .12) 54%, transparent 64%);
}
.sat-labels { position: absolute; inset: 0; opacity: 0; transition: opacity .6s; }
.stage::after { content: ""; position: absolute; inset: 0; background: rgb(5 9 8 / .6); opacity: 0; transition: opacity .9s var(--ease); }
@media (max-width: 1023px) { .stage.dim::after { opacity: 1; } }
.sat-labels.on { opacity: 1; }
.sat-label {
  position: absolute; left: 0; top: 0; display: flex; align-items: center; gap: 8px; white-space: nowrap;
  font: 500 11px/1 var(--f-mono); letter-spacing: .08em; color: var(--muted);
  will-change: transform; transition: color .4s, opacity .4s;
}
.sat-label::before { content: ""; width: 18px; height: 1px; background: currentColor; opacity: .6; }
.sat-label b { font-weight: 600; color: var(--teal); }
.sat-label span { max-width: 0; overflow: hidden; opacity: 0; padding: 4px 0; background: rgb(5 9 8 / .72); transition: max-width .6s var(--ease), opacity .4s, padding .4s; }
.sat-label.is-active { color: var(--text); }
.sat-label.is-active b { color: var(--teal-hot); }
.sat-label.is-active span { max-width: 48ch; opacity: 1; padding: 4px 8px; }

/* ------------------------------------------------------------------ top bar */
.topbar { position: fixed; inset: 0 0 auto; z-index: 20; height: var(--top); transition: background-color .4s, border-color .4s; border-bottom: 1px solid transparent; }
.topbar.is-scrolled { background: rgb(5 9 8 / .88); border-color: var(--line-soft); }
.topbar-in { height: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; margin-right: auto; min-height: 44px; }
.logo-mark {
  width: 30px; height: 30px; background: var(--teal-hot);
  -webkit-mask: url(../shared/logo-mark.svg) center / contain no-repeat; mask: url(../shared/logo-mark.svg) center / contain no-repeat;
}
.brand-txt { display: flex; flex-direction: column; line-height: 1.1; }
.brand-txt b { font: 700 .8125rem/1.1 var(--f-display); font-stretch: 125%; letter-spacing: .12em; text-transform: uppercase; }
.brand-txt span { font: 400 .6875rem/1.3 var(--f-mono); color: var(--muted); letter-spacing: .06em; }
.topnav ul { display: flex; gap: 4px; }
.topnav a {
  display: flex; align-items: center; gap: 6px; padding: 10px 12px; min-height: 44px; text-decoration: none;
  font: 600 .75rem/1 var(--f-display); font-stretch: 112%; letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
  transition: color .2s;
}
.topnav a .n { font: 500 .6875rem/1 var(--f-mono); color: var(--brand-2); letter-spacing: 0; }
.topnav a:hover, .topnav a[aria-current="true"] { color: var(--text); }
.topnav a[aria-current="true"] .n { color: var(--teal); }
.menu-btn { display: none; }

/* ------------------------------------------------------------------ buttons */
.btn {
  --h: 50px;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: var(--h); padding: 0 20px;
  font: 650 .78rem/1 var(--f-display); font-stretch: 115%; letter-spacing: .12em; text-transform: uppercase; text-decoration: none;
  border: 1px solid transparent; border-radius: 2px; cursor: pointer; background: none;
  transition: background-color .25s, border-color .25s, color .25s, transform .25s var(--ease);
}
.btn .ic { transition: transform .3s var(--ease); }
.btn:hover .ic { transform: translate(2px, -2px); }
.btn--primary { background: var(--brand); color: #F2FBF8; border-color: rgb(95 211 182 / .35); box-shadow: inset 0 1px 0 rgb(142 230 207 / .22); }
.btn--primary:hover { background: var(--brand-2); border-color: var(--teal); }
.btn--ghost { color: var(--text); border-color: var(--line-hi); background: rgb(5 9 8 / .35); }
.btn--ghost:hover { border-color: var(--teal); color: var(--teal-hot); }
.btn--sm { --h: 40px; padding: 0 14px; font-size: .7rem; }
.btn-sub { font: 500 .6875rem/1 var(--f-mono); letter-spacing: .02em; text-transform: none; color: var(--muted); margin-left: -2px; }
.btn[disabled] { opacity: .6; cursor: progress; }

/* ------------------------------------------------------------------ live dot (the one warm signal) */
.live-dot { position: relative; width: 8px; height: 8px; border-radius: 50%; background: var(--amber); flex: none; box-shadow: 0 0 0 3px rgb(231 178 74 / .16); }
.has-motion .live-dot::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid var(--amber); opacity: 0; animation: ping 2.4s var(--ease) infinite; }
@keyframes ping { 0% { transform: scale(.6); opacity: .9; } 100% { transform: scale(2.2); opacity: 0; } }

/* ------------------------------------------------------------------ hero */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; }
.hero-in { display: flex; flex-direction: column; justify-content: space-between; padding-top: calc(var(--top) + clamp(40px, 9vh, 110px)); padding-bottom: 28px; }
.hero-copy { max-width: 760px; }
.eyebrow { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 12px; font: 500 .75rem/1.3 var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.eyebrow > span:nth-child(2) { color: var(--text); }
.eyebrow-sep { width: 28px; height: 1px; background: var(--line-hi); }
.hero-name {
  margin: clamp(20px, 3.4vh, 36px) 0 clamp(18px, 3vh, 30px);
  font-family: var(--f-display); font-weight: 800; font-stretch: 125%;
  font-size: clamp(4.5rem, 10.6vw, 10.5rem); line-height: .84; letter-spacing: -.015em; text-transform: uppercase;
}
.hn-line { display: block; }
.hn-line--2 { color: transparent; -webkit-text-stroke: 1.5px var(--teal); padding-left: .42em; }
.hero-role { font: 600 clamp(1rem, 1.3vw, 1.25rem)/1.35 var(--f-display); font-stretch: 112%; letter-spacing: .06em; text-transform: uppercase; }
.engineer { margin-top: 14px; display: flex; align-items: baseline; flex-wrap: wrap; gap: 0 .5ch; font: 400 clamp(1.25rem, 1.9vw, 1.75rem)/1.2 var(--f-display); font-stretch: 105%; color: var(--muted); }
.eng-words { --lh: 1.2em; display: inline-block; height: var(--lh); overflow: hidden; vertical-align: bottom; color: var(--teal-hot); }
.eng-track { display: flex; flex-direction: column; }
.eng-track > span { display: block; height: var(--lh); line-height: var(--lh); white-space: nowrap; }
.has-motion .eng-track { animation: words 9s var(--ease) infinite; }
@keyframes words {
  0%, 28% { transform: translateY(0); }
  33.3%, 61% { transform: translateY(calc(var(--lh) * -1)); }
  66.6%, 94% { transform: translateY(calc(var(--lh) * -2)); }
  100% { transform: translateY(calc(var(--lh) * -3)); }
}
/* reduced motion / no-JS: show all three, separated */
html:not(.has-motion) .eng-words { height: auto; overflow: visible; }
html:not(.has-motion) .eng-track { flex-direction: row; flex-wrap: wrap; gap: 0 .5ch; }
html:not(.has-motion) .eng-track > span { height: auto; }
html:not(.has-motion) .eng-dup { display: none !important; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: clamp(28px, 5vh, 48px); }

.hero-meta { display: grid; grid-template-columns: 1.4fr 1fr 1fr auto; gap: 0; margin-top: 48px; border-top: 1px solid var(--line); }
.hero-meta > div { padding: 14px 20px 0 0; display: flex; gap: 12px; align-items: baseline; font: 400 .75rem/1.4 var(--f-mono); letter-spacing: .04em; }
.hero-meta > div + div { padding-left: 20px; border-left: 1px solid var(--line-soft); }
.hero-meta dt { color: var(--brand-2); text-transform: uppercase; letter-spacing: .14em; font-size: .6875rem; color: var(--teal); opacity: .8; }
.hero-meta dd { color: var(--text); }
.hm-scroll dd { display: flex; align-items: center; gap: 8px; }
.has-motion .hm-scroll .ic { animation: nudge 2.2s var(--ease) infinite; }
@keyframes nudge { 0%, 100% { transform: translateY(-2px); } 50% { transform: translateY(3px); } }

/* hero intro: CSS only, so text never waits for JS/WebGL */
.has-motion [data-intro] { animation: rise 1.1s var(--ease) both; animation-delay: calc(var(--i, 0) * 90ms + 120ms); }
.has-motion [data-intro="1"] { --i: 0; } .has-motion [data-intro="2"] { --i: 1; } .has-motion [data-intro="3"] { --i: 3; }
.has-motion [data-intro="4"] { --i: 4; } .has-motion [data-intro="5"] { --i: 5; } .has-motion [data-intro="6"] { --i: 7; }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

/* ------------------------------------------------------------------ section heads */
.sec-head { grid-column: 1 / span 7; margin-bottom: clamp(36px, 6vh, 64px); }
.sec-no {
  display: flex; align-items: center; gap: 12px; margin-bottom: 22px;
  font: 500 .75rem/1 var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--muted);
}
.sec-no span { color: var(--teal); }
.sec-no span::after { content: " /"; color: var(--dim); }
.sec-no::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--line), transparent); max-width: 320px; }
.sec-title { font: 650 clamp(2.1rem, 3.7vw, 3.5rem)/1.02 var(--f-display); font-stretch: 118%; letter-spacing: -.012em; text-wrap: balance; }
.sec-meta { margin-top: 18px; max-width: 56ch; color: var(--muted); font-size: 1rem; }
.mini-h { font: 500 .6875rem/1 var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--teal); margin-bottom: 14px; }

/* ------------------------------------------------------------------ panels */
.panel { position: relative; background: var(--panel-a); border: 1px solid var(--line); }
.ticks::after {
  content: ""; position: absolute; inset: -1px; pointer-events: none; --c: var(--teal); --s: 10px;
  background:
    linear-gradient(var(--c), var(--c)) top left / var(--s) 1px, linear-gradient(var(--c), var(--c)) top left / 1px var(--s),
    linear-gradient(var(--c), var(--c)) top right / var(--s) 1px, linear-gradient(var(--c), var(--c)) top right / 1px var(--s),
    linear-gradient(var(--c), var(--c)) bottom left / var(--s) 1px, linear-gradient(var(--c), var(--c)) bottom left / 1px var(--s),
    linear-gradient(var(--c), var(--c)) bottom right / var(--s) 1px, linear-gradient(var(--c), var(--c)) bottom right / 1px var(--s);
  background-repeat: no-repeat; opacity: .75;
}

/* reveal on scroll (motion only; content is visible without JS) */
.has-motion [data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0ms); }
.has-motion [data-reveal].in { opacity: 1; transform: none; }

/* ------------------------------------------------------------------ 01 about */
.about .sec-head { margin-bottom: 40px; }
.operator { grid-column: 1 / span 3; grid-row: 2; align-self: start; }
.about-body { grid-column: 4 / span 4; grid-row: 2; }
.lead { font: 400 clamp(1.15rem, 1.4vw, 1.3rem)/1.55 var(--f-display); color: var(--text); margin-bottom: 36px; }
.about-cols { display: grid; gap: 28px; }
.about-cols p { color: var(--muted); }
.about-cols > div { padding-top: 18px; border-top: 1px solid var(--line-soft); }
.op-photo { position: relative; margin: 0; aspect-ratio: 4 / 5; overflow: hidden; background: var(--panel); border: 1px solid var(--line); }
.op-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 30%; filter: grayscale(1) contrast(1.12) brightness(.82); }
.op-photo::before { content: ""; position: absolute; inset: 0; z-index: 1; background: var(--brand); mix-blend-mode: color; opacity: .9; }
.op-photo::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: repeating-linear-gradient(0deg, rgb(5 9 8 / .22) 0 1px, transparent 1px 3px), linear-gradient(180deg, transparent 55%, rgb(5 9 8 / .85));
}
.op-photo figcaption { position: absolute; z-index: 2; inset: auto 12px 10px; display: flex; justify-content: space-between; font: 500 .6875rem/1 var(--f-mono); letter-spacing: .08em; color: var(--teal-hot); }
.spec { margin-top: 18px; display: grid; gap: 0; font-size: .8125rem; }
.spec > div { display: grid; grid-template-columns: 84px 1fr; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line-soft); }
.spec dt { font: 500 .6875rem/1.6 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--teal); opacity: .85; }
.spec dd { font-family: var(--f-mono); font-size: .78rem; line-height: 1.55; color: var(--text); }
.spec-wide { grid-template-columns: 1fr !important; gap: 8px !important; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips li, .tags li {
  font: 500 .6875rem/1 var(--f-mono); letter-spacing: .02em; padding: 6px 8px; border: 1px solid var(--line); color: #BCD0CA; background: rgb(5 9 8 / .4);
}

/* ------------------------------------------------------------------ 02 stack */
.stack-panel { grid-column: 1 / span 8; }
.stack-groups { display: grid; grid-template-columns: repeat(4, 1fr); }
.sg { padding: 24px 24px 28px; }
.sg + .sg { border-left: 1px solid var(--line-soft); }
.sg-h { display: flex; align-items: baseline; gap: 8px; padding-bottom: 14px; margin-bottom: 8px; border-bottom: 1px solid var(--line); font: 500 .6875rem/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--teal); }
.sg-h b { font-weight: 600; color: var(--text); }
.sg-n { margin-left: auto; color: var(--muted); }
.sg-item { display: grid; grid-template-columns: 38px 1fr; padding: 14px 0 10px; border-bottom: 1px dashed var(--line-soft); }
.sg-item:last-child { border-bottom: 0; }
.sg-id { font: 500 .6875rem/1.9 var(--f-mono); color: var(--dim); }
.sg-name { font: 600 1.18rem/1.2 var(--f-display); font-stretch: 112%; }
.sg-detail { grid-column: 2; margin-top: 4px; font: 400 .75rem/1.4 var(--f-mono); color: var(--muted); }

/* ------------------------------------------------------------------ 03 projects */
.projects .sec-head { margin-bottom: 32px; }
.node-index { grid-column: 1 / span 7; padding: 10px 0; }
.node-index ol { columns: 2; column-gap: 0; }
.node-index li { break-inside: avoid; }
.node-index a {
  display: grid; grid-template-columns: 36px 1fr auto; gap: 10px; align-items: baseline; padding: 11px 20px; min-height: 44px; text-decoration: none;
  font-size: .9rem; line-height: 1.35; transition: background-color .2s, color .2s;
}
.node-index a:hover { background: rgb(20 105 91 / .18); }
.node-index .ni-id { font: 500 .7rem/1.35 var(--f-mono); color: var(--teal); }
.node-index .ni-t { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.node-index .ni-y { font: 400 .7rem/1.35 var(--f-mono); color: var(--muted); }

.nodes { margin-top: clamp(24px, 10vh, 120px); }
.node { min-height: 100vh; display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); align-items: center; padding-block: 6vh; scroll-margin-top: 0; }
.node-card { grid-column: 1 / span 7; display: grid; grid-template-columns: minmax(0, 1fr) 260px; transition: border-color .5s; }
.node.is-active .node-card { border-color: rgb(95 211 182 / .55); }
.node-meta {
  grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: stretch;
  border-bottom: 1px solid var(--line); font: 500 .6875rem/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted);
}
.node-meta > span { display: flex; align-items: center; gap: 6px; padding: 12px 16px; border-right: 1px solid var(--line-soft); }
.nm-id b { color: var(--teal-hot); font-weight: 600; }
.nm-status { margin-left: auto; border-right: 0 !important; border-left: 1px solid var(--line-soft); color: var(--text); }
.nm-status i { width: 6px; height: 6px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 3px rgb(95 211 182 / .15); }
.node-title { grid-column: 1 / -1; padding: 26px 28px 0; font: 650 clamp(1.6rem, 2.4vw, 2.3rem)/1.08 var(--f-display); font-stretch: 116%; letter-spacing: -.01em; text-wrap: balance; }
.node-host { grid-column: 1 / -1; padding: 10px 28px 0; font: 400 .78rem/1.4 var(--f-mono); color: var(--teal); overflow-wrap: anywhere; }
.node-host .dim { margin-right: 6px; text-transform: uppercase; letter-spacing: .12em; font-size: .6875rem; }
.node-body { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1fr) 232px; gap: 28px; padding: 22px 28px 26px; }
.node-summary { color: #C9D8D3; font-size: 1rem; line-height: 1.62; }
.node-features { margin-top: 16px; counter-reset: f; display: grid; gap: 6px; }
.node-features li { counter-increment: f; display: grid; grid-template-columns: 30px 1fr; font-size: .9rem; line-height: 1.5; color: var(--text); }
.node-features li::before { content: counter(f, decimal-leading-zero); font: 500 .6875rem/2.1 var(--f-mono); color: var(--teal); }
.node-note { margin-top: 14px; font: 400 .78rem/1.5 var(--f-mono); color: var(--muted); }
.note-k { color: var(--amber); text-transform: uppercase; letter-spacing: .12em; font-size: .6875rem; margin-right: 6px; }
.node-preview { position: relative; margin: 0; align-self: start; aspect-ratio: 4 / 3; overflow: hidden; border: 1px solid var(--line); background: var(--bg-2); }
.node-preview img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: top; opacity: 0; transition: opacity .8s; }
.node-preview img.is-loaded { opacity: 1; }
.poster {
  position: absolute; inset: 0; display: grid; grid-template-rows: auto 1fr auto; padding: 12px 14px;
  background:
    linear-gradient(rgb(20 105 91 / .18) 1px, transparent 1px) 0 0 / 100% 16px,
    linear-gradient(90deg, rgb(20 105 91 / .18) 1px, transparent 1px) 0 0 / 16px 100%,
    radial-gradient(90% 80% at 70% 30%, rgb(20 105 91 / .45), transparent 70%), var(--bg-2);
}
.poster-k { font: 500 .625rem/1 var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.poster-idx { align-self: center; justify-self: center; font: 800 5.2rem/1 var(--f-display); font-stretch: 125%; color: transparent; -webkit-text-stroke: 1px var(--teal); opacity: .9; }
.poster-host { font: 500 .6875rem/1.3 var(--f-mono); color: var(--teal-hot); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.node-foot { grid-column: 1 / -1; display: flex; align-items: center; gap: 18px; padding: 16px 28px 22px; border-top: 1px solid var(--line-soft); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; }
.btn--launch { flex: none; }

/* ------------------------------------------------------------------ 04 archives */
.ledger-panel { grid-column: 1 / span 8; padding: 8px 0 12px; }
.ledger-sum { display: flex; flex-wrap: wrap; gap: 6px 22px; padding: 16px 24px 18px; border-bottom: 1px solid var(--line); font: 500 .75rem/1.3 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.ledger-sum b { color: var(--teal-hot); font-weight: 600; margin-right: 4px; }
.ledger { display: grid; grid-template-columns: 1fr 1fr; column-gap: 0; }
.lr { position: relative; display: grid; grid-template-columns: 34px 1fr auto; gap: 4px 12px; align-items: baseline; padding: 16px 24px 18px; border-bottom: 1px solid var(--line-soft); }
.lr:nth-child(odd) { border-right: 1px solid var(--line-soft); }
.lr-idx { font: 500 .6875rem/1.6 var(--f-mono); color: var(--dim); }
.lr-main { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; min-width: 0; }
.lr-title { font: 600 1rem/1.3 var(--f-display); font-stretch: 108%; }
.lr-code { font: 500 .625rem/1 var(--f-mono); letter-spacing: .08em; padding: 4px 6px; border: 1px solid var(--line); color: var(--teal); }
.lr-detail { flex-basis: 100%; font: 400 .75rem/1.4 var(--f-mono); color: var(--muted); }
.lr-badge { font: 600 .75rem/1.6 var(--f-mono); letter-spacing: .06em; color: var(--teal-hot); text-transform: uppercase; white-space: nowrap; }
.lr[data-state="completed"] .lr-badge { color: var(--text); }
.lr-meter { position: absolute; left: 24px; right: 24px; bottom: 7px; display: flex; flex-direction: column; gap: 2px; }
.lr-meter i { height: 2px; background: var(--teal); opacity: .85; transform-origin: left; }
.lr-meter i + i { display: none; }
.lr[data-state="twice"] .lr-meter i + i { display: block; background: var(--teal-hot); }
.lr[data-state="completed"] .lr-meter i { background: repeating-linear-gradient(90deg, var(--teal) 0 6px, transparent 6px 10px); opacity: .7; }
.has-motion .ledger-panel:not(.in) .lr-meter i { transform: scaleX(0); }
.lr-meter i { transition: transform 1.2s var(--ease); transition-delay: calc(var(--k, 0) * 45ms + 200ms); }

/* ------------------------------------------------------------------ 05 logs */
.term { grid-column: 1 / span 7; font-family: var(--f-mono); }
.term-bar { display: flex; align-items: center; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--line); font: 500 .6875rem/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.term-k { color: var(--amber); }
.term-path { text-transform: none; letter-spacing: .02em; color: var(--text); }
.term-clock { margin-left: auto; }
.log-static, .log-stream { padding: 18px 20px 22px; font-size: .84rem; line-height: 1.6; }
.log-static li, .log-line { display: grid; grid-template-columns: 172px 1fr; gap: 16px; padding: 7px 0; border-bottom: 1px dashed var(--line-soft); }
.log-static li:last-child, .log-line:last-child { border-bottom: 0; }
.log-static time, .log-line time { color: var(--teal); white-space: nowrap; }
.lg-d { color: var(--muted); }
.lg-m { color: var(--text); }
.has-motion .log-static { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); padding: 0; }
html:not(.has-motion) .log-stream { display: none; }
.log-stream { min-height: calc(6 * 2.95em); display: flex; flex-direction: column; justify-content: flex-end; }
.log-line { animation: logIn .5s var(--ease) both; }
.log-line.is-old { opacity: .55; }
.log-line .caret { display: inline-block; width: .6em; height: 1.1em; margin-left: 2px; vertical-align: -.18em; background: var(--teal-hot); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@keyframes logIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ------------------------------------------------------------------ 06 services */
.svc-grid { grid-column: 1 / span 7; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; align-self: start; }
.svc {
  width: 100%; height: 100%; min-height: 180px; display: grid; grid-template-rows: auto 1fr auto auto; gap: 10px; text-align: left; padding: 18px 18px 16px; cursor: pointer;
  transition: border-color .25s, background-color .25s;
}
.svc:hover { border-color: var(--teal); }
.svc[aria-pressed="true"] { border-color: var(--teal); background: rgb(20 105 91 / .38); }
.svc-ic { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid var(--line); color: var(--teal-hot); }
.svc-ic svg { width: 24px; height: 24px; }
.svc[aria-pressed="true"] .svc-ic { background: var(--teal-hot); color: #03100C; border-color: var(--teal-hot); }
.svc-name { align-self: end; font: 650 1.12rem/1.2 var(--f-display); font-stretch: 114%; }
.svc-price { font: 400 .78rem/1 var(--f-mono); }
.svc-price b { font-weight: 600; color: var(--teal-hot); font-size: .95rem; }
.svc-state { display: flex; align-items: center; gap: 8px; padding-top: 12px; border-top: 1px solid var(--line-soft); font: 500 .6875rem/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.svc-box { width: 18px; height: 18px; display: grid; place-items: center; border: 1px solid var(--line-hi); }
.svc-box .ic { width: 12px; height: 12px; }
.ic-on, .svc-added { display: none; }
.svc[aria-pressed="true"] .ic-on, .svc[aria-pressed="true"] .svc-added { display: inline; }
.svc[aria-pressed="true"] .ic-add, .svc[aria-pressed="true"] .svc-add { display: none; }
.svc[aria-pressed="true"] .svc-box { background: var(--teal); border-color: var(--teal); color: #03100C; }
.svc[aria-pressed="true"] .svc-state { color: var(--teal-hot); }

.invoice { grid-column: 8 / span 5; align-self: start; position: sticky; top: calc(var(--top) + 24px); padding: 22px 24px 24px; }
.inv-head { display: flex; align-items: baseline; justify-content: space-between; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.inv-title { font: 500 .75rem/1 var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--teal); }
.inv-count { font: 400 .75rem/1 var(--f-mono); color: var(--muted); }
.inv-lines { font-family: var(--f-mono); font-size: .84rem; }
.inv-lines li { display: flex; align-items: baseline; gap: 8px; padding: 10px 0; border-bottom: 1px dashed var(--line-soft); }
.inv-lines li::after { content: ""; order: 1; flex: 1; border-bottom: 1px dotted var(--line); transform: translateY(-4px); }
.inv-lines .p { order: 2; color: var(--teal-hot); }
.inv-empty { padding: 16px 0; font: 400 .8rem/1.5 var(--f-mono); color: var(--muted); }
.inv-total { display: flex; align-items: baseline; justify-content: space-between; padding: 16px 0 6px; border-top: 1px solid var(--line); margin-top: 4px; }
.inv-total span { font: 500 .75rem/1 var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.inv-total output { font: 700 2rem/1 var(--f-display); font-stretch: 120%; color: var(--text); font-variant-numeric: tabular-nums; }
.inv-fine { font: 400 .72rem/1.5 var(--f-mono); color: var(--muted); margin-bottom: 18px; }

/* ------------------------------------------------------------------ forms */
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: grid; gap: 6px; margin-bottom: 14px; }
.field label { font: 500 .6875rem/1 var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.field input, .field textarea {
  width: 100%; min-height: 48px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 2px; background: rgb(5 9 8 / .7);
  font-family: var(--f-mono); font-size: .9rem; color: var(--text); transition: border-color .2s, background-color .2s;
}
.field textarea { resize: vertical; min-height: 132px; line-height: 1.55; }
.field input:hover, .field textarea:hover { border-color: var(--line-hi); }
.field input:focus-visible, .field textarea:focus-visible { outline: 2px solid var(--teal-hot); outline-offset: 1px; border-color: var(--teal); background: rgb(5 9 8 / .9); }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
.form-status { min-height: 1.5em; margin-top: 14px; font: 500 .8rem/1.5 var(--f-mono); color: var(--muted); }
form[data-state="sent"] .form-status { color: var(--teal-hot); }
form[data-state="sent"] .form-status::before { content: "OK  "; color: var(--teal); }
form[data-state="error"] .form-status { color: var(--amber); }
form[data-state="error"] .form-status::before { content: "ERR  "; }

/* ------------------------------------------------------------------ 07 contact */
.contact { padding-bottom: clamp(96px, 16vh, 180px); }
.contact-form { grid-column: 1 / span 5; padding: 24px 24px 22px; align-self: start; }
.form-title { font: 500 .75rem/1 var(--f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--teal); margin-bottom: 20px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.channels { grid-column: 6 / span 4; align-self: start; padding: 22px 18px 10px; background: var(--panel-a); border: 1px solid var(--line-soft); }
.ch-list { border-top: 1px solid var(--line); }
.ch { display: grid; grid-template-columns: 34px 1fr auto; grid-template-rows: auto auto; column-gap: 12px; align-items: center; padding: 14px 4px; min-height: 56px; border-bottom: 1px solid var(--line-soft); text-decoration: none; transition: background-color .2s; }
.ch:hover { background: rgb(20 105 91 / .18); }
.ch-code { grid-row: 1 / span 2; width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--line); font: 600 .6875rem/1 var(--f-mono); color: var(--teal-hot); }
.ch-l { font: 600 .95rem/1.2 var(--f-display); font-stretch: 110%; }
.ch-v { grid-column: 2; font: 400 .72rem/1.4 var(--f-mono); color: var(--muted); overflow-wrap: break-word; }
.ch .ic { grid-column: 3; grid-row: 1 / span 2; color: var(--teal); }

/* ------------------------------------------------------------------ footer */
.footer { position: relative; z-index: 2; border-top: 1px solid var(--line); background: rgb(5 9 8 / .94); }
.footer-in { display: flex; align-items: center; gap: 24px 40px; flex-wrap: wrap; padding-block: 36px 40px; }
.f-brand { display: flex; align-items: center; gap: 18px; margin-right: auto; }
.f-logo { width: 72px; height: 72px; display: grid; place-items: center; background: #EEF5F2; border-radius: 4px; padding: 8px; }
.f-logo img { width: 100%; height: 100%; object-fit: contain; }
.f-name { font: 800 1.25rem/1.1 var(--f-display); font-stretch: 125%; text-transform: uppercase; letter-spacing: .02em; }
.f-role { margin-top: 4px; font: 400 .75rem/1.4 var(--f-mono); color: var(--muted); }
.f-meta { font: 400 .75rem/1.4 var(--f-mono); color: var(--muted); }
.f-top { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font: 600 .72rem/1 var(--f-display); font-stretch: 115%; letter-spacing: .12em; text-transform: uppercase; text-decoration: none; color: var(--teal-hot); }

/* ------------------------------------------------------------------ rail + telemetry (desktop HUD) */
.rail { position: fixed; right: 18px; top: 50%; z-index: 15; transform: translateY(-50%); }
.rail ol { display: grid; gap: 2px; }
.rail a { display: flex; align-items: center; justify-content: flex-end; gap: 10px; min-height: 30px; padding: 0 6px; text-decoration: none; font: 500 .6875rem/1 var(--f-mono); letter-spacing: .1em; color: var(--dim); }
.rail li { position: relative; }
.rail .l { position: absolute; right: calc(100% + 4px); padding: 6px 8px; background: var(--panel); border: 1px solid var(--line); text-transform: uppercase; opacity: 0; transform: translateX(6px); transition: opacity .3s, transform .3s var(--ease); color: var(--text); pointer-events: none; white-space: nowrap; }
.rail .n::after { content: ""; display: inline-block; width: 14px; height: 1px; margin-left: 8px; vertical-align: middle; background: currentColor; transition: width .3s var(--ease); }
.rail a:hover .l, .rail a:focus-visible .l { opacity: 1; transform: none; }
.rail a[aria-current="true"] { color: var(--teal-hot); }
.rail a[aria-current="true"] .n::after { width: 26px; }
.telemetry {
  position: fixed; right: 18px; bottom: 18px; z-index: 1; display: grid; gap: 6px; justify-items: end;
  font: 400 .6875rem/1 var(--f-mono); letter-spacing: .04em; color: var(--muted); opacity: 0; transition: opacity .6s; font-variant-numeric: tabular-nums;
}
.telemetry.on { opacity: 1; }
.telemetry span { display: flex; gap: 8px; }
.t-k { color: var(--brand-2); }
.t-seq { margin-top: 4px; padding-top: 8px; border-top: 1px solid var(--line); color: var(--teal-hot); }

@media (min-width: 1280px) {
  /* leave a clear lane for the section rail on the right */
  .wrap, .topbar-in { padding-right: max(var(--gutter), 92px); }
}

/* ==================================================================== responsive */
@media (max-width: 1279px) {
  .rail { display: none; }
  .node-card { grid-column: 1 / span 8; }
  .sec-head, .node-index, .term { grid-column: 1 / span 8; }
  .stack-panel, .ledger-panel { grid-column: 1 / span 9; }
  .about-body { grid-column: 4 / span 5; }
  .svc-grid { grid-column: 1 / span 7; grid-template-columns: repeat(2, 1fr); }
  .contact-form { grid-column: 1 / span 6; }
  .channels { grid-column: 7 / span 4; }
}
@media (max-width: 1279px) { .telemetry { display: none; } }
@media (max-width: 1100px) {
  .topnav a .n { display: none; }
  .stack-groups { grid-template-columns: repeat(2, 1fr); }
  .sg:nth-child(odd of .sg) { border-left: 0; }
  .sg:nth-child(n + 3 of .sg) { border-top: 1px solid var(--line-soft); }
}
@media (max-width: 1023px) {
  .node-card, .sec-head, .node-index, .term, .stack-panel, .ledger-panel { grid-column: 1 / -1; }
  .operator { grid-column: 1 / span 4; }
  .about-body { grid-column: 5 / span 8; }
  .svc-grid { grid-column: 1 / -1; grid-template-columns: repeat(3, 1fr); }
  .invoice { grid-column: 1 / -1; position: relative; top: 0; margin-top: 16px; }
  .contact-form { grid-column: 1 / span 7; }
  .channels { grid-column: 8 / span 5; }
}

/* ------------------------------------------------------------------ phone (4-col grid) */
@media (max-width: 767px) {
  :root { --gap: 16px; --top: 60px; }
  body { font-size: 1rem; }
  .grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .grid > * { grid-column: 1 / -1 !important; grid-row: auto !important; }
  .sec { padding-block: 104px 32px; }

  .stage-vignette { background: radial-gradient(130% 70% at 50% 26%, transparent 30%, rgb(5 9 8 / .6) 75%, rgb(5 9 8 / .88) 100%); }
  .core-poster { left: 50%; top: 27%; width: 118vw; }
  .sat-labels { display: none; }

  /* top bar: logo + hire + menu */
  .brand-txt span { display: none; }
  .topbar-hire { display: none; }
  .menu-btn {
    display: inline-flex; align-items: center; gap: 10px; min-height: 44px; min-width: 44px; padding: 0 14px; border: 1px solid var(--line-hi); border-radius: 2px; background: rgb(5 9 8 / .6);
    font: 600 .7rem/1 var(--f-display); font-stretch: 115%; letter-spacing: .14em; text-transform: uppercase; cursor: pointer;
  }
  .menu-lines { position: relative; width: 16px; height: 8px; border-top: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transition: transform .3s; }
  .menu-btn[aria-expanded="true"] .menu-lines { transform: rotate(90deg); }
  .topnav { position: fixed; left: 0; right: 0; top: var(--top); background: rgb(5 9 8 / .97); border-bottom: 1px solid var(--line); padding: 8px var(--gutter) 20px; display: none; }
  .topnav.open { display: block; }
  .topnav ul { flex-direction: column; gap: 0; }
  .topnav a { min-height: 52px; font-size: .85rem; border-bottom: 1px solid var(--line-soft); padding-inline: 0; }
  .topnav a .n { display: inline; margin-right: 8px; }

  /* hero: core sits in the top third, copy below */
  .hero-in { padding-top: calc(var(--top) + 36vh); padding-bottom: 20px; }
  .hero::before { content: ""; position: absolute; inset: 30% 0 0; background: linear-gradient(180deg, transparent, rgb(5 9 8 / .75) 22%, rgb(5 9 8 / .9)); pointer-events: none; }
  .hero-in { position: relative; }
  .hero-name { font-size: min(23vw, 6.4rem); margin-block: 16px 16px; }
  .hn-line--2 { -webkit-text-stroke-width: 1.2px; padding-left: .3em; }
  .hero-role { font-size: .95rem; }
  .engineer { font-size: 1.25rem; }
  .cta-row { margin-top: 26px; display: grid; grid-template-columns: 1fr 1fr; }
  .cta-row .btn:first-child { grid-column: 1 / -1; }
  .cta-row .btn { padding: 0 10px; letter-spacing: .08em; gap: 8px; }
  .cta-row .btn-sub { display: none; }
  .hero-meta { grid-template-columns: 1fr 1fr; margin-top: 32px; }
  .hero-meta > div { padding: 12px 12px 12px 0; flex-direction: column; gap: 4px; }
  .hero-meta > div + div { padding-left: 0; border-left: 0; }
  .hero-meta > div:nth-child(even) { padding-left: 12px; border-left: 1px solid var(--line-soft); }
  .hero-meta > div:nth-child(n + 3) { border-top: 1px solid var(--line-soft); }

  .sec-head { margin-bottom: 32px; }
  .sec-title { font-size: clamp(1.9rem, 8.4vw, 2.4rem); }
  .operator { display: grid; grid-template-columns: 38% 1fr; gap: 16px; align-items: start; margin-bottom: 28px; }
  .spec { margin-top: 0; }
  .spec > div { grid-template-columns: 1fr; gap: 2px; padding: 7px 0; }
  .spec-wide { grid-column: 1 / -1; }
  .lead { margin-bottom: 28px; }

  .stack-groups { grid-template-columns: 1fr 1fr; }
  .sg { padding: 18px 16px 20px; }
  .sg-name { font-size: 1.02rem; }
  .sg-item { grid-template-columns: 30px 1fr; }

  .node-index ol { columns: 1; }
  .node-index a { padding: 12px 16px; }
  .nodes { margin-top: 40px; }
  .node { min-height: 0; display: block; padding-block: 10px; }
  .node-card { grid-template-columns: 1fr; }
  .node-meta > span { padding: 12px 12px; }
  .nm-db { display: none !important; }
  .node-title { padding: 20px 18px 0; font-size: 1.55rem; }
  .node-host { padding: 8px 18px 0; }
  .node-body { grid-template-columns: 1fr; gap: 18px; padding: 16px 18px 20px; }
  .node-preview { order: -1; aspect-ratio: 16 / 9; }
  .poster-idx { font-size: 4rem; }
  .node-foot { flex-direction: column; align-items: stretch; padding: 16px 18px 18px; gap: 16px; }
  .btn--launch { width: 100%; }

  .ledger { grid-template-columns: 1fr; }
  .lr { padding: 14px 16px 16px; grid-template-columns: 28px 1fr auto; }
  .lr:nth-child(odd) { border-right: 0; }
  .lr-meter { left: 16px; right: 16px; }
  .ledger-sum { padding: 14px 16px; }

  .log-static, .log-stream { padding: 14px 16px 18px; font-size: .8rem; }
  .log-static li, .log-line { grid-template-columns: 1fr; gap: 2px; }
  .term-bar { padding: 12px 16px; }
  .term-path { display: none; }
  .log-stream { min-height: calc(5 * 4.4em); }

  .svc-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .svc { min-height: 168px; padding: 14px 14px 12px; }
  .svc-name { font-size: 1rem; }
  .invoice { padding: 18px 16px 20px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .form-actions .btn { flex: 1; }
  .contact-form { padding: 20px 16px 18px; margin-bottom: 36px; }
  .channels { padding: 18px 14px 6px; }
  .footer-in { flex-direction: column; align-items: flex-start; gap: 18px; }
}
@media (max-width: 380px) {
  .svc-grid { grid-template-columns: 1fr; }
  .svc { min-height: 0; grid-template-columns: 44px 1fr auto; grid-template-rows: auto auto; column-gap: 14px; align-items: center; }
  .svc-ic { grid-row: 1 / span 2; }
  .svc-name { align-self: end; }
  .svc-state { grid-column: 3; grid-row: 1 / span 2; border: 0; padding: 0; }
  .svc-state .svc-add, .svc-state .svc-added { display: none !important; }
  .cta-row { grid-template-columns: 1fr; }
  .stack-groups { grid-template-columns: 1fr; }
  .sg + .sg { border-left: 0; border-top: 1px solid var(--line-soft); }
}

/* ------------------------------------------------------------------ popup (admin panel → popups table) */
.promo { width: min(460px, calc(100vw - 32px)); max-height: calc(100dvh - 32px); padding: 0; border: 0; background: none; color: var(--text); overflow: visible; }
.promo::backdrop { background: rgb(2 6 5 / .74); }
.promo[open] { animation: promo-in .45s var(--ease); }
@keyframes promo-in { from { opacity: 0; transform: translateY(10px); } }
.promo-in { padding: 26px 24px 22px; max-height: calc(100dvh - 32px); overflow: auto; }
.promo-close { position: absolute; top: 8px; right: 8px; display: grid; place-items: center; width: 40px; height: 40px; border: 1px solid var(--line); background: var(--bg); color: var(--muted); cursor: pointer; }
.promo-close:hover { color: var(--teal-hot); border-color: var(--teal); }
.promo-close .ic { width: 14px; height: 14px; }
.promo-img { width: 100%; max-height: 200px; object-fit: cover; margin-bottom: 18px; border: 1px solid var(--line); }
.promo-title { font-size: 1.55rem; line-height: 1.15; letter-spacing: -.01em; margin: -8px 0 12px; padding-right: 36px; }
.promo-body { color: var(--muted); white-space: pre-line; margin-bottom: 20px; }
.promo .btn { width: 100%; }
.promo-foot { margin-top: 12px; font: 500 .75rem/1.4 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--dim); }

/* ------------------------------------------------------------------ reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

/* ==========================================================================
   06 · VOYAGE — additions on top of 01 · CORE's stylesheet (../01-core/core.css):
   the pre-flight gate, the sound switch, the extra telemetry, the jump banner and the readout line.
   Same tokens, same type; amber stays the one warm "live" signal.
   ========================================================================== */
html.gated, html.gated body { overflow: hidden; }
/* hold the hero's entrance until the ship is engaged, then let it play */
.gated [data-intro] { animation: none !important; opacity: 0; }

/* ------------------------------------------------------------------ pre-flight */
.preflight {
  position: fixed; inset: 0; z-index: 60; display: none; place-items: center; padding: var(--gutter);
  background: rgb(5 9 8 / .74); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.js.has-motion .preflight { display: grid; }
.preflight.is-out { opacity: 0; visibility: hidden; transition: opacity 1.2s var(--ease), visibility 0s linear 1.2s; }
.pf-in { position: relative; width: min(520px, 100%); padding: 28px; background: var(--panel-a); border: 1px solid var(--line); }
.pf-k { margin: 0 0 6px; font: 500 .6875rem/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--teal); }
.pf-title { margin: 0 0 20px; font: 700 clamp(30px, 4vw, 42px)/1 var(--f-display); letter-spacing: -.02em; text-transform: uppercase; }
.pf-checks { list-style: none; margin: 0 0 18px; padding: 0; display: grid; gap: 9px; font: 500 .75rem/1.3 var(--f-mono); letter-spacing: .03em; }
.pf-checks li { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; color: var(--dim); transition: color .3s; }
.pf-checks li::before { content: "[ ]"; color: var(--dim); }
.pf-checks b { font-weight: 500; }
.pf-checks li.ok { color: var(--text); }
.pf-checks li.ok::before { content: "[✓]"; color: var(--teal); }
.pf-checks li.ok b { color: var(--teal-hot); }
.pf-meter { height: 2px; margin: 0 0 22px; background: var(--line-soft); overflow: hidden; }
.pf-meter i { display: block; height: 100%; background: var(--teal); transform: scaleX(0); transform-origin: left; transition: transform .5s var(--ease); }
.pf-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.pf-actions .btn:disabled { opacity: .45; cursor: default; }
.pf-fine { margin: 16px 0 0; font: 400 .6875rem/1.4 var(--f-mono); letter-spacing: .04em; color: var(--dim); }

/* ------------------------------------------------------------------ sound switch (top bar) */
.snd {
  display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 12px; flex: none;
  border: 1px solid var(--line-hi); background: rgb(5 9 8 / .35); color: var(--text); cursor: pointer;
  font: 500 .6875rem/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase;
  transition: border-color .3s, color .3s;
}
.snd:hover, .snd[aria-pressed="true"] { border-color: var(--teal); color: var(--teal-hot); }
.snd-eq { display: inline-flex; gap: 2px; align-items: flex-end; height: 10px; }
.snd-eq i { width: 2px; height: 2px; background: currentColor; }
.snd[aria-pressed="true"] .snd-eq i { animation: snd .9s ease-in-out infinite alternate; }
.snd[aria-pressed="true"] .snd-eq i:nth-child(2) { animation-delay: -.3s; }
.snd[aria-pressed="true"] .snd-eq i:nth-child(3) { animation-delay: -.6s; }
.snd[aria-pressed="true"] .snd-eq i:nth-child(4) { animation-delay: -.15s; }
@keyframes snd { to { height: 10px; } }

/* ------------------------------------------------------------------ telemetry extras, jump banner, readout */
.t-mode { color: var(--amber); letter-spacing: .12em; }
.jump {
  position: fixed; z-index: 16; left: 50%; top: calc(var(--top) + 18px); transform: translateX(-50%);
  display: flex; gap: 12px; align-items: center; padding: 9px 14px; white-space: nowrap; pointer-events: none;
  background: rgb(5 9 8 / .72); border: 1px solid var(--line-hi);
  font: 500 .6875rem/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--text);
  opacity: 0; transition: opacity .4s;
}
.jump-k { color: var(--amber); }
html.is-warp .jump { opacity: 1; }
.readout {
  position: fixed; z-index: 15; right: 18px; bottom: 150px; margin: 0; max-width: 44ch; text-align: right; pointer-events: none;
  font: 400 .6875rem/1.5 var(--f-mono); letter-spacing: .04em; color: var(--muted); font-variant-numeric: tabular-nums;
  opacity: 0; transition: opacity .5s;
}
.readout b { color: var(--teal-hot); font-weight: 500; }
html.is-readout .readout { opacity: 1; }

@media (max-width: 767px) {
  .snd { height: 36px; padding: 0 10px; }
  .snd-l { display: none; }
  .jump { top: calc(var(--top) + 10px); font-size: .625rem; padding: 7px 10px; }
  .readout { display: none; }
}