/* =============================================================================
   Harnessaur — site styles
   Near-black, warm, minimal. One accent, used as light more than as paint.
   ========================================================================== */

/* ------------------------------------------------------------------ fonts */

@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter-var-latin.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
  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: 'JetBrains Mono';
  src: url('../fonts/jbmono-var-latin.woff2') format('woff2-variations');
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
  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: 'Instrument Serif';
  src: url('../fonts/instrument-serif-latin-italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
  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: 'Instrument Serif';
  src: url('../fonts/instrument-serif-latin.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  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;
}

/* ----------------------------------------------------------------- tokens */

:root {
  --bg: #0c0b0a;
  --bg-raise: #131110;
  --bg-sunk: #080706;

  --fg-strong: #f4ede4;
  --fg: #b4aba1;
  --fg-weak: #9d948a;
  --fg-faint: #857d73;

  --border: #262220;
  --border-soft: #191614;
  --border-hair: rgba(244, 237, 228, 0.075);

  --ember: #ffb02e;
  --ember-hot: #ffd79a;
  --ember-deep: #cf8419;
  --ember-wash: rgba(255, 176, 46, 0.09);
  --steel: #5b636e;

  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-serif: 'Instrument Serif', 'Iowan Old Style', Georgia, 'Times New Roman', serif;

  --page-max: 74rem;
  --col-max: 60rem;
  --measure: 55ch;
  --measure-tight: 46ch;

  --pad-x: clamp(1.25rem, 5vw, 4.5rem);
  --section-gap: clamp(6rem, 13vw, 15rem);

  --step--2: 0.6875rem;
  --step--1: 0.8125rem;
  --step-0: 1.0625rem;
  --step-1: 1.1875rem;
  --step-2: clamp(1.35rem, 1.15rem + 0.8vw, 1.75rem);
  --step-3: clamp(1.85rem, 1.35rem + 2.1vw, 2.9rem);
  --step-4: clamp(2.5rem, 1.55rem + 4.1vw, 4.35rem);

  --lh-body: 1.72;
  --lh-tight: 1.02;

  --radius: 3px;
  --dur: 190ms;
  --dur-slow: 420ms;
  --ease: cubic-bezier(0.16, 0.84, 0.32, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);

  color-scheme: dark;
}

/* ------------------------------------------------------------------ reset */

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: var(--lh-body);
  font-feature-settings: 'cv05' 1, 'ss01' 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg, canvas { display: block; max-width: 100%; }
img { height: auto; }

h1, h2, h3, h4, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }

::selection {
  background: var(--ember);
  color: #17130b;
}

/* ----------------------------------------------------------------- focus */

:focus { outline: none; }

:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: 0.75rem;
  z-index: 200;
  padding: 0.6rem 1rem;
  background: var(--ember);
  color: #17130b;
  font: 600 var(--step--1) / 1 var(--font-mono);
  border-radius: var(--radius);
  transform: translateY(-160%);
  transition: transform var(--dur) var(--ease);
}

.skip:focus-visible { transform: translateY(0); }

/* ------------------------------------------------------------------ stage */

#stage {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: var(--bg);
  contain: strict;
}

#rig {
  width: 100%;
  height: 100%;
  pointer-events: auto;
  touch-action: pan-y;
  opacity: 0;
  transition: opacity 700ms var(--ease);
}

#rig.is-live { opacity: 1; }

#stage-fallback {
  position: absolute;
  inset: 0;
  display: none;
  background: var(--bg) url('../img/rig-poster.jpg') center / cover no-repeat;
}

.fallback-note {
  position: absolute;
  left: 50%;
  bottom: 1.75rem;
  transform: translateX(-50%);
  max-width: 46ch;
  text-align: center;
  font: 400 var(--step--2) / 1.7 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--fg-faint);
  background: rgba(8, 7, 6, 0.8);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 0.5rem 0.9rem;
}

#stage.no-webgl #stage-fallback { display: block; }
#stage.no-webgl #rig { display: none; }

#page {
  position: relative;
  z-index: 1;
  isolation: isolate;
}

/* ---------------------------------------------------------------- layout */

.wrap {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.col {
  width: 100%;
  max-width: var(--col-max);
}

.col-wide { width: 100%; }

.prose { max-width: var(--measure); }
.prose-tight { max-width: var(--measure-tight); }

/* Text column with an engineering-drawing margin for citations. */
.split { display: grid; gap: 2.75rem; }

.margin-note .pull { margin-top: 0; }

@media (min-width: 76rem) {
  .split {
    grid-template-columns: minmax(0, var(--measure)) minmax(15rem, 20rem);
    gap: 4.5rem;
    align-items: start;
  }

  .margin-note {
    position: sticky;
    top: 7.5rem;
    padding-top: 0.4rem;
  }

  .margin-note .pull p { font-size: var(--step-1); line-height: 1.42; }
}

section { position: relative; }

.opaque {
  background: var(--bg);
  padding-block: var(--section-gap);
}

.opaque::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -14rem;
  height: 14rem;
  background: linear-gradient(to bottom, rgba(12, 11, 10, 0), var(--bg) 88%);
  pointer-events: none;
}

.stage-window {
  background: transparent;
  pointer-events: none;
}

.stage-window a,
.stage-window button,
.stage-window .grabbable { pointer-events: auto; }

/* --------------------------------------------------------------- headings */

.eyebrow {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font: 500 var(--step--2) / 1.4 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 1.75rem;
}

.eyebrow .num { color: var(--ember-deep); }

.eyebrow::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-hair);
  transform: translateY(-0.25em);
}

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  color: var(--fg-strong);
  letter-spacing: -0.012em;
  text-wrap: balance;
}

h1 {
  font-size: var(--step-4);
  line-height: var(--lh-tight);
  letter-spacing: -0.022em;
  max-width: 18ch;
}

h2 {
  font-size: var(--step-3);
  line-height: 1.1;
  max-width: 22ch;
}

h3 {
  font-size: var(--step-2);
  line-height: 1.2;
  max-width: 30ch;
}

.h-sans {
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: -0.015em;
}

.lead {
  font-size: var(--step-1);
  line-height: 1.62;
  color: var(--fg);
}

.lead strong,
p strong {
  color: var(--fg-strong);
  font-weight: 500;
}

p + p { margin-top: 1.15em; }

h2 + .lead,
h2 + p { margin-top: 1.6rem; }

h3 + p { margin-top: 0.9rem; }

.lead + .prose,
.lead + .grid-2,
.prose + .prose { margin-top: 1.15em; }

/* ------------------------------------------------------------------ links */

a { color: inherit; }

.prose a,
.link {
  color: var(--fg-strong);
  text-decoration: underline;
  text-decoration-color: rgba(255, 176, 46, 0.45);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: text-decoration-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.prose a:hover,
.link:hover {
  color: var(--ember);
  text-decoration-color: var(--ember);
}

.mono { font-family: var(--font-mono); }

code, .code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--ember-hot);
  background: rgba(255, 176, 46, 0.055);
  padding: 0.1em 0.32em;
  border-radius: 2px;
}

/* ------------------------------------------------------------------- nav */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  transition: background var(--dur-slow) var(--ease), border-color var(--dur-slow) var(--ease),
    backdrop-filter var(--dur-slow) var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.is-stuck {
  background: rgba(12, 11, 10, 0.84);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--border-soft);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--fg-strong);
  font: 600 var(--step--1) / 1 var(--font-mono);
  letter-spacing: 0.02em;
  flex: none;
}

.brand svg { width: 52px; height: 29px; overflow: visible; flex: none; }

.brand .emblem-body {
  fill: var(--fg-strong);
  transition: fill var(--dur) var(--ease), transform 520ms cubic-bezier(0.18, 1.4, 0.4, 1);
  transform-origin: 30px 24px;
}

.brand:hover .emblem-body,
.brand:focus-visible .emblem-body { transform: translateY(1.1px) scaleY(0.965); }

@media (prefers-reduced-motion: reduce) {
  .brand:hover .emblem-body,
  .brand:focus-visible .emblem-body { transform: none; }
}

.brand .emblem-chord {
  fill: none;
  stroke: var(--fg-faint);
  stroke-width: 1;
  stroke-dasharray: 2.2 2.4;
  transition: stroke var(--dur) var(--ease);
}

.brand .emblem-node {
  fill: var(--bg);
  stroke: var(--fg-weak);
  stroke-width: 1.2;
  transition: fill var(--dur) var(--ease), stroke var(--dur) var(--ease);
}

.brand:hover .emblem-node,
.brand:focus-visible .emblem-node { fill: var(--ember); stroke: var(--ember); }

.brand:hover .emblem-chord,
.brand:focus-visible .emblem-chord { stroke: var(--ember-deep); }

.nav-links {
  display: flex;
  gap: 1.6rem;
  margin-left: auto;
  align-items: center;
}

.nav-links a {
  font: 400 var(--step--1) / 1 var(--font-mono);
  color: var(--fg-weak);
  text-decoration: none;
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--dur) var(--ease);
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0.15rem;
  height: 1px;
  background: var(--ember);
  transition: right var(--dur-slow) var(--ease);
}

.nav-links a:hover,
.nav-links a[aria-current='true'] { color: var(--fg-strong); }

.nav-links a:hover::after,
.nav-links a[aria-current='true']::after { right: 0; }

/* ---------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font: 500 var(--step--1) / 1 var(--font-mono);
  letter-spacing: 0.01em;
  padding: 0.78rem 1.05rem 0.78rem 1.15rem;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
    border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  white-space: nowrap;
}

.btn .arrow { transition: transform var(--dur-slow) var(--ease-out); }
.btn:hover .arrow { transform: translateX(3px); }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--fg-strong);
  color: #14110d;
  font-weight: 600;
}

.btn-primary:hover { background: #fff8ef; }

.btn-ghost {
  border-color: var(--border);
  color: var(--fg);
  background: rgba(19, 17, 16, 0.5);
}

.btn-ghost:hover {
  border-color: var(--ember-deep);
  color: var(--fg-strong);
  background: rgba(255, 176, 46, 0.06);
}

.btn-sm { padding: 0.5rem 0.8rem; font-size: var(--step--2); }

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

#hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: 8.5rem 4.5rem;
}

.hero-grid { display: grid; gap: 3rem; }

.hero-copy { max-width: 40rem; }

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font: 500 var(--step--2) / 1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-weak);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.45rem 0.8rem 0.45rem 0.6rem;
  background: rgba(8, 7, 6, 0.55);
  margin-bottom: 1.7rem;
}

.status .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ember);
  box-shadow: 0 0 0 3px rgba(255, 176, 46, 0.14);
  animation: breathe 3.4s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

h1 .accent {
  font-style: italic;
  color: var(--ember);
}

.hero-sub {
  margin-top: 1.6rem;
  max-width: 54ch;
  font-size: var(--step-1);
  line-height: 1.62;
}

.hero-sub + .hero-sub { margin-top: 1rem; font-size: var(--step-0); color: var(--fg-weak); }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.2rem;
}

.hero-foot {
  margin-top: 1.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  align-items: flex-start;
  border-top: 1px solid var(--border-soft);
  padding-top: 0.9rem;
}

.readout {
  font: 400 var(--step--2) / 1.7 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--fg-faint);
  text-transform: uppercase;
}

.readout b {
  color: var(--fg-weak);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.readout .live { color: var(--ember); }

.hint {
  font: 400 var(--step--2) / 1.7 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--fg-faint);
  max-width: 60ch;
  transition: opacity var(--dur-slow) var(--ease);
}

.hint kbd {
  font: inherit;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 3px;
  padding: 0.05em 0.35em;
  color: var(--fg-weak);
}

/* ------------------------------------------------------- definition chip */

.defn {
  margin-top: 1.55rem;
  border-left: 1px solid var(--border);
  padding-left: 1.15rem;
  max-width: 46ch;
}

.defn dt {
  font: 500 var(--step--1) / 1.4 var(--font-mono);
  color: var(--fg-strong);
}

.defn dt em { color: var(--fg-faint); font-style: italic; font-weight: 400; }

.defn dd { margin-top: 0.4rem; font-size: var(--step-0); color: var(--fg); }

/* ------------------------------------------------------------- rail ticks */

.railed { position: relative; }

@media (min-width: 60rem) {
  .railed::before {
    content: '';
    position: absolute;
    left: calc(var(--pad-x) * -0.55);
    top: 0.55em;
    width: 1px;
    height: calc(100% - 0.55em);
    background: linear-gradient(to bottom, var(--border), transparent 85%);
  }
}

/* ------------------------------------------------------------------ lists */

.spec {
  margin-top: 2.75rem;
  border-top: 1px solid var(--border-soft);
}

.spec li {
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  gap: 0 1.25rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--border-soft);
  align-items: baseline;
}

.spec .k {
  font: 500 var(--step--2) / 1.7 var(--font-mono);
  color: var(--ember-deep);
  letter-spacing: 0.06em;
}

.spec .t {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--fg-strong);
  letter-spacing: 0.01em;
}

.spec .d { color: var(--fg-weak); font-size: var(--step-0); margin-top: 0.3rem; }

@media (min-width: 46rem) {
  .spec li { grid-template-columns: 2.75rem 13rem 1fr; }
  .spec .d { margin-top: 0; }
}

.bullets { margin-top: 2rem; max-width: var(--measure); }

.bullets li {
  position: relative;
  padding-left: 1.7rem;
  margin-bottom: 0.95rem;
  color: var(--fg);
}

.bullets li::before {
  content: '';
  position: absolute;
  left: 0.15rem;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--ember-deep);
}

.bullets li b { color: var(--fg-strong); font-weight: 500; }

/* ------------------------------------------------------------------ quote */

.pull {
  margin: 3rem 0 0;
  padding-left: 1.5rem;
  border-left: 2px solid var(--ember-deep);
  max-width: 46ch;
}

.pull p {
  font-family: var(--font-serif);
  font-size: var(--step-2);
  line-height: 1.34;
  color: var(--fg-strong);
  letter-spacing: -0.005em;
}

.pull footer {
  margin-top: 0.9rem;
  font: 400 var(--step--2) / 1.6 var(--font-mono);
  letter-spacing: 0.05em;
  color: var(--fg-faint);
  text-transform: uppercase;
}

.pull footer a { color: var(--fg-weak); text-decoration-color: var(--border); }
.pull footer a:hover { color: var(--ember); }

/* ----------------------------------------------------------------- figure */

.fig {
  margin-top: 3.5rem;
  max-width: var(--col-max);
}

.fig-frame {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: #0c0b0a;
  overflow: hidden;
  position: relative;
}

.fig-frame img {
  width: 100%;
  display: block;
}

/* live figures — same renderer as the rig, one canvas per diagram */
.fig-frame.is-live { aspect-ratio: 16 / 9; }

.fig-live {
  position: relative;
  width: 100%;
  height: 100%;
  background: var(--bg);
}

.fig-live canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.fig-lab {
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--font-mono);
  font-weight: 450;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  line-height: 1.25;
  pointer-events: none;
  will-change: transform;
  text-shadow: 0 0 14px rgba(12, 11, 10, 0.95), 0 0 4px rgba(12, 11, 10, 0.9);
  color: var(--fg);
}

.fig-live { cursor: grab; touch-action: pan-y; }
.fig-live.is-over { cursor: pointer; }
.fig-live.is-grabbing { cursor: grabbing; }
.fig-live:focus-visible { outline: 2px solid var(--ember); outline-offset: -2px; }

.fig-hint {
  position: absolute;
  left: 50%;
  bottom: 0.7rem;
  transform: translateX(-50%);
  margin: 0;
  max-width: 92%;
  text-align: center;
  font: 400 var(--step--2) / 1.4 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--fg-faint);
  opacity: 0.5;
  transition: opacity 240ms ease;
  pointer-events: none;
}

.fig-live:hover .fig-hint,
.fig-live:focus-visible .fig-hint { opacity: 0.92; }

@media (hover: none) { .fig-hint { opacity: 0.8; } }

.fig-lab.is-l { letter-spacing: 0.13em; font-weight: 500; }
.fig-lab.is-s { letter-spacing: 0.085em; text-transform: none; }
.fig-lab.is-ember { color: var(--ember); }
.fig-lab.is-dim { color: var(--fg-faint); }

.fig figcaption {
  margin-top: 0.9rem;
  display: flex;
  gap: 0.75rem;
  font: 400 var(--step--2) / 1.65 var(--font-mono);
  letter-spacing: 0.03em;
  color: var(--fg-faint);
}

.fig figcaption .fnum { color: var(--ember-deep); flex: none; letter-spacing: 0.1em; }

/* ------------------------------------------------------------------ cards */

.grid-2 {
  display: grid;
  gap: 2.5rem;
  margin-top: 3.25rem;
}

@media (min-width: 52rem) { .grid-2 { grid-template-columns: 1fr 1fr; gap: 3.5rem; } }

.grid-3 { display: grid; gap: 2.25rem; margin-top: 3.25rem; }

@media (min-width: 52rem) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

.note {
  border-top: 1px solid var(--border);
  padding-top: 1.1rem;
}

.note h4 {
  font: 500 var(--step--1) / 1.5 var(--font-mono);
  color: var(--fg-strong);
  margin: 0 0 0.55rem;
  letter-spacing: 0.01em;
}

.note p { color: var(--fg-weak); font-size: var(--step-0); }

/* ------------------------------------------------------------- terminal-ish */

.slab {
  margin-top: 3rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: var(--bg-sunk);
  overflow: hidden;
}

.slab-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1.1rem;
  border-bottom: 1px solid var(--border-soft);
  font: 500 var(--step--2) / 1.5 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.slab-head .tag {
  margin-left: auto;
  color: var(--ember-deep);
  letter-spacing: 0.1em;
}

.slab-body {
  padding: 1.35rem 1.1rem;
  overflow-x: auto;
  font: 400 var(--step--1) / 1.9 var(--font-mono);
  color: var(--fg);
}

.slab-body .row { display: block; white-space: pre; }
.slab-body .c-dim { color: var(--fg-faint); }
.slab-body .c-em { color: var(--ember); }
.slab-body .c-str { color: var(--fg-strong); }

.tbl {
  width: 100%;
  border-collapse: collapse;
  font: 400 var(--step--1) / 1.7 var(--font-mono);
  min-width: 30rem;
}

.tbl th,
.tbl td {
  text-align: left;
  padding: 0.55rem 1rem 0.55rem 0;
  border-bottom: 1px solid var(--border-soft);
  white-space: nowrap;
}

.tbl th {
  font-weight: 500;
  color: var(--fg-faint);
  font-size: var(--step--2);
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.tbl td { color: var(--fg-weak); font-variant-numeric: tabular-nums; }
.tbl td:first-child { color: var(--fg-strong); }
.tbl tr:last-child td { border-bottom: 0; }
.tbl .pend { color: var(--fg-faint); }

/* ------------------------------------------------------------- load stage */

#load { padding-block: var(--section-gap); }

.load-grid { display: grid; gap: 3rem; align-items: start; }

.load-panel {
  max-width: 40rem;
  padding: 1.75rem 1.9rem 1.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(8, 7, 6, 0.74);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  pointer-events: auto;
}

.load-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.85rem;
}

.gauge {
  margin-top: 1.85rem;
  display: grid;
  gap: 0.6rem;
}

.gauge-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr 4.5rem;
  align-items: center;
  gap: 0.85rem;
  font: 400 var(--step--2) / 1.6 var(--font-mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.gauge-track {
  display: block;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.gauge-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--ember);
  border-radius: 2px;
  transition: width 320ms var(--ease);
}

.gauge-fill.cool { background: var(--steel); }

.gauge-val {
  text-align: right;
  color: var(--fg-weak);
  font-variant-numeric: tabular-nums;
}

.log {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border-soft);
  padding-top: 0.9rem;
  min-height: 4.5rem;
  font: 400 var(--step--2) / 1.85 var(--font-mono);
  color: var(--fg-faint);
}

.log li {
  display: flex;
  gap: 0.7rem;
  opacity: 0;
  transform: translateY(4px);
  animation: logIn 380ms var(--ease-out) forwards;
}

.log li .ts { color: var(--ember-deep); flex: none; }
.log li:first-child { color: var(--fg-weak); }

@keyframes logIn {
  to { opacity: 1; transform: none; }
}

/* ---------------------------------------------------------------- footer */

.foot {
  background: var(--bg);
  border-top: 1px solid var(--border-soft);
  padding-block: clamp(4rem, 8vw, 7rem) 3rem;
  position: relative;
}

.foot-grid { display: grid; gap: 3.5rem; }

@media (min-width: 60rem) {
  .foot-grid { grid-template-columns: 1.15fr 1fr; gap: 5rem; }
}

.contact-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.7rem;
  background: var(--bg-raise);
}

.contact-card + .contact-card { margin-top: 1.1rem; }

.contact-card h4 {
  font: 500 var(--step--2) / 1.5 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin: 0 0 0.7rem;
}

.contact-card p { color: var(--fg-weak); font-size: var(--step-0); margin-bottom: 1.1rem; }

.mailto {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font: 500 var(--step-1) / 1.3 var(--font-mono);
  color: var(--fg-strong);
  text-decoration: none;
  border-bottom: 1px solid var(--ember-deep);
  padding-bottom: 0.2rem;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
  word-break: break-word;
}

.mailto:hover { color: var(--ember); border-color: var(--ember); }

.sources { margin-top: 0; }

.sources li {
  display: grid;
  grid-template-columns: 1.9rem 1fr;
  gap: 0.6rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border-soft);
  font-size: var(--step--1);
  line-height: 1.6;
}

.sources .n {
  font: 400 var(--step--2) / 1.9 var(--font-mono);
  color: var(--ember-deep);
}

.sources a { color: var(--fg); text-decoration-color: var(--border); }
.sources a:hover { color: var(--ember); }
.sources .meta { color: var(--fg-faint); font-family: var(--font-mono); font-size: var(--step--2); }

.colophon {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  font: 400 var(--step--2) / 1.8 var(--font-mono);
  letter-spacing: 0.05em;
  color: var(--fg-faint);
}

.colophon .sep { color: var(--border); }

/* --------------------------------------------------------------- reveals */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 620ms var(--ease-out), transform 620ms var(--ease-out);
}

.reveal.is-in { opacity: 1; transform: none; }

.reveal[data-delay='1'] { transition-delay: 70ms; }
.reveal[data-delay='2'] { transition-delay: 140ms; }
.reveal[data-delay='3'] { transition-delay: 210ms; }

/* --------------------------------------------- simulation-off variants -- */

.sim-off { display: none; }

.no-sim .sim-only,
.no-sim .hero-foot,
.no-sim .load-controls,
.no-sim .gauge,
.no-sim .log { display: none; }

.no-sim .sim-off { display: block; }

/* Nav CTA shortens rather than clipping on the narrowest phones. */
.cta-short { display: none; }

@media (max-width: 23rem) {
  .cta-full { display: none; }
  .cta-short { display: inline; }
  .brand span { font-size: var(--step--2); }
  .brand svg { width: 42px; height: 24px; }
  .nav-inner { gap: 0.75rem; }
}

/* ------------------------------------------------------------ utilities */

.sr-only {
  position: absolute;
  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;
}

/* Short laptop screens: keep the whole hero, including the readout, on screen. */
@media (min-width: 62rem) and (max-height: 940px) {
  #hero { padding-block: 5.8rem 2.4rem; }
  #hero h1 { font-size: clamp(2.2rem, 1.4rem + 2.5vw, 3.35rem); }
  .status { margin-bottom: 1.35rem; }
  .hero-sub { margin-top: 1.3rem; }
  .hero-actions { margin-top: 1.75rem; }
  .defn { margin-top: 1.25rem; }
  .hero-foot { margin-top: 1.15rem; padding-top: 0.8rem; }
}

/* Shorter still (1366x768, 1280x800): the definition chip restates the opening
   sentence, so it is the one thing that can go. */
@media (min-width: 62rem) and (max-height: 850px) {
  #hero { padding-block: 5.4rem 2rem; }
  #hero h1 { font-size: clamp(2rem, 1.1rem + 2.3vw, 3rem); }
  .defn { display: none; }
  .hero-actions { margin-top: 1.6rem; }
  .hero-foot { margin-top: 1.9rem; }
}

/* ------------------------------------------------------------ responsive */

@media (min-width: 62rem) {
  .hero-grid { grid-template-columns: minmax(0, 30rem) 1fr; align-items: center; }
  .hero-copy { grid-column: 1; }
  #hero { padding-block: 6.6rem 3.25rem; }
  .load-grid { grid-template-columns: minmax(0, 27rem) 1fr; }
}

@media (max-width: 61.99rem) {
  /* On narrow screens the rig takes the top of the viewport and the copy sits
     below it, on a scrim, so nothing has to be read through the simulation. */
  #hero {
    min-height: 100svh;
    align-items: flex-end;
    padding-block: 47svh 3.5rem;
  }

  #hero::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    top: 26svh;
    background: linear-gradient(to bottom, rgba(12, 11, 10, 0), rgba(12, 11, 10, 0.86) 26%, var(--bg) 62%);
    pointer-events: none;
  }

  #hero .wrap { position: relative; }

  #load { padding-block: 40svh var(--section-gap); }

  #load::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    top: 20svh;
    background: linear-gradient(to bottom, rgba(12, 11, 10, 0), rgba(12, 11, 10, 0.82) 22%, rgba(12, 11, 10, 0.94) 55%);
    pointer-events: none;
  }

  #load .wrap { position: relative; }

  .load-panel { background: rgba(8, 7, 6, 0.5); padding: 1.4rem 1.35rem 1.6rem; }
  .chip-mid { display: none; }
  .status { letter-spacing: 0.1em; }
}

@media (max-width: 47.99rem) {
  .nav-links { display: none; }
  .nav-inner { justify-content: space-between; }
  .nav .btn { margin-left: auto; }
  h1 { max-width: 100%; }
  .hero-foot { flex-direction: column; gap: 1rem; }
  .gauge-row { grid-template-columns: 6rem 1fr 3.5rem; }
  .slab-body { font-size: var(--step--2); }
}

/* --------------------------------------------------------- reduced motion */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal { opacity: 1; transform: none; }
  .status .dot { animation: none; }
  #rig { transition: none; }
}

/* ------------------------------------------------------------------ print */

@media print {
  #stage, .nav, .load-controls { display: none; }
  body { background: #fff; color: #111; }
}