/* guda-studio v5 — signal-lab instrument panel (ax) */

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/JetBrainsMono-Regular.woff2") format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/JetBrainsMono-Medium.woff2") format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/JetBrainsMono-SemiBold.woff2") format("woff2");
}

:root {
  --ax-bg: #eceef1;
  --ax-bg-deep: #e3e6eb;
  --ax-paper: #f9fafb;
  --ax-glass: rgba(249, 250, 251, 0.84);
  --ax-ink: #141820;
  --ax-muted: #4b5563;
  --ax-faint: #8b929e;
  --ax-line: #cdd2d9;
  --ax-line-soft: #dde1e7;
  --ax-tech: #3d4f63;
  --ax-tech-bright: #4d6178;
  --ax-tech-dim: #eef0f3;
  --ax-tech-glow: rgba(61, 79, 99, 0.1);
  --ax-accent: #3d4f63;
  --ax-accent-hot: #2f3d4d;
  --ax-signal: #5a4a3a;
  --ax-signal-dim: rgba(90, 74, 58, 0.08);
  --ax-status: #4a5d52;
  --ax-max: 78rem;
  --ax-header: 3.5rem;
  --ax-rail: 1.75rem;
  --ax-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ax-grid: rgba(61, 79, 99, 0.04);
  --ax-grid-fine: rgba(61, 79, 99, 0.025);
}

*, *::before, *::after { box-sizing: border-box; }
html { color-scheme: light; -webkit-font-smoothing: antialiased; }
body {
  margin: 0;
  background:
    radial-gradient(ellipse 80% 50% at 100% 0%, rgba(61, 79, 99, 0.05), transparent 55%),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgba(90, 74, 58, 0.03), transparent 50%),
    var(--ax-bg);
  color: var(--ax-ink);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.8125rem;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
::selection { background: var(--ax-tech-dim); color: var(--ax-ink); }

/* background layers */
.ax-scan {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.4;
  background-image:
    linear-gradient(var(--ax-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--ax-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 90%);
}

.ax-scan--fine {
  opacity: 0.25;
  background-size: 8px 8px;
  background-image:
    linear-gradient(var(--ax-grid-fine) 1px, transparent 1px),
    linear-gradient(90deg, var(--ax-grid-fine) 1px, transparent 1px);
}

.ax-bar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 70;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--ax-tech-bright), var(--ax-tech));
}

/* shared meters */
.ax-meter,
.ax-telem__bar i,
.ax-mod__meter i,
.ax-cell__sig i {
  display: block;
  height: 3px;
  background: var(--ax-line-soft);
  position: relative;
  overflow: hidden;
}

.ax-meter::after,
.ax-telem__bar i::after,
.ax-mod__meter i::after,
.ax-cell__sig i::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--ax-p, 50%);
  background: linear-gradient(90deg, var(--ax-tech), var(--ax-tech-bright));
}

/* header */
.ax-head {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ax-glass);
  backdrop-filter: blur(16px) saturate(1.25);
  border-bottom: 1px solid var(--ax-line);
}

.ax-head__rail {
  border-bottom: 1px solid var(--ax-line-soft);
  background: linear-gradient(90deg, rgba(61, 79, 99, 0.03), transparent 50%);
}

.ax-head__rail-in {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  max-width: var(--ax-max);
  margin: 0 auto;
  height: var(--ax-rail);
  padding: 0 clamp(1.25rem, 3vw, 2rem);
  font-size: 0.5625rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ax-faint);
  overflow: hidden;
}

.ax-led {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--ax-status);
  font-weight: 600;
}

.ax-led__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ax-status);
  box-shadow: none;
}

.ax-head__meta { white-space: nowrap; }
.ax-head__meta--dim { margin-left: auto; color: var(--ax-line); }

.ax-head__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--ax-max);
  margin: 0 auto;
  height: var(--ax-header);
  padding: 0 clamp(1.25rem, 3vw, 2rem);
}

.ax-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.ax-mark__idx {
  font-size: 0.5625rem;
  font-weight: 500;
  color: var(--ax-faint);
  padding: 0.15rem 0.35rem;
  border: 1px solid var(--ax-line-soft);
  background: var(--ax-paper);
}

.ax-mark__dot { color: var(--ax-tech); }

.ax-menu {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.ax-menu a {
  font-size: 0.625rem;
  color: var(--ax-faint);
  text-transform: lowercase;
  transition: color 0.2s;
}

.ax-menu a:hover,
.ax-menu a.is-on { color: var(--ax-ink); }

.ax-menu a.is-on {
  box-shadow: inset 0 -2px 0 var(--ax-tech);
  padding-bottom: 2px;
}

.ax-menu .ax-ext {
  padding: 0.38rem 0.75rem;
  border: 1px solid var(--ax-line);
  background: var(--ax-paper);
  color: var(--ax-muted);
}

.ax-menu .ax-ext:hover {
  border-color: var(--ax-tech);
  color: var(--ax-tech);
  box-shadow: 0 0 0 2px var(--ax-tech-dim);
}

.ax-wrap {
  max-width: var(--ax-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 3vw, 2rem);
}

/* hero */
.ax-hero {
  position: relative;
  z-index: 1;
  padding: 2rem 0 0;
  border-bottom: 1px solid var(--ax-line);
  background:
    linear-gradient(180deg, var(--ax-paper) 0%, rgba(255, 255, 255, 0.55) 55%, transparent 100%);
  overflow: hidden;
}

.ax-hero__corners::before,
.ax-hero__corners::after {
  content: "";
  position: absolute;
  width: 48px;
  height: 48px;
  border: 2px solid rgba(61, 79, 99, 0.22);
  pointer-events: none;
  z-index: 2;
}

.ax-hero__corners::before {
  top: 1.5rem;
  left: clamp(1rem, 2.5vw, 1.5rem);
  border-width: 2px 0 0 2px;
}

.ax-hero__corners::after {
  top: 1.5rem;
  right: clamp(1rem, 2.5vw, 1.5rem);
  border-width: 2px 2px 0 0;
}

.ax-hero__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px dashed var(--ax-line-soft);
  margin-bottom: 2rem;
}

.ax-hero__eyebrow {
  margin: 0;
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ax-tech);
}

.ax-hero__coord {
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ax-faint);
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--ax-line-soft);
  background: rgba(255, 255, 255, 0.65);
}

.ax-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(13rem, 0.8fr) minmax(12rem, 0.7fr);
  gap: 1.75rem 2rem;
  align-items: stretch;
  padding-bottom: 1.75rem;
}

.ax-hero__main {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.ax-hero__main h1 {
  margin: 0;
  font-size: clamp(2.75rem, 7vw, 4.25rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.ax-hero__main h1 em {
  font-style: normal;
  color: var(--ax-muted);
  font-weight: 500;
}

.ax-hero__main p {
  margin: 1.25rem 0 0;
  max-width: 44ch;
  color: var(--ax-muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.ax-chips {
  list-style: none;
  margin: 1.35rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.ax-chips li {
  padding: 0.28rem 0.55rem;
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ax-muted);
  background: var(--ax-paper);
  border: 1px solid var(--ax-line);
  transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.ax-chips li:hover {
  border-color: var(--ax-tech);
  color: var(--ax-tech);
  border-color: var(--ax-tech);
}

.ax-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.65rem;
}

.ax-btn {
  display: inline-flex;
  align-items: center;
  min-height: 2.4rem;
  padding: 0 1.15rem;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: transform 0.15s, box-shadow 0.25s, background 0.25s, border-color 0.25s;
}

.ax-btn:active { transform: scale(0.98); }

.ax-btn--hot {
  background: var(--ax-tech);
  border-color: var(--ax-tech);
  color: #f3f4f6;
  box-shadow: 0 2px 8px rgba(20, 24, 32, 0.12);
}

.ax-btn--hot:hover {
  background: var(--ax-accent-hot);
  box-shadow: 0 4px 14px rgba(20, 24, 32, 0.16);
}

.ax-btn--line {
  background: var(--ax-paper);
  border-color: var(--ax-line);
  color: var(--ax-muted);
}

.ax-btn--line:hover {
  border-color: var(--ax-tech);
  color: var(--ax-tech);
  box-shadow: 0 0 0 2px var(--ax-tech-dim);
}

.ax-btn--ghost {
  background: transparent;
  border-color: transparent;
  color: var(--ax-faint);
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}

.ax-btn--ghost:hover { color: var(--ax-tech); }

/* spec panel */
.ax-spec {
  padding: 0;
  background: var(--ax-paper);
  border: 1px solid var(--ax-line);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.8) inset,
    0 12px 32px rgba(11, 18, 32, 0.06);
  position: relative;
  display: flex;
  flex-direction: column;
}

.ax-spec::before,
.ax-spec::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--ax-tech);
  border-style: solid;
  opacity: 0.75;
  z-index: 1;
}

.ax-spec::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
}

.ax-spec::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
}

.ax-spec__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--ax-line-soft);
  background: linear-gradient(180deg, var(--ax-tech-dim), var(--ax-paper));
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.ax-spec__id { color: var(--ax-tech); font-weight: 600; }
.ax-spec__state {
  color: var(--ax-faint);
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--ax-line-soft);
}

.ax-spec__list {
  margin: 0;
  padding: 1rem 1.1rem 1.15rem;
  display: grid;
  gap: 0.9rem;
  flex: 1;
}

.ax-spec__row {
  display: grid;
  gap: 0.25rem;
}

.ax-spec__row dt {
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ax-tech);
}

.ax-spec__row dd {
  margin: 0;
  font-size: 0.6875rem;
  color: var(--ax-muted);
  line-height: 1.55;
}

.ax-spec__meter {
  display: grid;
  gap: 0.4rem;
}

.ax-spec__meter .ax-meter { border-radius: 1px; }

/* viz / scope */
.ax-viz__frame {
  position: relative;
  height: 100%;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  padding: 0;
  background: var(--ax-paper);
  border: 1px solid var(--ax-line);
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(11, 18, 32, 0.06);
}

.ax-viz__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(61, 79, 99, 0.03) 2px,
    rgba(61, 79, 99, 0.03) 4px
  );
  pointer-events: none;
  z-index: 3;
  opacity: 0.5;
}

.ax-viz__hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.55rem 0.75rem;
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ax-faint);
  border-bottom: 1px solid var(--ax-line-soft);
  background: var(--ax-ink);
  color: #94a3b8;
  z-index: 2;
}

.ax-viz__hz {
  color: #b8c0cc;
  font-weight: 600;
}

.ax-viz__scope {
  width: 100%;
  flex: 1;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

.ax-viz__readout {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  font-size: 0.5625rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ax-faint);
  border-top: 1px solid var(--ax-line-soft);
  background: linear-gradient(180deg, var(--ax-paper), var(--ax-tech-dim));
  z-index: 2;
}

.ax-viz__readout strong {
  color: var(--ax-tech);
  font-weight: 600;
}

/* telemetry */
.ax-telem {
  list-style: none;
  margin: 0;
  padding: 0 0 1rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--ax-line);
}

.ax-telem li {
  display: grid;
  gap: 0.3rem;
  padding: 1rem 1.25rem 1rem 0;
  border-right: 1px solid var(--ax-line-soft);
}

.ax-telem li:last-child { border-right: none; }

.ax-telem__k {
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ax-faint);
}

.ax-telem__v {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ax-ink);
  font-variant-numeric: tabular-nums;
}

.ax-telem__bar {
  margin-top: 0.25rem;
  max-width: 8rem;
}

/* ticker */
.ax-ticker {
  overflow: hidden;
  border-top: 1px dashed var(--ax-line-soft);
  padding: 0.65rem 0 1.1rem;
  mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
}

.ax-ticker__track {
  display: flex;
  width: max-content;
  gap: 3rem;
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ax-faint);
  white-space: nowrap;
}

.ax-ticker__track span { flex-shrink: 0; }

/* panels */
.ax-panel {
  position: relative;
  z-index: 1;
  padding: clamp(2.75rem, 5vw, 4rem) 0;
}

.ax-panel--alt {
  background:
    linear-gradient(180deg, var(--ax-bg-deep) 0%, rgba(220, 228, 238, 0.5) 100%);
  border-top: 1px solid var(--ax-line);
  border-bottom: 1px solid var(--ax-line-soft);
}

.ax-panel__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.ax-panel__title {
  margin: 0;
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.ax-panel__sub {
  margin: 0.45rem 0 0;
  font-size: 0.75rem;
  color: var(--ax-faint);
  max-width: 50ch;
  line-height: 1.7;
}

.ax-panel__link {
  flex-shrink: 0;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--ax-tech);
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--ax-line);
  background: var(--ax-paper);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.ax-panel__link:hover {
  background: var(--ax-tech);
  color: #f3f4f6;
  border-color: var(--ax-tech);
}

.ax-panel__badge {
  flex-shrink: 0;
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ax-faint);
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--ax-line);
  background: var(--ax-paper);
}

/* signal stack */
.ax-stack__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.ax-mod {
  position: relative;
  padding: 1.15rem 1.2rem 1.1rem;
  background: var(--ax-paper);
  border: 1px solid var(--ax-line);
  transition: transform 0.25s var(--ax-ease), box-shadow 0.25s, border-color 0.25s;
  overflow: hidden;
}

.ax-mod::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--ax-tech), transparent);
  opacity: 0.6;
}

.ax-mod:hover {
  transform: translateY(-3px);
  border-color: rgba(61, 79, 99, 0.5);
  box-shadow: 0 12px 28px rgba(20, 24, 32, 0.08);
}

.ax-mod--accent {
  background: linear-gradient(145deg, var(--ax-tech-dim), var(--ax-paper));
  border-color: rgba(61, 79, 99, 0.35);
}

.ax-mod--accent::before {
  background: var(--ax-tech);
  opacity: 1;
}

.ax-mod__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.65rem;
}

.ax-mod__n {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--ax-tech);
  letter-spacing: 0.08em;
}

.ax-mod__tag {
  font-size: 0.5625rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ax-faint);
}

.ax-mod__t {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.45;
}

.ax-mod__x {
  margin: 0.5rem 0 0.85rem;
  font-size: 0.6875rem;
  color: var(--ax-muted);
  line-height: 1.65;
}

.ax-mod__meter {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.5625rem;
  color: var(--ax-faint);
}

.ax-mod__meter i { border-radius: 1px; }

/* lab grid */
.ax-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.ax-cell {
  position: relative;
  background: var(--ax-paper);
  border: 1px solid var(--ax-line);
  transition: transform 0.25s var(--ax-ease), box-shadow 0.25s, border-color 0.25s;
}

.ax-cell::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ax-tech-bright), var(--ax-tech));
  opacity: 0;
  transition: opacity 0.25s;
}

.ax-cell:hover,
.ax-cell:focus-within {
  transform: translateY(-3px);
  border-color: rgba(61, 79, 99, 0.5);
  box-shadow: 0 12px 28px rgba(20, 24, 32, 0.08);
}

.ax-cell:hover::before,
.ax-cell:focus-within::before { opacity: 1; }

.ax-cell__in {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto 1fr auto;
  gap: 0.4rem 0.65rem;
  padding: 1.2rem 1.25rem;
  min-height: 11rem;
}

.ax-cell__idx {
  grid-row: 1 / 3;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1;
  color: var(--ax-line);
  align-self: start;
  padding-top: 0.1rem;
}

.ax-cell:hover .ax-cell__idx { color: var(--ax-tech); }

.ax-cell__tag {
  justify-self: start;
  padding: 0.2rem 0.5rem;
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ax-tech);
  background: var(--ax-tech-dim);
  border: 1px solid rgba(61, 79, 99, 0.25);
}

.ax-cell__date {
  grid-column: 2;
  font-size: 0.625rem;
  color: var(--ax-faint);
}

.ax-cell__title {
  grid-column: 2 / -1;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.55;
}

.ax-cell__sig {
  grid-column: 2 / -1;
  max-width: 10rem;
}

.ax-cell__go {
  grid-column: 3;
  grid-row: 1;
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--ax-faint);
  transition: color 0.2s, transform 0.2s;
}

.ax-cell:hover .ax-cell__go,
.ax-cell:focus-within .ax-cell__go {
  color: var(--ax-tech);
  transform: translateX(2px);
}

/* writing layout */
.ax-write__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
  gap: 1.25rem;
  align-items: stretch;
}

.ax-feature {
  display: flex;
  flex-direction: column;
  padding: 0;
  background: var(--ax-paper);
  border: 1px solid var(--ax-line);
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s var(--ax-ease);
}

.ax-feature::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--ax-tech);
  z-index: 1;
}

.ax-feature:hover {
  border-color: rgba(61, 79, 99, 0.45);
  box-shadow: 0 16px 40px rgba(11, 18, 32, 0.08);
  transform: translateY(-2px);
}

.ax-feature__ribbon {
  display: flex;
  gap: 0.65rem;
  padding: 0.55rem 1.25rem 0.55rem 1.5rem;
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ax-faint);
  border-bottom: 1px solid var(--ax-line-soft);
  background: linear-gradient(90deg, var(--ax-tech-dim), var(--ax-paper));
}

.ax-feature__ribbon span:first-child {
  color: var(--ax-tech);
  font-weight: 600;
}

.ax-feature__d {
  display: block;
  margin: 1.15rem 1.5rem 0;
  font-size: 0.625rem;
  color: var(--ax-tech);
}

.ax-feature__t {
  margin: 0.65rem 1.5rem 0;
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.03em;
  transition: color 0.2s;
}

.ax-feature:hover .ax-feature__t { color: var(--ax-tech); }

.ax-feature__x {
  display: block;
  margin: 1rem 1.5rem 0;
  font-size: 0.8125rem;
  color: var(--ax-muted);
  line-height: 1.75;
  flex: 1;
}

.ax-feature__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.35rem;
  padding: 1rem 1.5rem 1.25rem;
  border-top: 1px dashed var(--ax-line-soft);
}

.ax-feature__go {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--ax-tech);
}

.ax-feature__hash {
  font-size: 0.5625rem;
  color: var(--ax-faint);
  letter-spacing: 0.06em;
}

.ax-index-wrap {
  display: flex;
  flex-direction: column;
  background: var(--ax-paper);
  border: 1px solid var(--ax-line);
}

.ax-index__head {
  display: flex;
  justify-content: space-between;
  padding: 0.65rem 1.1rem;
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ax-faint);
  border-bottom: 1px solid var(--ax-line-soft);
  background: var(--ax-bg-deep);
}

.ax-index {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
}

.ax-index li + li { border-top: 1px solid var(--ax-line-soft); }

.ax-index a {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 1rem 1.1rem;
  transition: background 0.2s;
  min-height: 5.5rem;
}

.ax-index a:hover { background: var(--ax-tech-dim); }
.ax-index a:hover .ax-index__t { color: var(--ax-tech); }
.ax-index a:hover .ax-index__arrow { color: var(--ax-tech); transform: translateX(3px); }

.ax-index__n {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ax-line);
  min-width: 1.5rem;
}

.ax-index a:hover .ax-index__n { color: var(--ax-tech); }

.ax-index__body {
  display: grid;
  gap: 0.3rem;
}

.ax-index__d {
  font-size: 0.625rem;
  color: var(--ax-faint);
}

.ax-index__t {
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.5;
  transition: color 0.2s;
}

.ax-index__arrow {
  font-size: 0.75rem;
  color: var(--ax-faint);
  transition: color 0.2s, transform 0.2s;
}

/* footer */
.ax-foot {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--ax-line);
  background: var(--ax-paper);
  padding: 1.5rem 0 2.25rem;
}

.ax-foot__in {
  max-width: var(--ax-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 3vw, 2rem);
}

.ax-foot__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 1.5rem;
  font-size: 0.625rem;
  color: var(--ax-faint);
}

.ax-foot__label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ax-line);
}

.ax-foot__endpoints {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
}

.ax-foot__endpoints a {
  text-decoration: none;
  color: inherit;
}

.ax-foot__endpoints span {
  color: var(--ax-muted);
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.ax-foot__endpoints a:hover span {
  color: var(--ax-tech);
  border-bottom-color: var(--ax-tech);
}

.ax-foot__col--end { text-align: right; }

/* read page */
.ax-doc-wrap {
  position: relative;
  z-index: 1;
  max-width: var(--ax-max);
  margin: 0 auto;
  padding: 2rem clamp(1.25rem, 3vw, 2rem) 4rem;
  display: grid;
  grid-template-columns: 12.5rem minmax(0, 1fr);
  gap: 2.5rem 3rem;
}

.ax-doc-side {
  position: sticky;
  top: calc(var(--ax-header) + var(--ax-rail) + 1rem);
  align-self: start;
}

.ax-doc-rail {
  padding: 0;
  background: var(--ax-paper);
  border: 1px solid var(--ax-line);
  margin-top: 2rem;
  overflow: hidden;
}

.ax-doc-rail__head {
  padding: 0.6rem 1rem;
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ax-faint);
  border-bottom: 1px solid var(--ax-line-soft);
  background: var(--ax-bg-deep);
}

.ax-doc-rail h2 {
  margin: 0;
  padding: 0.75rem 1rem 0.5rem;
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ax-tech);
}

.ax-doc-rail nav {
  display: grid;
  gap: 0;
  padding: 0 0 0.75rem;
}

.ax-doc-rail a {
  font-size: 0.625rem;
  color: var(--ax-faint);
  padding: 0.4rem 1rem;
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.ax-doc-rail a:hover,
.ax-doc-rail a.is-on {
  color: var(--ax-tech);
  border-left-color: var(--ax-tech);
  background: var(--ax-tech-dim);
}

.ax-doc-meta-panel {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  background: var(--ax-paper);
  border: 1px solid var(--ax-line);
  font-size: 0.5625rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ax-faint);
}

.ax-doc-meta-panel dl {
  margin: 0.65rem 0 0;
  display: grid;
  gap: 0.5rem;
}

.ax-doc-meta-panel dt { color: var(--ax-tech); }
.ax-doc-meta-panel dd { margin: 0; color: var(--ax-muted); text-transform: none; letter-spacing: 0; }

.ax-doc {
  max-width: 42rem;
}

.ax-doc__back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 1.75rem;
  font-size: 0.625rem;
  color: var(--ax-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--ax-line-soft);
  background: var(--ax-paper);
  transition: border-color 0.2s, color 0.2s;
}

.ax-doc__back:hover {
  color: var(--ax-tech);
  border-color: var(--ax-tech);
}

.ax-doc__header {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--ax-line);
  position: relative;
}

.ax-doc__header::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 4rem;
  height: 2px;
  background: var(--ax-tech);
}

.ax-doc__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.85rem;
  margin-bottom: 1rem;
  font-size: 0.625rem;
  color: var(--ax-faint);
}

.ax-doc__meta span:first-child {
  padding: 0.2rem 0.45rem;
  color: var(--ax-tech);
  background: var(--ax-tech-dim);
  border: 1px solid rgba(61, 79, 99, 0.25);
  font-weight: 600;
}

.ax-doc h1 {
  margin: 0;
  font-size: clamp(1.85rem, 4.2vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.18;
}

.ax-doc__sub {
  margin: 1.15rem 0 0;
  font-size: 0.9375rem;
  color: var(--ax-muted);
  line-height: 1.85;
}

.ax-body {
  padding-top: 2rem;
  font-size: 0.9375rem;
  line-height: 1.95;
}

.ax-body p { margin: 0 0 1.5rem; }

.ax-body h2 {
  margin: 2.5rem 0 0.85rem;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.35rem 0 0.35rem 0.85rem;
  border-left: 3px solid var(--ax-tech);
  background: linear-gradient(90deg, var(--ax-tech-dim), transparent);
}

.ax-body h2:first-of-type { margin-top: 0; }

.ax-body blockquote {
  margin: 1.5rem 0;
  padding: 1.1rem 1.15rem;
  background: var(--ax-tech-dim);
  border: 1px solid rgba(61, 79, 99, 0.22);
  border-left: 3px solid var(--ax-tech);
  color: var(--ax-muted);
  font-size: 0.875rem;
  position: relative;
}

.ax-body blockquote::before {
  content: "NOTE";
  position: absolute;
  top: -0.5rem;
  left: 0.85rem;
  font-size: 0.5rem;
  letter-spacing: 0.12em;
  padding: 0.1rem 0.35rem;
  background: var(--ax-paper);
  color: var(--ax-tech);
  border: 1px solid rgba(61, 79, 99, 0.25);
}

.ax-body pre {
  margin: 1.5rem 0;
  padding: 1.75rem 1.15rem 1.1rem;
  background: var(--ax-ink);
  color: #e2e8f0;
  border: 1px solid #1e293b;
  font-size: 0.75rem;
  line-height: 1.65;
  overflow-x: auto;
  box-shadow: 0 12px 32px rgba(11, 18, 32, 0.18);
  position: relative;
  white-space: pre-wrap;
  word-break: break-word;
}

.ax-body pre::before {
  content: "snippet";
  position: absolute;
  top: 0;
  right: 0;
  padding: 0.25rem 0.5rem;
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #64748b;
  background: #1e293b;
  pointer-events: none;
}

.ax-body pre code,
.ax-body pre code * {
  display: block;
  color: #e2e8f0 !important;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  font-size: inherit !important;
  line-height: inherit !important;
  white-space: pre-wrap;
  word-break: break-word;
}

.ax-body :not(pre) > code {
  font-size: 0.85em;
  color: var(--ax-ink);
  background: var(--ax-bg-deep);
  padding: 0.12em 0.38em;
  border: 1px solid var(--ax-line);
}

/* motion */
@media (prefers-reduced-motion: no-preference) {
  .ax-led__dot {
    animation: ax-pulse-led 2.4s ease-in-out infinite;
  }

  .ax-ticker__track {
    animation: ax-ticker 28s linear infinite;
  }

  .ax-viz__scope {
    animation: ax-scope-drift 6s var(--ax-ease) infinite alternate;
  }

  .ax-scope__sweep {
    animation: ax-sweep 4s linear infinite;
  }
}

@keyframes ax-pulse-led {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}

@keyframes ax-ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes ax-scope-drift {
  from { opacity: 1; filter: brightness(1); }
  to { opacity: 0.88; filter: brightness(1.05); }
}

@keyframes ax-sweep {
  from { transform: translateX(0); }
  to { transform: translateX(264px); }
}

@media (max-width: 1024px) {
  .ax-stack__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ax-hero__grid { grid-template-columns: 1fr 1fr; }
  .ax-viz { grid-column: 1 / -1; }
}

@media (max-width: 960px) {
  .ax-telem { grid-template-columns: repeat(2, 1fr); }
  .ax-telem li:nth-child(2) { border-right: none; }
  .ax-telem li { border-bottom: 1px solid var(--ax-line-soft); }
  .ax-write__layout { grid-template-columns: 1fr; }
  .ax-doc-wrap { grid-template-columns: 1fr; }
  .ax-doc-side { position: static; }
  .ax-doc-rail { margin-top: 0; }
  .ax-foot__grid { grid-template-columns: 1fr 1fr; }
  .ax-foot__col--end { text-align: left; grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .ax-hero__grid { grid-template-columns: 1fr; }
  .ax-stack__grid { grid-template-columns: 1fr; }
  .ax-grid { grid-template-columns: 1fr; }
  .ax-telem { grid-template-columns: 1fr; }
  .ax-telem li { border-right: none; }
  .ax-menu a:not(.ax-ext) { display: none; }
  .ax-actions { flex-direction: column; align-items: stretch; }
  .ax-head__meta:not(#ax-utc) { display: none; }
  .ax-foot__grid { grid-template-columns: 1fr; }
}

/* Ghost content */
.ax-body.gh-content img,
.ax-body.gh-content figure {
  max-width: 100%;
  margin: 1.5rem 0;
}

.ax-body.gh-content figure img { margin: 0; }

.ax-body.gh-content figcaption {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--ax-faint);
}

.ax-body.gh-content a:not([class]) {
  color: var(--ax-tech);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.ax-body.gh-content ul,
.ax-body.gh-content ol {
  margin: 0 0 1.5rem;
  padding-left: 1.25rem;
}

.ax-body.gh-content li { margin-bottom: 0.35rem; }

.ax-body.gh-content hr {
  margin: 2rem 0;
  border: none;
  border-top: 1px solid var(--ax-line);
}

.ax-body.gh-content table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.ax-body.gh-content th,
.ax-body.gh-content td {
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--ax-line);
  text-align: left;
}

.ax-body.gh-content th {
  background: var(--ax-bg-deep);
  font-weight: 600;
}

.ax-toc__empty {
  margin: 0;
  padding: 0.25rem 1rem 0.75rem;
  font-size: 0.625rem;
  color: var(--ax-faint);
}

.ax-doc-rail nav a.is-active {
  color: var(--ax-tech);
  border-left-color: var(--ax-tech);
  background: var(--ax-tech-dim);
}

/* archive + pagination */
.ax-archive {
  position: relative;
  z-index: 1;
}

.ax-pagination {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
  font-size: 0.6875rem;
}

.ax-pagination a {
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--ax-line);
  background: var(--ax-paper);
  color: var(--ax-muted);
  transition: border-color 0.2s, color 0.2s;
}

.ax-pagination a:hover {
  border-color: var(--ax-tech);
  color: var(--ax-tech);
}

.ax-page {
  position: relative;
  z-index: 1;
  max-width: var(--ax-max);
  margin: 0 auto;
  padding: 2.5rem clamp(1.25rem, 3vw, 2rem) 4rem;
}

.ax-page__header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--ax-line);
}

.ax-page__header h1 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.ax-page__content.gh-content {
  font-size: 0.9375rem;
  line-height: 1.9;
  max-width: 42rem;
}

/* portal suppression */
#gh-portal-root,
.gh-portal-triggerbtn-container,
iframe.gh-portal-triggerbtn-iframe,
.gh-portal-triggerbtn,
.gh-post-upgrade-cta {
  display: none !important;
}