@charset "UTF-8";
:root {
  color-scheme: dark;
  --c-bg: #0a111e;          
  --c-bg-raise: #0e1727;    
  --c-bg-sink: #070c16;     
  --c-panel: #121d31;       
  --c-panel-hi: #17253d;    
  --c-scope: rgba(5, 9, 17, .62);         
  --c-header: rgba(10, 17, 30, .9);       
  --c-line: #223149;
  --c-line-hi: #3a5075;
  --c-line-ui: #5f7aa3;
  --c-grid: rgba(143, 160, 185, .11);     
  --c-dot: rgba(143, 160, 185, .16);      
  --c-text: #e9eef6;
  --c-text-sub: #bcc7d8;
  --c-text-mute: #95a5bd;
  --c-blue: #1479d6;        
  --c-blue-deep: #0b3f8f;   
  --c-blue-hi: #6cb4ff;     
  --c-glow: rgba(20, 121, 214, .2);       
  --c-glow-soft: rgba(20, 121, 214, .07); 
  --c-blue-wash: rgba(108, 180, 255, .1); 
  --c-select: #1565c8;      
  --c-on-select: #fff;
  --c-signal: #ffb224;
  --c-signal-hi: #ffc452;   
  --c-signal-ink: #1b1200;  
  --c-signal-wash: rgba(255, 178, 36, .3);   
  --c-signal-dash: rgba(255, 178, 36, .65);
  --c-shadow: rgba(0, 0, 0, .5);
  --ff-ja: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo, "Noto Sans JP", "Noto Sans CJK JP", sans-serif;
  --ff-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, "DejaVu Sans Mono", "Hiragino Sans", "Yu Gothic UI", Meiryo, "Noto Sans JP", "Noto Sans CJK JP", monospace;
  --fs-xs: .75rem;     
  --fs-sm: .875rem;    
  --fs-base: 1rem;     
  --fs-md: 1.125rem;   
  --fs-lg: clamp(1.1875rem, 1.05rem + .6vw, 1.5rem);    
  --fs-xl: clamp(1.5rem, 1.15rem + 1.5vw, 2.25rem);     
  --lh-body: 1.9;
  --lh-head: 1.55;
  --ls-body: .04em;
  --ls-head: .06em;
  --ls-label: .14em;
  --section-y: clamp(4.5rem, 3rem + 6.5vw, 8.5rem);
  --gutter: clamp(1rem, 5vw, 2.5rem);
  --container: 75rem;
  --measure: 38em;
  --radius: 3px;
  --stroke: 1.5px;
  --header-h: 4.5rem;
  --tap: 2.75rem;      
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/ibm-plex-mono-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/ibm-plex-mono-500.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/ibm-plex-mono-600.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
*,
*::before,
*::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 1rem);
  background: var(--c-bg-sink); 
}
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--ff-ja);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  letter-spacing: var(--ls-body);
  line-break: strict;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
main { flex: 1 0 auto; }
main:focus { outline: 0; } 
img,
svg { max-width: 100%; height: auto; vertical-align: middle; }
img { border: 0; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure, table, blockquote, fieldset { margin: 0; }
button, input, select, textarea { font: inherit; letter-spacing: inherit; color: inherit; } 
ul, ol { padding: 0; }
address { font-style: normal; }
code, kbd, samp, pre { font-family: var(--ff-mono); font-size: 1em; }
a { color: var(--c-blue-hi); text-underline-offset: .25em; text-decoration-thickness: 1px; }
a:hover { color: var(--c-text); }
:focus-visible {
  outline: 2px solid var(--c-signal);
  outline-offset: 3px;
  border-radius: 2px;
}
::selection { background: var(--c-select); color: var(--c-on-select); }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip-link {
  position: absolute;
  left: var(--gutter);
  top: .75rem;
  transform: translateY(calc(-100% - 1.5rem));
  z-index: 100;
  padding: .75rem 1.25rem;
  background: var(--c-signal);
  color: var(--c-signal-ink);
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { transform: none; color: var(--c-signal-ink); }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon {
  width: 1.125rem;
  height: 1.125rem;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: square;
  stroke-linejoin: miter;
}
.container {
  width: min(100% - (var(--gutter) * 2), var(--container));
  margin-inline: auto;
}
.section {
  position: relative;
  padding-block: var(--section-y);
}
.section--band {
  border-block: 1px solid var(--c-line);
  background:
    radial-gradient(52rem 26rem at 0% 0%, var(--c-glow-soft), transparent 70%),
    linear-gradient(180deg, var(--c-bg-raise), var(--c-bg));
}
.section--flush { padding-top: 0; }
.split {
  display: grid;
  gap: clamp(2rem, 5vw, 5rem);
}
.h-display + .prose { margin-top: clamp(1.5rem, 3vw, 2.25rem); } 
.split > .h-display + .prose { margin-top: 0; } 
@media (min-width: 64em) {
  .split { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); align-items: start; }
  .split--even { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}
.nb { display: inline-block; }
.h-display {
  font-size: var(--fs-xl);
  font-weight: 600;
  line-height: var(--lh-head);
  letter-spacing: var(--ls-head);
  font-feature-settings: "palt";
  word-break: auto-phrase;
  text-wrap: balance;
}
.lead {
  max-width: var(--measure);
  font-size: var(--fs-md);
  line-height: 2;
  color: var(--c-text);
  word-break: auto-phrase;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  min-height: 3.25rem;
  padding: .5rem 1.25rem;
  border: 1px solid var(--c-line-hi);
  border-radius: var(--radius);
  background: var(--c-blue-wash);
  color: var(--c-text);
  font: inherit;
  font-size: .9375rem;
  font-weight: 600;
  letter-spacing: .08em;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .2s, border-color .2s, color .2s;
}
.btn__label { display: inline-flex; align-items: center; gap: .625rem; } 
.btn .icon { transition: transform .2s; }
.btn:hover { border-color: var(--c-blue-hi); color: var(--c-text); }
.btn:hover .icon:last-child { transform: translateX(3px); }
.btn--primary {
  border-color: var(--c-signal);
  background: var(--c-signal);
  color: var(--c-signal-ink);
}
.btn--primary:hover { border-color: var(--c-signal-hi); background: var(--c-signal-hi); color: var(--c-signal-ink); }
.btn--lg { min-height: 4rem; padding-inline: 1rem; font-size: 1rem; letter-spacing: .04em; }
.btn:disabled,
.btn[aria-disabled="true"] { opacity: .5; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; gap: .875rem; }
.btn-row .btn { flex: 1 1 100%; }
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: .625rem;
  min-height: var(--tap);
  border-bottom: 1px solid var(--c-line-hi);
  color: var(--c-text);
  font-size: .9375rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-decoration: none;
  transition: border-color .2s, color .2s;
}
.link-arrow .icon { color: var(--c-signal); transition: transform .2s; }
.link-arrow:hover { border-color: var(--c-signal); color: var(--c-text); }
.link-arrow:hover .icon { transform: translateX(3px); }
.tags { display: flex; flex-wrap: wrap; gap: .5rem; list-style: none; }
.tags li {
  padding: .25rem .75rem;
  border: 1px solid var(--c-line-hi);
  border-radius: var(--radius);
  background: var(--c-blue-wash);
  font-size: var(--fs-sm);
  line-height: 1.7;
  letter-spacing: .06em;
  color: var(--c-text-sub);
}
.slot {
  display: flex;
  align-items: center;
  gap: .875rem;
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  line-height: 1;
  letter-spacing: var(--ls-label);
  color: var(--c-text-mute);
}
.slot__no { flex: none; color: var(--c-signal); font-weight: 500; letter-spacing: .06em; white-space: nowrap; }
.slot__en { color: var(--c-text-sub); white-space: nowrap; }
.slot--line::after {
  content: "";
  order: 2;
  flex: 1;
  min-width: 1rem;
  border-top: 1px solid var(--c-line);
}
.pulse {
  order: 3;
  flex: 0 1 6.875rem; 
  min-width: 0;
  height: .875rem;
  overflow: visible;
}
.pulse path { fill: none; stroke: var(--c-line-hi); stroke-width: 1.5; }
.pulse .pulse__on { stroke: var(--c-signal); }
.sec-head { margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.sec-head__title { margin-top: 1.75rem; }
.sec-head__lead { margin-top: 1.25rem; max-width: var(--measure); color: var(--c-text-sub); word-break: auto-phrase; }
.facts { display: grid; border-top: 1px solid var(--c-line); }
.facts > div {
  display: grid;
  grid-template-columns: 4.75rem minmax(0, 1fr);
  align-items: baseline;
  column-gap: 1rem;
  padding-block: .75rem;
}
.facts > div + div { border-top: 1px solid var(--c-line); }
.facts dt {
  font-size: .8125rem;
  line-height: 1.6;
  letter-spacing: .12em;
  color: var(--c-text-mute);
  white-space: nowrap;
}
.facts dd {
  font-size: .9375rem;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: .06em;
  word-break: keep-all;
}
.facts--boxed { margin-top: clamp(2.5rem, 5vw, 4rem); border-bottom: 1px solid var(--c-line); }
.ladder {
  position: relative;
  border-inline: 2px solid var(--c-blue);
}
.rung { --wire: var(--c-line-hi); --sym: var(--c-blue-hi); position: relative; }
.rung:hover,
.rung:focus-within { --wire: var(--c-signal); --sym: var(--c-signal); }
.rung__wire {
  display: grid;
  grid-template-columns: auto minmax(1rem, 1fr) auto;
  align-items: center;
}
.rung__dev {
  display: grid;
  grid-template-rows: 1.375rem 1.75rem 1.375rem;
  justify-items: center;
  align-items: center;
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: .08em;
  line-height: 1;
  color: var(--c-text-mute);
}
.rung__dev--in { justify-items: start; }
.rung__dev--out { justify-items: end; }
.rung__addr { padding-inline: .875rem; color: var(--c-text-sub); }
.rung__cmt { padding-inline: .75rem; font-family: var(--ff-ja); letter-spacing: .1em; white-space: nowrap; }
.rung__sym {
  display: block;
  width: 3.5rem; height: 1.75rem;
  fill: none;
  stroke: var(--sym);
  stroke-width: 1.5;
  transition: stroke .2s;
}
.rung__line { border-top: var(--stroke) solid var(--wire, var(--c-line-hi)); transition: border-color .2s; }
.rung__body {
  display: grid;
  gap: 1rem 3rem;
  padding: .5rem clamp(1.125rem, 5vw, 4rem) clamp(2.25rem, 4.5vw, 3.5rem);
}
.rung__title {
  font-size: clamp(1.125rem, 5.6vw, var(--fs-lg));
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: var(--ls-head);
  font-feature-settings: "palt";
}
.rung__en {
  display: block;
  margin-bottom: .5rem;
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-weight: 400;
  letter-spacing: var(--ls-label);
  color: var(--c-text-mute);
}
.rung__text { max-width: var(--measure); color: var(--c-text-sub); text-wrap: pretty; }
.rung__text + .tags { margin-top: 1.125rem; }
.rung__more { justify-self: start; }
.ladder__end {
  display: grid;
  grid-template-columns: minmax(1rem, 1fr) auto minmax(1rem, 1fr);
  align-items: center;
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-label);
  line-height: 1;
  color: var(--c-text-mute);
}
.ladder__end span:nth-child(2) { padding: .375rem .875rem; border: var(--stroke) solid var(--c-line-hi); }
.datasheet {
  border: 1px solid var(--c-line-hi);
  border-top: 2px solid var(--c-blue);
  border-radius: var(--radius);
  background: var(--c-panel);
}
.datasheet__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .25rem 1rem;
  padding: .75rem clamp(1rem, 2.5vw, 1.5rem);
  border-bottom: 1px solid var(--c-line);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-label);
  line-height: 1.6;
  color: var(--c-text-mute);
}
.datasheet table { width: 100%; border-collapse: collapse; counter-reset: row; }
.datasheet tr { counter-increment: row; }
.datasheet tr + tr { border-top: 1px solid var(--c-line); }
.datasheet th,
.datasheet td {
  display: block; 
  padding-inline: clamp(1rem, 2.5vw, 1.5rem);
  text-align: left;
  vertical-align: baseline;
  line-height: 1.75;
}
.datasheet th {
  padding-top: .875rem;
  font-size: var(--fs-sm);
  font-weight: 400;
  letter-spacing: .1em;
  color: var(--c-text-sub);
  white-space: nowrap;
}
.datasheet th::before {
  content: counter(row, decimal-leading-zero);
  display: inline-block;
  width: 2.25em;
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: .06em;
  color: var(--c-blue-hi);
}
.datasheet td {
  padding-top: .125rem;
  padding-bottom: .875rem;
  padding-left: calc(clamp(1rem, 2.5vw, 1.5rem) + 1.6875rem); 
  font-weight: 500;
  letter-spacing: .05em;
  word-break: keep-all; 
}
.rf-eq {
  max-width: 30rem;
  margin-top: clamp(1.75rem, 3vw, 2.5rem);
  padding: 1.25rem 1.5rem 1.375rem;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-blue);
  background: linear-gradient(90deg, var(--c-glow-soft), transparent 80%);
}
.rf-eq__formula {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .25rem .75rem;
  font-family: var(--ff-mono);
  font-size: var(--fs-lg);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.4;
}
.rf-eq__formula b { color: var(--c-blue-hi); font-weight: 600; }
.rf-eq__formula i { font-style: normal; color: var(--c-text-mute); }
.rf-eq__text { margin-top: .5rem; line-height: 1.8; color: var(--c-text-sub); word-break: auto-phrase; }
.cta {
  position: relative;
  border: 1px solid var(--c-line-hi);
  border-radius: var(--radius);
  border-top-right-radius: 0; 
  background:
    radial-gradient(44rem 22rem at 100% 0%, var(--c-glow-soft), transparent 70%),
    var(--c-panel);
}
.cta::before {
  content: "";
  position: absolute;
  right: -1px;
  bottom: 100%; 
  width: 44%;
  height: .75rem;
  border: 0 solid var(--c-signal);
  border-width: 2px 0 0 2px;
  border-right: 1px solid var(--c-line-hi);
  border-top-right-radius: var(--radius);
  background:
    radial-gradient(44rem 22rem at 100% 100%, var(--c-glow-soft), transparent 70%),
    var(--c-panel);
}
.cta__inner {
  display: grid;
  gap: clamp(1.75rem, 4vw, 4rem);
  padding: clamp(2rem, 5vw, 4rem) clamp(1.125rem, 5vw, 4rem) clamp(2.25rem, 5vw, 4rem);
}
.cta__title { margin-top: 1.75rem; }
.cta__text { margin-top: 1.25rem; max-width: 30em; color: var(--c-text-sub); word-break: auto-phrase; }
.cta__actions { display: grid; gap: .875rem; }
.cta__actions .btn { justify-content: space-between; }
.cta__note { font-size: var(--fs-sm); line-height: 1.7; color: var(--c-text-sub); }
.plate {
  width: min(100%, 30rem);
  border: 1px solid var(--c-line-hi);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 1px 1px, var(--c-dot) 1px, transparent 1.5px) 0 0 / 1.25rem 1.25rem,
    var(--c-bg-sink);
}
.plate svg { display: block; width: 100%; height: auto; }
.plate__cap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .625rem 1rem;
  border-top: 1px solid var(--c-line);
  background: var(--c-bg-sink);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-label);
  line-height: 1.6;
  color: var(--c-text-mute);
}
.art { fill: none; stroke-width: 1.5; stroke-linecap: square; }
.art .a-line { stroke: var(--c-line-hi); }
.art .a-blue { stroke: var(--c-blue-hi); }
.art .a-bus { stroke: var(--c-blue); stroke-width: 2.5; }
.art .a-sig { stroke: var(--c-signal); }
.art .a-dash { stroke-dasharray: 4 5; }
.art .a-fill { fill: var(--c-panel); }
.art .a-fill-blue { fill: var(--c-blue); fill-opacity: .45; stroke: none; }
.art .a-fill-sig { fill: var(--c-signal); stroke: none; }
.art text {
  fill: var(--c-text-sub);
  stroke: none;
  font-family: var(--ff-mono);
  font-size: clamp(14px, 36.5px - 4.65vw, 22px);
  letter-spacing: .08em;
  dominant-baseline: central;
}
.page-head {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
  background:
    radial-gradient(56rem 26rem at 88% -20%, var(--c-glow), transparent 64%),
    linear-gradient(180deg, var(--c-bg-raise), var(--c-bg));
}
.page-head::before { 
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(circle at 1px 1px, var(--c-dot) 1px, transparent 1.5px);
  background-size: 1.75rem 1.75rem;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent);
  mask-image: linear-gradient(to bottom, #000, transparent);
}
.page-head__inner { padding-block: 1rem clamp(2.75rem, 6vw, 4.5rem); }
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  font-size: var(--fs-sm);
  letter-spacing: .08em;
  color: var(--c-text-sub);
}
.breadcrumb li { display: inline-flex; align-items: center; min-height: var(--tap); }
.breadcrumb li + li::before { content: "/"; margin-inline: .75rem; font-family: var(--ff-mono); color: var(--c-text-mute); }
.breadcrumb a { display: inline-flex; align-items: center; min-width: var(--tap); min-height: var(--tap); color: var(--c-text-sub); text-decoration: none; }
.breadcrumb a:hover { color: var(--c-text); text-decoration: underline; }
.breadcrumb [aria-current] { color: var(--c-text); }
.page-head .slot { margin-top: clamp(1.5rem, 4vw, 3rem); }
.page-head__title {
  margin-top: 1.75rem;
  font-size: clamp(1.625rem, 1rem + 3.2vw, 3.25rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: .08em;
  font-feature-settings: "palt";
  word-break: auto-phrase;
  text-wrap: balance;
}
.page-head__lead { margin-top: 1.5rem; max-width: 36em; font-size: var(--fs-md); line-height: 2; color: var(--c-text-sub); word-break: auto-phrase; }
.prose { max-width: var(--measure); color: var(--c-text-sub); }
.prose > * + * { margin-top: 1.4em; }
.prose p,
.prose li,
.prose dd { text-wrap: pretty; }
.prose strong { color: var(--c-text); font-weight: 600; }
.prose a:not([class]) { color: var(--c-blue-hi); text-decoration: underline; } 
.prose a:not([class]):hover { color: var(--c-text); }
.prose .quote-en { font-family: var(--ff-mono); font-size: .9375em; letter-spacing: 0; color: var(--c-text); }
.prose :where(h2, h3, h4):not([class]) {
  color: var(--c-text);
  font-weight: 600;
  line-height: var(--lh-head);
  letter-spacing: var(--ls-head);
  font-feature-settings: "palt";
  word-break: auto-phrase;
  text-wrap: balance;
}
.prose :where(h2):not([class]) {
  margin-top: 3.5rem;
  padding-left: 1rem;
  border-left: 3px solid var(--c-blue);
  font-size: var(--fs-lg);
}
.prose :where(h3):not([class]) { margin-top: 2.75rem; font-size: var(--fs-md); }
.prose :where(h4):not([class]) { margin-top: 2.25rem; font-size: var(--fs-base); }
.prose > :first-child { margin-top: 0; }
.prose :where(h2, h3, h4):not([class]) + * { margin-top: 1rem; }
.prose :where(ul, ol):not([class]) { list-style: none; }
.prose :where(ul, ol):not([class]) > li { position: relative; padding-left: 1.75em; }
.prose :where(ol):not([class]) > li { padding-left: 2.25em; } 
.prose :where(ul, ol):not([class]) > li + li { margin-top: .5em; }
.prose :where(ul, ol):not([class]) > li > :where(ul, ol) { margin-top: .5em; }
.prose :where(ul):not([class]) > li::before {
  content: "";
  position: absolute;
  left: .25em; top: .95em;
  width: .625em;
  border-top: var(--stroke) solid var(--c-blue-hi);
}
.prose :where(ol):not([class]) { counter-reset: item; }
.prose :where(ol):not([class]) > li { counter-increment: item; }
.prose :where(ol):not([class]) > li::before {
  content: counter(item) ".";
  position: absolute;
  left: 0; top: 0;
  font-family: var(--ff-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
  color: var(--c-blue-hi);
}
.prose :where(dl):not([class]) { border-top: 1px solid var(--c-line); }
.prose :where(dl):not([class]) > dt { padding-top: .75rem; color: var(--c-text); font-weight: 600; }
.prose :where(dl):not([class]) > dd { padding-bottom: .75rem; border-bottom: 1px solid var(--c-line); }
.prose blockquote { padding: .125rem 0 .125rem 1.25rem; border-left: 3px solid var(--c-line-hi); }
.prose blockquote > * + * { margin-top: 1em; }
.prose hr { height: 0; margin-block: 2.5rem; border: 0; border-top: 1px solid var(--c-line); }
.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--c-line-hi);
  border-radius: var(--radius);
  background: var(--c-panel);
}
.table-scroll:focus-visible { outline-offset: 2px; }
.table-scroll table { min-width: 30rem; } 
.prose > table,
.table-scroll table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9375rem;
  line-height: 1.7;
}
.prose > table { border-bottom: 1px solid var(--c-line); }
.prose > table caption,
.table-scroll caption {
  padding: .75rem 1rem;
  text-align: left;
  color: var(--c-text);
  font-weight: 600;
}
.prose > table th,
.prose > table td,
.table-scroll th,
.table-scroll td {
  padding: .75rem 1rem;
  border-top: 1px solid var(--c-line);
  text-align: left;
  vertical-align: top;
}
.prose > table thead th,
.table-scroll thead th { background: var(--c-panel-hi); color: var(--c-text); font-weight: 600; white-space: nowrap; }
.prose > table tbody th,
.table-scroll tbody th { color: var(--c-text); font-weight: 600; }
@media (min-width: 30em) {
  .btn { justify-content: center; padding-inline: 1.5rem; }
  .btn-row .btn { flex: 0 1 auto; }
  .btn--lg { padding-inline: 1.75rem; letter-spacing: .08em; }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts > div { display: block; padding: 1.125rem 1rem 1.25rem 0; }
  .facts > div + div { border-top: 0; }
  .facts > div:nth-child(even) { padding-left: 1.75rem; border-left: 1px solid var(--c-line); }
  .facts dd { margin-top: .25rem; }
  .datasheet th,
  .datasheet td { display: table-cell; padding-block: 1rem; }
  .datasheet th { width: 9.5em; padding-right: 0; }
  .datasheet td { padding-left: clamp(1rem, 2.5vw, 1.5rem); }
  .prose :where(dl):not([class]) { display: grid; grid-template-columns: fit-content(40%) minmax(0, 1fr); }
  .prose :where(dl):not([class]) > dt { padding-block: .75rem; padding-right: 1.5rem; border-bottom: 1px solid var(--c-line); }
  .prose :where(dl):not([class]) > dd { padding-top: .75rem; }
}
@media (min-width: 64em) {
  .rung__body { grid-template-columns: minmax(0, 1fr) auto; align-items: start; }
  .rung__title { grid-column: 1 / -1; }
  .rung__more { margin-top: 1rem; }
  .cta__inner { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); align-items: center; }
  .art text { font-size: 15px; }
}
@media (min-width: 80em) {
  .rung__body { grid-template-columns: minmax(0, 4fr) minmax(0, 6fr) auto; }
  .rung__title { grid-column: auto; }
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--c-line);
  background: var(--c-header);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  backdrop-filter: saturate(140%) blur(12px);
}
.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  column-gap: .5rem;
  min-height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: clamp(.5rem, 2.4vw, .75rem);
  flex: 1 1 0%;
  max-width: max-content;
  min-height: var(--tap);
  color: var(--c-text);
  text-decoration: none;
}
.brand:hover { color: var(--c-text); }
.brand__mark { flex: none; width: auto; max-width: none; height: clamp(1.5rem, 7.6vw, 2rem); max-height: 34px; } 
.brand__name {
  font-size: clamp(.75rem, 3.7vw, .9375rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: .04em;
  font-feature-settings: "palt";
  word-break: keep-all;
  overflow-wrap: normal;
}
.global-nav ul { display: flex; align-items: center; gap: .25rem; list-style: none; }
.global-nav a {
  position: relative;
  display: flex;
  align-items: center;
  gap: .875rem;
  min-height: var(--tap);
  padding: 0 .875rem;
  color: var(--c-text-sub);
  font-size: var(--fs-sm);
  letter-spacing: .08em;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s, background-color .2s;
}
.global-nav a::after { 
  content: "";
  position: absolute;
  left: .875rem; right: .875rem; bottom: .375rem;
  height: var(--stroke);
  background: var(--c-signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease-out;
}
.global-nav a:hover,
.global-nav a[aria-current="page"] { color: var(--c-text); }
.global-nav a:hover::after,
.global-nav a[aria-current="page"]::after { transform: scaleX(1); }
.global-nav__no {
  display: none; 
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: .06em;
  color: var(--c-text-mute);
}
.global-nav .global-nav__cta,
.header-cta {
  border-radius: var(--radius);
  background: var(--c-signal);
  color: var(--c-signal-ink);
  font-weight: 600;
}
.global-nav .global-nav__cta { margin-left: .75rem; padding: 0 1.125rem 0 1.25rem; gap: .625rem; }
.global-nav .global-nav__cta::after { content: none; }
.global-nav .global-nav__cta:hover,
.global-nav .global-nav__cta[aria-current="page"],
.header-cta:hover,
.header-cta[aria-current="page"] { background: var(--c-signal-hi); color: var(--c-signal-ink); }
.global-nav .global-nav__cta[aria-current="page"],
.header-cta[aria-current="page"] { box-shadow: inset 0 -3px 0 var(--c-signal-ink); }
.global-nav .global-nav__cta .global-nav__no { color: inherit; }
.header-cta {
  display: none;
  align-items: center;
  min-height: var(--tap);
  margin: 0 .25rem 0 auto;
  padding: 0 1.125rem;
  font-size: var(--fs-sm);
  letter-spacing: .08em;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .2s;
}
.global-nav .global-nav__cta .icon { width: 1rem; height: 1rem; transition: transform .2s; }
.global-nav .global-nav__cta:hover .icon { transform: translateX(3px); }
.nav-toggle {
  display: none;
  align-items: center;
  gap: .5rem;
  min-width: var(--tap);
  min-height: var(--tap);
  margin: 0 -.5rem 0 auto; 
  padding: 0 .5rem;
  border: 0;
  background: none;
  color: var(--c-text);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: .1em;
  cursor: pointer;
}
.nav-toggle__bars {
  position: relative;
  width: 1.5rem; height: 1rem;
  border-block: var(--stroke) solid currentColor;
  transition: border-color .2s;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: var(--stroke);
  margin-top: calc(var(--stroke) / -2);
  background: currentColor;
  transition: transform .2s;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { border-color: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: rotate(-45deg); }
@media (max-width: 63.9375em) {
  html:not(.js) .site-header { position: static; }
  html:not(.js) .site-header__inner { padding-top: .75rem; row-gap: .75rem; }
  .global-nav { flex-basis: 100%; padding-bottom: 1.25rem; }
  .global-nav ul { flex-direction: column; align-items: stretch; gap: 0; border-top: 1px solid var(--c-line); }
  .global-nav li { border-bottom: 1px solid var(--c-line); }
  .global-nav a { min-height: 3.25rem; padding: 0 .25rem; font-size: var(--fs-base); }
  .global-nav a:focus-visible { outline-offset: -2px; } 
  .global-nav .global-nav__cta:focus-visible { outline-color: var(--c-signal-ink); outline-offset: -5px; }
  .global-nav a::after { content: none; }
  .global-nav a[aria-current="page"] { padding-left: .875rem; box-shadow: inset 3px 0 0 var(--c-signal); color: var(--c-signal); font-weight: 600; }
  .global-nav a[aria-current="page"] .global-nav__no { color: inherit; }
  .global-nav__no { display: inline; }
  .global-nav li.global-nav__cta-item { margin-top: 1rem; border-bottom: 0; }
  .global-nav .global-nav__cta { min-height: 3.5rem; margin: 0; padding: 0 1rem; }
  .global-nav .global-nav__cta[aria-current="page"] { padding-left: 1rem; box-shadow: inset 0 -3px 0 var(--c-signal-ink); color: var(--c-signal-ink); }
  .global-nav .global-nav__cta .icon { width: 1.125rem; height: 1.125rem; margin-left: auto; }
  .js .nav-toggle { display: inline-flex; }
  .js .global-nav { display: none; }
  .js .global-nav.is-open { 
    display: block;
    position: absolute;
    top: 100%; left: 0; right: 0;
    padding: 0 var(--gutter) 1.5rem;
    border-bottom: 1px solid var(--c-line-hi);
    background: var(--c-bg);
    box-shadow: 0 1.5rem 3rem var(--c-shadow);
    max-height: calc(100vh - var(--header-h));
    max-height: calc(100svh - var(--header-h));
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  .js .global-nav.is-open ul { border-top: 0; }
}
@media (min-width: 36em) and (max-width: 63.9375em) {
  .header-cta { display: inline-flex; }
  .nav-toggle { margin-left: 0; } 
  .global-nav li.global-nav__cta-item { display: none; }
}
@media (max-height: 30em) {
  .site-header { position: relative; }
}
.site-footer {
  border-top: 2px solid var(--c-blue-deep);
  background: var(--c-bg-sink);
  color: var(--c-text-sub);
  font-size: var(--fs-sm);
}
.site-footer__main {
  display: grid;
  gap: 2.5rem;
  padding-block: clamp(3rem, 6vw, 4.5rem);
}
.site-footer__brand img { width: auto; height: 2.125rem; max-height: 34px; } 
.site-footer__name { margin-top: 1.25rem; color: var(--c-text); font-size: var(--fs-base); font-weight: 600; letter-spacing: .08em; }
.site-footer__rf { margin-top: .25rem; font-family: var(--ff-mono); font-size: var(--fs-xs); letter-spacing: .08em; color: var(--c-text-mute); }
.site-footer address { margin-top: .75rem; line-height: 1.9; }
.footer-nav__title {
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-label);
  color: var(--c-text-mute);
}
.footer-nav ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 1.5rem;
  margin-top: .75rem;
  border-top: 1px solid var(--c-line);
  list-style: none;
}
.footer-nav a {
  display: flex;
  align-items: center;
  gap: .75rem;
  min-height: 3rem;
  border-bottom: 1px solid var(--c-line);
  color: var(--c-text-sub);
  line-height: 1.5; 
  letter-spacing: .08em;
  text-decoration: none;
  transition: color .2s, border-color .2s;
}
.footer-nav a:hover,
.footer-nav a[aria-current="page"] { color: var(--c-text); border-color: var(--c-signal); }
.footer-nav__no { font-family: var(--ff-mono); font-size: var(--fs-xs); letter-spacing: .06em; color: var(--c-text-mute); }
.site-footer__bottom { padding-block: 1.25rem 1.5rem; border-top: 1px solid var(--c-line); }
.site-footer__copy { font-size: var(--fs-xs); letter-spacing: .06em; color: var(--c-text-mute); }
@media (min-width: 30em) {
  .brand__name { letter-spacing: .08em; }
}
@media (min-width: 48em) {
  .site-footer__main { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
}
@media (min-width: 64em) {
  .footer-nav ul { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
  background:
    radial-gradient(64rem 36rem at 86% -8%, var(--c-glow), transparent 64%),
    radial-gradient(44rem 26rem at -8% 108%, var(--c-glow-soft), transparent 70%),
    linear-gradient(180deg, var(--c-bg-raise), var(--c-bg));
}
.hero::before { 
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(circle at 1px 1px, var(--c-dot) 1px, transparent 1.5px);
  background-size: 1.75rem 1.75rem;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, .55) 55%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, .55) 55%, transparent 100%);
}
.hero__inner {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: center;
  padding-block: clamp(2.75rem, 7vw, 4rem) clamp(2.75rem, 6vw, 3.5rem);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .625rem;
  font-family: var(--ff-mono);
  font-size: var(--fs-sm);
  letter-spacing: .08em;
  line-height: 1.4;
  color: var(--c-text-sub);
}
.eyebrow__key {
  flex: none;
  white-space: nowrap;
  padding: .125rem .5rem;
  border: 1px solid var(--c-blue-hi);
  border-radius: var(--radius);
  background: var(--c-scope);
  color: var(--c-blue-hi);
  font-weight: 600;
}
.eyebrow__eq { color: var(--c-text-mute); }
.hero__heading { margin-top: 1.5rem; font-size: 1rem; font-weight: inherit; }
.hero__title,
.hero__ja { display: block; }
.hero__title {
  font-family: var(--ff-mono);
  font-size: clamp(1.375rem, 6.9vw, 3rem); 
  font-weight: 500;
  line-height: 1.24;
  letter-spacing: -.035em;
  color: var(--c-text);
}
.hero__title span { display: block; }
.hero__title .hl { display: inline; color: var(--c-signal); }
.hero__ja {
  margin-top: 1.25rem;
  font-size: clamp(1.0625rem, .9rem + .8vw, 1.4375rem);
  font-weight: 600;
  line-height: 1.7;
  letter-spacing: .14em;
  font-feature-settings: "palt";
}
.hero__lead {
  margin-top: 1.25rem;
  max-width: 34em;
  color: var(--c-text-sub);
  word-break: auto-phrase;
}
.hero .btn-row { margin-top: 2rem; }
.scope {
  --scope-label: 3.375rem;
  --scope-row: 1.75rem;
  --scope-pad: .75rem;
  border: 1px solid var(--c-line-hi);
  border-top: 2px solid var(--c-blue);
  border-radius: var(--radius);
  background: var(--c-scope);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: .04em;
  line-height: 1;
  color: var(--c-text-mute);
}
.scope__bar,
.scope__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1rem;
  padding: .75rem var(--scope-pad);
}
.scope__bar { border-bottom: 1px solid var(--c-line); letter-spacing: .1em; }
.scope__foot { border-top: 1px solid var(--c-line); }
.scope__state { display: inline-flex; align-items: center; gap: .5rem; color: var(--c-text-sub); }
.scope__state b { font-weight: 500; color: var(--c-signal); }
.led {
  width: .5rem; height: .5rem;
  border-radius: 50%;
  background: var(--c-signal);
  box-shadow: 0 0 0 3px var(--c-signal-wash);
}
.scope__body { position: relative; padding: .875rem var(--scope-pad); }
.scope__row {
  display: grid;
  grid-template-columns: var(--scope-label) minmax(0, 1fr);
  align-items: center;
  height: var(--scope-row);
}
.scope__row + .scope__row { margin-top: .375rem; }
.scope__label { color: var(--c-text-sub); }
.scope__track {
  position: relative;
  height: 100%;
  background-image: linear-gradient(to right, var(--c-grid) 1px, transparent 1px);
  background-size: calc(100% / 18) 100%;
}
.trace { display: block; width: 100%; height: 100%; overflow: visible; }
.trace path {
  fill: none;
  stroke: var(--c-text-mute);
  stroke-width: 1.5;
  stroke-linejoin: miter;
  vector-effect: non-scaling-stroke;
}
.trace--step path,
.trace--data path { stroke: var(--c-blue-hi); }
.trace--issue path { stroke: var(--c-text-sub); }
.trace--smile path { stroke: var(--c-signal); stroke-width: 2; }
.trace--smile .trace__fill { stroke: none; fill: var(--c-signal-wash); }
.scope__val {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  color: var(--c-text);
  letter-spacing: 0;
}
.scope__val--a { left: 53.06%; }
.scope__val--b { left: 69.72%; }
.scope__row--smile .scope__label { color: var(--c-signal); }
.scope__overlay {
  position: absolute;
  top: .25rem; bottom: .25rem;
  left: calc(var(--scope-pad) + var(--scope-label));
  right: var(--scope-pad);
  pointer-events: none;
}
.scope__cursor {
  position: absolute;
  top: 0; bottom: 0;
  left: 78.33%;
  border-left: 1px dashed var(--c-signal-dash);
}
.scope__cursor::before { 
  content: "";
  position: absolute;
  top: 0; left: -4.5px;
  border: 4px solid transparent;
  border-top: 6px solid var(--c-signal);
}
.scope__foot span:last-child { color: var(--c-text-sub); }
@media (min-width: 30em) {
  .scope { --scope-label: 3.75rem; --scope-row: 2.25rem; --scope-pad: 1rem; letter-spacing: .06em; }
  .scope__bar { letter-spacing: var(--ls-label); }
}
@media (min-width: 64em) {
  .hero {
    display: grid;
    grid-template-rows: 1fr auto;
    min-height: min(100vh - var(--header-h), 46rem);
    min-height: min(100svh - var(--header-h), 46rem);
  }
  .hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-self: center;
    padding-block: clamp(1.5rem, 5vh, 2.75rem); 
  }
  .hero__title { font-size: clamp(2rem, 4.05vw - .35rem, 3rem); }
}
.rung--detail .rung__body {
  gap: clamp(1.75rem, 4vw, 4rem);
  padding-top: 1.25rem;
  padding-bottom: clamp(3rem, 6vw, 5rem);
}
.rung--detail .rung__title { font-size: clamp(1.125rem, 5.6vw, var(--fs-xl)); grid-column: auto; }
.rung--detail .rung__text { margin-top: 1.25rem; }
.points { max-width: var(--measure); margin-top: 1.75rem; border-top: 1px solid var(--c-line); list-style: none; counter-reset: point; }
.points li {
  counter-increment: point;
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  align-items: baseline;
  padding: .8125rem 0;
  border-bottom: 1px solid var(--c-line);
  font-weight: 500;
  line-height: 1.7;
  word-break: auto-phrase; 
}
.points li::before {
  content: counter(point, decimal-leading-zero);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: .06em;
  color: var(--c-blue-hi);
}
@media (min-width: 64em) {
  .rung--detail .rung__body { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); align-items: center; }
}
.contact__intro { display: grid; gap: clamp(1.5rem, 3vw, 2.25rem); }
.contact__sheet { width: 100%; }
.steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  max-width: 26rem;
  list-style: none;
  font-size: var(--fs-sm);
  line-height: 1.6;
  letter-spacing: .08em;
  color: var(--c-text-sub);
}
.steps__item { position: relative; display: grid; justify-items: start; gap: .5rem; }
.steps__item:not(:last-child)::before { 
  content: "";
  position: absolute;
  top: 1rem;
  left: 2.5rem;
  right: 0;
  border-top: var(--stroke) solid var(--c-line-hi);
}
.steps__no {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2rem;
  border: var(--stroke) solid var(--c-line-hi);
  background: var(--c-panel);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: .06em;
  line-height: 1;
}
.steps__item.is-done { color: var(--c-text); }
.steps__item.is-done::before,
.steps__item.is-done .steps__no { border-color: var(--c-blue-hi); }
.steps__item.is-done .steps__no { color: var(--c-blue-hi); }
.steps__item[aria-current] { color: var(--c-text); font-weight: 600; }
.steps__item[aria-current] .steps__no { border-color: var(--c-signal); color: var(--c-signal); font-weight: 600; }
.form {
  position: relative;
  display: grid;
  gap: 1.75rem;
  padding: clamp(1.5rem, 4vw, 2.25rem) clamp(1rem, 2.5vw, 1.5rem) clamp(1.75rem, 4vw, 2.5rem);
  counter-reset: field;
}
.field { display: grid; gap: .5rem; }
.field__label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .375rem .75rem;
  color: var(--c-text);
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: .06em;
}
.field__label::before { 
  counter-increment: field;
  content: counter(field, decimal-leading-zero);
  content: counter(field, decimal-leading-zero) / "";
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-weight: 400;
  letter-spacing: .06em;
  color: var(--c-blue-hi);
}
.field__req,
.field__opt {
  flex: none;
  white-space: nowrap;
  padding: .0625rem .5rem;
  border-radius: var(--radius);
  font-size: var(--fs-xs);
  line-height: 1.6;
  letter-spacing: .1em;
}
.field__req { background: var(--c-signal); color: var(--c-signal-ink); }
.field__opt {
  padding-block: 0;
  border: 1px solid var(--c-line-hi);
  background: var(--c-blue-wash);
  color: var(--c-text-sub);
  font-weight: 400;
}
.field__control {
  display: block;
  width: 100%;
  min-height: 3.25rem;
  padding: .75rem 1rem;
  border: 1px solid var(--c-line-ui);   
  border-radius: var(--radius);
  background: var(--c-bg-sink);
  color: var(--c-text);
  font-size: 1rem; 
  line-height: 1.6;
  transition: border-color .2s;
}
textarea.field__control { min-height: 13rem; resize: vertical; }
.field__control::placeholder { color: var(--c-text-mute); opacity: 1; }
.field__control:hover,
.field__control:focus { border-color: var(--c-blue-hi); }
.field__control:focus-visible { outline-offset: 2px; }
.field__control[aria-invalid="true"] {
  border-color: var(--c-signal);
  box-shadow: inset 0 0 0 1px var(--c-signal), inset 4px 0 0 var(--c-signal);
}
.field__error {
  position: relative;
  padding-left: 1.25em; 
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.7;
  color: var(--c-signal);
  word-break: auto-phrase;
}
.field__error::before { 
  content: "!";
  content: "!" / "";
  position: absolute;
  left: 0;
  font-family: var(--ff-mono);
}
.field--agree { gap: 0; padding-top: 1.25rem; border-top: 1px solid var(--c-line); }
.check {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  min-height: var(--tap);
  padding-block: .5rem;
  color: var(--c-text);
  font-weight: 600;
  line-height: 1.75;
  letter-spacing: .06em;
  cursor: pointer;
}
.check input {
  -webkit-appearance: none;
  appearance: none;
  display: grid;
  place-content: center;
  flex: none;
  width: 1.5rem; height: 1.5rem;
  margin: .125rem 0 0;
  border: 1px solid var(--c-line-ui);
  border-radius: var(--radius);
  background: var(--c-bg-sink);
  cursor: pointer;
  transition: border-color .2s, background-color .2s;
}
.check input::before { 
  content: "";
  width: .8125rem; height: .4375rem;
  border: solid var(--c-signal-ink);
  border-width: 0 0 2px 2px;
  transform: translateY(-.125rem) rotate(-45deg);
  opacity: 0;
}
.check:hover input { border-color: var(--c-blue-hi); }
.check input:checked { border-color: var(--c-signal); background: var(--c-signal); }
.check input:checked::before { opacity: 1; }
.check input[aria-invalid="true"] { border-color: var(--c-signal); box-shadow: inset 0 0 0 1px var(--c-signal); }
@media (forced-colors: active) { 
  .check input { -webkit-appearance: auto; appearance: auto; }
  .check input::before { content: none; }
}
.check .field__req { display: inline-block; margin-left: .5rem; font-weight: 400; vertical-align: .125em; }
.field--agree .field__error { margin-left: 2.25rem; } 
.form__policy { padding-left: 2.25rem; font-size: var(--fs-sm); line-height: 1.7; }
.form__policy a { display: inline-flex; align-items: center; min-height: var(--tap); }
.field[hidden] { display: none; } 
.field__hint { font-size: var(--fs-sm); line-height: 1.7; color: var(--c-text-sub); word-break: auto-phrase; }
.field__control--short { max-width: 10rem; }
.field__note { 
  position: relative;
  padding: .625rem 1rem .625rem 2.375rem;
  border: 1px solid var(--c-signal);
  border-left-width: 3px;
  border-radius: var(--radius);
  background: var(--c-bg-sink);
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.7;
  color: var(--c-text);
  word-break: auto-phrase;
}
.field__note::before {
  content: "!";
  content: "!" / "";
  position: absolute;
  left: 1rem;
  font-family: var(--ff-mono);
  color: var(--c-signal);
}
.field__note:empty { 
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.robot__box {
  container-type: inline-size; 
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  column-gap: 1.25rem;
  padding: .375rem 1rem;
  border: 1px solid var(--c-line-hi);
  border-radius: var(--radius);
  background: var(--c-bg-sink);
  transition: border-color .2s;
}
.robot__box:hover { border-color: var(--c-blue-hi); }
.robot__box:has(input[aria-invalid="true"]) { 
  border-color: var(--c-signal);
  box-shadow: inset 0 0 0 1px var(--c-signal), inset 4px 0 0 var(--c-signal);
}
.robot__check { flex: 1 1 auto; }
.robot__state {
  display: flex;
  flex: 1 1 100%;
  align-items: flex-start; 
  gap: .625rem;
  min-height: calc(1.7em + .5rem);
  padding: 0 0 .5rem 2.25rem; 
  font-size: var(--fs-sm);
  line-height: 1.7;
  letter-spacing: .06em;
  color: var(--c-text-sub);
  word-break: auto-phrase;
}
.robot__state:not(:empty)::before { content: ""; flex: none; } 
.robot[data-state="working"] .robot__state::before {
  width: 1rem; height: 1rem;
  margin-top: calc((1.7em - 1rem) / 2);
  border: 2px solid var(--c-signal);
  border-right-color: transparent;
  border-radius: 50%;
}
.robot[data-state="done"] .robot__state { color: var(--c-text); font-weight: 600; }
.robot[data-state="done"] .robot__state::before { 
  width: .8125rem; height: .4375rem;
  margin: calc((1.7em - .4375rem) / 2) .125rem 0;
  border: solid var(--c-blue-hi);
  border-width: 0 0 2px 2px;
  transform: translateY(-.125rem) rotate(-45deg);
}
.robot[data-state="failed"] .robot__state { gap: .5rem; color: var(--c-signal); font-weight: 600; }
.robot[data-state="failed"] .robot__state::before { 
  content: "!";
  content: "!" / "";
  width: .75rem;
  font-family: var(--ff-mono);
}
@media (prefers-reduced-motion: no-preference) {
  .robot[data-state="working"] .robot__state::before { animation: form-turn .8s linear infinite; }
}
@media (forced-colors: active) {
  .robot[data-state="working"] .robot__state::before { border-color: CanvasText; border-right-color: transparent; }
  .robot[data-state="done"] .robot__state::before { border-color: CanvasText; }
}
@container (min-width: 30.5rem) {
  .robot__state { flex: 0 0 auto; min-width: 10.5em; min-height: 0; margin-left: auto; padding: 0; }
  .robot[data-state="failed"] .robot__state { flex-basis: 100%; padding: 0 0 .5rem 2.25rem; }
}
.form__extra {
  position: absolute;
  top: -9999px;
  left: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form__actions { display: grid; }
.form__status { font-size: .9375rem; font-weight: 600; line-height: 1.7; word-break: auto-phrase; }
.form__status:not(:empty) {
  position: relative;
  margin-bottom: 1rem;
  padding: .75rem 1rem .75rem 2.375rem;
  border: 1px solid var(--c-signal);
  border-left-width: 3px;
  border-radius: var(--radius);
  background: var(--c-bg-sink);
  color: var(--c-text);
}
.form__status:not(:empty)::before {
  content: "!";
  content: "!" / "";
  position: absolute;
  left: 1rem;
  font-family: var(--ff-mono);
  color: var(--c-signal);
}
.form__status[data-state="busy"] { 
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.form__status[data-state="busy"]::before { content: none; }
.form__submit { justify-content: space-between; }
.form.is-sending .form__submit { opacity: .7; cursor: progress; }
.form.is-sending .form__submit .icon:last-child { display: none; }
.form.is-sending .form__submit::after {
  content: "";
  flex: none;
  width: 1.125rem; height: 1.125rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
}
@media (prefers-reduced-motion: no-preference) {
  .form.is-sending .form__submit::after { animation: form-turn .8s linear infinite; }
  @keyframes form-turn {
    to { transform: rotate(360deg); }
  }
}
.thanks__actions { margin-top: clamp(2.5rem, 5vw, 3.5rem); }
@media (min-width: 30em) {
  .form__submit { justify-self: start; min-width: 17.5rem; }
}
@media (min-width: 48em) {
  textarea.field__control { min-height: 15rem; }
}
@media (min-width: 64em) {
  .contact { padding-top: clamp(2.5rem, 4vw, 4rem); }
  .contact__intro { position: sticky; top: calc(var(--header-h) + 2rem); }
}
@media print {
  .field__req { border: 1px solid; background: none; }
  .check input:checked { background: none; }
}
.stairs {
  order: 3;
  flex: 0 1 4.125rem; 
  min-width: 0;
  height: 1.25rem;
  overflow: visible;
}
.stairs path { fill: none; stroke: var(--c-line); stroke-width: 1.5; }
.stairs .stairs__done { stroke: var(--c-line-hi); }
.stairs .stairs__on { stroke: var(--c-signal); }
.manifesto { font-size: 1rem; font-weight: inherit; }
.manifesto__en,
.manifesto__ja { display: block; }
.manifesto__en {
  font-family: var(--ff-mono);
  font-size: min(10vw, 5.5rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -.035em;
  word-spacing: -.12em;
  white-space: nowrap;
}
.manifesto__w { display: inline-block; }
.manifesto__w::first-letter { color: var(--c-blue-hi); }
.manifesto__q {
  display: inline-block;
  width: .5em;
  font-family: var(--ff-ja);
  font-size: .5em;
  font-weight: 400;
  letter-spacing: 0;
  word-spacing: 0;
  color: var(--c-blue-hi);
}
.manifesto__q:first-child { margin-right: .2em; text-indent: -.5em; vertical-align: .62em; } 
.manifesto__q:last-child { margin-left: .2em; vertical-align: -.08em; }
.manifesto__ja {
  margin-top: clamp(1rem, 2.4vw, 1.75rem);
  font-size: clamp(1.25rem, .9rem + 1.7vw, 2.25rem);
  font-weight: 600;
  line-height: var(--lh-head);
  letter-spacing: var(--ls-head);
  font-feature-settings: "palt";
  text-wrap: balance;
}
.manifesto + .concept-split { margin-top: clamp(2rem, 4.5vw, 3.5rem); }
.h-display + .concept-split { margin-top: clamp(1.5rem, 3.4vw, 2.75rem); }
.concept-hl { color: var(--c-signal); } 
.prose > .concept-closing {
  margin-top: clamp(1.75rem, 3vw, 2.25rem);
  padding-top: clamp(1.5rem, 3vw, 2rem);
  border-top: 1px solid var(--c-line);
  color: var(--c-text);
  font-size: var(--fs-lg);
  font-weight: 600;
  line-height: 1.7;
  letter-spacing: var(--ls-head);
  font-feature-settings: "palt";
}
.stairs-art .s-wash { fill: var(--c-blue-wash); stroke: none; }
.stairs-art .s-next-label { fill: var(--c-signal); }
@media (min-width: 64em) {
  .concept-right {
    grid-column: 2;
    max-width: none; 
    padding-top: 1.75rem;
    border-top: 1px solid var(--c-line);
  }
  .concept-right > p:not([class]) { max-width: var(--measure); }
}
@media (prefers-reduced-motion: no-preference) {
  .stairs-art { animation: sweep 1.5s cubic-bezier(.3, .1, .2, 1) .15s both; }
  .stairs-art .s-next { animation: fade .5s ease-out 1.35s both; }
}
@media (forced-colors: active) {
  .stairs path { stroke: GrayText; }
  .stairs .stairs__done { stroke: CanvasText; }
  .stairs .stairs__on { stroke: Highlight; }
}
.profile__intro .prose p { word-break: auto-phrase; }
.profile__links {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 2rem;
  list-style: none;
}
@media (min-width: 48em) {
  .profile .datasheet__head { padding-block: .875rem; }
  .profile .datasheet th,
  .profile .datasheet td { padding-block: 1.375rem; }
  .profile .datasheet th { width: 10.5em; }
  .profile .datasheet td { font-size: var(--fs-md); }
}
@media (min-width: 64em) {
  .profile { grid-template-rows: auto 1fr; row-gap: 2rem; }
  .profile__sheet { grid-column: 2; grid-row: 1 / span 2; }
  .profile__links { grid-column: 1; grid-row: 2; align-self: end; }
}
@media (min-width: 80em) {
  .profile { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 4rem; }
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  .scope .trace { animation: sweep 1.5s cubic-bezier(.3, .1, .2, 1) .15s both; }
  .scope__val,
  .scope__overlay { animation: fade .5s ease-out 1.35s both; }
  @keyframes sweep {
    from { clip-path: inset(-4px 100% -4px -2px); }
    to { clip-path: inset(-4px -2px -4px -2px); }
  }
  @keyframes fade {
    from { opacity: 0; }
    to { opacity: 1; }
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-delay: 0s !important; }
}
@media print {
  html:root {
    color-scheme: light;
    --c-bg: #fff;
    --c-bg-raise: #fff;
    --c-bg-sink: #fff;
    --c-panel: #fff;
    --c-panel-hi: #eef2f8;
    --c-scope: #fff;
    --c-header: #fff;
    --c-line: #b9c3d3;
    --c-line-hi: #7d8ba1;
    --c-grid: transparent;
    --c-dot: transparent;
    --c-text: #111;
    --c-text-sub: #222;
    --c-text-mute: #4a4a4a;
    --c-blue: #005aaf;
    --c-blue-hi: #004a94;
    --c-glow: transparent;
    --c-glow-soft: transparent;
    --c-blue-wash: transparent;
    --c-signal: #8a5200;
    --c-signal-hi: #8a5200;
    --c-signal-ink: #111; 
    --c-signal-wash: transparent;
    --c-signal-dash: #8a5200;
    --c-shadow: transparent;
  }
  .site-header { position: static; -webkit-backdrop-filter: none; backdrop-filter: none; }
  .skip-link,
  .nav-toggle,
  .global-nav,
  .header-cta,
  .footer-nav,
  .btn .icon,
  .link-arrow .icon { display: none !important; }
  .brand__mark,
  .site-footer__brand img { filter: brightness(0); } 
  body { display: block; min-height: 0; }
  .hero { min-height: 0; }
  .hero__inner { display: block; } 
  .scope { margin-top: 2rem; }
  .btn--primary { background: none; }
  .section { padding-block: 2rem; }
  .rung, .datasheet, .cta, .plate, .scope { break-inside: avoid; }
}
@media (forced-colors: active) {
  .brand__mark,
  .site-footer__brand img { forced-color-adjust: none; background: var(--c-bg-sink); } 
  .scope,
  .plate { forced-color-adjust: none; background-color: var(--c-bg-sink); }
  .nav-toggle__bars::before,
  .nav-toggle__bars::after { background: ButtonText; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars { border-color: ButtonFace; }
  .global-nav .global-nav__cta,
  .header-cta { border: 1px solid; }
  .global-nav .global-nav__cta[aria-current="page"],
  .header-cta[aria-current="page"] { border-bottom-width: 4px; }
  .global-nav a::after { background: CanvasText; }
  .rung__sym { stroke: CanvasText; }
}
@media (forced-colors: active) and (max-width: 63.9375em) {
  .global-nav a[aria-current="page"]:not(.global-nav__cta) { border-left: 3px solid; }
}