@font-face {
  font-family: "YYKK Display";
  src: local("Arial Narrow"), local("Bahnschrift SemiCondensed");
  font-display: swap;
}

:root {
  --sans: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  --display: "YYKK Display", "Arial Narrow", sans-serif;
  --wide: "Bahnschrift", "Arial Narrow", sans-serif;
  --mono: "Space Grotesk", "Cascadia Mono", Consolas, monospace;
  --white: #FFFFFF;
  --paper: #FAFAFA;
  --black: #191919;
  --black-2: #1F1F22;
  --yellow: #FFFA00;
  --yellow-2: #FFF000;
  --gray-1: #D9D9D9;
  --gray-2: #999999;
  --gray-3: #414348;
  --magenta: #FF1AAC;
  --cyan: #00FFA2;
  --red: #BE1414;
  --bg: var(--black);
  --surface: var(--black-2);
  --surface-2: #29292c;
  --fg: var(--white);
  --muted: var(--gray-2);
  --line: rgba(255,255,255,.2);
  --line-strong: rgba(255,255,255,.55);
  --accent-ink: var(--black);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  transition: background-color 240ms ease, color 240ms ease;
}
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.5; }
[hidden] { display: none !important; }

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}

.lab-header {
  position: fixed;
  z-index: 30;
  inset: 0 0 auto 0;
  height: 64px;
  display: grid;
  grid-template-columns: 220px 1fr auto;
  align-items: stretch;
  border-bottom: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--bg) 96%, transparent);
}

.lab-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 22px;
  border-right: 1px solid var(--line);
}
.lab-brand strong { font: 800 20px/.9 var(--display); letter-spacing: -.06em; }
.lab-brand span { color: var(--muted); font: 8px/1 var(--mono); letter-spacing: .18em; }

.variant-id {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 22px;
  min-width: 0;
}
.variant-id > span,
.variant-id > em { color: var(--muted); font: 8px/1 var(--mono); letter-spacing: .17em; font-style: normal; }
.variant-id > b {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: var(--yellow);
  color: var(--black);
  font: 700 13px/1 var(--mono);
}

.tone-control {
  margin-left: auto;
  display: grid;
  grid-template-columns: repeat(2, auto);
  border: 1px solid var(--line-strong);
}
.tone-control button {
  position: relative;
  display: grid;
  grid-template-columns: 7px auto;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 11px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: 8px/1 var(--mono);
  letter-spacing: .1em;
}
.tone-control button:last-child { border-right: 0; }
.tone-control i { width: 6px; height: 6px; border: 1px solid currentColor; }
.tone-control button[aria-pressed="true"] { background: var(--yellow); color: var(--black); }
.tone-control button[aria-pressed="true"] i { background: var(--black); }

.variant-nav { display: grid; grid-auto-flow: column; }
.variant-nav a {
  position: relative;
  display: grid;
  place-items: center;
  width: 58px;
  border-left: 1px solid var(--line);
  color: var(--muted);
  font: 10px/1 var(--mono);
}
.variant-nav a.is-current { color: var(--fg); }
.variant-nav a.is-current::after { content:""; position:absolute; inset:auto 10px 0; height:4px; background:var(--yellow); }

.lab-index {
  position: fixed;
  z-index: 20;
  inset: 64px auto 0 0;
  width: 104px;
  display: grid;
  align-content: center;
  background: color-mix(in srgb, var(--bg) 96%, transparent);
  border-right: 1px solid var(--line);
}
.lab-index a {
  min-height: 70px;
  display: grid;
  place-content: center;
  gap: 6px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font: 7px/1 var(--mono);
  letter-spacing: .14em;
}
.lab-index a:first-child { border-top: 1px solid var(--line); }
.lab-index a:hover { color: var(--fg); background: color-mix(in srgb, var(--yellow) 9%, transparent); }
.lab-index span { color: var(--fg); font-size: 9px; }

.lab-main { margin-left: 104px; padding-top: 64px; overflow: clip; }
.calibration-spectrum {
  position: fixed;
  z-index: 40;
  right: 18px;
  bottom: 18px;
  display: grid;
  grid-template-columns: repeat(3, 22px);
  height: 3px;
  pointer-events: none;
}
.calibration-spectrum i:nth-child(1) { background: var(--yellow); }
.calibration-spectrum i:nth-child(2) { background: var(--magenta); }
.calibration-spectrum i:nth-child(3) { background: var(--cyan); }

.lab-intro {
  position: relative;
  min-height: 430px;
  display: grid;
  grid-template-columns: minmax(340px, 1.1fr) minmax(280px, .9fr) 260px;
  align-items: end;
  gap: 6vw;
  padding: 82px 4vw 50px;
  border-bottom: 1px solid var(--line-strong);
}
.lab-intro > div > p { color: var(--muted); font: 9px/1 var(--mono); letter-spacing: .16em; }
.lab-intro h1 { margin: 12px 0 0; font: 900 clamp(66px, 8vw, 128px)/.78 var(--display); letter-spacing: -.09em; }
.lab-intro > p { margin: 0; max-width: 520px; color: var(--muted); font-size: 13px; line-height: 1.7; }
.lab-intro dl { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; border-top: 1px solid var(--line-strong); }
.lab-intro dl div { padding: 14px 10px; border-right: 1px solid var(--line); }
.lab-intro dt { color: var(--muted); font: 7px/1 var(--mono); }
.lab-intro dd { margin: 9px 0 0; font: 15px/1 var(--mono); }

.lab-section {
  position: relative;
  min-height: 760px;
  padding: 78px 4vw 84px;
  border-bottom: 1px solid var(--line-strong);
  scroll-margin-top: 64px;
}
.section-head {
  display: grid;
  grid-template-columns: 180px minmax(320px, 1fr) minmax(240px, 400px);
  align-items: end;
  gap: 3vw;
  margin-bottom: 36px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-strong);
}
.section-head > span {
  position: relative;
  padding-left: 38px;
  color: var(--muted);
  font: 8px/1 var(--mono);
  letter-spacing: .14em;
}
.section-head > span::before { content:""; position:absolute; left:0; top:2px; width:24px; height:5px; background:var(--gray-2); }
.section-head > span::after { content:"↗"; position:absolute; left:26px; top:-4px; color:var(--yellow); font-size:12px; }
.section-head h2 { margin: 0; font: 800 clamp(30px, 4vw, 54px)/.92 var(--display); letter-spacing: -.055em; }
.section-head p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.65; }

button { border-radius: 0; }
.icon-matrix { display:grid; grid-template-columns:repeat(8,1fr); border:1px solid var(--line-strong); }
.icon-sample {
  position: relative;
  min-height: 132px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 16px;
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
}
.icon-sample:nth-child(8n) { border-right: 0; }
.icon-sample:nth-last-child(-n+8) { border-bottom: 0; }
.icon-sample::before { content:""; position:absolute; top:8px; left:8px; width:7px; height:7px; border-left:1px solid var(--muted); border-top:1px solid var(--muted); }
.icon-sample svg { width: 26px; height: 26px; }
.icon-sample span { font: 8px/1 var(--mono); letter-spacing: .12em; }
.icon-sample small { position:absolute; right:8px; bottom:8px; color:var(--muted); font:6px/1 var(--mono); }
.icon-sample:hover,
.icon-sample:focus-visible { background: var(--yellow); color: var(--black); }

.control-layout { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.control-cluster,
.sample-block { position:relative; min-height:230px; padding:46px 22px 22px; border:1px solid var(--line-strong); background:var(--surface); }
.control-cluster::before,
.sample-block::before { content:"["; position:absolute; left:16px; top:14px; color:var(--muted); font:12px/1 var(--mono); }
.control-cluster::after,
.sample-block::after { content:"]"; position:absolute; right:16px; top:14px; color:var(--muted); font:12px/1 var(--mono); }
.sample-label { margin:0 0 18px; color:var(--muted); text-align:center; font:7px/1 var(--mono); letter-spacing:.16em; }

.ui-button {
  width:100%; min-height:44px; display:grid; grid-template-columns:34px 1fr 24px; align-items:center;
  border:0; border-top:1px solid var(--line-strong); border-bottom:1px solid var(--line-strong);
  background:transparent; cursor:pointer; font:9px/1 var(--mono); letter-spacing:.08em;
}
.ui-button + .ui-button { border-top:0; }
.ui-button small { color:var(--muted); font-size:7px; }
.ui-button span { text-align:left; }
.ui-button svg { width:16px; height:16px; }
.ui-button.is-primary,
.ui-button.is-active,
.ui-button:hover { background:var(--yellow); color:var(--black); }
.ui-button.is-compact { grid-template-columns:1fr; width:calc(50% - 3px); display:inline-grid; }
.ui-button:disabled { opacity:.32; cursor:not-allowed; }

.icon-toolbar { display:grid; grid-template-columns:repeat(4,1fr); border:1px solid var(--line-strong); }
.icon-toolbar button { position:relative; min-height:76px; border:0; border-right:1px solid var(--line); background:transparent; cursor:pointer; }
.icon-toolbar button:last-child { border-right:0; }
.icon-toolbar button.is-active { background:var(--yellow); color:var(--black); }
.icon-toolbar small { position:absolute; right:5px; bottom:5px; font:6px/1 var(--mono); }

.input-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:26px 36px; }
.field { position:relative; display:grid; gap:8px; padding-left:14px; border-left:4px solid var(--gray-2); }
.field > span { display:flex; justify-content:space-between; font:7px/1 var(--mono); letter-spacing:.1em; }
.field em { color:var(--muted); font-style:normal; }
.field input,
.data-tools input {
  width:100%; min-height:48px; padding:0 14px; border:0; border-top:1px solid var(--line-strong); border-bottom:1px solid var(--line-strong);
  background:transparent; color:var(--fg); outline:0; font-size:16px;
}
.field small { color:var(--muted); font-size:9px; }
.field.is-focus { border-color:var(--yellow); }
.field.is-valid { border-color:var(--cyan); }
.field.is-error { border-color:var(--red); }
.field.is-error em,
.field.is-error small { color:var(--red); }
.field.is-disabled { opacity:.34; grid-column:1 / -1; max-width:50%; }

.nav-grid,
.feedback-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:28px; }
.ui-tabs,
.segment-control { display:grid; grid-template-columns:repeat(3,1fr); border-bottom:1px solid var(--line-strong); }
.ui-tabs button,
.segment-control button { min-height:48px; border:0; border-right:1px solid var(--line); background:transparent; cursor:pointer; font:9px/1 var(--mono); }
.ui-tabs button:last-child,
.segment-control button:last-child { border-right:0; }
.ui-tabs button.is-active,
.segment-control button.is-active { background:var(--yellow); color:var(--black); }
.breadcrumb { min-height:48px; display:flex; align-items:center; gap:20px; border-bottom:1px solid var(--line-strong); font:8px/1 var(--mono); }
.breadcrumb a { color:var(--muted); }
.breadcrumb b { color:var(--fg); }
.square-switch { width:100%; min-height:56px; display:grid; grid-template-columns:56px 1fr auto; align-items:center; gap:14px; border:1px solid var(--line-strong); background:transparent; cursor:pointer; text-align:left; }
.square-switch > i { position:relative; width:44px; height:18px; margin-left:6px; border:1px solid var(--line-strong); }
.square-switch > i::after { content:""; position:absolute; top:2px; left:2px; width:12px; height:12px; background:var(--gray-2); transition:transform 240ms ease; }
.square-switch[aria-checked="true"] > i::after { transform:translateX(26px); background:var(--yellow); }
.square-switch span { font:9px/1 var(--mono); }
.square-switch small { margin-right:12px; color:var(--muted); font:7px/1 var(--mono); }

.data-tools { display:grid; grid-template-columns:minmax(300px,460px) auto; align-items:end; gap:30px; margin-bottom:22px; }
.data-tools label { display:grid; gap:8px; color:var(--muted); font:7px/1 var(--mono); }
.data-tools > span { color:var(--muted); font:8px/1 var(--mono); }
.data-grid { display:grid; grid-template-columns:35% 65%; border:1px solid var(--line-strong); }
.tree-panel { border-right:1px solid var(--line-strong); }
.tree-item { width:100%; min-height:52px; display:grid; grid-template-columns:28px 1fr auto; align-items:center; gap:10px; padding:0 16px 0 calc(16px + var(--level) * 26px); border:0; border-bottom:1px solid var(--line); background:transparent; text-align:left; cursor:pointer; }
.tree-item svg { width:16px; height:16px; }
.tree-item b { font-size:12px; font-weight:500; }
.tree-item small { color:var(--muted); font:7px/1 var(--mono); }
.tree-item.is-selected { background:var(--yellow); color:var(--black); }
.catalog-row { min-height:52px; display:grid; grid-template-columns:44px 24px 1fr 130px 48px; align-items:center; gap:10px; padding:0 14px; border-bottom:1px solid var(--line); }
.catalog-row:last-child { border-bottom:0; }
.catalog-row:hover { background:color-mix(in srgb,var(--yellow) 16%,transparent); }
.catalog-row > span,
.catalog-row small,
.catalog-row em { color:var(--muted); font:7px/1 var(--mono); font-style:normal; }
.catalog-row svg { width:15px; height:15px; }
.catalog-row b { font-size:12px; font-weight:500; }

.status-list { display:flex; flex-wrap:wrap; gap:12px; }
.status-mark { display:inline-flex; align-items:center; gap:8px; min-height:34px; padding:0 10px; border-top:1px solid var(--line); border-bottom:1px solid var(--line); font:8px/1 var(--mono); }
.status-mark i { width:8px; height:8px; background:var(--gray-2); }
.status-mark.is-ready i { background:var(--cyan); }
.status-mark.is-sync i { background:var(--yellow); }
.status-mark.is-locked i { background:var(--red); }
.step-progress { display:grid; grid-template-columns:repeat(10,1fr); gap:3px; margin:30px 0 18px; }
.step-progress i { height:22px; border:1px solid var(--line); }
.step-progress i.is-filled { background:var(--yellow); border-color:var(--yellow); }
.micro-action { min-height:34px; padding:0 14px; border:1px solid var(--line-strong); background:transparent; color:inherit; cursor:pointer; font:8px/1 var(--mono); }
.micro-action:hover { background:var(--yellow); color:var(--black); }
.tooltip-target { position:relative; min-height:60px; display:flex; align-items:center; gap:16px; padding:0 18px; border:1px solid var(--line-strong); background:transparent; cursor:pointer; }
.tooltip-target::after { content:attr(data-tooltip); position:absolute; left:0; bottom:calc(100% + 8px); padding:8px 10px; background:var(--yellow); color:var(--black); opacity:0; pointer-events:none; font:7px/1 var(--mono); transform:translateY(5px); transition:opacity 220ms ease,transform 220ms ease; }
.tooltip-target:hover::after,
.tooltip-target:focus-visible::after { opacity:1; transform:none; }
.paper-surface { background:var(--white); color:var(--black); }
.paper-surface p { color:var(--gray-3); font-size:10px; line-height:1.65; }
.paper-surface strong { display:block; margin:18px 0 10px; font:700 18px/1.1 var(--display); }
.paper-surface .micro-action { color:var(--black); border-color:var(--gray-3); }

.toast { position:fixed; z-index:60; right:22px; bottom:28px; min-width:290px; display:grid; grid-template-columns:100px 1fr 40px; align-items:center; min-height:58px; background:var(--yellow); color:var(--black); border:2px solid var(--black); }
.toast span { padding-left:14px; font:7px/1 var(--mono); }
.toast b { font:10px/1 var(--mono); }
.toast button { height:100%; border:0; border-left:1px solid var(--black); background:transparent; cursor:pointer; }

@media (max-width: 1100px) {
  .lab-header { grid-template-columns:180px 1fr auto; }
  .variant-id > em { display:none; }
  .lab-intro { grid-template-columns:1fr 1fr; }
  .lab-intro dl { grid-column:1 / -1; }
  .section-head { grid-template-columns:130px 1fr; }
  .section-head p { grid-column:2; }
  .icon-matrix { grid-template-columns:repeat(4,1fr); }
  .icon-sample:nth-child(4n) { border-right:0; }
  .icon-sample:nth-last-child(-n+8) { border-bottom:1px solid var(--line); }
  .icon-sample:nth-last-child(-n+4) { border-bottom:0; }
  .control-layout { grid-template-columns:1fr 1fr; }
  .control-cluster:last-child { grid-column:1 / -1; }
  .catalog-row { grid-template-columns:38px 22px 1fr 90px; }
  .catalog-row em { display:none; }
}

@media (max-width: 760px) {
  .lab-header { height:58px; grid-template-columns:1fr auto; }
  .lab-brand { border-right:0; padding:0 14px; }
  .lab-brand span,
  .variant-id > span,
  .variant-id > b,
  .variant-id > em { display:none; }
  .variant-id { position:absolute; right:178px; top:12px; padding:0; }
  .tone-control button { width:34px; grid-template-columns:1fr; padding:0; place-items:center; }
  .tone-control button span { display:none; }
  .variant-nav a { width:42px; }
  .lab-index { display:none; }
  .lab-main { margin-left:0; padding-top:58px; }
  .lab-intro { min-height:520px; grid-template-columns:1fr; padding:70px 18px 34px; }
  .lab-intro h1 { font-size:68px; }
  .lab-section { min-height:0; padding:64px 18px; }
  .section-head { grid-template-columns:1fr; gap:16px; }
  .section-head p { grid-column:auto; }
  .icon-matrix { grid-template-columns:repeat(2,1fr); }
  .icon-sample:nth-child(2n) { border-right:0; }
  .icon-sample:nth-last-child(-n+4) { border-bottom:1px solid var(--line); }
  .icon-sample:nth-last-child(-n+2) { border-bottom:0; }
  .control-layout,
  .input-grid,
  .nav-grid,
  .feedback-grid,
  .data-grid { grid-template-columns:1fr; }
  .control-cluster:last-child,
  .field.is-disabled { grid-column:auto; max-width:none; }
  .tree-panel { border-right:0; border-bottom:1px solid var(--line-strong); }
  .catalog-row { grid-template-columns:32px 20px 1fr; }
  .catalog-row small { display:none; }
  .toast { left:12px; right:12px; bottom:12px; min-width:0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior:auto; }
  *, *::before, *::after { animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
}